9cdd694a797623b3d0f76ee69304dd85 linux-loop-hvr-2.4.16.0.patch

[packages/kernel.git] / linux-2.2.18-freeswan-1.8.patch

diff -druN linux-noipsec/Documentation/Configure.help linux/Documentation/Configure.help
--- linux-noipsec/Documentation/Configure.help  Fri Dec 15 15:17:02 2000
+++ linux/Documentation/Configure.help  Fri Dec 15 15:18:21 2000
@@ -3715,6 +3715,59 @@
   This is a backward compatibility option, choose Y for now.
   This option will be removed soon.
 
+IP Security Protocol (IPSEC) (EXPERIMENTAL)
+CONFIG_IPSEC
+  This unit is experimental code.
+  Pick 'y' for static linking, 'm' for module support or 'n' for none.
+  This option adds support for network layer packet encryption and/or
+  authentication with participating hosts.  The standards start with:
+  RFCs 2411, 2407 and 2401.  Others are mentioned where they refer to
+  specific features below.  There are more pending which can be found
+  at:  ftp://ftp.ietf.org/internet-drafts/draft-ietf-ipsec-*.
+  A description of each document can also be found at: 
+  http://ietf.org/ids.by.wg/ipsec.html.
+  Their charter can be found at: 
+  http://www.ietf.org/html.charters/ipsec-charter.html
+  Snapshots and releases of the current work can be found at: 
+  http://www.freeswan.org/
+
+IPSEC: IP-in-IP encapsulation
+CONFIG_IPSEC_IPIP
+  This option provides support for tunnel mode IPSEC.  It is recommended
+  to enable this.
+
+IPSEC: Authentication Header
+CONFIG_IPSEC_AH
+  This option provides support for the IPSEC Authentication Header
+  (IP protocol 51) which provides packet layer sender and content
+  authentication.  It is recommended to enable this.  RFC2402
+
+HMAC-MD5 algorithm
+CONFIG_IPSEC_AUTH_HMAC_MD5
+  Provides support for authentication using the HMAC MD5
+  algorithm with 96 bits of hash used as the authenticator.  RFC2403
+
+HMAC-SHA1 algorithm
+CONFIG_IPSEC_AUTH_HMAC_SHA1
+  Provides support for Authentication Header using the HMAC SHA1
+  algorithm with 96 bits of hash used as the authenticator.  RFC2404
+
+IPSEC: Encapsulating Security Payload
+CONFIG_IPSEC_ESP
+  This option provides support for the IPSEC Encapsulation Security
+  Payload (IP protocol 50) which provides packet layer content
+  hiding.  It is recommended to enable this.  RFC2406
+
+3DES algorithm
+CONFIG_IPSEC_ENC_3DES
+  Provides support for Encapsulation Security Payload protocol, using
+  the triple DES encryption algorithm.  RFC2451
+
+IPSEC Debugging Option
+CONFIG_IPSEC_DEBUG
+  Enables IPSEC kernel debugging.  It is further controlled by the
+  user space utility 'klipsdebug'.
+
 SCSI support?
 CONFIG_SCSI
   If you want to use a SCSI hard disk, SCSI tape drive, SCSI CDROM or
diff -druN linux-noipsec/arch/i386/defconfig linux/arch/i386/defconfig
--- linux-noipsec/arch/i386/defconfig   Fri Dec 15 15:16:54 2000
+++ linux/arch/i386/defconfig   Fri Dec 15 15:18:22 2000
@@ -392,3 +392,96 @@
 # Kernel hacking
 #
 # CONFIG_MAGIC_SYSRQ is not set
+#
+# RCSID $Id$
+#
+
+#
+# FreeS/WAN IPSec implementation, KLIPS kernel config defaults
+#
+
+#
+# First, lets override stuff already set or not in the kernel config.
+#
+# We can't even think about leaving this off...
+CONFIG_INET=y
+
+#
+# This must be on for subnet protection.
+CONFIG_IP_FORWARD=y
+
+# Shut off IPSEC masquerading if it has been enabled, since it will 
+# break the compile.  IPPROTO_ESP and IPPROTO_AH were included in 
+# net/ipv4/ip_masq.c when they should have gone into include/linux/in.h.
+CONFIG_IP_MASQUERADE_IPSEC=n
+
+#
+# Next, lets set the recommended FreeS/WAN configuration.
+#
+
+# To config as static (preferred), 'y'.  To config as module, 'm'.
+CONFIG_IPSEC=y
+
+# To do tunnel mode IPSec, this must be enabled.
+CONFIG_IPSEC_IPIP=y
+
+# To enable authentication, say 'y'.   (Highly recommended)
+CONFIG_IPSEC_AH=y
+
+# Authentication algorithm(s):
+CONFIG_IPSEC_AUTH_HMAC_MD5=y
+CONFIG_IPSEC_AUTH_HMAC_SHA1=y
+
+# To enable encryption, say 'y'.   (Highly recommended)
+CONFIG_IPSEC_ESP=y
+
+# Encryption algorithm(s):
+CONFIG_IPSEC_ENC_3DES=y
+
+# IP Compression: new, probably still has minor bugs.
+CONFIG_IPSEC_IPCOMP=y
+
+# To enable userspace-switchable KLIPS debugging, say 'y'.
+CONFIG_IPSEC_DEBUG=y
+
+#
+#
+# $Log$
+# Revision 1.18  2000/11/30 17:26:56  rgb
+# Cleaned out unused options and enabled ipcomp by default.
+#
+# Revision 1.17  2000/09/15 11:37:01  rgb
+# Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+# IPCOMP zlib deflate code.
+#
+# Revision 1.16  2000/09/08 19:12:55  rgb
+# Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+#
+# Revision 1.15  2000/05/24 19:37:13  rgb
+# *** empty log message ***
+#
+# Revision 1.14  2000/05/11 21:14:57  henry
+# just commenting the FOOBAR=y lines out is not enough
+#
+# Revision 1.13  2000/05/10 20:17:58  rgb
+# Comment out netlink defaults, which are no longer needed.
+#
+# Revision 1.12  2000/05/10 19:13:38  rgb
+# Added configure option to shut off no eroute passthrough.
+#
+# Revision 1.11  2000/03/16 07:09:46  rgb
+# Hardcode PF_KEYv2 support.
+# Disable IPSEC_ICMP by default.
+# Remove DES config option from defaults file.
+#
+# Revision 1.10  2000/01/11 03:09:42  rgb
+# Added a default of 'y' to PF_KEYv2 keying I/F.
+#
+# Revision 1.9  1999/05/08 21:23:12  rgb
+# Added support for 2.2.x kernels.
+#
+# Revision 1.8  1999/04/06 04:54:25  rgb
+# Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+# patch shell fixes.
+#
+#
--- linux-noipsec/net/Config.in Fri Dec 15 15:15:48 2000
+++ linux/net/Config.in Fri Dec 15 15:18:21 2000
@@ -67,4 +67,8 @@
   endmenu
   fi
 fi
+tristate 'IP Security Protocol (FreeS/WAN IPSEC)' CONFIG_IPSEC
+if [ "$CONFIG_IPSEC" != "n" ]; then
+  source net/ipsec/Config.in
+fi
 endmenu
diff -druN linux-noipsec/net/Makefile linux/net/Makefile
--- linux-noipsec/net/Makefile  Fri Dec 15 15:15:46 2000
+++ linux/net/Makefile  Fri Dec 15 15:18:21 2000
@@ -161,6 +161,16 @@
   endif
 endif
 
+ifeq ($(CONFIG_IPSEC),y)
+ALL_SUB_DIRS += ipsec
+SUB_DIRS += ipsec
+else
+  ifeq ($(CONFIG_IPSEC),m)
+  ALL_SUB_DIRS += ipsec
+  MOD_SUB_DIRS += ipsec
+  endif
+endif
+
 # We must attach netsyms.o to socket.o, as otherwise there is nothing
 # to pull the object file from the archive.
 
diff -druN linux-noipsec/net/ipsec/Config.in linux/net/ipsec/Config.in
--- linux-noipsec/net/ipsec/Config.in   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/Config.in   Fri Sep 15 13:37:00 2000
@@ -0,0 +1,34 @@
+#
+# IPSEC configuration
+# Copyright (C) 1998, 1999  Richard Guy Briggs.
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id$
+
+comment 'IPSec options (FreeS/WAN)'
+
+bool '   IPSEC: IP-in-IP encapsulation (tunnel mode)' CONFIG_IPSEC_IPIP
+
+bool '   IPSEC: Authentication Header' CONFIG_IPSEC_AH
+if [ "$CONFIG_IPSEC_AH" = "y" -o "$CONFIG_IPSEC_ESP" = "y" ]; then
+  bool '      HMAC-MD5 authentication algorithm' CONFIG_IPSEC_AUTH_HMAC_MD5
+  bool '      HMAC-SHA1 authentication algorithm' CONFIG_IPSEC_AUTH_HMAC_SHA1
+fi
+
+bool '   IPSEC: Encapsulating Security Payload' CONFIG_IPSEC_ESP
+if [ "$CONFIG_IPSEC_ESP" = "y" ]; then
+  bool '      3DES encryption algorithm' CONFIG_IPSEC_ENC_3DES
+fi
+
+bool '   IPSEC: IP Compression' CONFIG_IPSEC_IPCOMP
+
+bool '   IPSEC Debugging Option' CONFIG_IPSEC_DEBUG
diff -druN linux-noipsec/net/ipsec/Makefile linux/net/ipsec/Makefile
--- linux-noipsec/net/ipsec/Makefile    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/Makefile    Fri Sep 29 21:51:57 2000
@@ -0,0 +1,242 @@
+# Makefile for KLIPS kernel code
+# Copyright (C) 1998, 1999  Richard Guy Briggs.
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id$
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definition is now in the main makefile...
+
+ifndef TOPDIR
+TOPDIR  := /usr/src/linux
+endif
+
+SUB_DIRS := 
+ALL_SUB_DIRS := libfreeswan zlib
+MOD_SUB_DIRS := 
+
+O_TARGET := ipsec.o
+O_OBJS := ipsec_init.o ipsec_xform.o ipsec_netlink.o ipsec_radij.o ipsec_tunnel.o ipsec_rcv.o sysctl_net_ipsec.o pfkey_v2.o pfkey_v2_parser.o
+
+OX_OBJS := radij.o
+M_OBJS := $(O_TARGET)
+
+override CFLAGS += -Ilibfreeswan
+
+ifeq ($(CONFIG_IPSEC_DEBUG),y)
+override CFLAGS += -g
+endif
+
+override CFLAGS += -Wall 
+#override CFLAGS += -Wconversion 
+#override CFLAGS += -Wmissing-prototypes 
+override CFLAGS += -Wpointer-arith 
+#override CFLAGS += -Wcast-qual 
+#override CFLAGS += -Wmissing-declarations 
+override CFLAGS += -Wstrict-prototypes
+#override CFLAGS += -pedantic
+#override CFLAGS += -O3
+#override CFLAGS += -W
+#override CFLAGS += -Wwrite-strings 
+override CFLAGS += -Wbad-function-cast 
+
+
+ifeq ($(CONFIG_IPSEC_ENC_DES),y)
+INCLUDE_DES = y
+endif
+
+ifeq ($(CONFIG_IPSEC_ENC_3DES),y)
+INCLUDE_DES = y
+endif
+
+ifeq ($(CONFIG_IPSEC_AUTH_HMAC_MD5),y)
+O_OBJS += ipsec_md5c.o
+endif
+
+ifeq ($(CONFIG_IPSEC_AUTH_HMAC_SHA1),y)
+O_OBJS += ipsec_sha1.o
+endif
+
+ifeq ($(CONFIG_IPSEC_IPCOMP),y)
+  O_OBJS += ipcomp.o zlib/zlib.a
+  SUB_DIRS += zlib
+  MOD_SUB_DIRS += zlib
+endif
+
+ifeq ($(INCLUDE_DES),y)
+O_OBJS += libdes/libdes.a
+endif
+
+O_OBJS += libfreeswan/libkernel.a
+
+ifeq ($(CONFIG_IPSEC),y)
+SUB_DIRS += libfreeswan
+else
+  ifeq ($(CONFIG_IPSEC),m)
+  override MOD_SUB_DIRS += libfreeswan
+  endif
+endif
+
+include $(TOPDIR)/Rules.make
+
+$(O_OBJS) $(OX_OBJS):  $(TOPDIR)/include/linux/config.h $(TOPDIR)/include/linux/autoconf.h
+
+libdes/libdes.a:
+       ( cd libdes && \
+       if test " `arch | sed 's/^i[3456]/x/'`" = " x86" ; \
+       then $(MAKE) CC='$(CC)' CFLAG='$(CFLAGS)' TESTING='' x86-elf ; \
+       else $(MAKE) CC='$(CC)' CFLAG='$(CFLAGS)' libdes.a ; \
+       fi )
+
+libfreeswan/libkernel.a:
+       $(MAKE) -C libfreeswan
+
+zlib/zlib.a:
+       $(MAKE) -C zlib
+
+clean:
+       -rm -f *.o
+
+tags TAGS: *.c *.h libfreeswan/*.c libfreeswan/*.h
+       find . -name '*.[ch]' |xargs etags
+       find . -name '*.[ch]' |xargs ctags
+
+tar:
+               tar -cvf /dev/f1 .
+
+#
+# $Log$
+# Revision 1.30  2000/09/29 19:51:57  rgb
+# Moved klips/net/ipsec/ipcomp_* to zlib/* (Svenning).
+#
+# Revision 1.29  2000/09/15 11:37:01  rgb
+# Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+# IPCOMP zlib deflate code.
+#
+# Revision 1.28  2000/09/15 04:55:25  rgb
+# Clean up pfkey object inclusion into the default object.
+#
+# Revision 1.27  2000/09/12 03:20:47  rgb
+# Cleared out now unused pfkeyv2 switch.
+# Enabled sysctl.
+#
+# Revision 1.26  2000/09/08 19:12:55  rgb
+# Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+#
+# Revision 1.25  2000/06/16 03:09:16  rgb
+# Shut up cast lost warning due to changes in 2.4.0-test1.
+#
+# Revision 1.24  2000/03/16 06:40:48  rgb
+# Hardcode PF_KEYv2 support.
+#
+# Revision 1.23  2000/02/14 21:10:38  rgb
+# Added gcc debug flag when KLIPS_DEBUG is swtiched on.
+#
+# Revision 1.22  2000/01/21 09:44:29  rgb
+# Added compiler switches to be a lot more fussy.
+#
+# Revision 1.21  1999/11/25 23:35:20  rgb
+# Removed quotes to fix Alpha compile issues.
+#
+# Revision 1.20  1999/11/17 15:49:34  rgb
+# Changed all occurrences of ../../../lib in pathnames to libfreeswan,
+# which refers to the /usr/src/linux/net/ipsec/lib directory setup by the
+# klink target in the top-level Makefile; and libdeslite.o to
+# libdes/libdes.a.
+# Added SUB_DIRS := lib definition for the kernel libraries.
+#
+# Revision 1.19  1999/04/27 19:06:47  rgb
+# dd libs and dependancies to tags generation.
+#
+# Revision 1.18  1999/04/16 16:28:12  rgb
+# Minor bugfix to avoid including DES if only AH is used.
+#
+# Revision 1.17  1999/04/15 15:37:23  rgb
+# Forward check changes from POST1_00 branch.
+#
+# Revision 1.14.2.1  1999/03/30 17:29:17  rgb
+# Add support for pfkey.
+#
+# Revision 1.16  1999/04/11 00:28:56  henry
+# GPL boilerplate
+#
+# Revision 1.15  1999/04/06 04:54:25  rgb
+# Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+# patch shell fixes.
+#
+# Revision 1.14  1999/02/18 16:50:45  henry
+# update for new DES library
+#
+# Revision 1.13  1999/02/12 21:11:45  rgb
+# Prepare for newer LIBDES (patch from P.Onion).
+#
+# Revision 1.12  1999/01/26 02:05:08  rgb
+# Remove references to INET_GET_PROTOCOL.
+# Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+# Change from transform switch to algorithm switch.
+#
+# Revision 1.11  1999/01/22 06:16:09  rgb
+# Added algorithm switch code config option.
+#
+# Revision 1.10  1998/11/08 05:31:21  henry
+# be a little fussier
+#
+# Revision 1.9  1998/11/08 05:29:41  henry
+# revisions for new libdes handling
+#
+# Revision 1.8  1998/08/12 00:05:48  rgb
+# Added new xforms to Makefile (moved des-cbc to des-old).
+#
+# Revision 1.7  1998/07/27 21:48:47  rgb
+# Add libkernel.
+#
+# Revision 1.6  1998/07/14 15:50:47  rgb
+# Add dependancies on linux config files.
+#
+# Revision 1.5  1998/07/09 17:44:06  rgb
+# Added 'clean' and 'tags' targets.
+# Added TOPDIR macro.
+# Change module back from symbol exporting to not.
+#
+# Revision 1.3  1998/06/25 19:25:04  rgb
+# Rearrange to support static linking and objects with exported symbol
+# tables.
+#
+# Revision 1.1  1998/06/18 21:27:42  henry
+# move sources from klips/src to klips/net/ipsec, to keep stupid
+# kernel-build scripts happier in the presence of symlinks
+#
+# Revision 1.3  1998/04/15 23:18:43  rgb
+# Unfixed the ../../libdes fix to avoid messing up Henry's script.
+#
+# Revision 1.2  1998/04/14 17:50:47  rgb
+# Fixed to find the new location of libdes.
+#
+# Revision 1.1  1998/04/09 03:05:22  henry
+# sources moved up from linux/net/ipsec
+# modifications to centralize libdes code
+#
+# Revision 1.1.1.1  1998/04/08 05:35:02  henry
+# RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+#
+# Revision 0.5  1997/06/03 04:24:48  ji
+# Added ESP-3DES-MD5-96
+#
+# Revision 0.4  1997/01/15 01:32:59  ji
+# Added new transforms.
+#
+# Revision 0.3  1996/11/20 14:22:53  ji
+# *** empty log message ***
+#
diff -druN linux-noipsec/net/ipsec/defconfig linux/net/ipsec/defconfig
--- linux-noipsec/net/ipsec/defconfig   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/defconfig   Thu Nov 30 18:26:56 2000
@@ -0,0 +1,93 @@
+#
+# RCSID $Id$
+#
+
+#
+# FreeS/WAN IPSec implementation, KLIPS kernel config defaults
+#
+
+#
+# First, lets override stuff already set or not in the kernel config.
+#
+# We can't even think about leaving this off...
+CONFIG_INET=y
+
+#
+# This must be on for subnet protection.
+CONFIG_IP_FORWARD=y
+
+# Shut off IPSEC masquerading if it has been enabled, since it will 
+# break the compile.  IPPROTO_ESP and IPPROTO_AH were included in 
+# net/ipv4/ip_masq.c when they should have gone into include/linux/in.h.
+CONFIG_IP_MASQUERADE_IPSEC=n
+
+#
+# Next, lets set the recommended FreeS/WAN configuration.
+#
+
+# To config as static (preferred), 'y'.  To config as module, 'm'.
+CONFIG_IPSEC=y
+
+# To do tunnel mode IPSec, this must be enabled.
+CONFIG_IPSEC_IPIP=y
+
+# To enable authentication, say 'y'.   (Highly recommended)
+CONFIG_IPSEC_AH=y
+
+# Authentication algorithm(s):
+CONFIG_IPSEC_AUTH_HMAC_MD5=y
+CONFIG_IPSEC_AUTH_HMAC_SHA1=y
+
+# To enable encryption, say 'y'.   (Highly recommended)
+CONFIG_IPSEC_ESP=y
+
+# Encryption algorithm(s):
+CONFIG_IPSEC_ENC_3DES=y
+
+# IP Compression: new, probably still has minor bugs.
+CONFIG_IPSEC_IPCOMP=y
+
+# To enable userspace-switchable KLIPS debugging, say 'y'.
+CONFIG_IPSEC_DEBUG=y
+
+#
+#
+# $Log$
+# Revision 1.18  2000/11/30 17:26:56  rgb
+# Cleaned out unused options and enabled ipcomp by default.
+#
+# Revision 1.17  2000/09/15 11:37:01  rgb
+# Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+# IPCOMP zlib deflate code.
+#
+# Revision 1.16  2000/09/08 19:12:55  rgb
+# Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+#
+# Revision 1.15  2000/05/24 19:37:13  rgb
+# *** empty log message ***
+#
+# Revision 1.14  2000/05/11 21:14:57  henry
+# just commenting the FOOBAR=y lines out is not enough
+#
+# Revision 1.13  2000/05/10 20:17:58  rgb
+# Comment out netlink defaults, which are no longer needed.
+#
+# Revision 1.12  2000/05/10 19:13:38  rgb
+# Added configure option to shut off no eroute passthrough.
+#
+# Revision 1.11  2000/03/16 07:09:46  rgb
+# Hardcode PF_KEYv2 support.
+# Disable IPSEC_ICMP by default.
+# Remove DES config option from defaults file.
+#
+# Revision 1.10  2000/01/11 03:09:42  rgb
+# Added a default of 'y' to PF_KEYv2 keying I/F.
+#
+# Revision 1.9  1999/05/08 21:23:12  rgb
+# Added support for 2.2.x kernels.
+#
+# Revision 1.8  1999/04/06 04:54:25  rgb
+# Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+# patch shell fixes.
+#
+#
diff -druN linux-noipsec/net/ipsec/ipcomp.c linux/net/ipsec/ipcomp.c
--- linux-noipsec/net/ipsec/ipcomp.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipcomp.c    Sat Nov 25 04:48:49 2000
@@ -0,0 +1,725 @@
+/*
+ * IPCOMP zlib interface code.
+ * Copyright (C) 2000  Svenning Soerensen <svenning@post5.tele.dk>
+ * Copyright (C) 2000  Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipcomp_c_version[] = "RCSID $Id$";
+
+/* SSS */
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h>
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+
+#include <freeswan.h>
+#ifdef NET_21
+#include <net/dst.h>
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#define proto_priv cb
+#endif /* NET21 */
+#include <asm/checksum.h>
+#include <net/ip.h>
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+#include "ipsec_tunnel.h"
+#include "ipsec_rcv.h" /* sysctl_ipsec_inbound_policy_check */
+#include "ipcomp.h"
+#include "zlib/zlib.h"
+#include "zlib/zutil.h"
+
+#include <pfkeyv2.h> /* SADB_X_CALG_DEFLATE */
+
+#ifdef CONFIG_IPSEC_DEBUG
+int sysctl_ipsec_debug_ipcomp = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+static
+struct sk_buff *skb_copy_ipcomp(struct sk_buff *skb, int data_growth, int gfp_mask);
+
+static
+voidpf my_zcalloc(voidpf opaque, uInt items, uInt size)
+{
+       return (voidpf) kmalloc(items*size, GFP_ATOMIC);
+}
+
+static
+void my_zfree(voidpf opaque, voidpf address)
+{
+       kfree(address);
+}
+
+struct sk_buff *skb_compress(struct sk_buff *skb, struct tdb *tdb, unsigned int *flags)
+{
+       struct iphdr *iph;
+       unsigned int iphlen, pyldsz, cpyldsz;
+       unsigned char *buffer;
+       z_stream zs;
+       int zresult;
+       
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_compress: .\n");
+
+       if(!skb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "passed in NULL skb, returning ERROR.\n");
+               if (flags) *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+
+       if(!tdb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "passed in NULL tdb needed for cpi, returning ERROR.\n");
+               if (flags) *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+
+       if (!flags) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "passed in NULL flags, returning ERROR.\n");
+#ifdef NET_21
+               kfree_skb(skb);
+#else /* NET_21 */
+               dev_kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+               return NULL;
+       }
+       
+#ifdef NET_21
+       iph = skb->nh.iph;
+#else /* NET_21 */
+       iph = skb->ip_hdr;
+#endif /* NET_21 */
+
+       switch (iph->protocol) {
+       case IPPROTO_COMP:
+       case IPPROTO_AH:
+       case IPPROTO_ESP:
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression of packet with ip protocol %d.\n",
+                           iph->protocol);
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+       
+       /* Don't compress packets already fragmented */
+       if (ntohs(iph->frag_off) & ~0x4000) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression of fragmented packet.\n");
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+       
+       iphlen = iph->ihl << 2;
+       pyldsz = ntohs(iph->tot_len) - iphlen;
+
+       /* Don't compress less than 90 bytes (rfc 2394) */
+       if (pyldsz < 90) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression of tiny packet, len=%d.\n",
+                           pyldsz);
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+       
+       /* Adaptive decision */
+       if (tdb->tdb_comp_adapt_skip) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression: tdb_comp_adapt_skip=%d.\n",
+                           tdb->tdb_comp_adapt_skip);
+               tdb->tdb_comp_adapt_skip--;
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+
+       zs.zalloc = my_zcalloc;
+       zs.zfree = my_zfree;
+       zs.opaque = 0;
+       
+       /* We want to use deflateInit2 because we don't want the adler
+          header. */
+       zresult = deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -11,
+                              DEF_MEM_LEVEL,  Z_DEFAULT_STRATEGY);
+       if (zresult != Z_OK) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_compress: "
+                           "deflateInit2() returned error %d (%s), "
+                           "skipping compression.\n",
+                           zresult,
+                           zs.msg ? zs.msg : zError(zresult));
+               *flags |= IPCOMP_COMPRESSIONERROR;
+               return skb;
+       }
+       
+
+       /* Max output size. Result should be max this size.
+        * Implementation specific tweak:
+        * If it's not at least 32 bytes and 6.25% smaller than
+        * the original packet, it's probably not worth wasting
+        * the receiver's CPU cycles decompressing it.
+        * Your mileage may vary.
+        */
+       cpyldsz = pyldsz - sizeof(struct ipcomphdr) - (pyldsz <= 512 ? 32 : pyldsz >> 4);
+
+       buffer = kmalloc(cpyldsz, GFP_ATOMIC);
+       if (!buffer) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_compress: "
+                           "unable to kmalloc(%d, GFP_ATOMIC), "
+                           "skipping compression.\n",
+                           cpyldsz);
+               *flags |= IPCOMP_COMPRESSIONERROR;
+               deflateEnd(&zs);
+               return skb;
+       }
+       
+#ifdef CONFIG_IPSEC_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               int i;
+
+               c = (__u8*)iph + iphlen;
+               for(i = 0; i < pyldsz; i++, c++) {
+                       if(!(i % 16)) {
+                               printk(KERN_INFO "skb_compress:   before:");
+                       }
+                       printk("%02x ", *c);
+                       if(!((i + 1) % 16)) {
+                               printk("\n");
+                       }
+               }
+               if(i % 16) {
+                       printk("\n");
+               }
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       zs.next_in = (char *) iph + iphlen; /* start of payload */
+       zs.avail_in = pyldsz;
+       zs.next_out = buffer;     /* start of compressed payload */
+       zs.avail_out = cpyldsz;
+       
+       /* Finish compression in one step */
+       zresult = deflate(&zs, Z_FINISH);
+
+       /* Free all dynamically allocated buffers */
+       deflateEnd(&zs);
+       if (zresult != Z_STREAM_END) {
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               kfree(buffer);
+
+               /* Adjust adaptive counters */
+               if (++(tdb->tdb_comp_adapt_tries) == IPCOMP_ADAPT_INITIAL_TRIES) {
+                       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                                   "klips_debug:skb_compress: "
+                                   "first %d packets didn't compress, "
+                                   "skipping next %d\n",
+                                   IPCOMP_ADAPT_INITIAL_TRIES,
+                                   IPCOMP_ADAPT_INITIAL_SKIP);
+                       tdb->tdb_comp_adapt_skip = IPCOMP_ADAPT_INITIAL_SKIP;
+               }
+               else if (tdb->tdb_comp_adapt_tries == IPCOMP_ADAPT_INITIAL_TRIES + IPCOMP_ADAPT_SUBSEQ_TRIES) {
+                       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                                   "klips_debug:skb_compress: "
+                                   "next %d packets didn't compress, "
+                                   "skipping next %d\n",
+                                   IPCOMP_ADAPT_SUBSEQ_TRIES,
+                                   IPCOMP_ADAPT_SUBSEQ_SKIP);
+                       tdb->tdb_comp_adapt_skip = IPCOMP_ADAPT_SUBSEQ_SKIP;
+                       tdb->tdb_comp_adapt_tries = IPCOMP_ADAPT_INITIAL_TRIES;
+               }
+
+               return skb;
+       }
+       
+       /* resulting compressed size */
+       cpyldsz -= zs.avail_out;
+       
+       /* Insert IPCOMP header */
+       ((struct ipcomphdr*) ((char*) iph + iphlen))->ipcomp_nh = iph->protocol;
+       ((struct ipcomphdr*) ((char*) iph + iphlen))->ipcomp_flags = 0;
+       /* use the bottom 16 bits of the spi for the cpi.  The top 16 bits are
+          for internal reference only. */
+       ((struct ipcomphdr*) (((char*)iph) + iphlen))->ipcomp_cpi = htons((__u16)(ntohl(tdb->tdb_said.spi) & 0x0000ffff));
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_compress: "
+                   "spi=%08x, spi&0xffff=%04x, cpi=%04x, payload size: raw=%d, comp=%d.\n",
+                   ntohl(tdb->tdb_said.spi),
+                   ntohl(tdb->tdb_said.spi) & 0x0000ffff,
+                   ntohs(((struct ipcomphdr*)(((char*)iph)+iphlen))->ipcomp_cpi),
+                   pyldsz,
+                   cpyldsz);
+       
+       /* Update IP header */
+       iph->protocol = IPPROTO_COMP;
+       iph->tot_len = htons(iphlen + sizeof(struct ipcomphdr) + cpyldsz);
+#if 1 /* XXX checksum is done by ipsec_tunnel ? */
+       iph->check = 0;
+       iph->check = ip_fast_csum((char *) iph, iph->ihl);
+#endif
+       
+       /* Copy compressed payload */
+       memcpy((char *) iph + iphlen + sizeof(struct ipcomphdr),
+              buffer,
+              cpyldsz);
+       kfree(buffer);
+       
+       /* Update skb length/tail by "unputting" the shrinkage */
+       skb_put(skb,
+               cpyldsz + sizeof(struct ipcomphdr) - pyldsz);
+       
+#ifdef CONFIG_IPSEC_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               int i;
+               
+               c = (__u8*)iph + iphlen + sizeof(struct ipcomphdr);
+               for(i = 0; i < cpyldsz; i++, c++) {
+                       if(!(i % 16)) {
+                               printk(KERN_INFO "skb_compress:   result:");
+                       }
+                       printk("%02x ", *c);
+                       if(!((i + 1) % 16)) {
+                               printk("\n");
+                       }
+               }
+               if(i % 16) {
+                       printk("\n");
+               }
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+       
+       tdb->tdb_comp_adapt_skip = 0;
+       tdb->tdb_comp_adapt_tries = 0;
+       
+       return skb;
+}
+
+struct sk_buff *skb_decompress(struct sk_buff *skb, struct tdb *tdb, unsigned int *flags)
+{
+       struct sk_buff *nskb = NULL;
+
+       /* original ip header */
+       struct iphdr *oiph, *iph;
+       unsigned int iphlen, pyldsz, cpyldsz;
+       z_stream zs;
+       int zresult;
+
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_decompress: .\n");
+
+       if(!skb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "passed in NULL skb, returning ERROR.\n");
+               if (flags) *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+
+       if(!tdb && sysctl_ipsec_inbound_policy_check) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "passed in NULL tdb needed for comp alg, returning ERROR.\n");
+               if (flags) *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+
+       if (!flags) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "passed in NULL flags, returning ERROR.\n");
+#ifdef NET_21
+               kfree_skb(skb);
+#else /* NET_21 */
+               dev_kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+               return NULL;
+       }
+       
+#ifdef NET_21
+       oiph = skb->nh.iph;
+#else /* NET_21 */
+       oiph = skb->ip_hdr;
+#endif /* NET_21 */
+       
+       iphlen = oiph->ihl << 2;
+       
+       if (oiph->protocol != IPPROTO_COMP) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "called with non-IPCOMP packet (protocol=%d),"
+                           "skipping decompression.\n",
+                           oiph->protocol);
+               *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+       
+       if ( (((struct ipcomphdr*)((char*) oiph + iphlen))->ipcomp_flags != 0)
+            || ((((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_cpi
+               != htons(SADB_X_CALG_DEFLATE))
+                && sysctl_ipsec_inbound_policy_check
+                && (!tdb || (tdb && (tdb->tdb_encalg != SADB_X_CALG_DEFLATE)))) ) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "called with incompatible IPCOMP packet (flags=%d, "
+                           "cpi=%d), tdb-compalg=%d, skipping decompression.\n",
+                           ntohs(((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_flags),
+                           ntohs(((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_cpi),
+                           tdb ? tdb->tdb_encalg : 0);
+               *flags |= IPCOMP_PARMERROR;
+               
+               return skb;
+       }
+       
+       if (ntohs(oiph->frag_off) & ~0x4000) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "called with fragmented IPCOMP packet, "
+                           "skipping decompression.\n");
+               *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+       
+       /* original compressed payload size */
+       cpyldsz = ntohs(oiph->tot_len) - iphlen - sizeof(struct ipcomphdr);
+
+       zs.zalloc = my_zcalloc;
+       zs.zfree = my_zfree;
+       zs.opaque = 0;
+       
+       zs.next_in = (char *) oiph + iphlen + sizeof(struct ipcomphdr);
+       zs.avail_in = cpyldsz;
+       
+       /* Maybe we should be a bit conservative about memory
+          requirements and use inflateInit2 */
+       /* Beware, that this might make us unable to decompress packets
+          from other implementations - HINT: check PGPnet source code */
+       /* We want to use inflateInit2 because we don't want the adler
+          header. */
+       zresult = inflateInit2(&zs, -15); 
+       if (zresult != Z_OK) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "inflateInit2() returned error %d (%s), "
+                           "skipping decompression.\n",
+                           zresult,
+                           zs.msg ? zs.msg : zError(zresult));
+               *flags |= IPCOMP_DECOMPRESSIONERROR;
+
+               return skb;
+       }
+       
+       /* We have no way of knowing the exact length of the resulting
+          decompressed output before we have actually done the decompression.
+          For now, we guess that the packet will not be bigger than the
+          attached ipsec device's mtu or 16260, whichever is biggest.
+          This may be wrong, since the sender's mtu may be bigger yet.
+          XXX This must be dealt with later XXX
+       */
+       
+       /* max payload size */
+       pyldsz = skb->dev ? (skb->dev->mtu < 16260 ? 16260 : skb->dev->mtu)
+                         : (65520 - iphlen);
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_decompress: "
+                   "max payload size: %d\n", pyldsz);
+       
+       while (pyldsz > (cpyldsz + sizeof(struct ipcomphdr)) && 
+              (nskb = skb_copy_ipcomp(skb,
+                                      pyldsz - cpyldsz - sizeof(struct ipcomphdr),
+                                      GFP_ATOMIC)) == NULL) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "unable to skb_copy_ipcomp(skb, %d, GFP_ATOMIC), "
+                           "trying with less payload size.\n",
+                           pyldsz - cpyldsz - sizeof(struct ipcomphdr));
+               pyldsz >>=1;
+       }
+       
+       if (!nskb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "unable to allocate memory, dropping packet.\n");
+               *flags |= IPCOMP_DECOMPRESSIONERROR;
+               inflateEnd(&zs);
+
+               return skb;
+       }
+       
+#ifdef CONFIG_IPSEC_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               int i;
+               
+               c = (__u8*)oiph + iphlen + sizeof(struct ipcomphdr);
+               for(i = 0; i < cpyldsz; i++, c++) {
+                       if(!(i % 16)) {
+                               printk(KERN_INFO "skb_decompress:   before:");
+                       }
+                       printk("%02x ", *c);
+                       if(!((i + 1) % 16)) {
+                               printk("\n");
+                       }
+               }
+               if(i % 16) {
+                       printk("\n");
+               }
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef NET_21
+       iph = nskb->nh.iph;
+#else /* NET_21 */
+       iph = nskb->ip_hdr;
+#endif /* NET_21 */
+       zs.next_out = (char *)iph + iphlen;
+       zs.avail_out = pyldsz;
+
+       zresult = inflate(&zs, Z_SYNC_FLUSH);
+
+       /* work around a bug in zlib, which sometimes wants to taste an extra
+        * byte when being used in the (undocumented) raw deflate mode.
+        */
+       if (zresult == Z_OK && !zs.avail_in && zs.avail_out) {
+               __u8 zerostuff = 0;
+               
+               zs.next_in = &zerostuff;
+               zs.avail_in = 1;
+               zresult = inflate(&zs, Z_FINISH);
+       }
+
+       inflateEnd(&zs);
+       if (zresult != Z_STREAM_END) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "inflate() returned error %d (%s), "
+                           "skipping decompression.\n",
+                           zresult,
+                           zs.msg ? zs.msg : zError(zresult));
+               *flags |= IPCOMP_DECOMPRESSIONERROR;
+#ifdef NET_21
+               kfree_skb(nskb);
+#else /* NET_21 */
+               dev_kfree_skb(nskb, FREE_WRITE);
+#endif /* NET_21 */
+
+               return skb;
+       }
+       
+       /* Update IP header */
+       /* resulting decompressed size */
+       pyldsz -= zs.avail_out;
+       iph->tot_len = htons(iphlen + pyldsz);
+       iph->protocol = ((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_nh;
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_decompress: "
+                   "spi=%08x, spi&0xffff=%04x, cpi=%04x, payload size: comp=%d, raw=%d, nh=%d.\n",
+                   tdb ? ntohl(tdb->tdb_said.spi) : 0,
+                   tdb ? ntohl(tdb->tdb_said.spi) & 0x0000ffff : 0,
+                   ntohs(((struct ipcomphdr*)(((char*)oiph)+iphlen))->ipcomp_cpi),
+                   cpyldsz,
+                   pyldsz,
+                   iph->protocol);
+       
+#if 1 /* XXX checksum is done by ipsec_rcv ? */
+       iph->check = 0;
+       iph->check = ip_fast_csum((char*) iph, iph->ihl);
+#endif
+       
+       /* Update skb length/tail by "unputting" the unused data area */
+       skb_put(nskb, -zs.avail_out);
+       
+#ifdef NET_21
+       kfree_skb(skb);
+#else /* NET_21 */
+       dev_kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+       
+       if (iph->protocol == IPPROTO_COMP)
+       {
+#ifdef CONFIG_IPSEC_DEBUG
+               if(sysctl_ipsec_debug_ipcomp)
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_decompress: "
+                           "Eh? inner packet is also compressed, dropping.\n");
+#endif /* CONFIG_IPSEC_DEBUG */
+               
+#ifdef NET_21
+               kfree_skb(nskb);
+#else /* NET_21 */
+               dev_kfree_skb(nskb, FREE_WRITE);
+#endif /* NET_21 */
+               return NULL;
+       }
+       
+#ifdef CONFIG_IPSEC_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               int i;
+               
+               c = (__u8*)iph + iphlen;
+               for(i = 0; i < pyldsz; i++, c++) {
+                       if(!(i % 16)) {
+                               printk(KERN_INFO "skb_decompress:   result:");
+                       }
+                       printk("%02x ", *c);
+                       if(!((i + 1) % 16)) {
+                               printk("\n");
+                       }
+               }
+               if(i % 16) {
+                       printk("\n");
+               }
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+       
+       return nskb;
+}
+
+
+/* this is derived from skb_copy() in linux 2.2.14 */
+/* May be incompatible with other kernel versions!! */
+static
+struct sk_buff *skb_copy_ipcomp(struct sk_buff *skb, int data_growth, int gfp_mask)
+{
+        struct sk_buff *n;
+       struct iphdr *iph;
+        unsigned long offset;
+        unsigned int iphlen;
+       
+       if(!skb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_copy_ipcomp: "
+                           "passed in NULL skb, returning NULL.\n");
+               return NULL;
+       }
+
+        /*
+         *      Allocate the copy buffer
+         */
+       
+#ifdef NET_21
+       iph = skb->nh.iph;
+#else /* NET_21 */
+       iph = skb->ip_hdr;
+#endif /* NET_21 */
+        if (!iph) return NULL;
+        iphlen = iph->ihl << 2;
+       
+        n=alloc_skb(skb->end - skb->head + data_growth, gfp_mask);
+        if(n==NULL)
+                return NULL;
+       
+        /*
+         *      Shift between the two data areas in bytes
+         */
+       
+        offset=n->head-skb->head;
+
+        /* Set the data pointer */
+        skb_reserve(n,skb->data-skb->head);
+        /* Set the tail pointer and length */
+        skb_put(n,skb->len+data_growth);
+        /* Copy the bytes up to and including the ip header */
+        memcpy(n->head,
+              skb->head,
+              ((char *)iph - (char *)skb->head) + iphlen);
+        n->list=NULL;
+       n->next=NULL;
+       n->prev=NULL;
+        n->sk=NULL;
+        n->dev=skb->dev;
+       if (skb->h.raw)
+               n->h.raw=skb->h.raw+offset;
+       else
+               n->h.raw=NULL;
+        n->protocol=skb->protocol;
+#ifdef NET_21
+        n->csum = 0;
+        n->priority=skb->priority;
+        n->dst=dst_clone(skb->dst);
+        n->nh.raw=skb->nh.raw+offset;
+        n->is_clone=0;
+        atomic_set(&n->users, 1);
+        n->destructor = NULL;
+        n->security=skb->security;
+        memcpy(n->cb, skb->cb, sizeof(skb->cb));
+#ifdef CONFIG_IP_FIREWALL
+        n->fwmark = skb->fwmark;
+#endif
+#else /* NET_21 */
+       n->link3=NULL;
+       n->when=skb->when;
+       n->ip_hdr=(struct iphdr *)(((char *)skb->ip_hdr)+offset);
+       n->saddr=skb->saddr;
+       n->daddr=skb->daddr;
+       n->raddr=skb->raddr;
+       n->seq=skb->seq;
+       n->end_seq=skb->end_seq;
+       n->ack_seq=skb->ack_seq;
+       n->acked=skb->acked;
+       n->free=1;
+       n->arp=skb->arp;
+       n->tries=0;
+       n->lock=0;
+       n->users=0;
+       memcpy(n->proto_priv, skb->proto_priv, sizeof(skb->proto_priv));
+#endif /* NET_21 */
+       if (skb->mac.raw)
+               n->mac.raw=skb->mac.raw+offset;
+       else
+               n->mac.raw=NULL;
+        n->used=skb->used;
+        n->pkt_type=skb->pkt_type;
+       n->pkt_bridged=skb->pkt_bridged;
+       n->ip_summed=0;
+        n->stamp=skb->stamp;
+#if defined(CONFIG_SHAPER) || defined(CONFIG_SHAPER_MODULE)
+        n->shapelatency=skb->shapelatency;       /* Latency on frame */
+        n->shapeclock=skb->shapeclock;           /* Time it should go out */
+        n->shapelen=skb->shapelen;               /* Frame length in clocks */
+        n->shapestamp=skb->shapestamp;           /* Stamp for shaper    */
+        n->shapepend=skb->shapepend;             /* Pending */
+#endif
+#ifdef CONFIG_HIPPI
+        n->private.ifield=skb->private.ifield;
+#endif
+
+        return n;
+}
diff -druN linux-noipsec/net/ipsec/ipcomp.h linux/net/ipsec/ipcomp.h
--- linux-noipsec/net/ipsec/ipcomp.h    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipcomp.h    Mon Nov  6 05:30:40 2000
@@ -0,0 +1,59 @@
+/*
+ * IPCOMP zlib interface code.
+ * Copyright (C) 2000  Svenning Soerensen <svenning@post5.tele.dk>
+ * Copyright (C) 2000  Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+
+ RCSID $Id$
+
+ */
+
+/* SSS */
+
+#ifndef _IPCOMP_H
+#define _IPCOMP_H
+
+/* Prefix all global deflate symbols with "ipcomp_" to avoid collisions with ppp_deflate & ext2comp */
+#define IPCOMP_PREFIX
+
+#ifndef IPPROTO_COMP
+#define IPPROTO_COMP 108
+#endif /* IPPROTO_COMP */
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int sysctl_ipsec_debug_ipcomp;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+struct ipcomphdr {                     /* IPCOMP header */
+    __u8    ipcomp_nh;         /* Next header (protocol) */
+    __u8    ipcomp_flags;      /* Reserved, must be 0 */
+    __u16   ipcomp_cpi;                /* Compression Parameter Index */
+};
+
+extern struct inet_protocol comp_protocol;
+extern int sysctl_ipsec_debug_ipcomp;
+
+#define IPCOMP_UNCOMPRESSABLE     0x000000001
+#define IPCOMP_COMPRESSIONERROR   0x000000002
+#define IPCOMP_PARMERROR          0x000000004
+#define IPCOMP_DECOMPRESSIONERROR 0x000000008
+
+#define IPCOMP_ADAPT_INITIAL_TRIES     8
+#define IPCOMP_ADAPT_INITIAL_SKIP      4
+#define IPCOMP_ADAPT_SUBSEQ_TRIES      2
+#define IPCOMP_ADAPT_SUBSEQ_SKIP       8
+
+/* Function prototypes */
+struct sk_buff *skb_compress(struct sk_buff *skb, struct tdb *tdb, unsigned int *flags);
+struct sk_buff *skb_decompress(struct sk_buff *skb, struct tdb *tdb, unsigned int *flags);
+
+#endif /* _IPCOMP_H */
diff -druN linux-noipsec/net/ipsec/ipsec_ah.h linux/net/ipsec/ipsec_ah.h
--- linux-noipsec/net/ipsec/ipsec_ah.h  Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_ah.h  Tue Sep 12 05:21:20 2000
@@ -0,0 +1,232 @@
+/*
+ * Authentication Header declarations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include "ipsec_md5h.h"
+#include "ipsec_sha1.h"
+
+#ifndef IPPROTO_AH
+#define IPPROTO_AH 51
+#endif /* IPPROTO_AH */
+
+#define AH_FLENGTH             12              /* size of fixed part */
+#define AHMD5_KMAX             64              /* MD5 max 512 bits key */
+#define AHMD5_AMAX             12              /* MD5 96 bits of authenticator */
+
+#define AHMD596_KLEN           16              /* MD5 128 bits key */
+#define AHSHA196_KLEN          20              /* SHA1 160 bits key */
+
+#define AHMD596_ALEN           16              /* MD5 128 bits authentication length */
+#define AHSHA196_ALEN          20              /* SHA1 160 bits authentication length */
+
+#define AHMD596_BLKLEN         64              /* MD5 block length */
+#define AHSHA196_BLKLEN        64              /* SHA1 block length */
+
+#define AH_AMAX                AHSHA196_ALEN   /* keep up to date! */
+#define AHHMAC_HASHLEN         12              /* authenticator length of 96bits */
+#define AHHMAC_RPLLEN          4               /* 32 bit replay counter */
+
+#define DB_AH_PKTRX            0x0001
+#define DB_AH_PKTRX2           0x0002
+#define DB_AH_DMP              0x0004
+#define DB_AH_TDB              0x0010
+#define DB_AH_XF               0x0020
+#define DB_AH_INAU             0x0040
+#define DB_AH_REPLAY           0x0100
+
+struct ahmd5_xdata                     /* transform table data */
+{
+       __u16   amx_klen;               /* Key material length */
+       __u16   amx_alen;               /* authenticator length */
+       __u8    amx_key[AHMD5_KMAX];    /* Key material */
+};
+
+struct ahhmacmd5_edata                 /* struct for netlink interface */
+{
+       __u16   ame_klen;               /* Key material length */
+       __u16   ame_alen;               /* authenticator length */
+       __u8    ame_replayp;            /* replay protection ? */
+       __u8    ame_ooowin;             /* out-of-order window size */
+       __u16   ame_x0;                 /* filler */
+       __u8    ame_key[AHMD596_KLEN];  /* Key material */
+};
+       
+struct ahhmacsha1_edata                        /* struct for netlink interface */
+{
+       __u16   ame_klen;               /* Key material length */
+       __u16   ame_alen;               /* authenticator length */
+       __u8    ame_replayp;            /* replay protection ? */
+       __u8    ame_ooowin;             /* out-of-order window size */
+       __u16   ame_x0;                 /* filler */
+       __u8    ame_key[AHSHA196_KLEN]; /* Key material */
+};
+       
+#ifdef __KERNEL__
+
+/* General HMAC algorithm is described in RFC 2104 */
+
+#define                HMAC_IPAD       0x36
+#define                HMAC_OPAD       0x5C
+
+struct ahhmacmd5_xdata                 /* struct for xform table */
+{
+       __u16   amx_alen;               /* length of authenticator, octets  */
+       __u8    amx_replayp;            /* 1 if replay prevention active */
+       __u8    amx_ooowin;             /* out-of-order window size */
+       __u64   amx_bitmap;             /* this&next should be 8 bytes each */
+       __u32   amx_lastseq;            /* or just seq if sending!! */
+       MD5_CTX amx_octx;               /* context after H(K XOR opad) */
+       MD5_CTX amx_ictx;               /* context after H(K XOR ipad) */
+};
+
+struct ahhmacsha1_xdata                        /* struct for xform table */
+{
+       __u16   amx_alen;               /* length of authenticator, octets  */
+       __u8    amx_replayp;            /* 1 if replay prevention active */
+       __u8    amx_ooowin;             /* out-of-order window size */
+       __u64   amx_bitmap;             /* this&next should be 8 bytes each */
+       __u32   amx_lastseq;            /* or just seq if sending!! */
+       SHA1_CTX amx_octx;              /* context after H(K XOR opad) */
+       SHA1_CTX amx_ictx;              /* context after H(K XOR ipad) */
+};
+
+struct md5_ctx {
+       MD5_CTX ictx;           /* context after H(K XOR ipad) */
+       MD5_CTX octx;           /* context after H(K XOR opad) */
+};
+
+struct sha1_ctx {
+       SHA1_CTX ictx;          /* context after H(K XOR ipad) */
+       SHA1_CTX octx;          /* context after H(K XOR opad) */
+};
+
+extern struct inet_protocol ah_protocol;
+
+struct options;
+
+extern int 
+ah_rcv(struct sk_buff *skb,
+       struct device *dev,
+       struct options *opt, 
+       __u32 daddr,
+       unsigned short len,
+       __u32 saddr,
+       int redo,
+       struct inet_protocol *protocol);
+
+struct ah                              /* Generic AH header */
+{
+       __u8    ah_nh;                  /* Next header (protocol) */
+       __u8    ah_hl;                  /* AH length, in 32-bit words */
+       __u16   ah_rv;                  /* reserved, must be 0 */
+       __u32   ah_spi;                 /* Security Parameters Index */
+        __u32   ah_rpl;                 /* Replay prevention */
+       __u8    ah_data[AHHMAC_HASHLEN];/* Authentication hash */
+};
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_ah;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define AHPRINTKEYS_
+#endif /* CONFIG_IPSEC_DEBUG */
+
+/*
+ * $Log$
+ * Revision 1.12  2000/09/12 03:21:20  rgb
+ * Cleared out unused htonq.
+ *
+ * Revision 1.11  2000/09/08 19:12:55  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  2000/01/21 06:13:10  rgb
+ * Tidied up spacing.
+ * Added macros for HMAC padding magic numbers.(kravietz)
+ *
+ * Revision 1.9  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.8  1999/04/11 00:28:56  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/01/26 02:06:01  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ *
+ * Revision 1.5  1999/01/22 06:17:49  rgb
+ * Updated macro comments.
+ * Added context types to support algorithm switch code.
+ * 64-bit clean-up -- converting 'u long long' to __u64.
+ *
+ * Revision 1.4  1998/07/14 15:54:56  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.3  1998/06/30 18:05:16  rgb
+ * Comment out references to htonq.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:43  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:17  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:05:55  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new AH transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_encap.h linux/net/ipsec/ipsec_encap.h
--- linux-noipsec/net/ipsec/ipsec_encap.h       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_encap.h       Fri Sep  8 21:12:56 2000
@@ -0,0 +1,168 @@
+/*
+ * declarations relevant to encapsulation-like operations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#define SENT_IP4       0x0008          /* data is two struct in_addr */
+
+#define SEN_HDRLEN     (2*sizeof(__u8)+sizeof(__u16))
+
+#define SEN_IP4_SRCOFF (0)
+#define SEN_IP4_DSTOFF (sizeof (struct in_addr))
+#define SEN_IP4_OPTOFF (2 * sizeof (struct in_addr))
+
+#define SEN_IP4_LEN    (SENT_HDRLEN + SENT_IP4_OPTOFF)
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define DB_ER_PROCFS   0x0001
+#define DB_SP_PROCFS   0x0001
+#endif /* CONFIG_IPSEC_DEBUG */
+
+struct sockaddr_encap
+{
+       __u8    sen_len;                /* length */
+       __u8    sen_family;             /* AF_ENCAP */
+       __u16   sen_type;               /* see SENT_* */
+       union
+       {
+               struct                  /* SENT_IP4 */
+               {
+                       struct in_addr Src;
+                       struct in_addr Dst;
+               } Sip4;
+       } Sen;
+};
+
+#define sen_ip_src     Sen.Sip4.Src
+#define sen_ip_dst     Sen.Sip4.Dst
+
+#ifndef AF_ENCAP
+#define AF_ENCAP 26
+#endif /* AF_ENCAP */
+
+/*
+ * The "type" is really part of the address as far as the routing
+ * system is concerned. By using only one bit in the type field
+ * for each type, we sort-of make sure that different types of
+ * encapsulation addresses won't be matched against the wrong type.
+ */
+
+#ifdef __KERNEL__
+/*
+ * An entry in the radix tree 
+ */
+
+struct rjtentry
+{
+       struct  radij_node rd_nodes[2]; /* tree glue, and other values */
+#define        rd_key(r)       ((struct sockaddr_encap *)((r)->rd_nodes->rj_key))
+#define        rd_mask(r)      ((struct sockaddr_encap *)((r)->rd_nodes->rj_mask))
+       short   rd_flags;
+       short   rd_count;
+};
+
+/*
+ * An encapsulation route consists of a pointer to a 
+ * radix tree entry and a SAID (a destination_address/SPI/protocol triple).
+ */
+
+struct
+eroute
+{
+       struct rjtentry er_rjt;
+       struct sa_id er_said;
+       struct sockaddr_encap er_eaddr;
+       struct sockaddr_encap er_emask;
+};
+
+#define er_dst er_said.dst
+#define er_spi er_said.spi
+#define er_proto er_said.proto
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_eroute;
+extern int debug_spi;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef NETDEV_23
+#define device net_device
+#define ipsec_dev_get __dev_get_by_name
+#else
+#define ipsec_dev_get dev_get
+#endif /* NETDEV_23 */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log$
+ * Revision 1.11  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  2000/03/22 16:15:36  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.9  2000/01/21 06:13:26  rgb
+ * Added a macro for AF_ENCAP
+ *
+ * Revision 1.8  1999/12/31 14:56:55  rgb
+ * MB fix for 2.3 dev-use-count.
+ *
+ * Revision 1.7  1999/11/18 04:09:18  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.6  1999/09/24 00:34:13  rgb
+ * Add Marc Boucher's support for 2.3.xx+.
+ *
+ * Revision 1.5  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.4  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.3  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.2  1998/07/14 18:19:33  rgb
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:27:44  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/21 21:29:10  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:05:58  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Minor cosmetic changes.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_esp.h linux/net/ipsec/ipsec_esp.h
--- linux-noipsec/net/ipsec/ipsec_esp.h Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_esp.h Fri Sep  8 21:12:56 2000
@@ -0,0 +1,257 @@
+/*
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include "ipsec_md5h.h"
+#include "ipsec_sha1.h"
+
+#ifndef IPPROTO_ESP
+#define IPPROTO_ESP 50
+#endif /* IPPROTO_ESP */
+
+#define EMT_ESPDESCBC_ULEN     20      /* coming from user mode */
+#define EMT_ESPDES_KMAX                64      /* 512 bit secret key enough? */
+#define EMT_ESPDES_KEY_SZ      8       /* 56 bit secret key with parity = 64 bits */
+#define EMT_ESP3DES_KEY_SZ     24      /* 168 bit secret key with parity = 192 bits */
+#define EMT_ESPDES_IV_SZ       8       /* IV size */
+#define ESP_DESCBC_BLKLEN       8       /* DES-CBC block size */
+
+#define DB_ES_PKTRX    0x0001
+#define DB_ES_PKTRX2   0x0002
+#define DB_ES_TDB      0x0010
+#define DB_ES_XF       0x0020
+#define DB_ES_IPAD     0x0040
+#define DB_ES_INAU     0x0080
+#define DB_ES_OINFO    0x0100
+#define DB_ES_OINFO2   0x0200
+#define DB_ES_OH       0x0400
+#define DB_ES_REPLAY   0x0800
+
+struct espblkrply_edata
+{
+       __u16   eme_klen;               /* encryption key length */
+       __u16   ame_klen;               /* authentication key length */
+       __u16   eme_flags;              /* see below */
+       __u16   eme_ooowin;             /* out-of-order window size */
+#if 1
+       __u16   eme_ivlen;              /* IV length */
+       __u16   filler;
+       union
+       {
+               __u8    Iv[8];          /* that's enough space */
+               __u32   Ivl[2];
+               __u64   Ivq;
+       }Iu;
+#define eme_iv Iu.Iv
+#define eme_ivl Iu.Ivl
+#define eme_ivq Iu.Ivq
+#endif
+       __u8    eme_key[EMT_ESPDES_KMAX]; /* the encryption raw key */
+       __u8    ame_key[AH_AMAX];       /* the authentication raw key */
+};
+
+#ifdef __KERNEL__
+struct esp3desmd5_xdata
+{
+       __u8    edmx_flags;             /* same as before */
+       __u8    edmx_ooowin;            /* out-of-order window size */
+       __u16   edmx_ivlen;             /* IV length */
+       __u32   edmx_bitmap;            /* this&next should be 4 bytes each */
+       __u32   edmx_lastseq;           /* in host order */
+       __u32   edmx_eks1[16][2];       /* the first key schedule */
+       __u32   edmx_eks2[16][2];       /* the second key schedule */
+       __u32   edmx_eks3[16][2];       /* the third key schedule */
+       __u32   edmx_iv[2];             /* constant IV */
+       MD5_CTX edmx_ictx;              /* derived from HMAC_key */
+       MD5_CTX edmx_octx;              /* ditto */
+};
+
+struct espnullmd5_xdata
+{
+       __u8    edmx_flags;             /* same as before */
+       __u8    edmx_ooowin;            /* out-of-order window size */
+       __u32   edmx_bitmap;            /* this&next should be 4 bytes each */
+       __u32   edmx_lastseq;           /* in host order */
+       MD5_CTX edmx_ictx;              /* derived from HMAC_key */
+       MD5_CTX edmx_octx;              /* ditto */
+};
+
+struct esp3dessha1_xdata
+{
+       __u8    edmx_flags;             /* same as before */
+       __u8    edmx_ooowin;            /* out-of-order window size */
+       __u16   edmx_ivlen;             /* IV length */
+       __u32   edmx_bitmap;            /* this&next should be 4 bytes each */
+       __u32   edmx_lastseq;           /* in host order */
+       __u32   edmx_eks1[16][2];       /* the first key schedule */
+       __u32   edmx_eks2[16][2];       /* the second key schedule */
+       __u32   edmx_eks3[16][2];       /* the third key schedule */
+       __u32   edmx_iv[2];             /* constant IV */
+       SHA1_CTX edmx_ictx;             /* derived from HMAC_key */
+       SHA1_CTX edmx_octx;             /* ditto */
+};
+
+struct espnullsha1_xdata
+{
+       __u8    edmx_flags;             /* same as before */
+       __u8    edmx_ooowin;            /* out-of-order window size */
+       __u32   edmx_bitmap;            /* this&next should be 4 bytes each */
+       __u32   edmx_lastseq;           /* in host order */
+       SHA1_CTX edmx_ictx;             /* derived from HMAC_key */
+       SHA1_CTX edmx_octx;             /* ditto */
+};
+
+struct esp3des_xdata
+{
+       __u8    edmx_flags;             /* same as before */
+       __u8    edmx_ooowin;            /* out-of-order window size */
+       __u16   edmx_ivlen;             /* IV length */
+       __u32   edmx_bitmap;            /* this&next should be 4 bytes each */
+       __u32   edmx_lastseq;           /* in host order */
+       __u32   edmx_eks1[16][2];       /* the first key schedule */
+       __u32   edmx_eks2[16][2];       /* the second key schedule */
+       __u32   edmx_eks3[16][2];       /* the third key schedule */
+       __u32   edmx_iv[2];             /* constant IV */
+};
+
+struct des_eks {
+       __u32   eks[16][2];     /* the key schedule */
+};
+
+extern struct inet_protocol esp_protocol;
+
+struct options;
+
+extern int
+esp_rcv(struct sk_buff *skb,
+       struct device *dev,
+       struct options *opt, 
+       __u32 daddr,
+       unsigned short len,
+       __u32 saddr,
+       int redo,
+       struct inet_protocol *protocol);
+
+struct esp
+{
+       __u32   esp_spi;                /* Security Parameters Index */
+        __u32   esp_rpl;                /* Replay counter */
+       __u8    esp_iv[8];              /* iv */
+};
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_esp;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define ESPPRINTKEYS_
+#endif /* CONFIG_IPSEC_DEBUG */
+
+/*
+ * $Log$
+ * Revision 1.13  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.12  2000/08/01 14:51:50  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.11  2000/01/10 16:36:20  rgb
+ * Ditch last of EME option flags, including initiator.
+ *
+ * Revision 1.10  1999/12/07 18:16:22  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.9  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.8  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.7  1999/01/26 02:06:00  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ *
+ * Revision 1.6  1999/01/22 15:22:05  rgb
+ * Re-enable IV in the espblkrply_edata structure to avoid breaking pluto
+ * until pluto can be fixed properly.
+ *
+ * Revision 1.5  1999/01/22 06:18:16  rgb
+ * Updated macro comments.
+ * Added key schedule types to support algorithm switch code.
+ *
+ * Revision 1.4  1998/08/12 00:07:32  rgb
+ * Added data structures for new xforms: null, {,3}dessha1.
+ *
+ * Revision 1.3  1998/07/14 15:57:01  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:45  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.6  1998/06/05 02:28:08  rgb
+ * Minor comment fix.
+ *
+ * Revision 1.5  1998/05/27 22:34:00  rgb
+ * Changed structures to accomodate key separation.
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:20  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:00  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96 transform.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new ESP transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_init.c linux/net/ipsec/ipsec_init.c
--- linux-noipsec/net/ipsec/ipsec_init.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_init.c        Wed Nov 29 21:14:06 2000
@@ -0,0 +1,1149 @@
+/*
+ * Initialization code, and /proc file system interface code.
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_init_c_version[] = "RCSID $Id$";
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/in.h>          /* struct sockaddr_in */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* SPINLOCK_23 */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#endif /* NET_21 */
+#include <asm/checksum.h>
+#include <net/ip.h>
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#endif /* CONFIG_PROC_FS */
+#ifdef NETLINK_SOCK
+#include <linux/netlink.h>
+#else
+#include <net/netlink.h>
+#endif
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+#include "ipsec_tunnel.h"
+
+#include "version.c"
+
+#include "ipsec_rcv.h"
+#include "ipsec_ah.h"
+#include "ipsec_esp.h"
+
+#ifdef CONFIG_IPSEC_IPCOMP
+#include "ipcomp.h"
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+extern char *radij_c_version;
+
+#ifdef CONFIG_IPSEC_DEBUG
+int debug_eroute = 0;
+int debug_spi = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef CONFIG_PROC_FS
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+ipsec_eroute_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       struct wsbuf w = {buffer, length, offset, 0, 0, 0, 0};
+
+#ifdef CONFIG_IPSEC_DEBUG
+       if (debug_radij & DB_RJ_DUMPTREES)
+         rj_dumptrees();                       /* XXXXXXXXX */
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_eroute_get_info: buffer=0x%p,"
+                   " *start=0x%x, offset=%d, length=%d\n",
+                   buffer, (u_int)*start, (int)offset, length);
+
+       spin_lock_bh(&eroute_lock);
+
+       rj_walktree(rnh, ipsec_rj_walker_procprint, &w);
+/*     rj_walktree(mask_rjhead, ipsec_rj_walker_procprint, &w); */
+
+       spin_unlock_bh(&eroute_lock);
+
+       *start = buffer + (offset - w.begin);   /* Start of wanted data */
+       w.len -= (offset - w.begin);                    /* Start slop */
+       if (w.len > length)
+               w.len = length;
+       return w.len;
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+ipsec_spi_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       int len = 0;
+       off_t pos = 0, begin = 0;
+       int i;
+       struct tdb *tdbp;
+       char sa[SATOA_BUF];
+       char buf_s[ADDRTOA_BUF];
+#if 0
+       char buf_d[ADDRTOA_BUF];
+#endif
+       size_t sa_len;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_spi_get_info: buffer=0x%p,"
+                   "*start=0x%x, offset=%d, length=%d\n",
+                   buffer, (u_int)*start, (int)offset, length);
+       
+       spin_lock_bh(&tdb_lock);
+       
+       for (i = 0; i < TDB_HASHMOD; i++) {
+               for (tdbp = tdbh[i]; tdbp; tdbp = tdbp->tdb_hnext) {
+                       sa_len = satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+                       len += sprintf(buffer + len, "%s ", sa);
+                       len += sprintf(buffer + len, "%s%s%s", TDB_XFORM_NAME(tdbp));
+                       len += sprintf(buffer + len, ": dir=%s",
+                                      (tdbp->tdb_flags & EMT_INBOUND) ?
+                                      "in " : "out");
+#if 0
+                       if((tdbp->tdb_said.proto == IPPROTO_IPIP) && tdbp->tdb_addr_s && tdbp->tdb_addr_d) {
+                               addrtoa(((struct sockaddr_in*)(tdbp->tdb_addr_s))->sin_addr,
+                                       0, buf_s, sizeof(buf_s));
+                               addrtoa(((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr,
+                                       0, buf_d, sizeof(buf_d));
+                               len += sprintf(buffer + len, " %s -> %s",
+                                              buf_s, buf_d);
+                       }
+#else
+                       if(tdbp->tdb_addr_s) {
+                               addrtoa(((struct sockaddr_in*)(tdbp->tdb_addr_s))->sin_addr,
+                                       0, buf_s, sizeof(buf_s));
+                               len += sprintf(buffer + len, " src=%s",
+                                              buf_s);
+                       }
+#endif
+
+                       if(tdbp->tdb_iv_bits) {
+                               int j;
+                               len += sprintf(buffer + len, " iv_bits=%dbits iv=0x",
+                                              tdbp->tdb_iv_bits);
+                               for(j = 0; j < tdbp->tdb_iv_bits / 8; j++) {
+                                       len += sprintf(buffer + len, "%02x",
+                                                      (__u32)((__u8*)(tdbp->tdb_iv))[j]);
+                               }
+                       }
+                       if(tdbp->tdb_encalg || tdbp->tdb_authalg) {
+                               if(tdbp->tdb_replaywin) {
+                                       len += sprintf(buffer + len, " ooowin=%d",
+                                                      tdbp->tdb_replaywin);
+                               }
+                               if(tdbp->tdb_replaywin_errs) {
+                                       len += sprintf(buffer + len, " ooo_errs=%d",
+                                                      tdbp->tdb_replaywin_errs);
+                               }
+                               if(tdbp->tdb_replaywin_lastseq) {
+                                       len += sprintf(buffer + len, " seq=%d",
+                                                     tdbp->tdb_replaywin_lastseq);
+                               }
+                               if(tdbp->tdb_replaywin_bitmap) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                                       len += sprintf(buffer + len, " bit=0x%Lx",
+                                                      tdbp->tdb_replaywin_bitmap);
+#else
+                                       len += sprintf(buffer + len, " bit=0x%x%08x",
+                                                      (__u32)(tdbp->tdb_replaywin_bitmap >> 32),
+                                                      (__u32)tdbp->tdb_replaywin_bitmap);
+#endif
+                               }
+                               if(tdbp->tdb_replaywin_maxdiff) {
+                                       len += sprintf(buffer + len, " max_seq_diff=%d",
+                                                      tdbp->tdb_replaywin_maxdiff);
+                               }
+                       }
+                       if(tdbp->tdb_flags & ~EMT_INBOUND) {
+                               len += sprintf(buffer + len, " flags=0x%x",
+                                              tdbp->tdb_flags & ~EMT_INBOUND);
+                               len += sprintf(buffer + len, "<");
+                               /* flag printing goes here */
+                               len += sprintf(buffer + len, ">");
+                       }
+                       if(tdbp->tdb_auth_bits) {
+                               len += sprintf(buffer + len, " alen=%d",
+                                              tdbp->tdb_auth_bits);
+                       }
+                       if(tdbp->tdb_key_bits_a) {
+                               len += sprintf(buffer + len, " aklen=%d",
+                                              tdbp->tdb_key_bits_a);
+                       }
+                       if(tdbp->tdb_auth_errs) {
+                               len += sprintf(buffer + len, " auth_errs=%d",
+                                              tdbp->tdb_auth_errs);
+                       }
+                       if(tdbp->tdb_key_bits_e) {
+                               len += sprintf(buffer + len, " eklen=%d",
+                                              tdbp->tdb_key_bits_e);
+                       }
+                       if(tdbp->tdb_encsize_errs) {
+                               len += sprintf(buffer + len, " encr_size_errs=%d",
+                                              tdbp->tdb_encsize_errs);
+                       }
+                       if(tdbp->tdb_encpad_errs) {
+                               len += sprintf(buffer + len, " encr_pad_errs=%d",
+                                              tdbp->tdb_encpad_errs);
+                       }
+                       
+                       len += sprintf(buffer + len, " life(c,s,h)=");
+                       if(tdbp->tdb_lifetime_allocations_c > 1 || 
+                          tdbp->tdb_lifetime_allocations_s ||
+                          tdbp->tdb_lifetime_allocations_h) {
+                               len += sprintf(buffer + len, "alloc(%d,%d,%d)",
+                                              (int)(jiffies - tdbp->tdb_lifetime_allocations_c),
+                                              tdbp->tdb_lifetime_allocations_s,
+                                              (int)tdbp->tdb_lifetime_allocations_h);
+                       }
+                       if(tdbp->tdb_lifetime_bytes_c ||
+                          tdbp->tdb_lifetime_bytes_s ||
+                          tdbp->tdb_lifetime_bytes_h) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += sprintf(buffer + len, "bytes(%Ld,%Ld,%Ld)",
+                                              tdbp->tdb_lifetime_bytes_c,
+                                              tdbp->tdb_lifetime_bytes_s,
+                                              tdbp->tdb_lifetime_bytes_h);
+#else /* XXX high 32 bits are not displayed */
+                               len += sprintf(buffer + len, "bytes(%lu,%lu,%lu)",
+                                              (unsigned long)tdbp->tdb_lifetime_bytes_c,
+                                              (unsigned long)tdbp->tdb_lifetime_bytes_s,
+                                              (unsigned long)tdbp->tdb_lifetime_bytes_h);
+#endif
+
+                       }
+                       if(tdbp->tdb_lifetime_addtime_c ||
+                          tdbp->tdb_lifetime_addtime_s ||
+                          tdbp->tdb_lifetime_addtime_h) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += sprintf(buffer + len, "add(%Ld,%Ld,%Ld)",
+                                              jiffies / HZ - tdbp->tdb_lifetime_addtime_c,
+                                              tdbp->tdb_lifetime_addtime_s,
+                                              tdbp->tdb_lifetime_addtime_h);
+#else
+                               len += sprintf(buffer + len, "add(%lu,%lu,%lu)",
+                                              jiffies / HZ - (unsigned long)tdbp->tdb_lifetime_addtime_c,
+                                              (unsigned long)tdbp->tdb_lifetime_addtime_s,
+                                              (unsigned long)tdbp->tdb_lifetime_addtime_h);
+#endif
+                       }
+                       if(tdbp->tdb_lifetime_usetime_c ||
+                          tdbp->tdb_lifetime_usetime_s ||
+                          tdbp->tdb_lifetime_usetime_h) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += sprintf(buffer + len, "use(%Ld,%Ld,%Ld)",
+                                              tdbp->tdb_lifetime_usetime_c ?
+                                               jiffies / HZ - tdbp->tdb_lifetime_usetime_c : 0,
+                                              tdbp->tdb_lifetime_usetime_s,
+                                              tdbp->tdb_lifetime_usetime_h);
+#else
+                               len += sprintf(buffer + len, "use(%lu,%lu,%lu)",
+                                              tdbp->tdb_lifetime_usetime_c ?
+                                               jiffies / HZ - (unsigned long)tdbp->tdb_lifetime_usetime_c : 0,
+                                              (unsigned long)tdbp->tdb_lifetime_usetime_s,
+                                              (unsigned long)tdbp->tdb_lifetime_usetime_h);
+#endif
+                       }
+                       if(tdbp->tdb_lifetime_packets_c ||
+                          tdbp->tdb_lifetime_packets_s ||
+                          tdbp->tdb_lifetime_packets_h) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += sprintf(buffer + len, "packets(%Ld,%Ld,%Ld)",
+                                              tdbp->tdb_lifetime_packets_c,
+                                              tdbp->tdb_lifetime_packets_s,
+                                              tdbp->tdb_lifetime_packets_h);
+#else
+                               len += sprintf(buffer + len, "packets(%lu,%lu,%lu)",
+                                              (unsigned long)tdbp->tdb_lifetime_packets_c,
+                                              (unsigned long)tdbp->tdb_lifetime_packets_s,
+                                              (unsigned long)tdbp->tdb_lifetime_packets_h);
+#endif
+                       }
+
+                       if(tdbp->tdb_lifetime_usetime_c) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += sprintf(buffer + len, " idle=%Ld",
+                                              jiffies / HZ - tdbp->tdb_lifetime_usetime_l);
+#else
+                               len += sprintf(buffer + len, " idle=%lu",
+                                              jiffies / HZ - (unsigned long)tdbp->tdb_lifetime_usetime_l);
+#endif
+                       }
+
+#ifdef CONFIG_IPSEC_IPCOMP
+                       if(tdbp->tdb_said.proto == IPPROTO_COMP &&
+                          (tdbp->tdb_comp_ratio_dbytes ||
+                           tdbp->tdb_comp_ratio_cbytes)) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += sprintf(buffer + len, " ratio=%Ld:%Ld",
+                                              tdbp->tdb_comp_ratio_dbytes,
+                                              tdbp->tdb_comp_ratio_cbytes);
+#else
+                               len += sprintf(buffer + len, " ratio=%lu:%lu",
+                                              (unsigned long)tdbp->tdb_comp_ratio_dbytes,
+                                              (unsigned long)tdbp->tdb_comp_ratio_cbytes);
+#endif
+                       }
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+                       len += sprintf(buffer + len, "\n");
+
+                       pos = begin + len;
+                       if(pos < offset) {
+                               len = 0;
+                               begin = pos;
+                       }
+                       if (pos > offset + length) {
+                               goto done_spi_i;
+                       }
+               }
+       }
+
+ done_spi_i:   
+       spin_unlock_bh(&tdb_lock);
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+ipsec_spigrp_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       int len = 0;
+       off_t pos = 0, begin = 0;
+       int i;
+       struct tdb *tdbp, *tdbp2;
+       char sa[SATOA_BUF];
+       size_t sa_len;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_spigrp_get_info: buffer=0x%p,"
+                   " *start=0x%x, offset=%d, length=%d\n",
+                   buffer, (u_int)*start, (int)offset, length);
+
+       spin_lock_bh(&tdb_lock);
+       
+       for (i = 0; i < TDB_HASHMOD; i++) {
+               for (tdbp = tdbh[i]; tdbp; tdbp = tdbp->tdb_hnext)
+               {
+                       if(!tdbp->tdb_inext)
+                       {
+                               tdbp2 = tdbp;
+                               while(tdbp2) {
+                                       sa_len = satoa(tdbp2->tdb_said, 0, sa, SATOA_BUF);
+                                       len += sprintf(buffer + len, "%s ",
+                                                      sa);
+                                       tdbp2 = tdbp2->tdb_onext;
+                               }
+                               len += sprintf(buffer + len, "\n");
+                               pos = begin + len;
+                               if(pos < offset) {
+                                       len = 0;
+                                       begin = pos;
+                               }
+                               if (pos > offset + length) {
+                                       goto done_spigrp_i;
+                               }
+                       }
+               }
+       }
+
+ done_spigrp_i:        
+       spin_unlock_bh(&tdb_lock);
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+ipsec_tncfg_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       int len = 0;
+       off_t pos = 0, begin = 0;
+       int i;
+       char name[9];
+       struct device *dev, *privdev;
+       struct ipsecpriv *priv;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_tncfg_get_info: buffer=0x%p,"
+                   "*start=0x%x, offset=%d, length=%d\n",
+                   buffer, (u_int)*start, (int)offset, length);
+
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               sprintf(name, "ipsec%d", i);
+               dev = ipsec_dev_get(name);
+               if(dev) {
+                       priv = (struct ipsecpriv *)(dev->priv);
+                       len += sprintf(buffer + len, "%s",
+                                      dev->name);
+                       if(priv) {
+                               privdev = (struct device *)(priv->dev);
+                               len += sprintf(buffer + len, " -> %s",
+                                              privdev ? privdev->name : "NULL");
+                               len += sprintf(buffer + len, " mtu=%d -> %d",
+                                              /* priv */ dev->mtu, privdev ? privdev->mtu : 0);
+                       } else {
+                               KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                                           "klips_debug:ipsec_tncfg_get_info: device '%s' has no private data space!\n",
+                                           dev->name);
+                       }
+                       len += sprintf(buffer + len, "\n");
+
+                       pos = begin + len;
+                       if(pos < offset) {
+                               len = 0;
+                               begin = pos;
+                       }
+                       else if (pos > offset + length) {
+                               break;
+                       }
+               }
+       }
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+ipsec_version_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       int len = 0;
+       off_t begin = 0;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "buffer=0x%p, *start=0x%x, offset=%d, length=%d\n",
+                   buffer, (u_int)*start, (int)offset, length);
+
+       len += sprintf(buffer + len, "FreeS/WAN version: %s\n", freeswan_version);
+#if 0
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "ipsec_init version: %s\n",
+                   ipsec_init_c_version);
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "ipsec_tunnel version: %s\n",
+                   ipsec_tunnel_c_version);
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "ipsec_netlink version: %s\n",
+                   ipsec_netlink_c_version);
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "radij_c_version: %s\n",
+                   radij_c_version);
+#endif
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+#ifdef CONFIG_IPSEC_DEBUG
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+ipsec_klipsdebug_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       int len = 0;
+       off_t begin = 0;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_klipsdebug_get_info: buffer=0x%p,"
+                   "*start=0x%x, offset=%d, length=%d\n",
+                   buffer, (u_int)*start, (int)offset, length);
+
+       len += sprintf(buffer + len, "debug_tunnel=%08x.\n", debug_tunnel);
+       len += sprintf(buffer + len, "debug_netlink=%08x.\n", debug_netlink);
+       len += sprintf(buffer + len, "debug_xform=%08x.\n", debug_xform);
+       len += sprintf(buffer + len, "debug_eroute=%08x.\n", debug_eroute);
+       len += sprintf(buffer + len, "debug_spi=%08x.\n", debug_spi);
+       len += sprintf(buffer + len, "debug_radij=%08x.\n", debug_radij);
+       len += sprintf(buffer + len, "debug_esp=%08x.\n", debug_esp);
+       len += sprintf(buffer + len, "debug_ah=%08x.\n", debug_ah);
+       len += sprintf(buffer + len, "debug_rcv=%08x.\n", debug_rcv);
+       len += sprintf(buffer + len, "debug_pfkey=%08x.\n", debug_pfkey);
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifndef PROC_FS_2325
+struct proc_dir_entry ipsec_eroute =
+{
+       0,
+       12, "ipsec_eroute",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_eroute_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_spi =
+{
+       0,
+       9, "ipsec_spi",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_spi_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_spigrp =
+{
+       0,
+       12, "ipsec_spigrp",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_spigrp_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_tncfg =
+{
+       0,
+       11, "ipsec_tncfg",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_tncfg_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_version =
+{
+       0,
+       13, "ipsec_version",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_version_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+#ifdef CONFIG_IPSEC_DEBUG
+struct proc_dir_entry ipsec_klipsdebug =
+{
+       0,
+       16, "ipsec_klipsdebug",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_klipsdebug_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* !PROC_FS_2325 */
+#endif /* CONFIG_PROC_FS */
+
+int ipsec_device_event(struct notifier_block *dnot, unsigned long event, void *ptr);
+/*
+ * the following structure is required so that we receive
+ * event notifications when network devices are enabled and
+ * disabled (ifconfig up and down).
+ */
+static struct notifier_block ipsec_dev_notifier={
+       ipsec_device_event,
+       NULL,
+       0
+};
+
+#ifdef CONFIG_SYSCTL
+extern int ipsec_sysctl_register(void);
+extern void ipsec_sysctl_unregister(void);
+#endif
+
+/* void */
+int
+ipsec_init(void)
+{
+       int error = 0;
+
+#ifdef CONFIG_PROC_FS
+#  ifndef PROC_FS_2325
+#    ifdef PROC_FS_21
+       proc_register(proc_net, &ipsec_eroute);
+       proc_register(proc_net, &ipsec_spi);
+       proc_register(proc_net, &ipsec_spigrp);
+       proc_register(proc_net, &ipsec_tncfg);
+       proc_register(proc_net, &ipsec_version);
+#      ifdef CONFIG_IPSEC_DEBUG
+       proc_register(proc_net, &ipsec_klipsdebug);
+#      endif /* CONFIG_IPSEC_DEBUG */
+#    else /* PROC_FS_21 */
+       proc_register_dynamic(&proc_net, &ipsec_eroute);
+       proc_register_dynamic(&proc_net, &ipsec_spi);
+       proc_register_dynamic(&proc_net, &ipsec_spigrp);
+       proc_register_dynamic(&proc_net, &ipsec_tncfg);
+       proc_register_dynamic(&proc_net, &ipsec_version);
+#      ifdef CONFIG_IPSEC_DEBUG
+       proc_register_dynamic(&proc_net, &ipsec_klipsdebug);
+#      endif /* CONFIG_IPSEC_DEBUG */
+#    endif /* PROC_FS_21 */
+#  else /* !PROC_FS_2325 */
+       proc_net_create ("ipsec_eroute", 0, ipsec_eroute_get_info);
+       proc_net_create ("ipsec_spi", 0, ipsec_spi_get_info);
+       proc_net_create ("ipsec_spigrp", 0, ipsec_spigrp_get_info);
+       proc_net_create ("ipsec_tncfg", 0, ipsec_tncfg_get_info);
+       proc_net_create ("ipsec_version", 0, ipsec_version_get_info);
+#    ifdef CONFIG_IPSEC_DEBUG
+       proc_net_create ("ipsec_klipsdebug", 0, ipsec_klipsdebug_get_info);
+#    endif /* CONFIG_IPSEC_DEBUG */
+#  endif /* !PROC_FS_2325 */
+#endif          /* CONFIG_PROC_FS */
+
+       printk("klips_debug:ipsec_init: ipsec module loading. freeswan version: %s\n",
+              freeswan_version);
+
+#ifndef SPINLOCK
+       tdb_lock.lock = 0;
+       eroute_lock.lock = 0;
+#endif /* !SPINLOCK */
+
+       error |= ipsec_tdbinit();
+       error |= ipsec_radijinit();
+
+       error |= pfkey_init();
+
+       register_netdevice_notifier(&ipsec_dev_notifier);
+
+#ifdef CONFIG_IPSEC_ESP
+       inet_add_protocol(&esp_protocol);
+#endif /* CONFIG_IPSEC_ESP */
+
+#ifdef CONFIG_IPSEC_AH
+       inet_add_protocol(&ah_protocol);
+#endif /* CONFIG_IPSEC_AH */
+
+#if 0
+#ifdef CONFIG_IPSEC_IPCOMP
+  inet_add_protocol(&comp_protocol);
+#endif /* CONFIG_IPSEC_IPCOMP */
+#endif
+
+       error |= ipsec_tunnel_init_devices();
+
+#ifdef CONFIG_SYSCTL
+        error |= ipsec_sysctl_register();
+#endif                                                                          
+       return error;
+}      
+
+
+/* void */
+int
+ipsec_cleanup(void)
+{
+       int error = 0;
+
+#ifdef CONFIG_SYSCTL
+        ipsec_sysctl_unregister();
+#endif                                                                          
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: calling ipsec_tunnel_cleanup_devices.\n");
+       error |= ipsec_tunnel_cleanup_devices();
+
+#if 0
+#ifdef CONFIG_IPSEC_IPCOMP
+  if (inet_del_protocol(&comp_protocol) < 0)
+    printk(KERN_INFO "klips_debug:ipsec_cleanup:comp close: can't remove protocol\n");
+#endif
+#endif
+#ifdef CONFIG_IPSEC_AH
+       if ( inet_del_protocol(&ah_protocol) < 0 )
+               printk(KERN_INFO "klips_debug:ipsec_cleanup:ah close: can't remove protocol\n");
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_ESP
+       if ( inet_del_protocol(&esp_protocol) < 0 )
+               printk(KERN_INFO "klips_debug:ipsec_cleanup:esp close: can't remove protocol\n");
+#endif /* CONFIG_IPSEC_ESP */
+
+       unregister_netdevice_notifier(&ipsec_dev_notifier);
+
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: calling ipsec_tdbcleanup.\n");
+       error |= ipsec_tdbcleanup(0);
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: calling ipsec_radijcleanup.\n");
+       error |= ipsec_radijcleanup();
+       
+       KLIPS_PRINT(debug_pfkey, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: calling pfkey_cleanup.\n");
+       error |= pfkey_cleanup();
+
+#ifdef CONFIG_PROC_FS
+#  ifndef PROC_FS_2325
+#    ifdef CONFIG_IPSEC_DEBUG
+       if (proc_net_unregister(ipsec_klipsdebug.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: cannot unregister /proc/net/ipsec_klipsdebug\n");
+#    endif /* CONFIG_IPSEC_DEBUG */
+       if (proc_net_unregister(ipsec_version.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: cannot unregister /proc/net/ipsec_version\n");
+       if (proc_net_unregister(ipsec_eroute.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: cannot unregister /proc/net/ipsec_eroute\n");
+       if (proc_net_unregister(ipsec_spi.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: cannot unregister /proc/net/ipsec_spi\n");
+       if (proc_net_unregister(ipsec_spigrp.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: cannot unregister /proc/net/ipsec_spigrp\n");
+       if (proc_net_unregister(ipsec_tncfg.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: cannot unregister /proc/net/ipsec_tncfg\n");
+#  else /* !PROC_FS_2325 */
+#    ifdef CONFIG_IPSEC_DEBUG
+       proc_net_remove ("ipsec_klipsdebug");
+#    endif /* CONFIG_IPSEC_DEBUG */
+       proc_net_remove ("ipsec_eroute");
+       proc_net_remove ("ipsec_spi");
+       proc_net_remove ("ipsec_spigrp");
+       proc_net_remove ("ipsec_tncfg");
+       proc_net_remove ("ipsec_version");
+#  endif /* !PROC_FS_2325 */
+#endif          /* CONFIG_PROC_FS */
+
+       return error;
+}
+
+#ifdef MODULE
+int
+init_module(void)
+{
+       int error = 0;
+
+       error |= ipsec_init();
+
+       return error;
+}
+
+int
+cleanup_module(void)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:cleanup_module: calling ipsec_cleanup.\n");
+
+       error |= ipsec_cleanup();
+
+       KLIPS_PRINT(1, "klips_debug:cleanup_module: ipsec module unloaded.\n");
+
+       return error;
+}
+#endif /* MODULE */
+
+/*
+ * $Log$
+ * Revision 1.63  2000/11/29 20:14:06  rgb
+ * Add src= to the output of /proc/net/ipsec_spi and delete dst from IPIP.
+ *
+ * Revision 1.62  2000/11/06 04:31:24  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ * Fixed longlong for pre-2.4 kernels (Svenning).
+ * Add Svenning's adaptive content compression.
+ * Disabled registration of ipcomp handler.
+ *
+ * Revision 1.61  2000/10/11 13:37:54  rgb
+ * #ifdef out debug print that causes proc/net/ipsec_version to oops.
+ *
+ * Revision 1.60  2000/09/20 03:59:01  rgb
+ * Change static info functions to DEBUG_NO_STATIC to reveal function names
+ * in oopsen.
+ *
+ * Revision 1.59  2000/09/16 01:06:26  rgb
+ * Added cast of var to silence compiler warning about long fed to int
+ * format.
+ *
+ * Revision 1.58  2000/09/15 11:37:01  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.57  2000/09/12 03:21:50  rgb
+ * Moved radij_c_version printing to ipsec_version_get_info().
+ * Reformatted ipsec_version_get_info().
+ * Added sysctl_{,un}register() calls.
+ *
+ * Revision 1.56  2000/09/08 19:16:50  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.55  2000/08/30 05:19:03  rgb
+ * Cleaned up no longer used spi_next, netlink register/unregister, other
+ * minor cleanup.
+ * Removed cruft replaced by TDB_XFORM_NAME.
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Moved debug version strings to printk when /proc/net/ipsec_version is
+ * called.
+ *
+ * Revision 1.54  2000/08/20 18:31:05  rgb
+ * Changed cosmetic alignment in spi_info.
+ * Changed addtime and usetime to use actual value which is relative
+ * anyways, as intended. (Momchil)
+ *
+ * Revision 1.53  2000/08/18 17:37:03  rgb
+ * Added an (int) cast to shut up the compiler...
+ *
+ * Revision 1.52  2000/08/01 14:51:50  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.51  2000/07/25 20:41:22  rgb
+ * Removed duplicate parameter in spi_getinfo.
+ *
+ * Revision 1.50  2000/07/17 03:21:45  rgb
+ * Removed /proc/net/ipsec_spinew.
+ *
+ * Revision 1.49  2000/06/28 05:46:51  rgb
+ * Renamed ivlen to iv_bits for consistency.
+ * Changed output of add and use times to be relative to now.
+ *
+ * Revision 1.48  2000/05/11 18:26:10  rgb
+ * Commented out calls to netlink_attach/detach to avoid activating netlink
+ * in the kenrel config.
+ *
+ * Revision 1.47  2000/05/10 22:35:26  rgb
+ * Comment out most of the startup version information.
+ *
+ * Revision 1.46  2000/03/22 16:15:36  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.45  2000/03/16 06:40:48  rgb
+ * Hardcode PF_KEYv2 support.
+ *
+ * Revision 1.44  2000/01/22 23:19:20  rgb
+ * Simplified code to use existing macro TDB_XFORM_NAME().
+ *
+ * Revision 1.43  2000/01/21 06:14:04  rgb
+ * Print individual stats only if non-zero.
+ * Removed 'bits' from each keylength for brevity.
+ * Shortened lifetimes legend for brevity.
+ * Changed wording from 'last_used' to the clearer 'idle'.
+ *
+ * Revision 1.42  1999/12/31 14:57:19  rgb
+ * MB fix for new dummy-less proc_get_info in 2.3.35.
+ *
+ * Revision 1.41  1999/11/23 23:04:03  rgb
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.40  1999/11/18 18:47:01  rgb
+ * Added dynamic proc registration for 2.3.25+.
+ * Changed all device registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ * Changed all protocol registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ *
+ * Revision 1.39  1999/11/18 04:12:07  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added Marc Boucher's 2.3.25 proc patches.
+ * Converted all PROC_FS entries to dynamic to reduce kernel patching.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ *
+ * Revision 1.38  1999/11/17 15:53:38  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.37  1999/10/16 04:23:06  rgb
+ * Add stats for replaywin_errs, replaywin_max_sequence_difference,
+ * authentication errors, encryption size errors, encryption padding
+ * errors, and time since last packet.
+ *
+ * Revision 1.36  1999/10/16 00:30:47  rgb
+ * Added SA lifetime counting.
+ *
+ * Revision 1.35  1999/10/15 22:14:00  rgb
+ * Clean out cruft.
+ *
+ * Revision 1.34  1999/10/03 18:46:28  rgb
+ * Spinlock fixes for 2.0.xx and 2.3.xx.
+ *
+ * Revision 1.33  1999/10/01 17:08:10  rgb
+ * Disable spinlock init.
+ *
+ * Revision 1.32  1999/10/01 16:22:24  rgb
+ * Switch from assignment init. to functional init. of spinlocks.
+ *
+ * Revision 1.31  1999/10/01 15:44:52  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.30  1999/10/01 00:00:16  rgb
+ * Added eroute structure locking.
+ * Added tdb structure locking.
+ * Minor formatting changes.
+ * Add call to initialize tdb hash table.
+ *
+ * Revision 1.29  1999/09/23 20:22:40  rgb
+ * Enable, tidy and fix network notifier code.
+ *
+ * Revision 1.28  1999/09/18 11:39:56  rgb
+ * Start to add (disabled) netdevice notifier code.
+ *
+ * Revision 1.27  1999/08/28 08:24:47  rgb
+ * Add compiler directives to compile cleanly without debugging.
+ *
+ * Revision 1.26  1999/08/06 16:03:22  rgb
+ * Correct error messages on failure to unload /proc entries.
+ *
+ * Revision 1.25  1999/08/03 17:07:25  rgb
+ * Report device MTU, not private MTU.
+ *
+ * Revision 1.24  1999/05/25 22:24:37  rgb
+ * /PROC/NET/ipsec* init problem fix.
+ *
+ * Revision 1.23  1999/05/25 02:16:38  rgb
+ * Make modular proc_fs entries dynamic and fix for 2.2.x.
+ *
+ * Revision 1.22  1999/05/09 03:25:35  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.21  1999/05/05 22:02:30  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.20  1999/04/29 15:15:50  rgb
+ * Fix undetected iv_len reporting bug.
+ * Add sanity checking for null pointer to private data space.
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.19  1999/04/27 19:24:44  rgb
+ * Added /proc/net/ipsec_klipsdebug support for reading the current debug
+ * settings.
+ * Instrument module load/init/unload.
+ *
+ * Revision 1.18  1999/04/15 15:37:24  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.15.2.3  1999/04/13 20:29:19  rgb
+ * /proc/net/ipsec_* cleanup.
+ *
+ * Revision 1.15.2.2  1999/04/02 04:28:23  rgb
+ * /proc/net/ipsec_* formatting enhancements.
+ *
+ * Revision 1.15.2.1  1999/03/30 17:08:33  rgb
+ * Add pfkey initialisation.
+ *
+ * Revision 1.17  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.16  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.15  1999/02/24 20:15:07  rgb
+ * Update output format.
+ *
+ * Revision 1.14  1999/02/17 16:49:39  rgb
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Ditch NET_IPIP dependancy.
+ *
+ * Revision 1.13  1999/01/26 02:06:37  rgb
+ * Remove ah/esp switching on include files.
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ * Remove references to INET_GET_PROTOCOL.
+ *
+ * Revision 1.12  1999/01/22 06:19:18  rgb
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ * Added algorithm switch code.
+ *
+ * Revision 1.11  1998/12/01 05:54:53  rgb
+ * Cleanup and order debug version output.
+ *
+ * Revision 1.10  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.9  1998/11/10 05:35:13  rgb
+ * Print direction in/out flag from /proc/net/ipsec_spi.
+ *
+ * Revision 1.8  1998/10/27 13:48:10  rgb
+ * Cleaned up /proc/net/ipsec_* filesystem for easy parsing by scripts.
+ * Fixed less(1) truncated output bug.
+ * Code clean-up.
+ *
+ * Revision 1.7  1998/10/22 06:43:16  rgb
+ * Convert to use satoa for printk.
+ *
+ * Revision 1.6  1998/10/19 14:24:35  rgb
+ * Added inclusion of freeswan.h.
+ *
+ * Revision 1.5  1998/10/09 04:43:35  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.4  1998/07/27 21:50:22  rgb
+ * Not necessary to traverse mask tree for /proc/net/ipsec_eroute.
+ *
+ * Revision 1.3  1998/06/25 19:51:20  rgb
+ * Clean up #endif comments.
+ * Shift debugging comment control for procfs to debug_tunnel.
+ * Make proc_dir_entries visible to rest of kernel for static link.
+ * Replace hardwired fileperms with macros.
+ * Use macros for procfs inode numbers.
+ * Rearrange initialisations between ipsec_init and module_init as appropriate
+ * for static loading.
+ *
+ * Revision 1.2  1998/06/23 02:55:43  rgb
+ * Slightly quieted init-time messages.
+ * Re-introduced inet_add_protocol after it mysteriously disappeared...
+ * Check for and warn of absence of IPIP protocol on install of module.
+ * Move tdbcleanup to ipsec_xform.c.
+ *
+ * Revision 1.10  1998/06/18 21:29:04  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid kernel
+ * build scripts happier in presence of symbolic links
+ *
+ * Revision 1.9  1998/06/14 23:49:40  rgb
+ * Clarify version reporting on module loading.
+ *
+ * Revision 1.8  1998/06/11 05:54:23  rgb
+ * Added /proc/net/ipsec_version to report freeswan and transform versions.
+ * Added /proc/net/ipsec_spinew to generate new and unique spi's..
+ * Fixed /proc/net/ipsec_tncfg bug.
+ *
+ * Revision 1.7  1998/05/25 20:23:13  rgb
+ * proc_register changed to dynamic registration to avoid arbitrary inode
+ * numbers.
+ *
+ * Implement memory recovery from tdb and eroute tables.
+ *
+ * Revision 1.6  1998/05/21 13:08:58  rgb
+ * Rewrote procinfo subroutines to avoid *bad things* when more that 3k of
+ * information is available for printout.
+ *
+ * Revision 1.5  1998/05/18 21:29:48  rgb
+ * Cleaned up /proc/net/ipsec_* output, including a title line, algorithm
+ * names instead of numbers, standard format for numerical output base,
+ * whitespace for legibility, and the names themselves for consistency.
+ *
+ * Added /proc/net/ipsec_spigrp and /proc/net/ipsec_tncfg.
+ *
+ * Revision 1.4  1998/04/30 15:42:24  rgb
+ * Silencing attach for normal operations with #ifdef IPSEC_DEBUG.
+ *
+ * Revision 1.3  1998/04/21 21:28:58  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:22  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:05  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Fixed problem with node names of /proc/net entries.
+ * Other minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_ipe4.h linux/net/ipsec/ipsec_ipe4.h
--- linux-noipsec/net/ipsec/ipsec_ipe4.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_ipe4.h        Sun Apr 11 02:28:57 1999
@@ -0,0 +1,59 @@
+/*
+ * IP-in-IP Header declarations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/* The packet header is an IP header! */
+
+struct ipe4_xdata                      /* transform table data */
+{
+       struct in_addr  i4_src;
+       struct in_addr  i4_dst;
+};
+
+#define EMT_IPE4_ULEN  8       /* coming from user mode */
+ 
+
+/*
+ * $Log$
+ * Revision 1.3  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.2  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.1  1998/06/18 21:27:47  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.1  1998/04/09 03:06:07  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_md5c.c linux/net/ipsec/ipsec_md5c.c
--- linux-noipsec/net/ipsec/ipsec_md5c.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_md5c.c        Mon Dec 13 14:59:12 1999
@@ -0,0 +1,430 @@
+/*
+ * RCSID $Id$
+ */
+
+/*
+ * The rest of the code is derived from MD5C.C by RSADSI. Minor cosmetic
+ * changes to accomodate it in the kernel by ji.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/string.h>
+
+#include "ipsec_md5h.h"
+
+/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+ */
+
+/*
+ * Additions by JI
+ * 
+ * HAVEMEMCOPY is defined if mem* routines are available
+ *
+ * HAVEHTON is defined if htons() and htonl() can be used
+ * for big/little endian conversions
+ *
+ */
+
+#define HAVEMEMCOPY
+#ifdef __LITTLE_ENDIAN
+#define LITTLENDIAN
+#endif
+#ifdef __BIG_ENDIAN
+#define BIGENDIAN
+#endif
+
+/* Constants for MD5Transform routine.
+ */
+
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
+
+#ifdef LITTLEENDIAN
+#define Encode MD5_memcpy
+#define Decode MD5_memcpy
+#else
+static void Encode PROTO_LIST
+  ((unsigned char *, UINT4 *, unsigned int));
+static void Decode PROTO_LIST
+  ((UINT4 *, unsigned char *, unsigned int));
+#endif
+
+#ifdef HAVEMEMCOPY
+/* no need to include <memory.h> here; <linux/string.h> defines these */
+#define MD5_memcpy     memcpy
+#define MD5_memset     memset
+#else
+#ifdef HAVEBCOPY
+#define MD5_memcpy(_a,_b,_c) bcopy((_b),(_a),(_c))
+#define MD5_memset(_a,_b,_c) bzero((_a),(_c))
+#else
+static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
+static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
+#endif
+#endif
+static unsigned char PADDING[64] = {
+  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* F, G, H and I are basic MD5 functions.
+ */
+#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+/* ROTATE_LEFT rotates x left n bits.
+ */
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
+Rotation is separate from addition to prevent recomputation.
+ */
+#define FF(a, b, c, d, x, s, ac) { \
+ (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define GG(a, b, c, d, x, s, ac) { \
+ (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define HH(a, b, c, d, x, s, ac) { \
+ (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define II(a, b, c, d, x, s, ac) { \
+ (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+
+/* MD5 initialization. Begins an MD5 operation, writing a new context.
+ */
+void MD5Init (context)
+MD5_CTX *context;                                        /* context */
+{
+  context->count[0] = context->count[1] = 0;
+  /* Load magic initialization constants.
+*/
+  context->state[0] = 0x67452301;
+  context->state[1] = 0xefcdab89;
+  context->state[2] = 0x98badcfe;
+  context->state[3] = 0x10325476;
+}
+
+/* MD5 block update operation. Continues an MD5 message-digest
+  operation, processing another message block, and updating the
+  context.
+ */
+void MD5Update (context, input, inputLen)
+MD5_CTX *context;                                        /* context */
+unsigned char *input;                                /* input block */
+__u32 inputLen;                     /* length of input block */
+{
+  __u32 i;
+  unsigned int index, partLen;
+
+  /* Compute number of bytes mod 64 */
+  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
+
+  /* Update number of bits */
+  if ((context->count[0] += ((UINT4)inputLen << 3))
+   < ((UINT4)inputLen << 3))
+ context->count[1]++;
+  context->count[1] += ((UINT4)inputLen >> 29);
+
+  partLen = 64 - index;
+
+  /* Transform as many times as possible.
+*/
+  if (inputLen >= partLen) {
+ MD5_memcpy
+   ((POINTER)&context->buffer[index], (POINTER)input, partLen);
+ MD5Transform (context->state, context->buffer);
+
+ for (i = partLen; i + 63 < inputLen; i += 64)
+   MD5Transform (context->state, &input[i]);
+
+ index = 0;
+  }
+  else
+ i = 0;
+
+  /* Buffer remaining input */
+  MD5_memcpy
+ ((POINTER)&context->buffer[index], (POINTER)&input[i],
+  inputLen-i);
+}
+
+/* MD5 finalization. Ends an MD5 message-digest operation, writing the
+  the message digest and zeroizing the context.
+ */
+void MD5Final (digest, context)
+unsigned char digest[16];                         /* message digest */
+MD5_CTX *context;                                       /* context */
+{
+  unsigned char bits[8];
+  unsigned int index, padLen;
+
+  /* Save number of bits */
+  Encode (bits, context->count, 8);
+
+  /* Pad out to 56 mod 64.
+*/
+  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
+  padLen = (index < 56) ? (56 - index) : (120 - index);
+  MD5Update (context, PADDING, padLen);
+
+  /* Append length (before padding) */
+  MD5Update (context, bits, 8);
+
+  if (digest != NULL)                  /* Bill Simpson's padding */
+  {
+         /* store state in digest */
+         Encode (digest, context->state, 16);
+
+         /* Zeroize sensitive information.
+          */
+         MD5_memset ((POINTER)context, 0, sizeof (*context));
+  }
+}
+
+/* MD5 basic transformation. Transforms state based on block.
+ */
+static void MD5Transform (state, block)
+UINT4 state[4];
+unsigned char block[64];
+{
+  UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+
+  Decode (x, block, 64);
+
+  /* Round 1 */
+  FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
+  FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
+  FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
+  FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
+  FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
+  FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
+  FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
+  FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
+  FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
+  FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
+  FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
+  FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
+  FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
+  FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
+  FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
+  FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
+
+ /* Round 2 */
+  GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
+  GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
+  GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
+  GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
+  GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
+  GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
+  GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
+  GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
+  GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
+  GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
+  GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
+  GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
+  GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
+  GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
+  GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
+  GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
+
+  /* Round 3 */
+  HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
+  HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
+  HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
+  HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
+  HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
+  HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
+  HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
+  HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
+  HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
+  HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
+  HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
+  HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
+  HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
+  HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
+  HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
+  HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
+
+  /* Round 4 */
+  II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
+  II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
+  II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
+  II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
+  II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
+  II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
+  II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
+  II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
+  II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
+  II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
+  II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
+  II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
+  II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
+  II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
+  II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
+  II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
+
+  state[0] += a;
+  state[1] += b;
+  state[2] += c;
+  state[3] += d;
+
+  /* Zeroize sensitive information.
+*/
+  MD5_memset ((POINTER)x, 0, sizeof (x));
+}
+
+#ifndef LITTLEENDIAN
+
+/* Encodes input (UINT4) into output (unsigned char). Assumes len is
+  a multiple of 4.
+ */
+static void Encode (output, input, len)
+unsigned char *output;
+UINT4 *input;
+unsigned int len;
+{
+  unsigned int i, j;
+
+  for (i = 0, j = 0; j < len; i++, j += 4) {
+ output[j] = (unsigned char)(input[i] & 0xff);
+ output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
+ output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
+ output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
+  }
+}
+
+/* Decodes input (unsigned char) into output (UINT4). Assumes len is
+  a multiple of 4.
+ */
+static void Decode (output, input, len)
+UINT4 *output;
+unsigned char *input;
+unsigned int len;
+{
+  unsigned int i, j;
+
+  for (i = 0, j = 0; j < len; i++, j += 4)
+ output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
+   (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
+}
+
+#endif
+
+#ifndef HAVEMEMCOPY
+#ifndef HAVEBCOPY
+/* Note: Replace "for loop" with standard memcpy if possible.
+ */
+
+static void MD5_memcpy (output, input, len)
+POINTER output;
+POINTER input;
+unsigned int len;
+{
+  unsigned int i;
+
+  for (i = 0; i < len; i++)
+
+ output[i] = input[i];
+}
+
+/* Note: Replace "for loop" with standard memset if possible.
+ */
+
+static void MD5_memset (output, value, len)
+POINTER output;
+int value;
+unsigned int len;
+{
+  unsigned int i;
+
+  for (i = 0; i < len; i++)
+ ((char *)output)[i] = (char)value;
+}
+#endif
+#endif
+
+/*
+ * $Log$
+ * Revision 1.4  1999/12/13 13:59:12  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.3  1999/05/21 18:09:28  henry
+ * unnecessary <memory.h> include causes trouble in 2.2
+ *
+ * Revision 1.2  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.1  1998/06/18 21:27:48  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:02  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:06:08  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_md5h.h linux/net/ipsec/ipsec_md5h.h
--- linux-noipsec/net/ipsec/ipsec_md5h.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_md5h.h        Mon Dec 13 14:59:13 1999
@@ -0,0 +1,129 @@
+/*
+ * RCSID $Id$
+ */
+
+/*
+ * The rest of this file is Copyright RSA DSI. See the following comments
+ * for the full Copyright notice.
+ */
+
+#ifndef _IPSEC_MD5H_H_
+#define _IPSEC_MD5H_H_
+
+/* GLOBAL.H - RSAREF types and constants
+ */
+
+/* PROTOTYPES should be set to one if and only if the compiler supports
+     function argument prototyping.
+   The following makes PROTOTYPES default to 0 if it has not already
+     been defined with C compiler flags.
+ */
+#ifndef PROTOTYPES
+#define PROTOTYPES 1
+#endif /* !PROTOTYPES */
+
+/* POINTER defines a generic pointer type */
+typedef __u8 *POINTER;
+
+/* UINT2 defines a two byte word */
+typedef __u16 UINT2;
+
+/* UINT4 defines a four byte word */
+typedef __u32 UINT4;
+
+/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
+   If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
+     returns an empty list.
+ */
+
+#if PROTOTYPES
+#define PROTO_LIST(list) list
+#else /* PROTOTYPES */
+#define PROTO_LIST(list) ()
+#endif /* PROTOTYPES */
+
+
+/* MD5.H - header file for MD5C.C
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+ */
+
+/* MD5 context. */
+typedef struct {
+  UINT4 state[4];                                   /* state (ABCD) */
+  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
+  unsigned char buffer[64];                         /* input buffer */
+} MD5_CTX;
+
+void MD5Init PROTO_LIST ((MD5_CTX *));
+void MD5Update PROTO_LIST
+  ((MD5_CTX *, unsigned char *, __u32));
+void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));
+ 
+#endif /* _IPSEC_MD5H_H_ */
+
+/*
+ * $Log$
+ * Revision 1.6  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.5  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.4  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.3  1999/01/22 06:19:58  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.2  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.1  1998/06/18 21:27:48  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:03  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:04:21  henry
+ * sources moved up from linux/net/ipsec
+ * these two include files modified not to include others except in kernel
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_netlink.c linux/net/ipsec/ipsec_netlink.c
--- linux-noipsec/net/ipsec/ipsec_netlink.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_netlink.c     Mon Nov  6 05:32:08 2000
@@ -0,0 +1,635 @@
+/*
+ * IPSEC <> netlink interface
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_netlink_c_version[] = "RCSID $Id$";
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef SPINLOCK
+ #ifdef SPINLOCK_23
+  #include <linux/spinlock.h> /* *lock* */
+ #else /* 23_SPINLOCK */
+  #include <asm/spinlock.h> /* *lock* */
+ #endif /* 23_SPINLOCK */
+#endif /* SPINLOCK */
+#ifdef NET_21
+ #include <asm/uaccess.h>
+ #include <linux/in6.h>
+ #define ip_chk_addr inet_addr_type
+ #define IS_MYADDR RTN_LOCAL
+#endif
+#include <asm/checksum.h>
+#include <net/ip.h>
+#ifdef NETLINK_SOCK
+ #include <linux/netlink.h>
+#else
+ #include <net/netlink.h>
+#endif
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+
+#include "ipsec_rcv.h"
+#include "ipsec_ah.h"
+#include "ipsec_esp.h"
+
+#ifdef CONFIG_IPSEC_DEBUG
+ #include "ipsec_tunnel.h"
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef CONFIG_IPSEC_DEBUG
+ int debug_netlink = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#define SENDERR(_x) do { len = -(_x); goto errlab; } while (0)
+
+#if 0
+int 
+#ifdef NETLINK_SOCK
+ipsec_callback(int proto, struct sk_buff *skb)
+#else /* NETLINK_SOCK */
+ipsec_callback(struct sk_buff *skb)
+#endif /* NETLINK_SOCK */
+{
+       /*
+        * this happens when we write to /dev/ipsec (c 36 10)
+        */
+       int len = skb->len;
+       u_char *dat = (u_char *)skb->data;
+       struct encap_msghdr *em = (struct encap_msghdr *)dat;
+       struct tdb *tdbp, *tprev;
+       int i, nspis, error = 0;
+#ifdef CONFIG_IPSEC_DEBUG
+       struct eroute *eret;
+       char sa[SATOA_BUF];
+
+
+       satoa(em->em_said, 0, sa, SATOA_BUF);
+
+       if(debug_netlink) {
+               printk("klips_debug:ipsec_callback: skb=0x%p skblen=%ld em_magic=%d em_type=%d\n",
+                      skb, (unsigned long int)skb->len, em->em_magic, em->em_type);
+               switch(em->em_type) {
+               case EMT_SETDEBUG:
+                       printk("klips_debug:ipsec_callback: set ipsec_debug level\n");
+                       break;
+               case EMT_DELEROUTE:
+               case EMT_CLREROUTE:
+               case EMT_CLRSPIS:
+                       break;
+               default:
+                       printk("klips_debug:ipsec_callback: called for SA:%s\n", sa);
+               }
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       /* XXXX Temporarily disable netlink I/F code until it gets permanantly
+          ripped out in favour of PF_KEYv2 I/F. */
+       SENDERR(EPROTONOSUPPORT);
+
+       /*      em = (struct encap_msghdr *)dat; */
+       if (em->em_magic != EM_MAGIC) {
+               printk("klips_debug:ipsec_callback: bad magic=%d failed, should be %d\n",
+                      em->em_magic,
+                      EM_MAGIC);
+               SENDERR(EINVAL);
+       }
+       switch (em->em_type) {
+       case EMT_SETDEBUG:
+#ifdef CONFIG_IPSEC_DEBUG
+               if(em->em_db_nl >> (sizeof(em->em_db_nl) * 8 - 1)) {
+                       em->em_db_nl &= ~(1 << (sizeof(em->em_db_nl) * 8 -1));
+                       debug_tunnel  |= em->em_db_tn;
+                       debug_netlink |= em->em_db_nl;
+                       debug_xform   |= em->em_db_xf;
+                       debug_eroute  |= em->em_db_er;
+                       debug_spi     |= em->em_db_sp;
+                       debug_radij   |= em->em_db_rj;
+                       debug_esp     |= em->em_db_es;
+                       debug_ah      |= em->em_db_ah;
+                       debug_rcv     |= em->em_db_rx;
+                       debug_pfkey   |= em->em_db_ky;
+                       if(debug_netlink)
+                               printk("klips_debug:ipsec_callback: set\n");
+               } else {
+                       if(debug_netlink)
+                               printk("klips_debug:ipsec_callback: unset\n");
+                       debug_tunnel  &= em->em_db_tn;
+                       debug_netlink &= em->em_db_nl;
+                       debug_xform   &= em->em_db_xf;
+                       debug_eroute  &= em->em_db_er;
+                       debug_spi     &= em->em_db_sp;
+                       debug_radij   &= em->em_db_rj;
+                       debug_esp     &= em->em_db_es;
+                       debug_ah      &= em->em_db_ah;
+                       debug_rcv     &= em->em_db_rx;
+                       debug_pfkey   &= em->em_db_ky;
+               }
+#else /* CONFIG_IPSEC_DEBUG */
+               printk("klips_debug:ipsec_callback: debugging not enabled\n");
+               SENDERR(EINVAL);
+#endif /* CONFIG_IPSEC_DEBUG */
+               break;
+
+       case EMT_SETEROUTE:
+               if ((error = ipsec_makeroute(&(em->em_eaddr), &(em->em_emask), em->em_ersaid)))
+                       SENDERR(-error);
+               break;
+
+       case EMT_RPLACEROUTE:
+               if ((error = ipsec_breakroute(&(em->em_eaddr), &(em->em_emask))) == EINVAL) {
+                               SENDERR(-error);
+               }
+               if ((error = ipsec_makeroute(&(em->em_eaddr), &(em->em_emask), em->em_ersaid)))
+                       SENDERR(-error);
+               break;
+
+       case EMT_DELEROUTE:
+               if ((error = ipsec_breakroute(&(em->em_eaddr), &(em->em_emask))))
+                       SENDERR(-error);
+               break;
+
+       case EMT_CLREROUTE:
+               if ((error = ipsec_cleareroutes()))
+                       SENDERR(-error);
+               break;
+
+       case EMT_SETSPI:
+               if (em->em_if >= 5)     /* XXX -- why 5? */
+                       SENDERR(ENODEV);
+               
+               tdbp = gettdb(&(em->em_said));
+               if (tdbp == NULL) {
+                       tdbp = (struct tdb *)kmalloc(sizeof (*tdbp), GFP_ATOMIC);
+
+                       if (tdbp == NULL)
+                               SENDERR(ENOBUFS);
+                       
+                       memset((caddr_t)tdbp, 0, sizeof(*tdbp));
+                       
+                       tdbp->tdb_said = em->em_said;
+                       tdbp->tdb_flags = em->em_flags;
+                       
+                       if(ip_chk_addr((unsigned long)em->em_said.dst.s_addr) == IS_MYADDR) {
+                               tdbp->tdb_flags |= EMT_INBOUND;
+                       }
+                       KLIPS_PRINT(debug_netlink & DB_NL_TDBCB,
+                                   "klips_debug:ipsec_callback: existing Tunnel Descriptor Block not found (this\n"
+                                   "klips_debug:                is good) for SA: %s, %s-bound, allocating.\n",
+                                   sa, (tdbp->tdb_flags & EMT_INBOUND) ? "in" : "out");
+
+/* XXX                 tdbp->tdb_rcvif = &(enc_softc[em->em_if].enc_if);*/
+                       tdbp->tdb_rcvif = NULL;
+               } else {
+                       KLIPS_PRINT(debug_netlink & DB_NL_TDBCB,
+                                   "klips_debug:ipsec_callback: EMT_SETSPI found an old Tunnel Descriptor Block\n"
+                                   "klips_debug:                for SA: %s, delete it first.\n", sa);
+                       SENDERR(EEXIST);
+               }
+               
+               if ((error = tdb_init(tdbp, em))) {
+                       KLIPS_PRINT(debug_netlink & DB_NL_TDBCB,
+                                   "klips_debug:ipsec_callback: EMT_SETSPI not successful for SA: %s, deleting.\n", sa);
+                       ipsec_tdbwipe(tdbp);
+                       
+                       SENDERR(-error);
+               }
+
+               tdbp->tdb_lifetime_addtime_c = jiffies/HZ;
+               tdbp->tdb_state = 1;
+               if(!tdbp->tdb_lifetime_allocations_c) {
+                       tdbp->tdb_lifetime_allocations_c += 1;
+               }
+
+               puttdb(tdbp);
+               KLIPS_PRINT(debug_netlink & DB_NL_TDBCB,
+                           "klips_debug:ipsec_callback: EMT_SETSPI successful for SA: %s\n", sa);
+               break;
+               
+       case EMT_DELSPI:
+               if (em->em_if >= 5)     /* XXX -- why 5? */
+                       SENDERR(ENODEV);
+               
+               spin_lock_bh(&tdb_lock);
+               
+               tdbp = gettdb(&(em->em_said));
+               if (tdbp == NULL) {
+                       KLIPS_PRINT(debug_netlink & DB_NL_TDBCB,
+                                   "klips_debug:ipsec_callback: "
+                                   "EMT_DELSPI Tunnel Descriptor Block not found for SA:\n"
+                                   "klips_debug:                %s, could not delete.\n", sa);
+                       spin_unlock_bh(&tdb_lock);
+                       SENDERR(ENXIO);  /* XXX -- wrong error message... */
+               } else {
+                       if((error = deltdbchain(tdbp))) {
+                               spin_unlock_bh(&tdb_lock);
+                               SENDERR(-error);
+                       }
+               }
+               spin_unlock_bh(&tdb_lock);
+
+               break;
+               
+       case EMT_GRPSPIS:
+               nspis = (len - EMT_GRPSPIS_FLEN) / sizeof(em->em_rel[0]);
+               if ((nspis * (sizeof(em->em_rel[0]))) != (len - EMT_GRPSPIS_FLEN)) {
+                       printk("klips_debug:ipsec_callback: EMT_GRPSPI message size incorrect, expected nspis(%d)*%d, got %d.\n",
+                              nspis,
+                              sizeof(em->em_rel[0]),
+                              (len - EMT_GRPSPIS_FLEN));
+                       SENDERR(EINVAL);
+                       break;
+               }
+               
+               spin_lock_bh(&tdb_lock);
+
+               for (i = 0; i < nspis; i++) {
+                       KLIPS_PRINT(debug_netlink,
+                                   "klips_debug:ipsec_callback: EMT_GRPSPI for SA(%d)\n"
+                                   "klips_debug:                %s,\n", i, sa);
+                       if ((tdbp = gettdb(&(em->em_rel[i].emr_said))) == NULL) {
+                               KLIPS_PRINT(debug_netlink,
+                                           "klips_debug:ipsec_callback: "
+                                           "EMT_GRPSPI Tunnel Descriptor Block not found for SA:\n"
+                                           "klips_debug:                %s, could not group.\n", sa);
+                               spin_unlock_bh(&tdb_lock);
+                               SENDERR(ENXIO);
+                       } else {
+                               if(tdbp->tdb_inext || tdbp->tdb_onext) {
+                                       KLIPS_PRINT(debug_netlink,
+                                                   "klips_debug:ipsec_callback: "
+                                                   "EMT_GRPSPI Tunnel Descriptor Block already grouped\n"
+                                                   "klips_debug:                for SA: %s, can't regroup.\n", sa);
+                                       spin_unlock_bh(&tdb_lock);
+                                       SENDERR(EBUSY);
+                               }
+                               em->em_rel[i].emr_tdb = tdbp;
+                       }
+               }
+               tprev = em->em_rel[0].emr_tdb;
+               tprev->tdb_inext = NULL;
+               for (i = 1; i < nspis; i++) {
+                       tdbp = em->em_rel[i].emr_tdb;
+                       tprev->tdb_onext = tdbp;
+                       tdbp->tdb_inext = tprev;
+                       tprev = tdbp;
+               }
+               tprev->tdb_onext = NULL;
+
+               spin_unlock_bh(&tdb_lock);
+
+               error = 0;
+               break;
+               
+       case EMT_UNGRPSPIS:
+               if (len != (8 + (sizeof(struct sa_id) + sizeof(struct tdb *)) /* 12 */) ) {
+                       printk("klips_debug:ipsec_callback: "
+                              "EMT_UNGRPSPIS message size incorrect, expected %d, got %d.\n",
+                              8 + (sizeof(struct sa_id) + sizeof(struct tdb *)),
+                                   len);
+                       SENDERR(EINVAL);
+                       break;
+               }
+               
+               spin_lock_bh(&tdb_lock);
+
+               if ((tdbp = gettdb(&(em->em_rel[0].emr_said))) == NULL) {
+                       KLIPS_PRINT(debug_netlink,
+                                   "klips_debug:ipsec_callback: "
+                                   "EMT_UGRPSPI Tunnel Descriptor Block not found for SA:\n"
+                                   "klips_debug:                %s, could not ungroup.\n", sa);
+                       spin_unlock_bh(&tdb_lock);
+                       SENDERR(ENXIO);
+               }
+               while(tdbp->tdb_onext) {
+                       tdbp = tdbp->tdb_onext;
+               }
+               while(tdbp->tdb_inext) {
+                       tprev = tdbp;
+                       tdbp = tdbp->tdb_inext;
+                       tprev->tdb_inext = NULL;
+                       tdbp->tdb_onext = NULL;
+               }
+
+               spin_unlock_bh(&tdb_lock);
+
+               break;
+               
+       case EMT_CLRSPIS:
+               KLIPS_PRINT(debug_netlink,
+                           "klips_debug:ipsec_callback: spi clear called.\n");
+               if (em->em_if >= 5)     /* XXX -- why 5? */
+                       SENDERR(ENODEV);
+               ipsec_tdbcleanup(0);
+               break;
+       default:
+               KLIPS_PRINT(debug_netlink,
+                           "klips_debug:ipsec_callback: unknown message type\n");
+               SENDERR(EINVAL);
+       }
+ errlab:
+#ifdef NET_21
+       kfree_skb(skb);
+#else /* NET_21 */
+       kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+       return len;
+}
+#endif
+
+/*
+ * $Log$
+ * Revision 1.47  2000/11/06 04:32:08  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ *
+ * Revision 1.46  2000/09/08 19:16:50  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.45  2000/08/30 05:23:55  rgb
+ * Compiler-define out ipsec_callback() function of ipsec_netlink.c.
+ * Nothing should be using it anyways.
+ *
+ * Revision 1.44  2000/03/16 14:01:26  rgb
+ * Indented headers for readability.
+ *
+ * Revision 1.43  2000/03/16 07:13:04  rgb
+ * Hardcode PF_KEYv2 support.
+ * Disable NET_LINK support.
+ *
+ * Revision 1.42  2000/01/21 06:14:27  rgb
+ * Moved debug message for expected output on set or clear.
+ *
+ * Revision 1.41  1999/12/01 22:14:37  rgb
+ * Added debugging message for bad netlink magic.
+ * Initialise tdb_sastate to MATURE (1).
+ * Added UNGRPSPIS bad length debugging message.
+ *
+ * Revision 1.40  1999/11/23 23:06:25  rgb
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.39  1999/11/18 04:09:18  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.38  1999/11/17 15:53:39  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.37  1999/10/26 13:58:32  rgb
+ * Put spinlock flags variable declaration outside the debug compiler
+ * directive to enable compilation with debug shut off.
+ *
+ * Revision 1.36  1999/10/16 18:24:22  rgb
+ * Initialize lifetime_addtime_c and lifetime_allocations_c.
+ * Clean-up unused cruft.
+ *
+ * Revision 1.35  1999/10/08 18:37:34  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.34  1999/10/03 18:49:11  rgb
+ * Spinlock fixes for 2.0.xx and 2.3.xx.
+ *
+ * Revision 1.33  1999/10/01 15:44:53  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.32  1999/10/01 00:00:53  rgb
+ * Fix for proper netlink debugging operation.
+ * Added tdb structure locking.
+ * Minor formatting changes.
+ *
+ * Revision 1.31  1999/05/25 21:21:43  rgb
+ * Fix deltdbchain() error return code checking.
+ *
+ * Revision 1.30  1999/05/09 03:25:36  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.29  1999/05/08 21:23:27  rgb
+ * Simplify satoa() calling.
+ * Fix error return reporting.
+ * Add casting to silence the 2.2.x compile.
+ *
+ * Revision 1.28  1999/05/05 22:02:31  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.27  1999/04/29 15:16:24  rgb
+ * Add pfkey support to debugging.
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate
+ * parameter sanity checking.
+ * Add IS_MYADDR support obviating the necessity of doing this in user
+ * space.
+ * Fix undetected bug by moving puttdb in SETSPI until after initialisation
+ * to
+ * prevent tdb usage before it is ready and to save work if it does not
+ * initialise.
+ * Clean up deltdb/wipe code.
+ * Fix undetected bug of returning error as positive value.
+ * Add a parameter to tdbcleanup to be able to delete a class of SAs.
+ *
+ * Revision 1.26  1999/04/16 15:39:35  rgb
+ * Fix already fixed unbalanced #endif.
+ *
+ * Revision 1.25  1999/04/15 15:37:24  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.21.2.1  1999/04/13 20:30:26  rgb
+ * Add experimental 'getdebug'.
+ *
+ * Revision 1.24  1999/04/11 00:28:58  henry
+ * GPL boilerplate
+ *
+ * Revision 1.23  1999/04/07 17:44:21  rgb
+ * Fix ipsec_callback memory leak, skb not freed after use.
+ *
+ * Revision 1.22  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.21  1999/02/17 16:50:11  rgb
+ * Consolidate satoa()s for space and speed efficiency.
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Clean out unused cruft.
+ *
+ * Revision 1.20  1999/01/28 23:20:49  rgb
+ * Replace hard-coded numbers in macros and code with meaningful values
+ * automatically generated from sizeof() and offsetof() to further the
+ * goal of platform independance.
+ *
+ * Revision 1.19  1999/01/26 02:07:07  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Remove ah/esp switching on include files.
+ * Removed dead code.
+ *
+ * Revision 1.18  1999/01/22 06:20:36  rgb
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ * Added algorithm switch code.
+ *
+ * Revision 1.17  1998/12/02 03:09:39  rgb
+ * Clean up debug printing conditionals to compile with debugging off.
+ *
+ * Revision 1.16  1998/12/01 05:56:57  rgb
+ * Add support for debug printing of version info.
+ * Fail on unknown error for breakroute in replace command.
+ *
+ * Revision 1.15  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.14  1998/11/10 05:36:14  rgb
+ * Clean up debug output.
+ * Add direction to spi setup debug code.
+ * Add support for SA direction flag.
+ *
+ * Revision 1.13  1998/10/31 06:51:56  rgb
+ * Get zeroize to return something useful.
+ * Clean up code to isolate 'spi --add/del' memory leak.
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.12  1998/10/27 00:35:02  rgb
+ * Supressed debug output during normal operation.
+ *
+ * Revision 1.11  1998/10/25 02:40:21  rgb
+ * Selective debug printing, depending upon called service.
+ * Institute more precise error return codes from eroute commands.
+ * Fix bug in size of stucture passed in from user space for grpspi command.
+ *
+ * Revision 1.10  1998/10/22 06:44:58  rgb
+ * Convert to use satoa for printk.
+ * Moved break; in 'set debug level code to avoid undetected bug.
+ * Fixed run-on error message to fit 80 columns.
+ *
+ * Revision 1.9  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.8  1998/10/09 04:29:51  rgb
+ * Added support for '-replace' option to eroute.
+ * Fixed spiungroup bug.
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.7  1998/08/12 00:10:06  rgb
+ * Fixed minor error return code syntax.
+ *
+ * Revision 1.6  1998/07/29 20:22:57  rgb
+ * Cosmetic cleanup.
+ *
+ * Revision 1.5  1998/07/27 21:53:11  rgb
+ * Check for proper return code from eroute clear command.
+ * Use appropriate error return codes from kernel.
+ * Add an option to clear the SA table.
+ *
+ * Revision 1.4  1998/07/14 18:02:40  rgb
+ * Add a command to clear the eroute table.
+ * Clean up some error codes.
+ *
+ * Revision 1.3  1998/06/25 19:52:33  rgb
+ * Code cosmetic changes only.
+ *
+ * Revision 1.2  1998/06/23 02:57:58  rgb
+ * Clean up after an error condition in setspi.
+ *
+ * Revision 1.9  1998/06/18 21:29:06  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid kernel
+ * build scripts happier in presence of symbolic links
+ *
+ * Revision 1.8  1998/06/08 17:57:15  rgb
+ * Very minor spacing change.
+ *
+ * Revision 1.7  1998/05/18 21:46:45  rgb
+ * Clean up for numerical consistency of output.
+ *
+ * Added debugging switch output.
+ *
+ * SETSPI will refuse to overwrite a previous SA.  This is to make it
+ * consistent with the eroute command.
+ *
+ * spidel now deletes entire chain of spi's.
+ *
+ * spigrp can now ungroup a set of spi's.
+ *
+ * spigrp will not regroup a previously grouped spi.
+ *
+ * Key data is properly cleaned up, ie. zeroed.
+ *
+ * Revision 1.6  1998/05/07 20:36:27  rgb
+ * Fixed case where debugging not enabled that caused ipsec_netlink.c to
+ * not compile.
+ *
+ * Revision 1.5  1998/05/06 03:34:21  rgb
+ * Updated debugging output statements.
+ *
+ * Revision 1.4  1998/04/23 21:03:59  rgb
+ * Completed kernel development for userspace access to klips kernel debugging
+ * switches.
+ * Added detail to the kernel error message when trying to group non-existant
+ * spi's.
+ *
+ * Revision 1.3  1998/04/21 21:29:06  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:23  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:08  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_netlink.h linux/net/ipsec/ipsec_netlink.h
--- linux-noipsec/net/ipsec/ipsec_netlink.h     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_netlink.h     Tue Oct 10 22:10:18 2000
@@ -0,0 +1,330 @@
+/*
+ * IPSEC <> netlink interface
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include <linux/stddef.h>
+
+#ifndef NETLINK_IPSEC
+#define NETLINK_IPSEC          10      /* IPSEC */ 
+#endif /* !NETLINK_IPSEC */
+
+#define EM_MAXRELSPIS  4               /* at most five chained xforms */
+#define EM_MAGIC       0x5377616e      /* "Swan" */
+
+#define EMT_IFADDR     1       /* set enc if addr */
+#define EMT_SETSPI     2       /* Set SPI properties */
+#define EMT_DELSPI     3       /* Delete an SPI */
+#define EMT_GRPSPIS    4       /* Group SPIs (output order)  */
+#define EMT_SETEROUTE  5       /* set an extended route */
+#define EMT_DELEROUTE  6       /* del an extended route */
+#define EMT_TESTROUTE  7       /* try to find route, print to console */
+#define EMT_SETDEBUG   8       /* set debug level if active */
+#define EMT_UNGRPSPIS  9       /* UnGroup SPIs (output order)  */
+#define EMT_CLREROUTE  10      /* clear the extended route table */
+#define EMT_CLRSPIS    11      /* clear the spi table */
+#define EMT_RPLACEROUTE        12      /* set an extended route */
+#define EMT_GETDEBUG   13      /* get debug level if active */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define DB_NL_TDBCB    0x0001
+#endif /* CONFIG_IPSEC_DEBUG */
+
+/* em_flags constants */
+/* be mindful that this flag conflicts with SADB_SAFLAGS_PFS in pfkeyv2 */
+/* perhaps it should be moved... */
+#define EMT_INBOUND    0x01    /* SA direction, 1=inbound */
+
+struct encap_msghdr
+{
+       __u32   em_magic;               /* EM_MAGIC */
+#if 0
+       __u16   em_msglen;              /* message length */
+#endif
+       __u8    em_msglen;              /* message length */
+       __u8    em_flags;               /* message flags */
+       __u8    em_version;             /* for future expansion */
+       __u8    em_type;                /* message type */
+       union
+       {
+               __u8    C;              /* Free-text */
+               
+               struct 
+               {
+                       struct sa_id Said; /* SA ID */
+                       struct sockaddr_encap Eaddr;
+                       struct sockaddr_encap Emask;
+               } Ert;
+
+               struct
+               {
+                       struct in_addr Ia;
+                       __u8    Ifn;
+                       __u8  xxx[3];   /* makes life a lot easier */
+               } Ifa;
+
+               struct
+               {
+                       struct sa_id Said; /* SA ID */
+                       int If;         /* enc i/f for input */
+                       int Alg;        /* Algorithm to use */
+
+                        /* The following union is a surrogate for
+                         * algorithm-specific data.  To insure
+                         * proper alignment, worst-case fields
+                         * should be included.  It would be even
+                         * better to include the types that will
+                         * actually be used, but they may not be
+                         * defined for each use of this header.
+                         * The actual length is expected to be longer
+                         * than is declared here.  References are normally
+                         * made using the em_dat macro, as if it were a
+                         * field name.
+                         */
+                        union { /* Data */
+                                __u8 Dat[1];
+                                __u64 Datq[1];  /* maximal alignment (?) */
+                        } u;
+               } Xfm;
+               
+               struct
+               {
+                       struct sa_id emr_said; /* SA ID */
+                       struct tdb * emr_tdb; /* used internally! */
+                       
+               } Rel[EM_MAXRELSPIS];
+               
+#ifdef CONFIG_IPSEC_DEBUG
+               struct
+               {
+                       int debug_tunnel;
+                       int debug_netlink;
+                       int debug_xform;
+                       int debug_eroute;
+                       int debug_spi;
+                       int debug_radij;
+                       int debug_esp;
+                       int debug_ah;
+                       int debug_rcv;
+                       int debug_pfkey;
+                       int debug_ipcomp;
+                       int debug_verbose;
+               } Dbg;
+#endif /* CONFIG_IPSEC_DEBUG */
+       } Eu;
+};
+
+#define EM_MINLEN      offsetof(struct encap_msghdr, Eu)
+#define EMT_SETSPI_FLEN        offsetof(struct encap_msghdr, em_dat)
+#define EMT_GRPSPIS_FLEN offsetof(struct encap_msghdr, Eu.Rel)
+#define EMT_SETDEBUG_FLEN (offsetof(struct encap_msghdr, Eu.Dbg + \
+                       sizeof(((struct encap_msghdr*)0)->Eu.Dbg)))
+
+#define em_c   Eu.C
+#define em_eaddr Eu.Ert.Eaddr
+#define em_emask Eu.Ert.Emask
+#define em_ersaid Eu.Ert.Said
+#define em_erdst Eu.Ert.Said.dst
+#define em_erspi Eu.Ert.Said.spi
+#define em_erproto Eu.Ert.Said.proto
+
+#define em_ifa Eu.Ifa.Ia
+#define em_ifn Eu.Ifa.Ifn
+
+#define em_said        Eu.Xfm.Said
+#define em_spi Eu.Xfm.Said.spi
+#define em_dst Eu.Xfm.Said.dst
+#define em_proto       Eu.Xfm.Said.proto
+#define em_if  Eu.Xfm.If
+#define em_alg Eu.Xfm.Alg
+#define em_dat Eu.Xfm.u.Dat
+
+#define em_rel Eu.Rel
+#define emr_dst emr_said.dst
+#define emr_spi emr_said.spi
+#define emr_proto emr_said.proto
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define em_db_tn Eu.Dbg.debug_tunnel
+#define em_db_nl Eu.Dbg.debug_netlink
+#define em_db_xf Eu.Dbg.debug_xform
+#define em_db_er Eu.Dbg.debug_eroute
+#define em_db_sp Eu.Dbg.debug_spi
+#define em_db_rj Eu.Dbg.debug_radij
+#define em_db_es Eu.Dbg.debug_esp
+#define em_db_ah Eu.Dbg.debug_ah
+#define em_db_rx Eu.Dbg.debug_rcv
+#define em_db_ky Eu.Dbg.debug_pfkey
+#define em_db_gz Eu.Dbg.debug_ipcomp
+#define em_db_vb Eu.Dbg.debug_verbose
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef __KERNEL__
+extern char ipsec_netlink_c_version[];
+#ifndef KERNEL_VERSION
+#  include <linux/version.h>
+#endif
+#ifdef NETLINK_SOCK
+extern int ipsec_callback(int proto, struct sk_buff *skb);
+#else /* NETLINK_SOCK */
+extern int ipsec_callback(struct sk_buff *skb);
+#endif /* NETLINK_SOCK */
+extern void ipsec_print_ip(struct iphdr *ip);
+
+#ifdef CONFIG_IPSEC_DEBUG
+       #define KLIPS_PRINT(flag, format, args...) \
+               ((flag) ? printk(KERN_INFO format , ## args) : 0)
+       #define KLIPS_PRINTMORE(flag, format, args...) \
+               ((flag) ? printk(format , ## args) : 0)
+       #define KLIPS_IP_PRINT(flag, ip) \
+               ((flag) ? ipsec_print_ip(ip) : 0)
+#else /* CONFIG_IPSEC_DEBUG */
+       #define KLIPS_PRINT(flag, format, args...) do ; while(0)
+       #define KLIPS_PRINTMORE(flag, format, args...) do ; while(0)
+       #define KLIPS_IP_PRINT(flag, ip) do ; while(0)
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_netlink;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log$
+ * Revision 1.28  2000/10/10 20:10:18  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.27  2000/09/12 03:20:28  rgb
+ * Cleared out now unused pfkeyv2 switch.
+ *
+ * Revision 1.26  2000/09/08 19:16:50  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.25  2000/08/24 16:51:59  rgb
+ * Added KLIPS_PRINTMORE macro to continue lines without KERN_INFO level
+ * info.
+ *
+ * Revision 1.24  2000/08/09 20:43:34  rgb
+ * Fixed bitmask value for SADB_X_SAFLAGS_CLEAREROUTE.
+ *
+ * Revision 1.23  2000/03/16 14:01:48  rgb
+ * Hardwired CONFIG_IPSEC_PFKEYv2 on.
+ *
+ * Revision 1.22  1999/12/08 20:31:32  rgb
+ * Moved IPPROTO_COMP to lib/freeswan.h to simplify userspace includes.
+ *
+ * Revision 1.21  1999/11/18 18:47:41  rgb
+ * Added "#define NETLINK_IPSEC" in case kernel was not compiled with it.
+ *
+ * Revision 1.20  1999/11/18 04:09:18  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.19  1999/08/28 08:27:05  rgb
+ * Add a temporary kludge for 2.0.37-38 to compile even if one patch failed.
+ *
+ * Revision 1.18  1999/08/03 17:09:33  rgb
+ * Tidy up debug output, use KERN_INFO macro in printk's.
+ *
+ * Revision 1.17  1999/05/25 01:45:37  rgb
+ * Fix version macros for 2.0.x as a module.
+ *
+ * Revision 1.16  1999/05/05 22:02:31  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.15  1999/04/29 15:16:55  rgb
+ * Add pfkey support to debugging.
+ *
+ * Revision 1.14  1999/04/15 15:37:24  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.13  1999/04/11 00:28:58  henry
+ * GPL boilerplate
+ *
+ * Revision 1.12  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.11  1999/02/12 21:13:17  rgb
+ * Moved KLIPS_PRINT into a more accessible place.
+ *
+ * Revision 1.10  1999/01/28 23:20:49  rgb
+ * Replace hard-coded numbers in macros and code with meaningful values
+ * automatically generated from sizeof() and offsetof() to further the
+ * goal of platform independance.
+ *
+ * Revision 1.9  1999/01/22 06:21:23  rgb
+ * Added algorithm switch code.
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ *
+ * Revision 1.8  1998/12/01 05:57:42  rgb
+ * Add support for printing debug version info.
+ *
+ * Revision 1.7  1998/11/10 05:37:35  rgb
+ * Add support for SA direction flag.
+ *
+ * Revision 1.6  1998/10/25 02:40:45  rgb
+ * Fix bug in size of stucture passed in from user space for grpspi command.
+ *
+ * Revision 1.5  1998/10/19 14:44:29  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.4  1998/10/09 04:30:11  rgb
+ * Added support for '-replace' option to eroute.
+ *
+ * Revision 1.3  1998/07/27 21:54:22  rgb
+ * Rearrange structures for consistent alignment within a union.
+ * Add an option for clearing SA table.
+ *
+ * Revision 1.2  1998/07/14 18:05:51  rgb
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:27:49  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.4  1998/05/18 21:48:24  rgb
+ * Added switch for ungrouping spi's.
+ *
+ * Revision 1.3  1998/04/23 21:01:50  rgb
+ * Added a macro for userspace access to klips kernel debugging switches.
+ *
+ * Revision 1.2  1998/04/21 21:29:09  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:09  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_radij.c linux/net/ipsec/ipsec_radij.c
--- linux-noipsec/net/ipsec/ipsec_radij.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_radij.c       Mon Nov  6 05:32:08 2000
@@ -0,0 +1,510 @@
+/*
+ * Interface between the IPSEC code and the radix (radij) tree code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* 23_SPINLOCK */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* 23_SPINLOCK */
+#endif /* SPINLOCK */
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#endif
+#include <asm/checksum.h>
+#include <net/ip.h>
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+
+#ifdef CONFIG_IPSEC_DEBUG
+int debug_radij = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+struct radij_node_head *rnh = 0;
+#ifdef SPINLOCK
+spinlock_t eroute_lock = SPIN_LOCK_UNLOCKED;
+#else /* SPINLOCK */
+spinlock_t eroute_lock;
+#endif /* SPINLOCK */
+
+int
+ipsec_radijinit(void)
+{
+       maj_keylen = sizeof (struct sockaddr_encap);
+
+       rj_init();
+       
+       if (rj_inithead((void **)&rnh, 16) == 0) /* 16 is bit offset of sen_type */
+               return -1;
+       return 0;
+}
+
+int
+ipsec_radijcleanup(void)
+{
+       int error;
+
+       spin_lock_bh(&eroute_lock);
+
+       error = radijcleanup();
+
+       spin_unlock_bh(&eroute_lock);
+
+       return error;
+}
+
+int
+ipsec_cleareroutes(void)
+{
+       int error;
+
+       spin_lock_bh(&eroute_lock);
+
+       error = radijcleartree();
+
+       spin_unlock_bh(&eroute_lock);
+
+       return error;
+}
+
+int
+ipsec_breakroute(struct sockaddr_encap *eaddr, struct sockaddr_encap *emask)
+{
+       struct radij_node *rn;
+       int error;
+#ifdef CONFIG_IPSEC_DEBUG
+       char buf1[64], buf2[64];
+       
+       if (debug_eroute) {
+               subnettoa(eaddr->sen_ip_src, emask->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(eaddr->sen_ip_dst, emask->sen_ip_dst, 0, buf2, sizeof(buf2));
+               printk("klips_debug:ipsec_breakroute: attempting to delete eroute for %s->%s\n",
+                              buf1, buf2);
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       spin_lock_bh(&eroute_lock);
+
+       if ((error = rj_delete(eaddr, emask, rnh, &rn)) != 0) {
+               spin_unlock_bh(&eroute_lock);
+               KLIPS_PRINT(debug_eroute, "klips_debug:ipsec_breakroute: "
+                           "node not found, eroute delete failed.\n");
+               return error;
+       }
+
+       spin_unlock_bh(&eroute_lock);
+       
+       if (rn->rj_flags & (RJF_ACTIVE | RJF_ROOT))
+               panic ("ipsec_breakroute RMT_DELEROUTE root or active node\n");
+       
+       memset((caddr_t)rn, 0, sizeof (struct eroute));
+       kfree(rn);
+       
+       return 0;
+}
+
+int
+ipsec_makeroute(struct sockaddr_encap *eaddr, struct sockaddr_encap *emask, struct sa_id said)
+{
+       struct eroute *retrt;
+       int error;
+       char sa[SATOA_BUF];
+       size_t sa_len;
+#ifdef CONFIG_IPSEC_DEBUG
+       char buf1[64], buf2[64];
+       
+       if (debug_eroute) {
+               subnettoa(eaddr->sen_ip_src, emask->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(eaddr->sen_ip_dst, emask->sen_ip_dst, 0, buf2, sizeof(buf2));
+               sa_len = satoa(said, 0, sa, SATOA_BUF);
+               printk("klips_debug:ipsec_makeroute: attempting to insert eroute for %s->%s, SA: %s\n",
+                      buf1, buf2, sa);
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       retrt = (struct eroute *)kmalloc(sizeof (struct eroute), GFP_ATOMIC);
+       if (retrt == NULL) {
+               printk("klips_error:ipsec_makeroute: not able to allocate kernel memory");
+               return ENOMEM;
+       }
+       memset((caddr_t)retrt, 0, sizeof (struct eroute));
+
+       retrt->er_eaddr = *eaddr;
+       retrt->er_emask = *emask;
+       retrt->er_said = said;
+       rd_key((&(retrt->er_rjt))) = &(retrt->er_eaddr);
+       
+       spin_lock_bh(&eroute_lock);
+
+       error = rj_addroute(&(retrt->er_eaddr), &(retrt->er_emask), 
+                        rnh, retrt->er_rjt.rd_nodes);
+
+       spin_unlock_bh(&eroute_lock);
+       
+       if(error) {
+               sa_len = satoa(said, 0, sa, SATOA_BUF);
+               printk("klips_debug:ipsec_makeroute: rj_addroute not able to insert eroute for SA:%s\n", sa);
+               kfree(retrt); /* XXX -- should we? */
+               return error;
+       }
+       KLIPS_PRINT(debug_eroute,
+                   "klips_debug:ipsec_makeroute: succeeded, I think...\n");
+       return 0;
+}
+
+struct eroute *
+ipsec_findroute(struct sockaddr_encap *eaddr)
+{
+       struct radij_node *rn;
+#ifdef CONFIG_IPSEC_DEBUG
+       char buf1[ADDRTOA_BUF], buf2[ADDRTOA_BUF];
+       
+       if (debug_radij & DB_RJ_FINDROUTE) {
+               addrtoa(eaddr->sen_ip_src, 0, buf1, sizeof(buf1));
+               addrtoa(eaddr->sen_ip_dst, 0, buf2, sizeof(buf2));
+               printk("klips_debug:ipsec_findroute: %s->%s\n",
+                      buf1, buf2);
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+       rn = rj_match((caddr_t)eaddr, rnh);
+       return (struct eroute *)rn;
+}
+               
+#ifdef CONFIG_PROC_FS
+int
+ipsec_rj_walker_procprint(struct radij_node *rn, void *w0)
+{
+       struct eroute *ro = (struct eroute *)rn;
+       struct rjtentry *rd = (struct rjtentry *)rn;
+       struct wsbuf *w = (struct wsbuf *)w0;
+       char buf1[64], buf2[64];
+       char sa[SATOA_BUF];
+       size_t sa_len;
+       struct sockaddr_encap *key, *mask;
+       
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:ipsec_rj_walker_procprint: rn=%p, w0=%p\n",
+                   rn, w0);
+       if (rn == NULL) {
+               return 120;
+       }
+       
+       if (rn->rj_b >= 0) {
+               return 0;
+       }
+       
+       key = rd_key(rd);
+       mask = rd_mask(rd);
+       
+       if ((key == 0) || (mask == 0)) {
+               return 0;
+       }
+       
+       subnettoa(key->sen_ip_src, mask->sen_ip_src, 0, buf1, sizeof(buf1));
+       subnettoa(key->sen_ip_dst, mask->sen_ip_dst, 0, buf2, sizeof(buf2));
+       sa_len = satoa(ro->er_said, 0, sa, SATOA_BUF);
+       w->len += sprintf(w->buffer + w->len,
+                         "%-18s -> %-18s => %s\n",
+                         buf1, buf2, sa);
+       
+       w->pos = w->begin + w->len;
+       if(w->pos < w->offset) {
+               w->len = 0;
+               w->begin = w->pos;
+       }
+       if (w->pos > w->offset + w->length) {
+               return -ENOBUFS;
+       }
+       return 0;
+}
+#endif          /* CONFIG_PROC_FS */
+
+int
+ipsec_rj_walker_delete(struct radij_node *rn, void *w0)
+{
+       struct rjtentry *rd = (struct rjtentry *)rn;
+       struct radij_node *rn2;
+       int error;
+       struct sockaddr_encap *key, *mask;
+#ifdef CONFIG_IPSEC_DEBUG
+       char buf1[64] = { 0 }, buf2[64] = { 0 };
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       if (rn == NULL) {
+               return 120;
+       }
+       
+       key = rd_key(rd);
+       mask = rd_mask(rd);
+       
+       if(!key || !mask) {
+               return -1;
+       }
+#ifdef CONFIG_IPSEC_DEBUG
+       if(debug_radij) {
+               subnettoa(key->sen_ip_src, mask->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(key->sen_ip_dst, mask->sen_ip_dst, 0, buf2, sizeof(buf2));
+               printk("klips_debug:ipsec_rj_walker_delete: deleting: %s -> %s\n",
+                      buf1, buf2);
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       if((error = rj_delete(key, mask, rnh, &rn2))) {
+               KLIPS_PRINT(debug_radij,
+                           "klips_debug:ipsec_rj_walker_delete: "
+                           "rj_delete failed with error=%d.\n", error);
+               return error;
+       }
+
+       if(rn2 != rn) {
+               printk("klips_debug:ipsec_rj_walker_delete: tried to delete a different node?!?"
+                      "This should never happen!\n");
+       }
+       memset((caddr_t)rn, 0, sizeof (struct eroute));
+       kfree(rn);
+       
+       return 0;
+}
+
+/*
+ * $Log$
+ * Revision 1.41  2000/11/06 04:32:08  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ *
+ * Revision 1.40  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.39  2000/08/30 05:25:20  rgb
+ * Correct debug text in ipsec_breakroute() from incorrect
+ * "ipsec_callback".
+ *
+ * Revision 1.38  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.37  2000/03/16 14:02:50  rgb
+ * Fixed debug scope to enable compilation with debug off.
+ *
+ * Revision 1.36  2000/01/21 06:14:46  rgb
+ * Added debugging text to ipsec_rj_walker_delete().
+ * Set return code to negative for consistency.
+ *
+ * Revision 1.35  1999/11/23 23:05:24  rgb
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ *
+ * Revision 1.34  1999/11/18 04:13:56  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ *
+ * Revision 1.33  1999/11/17 15:53:39  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.32  1999/10/26 13:58:33  rgb
+ * Put spinlock flags variable declaration outside the debug compiler
+ * directive to enable compilation with debug shut off.
+ *
+ * Revision 1.31  1999/10/15 22:13:29  rgb
+ * Clean out cruft.
+ * Align /proc/net/ipsec_eroute output for easier readability.
+ * Fix double linefeed in radij debug output.
+ * Fix double locking bug that locks up 2.0.36 but not 2.0.38.
+ *
+ * Revision 1.30  1999/10/08 18:37:33  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.29  1999/10/03 18:52:45  rgb
+ * Spinlock support for 2.0.xx.
+ * Dumb return code spin_unlock fix.
+ *
+ * Revision 1.28  1999/10/01 16:22:24  rgb
+ * Switch from assignment init. to functional init. of spinlocks.
+ *
+ * Revision 1.27  1999/10/01 15:44:53  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.26  1999/10/01 00:01:23  rgb
+ * Added eroute structure locking.
+ *
+ * Revision 1.25  1999/06/10 16:07:30  rgb
+ * Silence delete eroute on no debug.
+ *
+ * Revision 1.24  1999/05/09 03:25:36  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.23  1999/05/05 22:02:31  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.22  1999/04/29 15:17:23  rgb
+ * Add return values to init and cleanup functions.
+ * Add sanity checking for null pointer arguments.
+ *
+ * Revision 1.21  1999/04/11 00:28:58  henry
+ * GPL boilerplate
+ *
+ * Revision 1.20  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.19  1999/02/17 16:50:35  rgb
+ * Clean out unused cruft.
+ * Consolidate for space and speed efficiency.
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ *
+ * Revision 1.18  1999/01/22 06:22:06  rgb
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ *
+ * Revision 1.17  1998/12/02 03:09:39  rgb
+ * Clean up debug printing conditionals to compile with debugging off.
+ *
+ * Revision 1.16  1998/12/01 13:49:39  rgb
+ * Wrap version info printing in debug switches.
+ *
+ * Revision 1.15  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.14  1998/10/31 06:48:17  rgb
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.13  1998/10/27 13:48:09  rgb
+ * Cleaned up /proc/net/ipsec_* filesystem for easy parsing by scripts.
+ * Fixed less(1) truncated output bug.
+ * Code clean-up.
+ *
+ * Revision 1.12  1998/10/25 02:41:36  rgb
+ * Change return type on ipsec_breakroute and ipsec_makeroute and add an
+ * argument to be able to transmit more infomation about errors.
+ * Fix cut-and-paste debug statement identifier.
+ *
+ * Revision 1.11  1998/10/22 06:45:39  rgb
+ * Cleaned up cruft.
+ * Convert to use satoa for printk.
+ *
+ * Revision 1.10  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.9  1998/10/09 04:30:52  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ * Deleted old commented out cruft.
+ *
+ * Revision 1.8  1998/08/06 17:24:23  rgb
+ * Fix addrtoa return code bug from stale manpage advice preventing packets
+ * from being erouted.
+ *
+ * Revision 1.7  1998/08/06 07:44:59  rgb
+ * Fixed /proc/net/ipsec_eroute subnettoa and addrtoa return value bug that
+ * ended up in nothing being printed.
+ *
+ * Revision 1.6  1998/08/05 22:16:41  rgb
+ * Cleanup to prevent cosmetic errors (ie. debug output) from being fatal.
+ *
+ * Revision 1.5  1998/07/29 20:38:44  rgb
+ * Debug and fix subnettoa and addrtoa output.
+ *
+ * Revision 1.4  1998/07/28 00:02:39  rgb
+ * Converting to exclusive use of addrtoa.
+ * Fix eroute delete.
+ *
+ * Revision 1.3  1998/07/14 18:21:26  rgb
+ * Add function to clear the eroute table.
+ *
+ * Revision 1.2  1998/06/23 02:59:14  rgb
+ * Added debugging output to eroute add/delete routines.
+ *
+ * Revision 1.9  1998/06/18 21:29:06  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid kernel
+ * build scripts happier in presence of symbolic links
+ *
+ * Revision 1.8  1998/06/05 02:32:26  rgb
+ * Fix spi ntoh kernel debug output.
+ *
+ * Revision 1.7  1998/05/25 20:30:37  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Revision 1.6  1998/05/21 13:08:57  rgb
+ * Rewrote procinfo subroutines to avoid *bad things* when more that 3k of
+ * information is available for printout.
+ *
+ * Revision 1.5  1998/05/18 21:35:55  rgb
+ * Clean up output for numerical consistency and readability.  Zero freed
+ * eroute memory.
+ *
+ * Revision 1.4  1998/04/21 21:28:58  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.3  1998/04/14 17:30:39  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.2  1998/04/12 22:03:23  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:10  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_radij.h linux/net/ipsec/ipsec_radij.h
--- linux-noipsec/net/ipsec/ipsec_radij.h       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_radij.h       Fri Sep  8 21:12:56 2000
@@ -0,0 +1,146 @@
+/*
+ * Definitions relevant to the IPSEC <> radij tree interfacing
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include <freeswan.h>
+
+int ipsec_walk(char *);
+
+int ipsec_rj_walker_procprint(struct radij_node *, void *);
+int ipsec_rj_walker_delete(struct radij_node *, void *);
+
+struct wsbuf
+{
+       char *buffer;
+       int length;
+       off_t offset;
+       int len;
+       int prev_len;
+       off_t begin;
+       off_t pos;
+};
+
+#if 0
+struct eroute * ipsec_makeroute(struct sockaddr_encap *ea, struct sockaddr_encap *em, struct sa_id);
+#endif
+int ipsec_makeroute(struct sockaddr_encap *ea, struct sockaddr_encap *em, struct sa_id);
+
+#if 0
+struct eroute * ipsec_breakroute(struct sockaddr_encap *ea, struct sockaddr_encap *em);
+#endif
+int ipsec_breakroute(struct sockaddr_encap *ea, struct sockaddr_encap *em);
+
+int ipsec_radijinit(void);
+int ipsec_cleareroutes(void);
+int ipsec_radijcleanup(void);
+
+extern struct radij_node_head *rnh;
+extern spinlock_t eroute_lock;
+
+struct eroute * ipsec_findroute(struct sockaddr_encap *);
+
+#define O1(x) (int)(((x)>>24)&0xff)
+#define O2(x) (int)(((x)>>16)&0xff)
+#define O3(x) (int)(((x)>>8)&0xff)
+#define O4(x) (int)(((x))&0xff)
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_radij;
+void rj_dumptrees(void);
+
+#define DB_RJ_DUMPTREES        0x0001
+#define DB_RJ_FINDROUTE 0x0002
+#endif /* CONFIG_IPSEC_DEBUG */
+
+/*
+ * $Log$
+ * Revision 1.11  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  1999/11/17 15:53:39  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.9  1999/10/01 00:01:23  rgb
+ * Added eroute structure locking.
+ *
+ * Revision 1.8  1999/04/11 00:28:59  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/01/22 06:23:26  rgb
+ * Cruft clean-out.
+ *
+ * Revision 1.5  1998/10/25 02:42:08  rgb
+ * Change return type on ipsec_breakroute and ipsec_makeroute and add an
+ * argument to be able to transmit more infomation about errors.
+ *
+ * Revision 1.4  1998/10/19 14:44:29  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.3  1998/07/28 00:03:31  rgb
+ * Comment out temporary inet_nto4u() kluge.
+ *
+ * Revision 1.2  1998/07/14 18:22:00  rgb
+ * Add function to clear the eroute table.
+ *
+ * Revision 1.1  1998/06/18 21:27:49  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.5  1998/05/25 20:30:38  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Revision 1.4  1998/05/21 13:02:56  rgb
+ * Imported definitions from ipsec_radij.c and radij.c to support /proc 3k
+ * limit fix.
+ *
+ * Revision 1.3  1998/04/21 21:29:09  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/14 17:30:39  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.1  1998/04/09 03:06:10  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_rcv.c linux/net/ipsec/ipsec_rcv.c
--- linux-noipsec/net/ipsec/ipsec_rcv.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_rcv.c Sat Nov 25 04:50:36 2000
@@ -0,0 +1,1973 @@
+/*
+ * receive code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_rcv_c_version[] = "RCSID $Id$";
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* SPINLOCK_23 */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#define proto_priv cb
+#endif /* NET21 */
+#include <asm/checksum.h>
+#include <net/ip.h>
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+#include "ipsec_tunnel.h"
+#include "ipsec_rcv.h"
+#if defined(CONFIG_IPSEC_ESP) || defined(CONFIG_IPSEC_AH)
+#include "ipsec_ah.h"
+#endif /* defined(CONFIG_IPSEC_ESP) || defined(CONFIG_IPSEC_AH) */
+#ifdef CONFIG_IPSEC_ESP
+#include "ipsec_esp.h"
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_IPCOMP
+#include "ipcomp.h"
+#endif /* CONFIG_IPSEC_COMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef CONFIG_IPSEC_DEBUG
+int debug_ah = 0;
+int debug_esp = 0;
+int debug_rcv = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+int sysctl_ipsec_inbound_policy_check = 1;
+
+#ifdef CONFIG_IPSEC_ESP
+extern void des_ede3_cbc_encrypt(caddr_t, caddr_t, int, caddr_t, caddr_t, caddr_t, caddr_t, int);
+#endif /* !CONFIG_IPSEC_ESP */
+#if defined(CONFIG_IPSEC_ESP) || defined(CONFIG_IPSEC_AH)
+__u32 zeroes[AH_AMAX];
+#endif /* defined(CONFIG_IPSEC_ESP) || defined(CONFIG_IPSEC_AH) */
+
+/*
+ * Check-replay-window routine, adapted from the original 
+ * by J. Hughes, from draft-ietf-ipsec-esp-des-md5-03.txt
+ *
+ *  This is a routine that implements a 64 packet window. This is intend-
+ *  ed on being an implementation sample.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_checkreplaywindow(struct tdb*tdbp, __u32 seq)
+{
+       __u32 diff;
+       
+       if (tdbp->tdb_replaywin == 0)   /* replay shut off */
+               return 1;
+       if (seq == 0) 
+               return 0;               /* first == 0 or wrapped */
+
+       /* new larger sequence number */
+       if (seq > tdbp->tdb_replaywin_lastseq) {
+               return 1;               /* larger is good */
+       }
+       diff = tdbp->tdb_replaywin_lastseq - seq;
+
+       /* too old or wrapped */ /* if wrapped, kill off SA? */
+       if (diff >= tdbp->tdb_replaywin) {
+               return 0;
+       }
+       /* this packet already seen */
+       if (tdbp->tdb_replaywin_bitmap & (1 << diff))
+               return 0;
+       return 1;                       /* out of order but good */
+}
+
+DEBUG_NO_STATIC int
+ipsec_updatereplaywindow(struct tdb*tdbp, __u32 seq)
+{
+       __u32 diff;
+       
+       if (tdbp->tdb_replaywin == 0)   /* replay shut off */
+               return 1;
+       if (seq == 0) 
+               return 0;               /* first == 0 or wrapped */
+
+       /* new larger sequence number */
+       if (seq > tdbp->tdb_replaywin_lastseq) {
+               diff = seq - tdbp->tdb_replaywin_lastseq;
+
+               /* In win, set bit for this pkt */
+               if (diff < tdbp->tdb_replaywin)
+                       tdbp->tdb_replaywin_bitmap =
+                               (tdbp->tdb_replaywin_bitmap << diff) | 1;
+               else
+                       /* This packet has way larger seq num */
+                       tdbp->tdb_replaywin_bitmap = 1;
+
+               if(seq - tdbp->tdb_replaywin_lastseq - 1 > tdbp->tdb_replaywin_maxdiff) {
+                       tdbp->tdb_replaywin_maxdiff = seq - tdbp->tdb_replaywin_lastseq - 1;
+               }
+               tdbp->tdb_replaywin_lastseq = seq;
+               return 1;               /* larger is good */
+       }
+       diff = tdbp->tdb_replaywin_lastseq - seq;
+
+       /* too old or wrapped */ /* if wrapped, kill off SA? */
+       if (diff >= tdbp->tdb_replaywin) {
+/*
+               if(seq < 0.25*max && tdbp->tdb_replaywin_lastseq > 0.75*max) {
+                       deltdbchain(tdbp);
+               }
+*/     
+               return 0;
+       }
+       /* this packet already seen */
+       if (tdbp->tdb_replaywin_bitmap & (1 << diff))
+               return 0;
+       tdbp->tdb_replaywin_bitmap |= (1 << diff);      /* mark as seen */
+       return 1;                       /* out of order but good */
+}
+
+int
+#ifdef NET_21
+ipsec_rcv(struct sk_buff *skb, unsigned short xlen)
+#else /* NET_21 */
+ipsec_rcv(struct sk_buff *skb, struct device *dev, struct options *opt, 
+               __u32 daddr, unsigned short xlen, __u32 saddr,
+                                   int redo, struct inet_protocol *protocol)
+#endif /* NET_21 */
+{
+#ifdef NET_21
+#ifdef CONFIG_IPSEC_DEBUG
+       struct device *dev = skb->dev;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* NET_21 */
+       unsigned char protoc;
+       struct iphdr *ipp;
+       int authlen = 0;
+#ifdef CONFIG_IPSEC_ESP
+       struct esp *espp = NULL;
+       int esphlen = 0;
+       __u32 iv[2];
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+       struct ah *ahp = NULL;
+       int ahhlen = 0;
+       struct iphdr ipo;
+#endif /* CONFIG_IPSEC_AH */
+       unsigned char *authenticator = NULL;
+       union {
+               MD5_CTX         md5;
+               SHA1_CTX        sha1;
+       } tctx;
+       __u8 hash[AH_AMAX];
+#if defined(CONFIG_IPSEC_ESP) || defined(CONFIG_IPSEC_AH)
+#endif /* defined(CONFIG_IPSEC_ESP) || defined(CONFIG_IPSEC_AH) */
+#ifdef CONFIG_IPSEC_IPCOMP
+       struct ipcomphdr*compp = NULL;
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+       int hard_header_len;
+       int iphlen;
+       unsigned char *dat;
+       struct tdb *tdbp = NULL;
+       struct sa_id said;
+       struct net_device_stats *stats = NULL;          /* This device's statistics */
+       struct device *ipsecdev = NULL, *prvdev;
+       struct ipsecpriv *prv;
+       char name[9];
+       char sa[SATOA_BUF];
+       size_t sa_len;
+       char ipaddr_txt[ADDRTOA_BUF];
+       int i;
+       struct in_addr ipaddr;
+       __u8 next_header = 0;
+       __u8 proto;
+       
+#ifdef CONFIG_IPSEC_ESP
+       int pad = 0, padlen;
+#endif /* CONFIG_IPSEC_ESP */
+       int ilen, len, replay = 0;
+       __u8 *idat;
+       struct tdb* tdbprev = NULL;
+       struct tdb* tdbnext = NULL;
+#ifdef INBOUND_POLICY_CHECK_eroute
+       struct sockaddr_encap matcher;  /* eroute search key */
+       struct eroute *er;
+       struct tdb* policy_tdb = NULL;
+       struct sa_id policy_said;
+       struct sockaddr_encap policy_eaddr;
+       struct sockaddr_encap policy_emask;
+#endif /* INBOUND_POLICY_CHECK_eroute */
+
+       /* Don't unlink in the middle of a turnaround */
+       MOD_INC_USE_COUNT;
+       
+       if (skb == NULL) {
+               KLIPS_PRINT(debug_rcv, 
+                           "klips_debug:ipsec_rcv: "
+                           "NULL skb passed in.\n");
+               goto rcvleave;
+       }
+               
+       if (skb->data == NULL) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NULL skb->data passed in, packet is bogus, dropping.\n");
+               goto rcvleave;
+       }
+               
+       ipp = (struct iphdr *)skb->data;
+       iphlen = ipp->ihl << 2;
+       /* dev->hard_header_len is unreliable and should not be used */
+       hard_header_len = skb->mac.raw ? (skb->data - skb->mac.raw) : 0;
+       if((hard_header_len < 0) || (hard_header_len > skb_headroom(skb)))
+               hard_header_len = 0;
+
+#ifdef NET_21
+       /* if skb was cloned (most likely due to a packet sniffer such as
+          tcpdump being momentarily attached to the interface), make
+          a copy of our own to modify */
+       if(skb_cloned(skb)) {
+               /* include any mac header while copying.. */
+               if(skb_headroom(skb) < hard_header_len) {
+                       printk(KERN_WARNING "klips_error:ipsec_rcv: "
+                              "tried to skb_push hhlen=%d, %d available.  "
+                              "This should never happen, please report.\n",
+                              hard_header_len, skb_headroom(skb));
+                       goto rcvleave;
+               }
+               skb_push(skb, hard_header_len);
+               if ((skb = skb_cow(skb, skb_headroom(skb))) == NULL) {
+                       goto rcvleave;
+               }
+               if(skb->len < hard_header_len) {
+                       printk(KERN_WARNING "klips_error:ipsec_rcv: "
+                              "tried to skb_pull hhlen=%d, %d available.  "
+                              "This should never happen, please report.\n",
+                              hard_header_len, skb->len);
+                       goto rcvleave;
+               }
+               skb_pull(skb, hard_header_len);
+       }
+       
+#endif /* NET_21 */
+               
+       KLIPS_PRINT(debug_rcv, 
+                   "klips_debug:ipsec_rcv: <<< Info -- ");
+       KLIPS_PRINTMORE(debug_rcv && skb->dev, "skb->dev=%s ",
+                   skb->dev->name ? skb->dev->name : "NULL");
+       KLIPS_PRINTMORE(debug_rcv && dev, "dev=%s ",
+                   dev->name ? dev->name : "NULL");
+       KLIPS_PRINTMORE(debug_rcv, "\n");
+
+       KLIPS_PRINT(debug_rcv && !(skb->dev && dev && (skb->dev == dev)),
+                   "klips_debug:ipsec_rcv: Informational -- "
+                   "**if this happens, find out why** "
+                   "skb->dev:%s is not equal to dev:%s\n",
+                   skb->dev ? (skb->dev->name ? skb->dev->name : "NULL") : "NULL",
+                   dev ? (dev->name ? dev->name : "NULL") : "NULL");
+
+       protoc = ipp->protocol;
+#ifndef NET_21
+       if((!protocol) || (protocol->protocol != protoc)) {
+               KLIPS_PRINT(debug_rcv & DB_RX_TDB,
+                           "klips_debug:ipsec_rcv: "
+                           "protocol arg is NULL or unequal to the packet contents, this is odd, using value in packet.\n");
+       }
+#endif /* !NET_21 */
+
+       if( (protoc != IPPROTO_AH) &&
+#ifdef CONFIG_IPSEC_IPCOMP
+           (protoc != IPPROTO_COMP) &&
+#endif /* CONFIG_IPSEC_IPCOMP */
+           (protoc != IPPROTO_ESP) ) {
+               KLIPS_PRINT(debug_rcv & DB_RX_TDB,
+                           "klips_debug:ipsec_rcv: Why the hell is someone "
+                           "passing me a non-ipsec packet? -- dropped.\n");
+               goto rcvleave;
+       }
+
+       if(skb->dev) {
+               for(i = 0; i < IPSEC_NUM_IF; i++) {
+                       sprintf(name, "ipsec%d", i);
+                       if(!strcmp(name, skb->dev->name)) {
+                               prv = (struct ipsecpriv *)(skb->dev->priv);
+                               if(prv) {
+                                       stats = (struct net_device_stats *) &(prv->mystats);
+                               }
+                               ipsecdev = skb->dev;
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: Info -- pkt "
+                                           "already proc'ed a group of ipsec headers, "
+                                           "processing next group of ipsec headers.\n");
+                               break;
+                       }
+                       if((ipsecdev = ipsec_dev_get(name)) == NULL) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_error:ipsec_rcv: device %s does "
+                                           "not exist\n", name);
+                       }
+                       prv = ipsecdev ? (struct ipsecpriv *)(ipsecdev->priv) : NULL;
+                       prvdev = prv ? (struct device *)(prv->dev) : NULL;
+                       
+                       KLIPS_PRINT(debug_rcv && prvdev, 
+                                   "klips_debug:ipsec_rcv: physical device"
+                                   " for device %s is %s\n",
+                                   name, prvdev->name);
+                       if(prvdev && skb->dev &&
+                          !strcmp(prvdev->name, skb->dev->name)) {
+                               stats = prv ? ((struct net_device_stats *) &(prv->mystats)) : NULL;
+                               skb->dev = ipsecdev;
+                               if(stats) {
+                                       stats->rx_packets++;
+                               }
+                               break;
+                       }
+               }
+       } else {
+               KLIPS_PRINT(debug_rcv, 
+                           "klips_debug:ipsec_rcv: device supplied"
+                           " with skb is NULL\n");
+       }
+                       
+       if(!stats) {
+               ipsecdev = NULL;
+       }
+       KLIPS_PRINT((debug_rcv && !stats),
+                   "klips_error:ipsec_rcv: packet received from physical "
+                   "I/F (%s) not connected to ipsec I/F.  Cannot record "
+                   "stats.\n"
+                   "klips_error          May not have SA for decoding.  "
+                   "Is IPSEC traffic expected on this I/F?  "
+                   "Check routing.\n",
+                   skb->dev ? (skb->dev->name ? skb->dev->name : "NULL") : "NULL");
+
+       KLIPS_IP_PRINT(debug_rcv, ipp);
+
+       /* begin decapsulating loop here */
+       do {
+               authlen = 0;
+#ifdef CONFIG_IPSEC_ESP
+               espp = NULL;
+               esphlen = 0;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+               ahp = NULL;
+               ahhlen = 0;
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_IPCOMP
+               compp = NULL;
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+               len = skb->len;
+               dat = skb->data;
+               ipp = (struct iphdr *)skb->data;
+               proto = ipp->protocol;
+               ipaddr.s_addr = ipp->saddr;
+               addrtoa(ipaddr, 0, ipaddr_txt, sizeof(ipaddr_txt));
+               
+               iphlen = ipp->ihl << 2;
+               ipp->check = 0;                 /* we know the sum is good */
+               
+#ifdef CONFIG_IPSEC_ESP
+               /* XXX this will need to be 8 for IPv6 */
+               if ((proto == IPPROTO_ESP) && ((len - iphlen) % 4)) {
+                       printk("klips_error:ipsec_rcv: "
+                              "got packet with content length = %d from %s "
+                              "-- should be on 4 octet boundary, packet dropped\n",
+                              len - iphlen, ipaddr_txt);
+                       if(stats) {
+                               stats->rx_errors++;
+                       }
+                       goto rcvleave;
+               }
+#endif /* !CONFIG_IPSEC_ESP */
+               
+               /*
+                * Find tunnel control block and (indirectly) call the
+                * appropriate tranform routine. The resulting sk_buf
+                * is a valid IP packet ready to go through input processing.
+                */
+               
+               said.dst.s_addr = ipp->daddr;
+               switch(proto) {
+#ifdef CONFIG_IPSEC_ESP
+               case IPPROTO_ESP:
+                       espp = (struct esp *)(skb->data + iphlen);
+                       said.spi = espp->esp_spi;
+                       break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+               case IPPROTO_AH:
+                       ahp = (struct ah *)(skb->data + iphlen);
+                       said.spi = ahp->ah_spi;
+                       break;
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_IPCOMP
+               case IPPROTO_COMP:
+                       compp = (struct ipcomphdr *)(skb->data + iphlen);
+                       said.spi = htonl((__u32)ntohs(compp->ipcomp_cpi));
+                       break;
+#endif /* CONFIG_IPSEC_IPCOMP */
+               default:
+                       if(stats) {
+                               stats->rx_errors++;
+                       }
+                       goto rcvleave;
+               }
+               said.proto = proto;
+               sa_len = satoa(said, 0, sa, SATOA_BUF);
+               
+#ifdef CONFIG_IPSEC_AH
+               if(proto == IPPROTO_AH) {
+                       ahhlen = (ahp->ah_hl << 2) +
+                               ((caddr_t)&(ahp->ah_rpl) - (caddr_t)ahp);
+                       next_header = ahp->ah_nh;
+                       if (ahhlen != sizeof(struct ah)) {
+                               KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                                           "klips_debug:ipsec_rcv: bad "
+                                           "authenticator length %d, expected "
+                                           "%d from %s\n",
+                                           ahhlen - ((caddr_t)(ahp->ah_data) -
+                                                     (caddr_t)ahp),
+                                           AHHMAC_HASHLEN,
+                                           ipaddr_txt);
+                               if(stats) {
+                                       stats->rx_errors++;
+                               }
+                               goto rcvleave;
+                       }
+                       
+               }
+#endif /* CONFIG_IPSEC_AH */
+               
+               /*
+                * The spinlock is to prevent any other process from
+                * accessing or deleting the structure while we are
+                * using and updating it.
+                */
+               spin_lock(&tdb_lock);
+               
+#ifdef CONFIG_IPSEC_IPCOMP
+               if (proto == IPPROTO_COMP) {
+                       unsigned int flags = 0;
+                       if (tdbp == NULL) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "Incoming packet with outer IPCOMP "
+                                           "header SA:%s: not yet supported "
+                                           "by KLIPS, dropped\n", sa);
+                               if(stats) {
+                                       stats->rx_dropped++;
+                               }
+
+                               spin_unlock(&tdb_lock);
+                               goto rcvleave;
+                       }
+
+                       tdbprev = tdbp;
+                       tdbp = tdbnext;
+
+                       if(sysctl_ipsec_inbound_policy_check
+                          && ((tdbp == NULL)
+                              || ((tdbp != NULL)
+                                  && ((ntohl(tdbp->tdb_said.spi) & 0x0000ffff)
+                                      != ntohl(said.spi))))) {
+                               char sa2[SATOA_BUF];
+
+                               if(tdbp) {
+                                       sa_len = satoa(tdbp->tdb_said, 0, sa2, SATOA_BUF);
+                               }
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "Incoming packet with SA(IPCA):%s "
+                                           "does not match policy SA(IPCA):%s "
+                                           "cpi=%04x cpi->spi=%08x spi=%08x, spi->cpi=%04x for "
+                                           "SA grouping, dropped.\n",
+                                           sa,
+                                           tdbp ? sa2 : "NULL",
+                                           ntohs(compp->ipcomp_cpi),
+                                           (__u32)ntohl(said.spi),
+                                           tdbp ? (__u32)ntohl((tdbp->tdb_said.spi)) : 0,
+                                           tdbp ? (__u16)(ntohl(tdbp->tdb_said.spi) & 0x0000ffff) : 0);
+                               if(stats) {
+                                       stats->rx_dropped++;
+                               }
+
+                               spin_unlock(&tdb_lock);
+                               goto rcvleave;
+                       }
+
+                       if (tdbp) {
+                               tdbp->tdb_comp_ratio_cbytes += ntohs(ipp->tot_len);
+                               tdbnext = tdbp->tdb_inext;
+                       }
+                       next_header = compp->ipcomp_nh;
+
+                       skb = skb_decompress(skb, tdbp, &flags);
+                       if (!skb || flags) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "skb_decompress() returned "
+                                           "error flags=%x, dropped.\n",
+                                           flags);
+                               if (stats) {
+                                   if (flags)
+                                       stats->rx_errors++;
+                                   else
+                                       stats->rx_dropped++;
+                               }
+
+                               spin_unlock(&tdb_lock);
+                               goto rcvleave;
+                       }
+#ifdef NET_21
+                       ipp = skb->nh.iph;
+#else /* NET_21 */
+                       ipp = skb->ip_hdr;
+#endif /* NET_21 */
+
+                       if (tdbp) {
+                               tdbp->tdb_comp_ratio_dbytes += ntohs(ipp->tot_len);
+                       }
+
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "packet decompressed SA(IPCA):%s "
+                                   "cpi->spi=%08x spi=%08x, spi->cpi=%04x, nh=%d.\n",
+                                   sa,
+                                   (__u32)ntohl(said.spi),
+                                   tdbp ? (__u32)ntohl((tdbp->tdb_said.spi)) : 0,
+                                   tdbp ? (__u16)(ntohl(tdbp->tdb_said.spi) & 0x0000ffff) : 0,
+                                   next_header);
+                       KLIPS_IP_PRINT(debug_rcv & DB_RX_PKTRX, ipp);
+
+                       continue;
+                       /* Skip rest of stuff and decapsulate next inner
+                          packet, if any */
+               }
+#endif /* CONFIG_IPSEC_IPCOMP */
+               
+               tdbp = gettdb(&said);
+               if (tdbp == NULL) {
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: no Tunnel Descriptor "
+                                   "Block for SA:%s: incoming packet with no SA "
+                                   "dropped\n", sa);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+
+               if(sysctl_ipsec_inbound_policy_check) {
+                       if(ipp->saddr != ((struct sockaddr_in*)(tdbp->tdb_addr_s))->sin_addr.s_addr) {
+                               spin_unlock(&tdb_lock);
+                               ipaddr.s_addr = ipp->saddr;
+                               addrtoa(ipaddr, 0, ipaddr_txt, sizeof(ipaddr_txt));
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s, src=%s of pkt does not agree with expected SA source address policy.\n",
+                                           sa, ipaddr_txt);
+                               if(stats) {
+                                       stats->rx_dropped++;
+                               }
+                               goto rcvleave;
+                       }
+                       {
+                               ipaddr.s_addr = ipp->saddr;
+                               addrtoa(ipaddr, 0, ipaddr_txt, sizeof(ipaddr_txt));
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s, src=%s of pkt agrees with expected SA source address policy.\n",
+                                           sa, ipaddr_txt);
+                       }
+                       if(tdbnext) {
+                               if(tdbnext != tdbp) {
+                                       spin_unlock(&tdb_lock);
+                                       KLIPS_PRINT(debug_rcv,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "unexpected SA:%s: does not agree with tdb->inext policy, dropped\n",
+                                                   sa);
+                                       if(stats) {
+                                               stats->rx_dropped++;
+                                       }
+                                       goto rcvleave;
+                               }
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s grouping from previous SA is OK.\n",
+                                           sa);
+                       } else {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s First SA in group.\n",
+                                           sa);
+                       }
+                       
+#if 1
+                       if(tdbp->tdb_onext) {
+                               if(tdbprev != tdbp->tdb_onext) {
+                                       spin_unlock(&tdb_lock);
+                                       KLIPS_PRINT(debug_rcv,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "unexpected SA:%s: does not agree with tdb->onext policy, dropped.\n",
+                                                   sa);
+                                       if(stats) {
+                                               stats->rx_dropped++;
+                                       }
+                                       goto rcvleave;
+                               } else {
+                                       KLIPS_PRINT(debug_rcv,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "SA:%s grouping to previous SA is OK.\n",
+                                                   sa);
+                               }
+                       } else {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s No previous backlink in group.\n",
+                                           sa);
+                       }
+#endif
+               }
+               
+               /* If it is in larval state, drop the packet, we cannot process yet. */
+               if(tdbp->tdb_state == SADB_SASTATE_LARVAL) {
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "TDB in larval state, cannot be used yet, "
+                                   "dropping packet.\n");
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               
+               if(tdbp->tdb_state == SADB_SASTATE_DEAD) {
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "TDB in dead state, cannot be used any more, "
+                                   "dropping packet.\n");
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               
+               if(tdbp->tdb_lifetime_bytes_h &&
+                  (tdbp->tdb_lifetime_bytes_c > tdbp->tdb_lifetime_bytes_h)) {
+                       pfkey_expire(tdbp, 1);
+                       deltdbchain(tdbp);
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "hard bytes lifetime of SA:%s has been reached, "
+                                   "SA expired, incoming packet dropped.\n", sa);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               if(tdbp->tdb_lifetime_bytes_s &&
+                  (tdbp->tdb_lifetime_bytes_c > tdbp->tdb_lifetime_bytes_s)) {
+                       tdbp->tdb_state = SADB_SASTATE_DYING;
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "soft bytes lifetime of SA:%s has been reached, "
+                                   "SA expiring, soft expire message sent up, "
+                                   "incoming packet still processed.\n", sa);
+                       pfkey_expire(tdbp, 0);
+               }
+               
+               if(tdbp->tdb_lifetime_addtime_h &&
+                  ((jiffies / HZ) - tdbp->tdb_lifetime_addtime_c >
+                   tdbp->tdb_lifetime_addtime_h)) {
+                       pfkey_expire(tdbp, 1);
+                       deltdbchain(tdbp);
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "hard addtime lifetime of SA:%s has been reached, "
+                                   "SA expired, incoming packet dropped.\n", sa);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               if(tdbp->tdb_lifetime_addtime_s &&
+                  ((jiffies / HZ) - tdbp->tdb_lifetime_addtime_c >
+                   tdbp->tdb_lifetime_addtime_s)) {
+                       tdbp->tdb_state = SADB_SASTATE_DYING;
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "soft addtime lifetime of SA:%s has been reached, "
+                                   "SA expiring, soft expire message sent up, "
+                                   "incoming packet still processed.\n", sa);
+                       pfkey_expire(tdbp, 0);
+               }
+               
+               if(tdbp->tdb_lifetime_usetime_c) {
+                       if(tdbp->tdb_lifetime_usetime_h &&
+                          ((jiffies / HZ) - tdbp->tdb_lifetime_usetime_c >
+                           tdbp->tdb_lifetime_usetime_h)) {
+                               pfkey_expire(tdbp, 1);
+                               deltdbchain(tdbp);
+                               spin_unlock(&tdb_lock);
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "hard usetime lifetime of SA:%s has been reached, "
+                                           "SA expired, incoming packet dropped.\n", sa);
+                               if(stats) {
+                                       stats->rx_dropped++;
+                               }
+                               goto rcvleave;
+                       }
+                       if(tdbp->tdb_lifetime_usetime_s &&
+                          ((jiffies / HZ) - tdbp->tdb_lifetime_usetime_c >
+                           tdbp->tdb_lifetime_usetime_s)) {
+                               tdbp->tdb_state = SADB_SASTATE_DYING;
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "soft usetime lifetime of SA:%s has been reached, "
+                                           "SA expiring, soft expire message sent up, "
+                                           "incoming packet still processed.\n", sa);
+                               pfkey_expire(tdbp, 0);
+                       }
+               }
+               
+               if(tdbp->tdb_lifetime_packets_h &&
+                  (tdbp->tdb_lifetime_packets_c > tdbp->tdb_lifetime_packets_h)) {
+                       pfkey_expire(tdbp, 1);
+                       deltdbchain(tdbp);
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "hard packets lifetime of SA:%s has been reached, "
+                                   "SA expired, incoming packet dropped.\n", sa);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               if(tdbp->tdb_lifetime_packets_s &&
+                  (tdbp->tdb_lifetime_packets_c > tdbp->tdb_lifetime_packets_s)) {
+                       tdbp->tdb_state = SADB_SASTATE_DYING;
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "soft packets lifetime of SA:%s has been reached, "
+                                   "SA expiring, soft expire message sent up, "
+                                   "incoming packet still processed.\n", sa);
+                       pfkey_expire(tdbp, 0);
+               }
+               
+               /* authenticate, if required */
+               idat = dat + iphlen;
+               switch(tdbp->tdb_authalg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+               case AH_MD5:
+                       authlen = AHHMAC_HASHLEN;
+                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+               case AH_SHA:
+                       authlen = AHHMAC_HASHLEN;
+                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+               case AH_NONE:
+                       authlen = 0;
+                       break;
+               default:
+                       if(stats) {
+                               stats->rx_errors++;
+                       }
+                       tdbp->tdb_alg_errs += 1;
+                       spin_unlock(&tdb_lock);
+                       goto rcvleave;
+               }
+               ilen = len - iphlen - authlen;
+               
+#ifdef CONFIG_IPSEC_ESP
+               KLIPS_PRINT(proto == IPPROTO_ESP && debug_rcv, 
+                           "klips_debug:ipsec_rcv: packet from %s received with"
+                           " seq=%d (iv)=0x%08x%08x iplen=%d esplen=%d sa=%s\n",
+                           ipaddr_txt,
+                           (__u32)ntohl(espp->esp_rpl),
+                           (__u32)ntohl(*((__u32 *)(espp->esp_iv)    )),
+                           (__u32)ntohl(*((__u32 *)(espp->esp_iv) + 1)),
+                           len, ilen, sa);
+#endif /* !CONFIG_IPSEC_ESP */
+               
+               switch(proto) {
+#ifdef CONFIG_IPSEC_ESP
+               case IPPROTO_ESP:
+                       replay = ntohl(espp->esp_rpl);
+                       authenticator = &(dat[len - authlen]);
+                       break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+               case IPPROTO_AH:
+                       replay = ntohl(ahp->ah_rpl);
+                       authenticator = ahp->ah_data;
+                       break;
+#endif /* CONFIG_IPSEC_AH */
+               }
+
+               /* If the sequence number == 0, expire SA, it had rolled */
+               if(tdbp->tdb_replaywin && !replay /* !tdbp->tdb_replaywin_lastseq */) {
+                       deltdbchain(tdbp);
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "replay window counter rolled, expiring SA.\n");
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+
+               if (!ipsec_checkreplaywindow(tdbp, replay)) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_REPLAY,
+                                   "klips_debug:ipsec_rcv: duplicate frame from %s,"
+                                   " packet dropped\n",
+                                   ipaddr_txt);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       tdbp->tdb_replaywin_errs += 1;
+                       spin_unlock(&tdb_lock);
+                       goto rcvleave;
+               }
+               
+               /*
+                * verify authenticator
+                */
+               
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: encalg = %d, authalg = %d.\n",
+                           tdbp->tdb_encalg, tdbp->tdb_authalg);
+               
+               if(tdbp->tdb_authalg) {
+                       switch(tdbp->tdb_authalg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                       case AH_MD5:
+                               tctx.md5 = ((struct md5_ctx*)(tdbp->tdb_key_a))->ictx;
+                               if(proto == IPPROTO_ESP) {
+                                       MD5Update(&tctx.md5, (caddr_t)espp, ilen);
+#ifdef CONFIG_IPSEC_AH
+                               } else {
+                                       ipo = *ipp;
+                                       ipo.tos = 0;    /* mutable RFC 2402 3.3.3.1.1.1 */
+                                       ipo.frag_off = 0;
+                                       ipo.ttl = 0;
+                                       ipo.check = 0;
+                                       
+                                       MD5Update(&tctx.md5, (caddr_t)&ipo,
+                                                 sizeof(struct iphdr));
+                                       MD5Update(&tctx.md5, (caddr_t)ahp,
+                                                 ahhlen - AHHMAC_HASHLEN);
+                                       MD5Update(&tctx.md5, (caddr_t)zeroes,
+                                                 AHHMAC_HASHLEN);
+                                       MD5Update(&tctx.md5,
+                                                 (caddr_t)dat + iphlen + ahhlen,
+                                                 len - iphlen - ahhlen);
+#endif /* CONFIG_IPSEC_AH */
+                               }
+                               MD5Final(hash, &tctx.md5);
+                               tctx.md5 = ((struct md5_ctx*)(tdbp->tdb_key_a))->octx;
+                               MD5Update(&tctx.md5, hash, AHMD596_ALEN);
+                               MD5Final(hash, &tctx.md5);
+                               break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                       case AH_SHA:
+                               tctx.sha1 = ((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx;
+                               if(proto == IPPROTO_ESP) {
+                                       SHA1Update(&tctx.sha1, (caddr_t)espp, ilen);
+#ifdef CONFIG_IPSEC_AH
+                               } else {
+                                       ipo = *ipp;
+                                       ipo.tos = 0;
+                                       ipo.frag_off = 0;
+                                       ipo.ttl = 0;
+                                       ipo.check = 0;
+                                       
+                                       SHA1Update(&tctx.sha1, (caddr_t)&ipo,
+                                                  sizeof(struct iphdr));
+                                       SHA1Update(&tctx.sha1, (caddr_t)ahp,
+                                                  ahhlen - AHHMAC_HASHLEN);
+                                       SHA1Update(&tctx.sha1, (caddr_t)zeroes,
+                                                  AHHMAC_HASHLEN);
+                                       SHA1Update(&tctx.sha1,
+                                                  (caddr_t)dat + iphlen + ahhlen,
+                                                  len - iphlen - ahhlen);
+#endif /* CONFIG_IPSEC_AH */
+                               }
+                               SHA1Final(hash, &tctx.sha1);
+                               tctx.sha1 = ((struct sha1_ctx*)(tdbp->tdb_key_a))->octx;
+                               SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+                               SHA1Final(hash, &tctx.sha1);
+                               break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                       case AH_NONE:
+                               break;
+                       }
+               
+                       if(!authenticator) {
+                               if(stats) {
+                                       stats->rx_dropped++;
+                               }
+                               tdbp->tdb_auth_errs += 1;
+                               spin_unlock(&tdb_lock);
+                               goto rcvleave;
+                       }
+
+                       if (memcmp(hash, authenticator, authlen)) {
+                               KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                                           "klips_debug:ipsec_rcv: auth failed on incoming "
+                                           "packet from %s: hash=%08x%08x%08x "
+                                           "auth=%08x%08x%08x, dropped\n", ipaddr_txt,
+                                           *(__u32*)&hash[0],
+                                           *(__u32*)&hash[4],
+                                           *(__u32*)&hash[8],
+                                           *(__u32*)authenticator,
+                                           *((__u32*)authenticator + 1),
+                                           *((__u32*)authenticator + 2));
+                               if(stats) {
+                                       stats->rx_dropped++;
+                               }
+                               tdbp->tdb_auth_errs += 1;
+                               spin_unlock(&tdb_lock);
+                               goto rcvleave;
+                       } else {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: authentication successful.\n");
+                       }
+                       
+                       memset((caddr_t)&tctx, 0, sizeof(tctx));
+                       memset(hash, 0, sizeof(hash));
+               }
+
+               if (!ipsec_updatereplaywindow(tdbp, replay)) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_REPLAY,
+                                   "klips_debug:ipsec_rcv: duplicate frame from %s,"
+                                   " packet dropped\n",
+                                   ipaddr_txt);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       tdbp->tdb_replaywin_errs += 1;
+                       spin_unlock(&tdb_lock);
+                       goto rcvleave;
+               }
+               
+               switch(proto) {
+#ifdef CONFIG_IPSEC_ESP
+               case IPPROTO_ESP:
+                       switch(tdbp->tdb_encalg) {
+                       case ESP_3DES:
+                               iv[0] = *((__u32 *)(espp->esp_iv)    );
+                               iv[1] = *((__u32 *)(espp->esp_iv) + 1);
+                               esphlen = sizeof(struct esp);
+                               break;
+                       case ESP_NULL:
+                               esphlen = offsetof(struct esp, esp_iv);
+                               break;
+                       default:
+                               if(stats) {
+                                       stats->rx_errors++;
+                               }
+                               tdbp->tdb_alg_errs += 1;
+                               spin_unlock(&tdb_lock);
+                               goto rcvleave;
+                       }
+                       idat += esphlen;
+                       ilen -= esphlen;
+                       
+                       switch(tdbp->tdb_encalg) {
+                       case ESP_3DES:
+                               if ((ilen) % 8) {
+                                       printk("klips_error:ipsec_rcv: "
+                                              "got packet with esplen = %d from %s "
+                                              "-- should be on 8 octet boundary, packet dropped\n",
+                                              ilen, ipaddr_txt);
+                                       if(stats) {
+                                               stats->rx_errors++;
+                                       }
+                                       tdbp->tdb_encsize_errs += 1;
+                                       spin_unlock(&tdb_lock);
+                                       goto rcvleave;
+                               }
+                               des_ede3_cbc_encrypt(idat, idat, ilen,
+                                                    tdbp->tdb_key_e,
+                                                    tdbp->tdb_key_e + sizeof(struct des_eks),
+                                                    tdbp->tdb_key_e + 2 * sizeof(struct des_eks),
+                                                    (caddr_t)iv, 0);
+                               break;
+                       case ESP_NULL:
+                               break;
+                       }
+                       next_header = idat[ilen - 1];
+                       padlen = idat[ilen - 2];
+                       pad = padlen + 2 + authlen;
+                       {
+                               int badpad = 0;
+                               
+                               KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                                           "klips_debug:ipsec_rcv: "
+                                           "padlen=%d, contents: 0x<offset>: 0x<value> 0x<value> ...\n",
+                                           padlen);
+                               
+                               for (i = 1; i <= padlen; i++) {
+                                       if((i % 16) == 1) {
+                                               KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                                                           "klips_debug:           %02x:",
+                                                           i - 1);
+                                       }
+                                       KLIPS_PRINTMORE(debug_rcv & DB_RX_IPAD,
+                                                   " %02x",
+                                                   idat[ilen - 2 - padlen + i - 1]);
+                                       if(i != idat[ilen - 2 - padlen + i - 1]) {
+                                               badpad = 1;
+                                       } 
+                                       if((i % 16) == 0) {
+                                               KLIPS_PRINTMORE(debug_rcv & DB_RX_IPAD,
+                                                           "\n");
+                                       }
+                               }
+                               if((i % 16) != 1) {
+                                       KLIPS_PRINTMORE(debug_rcv & DB_RX_IPAD,
+                                                       "\n");
+                               }
+                               if(badpad) {
+                                       KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "warning, decrypted packet from %s has bad padding\n",
+                                                   ipaddr_txt);
+                                       KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "...may be bad decryption -- not dropped\n");
+                                       tdbp->tdb_encpad_errs += 1;
+                               }
+                               
+                               KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                                           "klips_debug:ipsec_rcv: "
+                                           "packet decrypted from %s: next_header = %d, padding = %d\n",
+                                           ipaddr_txt,
+                                           next_header,
+                                           pad - 2 - authlen);
+                       }
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+               case IPPROTO_AH:
+                       break;
+#endif /* CONFIG_IPSEC_AH */
+               }
+              
+               /*
+                *      Discard the original IP header
+                */
+               
+               ipp->protocol = next_header;
+               
+               switch(proto) {
+#ifdef CONFIG_IPSEC_ESP
+               case IPPROTO_ESP:
+                       ipp->tot_len = htons(ntohs(ipp->tot_len) - (esphlen + pad));
+                       memmove((void *)(skb->data + esphlen),
+                               (void *)(skb->data), iphlen);
+                       if(skb->len < esphlen) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_error:ipsec_rcv: "
+                                      "tried to skb_pull esphlen=%d, %d available.  "
+                                      "This should never happen, please report.\n",
+                                      esphlen, (int)(skb->len));
+                               goto rcvleave;
+                       }
+                       skb_pull(skb, esphlen);
+
+                       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                                   "klips_debug:ipsec_rcv: trimming to %d.\n",
+                                   len - esphlen - pad);
+                       if(pad + esphlen <= len) {
+                               skb_trim(skb, len - esphlen - pad);
+                       } else {
+                               spin_unlock(&tdb_lock);
+                               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                                           "klips_debug:ipsec_rcv: bogus packet, size is zero or negative, dropping.\n");
+                               goto rcvleave;
+                       }
+               break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+               case IPPROTO_AH:
+                       ipp->tot_len = htons(ntohs(ipp->tot_len) - ahhlen);
+                       memmove((void *)(skb->data + ahhlen),
+                               (void *)(skb->data), iphlen);
+                       if(skb->len < ahhlen) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_error:ipsec_rcv: "
+                                      "tried to skb_pull ahhlen=%d, %d available.  "
+                                      "This should never happen, please report.\n",
+                                      ahhlen, (int)(skb->len));
+                               goto rcvleave;
+                       }
+                       skb_pull(skb, ahhlen);
+                       break;
+#endif /* CONFIG_IPSEC_AH */
+               }
+
+
+               /*
+                *      Adjust pointers
+                */
+               
+               len = skb->len;
+               dat = skb->data;
+               
+#ifdef NET_21
+/*             skb->h.ipiph=(struct iphdr *)skb->data; */
+               skb->nh.raw = skb->data;
+               skb->h.raw = skb->nh.raw + (skb->nh.iph->ihl << 2);
+               
+               memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
+#else /* NET_21 */
+               skb->h.iph=(struct iphdr *)skb->data;
+               skb->ip_hdr=(struct iphdr *)skb->data;
+               memset(skb->proto_priv, 0, sizeof(struct options));
+#endif /* NET_21 */
+               
+               ipp = (struct iphdr *)dat;
+               ipp->check = 0;
+               ipp->check = ip_fast_csum((unsigned char *)dat, iphlen >> 2);
+               
+               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                           "klips_debug:ipsec_rcv: after <%s%s%s>, SA:%s:\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+               KLIPS_IP_PRINT(debug_rcv & DB_RX_PKTRX, ipp);
+               
+               skb->protocol = htons(ETH_P_IP);
+               skb->ip_summed = 0;
+
+               tdbprev = tdbp;
+               tdbnext = tdbp->tdb_inext;
+               if(sysctl_ipsec_inbound_policy_check) {
+                       if(tdbnext) {
+                               if(tdbnext->tdb_onext != tdbp) {
+                                       spin_unlock(&tdb_lock);
+                                       KLIPS_PRINT(debug_rcv,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "SA:%s, backpolicy does not agree with fwdpolicy.\n",
+                                                   sa);
+                                       if(stats) {
+                                               stats->rx_dropped++;
+                                       }
+                                       goto rcvleave;
+                               }
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s, backpolicy agrees with fwdpolicy.\n",
+                                           sa);
+                               if(!(   (ipp->protocol == IPPROTO_AH  )
+                                       || (ipp->protocol == IPPROTO_ESP )
+                                       || (ipp->protocol == IPPROTO_IPIP)
+#ifdef CONFIG_IPSEC_IPCOMP
+                                       || (ipp->protocol == IPPROTO_COMP)
+#endif /* CONFIG_IPSEC_IPCOMP */
+                                       )) {
+                                       spin_unlock(&tdb_lock);
+                                       KLIPS_PRINT(debug_rcv,
+                                                   "klips_debug:ipsec_rcv: "
+                                                   "packet with incomplete policy dropped, last successful SA:%s.\n",
+                                                   sa);
+                                       if(stats) {
+                                               stats->rx_dropped++;
+                                       }
+                                       goto rcvleave;
+                               }
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s, Another IPSEC header to process.\n",
+                                           sa);
+                       } else {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "No tdb_inext from this SA:%s.\n",
+                                           sa);
+                       }
+               }
+
+#ifdef CONFIG_IPSEC_IPCOMP
+               /* update ipcomp ratio counters, even if no ipcomp packet is present */
+               if (tdbnext
+                 && tdbnext->tdb_said.proto == IPPROTO_COMP
+                 && ipp->protocol != IPPROTO_COMP) {
+                       tdbnext->tdb_comp_ratio_cbytes += ntohs(ipp->tot_len);
+                       tdbnext->tdb_comp_ratio_dbytes += ntohs(ipp->tot_len);
+               }
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+               tdbp->tdb_lifetime_bytes_c += len;
+               if(!tdbp->tdb_lifetime_usetime_c) {
+                       tdbp->tdb_lifetime_usetime_c = jiffies / HZ;
+               }
+               tdbp->tdb_lifetime_usetime_l = jiffies / HZ;
+               tdbp->tdb_lifetime_packets_c += 1;
+               
+       /* end decapsulation loop here */
+       } while(   (ipp->protocol == IPPROTO_ESP )
+               || (ipp->protocol == IPPROTO_AH  )
+#ifdef CONFIG_IPSEC_IPCOMP
+               || (ipp->protocol == IPPROTO_COMP)
+#endif /* CONFIG_IPSEC_IPCOMP */
+               );
+       
+#ifdef CONFIG_IPSEC_IPCOMP
+       if(tdbnext && tdbnext->tdb_said.proto == IPPROTO_COMP) {
+               tdbprev = tdbp;
+               tdbp = tdbnext;
+               tdbnext = tdbp->tdb_inext;
+       }
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+       /*
+        * XXX this needs to be locked from when it was first looked
+        * up in the decapsulation loop.  Perhaps it is better to put
+        * the IPIP decap inside the loop.
+        */
+       if(tdbnext) {
+               tdbp = tdbnext;
+               sa_len = satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+               if(ipp->protocol != IPPROTO_IPIP) {
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s, Hey!  How did this get through?  Dropped.\n",
+                                   sa);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               if(sysctl_ipsec_inbound_policy_check && (tdbnext = tdbp->tdb_inext)) {
+                       char sa2[SATOA_BUF];
+                       sa_len = satoa(tdbnext->tdb_said, 0, sa2, SATOA_BUF);
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "unexpected SA:%s after IPIP SA:%s\n",
+                                   sa2, sa);
+                       if(stats) {
+                               stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+       }
+
+#ifdef INBOUND_POLICY_CHECK_eroute
+       /*
+         Do *not* enable this without thoroughly checking spinlock issues
+         first.  In particular, nesting an eroute spinlock within a tdb
+         spinlock could result in a deadlock.  (Well, only on a SMP machine
+         under 2.4?)
+       */
+
+       /*
+        * First things first -- look us up in the erouting tables.
+        */
+       matcher.sen_len = sizeof (struct sockaddr_encap);
+       matcher.sen_family = AF_ENCAP;
+       matcher.sen_type = SENT_IP4;
+       if(ipp->protocol == IPPROTO_IPIP) {
+               struct iphdr *ipp2;
+
+               ipp2 = (struct iphdr*) (((char*)ipp) + (ipp->ihl << 2));
+               matcher.sen_ip_src.s_addr = ipp2->saddr;
+               matcher.sen_ip_dst.s_addr = ipp2->daddr;
+       } else {
+               matcher.sen_ip_src.s_addr = ipp->saddr;
+               matcher.sen_ip_dst.s_addr = ipp->daddr;
+       }
+       
+       /*
+        * The spinlock is to prevent any other process from accessing or
+        * deleting the eroute while we are using and updating it.
+        */
+       spin_lock(&eroute_lock);
+       
+       er = ipsec_findroute(&matcher);
+       if(er) {
+               policy_said = er->er_said;
+               policy_eaddr = er->er_eaddr;
+               policy_emask = er->er_emask;
+       }
+       
+       spin_unlock(&eroute_lock);
+
+       if(er) {
+               /*
+                * The spinlock is to prevent any other process from
+                * accessing or deleting the tdb while we are using and
+                * updating it.
+                */
+               /* spin_lock(&tdb_lock); */
+
+               policy_tdb = gettdb(&policy_said);
+               if (policy_tdb == NULL) {
+                       /* spin_unlock(&tdb_lock); */
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "no Tunnel Descriptor Block for SA%s: "
+                                   "incoming packet with no policy SA, dropped.\n", sa);
+                       goto rcvleave;
+               }
+               
+               sa_len = satoa(policy_said, 0, sa, SATOA_BUF);
+
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "found policy Tunnel Descriptor Block -- SA:%s\n", sa);
+               while(1) {
+                       if(policy_tdb->tdb_inext) {
+                               policy_tdb = policy_tdb->tdb_inext;
+                       } else {
+                               break;
+                       }
+               }
+               if(policy_tdb != tdbp) {
+                       /* spin_unlock(&tdb_lock); */
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   " Tunnel Descriptor Block for SA%s: "
+                                   "incoming packet with different policy SA, dropped.\n", sa);
+                       goto rcvleave;
+               }
+
+               /* spin_unlock(&tdb_lock); */
+       }
+#endif /* INBOUND_POLICY_CHECK_eroute */
+
+       if(ipp->protocol == IPPROTO_IPIP) {
+               /*
+                * XXX this needs to be locked from when it was first looked
+                * up in the decapsulation loop.  Perhaps it is better to put
+                * the IPIP decap inside the loop.
+                */
+               if(tdbp) {
+                       tdbp->tdb_lifetime_bytes_c += len;
+                       if(!tdbp->tdb_lifetime_usetime_c) {
+                               tdbp->tdb_lifetime_usetime_c = jiffies / HZ;
+                       }
+                       tdbp->tdb_lifetime_usetime_l = jiffies / HZ;
+                       tdbp->tdb_lifetime_packets_c += 1;
+               }
+               
+               if(skb->len < iphlen) {
+                       printk(KERN_WARNING "klips_debug:ipsec_rcv: "
+                              "tried to skb_pull iphlen=%d, %d available.  "
+                              "This should never happen, please report.\n",
+                              iphlen, (int)(skb->len));
+
+                       spin_unlock(&tdb_lock);
+                       goto rcvleave;
+               }
+               skb_pull(skb, iphlen);
+
+#ifdef NET_21
+               ipp = (struct iphdr *)skb->nh.raw = skb->data;
+               skb->h.raw = skb->nh.raw + (skb->nh.iph->ihl << 2);
+               
+               memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
+#else /* NET_21 */
+               ipp = skb->ip_hdr = skb->h.iph = (struct iphdr *)skb->data;
+
+               memset(skb->proto_priv, 0, sizeof(struct options));
+#endif /* NET_21 */
+
+               skb->protocol = htons(ETH_P_IP);
+               skb->ip_summed = 0;
+               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                           "klips_debug:ipsec_rcv: IPIP tunnel stripped.\n");
+               KLIPS_IP_PRINT(debug_rcv & DB_RX_PKTRX, ipp);
+       }
+
+       spin_unlock(&tdb_lock);
+
+#ifdef NET_21
+       if(stats) {
+               stats->rx_bytes += skb->len;
+       }
+       if(skb->dst) {
+               dst_release(skb->dst);
+               skb->dst = NULL;
+       }
+       skb->pkt_type = PACKET_HOST;
+       if(hard_header_len &&
+          (skb->mac.raw != (skb->data - hard_header_len)) &&
+          (hard_header_len <= skb_headroom(skb))) {
+               /* copy back original MAC header */
+               memmove(skb->data - hard_header_len, skb->mac.raw, hard_header_len);
+               skb->mac.raw = skb->data - hard_header_len;
+       }
+#endif /* NET_21 */
+
+#ifdef CONFIG_IPSEC_IPCOMP
+       if(ipp->protocol == IPPROTO_COMP) {
+               unsigned int flags = 0;
+
+               if(sysctl_ipsec_inbound_policy_check) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                               "klips_debug:ipsec_rcv: "
+                               "inbound policy checking enabled, IPCOMP follows IPIP, dropped.\n");
+                       if (stats) {
+                               stats->rx_errors++;
+                       }
+                       goto rcvleave;
+               }
+               /* XXX need a tdb for updating ratio counters XXX */
+               skb = skb_decompress(skb, NULL, &flags);
+               if (!skb || flags) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                               "klips_debug:ipsec_rcv: "
+                               "skb_decompress() returned error flags: %d, dropped.\n",
+                              flags);
+                       if (stats) {
+                               stats->rx_errors++;
+                       }
+                       goto rcvleave;
+               }
+#ifdef NET_21
+               ipp = skb->nh.iph;
+#else /* NET_21 */
+               ipp = skb->ip_hdr;
+#endif /* NET_21 */
+       }
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+#ifdef SKB_RESET_NFCT
+        nf_conntrack_put(skb->nfct);
+        skb->nfct = NULL;
+#ifdef CONFIG_NETFILTER_DEBUG
+       skb->nf_debug = 0;
+#endif /* CONFIG_NETFILTER_DEBUG */
+#endif /* SKB_RESET_NFCT */
+       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                   "klips_debug:ipsec_rcv: netif_rx() called.\n");
+       netif_rx(skb);
+
+       MOD_DEC_USE_COUNT;
+       return(0);
+       
+ rcvleave:
+       if(skb) {
+#ifdef NET_21
+                kfree_skb(skb);
+#else /* NET_21 */
+                kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+       }
+
+       MOD_DEC_USE_COUNT;
+       return(0);
+}
+
+struct inet_protocol ah_protocol =
+{
+       ipsec_rcv,                              /* AH handler */
+       NULL,                           /* TUNNEL error control */
+       0,                              /* next */
+       IPPROTO_AH,                     /* protocol ID */
+       0,                              /* copy */
+       NULL,                           /* data */
+       "AH"                            /* name */
+};
+
+struct inet_protocol esp_protocol = 
+{
+       ipsec_rcv,                      /* ESP handler          */
+       NULL,                           /* TUNNEL error control */
+       0,                              /* next */
+       IPPROTO_ESP,                    /* protocol ID */
+       0,                              /* copy */
+       NULL,                           /* data */
+       "ESP"                           /* name */
+};
+
+#if 0
+/* We probably don't want to install a pure IPCOMP protocol handler, but
+   only want to handle IPCOMP if it is encapsulated inside an ESP payload
+   (which is already handled) */
+#ifdef CONFIG_IPSEC_IPCOMP
+struct inet_protocol comp_protocol =
+{
+       ipsec_rcv,                      /* COMP handler         */
+       NULL,                           /* COMP error control   */
+       0,                              /* next */
+       IPPROTO_COMP,                   /* protocol ID */
+       0,                              /* copy */
+       NULL,                           /* data */
+       "COMP"                          /* name */
+};
+#endif /* CONFIG_IPSEC_IPCOMP */
+#endif
+
+/*
+ * $Log$
+ * Revision 1.74  2000/11/25 03:50:36  rgb
+ * Oops fix by minor re-arrangement of code to avoid accessing a freed tdb.
+ *
+ * Revision 1.73  2000/11/09 20:52:15  rgb
+ * More spinlock shuffling, locking earlier and unlocking later in rcv to
+ * include ipcomp and prevent races, renaming some tdb variables that got
+ * forgotten, moving some unlocks to include tdbs and adding a missing
+ * unlock.  Thanks to Svenning for some of these.
+ *
+ * Revision 1.72  2000/11/09 20:11:22  rgb
+ * Minor shuffles to fix non-standard kernel config option selection.
+ *
+ * Revision 1.71  2000/11/06 04:36:18  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock.
+ * Minor initial protocol check rewrite.
+ * Clean up debug printing.
+ * Clean up tdb handling on ipcomp.
+ * Fixed transport mode null pointer de-reference without ipcomp.
+ * Add Svenning's adaptive content compression.
+ * Disabled registration of ipcomp handler.
+ *
+ * Revision 1.70  2000/10/30 23:41:43  henry
+ * Hans-Joerg Hoexer's null-pointer fix
+ *
+ * Revision 1.69  2000/10/10 18:54:16  rgb
+ * Added a fix for incoming policy check with ipcomp enabled but
+ * uncompressible.
+ *
+ * Revision 1.68  2000/09/22 17:53:12  rgb
+ * Fixed ipcomp tdb pointers update for policy checking.
+ *
+ * Revision 1.67  2000/09/21 03:40:58  rgb
+ * Added more debugging to try and track down the cpi outward copy problem.
+ *
+ * Revision 1.66  2000/09/20 04:00:10  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names for
+ * debugging oopsen.
+ *
+ * Revision 1.65  2000/09/19 07:07:16  rgb
+ * Added debugging to inbound policy check for ipcomp.
+ * Added missing spin_unlocks (thanks Svenning!).
+ * Fixed misplaced tdbnext pointers causing mismatched ipip policy check.
+ * Protect ipcomp policy check following ipip decap with sysctl switch.
+ *
+ * Revision 1.64  2000/09/18 21:27:29  rgb
+ * 2.0 fixes.
+ *
+ * Revision 1.63  2000/09/18 02:35:50  rgb
+ * Added policy checking to ipcomp and re-enabled policy checking by
+ * default.
+ * Optimised satoa calls.
+ *
+ * Revision 1.62  2000/09/17 21:02:32  rgb
+ * Clean up debugging, removing slow timestamp debug code.
+ *
+ * Revision 1.61  2000/09/16 01:07:55  rgb
+ * Fixed erroneous ref from struct ipcomp to struct ipcomphdr.
+ *
+ * Revision 1.60  2000/09/15 11:37:01  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.59  2000/09/15 04:56:20  rgb
+ * Remove redundant satoa() call, reformat comment.
+ *
+ * Revision 1.58  2000/09/13 08:00:52  rgb
+ * Flick on inbound policy checking.
+ *
+ * Revision 1.57  2000/09/12 03:22:19  rgb
+ * Converted inbound_policy_check to sysctl.
+ * Re-enabled policy backcheck.
+ * Moved policy checks to top and within tdb lock.
+ *
+ * Revision 1.56  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.55  2000/08/28 18:15:46  rgb
+ * Added MB's nf-debug reset patch.
+ *
+ * Revision 1.54  2000/08/27 01:41:26  rgb
+ * More minor tweaks to the bad padding debug code.
+ *
+ * Revision 1.53  2000/08/24 16:54:16  rgb
+ * Added KLIPS_PRINTMORE macro to continue lines without KERN_INFO level
+ * info.
+ * Tidied up device reporting at the start of ipsec_rcv.
+ * Tidied up bad padding debugging and processing.
+ *
+ * Revision 1.52  2000/08/20 21:36:03  rgb
+ * Activated pfkey_expire() calls.
+ * Added a hard/soft expiry parameter to pfkey_expire().
+ * Added sanity checking to avoid propagating zero or smaller-length skbs
+ * from a bogus decryption.
+ * Re-arranged the order of soft and hard expiry to conform to RFC2367.
+ * Clean up references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.51  2000/08/18 21:23:30  rgb
+ * Improve bad padding warning so that the printk buffer doesn't get
+ * trampled.
+ *
+ * Revision 1.50  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.49  2000/07/28 13:50:53  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.48  2000/05/10 19:14:40  rgb
+ * Only check usetime against soft and hard limits if the tdb has been
+ * used.
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.47  2000/05/09 17:45:43  rgb
+ * Fix replay bitmap corruption bug upon receipt of bogus packet
+ * with correct SPI.  This was a DoS.
+ *
+ * Revision 1.46  2000/03/27 02:31:58  rgb
+ * Fixed authentication failure printout bug.
+ *
+ * Revision 1.45  2000/03/22 16:15:37  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.44  2000/03/16 08:17:24  rgb
+ * Hardcode PF_KEYv2 support.
+ * Fixed minor bug checking AH header length.
+ *
+ * Revision 1.43  2000/03/14 12:26:59  rgb
+ * Added skb->nfct support for clearing netfilter conntrack bits (MB).
+ *
+ * Revision 1.42  2000/01/26 10:04:04  rgb
+ * Fixed inbound policy checking on transport mode bug.
+ * Fixed noisy 2.0 printk arguments.
+ *
+ * Revision 1.41  2000/01/24 20:58:02  rgb
+ * Improve debugging/reporting support for (disabled) inbound
+ * policy checking.
+ *
+ * Revision 1.40  2000/01/22 23:20:10  rgb
+ * Fixed up inboud policy checking code.
+ * Cleaned out unused crud.
+ *
+ * Revision 1.39  2000/01/21 06:15:29  rgb
+ * Added sanity checks on skb_push(), skb_pull() to prevent panics.
+ * Fixed cut-and-paste debug_tunnel to debug_rcv.
+ * Added inbound policy checking code, disabled.
+ * Simplified output code by updating ipp to post-IPIP decapsulation.
+ *
+ * Revision 1.38  1999/12/22 05:08:36  rgb
+ * Checked for null skb, skb->dev, skb->data, skb->dev->name, dev->name,
+ * protocol and take appropriate action for sanity.
+ * Set ipsecdev to NULL if device could not be determined.
+ * Fixed NULL stats access bug if device could not be determined.
+ *
+ * Revision 1.37  1999/12/14 20:07:59  rgb
+ * Added a default switch case to catch bogus encalg values.
+ *
+ * Revision 1.36  1999/12/07 18:57:57  rgb
+ * Fix PFKEY symbol compile error (SADB_*) without pfkey enabled.
+ *
+ * Revision 1.35  1999/12/01 22:15:35  rgb
+ * Add checks for LARVAL and DEAD SAs.
+ * Change state of SA from MATURE to DYING when a soft lifetime is
+ * reached and print debug warning.
+ *
+ * Revision 1.34  1999/11/23 23:04:03  rgb
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.33  1999/11/19 01:10:06  rgb
+ * Enable protocol handler structures for static linking.
+ *
+ * Revision 1.32  1999/11/18 04:09:19  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.31  1999/11/17 15:53:39  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.30  1999/10/26 15:09:07  rgb
+ * Used debug compiler directives to shut up compiler for decl/assign
+ * statement.
+ *
+ * Revision 1.29  1999/10/16 18:25:37  rgb
+ * Moved SA lifetime expiry checks before packet processing.
+ * Expire SA on replay counter rollover.
+ *
+ * Revision 1.28  1999/10/16 04:23:07  rgb
+ * Add stats for replaywin_errs, replaywin_max_sequence_difference,
+ * authentication errors, encryption size errors, encryption padding
+ * errors, and time since last packet.
+ *
+ * Revision 1.27  1999/10/16 00:30:47  rgb
+ * Added SA lifetime counting.
+ *
+ * Revision 1.26  1999/10/15 22:14:37  rgb
+ * Add debugging.
+ *
+ * Revision 1.25  1999/10/08 18:37:34  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.24  1999/10/03 18:54:51  rgb
+ * Spinlock support for 2.3.xx.
+ * Don't forget to undo spinlocks on error!
+ *
+ * Revision 1.23  1999/10/01 15:44:53  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.22  1999/10/01 00:01:54  rgb
+ * Added tdb structure locking.
+ *
+ * Revision 1.21  1999/09/18 11:42:12  rgb
+ * Add Marc Boucher's tcpdump cloned packet fix.
+ *
+ * Revision 1.20  1999/09/17 23:50:25  rgb
+ * Add Marc Boucher's hard_header_len patches.
+ *
+ * Revision 1.19  1999/09/10 05:31:36  henry
+ * tentative fix for 2.0.38-crash bug (move chunk of new code into 2.2 #ifdef)
+ *
+ * Revision 1.18  1999/08/28 08:28:06  rgb
+ * Delete redundant sanity check.
+ *
+ * Revision 1.17  1999/08/28 02:00:58  rgb
+ * Add an extra sanity check for null skbs.
+ *
+ * Revision 1.16  1999/08/27 05:21:38  rgb
+ * Clean up skb->data/raw/nh/h manipulation.
+ * Add Marc Boucher's mods to aid tcpdump.
+ *
+ * Revision 1.15  1999/08/25 14:22:40  rgb
+ * Require 4-octet boundary check only for ESP.
+ *
+ * Revision 1.14  1999/08/11 08:36:44  rgb
+ * Add compiler directives to allow configuring out AH, ESP or transforms.
+ *
+ * Revision 1.13  1999/08/03 17:10:49  rgb
+ * Cosmetic fixes and clarification to debug output.
+ *
+ * Revision 1.12  1999/05/09 03:25:36  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.11  1999/05/08 21:23:57  rgb
+ * Add casting to silence the 2.2.x compile.
+ *
+ * Revision 1.10  1999/05/05 22:02:31  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.9  1999/04/29 15:18:01  rgb
+ * hange debugging to respond only to debug_rcv.
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ *
+ * Revision 1.8  1999/04/15 15:37:24  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.4.2.2  1999/04/13 20:32:45  rgb
+ * Move null skb sanity check.
+ * Silence debug a bit more when off.
+ * Use stats more effectively.
+ *
+ * Revision 1.4.2.1  1999/03/30 17:10:32  rgb
+ * Update AH+ESP bugfix.
+ *
+ * Revision 1.7  1999/04/11 00:28:59  henry
+ * GPL boilerplate
+ *
+ * Revision 1.6  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.5  1999/03/17 15:39:23  rgb
+ * Code clean-up.
+ * Bundling bug fix.
+ * ESP_NULL esphlen and IV bug fix.
+ *
+ * Revision 1.4  1999/02/17 16:51:02  rgb
+ * Ditch NET_IPIP dependancy.
+ * Decapsulate recursively for an entire bundle.
+ *
+ * Revision 1.3  1999/02/12 21:22:47  rgb
+ * Convert debugging printks to KLIPS_PRINT macro.
+ * Clean-up cruft.
+ * Process IPIP tunnels internally.
+ *
+ * Revision 1.2  1999/01/26 02:07:36  rgb
+ * Clean up debug code when switched off.
+ * Remove references to INET_GET_PROTOCOL.
+ *
+ * Revision 1.1  1999/01/21 20:29:11  rgb
+ * Converted from transform switching to algorithm switching.
+ *
+ *
+ * Id: ipsec_esp.c,v 1.16 1998/12/02 03:08:11 rgb Exp $
+ *
+ * Log: ipsec_esp.c,v $
+ * Revision 1.16  1998/12/02 03:08:11  rgb
+ * Fix incoming I/F bug in AH and clean up inconsistencies in the I/F
+ * discovery routine in both AH and ESP.
+ *
+ * Revision 1.15  1998/11/30 13:22:51  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.14  1998/11/10 05:55:37  rgb
+ * Add even more detail to 'wrong I/F' debug statement.
+ *
+ * Revision 1.13  1998/11/10 05:01:30  rgb
+ * Clean up debug output to be quiet when disabled.
+ * Add more detail to 'wrong I/F' debug statement.
+ *
+ * Revision 1.12  1998/10/31 06:39:32  rgb
+ * Fixed up comments in #endif directives.
+ * Tidied up debug printk output.
+ * Convert to addrtoa and satoa where possible.
+ *
+ * Revision 1.11  1998/10/27 00:49:30  rgb
+ * AH+ESP bundling bug has been squished.
+ * Cosmetic brace fixing in code.
+ * Newlines added before calls to ipsec_print_ip.
+ * Fix debug output function ID's.
+ *
+ * Revision 1.10  1998/10/22 06:37:22  rgb
+ * Fixed run-on error message to fit 80 columns.
+ *
+ * Revision 1.9  1998/10/20 02:41:04  rgb
+ * Fixed a replay window size sanity test bug.
+ *
+ * Revision 1.8  1998/10/19 18:55:27  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ * \n bugfix to printk debug message.
+ *
+ * Revision 1.7  1998/10/09 04:23:03  rgb
+ * Fixed possible DoS caused by invalid transform called from an ESP
+ * packet.  This should not be a problem when protocol is added to the SA.
+ * Sanity check added for null xf_input routine.  Sanity check added for null
+ * socket buffer returned from xf_input routine.
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.6  1998/07/14 15:56:04  rgb
+ * Set sdb->dev to virtual ipsec I/F.
+ *
+ * Revision 1.5  1998/06/30 18:07:46  rgb
+ * Change for ah/esp_protocol stuct visible only if module.
+ *
+ * Revision 1.4  1998/06/30 00:12:46  rgb
+ * Clean up a module compile error.
+ *
+ * Revision 1.3  1998/06/25 19:28:06  rgb
+ * Readjust premature unloading of module on packet receipt.
+ * Make protocol structure abailable to rest of kernel.
+ * Use macro for protocol number.
+ *
+ * Revision 1.2  1998/06/23 02:49:34  rgb
+ * Fix minor #include bug that prevented compiling without debugging.
+ * Added code to check for presence of IPIP protocol if an incoming packet
+ * is IPIP encapped.
+ *
+ * Revision 1.1  1998/06/18 21:27:44  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.9  1998/06/14 23:48:42  rgb
+ * Fix I/F name comparison oops bug.
+ *
+ * Revision 1.8  1998/06/11 07:20:04  rgb
+ * Stats fixed for rx_packets.
+ *
+ * Revision 1.7  1998/06/11 05:53:34  rgb
+ * Added stats for rx error and good packet reporting.
+ *
+ * Revision 1.6  1998/06/05 02:27:28  rgb
+ * Add rx_errors stats.
+ * Fix DoS bug:  skb's not being freed on dropped packets.
+ *
+ * Revision 1.5  1998/05/27 21:21:29  rgb
+ * Fix DoS potential bug.  skb was not being freed if the packet was bad.
+ *
+ * Revision 1.4  1998/05/18 22:31:37  rgb
+ * Minor change in debug output and comments.
+ *
+ * Revision 1.3  1998/04/21 21:29:02  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:19  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:05:59  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Minor cosmetic changes.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_rcv.h linux/net/ipsec/ipsec_rcv.h
--- linux-noipsec/net/ipsec/ipsec_rcv.h Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_rcv.h Thu Sep 21 06:34:21 2000
@@ -0,0 +1,161 @@
+/*
+ * 
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#define DB_RX_PKTRX    0x0001
+#define DB_RX_PKTRX2   0x0002
+#define DB_RX_DMP      0x0004
+#define DB_RX_TDB      0x0010
+#define DB_RX_XF       0x0020
+#define DB_RX_IPAD     0x0040
+#define DB_RX_INAU     0x0080
+#define DB_RX_OINFO    0x0100
+#define DB_RX_OINFO2   0x0200
+#define DB_RX_OH       0x0400
+#define DB_RX_REPLAY   0x0800
+
+#ifdef __KERNEL__
+/* struct options; */
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/config.h>      /* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+#include <freeswan.h>
+
+extern int
+ipsec_rcv(struct sk_buff *skb,
+#ifdef NET_21
+         unsigned short xlen);
+#else /* NET_21 */
+         struct device *dev,
+         struct options *opt, 
+         __u32 daddr,
+         unsigned short len,
+         __u32 saddr,
+         int redo,
+         struct inet_protocol *protocol);
+#endif /* NET_21 */
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_rcv;
+#endif /* CONFIG_IPSEC_DEBUG */
+extern int sysctl_ipsec_inbound_policy_check;
+#endif __KERNEL__
+
+/*
+ * $Log$
+ * Revision 1.11  2000/09/21 04:34:21  rgb
+ * Moved declaration of sysctl_ipsec_inbound_policy_check outside
+ * CONFIG_IPSEC_DEBUG. (MB)
+ *
+ * Revision 1.10  2000/09/18 02:36:10  rgb
+ * Exported sysctl_ipsec_inbound_policy_check for skb_decompress().
+ *
+ * Revision 1.9  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.8  1999/11/18 04:09:19  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.7  1999/05/25 01:45:37  rgb
+ * Fix version macros for 2.0.x as a module.
+ *
+ * Revision 1.6  1999/05/08 21:24:27  rgb
+ * Add includes for 2.2.x include into net/ipv4/protocol.c
+ *
+ * Revision 1.5  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.4  1999/04/11 00:28:59  henry
+ * GPL boilerplate
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1999/01/22 20:06:59  rgb
+ * Fixed cut-and-paste error from ipsec_esp.h.
+ *
+ * Revision 1.1  1999/01/21 20:29:12  rgb
+ * Converted from transform switching to algorithm switching.
+ *
+ * Log: ipsec_esp.h,v 
+ * Revision 1.4  1998/08/12 00:07:32  rgb
+ * Added data structures for new xforms: null, {,3}dessha1.
+ *
+ * Revision 1.3  1998/07/14 15:57:01  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:45  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.6  1998/06/05 02:28:08  rgb
+ * Minor comment fix.
+ *
+ * Revision 1.5  1998/05/27 22:34:00  rgb
+ * Changed structures to accomodate key separation.
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:20  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:00  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96 transform.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new ESP transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
+
+
diff -druN linux-noipsec/net/ipsec/ipsec_sha1.c linux/net/ipsec/ipsec_sha1.c
--- linux-noipsec/net/ipsec/ipsec_sha1.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_sha1.c        Mon Dec 13 14:59:13 1999
@@ -0,0 +1,201 @@
+/*
+ * RCSID $Id$
+ */
+
+/*
+ * The rest of the code is derived from sha1.c by Steve Reid, which is
+ * public domain.
+ * Minor cosmetic changes to accomodate it in the Linux kernel by ji.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/string.h>
+
+#include "ipsec_sha1.h"
+
+#if defined(rol)
+#undef rol
+#endif
+
+#define SHA1HANDSOFF
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+#ifdef __LITTLE_ENDIAN
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
+    |(rol(block->l[i],8)&0x00FF00FF))
+#else
+#define blk0(i) block->l[i]
+#endif
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+
+void SHA1Transform(__u32 state[5], __u8 buffer[64])
+{
+__u32 a, b, c, d, e;
+typedef union {
+    unsigned char c[64];
+    __u32 l[16];
+} CHAR64LONG16;
+CHAR64LONG16* block;
+#ifdef SHA1HANDSOFF
+static unsigned char workspace[64];
+    block = (CHAR64LONG16*)workspace;
+    memcpy(block, buffer, 64);
+#else
+    block = (CHAR64LONG16*)buffer;
+#endif
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+}
+
+
+/* SHA1Init - Initialize new context */
+
+void SHA1Init(SHA1_CTX* context)
+{
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+
+/* Run your data through this. */
+
+void SHA1Update(SHA1_CTX* context, unsigned char* data, __u32 len)
+{
+__u32 i, j;
+
+    j = context->count[0];
+    if ((context->count[0] += len << 3) < j)
+       context->count[1]++;
+    context->count[1] += (len>>29);
+    j = (j >> 3) & 63;
+    if ((j + len) > 63) {
+        memcpy(&context->buffer[j], data, (i = 64-j));
+        SHA1Transform(context->state, context->buffer);
+        for ( ; i + 63 < len; i += 64) {
+            SHA1Transform(context->state, &data[i]);
+        }
+        j = 0;
+    }
+    else i = 0;
+    memcpy(&context->buffer[j], &data[i], len - i);
+}
+
+
+/* Add padding and return the message digest. */
+
+void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
+{
+__u32 i, j;
+unsigned char finalcount[8];
+
+    for (i = 0; i < 8; i++) {
+        finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
+         >> ((3-(i & 3)) * 8) ) & 255);  /* Endian independent */
+    }
+    SHA1Update(context, (unsigned char *)"\200", 1);
+    while ((context->count[0] & 504) != 448) {
+        SHA1Update(context, (unsigned char *)"\0", 1);
+    }
+    SHA1Update(context, finalcount, 8);  /* Should cause a SHA1Transform() */
+    for (i = 0; i < 20; i++) {
+        digest[i] = (unsigned char)
+         ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
+    }
+    /* Wipe variables */
+    i = j = 0;
+    memset(context->buffer, 0, 64);
+    memset(context->state, 0, 20);
+    memset(context->count, 0, 8);
+    memset(&finalcount, 0, 8);
+#ifdef SHA1HANDSOFF  /* make SHA1Transform overwrite its own static vars */
+    SHA1Transform(context->state, context->buffer);
+#endif
+}
+
+
+/*
+ * $Log$
+ * Revision 1.5  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.4  1999/04/11 00:29:00  henry
+ * GPL boilerplate
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1999/01/22 06:55:50  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:04  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:06:11  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:05  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * New transform
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_sha1.h linux/net/ipsec/ipsec_sha1.h
--- linux-noipsec/net/ipsec/ipsec_sha1.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_sha1.h        Mon Dec 13 14:59:13 1999
@@ -0,0 +1,68 @@
+/*
+ * RCSID $Id$
+ */
+
+/*
+ * Here is the original comment from the distribution:
+
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+
+ * Adapted for use by the IPSEC code by John Ioannidis
+ */
+
+
+#ifndef _IPSEC_SHA1_H_
+#define _IPSEC_SHA1_H_
+
+typedef struct
+{
+       __u32   state[5];
+       __u32   count[2];
+       __u8    buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(__u32 state[5], __u8 buffer[64]);
+void SHA1Init(SHA1_CTX *context);
+void SHA1Update(SHA1_CTX *context, unsigned char *data, __u32 len);
+void SHA1Final(unsigned char digest[20], SHA1_CTX *context);
+
+ 
+#endif /* _IPSEC_SHA1_H_ */
+
+/*
+ * $Log$
+ * Revision 1.5  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.4  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:05  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:04:21  henry
+ * sources moved up from linux/net/ipsec
+ * these two include files modified not to include others except in kernel
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * New transform
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_tunnel.c linux/net/ipsec/ipsec_tunnel.c
--- linux-noipsec/net/ipsec/ipsec_tunnel.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_tunnel.c      Thu Nov  9 21:52:15 2000
@@ -0,0 +1,3065 @@
+/*
+ * IPSEC Tunneling code. Heavily based on drivers/net/new_tunnel.c
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_tunnel_c_version[] = "RCSID $Id$";
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/config.h>      /* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/tcp.h>         /* struct tcphdr */
+#include <linux/udp.h>         /* struct udphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef SPINLOCK
+ #ifdef SPINLOCK_23
+  #include <linux/spinlock.h> /* *lock* */
+ #else /* SPINLOCK_23 */
+  #include <asm/spinlock.h> /* *lock* */
+ #endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+#ifdef NET_21
+ #define MSS_HACK_             /* experimental */
+ #include <asm/uaccess.h>
+ #include <linux/in6.h>
+ #define ip_chk_addr inet_addr_type
+ #define IS_MYADDR RTN_LOCAL
+ #include <net/dst.h>
+ #undef dev_kfree_skb
+ #define dev_kfree_skb(a,b) kfree_skb(a)
+ #define proto_priv cb
+ #define PHYSDEV_TYPE
+ #define DEV_QUEUE_XMIT(skb, device, pri) {\
+       skb->dev = device; \
+       neigh_compat_output(skb); \
+       /* skb->dst->output(skb); */ \
+ }
+ #define ICMP_SEND(skb_in, type, code, info, dev) \
+       icmp_send(skb_in, type, code, htonl(info))
+ #define IP_SEND(skb, dev) \
+       ip_send(skb);
+#else /* NET_21 */
+ #define DEV_QUEUE_XMIT(skb, device, pri) {\
+       dev_queue_xmit(skb, device, pri); \
+ }
+ #define ICMP_SEND(skb_in, type, code, info, dev) \
+       icmp_send(skb_in, type, code, info, dev)
+ #define IP_SEND(skb, dev) \
+       if(ntohs(iph->tot_len) > physmtu) { \
+               ip_fragment(NULL, skb, dev, 0); \
+               dev_kfree_skb(skb, FREE_WRITE); \
+       } else { \
+               dev_queue_xmit(skb, dev, SOPRI_NORMAL); \
+       }
+#endif /* NET_21 */
+#include <asm/checksum.h>
+#include <net/icmp.h>          /* icmp_send() */
+#include <net/ip.h>
+#ifdef NETDEV_23
+#include <linux/netfilter_ipv4.h>
+#endif
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+#include "ipsec_tunnel.h"
+#include "ipsec_ipe4.h"
+#include "ipsec_ah.h"
+#include "ipsec_esp.h"
+
+#ifdef CONFIG_IPSEC_IPCOMP
+#include "ipcomp.h"
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include <net/ip.h>
+#include <linux/if_arp.h>
+#ifdef MSS_HACK
+#include <net/tcp.h>           /* TCP options */
+#endif /* MSS_HACK */
+extern void des_ede3_cbc_encrypt(caddr_t, caddr_t, int, caddr_t, caddr_t, caddr_t, caddr_t, int);
+static __u32 zeroes[64];
+
+#ifdef CONFIG_IPSEC_DEBUG
+int debug_tunnel = 0;
+int sysctl_ipsec_debug_verbose = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+int sysctl_ipsec_icmp = 0;
+int sysctl_ipsec_no_eroute_pass = 0;
+int sysctl_ipsec_opportunistic = 0;
+int sysctl_ipsec_tos = 0;
+
+#ifdef CONFIG_IPSEC_DEBUG_
+DEBUG_NO_STATIC void
+dmp(char *s, caddr_t bb, int len)
+{
+       int i;
+       unsigned char *b = bb;
+  
+       if (debug_tunnel) {
+               printk(KERN_INFO "klips_debug:ipsec_tunnel_:at %s, len=%d:", s, len);
+               for (i=0; i < len; i++) {
+                       if(!(i%16)){
+                               printk("\nklips_debug:  ");
+                       }
+                       printk(" %02x", *b++);
+               }
+               printk("\n");
+       }
+}
+#else /* CONFIG_IPSEC_DEBUG */
+#define dmp(_x, _y, _z) 
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifndef SKB_COPY_EXPAND
+/*
+ *     This is mostly skbuff.c:skb_copy().
+ */
+struct sk_buff *
+skb_copy_expand(struct sk_buff *skb, int headroom, int tailroom, int priority)
+{
+       struct sk_buff *n;
+       unsigned long offset;
+
+       /*
+        *      Do sanity checking
+        */
+       if((headroom < 0) || (tailroom < 0) || ((headroom+tailroom) < 0)) {
+               printk(KERN_WARNING "klips_error:skb_copy_expand: "
+                      "Illegal negative head,tailroom %d,%d\n",
+                      headroom, tailroom);
+               return NULL;
+       }
+       /*
+        *      Allocate the copy buffer
+        */
+        
+#ifndef NET_21
+       IS_SKB(skb);
+#endif /* !NET_21 */
+
+
+       n=alloc_skb(skb->end - skb->head + headroom + tailroom, priority);
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:skb_copy_expand: "
+                   "head=%p data=%p tail=%p end=%p end-head=%d tail-data=%d\n",
+                   skb->head,
+                   skb->data,
+                   skb->tail,
+                   skb->end,
+                   skb->end - skb->head,
+                   skb->tail - skb->data);
+
+       if(n==NULL)
+               return NULL;
+
+       /*
+        *      Shift between the two data areas in bytes
+        */
+        
+       /* offset=n->head-skb->head; */ /* moved down a few lines */
+
+       /* Set the data pointer */
+       skb_reserve(n,skb->data-skb->head+headroom);
+       /* Set the tail pointer and length */
+       if(skb_tailroom(n) < skb->len) {
+               printk(KERN_WARNING "klips_error:skb_copy_expand: "
+                      "tried to skb_put %ld, %d available.  "
+                      "This should never happen, please report.\n",
+                      (unsigned long int)skb->len, skb_tailroom(n));
+               dev_kfree_skb(n, FREE_WRITE);
+               return NULL;
+       }
+       skb_put(n,skb->len);
+
+       offset=n->head + headroom - skb->head;
+
+       /* Copy the bytes */
+       memcpy(n->head + headroom, skb->head,skb->end-skb->head);
+#ifdef NET_21
+       n->csum=skb->csum;
+       n->priority=skb->priority;
+       n->dst=dst_clone(skb->dst);
+       if(skb->nh.raw)
+               n->nh.raw=skb->nh.raw+offset;
+       n->is_clone=0;
+       atomic_set(&n->users, 1);
+       n->destructor = NULL;
+       n->security=skb->security;
+#else /* NET_21 */
+       n->link3=NULL;
+       n->when=skb->when;
+       if(skb->ip_hdr)
+               n->ip_hdr=(struct iphdr *)(((char *)skb->ip_hdr)+offset);
+       n->saddr=skb->saddr;
+       n->daddr=skb->daddr;
+       n->raddr=skb->raddr;
+       n->seq=skb->seq;
+       n->end_seq=skb->end_seq;
+       n->ack_seq=skb->ack_seq;
+       n->acked=skb->acked;
+       n->free=1;
+       n->arp=skb->arp;
+       n->tries=0;
+       n->lock=0;
+       n->users=0;
+#endif /* NET_21 */
+       n->protocol=skb->protocol;
+       n->list=NULL;
+       n->sk=NULL;
+       n->dev=skb->dev;
+       if(skb->h.raw)
+               n->h.raw=skb->h.raw+offset;
+       if(skb->mac.raw) 
+               n->mac.raw=skb->mac.raw+offset;
+       memcpy(n->proto_priv, skb->proto_priv, sizeof(skb->proto_priv));
+       n->used=skb->used;
+       n->pkt_type=skb->pkt_type;
+       n->stamp=skb->stamp;
+       
+#ifndef NET_21
+       IS_SKB(n);
+#endif /* !NET_21 */
+       return n;
+}
+#endif /* !SKB_COPY_EXPAND */
+
+#ifdef CONFIG_IPSEC_DEBUG
+void
+ipsec_print_ip(struct iphdr *ip)
+{
+       char buf[ADDRTOA_BUF];
+
+       printk(KERN_INFO "klips_debug:   IP:");
+       printk(" ihl:%d", ip->ihl*4);
+       printk(" ver:%d", ip->version);
+       printk(" tos:%d", ip->tos);
+       printk(" tlen:%d", ntohs(ip->tot_len));
+       printk(" id:%d", ip->id);
+       printk(" frag_off:%d", ip->frag_off);
+       printk(" ttl:%d", ip->ttl);
+       printk(" proto:%d", ip->protocol);
+       printk(" chk:%d", ip->check);
+       addrtoa(*((struct in_addr*)(&ip->saddr)), 0, buf, sizeof(buf));
+       printk(" saddr:%s", buf);
+       addrtoa(*((struct in_addr*)(&ip->daddr)), 0, buf, sizeof(buf));
+       printk(" daddr:%s", buf);
+       printk("\n");
+
+       if(sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               int i;
+               
+               c = ((__u8*)ip) + ip->ihl*4;
+               for(i = 0; i < ntohs(ip->tot_len) - ip->ihl*4; i++ /*, c++*/) {
+                       if(!(i % 16)) {
+                               printk(KERN_INFO "klips_debug:   @%03x:",
+                                      i);
+                       }
+                       printk(" %02x", /***/c[i]);
+                       if(!((i + 1) % 16)) {
+                               printk("\n");
+                       }
+               }
+               if(i % 16) {
+                       printk("\n");
+               }
+       }
+}
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef REAL_LOCKING_P
+/*
+ *     Locking
+ */
+ 
+DEBUG_NO_STATIC int
+ipsec_tunnel_lock(struct ipsecpriv *prv)
+{
+       unsigned long flags;
+       save_flags(flags);
+       cli();
+       /*
+        *      Lock in an interrupt may fail
+        */
+       if(prv->locked && in_interrupt()) {
+               restore_flags(flags);
+               return 0;
+       }
+       while(prv->locked)
+               sleep_on(&prv->wait_queue);
+       prv->locked=1;
+       restore_flags(flags);
+       return 1;
+}
+
+DEBUG_NO_STATIC void
+ipsec_tunnel_unlock(struct ipsecpriv *prv)
+{
+       prv->locked=0;
+       wake_up(&prv->wait_queue);
+}
+#endif /* REAL_LOCKING_P */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_open(struct device *dev)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       /*
+        * Can't open until attached.
+        */
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_open: "
+                   "dev = %s, prv->dev = %s\n",
+                   dev->name, prv->dev?prv->dev->name:"NONE");
+
+       if (prv->dev == NULL)
+               return -ENODEV;
+       
+       MOD_INC_USE_COUNT;
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_close(struct device *dev)
+{
+       MOD_DEC_USE_COUNT;
+       return 0;
+}
+
+#ifdef MSS_HACK
+/*
+ * Issues:
+ *  1) Fragments arriving in the tunnel should probably be rejected.
+ *  2) How does this affect syncookies, mss_cache, dst cache ?
+ *  3) Path MTU discovery handling needs to be reviewed.  For example,
+ *     if we receive an ICMP 'packet too big' message from an intermediate 
+ *     router specifying it's next hop MTU, our stack may process this and
+ *     adjust the MSS without taking our AH/ESP overheads into account.
+ */
+
+ 
+/*
+ * Recaclulate checksum using differences between changed datum, 
+ * borrowed from netfilter.
+ */
+DEBUG_NO_STATIC u_int16_t 
+ipsec_fast_csum(u_int32_t oldvalinv, u_int32_t newval, u_int16_t oldcheck)
+{
+       u_int32_t diffs[] = { oldvalinv, newval };
+       return csum_fold(csum_partial((char *)diffs, sizeof(diffs),
+       oldcheck^0xFFFF));
+}
+
+/*
+ * Determine effective MSS.
+ *
+ * Note that we assume that there is always an MSS option for our own
+ * SYN segments, which is mentioned in tcp_syn_build_options(), kernel 2.2.x.
+ * This could change, and we should probably parse TCP options instead.
+ *
+ */
+DEBUG_NO_STATIC u_int8_t
+ipsec_adjust_mss(struct sk_buff *skb, struct tcphdr *tcph, u_int16_t mtu)
+{
+       u_int16_t oldmss, newmss;
+       u_int32_t *mssp;
+       struct sock *sk = skb->sk;
+       
+       newmss = tcp_sync_mss(sk, mtu);
+       printk(KERN_INFO "klips: setting mss to %u\n", newmss);
+       mssp = (u_int32_t *)tcph + sizeof(struct tcphdr) / sizeof(u_int32_t);
+       oldmss = ntohl(*mssp) & 0x0000FFFF;
+       *mssp = htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) | newmss);
+       tcph->check = ipsec_fast_csum(htons(~oldmss), 
+                                     htons(newmss), tcph->check);
+       return 1;
+}
+#endif /* MSS_HACK */
+                                                        
+#ifdef NETDEV_23
+static inline int ipsec_tunnel_xmit2(struct sk_buff *skb)
+{
+       return ip_send(skb);
+}
+#endif
+
+/*
+ *     This function assumes it is being called from dev_queue_xmit()
+ *     and that skb is filled properly by that function.
+ */
+
+int
+ipsec_tunnel_start_xmit(struct sk_buff *skb, struct device *dev)
+{
+       struct ipsecpriv *prv;          /* Our device' private space */
+       struct sk_buff *oskb = NULL;    /* Original skb pointer */
+       struct net_device_stats *stats; /* This device's statistics */
+       struct iphdr  *iph;             /* Our new IP header */
+       __u32   newdst;                 /* The other SG's IP address */
+       __u32   orgdst;                 /* Original IP destination address */
+       __u32   orgedst;                /* 1st SG's IP address */
+       __u32   newsrc;                 /* The new source SG's IP address */
+       __u32   orgsrc;                 /* Original IP source address */
+       __u32   innersrc;               /* Innermost IP source address */
+       int     iphlen;                 /* IP header length */
+       int     pyldsz;                 /* upper protocol payload size */
+       int     headroom;
+       int     tailroom;
+       int     max_headroom = 0;       /* The extra header space needed */
+       int     max_tailroom = 0;       /* The extra stuffing needed */
+       int     ll_headroom;            /* The extra link layer hard_header space needed */
+       int     tot_headroom = 0;       /* The total header space needed */
+       int     tot_tailroom = 0;       /* The totalstuffing needed */
+       __u8    *saved_header = NULL;   /* saved copy of the hard header */
+       int i;
+
+       struct sockaddr_encap matcher;  /* eroute search key */
+       struct eroute *er;
+       struct tdb *tdbp, *tdbq;        /* Tunnel Descriptor Block pointers */
+       char sa[SATOA_BUF];
+       size_t sa_len;
+       int hard_header_stripped = 0;   /* has the hard header been removed yet? */
+       int hard_header_len = 0;
+       struct device *physdev;
+/*     struct device *virtdev; */
+       short physmtu;
+       short mtudiff;
+#ifdef NET_21
+       struct rtable *rt = NULL;
+#endif /* NET_21 */
+       struct sa_id outgoing_said;
+
+       /*
+        *      Return if there is nothing to do.  (Does this ever happen?) XXX
+        */
+       if (skb == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_tunnel_start_xmit: "
+                           "Nothing to do!\n" );
+               goto cleanup;
+       }
+       if (dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_tunnel_start_xmit: "
+                           "No device associated with skb!\n" );
+               goto cleanup;
+       }
+
+       prv = dev->priv;
+       if (prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_tunnel_start_xmit: "
+                           "Device has no private structure!\n" );
+               goto cleanup;
+       }
+
+       physdev = prv->dev;
+       if (physdev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_tunnel_start_xmit: "
+                           "Device is not attached to physical device!\n" );
+               goto cleanup;
+       }
+
+       physmtu = physdev->mtu;
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+#ifdef NET_21
+       /* if skb was cloned (most likely due to a packet sniffer such as
+          tcpdump being momentarily attached to the interface), make
+          a copy of our own to modify */
+       if(skb_cloned(skb)) {
+               if ((skb = skb_cow(skb, skb_headroom(skb))) == NULL) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_error:ipsec_tunnel_start_xmit: "
+                                   "skb_cow failed to allocate buffer, dropping.\n" );
+                       goto cleanup;
+               }
+       }
+#endif /* NET_21 */
+
+#ifdef NET_21
+       iph = skb->nh.iph;
+#else /* NET_21 */
+       iph = skb->ip_hdr;
+#endif /* NET_21 */
+
+       /* physdev->hard_header_len is unreliable and should not be used */
+       hard_header_len = (unsigned char *)iph - skb->data;
+
+       if(hard_header_len < 0) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_tunnel_start_xmit: "
+                           "Negative hard_header_len (%d)?!\n", hard_header_len);
+               stats->tx_dropped++;
+               goto cleanup;
+       }
+
+       if(hard_header_len == 0) { /* no hard header present */
+               hard_header_stripped = 1;
+       }
+
+#ifdef CONFIG_IPSEC_DEBUG
+       if (debug_tunnel & DB_TN_XMIT) {
+               int i;
+               char c;
+               
+               printk(KERN_INFO "klips_debug:ipsec_tunnel_start_xmit: "
+                      ">>> skb->len=%ld hard_header_len:%d",
+                      (unsigned long int)skb->len, hard_header_len);
+               c = ' ';
+               for (i=0; i < hard_header_len; i++) {
+                       printk("%c%02x", c, skb->data[i]);
+                       c = ':';
+               }
+               printk(" \n");
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       KLIPS_IP_PRINT(debug_tunnel & DB_TN_XMIT, iph);
+
+       /*
+        * Sanity checks
+        */
+
+       if ((iph->ihl << 2) != sizeof (struct iphdr)) {
+               KLIPS_PRINT(debug_tunnel,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "cannot process IP header options yet.  "
+                           "May be mal-formed packet.\n"); /* XXX */
+               stats->tx_dropped++;
+               goto cleanup;
+       }
+       
+#ifndef NET_21
+       /* TTL decrement code (on the way out!) borrowed from ip_forward.c */
+       if(0) {
+               unsigned long checksum = iph->check;
+               iph->ttl--;
+       /*
+        *      Re-compute the IP header checksum.
+        *      This is efficient. We know what has happened to the header
+        *      and can thus adjust the checksum as Phil Karn does in KA9Q
+        *      except we do this in "network byte order".
+        */
+               checksum += htons(0x0100);
+               /* carry overflow? */
+               checksum += checksum >> 16;
+               iph->check = checksum;
+       }
+       if (iph->ttl <= 0) {
+               /* Tell the sender its packet died... */
+               ICMP_SEND(skb, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL, 0, physdev);
+
+               KLIPS_PRINT(debug_tunnel, "klips_debug:ipsec_tunnel_start_xmit: "
+                           "TTL=0, too many hops!\n");
+               stats->tx_dropped++;
+               goto cleanup;
+       }
+#endif /* !NET_21 */
+
+       /*
+        * First things first -- look us up in the erouting tables.
+        */
+       matcher.sen_len = sizeof (struct sockaddr_encap);
+       matcher.sen_family = AF_ENCAP;
+       matcher.sen_type = SENT_IP4;
+       matcher.sen_ip_src.s_addr = iph->saddr;
+       matcher.sen_ip_dst.s_addr = iph->daddr;
+
+       /*
+        * The spinlock is to prevent any other process from accessing or deleting
+        * the eroute while we are using and updating it.
+        */
+       spin_lock(&eroute_lock);
+       
+       er = ipsec_findroute(&matcher);
+       if(er) {
+               outgoing_said = er->er_said;
+       }
+
+       spin_unlock(&eroute_lock);
+
+       /*
+        * Quick cheat for now...are we udp/500? If so, let it through
+        * without interference since it is most likely an IKE packet.
+        */
+       if((ip_chk_addr((unsigned long)iph->saddr) == IS_MYADDR)
+          && ((!er) || (iph->daddr == outgoing_said.dst.s_addr))) {
+               if(iph->protocol == IPPROTO_UDP) {
+                       struct udphdr *udph = (struct udphdr*)((caddr_t)iph + (iph->ihl << 2));
+                       if(ntohs(udph->dest) == 500) {
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "udp/500 IKE packet, sending unprocessed, "
+                                           "calling dev_queue_xmit\n"); 
+#if 1
+                               goto bypass;
+#else
+                               DEV_QUEUE_XMIT(skb, physdev, SOPRI_NORMAL);
+                               /* IP_SEND(skb, physdev); */
+                               skb = NULL;
+                               goto cleanup;
+#endif
+                       }
+               }
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_tunnel_start_xmit: "
+                   "Original head,tailroom: %d,%d\n",
+                   skb_headroom(skb), skb_tailroom(skb));
+
+       innersrc = iph->saddr;
+       /* start encapsulation loop here XXX */
+       do {
+               newdst = orgdst = iph->daddr;
+               newsrc = orgsrc = iph->saddr;
+               orgedst = outgoing_said.dst.s_addr;
+               iphlen = iph->ihl << 2;
+               pyldsz = ntohs(iph->tot_len) - iphlen;
+               max_headroom = max_tailroom = 0;
+               
+               if (er == NULL) {
+                       if(sysctl_ipsec_no_eroute_pass) {
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "no eroute!: calling dev_queue_xmit\n");
+#if 1
+                               goto bypass;
+#else
+                               DEV_QUEUE_XMIT(skb, physdev, SOPRI_NORMAL);
+                               /* IP_SEND(skb, physdev); */
+                               skb = NULL;
+#endif
+                       } else {
+                               if(sysctl_ipsec_opportunistic && !er) {
+                                       struct tdb tdb;
+                                       struct sockaddr_in src, dst;
+#ifdef CONFIG_IPSEC_DEBUG
+                                       char buf[ADDRTOA_BUF];
+#endif /* CONFIG_IPSEC_DEBUG */
+                                       
+                                       tdb.tdb_said.proto = iph->protocol;
+                                       src.sin_family = AF_INET;
+                                       dst.sin_family = AF_INET;
+                                       src.sin_addr.s_addr = iph->saddr;
+                                       dst.sin_addr.s_addr = iph->daddr;
+                                       src.sin_port = 
+                                               (iph->protocol == IPPROTO_UDP
+                                                ? ((struct udphdr*) (((caddr_t)iph) + (iph->ihl << 2)))->source
+                                                : (iph->protocol == IPPROTO_TCP
+                                                   ? ((struct tcphdr*)((caddr_t)iph + (iph->ihl << 2)))->source
+                                                   : 0));
+                                       dst.sin_port = 
+                                               (iph->protocol == IPPROTO_UDP
+                                                ? ((struct udphdr*) (((caddr_t)iph) + (iph->ihl << 2)))->dest
+                                                : (iph->protocol == IPPROTO_TCP
+                                                   ? ((struct tcphdr*)((caddr_t)iph + (iph->ihl << 2)))->dest
+                                                   : 0));
+                                       for(i = 0;
+                                           i < sizeof(struct sockaddr_in)
+                                                   - offsetof(struct sockaddr_in, sin_zero);
+                                           i++) {
+                                               src.sin_zero[i] = 0;
+                                               dst.sin_zero[i] = 0;
+                                       }
+                                       
+                                       tdb.tdb_addr_s = (struct sockaddr*)(&src);
+                                       tdb.tdb_addr_d = (struct sockaddr*)(&dst);
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                                   "SADB_ACQUIRE sent with src=%s:%d, dst=%s:%d, proto=%d.\n",
+                                                   addrtoa(((struct sockaddr_in*)(tdb.tdb_addr_s))->sin_addr, 0, buf, sizeof(buf)) <= ADDRTOA_BUF ? buf : "BAD_ADDR",
+                                                   ((struct sockaddr_in*)(tdb.tdb_addr_s))->sin_port,
+                                                   addrtoa(((struct sockaddr_in*)(tdb.tdb_addr_d))->sin_addr, 0, buf, sizeof(buf)) <= ADDRTOA_BUF ? buf : "BAD_ADDR",
+                                                   ((struct sockaddr_in*)(tdb.tdb_addr_d))->sin_port,
+                                                   tdb.tdb_said.proto);
+                                       pfkey_acquire(&tdb);
+                               } else {
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                                   "no eroute!: dropping.\n");
+                                       stats->tx_dropped++;
+                               }
+                       }
+                       goto cleanup;
+               }
+               
+               /*
+                 If the packet matches an eroute with an SA.proto of IP
+                 tunnelling and 
+                 an SA.spi of '0', then forward the packet unprotected.
+                 XXX -- This should eventually go into an SPD. 
+               */
+               if((outgoing_said.proto == IPPROTO_IPIP) && (outgoing_said.spi == 0)) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "passthrough eroute, packet sent.\n");
+#if 1
+                       goto bypass;
+#else
+                       DEV_QUEUE_XMIT(skb, physdev, SOPRI_NORMAL);
+                       /* IP_SEND(skb, physdev); */
+                       skb = NULL;
+                       goto cleanup;
+#endif
+               }
+               
+               /*
+                * The spinlock is to prevent any other process from accessing or deleting
+                * the tdb while we are using and updating it.
+                */
+               spin_lock(&tdb_lock);
+
+               tdbp = gettdb(&outgoing_said);
+               sa_len = satoa(outgoing_said, 0, sa, SATOA_BUF);
+
+               if (tdbp == NULL) {
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "no Tunnel Descriptor Block for SA%s: "
+                                   "outgoing packet with no SA, dropped.\n", sa);
+                       stats->tx_dropped++;
+                       goto cleanup;
+               }
+               
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "found Tunnel Descriptor Block -- SA:<%s%s%s> %s\n",
+                           TDB_XFORM_NAME(tdbp), sa);
+               
+               /*
+                * How much headroom do we need to be able to apply
+                * all the grouped transforms?
+                */
+               tdbq = tdbp;    /* save the head of the tdb chain */
+               while (tdbp)    {
+                       sa_len = satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+
+                       /* If it is in larval state, drop the packet, we cannot process yet. */
+                       if(tdbp->tdb_state == SADB_SASTATE_LARVAL) {
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "TDB in larval state for SA:<%s%s%s> %s, "
+                                           "cannot be used yet, dropping packet.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+
+                       if(tdbp->tdb_state == SADB_SASTATE_DEAD) {
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "TDB in dead state for SA:<%s%s%s> %s, "
+                                           "can no longer be used, dropping packet.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+
+                       /* If the replay window counter == -1, expire SA, it will roll */
+                       if(tdbp->tdb_replaywin && tdbp->tdb_replaywin_lastseq == -1) {
+                               pfkey_expire(tdbp, 1);
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "replay window counter rolled for SA:<%s%s%s> %s, "
+                                           "packet dropped, expiring SA.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                               deltdbchain(tdbp);
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+
+                       /* If any of the lifetime counters have overflowed, expire the SA(s). */
+                       if(tdbp->tdb_lifetime_bytes_h &&
+                          (tdbp->tdb_lifetime_bytes_c > tdbp->tdb_lifetime_bytes_h)) {
+                               pfkey_expire(tdbp, 1);
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "hard bytes lifetime of SA:<%s%s%s> %s has been reached, "
+                                           "SA expired, outgoing packet dropped.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                               deltdbchain(tdbp);
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       if(tdbp->tdb_lifetime_bytes_s &&
+                          (tdbp->tdb_lifetime_bytes_c > tdbp->tdb_lifetime_bytes_s)) {
+                               pfkey_expire(tdbp, 0);
+                               tdbp->tdb_state = SADB_SASTATE_DYING;
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "soft bytes lifetime of SA:<%s%s%s> %s has been reached, "
+                                           "SA expiring, soft expire message sent up, "
+                                           "outgoing packet still processed.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                       }
+
+                       if(tdbp->tdb_lifetime_addtime_h &&
+                          ((jiffies / HZ) - tdbp->tdb_lifetime_addtime_c >
+                           tdbp->tdb_lifetime_addtime_h)) {
+                               pfkey_expire(tdbp, 1);
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "hard addtime lifetime of SA:<%s%s%s> %s has been reached, "
+                                           "SA expired, outgoing packet dropped.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                               deltdbchain(tdbp);
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       if(tdbp->tdb_lifetime_addtime_s &&
+                          ((jiffies / HZ) - tdbp->tdb_lifetime_addtime_c >
+                           tdbp->tdb_lifetime_addtime_s)) {
+                               pfkey_expire(tdbp, 0);
+                               tdbp->tdb_state = SADB_SASTATE_DYING;
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "soft addtime lifetime of SA:<%s%s%s> %s has been reached, "
+                                           "SA expiring, soft expire message sent up, "
+                                           "outgoing packet still processed.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                       }
+
+                       if(tdbp->tdb_lifetime_usetime_c) {
+                               if(tdbp->tdb_lifetime_usetime_h &&
+                                  ((jiffies / HZ) - tdbp->tdb_lifetime_usetime_c >
+                                   tdbp->tdb_lifetime_usetime_h)) {
+                                       pfkey_expire(tdbp, 1);
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                                   "hard usetime lifetime of SA:<%s%s%s> %s has been reached, "
+                                                   "SA expired, outgoing packet dropped.\n",
+                                                   TDB_XFORM_NAME(tdbp), sa);
+                                       deltdbchain(tdbp);
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                               if(tdbp->tdb_lifetime_usetime_s &&
+                                  ((jiffies / HZ) - tdbp->tdb_lifetime_usetime_c >
+                                   tdbp->tdb_lifetime_usetime_s)) {
+                                       pfkey_expire(tdbp, 0);
+                                       tdbp->tdb_state = SADB_SASTATE_DYING;
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                                   "soft usetime lifetime of SA:<%s%s%s> %s has been reached, "
+                                                   "SA expiring, soft expire message sent up, "
+                                                   "outgoing packet still processed.\n",
+                                                   TDB_XFORM_NAME(tdbp), sa);
+                               }
+                       }
+
+                       if(tdbp->tdb_lifetime_packets_h &&
+                          (tdbp->tdb_lifetime_packets_c > tdbp->tdb_lifetime_packets_h)) {
+                               pfkey_expire(tdbp, 1);
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "hard packets lifetime of SA:<%s%s%s> %s has been reached, "
+                                           "SA expired, outgoing packet dropped.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                               deltdbchain(tdbp);
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       if(tdbp->tdb_lifetime_packets_s &&
+                          (tdbp->tdb_lifetime_packets_c > tdbp->tdb_lifetime_packets_s)) {
+                               pfkey_expire(tdbp, 0);
+                               tdbp->tdb_state = SADB_SASTATE_DYING;
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_tunnel_start_xmit: "
+                                           "soft packets lifetime of SA:<%s%s%s> %s has been reached, "
+                                           "SA expiring, soft expire message sent up, "
+                                           "outgoing packet still processed.\n",
+                                           TDB_XFORM_NAME(tdbp), sa);
+                       }
+
+                       headroom = tailroom = 0;
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "calling room for <%s%s%s>, SA:%s\n", 
+                                   TDB_XFORM_NAME(tdbp), sa);
+                       switch(tdbp->tdb_said.proto) {
+#ifdef CONFIG_IPSEC_AH
+                       case IPPROTO_AH:
+                               headroom += sizeof(struct ah);
+                               break;
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_ESP
+                       case IPPROTO_ESP:
+                               switch(tdbp->tdb_encalg) {
+#ifdef CONFIG_IPSEC_ENC_3DES
+                               case ESP_3DES:
+                                       headroom += sizeof(struct esp);
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_3DES */
+#ifdef CONFIG_IPSEC_ENC_NULL
+                               case ESP_NULL:
+                                       headroom += offsetof(struct esp, esp_iv);
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_NULL */
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                               switch(tdbp->tdb_authalg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                               case AH_MD5:
+                                       tailroom += AHHMAC_HASHLEN;
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                               case AH_SHA:
+                                       tailroom += AHHMAC_HASHLEN;
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                               case AH_NONE:
+                                       break;
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }                       
+                               tailroom += ((8 - ((pyldsz + 2 * sizeof(unsigned char)) % 8)) % 8) + 2;
+                               break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_IPIP
+                       case IPPROTO_IPIP:
+                               headroom += sizeof(struct iphdr);
+                               break;
+#endif /* !CONFIG_IPSEC_IPIP */
+                       case IPPROTO_COMP:
+#ifdef CONFIG_IPSEC_IPCOMP
+                               /*
+                                 We can't predict how much the packet will
+                                 shrink without doing the actual compression.
+                                 We could do it here, if we were the first
+                                 encapsulation in the chain.  That might save
+                                 us a skb_copy_expand, since we might fit
+                                 into the existing skb then.  However, this
+                                 would be a bit unclean (and this hack has
+                                 bit us once), so we better not do it. After
+                                 all, the skb_copy_expand is cheap in
+                                 comparison to the actual compression.
+                                 At least we know the packet will not grow.
+                               */
+                               break;
+#endif /* CONFIG_IPSEC_IPCOMP */
+                       default:
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       tdbp = tdbp->tdb_onext;
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "Required head,tailroom: %d,%d\n", 
+                                   headroom, tailroom);
+                       max_headroom += headroom;
+                       max_tailroom += tailroom;
+                       pyldsz += (headroom + tailroom);
+               }
+               tdbp = tdbq;    /* restore the head of the tdb chain */
+               
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "existing head,tailroom: %d,%d "
+                           "before applying xforms with head,tailroom: %d,%d .\n",
+                           skb_headroom(skb), skb_tailroom(skb),
+                           max_headroom, max_tailroom);
+               
+               tot_headroom += max_headroom;
+               tot_tailroom += max_tailroom;
+               
+               mtudiff = prv->mtu + tot_headroom + tot_tailroom - physmtu;
+
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_tunnel_start_xmit: mtu:%d physmtu:%d "
+                           "tothr:%d tottr:%d mtudiff:%d ippkttotlen:%d\n",
+                           prv->mtu, physmtu,
+                           tot_headroom, tot_tailroom, mtudiff, ntohs(iph->tot_len));
+               if(mtudiff > 0) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_info:ipsec_tunnel_start_xmit: "
+                                   "dev %s mtu of %d decreased by %d\n",
+                                   dev->name,
+                                   prv->mtu,
+                                   prv->mtu - (physmtu - tot_headroom - tot_tailroom));
+                       prv->mtu = physmtu - (tot_headroom + tot_tailroom + 7); /* add some slop? */
+#ifdef NET_21
+#if 0
+                       skb->dst->pmtu = prv->mtu; /* RGB */
+#endif /* 0 */
+#else /* NET_21 */
+#if 0
+                       dev->mtu = prv->mtu; /* RGB */
+#endif /* 0 */
+#endif /* NET_21 */
+               }
+               
+#ifdef MSS_HACK
+               /*
+                * If this is a transport mode TCP packet with
+                * SYN set, determine an effective MSS based on 
+                * AH/ESP overheads determined above.
+                */
+               if (iph->protocol == IPPROTO_TCP 
+                   && outgoing_said.proto != IPPROTO_IPIP) {
+                       struct tcphdr *tcph = skb->h.th;
+                       if (tcph->syn && !tcph->ack) {
+                               if(!ipsec_adjust_mss(skb, tcph, prv->mtu)) {
+                                       spin_unlock(&tdb_lock);
+                                       printk(KERN_WARNING "klips: "
+                                              "ipsec_adjust_mss() failed\n");
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                       }
+               }
+#endif /* MSS_HACK */
+
+               if(!hard_header_stripped) {
+                       if((saved_header = kmalloc(hard_header_len, GFP_ATOMIC)) == NULL) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_debug:ipsec_tunnel_start_xmit: Failed, "
+                                      "tried to allocate %d bytes for temp hard_header.\n", 
+                                      hard_header_len);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       for (i = 0; i < hard_header_len; i++) {
+                               saved_header[i] = skb->data[i];
+                       }
+                       if(skb->len < hard_header_len) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                                      "tried to skb_pull hhlen=%d, %d available.  "
+                                      "This should never happen, please report.\n",
+                                      hard_header_len, (int)(skb->len));
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       skb_pull(skb, hard_header_len);
+                       hard_header_stripped = 1;
+                       
+/*                     iph = (struct iphdr *) (skb->data); */
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "head,tailroom: %d,%d after hard_header stripped.\n",
+                                   skb_headroom(skb), skb_tailroom(skb));
+                       KLIPS_IP_PRINT(debug_tunnel & DB_TN_CROUT, iph);
+               } else {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "hard header already stripped.\n");
+               }
+               
+               ll_headroom = (hard_header_len + 15) & ~15;
+
+               if ((skb_headroom(skb) >= max_headroom + 2 * ll_headroom) && 
+                   (skb_tailroom(skb) >= max_tailroom)
+#ifndef NET_21
+                       && skb->free
+#endif /* !NET_21 */
+                       ) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "data fits in existing skb\n");
+               } else {
+                       struct sk_buff* tskb = skb;
+
+                       if(!oskb) {
+                               oskb = skb;
+                       }
+
+                       tskb = skb_copy_expand(skb,
+                       /* The reason for 2 * link layer length here still baffles me...RGB */
+                                              max_headroom + 2 * ll_headroom,
+                                              max_tailroom,
+                                              GFP_ATOMIC);
+#ifdef NET_21
+                       if(tskb && skb->sk) {
+                               skb_set_owner_w(tskb, skb->sk);
+                       }
+#endif /* NET_21 */
+                       if(!(skb == oskb) ) {
+                               dev_kfree_skb(skb, FREE_WRITE);
+                       }
+                       skb = tskb;
+                       if (!skb) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_debug:ipsec_tunnel_start_xmit: Failed, "
+                                      "tried to allocate %d head and %d tailroom\n", 
+                                      max_headroom, max_tailroom);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "head,tailroom: %d,%d after allocation\n",
+                                   skb_headroom(skb), skb_tailroom(skb));
+               }
+               
+               /*
+                * Apply grouped transforms to packet
+                */
+               while (tdbp) {
+#ifdef CONFIG_IPSEC_ESP
+                       struct esp *espp;
+                       __u32 iv[2];
+                       unsigned char *idat, *pad;
+                       int authlen = 0, padlen = 0, i;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+                       struct iphdr ipo;
+                       struct ah *ahp;
+#endif /* CONFIG_IPSEC_AH */
+#if defined(CONFIG_IPSEC_AUTH_HMAC_MD5) || defined(CONFIG_IPSEC_AUTH_HMAC_SHA1)
+                       union {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                               MD5_CTX md5;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                               SHA1_CTX sha1;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                       } tctx;
+                       __u8 hash[AH_AMAX];
+#endif /* defined(CONFIG_IPSEC_AUTH_HMAC_MD5) || defined(CONFIG_IPSEC_AUTH_HMAC_SHA1) */
+                       int headroom = 0, tailroom = 0, ilen = 0, len = 0;
+                       unsigned char *dat;
+                       
+                       iphlen = iph->ihl << 2;
+                       pyldsz = ntohs(iph->tot_len) - iphlen;
+                       sa_len = satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+                       KLIPS_PRINT(debug_tunnel & DB_TN_OXFS,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "calling output for <%s%s%s>, SA:%s\n", 
+                                   TDB_XFORM_NAME(tdbp), sa);
+                       
+                       switch(tdbp->tdb_said.proto) {
+#ifdef CONFIG_IPSEC_AH
+                       case IPPROTO_AH:
+                               headroom += sizeof(struct ah);
+                               break;
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_ESP
+                       case IPPROTO_ESP:
+                               switch(tdbp->tdb_encalg) {
+#ifdef CONFIG_IPSEC_ENC_3DES
+                               case ESP_3DES:
+                                       headroom += sizeof(struct esp);
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_3DES */
+#ifdef CONFIG_IPSEC_ENC_NULL
+                               case ESP_NULL:
+                                       headroom += offsetof(struct esp, esp_iv);
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_NULL */
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                               switch(tdbp->tdb_authalg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                               case AH_MD5:
+                                       authlen = AHHMAC_HASHLEN;
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                               case AH_SHA:
+                                       authlen = AHHMAC_HASHLEN;
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                               case AH_NONE:
+                                       break;
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }               
+                               tailroom += ((8 - ((pyldsz + 2 * sizeof(unsigned char)) % 8)) % 8) + 2;
+                               tailroom += authlen;
+                               break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_IPIP
+                       case IPPROTO_IPIP:
+                               headroom += sizeof(struct iphdr);
+                               break;
+#endif /* !CONFIG_IPSEC_IPIP */
+#ifdef CONFIG_IPSEC_IPCOMP
+                       case IPPROTO_COMP:
+                               break;
+#endif /* CONFIG_IPSEC_IPCOMP */
+                       default:
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "pushing %d bytes, putting %d, proto %d.\n", 
+                                   headroom, tailroom, tdbp->tdb_said.proto);
+                       if(skb_headroom(skb) < headroom) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                                      "tried to skb_push headroom=%d, %d available.  "
+                                      "This should never happen, please report.\n",
+                                      headroom, skb_headroom(skb));
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       dat = skb_push(skb, headroom);
+                       ilen = skb->len - tailroom;
+                       if(skb_tailroom(skb) < tailroom) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                                      "tried to skb_put %d, %d available.  "
+                                      "This should never happen, please report.\n",
+                                      tailroom, skb_tailroom(skb));
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       skb_put(skb, tailroom);
+                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "head,tailroom: %d,%d before xform.\n",
+                                   skb_headroom(skb), skb_tailroom(skb));
+                       len = skb->len;
+                       if(len > 0xfff0) {
+                               spin_unlock(&tdb_lock);
+                               printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                                      "tot_len (%d) > 65520.  "
+                                      "This should never happen, please report.\n",
+                                      len);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       memmove((void *)dat, (void *)(dat + headroom), iphlen);
+                       iph = (struct iphdr *)dat;
+                       iph->tot_len = htons(skb->len);
+                       
+                       switch(tdbp->tdb_said.proto) {
+#ifdef CONFIG_IPSEC_ESP
+                       case IPPROTO_ESP:
+                               espp = (struct esp *)(dat + iphlen);
+                               espp->esp_spi = tdbp->tdb_said.spi;
+                               espp->esp_rpl = htonl(++(tdbp->tdb_replaywin_lastseq));
+                               
+                               switch(tdbp->tdb_encalg) {
+#if defined(CONFIG_IPSEC_ENC_3DES)
+#ifdef CONFIG_IPSEC_ENC_3DES
+                               case ESP_3DES:
+#endif /* CONFIG_IPSEC_ENC_3DES */
+                                       iv[0] = *((__u32*)&(espp->esp_iv)    ) =
+                                               ((__u32*)(tdbp->tdb_iv))[0];
+                                       iv[1] = *((__u32*)&(espp->esp_iv) + 1) =
+                                               ((__u32*)(tdbp->tdb_iv))[1];
+                                       break;
+#endif /* defined(CONFIG_IPSEC_ENC_3DES) */
+#ifdef CONFIG_IPSEC_ENC_NULL
+                               case ESP_NULL:
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_NULL */
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                               
+                               idat = dat + iphlen + headroom;
+                               ilen = len - (iphlen + headroom + authlen);
+                               
+                               /* Self-describing padding */
+                               pad = &dat[len - tailroom];
+                               padlen = tailroom - 2 - authlen;
+                               for (i = 0; i < padlen; i++) {
+                                       pad[i] = i + 1; 
+                               }
+                               dat[len - authlen - 2] = padlen;
+                               
+                               dat[len - authlen - 1] = iph->protocol;
+                               iph->protocol = IPPROTO_ESP;
+                               
+                               switch(tdbp->tdb_encalg) {
+#ifdef CONFIG_IPSEC_ENC_3DES
+                               case ESP_3DES:
+                                       des_ede3_cbc_encrypt(idat, idat, ilen,
+                                                            (caddr_t)(&((struct des_eks*)(tdbp->tdb_key_e))[0]),
+                                                            (caddr_t)(&((struct des_eks*)(tdbp->tdb_key_e))[1]),
+                                                            (caddr_t)(&((struct des_eks*)(tdbp->tdb_key_e))[2]),
+                                                            (caddr_t)iv, 1);
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_3DES */
+#ifdef CONFIG_IPSEC_ENC_NULL
+                               case ESP_NULL:
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_NULL */
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                               
+                               switch(tdbp->tdb_encalg) {
+#if defined(CONFIG_IPSEC_ENC_3DES)
+#ifdef CONFIG_IPSEC_ENC_3DES
+                               case ESP_3DES:
+#endif /* CONFIG_IPSEC_ENC_3DES */
+                                       /* XXX update IV with the last 8 octets of the encryption */
+                                       ((__u32*)(tdbp->tdb_iv))[0] =
+                                               ((__u32 *)(idat))[(ilen >> 2) - 2];
+                                       ((__u32*)(tdbp->tdb_iv))[1] =
+                                               ((__u32 *)(idat))[(ilen >> 2) - 1];
+                                       break;
+#endif /* defined(CONFIG_IPSEC_ENC_3DES) */
+#ifdef CONFIG_IPSEC_ENC_NULL
+                               case ESP_NULL:
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_NULL */
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+                               
+                               switch(tdbp->tdb_authalg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                               case AH_MD5:
+                                       dmp("espp", (char*)espp, len - iphlen - authlen);
+                                       tctx.md5 = ((struct md5_ctx*)(tdbp->tdb_key_a))->ictx;
+                                       dmp("ictx", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5, (caddr_t)espp, len - iphlen - authlen);
+                                       dmp("ictx+dat", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Final(hash, &tctx.md5);
+                                       dmp("ictx hash", (char*)&hash, sizeof(hash));
+                                       tctx.md5 = ((struct md5_ctx*)(tdbp->tdb_key_a))->octx;
+                                       dmp("octx", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5, hash, AHMD596_ALEN);
+                                       dmp("octx+hash", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Final(hash, &tctx.md5);
+                                       dmp("octx hash", (char*)&hash, sizeof(hash));
+                                       memcpy(&(dat[len - authlen]), hash, authlen);
+
+                                       /* paranoid */
+                                       memset((caddr_t)&tctx.md5, 0, sizeof(tctx.md5));
+                                       memset((caddr_t)hash, 0, sizeof(*hash));
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                               case AH_SHA:
+                                       tctx.sha1 = ((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx;
+                                       SHA1Update(&tctx.sha1, (caddr_t)espp, len - iphlen - authlen);
+                                       SHA1Final(hash, &tctx.sha1);
+                                       tctx.sha1 = ((struct sha1_ctx*)(tdbp->tdb_key_a))->octx;
+                                       SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+                                       SHA1Final(hash, &tctx.sha1);
+                                       memcpy(&(dat[len - authlen]), hash, authlen);
+                                       
+                                       /* paranoid */
+                                       memset((caddr_t)&tctx.sha1, 0, sizeof(tctx.sha1));
+                                       memset((caddr_t)hash, 0, sizeof(*hash));
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                               case AH_NONE:
+                                       break;
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+#ifdef NET_21
+                               skb->h.raw = (unsigned char*)espp;
+#endif /* NET_21 */
+                               break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_AH
+                       case IPPROTO_AH:
+                               ahp = (struct ah *)(dat + iphlen);
+                               ahp->ah_spi = tdbp->tdb_said.spi;
+                               ahp->ah_rpl = htonl(++(tdbp->tdb_replaywin_lastseq));
+                               ahp->ah_rv = 0;
+                               ahp->ah_nh = iph->protocol;
+                               ahp->ah_hl = (headroom >> 2) - sizeof(__u64)/sizeof(__u32);
+                               iph->protocol = IPPROTO_AH;
+                               dmp("ahp", (char*)ahp, sizeof(*ahp));
+                               
+                               ipo = *iph;
+                               ipo.tos = 0;
+                               ipo.frag_off = 0;
+                               ipo.ttl = 0;
+                               ipo.check = 0;
+                               dmp("ipo", (char*)&ipo, sizeof(ipo));
+                               
+                               switch(tdbp->tdb_authalg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                               case AH_MD5:
+                                       tctx.md5 = ((struct md5_ctx*)(tdbp->tdb_key_a))->ictx;
+                                       dmp("ictx", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5, (unsigned char *)&ipo, sizeof (struct iphdr));
+                                       dmp("ictx+ipo", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5, (unsigned char *)ahp, headroom - sizeof(ahp->ah_data));
+                                       dmp("ictx+ahp", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5, (unsigned char *)zeroes, AHHMAC_HASHLEN);
+                                       dmp("ictx+zeroes", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5,  dat + iphlen + headroom, len - iphlen - headroom);
+                                       dmp("ictx+dat", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Final(hash, &tctx.md5);
+                                       dmp("ictx hash", (char*)&hash, sizeof(hash));
+                                       tctx.md5 = ((struct md5_ctx*)(tdbp->tdb_key_a))->octx;
+                                       dmp("octx", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Update(&tctx.md5, hash, AHMD596_ALEN);
+                                       dmp("octx+hash", (char*)&tctx.md5, sizeof(tctx.md5));
+                                       MD5Final(hash, &tctx.md5);
+                                       dmp("octx hash", (char*)&hash, sizeof(hash));
+                                       
+                                       memcpy(ahp->ah_data, hash, AHHMAC_HASHLEN);
+                                       
+                                       /* paranoid */
+                                       memset((caddr_t)&tctx.md5, 0, sizeof(tctx.md5));
+                                       memset((caddr_t)hash, 0, sizeof(hash));
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                               case AH_SHA:
+                                       tctx.sha1 = ((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx;
+                                       SHA1Update(&tctx.sha1, (unsigned char *)&ipo, sizeof (struct iphdr));
+                                       SHA1Update(&tctx.sha1, (unsigned char *)ahp, headroom - sizeof(ahp->ah_data));
+                                       SHA1Update(&tctx.sha1, (unsigned char *)zeroes, AHHMAC_HASHLEN);
+                                       SHA1Update(&tctx.sha1,  dat + iphlen + headroom, len - iphlen - headroom);
+                                       SHA1Final(hash, &tctx.sha1);
+                                       tctx.sha1 = ((struct sha1_ctx*)(tdbp->tdb_key_a))->octx;
+                                       SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+                                       SHA1Final(hash, &tctx.sha1);
+                                       
+                                       memcpy(ahp->ah_data, hash, AHHMAC_HASHLEN);
+                                       
+                                       /* paranoid */
+                                       memset((caddr_t)&tctx.sha1, 0, sizeof(tctx.sha1));
+                                       memset((caddr_t)hash, 0, sizeof(hash));
+                                       break;
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                               default:
+                                       spin_unlock(&tdb_lock);
+                                       stats->tx_errors++;
+                                       goto cleanup;
+                               }
+#ifdef NET_21
+                               skb->h.raw = (unsigned char*)ahp;
+#endif /* NET_21 */
+                               break;
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_IPIP
+                       case IPPROTO_IPIP:
+                               iph->version  = 4;
+                               switch(sysctl_ipsec_tos) {
+                               case 0:
+#ifdef NET_21
+                                       iph->tos = skb->nh.iph->tos;
+#else /* NET_21 */
+                                       iph->tos = skb->ip_hdr->tos;
+#endif /* NET_21 */
+                                       break;
+                               case 1:
+                                       iph->tos = 0;
+                                       break;
+                               default:
+                               }
+#ifdef NET_21
+                               iph->ttl      = ip_statistics.IpDefaultTTL;
+#else /* NET_21 */
+                               iph->ttl      = 64; /* ip_statistics.IpDefaultTTL; */
+#endif /* NET_21 */
+                               iph->frag_off = 0;
+                               iph->saddr    = ((struct sockaddr_in*)(tdbp->tdb_addr_s))->sin_addr.s_addr;
+                               iph->daddr    = ((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr.s_addr;
+                               iph->protocol = IPPROTO_IPIP;
+                               iph->ihl      = sizeof(struct iphdr) >> 2 /* 5 */;
+#ifdef IP_SELECT_IDENT
+                               /* XXX use of skb->dst below is a questionable
+                                  substitute for &rt->u.dst which is only
+                                  available later-on */
+                               ip_select_ident(iph, skb->dst);
+#else
+                               iph->id       = htons(ip_id_count++);   /* Race condition here? */
+#endif
+
+                               newdst = (__u32)iph->daddr;
+                               newsrc = (__u32)iph->saddr;
+               
+#ifdef NET_21
+                               skb->h.ipiph = skb->nh.iph;
+#endif /* NET_21 */
+                               break;
+#endif /* !CONFIG_IPSEC_IPIP */
+#ifdef CONFIG_IPSEC_IPCOMP
+                       case IPPROTO_COMP:
+                               {
+                                       unsigned int flags = 0;
+#ifdef CONFIG_IPSEC_DEBUG
+                                       unsigned int old_tot_len = ntohs(iph->tot_len);
+#endif
+                                       tdbp->tdb_comp_ratio_dbytes += ntohs(iph->tot_len);
+
+                                       skb = skb_compress(skb, tdbp, &flags);
+
+#ifdef NET_21
+                                       iph = skb->nh.iph;
+#else /* NET_21 */
+                                       iph = skb->ip_hdr;
+#endif /* NET_21 */
+
+                                       tdbp->tdb_comp_ratio_cbytes += ntohs(iph->tot_len);
+
+#ifdef CONFIG_IPSEC_DEBUG
+                                       if (debug_tunnel & DB_TN_CROUT)
+                                       {
+                                               if (old_tot_len > ntohs(iph->tot_len))
+                                                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                                                   "packet shrunk from %d to %d bytes after compression, cpi=%04x (should be from spi=%08x, spi&0xffff=%04x.\n",
+                                                                   old_tot_len, ntohs(iph->tot_len),
+                                                                   ntohs(((struct ipcomphdr*)(((char*)iph) + ((iph->ihl) << 2)))->ipcomp_cpi),
+                                                                   ntohl(tdbp->tdb_said.spi),
+                                                                   (__u16)(ntohl(tdbp->tdb_said.spi) & 0x0000ffff));
+                                               else
+                                                       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                                                   "packet did not compress (flags = %d).\n",
+                                                                   flags);
+                                       }
+#endif /* CONFIG_IPSEC_DEBUG */
+                               }
+                               break;
+#endif /* CONFIG_IPSEC_IPCOMP */
+                       default:
+                               spin_unlock(&tdb_lock);
+                               stats->tx_errors++;
+                               goto cleanup;
+                       }
+                       
+#ifdef NET_21
+                       skb->nh.raw = skb->data;
+#else /* NET_21 */
+                       skb->ip_hdr = skb->h.iph = (struct iphdr *) skb->data;
+#endif /* NET_21 */
+                       iph->check = 0;
+                       iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
+                       
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: "
+                                   "after <%s%s%s>, SA:%s:\n",
+                                   TDB_XFORM_NAME(tdbp), sa);
+                       KLIPS_IP_PRINT(debug_tunnel & DB_TN_XMIT, iph);
+                       
+                       tdbp->tdb_lifetime_bytes_c += len;
+                       if(!tdbp->tdb_lifetime_usetime_c) {
+                               tdbp->tdb_lifetime_usetime_c = jiffies / HZ;
+                       }
+                       tdbp->tdb_lifetime_usetime_l = jiffies / HZ;
+                       tdbp->tdb_lifetime_packets_c += 1;
+
+                       tdbp = tdbp->tdb_onext;
+                       
+               }
+               /* end encapsulation loop here XXX */
+
+               spin_unlock(&tdb_lock);
+
+               matcher.sen_ip_src.s_addr = iph->saddr;
+               matcher.sen_ip_dst.s_addr = iph->daddr;
+               spin_lock(&eroute_lock);
+               er = ipsec_findroute(&matcher);
+               if(er) {
+                       outgoing_said = er->er_said;
+               }
+               spin_unlock(&eroute_lock);
+               KLIPS_PRINT(/* ((orgdst != newdst) || (orgsrc != newsrc)) */
+                       (orgedst != outgoing_said.dst.s_addr) &&
+                       outgoing_said.dst.s_addr &&
+                       er &&
+                       (debug_tunnel & DB_TN_XMIT),
+                       "klips_debug:ipsec_tunnel_start_xmit: We are recursing here.\n");
+       } while(/*((orgdst != newdst) || (orgsrc != newsrc))*/
+               (orgedst != outgoing_said.dst.s_addr) &&
+               outgoing_said.dst.s_addr &&
+               er);
+       
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_tunnel_start_xmit: "
+                   "After recursive xforms -- head,tailroom: %d,%d\n",
+                   skb_headroom(skb), skb_tailroom(skb));
+
+       if(sysctl_ipsec_icmp && (innersrc != newsrc) && (ntohs(iph->tot_len) > physmtu)) {
+               ICMP_SEND(oskb ? oskb : skb,
+                         ICMP_DEST_UNREACH,
+                         ICMP_FRAG_NEEDED,
+                         prv->mtu,
+                         physdev);
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "IPSEC tunnel mode packet is larger than MTU, ICMP sent.\n");
+       }
+
+       if(saved_header) {
+               if(skb_headroom(skb) < hard_header_len) {
+                       printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                              "tried to skb_push hhlen=%d, %d available.  "
+                              "This should never happen, please report.\n",
+                              hard_header_len, skb_headroom(skb));
+                       stats->tx_errors++;
+                       goto cleanup;
+               }
+               skb_push(skb, hard_header_len);
+               for (i = 0; i < hard_header_len; i++) {
+                       skb->data[i] = saved_header[i];
+               }
+       }
+ bypass:
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_tunnel_start_xmit: "
+                   "With hard_header, final head,tailroom: %d,%d\n",
+                   skb_headroom(skb), skb_tailroom(skb));
+
+#ifdef NET_21
+       /* new route/dst cache code from James Morris */
+       skb->dev = physdev;
+       /*skb_orphan(skb);*/
+       if(ip_route_output(&rt,
+                          skb->nh.iph->daddr,
+                          skb->nh.iph->saddr,
+                          RT_TOS(skb->nh.iph->tos),
+                          physdev->iflink)) {
+               stats->tx_errors++;
+               goto cleanup;
+       }
+       if(dev == rt->u.dst.dev) {
+               ip_rt_put(rt);
+               /* This is recursion, drop it. */
+               stats->tx_errors++;
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "suspect recursion, dev=rt->u.dst.dev=%s, dropped\n", dev->name);
+               goto cleanup;
+       }
+       dst_release(skb->dst);
+       skb->dst = &rt->u.dst;
+       stats->tx_bytes += skb->len;
+       if(skb->len < skb->nh.raw - skb->data) {
+               printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                      "tried to __skb_pull nh-data=%d, %d available.  "
+                      "This should never happen, please report.\n",
+                      skb->nh.raw - skb->data, skb->len);
+               stats->tx_errors++;
+               goto cleanup;
+       }
+       __skb_pull(skb, skb->nh.raw - skb->data);
+#ifdef SKB_RESET_NFCT
+       nf_conntrack_put(skb->nfct);
+       skb->nfct = NULL;
+#ifdef CONFIG_NETFILTER_DEBUG
+       skb->nf_debug = 0;
+#endif /* CONFIG_NETFILTER_DEBUG */
+#endif /* SKB_RESET_NFCT */
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_tunnel_start_xmit: "
+                   "...done, calling ip_send()\n");
+#ifdef NETDEV_23
+       {
+               int err;
+
+               err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
+                             ipsec_tunnel_xmit2);
+               if(err != NET_XMIT_SUCCESS && err != NET_XMIT_CN) {
+                       if(net_ratelimit())
+                               printk(KERN_ERR
+                                      "ipsec_tunnel_start_xmit: ip_send() failed, err=%d\n", 
+                                      -err);
+                       stats->tx_errors++;
+                       stats->tx_aborted_errors++;
+                       skb = NULL;
+                       goto cleanup;
+               }
+       }
+#else
+       ip_send(skb);
+#endif
+#else /* NET_21 */
+       skb->arp = 1;
+       /* ISDN/ASYNC PPP from Matjaz Godec. */
+       /*      skb->protocol = htons(ETH_P_IP); */
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_tunnel_start_xmit: "
+                   "...done, calling dev_queue_xmit() or ip_fragment().\n");
+       IP_SEND(skb, physdev);
+#endif /* NET_21 */
+       stats->tx_packets++;
+
+       skb = NULL;
+ cleanup:
+#if defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE)
+       netif_wake_queue(dev);
+#else
+       dev->tbusy = 0;
+#endif
+       if(saved_header)
+               kfree(saved_header);
+       if(skb) {
+               dev_kfree_skb(skb, FREE_WRITE);
+       }
+       if(oskb)
+               dev_kfree_skb(oskb, FREE_WRITE);
+       return 0;
+}
+
+DEBUG_NO_STATIC struct net_device_stats *
+ipsec_tunnel_get_stats(struct device *dev)
+{
+       return &(((struct ipsecpriv *)(dev->priv))->mystats);
+}
+
+/*
+ * Revectored calls.
+ * For each of these calls, a field exists in our private structure.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_hard_header(struct sk_buff *skb, struct device *dev,
+       unsigned short type, void *daddr, void *saddr, unsigned len)
+{
+       struct ipsecpriv *prv = dev->priv;
+       struct device *tmp;
+       int ret;
+
+       if(!prv->hard_header) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "physical device has been detached, packet dropped "
+                           "0x%p->0x%p len=%d type=%d dev=%s->NULL ",
+                           saddr, daddr, len, type, dev->name);
+#ifdef NET_21
+               KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->nh.iph->saddr),
+                           (__u32)ntohl(skb->nh.iph->daddr) );
+#else /* NET_21 */
+               KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->ip_hdr->saddr),
+                           (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+               return -ENODEV;
+       }
+
+#define da ((struct device *)(prv->dev))->dev_addr
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_hard_header: "
+                   "Revectored 0x%p->0x%p len=%d type=%d dev=%s->%s "
+                   "dev_addr=%02x:%02x:%02x:%02x:%02x:%02x ",
+                   saddr, daddr, len, type, dev->name, prv->dev->name,
+                   da[0], da[1], da[2], da[3], da[4], da[5]);
+#ifdef NET_21
+                   KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                               "ip=%08x->%08x\n",
+                               (__u32)ntohl(skb->nh.iph->saddr),
+                               (__u32)ntohl(skb->nh.iph->daddr) );
+#else /* NET_21 */
+                   KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                               "ip=%08x->%08x\n",
+                               (__u32)ntohl(skb->ip_hdr->saddr),
+                               (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+       tmp = skb->dev;
+       skb->dev = prv->dev;
+       ret = prv->hard_header(skb, prv->dev, type, (void *)daddr, (void *)saddr, len);
+       skb->dev = tmp;
+       return ret;
+}
+
+DEBUG_NO_STATIC int
+#ifdef NET_21
+ipsec_tunnel_rebuild_header(struct sk_buff *skb)
+#else /* NET_21 */
+ipsec_tunnel_rebuild_header(void *buff, struct device *dev,
+                       unsigned long raddr, struct sk_buff *skb)
+#endif /* NET_21 */
+{
+       struct ipsecpriv *prv = skb->dev->priv;
+       struct device *tmp;
+       int ret;
+       
+       if(!prv->rebuild_header) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_rebuild_header: "
+                           "physical device has been detached, packet dropped "
+                           "skb->dev=%s->NULL ",
+                           skb->dev->name);
+#ifdef NET_21
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->nh.iph->saddr),
+                           (__u32)ntohl(skb->nh.iph->daddr) );
+#else /* NET_21 */
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->ip_hdr->saddr),
+                           (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel: "
+                   "Revectored rebuild_header dev=%s->%s ",
+                   skb->dev->name, prv->dev->name);
+#ifdef NET_21
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "ip=%08x->%08x\n",
+                   (__u32)ntohl(skb->nh.iph->saddr),
+                   (__u32)ntohl(skb->nh.iph->daddr) );
+#else /* NET_21 */
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "ip=%08x->%08x\n",
+                   (__u32)ntohl(skb->ip_hdr->saddr),
+                   (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+       tmp = skb->dev;
+       skb->dev = prv->dev;
+       
+#ifdef NET_21
+       ret = prv->rebuild_header(skb);
+#else /* NET_21 */
+       ret = prv->rebuild_header(buff, prv->dev, raddr, skb);
+#endif /* NET_21 */
+       skb->dev = tmp;
+       return ret;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_set_mac_address(struct device *dev, void *addr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       if(!prv->set_mac_address) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_set_mac_address: "
+                           "physical device has been detached, cannot set - "
+                           "skb->dev=%s->NULL\n",
+                           dev->name);
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_set_mac_address: "
+                   "Revectored dev=%s->%s addr=%p\n",
+                   dev->name, prv->dev->name, addr);
+       return prv->set_mac_address(prv->dev, addr);
+
+}
+
+#ifndef NET_21
+DEBUG_NO_STATIC void
+ipsec_tunnel_cache_bind(struct hh_cache **hhp, struct device *dev,
+                                unsigned short htype, __u32 daddr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       if(!prv->header_cache_bind) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_bind: "
+                           "physical device has been detached, cannot set - "
+                           "skb->dev=%s->NULL\n",
+                           dev->name);
+               return;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_cache_bind: "
+                   "Revectored \n");
+       prv->header_cache_bind(hhp, prv->dev, htype, daddr);
+       return;
+}
+#endif /* !NET_21 */
+
+
+DEBUG_NO_STATIC void
+ipsec_tunnel_cache_update(struct hh_cache *hh, struct device *dev, unsigned char *  haddr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       if(!prv->header_cache_update) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_update: "
+                           "physical device has been detached, cannot set - "
+                           "skb->dev=%s->NULL\n",
+                           dev->name);
+               return;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel: "
+                   "Revectored cache_update\n");
+       prv->header_cache_update(hh, prv->dev, haddr);
+       return;
+}
+
+#ifdef NET_21
+DEBUG_NO_STATIC int
+ipsec_tunnel_neigh_setup(struct neighbour *n)
+{
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel: "
+                   "ipsec_tunnel_neigh_setup\n");
+
+        if (n->nud_state == NUD_NONE) {
+                n->ops = &arp_broken_ops;
+                n->output = n->ops->output;
+        }
+        return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_neigh_setup_dev(struct device *dev, struct neigh_parms *p)
+{
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel: "
+                   "ipsec_tunnel_neigh_setup_dev\n");
+
+        if (p->tbl->family == AF_INET) {
+                p->neigh_setup = ipsec_tunnel_neigh_setup;
+                p->ucast_probes = 0;
+                p->mcast_probes = 0;
+        }
+        return 0;
+}
+#endif /* NET_21 */
+
+/*
+ * We call the attach routine to attach another device.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_attach(struct device *tndev, struct ipsecpriv *prv, struct device *dev)
+{
+        int i;
+
+       prv->dev = dev;
+       prv->hard_start_xmit = dev->hard_start_xmit;
+       prv->get_stats = dev->get_stats;
+
+       if (dev->hard_header) {
+               prv->hard_header = dev->hard_header;
+               tndev->hard_header = ipsec_tunnel_hard_header;
+       } else
+               tndev->hard_header = NULL;
+       
+       if (dev->rebuild_header) {
+               prv->rebuild_header = dev->rebuild_header;
+               tndev->rebuild_header = ipsec_tunnel_rebuild_header;
+       } else
+               tndev->rebuild_header = NULL;
+       
+       if (dev->set_mac_address) {
+               prv->set_mac_address = dev->set_mac_address;
+               tndev->set_mac_address = ipsec_tunnel_set_mac_address;
+       } else
+               tndev->set_mac_address = NULL;
+       
+#ifndef NET_21
+       if (dev->header_cache_bind) {
+               prv->header_cache_bind = dev->header_cache_bind;
+               tndev->header_cache_bind = ipsec_tunnel_cache_bind;
+       } else
+               tndev->header_cache_bind = NULL;
+#endif /* !NET_21 */
+
+       if (dev->header_cache_update) {
+               prv->header_cache_update = dev->header_cache_update;
+               tndev->header_cache_update = ipsec_tunnel_cache_update;
+       } else
+               tndev->header_cache_update = NULL;
+
+       tndev->hard_header_len = dev->hard_header_len;
+
+#ifdef NET_21
+/*     prv->neigh_setup        = dev->neigh_setup; */
+       dev->neigh_setup        = ipsec_tunnel_neigh_setup_dev;
+#endif /* NET_21 */
+       tndev->mtu = 16260; /* 0xfff0; */ /* dev->mtu; */
+       prv->mtu = dev->mtu;
+
+#ifdef PHYSDEV_TYPE
+       tndev->type = dev->type /* ARPHRD_TUNNEL */;    /* initially */
+#endif /*  PHYSDEV_TYPE */
+
+       tndev->addr_len = dev->addr_len;
+       for (i=0; i<tndev->addr_len; i++) {
+               tndev->dev_addr[i] = dev->dev_addr[i];
+       }
+#ifdef CONFIG_IPSEC_DEBUG
+       if(debug_tunnel & DB_TN_INIT) {
+               printk(KERN_INFO "klips_debug:ipsec_tunnel_attach: "
+                      "physical device %s being attached has HW address: %2x",
+                      dev->name, dev->dev_addr[0]);
+               for (i=1; i < dev->addr_len; i++) {
+                       printk(":%02x", dev->dev_addr[i]);
+               }
+               printk("\n");
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       return 0;
+}
+
+/*
+ * We call the detach routine to detach the ipsec tunnel from another device.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_detach(struct device *dev, struct ipsecpriv *prv)
+{
+        int i;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_detach: "
+                      "physical device %s being detached from virtual device %s\n",
+                      prv->dev->name, dev->name);
+
+       prv->dev = NULL;
+       prv->hard_start_xmit = NULL;
+       prv->get_stats = NULL;
+
+       prv->hard_header = NULL;
+       dev->hard_header = NULL;
+       
+       prv->rebuild_header = NULL;
+       dev->rebuild_header = NULL;
+       
+       prv->set_mac_address = NULL;
+       dev->set_mac_address = NULL;
+       
+#ifndef NET_21
+       prv->header_cache_bind = NULL;
+       dev->header_cache_bind = NULL;
+#endif /* !NET_21 */
+
+       prv->header_cache_update = NULL;
+       dev->header_cache_update = NULL;
+
+#ifdef NET_21
+/*     prv->neigh_setup        = NULL; */
+       dev->neigh_setup        = NULL;
+#endif /* NET_21 */
+       dev->hard_header_len = 0;
+       dev->mtu = 0;
+       prv->mtu = 0;
+       for (i=0; i<MAX_ADDR_LEN; i++) {
+               dev->dev_addr[i] = 0;
+       }
+       dev->addr_len = 0;
+#ifdef PHYSDEV_TYPE
+       dev->type = 0;
+#endif /*  PHYSDEV_TYPE */
+       
+       return 0;
+}
+
+/*
+ * We call the clear routine to detach all ipsec tunnels from other devices.
+ */
+DEBUG_NO_STATIC int
+ipsec_tunnel_clear(void)
+{
+       int i;
+       struct device *ipsecdev = NULL, *prvdev;
+       struct ipsecpriv *prv;
+       char name[9];
+       int ret;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_clear: called.\n");
+
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               sprintf(name, "ipsec%d", i);
+               if((ipsecdev = ipsec_dev_get(name)) != NULL) {
+                       if((prv = (struct ipsecpriv *)(ipsecdev->priv))) {
+                               prvdev = (struct device *)(prv->dev);
+                               if(prvdev) {
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                   "klips_debug:ipsec_tunnel_clear: "
+                                                   "physical device for device %s is %s\n",
+                                                   name, prvdev->name);
+                                       if((ret = ipsec_tunnel_detach(ipsecdev, prv))) {
+                                               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                           "klips_debug:ipsec_tunnel_clear: "
+                                                           "error %d detatching device %s from device %s.\n",
+                                                           ret, name, prvdev->name);
+                                               return ret;
+                                       }
+                               }
+                       }
+               }
+       }
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_ioctl(struct device *dev, struct ifreq *ifr, int cmd)
+{
+       struct ipsectunnelconf *cf = (struct ipsectunnelconf *)&ifr->ifr_data;
+       struct ipsecpriv *prv = dev->priv;
+       struct device *them; /* physical device */
+#ifdef CONFIG_IP_ALIAS
+       char *colon;
+       char realphysname[IFNAMSIZ];
+#endif /* CONFIG_IP_ALIAS */
+       
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_ioctl: "
+                   "tncfg service call #%d\n", cmd);
+       switch (cmd) {
+       /* attach a virtual ipsec? device to a physical device */
+       case IPSEC_SET_DEV:
+#ifdef CONFIG_IP_ALIAS
+               /* If this is an IP alias interface, get its real physical name */
+               strncpy(realphysname, cf->cf_name, IFNAMSIZ);
+               realphysname[IFNAMSIZ-1] = 0;
+               colon = strchr(realphysname, ':');
+               if (colon) *colon = 0;
+               them = ipsec_dev_get(realphysname);
+#else /* CONFIG_IP_ALIAS */
+               them = ipsec_dev_get(cf->cf_name);
+#endif /* CONFIG_IP_ALIAS */
+
+               if (them == NULL) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_ioctl: "
+                                   "physical device requested is null\n");
+
+                       return -ENXIO;
+               }
+               
+               if (prv->dev)
+                       return -EBUSY;
+               return ipsec_tunnel_attach(dev, dev->priv, them);
+
+       case IPSEC_DEL_DEV:
+               if (! prv->dev)
+                       return -ENODEV;
+               return ipsec_tunnel_detach(dev, dev->priv);
+              
+       case IPSEC_CLR_DEV:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_ioctl: "
+                           "calling ipsec_tunnel_clear.\n");
+               return ipsec_tunnel_clear();
+
+       default:
+               return -EOPNOTSUPP;
+       }
+}
+
+int
+ipsec_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
+{
+       struct device *dev = ptr;
+       struct device *ipsec_dev;
+       struct ipsecpriv *priv;
+       char name[9];
+       int i;
+
+       /* check for loopback devices */
+       if (dev->flags & IFF_LOOPBACK)
+               return(NOTIFY_DONE);
+
+       switch (event) 
+       {
+               case NETDEV_DOWN:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "ipsec_device_event: NETDEV_DOWN...\n");
+                       /* find the attached physical device and detach it. */
+                       for(i = 0; i < IPSEC_NUM_IF; i++) {
+                               sprintf(name, "ipsec%d", i);
+                               ipsec_dev = ipsec_dev_get(name);
+                               if(ipsec_dev) {
+                                       priv = (struct ipsecpriv *)(ipsec_dev->priv);
+                                       if(priv) {
+                                               ;
+                                               if(((struct device *)(priv->dev)) == dev) {
+                                                       dev_close(ipsec_dev);
+                                                       /* return */ ipsec_tunnel_detach(ipsec_dev, priv);
+                                                       return NOTIFY_DONE;
+                                                       break;
+                                               }
+                                       } else {
+                                               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                           "klips_debug:ipsec_device_event: device '%s' has no private data space!\n",
+                                                           ipsec_dev->name);
+                                       }
+                               }
+                       }
+
+                       break;
+               case NETDEV_UP:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "ipsec_device_event: NETDEV_UP...\n");
+                       /* Only handle ethernet ports */
+                       if(dev->type!=ARPHRD_ETHER && dev->type!=ARPHRD_LOOPBACK)
+                               return NOTIFY_DONE;
+
+                       break;
+#ifdef NET_21
+               case NETDEV_UNREGISTER:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "ipsec_device_event: NETDEV_UNREGISTER...\n");
+
+                       break;
+#endif /* NET_21 */
+       }
+       return NOTIFY_DONE;
+}
+
+/*
+ *     Called when an ipsec tunnel device is initialized.
+ *     The ipsec tunnel device structure is passed to us.
+ */
+ 
+int
+ipsec_tunnel_init(struct device *dev)
+{
+       int i;
+
+       printk(KERN_INFO "klips_debug:ipsec_tunnel_init: "
+              "initialisation of device: %s\n",
+              dev->name ? dev->name : "NULL");
+
+       /* Add our tunnel functions to the device */
+       dev->open               = ipsec_tunnel_open;
+       dev->stop               = ipsec_tunnel_close;
+       dev->hard_start_xmit    = ipsec_tunnel_start_xmit;
+       dev->get_stats          = ipsec_tunnel_get_stats;
+
+       dev->priv = kmalloc(sizeof(struct ipsecpriv), GFP_KERNEL);
+       if (dev->priv == NULL)
+               return -ENOMEM;
+       memset(dev->priv, 0, sizeof(struct ipsecpriv));
+
+       for(i = 0; i < sizeof(zeroes); i++) {
+               ((__u8*)(zeroes))[i] = 0;
+       }
+       
+#ifndef NET_21
+       /* Initialize the tunnel device structure */
+       for (i = 0; i < DEV_NUMBUFFS; i++)
+               skb_queue_head_init(&dev->buffs[i]);
+#endif /* !NET_21 */
+
+       dev->set_multicast_list = NULL;
+       dev->do_ioctl           = ipsec_tunnel_ioctl;
+       dev->hard_header        = NULL;
+       dev->rebuild_header     = NULL;
+       dev->set_mac_address    = NULL;
+#ifndef NET_21
+       dev->header_cache_bind  = NULL;
+#endif /* !NET_21 */
+       dev->header_cache_update= NULL;
+
+#ifdef NET_21
+/*     prv->neigh_setup        = NULL; */
+       dev->neigh_setup        = ipsec_tunnel_neigh_setup_dev;
+#endif /* NET_21 */
+       dev->hard_header_len    = 0;
+       dev->mtu                = 0;
+       dev->addr_len           = 0;
+       dev->type               = ARPHRD_TUNNEL; /* 0 */ /* ARPHRD_ETHER; */ /* initially */
+       dev->tx_queue_len       = 10;           /* Small queue */
+       memset(dev->broadcast,0xFF, ETH_ALEN);  /* what if this is not attached to ethernet? */
+
+       /* New-style flags. */
+       dev->flags              = IFF_NOARP /* 0 */ /* Petr Novak */;
+#ifdef NET_21
+       dev_init_buffers(dev);
+#else /* NET_21 */
+       dev->family             = AF_INET;
+       dev->pa_addr            = 0;
+       dev->pa_brdaddr         = 0;
+       dev->pa_mask            = 0;
+       dev->pa_alen            = 4;
+#endif /* NET_21 */
+
+       /* We're done.  Have I forgotten anything? */
+       return 0;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/*  Module specific interface (but it links with the rest of IPSEC  */
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+int
+ipsec_tunnel_probe(struct device *dev)
+{
+       ipsec_tunnel_init(dev); 
+       return 0;
+}
+
+static struct device dev_ipsec3 = 
+{
+       "ipsec3\0   ",          /* name */
+       0,                      /* recv memory end */
+       0,                      /* recv memory start */
+       0,                      /* memory end */
+       0,                      /* memory start */
+       0x0,                    /* base I/O address */
+       0,                      /* IRQ */
+       0, 0, 0,                /* flags */
+       NULL,                   /* next device */
+       ipsec_tunnel_probe      /* setup */
+};
+
+static struct device dev_ipsec2 = 
+{
+       "ipsec2\0   ",          /* name */
+       0,                      /* recv memory end */
+       0,                      /* recv memory start */
+       0,                      /* memory end */
+       0,                      /* memory start */
+       0x0,                    /* base I/O address */
+       0,                      /* IRQ */
+       0, 0, 0,                /* flags */
+       NULL,                   /* next device */
+       ipsec_tunnel_probe      /* setup */
+};
+
+static struct device dev_ipsec1 = 
+{
+       "ipsec1\0   ",          /* name */
+       0,                      /* recv memory end */
+       0,                      /* recv memory start */
+       0,                      /* memory end */
+       0,                      /* memory start */
+       0x0,                    /* base I/O address */
+       0,                      /* IRQ */
+       0, 0, 0,                /* flags */
+       NULL,                   /* next device */
+       ipsec_tunnel_probe      /* setup */
+};
+
+static struct device dev_ipsec0 = 
+{
+       "ipsec0\0   ",          /* name */
+       0,                      /* recv memory end */
+       0,                      /* recv memory start */
+       0,                      /* memory end */
+       0,                      /* memory start */
+       0x0,                    /* base I/O address */
+       0,                      /* IRQ */
+       0, 0, 0,                /* flags */
+       NULL,                   /* next device */
+       ipsec_tunnel_probe      /* setup */
+};
+
+int 
+ipsec_tunnel_init_devices(void)
+{
+#if 0
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_init_devices: "
+                   "registering device %s\n",
+                   dev_ipsec0.name);
+#endif
+       if (register_netdev(&dev_ipsec0) != 0)
+               return -EIO;
+#if 0
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_init_devices: "
+                   "registering device %s\n",
+                   dev_ipsec1.name);
+#endif
+       if (register_netdev(&dev_ipsec1) != 0)
+               return -EIO;
+#if 0
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_init_devices: "
+                   "registering device %s\n",
+                   dev_ipsec2.name);
+#endif
+       if (register_netdev(&dev_ipsec2) != 0)
+               return -EIO;
+#if 0
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_init_devices: "
+                   "registering device %s\n",
+                   dev_ipsec3.name);
+#endif
+       if (register_netdev(&dev_ipsec3) != 0)
+               return -EIO;
+       return 0;
+}
+
+/* void */
+int
+ipsec_tunnel_cleanup_devices(void)
+{
+       int error = 0;
+
+       unregister_netdev(&dev_ipsec0);
+       unregister_netdev(&dev_ipsec1);
+       unregister_netdev(&dev_ipsec2);
+       unregister_netdev(&dev_ipsec3);
+       kfree(dev_ipsec0.priv);
+       kfree(dev_ipsec1.priv);
+       kfree(dev_ipsec2.priv);
+       kfree(dev_ipsec3.priv);
+       dev_ipsec0.priv=NULL;
+       dev_ipsec1.priv=NULL;
+       dev_ipsec2.priv=NULL;
+       dev_ipsec3.priv=NULL;
+
+       return error;
+}
+
+/*
+ * $Log$
+ * Revision 1.131  2000/11/09 20:52:15  rgb
+ * More spinlock shuffling, locking earlier and unlocking later in rcv to
+ * include ipcomp and prevent races, renaming some tdb variables that got
+ * forgotten, moving some unlocks to include tdbs and adding a missing
+ * unlock.  Thanks to Svenning for some of these.
+ *
+ * Revision 1.130  2000/11/09 20:11:22  rgb
+ * Minor shuffles to fix non-standard kernel config option selection.
+ *
+ * Revision 1.129  2000/11/06 04:32:49  rgb
+ * Clean up debug printing.
+ * Copy skb->protocol for all kernel versions.
+ * Ditched spin_lock_irqsave in favour of spin_lock.
+ * Disabled TTL decrement, done in ip_forward.
+ * Added debug printing before pfkey_acquire().
+ * Fixed printk-deltdbchain-spin_lock races (Svenning).
+ * Use defaultTTL for 2.1+ kernels.
+ * Add Svenning's adaptive content compression.
+ * Fix up debug display arguments.
+ *
+ * Revision 1.128  2000/09/28 00:58:57  rgb
+ * Moved the IKE passthrough check after the eroute lookup so we can pass
+ * IKE through intermediate tunnels.
+ *
+ * Revision 1.127  2000/09/22 17:52:11  rgb
+ * Fixed misleading ipcomp debug output.
+ *
+ * Revision 1.126  2000/09/22 04:22:56  rgb
+ * Fixed dumb spi->cpi conversion error.
+ *
+ * Revision 1.125  2000/09/21 04:34:48  rgb
+ * A few debug-specific things should be hidden under
+ * CONFIG_IPSEC_DEBUG.(MB)
+ * Improved ip_send() error handling.(MB)
+ *
+ * Revision 1.124  2000/09/21 03:40:58  rgb
+ * Added more debugging to try and track down the cpi outward copy problem.
+ *
+ * Revision 1.123  2000/09/19 07:08:49  rgb
+ * Added debugging to outgoing compression report.
+ *
+ * Revision 1.122  2000/09/18 19:21:26  henry
+ * RGB-supplied fix for RH5.2 problem
+ *
+ * Revision 1.121  2000/09/17 21:05:09  rgb
+ * Added tdb to skb_compress call to write in cpi.
+ *
+ * Revision 1.120  2000/09/17 16:57:16  rgb
+ * Added Svenning's patch to remove restriction of ipcomp to innermost
+ * transform.
+ *
+ * Revision 1.119  2000/09/15 11:37:01  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.118  2000/09/15 04:57:16  rgb
+ * Moved debug output after sanity check.
+ * Added tos copy sysctl.
+ *
+ * Revision 1.117  2000/09/12 03:22:51  rgb
+ * Converted ipsec_icmp, no_eroute_pass, opportunistic and #if0 debugs to
+ * sysctl.
+ *
+ * Revision 1.116  2000/09/08 19:18:19  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Added outgoing opportunistic hook, ifdef'ed out.
+ *
+ * Revision 1.115  2000/08/30 05:27:29  rgb
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Kill remainder of tdb_xform, tdb_xdata, xformsw.
+ *
+ * Revision 1.114  2000/08/28 18:15:46  rgb
+ * Added MB's nf-debug reset patch.
+ *
+ * Revision 1.113  2000/08/27 02:26:40  rgb
+ * Send all no-eroute-bypass, pluto-bypass and passthrough packets through
+ * fragmentation machinery for 2.0, 2.2 and 2.4 kernels.
+ *
+ * Revision 1.112  2000/08/20 21:37:33  rgb
+ * Activated pfkey_expire() calls.
+ * Added a hard/soft expiry parameter to pfkey_expire(). (Momchil)
+ * Re-arranged the order of soft and hard expiry to conform to RFC2367.
+ * Clean up references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.111  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.110  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.109  2000/07/28 13:50:54  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.108  2000/05/16 03:03:11  rgb
+ * Updates for 2.3.99pre8 from MB.
+ *
+ * Revision 1.107  2000/05/10 23:08:21  rgb
+ * Print a debug warning about bogus packets received by the outgoing
+ * processing machinery only when klipsdebug is not set to none.
+ * Comment out the device initialisation informational messages.
+ *
+ * Revision 1.106  2000/05/10 19:17:14  rgb
+ * Define an IP_SEND macro, intending to have all packet passthroughs
+ * use fragmentation.  This didn't quite work, but is a step in the
+ * right direction.
+ * Added buffer allocation debugging statements.
+ * Added configure option to shut off no eroute passthrough.
+ * Only check usetime against soft and hard limits if the tdb has been
+ * used.
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.105  2000/03/22 16:15:37  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.104  2000/03/16 14:04:15  rgb
+ * Indented headers for readability.
+ * Fixed debug scope to enable compilation with debug off.
+ * Added macros for ip_chk_addr and IS_MYADDR for identifying self.
+ *
+ * Revision 1.103  2000/03/16 07:11:07  rgb
+ * Hardcode PF_KEYv2 support.
+ * Fixed bug which allowed UDP/500 packet from another machine
+ * through in the clear.
+ * Added disabled skb->protocol fix for ISDN/ASYNC PPP from Matjaz Godec.
+ *
+ * Revision 1.102  2000/03/14 12:26:59  rgb
+ * Added skb->nfct support for clearing netfilter conntrack bits (MB).
+ *
+ * Revision 1.101  2000/02/14 21:05:22  rgb
+ * Added MB's netif_queue fix for kernels 2.3.43+.
+ *
+ * Revision 1.100  2000/01/26 10:04:57  rgb
+ * Fixed noisy 2.0 printk arguments.
+ *
+ * Revision 1.99  2000/01/21 06:16:25  rgb
+ * Added sanity checks on skb_push(), skb_pull() to prevent panics.
+ * Switched to AF_ENCAP macro.
+ * Shortened debug output per packet and re-arranging debug_tunnel
+ * bitmap flags, while retaining necessary information to avoid
+ * trampling the kernel print ring buffer.
+ * Reformatted recursion switch code.
+ * Changed all references to tdb_proto to tdb_said.proto for clarity.
+ *
+ * Revision 1.98  2000/01/13 08:09:31  rgb
+ * Shuffled debug_tunnel switches to focus output.
+ * Fixed outgoing recursion bug, limiting to recursing only if the remote
+ * SG changes and if it is valid, ie. not passthrough.
+ * Clarified a number of debug messages.
+ *
+ * Revision 1.97  2000/01/10 16:37:16  rgb
+ * MB support for new ip_select_ident() upon disappearance of
+ * ip_id_count in 2.3.36+.
+ *
+ * Revision 1.96  1999/12/31 14:59:08  rgb
+ * MB fix to use new skb_copy_expand in kernel 2.3.35.
+ *
+ * Revision 1.95  1999/12/29 21:15:44  rgb
+ * Fix tncfg to aliased device bug.
+ *
+ * Revision 1.94  1999/12/22 04:26:06  rgb
+ * Converted all 'static' functions to 'DEBUG_NO_STATIC' to enable
+ * debugging by providing external labels to all functions with debugging
+ * turned on.
+ *
+ * Revision 1.93  1999/12/13 13:30:14  rgb
+ * Changed MTU reports and HW address reporting back to debug only.
+ *
+ * Revision 1.92  1999/12/07 18:57:56  rgb
+ * Fix PFKEY symbol compile error (SADB_*) without pfkey enabled.
+ *
+ * Revision 1.91  1999/12/01 22:15:36  rgb
+ * Add checks for LARVAL and DEAD SAs.
+ * Change state of SA from MATURE to DYING when a soft lifetime is
+ * reached and print debug warning.
+ *
+ * Revision 1.90  1999/11/23 23:04:04  rgb
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.89  1999/11/18 18:50:59  rgb
+ * Changed all device registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ *
+ * Revision 1.88  1999/11/18 04:09:19  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.87  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.86  1999/10/16 18:25:37  rgb
+ * Moved SA lifetime expiry checks before packet processing.
+ * Expire SA on replay counter rollover.
+ *
+ * Revision 1.85  1999/10/16 04:24:31  rgb
+ * Add stats for time since last packet.
+ *
+ * Revision 1.84  1999/10/16 00:30:47  rgb
+ * Added SA lifetime counting.
+ *
+ * Revision 1.83  1999/10/15 22:15:57  rgb
+ * Clean out cruft.
+ * Add debugging.
+ *
+ * Revision 1.82  1999/10/08 18:26:19  rgb
+ * Fix 2.0.3x outgoing fragmented packet memory leak.
+ *
+ * Revision 1.81  1999/10/05 02:38:54  rgb
+ * Lower the default mtu of virtual devices to 16260.
+ *
+ * Revision 1.80  1999/10/03 18:56:41  rgb
+ * Spinlock support for 2.3.xx.
+ * Don't forget to undo spinlocks on error!
+ * Check for valid eroute before copying the structure.
+ *
+ * Revision 1.79  1999/10/01 15:44:53  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.78  1999/10/01 00:02:43  rgb
+ * Added tdb structure locking.
+ * Added eroute structure locking.
+ *
+ * Revision 1.77  1999/09/30 02:52:29  rgb
+ * Add Marc Boucher's Copy-On-Write code (same as ipsec_rcv.c).
+ *
+ * Revision 1.76  1999/09/25 19:31:27  rgb
+ * Refine MSS hack to affect SYN, but not SYN+ACK packets.
+ *
+ * Revision 1.75  1999/09/24 22:52:38  rgb
+ * Fix two things broken in 2.0.38 by trying to fix network notifiers.
+ *
+ * Revision 1.74  1999/09/24 00:30:37  rgb
+ * Add test for changed source as well as destination to check for
+ * recursion.
+ *
+ * Revision 1.73  1999/09/23 20:52:24  rgb
+ * Add James Morris' MSS hack patch, disabled.
+ *
+ * Revision 1.72  1999/09/23 20:22:40  rgb
+ * Enable, tidy and fix network notifier code.
+ *
+ * Revision 1.71  1999/09/23 18:09:05  rgb
+ * Clean up 2.2.x fragmenting traces.
+ * Disable dev->type switching, forcing ARPHRD_TUNNEL.
+ *
+ * Revision 1.70  1999/09/22 14:14:24  rgb
+ * Add sanity checks for revectored calls to prevent calling a downed I/F.
+ *
+ * Revision 1.69  1999/09/21 15:00:57  rgb
+ * Add Marc Boucher's packet size check.
+ * Flesh out network device notifier code.
+ *
+ * Revision 1.68  1999/09/18 11:39:57  rgb
+ * Start to add (disabled) netdevice notifier code.
+ *
+ * Revision 1.67  1999/09/17 23:44:40  rgb
+ * Add a comment warning potential code hackers to stay away from mac.raw.
+ *
+ * Revision 1.66  1999/09/17 18:04:02  rgb
+ * Add fix for unpredictable hard_header_len for ISDN folks (thanks MB).
+ * Ditch TTL decrement in 2.2 (MB).
+ *
+ * Revision 1.65  1999/09/15 23:15:35  henry
+ * Marc Boucher's PPP fixes
+ *
+ * Revision 1.64  1999/09/07 13:40:53  rgb
+ * Ditch unreliable references to skb->mac.raw.
+ *
+ * Revision 1.63  1999/08/28 11:33:09  rgb
+ * Check for null skb->mac pointer.
+ *
+ * Revision 1.62  1999/08/28 02:02:30  rgb
+ * Add Marc Boucher's fix for properly dealing with skb->sk.
+ *
+ * Revision 1.61  1999/08/27 05:23:05  rgb
+ * Clean up skb->data/raw/nh/h manipulation.
+ * Add Marc Boucher's mods to aid tcpdump.
+ * Add sanity checks to skb->raw/nh/h pointer copies in skb_copy_expand.
+ * Re-order hard_header stripping -- might be able to remove it...
+ *
+ * Revision 1.60  1999/08/26 20:01:02  rgb
+ * Tidy up compiler directives and macros.
+ * Re-enable ICMP for tunnels where inner_dst !=  outer_dst.
+ * Remove unnecessary skb->dev = physdev assignment affecting 2.2.x.
+ *
+ * Revision 1.59  1999/08/25 15:44:41  rgb
+ * Clean up from 2.2.x instrumenting for compilation under 2.0.36.
+ *
+ * Revision 1.58  1999/08/25 15:00:54  rgb
+ * Add dst cache code for 2.2.xx.
+ * Add sanity check for skb packet header pointers.
+ * Add/modify debugging instrumentation to *_start_xmit, *_hard_header and
+ * *_rebuild_header.
+ * Add neigh_* cache code.
+ * Change dev->type back to ARPHRD_TUNNEL.
+ *
+ * Revision 1.57  1999/08/17 21:50:23  rgb
+ * Fixed minor debug output bugs.
+ * Regrouped error recovery exit code.
+ * Added compiler directives to remove unwanted code and symbols.
+ * Shut off ICMP messages: to be refined to only send ICMP to remote systems.
+ * Add debugging code for output function addresses.
+ * Fix minor bug in (possibly unused) header_cache_bind function.
+ * Add device neighbour caching code.
+ * Change dev->type from ARPHRD_TUNNEL to physdev->type.
+ *
+ * Revision 1.56  1999/08/03 17:22:56  rgb
+ * Debug output clarification using KERN_* macros.  Other inactive changes
+ * added.
+ *
+ * Revision 1.55  1999/08/03 16:58:46  rgb
+ * Fix skb_copy_expand size bug.  Was getting incorrect size.
+ *
+ * Revision 1.54  1999/07/14 19:32:38  rgb
+ * Fix oversize packet crash and ssh stalling in 2.2.x kernels.
+ *
+ * Revision 1.53  1999/06/10 15:44:02  rgb
+ * Minor reformatting and clean-up.
+ *
+ * Revision 1.52  1999/05/09 03:25:36  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.51  1999/05/08 21:24:59  rgb
+ * Add casting to silence the 2.2.x compile.
+ *
+ * Revision 1.50  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.49  1999/04/29 15:18:52  rgb
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Fix undetected bug that might have tried to access a null pointer.
+ * Eliminate unnessessary usage of tdb_xform member to further switch
+ * away from the transform switch to the algorithm switch.
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.48  1999/04/16 15:38:00  rgb
+ * Minor rearrangement of freeing code to avoid memory leaks with impossible or
+ * rare situations.
+ *
+ * Revision 1.47  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.32.2.4  1999/04/13 21:00:18  rgb
+ * Ditch 'things I wish I had known before...'.
+ *
+ * Revision 1.32.2.3  1999/04/13 20:34:38  rgb
+ * Free skb after fragmentation.
+ * Use stats more effectively.
+ * Add I/F to mtu notch-down reporting.
+ *
+ * Revision 1.32.2.2  1999/04/02 04:26:14  rgb
+ * Backcheck from HEAD, pre1.0.
+ *
+ * Revision 1.46  1999/04/11 00:29:00  henry
+ * GPL boilerplate
+ *
+ * Revision 1.45  1999/04/07 15:42:01  rgb
+ * Fix mtu/ping bug AGAIN!
+ *
+ * Revision 1.44  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.43  1999/04/04 03:57:07  rgb
+ * ip_fragment() doesn't free the supplied skb.  Freed.
+ *
+ * Revision 1.42  1999/04/01 23:27:15  rgb
+ * Preload size of virtual mtu.
+ *
+ * Revision 1.41  1999/04/01 09:31:23  rgb
+ * Invert meaning of ICMP PMTUD config option and clarify.
+ * Code clean-up.
+ *
+ * Revision 1.40  1999/04/01 04:37:17  rgb
+ * SSH stalling bug fix.
+ *
+ * Revision 1.39  1999/03/31 23:44:28  rgb
+ * Don't send ICMP on DF and frag_off.
+ *
+ * Revision 1.38  1999/03/31 15:20:10  rgb
+ * Quiet down debugging.
+ *
+ * Revision 1.37  1999/03/31 08:30:31  rgb
+ * Add switch to shut off ICMP PMTUD packets.
+ *
+ * Revision 1.36  1999/03/31 05:44:47  rgb
+ * Keep PMTU reduction private.
+ *
+ * Revision 1.35  1999/03/27 15:13:02  rgb
+ * PMTU/fragmentation bug fix.
+ *
+ * Revision 1.34  1999/03/17 21:19:26  rgb
+ * Fix kmalloc nonatomic bug.
+ *
+ * Revision 1.33  1999/03/17 15:38:42  rgb
+ * Code clean-up.
+ * ESP_NULL IV bug fix.
+ *
+ * Revision 1.32  1999/03/01 20:44:25  rgb
+ * Code clean-up.
+ * Memory leak bug fix.
+ *
+ * Revision 1.31  1999/02/27 00:02:09  rgb
+ * Tune to report the MTU reduction once, rather than after every recursion
+ * through the encapsulating code, preventing tcp stream stalling.
+ *
+ * Revision 1.30  1999/02/24 20:21:01  rgb
+ * Reformat debug printk's.
+ * Fix recursive encapsulation, dynamic MTU bugs and add debugging code.
+ * Clean-up.
+ *
+ * Revision 1.29  1999/02/22 17:08:14  rgb
+ * Fix recursive encapsulation code.
+ *
+ * Revision 1.28  1999/02/19 18:27:02  rgb
+ * Improve DF, fragmentation and PMTU behaviour and add dynamic MTU discovery.
+ *
+ * Revision 1.27  1999/02/17 16:51:37  rgb
+ * Clean out unused cruft.
+ * Temporarily tone down volume of debug output.
+ * Temporarily shut off fragment rejection.
+ * Disabled temporary failed recursive encapsulation loop.
+ *
+ * Revision 1.26  1999/02/12 21:21:26  rgb
+ * Move KLIPS_PRINT to ipsec_netlink.h for accessibility.
+ *
+ * Revision 1.25  1999/02/11 19:38:27  rgb
+ * More clean-up.
+ * Add sanity checking for skb_copy_expand() to prevent kernel panics on
+ * skb_put() values out of range.
+ * Fix head/tailroom calculation causing skb_put() out-of-range values.
+ * Fix return values to prevent 'nonatomic alloc_skb' warnings.
+ * Allocate new skb iff needed.
+ * Added more debug statements.
+ * Make headroom depend on structure, not hard-coded values.
+ *
+ * Revision 1.24  1999/02/10 23:20:33  rgb
+ * Shut up annoying 'statement has no effect' compiler warnings with
+ * debugging compiled out.
+ *
+ * Revision 1.23  1999/02/10 22:36:30  rgb
+ * Clean-up obsolete, unused and messy code.
+ * Converted most IPSEC_DEBUG statements to KLIPS_PRINT macros.
+ * Rename ipsec_tunnel_do_xmit to ipsec_tunnel_start_xmit and eliminated
+ * original ipsec_tunnel_start_xmit.
+ * Send all packet with different inner and outer destinations directly to
+ * the attached physical device, rather than back through ip_forward,
+ * preventing disappearing routes problems.
+ * Do sanity checking before investing too much CPU in allocating new
+ * structures.
+ * Fail on IP header options: We cannot process them yet.
+ * Add some helpful comments.
+ * Use virtual device for parameters instead of physical device.
+ *
+ * Revision 1.22  1999/02/10 03:03:02  rgb
+ * Duh.  Fixed the TTL bug: forgot to update the checksum.
+ *
+ * Revision 1.21  1999/02/09 23:17:53  rgb
+ * Add structure members to ipsec_print_ip debug function.
+ * Temporarily fix TTL bug preventing tunnel mode from functioning.
+ *
+ * Revision 1.20  1999/02/09 00:14:25  rgb
+ * Add KLIPSPRINT macro.  (Not used yet, though.)
+ * Delete old ip_tunnel code (BADCODE).
+ * Decrement TTL in outgoing packet.
+ * Set TTL on new IPIP_TUNNEL to default, not existing packet TTL.
+ * Delete ethernet only feature and fix hard-coded hard_header_len.
+ *
+ * Revision 1.19  1999/01/29 17:56:22  rgb
+ * 64-bit re-fix submitted by Peter Onion.
+ *
+ * Revision 1.18  1999/01/28 22:43:24  rgb
+ * Fixed bug in ipsec_print_ip that caused an OOPS, found by P.Onion.
+ *
+ * Revision 1.17  1999/01/26 02:08:16  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ *
+ * Revision 1.16  1999/01/22 06:25:26  rgb
+ * Cruft clean-out.
+ * Added algorithm switch code.
+ * 64-bit clean-up.
+ * Passthrough on IPIP protocol, spi 0x0 fix.
+ * Enhanced debugging.
+ *
+ * Revision 1.15  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.14  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.13  1998/11/17 21:13:52  rgb
+ * Put IKE port bypass debug output in user-switched debug statements.
+ *
+ * Revision 1.12  1998/11/13 13:20:25  rgb
+ * Fixed ntohs bug in udp/500 hole for IKE.
+ *
+ * Revision 1.11  1998/11/10 08:01:19  rgb
+ * Kill tcp/500 hole,  keep udp/500 hole.
+ *
+ * Revision 1.10  1998/11/09 21:29:26  rgb
+ * If no eroute is found, discard packet and incr. tx_error.
+ *
+ * Revision 1.9  1998/10/31 06:50:00  rgb
+ * Add tcp/udp/500 bypass.
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.8  1998/10/27 00:34:31  rgb
+ * Reformat debug output of IP headers.
+ * Newlines added before calls to ipsec_print_ip.
+ *
+ * Revision 1.7  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.6  1998/10/09 04:31:35  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.5  1998/08/28 03:09:51  rgb
+ * Prevent kernel log spam with default route through ipsec.
+ *
+ * Revision 1.4  1998/08/05 22:23:09  rgb
+ * Change setdev return code to ENXIO for a non-existant physical device.
+ *
+ * Revision 1.3  1998/07/29 20:41:11  rgb
+ * Add ipsec_tunnel_clear to clear all tunnel attachments.
+ *
+ * Revision 1.2  1998/06/25 20:00:33  rgb
+ * Clean up #endif comments.
+ * Rename dev_ipsec to dev_ipsec0 for consistency.
+ * Document ipsec device fields.
+ * Make ipsec_tunnel_probe visible from rest of kernel for static linking.
+ * Get debugging report for *every* ipsec device initialisation.
+ * Comment out redundant code.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.8  1998/06/14 23:49:40  rgb
+ * Clarify version reporting on module loading.
+ *
+ * Revision 1.7  1998/05/27 23:19:20  rgb
+ * Added version reporting.
+ *
+ * Revision 1.6  1998/05/18 21:56:23  rgb
+ * Clean up for numerical consistency of output and cleaning up debug code.
+ *
+ * Revision 1.5  1998/05/12 02:44:23  rgb
+ * Clarifying 'no e-route to host' message.
+ *
+ * Revision 1.4  1998/04/30 15:34:35  rgb
+ * Enclosed most remaining debugging statements in #ifdef's to make it quieter.
+ *
+ * Revision 1.3  1998/04/21 21:28:54  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:24  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:12  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added transport mode.
+ * Changed the way routing is done.
+ * Lots of bug fixes.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_tunnel.h linux/net/ipsec/ipsec_tunnel.h
--- linux-noipsec/net/ipsec/ipsec_tunnel.h      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_tunnel.h      Fri Sep 15 13:37:02 2000
@@ -0,0 +1,206 @@
+/*
+ * IPSEC tunneling code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/*
+ * Heavily based on drivers/net/new_tunnel.c.  Lots
+ * of ideas also taken from the 2.1.x version of drivers/net/shaper.c
+ */
+
+struct ipsectunnelconf
+{
+       __u32   cf_cmd;
+       union
+       {
+               char    cfu_name[12];
+       } cf_u;
+#define cf_name cf_u.cfu_name
+};
+
+#define IPSEC_SET_DEV  (SIOCDEVPRIVATE)
+#define IPSEC_DEL_DEV  (SIOCDEVPRIVATE + 1)
+#define IPSEC_CLR_DEV  (SIOCDEVPRIVATE + 2)
+
+#ifdef __KERNEL__
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#  define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+struct ipsecpriv
+{
+       struct sk_buff_head sendq;
+       struct device *dev;
+       struct wait_queue *wait_queue;
+       char locked;
+       int  (*hard_start_xmit) (struct sk_buff *skb,
+               struct device *dev);
+       int  (*hard_header) (struct sk_buff *skb,
+               struct device *dev,
+               unsigned short type,
+               void *daddr,
+               void *saddr,
+               unsigned len);
+#ifdef NET_21
+       int  (*rebuild_header)(struct sk_buff *skb);
+#else /* NET_21 */
+       int  (*rebuild_header)(void *buff, struct device *dev,
+                       unsigned long raddr, struct sk_buff *skb);
+#endif /* NET_21 */
+       int  (*set_mac_address)(struct device *dev, void *addr);
+#ifndef NET_21
+       void (*header_cache_bind)(struct hh_cache **hhp, struct device *dev,
+                                unsigned short htype, __u32 daddr);
+#endif /* !NET_21 */
+       void (*header_cache_update)(struct hh_cache *hh, struct device *dev, unsigned char *  haddr);
+       struct net_device_stats *(*get_stats)(struct device *dev);
+       struct net_device_stats mystats;
+       int mtu;        /* What is the desired MTU? */
+};
+
+#define IPSEC_NUM_IF   4
+
+extern char ipsec_tunnel_c_version[];
+
+int ipsec_tunnel_init_devices(void);
+
+/* void */ int ipsec_tunnel_cleanup_devices(void);
+
+extern /* void */ int ipsec_init(void);
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_tunnel;
+extern int sysctl_ipsec_debug_verbose;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define DB_TN_INIT     0x0001
+#define DB_TN_PROCFS   0x0002
+#define DB_TN_XMIT     0x0010
+#define DB_TN_OHDR     0x0020
+#define DB_TN_CROUT    0x0040
+#define DB_TN_OXFS     0x0080
+#define DB_TN_REVEC    0x0100
+#endif /* CONFIG_IPSEC_DEBUG */
+
+/*
+ * $Log$
+ * Revision 1.20  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.19  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.18  2000/07/28 13:50:54  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.17  1999/11/19 01:12:15  rgb
+ * Purge unneeded proc_info prototypes, now that static linking uses
+ * dynamic proc_info registration.
+ *
+ * Revision 1.16  1999/11/18 18:51:00  rgb
+ * Changed all device registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ *
+ * Revision 1.15  1999/11/18 04:14:21  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ * Added Marc Boucher's 2.3.25 proc patches.
+ *
+ * Revision 1.14  1999/05/25 02:50:10  rgb
+ * Fix kernel version macros for 2.0.x static linking.
+ *
+ * Revision 1.13  1999/05/25 02:41:06  rgb
+ * Add ipsec_klipsdebug support for static linking.
+ *
+ * Revision 1.12  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.11  1999/04/29 15:19:50  rgb
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.10  1999/04/16 16:02:39  rgb
+ * Bump up macro to 4 ipsec I/Fs.
+ *
+ * Revision 1.9  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.5.2.1  1999/04/02 04:26:14  rgb
+ * Backcheck from HEAD, pre1.0.
+ *
+ * Revision 1.8  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/03/31 05:44:48  rgb
+ * Keep PMTU reduction private.
+ *
+ * Revision 1.5  1999/02/10 22:31:20  rgb
+ * Change rebuild_header member to reflect generality of link layer.
+ *
+ * Revision 1.4  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.3  1998/07/29 20:42:46  rgb
+ * Add a macro for clearing all tunnel devices.
+ * Rearrange structures and declarations for sharing with userspace.
+ *
+ * Revision 1.2  1998/06/25 20:01:45  rgb
+ * Make prototypes available for ipsec_init and ipsec proc_dir_entries
+ * for static linking.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.3  1998/05/18 21:51:50  rgb
+ * Added macros for num of I/F's and a procfs debug switch.
+ *
+ * Revision 1.2  1998/04/21 21:29:09  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:13  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:05  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added transport mode.
+ * Changed the way routing is done.
+ * Lots of bug fixes.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_xform.c linux/net/ipsec/ipsec_xform.c
--- linux-noipsec/net/ipsec/ipsec_xform.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_xform.c       Mon Nov  6 05:32:08 2000
@@ -0,0 +1,1178 @@
+/*
+ * Common routines for IPSEC transformations.
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <linux/random.h>      /* get_random_bytes() */
+#include <freeswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* SPINLOCK_23 */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#endif
+#include <asm/checksum.h>
+#include <net/ip.h>
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+#include "ipsec_ipe4.h"
+#include "ipsec_ah.h"
+#include "ipsec_esp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef CONFIG_IPSEC_DEBUG
+int debug_xform = 0;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#define SENDERR(_x) do { len = -(_x); goto errlab; } while (0)
+
+extern int des_set_key(caddr_t, caddr_t);
+
+struct xformsw xformsw[] = {
+{ XF_IP4,              0,              "IPv4_Encapsulation"},
+{ XF_AHHMACMD5,                XFT_AUTH,       "HMAC_MD5_Authentication"},
+{ XF_AHHMACSHA1,       XFT_AUTH,       "HMAC_SHA-1_Authentication"},
+{ XF_ESP3DES,          XFT_CONF,       "3DES_Encryption"},
+{ XF_ESP3DESMD596,     XFT_CONF,       "3DES-MD5-96_Encryption"},
+{ XF_ESP3DESSHA196,    XFT_CONF,       "3DES-SHA1-96_Encryption"},
+{ XF_ESPNULLMD596,     XFT_CONF,       "NULL-MD5-96_ESP_*Plaintext*"},
+{ XF_ESPNULLSHA196,    XFT_CONF,       "NULL-SHA1-96_ESP_*Plaintext*"},
+};
+
+struct tdb *tdbh[TDB_HASHMOD];
+#ifdef SPINLOCK
+spinlock_t tdb_lock = SPIN_LOCK_UNLOCKED;
+#else /* SPINLOCK */
+spinlock_t tdb_lock;
+#endif /* SPINLOCK */
+struct xformsw *xformswNXFORMSW = &xformsw[sizeof(xformsw)/sizeof(xformsw[0])];
+
+int
+ipsec_tdbinit(void)
+{
+       int i;
+
+       for(i = 1; i < TDB_HASHMOD; i++) {
+               tdbh[i] = NULL;
+       }
+       return 0;
+}
+
+struct tdb *
+gettdb(struct sa_id *said)
+{
+       int hashval;
+       struct tdb *tdbp;
+        char sa[SATOA_BUF];
+
+       if(!said) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:gettdb: null pointer passed in!\n");
+               return NULL;
+       }
+
+       satoa(*said, 0, sa, SATOA_BUF);
+
+       hashval = (said->spi+said->dst.s_addr+said->proto) % TDB_HASHMOD;
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:gettdb: linked entry in tdb table for hash=%d of SA:%s requested.\n",
+                   hashval, sa);
+
+       if(!(tdbp = tdbh[hashval])) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:gettdb: no entries in tdb table for hash=%d of SA:%s.\n",
+                           hashval, sa);
+               return NULL;
+       }
+
+       for (; tdbp; tdbp = tdbp->tdb_hnext) {
+               if ((tdbp->tdb_said.spi == said->spi) &&
+                   (tdbp->tdb_said.dst.s_addr == said->dst.s_addr) &&
+                   (tdbp->tdb_said.proto == said->proto)) {
+                       return tdbp;
+               }
+       }
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:gettdb: no entry in linked list for hash=%d of SA:%s.\n",
+                   hashval, sa);
+       return NULL;
+}
+
+/* void */
+int
+puttdb(struct tdb *tdbp)
+{
+       int error = 0;
+       unsigned int hashval;
+
+       if(!tdbp) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:puttdb: null pointer passed in!\n");
+               return -ENODATA;
+       }
+       hashval = ((tdbp->tdb_said.spi + tdbp->tdb_said.dst.s_addr + tdbp->tdb_said.proto) % TDB_HASHMOD);
+
+       spin_lock_bh(&tdb_lock);
+       
+       tdbp->tdb_hnext = tdbh[hashval];
+       tdbh[hashval] = tdbp;
+       
+       spin_unlock_bh(&tdb_lock);
+
+       return error;
+}
+
+/* This tdb better be locked before it is handed in, or races might
+ * happen */
+
+/* void */
+int
+deltdb(struct tdb *tdbp)
+{
+       unsigned int hashval;
+       struct tdb *tdbtp;
+        char sa[SATOA_BUF];
+
+       if(!tdbp) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:deltdb: null pointer passed in!\n");
+               return -ENODATA;
+       }
+       
+       satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+       if(tdbp->tdb_inext || tdbp->tdb_onext) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:deltdb: SA:%s still linked!\n",
+                           sa);
+               return -EMLINK;
+       }
+       
+       hashval = ((tdbp->tdb_said.spi + tdbp->tdb_said.dst.s_addr + tdbp->tdb_said.proto) % TDB_HASHMOD);
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:deltdb: deleting SA:%s, hashval=%d.\n",
+                   sa, hashval);
+       if(!tdbh[hashval]) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:deltdb: no entries in tdb table for hash=%d of SA:%s.\n",
+                           hashval, sa);
+               return -ENOENT;
+       }
+       
+       if (tdbp == tdbh[hashval]) {
+               tdbh[hashval] = tdbh[hashval]->tdb_hnext;
+               tdbp->tdb_hnext = NULL;
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:deltdb: successfully deleted first tdb in chain.\n");
+               return 0;
+       } else {
+               for (tdbtp = tdbh[hashval]; tdbtp; tdbtp = tdbtp->tdb_hnext) {
+                       if (tdbtp->tdb_hnext == tdbp) {
+                               tdbtp->tdb_hnext = tdbp->tdb_hnext;
+                               tdbp->tdb_hnext = NULL;
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:deltdb: successfully "
+                                           "deleted link in tdb chain.\n");
+                               return 0;
+                       }
+               }
+       }
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:deltdb: no entries in linked list for hash=%d of SA:%s.\n",
+                   hashval, sa);
+       return -ENOENT;
+}
+
+/* This tdb better be locked before it is handed in, or races might
+ * happen */
+
+int
+deltdbchain(struct tdb *tdbp)
+{
+       struct tdb *tdbdel;
+       int error = 0;
+        char sa[SATOA_BUF];
+
+       if(!tdbp) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:deltdbchain: null pointer passed in!\n");
+               return -ENODATA;
+       }
+
+       satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:deltdbchain: passed SA:%s\n", sa);
+       while(tdbp->tdb_onext) {
+               tdbp = tdbp->tdb_onext;
+       }
+
+       while(tdbp) {
+               /* XXX send a pfkey message up to advise of deleted TDB */
+               satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:deltdbchain: unlinking and delting SA:%s", sa);
+               tdbdel = tdbp;
+               tdbp = tdbp->tdb_inext;
+               if(tdbp) {
+                       satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+                       KLIPS_PRINT(debug_xform,
+                                   ", inext=%s", sa);
+                       tdbdel->tdb_inext = NULL;
+                       tdbp->tdb_onext = NULL;
+               }
+               KLIPS_PRINT(debug_xform,
+                           ".\n");
+               if((error = deltdb(tdbdel))) {
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:deltdbchain: "
+                                   "deltdb returned error %d.\n", -error);
+                       return error;
+               }
+               if((error = ipsec_tdbwipe(tdbdel))) {
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:deltdbchain: "
+                                   "ipsec_tdbwipe returned error %d.\n", -error);
+                       return error;
+               }
+       }
+       return error;
+}
+
+#if 0
+int
+tdb_init(struct tdb *tdbp, struct encap_msghdr *em)
+{
+       int alg;
+       struct xformsw *xsp;
+       int len;
+        int i;
+#if defined(CONFIG_IPSEC_ENC_3DES)
+        int error;
+#endif /* CONFIG_IPSEC_ENC_3DES */
+
+        char sa[SATOA_BUF];
+        size_t sa_len;
+
+       if(!tdbp || !em) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:tdb_init: null pointer passed in!\n");
+               SENDERR(ENODATA);
+       }
+
+       sa_len = satoa(em->em_said, 0, sa, SATOA_BUF);
+
+        KLIPS_PRINT(debug_esp,
+                   "klips_debug:tdb_init: (algo_switch defined) called for SA:%s\n", sa);
+       alg = em->em_alg;
+       
+       for (xsp = xformsw; xsp < xformswNXFORMSW; xsp++) {
+               if (xsp->xf_type == alg) {
+                       KLIPS_PRINT(debug_netlink,
+                                   "klips_debug:tdb_init: called with tdbp=0x%p, xsp=0x%p, em=0x%p\n",
+                                   tdbp, xsp, em);
+                       KLIPS_PRINT(debug_netlink,
+                                   "klips_debug:tdb_init: calling init routine of %s\n",
+                                   xsp->xf_name);
+                       tdbp->tdb_xform = xsp;
+                       tdbp->tdb_replaywin_lastseq = 0;
+                       tdbp->tdb_replaywin_bitmap = 0;
+                       /* check size of message here XXX */
+                       switch(alg) {
+#ifdef CONFIG_IPSEC_IPIP
+                       case XF_IP4: {
+                               struct ipe4_xdata *xd;
+                               xd = (struct ipe4_xdata *)(em->em_dat);
+
+                               tdbp->tdb_authalg = AH_NONE;
+                               tdbp->tdb_encalg = ESP_NONE;
+                               
+                               if((tdbp->tdb_addr_s = (struct sockaddr*)
+                                  kmalloc((tdbp->tdb_addr_s_size = sizeof(struct sockaddr_in)),
+                                          GFP_ATOMIC)) == NULL) {
+                                       SENDERR(ENOMEM);
+                               }
+                               if((tdbp->tdb_addr_d = (struct sockaddr*)
+                                  kmalloc((tdbp->tdb_addr_d_size = sizeof(struct sockaddr_in)),
+                                          GFP_ATOMIC)) == NULL) {
+                                       SENDERR(ENOMEM);
+                               }
+                               
+                               /* might want to use a different structure here, or set sin_family and sin_port */
+                               ((struct sockaddr_in*)(tdbp->tdb_addr_s))->sin_addr = xd->i4_src;
+                               ((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr = xd->i4_dst;
+                       }
+                               break;
+#endif /* !CONFIG_IPSEC_IPIP */
+
+#ifdef CONFIG_IPSEC_AH
+
+# ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                       case XF_AHHMACMD5: {
+                               struct ahhmacmd5_edata *ed;
+                               unsigned char kb[AHMD596_BLKLEN];
+                               MD5_CTX *ictx;
+                               MD5_CTX *octx;
+
+                               ed = (struct ahhmacmd5_edata *)em->em_dat;
+
+                               tdbp->tdb_authalg = AH_MD5;
+                               tdbp->tdb_encalg = ESP_NONE;
+                               
+                               if (em->em_msglen - EMT_SETSPI_FLEN > sizeof (struct ahhmacmd5_edata))
+                                       SENDERR(EINVAL);
+                               
+                               if (ed->ame_klen != AHMD596_KLEN) {
+                                       KLIPS_PRINT(debug_ah,
+                                                   "klips_debug:tdb_init: incorrect key size: %d"
+                                                   "-- must be %d octets (bytes)\n",
+                                                   ed->ame_klen, AHMD596_KLEN);
+                                       SENDERR(EINVAL);
+                               }
+                               
+                               if (ed->ame_alen != AHMD596_ALEN) {
+                                       KLIPS_PRINT(debug_ah,
+                                                   "klips_debug:tdb_init: authenticator size: %d"
+                                                   " -- must be %d octets (bytes)\n",
+                                                   ed->ame_alen, AHMD596_ALEN);
+                                       SENDERR(EINVAL);
+                               }
+                               
+                               KLIPS_PRINT(debug_ah,
+                                           "klips_debug:tdb_init: hmac md5-96 key is 0x%08x %08x %08x %08x\n",
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+0)),
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+1)),
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+2)),
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+3)));
+                               
+                               tdbp->tdb_key_bits_a = ed->ame_klen;
+                               tdbp->tdb_auth_bits = ed->ame_alen * 8;
+                               
+                               if(ed->ame_ooowin > 64) {
+                                       KLIPS_PRINT(debug_ah,
+                                                   "klips_debug:tdb_init: replay window size: %d"
+                                                   " -- must be 0 <= size <= 64\n",
+                                                   ed->ame_ooowin);
+                                       SENDERR(EINVAL);
+                               }
+                               tdbp->tdb_replaywin = ed->ame_ooowin;
+                               tdbp->tdb_replaywin_lastseq = tdbp->tdb_replaywin_bitmap = 0;
+                               
+                               if((tdbp->tdb_key_a = (caddr_t)
+                                   kmalloc((tdbp->tdb_key_a_size = sizeof(struct md5_ctx)),
+                                           GFP_ATOMIC)) == NULL) {
+                                       SENDERR(ENOMEM);
+                               }
+
+                               for (i = 0; i < ed->ame_klen; i++) {
+                                       kb[i] = ed->ame_key[i] ^ HMAC_IPAD;
+                               }
+                               for (; i < AHMD596_BLKLEN; i++) {
+                                       kb[i] = HMAC_IPAD;
+                               }
+
+                               ictx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->ictx);
+                               MD5Init(ictx);
+                               MD5Update(ictx, kb, AHMD596_BLKLEN);
+
+                               for (i = 0; i < AHMD596_BLKLEN; i++)
+                                       kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+
+                               octx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->octx);
+                               MD5Init(octx);
+                               MD5Update(octx, kb, AHMD596_BLKLEN);
+                               
+                               KLIPS_PRINT(debug_ah,
+                                           "klips_debug:tdb_init: MD5 ictx=0x%08x %08x %08x %08x"
+                                           " octx=0x%08x %08x %08x %08x\n",
+                                           ((__u32*)ictx)[0],
+                                           ((__u32*)ictx)[1],
+                                           ((__u32*)ictx)[2],
+                                           ((__u32*)ictx)[3],
+                                           ((__u32*)octx)[0],
+                                           ((__u32*)octx)[1],
+                                           ((__u32*)octx)[2],
+                                           ((__u32*)octx)[3] );
+                               
+                               /* zero key buffer -- paranoid */
+                               memset(kb, 0, sizeof(kb));
+                               memset((caddr_t)&(ed->ame_key), 0, ed->ame_klen);
+                       }
+                               break;
+# endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+# ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                       case XF_AHHMACSHA1: {
+                               struct ahhmacsha1_edata *ed;
+                               unsigned char kb[AHSHA196_BLKLEN];
+                               SHA1_CTX *ictx;
+                               SHA1_CTX *octx;
+
+                               ed = (struct ahhmacsha1_edata *)em->em_dat;
+                               
+                               tdbp->tdb_authalg = AH_SHA;
+                               tdbp->tdb_encalg = ESP_NONE;
+                               
+                               if (em->em_msglen - EMT_SETSPI_FLEN > sizeof (struct ahhmacsha1_edata))
+                                       SENDERR(EINVAL);
+                               
+                               if (ed->ame_klen != AHSHA196_KLEN) {
+                                       KLIPS_PRINT(debug_ah,
+                                                   "klips_debug:tdb_init: incorrect key size: %d"
+                                                   "-- must be %d octets (bytes)\n",
+                                                   ed->ame_klen, AHSHA196_KLEN);
+                                       SENDERR(EINVAL);
+                               }
+                               
+                               if (ed->ame_alen != AHSHA196_ALEN) {
+                                       KLIPS_PRINT(debug_ah,
+                                                   "klips_debug:tdb_init: authenticator size: %d"
+                                                   " -- must be %d octets (bytes)\n",
+                                                   ed->ame_alen, AHSHA196_ALEN);
+                                       SENDERR(EINVAL);
+                               }
+                               
+                               KLIPS_PRINT(debug_ah,
+                                           "klips_debug:tdb_init: hmac sha1-96 key is 0x%08x %08x %08x %08x\n",
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+0)),
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+1)),
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+2)),
+                                           (__u32)ntohl(*(((__u32 *)ed->ame_key)+3)));
+                               
+                               tdbp->tdb_key_bits_a = ed->ame_klen;
+                               tdbp->tdb_auth_bits = ed->ame_alen * 8;
+                               
+                               if(ed->ame_ooowin > 64) {
+                                       KLIPS_PRINT(debug_ah,
+                                                   "klips_debug:tdb_init: replay window size: %d"
+                                                   " -- must be 0 <= size <= 64\n",
+                                                   ed->ame_ooowin);
+                                       SENDERR(EINVAL);
+                               }
+                               tdbp->tdb_replaywin = ed->ame_ooowin;
+                               tdbp->tdb_replaywin_lastseq = tdbp->tdb_replaywin_bitmap = 0;
+                               
+                               if((tdbp->tdb_key_a = (caddr_t)
+                                   kmalloc((tdbp->tdb_key_a_size = (__u16)sizeof(struct sha1_ctx)),
+                                           GFP_ATOMIC)) == NULL) {
+                                       SENDERR(ENOMEM);
+                               }
+
+                               for (i = 0; i < ed->ame_klen; i++)
+                                       kb[i] = ed->ame_key[i] ^ HMAC_IPAD;
+                               for (; i < AHSHA196_BLKLEN; i++)
+                                       kb[i] = HMAC_IPAD;
+
+                               ictx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx);
+                               SHA1Init(ictx);
+                               SHA1Update(ictx, kb, AHSHA196_BLKLEN);
+                               
+                               for (i = 0; i < AHSHA196_BLKLEN; i++)
+                                       kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+
+                               octx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->octx);
+                               SHA1Init(octx);
+                               SHA1Update(octx, kb, AHSHA196_BLKLEN);
+                               
+                               KLIPS_PRINT(debug_ah,
+                                           "klips_debug:tdb_init: SHA1 ictx=0x%08x %08x %08x %08x"
+                                           " octx=0x%08x %08x %08x %08x\n", 
+                                           ((__u32*)ictx)[0],
+                                           ((__u32*)ictx)[1],
+                                           ((__u32*)ictx)[2],
+                                           ((__u32*)ictx)[3],
+                                           ((__u32*)octx)[0],
+                                           ((__u32*)octx)[1],
+                                           ((__u32*)octx)[2],
+                                           ((__u32*)octx)[3] );
+                               
+                               /* zero key buffer -- paranoid */
+                               memset(kb, 0, sizeof(kb));
+                               memset((caddr_t)&(ed->ame_key), 0, ed->ame_klen);
+                       }
+                               break;
+# endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+
+#endif /* CONFIG_IPSEC_AH */
+
+#ifdef CONFIG_IPSEC_ESP
+#ifdef CONFIG_IPSEC_ENC_3DES
+                       case XF_ESP3DES:
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                       case XF_ESP3DESMD596:
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                       case XF_ESP3DESSHA196:
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+#endif /* CONFIG_IPSEC_ENC_3DES */
+#ifdef CONFIG_IPSEC_ENC_NULL
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                       case XF_ESPNULLMD596:
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                       case XF_ESPNULLSHA196:
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+#endif /* CONFIG_IPSEC_ENC_NULL */
+                       {
+                               struct espblkrply_edata *ed;
+                               unsigned char kb[AHMD596_BLKLEN];
+                               ed = (struct espblkrply_edata *)em->em_dat;
+
+                               KLIPS_PRINT(debug_esp,
+                                           "klips_debug:tdb_init: "
+                                           "netlink data:"
+                                           " eklen=%d"
+                                           " aklen=%d"
+                                           " flags=%d"
+                                           " ooowin=%d.\n",
+                                           ed->eme_klen,
+                                           ed->ame_klen,
+                                           ed->eme_flags,
+                                           ed->eme_ooowin);
+
+                               if(ed->eme_ooowin > 64) {
+                                       KLIPS_PRINT(debug_esp,
+                                                   "klips_debug:tdb_init: replay window size: %d"
+                                                   "-- must be 0 <= size <= 64\n",
+                                                   ed->eme_ooowin);
+                                       SENDERR(EINVAL);
+                               }
+                               tdbp->tdb_replaywin = ed->eme_ooowin;
+
+                               switch(alg) {
+                               case XF_ESP3DES:
+                               case XF_ESP3DESMD596:
+                               case XF_ESP3DESSHA196:
+                                       if((tdbp->tdb_iv = (caddr_t)
+                                          kmalloc((tdbp->tdb_iv_size = EMT_ESPDES_IV_SZ), GFP_ATOMIC)) == NULL) {
+                                               SENDERR(ENOMEM);
+                                       }
+                                       get_random_bytes((void *)tdbp->tdb_iv, EMT_ESPDES_IV_SZ);
+                                       tdbp->tdb_iv_bits = tdbp->tdb_iv_size * 8;
+                                       break;
+                               default:
+                               }
+
+                               switch(alg) {
+#ifdef CONFIG_IPSEC_ENC_3DES
+                               case XF_ESP3DES:
+                               case XF_ESP3DESMD596:
+                               case XF_ESP3DESSHA196:
+                                       tdbp->tdb_encalg = ESP_3DES;
+                               
+                                       if (ed->eme_klen != EMT_ESP3DES_KEY_SZ) {
+                                               KLIPS_PRINT(debug_esp,
+                                                           "klips_debug:tdb_init: incorrect encryption "
+                                                           "key size: %d -- must be %d octets (bytes)\n",
+                                                           ed->eme_klen, EMT_ESP3DES_KEY_SZ);
+                                               SENDERR(EINVAL);
+                                       }
+
+                                       tdbp->tdb_key_bits_e = ed->eme_klen;
+
+                                       if((tdbp->tdb_key_e = (caddr_t)
+                                          kmalloc((tdbp->tdb_key_e_size = 3 * sizeof(struct des_eks)),
+                                                  GFP_ATOMIC)) == NULL) {
+                                               SENDERR(ENOMEM);
+                                       }
+
+                                       for(i = 0; i < 3; i++) {
+#if 0
+                                               KLIPS_PRINT(debug_esp,
+                                                           "klips_debug:tdb_init: 3des key %d/3 is 0x%08lx%08lx\n",
+                                                           i + 1,
+                                                           ntohl(*((__u32 *)ed->eme_key + i * 2)),
+                                                           ntohl(*((__u32 *)ed->eme_key + i * 2 + 1)));
+#endif
+                                               error = des_set_key((caddr_t)(ed->eme_key) + EMT_ESPDES_KEY_SZ * i,
+                                                                   (caddr_t)&((struct des_eks*)(tdbp->tdb_key_e))[i]);
+                                               if (error == -1)
+                                                       printk("klips_debug:tdb_init: parity error in des key %d/3\n", i + 1);
+                                               else if (error == -2)
+                                                       printk("klips_debug:tdb_init: illegal weak des key %d/3\n", i + 1);
+                                               if (error) {
+                                                       memset(tdbp->tdb_key_e, 0, 3 * sizeof(struct des_eks));
+                                                       kfree(tdbp->tdb_key_e);
+                                                       SENDERR(EINVAL);
+                                               }
+                                       }
+
+                                       break;
+#endif /* CONFIG_IPSEC_ENC_3DES */
+                               default:
+                                       tdbp->tdb_encalg = ESP_NULL;
+                               }
+
+                               switch(alg) {
+#ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+                               case XF_ESP3DESMD596:
+                               case XF_ESPNULLMD596:
+                               {
+                                       MD5_CTX *ictx;
+                                       MD5_CTX *octx;
+
+                                       tdbp->tdb_authalg = AH_MD5;
+                               
+                                       if (ed->ame_klen != AHMD596_KLEN) {
+                                               KLIPS_PRINT(debug_esp,
+                                                           "klips_debug:tdb_init: incorrect authorisation "
+                                                           " key size: %d -- must be %d octets (bytes)\n",
+                                                           ed->ame_klen, AHMD596_KLEN);
+                                               SENDERR(EINVAL);
+                                       }
+
+                                       tdbp->tdb_key_bits_a = ed->ame_klen;
+                                       tdbp->tdb_auth_bits = ed->ame_klen * 8;
+                       
+
+                                       if((tdbp->tdb_key_a = (caddr_t)
+                                          kmalloc((tdbp->tdb_key_a_size = sizeof(struct md5_ctx)),
+                                                  GFP_ATOMIC)) == NULL) {
+                                               SENDERR(ENOMEM);
+                                       }
+                                       KLIPS_PRINT(debug_esp,
+                                                   "klips_debug:tdb_init: hmac md5-96 key is 0x%08x %08x %08x %08x\n",
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+0)),
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+1)),
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+2)),
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+3)));
+                                       
+                                       for (i=0; i< AHMD596_KLEN; i++)
+                                               kb[i] = (*(((unsigned char *)(ed->ame_key)) + i)) ^ HMAC_IPAD;
+                                       /*
+                                        * HMAC_key is now contained in the first 128 bits of kb.
+                                        * Pad with zeroes and XOR with HMAC_IPAD to create the inner context
+                                        */
+                                       for (; i<AHMD596_BLKLEN; i++) {
+                                               kb[i] = HMAC_IPAD;
+                                       }
+
+                                       ictx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->ictx);
+                                       MD5Init(ictx);
+                                       MD5Update(ictx, kb, AHMD596_BLKLEN);
+                                       
+                                       for (i=0; i<AHMD596_BLKLEN; i++) {
+                                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                                       }
+                                       
+                                       octx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->octx);
+                                       MD5Init(octx);
+                                       MD5Update(octx, kb, AHMD596_BLKLEN);
+                                       
+                                       KLIPS_PRINT(debug_esp,
+                                                   "klips_debug:tdb_init: MD5 ictx=0x%08x %08x %08x %08x"
+                                                   " octx=0x%08x %08x %08x %08x\n",
+                                                   ((__u32*)ictx)[0],
+                                                   ((__u32*)ictx)[1],
+                                                   ((__u32*)ictx)[2],
+                                                   ((__u32*)ictx)[3],
+                                                   ((__u32*)octx)[0],
+                                                   ((__u32*)octx)[1],
+                                                   ((__u32*)octx)[2],
+                                                   ((__u32*)octx)[3] );
+
+                                       memset(kb, 0, sizeof(kb)); /* paranoid */
+                                       memset((caddr_t)&(ed->eme_key), 0, ed->eme_klen);
+                                       memset((caddr_t)&(ed->ame_key), 0, ed->ame_klen);
+                                       break;
+                               }
+#endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+#ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+                               case XF_ESPNULLSHA196:
+                               case XF_ESP3DESSHA196:
+                               {
+                                       SHA1_CTX *ictx;
+                                       SHA1_CTX *octx;
+
+                                       tdbp->tdb_authalg = AH_SHA;
+                               
+                                       if (ed->ame_klen != AHSHA196_KLEN) {
+                                               KLIPS_PRINT(debug_esp,
+                                                           "klips_debug:tdb_init: incorrect authorisation "
+                                                           " key size: %d -- must be %d octets (bytes)\n",
+                                                           ed->ame_klen, AHSHA196_KLEN);
+                                               SENDERR(EINVAL);
+                                       }
+
+                                       tdbp->tdb_key_bits_a = ed->ame_klen;
+                                       tdbp->tdb_auth_bits = ed->ame_klen * 8;
+
+                                       if((tdbp->tdb_key_a = (caddr_t)
+                                          kmalloc((tdbp->tdb_key_a_size = sizeof(struct sha1_ctx)),
+                                                  GFP_ATOMIC)) == NULL) {
+                                               SENDERR(ENOMEM);
+                                       }
+                                       KLIPS_PRINT(debug_esp,
+                                                   "klips_debug:tdb_init: hmac sha1-96 key is 0x%08x %08x %08x %08x\n",
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+0)),
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+1)),
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+2)),
+                                                   (__u32)ntohl(*(((__u32 *)ed->ame_key)+3)));
+
+                                       for (i=0; i< AHSHA196_KLEN; i++)
+                                               kb[i] = (*(((unsigned char *)(ed->ame_key)) + i)) ^ HMAC_IPAD;
+                                       /*
+                                        * HMAC_key is now contained in the first 128 bits of kb.
+                                        * Pad with zeroes and XOR with HMAC_IPAD to create the inner context
+                                        */
+                                       for (; i<AHSHA196_BLKLEN; i++)
+                                               kb[i] = HMAC_IPAD;
+                                       
+                                       ictx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx);
+                                       SHA1Init(ictx);
+                                       SHA1Update(ictx, kb, AHSHA196_BLKLEN);
+                               
+                                       for (i=0; i<AHSHA196_BLKLEN; i++)
+                                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                                       
+                                       octx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->octx);
+                                       SHA1Init(octx);
+                                       SHA1Update(octx, kb, AHSHA196_BLKLEN);
+                               
+                                       KLIPS_PRINT(debug_esp,
+                                                   "klips_debug:tdb_init: SHA1 ictx=0x%08x %08x %08x %08x"
+                                                   " octx=0x%08x %08x %08x %08x\n",
+                                                   ((__u32*)ictx)[0],
+                                                   ((__u32*)ictx)[1],
+                                                   ((__u32*)ictx)[2],
+                                                   ((__u32*)ictx)[3],
+                                                   ((__u32*)octx)[0],
+                                                   ((__u32*)octx)[1],
+                                                   ((__u32*)octx)[2],
+                                                   ((__u32*)octx)[3] );
+                                       
+                                       memset(kb, 0, sizeof(kb)); /* paranoid */
+                                       memset((caddr_t)&(ed->eme_key), 0, ed->eme_klen);
+                                       memset((caddr_t)&(ed->ame_key), 0, ed->ame_klen);
+                                       break;
+                               }
+#endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+                               case XF_ESP3DES:
+                                       tdbp->tdb_authalg = AH_NONE;
+                                       break;
+                               default:
+                               }
+                       }
+                               break;
+#endif /* !CONFIG_IPSEC_ESP */
+                       default:
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:tdb_init: alg=%d not configured\n", alg);
+                               SENDERR(ESOCKTNOSUPPORT);
+                       }
+                       SENDERR(0);
+               }
+       }
+       KLIPS_PRINT(debug_xform & DB_XF_INIT,
+                   "klips_debug:tdb_init: unregistered algorithm %d requested\n"
+                   "klips_debug:   trying to setup SA:%s\n", alg, sa);
+       SENDERR(EINVAL);
+errlab:
+       return len;
+}
+#endif
+
+int 
+ipsec_tdbcleanup(__u8 proto)
+{
+       int i;
+       int error = 0;
+       struct tdb *tdbp, **tdbprev, *tdbdel;
+        char sa[SATOA_BUF];
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_tdbcleanup: cleaning up proto=%d.\n", proto);
+
+       spin_lock_bh(&tdb_lock);
+
+       for (i = 0; i < TDB_HASHMOD; i++) {
+               tdbprev = &(tdbh[i]);
+               tdbp = tdbh[i];
+               for(; tdbp;) {
+                       satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:ipsec_tdbcleanup: checking SA:%s, hash=%d",
+                                   sa, i);
+                       tdbdel = tdbp;
+                       tdbp = tdbdel->tdb_hnext;
+                       if(tdbp) {
+                               satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+                               KLIPS_PRINT(debug_xform,
+                                           ", hnext=%s", sa);
+                       }
+                       if(*tdbprev) {
+                               satoa((*tdbprev)->tdb_said, 0, sa, SATOA_BUF);
+                               KLIPS_PRINT(debug_xform,
+                                           ", *tdbprev=%s", sa);
+                               if((*tdbprev)->tdb_hnext) {
+                                       satoa((*tdbprev)->tdb_hnext->tdb_said, 0, sa, SATOA_BUF);
+                                       KLIPS_PRINT(debug_xform,
+                                                   ", *tdbprev->tdb_hnext=%s", sa);
+                               }
+                       }
+                       KLIPS_PRINT(debug_xform,
+                                   ".\n");
+                       if(!proto || (proto == tdbdel->tdb_said.proto)) {
+                               satoa(tdbdel->tdb_said, 0, sa, SATOA_BUF);
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_tdbcleanup: deleting SA chain:%s.\n",
+                                           sa);
+                               /* *tdbprev = tdbdel->tdb_hnext; */
+                               if((error = deltdbchain(tdbdel))) {
+                                       goto errlab;
+                               }
+                               tdbprev = &(tdbh[i]);
+                               tdbp = tdbh[i];
+
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_tdbcleanup: deleted SA chain:%s", sa);
+                               if(tdbp) {
+                                       satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+                                       KLIPS_PRINT(debug_xform,
+                                                   ", tdbh[%d]=%s", i, sa);
+                               }
+                               if(*tdbprev) {
+                                       satoa((*tdbprev)->tdb_said, 0, sa, SATOA_BUF);
+                                       KLIPS_PRINT(debug_xform,
+                                                   ", *tdbprev=%s", sa);
+                                       if((*tdbprev)->tdb_hnext) {
+                                               satoa((*tdbprev)->tdb_hnext->tdb_said, 0, sa, SATOA_BUF);
+                                               KLIPS_PRINT(debug_xform,
+                                                           ", *tdbprev->tdb_hnext=%s", sa);
+                                       }
+                               }
+                               KLIPS_PRINT(debug_xform,
+                                           ".\n");
+                       } else {
+                               tdbprev = &tdbdel;
+                       }
+               }
+       }
+ errlab:
+
+       spin_unlock_bh(&tdb_lock);
+
+       return(-error);
+}
+
+int
+ipsec_tdbwipe(struct tdb *tdbp)
+{
+       if(!tdbp) {
+               return -1;
+       }
+
+       if(tdbp->tdb_addr_s) {
+               memset((caddr_t)(tdbp->tdb_addr_s), 0, tdbp->tdb_addr_s_size);
+               kfree(tdbp->tdb_addr_s);
+       }
+       tdbp->tdb_addr_s = NULL;
+
+       if(tdbp->tdb_addr_d) {
+               memset((caddr_t)(tdbp->tdb_addr_d), 0, tdbp->tdb_addr_d_size);
+               kfree(tdbp->tdb_addr_d);
+       }
+       tdbp->tdb_addr_d = NULL;
+
+       if(tdbp->tdb_addr_p) {
+               memset((caddr_t)(tdbp->tdb_addr_p), 0, tdbp->tdb_addr_p_size);
+               kfree(tdbp->tdb_addr_p);
+       }
+       tdbp->tdb_addr_p = NULL;
+
+       if(tdbp->tdb_key_a) {
+               memset((caddr_t)(tdbp->tdb_key_a), 0, tdbp->tdb_key_a_size);
+               kfree(tdbp->tdb_key_a);
+       }
+       tdbp->tdb_key_a = NULL;
+
+       if(tdbp->tdb_key_e) {
+               memset((caddr_t)(tdbp->tdb_key_e), 0, tdbp->tdb_key_e_size);
+               kfree(tdbp->tdb_key_e);
+       }
+       tdbp->tdb_key_e = NULL;
+
+       if(tdbp->tdb_iv) {
+               memset((caddr_t)(tdbp->tdb_iv), 0, tdbp->tdb_iv_size);
+               kfree(tdbp->tdb_iv);
+       }
+       tdbp->tdb_iv = NULL;
+
+       if(tdbp->tdb_ident_data_s) {
+               memset((caddr_t)(tdbp->tdb_ident_data_s),
+                      0,
+                      tdbp->tdb_ident_len_s * IPSEC_PFKEYv2_ALIGN);
+               kfree(tdbp->tdb_ident_data_s);
+       }
+       tdbp->tdb_ident_data_s = NULL;
+
+       if(tdbp->tdb_ident_data_d) {
+               memset((caddr_t)(tdbp->tdb_ident_data_d),
+                      0,
+                      tdbp->tdb_ident_len_d * IPSEC_PFKEYv2_ALIGN);
+               kfree(tdbp->tdb_ident_data_d);
+       }
+       tdbp->tdb_ident_data_d = NULL;
+
+       memset((caddr_t)tdbp, 0, sizeof(*tdbp));
+       kfree(tdbp);
+       tdbp = NULL;
+
+       return 0;
+}
+
+/*
+ * $Log$
+ * Revision 1.47  2000/11/06 04:32:08  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ *
+ * Revision 1.46  2000/09/20 16:21:57  rgb
+ * Cleaned up ident string alloc/free.
+ *
+ * Revision 1.45  2000/09/08 19:16:51  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.44  2000/08/30 05:29:04  rgb
+ * Compiler-define out no longer used tdb_init() in ipsec_xform.c.
+ *
+ * Revision 1.43  2000/08/18 21:30:41  rgb
+ * Purged all tdb_spi, tdb_proto and tdb_dst macros.  They are unclear.
+ *
+ * Revision 1.42  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.41  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.40  2000/06/28 05:50:11  rgb
+ * Actually set iv_bits.
+ *
+ * Revision 1.39  2000/05/10 23:11:09  rgb
+ * Added netlink debugging output.
+ * Added a cast to quiet down the ntohl bug.
+ *
+ * Revision 1.38  2000/05/10 19:18:42  rgb
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.37  2000/03/16 14:04:59  rgb
+ * Hardwired CONFIG_IPSEC_PFKEYv2 on.
+ *
+ * Revision 1.36  2000/01/26 10:11:28  rgb
+ * Fixed spacing in error text causing run-in words.
+ *
+ * Revision 1.35  2000/01/21 06:17:16  rgb
+ * Tidied up compiler directive indentation for readability.
+ * Added ictx,octx vars for simplification.(kravietz)
+ * Added macros for HMAC padding magic numbers.(kravietz)
+ * Fixed missing key length reporting bug.
+ * Fixed bug in tdbwipe to return immediately on NULL tdbp passed in.
+ *
+ * Revision 1.34  1999/12/08 00:04:19  rgb
+ * Fixed SA direction overwriting bug for netlink users.
+ *
+ * Revision 1.33  1999/12/01 22:16:44  rgb
+ * Minor formatting changes in ESP MD5 initialisation.
+ *
+ * Revision 1.32  1999/11/25 09:06:36  rgb
+ * Fixed error return messages, should be returning negative numbers.
+ * Implemented SENDERR macro for propagating error codes.
+ * Added debug message and separate error code for algorithms not compiled
+ * in.
+ *
+ * Revision 1.31  1999/11/23 23:06:26  rgb
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.30  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.29  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.28  1999/10/18 20:04:01  rgb
+ * Clean-out unused cruft.
+ *
+ * Revision 1.27  1999/10/03 19:01:03  rgb
+ * Spinlock support for 2.3.xx and 2.0.xx kernels.
+ *
+ * Revision 1.26  1999/10/01 16:22:24  rgb
+ * Switch from assignment init. to functional init. of spinlocks.
+ *
+ * Revision 1.25  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.24  1999/10/01 00:03:46  rgb
+ * Added tdb structure locking.
+ * Minor formatting changes.
+ * Add function to initialize tdb hash table.
+ *
+ * Revision 1.23  1999/05/25 22:42:12  rgb
+ * Add deltdbchain() debugging.
+ *
+ * Revision 1.22  1999/05/25 21:24:31  rgb
+ * Add debugging statements to deltdbchain().
+ *
+ * Revision 1.21  1999/05/25 03:51:48  rgb
+ * Refix error return code.
+ *
+ * Revision 1.20  1999/05/25 03:34:07  rgb
+ * Fix error return for flush.
+ *
+ * Revision 1.19  1999/05/09 03:25:37  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.18  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.17  1999/04/29 15:20:16  rgb
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Add sanity checking for null pointer arguments.
+ * Add debugging instrumentation.
+ * Add function deltdbchain() which will take care of unlinking,
+ * zeroing and deleting a chain of tdbs.
+ * Add a parameter to tdbcleanup to be able to delete a class of SAs.
+ * tdbwipe now actually zeroes the tdb as well as any of its pointed
+ * structures.
+ *
+ * Revision 1.16  1999/04/16 15:36:29  rgb
+ * Fix cut-and-paste error causing a memory leak in IPIP TDB freeing.
+ *
+ * Revision 1.15  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.14  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.13  1999/02/19 18:23:01  rgb
+ * Nix debug off compile warning.
+ *
+ * Revision 1.12  1999/02/17 16:52:16  rgb
+ * Consolidate satoa()s for space and speed efficiency.
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Clean out unused cruft.
+ * Ditch NET_IPIP dependancy.
+ * Loop for 3des key setting.
+ *
+ * Revision 1.11  1999/01/26 02:09:05  rgb
+ * Remove ah/esp/IPIP switching on include files.
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ * Clean up debug code when switched off.
+ * Remove references to INET_GET_PROTOCOL.
+ * Added code exclusion macros to reduce code from unused algorithms.
+ *
+ * Revision 1.10  1999/01/22 06:28:55  rgb
+ * Cruft clean-out.
+ * Put random IV generation in kernel.
+ * Added algorithm switch code.
+ * Enhanced debugging.
+ * 64-bit clean-up.
+ *
+ * Revision 1.9  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.8  1998/11/25 04:59:06  rgb
+ * Add conditionals for no IPIP tunnel code.
+ * Delete commented out code.
+ *
+ * Revision 1.7  1998/10/31 06:50:41  rgb
+ * Convert xform ASCII names to no spaces.
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.6  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.5  1998/10/09 04:32:19  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.4  1998/08/12 00:11:31  rgb
+ * Added new xform functions to the xform table.
+ * Fixed minor debug output spelling error.
+ *
+ * Revision 1.3  1998/07/09 17:45:31  rgb
+ * Clarify algorithm not available message.
+ *
+ * Revision 1.2  1998/06/23 03:00:51  rgb
+ * Check for presence of IPIP protocol if it is setup one way (we don't
+ * know what has been set up the other way and can only assume it will be
+ * symmetrical with the exception of keys).
+ *
+ * Revision 1.1  1998/06/18 21:27:51  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.3  1998/06/11 05:54:59  rgb
+ * Added transform version string pointer to xformsw initialisations.
+ *
+ * Revision 1.2  1998/04/21 21:28:57  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:13  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added new transforms.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/ipsec_xform.h linux/net/ipsec/ipsec_xform.h
--- linux-noipsec/net/ipsec/ipsec_xform.h       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/ipsec_xform.h       Mon Nov  6 05:30:40 2000
@@ -0,0 +1,359 @@
+/*
+ * Definitions relevant to IPSEC transformations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#include <freeswan.h>
+
+#define XF_NONE                        0       /* No transform set */
+#define XF_IP4                 1       /* IPv4 inside IPv4 */
+#define XF_AHMD5               2       /* AH MD5 */
+#define XF_AHSHA               3       /* AH SHA */
+#define XF_ESP3DES             5       /* ESP DES3-CBC */
+#define XF_AHHMACMD5           6       /* AH-HMAC-MD5 with opt replay prot */
+#define XF_AHHMACSHA1          7       /* AH-HMAC-SHA1 with opt replay prot */
+#define XF_ESP3DESMD5          9       /* triple DES, HMAC-MD-5, 128-bits of authentication */
+#define        XF_ESP3DESMD596         10      /* triple DES, HMAC-MD-5, 96-bits of authentication */
+#define        XF_ESPNULLMD596         12      /* NULL, HMAC-MD-5 with 96-bits of authentication */
+#define        XF_ESPNULLSHA196        13      /* NULL, HMAC-SHA-1 with 96-bits of authentication */
+#define        XF_ESP3DESSHA196        14      /* triple DES, HMAC-SHA-1, 96-bits of authentication */
+#define XF_IP6                 15      /* IPv6 inside IPv6 */
+#define XF_COMPDEFLATE         16      /* IPCOMP deflate */
+
+#define XF_CLR                 126     /* Clear SA table */
+#define XF_DEL                 127     /* Delete SA */
+
+/* IPsec AH transform values
+ * RFC 2407
+ * draft-ietf-ipsec-doi-tc-mib-02.txt
+ */
+
+#define AH_NONE                  0
+#define AH_MD5                   2
+#define AH_SHA                   3
+
+/* IPsec ESP transform values */
+
+#define ESP_NONE                0
+#define ESP_3DES                 3
+#define ESP_RC5                  4
+#define ESP_IDEA                 5
+#define ESP_CAST                 6
+#define ESP_BLOWFISH             7
+#define ESP_3IDEA                8
+#define ESP_RC4                 10
+#define ESP_NULL                11
+
+/* IPCOMP transform values */
+
+#define IPCOMP_NONE              0
+#define IPCOMP_OUI               1
+#define IPCOMP_DEFLAT            2
+#define IPCOMP_LZS               3
+#define IPCOMP_V42BIS            4
+
+#define XFT_AUTH       0x0001
+#define XFT_CONF       0x0100
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define DB_XF_INIT     0x0001
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef __KERNEL__
+/* 'struct tdb' should really be 64bit aligned... XXX */
+struct tdb                             /* tunnel descriptor block */
+{
+       struct tdb      *tdb_hnext;     /* next in hash chain */
+       struct tdb      *tdb_onext;     /* next in output */
+       struct tdb      *tdb_inext;     /* next in input (prev!) */
+       struct ifnet    *tdb_rcvif;     /* related rcv encap interface */
+       struct sa_id    tdb_said;       /* SA ID */
+       __u32   tdb_seq;        /* seq num of msg that set this SA */
+       __u32   tdb_pid;        /* PID of process that set this SA */
+       __u8            tdb_authalg;    /* auth algorithm for this SA */
+       __u8            tdb_encalg;     /* enc algorithm for this SA */
+
+       __u32           tdb_alg_errs;   /* number of algorithm errors */
+       __u32   tdb_auth_errs;  /* number of authentication errors */
+       __u32   tdb_encsize_errs;       /* number of encryption size errors */
+       __u32   tdb_encpad_errs;        /* number of encryption size errors */
+       __u32   tdb_replaywin_errs;     /* number of pkt sequence errors */
+
+       __u8            tdb_replaywin;  /* replay window size */
+       __u8            tdb_state;      /* state of SA */
+       __u32   tdb_replaywin_lastseq;  /* last pkt sequence num */
+       __u64   tdb_replaywin_bitmap;   /* bitmap of received pkts */
+       __u32   tdb_replaywin_maxdiff;  /* maximum pkt sequence difference */
+
+       __u32   tdb_flags;      /* generic xform flags */
+
+       __u32   tdb_lifetime_allocations_c;     /* see rfc2367 */
+       __u32   tdb_lifetime_allocations_s;
+       __u32   tdb_lifetime_allocations_h;
+       __u64   tdb_lifetime_bytes_c;
+       __u64   tdb_lifetime_bytes_s;
+       __u64   tdb_lifetime_bytes_h;
+       __u64   tdb_lifetime_addtime_c;
+       __u64   tdb_lifetime_addtime_s;
+       __u64   tdb_lifetime_addtime_h;
+       __u64   tdb_lifetime_usetime_c;
+       __u64   tdb_lifetime_usetime_s;
+       __u64   tdb_lifetime_usetime_h;
+       __u64   tdb_lifetime_packets_c;
+       __u64   tdb_lifetime_packets_s;
+       __u64   tdb_lifetime_packets_h;
+       __u64   tdb_lifetime_usetime_l; /* last time transform was used */
+       struct sockaddr *tdb_addr_s;    /* src sockaddr */
+       struct sockaddr *tdb_addr_d;    /* dst sockaddr */
+               struct sockaddr *tdb_addr_p;    /* proxy sockaddr */
+       __u16   tdb_addr_s_size;
+       __u16   tdb_addr_d_size;
+       __u16   tdb_addr_p_size;
+       __u16   tdb_key_bits_a; /* size of authkey in bits */
+       __u16   tdb_auth_bits;  /* size of authenticator in bits */
+       __u16   tdb_key_bits_e; /* size of enckey in bits */
+       __u16   tdb_iv_bits;    /* size of IV in bits */
+
+       __u8    tdb_iv_size;
+       __u16   tdb_key_a_size;
+       __u16   tdb_key_e_size;
+       caddr_t tdb_key_a;      /* authentication key */
+       caddr_t tdb_key_e;      /* encryption key */
+       caddr_t tdb_iv;         /* Initialisation Vector */
+       __u16   tdb_ident_type_s;       /* src identity type */
+       __u16   tdb_ident_type_d;       /* dst identity type */
+       __u64   tdb_ident_id_s; /* src identity id */
+       __u64   tdb_ident_id_d; /* dst identity id */
+       __u8    tdb_ident_len_s;        /* src identity type */
+       __u8    tdb_ident_len_d;        /* dst identity type */
+       caddr_t tdb_ident_data_s;       /* src identity data */
+       caddr_t tdb_ident_data_d;       /* dst identity data */
+#ifdef CONFIG_IPSEC_IPCOMP
+       __u16   tdb_comp_adapt_tries;   /* ipcomp self-adaption tries */
+       __u16   tdb_comp_adapt_skip;    /* ipcomp self-adaption to-skip */
+       __u64   tdb_comp_ratio_cbytes;  /* compressed bytes */
+       __u64   tdb_comp_ratio_dbytes;  /* decompressed (or uncompressed) bytes */
+#endif /* CONFIG_IPSEC_IPCOMP */
+#if 0
+       __u32   tdb_sens_dpd;
+       __u8    tdb_sens_sens_level;
+       __u8    tdb_sens_sens_len;
+       __u64*  tdb_sens_sens_bitmap;
+       __u8    tdb_sens_integ_level;
+       __u8    tdb_sens_integ_len;
+       __u64*  tdb_sens_integ_bitmap;
+#endif
+};
+
+#define PROTO2TXT(x) \
+       (x) == IPPROTO_AH ? "AH" : \
+       (x) == IPPROTO_ESP ? "ESP" : \
+       (x) == IPPROTO_IPIP ? "IPIP" : \
+       (x) == IPPROTO_COMP ? "COMP" : \
+       "UNKNOWN_proto"
+
+#if 0
+       (x)->tdb_said.proto == IPPROTO_AH ? "AH" : \
+       (x)->tdb_said.proto == IPPROTO_ESP ? "ESP" : \
+       (x)->tdb_said.proto == IPPROTO_IPIP ? "IPIP" : \
+       (x)->tdb_said.proto == IPPROTO_COMP ? "COMP" : \
+       "UNKNOWN_proto", \
+
+#endif
+#define TDB_XFORM_NAME(x) \
+       PROTO2TXT((x)->tdb_said.proto), \
+       (x)->tdb_said.proto == IPPROTO_COMP ? \
+               ((x)->tdb_encalg == SADB_X_CALG_DEFLATE ? \
+                "_DEFLATE" : "_UNKNOWN_comp") : \
+       (x)->tdb_encalg == ESP_NONE ? "" : \
+       (x)->tdb_encalg == ESP_3DES ? "_3DES" : \
+       (x)->tdb_encalg == ESP_NULL ? "_NULL_encr" : \
+       "_UNKNOWN_encr", \
+       (x)->tdb_authalg == AH_NONE ? "" : \
+       (x)->tdb_authalg == AH_MD5 ? "_HMAC_MD5" : \
+       (x)->tdb_authalg == AH_SHA ? "_HMAC_SHA1" : \
+       "_UNKNOWN_auth" \
+
+#define TDB_HASHMOD    257
+
+struct xformsw
+{
+       u_short         xf_type;        /* Unique ID of xform */
+       u_short         xf_flags;       /* secondary type reall) */
+       char            *xf_name;       /* human-readable name */
+};
+
+extern struct tdb *tdbh[TDB_HASHMOD];
+extern spinlock_t tdb_lock;
+extern struct xformsw xformsw[], *xformswNXFORMSW;
+
+extern int ipsec_tdbinit(void);
+extern struct tdb *gettdb(struct sa_id*);
+extern /* void */ int deltdb(struct tdb *);
+extern /* void */ int deltdbchain(struct tdb *);
+extern /* void */ int puttdb(struct tdb *);
+extern int tdb_init(struct tdb *, struct encap_msghdr *);
+extern int ipsec_tdbcleanup(__u8);
+extern int ipsec_tdbwipe(struct tdb *);
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_xform;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log$
+ * Revision 1.28  2000/11/06 04:30:40  rgb
+ * Add Svenning's adaptive content compression.
+ *
+ * Revision 1.27  2000/09/19 00:38:25  rgb
+ * Fixed algorithm name bugs introduced for ipcomp.
+ *
+ * Revision 1.26  2000/09/17 21:36:48  rgb
+ * Added proto2txt macro.
+ *
+ * Revision 1.25  2000/09/17 18:56:47  rgb
+ * Added IPCOMP support.
+ *
+ * Revision 1.24  2000/09/12 19:34:12  rgb
+ * Defined XF_IP6 from Gerhard for ipv6 tunnel support.
+ *
+ * Revision 1.23  2000/09/12 03:23:14  rgb
+ * Cleaned out now unused tdb_xform and tdb_xdata members of struct tdb.
+ *
+ * Revision 1.22  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.21  2000/09/01 18:32:43  rgb
+ * Added (disabled) sensitivity members to tdb struct.
+ *
+ * Revision 1.20  2000/08/30 05:31:01  rgb
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Kill remainder of tdb_xform, tdb_xdata, xformsw.
+ *
+ * Revision 1.19  2000/08/01 14:51:52  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.18  2000/01/21 06:17:45  rgb
+ * Tidied up spacing.
+ *
+ * Revision 1.17  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.16  1999/10/16 04:23:07  rgb
+ * Add stats for replaywin_errs, replaywin_max_sequence_difference,
+ * authentication errors, encryption size errors, encryption padding
+ * errors, and time since last packet.
+ *
+ * Revision 1.15  1999/10/16 00:29:11  rgb
+ * Added SA lifetime packet counting variables.
+ *
+ * Revision 1.14  1999/10/01 00:04:14  rgb
+ * Added tdb structure locking.
+ * Add function to initialize tdb hash table.
+ *
+ * Revision 1.13  1999/04/29 15:20:57  rgb
+ * dd return values to init and cleanup functions.
+ * Eliminate unnessessary usage of tdb_xform member to further switch
+ * away from the transform switch to the algorithm switch.
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Add a parameter to tdbcleanup to be able to delete a class of SAs.
+ *
+ * Revision 1.12  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.9.2.2  1999/04/13 20:35:57  rgb
+ * Fix spelling mistake in comment.
+ *
+ * Revision 1.9.2.1  1999/03/30 17:13:52  rgb
+ * Extend struct tdb to support pfkey.
+ *
+ * Revision 1.11  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.10  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.9  1999/01/26 02:09:31  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ *
+ * Revision 1.8  1999/01/22 06:29:35  rgb
+ * Added algorithm switch code.
+ * Cruft clean-out.
+ *
+ * Revision 1.7  1998/11/10 05:37:35  rgb
+ * Add support for SA direction flag.
+ *
+ * Revision 1.6  1998/10/19 14:44:29  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.5  1998/08/12 00:12:30  rgb
+ * Added macros for new xforms.  Added prototypes for new xforms.
+ *
+ * Revision 1.4  1998/07/28 00:04:20  rgb
+ * Add macro for clearing the SA table.
+ *
+ * Revision 1.3  1998/07/14 18:06:46  rgb
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.2  1998/06/23 03:02:19  rgb
+ * Created a prototype for ipsec_tdbcleanup when it was moved from
+ * ipsec_init.c.
+ *
+ * Revision 1.1  1998/06/18 21:27:51  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.4  1998/06/11 05:55:31  rgb
+ * Added transform version string pointer to xformsw structure definition.
+ * Added extern declarations for transform version strings.
+ *
+ * Revision 1.3  1998/05/18 22:02:54  rgb
+ * Modify the *_zeroize function prototypes to include one parameter.
+ *
+ * Revision 1.2  1998/04/21 21:29:08  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:14  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:06  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added new transforms.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/libdes/Makefile linux/net/ipsec/libdes/Makefile
--- linux-noipsec/net/ipsec/libdes/Makefile     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/Makefile     Fri Dec 15 15:02:26 2000
@@ -0,0 +1,246 @@
+# You must select the correct terminal control system to be used to
+# turn character echo off when reading passwords.  There a 5 systems
+# SGTTY   - the old BSD system
+# TERMIO  - most system V boxes
+# TERMIOS - SGI (ala IRIX).
+# VMS     - the DEC operating system
+# MSDOS   - we all know what it is :-)
+# read_pwd.c makes a reasonable guess at what is correct.
+
+# Targets
+# make          - twidle the options yourself :-)
+# make cc       - standard cc options
+# make gcc      - standard gcc options
+# make x86-elf  - linux-elf etc
+# make x86-out  - linux-a.out, FreeBSD etc
+# make x86-solaris
+# make x86-bdsi
+
+# If you are on a DEC Alpha, edit des.h and change the DES_LONG
+# define to 'unsigned int'.  I have seen this give a %20 speedup.
+
+OPTS0= -DLIBDES_LIT -DRAND -DTERMIO #-DNOCONST
+
+# Version 1.94 has changed the strings_to_key function so that it is
+# now compatible with MITs when the string is longer than 8 characters.
+# If you wish to keep the old version, uncomment the following line.
+# This will affect the -E/-D options on des(1).
+#OPTS1= -DOLD_STR_TO_KEY
+
+# There are 4 possible performance options
+# -DDES_PTR
+# -DDES_RISC1
+# -DDES_RISC2 (only one of DES_RISC1 and DES_RISC2)
+# -DDES_UNROLL
+# after the initial build, run 'des_opts' to see which options are best
+# for your platform.  There are some listed in options.txt
+#OPTS2= -DDES_PTR 
+#OPTS3= -DDES_RISC1 # or DES_RISC2
+#OPTS4= -DDES_UNROLL
+
+OPTS= $(OPTS0) $(OPTS1) $(OPTS2) $(OPTS3) $(OPTS4)
+
+MAKE=make -f Makefile
+#CC=cc
+#CFLAG= -O
+
+#CC=gcc
+#CFLAG= -O4 -funroll-loops -fomit-frame-pointer
+CFLAG=-fomit-frame-pointer
+
+CFLAGS=$(OPT_FLAGS) $(CFLAG)
+CPP=$(CC) -E
+AS=as
+
+# Assember version of des_encrypt*().
+DES_ENC=des_enc.o fcrypt_b.o           # normal C version
+#DES_ENC=asm/dx86-elf.o        asm/yx86-elf.o  # elf format x86
+#DES_ENC=asm/dx86-out.o        asm/yx86-out.o  # a.out format x86
+#DES_ENC=asm/dx86-sol.o        asm/yx86-sol.o  # solaris format x86 
+#DES_ENC=asm/dx86bsdi.o        asm/yx86basi.o  # bsdi format x86 
+
+LIBDIR=/usr/lib
+BINDIR=/usr/bin
+INCDIR=/usr/include
+MANDIR=/usr/share/man
+MAN1=1
+MAN3=3
+SHELL=/bin/sh
+OBJ_LIT=cbc_enc.o ecb_enc.o $(DES_ENC) fcrypt.o set_key.o
+OBJ_FULL=cbc_cksm.o $(OBJ_LIT) pcbc_enc.o \
+       xcbc_enc.o qud_cksm.o \
+       cfb64ede.o cfb64enc.o cfb_enc.o ecb3_enc.o \
+       enc_read.o enc_writ.o ofb64ede.o ofb64enc.o ofb_enc.o  \
+       rand_key.o read_pwd.o read2pwd.o rpc_enc.o  str2key.o supp.o
+
+GENERAL_LIT=COPYRIGHT INSTALL README VERSION Makefile des_crypt.man \
+       des.doc options.txt asm
+GENERAL_FULL=$(GENERAL_LIT) FILES Imakefile times vms.com KERBEROS MODES.DES \
+       des.man DES.pm DES.pod DES.xs Makefile.PL dess.cpp des3s.cpp \
+       Makefile.uni typemap t Makefile.ssl makefile.bc Makefile.lit \
+       des.org des_locl.org
+TESTING_LIT=   destest speed des_opts
+TESTING_FULL=  rpw $(TESTING_LIT)
+TESTING_SRC_LIT=destest.c speed.c des_opts.c
+TESTING_SRC_FULL=rpw.c $(TESTING_SRC_LIT)
+HEADERS_LIT=des_ver.h des.h des_locl.h podd.h sk.h spr.h
+HEADERS_FULL= $(HEADERS_LIT) rpc_des.h
+LIBDES_LIT=cbc_enc.c ecb_enc.c fcrypt.c set_key.c des_enc.c fcrypt_b.c
+LIBDES_FULL= cbc_cksm.c pcbc_enc.c qud_cksm.c \
+       cfb64ede.c cfb64enc.c cfb_enc.c ecb3_enc.c \
+       enc_read.c enc_writ.c ofb64ede.c ofb64enc.c ofb_enc.c  \
+       rand_key.c rpc_enc.c  str2key.c  supp.c \
+       xcbc_enc.c $(LIBDES_LIT) read_pwd.c read2pwd.c
+
+PERL=  des.pl testdes.pl doIP doPC1 doPC2 PC1 PC2 shifts.pl
+
+OBJ=   $(OBJ_LIT)
+GENERAL=$(GENERAL_LIT)
+TESTING=$(TESTING_LIT)
+TESTING_SRC=$(TESTING_SRC_LIT)
+HEADERS=$(HEADERS_LIT)
+LIBDES=        $(LIBDES_LIT)
+
+ALL=   $(GENERAL) $(TESTING_SRC) $(LIBDES) $(PERL) $(HEADERS)
+
+DLIB=  libdes.a
+
+all: $(DLIB) $(TESTING)
+
+cc:
+       $(MAKE) CC=cc CFLAGS="-O $(OPTS) $(CFLAG)" all
+
+gcc:
+       $(MAKE) CC=gcc CFLAGS="-O3 -fomit-frame-pointer $(OPTS) $(CFLAG)" all
+
+x86-elf:
+       $(MAKE) DES_ENC='asm/dx86-elf.o asm/yx86-elf.o' CC='$(CC)' CFLAGS="-DELF $(OPTS) $(CFLAG)" all
+
+x86-out:
+       $(MAKE) DES_ENC='asm/dx86-out.o asm/yx86-out.o' CC='$(CC)' CFLAGS="-DOUT $(OPTS) $(CFLAG)" all
+
+x86-solaris:
+       $(MAKE) DES_ENC='asm/dx86-sol.o asm/yx86-sol.o' CC='$(CC)' CFLAGS="-DSOL $(OPTS) $(CFLAG)" all
+
+x86-bsdi:
+       $(MAKE) DES_ENC='asm/dx86bsdi.o asm/yx86bsdi.o' CC='$(CC)' CFLAGS="-DBSDI $(OPTS) $(CFLAG)" all
+
+# elf
+asm/dx86-elf.o: asm/dx86unix.cpp
+       $(CPP) -DELF asm/dx86unix.cpp | $(AS) -o asm/dx86-elf.o
+
+asm/yx86-elf.o: asm/yx86unix.cpp
+       $(CPP) -DELF asm/yx86unix.cpp | $(AS) -o asm/yx86-elf.o
+
+# solaris
+asm/dx86-sol.o: asm/dx86unix.cpp
+       $(CC) -E -DSOL asm/dx86unix.cpp | sed 's/^#.*//' > asm/dx86-sol.s
+       as -o asm/dx86-sol.o asm/dx86-sol.s
+       rm -f asm/dx86-sol.s
+
+asm/yx86-sol.o: asm/yx86unix.cpp
+       $(CC) -E -DSOL asm/yx86unix.cpp | sed 's/^#.*//' > asm/yx86-sol.s
+       as -o asm/yx86-sol.o asm/yx86-sol.s
+       rm -f asm/yx86-sol.s
+
+# a.out
+asm/dx86-out.o: asm/dx86unix.cpp
+       $(CPP) -DOUT asm/dx86unix.cpp | $(AS) -o asm/dx86-out.o
+
+asm/yx86-out.o: asm/yx86unix.cpp
+       $(CPP) -DOUT asm/yx86unix.cpp | $(AS) -o asm/yx86-out.o
+
+# bsdi
+asm/dx86bsdi.o: asm/dx86unix.cpp
+       $(CPP) -DBSDI asm/dx86unix.cpp | $(AS) -o asm/dx86bsdi.o
+
+asm/yx86bsdi.o: asm/yx86unix.cpp
+       $(CPP) -DBSDI asm/yx86unix.cpp | $(AS) -o asm/yx86bsdi.o
+
+asm/dx86unix.cpp:
+       (cd asm; perl des-586.pl cpp >dx86unix.cpp)
+
+asm/yx86unix.cpp:
+       (cd asm; perl crypt586.pl cpp >yx86unix.cpp)
+
+test:  all
+       ./destest
+
+$(DLIB): $(OBJ)
+       /bin/rm -f $(DLIB)
+       ar cr $(DLIB) $(OBJ)
+       -if test -s /bin/ranlib; then /bin/ranlib $(DLIB); \
+       else if test -s /usr/bin/ranlib; then /usr/bin/ranlib $(DLIB); \
+       else exit 0; fi; fi
+
+des_opts: des_opts.o $(DLIB)
+       $(CC) $(CFLAGS) -o des_opts des_opts.o $(DLIB)
+
+destest: destest.o $(DLIB)
+       $(CC) $(CFLAGS) -o destest destest.o $(DLIB)
+
+rpw: rpw.o $(DLIB)
+       $(CC) $(CFLAGS) -o rpw rpw.o $(DLIB)
+
+speed: speed.o $(DLIB)
+       $(CC) $(CFLAGS) -o speed speed.o $(DLIB)
+
+des: des.o $(DLIB)
+       $(CC) $(CFLAGS) -o des des.o $(DLIB)
+
+tags:
+       ctags $(TESTING_SRC) $(LIBDES)
+
+tar_lit:
+       /bin/mv Makefile Makefile.tmp
+       /bin/cp Makefile.lit Makefile
+       tar chf libdes-l.tar $(LIBDES_LIT) $(HEADERS_LIT) \
+               $(GENERAL_LIT) $(TESTING_SRC_LIT)
+       /bin/rm -f Makefile
+       /bin/mv Makefile.tmp Makefile
+
+tar:
+       tar chf libdes.tar $(ALL)
+
+shar:
+       shar $(ALL) >libdes.shar
+
+depend:
+       makedepend $(LIBDES) $(TESTING_SRC)
+
+clean:
+       /bin/rm -f *.o tags core $(TESTING) $(DLIB) .nfs* *.old *.bak asm/*.o 
+
+dclean:
+       sed -e '/^# DO NOT DELETE THIS LINE/ q' Makefile >Makefile.new
+       mv -f Makefile.new Makefile
+
+# Eric is probably going to choke when he next looks at this --tjh
+install:
+       if test $(INSTALLTOP); then \
+           echo SSL style install; \
+           cp $(DLIB) $(INSTALLTOP)/lib; \
+           if test -s /bin/ranlib; then \
+               /bin/ranlib $(INSTALLTOP)/lib/$(DLIB); \
+           else \
+               if test -s /usr/bin/ranlib; then \
+               /usr/bin/ranlib $(INSTALLTOP)/lib/$(DLIB); \
+           fi; fi; \
+           chmod 644 $(INSTALLTOP)/lib/$(DLIB); \
+           cp des.h $(INSTALLTOP)/include; \
+           chmod 644 $(INSTALLTOP)/include/des.h; \
+       else \
+           echo Standalone install; \
+           cp $(DLIB) $(DESTDIR)$(LIBDIR)/$(DLIB); \
+           if test -s /bin/ranlib; then \
+             /bin/ranlib $(DESTDIR)$(LIBDIR)/$(DLIB); \
+           else \
+             if test -s /usr/bin/ranlib; then \
+               /usr/bin/ranlib $(LIBDIR)/$(DLIB); \
+             fi; \
+           fi; \
+           cp des_crypt.man $(DESTDIR)$(MANDIR)/man$(MAN3)/des_crypt.$(MAN3); \
+           cp des.man $(DESTDIR)$(MANDIR)/man$(MAN1)/des.$(MAN1); \
+           cp des.h $(DESTDIR)$(INCDIR)/des.h; \
+       fi
+# DO NOT DELETE THIS LINE -- make depend depends on it.
diff -druN linux-noipsec/net/ipsec/libdes/asm/crypt586.pl linux/net/ipsec/libdes/asm/crypt586.pl
--- linux-noipsec/net/ipsec/libdes/asm/crypt586.pl      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/crypt586.pl      Thu Feb 18 17:41:30 1999
@@ -0,0 +1,204 @@
+#!/usr/local/bin/perl
+#
+# The inner loop instruction sequence and the IP/FP modifications are from
+# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
+# I've added the stuff needed for crypt() but I've not worried about making
+# things perfect.
+#
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+
+&asm_init($ARGV[0],"crypt586.pl");
+
+$L="edi";
+$R="esi";
+
+&external_label("des_SPtrans");
+&fcrypt_body("fcrypt_body");
+&asm_finish();
+
+sub fcrypt_body
+       {
+       local($name,$do_ip)=@_;
+
+       &function_begin($name,"EXTRN   _des_SPtrans:DWORD");
+
+       &comment("");
+       &comment("Load the 2 words");
+       $ks="ebp";
+
+       &xor(   $L,     $L);
+       &xor(   $R,     $R);
+       &mov($ks,&wparam(1));
+
+       &push(25); # add a variable
+
+       &set_label("start");
+       for ($i=0; $i<16; $i+=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+
+               &comment("");
+               &comment("Round ".sprintf("%d",$i+1));
+               &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               }
+        &mov("ebx",    &swtmp(0));
+       &mov("eax",     $L);
+        &dec("ebx");
+       &mov($L,        $R);
+        &mov($R,       "eax");
+       &mov(&swtmp(0), "ebx");
+        &jnz(&label("start"));
+
+       &comment("");
+       &comment("FP");
+       &mov("edx",&wparam(0));
+
+       &FP_new($R,$L,"eax",3);
+       &mov(&DWP(0,"edx","",0),"eax");
+       &mov(&DWP(4,"edx","",0),$L);
+
+       &pop("ecx");    # remove variable
+
+       &function_end($name);
+       }
+
+sub D_ENCRYPT
+       {
+       local($r,$L,$R,$S,$ks,$desSP,$u,$tmp1,$tmp2,$t)=@_;
+
+       &mov(   $u,             &wparam(2));                    # 2
+       &mov(   $t,             $R);
+       &shr(   $t,             16);                            # 1
+       &mov(   $tmp2,          &wparam(3));                    # 2
+       &xor(   $t,             $R);                            # 1
+
+       &and(   $u,             $t);                            # 2
+       &and(   $t,             $tmp2);                         # 2
+
+       &mov(   $tmp1,          $u);
+       &shl(   $tmp1,          16);                            # 1
+       &mov(   $tmp2,          $t);
+       &shl(   $tmp2,          16);                            # 1
+       &xor(   $u,             $tmp1);                         # 2
+       &xor(   $t,             $tmp2);                         # 2
+       &mov(   $tmp1,          &DWP(&n2a($S*4),$ks,"",0));     # 2
+       &xor(   $u,             $tmp1);
+       &mov(   $tmp2,          &DWP(&n2a(($S+1)*4),$ks,"",0)); # 2
+       &xor(   $u,             $R);
+       &xor(   $t,             $R);
+       &xor(   $t,             $tmp2);
+
+       &and(   $u,             "0xfcfcfcfc"    );              # 2
+       &xor(   $tmp1,          $tmp1);                         # 1
+       &and(   $t,             "0xcfcfcfcf"    );              # 2
+       &xor(   $tmp2,          $tmp2); 
+       &movb(  &LB($tmp1),     &LB($u) );
+       &movb(  &LB($tmp2),     &HB($u) );
+       &rotr(  $t,             4               );
+       &mov(   $ks,            &DWP("      $desSP",$tmp1,"",0));
+       &movb(  &LB($tmp1),     &LB($t) );
+       &xor(   $L,             $ks);
+       &mov(   $ks,            &DWP("0x200+$desSP",$tmp2,"",0));
+       &xor(   $L,             $ks);
+       &movb(  &LB($tmp2),     &HB($t) );
+       &shr(   $u,             16);
+       &mov(   $ks,            &DWP("0x100+$desSP",$tmp1,"",0));
+       &xor(   $L,             $ks); 
+       &movb(  &LB($tmp1),     &HB($u) );
+       &shr(   $t,             16);
+       &mov(   $ks,            &DWP("0x300+$desSP",$tmp2,"",0));
+       &xor(   $L,             $ks);
+       &mov(   $ks,            &wparam(1));
+       &movb(  &LB($tmp2),     &HB($t) );
+       &and(   $u,             "0xff"  );
+       &and(   $t,             "0xff"  );
+       &mov(   $tmp1,          &DWP("0x600+$desSP",$tmp1,"",0));
+       &xor(   $L,             $tmp1);
+       &mov(   $tmp1,          &DWP("0x700+$desSP",$tmp2,"",0));
+       &xor(   $L,             $tmp1);
+       &mov(   $tmp1,          &DWP("0x400+$desSP",$u,"",0));
+       &xor(   $L,             $tmp1);
+       &mov(   $tmp1,          &DWP("0x500+$desSP",$t,"",0));
+       &xor(   $L,             $tmp1);
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
+
+# now has a side affect of rotating $a by $shift
+sub R_PERM_OP
+       {
+       local($a,$b,$tt,$shift,$mask,$last)=@_;
+
+       &rotl(  $a,             $shift          ) if ($shift != 0);
+       &mov(   $tt,            $a              );
+       &xor(   $a,             $b              );
+       &and(   $a,             $mask           );
+       if ($notlast eq $b)
+               {
+               &xor(   $b,             $a              );
+               &xor(   $tt,            $a              );
+               }
+       else
+               {
+               &xor(   $tt,            $a              );
+               &xor(   $b,             $a              );
+               }
+       &comment("");
+       }
+
+sub IP_new
+       {
+       local($l,$r,$tt,$lr)=@_;
+
+       &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
+       &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
+       &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
+       &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
+       &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
+       
+       if ($lr != 3)
+               {
+               if (($lr-3) < 0)
+                       { &rotr($tt,    3-$lr); }
+               else    { &rotl($tt,    $lr-3); }
+               }
+       if ($lr != 2)
+               {
+               if (($lr-2) < 0)
+                       { &rotr($r,     2-$lr); }
+               else    { &rotl($r,     $lr-2); }
+               }
+       }
+
+sub FP_new
+       {
+       local($l,$r,$tt,$lr)=@_;
+
+       if ($lr != 2)
+               {
+               if (($lr-2) < 0)
+                       { &rotl($r,     2-$lr); }
+               else    { &rotr($r,     $lr-2); }
+               }
+       if ($lr != 3)
+               {
+               if (($lr-3) < 0)
+                       { &rotl($l,     3-$lr); }
+               else    { &rotr($l,     $lr-3); }
+               }
+
+       &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
+       &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
+       &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
+       &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
+       &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
+       &rotr($tt       , 4);
+       }
+
diff -druN linux-noipsec/net/ipsec/libdes/asm/des-586.pl linux/net/ipsec/libdes/asm/des-586.pl
--- linux-noipsec/net/ipsec/libdes/asm/des-586.pl       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/des-586.pl       Thu Feb 18 17:41:31 1999
@@ -0,0 +1,251 @@
+#!/usr/local/bin/perl
+#
+# The inner loop instruction sequence and the IP/FP modifications are from
+# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
+#
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+require "desboth.pl";
+
+# base code is in microsft
+# op dest, source
+# format.
+#
+
+&asm_init($ARGV[0],"des-586.pl");
+
+$L="edi";
+$R="esi";
+
+&external_label("des_SPtrans");
+&des_encrypt("des_encrypt",1);
+&des_encrypt("des_encrypt2",0);
+&des_encrypt3("des_encrypt3",1);
+&des_encrypt3("des_decrypt3",0);
+&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1);
+&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5);
+
+&asm_finish();
+
+sub des_encrypt
+       {
+       local($name,$do_ip)=@_;
+
+       &function_begin_B($name,"EXTRN   _des_SPtrans:DWORD");
+
+       &push("esi");
+       &push("edi");
+
+       &comment("");
+       &comment("Load the 2 words");
+       $ks="ebp";
+
+       if ($do_ip)
+               {
+               &mov($R,&wparam(0));
+                &xor(  "ecx",          "ecx"           );
+
+               &push("ebx");
+               &push("ebp");
+
+               &mov("eax",&DWP(0,$R,"",0));
+                &mov("ebx",&wparam(2));        # get encrypt flag
+               &mov($L,&DWP(4,$R,"",0));
+               &comment("");
+               &comment("IP");
+               &IP_new("eax",$L,$R,3);
+               }
+       else
+               {
+               &mov("eax",&wparam(0));
+                &xor(  "ecx",          "ecx"           );
+
+               &push("ebx");
+               &push("ebp");
+
+               &mov($R,&DWP(0,"eax","",0));
+                &mov("ebx",&wparam(2));        # get encrypt flag
+               &rotl($R,3);
+               &mov($L,&DWP(4,"eax","",0));
+               &rotl($L,3);
+               }
+
+       &mov(   $ks,            &wparam(1)      );
+       &cmp("ebx","0");
+       &je(&label("start_decrypt"));
+
+       for ($i=0; $i<16; $i+=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+
+               &comment("");
+               &comment("Round ".sprintf("%d",$i+1));
+               &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               }
+       &jmp(&label("end"));
+
+       &set_label("start_decrypt");
+
+       for ($i=15; $i>0; $i-=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT(15-$i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               &comment("");
+               &comment("Round ".sprintf("%d",$i-1));
+               &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               }
+
+       &set_label("end");
+
+       if ($do_ip)
+               {
+               &comment("");
+               &comment("FP");
+               &mov("edx",&wparam(0));
+               &FP_new($L,$R,"eax",3);
+
+               &mov(&DWP(0,"edx","",0),"eax");
+               &mov(&DWP(4,"edx","",0),$R);
+               }
+       else
+               {
+               &comment("");
+               &comment("Fixup");
+               &rotr($L,3);            # r
+                &mov("eax",&wparam(0));
+               &rotr($R,3);            # l
+                &mov(&DWP(0,"eax","",0),$L);
+                &mov(&DWP(4,"eax","",0),$R);
+               }
+
+       &pop("ebp");
+       &pop("ebx");
+       &pop("edi");
+       &pop("esi");
+       &ret();
+
+       &function_end_B($name);
+       }
+
+sub D_ENCRYPT
+       {
+       local($r,$L,$R,$S,$ks,$desSP,$u,$tmp1,$tmp2,$t)=@_;
+
+        &mov(  $u,             &DWP(&n2a($S*4),$ks,"",0));
+       &xor(   $tmp1,          $tmp1);
+        &mov(  $t,             &DWP(&n2a(($S+1)*4),$ks,"",0));
+       &xor(   $u,             $R);
+        &xor(  $t,             $R);
+       &and(   $u,             "0xfcfcfcfc"    );
+        &and(  $t,             "0xcfcfcfcf"    );
+       &movb(  &LB($tmp1),     &LB($u) );
+        &movb( &LB($tmp2),     &HB($u) );
+       &rotr(  $t,             4               );
+       &mov(   $ks,            &DWP("      $desSP",$tmp1,"",0));
+        &movb( &LB($tmp1),     &LB($t) );
+       &xor(   $L,             $ks);
+        &mov(  $ks,            &DWP("0x200+$desSP",$tmp2,"",0));
+       &xor(   $L,             $ks); ######
+        &movb( &LB($tmp2),     &HB($t) );
+       &shr(   $u,             16);
+        &mov(  $ks,            &DWP("0x100+$desSP",$tmp1,"",0));
+       &xor(   $L,             $ks); ######
+        &movb( &LB($tmp1),     &HB($u) );
+       &shr(   $t,             16);
+        &mov(  $ks,            &DWP("0x300+$desSP",$tmp2,"",0));
+       &xor(   $L,             $ks);
+        &mov(  $ks,            &wparam(1)      );
+       &movb(  &LB($tmp2),     &HB($t) );
+        &and(  $u,             "0xff"  );
+       &and(   $t,             "0xff"  );
+        &mov(  $tmp1,          &DWP("0x600+$desSP",$tmp1,"",0));
+       &xor(   $L,             $tmp1);
+        &mov(  $tmp1,          &DWP("0x700+$desSP",$tmp2,"",0));
+       &xor(   $L,             $tmp1);
+        &mov(  $tmp1,          &DWP("0x400+$desSP",$u,"",0));
+       &xor(   $L,             $tmp1);
+        &mov(  $tmp1,          &DWP("0x500+$desSP",$t,"",0));
+       &xor(   $L,             $tmp1);
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
+
+# now has a side affect of rotating $a by $shift
+sub R_PERM_OP
+       {
+       local($a,$b,$tt,$shift,$mask,$last)=@_;
+
+       &rotl(  $a,             $shift          ) if ($shift != 0);
+       &mov(   $tt,            $a              );
+       &xor(   $a,             $b              );
+       &and(   $a,             $mask           );
+       if (!$last eq $b)
+               {
+               &xor(   $b,             $a              );
+               &xor(   $tt,            $a              );
+               }
+       else
+               {
+               &xor(   $tt,            $a              );
+               &xor(   $b,             $a              );
+               }
+       &comment("");
+       }
+
+sub IP_new
+       {
+       local($l,$r,$tt,$lr)=@_;
+
+       &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
+       &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
+       &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
+       &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
+       &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
+       
+       if ($lr != 3)
+               {
+               if (($lr-3) < 0)
+                       { &rotr($tt,    3-$lr); }
+               else    { &rotl($tt,    $lr-3); }
+               }
+       if ($lr != 2)
+               {
+               if (($lr-2) < 0)
+                       { &rotr($r,     2-$lr); }
+               else    { &rotl($r,     $lr-2); }
+               }
+       }
+
+sub FP_new
+       {
+       local($l,$r,$tt,$lr)=@_;
+
+       if ($lr != 2)
+               {
+               if (($lr-2) < 0)
+                       { &rotl($r,     2-$lr); }
+               else    { &rotr($r,     $lr-2); }
+               }
+       if ($lr != 3)
+               {
+               if (($lr-3) < 0)
+                       { &rotl($l,     3-$lr); }
+               else    { &rotr($l,     $lr-3); }
+               }
+
+       &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
+       &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
+       &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
+       &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
+       &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
+       &rotr($tt       , 4);
+       }
+
diff -druN linux-noipsec/net/ipsec/libdes/asm/des686.pl linux/net/ipsec/libdes/asm/des686.pl
--- linux-noipsec/net/ipsec/libdes/asm/des686.pl        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/des686.pl        Thu Feb 18 17:41:32 1999
@@ -0,0 +1,230 @@
+#!/usr/local/bin/perl
+
+$prog="des686.pl";
+
+# base code is in microsft
+# op dest, source
+# format.
+#
+
+# WILL NOT WORK ANYMORE WITH desboth.pl
+require "desboth.pl";
+
+if (   ($ARGV[0] eq "elf"))
+       { require "x86unix.pl"; }
+elsif (        ($ARGV[0] eq "a.out"))
+       { $aout=1; require "x86unix.pl"; }
+elsif (        ($ARGV[0] eq "sol"))
+       { $sol=1; require "x86unix.pl"; }
+elsif ( ($ARGV[0] eq "cpp"))
+       { $cpp=1; require "x86unix.pl"; }
+elsif (        ($ARGV[0] eq "win32"))
+       { require "x86ms.pl"; }
+else
+       {
+       print STDERR <<"EOF";
+Pick one target type from
+       elf     - linux, FreeBSD etc
+       a.out   - old linux
+       sol     - x86 solaris
+       cpp     - format so x86unix.cpp can be used
+       win32   - Windows 95/Windows NT
+EOF
+       exit(1);
+       }
+
+&comment("Don't even think of reading this code");
+&comment("It was automatically generated by $prog");
+&comment("Which is a perl program used to generate the x86 assember for");
+&comment("any of elf, a.out, Win32, or Solaris");
+&comment("It can be found in SSLeay 0.6.5+ or in libdes 3.26+");
+&comment("eric <eay\@cryptsoft.com>");
+&comment("");
+
+&file("dx86xxxx");
+
+$L="edi";
+$R="esi";
+
+&des_encrypt("des_encrypt",1);
+&des_encrypt("des_encrypt2",0);
+
+&des_encrypt3("des_encrypt3",1);
+&des_encrypt3("des_decrypt3",0);
+
+&file_end();
+
+sub des_encrypt
+       {
+       local($name,$do_ip)=@_;
+
+       &function_begin($name,"EXTRN   _des_SPtrans:DWORD");
+
+       &comment("");
+       &comment("Load the 2 words");
+       &mov("eax",&wparam(0));
+       &mov($L,&DWP(0,"eax","",0));
+       &mov($R,&DWP(4,"eax","",0));
+
+       $ksp=&wparam(1);
+
+       if ($do_ip)
+               {
+               &comment("");
+               &comment("IP");
+               &IP_new($L,$R,"eax");
+               }
+
+       &comment("");
+       &comment("fixup rotate");
+       &rotl($R,3);
+       &rotl($L,3);
+       &exch($L,$R);
+
+       &comment("");
+       &comment("load counter, key_schedule and enc flag");
+       &mov("eax",&wparam(2)); # get encrypt flag
+       &mov("ebp",&wparam(1)); # get ks
+       &cmp("eax","0");
+       &je(&label("start_decrypt"));
+
+       # encrypting part
+
+       for ($i=0; $i<16; $i+=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($L,$R,$i*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+
+               &comment("");
+               &comment("Round ".sprintf("%d",$i+1));
+               &D_ENCRYPT($R,$L,($i+1)*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+               }
+       &jmp(&label("end"));
+
+       &set_label("start_decrypt");
+
+       for ($i=15; $i>0; $i-=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($L,$R,$i*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+               &comment("");
+               &comment("Round ".sprintf("%d",$i-1));
+               &D_ENCRYPT($R,$L,($i-1)*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+               }
+
+       &set_label("end");
+
+       &comment("");
+       &comment("Fixup");
+       &rotr($L,3);            # r
+       &rotr($R,3);            # l
+
+       if ($do_ip)
+               {
+               &comment("");
+               &comment("FP");
+               &FP_new($R,$L,"eax");
+               }
+
+       &mov("eax",&wparam(0));
+       &mov(&DWP(0,"eax","",0),$L);
+       &mov(&DWP(4,"eax","",0),$R);
+
+       &function_end($name);
+       }
+
+
+# The logic is to load R into 2 registers and operate on both at the same time.
+# We also load the 2 R's into 2 more registers so we can do the 'move word down a byte'
+# while also masking the other copy and doing a lookup.  We then also accumulate the
+# L value in 2 registers then combine them at the end.
+sub D_ENCRYPT
+       {
+       local($L,$R,$S,$ks,$desSP,$u,$t,$tmp1,$tmp2,$tmp3)=@_;
+
+       &mov(   $u,             &DWP(&n2a($S*4),$ks,"",0));
+       &mov(   $t,             &DWP(&n2a(($S+1)*4),$ks,"",0));
+       &xor(   $u,             $R              );
+       &xor(   $t,             $R              );
+       &rotr(  $t,             4               );
+
+       # the numbers at the end of the line are origional instruction order
+       &mov(   $tmp2,          $u              );                      # 1 2
+       &mov(   $tmp1,          $t              );                      # 1 1
+       &and(   $tmp2,          "0xfc"          );                      # 1 4
+       &and(   $tmp1,          "0xfc"          );                      # 1 3
+       &shr(   $t,             8               );                      # 1 5
+       &xor(   $L,             &DWP("0x100+$desSP",$tmp1,"",0));       # 1 7
+       &shr(   $u,             8               );                      # 1 6
+       &mov(   $tmp1,          &DWP("      $desSP",$tmp2,"",0));       # 1 8
+
+       &mov(   $tmp2,          $u              );                      # 2 2
+       &xor(   $L,             $tmp1           );                      # 1 9
+       &and(   $tmp2,          "0xfc"          );                      # 2 4
+       &mov(   $tmp1,          $t              );                      # 2 1
+       &and(   $tmp1,          "0xfc"          );                      # 2 3
+       &shr(   $t,             8               );                      # 2 5
+       &xor(   $L,             &DWP("0x300+$desSP",$tmp1,"",0));       # 2 7
+       &shr(   $u,             8               );                      # 2 6
+       &mov(   $tmp1,          &DWP("0x200+$desSP",$tmp2,"",0));       # 2 8
+       &mov(   $tmp2,          $u              );                      # 3 2
+
+       &xor(   $L,             $tmp1           );                      # 2 9
+       &and(   $tmp2,          "0xfc"          );                      # 3 4
+
+       &mov(   $tmp1,          $t              );                      # 3 1 
+       &shr(   $u,             8               );                      # 3 6
+       &and(   $tmp1,          "0xfc"          );                      # 3 3
+       &shr(   $t,             8               );                      # 3 5
+       &xor(   $L,             &DWP("0x500+$desSP",$tmp1,"",0));       # 3 7
+       &mov(   $tmp1,          &DWP("0x400+$desSP",$tmp2,"",0));       # 3 8
+
+       &and(   $t,             "0xfc"          );                      # 4 1
+       &xor(   $L,             $tmp1           );                      # 3 9
+
+       &and(   $u,             "0xfc"          );                      # 4 2
+       &xor(   $L,             &DWP("0x700+$desSP",$t,"",0));          # 4 3
+       &xor(   $L,             &DWP("0x600+$desSP",$u,"",0));          # 4 4
+       }
+
+sub PERM_OP
+       {
+       local($a,$b,$tt,$shift,$mask)=@_;
+
+       &mov(   $tt,            $a              );
+       &shr(   $tt,            $shift          );
+       &xor(   $tt,            $b              );
+       &and(   $tt,            $mask           );
+       &xor(   $b,             $tt             );
+       &shl(   $tt,            $shift          );
+       &xor(   $a,             $tt             );
+       }
+
+sub IP_new
+       {
+       local($l,$r,$tt)=@_;
+
+       &PERM_OP($r,$l,$tt, 4,"0x0f0f0f0f");
+       &PERM_OP($l,$r,$tt,16,"0x0000ffff");
+       &PERM_OP($r,$l,$tt, 2,"0x33333333");
+       &PERM_OP($l,$r,$tt, 8,"0x00ff00ff");
+       &PERM_OP($r,$l,$tt, 1,"0x55555555");
+       }
+
+sub FP_new
+       {
+       local($l,$r,$tt)=@_;
+
+       &PERM_OP($l,$r,$tt, 1,"0x55555555");
+        &PERM_OP($r,$l,$tt, 8,"0x00ff00ff");
+        &PERM_OP($l,$r,$tt, 2,"0x33333333");
+        &PERM_OP($r,$l,$tt,16,"0x0000ffff");
+        &PERM_OP($l,$r,$tt, 4,"0x0f0f0f0f");
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
diff -druN linux-noipsec/net/ipsec/libdes/asm/desboth.pl linux/net/ipsec/libdes/asm/desboth.pl
--- linux-noipsec/net/ipsec/libdes/asm/desboth.pl       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/desboth.pl       Thu Feb 18 17:41:32 1999
@@ -0,0 +1,79 @@
+#!/usr/local/bin/perl
+
+$L="edi";
+$R="esi";
+
+sub des_encrypt3
+       {
+       local($name,$enc)=@_;
+
+       &function_begin_B($name,"");
+       &push("ebx");
+       &mov("ebx",&wparam(0));
+
+       &push("ebp");
+       &push("esi");
+
+       &push("edi");
+
+       &comment("");
+       &comment("Load the data words");
+       &mov($L,&DWP(0,"ebx","",0));
+       &mov($R,&DWP(4,"ebx","",0));
+       &stack_push(3);
+
+       &comment("");
+       &comment("IP");
+       &IP_new($L,$R,"edx",0);
+
+       # put them back
+       
+       if ($enc)
+               {
+               &mov(&DWP(4,"ebx","",0),$R);
+                &mov("eax",&wparam(1));
+               &mov(&DWP(0,"ebx","",0),"edx");
+                &mov("edi",&wparam(2));
+                &mov("esi",&wparam(3));
+               }
+       else
+               {
+               &mov(&DWP(4,"ebx","",0),$R);
+                &mov("esi",&wparam(1));
+               &mov(&DWP(0,"ebx","",0),"edx");
+                &mov("edi",&wparam(2));
+                &mov("eax",&wparam(3));
+               }
+       &mov(&swtmp(2), (($enc)?"1":"0"));
+       &mov(&swtmp(1), "eax");
+       &mov(&swtmp(0), "ebx");
+       &call("des_encrypt2");
+       &mov(&swtmp(2), (($enc)?"0":"1"));
+       &mov(&swtmp(1), "edi");
+       &mov(&swtmp(0), "ebx");
+       &call("des_encrypt2");
+       &mov(&swtmp(2), (($enc)?"1":"0"));
+       &mov(&swtmp(1), "esi");
+       &mov(&swtmp(0), "ebx");
+       &call("des_encrypt2");
+
+       &stack_pop(3);
+       &mov($L,&DWP(0,"ebx","",0));
+       &mov($R,&DWP(4,"ebx","",0));
+
+       &comment("");
+       &comment("FP");
+       &FP_new($L,$R,"eax",0);
+
+       &mov(&DWP(0,"ebx","",0),"eax");
+       &mov(&DWP(4,"ebx","",0),$R);
+
+       &pop("edi");
+       &pop("esi");
+       &pop("ebp");
+       &pop("ebx");
+       &ret();
+       &function_end_B($name);
+       }
+
+
diff -druN linux-noipsec/net/ipsec/libdes/asm/perlasm/cbc.pl linux/net/ipsec/libdes/asm/perlasm/cbc.pl
--- linux-noipsec/net/ipsec/libdes/asm/perlasm/cbc.pl   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/perlasm/cbc.pl   Thu Feb 18 17:41:34 1999
@@ -0,0 +1,342 @@
+#!/usr/local/bin/perl
+
+# void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
+# des_cblock (*input);
+# des_cblock (*output);
+# long length;
+# des_key_schedule schedule;
+# des_cblock (*ivec);
+# int enc;
+#
+# calls 
+# des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+#
+
+#&cbc("des_ncbc_encrypt","des_encrypt",0);
+#&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt",
+#      1,4,5,3,5,-1);
+#&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",
+#      0,4,5,3,5,-1);
+#&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",
+#      0,6,7,3,4,5);
+#
+# When doing a cipher that needs bigendian order,
+# for encrypt, the iv is kept in bigendian form,
+# while for decrypt, it is kept in little endian.
+sub cbc
+       {
+       local($name,$enc_func,$dec_func,$swap,$iv_off,$enc_off,$p1,$p2,$p3)=@_;
+       # name is the function name
+       # enc_func and dec_func and the functions to call for encrypt/decrypt
+       # swap is true if byte order needs to be reversed
+       # iv_off is parameter number for the iv 
+       # enc_off is parameter number for the encrypt/decrypt flag
+       # p1,p2,p3 are the offsets for parameters to be passed to the
+       # underlying calls.
+
+       &function_begin_B($name,"");
+       &comment("");
+
+       $in="esi";
+       $out="edi";
+       $count="ebp";
+
+       &push("ebp");
+       &push("ebx");
+       &push("esi");
+       &push("edi");
+
+       $data_off=4;
+       $data_off+=4 if ($p1 > 0);
+       $data_off+=4 if ($p2 > 0);
+       $data_off+=4 if ($p3 > 0);
+
+       &mov($count,    &wparam(2));    # length
+
+       &comment("getting iv ptr from parameter $iv_off");
+       &mov("ebx",     &wparam($iv_off));      # Get iv ptr
+
+       &mov($in,       &DWP(0,"ebx","",0));#   iv[0]
+       &mov($out,      &DWP(4,"ebx","",0));#   iv[1]
+
+       &push($out);
+       &push($in);
+       &push($out);    # used in decrypt for iv[1]
+       &push($in);     # used in decrypt for iv[0]
+
+       &mov("ebx",     "esp");         # This is the address of tin[2]
+
+       &mov($in,       &wparam(0));    # in
+       &mov($out,      &wparam(1));    # out
+
+       # We have loaded them all, how lets push things
+       &comment("getting encrypt flag from parameter $enc_off");
+       &mov("ecx",     &wparam($enc_off));     # Get enc flag
+       if ($p3 > 0)
+               {
+               &comment("get and push parameter $p3");
+               if ($enc_off != $p3)
+                       { &mov("eax",   &wparam($p3)); &push("eax"); }
+               else    { &push("ecx"); }
+               }
+       if ($p2 > 0)
+               {
+               &comment("get and push parameter $p2");
+               if ($enc_off != $p2)
+                       { &mov("eax",   &wparam($p2)); &push("eax"); }
+               else    { &push("ecx"); }
+               }
+       if ($p1 > 0)
+               {
+               &comment("get and push parameter $p1");
+               if ($enc_off != $p1)
+                       { &mov("eax",   &wparam($p1)); &push("eax"); }
+               else    { &push("ecx"); }
+               }
+       &push("ebx");           # push data/iv
+
+       &cmp("ecx",0);
+       &jz(&label("decrypt"));
+
+       &and($count,0xfffffff8);
+       &mov("eax",     &DWP($data_off,"esp","",0));    # load iv[0]
+       &mov("ebx",     &DWP($data_off+4,"esp","",0));  # load iv[1]
+
+       &jz(&label("encrypt_finish"));
+
+       #############################################################
+
+       &set_label("encrypt_loop");
+       # encrypt start 
+       # "eax" and "ebx" hold iv (or the last cipher text)
+
+       &mov("ecx",     &DWP(0,$in,"",0));      # load first 4 bytes
+       &mov("edx",     &DWP(4,$in,"",0));      # second 4 bytes
+
+       &xor("eax",     "ecx");
+       &xor("ebx",     "edx");
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov(&DWP($data_off,"esp","",0),        "eax"); # put in array for call
+       &mov(&DWP($data_off+4,"esp","",0),      "ebx"); #
+
+       &call($enc_func);
+
+       &mov("eax",     &DWP($data_off,"esp","",0));
+       &mov("ebx",     &DWP($data_off+4,"esp","",0));
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov(&DWP(0,$out,"",0),"eax");
+       &mov(&DWP(4,$out,"",0),"ebx");
+
+       # eax and ebx are the next iv.
+
+       &add($in,       8);
+       &add($out,      8);
+
+       &sub($count,    8);
+       &jnz(&label("encrypt_loop"));
+
+###################################################################3
+       &set_label("encrypt_finish");
+       &mov($count,    &wparam(2));    # length
+       &and($count,    7);
+       &jz(&label("finish"));
+       &xor("ecx","ecx");
+       &xor("edx","edx");
+       &mov($count,&DWP(&label("cbc_enc_jmp_table"),"",$count,4));
+       &jmp_ptr($count);
+
+&set_label("ej7");
+       &xor("edx",             "edx") if $ppro; # ppro friendly
+       &movb(&HB("edx"),       &BP(6,$in,"",0));
+       &shl("edx",8);
+&set_label("ej6");
+       &movb(&HB("edx"),       &BP(5,$in,"",0));
+&set_label("ej5");
+       &movb(&LB("edx"),       &BP(4,$in,"",0));
+&set_label("ej4");
+       &mov("ecx",             &DWP(0,$in,"",0));
+       &jmp(&label("ejend"));
+&set_label("ej3");
+       &movb(&HB("ecx"),       &BP(2,$in,"",0));
+       &xor("ecx",             "ecx") if $ppro; # ppro friendly
+       &shl("ecx",8);
+&set_label("ej2");
+       &movb(&HB("ecx"),       &BP(1,$in,"",0));
+&set_label("ej1");
+       &movb(&LB("ecx"),       &BP(0,$in,"",0));
+&set_label("ejend");
+
+       &xor("eax",     "ecx");
+       &xor("ebx",     "edx");
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov(&DWP($data_off,"esp","",0),        "eax"); # put in array for call
+       &mov(&DWP($data_off+4,"esp","",0),      "ebx"); #
+
+       &call($enc_func);
+
+       &mov("eax",     &DWP($data_off,"esp","",0));
+       &mov("ebx",     &DWP($data_off+4,"esp","",0));
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov(&DWP(0,$out,"",0),"eax");
+       &mov(&DWP(4,$out,"",0),"ebx");
+
+       &jmp(&label("finish"));
+
+       #############################################################
+       #############################################################
+       &set_label("decrypt",1);
+       # decrypt start 
+       &and($count,0xfffffff8);
+       # The next 2 instructions are only for if the jz is taken
+       &mov("eax",     &DWP($data_off+8,"esp","",0));  # get iv[0]
+       &mov("ebx",     &DWP($data_off+12,"esp","",0)); # get iv[1]
+       &jz(&label("decrypt_finish"));
+
+       &set_label("decrypt_loop");
+       &mov("eax",     &DWP(0,$in,"",0));      # load first 4 bytes
+       &mov("ebx",     &DWP(4,$in,"",0));      # second 4 bytes
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov(&DWP($data_off,"esp","",0),        "eax"); # put back
+       &mov(&DWP($data_off+4,"esp","",0),      "ebx"); #
+
+       &call($dec_func);
+
+       &mov("eax",     &DWP($data_off,"esp","",0));    # get return
+       &mov("ebx",     &DWP($data_off+4,"esp","",0));  #
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov("ecx",     &DWP($data_off+8,"esp","",0));  # get iv[0]
+       &mov("edx",     &DWP($data_off+12,"esp","",0)); # get iv[1]
+
+       &xor("ecx",     "eax");
+       &xor("edx",     "ebx");
+
+       &mov("eax",     &DWP(0,$in,"",0));      # get old cipher text,
+       &mov("ebx",     &DWP(4,$in,"",0));      # next iv actually
+
+       &mov(&DWP(0,$out,"",0),"ecx");
+       &mov(&DWP(4,$out,"",0),"edx");
+
+       &mov(&DWP($data_off+8,"esp","",0),      "eax"); # save iv
+       &mov(&DWP($data_off+12,"esp","",0),     "ebx"); #
+
+       &add($in,       8);
+       &add($out,      8);
+
+       &sub($count,    8);
+       &jnz(&label("decrypt_loop"));
+############################ ENDIT #######################3
+       &set_label("decrypt_finish");
+       &mov($count,    &wparam(2));    # length
+       &and($count,    7);
+       &jz(&label("finish"));
+
+       &mov("eax",     &DWP(0,$in,"",0));      # load first 4 bytes
+       &mov("ebx",     &DWP(4,$in,"",0));      # second 4 bytes
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov(&DWP($data_off,"esp","",0),        "eax"); # put back
+       &mov(&DWP($data_off+4,"esp","",0),      "ebx"); #
+
+       &call($dec_func);
+
+       &mov("eax",     &DWP($data_off,"esp","",0));    # get return
+       &mov("ebx",     &DWP($data_off+4,"esp","",0));  #
+
+       &bswap("eax")   if $swap;
+       &bswap("ebx")   if $swap;
+
+       &mov("ecx",     &DWP($data_off+8,"esp","",0));  # get iv[0]
+       &mov("edx",     &DWP($data_off+12,"esp","",0)); # get iv[1]
+
+       &xor("ecx",     "eax");
+       &xor("edx",     "ebx");
+
+       # this is for when we exit
+       &mov("eax",     &DWP(0,$in,"",0));      # get old cipher text,
+       &mov("ebx",     &DWP(4,$in,"",0));      # next iv actually
+
+&set_label("dj7");
+       &rotr("edx",    16);
+       &movb(&BP(6,$out,"",0), &LB("edx"));
+       &shr("edx",16);
+&set_label("dj6");
+       &movb(&BP(5,$out,"",0), &HB("edx"));
+&set_label("dj5");
+       &movb(&BP(4,$out,"",0), &LB("edx"));
+&set_label("dj4");
+       &mov(&DWP(0,$out,"",0), "ecx");
+       &jmp(&label("djend"));
+&set_label("dj3");
+       &rotr("ecx",    16);
+       &movb(&BP(2,$out,"",0), &LB("ecx"));
+       &shl("ecx",16);
+&set_label("dj2");
+       &movb(&BP(1,$in,"",0),  &HB("ecx"));
+&set_label("dj1");
+       &movb(&BP(0,$in,"",0),  &LB("ecx"));
+&set_label("djend");
+
+       # final iv is still in eax:ebx
+       &jmp(&label("finish"));
+
+
+############################ FINISH #######################3
+       &set_label("finish",1);
+       &mov("ecx",     &wparam($iv_off));      # Get iv ptr
+
+       #################################################
+       $total=16+4;
+       $total+=4 if ($p1 > 0);
+       $total+=4 if ($p2 > 0);
+       $total+=4 if ($p3 > 0);
+       &add("esp",$total);
+
+       &mov(&DWP(0,"ecx","",0),        "eax"); # save iv
+       &mov(&DWP(4,"ecx","",0),        "ebx"); # save iv
+
+       &function_end_A($name);
+
+       &set_label("cbc_enc_jmp_table",1);
+       &data_word("0");
+       &data_word(&label("ej1"));
+       &data_word(&label("ej2"));
+       &data_word(&label("ej3"));
+       &data_word(&label("ej4"));
+       &data_word(&label("ej5"));
+       &data_word(&label("ej6"));
+       &data_word(&label("ej7"));
+       &set_label("cbc_dec_jmp_table",1);
+       &data_word("0");
+       &data_word(&label("dj1"));
+       &data_word(&label("dj2"));
+       &data_word(&label("dj3"));
+       &data_word(&label("dj4"));
+       &data_word(&label("dj5"));
+       &data_word(&label("dj6"));
+       &data_word(&label("dj7"));
+
+       &function_end_B($name);
+       
+       }
+
+1;
diff -druN linux-noipsec/net/ipsec/libdes/asm/perlasm/readme linux/net/ipsec/libdes/asm/perlasm/readme
--- linux-noipsec/net/ipsec/libdes/asm/perlasm/readme   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/perlasm/readme   Thu Feb 18 17:41:35 1999
@@ -0,0 +1,124 @@
+The perl scripts in this directory are my 'hack' to generate
+multiple different assembler formats via the one origional script.
+
+The way to use this library is to start with adding the path to this directory
+and then include it.
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+
+The first thing we do is setup the file and type of assember
+
+&asm_init($ARGV[0],$0);
+
+The first argument is the 'type'.  Currently
+'cpp', 'sol', 'a.out', 'elf' or 'win32'.
+Argument 2 is the file name.
+
+The reciprocal function is
+&asm_finish() which should be called at the end.
+
+There are 2 main 'packages'. x86ms.pl, which is the microsoft assembler,
+and x86unix.pl which is the unix (gas) version.
+
+Functions of interest are:
+&external_label("des_SPtrans");        declare and external variable
+&LB(reg);                      Low byte for a register
+&HB(reg);                      High byte for a register
+&BP(off,base,index,scale)      Byte pointer addressing
+&DWP(off,base,index,scale)     Word pointer addressing
+&stack_push(num)               Basically a 'sub esp, num*4' with extra
+&stack_pop(num)                        inverse of stack_push
+&function_begin(name,extra)    Start a function with pushing of
+                               edi, esi, ebx and ebp.  extra is extra win32
+                               external info that may be required.
+&function_begin_B(name,extra)  Same as norma function_begin but no pushing.
+&function_end(name)            Call at end of function.
+&function_end_A(name)          Standard pop and ret, for use inside functions
+&function_end_B(name)          Call at end but with poping or 'ret'.
+&swtmp(num)                    Address on stack temp word.
+&wparam(num)                   Parameter number num, that was push
+                               in C convention.  This all works over pushes
+                               and pops.
+&comment("hello there")                Put in a comment.
+&label("loop")                 Refer to a label, normally a jmp target.
+&set_label("loop")             Set a label at this point.
+&data_word(word)               Put in a word of data.
+
+So how does this all hold together?  Given
+
+int calc(int len, int *data)
+       {
+       int i,j=0;
+
+       for (i=0; i<len; i++)
+               {
+               j+=other(data[i]);
+               }
+       }
+
+So a very simple version of this function could be coded as
+
+       push(@INC,"perlasm","../../perlasm");
+       require "x86asm.pl";
+       
+       &asm_init($ARGV[0],"cacl.pl");
+
+       &external_label("other");
+
+       $tmp1=  "eax";
+       $j=     "edi";
+       $data=  "esi";
+       $i=     "ebp";
+
+       &comment("a simple function");
+       &function_begin("calc");
+       &mov(   $data,          &wparam(1)); # data
+       &xor(   $j,             $j);
+       &xor(   $i,             $i);
+
+       &set_label("loop");
+       &cmp(   $i,             &wparam(0));
+       &jge(   &label("end"));
+
+       &mov(   $tmp1,          &DWP(0,$data,$i,4));
+       &push(  $tmp1);
+       &call(  "other");
+       &add(   $j,             "eax");
+       &pop(   $tmp1);
+       &inc(   $i);
+       &jmp(   &label("loop"));
+
+       &set_label("end");
+       &mov(   "eax",          $j);
+
+       &function_end("calc");
+
+       &asm_finish();
+
+The above example is very very unoptimised but gives an idea of how
+things work.
+
+There is also a cbc mode function generator in cbc.pl
+
+&cbc(  $name,
+       $encrypt_function_name,
+       $decrypt_function_name,
+       $true_if_byte_swap_needed,
+       $parameter_number_for_iv,
+       $parameter_number_for_encrypt_flag,
+       $first_parameter_to_pass,
+       $second_parameter_to_pass,
+       $third_parameter_to_pass);
+
+So for example, given
+void BF_encrypt(BF_LONG *data,BF_KEY *key);
+void BF_decrypt(BF_LONG *data,BF_KEY *key);
+void BF_cbc_encrypt(unsigned char *in, unsigned char *out, long length,
+        BF_KEY *ks, unsigned char *iv, int enc);
+
+&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt",1,4,5,3,-1,-1);
+
+&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1);
+&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5);
+
diff -druN linux-noipsec/net/ipsec/libdes/asm/perlasm/x86asm.pl linux/net/ipsec/libdes/asm/perlasm/x86asm.pl
--- linux-noipsec/net/ipsec/libdes/asm/perlasm/x86asm.pl        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/perlasm/x86asm.pl        Thu Feb 18 17:41:35 1999
@@ -0,0 +1,111 @@
+#!/usr/local/bin/perl
+
+# require 'x86asm.pl';
+# &asm_init("cpp","des-586.pl");
+# XXX
+# XXX
+# main'asm_finish
+
+sub main'asm_finish
+       {
+       &file_end();
+       &asm_finish_cpp() if $cpp;
+       print &asm_get_output();
+       }
+
+sub main'asm_init
+       {
+       ($type,$fn)=@_;
+       $filename=$fn;
+
+       $cpp=$sol=$aout=$win32=0;
+       if (    ($type eq "elf"))
+               { require "x86unix.pl"; }
+       elsif ( ($type eq "a.out"))
+               { $aout=1; require "x86unix.pl"; }
+       elsif ( ($type eq "sol"))
+               { $sol=1; require "x86unix.pl"; }
+       elsif ( ($type eq "cpp"))
+               { $cpp=1; require "x86unix.pl"; }
+       elsif ( ($type eq "win32"))
+               { $win32=1; require "x86ms.pl"; }
+       else
+               {
+               print STDERR <<"EOF";
+Pick one target type from
+       elf     - linux, FreeBSD etc
+       a.out   - old linux
+       sol     - x86 solaris
+       cpp     - format so x86unix.cpp can be used
+       win32   - Windows 95/Windows NT
+EOF
+               exit(1);
+               }
+
+       &asm_init_output();
+
+&comment("Don't even think of reading this code");
+&comment("It was automatically generated by $filename");
+&comment("Which is a perl program used to generate the x86 assember for");
+&comment("any of elf, a.out, BSDI,Win32, or Solaris");
+&comment("eric <eay\@cryptsoft.com>");
+&comment("");
+
+       $filename =~ s/\.pl$//;
+       &file($filename);
+       }
+
+sub asm_finish_cpp
+       {
+       return unless $cpp;
+
+       local($tmp,$i);
+       foreach $i (&get_labels())
+               {
+               $tmp.="#define $i _$i\n";
+               }
+       print <<"EOF";
+/* Run the C pre-processor over this file with one of the following defined
+ * ELF - elf object files,
+ * OUT - a.out object files,
+ * BSDI - BSDI style a.out object files
+ * SOL - Solaris style elf
+ */
+
+#define TYPE(a,b)       .type   a,b
+#define SIZE(a,b)       .size   a,b
+
+#if defined(OUT) || defined(BSDI)
+$tmp
+#endif
+
+#ifdef OUT
+#define OK     1
+#define ALIGN  4
+#endif
+
+#ifdef BSDI
+#define OK              1
+#define ALIGN           4
+#undef SIZE
+#undef TYPE
+#endif
+
+#if defined(ELF) || defined(SOL)
+#define OK              1
+#define ALIGN           16
+#endif
+
+#ifndef OK
+You need to define one of
+ELF - elf systems - linux-elf, NetBSD and DG-UX
+OUT - a.out systems - linux-a.out and FreeBSD
+SOL - solaris systems, which are elf with strange comment lines
+BSDI - a.out with a very primative version of as.
+#endif
+
+/* Let the Assembler begin :-) */
+EOF
+       }
+
+1;
diff -druN linux-noipsec/net/ipsec/libdes/asm/perlasm/x86ms.pl linux/net/ipsec/libdes/asm/perlasm/x86ms.pl
--- linux-noipsec/net/ipsec/libdes/asm/perlasm/x86ms.pl Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/perlasm/x86ms.pl Thu Feb 18 17:41:35 1999
@@ -0,0 +1,345 @@
+#!/usr/local/bin/perl
+
+package x86ms;
+
+$label="L000";
+
+%lb=(  'eax',  'al',
+       'ebx',  'bl',
+       'ecx',  'cl',
+       'edx',  'dl',
+       'ax',   'al',
+       'bx',   'bl',
+       'cx',   'cl',
+       'dx',   'dl',
+       );
+
+%hb=(  'eax',  'ah',
+       'ebx',  'bh',
+       'ecx',  'ch',
+       'edx',  'dh',
+       'ax',   'ah',
+       'bx',   'bh',
+       'cx',   'ch',
+       'dx',   'dh',
+       );
+
+sub main'asm_init_output { @out=(); }
+sub main'asm_get_output { return(@out); }
+sub main'get_labels { return(@labels); }
+sub main'external_label { push(@labels,@_); }
+
+sub main'LB
+       {
+       (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
+       return($lb{$_[0]});
+       }
+
+sub main'HB
+       {
+       (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
+       return($hb{$_[0]});
+       }
+
+sub main'BP
+       {
+       &get_mem("BYTE",@_);
+       }
+
+sub main'DWP
+       {
+       &get_mem("DWORD",@_);
+       }
+
+sub main'stack_push
+       {
+       local($num)=@_;
+       $stack+=$num*4;
+       &main'sub("esp",$num*4);
+       }
+
+sub main'stack_pop
+       {
+       local($num)=@_;
+       $stack-=$num*4;
+       &main'add("esp",$num*4);
+       }
+
+sub get_mem
+       {
+       local($size,$addr,$reg1,$reg2,$idx)=@_;
+       local($t,$post);
+       local($ret)="$size PTR ";
+
+       $addr =~ s/^\s+//;
+       if ($addr =~ /^(.+)\+(.+)$/)
+               {
+               $reg2=&conv($1);
+               $addr="_$2";
+               }
+       elsif ($addr =~ /^[_a-zA-Z]/)
+               {
+               $addr="_$addr";
+               }
+
+       $reg1="$regs{$reg1}" if defined($regs{$reg1});
+       $reg2="$regs{$reg2}" if defined($regs{$reg2});
+       if (($addr ne "") && ($addr ne 0))
+               {
+               if ($addr !~ /^-/)
+                       { $ret.=$addr; }
+               else    { $post=$addr; }
+               }
+       if ($reg2 ne "")
+               {
+               $t="";
+               $t="*$idx" if ($idx != 0);
+               $reg1="+".$reg1 if ("$reg1$post" ne "");
+               $ret.="[$reg2$t$reg1$post]";
+               }
+       else
+               {
+               $ret.="[$reg1$post]"
+               }
+       return($ret);
+       }
+
+sub main'mov   { &out2("mov",@_); }
+sub main'movb  { &out2("mov",@_); }
+sub main'and   { &out2("and",@_); }
+sub main'or    { &out2("or",@_); }
+sub main'shl   { &out2("shl",@_); }
+sub main'shr   { &out2("shr",@_); }
+sub main'xor   { &out2("xor",@_); }
+sub main'xorb  { &out2("xor",@_); }
+sub main'add   { &out2("add",@_); }
+sub main'adc   { &out2("adc",@_); }
+sub main'sub   { &out2("sub",@_); }
+sub main'rotl  { &out2("rol",@_); }
+sub main'rotr  { &out2("ror",@_); }
+sub main'exch  { &out2("xchg",@_); }
+sub main'cmp   { &out2("cmp",@_); }
+sub main'lea   { &out2("lea",@_); }
+sub main'mul   { &out1("mul",@_); }
+sub main'div   { &out1("div",@_); }
+sub main'dec   { &out1("dec",@_); }
+sub main'inc   { &out1("inc",@_); }
+sub main'jmp   { &out1("jmp",@_); }
+sub main'jmp_ptr { &out1p("jmp",@_); }
+sub main'je    { &out1("je",@_); }
+sub main'jle   { &out1("jle",@_); }
+sub main'jz    { &out1("jz",@_); }
+sub main'jge   { &out1("jge",@_); }
+sub main'jl    { &out1("jl",@_); }
+sub main'jb    { &out1("jb",@_); }
+sub main'jnz   { &out1("jnz",@_); }
+sub main'jne   { &out1("jne",@_); }
+sub main'push  { &out1("push",@_); $stack+=4; }
+sub main'pop   { &out1("pop",@_); $stack-=4; }
+sub main'bswap { &out1("bswap",@_); &using486(); }
+sub main'not   { &out1("not",@_); }
+sub main'call  { &out1("call",'_'.$_[0]); }
+sub main'ret   { &out0("ret"); }
+sub main'nop   { &out0("nop"); }
+
+sub out2
+       {
+       local($name,$p1,$p2)=@_;
+       local($l,$t);
+
+       push(@out,"\t$name\t");
+       $t=&conv($p1).",";
+       $l=length($t);
+       push(@out,$t);
+       $l=4-($l+9)/8;
+       push(@out,"\t" x $l);
+       push(@out,&conv($p2));
+       push(@out,"\n");
+       }
+
+sub out0
+       {
+       local($name)=@_;
+
+       push(@out,"\t$name\n");
+       }
+
+sub out1
+       {
+       local($name,$p1)=@_;
+       local($l,$t);
+
+       push(@out,"\t$name\t".&conv($p1)."\n");
+       }
+
+sub conv
+       {
+       local($p)=@_;
+
+       $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
+       return $p;
+       }
+
+sub using486
+       {
+       return if $using486;
+       $using486++;
+       grep(s/\.386/\.486/,@out);
+       }
+
+sub main'file
+       {
+       local($file)=@_;
+
+       local($tmp)=<<"EOF";
+       TITLE   $file.asm
+        .386
+.model FLAT
+EOF
+       push(@out,$tmp);
+       }
+
+sub main'function_begin
+       {
+       local($func,$extra)=@_;
+
+       push(@labels,$func);
+
+       local($tmp)=<<"EOF";
+_TEXT  SEGMENT
+PUBLIC _$func
+$extra
+_$func PROC NEAR
+       push    ebp
+       push    ebx
+       push    esi
+       push    edi
+EOF
+       push(@out,$tmp);
+       $stack=20;
+       }
+
+sub main'function_begin_B
+       {
+       local($func,$extra)=@_;
+
+       local($tmp)=<<"EOF";
+_TEXT  SEGMENT
+PUBLIC _$func
+$extra
+_$func PROC NEAR
+EOF
+       push(@out,$tmp);
+       $stack=4;
+       }
+
+sub main'function_end
+       {
+       local($func)=@_;
+
+       local($tmp)=<<"EOF";
+       pop     edi
+       pop     esi
+       pop     ebx
+       pop     ebp
+       ret
+_$func ENDP
+_TEXT  ENDS
+EOF
+       push(@out,$tmp);
+       $stack=0;
+       %label=();
+       }
+
+sub main'function_end_B
+       {
+       local($func)=@_;
+
+       local($tmp)=<<"EOF";
+_$func ENDP
+_TEXT  ENDS
+EOF
+       push(@out,$tmp);
+       $stack=0;
+       %label=();
+       }
+
+sub main'function_end_A
+       {
+       local($func)=@_;
+
+       local($tmp)=<<"EOF";
+       pop     edi
+       pop     esi
+       pop     ebx
+       pop     ebp
+       ret
+EOF
+       push(@out,$tmp);
+       }
+
+sub main'file_end
+       {
+       push(@out,"END\n");
+       }
+
+sub main'wparam
+       {
+       local($num)=@_;
+
+       return(&main'DWP($stack+$num*4,"esp","",0));
+       }
+
+sub main'swtmp
+       {
+       return(&main'DWP($_[0]*4,"esp","",0));
+       }
+
+# Should use swtmp, which is above esp.  Linix can trash the stack above esp
+#sub main'wtmp
+#      {
+#      local($num)=@_;
+#
+#      return(&main'DWP(-(($num+1)*4),"esp","",0));
+#      }
+
+sub main'comment
+       {
+       foreach (@_)
+               {
+               push(@out,"\t; $_\n");
+               }
+       }
+
+sub main'label
+       {
+       if (!defined($label{$_[0]}))
+               {
+               $label{$_[0]}="\$${label}${_[0]}";
+               $label++;
+               }
+       return($label{$_[0]});
+       }
+
+sub main'set_label
+       {
+       if (!defined($label{$_[0]}))
+               {
+               $label{$_[0]}="${label}${_[0]}";
+               $label++;
+               }
+       push(@out,"$label{$_[0]}:\n");
+       }
+
+sub main'data_word
+       {
+       push(@out,"\tDD\t$_[0]\n");
+       }
+
+sub out1p
+       {
+       local($name,$p1)=@_;
+       local($l,$t);
+
+       push(@out,"\t$name\t ".&conv($p1)."\n");
+       }
diff -druN linux-noipsec/net/ipsec/libdes/asm/perlasm/x86unix.pl linux/net/ipsec/libdes/asm/perlasm/x86unix.pl
--- linux-noipsec/net/ipsec/libdes/asm/perlasm/x86unix.pl       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/asm/perlasm/x86unix.pl       Thu Feb 18 17:41:36 1999
@@ -0,0 +1,403 @@
+#!/usr/local/bin/perl
+
+package x86unix;
+
+$label="L000";
+
+$align=($main'aout)?"4":"16";
+$under=($main'aout)?"_":"";
+$com_start=($main'sol)?"/":"#";
+
+sub main'asm_init_output { @out=(); }
+sub main'asm_get_output { return(@out); }
+sub main'get_labels { return(@labels); }
+sub main'external_label { push(@labels,@_); }
+
+if ($main'cpp)
+       {
+       $align="ALIGN";
+       $under="";
+       $com_start='/*';
+       $com_end='*/';
+       }
+
+%lb=(  'eax',  '%al',
+       'ebx',  '%bl',
+       'ecx',  '%cl',
+       'edx',  '%dl',
+       'ax',   '%al',
+       'bx',   '%bl',
+       'cx',   '%cl',
+       'dx',   '%dl',
+       );
+
+%hb=(  'eax',  '%ah',
+       'ebx',  '%bh',
+       'ecx',  '%ch',
+       'edx',  '%dh',
+       'ax',   '%ah',
+       'bx',   '%bh',
+       'cx',   '%ch',
+       'dx',   '%dh',
+       );
+
+%regs=(        'eax',  '%eax',
+       'ebx',  '%ebx',
+       'ecx',  '%ecx',
+       'edx',  '%edx',
+       'esi',  '%esi',
+       'edi',  '%edi',
+       'ebp',  '%ebp',
+       'esp',  '%esp',
+       );
+
+%reg_val=(
+       'eax',  0x00,
+       'ebx',  0x03,
+       'ecx',  0x01,
+       'edx',  0x02,
+       'esi',  0x06,
+       'edi',  0x07,
+       'ebp',  0x05,
+       'esp',  0x04,
+       );
+
+sub main'LB
+       {
+       (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
+       return($lb{$_[0]});
+       }
+
+sub main'HB
+       {
+       (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
+       return($hb{$_[0]});
+       }
+
+sub main'DWP
+       {
+       local($addr,$reg1,$reg2,$idx)=@_;
+
+       $ret="";
+       $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
+       $reg1="$regs{$reg1}" if defined($regs{$reg1});
+       $reg2="$regs{$reg2}" if defined($regs{$reg2});
+       $ret.=$addr if ($addr ne "") && ($addr ne 0);
+       if ($reg2 ne "")
+               { $ret.="($reg1,$reg2,$idx)"; }
+       else
+               { $ret.="($reg1)" }
+       return($ret);
+       }
+
+sub main'BP
+       {
+       return(&main'DWP(@_));
+       }
+
+#sub main'BP
+#      {
+#      local($addr,$reg1,$reg2,$idx)=@_;
+#
+#      $ret="";
+#
+#      $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
+#      $reg1="$regs{$reg1}" if defined($regs{$reg1});
+#      $reg2="$regs{$reg2}" if defined($regs{$reg2});
+#      $ret.=$addr if ($addr ne "") && ($addr ne 0);
+#      if ($reg2 ne "")
+#              { $ret.="($reg1,$reg2,$idx)"; }
+#      else
+#              { $ret.="($reg1)" }
+#      return($ret);
+#      }
+
+sub main'mov   { &out2("movl",@_); }
+sub main'movb  { &out2("movb",@_); }
+sub main'and   { &out2("andl",@_); }
+sub main'or    { &out2("orl",@_); }
+sub main'shl   { &out2("sall",@_); }
+sub main'shr   { &out2("shrl",@_); }
+sub main'xor   { &out2("xorl",@_); }
+sub main'xorb  { &out2("xorb",@_); }
+sub main'add   { &out2("addl",@_); }
+sub main'adc   { &out2("adcl",@_); }
+sub main'sub   { &out2("subl",@_); }
+sub main'rotl  { &out2("roll",@_); }
+sub main'rotr  { &out2("rorl",@_); }
+sub main'exch  { &out2("xchg",@_); }
+sub main'cmp   { &out2("cmpl",@_); }
+sub main'lea   { &out2("leal",@_); }
+sub main'mul   { &out1("mull",@_); }
+sub main'div   { &out1("divl",@_); }
+sub main'jmp   { &out1("jmp",@_); }
+sub main'jmp_ptr { &out1p("jmp",@_); }
+sub main'je    { &out1("je",@_); }
+sub main'jle   { &out1("jle",@_); }
+sub main'jne   { &out1("jne",@_); }
+sub main'jnz   { &out1("jnz",@_); }
+sub main'jz    { &out1("jz",@_); }
+sub main'jge   { &out1("jge",@_); }
+sub main'jl    { &out1("jl",@_); }
+sub main'jb    { &out1("jb",@_); }
+sub main'dec   { &out1("decl",@_); }
+sub main'inc   { &out1("incl",@_); }
+sub main'push  { &out1("pushl",@_); $stack+=4; }
+sub main'pop   { &out1("popl",@_); $stack-=4; }
+sub main'bswap { &out1("bswapl",@_); }
+sub main'not   { &out1("notl",@_); }
+sub main'call  { &out1("call",$under.$_[0]); }
+sub main'ret   { &out0("ret"); }
+sub main'nop   { &out0("nop"); }
+
+sub out2
+       {
+       local($name,$p1,$p2)=@_;
+       local($l,$ll,$t);
+       local(%special)=(       "roll",0xD1C0,"rorl",0xD1C8,
+                               "rcll",0xD1D0,"rcrl",0xD1D8,
+                               "shll",0xD1E0,"shrl",0xD1E8,
+                               "sarl",0xD1F8);
+       
+       if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
+               {
+               $op=$special{$name}|$reg_val{$p1};
+               $tmp1=sprintf ".byte %d\n",($op>>8)&0xff;
+               $tmp2=sprintf ".byte %d\t",$op     &0xff;
+               push(@out,$tmp1);
+               push(@out,$tmp2);
+
+               $p2=&conv($p2);
+               $p1=&conv($p1);
+               &main'comment("$name $p2 $p1");
+               return;
+               }
+
+       push(@out,"\t$name\t");
+       $t=&conv($p2).",";
+       $l=length($t);
+       push(@out,$t);
+       $ll=4-($l+9)/8;
+       $tmp1=sprintf "\t" x $ll;
+       push(@out,$tmp1);
+       push(@out,&conv($p1)."\n");
+       }
+
+sub out1
+       {
+       local($name,$p1)=@_;
+       local($l,$t);
+
+       push(@out,"\t$name\t".&conv($p1)."\n");
+       }
+
+sub out1p
+       {
+       local($name,$p1)=@_;
+       local($l,$t);
+
+       push(@out,"\t$name\t*".&conv($p1)."\n");
+       }
+
+sub out0
+       {
+       push(@out,"\t$_[0]\n");
+       }
+
+sub conv
+       {
+       local($p)=@_;
+
+#      $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
+
+       $p=$regs{$p} if (defined($regs{$p}));
+
+       $p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
+       $p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
+       return $p;
+       }
+
+sub main'file
+       {
+       local($file)=@_;
+
+       local($tmp)=<<"EOF";
+       .file   "$file.s"
+       .version        "01.01"
+gcc2_compiled.:
+EOF
+       push(@out,$tmp);
+       }
+
+sub main'function_begin
+       {
+       local($func)=@_;
+
+       $func=$under.$func;
+
+       local($tmp)=<<"EOF";
+.text
+       .align $align
+.globl $func
+EOF
+       push(@out,$tmp);
+       if ($main'cpp)
+               { $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
+       else    { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
+       push(@out,"$func:\n");
+       $tmp=<<"EOF";
+       pushl   %ebp
+       pushl   %ebx
+       pushl   %esi
+       pushl   %edi
+
+EOF
+       push(@out,$tmp);
+       $stack=20;
+       }
+
+sub main'function_begin_B
+       {
+       local($func,$extra)=@_;
+
+       $func=$under.$func;
+
+       local($tmp)=<<"EOF";
+.text
+       .align $align
+.globl $func
+EOF
+       push(@out,$tmp);
+       if ($main'cpp)
+               { push(@out,"\tTYPE($func,\@function)\n"); }
+       else    { push(@out,"\t.type    $func,\@function\n"); }
+       push(@out,"$func:\n");
+       $stack=4;
+       }
+
+sub main'function_end
+       {
+       local($func)=@_;
+
+       $func=$under.$func;
+
+       local($tmp)=<<"EOF";
+       popl    %edi
+       popl    %esi
+       popl    %ebx
+       popl    %ebp
+       ret
+.${func}_end:
+EOF
+       push(@out,$tmp);
+       if ($main'cpp)
+               { push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
+       else    { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
+       push(@out,".ident       \"$func\"\n");
+       $stack=0;
+       %label=();
+       }
+
+sub main'function_end_A
+       {
+       local($func)=@_;
+
+       local($tmp)=<<"EOF";
+       popl    %edi
+       popl    %esi
+       popl    %ebx
+       popl    %ebp
+       ret
+EOF
+       push(@out,$tmp);
+       }
+
+sub main'function_end_B
+       {
+       local($func)=@_;
+
+       $func=$under.$func;
+
+       push(@out,".${func}_end:\n");
+       if ($main'cpp)
+               { push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
+       else    { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
+       push(@out,".ident       \"desasm.pl\"\n");
+       $stack=0;
+       %label=();
+       }
+
+sub main'wparam
+       {
+       local($num)=@_;
+
+       return(&main'DWP($stack+$num*4,"esp","",0));
+       }
+
+sub main'stack_push
+       {
+       local($num)=@_;
+       $stack+=$num*4;
+       &main'sub("esp",$num*4);
+       }
+
+sub main'stack_pop
+       {
+       local($num)=@_;
+       $stack-=$num*4;
+       &main'add("esp",$num*4);
+       }
+
+sub main'swtmp
+       {
+       return(&main'DWP($_[0]*4,"esp","",0));
+       }
+
+# Should use swtmp, which is above esp.  Linix can trash the stack above esp
+#sub main'wtmp
+#      {
+#      local($num)=@_;
+#
+#      return(&main'DWP(-($num+1)*4,"esp","",0));
+#      }
+
+sub main'comment
+       {
+       foreach (@_)
+               {
+               if (/^\s*$/)
+                       { push(@out,"\n"); }
+               else
+                       { push(@out,"\t$com_start $_ $com_end\n"); }
+               }
+       }
+
+sub main'label
+       {
+       if (!defined($label{$_[0]}))
+               {
+               $label{$_[0]}=".${label}${_[0]}";
+               $label++;
+               }
+       return($label{$_[0]});
+       }
+
+sub main'set_label
+       {
+       if (!defined($label{$_[0]}))
+               {
+               $label{$_[0]}=".${label}${_[0]}";
+               $label++;
+               }
+       push(@out,".align $align\n") if ($_[1] != 0);
+       push(@out,"$label{$_[0]}:\n");
+       }
+
+sub main'file_end
+       {
+       }
+
+sub main'data_word
+       {
+       push(@out,"\t.long $_[0]\n");
+       }
diff -druN linux-noipsec/net/ipsec/libdes/cbc_enc.c linux/net/ipsec/libdes/cbc_enc.c
--- linux-noipsec/net/ipsec/libdes/cbc_enc.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/cbc_enc.c    Thu Feb 18 17:41:10 1999
@@ -0,0 +1,135 @@
+/* crypto/des/cbc_enc.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des_locl.h"
+
+void des_cbc_encrypt(input, output, length, schedule, ivec, enc)
+des_cblock (*input);
+des_cblock (*output);
+long length;
+des_key_schedule schedule;
+des_cblock (*ivec);
+int enc;
+       {
+       register DES_LONG tin0,tin1;
+       register DES_LONG tout0,tout1,xor0,xor1;
+       register unsigned char *in,*out;
+       register long l=length;
+       DES_LONG tin[2];
+       unsigned char *iv;
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       iv=(unsigned char *)ivec;
+
+       if (enc)
+               {
+               c2l(iv,tout0);
+               c2l(iv,tout1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               if (l != -8)
+                       {
+                       c2ln(in,tin0,tin1,l+8);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               }
+       else
+               {
+               c2l(iv,xor0);
+               c2l(iv,xor1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       xor0=tin0;
+                       xor1=tin1;
+                       }
+               if (l != -8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2cn(tout0,tout1,out,l+8);
+               /*      xor0=tin0;
+                       xor1=tin1; */
+                       }
+               }
+       tin0=tin1=tout0=tout1=xor0=xor1=0;
+       tin[0]=tin[1]=0;
+       }
+
diff -druN linux-noipsec/net/ipsec/libdes/des.h linux/net/ipsec/libdes/des.h
--- linux-noipsec/net/ipsec/libdes/des.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/des.h        Wed Oct  4 16:54:10 2000
@@ -0,0 +1,303 @@
+/* crypto/des/des.org */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING 
+ *
+ * Always modify des.org since des.h is automatically generated from
+ * it during SSLeay configuration.
+ *
+ * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ */
+
+#ifndef HEADER_DES_H
+#define HEADER_DES_H
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* If this is set to 'unsigned int' on a DEC Alpha, this gives about a
+ * %20 speed up (longs are 8 bytes, int's are 4). */
+#ifndef DES_LONG
+/* RCSID $Id$ */
+/* This conditional for FreeS/WAN project. */
+#ifdef __alpha
+#define DES_LONG unsigned int
+#else
+#define DES_LONG unsigned long
+#endif
+#endif
+
+typedef unsigned char des_cblock[8];
+typedef struct des_ks_struct
+       {
+       union   {
+               des_cblock _;
+               /* make sure things are correct size on machines with
+                * 8 byte longs */
+               DES_LONG pad[2];
+               } ks;
+#undef _
+#define _      ks._
+       } des_key_schedule[16];
+
+#define DES_KEY_SZ     (sizeof(des_cblock))
+#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
+
+#define DES_ENCRYPT    1
+#define DES_DECRYPT    0
+
+#define DES_CBC_MODE   0
+#define DES_PCBC_MODE  1
+
+#define des_ecb2_encrypt(i,o,k1,k2,e) \
+       des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
+
+#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
+       des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
+
+#define des_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
+       des_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
+
+#define des_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
+       des_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
+
+#define C_Block des_cblock
+#define Key_schedule des_key_schedule
+#ifdef KERBEROS
+#define ENCRYPT DES_ENCRYPT
+#define DECRYPT DES_DECRYPT
+#endif
+#define KEY_SZ DES_KEY_SZ
+#define string_to_key des_string_to_key
+#define read_pw_string des_read_pw_string
+#define random_key des_random_key
+#define pcbc_encrypt des_pcbc_encrypt
+#define set_key des_set_key
+#define key_sched des_key_sched
+#define ecb_encrypt des_ecb_encrypt
+#define cbc_encrypt des_cbc_encrypt
+#define ncbc_encrypt des_ncbc_encrypt
+#define xcbc_encrypt des_xcbc_encrypt
+#define cbc_cksum des_cbc_cksum
+#define quad_cksum des_quad_cksum
+
+/* For compatibility with the MIT lib - eay 20/05/92 */
+typedef des_key_schedule bit_64;
+#define des_fixup_key_parity des_set_odd_parity
+#define des_check_key_parity check_parity
+
+extern int des_check_key;      /* defaults to false */
+extern int des_rw_mode;                /* defaults to DES_PCBC_MODE */
+
+/* The next line is used to disable full ANSI prototypes, if your
+ * compiler has problems with the prototypes, make sure this line always
+ * evaluates to true :-) */
+#if defined(MSDOS) || defined(__STDC__)
+#undef NOPROTO
+#endif
+#ifndef NOPROTO
+char *des_options(void);
+void des_ecb3_encrypt(des_cblock *input,des_cblock *output,
+       des_key_schedule ks1,des_key_schedule ks2,
+       des_key_schedule ks3, int enc);
+DES_LONG des_cbc_cksum(des_cblock *input,des_cblock *output,
+       long length,des_key_schedule schedule,des_cblock *ivec);
+void des_cbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_ncbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_xcbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,
+       des_cblock *inw,des_cblock *outw,int enc);
+void des_cfb_encrypt(unsigned char *in,unsigned char *out,int numbits,
+       long length,des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_ecb_encrypt(des_cblock *input,des_cblock *output,
+       des_key_schedule ks,int enc);
+void des_encrypt(DES_LONG *data,des_key_schedule ks, int enc);
+void des_encrypt2(DES_LONG *data,des_key_schedule ks, int enc);
+void des_encrypt3(DES_LONG *data, des_key_schedule ks1,
+       des_key_schedule ks2, des_key_schedule ks3);
+void des_decrypt3(DES_LONG *data, des_key_schedule ks1,
+       des_key_schedule ks2, des_key_schedule ks3);
+void des_ede3_cbc_encrypt(des_cblock *input, des_cblock *output, 
+       long length, des_key_schedule ks1, des_key_schedule ks2, 
+       des_key_schedule ks3, des_cblock *ivec, int enc);
+void des_ede3_cfb64_encrypt(unsigned char *in, unsigned char *out,
+       long length, des_key_schedule ks1, des_key_schedule ks2,
+       des_key_schedule ks3, des_cblock *ivec, int *num, int enc);
+void des_ede3_ofb64_encrypt(unsigned char *in, unsigned char *out,
+       long length, des_key_schedule ks1, des_key_schedule ks2,
+       des_key_schedule ks3, des_cblock *ivec, int *num);
+
+void des_xwhite_in2out(des_cblock (*des_key), des_cblock (*in_white),
+       des_cblock (*out_white));
+
+int des_enc_read(int fd,char *buf,int len,des_key_schedule sched,
+       des_cblock *iv);
+int des_enc_write(int fd,char *buf,int len,des_key_schedule sched,
+       des_cblock *iv);
+char *des_fcrypt(const char *buf,const char *salt, char *ret);
+#ifdef PERL5
+char *des_crypt(const char *buf,const char *salt);
+#else
+/* some stupid compilers complain because I have declared char instead
+ * of const char */
+#ifdef HEADER_DES_LOCL_H
+char *crypt(const char *buf,const char *salt);
+#else
+char *crypt();
+#endif
+#endif
+void des_ofb_encrypt(unsigned char *in,unsigned char *out,
+       int numbits,long length,des_key_schedule schedule,des_cblock *ivec);
+void des_pcbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,int enc);
+DES_LONG des_quad_cksum(des_cblock *input,des_cblock *output,
+       long length,int out_count,des_cblock *seed);
+void des_random_seed(des_cblock key);
+void des_random_key(des_cblock ret);
+int des_read_password(des_cblock *key,char *prompt,int verify);
+int des_read_2passwords(des_cblock *key1,des_cblock *key2,
+       char *prompt,int verify);
+int des_read_pw_string(char *buf,int length,char *prompt,int verify);
+void des_set_odd_parity(des_cblock *key);
+int des_is_weak_key(des_cblock *key);
+int des_set_key(des_cblock *key,des_key_schedule schedule);
+int des_key_sched(des_cblock *key,des_key_schedule schedule);
+void des_string_to_key(char *str,des_cblock *key);
+void des_string_to_2keys(char *str,des_cblock *key1,des_cblock *key2);
+void des_cfb64_encrypt(unsigned char *in, unsigned char *out, long length,
+       des_key_schedule schedule, des_cblock *ivec, int *num, int enc);
+void des_ofb64_encrypt(unsigned char *in, unsigned char *out, long length,
+       des_key_schedule schedule, des_cblock *ivec, int *num);
+int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify);
+
+/* Extra functions from Mark Murray <mark@grondar.za> */
+/* The following functions are not in the normal unix build or the
+ * SSLeay build.  When using the SSLeay build, use RAND_seed()
+ * and RAND_bytes() instead. */
+int des_new_random_key(des_cblock *key);
+void des_init_random_number_generator(des_cblock *key);
+void des_set_random_generator_seed(des_cblock *key);
+void des_set_sequence_number(des_cblock new_sequence_number);
+void des_generate_random_block(des_cblock *block);
+
+#else
+
+char *des_options();
+void des_ecb3_encrypt();
+DES_LONG des_cbc_cksum();
+void des_cbc_encrypt();
+void des_ncbc_encrypt();
+void des_xcbc_encrypt();
+void des_cfb_encrypt();
+void des_ede3_cfb64_encrypt();
+void des_ede3_ofb64_encrypt();
+void des_ecb_encrypt();
+void des_encrypt();
+void des_encrypt2();
+void des_encrypt3();
+void des_decrypt3();
+void des_ede3_cbc_encrypt();
+int des_enc_read();
+int des_enc_write();
+char *des_fcrypt();
+#ifdef PERL5
+char *des_crypt();
+#else
+char *crypt();
+#endif
+void des_ofb_encrypt();
+void des_pcbc_encrypt();
+DES_LONG des_quad_cksum();
+void des_random_seed();
+void des_random_key();
+int des_read_password();
+int des_read_2passwords();
+int des_read_pw_string();
+void des_set_odd_parity();
+int des_is_weak_key();
+int des_set_key();
+int des_key_sched();
+void des_string_to_key();
+void des_string_to_2keys();
+void des_cfb64_encrypt();
+void des_ofb64_encrypt();
+int des_read_pw();
+void des_xwhite_in2out();
+
+/* Extra functions from Mark Murray <mark@grondar.za> */
+/* The following functions are not in the normal unix build or the
+ * SSLeay build.  When using the SSLeay build, use RAND_seed()
+ * and RAND_bytes() instead. */
+#ifdef FreeBSD
+int des_new_random_key();
+void des_init_random_number_generator();
+void des_set_random_generator_seed();
+void des_set_sequence_number();
+void des_generate_random_block();
+#endif
+
+#endif
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif
diff -druN linux-noipsec/net/ipsec/libdes/des_enc.c linux/net/ipsec/libdes/des_enc.c
--- linux-noipsec/net/ipsec/libdes/des_enc.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/des_enc.c    Thu Feb 18 17:41:12 1999
@@ -0,0 +1,502 @@
+/* crypto/des/des_enc.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des_locl.h"
+
+void des_encrypt(data, ks, enc)
+DES_LONG *data;
+des_key_schedule ks;
+int enc;
+       {
+       register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+       register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+#ifndef DES_UNROLL
+       register int i;
+#endif
+       register DES_LONG *s;
+
+       r=data[0];
+       l=data[1];
+
+       IP(r,l);
+       /* Things have been modified so that the initial rotate is
+        * done outside the loop.  This required the
+        * des_SPtrans values in sp.h to be rotated 1 bit to the right.
+        * One perl script later and things have a 5% speed up on a sparc2.
+        * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+        * for pointing this out. */
+       /* clear the top bits on machines with 8byte longs */
+       /* shift left by 2 */
+       r=ROTATE(r,29)&0xffffffffL;
+       l=ROTATE(l,29)&0xffffffffL;
+
+       s=(DES_LONG *)ks;
+       /* I don't know if it is worth the effort of loop unrolling the
+        * inner loop */
+       if (enc)
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r, 0); /*  1 */
+               D_ENCRYPT(r,l, 2); /*  2 */
+               D_ENCRYPT(l,r, 4); /*  3 */
+               D_ENCRYPT(r,l, 6); /*  4 */
+               D_ENCRYPT(l,r, 8); /*  5 */
+               D_ENCRYPT(r,l,10); /*  6 */
+               D_ENCRYPT(l,r,12); /*  7 */
+               D_ENCRYPT(r,l,14); /*  8 */
+               D_ENCRYPT(l,r,16); /*  9 */
+               D_ENCRYPT(r,l,18); /*  10 */
+               D_ENCRYPT(l,r,20); /*  11 */
+               D_ENCRYPT(r,l,22); /*  12 */
+               D_ENCRYPT(l,r,24); /*  13 */
+               D_ENCRYPT(r,l,26); /*  14 */
+               D_ENCRYPT(l,r,28); /*  15 */
+               D_ENCRYPT(r,l,30); /*  16 */
+#else
+               for (i=0; i<32; i+=8)
+                       {
+                       D_ENCRYPT(l,r,i+0); /*  1 */
+                       D_ENCRYPT(r,l,i+2); /*  2 */
+                       D_ENCRYPT(l,r,i+4); /*  3 */
+                       D_ENCRYPT(r,l,i+6); /*  4 */
+                       }
+#endif
+               }
+       else
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r,30); /* 16 */
+               D_ENCRYPT(r,l,28); /* 15 */
+               D_ENCRYPT(l,r,26); /* 14 */
+               D_ENCRYPT(r,l,24); /* 13 */
+               D_ENCRYPT(l,r,22); /* 12 */
+               D_ENCRYPT(r,l,20); /* 11 */
+               D_ENCRYPT(l,r,18); /* 10 */
+               D_ENCRYPT(r,l,16); /*  9 */
+               D_ENCRYPT(l,r,14); /*  8 */
+               D_ENCRYPT(r,l,12); /*  7 */
+               D_ENCRYPT(l,r,10); /*  6 */
+               D_ENCRYPT(r,l, 8); /*  5 */
+               D_ENCRYPT(l,r, 6); /*  4 */
+               D_ENCRYPT(r,l, 4); /*  3 */
+               D_ENCRYPT(l,r, 2); /*  2 */
+               D_ENCRYPT(r,l, 0); /*  1 */
+#else
+               for (i=30; i>0; i-=8)
+                       {
+                       D_ENCRYPT(l,r,i-0); /* 16 */
+                       D_ENCRYPT(r,l,i-2); /* 15 */
+                       D_ENCRYPT(l,r,i-4); /* 14 */
+                       D_ENCRYPT(r,l,i-6); /* 13 */
+                       }
+#endif
+               }
+
+       /* rotate and clear the top bits on machines with 8byte longs */
+       l=ROTATE(l,3)&0xffffffffL;
+       r=ROTATE(r,3)&0xffffffffL;
+
+       FP(r,l);
+       data[0]=l;
+       data[1]=r;
+       l=r=t=u=0;
+       }
+
+void des_encrypt2(data, ks, enc)
+DES_LONG *data;
+des_key_schedule ks;
+int enc;
+       {
+       register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+       register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+#ifndef DES_UNROLL
+       register int i;
+#endif
+       register DES_LONG *s;
+
+       r=data[0];
+       l=data[1];
+
+       /* Things have been modified so that the initial rotate is
+        * done outside the loop.  This required the
+        * des_SPtrans values in sp.h to be rotated 1 bit to the right.
+        * One perl script later and things have a 5% speed up on a sparc2.
+        * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+        * for pointing this out. */
+       /* clear the top bits on machines with 8byte longs */
+       r=ROTATE(r,29)&0xffffffffL;
+       l=ROTATE(l,29)&0xffffffffL;
+
+       s=(DES_LONG *)ks;
+       /* I don't know if it is worth the effort of loop unrolling the
+        * inner loop */
+       if (enc)
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r, 0); /*  1 */
+               D_ENCRYPT(r,l, 2); /*  2 */
+               D_ENCRYPT(l,r, 4); /*  3 */
+               D_ENCRYPT(r,l, 6); /*  4 */
+               D_ENCRYPT(l,r, 8); /*  5 */
+               D_ENCRYPT(r,l,10); /*  6 */
+               D_ENCRYPT(l,r,12); /*  7 */
+               D_ENCRYPT(r,l,14); /*  8 */
+               D_ENCRYPT(l,r,16); /*  9 */
+               D_ENCRYPT(r,l,18); /*  10 */
+               D_ENCRYPT(l,r,20); /*  11 */
+               D_ENCRYPT(r,l,22); /*  12 */
+               D_ENCRYPT(l,r,24); /*  13 */
+               D_ENCRYPT(r,l,26); /*  14 */
+               D_ENCRYPT(l,r,28); /*  15 */
+               D_ENCRYPT(r,l,30); /*  16 */
+#else
+               for (i=0; i<32; i+=8)
+                       {
+                       D_ENCRYPT(l,r,i+0); /*  1 */
+                       D_ENCRYPT(r,l,i+2); /*  2 */
+                       D_ENCRYPT(l,r,i+4); /*  3 */
+                       D_ENCRYPT(r,l,i+6); /*  4 */
+                       }
+#endif
+               }
+       else
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r,30); /* 16 */
+               D_ENCRYPT(r,l,28); /* 15 */
+               D_ENCRYPT(l,r,26); /* 14 */
+               D_ENCRYPT(r,l,24); /* 13 */
+               D_ENCRYPT(l,r,22); /* 12 */
+               D_ENCRYPT(r,l,20); /* 11 */
+               D_ENCRYPT(l,r,18); /* 10 */
+               D_ENCRYPT(r,l,16); /*  9 */
+               D_ENCRYPT(l,r,14); /*  8 */
+               D_ENCRYPT(r,l,12); /*  7 */
+               D_ENCRYPT(l,r,10); /*  6 */
+               D_ENCRYPT(r,l, 8); /*  5 */
+               D_ENCRYPT(l,r, 6); /*  4 */
+               D_ENCRYPT(r,l, 4); /*  3 */
+               D_ENCRYPT(l,r, 2); /*  2 */
+               D_ENCRYPT(r,l, 0); /*  1 */
+#else
+               for (i=30; i>0; i-=8)
+                       {
+                       D_ENCRYPT(l,r,i-0); /* 16 */
+                       D_ENCRYPT(r,l,i-2); /* 15 */
+                       D_ENCRYPT(l,r,i-4); /* 14 */
+                       D_ENCRYPT(r,l,i-6); /* 13 */
+                       }
+#endif
+               }
+       /* rotate and clear the top bits on machines with 8byte longs */
+       data[0]=ROTATE(l,3)&0xffffffffL;
+       data[1]=ROTATE(r,3)&0xffffffffL;
+       l=r=t=u=0;
+       }
+
+void des_encrypt3(data,ks1,ks2,ks3)
+DES_LONG *data;
+des_key_schedule ks1;
+des_key_schedule ks2;
+des_key_schedule ks3;
+       {
+       register DES_LONG l,r;
+
+       l=data[0];
+       r=data[1];
+       IP(l,r);
+       data[0]=l;
+       data[1]=r;
+       des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
+       des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
+       des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
+       l=data[0];
+       r=data[1];
+       FP(r,l);
+       data[0]=l;
+       data[1]=r;
+       }
+
+void des_decrypt3(data,ks1,ks2,ks3)
+DES_LONG *data;
+des_key_schedule ks1;
+des_key_schedule ks2;
+des_key_schedule ks3;
+       {
+       register DES_LONG l,r;
+
+       l=data[0];
+       r=data[1];
+       IP(l,r);
+       data[0]=l;
+       data[1]=r;
+       des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
+       des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
+       des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
+       l=data[0];
+       r=data[1];
+       FP(r,l);
+       data[0]=l;
+       data[1]=r;
+       }
+
+#ifndef DES_DEFAULT_OPTIONS
+
+void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
+des_cblock (*input);
+des_cblock (*output);
+long length;
+des_key_schedule schedule;
+des_cblock (*ivec);
+int enc;
+       {
+       register DES_LONG tin0,tin1;
+       register DES_LONG tout0,tout1,xor0,xor1;
+       register unsigned char *in,*out;
+       register long l=length;
+       DES_LONG tin[2];
+       unsigned char *iv;
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       iv=(unsigned char *)ivec;
+
+       if (enc)
+               {
+               c2l(iv,tout0);
+               c2l(iv,tout1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               if (l != -8)
+                       {
+                       c2ln(in,tin0,tin1,l+8);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               iv=(unsigned char *)ivec;
+               l2c(tout0,iv);
+               l2c(tout1,iv);
+               }
+       else
+               {
+               c2l(iv,xor0);
+               c2l(iv,xor1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       xor0=tin0;
+                       xor1=tin1;
+                       }
+               if (l != -8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2cn(tout0,tout1,out,l+8);
+                       xor0=tin0;
+                       xor1=tin1;
+                       }
+
+               iv=(unsigned char *)ivec;
+               l2c(xor0,iv);
+               l2c(xor1,iv);
+               }
+       tin0=tin1=tout0=tout1=xor0=xor1=0;
+       tin[0]=tin[1]=0;
+       }
+
+void des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, enc)
+des_cblock (*input);
+des_cblock (*output);
+long length;
+des_key_schedule ks1;
+des_key_schedule ks2;
+des_key_schedule ks3;
+des_cblock (*ivec);
+int enc;
+       {
+       register DES_LONG tin0,tin1;
+       register DES_LONG tout0,tout1,xor0,xor1;
+       register unsigned char *in,*out;
+       register long l=length;
+       DES_LONG tin[2];
+       unsigned char *iv;
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       iv=(unsigned char *)ivec;
+
+       if (enc)
+               {
+               c2l(iv,tout0);
+               c2l(iv,tout1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       tin0^=tout0;
+                       tin1^=tout1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       }
+               if (l != -8)
+                       {
+                       c2ln(in,tin0,tin1,l+8);
+                       tin0^=tout0;
+                       tin1^=tout1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       }
+               iv=(unsigned char *)ivec;
+               l2c(tout0,iv);
+               l2c(tout1,iv);
+               }
+       else
+               {
+               register DES_LONG t0,t1;
+
+               c2l(iv,xor0);
+               c2l(iv,xor1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+
+                       t0=tin0;
+                       t1=tin1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+
+                       tout0^=xor0;
+                       tout1^=xor1;
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       xor0=t0;
+                       xor1=t1;
+                       }
+               if (l != -8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       
+                       t0=tin0;
+                       t1=tin1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+               
+                       tout0^=xor0;
+                       tout1^=xor1;
+                       l2cn(tout0,tout1,out,l+8);
+                       xor0=t0;
+                       xor1=t1;
+                       }
+
+               iv=(unsigned char *)ivec;
+               l2c(xor0,iv);
+               l2c(xor1,iv);
+               }
+       tin0=tin1=tout0=tout1=xor0=xor1=0;
+       tin[0]=tin[1]=0;
+       }
+
+#endif /* DES_DEFAULT_OPTIONS */
diff -druN linux-noipsec/net/ipsec/libdes/des_locl.h linux/net/ipsec/libdes/des_locl.h
--- linux-noipsec/net/ipsec/libdes/des_locl.h   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/des_locl.h   Wed Oct  4 16:54:10 2000
@@ -0,0 +1,511 @@
+/* crypto/des/des_locl.org */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ *
+ * Always modify des_locl.org since des_locl.h is automatically generated from
+ * it during SSLeay configuration.
+ *
+ * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ */
+
+#ifndef HEADER_DES_LOCL_H
+#define HEADER_DES_LOCL_H
+
+#if defined(WIN32) || defined(WIN16)
+#ifndef MSDOS
+#define MSDOS
+#endif
+#endif
+
+#include "des.h"
+
+#ifndef DES_DEFAULT_OPTIONS
+/* the following is tweaked from a config script, that is why it is a
+ * protected undef/define */
+#ifndef DES_PTR
+#define DES_PTR
+#endif
+
+/* This helps C compiler generate the correct code for multiple functional
+ * units.  It reduces register dependancies at the expense of 2 more
+ * registers */
+#ifndef DES_RISC1
+#define DES_RISC1
+#endif
+
+#ifndef DES_RISC2
+#undef DES_RISC2
+#endif
+
+#if defined(DES_RISC1) && defined(DES_RISC2)
+YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
+#endif
+
+/* Unroll the inner loop, this sometimes helps, sometimes hinders.
+ * Very mucy CPU dependant */
+#ifndef DES_UNROLL
+#define DES_UNROLL
+#endif
+
+/* These default values were supplied by
+ * Peter Gutman <pgut001@cs.auckland.ac.nz>
+ * They are only used if nothing else has been defined */
+#if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL)
+/* Special defines which change the way the code is built depending on the
+   CPU and OS.  For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
+   even newer MIPS CPU's, but at the moment one size fits all for
+   optimization options.  Older Sparc's work better with only UNROLL, but
+   there's no way to tell at compile time what it is you're running on */
+ 
+#if defined( sun )             /* Newer Sparc's */
+  #define DES_PTR
+  #define DES_RISC1
+  #define DES_UNROLL
+#elif defined( __ultrix )      /* Older MIPS */
+  #define DES_PTR
+  #define DES_RISC2
+  #define DES_UNROLL
+#elif defined( __osf1__ )      /* Alpha */
+  #define DES_PTR
+  #define DES_RISC2
+#elif defined ( _AIX )         /* RS6000 */
+  /* Unknown */
+#elif defined( __hpux )                /* HP-PA */
+  /* Unknown */
+#elif defined( __aux )         /* 68K */
+  /* Unknown */
+#elif defined( __dgux )                /* 88K (but P6 in latest boxes) */
+  #define DES_UNROLL
+#elif defined( __sgi )         /* Newer MIPS */
+  #define DES_PTR
+  #define DES_RISC2
+  #define DES_UNROLL
+#elif defined( i386 )          /* x86 boxes, should be gcc */
+  #define DES_PTR
+  #define DES_RISC1
+  #define DES_UNROLL
+#endif /* Systems-specific speed defines */
+#endif
+
+#endif /* DES_DEFAULT_OPTIONS */
+
+#ifdef MSDOS           /* Visual C++ 2.1 (Windows NT/95) */
+#include <stdlib.h>
+#include <errno.h>
+#include <time.h>
+#include <io.h>
+#ifndef RAND
+#define RAND
+#endif
+#undef NOPROTO
+#endif
+
+#if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS)
+#include <string.h>
+#endif
+
+#ifndef RAND
+#define RAND
+#endif
+
+#ifdef linux
+#undef RAND
+#endif
+
+#ifdef MSDOS
+#define getpid() 2
+#define RAND
+#undef NOPROTO
+#endif
+
+#if defined(NOCONST)
+#define const
+#endif
+
+#ifdef __STDC__
+#undef NOPROTO
+#endif
+
+#ifdef RAND
+#define srandom(s) srand(s)
+#define random rand
+#endif
+
+#define ITERATIONS 16
+#define HALF_ITERATIONS 8
+
+/* used in des_read and des_write */
+#define MAXWRITE       (1024*16)
+#define BSIZE          (MAXWRITE+4)
+
+#define c2l(c,l)       (l =((DES_LONG)(*((c)++)))    , \
+                        l|=((DES_LONG)(*((c)++)))<< 8L, \
+                        l|=((DES_LONG)(*((c)++)))<<16L, \
+                        l|=((DES_LONG)(*((c)++)))<<24L)
+
+/* NOTE - c is not incremented as per c2l */
+#define c2ln(c,l1,l2,n)        { \
+                       c+=n; \
+                       l1=l2=0; \
+                       switch (n) { \
+                       case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
+                       case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \
+                       case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \
+                       case 5: l2|=((DES_LONG)(*(--(c))));     \
+                       case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
+                       case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \
+                       case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \
+                       case 1: l1|=((DES_LONG)(*(--(c))));     \
+                               } \
+                       }
+
+#define l2c(l,c)       (*((c)++)=(unsigned char)(((l)     )&0xff), \
+                        *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>>24L)&0xff))
+
+/* replacements for htonl and ntohl since I have no idea what to do
+ * when faced with machines with 8 byte longs. */
+#define HDRSIZE 4
+
+#define n2l(c,l)       (l =((DES_LONG)(*((c)++)))<<24L, \
+                        l|=((DES_LONG)(*((c)++)))<<16L, \
+                        l|=((DES_LONG)(*((c)++)))<< 8L, \
+                        l|=((DES_LONG)(*((c)++))))
+
+#define l2n(l,c)       (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)     )&0xff))
+
+/* NOTE - c is not incremented as per l2c */
+#define l2cn(l1,l2,c,n)        { \
+                       c+=n; \
+                       switch (n) { \
+                       case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
+                       case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
+                       case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
+                       case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
+                       case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
+                       case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
+                       case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
+                       case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
+                               } \
+                       }
+
+#if defined(WIN32)
+#define        ROTATE(a,n)     (_lrotr(a,n))
+#else
+#define        ROTATE(a,n)     (((a)>>(n))+((a)<<(32-(n))))
+#endif
+
+/* Don't worry about the LOAD_DATA() stuff, that is used by
+ * fcrypt() to add it's little bit to the front */
+
+#ifdef DES_FCRYPT
+
+#define LOAD_DATA_tmp(R,S,u,t,E0,E1) \
+       { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); }
+
+#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
+       t=R^(R>>16L); \
+       u=t&E0; t&=E1; \
+       tmp=(u<<16); u^=R^s[S  ]; u^=tmp; \
+       tmp=(t<<16); t^=R^s[S+1]; t^=tmp
+#else
+#define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g)
+#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
+       u=R^s[S  ]; \
+       t=R^s[S+1]
+#endif
+
+/* The changes to this macro may help or hinder, depending on the
+ * compiler and the achitecture.  gcc2 always seems to do well :-).
+ * Inspired by Dana How <how@isl.stanford.edu>
+ * DO NOT use the alternative version on machines with 8 byte longs.
+ * It does not seem to work on the Alpha, even when DES_LONG is 4
+ * bytes, probably an issue of accessing non-word aligned objects :-( */
+#ifdef DES_PTR
+
+/* It recently occured to me that 0^0^0^0^0^0^0 == 0, so there
+ * is no reason to not xor all the sub items together.  This potentially
+ * saves a register since things can be xored directly into L */
+
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+#define D_ENCRYPT(LL,R,S) { \
+       unsigned int u1,u2,u3; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0xfc; \
+       u2&=0xfc; \
+       t=ROTATE(t,4); \
+       u>>=16L; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP      +u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \
+       u3=(int)(u>>8L); \
+       u1=(int)u&0xfc; \
+       u3&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+u3); \
+       u2=(int)t>>8L; \
+       u1=(int)t&0xfc; \
+       u2&=0xfc; \
+       t>>=16L; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \
+       u3=(int)t>>8L; \
+       u1=(int)t&0xfc; \
+       u3&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+u3); }
+#endif
+#ifdef DES_RISC2
+#define D_ENCRYPT(LL,R,S) { \
+       unsigned int u1,u2,s1,s2; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0xfc; \
+       u2&=0xfc; \
+       t=ROTATE(t,4); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP      +u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \
+       s1=(int)(u>>16L); \
+       s2=(int)(u>>24L); \
+       s1&=0xfc; \
+       s2&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+s1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+s2); \
+       u2=(int)t>>8L; \
+       u1=(int)t&0xfc; \
+       u2&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \
+       s1=(int)(t>>16L); \
+       s2=(int)(t>>24L); \
+       s1&=0xfc; \
+       s2&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+s1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+s2); }
+#endif
+#else
+#define D_ENCRYPT(LL,R,S) { \
+       LOAD_DATA_tmp(R,S,u,t,E0,E1); \
+       t=ROTATE(t,4); \
+       LL^= \
+       *(DES_LONG *)((unsigned char *)des_SP      +((u     )&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x200+((u>> 8L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x400+((u>>16L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x600+((u>>24L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x100+((t     )&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x300+((t>> 8L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x500+((t>>16L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x700+((t>>24L)&0xfc)); }
+#endif
+
+#else /* original version */
+
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+#define D_ENCRYPT(LL,R,S) {\
+       unsigned int u1,u2,u3; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u>>=2L; \
+       t=ROTATE(t,6); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0x3f; \
+       u2&=0x3f; \
+       u>>=16L; \
+       LL^=des_SPtrans[0][u1]; \
+       LL^=des_SPtrans[2][u2]; \
+       u3=(int)u>>8L; \
+       u1=(int)u&0x3f; \
+       u3&=0x3f; \
+       LL^=des_SPtrans[4][u1]; \
+       LL^=des_SPtrans[6][u3]; \
+       u2=(int)t>>8L; \
+       u1=(int)t&0x3f; \
+       u2&=0x3f; \
+       t>>=16L; \
+       LL^=des_SPtrans[1][u1]; \
+       LL^=des_SPtrans[3][u2]; \
+       u3=(int)t>>8L; \
+       u1=(int)t&0x3f; \
+       u3&=0x3f; \
+       LL^=des_SPtrans[5][u1]; \
+       LL^=des_SPtrans[7][u3]; }
+#endif
+#ifdef DES_RISC2
+#define D_ENCRYPT(LL,R,S) {\
+       unsigned int u1,u2,s1,s2; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u>>=2L; \
+       t=ROTATE(t,6); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0x3f; \
+       u2&=0x3f; \
+       LL^=des_SPtrans[0][u1]; \
+       LL^=des_SPtrans[2][u2]; \
+       s1=(int)u>>16L; \
+       s2=(int)u>>24L; \
+       s1&=0x3f; \
+       s2&=0x3f; \
+       LL^=des_SPtrans[4][s1]; \
+       LL^=des_SPtrans[6][s2]; \
+       u2=(int)t>>8L; \
+       u1=(int)t&0x3f; \
+       u2&=0x3f; \
+       LL^=des_SPtrans[1][u1]; \
+       LL^=des_SPtrans[3][u2]; \
+       s1=(int)t>>16; \
+       s2=(int)t>>24L; \
+       s1&=0x3f; \
+       s2&=0x3f; \
+       LL^=des_SPtrans[5][s1]; \
+       LL^=des_SPtrans[7][s2]; }
+#endif
+
+#else
+
+#define D_ENCRYPT(LL,R,S) {\
+       LOAD_DATA_tmp(R,S,u,t,E0,E1); \
+       t=ROTATE(t,4); \
+       LL^=\
+               des_SPtrans[0][(u>> 2L)&0x3f]^ \
+               des_SPtrans[2][(u>>10L)&0x3f]^ \
+               des_SPtrans[4][(u>>18L)&0x3f]^ \
+               des_SPtrans[6][(u>>26L)&0x3f]^ \
+               des_SPtrans[1][(t>> 2L)&0x3f]^ \
+               des_SPtrans[3][(t>>10L)&0x3f]^ \
+               des_SPtrans[5][(t>>18L)&0x3f]^ \
+               des_SPtrans[7][(t>>26L)&0x3f]; }
+#endif
+#endif
+
+       /* IP and FP
+        * The problem is more of a geometric problem that random bit fiddling.
+        0  1  2  3  4  5  6  7      62 54 46 38 30 22 14  6
+        8  9 10 11 12 13 14 15      60 52 44 36 28 20 12  4
+       16 17 18 19 20 21 22 23      58 50 42 34 26 18 10  2
+       24 25 26 27 28 29 30 31  to  56 48 40 32 24 16  8  0
+
+       32 33 34 35 36 37 38 39      63 55 47 39 31 23 15  7
+       40 41 42 43 44 45 46 47      61 53 45 37 29 21 13  5
+       48 49 50 51 52 53 54 55      59 51 43 35 27 19 11  3
+       56 57 58 59 60 61 62 63      57 49 41 33 25 17  9  1
+
+       The output has been subject to swaps of the form
+       0 1 -> 3 1 but the odd and even bits have been put into
+       2 3    2 0
+       different words.  The main trick is to remember that
+       t=((l>>size)^r)&(mask);
+       r^=t;
+       l^=(t<<size);
+       can be used to swap and move bits between words.
+
+       So l =  0  1  2  3  r = 16 17 18 19
+               4  5  6  7      20 21 22 23
+               8  9 10 11      24 25 26 27
+              12 13 14 15      28 29 30 31
+       becomes (for size == 2 and mask == 0x3333)
+          t =   2^16  3^17 -- --   l =  0  1 16 17  r =  2  3 18 19
+                6^20  7^21 -- --        4  5 20 21       6  7 22 23
+               10^24 11^25 -- --        8  9 24 25      10 11 24 25
+               14^28 15^29 -- --       12 13 28 29      14 15 28 29
+
+       Thanks for hints from Richard Outerbridge - he told me IP&FP
+       could be done in 15 xor, 10 shifts and 5 ands.
+       When I finally started to think of the problem in 2D
+       I first got ~42 operations without xors.  When I remembered
+       how to use xors :-) I got it to its final state.
+       */
+#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
+       (b)^=(t),\
+       (a)^=((t)<<(n)))
+
+#define IP(l,r) \
+       { \
+       register DES_LONG tt; \
+       PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
+       PERM_OP(l,r,tt,16,0x0000ffffL); \
+       PERM_OP(r,l,tt, 2,0x33333333L); \
+       PERM_OP(l,r,tt, 8,0x00ff00ffL); \
+       PERM_OP(r,l,tt, 1,0x55555555L); \
+       }
+
+#define FP(l,r) \
+       { \
+       register DES_LONG tt; \
+       PERM_OP(l,r,tt, 1,0x55555555L); \
+       PERM_OP(r,l,tt, 8,0x00ff00ffL); \
+       PERM_OP(l,r,tt, 2,0x33333333L); \
+       PERM_OP(r,l,tt,16,0x0000ffffL); \
+       PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
+       }
+
+extern const DES_LONG des_SPtrans[8][64];
+
+#ifndef NOPROTO
+void fcrypt_body(DES_LONG *out,des_key_schedule ks,
+       DES_LONG Eswap0, DES_LONG Eswap1);
+#else
+void fcrypt_body();
+#endif
+
+#endif
diff -druN linux-noipsec/net/ipsec/libdes/des_opts.c linux/net/ipsec/libdes/des_opts.c
--- linux-noipsec/net/ipsec/libdes/des_opts.c   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/des_opts.c   Thu Feb 18 17:41:13 1999
@@ -0,0 +1,620 @@
+/* crypto/des/des_opts.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* define PART1, PART2, PART3 or PART4 to build only with a few of the options.
+ * This is for machines with 64k code segment size restrictions. */
+
+#ifndef MSDOS
+#define TIMES
+#endif
+
+#include <stdio.h>
+#ifndef MSDOS
+#include <unistd.h>
+#else
+#include <io.h>
+extern void exit();
+#endif
+#include <signal.h>
+#ifndef VMS
+#ifndef _IRIX
+#include <time.h>
+#endif
+#ifdef TIMES
+#include <sys/types.h>
+#include <sys/times.h>
+#endif
+#else /* VMS */
+#include <types.h>
+struct tms {
+       time_t tms_utime;
+       time_t tms_stime;
+       time_t tms_uchild;      /* I dunno...  */
+       time_t tms_uchildsys;   /* so these names are a guess :-) */
+       }
+#endif
+#ifndef TIMES
+#include <sys/timeb.h>
+#endif
+
+#ifdef sun
+#include <limits.h>
+#include <sys/param.h>
+#endif
+
+#include "des.h"
+#include "spr.h"
+
+#define DES_DEFAULT_OPTIONS
+
+#if !defined(PART1) && !defined(PART2) && !defined(PART3) && !defined(PART4)
+#define PART1
+#define PART2
+#define PART3
+#define PART4
+#endif
+
+#ifdef PART1
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#define des_encrypt  des_encrypt_u4_cisc_idx
+#define des_encrypt2 des_encrypt2_u4_cisc_idx
+#define des_encrypt3 des_encrypt3_u4_cisc_idx
+#define des_decrypt3 des_decrypt3_u4_cisc_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_cisc_idx
+#define des_encrypt2 des_encrypt2_u16_cisc_idx
+#define des_encrypt3 des_encrypt3_u16_cisc_idx
+#define des_decrypt3 des_decrypt3_u16_cisc_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#undef DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc1_idx
+#define des_encrypt2 des_encrypt2_u4_risc1_idx
+#define des_encrypt3 des_encrypt3_u4_risc1_idx
+#define des_decrypt3 des_decrypt3_u4_risc1_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+#ifdef PART2
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc2_idx
+#define des_encrypt2 des_encrypt2_u4_risc2_idx
+#define des_encrypt3 des_encrypt3_u4_risc2_idx
+#define des_decrypt3 des_decrypt3_u4_risc2_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc1_idx
+#define des_encrypt2 des_encrypt2_u16_risc1_idx
+#define des_encrypt3 des_encrypt3_u16_risc1_idx
+#define des_decrypt3 des_decrypt3_u16_risc1_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc2_idx
+#define des_encrypt2 des_encrypt2_u16_risc2_idx
+#define des_encrypt3 des_encrypt3_u16_risc2_idx
+#define des_decrypt3 des_decrypt3_u16_risc2_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+#ifdef PART3
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_cisc_ptr
+#define des_encrypt2 des_encrypt2_u4_cisc_ptr
+#define des_encrypt3 des_encrypt3_u4_cisc_ptr
+#define des_decrypt3 des_decrypt3_u4_cisc_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_cisc_ptr
+#define des_encrypt2 des_encrypt2_u16_cisc_ptr
+#define des_encrypt3 des_encrypt3_u16_cisc_ptr
+#define des_decrypt3 des_decrypt3_u16_cisc_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#undef DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc1_ptr
+#define des_encrypt2 des_encrypt2_u4_risc1_ptr
+#define des_encrypt3 des_encrypt3_u4_risc1_ptr
+#define des_decrypt3 des_decrypt3_u4_risc1_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+#ifdef PART4
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc2_ptr
+#define des_encrypt2 des_encrypt2_u4_risc2_ptr
+#define des_encrypt3 des_encrypt3_u4_risc2_ptr
+#define des_decrypt3 des_decrypt3_u4_risc2_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc1_ptr
+#define des_encrypt2 des_encrypt2_u16_risc1_ptr
+#define des_encrypt3 des_encrypt3_u16_risc1_ptr
+#define des_decrypt3 des_decrypt3_u16_risc1_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc2_ptr
+#define des_encrypt2 des_encrypt2_u16_risc2_ptr
+#define des_encrypt3 des_encrypt3_u16_risc2_ptr
+#define des_decrypt3 des_decrypt3_u16_risc2_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+/* The following if from times(3) man page.  It may need to be changed */
+#ifndef HZ
+# ifndef CLK_TCK
+#  ifndef _BSD_CLK_TCK_ /* FreeBSD fix */
+#   ifndef VMS
+#    define HZ 100.0
+#   else /* VMS */
+#    define HZ 100.0
+#   endif
+#  else /* _BSD_CLK_TCK_ */
+#   define HZ ((double)_BSD_CLK_TCK_)
+#  endif
+# else /* CLK_TCK */
+#  define HZ ((double)CLK_TCK)
+# endif
+#endif
+
+#define BUFSIZE        ((long)1024)
+long run=0;
+
+#ifndef NOPROTO
+double Time_F(int s);
+#else
+double Time_F();
+#endif
+
+#ifdef SIGALRM
+#if defined(__STDC__) || defined(sgi)
+#define SIGRETTYPE void
+#else
+#define SIGRETTYPE int
+#endif
+
+#ifndef NOPROTO
+SIGRETTYPE sig_done(int sig);
+#else
+SIGRETTYPE sig_done();
+#endif
+
+SIGRETTYPE sig_done(sig)
+int sig;
+       {
+       signal(SIGALRM,sig_done);
+       run=0;
+#ifdef LINT
+       sig=sig;
+#endif
+       }
+#endif
+
+#define START  0
+#define STOP   1
+
+double Time_F(s)
+int s;
+       {
+       double ret;
+#ifdef TIMES
+       static struct tms tstart,tend;
+
+       if (s == START)
+               {
+               times(&tstart);
+               return(0);
+               }
+       else
+               {
+               times(&tend);
+               ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
+               return((ret == 0.0)?1e-6:ret);
+               }
+#else /* !times() */
+       static struct timeb tstart,tend;
+       long i;
+
+       if (s == START)
+               {
+               ftime(&tstart);
+               return(0);
+               }
+       else
+               {
+               ftime(&tend);
+               i=(long)tend.millitm-(long)tstart.millitm;
+               ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
+               return((ret == 0.0)?1e-6:ret);
+               }
+#endif
+       }
+
+#ifdef SIGALRM
+#define print_name(name) fprintf(stderr,"Doing %s's for 10 seconds\n",name); alarm(10);
+#else
+#define print_name(name) fprintf(stderr,"Doing %s %ld times\n",name,cb);
+#endif
+       
+#define time_it(func,name,index) \
+       print_name(name); \
+       Time_F(START); \
+       for (count=0,run=1; COND(cb); count++) \
+               { \
+               unsigned long d[2]; \
+               func(d,&(sch[0]),DES_ENCRYPT); \
+               } \
+       tm[index]=Time_F(STOP); \
+       fprintf(stderr,"%ld %s's in %.2f second\n",count,name,tm[index]); \
+       tm[index]=((double)COUNT(cb))/tm[index];
+
+#define print_it(name,index) \
+       fprintf(stderr,"%s bytes per sec = %12.2f (%5.1fuS)\n",name, \
+               tm[index]*8,1.0e6/tm[index]);
+
+int main(argc,argv)
+int argc;
+char **argv;
+       {
+       long count;
+       static unsigned char buf[BUFSIZE];
+       static des_cblock key ={0x12,0x34,0x56,0x78,0x9a,0xbc,0xde,0xf0};
+       static des_cblock key2={0x34,0x56,0x78,0x9a,0xbc,0xde,0xf0,0x12};
+       static des_cblock key3={0x56,0x78,0x9a,0xbc,0xde,0xf0,0x12,0x34};
+       des_key_schedule sch,sch2,sch3;
+       double d,tm[16],max=0;
+       int rank[16];
+       char *str[16];
+       int max_idx=0,i,num=0,j;
+#ifndef SIGALARM
+       long ca,cb,cc,cd,ce;
+#endif
+
+       for (i=0; i<12; i++)
+               {
+               tm[i]=0.0;
+               rank[i]=0;
+               }
+
+#ifndef TIMES
+       fprintf(stderr,"To get the most acurate results, try to run this\n");
+       fprintf(stderr,"program when this computer is idle.\n");
+#endif
+
+       des_set_key((C_Block *)key,sch);
+       des_set_key((C_Block *)key2,sch2);
+       des_set_key((C_Block *)key3,sch3);
+
+#ifndef SIGALRM
+       fprintf(stderr,"First we calculate the approximate speed ...\n");
+       des_set_key((C_Block *)key,sch);
+       count=10;
+       do      {
+               long i;
+               unsigned long data[2];
+
+               count*=2;
+               Time_F(START);
+               for (i=count; i; i--)
+                       des_encrypt(data,&(sch[0]),DES_ENCRYPT);
+               d=Time_F(STOP);
+               } while (d < 3.0);
+       ca=count;
+       cb=count*3;
+       cc=count*3*8/BUFSIZE+1;
+       cd=count*8/BUFSIZE+1;
+
+       ce=count/20+1;
+#define COND(d) (count != (d))
+#define COUNT(d) (d)
+#else
+#define COND(c) (run)
+#define COUNT(d) (count)
+        signal(SIGALRM,sig_done);
+        alarm(10);
+#endif
+
+#ifdef PART1
+       time_it(des_encrypt_u4_cisc_idx,  "des_encrypt_u4_cisc_idx  ", 0);
+       time_it(des_encrypt_u16_cisc_idx, "des_encrypt_u16_cisc_idx ", 1);
+       time_it(des_encrypt_u4_risc1_idx, "des_encrypt_u4_risc1_idx ", 2);
+       num+=3;
+#endif
+#ifdef PART2
+       time_it(des_encrypt_u16_risc1_idx,"des_encrypt_u16_risc1_idx", 3);
+       time_it(des_encrypt_u4_risc2_idx, "des_encrypt_u4_risc2_idx ", 4);
+       time_it(des_encrypt_u16_risc2_idx,"des_encrypt_u16_risc2_idx", 5);
+       num+=3;
+#endif
+#ifdef PART3
+       time_it(des_encrypt_u4_cisc_ptr,  "des_encrypt_u4_cisc_ptr  ", 6);
+       time_it(des_encrypt_u16_cisc_ptr, "des_encrypt_u16_cisc_ptr ", 7);
+       time_it(des_encrypt_u4_risc1_ptr, "des_encrypt_u4_risc1_ptr ", 8);
+       num+=3;
+#endif
+#ifdef PART4
+       time_it(des_encrypt_u16_risc1_ptr,"des_encrypt_u16_risc1_ptr", 9);
+       time_it(des_encrypt_u4_risc2_ptr, "des_encrypt_u4_risc2_ptr ",10);
+       time_it(des_encrypt_u16_risc2_ptr,"des_encrypt_u16_risc2_ptr",11);
+       num+=3;
+#endif
+
+#ifdef PART1
+       str[0]=" 4  c i";
+       print_it("des_encrypt_u4_cisc_idx  ",0);
+       max=tm[0];
+       max_idx=0;
+       str[1]="16  c i";
+       print_it("des_encrypt_u16_cisc_idx ",1);
+       if (max < tm[1]) { max=tm[1]; max_idx=1; }
+       str[2]=" 4 r1 i";
+       print_it("des_encrypt_u4_risc1_idx ",2);
+       if (max < tm[2]) { max=tm[2]; max_idx=2; }
+#endif
+#ifdef PART2
+       str[3]="16 r1 i";
+       print_it("des_encrypt_u16_risc1_idx",3);
+       if (max < tm[3]) { max=tm[3]; max_idx=3; }
+       str[4]=" 4 r2 i";
+       print_it("des_encrypt_u4_risc2_idx ",4);
+       if (max < tm[4]) { max=tm[4]; max_idx=4; }
+       str[5]="16 r2 i";
+       print_it("des_encrypt_u16_risc2_idx",5);
+       if (max < tm[5]) { max=tm[5]; max_idx=5; }
+#endif
+#ifdef PART3
+       str[6]=" 4  c p";
+       print_it("des_encrypt_u4_cisc_ptr  ",6);
+       if (max < tm[6]) { max=tm[6]; max_idx=6; }
+       str[7]="16  c p";
+       print_it("des_encrypt_u16_cisc_ptr ",7);
+       if (max < tm[7]) { max=tm[7]; max_idx=7; }
+       str[8]=" 4 r1 p";
+       print_it("des_encrypt_u4_risc1_ptr ",8);
+       if (max < tm[8]) { max=tm[8]; max_idx=8; }
+#endif
+#ifdef PART4
+       str[9]="16 r1 p";
+       print_it("des_encrypt_u16_risc1_ptr",9);
+       if (max < tm[9]) { max=tm[9]; max_idx=9; }
+       str[10]=" 4 r2 p";
+       print_it("des_encrypt_u4_risc2_ptr ",10);
+       if (max < tm[10]) { max=tm[10]; max_idx=10; }
+       str[11]="16 r2 p";
+       print_it("des_encrypt_u16_risc2_ptr",11);
+       if (max < tm[11]) { max=tm[11]; max_idx=11; }
+#endif
+       printf("options    des ecb/s\n");
+       printf("%s %12.2f 100.0%%\n",str[max_idx],tm[max_idx]);
+       d=tm[max_idx];
+       tm[max_idx]= -2.0;
+       max= -1.0;
+       for (;;)
+               {
+               for (i=0; i<12; i++)
+                       {
+                       if (max < tm[i]) { max=tm[i]; j=i; }
+                       }
+               if (max < 0.0) break;
+               printf("%s %12.2f  %4.1f%%\n",str[j],tm[j],tm[j]/d*100.0);
+               tm[j]= -2.0;
+               max= -1.0;
+               }
+
+       switch (max_idx)
+               {
+       case 0:
+               printf("-DDES_DEFAULT_OPTIONS\n");
+               break;
+       case 1:
+               printf("-DDES_UNROLL\n");
+               break;
+       case 2:
+               printf("-DDES_RISC1\n");
+               break;
+       case 3:
+               printf("-DDES_UNROLL -DDES_RISC1\n");
+               break;
+       case 4:
+               printf("-DDES_RISC2\n");
+               break;
+       case 5:
+               printf("-DDES_UNROLL -DDES_RISC2\n");
+               break;
+       case 6:
+               printf("-DDES_PTR\n");
+               break;
+       case 7:
+               printf("-DDES_UNROLL -DDES_PTR\n");
+               break;
+       case 8:
+               printf("-DDES_RISC1 -DDES_PTR\n");
+               break;
+       case 9:
+               printf("-DDES_UNROLL -DDES_RISC1 -DDES_PTR\n");
+               break;
+       case 10:
+               printf("-DDES_RISC2 -DDES_PTR\n");
+               break;
+       case 11:
+               printf("-DDES_UNROLL -DDES_RISC2 -DDES_PTR\n");
+               break;
+               }
+       exit(0);
+#if defined(LINT) || defined(MSDOS)
+       return(0);
+#endif
+       }
diff -druN linux-noipsec/net/ipsec/libdes/des_ver.h linux/net/ipsec/libdes/des_ver.h
--- linux-noipsec/net/ipsec/libdes/des_ver.h    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/des_ver.h    Thu Feb 18 17:41:13 1999
@@ -0,0 +1,60 @@
+/* crypto/des/des_ver.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+extern char *DES_version;      /* SSLeay version string */
+extern char *libdes_version;   /* old libdes version string */
diff -druN linux-noipsec/net/ipsec/libdes/destest.c linux/net/ipsec/libdes/destest.c
--- linux-noipsec/net/ipsec/libdes/destest.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/destest.c    Thu Feb 18 17:41:13 1999
@@ -0,0 +1,871 @@
+/* crypto/des/destest.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#if defined(WIN32) || defined(WIN16) || defined(WINDOWS)
+#ifndef MSDOS
+#define MSDOS
+#endif
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifndef MSDOS
+#include <unistd.h>
+#else
+#include <io.h>
+#endif
+#include <string.h>
+#include "des.h"
+
+/* tisk tisk - the test keys don't all have odd parity :-( */
+/* test data */
+#define NUM_TESTS 34
+static unsigned char key_data[NUM_TESTS][8]={
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},
+       {0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0xFE,0xDC,0xBA,0x98,0x76,0x54,0x32,0x10},
+       {0x7C,0xA1,0x10,0x45,0x4A,0x1A,0x6E,0x57},
+       {0x01,0x31,0xD9,0x61,0x9D,0xC1,0x37,0x6E},
+       {0x07,0xA1,0x13,0x3E,0x4A,0x0B,0x26,0x86},
+       {0x38,0x49,0x67,0x4C,0x26,0x02,0x31,0x9E},
+       {0x04,0xB9,0x15,0xBA,0x43,0xFE,0xB5,0xB6},
+       {0x01,0x13,0xB9,0x70,0xFD,0x34,0xF2,0xCE},
+       {0x01,0x70,0xF1,0x75,0x46,0x8F,0xB5,0xE6},
+       {0x43,0x29,0x7F,0xAD,0x38,0xE3,0x73,0xFE},
+       {0x07,0xA7,0x13,0x70,0x45,0xDA,0x2A,0x16},
+       {0x04,0x68,0x91,0x04,0xC2,0xFD,0x3B,0x2F},
+       {0x37,0xD0,0x6B,0xB5,0x16,0xCB,0x75,0x46},
+       {0x1F,0x08,0x26,0x0D,0x1A,0xC2,0x46,0x5E},
+       {0x58,0x40,0x23,0x64,0x1A,0xBA,0x61,0x76},
+       {0x02,0x58,0x16,0x16,0x46,0x29,0xB0,0x07},
+       {0x49,0x79,0x3E,0xBC,0x79,0xB3,0x25,0x8F},
+       {0x4F,0xB0,0x5E,0x15,0x15,0xAB,0x73,0xA7},
+       {0x49,0xE9,0x5D,0x6D,0x4C,0xA2,0x29,0xBF},
+       {0x01,0x83,0x10,0xDC,0x40,0x9B,0x26,0xD6},
+       {0x1C,0x58,0x7F,0x1C,0x13,0x92,0x4F,0xEF},
+       {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
+       {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
+       {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0xFE,0xDC,0xBA,0x98,0x76,0x54,0x32,0x10}};
+
+static unsigned char plain_data[NUM_TESTS][8]={
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},
+       {0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x01},
+       {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
+       {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0x01,0xA1,0xD6,0xD0,0x39,0x77,0x67,0x42},
+       {0x5C,0xD5,0x4C,0xA8,0x3D,0xEF,0x57,0xDA},
+       {0x02,0x48,0xD4,0x38,0x06,0xF6,0x71,0x72},
+       {0x51,0x45,0x4B,0x58,0x2D,0xDF,0x44,0x0A},
+       {0x42,0xFD,0x44,0x30,0x59,0x57,0x7F,0xA2},
+       {0x05,0x9B,0x5E,0x08,0x51,0xCF,0x14,0x3A},
+       {0x07,0x56,0xD8,0xE0,0x77,0x47,0x61,0xD2},
+       {0x76,0x25,0x14,0xB8,0x29,0xBF,0x48,0x6A},
+       {0x3B,0xDD,0x11,0x90,0x49,0x37,0x28,0x02},
+       {0x26,0x95,0x5F,0x68,0x35,0xAF,0x60,0x9A},
+       {0x16,0x4D,0x5E,0x40,0x4F,0x27,0x52,0x32},
+       {0x6B,0x05,0x6E,0x18,0x75,0x9F,0x5C,0xCA},
+       {0x00,0x4B,0xD6,0xEF,0x09,0x17,0x60,0x62},
+       {0x48,0x0D,0x39,0x00,0x6E,0xE7,0x62,0xF2},
+       {0x43,0x75,0x40,0xC8,0x69,0x8F,0x3C,0xFA},
+       {0x07,0x2D,0x43,0xA0,0x77,0x07,0x52,0x92},
+       {0x02,0xFE,0x55,0x77,0x81,0x17,0xF1,0x2A},
+       {0x1D,0x9D,0x5C,0x50,0x18,0xF7,0x28,0xC2},
+       {0x30,0x55,0x32,0x28,0x6D,0x6F,0x29,0x5A},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF},
+       {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
+       {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}};
+
+static unsigned char cipher_data[NUM_TESTS][8]={
+       {0x8C,0xA6,0x4D,0xE9,0xC1,0xB1,0x23,0xA7},
+       {0x73,0x59,0xB2,0x16,0x3E,0x4E,0xDC,0x58},
+       {0x95,0x8E,0x6E,0x62,0x7A,0x05,0x55,0x7B},
+       {0xF4,0x03,0x79,0xAB,0x9E,0x0E,0xC5,0x33},
+       {0x17,0x66,0x8D,0xFC,0x72,0x92,0x53,0x2D},
+       {0x8A,0x5A,0xE1,0xF8,0x1A,0xB8,0xF2,0xDD},
+       {0x8C,0xA6,0x4D,0xE9,0xC1,0xB1,0x23,0xA7},
+       {0xED,0x39,0xD9,0x50,0xFA,0x74,0xBC,0xC4},
+       {0x69,0x0F,0x5B,0x0D,0x9A,0x26,0x93,0x9B},
+       {0x7A,0x38,0x9D,0x10,0x35,0x4B,0xD2,0x71},
+       {0x86,0x8E,0xBB,0x51,0xCA,0xB4,0x59,0x9A},
+       {0x71,0x78,0x87,0x6E,0x01,0xF1,0x9B,0x2A},
+       {0xAF,0x37,0xFB,0x42,0x1F,0x8C,0x40,0x95},
+       {0x86,0xA5,0x60,0xF1,0x0E,0xC6,0xD8,0x5B},
+       {0x0C,0xD3,0xDA,0x02,0x00,0x21,0xDC,0x09},
+       {0xEA,0x67,0x6B,0x2C,0xB7,0xDB,0x2B,0x7A},
+       {0xDF,0xD6,0x4A,0x81,0x5C,0xAF,0x1A,0x0F},
+       {0x5C,0x51,0x3C,0x9C,0x48,0x86,0xC0,0x88},
+       {0x0A,0x2A,0xEE,0xAE,0x3F,0xF4,0xAB,0x77},
+       {0xEF,0x1B,0xF0,0x3E,0x5D,0xFA,0x57,0x5A},
+       {0x88,0xBF,0x0D,0xB6,0xD7,0x0D,0xEE,0x56},
+       {0xA1,0xF9,0x91,0x55,0x41,0x02,0x0B,0x56},
+       {0x6F,0xBF,0x1C,0xAF,0xCF,0xFD,0x05,0x56},
+       {0x2F,0x22,0xE4,0x9B,0xAB,0x7C,0xA1,0xAC},
+       {0x5A,0x6B,0x61,0x2C,0xC2,0x6C,0xCE,0x4A},
+       {0x5F,0x4C,0x03,0x8E,0xD1,0x2B,0x2E,0x41},
+       {0x63,0xFA,0xC0,0xD0,0x34,0xD9,0xF7,0x93},
+       {0x61,0x7B,0x3A,0x0C,0xE8,0xF0,0x71,0x00},
+       {0xDB,0x95,0x86,0x05,0xF8,0xC8,0xC6,0x06},
+       {0xED,0xBF,0xD1,0xC6,0x6C,0x29,0xCC,0xC7},
+       {0x35,0x55,0x50,0xB2,0x15,0x0E,0x24,0x51},
+       {0xCA,0xAA,0xAF,0x4D,0xEA,0xF1,0xDB,0xAE},
+       {0xD5,0xD4,0x4F,0xF7,0x20,0x68,0x3D,0x0D},
+       {0x2A,0x2B,0xB0,0x08,0xDF,0x97,0xC2,0xF2}};
+
+static unsigned char cipher_ecb2[NUM_TESTS-1][8]={
+       {0x92,0x95,0xB5,0x9B,0xB3,0x84,0x73,0x6E},
+       {0x19,0x9E,0x9D,0x6D,0xF3,0x9A,0xA8,0x16},
+       {0x2A,0x4B,0x4D,0x24,0x52,0x43,0x84,0x27},
+       {0x35,0x84,0x3C,0x01,0x9D,0x18,0xC5,0xB6},
+       {0x4A,0x5B,0x2F,0x42,0xAA,0x77,0x19,0x25},
+       {0xA0,0x6B,0xA9,0xB8,0xCA,0x5B,0x17,0x8A},
+       {0xAB,0x9D,0xB7,0xFB,0xED,0x95,0xF2,0x74},
+       {0x3D,0x25,0x6C,0x23,0xA7,0x25,0x2F,0xD6},
+       {0xB7,0x6F,0xAB,0x4F,0xBD,0xBD,0xB7,0x67},
+       {0x8F,0x68,0x27,0xD6,0x9C,0xF4,0x1A,0x10},
+       {0x82,0x57,0xA1,0xD6,0x50,0x5E,0x81,0x85},
+       {0xA2,0x0F,0x0A,0xCD,0x80,0x89,0x7D,0xFA},
+       {0xCD,0x2A,0x53,0x3A,0xDB,0x0D,0x7E,0xF3},
+       {0xD2,0xC2,0xBE,0x27,0xE8,0x1B,0x68,0xE3},
+       {0xE9,0x24,0xCF,0x4F,0x89,0x3C,0x5B,0x0A},
+       {0xA7,0x18,0xC3,0x9F,0xFA,0x9F,0xD7,0x69},
+       {0x77,0x2C,0x79,0xB1,0xD2,0x31,0x7E,0xB1},
+       {0x49,0xAB,0x92,0x7F,0xD0,0x22,0x00,0xB7},
+       {0xCE,0x1C,0x6C,0x7D,0x85,0xE3,0x4A,0x6F},
+       {0xBE,0x91,0xD6,0xE1,0x27,0xB2,0xE9,0x87},
+       {0x70,0x28,0xAE,0x8F,0xD1,0xF5,0x74,0x1A},
+       {0xAA,0x37,0x80,0xBB,0xF3,0x22,0x1D,0xDE},
+       {0xA6,0xC4,0xD2,0x5E,0x28,0x93,0xAC,0xB3},
+       {0x22,0x07,0x81,0x5A,0xE4,0xB7,0x1A,0xAD},
+       {0xDC,0xCE,0x05,0xE7,0x07,0xBD,0xF5,0x84},
+       {0x26,0x1D,0x39,0x2C,0xB3,0xBA,0xA5,0x85},
+       {0xB4,0xF7,0x0F,0x72,0xFB,0x04,0xF0,0xDC},
+       {0x95,0xBA,0xA9,0x4E,0x87,0x36,0xF2,0x89},
+       {0xD4,0x07,0x3A,0xF1,0x5A,0x17,0x82,0x0E},
+       {0xEF,0x6F,0xAF,0xA7,0x66,0x1A,0x7E,0x89},
+       {0xC1,0x97,0xF5,0x58,0x74,0x8A,0x20,0xE7},
+       {0x43,0x34,0xCF,0xDA,0x22,0xC4,0x86,0xC8},
+       {0x08,0xD7,0xB4,0xFB,0x62,0x9D,0x08,0x85}};
+
+static unsigned char cbc_key [8]={0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};
+static unsigned char cbc2_key[8]={0xf0,0xe1,0xd2,0xc3,0xb4,0xa5,0x96,0x87};
+static unsigned char cbc3_key[8]={0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10};
+static unsigned char cbc_iv  [8]={0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10};
+static char cbc_data[40]="7654321 Now is the time for \0001";
+
+static unsigned char cbc_ok[32]={
+       0xcc,0xd1,0x73,0xff,0xab,0x20,0x39,0xf4,
+       0xac,0xd8,0xae,0xfd,0xdf,0xd8,0xa1,0xeb,
+       0x46,0x8e,0x91,0x15,0x78,0x88,0xba,0x68,
+       0x1d,0x26,0x93,0x97,0xf7,0xfe,0x62,0xb4};
+
+static unsigned char xcbc_ok[32]={
+       0x86,0x74,0x81,0x0D,0x61,0xA4,0xA5,0x48,
+       0xB9,0x93,0x03,0xE1,0xB8,0xBB,0xBD,0xBD,
+       0x64,0x30,0x0B,0xB9,0x06,0x65,0x81,0x76,
+       0x04,0x1D,0x77,0x62,0x17,0xCA,0x2B,0xD2,
+       };
+
+static unsigned char cbc3_ok[32]={
+       0x3F,0xE3,0x01,0xC9,0x62,0xAC,0x01,0xD0,
+       0x22,0x13,0x76,0x3C,0x1C,0xBD,0x4C,0xDC,
+       0x79,0x96,0x57,0xC0,0x64,0xEC,0xF5,0xD4,
+       0x1C,0x67,0x38,0x12,0xCF,0xDE,0x96,0x75};
+
+static unsigned char pcbc_ok[32]={
+       0xcc,0xd1,0x73,0xff,0xab,0x20,0x39,0xf4,
+       0x6d,0xec,0xb4,0x70,0xa0,0xe5,0x6b,0x15,
+       0xae,0xa6,0xbf,0x61,0xed,0x7d,0x9c,0x9f,
+       0xf7,0x17,0x46,0x3b,0x8a,0xb3,0xcc,0x88};
+
+static unsigned char cfb_key[8]={0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};
+static unsigned char cfb_iv[8]={0x12,0x34,0x56,0x78,0x90,0xab,0xcd,0xef};
+static unsigned char cfb_buf1[40],cfb_buf2[40],cfb_tmp[8];
+static unsigned char plain[24]=
+       {
+       0x4e,0x6f,0x77,0x20,0x69,0x73,
+       0x20,0x74,0x68,0x65,0x20,0x74,
+       0x69,0x6d,0x65,0x20,0x66,0x6f,
+       0x72,0x20,0x61,0x6c,0x6c,0x20
+       };
+static unsigned char cfb_cipher8[24]= {
+       0xf3,0x1f,0xda,0x07,0x01,0x14, 0x62,0xee,0x18,0x7f,0x43,0xd8,
+       0x0a,0x7c,0xd9,0xb5,0xb0,0xd2, 0x90,0xda,0x6e,0x5b,0x9a,0x87 };
+static unsigned char cfb_cipher16[24]={
+       0xF3,0x09,0x87,0x87,0x7F,0x57, 0xF7,0x3C,0x36,0xB6,0xDB,0x70,
+       0xD8,0xD5,0x34,0x19,0xD3,0x86, 0xB2,0x23,0xB7,0xB2,0xAD,0x1B };
+static unsigned char cfb_cipher32[24]={
+       0xF3,0x09,0x62,0x49,0xA4,0xDF, 0xA4,0x9F,0x33,0xDC,0x7B,0xAD,
+       0x4C,0xC8,0x9F,0x64,0xE4,0x53, 0xE5,0xEC,0x67,0x20,0xDA,0xB6 };
+static unsigned char cfb_cipher48[24]={
+       0xF3,0x09,0x62,0x49,0xC7,0xF4, 0x30,0xB5,0x15,0xEC,0xBB,0x85,
+       0x97,0x5A,0x13,0x8C,0x68,0x60, 0xE2,0x38,0x34,0x3C,0xDC,0x1F };
+static unsigned char cfb_cipher64[24]={
+       0xF3,0x09,0x62,0x49,0xC7,0xF4, 0x6E,0x51,0xA6,0x9E,0x83,0x9B,
+       0x1A,0x92,0xF7,0x84,0x03,0x46, 0x71,0x33,0x89,0x8E,0xA6,0x22 };
+
+static unsigned char ofb_key[8]={0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};
+static unsigned char ofb_iv[8]={0x12,0x34,0x56,0x78,0x90,0xab,0xcd,0xef};
+static unsigned char ofb_buf1[24],ofb_buf2[24],ofb_tmp[8];
+static unsigned char ofb_cipher[24]=
+       {
+       0xf3,0x09,0x62,0x49,0xc7,0xf4,0x6e,0x51,
+       0x35,0xf2,0x4a,0x24,0x2e,0xeb,0x3d,0x3f,
+       0x3d,0x6d,0x5b,0xe3,0x25,0x5a,0xf8,0xc3
+       };
+
+DES_LONG cbc_cksum_ret=0xB462FEF7L;
+unsigned char cbc_cksum_data[8]={0x1D,0x26,0x93,0x97,0xf7,0xfe,0x62,0xb4};
+
+#ifndef NOPROTO
+static char *pt(unsigned char *p);
+static int cfb_test(int bits, unsigned char *cfb_cipher);
+static int cfb64_test(unsigned char *cfb_cipher);
+static int ede_cfb64_test(unsigned char *cfb_cipher);
+#else
+static char *pt();
+static int cfb_test();
+static int cfb64_test();
+static int ede_cfb64_test();
+#endif
+
+int main(argc,argv)
+int argc;
+char *argv[];
+       {
+       int i,j,err=0;
+       des_cblock in,out,outin,iv3;
+       des_key_schedule ks,ks2,ks3;
+       unsigned char cbc_in[40];
+       unsigned char cbc_out[40];
+       DES_LONG cs;
+       unsigned char qret[4][4],cret[8];
+       DES_LONG lqret[4];
+       int num;
+       char *str;
+
+       printf("Doing ecb\n");
+       for (i=0; i<NUM_TESTS; i++)
+               {
+               if ((j=des_key_sched((C_Block *)(key_data[i]),ks)) != 0)
+                       {
+                       printf("Key error %2d:%d\n",i+1,j);
+                       err=1;
+                       }
+               memcpy(in,plain_data[i],8);
+               memset(out,0,8);
+               memset(outin,0,8);
+               des_ecb_encrypt((C_Block *)in,(C_Block *)out,ks,DES_ENCRYPT);
+               des_ecb_encrypt((C_Block *)out,(C_Block *)outin,ks,DES_DECRYPT);
+
+               if (memcmp(out,cipher_data[i],8) != 0)
+                       {
+                       printf("Encryption error %2d\nk=%s p=%s o=%s act=%s\n",
+                               i+1,pt(key_data[i]),pt(in),pt(cipher_data[i]),
+                               pt(out));
+                       err=1;
+                       }
+               if (memcmp(in,outin,8) != 0)
+                       {
+                       printf("Decryption error %2d\nk=%s p=%s o=%s act=%s\n",
+                               i+1,pt(key_data[i]),pt(out),pt(in),pt(outin));
+                       err=1;
+                       }
+               }
+
+#ifndef LIBDES_LIT
+       printf("Doing ede ecb\n");
+       for (i=0; i<(NUM_TESTS-1); i++)
+               {
+               if ((j=des_key_sched((C_Block *)(key_data[i]),ks)) != 0)
+                       {
+                       err=1;
+                       printf("Key error %2d:%d\n",i+1,j);
+                       }
+               if ((j=des_key_sched((C_Block *)(key_data[i+1]),ks2)) != 0)
+                       {
+                       printf("Key error %2d:%d\n",i+2,j);
+                       err=1;
+                       }
+               if ((j=des_key_sched((C_Block *)(key_data[i+2]),ks3)) != 0)
+                       {
+                       printf("Key error %2d:%d\n",i+3,j);
+                       err=1;
+                       }
+               memcpy(in,plain_data[i],8);
+               memset(out,0,8);
+               memset(outin,0,8);
+               des_ecb2_encrypt((C_Block *)in,(C_Block *)out,ks,ks2,
+                       DES_ENCRYPT);
+               des_ecb2_encrypt((C_Block *)out,(C_Block *)outin,ks,ks2,
+                       DES_DECRYPT);
+
+               if (memcmp(out,cipher_ecb2[i],8) != 0)
+                       {
+                       printf("Encryption error %2d\nk=%s p=%s o=%s act=%s\n",
+                               i+1,pt(key_data[i]),pt(in),pt(cipher_ecb2[i]),
+                               pt(out));
+                       err=1;
+                       }
+               if (memcmp(in,outin,8) != 0)
+                       {
+                       printf("Decryption error %2d\nk=%s p=%s o=%s act=%s\n",
+                               i+1,pt(key_data[i]),pt(out),pt(in),pt(outin));
+                       err=1;
+                       }
+               }
+#endif
+
+       printf("Doing cbc\n");
+       if ((j=des_key_sched((C_Block *)cbc_key,ks)) != 0)
+               {
+               printf("Key error %d\n",j);
+               err=1;
+               }
+       memset(cbc_out,0,40);
+       memset(cbc_in,0,40);
+       memcpy(iv3,cbc_iv,sizeof(cbc_iv));
+       des_ncbc_encrypt((C_Block *)cbc_data,(C_Block *)cbc_out,
+               (long)strlen((char *)cbc_data)+1,ks,
+               (C_Block *)iv3,DES_ENCRYPT);
+       if (memcmp(cbc_out,cbc_ok,32) != 0)
+               printf("cbc_encrypt encrypt error\n");
+
+       memcpy(iv3,cbc_iv,sizeof(cbc_iv));
+       des_ncbc_encrypt((C_Block *)cbc_out,(C_Block *)cbc_in,
+               (long)strlen((char *)cbc_data)+1,ks,
+               (C_Block *)iv3,DES_DECRYPT);
+       if (memcmp(cbc_in,cbc_data,strlen((char *)cbc_data)) != 0)
+               {
+               printf("cbc_encrypt decrypt error\n");
+               err=1;
+               }
+
+#ifndef LIBDES_LIT
+       printf("Doing desx cbc\n");
+       if ((j=des_key_sched((C_Block *)cbc_key,ks)) != 0)
+               {
+               printf("Key error %d\n",j);
+               err=1;
+               }
+       memset(cbc_out,0,40);
+       memset(cbc_in,0,40);
+       memcpy(iv3,cbc_iv,sizeof(cbc_iv));
+       des_xcbc_encrypt((C_Block *)cbc_data,(C_Block *)cbc_out,
+               (long)strlen((char *)cbc_data)+1,ks,
+               (C_Block *)iv3,
+               (C_Block *)cbc2_key, (C_Block *)cbc3_key, DES_ENCRYPT);
+       if (memcmp(cbc_out,xcbc_ok,32) != 0)
+               {
+               printf("des_xcbc_encrypt encrypt error\n");
+               }
+       memcpy(iv3,cbc_iv,sizeof(cbc_iv));
+       des_xcbc_encrypt((C_Block *)cbc_out,(C_Block *)cbc_in,
+               (long)strlen((char *)cbc_data)+1,ks,
+               (C_Block *)iv3,
+               (C_Block *)cbc2_key, (C_Block *)cbc3_key, DES_DECRYPT);
+       if (memcmp(cbc_in,cbc_data,strlen((char *)cbc_data)+1) != 0)
+               {
+               printf("des_xcbc_encrypt decrypt error\n");
+               err=1;
+               }
+#endif
+
+       printf("Doing ede cbc\n");
+       if ((j=des_key_sched((C_Block *)cbc_key,ks)) != 0)
+               {
+               printf("Key error %d\n",j);
+               err=1;
+               }
+       if ((j=des_key_sched((C_Block *)cbc2_key,ks2)) != 0)
+               {
+               printf("Key error %d\n",j);
+               err=1;
+               }
+       if ((j=des_key_sched((C_Block *)cbc3_key,ks3)) != 0)
+               {
+               printf("Key error %d\n",j);
+               err=1;
+               }
+       memset(cbc_out,0,40);
+       memset(cbc_in,0,40);
+       i=strlen((char *)cbc_data)+1;
+       /* i=((i+7)/8)*8; */
+       memcpy(iv3,cbc_iv,sizeof(cbc_iv));
+
+       des_ede3_cbc_encrypt((C_Block *)cbc_data,(C_Block *)cbc_out,
+               16L,ks,ks2,ks3,(C_Block *)iv3,DES_ENCRYPT);
+       des_ede3_cbc_encrypt((C_Block *)&(cbc_data[16]),
+               (C_Block *)&(cbc_out[16]),
+               (long)i-16,ks,ks2,ks3,(C_Block *)iv3,DES_ENCRYPT);
+       if (memcmp(cbc_out,cbc3_ok,
+               (unsigned int)(strlen((char *)cbc_data)+1+7)/8*8) != 0)
+               {
+               printf("des_ede3_cbc_encrypt encrypt error\n");
+               err=1;
+               }
+
+       memcpy(iv3,cbc_iv,sizeof(cbc_iv));
+       des_ede3_cbc_encrypt((C_Block *)cbc_out,(C_Block *)cbc_in,
+               (long)i,ks,ks2,ks3,(C_Block *)iv3,DES_DECRYPT);
+       if (memcmp(cbc_in,cbc_data,strlen(cbc_data)+1) != 0)
+               {
+               printf("des_ede3_cbc_encrypt decrypt error\n");
+               err=1;
+               }
+
+#ifndef LIBDES_LIT
+       printf("Doing pcbc\n");
+       if ((j=des_key_sched((C_Block *)cbc_key,ks)) != 0)
+               {
+               printf("Key error %d\n",j);
+               err=1;
+               }
+       memset(cbc_out,0,40);
+       memset(cbc_in,0,40);
+       des_pcbc_encrypt((C_Block *)cbc_data,(C_Block *)cbc_out,
+               (long)strlen(cbc_data)+1,ks,(C_Block *)cbc_iv,DES_ENCRYPT);
+       if (memcmp(cbc_out,pcbc_ok,32) != 0)
+               {
+               printf("pcbc_encrypt encrypt error\n");
+               err=1;
+               }
+       des_pcbc_encrypt((C_Block *)cbc_out,(C_Block *)cbc_in,
+               (long)strlen(cbc_data)+1,ks,(C_Block *)cbc_iv,DES_DECRYPT);
+       if (memcmp(cbc_in,cbc_data,strlen(cbc_data)+1) != 0)
+               {
+               printf("pcbc_encrypt decrypt error\n");
+               err=1;
+               }
+
+       printf("Doing ");
+       printf("cfb8 ");
+       err+=cfb_test(8,cfb_cipher8);
+       printf("cfb16 ");
+       err+=cfb_test(16,cfb_cipher16);
+       printf("cfb32 ");
+       err+=cfb_test(32,cfb_cipher32);
+       printf("cfb48 ");
+       err+=cfb_test(48,cfb_cipher48);
+       printf("cfb64 ");
+       err+=cfb_test(64,cfb_cipher64);
+
+       printf("cfb64() ");
+       err+=cfb64_test(cfb_cipher64);
+
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       for (i=0; i<sizeof(plain); i++)
+               des_cfb_encrypt(&(plain[i]),&(cfb_buf1[i]),
+                       8,(long)1,ks,(C_Block *)cfb_tmp,DES_ENCRYPT);
+       if (memcmp(cfb_cipher8,cfb_buf1,sizeof(plain)) != 0)
+               {
+               printf("cfb_encrypt small encrypt error\n");
+               err=1;
+               }
+
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       for (i=0; i<sizeof(plain); i++)
+               des_cfb_encrypt(&(cfb_buf1[i]),&(cfb_buf2[i]),
+                       8,(long)1,ks,(C_Block *)cfb_tmp,DES_DECRYPT);
+       if (memcmp(plain,cfb_buf2,sizeof(plain)) != 0)
+               {
+               printf("cfb_encrypt small decrypt error\n");
+               err=1;
+               }
+
+       printf("ede_cfb64() ");
+       err+=ede_cfb64_test(cfb_cipher64);
+
+       printf("done\n");
+
+       printf("Doing ofb\n");
+       des_key_sched((C_Block *)ofb_key,ks);
+       memcpy(ofb_tmp,ofb_iv,sizeof(ofb_iv));
+       des_ofb_encrypt(plain,ofb_buf1,64,(long)sizeof(plain)/8,ks,
+               (C_Block *)ofb_tmp);
+       if (memcmp(ofb_cipher,ofb_buf1,sizeof(ofb_buf1)) != 0)
+               {
+               printf("ofb_encrypt encrypt error\n");
+printf("%02X %02X %02X %02X %02X %02X %02X %02X\n",
+ofb_buf1[8+0], ofb_buf1[8+1], ofb_buf1[8+2], ofb_buf1[8+3],
+ofb_buf1[8+4], ofb_buf1[8+5], ofb_buf1[8+6], ofb_buf1[8+7]);
+printf("%02X %02X %02X %02X %02X %02X %02X %02X\n",
+ofb_buf1[8+0], ofb_cipher[8+1], ofb_cipher[8+2], ofb_cipher[8+3],
+ofb_buf1[8+4], ofb_cipher[8+5], ofb_cipher[8+6], ofb_cipher[8+7]);
+               err=1;
+               }
+       memcpy(ofb_tmp,ofb_iv,sizeof(ofb_iv));
+       des_ofb_encrypt(ofb_buf1,ofb_buf2,64,(long)sizeof(ofb_buf1)/8,ks,
+               (C_Block *)ofb_tmp);
+       if (memcmp(plain,ofb_buf2,sizeof(ofb_buf2)) != 0)
+               {
+               printf("ofb_encrypt decrypt error\n");
+printf("%02X %02X %02X %02X %02X %02X %02X %02X\n",
+ofb_buf2[8+0], ofb_buf2[8+1], ofb_buf2[8+2], ofb_buf2[8+3],
+ofb_buf2[8+4], ofb_buf2[8+5], ofb_buf2[8+6], ofb_buf2[8+7]);
+printf("%02X %02X %02X %02X %02X %02X %02X %02X\n",
+plain[8+0], plain[8+1], plain[8+2], plain[8+3],
+plain[8+4], plain[8+5], plain[8+6], plain[8+7]);
+               err=1;
+               }
+
+       printf("Doing ofb64\n");
+       des_key_sched((C_Block *)ofb_key,ks);
+       memcpy(ofb_tmp,ofb_iv,sizeof(ofb_iv));
+       memset(ofb_buf1,0,sizeof(ofb_buf1));
+       memset(ofb_buf2,0,sizeof(ofb_buf1));
+       num=0;
+       for (i=0; i<sizeof(plain); i++)
+               {
+               des_ofb64_encrypt(&(plain[i]),&(ofb_buf1[i]),1,ks,
+                       (C_Block *)ofb_tmp,&num);
+               }
+       if (memcmp(ofb_cipher,ofb_buf1,sizeof(ofb_buf1)) != 0)
+               {
+               printf("ofb64_encrypt encrypt error\n");
+               err=1;
+               }
+       memcpy(ofb_tmp,ofb_iv,sizeof(ofb_iv));
+       num=0;
+       des_ofb64_encrypt(ofb_buf1,ofb_buf2,(long)sizeof(ofb_buf1),ks,
+               (C_Block *)ofb_tmp,&num);
+       if (memcmp(plain,ofb_buf2,sizeof(ofb_buf2)) != 0)
+               {
+               printf("ofb64_encrypt decrypt error\n");
+               err=1;
+               }
+
+       printf("Doing ede_ofb64\n");
+       des_key_sched((C_Block *)ofb_key,ks);
+       memcpy(ofb_tmp,ofb_iv,sizeof(ofb_iv));
+       memset(ofb_buf1,0,sizeof(ofb_buf1));
+       memset(ofb_buf2,0,sizeof(ofb_buf1));
+       num=0;
+       for (i=0; i<sizeof(plain); i++)
+               {
+               des_ede3_ofb64_encrypt(&(plain[i]),&(ofb_buf1[i]),1,ks,ks,ks,
+                       (C_Block *)ofb_tmp,&num);
+               }
+       if (memcmp(ofb_cipher,ofb_buf1,sizeof(ofb_buf1)) != 0)
+               {
+               printf("ede_ofb64_encrypt encrypt error\n");
+               err=1;
+               }
+       memcpy(ofb_tmp,ofb_iv,sizeof(ofb_iv));
+       num=0;
+       des_ede3_ofb64_encrypt(ofb_buf1,ofb_buf2,(long)sizeof(ofb_buf1),ks,
+               ks,ks,(C_Block *)ofb_tmp,&num);
+       if (memcmp(plain,ofb_buf2,sizeof(ofb_buf2)) != 0)
+               {
+               printf("ede_ofb64_encrypt decrypt error\n");
+               err=1;
+               }
+
+       printf("Doing cbc_cksum\n");
+       des_key_sched((C_Block *)cbc_key,ks);
+       cs=des_cbc_cksum((C_Block *)cbc_data,(C_Block *)cret,
+               (long)strlen(cbc_data),ks,(C_Block *)cbc_iv);
+       if (cs != cbc_cksum_ret)
+               {
+               printf("bad return value (%08lX), should be %08lX\n",
+                       (unsigned long)cs,(unsigned long)cbc_cksum_ret);
+               err=1;
+               }
+       if (memcmp(cret,cbc_cksum_data,8) != 0)
+               {
+               printf("bad cbc_cksum block returned\n");
+               err=1;
+               }
+
+       printf("Doing quad_cksum\n");
+       cs=quad_cksum((C_Block *)cbc_data,(C_Block *)qret,
+               (long)strlen(cbc_data),2,(C_Block *)cbc_iv);
+       for (i=0; i<4; i++)
+               {
+               lqret[i]=0;
+               memcpy(&(lqret[i]),&(qret[i][0]),4);
+               }
+       { /* Big-endian fix */
+       static DES_LONG l=1;
+       static unsigned char *c=(unsigned char *)&l;
+       DES_LONG ll;
+
+       if (!c[0])
+               {
+               ll=lqret[0]^lqret[3];
+               lqret[0]^=ll;
+               lqret[3]^=ll;
+               ll=lqret[1]^lqret[2];
+               lqret[1]^=ll;
+               lqret[2]^=ll;
+               }
+       }
+       if (cs != 0x70d7a63aL)
+               {
+               printf("quad_cksum error, ret %08lx should be 70d7a63a\n",
+                       (unsigned long)cs);
+               err=1;
+               }
+       if (lqret[0] != 0x327eba8dL)
+               {
+               printf("quad_cksum error, out[0] %08lx is not %08lx\n",
+                       (unsigned long)lqret[0],0x327eba8dL);
+               err=1;
+               }
+       if (lqret[1] != 0x201a49ccL)
+               {
+               printf("quad_cksum error, out[1] %08lx is not %08lx\n",
+                       (unsigned long)lqret[1],0x201a49ccL);
+               err=1;
+               }
+       if (lqret[2] != 0x70d7a63aL)
+               {
+               printf("quad_cksum error, out[2] %08lx is not %08lx\n",
+                       (unsigned long)lqret[2],0x70d7a63aL);
+               err=1;
+               }
+       if (lqret[3] != 0x501c2c26L)
+               {
+               printf("quad_cksum error, out[3] %08lx is not %08lx\n",
+                       (unsigned long)lqret[3],0x501c2c26L);
+               err=1;
+               }
+#endif
+
+       printf("input word alignment test");
+       for (i=0; i<4; i++)
+               {
+               printf(" %d",i);
+               des_ncbc_encrypt((C_Block *)&(cbc_out[i]),(C_Block *)cbc_in,
+                       (long)strlen(cbc_data)+1,ks,(C_Block *)cbc_iv,
+                       DES_ENCRYPT);
+               }
+       printf("\noutput word alignment test");
+       for (i=0; i<4; i++)
+               {
+               printf(" %d",i);
+               des_ncbc_encrypt((C_Block *)cbc_out,(C_Block *)&(cbc_in[i]),
+                       (long)strlen(cbc_data)+1,ks,(C_Block *)cbc_iv,
+                       DES_ENCRYPT);
+               }
+       printf("\n");
+       printf("fast crypt test ");
+       str=crypt("testing","ef");
+       if (strcmp("efGnQx2725bI2",str) != 0)
+               {
+               printf("fast crypt error, %s should be efGnQx2725bI2\n",str);
+               err=1;
+               }
+       str=crypt("bca76;23","yA");
+       if (strcmp("yA1Rp/1hZXIJk",str) != 0)
+               {
+               printf("fast crypt error, %s should be yA1Rp/1hZXIJk\n",str);
+               err=1;
+               }
+       printf("\n");
+       exit(err);
+       return(0);
+       }
+
+static char *pt(p)
+unsigned char *p;
+       {
+       static char bufs[10][20];
+       static int bnum=0;
+       char *ret;
+       int i;
+       static char *f="0123456789ABCDEF";
+
+       ret= &(bufs[bnum++][0]);
+       bnum%=10;
+       for (i=0; i<8; i++)
+               {
+               ret[i*2]=f[(p[i]>>4)&0xf];
+               ret[i*2+1]=f[p[i]&0xf];
+               }
+       ret[16]='\0';
+       return(ret);
+       }
+
+#ifndef LIBDES_LIT
+
+static int cfb_test(bits, cfb_cipher)
+int bits;
+unsigned char *cfb_cipher;
+       {
+       des_key_schedule ks;
+       int i,err=0;
+
+       des_key_sched((C_Block *)cfb_key,ks);
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       des_cfb_encrypt(plain,cfb_buf1,bits,(long)sizeof(plain),ks,
+               (C_Block *)cfb_tmp,DES_ENCRYPT);
+       if (memcmp(cfb_cipher,cfb_buf1,sizeof(plain)) != 0)
+               {
+               err=1;
+               printf("cfb_encrypt encrypt error\n");
+               for (i=0; i<24; i+=8)
+                       printf("%s\n",pt(&(cfb_buf1[i])));
+               }
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       des_cfb_encrypt(cfb_buf1,cfb_buf2,bits,(long)sizeof(plain),ks,
+               (C_Block *)cfb_tmp,DES_DECRYPT);
+       if (memcmp(plain,cfb_buf2,sizeof(plain)) != 0)
+               {
+               err=1;
+               printf("cfb_encrypt decrypt error\n");
+               for (i=0; i<24; i+=8)
+                       printf("%s\n",pt(&(cfb_buf1[i])));
+               }
+       return(err);
+       }
+
+static int cfb64_test(cfb_cipher)
+unsigned char *cfb_cipher;
+       {
+       des_key_schedule ks;
+       int err=0,i,n;
+
+       des_key_sched((C_Block *)cfb_key,ks);
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       n=0;
+       des_cfb64_encrypt(plain,cfb_buf1,(long)12,ks,
+               (C_Block *)cfb_tmp,&n,DES_ENCRYPT);
+       des_cfb64_encrypt(&(plain[12]),&(cfb_buf1[12]),
+               (long)sizeof(plain)-12,ks,
+               (C_Block *)cfb_tmp,&n,DES_ENCRYPT);
+       if (memcmp(cfb_cipher,cfb_buf1,sizeof(plain)) != 0)
+               {
+               err=1;
+               printf("cfb_encrypt encrypt error\n");
+               for (i=0; i<24; i+=8)
+                       printf("%s\n",pt(&(cfb_buf1[i])));
+               }
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       n=0;
+       des_cfb64_encrypt(cfb_buf1,cfb_buf2,(long)17,ks,
+               (C_Block *)cfb_tmp,&n,DES_DECRYPT);
+       des_cfb64_encrypt(&(cfb_buf1[17]),&(cfb_buf2[17]),
+               (long)sizeof(plain)-17,ks,
+               (C_Block *)cfb_tmp,&n,DES_DECRYPT);
+       if (memcmp(plain,cfb_buf2,sizeof(plain)) != 0)
+               {
+               err=1;
+               printf("cfb_encrypt decrypt error\n");
+               for (i=0; i<24; i+=8)
+                       printf("%s\n",pt(&(cfb_buf2[i])));
+               }
+       return(err);
+       }
+
+static int ede_cfb64_test(cfb_cipher)
+unsigned char *cfb_cipher;
+       {
+       des_key_schedule ks;
+       int err=0,i,n;
+
+       des_key_sched((C_Block *)cfb_key,ks);
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       n=0;
+       des_ede3_cfb64_encrypt(plain,cfb_buf1,(long)12,ks,ks,ks,
+               (C_Block *)cfb_tmp,&n,DES_ENCRYPT);
+       des_ede3_cfb64_encrypt(&(plain[12]),&(cfb_buf1[12]),
+               (long)sizeof(plain)-12,ks,ks,ks,
+               (C_Block *)cfb_tmp,&n,DES_ENCRYPT);
+       if (memcmp(cfb_cipher,cfb_buf1,sizeof(plain)) != 0)
+               {
+               err=1;
+               printf("ede_cfb_encrypt encrypt error\n");
+               for (i=0; i<24; i+=8)
+                       printf("%s\n",pt(&(cfb_buf1[i])));
+               }
+       memcpy(cfb_tmp,cfb_iv,sizeof(cfb_iv));
+       n=0;
+       des_ede3_cfb64_encrypt(cfb_buf1,cfb_buf2,(long)17,ks,ks,ks,
+               (C_Block *)cfb_tmp,&n,DES_DECRYPT);
+       des_ede3_cfb64_encrypt(&(cfb_buf1[17]),&(cfb_buf2[17]),
+               (long)sizeof(plain)-17,ks,ks,ks,
+               (C_Block *)cfb_tmp,&n,DES_DECRYPT);
+       if (memcmp(plain,cfb_buf2,sizeof(plain)) != 0)
+               {
+               err=1;
+               printf("ede_cfb_encrypt decrypt error\n");
+               for (i=0; i<24; i+=8)
+                       printf("%s\n",pt(&(cfb_buf2[i])));
+               }
+       return(err);
+       }
+
+#endif
+
diff -druN linux-noipsec/net/ipsec/libdes/ecb_enc.c linux/net/ipsec/libdes/ecb_enc.c
--- linux-noipsec/net/ipsec/libdes/ecb_enc.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/ecb_enc.c    Tue Apr  6 00:02:01 1999
@@ -0,0 +1,128 @@
+/* crypto/des/ecb_enc.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des_locl.h"
+#include "spr.h"
+
+char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay";
+char *DES_version="DES part of SSLeay 0.8.2b 08-Jan-1998";
+
+/* RCSID $Id$ */
+/* This function ifdef'ed out for FreeS/WAN project. */
+#ifdef notdef
+char *des_options()
+       {
+       static int init=1;
+       static char buf[32];
+
+       if (init)
+               {
+               char *ptr,*unroll,*risc,*size;
+
+               init=0;
+#ifdef DES_PTR
+               ptr="ptr";
+#else
+               ptr="idx";
+#endif
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+               risc="risc1";
+#endif
+#ifdef DES_RISC2
+               risc="risc2";
+#endif
+#else
+               risc="cisc";
+#endif
+#ifdef DES_UNROLL
+               unroll="16";
+#else
+               unroll="4";
+#endif
+               if (sizeof(DES_LONG) != sizeof(long))
+                       size="int";
+               else
+                       size="long";
+               sprintf(buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,size);
+               }
+       return(buf);
+       }
+#endif
+               
+
+void des_ecb_encrypt(input, output, ks, enc)
+des_cblock (*input);
+des_cblock (*output);
+des_key_schedule ks;
+int enc;
+       {
+       register DES_LONG l;
+       register unsigned char *in,*out;
+       DES_LONG ll[2];
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       c2l(in,l); ll[0]=l;
+       c2l(in,l); ll[1]=l;
+       des_encrypt(ll,ks,enc);
+       l=ll[0]; l2c(l,out);
+       l=ll[1]; l2c(l,out);
+       l=ll[0]=ll[1]=0;
+       }
+
diff -druN linux-noipsec/net/ipsec/libdes/fcrypt.c linux/net/ipsec/libdes/fcrypt.c
--- linux-noipsec/net/ipsec/libdes/fcrypt.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/fcrypt.c     Wed Oct  4 16:54:11 2000
@@ -0,0 +1,152 @@
+/* NOCW */
+
+/* This version of crypt has been developed from my MIT compatable
+ * DES library.
+ * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au
+ * Eric Young (eay@cryptsoft.com)
+ */
+
+/* Modification by Jens Kupferschmidt (Cu)
+ * I have included directive PARA for shared memory computers.
+ * I have included a directive LONGCRYPT to using this routine to cipher
+ * passwords with more then 8 bytes like HP-UX 10.x it used. The MAXPLEN
+ * definition is the maximum of lenght of password and can changed. I have
+ * defined 24.
+ */
+
+#include "des_locl.h"
+
+/* Added more values to handle illegal salt values the way normal
+ * crypt() implementations do.  The patch was sent by 
+ * Bjorn Gronvall <bg@sics.se>
+ */
+static unsigned const char con_salt[128]={
+0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,
+0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1,
+0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,
+0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,
+0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,
+0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x00,0x01,
+0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
+0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A,
+0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
+0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,
+0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,
+0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24,
+0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,
+0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,
+0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,
+0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,
+};
+
+static unsigned const char cov_2char[64]={
+0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
+0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
+0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
+0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
+0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
+0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
+0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
+0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
+};
+
+#ifndef NOPROTO
+void fcrypt_body(DES_LONG *out,des_key_schedule ks,
+       DES_LONG Eswap0, DES_LONG Eswap1);
+
+#ifdef PERL5
+char *des_crypt(const char *buf,const char *salt);
+#else
+char *crypt(const char *buf,const char *salt);
+#endif
+#else
+void fcrypt_body();
+#ifdef PERL5
+char *des_crypt();
+#else
+char *crypt();
+#endif
+#endif
+
+#ifdef PERL5
+char *des_crypt(buf,salt)
+#else
+char *crypt(buf,salt)
+#endif
+const char *buf;
+const char *salt;
+       {
+       static char buff[14];
+
+       return(des_fcrypt(buf,salt,buff));
+       }
+
+
+char *des_fcrypt(buf,salt,ret)
+const char *buf;
+const char *salt;
+char *ret;
+       {
+       unsigned int i,j,x,y;
+       DES_LONG Eswap0,Eswap1;
+       DES_LONG out[2],ll;
+       des_cblock key;
+       des_key_schedule ks;
+       unsigned char bb[9];
+       unsigned char *b=bb;
+       unsigned char c,u;
+
+       /* eay 25/08/92
+        * If you call crypt("pwd","*") as often happens when you
+        * have * as the pwd field in /etc/passwd, the function
+        * returns *\0XXXXXXXXX
+        * The \0 makes the string look like * so the pwd "*" would
+        * crypt to "*".  This was found when replacing the crypt in
+        * our shared libraries.  People found that the disbled
+        * accounts effectivly had no passwd :-(. */
+       x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
+       Eswap0=con_salt[x]<<2;
+       x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
+       Eswap1=con_salt[x]<<6;
+
+/* EAY
+r=strlen(buf);
+r=(r+7)/8;
+*/
+       for (i=0; i<8; i++)
+               {
+               c= *(buf++);
+               if (!c) break;
+               key[i]=(c<<1);
+               }
+       for (; i<8; i++)
+               key[i]=0;
+
+       des_set_key((des_cblock *)(key),ks);
+       fcrypt_body(&(out[0]),ks,Eswap0,Eswap1);
+
+       ll=out[0]; l2c(ll,b);
+       ll=out[1]; l2c(ll,b);
+       y=0;
+       u=0x80;
+       bb[8]=0;
+       for (i=2; i<13; i++)
+               {
+               c=0;
+               for (j=0; j<6; j++)
+                       {
+                       c<<=1;
+                       if (bb[y] & u) c|=1;
+                       u>>=1;
+                       if (!u)
+                               {
+                               y++;
+                               u=0x80;
+                               }
+                       }
+               ret[i]=cov_2char[c];
+               }
+       ret[13]='\0';
+       return(ret);
+       }
+
diff -druN linux-noipsec/net/ipsec/libdes/fcrypt_b.c linux/net/ipsec/libdes/fcrypt_b.c
--- linux-noipsec/net/ipsec/libdes/fcrypt_b.c   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/fcrypt_b.c   Thu Feb 18 17:41:14 1999
@@ -0,0 +1,148 @@
+/* crypto/des/fcrypt_b.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+
+/* This version of crypt has been developed from my MIT compatable
+ * DES library.
+ * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au
+ * Eric Young (eay@cryptsoft.com)
+ */
+
+#define DES_FCRYPT
+#include "des_locl.h"
+#undef DES_FCRYPT
+
+#undef PERM_OP
+#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
+       (b)^=(t),\
+       (a)^=((t)<<(n)))
+
+#undef HPERM_OP
+#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
+       (a)=(a)^(t)^(t>>(16-(n))))\
+
+void fcrypt_body(out, ks, Eswap0, Eswap1)
+DES_LONG *out;
+des_key_schedule ks;
+DES_LONG Eswap0;
+DES_LONG Eswap1;
+       {
+       register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+       register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+       register DES_LONG *s;
+       register int j;
+       register DES_LONG E0,E1;
+
+       l=0;
+       r=0;
+
+       s=(DES_LONG *)ks;
+       E0=Eswap0;
+       E1=Eswap1;
+
+       for (j=0; j<25; j++)
+               {
+#ifdef DES_UNROLL
+               register int i;
+
+               for (i=0; i<32; i+=8)
+                       {
+                       D_ENCRYPT(l,r,i+0); /*  1 */
+                       D_ENCRYPT(r,l,i+2); /*  2 */
+                       D_ENCRYPT(l,r,i+4); /*  1 */
+                       D_ENCRYPT(r,l,i+6); /*  2 */
+                       }
+#else
+               D_ENCRYPT(l,r, 0); /*  1 */
+               D_ENCRYPT(r,l, 2); /*  2 */
+               D_ENCRYPT(l,r, 4); /*  3 */
+               D_ENCRYPT(r,l, 6); /*  4 */
+               D_ENCRYPT(l,r, 8); /*  5 */
+               D_ENCRYPT(r,l,10); /*  6 */
+               D_ENCRYPT(l,r,12); /*  7 */
+               D_ENCRYPT(r,l,14); /*  8 */
+               D_ENCRYPT(l,r,16); /*  9 */
+               D_ENCRYPT(r,l,18); /*  10 */
+               D_ENCRYPT(l,r,20); /*  11 */
+               D_ENCRYPT(r,l,22); /*  12 */
+               D_ENCRYPT(l,r,24); /*  13 */
+               D_ENCRYPT(r,l,26); /*  14 */
+               D_ENCRYPT(l,r,28); /*  15 */
+               D_ENCRYPT(r,l,30); /*  16 */
+#endif
+
+               t=l;
+               l=r;
+               r=t;
+               }
+       l=ROTATE(l,3)&0xffffffffL;
+       r=ROTATE(r,3)&0xffffffffL;
+
+       PERM_OP(l,r,t, 1,0x55555555L);
+       PERM_OP(r,l,t, 8,0x00ff00ffL);
+       PERM_OP(l,r,t, 2,0x33333333L);
+       PERM_OP(r,l,t,16,0x0000ffffL);
+       PERM_OP(l,r,t, 4,0x0f0f0f0fL);
+
+       out[0]=r;
+       out[1]=l;
+       }
+
diff -druN linux-noipsec/net/ipsec/libdes/podd.h linux/net/ipsec/libdes/podd.h
--- linux-noipsec/net/ipsec/libdes/podd.h       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/podd.h       Thu Feb 18 17:41:15 1999
@@ -0,0 +1,75 @@
+/* crypto/des/podd.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+static const unsigned char odd_parity[256]={
+  1,  1,  2,  2,  4,  4,  7,  7,  8,  8, 11, 11, 13, 13, 14, 14,
+ 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
+ 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
+ 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
+ 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
+ 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
+ 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
+112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
+128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
+145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
+161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
+176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
+193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
+208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
+224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
+241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};
diff -druN linux-noipsec/net/ipsec/libdes/set_key.c linux/net/ipsec/libdes/set_key.c
--- linux-noipsec/net/ipsec/libdes/set_key.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/set_key.c    Thu Feb 18 17:41:15 1999
@@ -0,0 +1,246 @@
+/* crypto/des/set_key.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* set_key.c v 1.4 eay 24/9/91
+ * 1.4 Speed up by 400% :-)
+ * 1.3 added register declarations.
+ * 1.2 unrolled make_key_sched a bit more
+ * 1.1 added norm_expand_bits
+ * 1.0 First working version
+ */
+#include "des_locl.h"
+#include "podd.h"
+#include "sk.h"
+
+#ifndef NOPROTO
+static int check_parity(des_cblock (*key));
+#else
+static int check_parity();
+#endif
+
+int des_check_key=0;
+
+void des_set_odd_parity(key)
+des_cblock (*key);
+       {
+       int i;
+
+       for (i=0; i<DES_KEY_SZ; i++)
+               (*key)[i]=odd_parity[(*key)[i]];
+       }
+
+static int check_parity(key)
+des_cblock (*key);
+       {
+       int i;
+
+       for (i=0; i<DES_KEY_SZ; i++)
+               {
+               if ((*key)[i] != odd_parity[(*key)[i]])
+                       return(0);
+               }
+       return(1);
+       }
+
+/* Weak and semi week keys as take from
+ * %A D.W. Davies
+ * %A W.L. Price
+ * %T Security for Computer Networks
+ * %I John Wiley & Sons
+ * %D 1984
+ * Many thanks to smb@ulysses.att.com (Steven Bellovin) for the reference
+ * (and actual cblock values).
+ */
+#define NUM_WEAK_KEY   16
+static des_cblock weak_keys[NUM_WEAK_KEY]={
+       /* weak keys */
+       {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
+       {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
+       {0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F},
+       {0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0},
+       /* semi-weak keys */
+       {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
+       {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
+       {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
+       {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
+       {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
+       {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
+       {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
+       {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
+       {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
+       {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
+       {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
+       {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
+
+int des_is_weak_key(key)
+des_cblock (*key);
+       {
+       int i;
+
+       for (i=0; i<NUM_WEAK_KEY; i++)
+               /* Added == 0 to comparision, I obviously don't run
+                * this section very often :-(, thanks to
+                * engineering@MorningStar.Com for the fix
+                * eay 93/06/29
+                * Another problem, I was comparing only the first 4
+                * bytes, 97/03/18 */
+               if (memcmp(weak_keys[i],key,sizeof(des_cblock)) == 0) return(1);
+       return(0);
+       }
+
+/* NOW DEFINED IN des_local.h
+ * See ecb_encrypt.c for a pseudo description of these macros. 
+ * #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
+ *     (b)^=(t),\
+ *     (a)=((a)^((t)<<(n))))
+ */
+
+#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
+       (a)=(a)^(t)^(t>>(16-(n))))
+
+/* return 0 if key parity is odd (correct),
+ * return -1 if key parity error,
+ * return -2 if illegal weak key.
+ */
+int des_set_key(key, schedule)
+des_cblock (*key);
+des_key_schedule schedule;
+       {
+       static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
+       register DES_LONG c,d,t,s,t2;
+       register unsigned char *in;
+       register DES_LONG *k;
+       register int i;
+
+       if (des_check_key)
+               {
+               if (!check_parity(key))
+                       return(-1);
+
+               if (des_is_weak_key(key))
+                       return(-2);
+               }
+
+       k=(DES_LONG *)schedule;
+       in=(unsigned char *)key;
+
+       c2l(in,c);
+       c2l(in,d);
+
+       /* do PC1 in 60 simple operations */ 
+/*     PERM_OP(d,c,t,4,0x0f0f0f0fL);
+       HPERM_OP(c,t,-2, 0xcccc0000L);
+       HPERM_OP(c,t,-1, 0xaaaa0000L);
+       HPERM_OP(c,t, 8, 0x00ff0000L);
+       HPERM_OP(c,t,-1, 0xaaaa0000L);
+       HPERM_OP(d,t,-8, 0xff000000L);
+       HPERM_OP(d,t, 8, 0x00ff0000L);
+       HPERM_OP(d,t, 2, 0x33330000L);
+       d=((d&0x00aa00aaL)<<7L)|((d&0x55005500L)>>7L)|(d&0xaa55aa55L);
+       d=(d>>8)|((c&0xf0000000L)>>4);
+       c&=0x0fffffffL; */
+
+       /* I now do it in 47 simple operations :-)
+        * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
+        * for the inspiration. :-) */
+       PERM_OP (d,c,t,4,0x0f0f0f0fL);
+       HPERM_OP(c,t,-2,0xcccc0000L);
+       HPERM_OP(d,t,-2,0xcccc0000L);
+       PERM_OP (d,c,t,1,0x55555555L);
+       PERM_OP (c,d,t,8,0x00ff00ffL);
+       PERM_OP (d,c,t,1,0x55555555L);
+       d=      (((d&0x000000ffL)<<16L)| (d&0x0000ff00L)     |
+                ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
+       c&=0x0fffffffL;
+
+       for (i=0; i<ITERATIONS; i++)
+               {
+               if (shifts2[i])
+                       { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
+               else
+                       { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
+               c&=0x0fffffffL;
+               d&=0x0fffffffL;
+               /* could be a few less shifts but I am to lazy at this
+                * point in time to investigate */
+               s=      des_skb[0][ (c    )&0x3f                ]|
+                       des_skb[1][((c>> 6)&0x03)|((c>> 7L)&0x3c)]|
+                       des_skb[2][((c>>13)&0x0f)|((c>>14L)&0x30)]|
+                       des_skb[3][((c>>20)&0x01)|((c>>21L)&0x06) |
+                                                 ((c>>22L)&0x38)];
+               t=      des_skb[4][ (d    )&0x3f                ]|
+                       des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
+                       des_skb[6][ (d>>15L)&0x3f                ]|
+                       des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
+
+               /* table contained 0213 4657 */
+               t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
+               *(k++)=ROTATE(t2,30)&0xffffffffL;
+
+               t2=((s>>16L)|(t&0xffff0000L));
+               *(k++)=ROTATE(t2,26)&0xffffffffL;
+               }
+       return(0);
+       }
+
+int des_key_sched(key, schedule)
+des_cblock (*key);
+des_key_schedule schedule;
+       {
+       return(des_set_key(key,schedule));
+       }
diff -druN linux-noipsec/net/ipsec/libdes/sk.h linux/net/ipsec/libdes/sk.h
--- linux-noipsec/net/ipsec/libdes/sk.h Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/sk.h Thu Feb 18 17:41:16 1999
@@ -0,0 +1,204 @@
+/* crypto/des/sk.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+static const DES_LONG des_skb[8][64]={
+{
+/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+0x00000000L,0x00000010L,0x20000000L,0x20000010L,
+0x00010000L,0x00010010L,0x20010000L,0x20010010L,
+0x00000800L,0x00000810L,0x20000800L,0x20000810L,
+0x00010800L,0x00010810L,0x20010800L,0x20010810L,
+0x00000020L,0x00000030L,0x20000020L,0x20000030L,
+0x00010020L,0x00010030L,0x20010020L,0x20010030L,
+0x00000820L,0x00000830L,0x20000820L,0x20000830L,
+0x00010820L,0x00010830L,0x20010820L,0x20010830L,
+0x00080000L,0x00080010L,0x20080000L,0x20080010L,
+0x00090000L,0x00090010L,0x20090000L,0x20090010L,
+0x00080800L,0x00080810L,0x20080800L,0x20080810L,
+0x00090800L,0x00090810L,0x20090800L,0x20090810L,
+0x00080020L,0x00080030L,0x20080020L,0x20080030L,
+0x00090020L,0x00090030L,0x20090020L,0x20090030L,
+0x00080820L,0x00080830L,0x20080820L,0x20080830L,
+0x00090820L,0x00090830L,0x20090820L,0x20090830L,
+},{
+/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
+0x00000000L,0x02000000L,0x00002000L,0x02002000L,
+0x00200000L,0x02200000L,0x00202000L,0x02202000L,
+0x00000004L,0x02000004L,0x00002004L,0x02002004L,
+0x00200004L,0x02200004L,0x00202004L,0x02202004L,
+0x00000400L,0x02000400L,0x00002400L,0x02002400L,
+0x00200400L,0x02200400L,0x00202400L,0x02202400L,
+0x00000404L,0x02000404L,0x00002404L,0x02002404L,
+0x00200404L,0x02200404L,0x00202404L,0x02202404L,
+0x10000000L,0x12000000L,0x10002000L,0x12002000L,
+0x10200000L,0x12200000L,0x10202000L,0x12202000L,
+0x10000004L,0x12000004L,0x10002004L,0x12002004L,
+0x10200004L,0x12200004L,0x10202004L,0x12202004L,
+0x10000400L,0x12000400L,0x10002400L,0x12002400L,
+0x10200400L,0x12200400L,0x10202400L,0x12202400L,
+0x10000404L,0x12000404L,0x10002404L,0x12002404L,
+0x10200404L,0x12200404L,0x10202404L,0x12202404L,
+},{
+/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
+0x00000000L,0x00000001L,0x00040000L,0x00040001L,
+0x01000000L,0x01000001L,0x01040000L,0x01040001L,
+0x00000002L,0x00000003L,0x00040002L,0x00040003L,
+0x01000002L,0x01000003L,0x01040002L,0x01040003L,
+0x00000200L,0x00000201L,0x00040200L,0x00040201L,
+0x01000200L,0x01000201L,0x01040200L,0x01040201L,
+0x00000202L,0x00000203L,0x00040202L,0x00040203L,
+0x01000202L,0x01000203L,0x01040202L,0x01040203L,
+0x08000000L,0x08000001L,0x08040000L,0x08040001L,
+0x09000000L,0x09000001L,0x09040000L,0x09040001L,
+0x08000002L,0x08000003L,0x08040002L,0x08040003L,
+0x09000002L,0x09000003L,0x09040002L,0x09040003L,
+0x08000200L,0x08000201L,0x08040200L,0x08040201L,
+0x09000200L,0x09000201L,0x09040200L,0x09040201L,
+0x08000202L,0x08000203L,0x08040202L,0x08040203L,
+0x09000202L,0x09000203L,0x09040202L,0x09040203L,
+},{
+/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
+0x00000000L,0x00100000L,0x00000100L,0x00100100L,
+0x00000008L,0x00100008L,0x00000108L,0x00100108L,
+0x00001000L,0x00101000L,0x00001100L,0x00101100L,
+0x00001008L,0x00101008L,0x00001108L,0x00101108L,
+0x04000000L,0x04100000L,0x04000100L,0x04100100L,
+0x04000008L,0x04100008L,0x04000108L,0x04100108L,
+0x04001000L,0x04101000L,0x04001100L,0x04101100L,
+0x04001008L,0x04101008L,0x04001108L,0x04101108L,
+0x00020000L,0x00120000L,0x00020100L,0x00120100L,
+0x00020008L,0x00120008L,0x00020108L,0x00120108L,
+0x00021000L,0x00121000L,0x00021100L,0x00121100L,
+0x00021008L,0x00121008L,0x00021108L,0x00121108L,
+0x04020000L,0x04120000L,0x04020100L,0x04120100L,
+0x04020008L,0x04120008L,0x04020108L,0x04120108L,
+0x04021000L,0x04121000L,0x04021100L,0x04121100L,
+0x04021008L,0x04121008L,0x04021108L,0x04121108L,
+},{
+/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+0x00000000L,0x10000000L,0x00010000L,0x10010000L,
+0x00000004L,0x10000004L,0x00010004L,0x10010004L,
+0x20000000L,0x30000000L,0x20010000L,0x30010000L,
+0x20000004L,0x30000004L,0x20010004L,0x30010004L,
+0x00100000L,0x10100000L,0x00110000L,0x10110000L,
+0x00100004L,0x10100004L,0x00110004L,0x10110004L,
+0x20100000L,0x30100000L,0x20110000L,0x30110000L,
+0x20100004L,0x30100004L,0x20110004L,0x30110004L,
+0x00001000L,0x10001000L,0x00011000L,0x10011000L,
+0x00001004L,0x10001004L,0x00011004L,0x10011004L,
+0x20001000L,0x30001000L,0x20011000L,0x30011000L,
+0x20001004L,0x30001004L,0x20011004L,0x30011004L,
+0x00101000L,0x10101000L,0x00111000L,0x10111000L,
+0x00101004L,0x10101004L,0x00111004L,0x10111004L,
+0x20101000L,0x30101000L,0x20111000L,0x30111000L,
+0x20101004L,0x30101004L,0x20111004L,0x30111004L,
+},{
+/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
+0x00000000L,0x08000000L,0x00000008L,0x08000008L,
+0x00000400L,0x08000400L,0x00000408L,0x08000408L,
+0x00020000L,0x08020000L,0x00020008L,0x08020008L,
+0x00020400L,0x08020400L,0x00020408L,0x08020408L,
+0x00000001L,0x08000001L,0x00000009L,0x08000009L,
+0x00000401L,0x08000401L,0x00000409L,0x08000409L,
+0x00020001L,0x08020001L,0x00020009L,0x08020009L,
+0x00020401L,0x08020401L,0x00020409L,0x08020409L,
+0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
+0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
+0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
+0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
+0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
+0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
+0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
+0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
+},{
+/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
+0x00000000L,0x00000100L,0x00080000L,0x00080100L,
+0x01000000L,0x01000100L,0x01080000L,0x01080100L,
+0x00000010L,0x00000110L,0x00080010L,0x00080110L,
+0x01000010L,0x01000110L,0x01080010L,0x01080110L,
+0x00200000L,0x00200100L,0x00280000L,0x00280100L,
+0x01200000L,0x01200100L,0x01280000L,0x01280100L,
+0x00200010L,0x00200110L,0x00280010L,0x00280110L,
+0x01200010L,0x01200110L,0x01280010L,0x01280110L,
+0x00000200L,0x00000300L,0x00080200L,0x00080300L,
+0x01000200L,0x01000300L,0x01080200L,0x01080300L,
+0x00000210L,0x00000310L,0x00080210L,0x00080310L,
+0x01000210L,0x01000310L,0x01080210L,0x01080310L,
+0x00200200L,0x00200300L,0x00280200L,0x00280300L,
+0x01200200L,0x01200300L,0x01280200L,0x01280300L,
+0x00200210L,0x00200310L,0x00280210L,0x00280310L,
+0x01200210L,0x01200310L,0x01280210L,0x01280310L,
+},{
+/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
+0x00000000L,0x04000000L,0x00040000L,0x04040000L,
+0x00000002L,0x04000002L,0x00040002L,0x04040002L,
+0x00002000L,0x04002000L,0x00042000L,0x04042000L,
+0x00002002L,0x04002002L,0x00042002L,0x04042002L,
+0x00000020L,0x04000020L,0x00040020L,0x04040020L,
+0x00000022L,0x04000022L,0x00040022L,0x04040022L,
+0x00002020L,0x04002020L,0x00042020L,0x04042020L,
+0x00002022L,0x04002022L,0x00042022L,0x04042022L,
+0x00000800L,0x04000800L,0x00040800L,0x04040800L,
+0x00000802L,0x04000802L,0x00040802L,0x04040802L,
+0x00002800L,0x04002800L,0x00042800L,0x04042800L,
+0x00002802L,0x04002802L,0x00042802L,0x04042802L,
+0x00000820L,0x04000820L,0x00040820L,0x04040820L,
+0x00000822L,0x04000822L,0x00040822L,0x04040822L,
+0x00002820L,0x04002820L,0x00042820L,0x04042820L,
+0x00002822L,0x04002822L,0x00042822L,0x04042822L,
+}};
diff -druN linux-noipsec/net/ipsec/libdes/speed.c linux/net/ipsec/libdes/speed.c
--- linux-noipsec/net/ipsec/libdes/speed.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/speed.c      Thu Feb 18 17:41:16 1999
@@ -0,0 +1,329 @@
+/* crypto/des/speed.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* 11-Sep-92 Andrew Daviel   Support for Silicon Graphics IRIX added */
+/* 06-Apr-92 Luke Brennan    Support for VMS and add extra signal calls */
+
+#ifndef MSDOS
+#define TIMES
+#endif
+
+#include <stdio.h>
+#ifndef MSDOS
+#include <unistd.h>
+#else
+#include <io.h>
+extern int exit();
+#endif
+#include <signal.h>
+#ifndef VMS
+#ifndef _IRIX
+#include <time.h>
+#endif
+#ifdef TIMES
+#include <sys/types.h>
+#include <sys/times.h>
+#endif
+#else /* VMS */
+#include <types.h>
+struct tms {
+       time_t tms_utime;
+       time_t tms_stime;
+       time_t tms_uchild;      /* I dunno...  */
+       time_t tms_uchildsys;   /* so these names are a guess :-) */
+       }
+#endif
+#ifndef TIMES
+#include <sys/timeb.h>
+#endif
+
+#ifdef sun
+#include <limits.h>
+#include <sys/param.h>
+#endif
+
+#include "des.h"
+
+/* The following if from times(3) man page.  It may need to be changed */
+#ifndef HZ
+# ifndef CLK_TCK
+#  ifndef _BSD_CLK_TCK_ /* FreeBSD fix */
+#   ifndef VMS
+#    define HZ 100.0
+#   else /* VMS */
+#    define HZ 100.0
+#   endif
+#  else /* _BSD_CLK_TCK_ */
+#   define HZ ((double)_BSD_CLK_TCK_)
+#  endif
+# else /* CLK_TCK */
+#  define HZ ((double)CLK_TCK)
+# endif
+#endif
+
+#define BUFSIZE        ((long)1024)
+long run=0;
+
+#ifndef NOPROTO
+double Time_F(int s);
+#else
+double Time_F();
+#endif
+
+#ifdef SIGALRM
+#if defined(__STDC__) || defined(sgi) || defined(_AIX)
+#define SIGRETTYPE void
+#else
+#define SIGRETTYPE int
+#endif
+
+#ifndef NOPROTO
+SIGRETTYPE sig_done(int sig);
+#else
+SIGRETTYPE sig_done();
+#endif
+
+SIGRETTYPE sig_done(sig)
+int sig;
+       {
+       signal(SIGALRM,sig_done);
+       run=0;
+#ifdef LINT
+       sig=sig;
+#endif
+       }
+#endif
+
+#define START  0
+#define STOP   1
+
+double Time_F(s)
+int s;
+       {
+       double ret;
+#ifdef TIMES
+       static struct tms tstart,tend;
+
+       if (s == START)
+               {
+               times(&tstart);
+               return(0);
+               }
+       else
+               {
+               times(&tend);
+               ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
+               return((ret == 0.0)?1e-6:ret);
+               }
+#else /* !times() */
+       static struct timeb tstart,tend;
+       long i;
+
+       if (s == START)
+               {
+               ftime(&tstart);
+               return(0);
+               }
+       else
+               {
+               ftime(&tend);
+               i=(long)tend.millitm-(long)tstart.millitm;
+               ret=((double)(tend.time-tstart.time))+((double)i)/1e3;
+               return((ret == 0.0)?1e-6:ret);
+               }
+#endif
+       }
+
+int main(argc,argv)
+int argc;
+char **argv;
+       {
+       long count;
+       static unsigned char buf[BUFSIZE];
+       static des_cblock key ={0x12,0x34,0x56,0x78,0x9a,0xbc,0xde,0xf0};
+       static des_cblock key2={0x34,0x56,0x78,0x9a,0xbc,0xde,0xf0,0x12};
+       static des_cblock key3={0x56,0x78,0x9a,0xbc,0xde,0xf0,0x12,0x34};
+       des_key_schedule sch,sch2,sch3;
+       double a,b,c,d,e;
+#ifndef SIGALRM
+       long ca,cb,cc,cd,ce;
+#endif
+
+#ifndef TIMES
+       printf("To get the most acurate results, try to run this\n");
+       printf("program when this computer is idle.\n");
+#endif
+
+       des_set_key((C_Block *)key2,sch2);
+       des_set_key((C_Block *)key3,sch3);
+
+#ifndef SIGALRM
+       printf("First we calculate the approximate speed ...\n");
+       des_set_key((C_Block *)key,sch);
+       count=10;
+       do      {
+               long i;
+               DES_LONG data[2];
+
+               count*=2;
+               Time_F(START);
+               for (i=count; i; i--)
+                       des_encrypt(data,&(sch[0]),DES_ENCRYPT);
+               d=Time_F(STOP);
+               } while (d < 3.0);
+       ca=count;
+       cb=count*3;
+       cc=count*3*8/BUFSIZE+1;
+       cd=count*8/BUFSIZE+1;
+       ce=count/20+1;
+       printf("Doing set_key %ld times\n",ca);
+#define COND(d)        (count != (d))
+#define COUNT(d) (d)
+#else
+#define COND(c)        (run)
+#define COUNT(d) (count)
+       signal(SIGALRM,sig_done);
+       printf("Doing set_key for 10 seconds\n");
+       alarm(10);
+#endif
+
+       Time_F(START);
+       for (count=0,run=1; COND(ca); count++)
+               des_set_key((C_Block *)key,sch);
+       d=Time_F(STOP);
+       printf("%ld set_key's in %.2f seconds\n",count,d);
+       a=((double)COUNT(ca))/d;
+
+#ifdef SIGALRM
+       printf("Doing des_encrypt's for 10 seconds\n");
+       alarm(10);
+#else
+       printf("Doing des_encrypt %ld times\n",cb);
+#endif
+       Time_F(START);
+       for (count=0,run=1; COND(cb); count++)
+               {
+               DES_LONG data[2];
+
+               des_encrypt(data,&(sch[0]),DES_ENCRYPT);
+               }
+       d=Time_F(STOP);
+       printf("%ld des_encrypt's in %.2f second\n",count,d);
+       b=((double)COUNT(cb)*8)/d;
+
+#ifdef SIGALRM
+       printf("Doing des_cbc_encrypt on %ld byte blocks for 10 seconds\n",
+               BUFSIZE);
+       alarm(10);
+#else
+       printf("Doing des_cbc_encrypt %ld times on %ld byte blocks\n",cc,
+               BUFSIZE);
+#endif
+       Time_F(START);
+       for (count=0,run=1; COND(cc); count++)
+               des_ncbc_encrypt((C_Block *)buf,(C_Block *)buf,BUFSIZE,&(sch[0]),
+                       (C_Block *)&(key[0]),DES_ENCRYPT);
+       d=Time_F(STOP);
+       printf("%ld des_cbc_encrypt's of %ld byte blocks in %.2f second\n",
+               count,BUFSIZE,d);
+       c=((double)COUNT(cc)*BUFSIZE)/d;
+
+#ifdef SIGALRM
+       printf("Doing des_ede_cbc_encrypt on %ld byte blocks for 10 seconds\n",
+               BUFSIZE);
+       alarm(10);
+#else
+       printf("Doing des_ede_cbc_encrypt %ld times on %ld byte blocks\n",cd,
+               BUFSIZE);
+#endif
+       Time_F(START);
+       for (count=0,run=1; COND(cd); count++)
+               des_ede3_cbc_encrypt((C_Block *)buf,(C_Block *)buf,BUFSIZE,
+                       &(sch[0]),
+                       &(sch2[0]),
+                       &(sch3[0]),
+                       (C_Block *)&(key[0]),
+                       DES_ENCRYPT);
+       d=Time_F(STOP);
+       printf("%ld des_ede_cbc_encrypt's of %ld byte blocks in %.2f second\n",
+               count,BUFSIZE,d);
+       d=((double)COUNT(cd)*BUFSIZE)/d;
+
+#ifdef SIGALRM
+       printf("Doing crypt for 10 seconds\n");
+       alarm(10);
+#else
+       printf("Doing crypt %ld times\n",ce);
+#endif
+       Time_F(START);
+       for (count=0,run=1; COND(ce); count++)
+               crypt("testing1","ef");
+       e=Time_F(STOP);
+       printf("%ld crypts in %.2f second\n",count,e);
+       e=((double)COUNT(ce))/e;
+
+       printf("set_key            per sec = %12.2f (%9.3fuS)\n",a,1.0e6/a);
+       printf("DES raw ecb bytes  per sec = %12.2f (%9.3fuS)\n",b,8.0e6/b);
+       printf("DES cbc bytes      per sec = %12.2f (%9.3fuS)\n",c,8.0e6/c);
+       printf("DES ede cbc bytes  per sec = %12.2f (%9.3fuS)\n",d,8.0e6/d);
+       printf("crypt              per sec = %12.2f (%9.3fuS)\n",e,1.0e6/e);
+       exit(0);
+#if defined(LINT) || defined(MSDOS)
+       return(0);
+#endif
+       }
diff -druN linux-noipsec/net/ipsec/libdes/spr.h linux/net/ipsec/libdes/spr.h
--- linux-noipsec/net/ipsec/libdes/spr.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libdes/spr.h        Thu Feb 18 17:41:16 1999
@@ -0,0 +1,204 @@
+/* crypto/des/spr.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+const DES_LONG des_SPtrans[8][64]={
+{
+/* nibble 0 */
+0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L,
+0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L,
+0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L,
+0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L,
+0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
+0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L,
+0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L,
+0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L,
+0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L,
+0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
+0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L,
+0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L,
+0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L,
+0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L,
+0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
+0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L,
+},{
+/* nibble 1 */
+0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L,
+0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L,
+0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L,
+0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L,
+0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
+0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L,
+0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L,
+0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L,
+0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L,
+0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
+0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L,
+0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L,
+0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L,
+0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L,
+0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
+0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L,
+},{
+/* nibble 2 */
+0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L,
+0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L,
+0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L,
+0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L,
+0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
+0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L,
+0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L,
+0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L,
+0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L,
+0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
+0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L,
+0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L,
+0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L,
+0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L,
+0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
+0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L,
+},{
+/* nibble 3 */
+0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L,
+0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L,
+0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L,
+0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L,
+0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
+0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L,
+0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L,
+0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L,
+0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L,
+0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
+0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L,
+0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L,
+0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L,
+0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L,
+0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
+0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L,
+},{
+/* nibble 4 */
+0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L,
+0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L,
+0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L,
+0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L,
+0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
+0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L,
+0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L,
+0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L,
+0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L,
+0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
+0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L,
+0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L,
+0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L,
+0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L,
+0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
+0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L,
+},{
+/* nibble 5 */
+0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L,
+0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L,
+0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L,
+0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L,
+0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
+0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L,
+0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L,
+0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L,
+0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L,
+0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
+0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L,
+0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L,
+0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L,
+0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L,
+0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
+0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L,
+},{
+/* nibble 6 */
+0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L,
+0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L,
+0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L,
+0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L,
+0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
+0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L,
+0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L,
+0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L,
+0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L,
+0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
+0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L,
+0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L,
+0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L,
+0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L,
+0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
+0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L,
+},{
+/* nibble 7 */
+0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L,
+0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L,
+0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L,
+0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L,
+0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
+0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L,
+0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L,
+0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L,
+0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L,
+0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
+0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L,
+0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L,
+0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L,
+0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L,
+0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
+0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L,
+}};
diff -druN linux-noipsec/net/ipsec/libfreeswan/Makefile linux/net/ipsec/libfreeswan/Makefile
--- linux-noipsec/net/ipsec/libfreeswan/Makefile        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/Makefile        Fri Sep  8 21:12:57 2000
@@ -0,0 +1,53 @@
+# FreeS/WAN library
+# Copyright (C) 1998, 1999, 2000  Henry Spencer.
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id$
+
+ifndef TOPDIR
+TOPDIR  := /usr/src/linux
+endif
+
+L_TARGET := libkernel.a
+
+L_OBJS := ultoa.o addrtoa.o subnettoa.o subnetof.o goodmask.o datatot.o \
+       rangetoa.o satoa.o pfkey_v2_parse.o pfkey_v2_build.o pfkey_v2_ext_bits.o
+
+HDRS=freeswan.h internal.h
+
+override CFLAGS += -I.
+
+ifeq ($(CONFIG_IPSEC_DEBUG),y)
+override CFLAGS += -g
+endif
+
+override CFLAGS += -Wall 
+#override CFLAGS += -Wconversion 
+#override CFLAGS += -Wmissing-prototypes 
+override CFLAGS += -Wpointer-arith 
+#override CFLAGS += -Wcast-qual 
+#override CFLAGS += -Wmissing-declarations 
+override CFLAGS += -Wstrict-prototypes
+#override CFLAGS += -pedantic
+#override CFLAGS += -O3
+#override CFLAGS += -W
+#override CFLAGS += -Wwrite-strings 
+override CFLAGS += -Wbad-function-cast 
+
+include $(TOPDIR)/Rules.make
+
+$(L_OBJS):     $(HDRS)
+
+clean:
+       rm -f $(L_TARGET) *.o try* core *.core
+       ( cd des && $(MAKE) clean )
+
diff -druN linux-noipsec/net/ipsec/libfreeswan/addrtoa.c linux/net/ipsec/libfreeswan/addrtoa.c
--- linux-noipsec/net/ipsec/libfreeswan/addrtoa.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/addrtoa.c       Sun Apr 11 01:19:36 1999
@@ -0,0 +1,68 @@
+/*
+ * addresses to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+#define        NBYTES  4               /* bytes in an address */
+#define        PERBYTE 4               /* three digits plus a dot or NUL */
+#define        BUFLEN  (NBYTES*PERBYTE)
+
+#if BUFLEN != ADDRTOA_BUF
+#error "ADDRTOA_BUF in freeswan.h inconsistent with addrtoa() code"
+#endif
+
+/*
+ - addrtoa - convert binary address to ASCII dotted decimal
+ */
+size_t                         /* space needed for full conversion */
+addrtoa(addr, format, dst, dstlen)
+struct in_addr addr;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       unsigned long a = ntohl(addr.s_addr);
+       int i;
+       size_t n;
+       unsigned long byte;
+       char buf[BUFLEN];
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       p = buf;
+       for (i = NBYTES-1; i >= 0; i--) {
+               byte = (a >> (i*8)) & 0xff;
+               p += ultoa(byte, 10, p, PERBYTE);
+               if (i != 0)
+                       *(p-1) = '.';
+       }
+       n = p - buf;
+
+       if (dstlen > 0) {
+               if (n > dstlen)
+                       buf[dstlen - 1] = '\0';
+               strcpy(dst, buf);
+       }
+       return n;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/addrtot.c linux/net/ipsec/libfreeswan/addrtot.c
--- linux-noipsec/net/ipsec/libfreeswan/addrtot.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/addrtot.c       Tue Sep 12 06:56:39 2000
@@ -0,0 +1,230 @@
+/*
+ * addresses to text
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+#define        IP4BYTES        4       /* bytes in an IPv4 address */
+#define        PERBYTE         4       /* three digits plus a dot or NUL */
+#define        IP6BYTES        16      /* bytes in an IPv6 address */
+
+/* forwards */
+static size_t normal4(const unsigned char *s, size_t len, char *b, char **dp);
+static size_t normal6(const unsigned char *s, size_t len, char *b, char **dp);
+static size_t reverse4(const unsigned char *s, size_t len, char *b, char **dp);
+static size_t reverse6(const unsigned char *s, size_t len, char *b, char **dp);
+static size_t reverse62(const unsigned char *s, size_t len, char *b, char **dp);
+
+/*
+ - addrtot - convert binary address to text (dotted decimal or IPv6 string)
+ */
+size_t                         /* space needed for full conversion */
+addrtot(src, format, dst, dstlen)
+const ip_address *src;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       const unsigned char *b;
+       size_t n;
+       char buf[1+ADDRTOT_BUF+1];      /* :address: */
+       char *p;
+       int t = addrtypeof(src);
+#      define  TF(t, f)        (((t)<<8) | (f))
+
+       n = addrbytesptr(src, &b);
+       if (n == 0)
+               return 0;
+
+       switch (TF(t, format)) {
+       case TF(AF_INET, 0):
+               n = normal4(b, n, buf, &p);
+               break;
+       case TF(AF_INET6, 0):
+               n = normal6(b, n, buf, &p);
+               break;
+       case TF(AF_INET, 'r'):
+               n = reverse4(b, n, buf, &p);
+               break;
+       case TF(AF_INET6, 'r'):
+               n = reverse6(b, n, buf, &p);
+               break;
+       case TF(AF_INET6, 'R'):
+               n = reverse62(b, n, buf, &p);
+               break;
+       default:                /* including (AF_INET, 'R') */
+               return 0;
+               break;
+       }
+
+       if (dstlen > 0) {
+               if (dstlen < n)
+                       p[dstlen - 1] = '\0';
+               strcpy(dst, p);
+       }
+       return n;
+}
+
+/*
+ - normal4 - normal IPv4 address-text conversion
+ */
+static size_t                  /* size of text, including NUL */
+normal4(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       char *p;
+
+       if (srclen != IP4BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       for (i = 0; i < IP4BYTES; i++) {
+               p += ultot(srcp[i], 10, p, PERBYTE);
+               if (i != IP4BYTES - 1)
+                       *(p-1) = '.';   /* overwrites the NUL */
+       }
+       *dstp = buf;
+       return p - buf;
+}
+
+/*
+ - normal6 - normal IPv6 address-text conversion
+ */
+static size_t                  /* size of text, including NUL */
+normal6(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough, plus 2 */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       unsigned long piece;
+       char *p;
+       char *q;
+
+       if (srclen != IP6BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       *p++ = ':';
+       for (i = 0; i < IP6BYTES/2; i++) {
+               piece = (srcp[2*i] << 8) + srcp[2*i + 1];
+               p += ultot(piece, 16, p, 5);    /* 5 = abcd + NUL */
+               *(p-1) = ':';   /* overwrites the NUL */
+       }
+       *p = '\0';
+       q = strstr(buf, ":0:0:");
+       if (q != NULL) {        /* zero squishing is possible */
+               p = q + 1;
+               while (*p == '0' && *(p+1) == ':')
+                       p += 2;
+               q++;
+               *q++ = ':';     /* overwrite first 0 */
+               while (*p != '\0')
+                       *q++ = *p++;
+               *q = '\0';
+               if (!(*(q-1) == ':' && *(q-2) == ':'))
+                       *--q = '\0';    /* strip final : unless :: */
+               p = buf;
+               if (!(*p == ':' && *(p+1) == ':'))
+                       p++;    /* skip initial : unless :: */
+       } else {
+               q = p;
+               *--q = '\0';    /* strip final : */
+               p = buf + 1;    /* skip initial : */
+       }
+       *dstp = p;
+       return q - p + 1;
+}
+
+/*
+ - reverse4 - IPv4 reverse-lookup conversion
+ */
+static size_t                  /* size of text, including NUL */
+reverse4(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       char *p;
+
+       if (srclen != IP4BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       for (i = IP4BYTES-1; i >= 0; i--) {
+               p += ultot(srcp[i], 10, p, PERBYTE);
+               *(p-1) = '.';   /* overwrites the NUL */
+       }
+       strcpy(p, "IN-ADDR.ARPA.");
+       *dstp = buf;
+       return strlen(buf) + 1;
+}
+
+/*
+ - reverse62 - obsolete IPv6 reverse-lookup conversion (RFC 1886)
+ * A trifle inefficient, really shouldn't use ultot...
+ */
+static size_t                  /* size of text, including NUL */
+reverse62(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       unsigned long piece;
+       char *p;
+
+       if (srclen != IP6BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       for (i = IP6BYTES-1; i >= 0; i--) {
+               piece = srcp[i];
+               p += ultot(piece&0xf, 16, p, 2);
+               *(p-1) = '.';
+               p += ultot(piece>>4, 16, p, 2);
+               *(p-1) = '.';
+       }
+       strcpy(p, "IP6.INT.");
+       *dstp = buf;
+       return strlen(buf) + 1;
+}
+
+/*
+ - reverse6 - modern IPv6 reverse-lookup conversion (RFC 2874)
+ */
+static size_t                  /* size of text, including NUL */
+reverse6(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       char *p;
+
+       if (srclen != IP6BYTES) /* "can't happen" */
+               return 0;
+       strcpy(buf, "\\[x");
+       p = buf + strlen(buf);
+       (void) datatot((const char *)srcp, srclen, 16, p, IP6BYTES*2 + 1);
+       strcat(buf, "].IP6.ARPA.");     /* leave count implicit */
+       *dstp = buf;
+       return strlen(buf) + 1;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/addrtypeof.c linux/net/ipsec/libfreeswan/addrtypeof.c
--- linux-noipsec/net/ipsec/libfreeswan/addrtypeof.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/addrtypeof.c    Fri Sep  8 20:03:44 2000
@@ -0,0 +1,94 @@
+/*
+ * extract parts of an ip_address
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - addrtypeof - get the type of an ip_address
+ */
+int
+addrtypeof(src)
+const ip_address *src;
+{
+       return src->u.v4.sin_family;
+}
+
+/*
+ - addrbytesptr - get pointer to the address bytes of an ip_address
+ */
+size_t                         /* 0 for error */
+addrbytesptr(src, dstp)
+const ip_address *src;
+const unsigned char **dstp;    /* NULL means just a size query */
+{
+       const unsigned char *p;
+       size_t n;
+
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               p = (const unsigned char *)&src->u.v4.sin_addr.s_addr;
+               n = 4;
+               break;
+       case AF_INET6:
+               p = (const unsigned char *)&src->u.v6.sin6_addr;
+               n = 16;
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       if (dstp != NULL)
+               *dstp = p;
+       return n;
+}
+
+/*
+ - addrlenof - get length of the address bytes of an ip_address
+ */
+size_t                         /* 0 for error */
+addrlenof(src)
+const ip_address *src;
+{
+       return addrbytesptr(src, NULL);
+}
+
+/*
+ - addrbytesof - get the address bytes of an ip_address
+ */
+size_t                         /* 0 for error */
+addrbytesof(src, dst, dstlen)
+const ip_address *src;
+unsigned char *dst;
+size_t dstlen;
+{
+       const unsigned char *p;
+       size_t n;
+       size_t ncopy;
+
+       n = addrbytesptr(src, &p);
+       if (n == 0)
+               return 0;
+
+       if (dstlen > 0) {
+               ncopy = n;
+               if (ncopy > dstlen)
+                       ncopy = dstlen;
+               memcpy(dst, p, ncopy);
+       }
+       return n;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/anyaddr.c linux/net/ipsec/libfreeswan/anyaddr.c
--- linux-noipsec/net/ipsec/libfreeswan/anyaddr.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/anyaddr.c       Tue Sep 19 09:09:32 2000
@@ -0,0 +1,146 @@
+/*
+ * special addresses
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/* these are mostly fallbacks for the no-IPv6-support-in-library case */
+#ifndef IN6ADDR_ANY_INIT
+#define        IN6ADDR_ANY_INIT        {{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}
+#endif
+#ifndef IN6ADDR_LOOPBACK_INIT
+#define        IN6ADDR_LOOPBACK_INIT   {{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}
+#endif
+
+static struct in6_addr v6any = IN6ADDR_ANY_INIT;
+static struct in6_addr v6loop = IN6ADDR_LOOPBACK_INIT;
+
+/*
+ - anyaddr - initialize to the any-address value
+ */
+err_t                          /* NULL for success, else string literal */
+anyaddr(af, dst)
+int af;                                /* address family */
+ip_address *dst;
+{
+       uint32_t v4any = htonl(INADDR_ANY);
+
+       switch (af) {
+       case AF_INET:
+               return initaddr((unsigned char *)&v4any, sizeof(v4any), af, dst);
+               break;
+       case AF_INET6:
+               return initaddr((unsigned char *)&v6any, sizeof(v6any), af, dst);
+               break;
+       default:
+               return "unknown address family in anyaddr/unspecaddr";
+               break;
+       }
+}
+
+/*
+ - unspecaddr - initialize to the unspecified-address value
+ */
+err_t                          /* NULL for success, else string literal */
+unspecaddr(af, dst)
+int af;                                /* address family */
+ip_address *dst;
+{
+       return anyaddr(af, dst);
+}
+
+/*
+ - loopbackaddr - initialize to the loopback-address value
+ */
+err_t                          /* NULL for success, else string literal */
+loopbackaddr(af, dst)
+int af;                                /* address family */
+ip_address *dst;
+{
+       uint32_t v4loop = htonl(INADDR_LOOPBACK);
+
+       switch (af) {
+       case AF_INET:
+               return initaddr((unsigned char *)&v4loop, sizeof(v4loop), af, dst);
+               break;
+       case AF_INET6:
+               return initaddr((unsigned char *)&v6loop, sizeof(v6loop), af, dst);
+               break;
+       default:
+               return "unknown address family in loopbackaddr";
+               break;
+       }
+}
+
+/*
+ - isanyaddr - test for the any-address value
+ */
+int
+isanyaddr(src)
+const ip_address *src;
+{
+       uint32_t v4any = htonl(INADDR_ANY);
+       int cmp;
+
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4any, sizeof(v4any));
+               break;
+       case AF_INET6:
+               cmp = memcmp(&src->u.v6.sin6_addr, &v6any, sizeof(v6any));
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       return (cmp == 0) ? 1 : 0;
+}
+
+/*
+ - isunspecaddr - test for the unspecified-address value
+ */
+int
+isunspecaddr(src)
+const ip_address *src;
+{
+       return isanyaddr(src);
+}
+
+/*
+ - isloopbackaddr - test for the loopback-address value
+ */
+int
+isloopbackaddr(src)
+const ip_address *src;
+{
+       uint32_t v4loop = htonl(INADDR_LOOPBACK);
+       int cmp;
+
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4loop, sizeof(v4loop));
+               break;
+       case AF_INET6:
+               cmp = memcmp(&src->u.v6.sin6_addr, &v6loop, sizeof(v6loop));
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       return (cmp == 0) ? 1 : 0;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/atoaddr.c linux/net/ipsec/libfreeswan/atoaddr.c
--- linux-noipsec/net/ipsec/libfreeswan/atoaddr.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/atoaddr.c       Sat Jan 22 03:17:22 2000
@@ -0,0 +1,238 @@
+/*
+ * conversion from ASCII forms of addresses to internal ones
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ * Define NOLEADINGZEROS to interpret 032 as an error, not as 32.  There
+ * is deliberately no way to interpret it as 26 (i.e., as octal).
+ */
+
+/*
+ * Legal characters in a domain name.  Underscore technically is not,
+ * but is a common misunderstanding.
+ */
+static const char namechars[] = "abcdefghijklmnopqrstuvwxyz0123456789"
+                               "ABCDEFGHIJKLMNOPQRSTUVWXYZ-_.";
+
+static const char *try8hex(const char *, size_t, struct in_addr *);
+static const char *try8hosthex(const char *, size_t, struct in_addr *);
+static const char *trydotted(const char *, size_t, struct in_addr *);
+static const char *getbyte(const char **, const char *, int *);
+
+/*
+ - atoaddr - convert ASCII name or dotted-decimal address to binary address
+ */
+const char *                   /* NULL for success, else string literal */
+atoaddr(src, srclen, addrp)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+struct in_addr *addrp;
+{
+       struct hostent *h;
+       struct netent *ne = NULL;
+       const char *oops;
+#      define  HEXLEN  10      /* strlen("0x11223344") */
+#      ifndef ATOADDRBUF
+#      define  ATOADDRBUF      100
+#      endif
+       char namebuf[ATOADDRBUF];
+       char *p = namebuf;
+       char *q;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+
+       /* might it be hex? */
+       if (srclen == HEXLEN && *src == '0' && CIEQ(*(src+1), 'x'))
+               return try8hex(src+2, srclen-2, addrp);
+       if (srclen == HEXLEN && *src == '0' && CIEQ(*(src+1), 'h'))
+               return try8hosthex(src+2, srclen-2, addrp);
+
+       /* try it as dotted decimal */
+       oops = trydotted(src, srclen, addrp);
+       if (oops == NULL)
+               return NULL;            /* it worked */
+       if (*oops != '?')
+               return oops;            /* it *was* probably meant as a d.q. */
+
+       /* try it as a name -- first, NUL-terminate it */
+       if (srclen > sizeof(namebuf)-1) {
+               p = (char *) MALLOC(srclen+1);
+               if (p == NULL)
+                       return "unable to allocate temporary space for name";
+       }
+       p[0] = '\0';
+       strncat(p, src, srclen);
+
+       /* next, check that it's a vaguely legal name */
+       for (q = p; *q != '\0'; q++)
+               if (!isprint(*q))
+                       return "unprintable character in name";
+       if (strspn(p, namechars) != srclen)
+               return "illegal (non-DNS-name) character in name";
+
+       /* try as host name, failing that as /etc/networks network name */
+       h = gethostbyname(p);
+       if (h == NULL)
+               ne = getnetbyname(p);
+       if (p != namebuf)
+               FREE(p);
+       if (h == NULL && ne == NULL)
+               return "name lookup failed";
+
+       if (h != NULL)
+               memcpy(&addrp->s_addr, h->h_addr, sizeof(addrp->s_addr));
+       else
+               addrp->s_addr = htonl(ne->n_net);
+       return NULL;
+}
+
+/*
+ - try8hosthex - try conversion as an eight-digit host-order hex number
+ */
+const char *                   /* NULL for success, else string literal */
+try8hosthex(src, srclen, addrp)
+const char *src;
+size_t srclen;                 /* should be 8 */
+struct in_addr *addrp;
+{
+       const char *oops;
+       unsigned long addr;
+
+       if (srclen != 8)
+               return "internal error, try8hex called with bad length";
+
+       oops = atoul(src, srclen, 16, &addr);
+       if (oops != NULL)
+               return oops;
+
+       addrp->s_addr = addr;
+       return NULL;
+}
+
+/*
+ - try8hex - try conversion as an eight-digit network-order hex number
+ */
+const char *                   /* NULL for success, else string literal */
+try8hex(src, srclen, addrp)
+const char *src;
+size_t srclen;                 /* should be 8 */
+struct in_addr *addrp;
+{
+       const char *oops;
+
+       oops = try8hosthex(src, srclen, addrp);
+       if (oops != NULL)
+               return oops;
+
+       addrp->s_addr = htonl(addrp->s_addr);
+       return NULL;
+}
+
+/*
+ - trydotted - try conversion as dotted decimal
+ *
+ * If the first char of a complaint is '?', that means "didn't look like
+ * dotted decimal at all".
+ */
+const char *                   /* NULL for success, else string literal */
+trydotted(src, srclen, addrp)
+const char *src;
+size_t srclen;
+struct in_addr *addrp;
+{
+       const char *stop = src + srclen;        /* just past end */
+       int byte;
+       const char *oops;
+       unsigned long addr;
+       int i;
+#      define  NBYTES  4
+#      define  BYTE    8
+
+       addr = 0;
+       for (i = 0; i < NBYTES && src < stop; i++) {
+               oops = getbyte(&src, stop, &byte);
+               if (oops != NULL) {
+                       if (*oops != '?')
+                               return oops;    /* bad number */
+                       if (i > 1)
+                               return oops+1;  /* failed number */
+                       return oops;            /* with leading '?' */
+               }
+               addr = (addr << BYTE) | byte;
+               if (i < 3 && src < stop && *src++ != '.') {
+                       if (i == 0)
+                               return "?syntax error in dotted-decimal address";
+                       else
+                               return "syntax error in dotted-decimal address";
+               }
+       }
+       addr <<= (NBYTES - i) * BYTE;
+       if (src != stop)
+               return "extra garbage on end of dotted-decimal address";
+
+       addrp->s_addr = htonl(addr);
+       return NULL;
+}
+
+/*
+ - getbyte - try to scan a byte in dotted decimal
+ * A subtlety here is that all this arithmetic on ASCII digits really is
+ * highly portable -- ANSI C guarantees that digits 0-9 are contiguous.
+ * It's easier to just do it ourselves than set up for a call to atoul().
+ *
+ * If the first char of a complaint is '?', that means "didn't look like a
+ * number at all".
+ */
+const char *                   /* NULL for success, else string literal */
+getbyte(srcp, stop, retp)
+const char **srcp;             /* *srcp is updated */
+const char *stop;              /* first untouchable char */
+int *retp;                     /* return-value pointer */
+{
+       char c;
+       const char *p;
+       int no;
+
+       if (*srcp >= stop)
+               return "?empty number in dotted-decimal address";
+
+       if (stop - *srcp >= 3 && **srcp == '0' && CIEQ(*(*srcp+1), 'x'))
+               return "hex numbers not supported in dotted-decimal addresses";
+#ifdef NOLEADINGZEROS
+       if (stop - *srcp >= 2 && **srcp == '0' && isdigit(*(*srcp+1)))
+               return "octal numbers not supported in dotted-decimal addresses";
+#endif /* NOLEADINGZEROS */
+
+       /* must be decimal, if it's numeric at all */
+       no = 0;
+       p = *srcp;
+       while (p < stop && no <= 255 && (c = *p) >= '0' && c <= '9') {
+               no = no*10 + (c - '0');
+               p++;
+       }
+       if (p == *srcp)
+               return "?non-numeric component in dotted-decimal address";
+       *srcp = p;
+       if (no > 255)
+               return "byte overflow in dotted-decimal address";
+       *retp = no;
+       return NULL;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/atoasr.c linux/net/ipsec/libfreeswan/atoasr.c
--- linux-noipsec/net/ipsec/libfreeswan/atoasr.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/atoasr.c        Tue Dec  7 06:00:51 1999
@@ -0,0 +1,212 @@
+/*
+ * convert from ASCII form of address/subnet/range to binary
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - atoasr - convert ASCII to address, subnet, or range
+ */
+const char *                   /* NULL for success, else string literal */
+atoasr(src, srclen, typep, addrsp)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+char *typep;                   /* return type code:  'a', 's', 'r' */
+struct in_addr addrsp[2];
+{
+       const char *punct;
+       const char *stop;
+       const char *oops;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+
+       /* subnet is easy to spot */
+       punct = memchr(src, '/', srclen);
+       if (punct != NULL) {
+               *typep = 's';
+               return atosubnet(src, srclen, &addrsp[0], &addrsp[1]);
+       }
+
+       /* try for a range */
+       stop = src + srclen;
+       for (punct = src; (punct = memchr(punct, '.', stop - punct)) != NULL;
+                                                                       punct++)
+               if (stop - punct > 3 && *(punct+1) == '.' && *(punct+2) == '.')
+                       break;                  /* NOTE BREAK OUT */
+       if (punct == NULL) {
+               /* didn't find the range delimiter, must be plain address */
+               *typep = 'a';
+               return atoaddr(src, srclen, &addrsp[0]);
+       }
+
+       /* looks like a range */
+       *typep = 'r';
+       if (stop - punct > 4 && *(punct+3) == '.')
+               punct++;                /* first dot is trailing dot of name */
+       oops = atoaddr(src, punct - src, &addrsp[0]);
+       if (oops != NULL)
+               return oops;
+       oops = atoaddr(punct+3, stop - (punct+3), &addrsp[1]);
+       if (oops != NULL)
+               return oops;
+       if (ntohl(addrsp[0].s_addr) > ntohl(addrsp[1].s_addr))
+               return "invalid range, begin > end";
+       return NULL;
+}
+
+
+
+#ifdef ATOASR_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       struct in_addr a[2];
+       char buf[100];
+       const char *oops;
+       size_t n;
+       char type;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {addr|net/mask|begin...end|-r}\n",
+                                                               argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       oops = atoasr(argv[1], 0, &type, a);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       switch (type) {
+       case 'a':
+               n = addrtoa(a[0], 0, buf, sizeof(buf));
+               break;
+       case 's':
+               n = subnettoa(a[0], a[1], 0, buf, sizeof(buf));
+               break;
+       case 'r':
+               n = rangetoa(a, 0, buf, sizeof(buf));
+               break;
+       default:
+               fprintf(stderr, "%s: unknown type '%c'\n", argv[0], type);
+               exit(1);
+               break;
+       }
+       if (n > sizeof(buf)) {
+               fprintf(stderr, "%s: reverse conversion of ", argv[0]);
+               fprintf(stderr, "%s ", inet_ntoa(a[0]));
+               fprintf(stderr, "%s", inet_ntoa(a[1]));
+               fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+                                               (long)n, (long)sizeof(buf));
+               exit(1);
+       }
+       printf("%s\n", buf);
+
+       exit(0);
+}
+
+struct rtab {
+       char *input;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       "1.2.3.0",                      "1.2.3.0",
+       "1.2.3.0/255.255.255.0",        "1.2.3.0/24",
+       "1.2.3.0...1.2.3.5",            "1.2.3.0...1.2.3.5",
+       "1.2.3.4.5",                    NULL,
+       "1.2.3.4/",                     NULL,
+       "1.2.3.4...",                   NULL,
+       "1.2.3.4....",                  NULL,
+       "localhost./32",                "127.0.0.1/32",
+       "localhost....127.0.0.3",       "127.0.0.1...127.0.0.3",
+       "127.0.0.0...localhost.",       "127.0.0.0...127.0.0.1",
+       "127.0.0.3...localhost.",       NULL,
+       NULL,                           NULL
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       struct in_addr a[2];
+       struct in_addr m;
+       char in[100];
+       char buf[100];
+       const char *oops;
+       size_t n;
+       char type;
+
+       for (r = rtab; r->input != NULL; r++) {
+               strcpy(in, r->input);
+               oops = atoasr(in, 0, &type, a);
+               if (oops != NULL && r->output == NULL)
+                       {}              /* okay, error expected */
+               else if (oops != NULL) {
+                       printf("`%s' atoasr failed: %s\n", r->input, oops);
+                       status = 1;
+               } else if (r->output == NULL) {
+                       printf("`%s' atoasr succeeded unexpectedly '%c'\n",
+                                                       r->input, type);
+                       status = 1;
+               } else {
+                       switch (type) {
+                       case 'a':
+                               n = addrtoa(a[0], 0, buf, sizeof(buf));
+                               break;
+                       case 's':
+                               n = subnettoa(a[0], a[1], 0, buf, sizeof(buf));
+                               break;
+                       case 'r':
+                               n = rangetoa(a, 0, buf, sizeof(buf));
+                               break;
+                       default:
+                               fprintf(stderr, "`%s' unknown type '%c'\n",
+                                                       r->input, type);
+                               n = 0;
+                               status = 1;
+                               break;
+                       }
+                       if (n > sizeof(buf)) {
+                               printf("`%s' '%c' reverse failed:  need %ld\n",
+                                               r->input, type, (long)n);
+                               status = 1;
+                       } else if (n > 0 && strcmp(r->output, buf) != 0) {
+                               printf("`%s' '%c' gave `%s', expected `%s'\n",
+                                       r->input, type, buf, r->output);
+                               status = 1;
+                       }
+               }
+       }
+       exit(status);
+}
+
+#endif /* ATOASR_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/atosa.c linux/net/ipsec/libfreeswan/atosa.c
--- linux-noipsec/net/ipsec/libfreeswan/atosa.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/atosa.c Sun Sep 17 20:55:37 2000
@@ -0,0 +1,199 @@
+/*
+ * convert from ASCII form of SA ID to binary
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static struct satype {
+       char *prefix;
+       size_t prelen;          /* strlen(prefix) */
+       int proto;
+} satypes[] = {
+       { "ah",         2,      SA_AH   },
+       { "esp",        3,      SA_ESP  },
+       { "tun",        3,      SA_IPIP },
+       { "comp",       4,      SA_COMP },
+       { NULL,         0,      0,      }
+};
+
+/*
+ - atosa - convert ASCII "ah507@10.0.0.1" to SA identifier
+ */
+const char *                   /* NULL for success, else string literal */
+atosa(src, srclen, sa)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+struct sa_id *sa;
+{
+       const char *at;
+       const char *addr;
+       const char *spi = NULL;
+       struct satype *sat;
+       unsigned long ul;
+       const char *oops;
+#      define  MINLEN  5       /* ah0@0 is as short as it can get */
+       static char ptname[] = PASSTHROUGHNAME;
+#      define  PTNLEN  (sizeof(ptname)-1)      /* -1 for NUL */
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+       if (srclen < MINLEN)
+               return "string too short to be SA specifier";
+       if (srclen == PTNLEN && memcmp(src, ptname, PTNLEN) == 0) {
+               src = PASSTHROUGHIS;
+               srclen = strlen(src);
+       }
+
+       at = memchr(src, '@', srclen);
+       if (at == NULL)
+               return "no @ in SA specifier";
+
+       for (sat = satypes; sat->prefix != NULL; sat++)
+               if (sat->prelen < srclen &&
+                               strncmp(src, sat->prefix, sat->prelen) == 0) {
+                       sa->proto = sat->proto;
+                       spi = src + sat->prelen;
+                       break;                  /* NOTE BREAK OUT */
+               }
+       if (sat->prefix == NULL)
+               return "SA specifier lacks valid protocol prefix";
+
+       if (spi >= at)
+               return "no SPI in SA specifier";
+       oops = atoul(spi, at - spi, 13, &ul);
+       if (oops != NULL)
+               return oops;
+       sa->spi = htonl(ul);
+
+       addr = at + 1;
+       oops = atoaddr(addr, srclen - (addr - src), &sa->dst);
+       if (oops != NULL)
+               return oops;
+
+       return NULL;
+}
+
+
+
+#ifdef ATOSA_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       struct sa_id sa;
+       char buf[100];
+       const char *oops;
+       size_t n;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {ahnnn@aaa|-r}\n", argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       oops = atosa(argv[1], 0, &sa);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       n = satoa(sa, 0, buf, sizeof(buf));
+       if (n > sizeof(buf)) {
+               fprintf(stderr, "%s: reverse conv of `%d'", argv[0], sa.proto);
+               fprintf(stderr, "%lu@", sa.spi);
+               fprintf(stderr, "%s", inet_ntoa(sa.dst));
+               fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+                                               (long)n, (long)sizeof(buf));
+               exit(1);
+       }
+       printf("%s\n", buf);
+
+       exit(0);
+}
+
+struct rtab {
+       char *input;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       "esp257@1.2.3.0",               "esp257@1.2.3.0",
+       "ah0x20@1.2.3.4",               "ah32@1.2.3.4",
+       "tun011@111.2.3.99",            "tun11@111.2.3.99",
+       "",                             NULL,
+       "_",                            NULL,
+       "ah2.2",                        NULL,
+       "goo2@1.2.3.4",                 NULL,
+       "esp9@1.2.3.4",                 "esp9@1.2.3.4",
+       "espp9@1.2.3.4",                NULL,
+       "es9@1.2.3.4",                  NULL,
+       "ah@1.2.3.4",                   NULL,
+       "esp7x7@1.2.3.4",               NULL,
+       "esp77@1.0x2.3.4",              NULL,
+       PASSTHROUGHNAME,                PASSTHROUGHNAME,
+       NULL,                           NULL
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       struct sa_id sa;
+       char in[100];
+       char buf[100];
+       const char *oops;
+       size_t n;
+
+       for (r = rtab; r->input != NULL; r++) {
+               strcpy(in, r->input);
+               oops = atosa(in, 0, &sa);
+               if (oops != NULL && r->output == NULL)
+                       {}              /* okay, error expected */
+               else if (oops != NULL) {
+                       printf("`%s' atosa failed: %s\n", r->input, oops);
+                       status = 1;
+               } else if (r->output == NULL) {
+                       printf("`%s' atosa succeeded unexpectedly\n",
+                                                               r->input);
+                       status = 1;
+               } else {
+                       n = satoa(sa, 'd', buf, sizeof(buf));
+                       if (n > sizeof(buf)) {
+                               printf("`%s' satoa failed:  need %ld\n",
+                                                       r->input, (long)n);
+                               status = 1;
+                       } else if (strcmp(r->output, buf) != 0) {
+                               printf("`%s' gave `%s', expected `%s'\n",
+                                               r->input, buf, r->output);
+                               status = 1;
+                       }
+               }
+       }
+       exit(status);
+}
+
+#endif /* ATOSA_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/atosubnet.c linux/net/ipsec/libfreeswan/atosubnet.c
--- linux-noipsec/net/ipsec/libfreeswan/atosubnet.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/atosubnet.c     Wed Feb 16 19:59:08 2000
@@ -0,0 +1,215 @@
+/*
+ * convert from ASCII form of subnet specification to binary
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+#ifndef DEFAULTSUBNET
+#define        DEFAULTSUBNET   "%default"
+#endif
+
+/*
+ - atosubnet - convert ASCII "addr/mask" to address and mask
+ * Mask can be integer bit count.
+ */
+const char *                   /* NULL for success, else string literal */
+atosubnet(src, srclen, addrp, maskp)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+struct in_addr *addrp;
+struct in_addr *maskp;
+{
+       const char *slash;
+       const char *mask;
+       size_t mlen;
+       const char *oops;
+       unsigned long bc;
+       static char def[] = DEFAULTSUBNET;
+#      define  DEFLEN  (sizeof(def) - 1)       /* -1 for NUL */
+       static char defis[] = "0/0";
+#      define  DEFILEN (sizeof(defis) - 1)
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+
+       if (srclen == DEFLEN && strncmp(src, def, srclen) == 0) {
+               src = defis;
+               srclen = DEFILEN;
+       }
+
+       slash = memchr(src, '/', srclen);
+       if (slash == NULL)
+               return "no / in subnet specification";
+       mask = slash + 1;
+       mlen = srclen - (mask - src);
+
+       oops = atoaddr(src, slash-src, addrp);
+       if (oops != NULL)
+               return oops;
+
+       oops = atoul(mask, mlen, 10, &bc);
+       if (oops == NULL) {
+               /* atoul succeeded, it's a bit-count mask */
+               if (bc > ABITS)
+                       return "bit-count mask too large";
+#ifdef NOLEADINGZEROS
+               if (mlen > 1 && *mask == '0')
+                       return "octal not allowed in mask";
+#endif /* NOLEADINGZEROS */
+               *maskp = bitstomask((int)bc);
+       } else {
+               oops = atoaddr(mask, mlen, maskp);
+               if (oops != NULL)
+                       return oops;
+               if (!goodmask(*maskp))
+                       return "non-contiguous mask";
+       }
+
+       addrp->s_addr &= maskp->s_addr;
+       return NULL;
+}
+
+
+
+#ifdef ATOSUBNET_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       struct in_addr a;
+       struct in_addr m;
+       char buf[100];
+       const char *oops;
+       size_t n;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {addr/mask|-r}\n", argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       oops = atosubnet(argv[1], 0, &a, &m);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       n = subnettoa(a, m, 0, buf, sizeof(buf));
+       if (n > sizeof(buf)) {
+               fprintf(stderr, "%s: reverse conversion of ", argv[0]);
+               fprintf(stderr, "%s/", inet_ntoa(a));
+               fprintf(stderr, "%s", inet_ntoa(m));
+               fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+                                               (long)n, (long)sizeof(buf));
+               exit(1);
+       }
+       printf("%s\n", buf);
+
+       exit(0);
+}
+
+struct rtab {
+       char *input;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       "1.2.3.0/255.255.255.0",        "1.2.3.0/24",
+       "1.2.3.0/24",                   "1.2.3.0/24",
+       "1.2.3.1/255.255.255.240",      "1.2.3.0/28",
+       "1.2.3.1/32",                   "1.2.3.1/32",
+       "1.2.3.1/0",                    "0.0.0.0/0",
+/*     "1.2.3.1/255.255.127.0",        "1.2.3.0/255.255.127.0",        */
+       "1.2.3.1/255.255.127.0",        NULL,
+       "128.009.000.032/32",           "128.9.0.32/32",
+       "128.0x9.0.32/32",              NULL,
+       "0x80090020/32",                "128.9.0.32/32",
+       "0x800x0020/32",                NULL,
+       "128.9.0.32/0xffFF0000",        "128.9.0.0/16",
+       "128.9.0.32/0xff0000FF",        NULL,
+       "128.9.0.32/0x0000ffFF",        NULL,
+       "128.9.0.32/0x00ffFF0000",      NULL,
+       "128.9.0.32/0xffFF",            NULL,
+       "128.9.0.32.27/32",             NULL,
+       "128.9.0k32/32",                NULL,
+       "328.9.0.32/32",                NULL,
+       "128.9..32/32",                 NULL,
+       "10/8",                         "10.0.0.0/8",
+       "10.0/8",                       "10.0.0.0/8",
+       "10.0.0/8",                     "10.0.0.0/8",
+       "10.0.1/24",                    "10.0.1.0/24",
+       "_",                            NULL,
+       "_/_",                          NULL,
+       "1.2.3.1",                      NULL,
+       "1.2.3.1/_",                    NULL,
+       "1.2.3.1/24._",                 NULL,
+       "1.2.3.1/99",                   NULL,
+       "localhost./32",                "127.0.0.1/32",
+       "%default",                     "0.0.0.0/0",
+       NULL,                           NULL
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       struct in_addr a;
+       struct in_addr m;
+       char in[100];
+       char buf[100];
+       const char *oops;
+       size_t n;
+
+       for (r = rtab; r->input != NULL; r++) {
+               strcpy(in, r->input);
+               oops = atosubnet(in, 0, &a, &m);
+               if (oops != NULL && r->output == NULL)
+                       {}              /* okay, error expected */
+               else if (oops != NULL) {
+                       printf("`%s' atosubnet failed: %s\n", r->input, oops);
+                       status = 1;
+               } else if (r->output == NULL) {
+                       printf("`%s' atosubnet succeeded unexpectedly\n",
+                                                               r->input);
+                       status = 1;
+               } else {
+                       n = subnettoa(a, m, 0, buf, sizeof(buf));
+                       if (n > sizeof(buf)) {
+                               printf("`%s' subnettoa failed:  need %ld\n",
+                                                       r->input, (long)n);
+                               status = 1;
+                       } else if (strcmp(r->output, buf) != 0) {
+                               printf("`%s' gave `%s', expected `%s'\n",
+                                               r->input, buf, r->output);
+                               status = 1;
+                       }
+               }
+       }
+       exit(status);
+}
+
+#endif /* ATOSUBNET_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/atoul.c linux/net/ipsec/libfreeswan/atoul.c
--- linux-noipsec/net/ipsec/libfreeswan/atoul.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/atoul.c Tue Dec  7 06:00:52 1999
@@ -0,0 +1,90 @@
+/*
+ * convert from ASCII form of unsigned long to binary
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - atoul - convert ASCII substring to unsigned long number
+ */
+const char *                   /* NULL for success, else string literal */
+atoul(src, srclen, base, resultp)
+const char *src;
+size_t srclen;                 /* 0 means strlen(src) */
+int base;                      /* 0 means figure it out */
+unsigned long *resultp;
+{
+       const char *stop;
+       static char hex[] = "0123456789abcdef";
+       static char uchex[] = "0123456789ABCDEF";
+       int d;
+       char c;
+       char *p;
+       unsigned long r;
+       unsigned long rlimit;
+       int dlimit;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+
+       if (base == 0 || base == 13) {
+               if (srclen > 2 && *src == '0' && CIEQ(*(src+1), 'x'))
+                       return atoul(src+2, srclen-2, 16, resultp);
+               if (srclen > 1 && *src == '0' && base != 13)
+                       return atoul(src+1, srclen-1, 8, resultp);
+               return atoul(src, srclen, 10, resultp);
+       }
+       if (base != 8 && base != 10 && base != 16)
+               return "unsupported number base";
+
+       r = 0;
+       stop = src + srclen;
+       if (base == 16) {
+               while (src < stop) {
+                       c = *src++;
+                       p = strchr(hex, c);
+                       if (p != NULL)
+                               d = p - hex;
+                       else {
+                               p = strchr(uchex, c);
+                               if (p == NULL)
+                                       return "non-hex-digit in hex number";
+                               d = p - uchex;
+                       }
+                       r = (r << 4) | d;
+               }
+               /* defer length check to catch invalid digits first */
+               if (srclen > sizeof(unsigned long) * 2)
+                       return "hex number too long";
+       } else {
+               rlimit = ULONG_MAX / base;
+               dlimit = (int)(ULONG_MAX - rlimit*base);
+               while (src < stop) {
+                       c = *src++;
+                       d = c - '0';
+                       if (d < 0 || d >= base)
+                               return "non-digit in number";
+                       if (r > rlimit || (r == rlimit && d > dlimit))
+                               return "unsigned-long overflow";
+                       r = r*base + d;
+               }
+       }
+
+       *resultp = r;
+       return NULL;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/datatot.c linux/net/ipsec/libfreeswan/datatot.c
--- linux-noipsec/net/ipsec/libfreeswan/datatot.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/datatot.c       Fri Aug 18 17:09:07 2000
@@ -0,0 +1,225 @@
+/*
+ * convert from binary data (e.g. key) to text form
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static void convert(const char *src, size_t nreal, int format, char *out);
+
+/*
+ - datatot - convert data bytes to text
+ */
+size_t                         /* true length (with NUL) for success */
+datatot(src, srclen, format, dst, dstlen)
+const char *src;
+size_t srclen;
+int format;                    /* character indicating what format */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t inblocksize;     /* process this many bytes at a time */
+       size_t outblocksize;    /* producing this many */
+       size_t breakevery;      /* add a _ every this many (0 means don't) */
+       size_t sincebreak;      /* output bytes since last _ */
+       char inblock[10];       /* enough for any format */
+       char outblock[10];      /* enough for any format */
+       char fake[1];           /* fake output area for dstlen == 0 */
+       size_t needed;          /* return value */
+       char *stop;             /* where the terminating NUL will go */
+       size_t ntodo;           /* remaining input */
+       size_t nreal;
+       char *out;
+       char *prefix;
+
+       breakevery = 0;
+       switch (format) {
+       case 0:
+       case 'h':
+               format = 'x';
+               breakevery = 8;
+               /* FALLTHROUGH */
+       case 'x':
+               inblocksize = 1;
+               outblocksize = 2;
+               prefix = "0x";
+               break;
+       case 16:
+               inblocksize = 1;
+               outblocksize = 2;
+               prefix = "";
+               format = 'x';
+               break;
+       case 's':
+               inblocksize = 3;
+               outblocksize = 4;
+               prefix = "0s";
+               break;
+       case 64:                /* beware, equals ' ' */
+               inblocksize = 3;
+               outblocksize = 4;
+               prefix = "";
+               format = 's';
+               break;
+       default:
+               return 0;
+               break;
+       }
+       assert(inblocksize < sizeof(inblock));
+       assert(outblocksize < sizeof(outblock));
+       assert(breakevery % outblocksize == 0);
+
+       if (srclen == 0)
+               return 0;
+       ntodo = srclen;
+
+       if (dstlen == 0) {      /* dispose of awkward special case */
+               dst = fake;
+               dstlen = 1;
+       }
+       stop = dst + dstlen - 1;
+
+       nreal = strlen(prefix);
+       needed = nreal;                 /* for starters */
+       if (dstlen <= nreal) {          /* prefix won't fit */
+               strncpy(dst, prefix, dstlen - 1);
+               dst += dstlen - 1;
+       } else {
+               strcpy(dst, prefix);
+               dst += nreal;
+       }
+       assert(dst <= stop);
+       sincebreak = 0;
+
+       while (ntodo > 0) {
+               if (ntodo < inblocksize) {      /* incomplete input */
+                       memset(inblock, 0, sizeof(inblock));
+                       memcpy(inblock, src, ntodo);
+                       src = inblock;
+                       nreal = ntodo;
+                       ntodo = inblocksize;
+               } else
+                       nreal = inblocksize;
+               out = (outblocksize > stop - dst) ? outblock : dst;
+
+               convert(src, nreal, format, out);
+               needed += outblocksize;
+               sincebreak += outblocksize;
+               if (dst < stop) {
+                       if (out != dst) {
+                               assert(outblocksize > stop - dst);
+                               memcpy(dst, out, stop - dst);
+                               dst = stop;
+                       } else
+                               dst += outblocksize;
+               }
+
+               src += inblocksize;
+               ntodo -= inblocksize;
+               if (breakevery != 0 && sincebreak >= breakevery && ntodo > 0) {
+                       if (dst < stop)
+                               *dst++ = '_';
+                       needed++;
+                       sincebreak = 0;
+               }
+       }
+
+       assert(dst <= stop);
+       *dst++ = '\0';
+       needed++;
+
+       return needed;
+}
+
+/*
+ - convert - convert one input block to one output block
+ */
+static void
+convert(src, nreal, format, out)
+const char *src;
+size_t nreal;                  /* how much of the input block is real */
+int format;
+char *out;
+{
+       static char hex[] = "0123456789abcdef";
+       static char base64[] =  "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                               "abcdefghijklmnopqrstuvwxyz"
+                               "0123456789+/";
+       unsigned char c;
+       unsigned char c1, c2, c3;
+
+       assert(nreal > 0);
+       switch (format) {
+       case 'x':
+               assert(nreal == 1);
+               c = (unsigned char)*src;
+               *out++ = hex[c >> 4];
+               *out++ = hex[c & 0xf];
+               break;
+       case 's':
+               c1 = (unsigned char)*src++;
+               c2 = (unsigned char)*src++;
+               c3 = (unsigned char)*src++;
+               *out++ = base64[c1 >> 2];       /* top 6 bits of c1 */
+               c = (c1 & 0x3) << 4;            /* bottom 2 of c1... */
+               c |= c2 >> 4;                   /* ...top 4 of c2 */
+               *out++ = base64[c];
+               if (nreal == 1)
+                       *out++ = '=';
+               else {
+                       c = (c2 & 0xf) << 2;    /* bottom 4 of c2... */
+                       c |= c3 >> 6;           /* ...top 2 of c3 */
+                       *out++ = base64[c];
+               }
+               if (nreal <= 2)
+                       *out++ = '=';
+               else
+                       *out++ = base64[c3 & 0x3f];     /* bottom 6 of c3 */
+               break;
+       default:
+               assert(nreal == 0);     /* unknown format */
+               break;
+       }
+}
+
+/*
+ - datatoa - convert data to ASCII
+ * backward-compatibility synonym for datatot
+ */
+size_t                         /* true length (with NUL) for success */
+datatoa(src, srclen, format, dst, dstlen)
+const char *src;
+size_t srclen;
+int format;                    /* character indicating what format */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       return datatot(src, srclen, format, dst, dstlen);
+}
+
+/*
+ - bytestoa - convert data bytes to ASCII
+ * backward-compatibility synonym for datatot
+ */
+size_t                         /* true length (with NUL) for success */
+bytestoa(src, srclen, format, dst, dstlen)
+const char *src;
+size_t srclen;
+int format;                    /* character indicating what format */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       return datatot(src, srclen, format, dst, dstlen);
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/freeswan.h linux/net/ipsec/libfreeswan/freeswan.h
--- linux-noipsec/net/ipsec/libfreeswan/freeswan.h      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/freeswan.h      Mon Nov  6 05:37:12 2000
@@ -0,0 +1,474 @@
+#ifndef _FREESWAN_H
+/*
+ * header file for FreeS/WAN library functions
+ * Copyright (C) 1998, 1999, 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#define        _FREESWAN_H     /* seen it, no need to see it again */
+
+
+
+/*
+ * First, assorted kernel-version-dependent trickery.
+ */
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0)
+#define HEADER_CACHE_BIND_21
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#define SPINLOCK
+#  if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+#  define SPINLOCK_23
+#  endif
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,25)
+#define PROC_FS_2325
+#else
+#  if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#  define PROC_FS_21
+#  endif
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+#define NETDEV_23
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#define NETLINK_SOCK
+#define NET_21
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,30)
+#define PROC_NO_DUMMY
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,35)
+#define SKB_COPY_EXPAND
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,37)
+#define IP_SELECT_IDENT
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,50)) && defined(CONFIG_NETFILTER)
+#define SKB_RESET_NFCT
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,19)
+#define net_device_stats enet_statistics
+#endif                                                                         
+
+
+
+/*
+ * We've just got to have some datatypes defined...  And annoyingly, just
+ * where we get them depends on whether we're in userland or not.
+ */
+#ifdef __KERNEL__
+
+#  include <linux/types.h>
+#  include <linux/in.h>
+
+#  ifdef NET_21
+#    include <linux/in6.h>
+#  else
+     /* old kernel in.h has some IPv6 stuff, but not quite enough */
+#    define    s6_addr16       s6_addr
+#    define    AF_INET6        10
+#    define uint8_t __u8
+#    define uint16_t __u16 
+#    define uint32_t __u32 
+#    define uint64_t __u64 
+#  endif
+
+#  ifndef SPINLOCK
+#    include <linux/bios32.h>
+     /* simulate spin locks and read/write locks */
+     typedef struct {
+       volatile char lock;
+     } spinlock_t;
+
+     typedef struct {
+       volatile unsigned int lock;
+     } rwlock_t;                                                                     
+
+#    define spin_lock_init(x) { (x)->lock = 0;}
+#    define rw_lock_init(x) { (x)->lock = 0; }
+
+#    define spin_lock(x) { while ((x)->lock) barrier(); (x)->lock=1;}
+#    define spin_lock_irq(x) { cli(); spin_lock(x);}
+#    define spin_lock_irqsave(x,flags) { save_flags(flags); spin_lock_irq(x);}
+
+#    define spin_unlock(x) { (x)->lock=0;}
+#    define spin_unlock_irq(x) { spin_unlock(x); sti();}
+#    define spin_unlock_irqrestore(x,flags) { spin_unlock(x); restore_flags(flags);}
+
+#    define read_lock(x) spin_lock(x)
+#    define read_lock_irq(x) spin_lock_irq(x)
+#    define read_lock_irqsave(x,flags) spin_lock_irqsave(x,flags)
+
+#    define read_unlock(x) spin_unlock(x)
+#    define read_unlock_irq(x) spin_unlock_irq(x)
+#    define read_unlock_irqrestore(x,flags) spin_unlock_irqrestore(x,flags)
+
+#    define write_lock(x) spin_lock(x)
+#    define write_lock_irq(x) spin_lock_irq(x)
+#    define write_lock_irqsave(x,flags) spin_lock_irqsave(x,flags)
+
+#    define write_unlock(x) spin_unlock(x)
+#    define write_unlock_irq(x) spin_unlock_irq(x)
+#    define write_unlock_irqrestore(x,flags) spin_unlock_irqrestore(x,flags)
+#  endif /* !SPINLOCK */
+
+#  ifndef SPINLOCK_23
+#    define spin_lock_bh(x)  spin_lock_irq(x)
+#    define spin_unlock_bh(x)  spin_unlock_irq(x)
+
+#    define read_lock_bh(x)  read_lock_irq(x)
+#    define read_unlock_bh(x)  read_unlock_irq(x)
+
+#    define write_lock_bh(x)  write_lock_irq(x)
+#    define write_unlock_bh(x)  write_unlock_irq(x)
+#  endif /* !SPINLOCK_23 */
+
+#ifndef IPPROTO_COMP
+#define IPPROTO_COMP 108
+#endif /* !IPPROTO_COMP */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define DEBUG_NO_STATIC
+#else /* CONFIG_IPSEC_DEBUG */
+#define DEBUG_NO_STATIC static
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#else /* __KERNEL__ */
+
+#  include <stdio.h>
+#  include <netinet/in.h>
+
+#  define uint8_t u_int8_t
+#  define uint16_t u_int16_t 
+#  define uint32_t u_int32_t 
+#  define uint64_t u_int64_t 
+
+#define DEBUG_NO_STATIC static
+
+#endif /* __KERNEL__ */
+
+
+
+/*
+ * Basic data types for the address-handling functions.
+ * ip_address and ip_subnet are supposed to be opaque types; do not
+ * use their definitions directly, they are subject to change!
+ */
+
+/* first, some quick fakes in case we're on an old system with no IPv6 */
+#ifndef __KERNEL__
+#ifndef IN6ADDR_ANY_INIT
+struct in6_addr {
+       unsigned char s6_addr16[16];
+};
+struct sockaddr_in6 {
+       unsigned short sin6_family;
+       unsigned short sin6_port;
+       unsigned long sin6_flowinfo;
+       struct {
+               unsigned char s6_addr16[16];
+       } sin6_addr;
+};
+#endif /* !IN6ADDR_ANY_INIT */
+#endif /* !__KERNEL__ */
+
+/* then the main types */
+typedef struct {
+       union {
+               struct sockaddr_in v4;
+               struct sockaddr_in6 v6;
+       } u;
+} ip_address;
+typedef struct {
+       ip_address addr;
+       int maskbits;
+} ip_subnet;
+
+/* and the SA ID stuff */
+#ifdef __KERNEL__
+typedef __u32 ipsec_spi_t;
+#else
+typedef u_int32_t ipsec_spi_t;
+#endif
+typedef struct {               /* to identify an SA, we need: */
+        ip_address dst;                /* A. destination host */
+        ipsec_spi_t spi;       /* B. 32-bit SPI, assigned by dest. host */
+       int proto;              /* C. protocol */
+#              define  SA_ESP  50      /* IPPROTO_ESP */
+#              define  SA_AH   51      /* IPPROTO_AH */
+#              define  SA_IPIP 4       /* IPPROTO_IPIP */
+#              define  SA_COMP 108     /* IPPROTO_COMP */
+} ip_said;
+struct sa_id {                 /* old v4-only version */
+        struct in_addr dst;
+        ipsec_spi_t spi;
+       int proto;
+};
+
+/* misc */
+typedef const char *err_t;     /* error message, or NULL for success */
+
+
+
+/*
+ * new IPv6-compatible functions
+ */
+
+/* text conversions */
+err_t ttoul(const char *src, size_t srclen, int format, unsigned long *dst);
+size_t ultot(unsigned long src, int format, char *buf, size_t buflen);
+#define        ULTOT_BUF       (22+1)  /* holds 64 bits in octal */
+err_t ttoaddr(const char *src, size_t srclen, int af, ip_address *dst);
+err_t tnatoaddr(const char *src, size_t srclen, int af, ip_address *dst);
+size_t addrtot(const ip_address *src, int format, char *buf, size_t buflen);
+/* RFC 1886 old IPv6 reverse-lookup format is the bulkiest */
+#define        ADDRTOT_BUF     (32*2 + 3 + 1 + 3 + 1 + 1)
+err_t ttosubnet(const char *src, size_t srclen, int af, ip_subnet *dst);
+size_t subnettot(const ip_subnet *src, int format, char *buf, size_t buflen);
+#define        SUBNETTOT_BUF   (ADDRTOT_BUF + 1 + 3)
+err_t ttosa(const char *src, size_t srclen, ip_said *dst);
+size_t satot(const ip_said *src, int format, char *bufptr, size_t buflen);
+#define        SATOT_BUF       (5 + ULTOA_BUF + 1 + ADDRTOT_BUF)
+err_t ttodata(const char *src, size_t srclen, int base, char *buf,
+                                               size_t buflen, size_t *needed);
+size_t datatot(const char *src, size_t srclen, int format, char *buf,
+                                                               size_t buflen);
+
+/* initializations */
+void initsaid(const ip_address *addr, ipsec_spi_t spi, int proto, ip_said *dst);
+err_t loopbackaddr(int af, ip_address *dst);
+err_t unspecaddr(int af, ip_address *dst);
+err_t anyaddr(int af, ip_address *dst);
+err_t initaddr(const unsigned char *src, size_t srclen, int af, ip_address *dst);
+err_t initsubnet(const ip_address *addr, int maskbits, int clash, ip_subnet *dst);
+
+/* misc. conversions and related */
+err_t rangetosubnet(const ip_address *from, const ip_address *to, ip_subnet *dst);
+int addrtypeof(const ip_address *src);
+int subnettypeof(const ip_subnet *src);
+size_t addrlenof(const ip_address *src);
+size_t addrbytesptr(const ip_address *src, const unsigned char **dst);
+size_t addrbytesof(const ip_address *src, unsigned char *dst, size_t dstlen);
+int masktocount(const ip_address *src);
+void networkof(const ip_subnet *src, ip_address *dst);
+void maskof(const ip_subnet *src, ip_address *dst);
+
+/* tests */
+int sameaddr(const ip_address *a, const ip_address *b);
+int addrcmp(const ip_address *a, const ip_address *b);
+int samesubnet(const ip_subnet *a, const ip_subnet *b);
+int addrinsubnet(const ip_address *a, const ip_subnet *s);
+int subnetinsubnet(const ip_subnet *a, const ip_subnet *b);
+int subnetishost(const ip_subnet *s);
+int samesaid(const ip_said *a, const ip_said *b);
+int sameaddrtype(const ip_address *a, const ip_address *b);
+int samesubnettype(const ip_subnet *a, const ip_subnet *b);
+int isanyaddr(const ip_address *src);
+int isunspecaddr(const ip_address *src);
+int isloopbackaddr(const ip_address *src);
+
+/* low-level grot */
+int portof(const ip_address *src);
+void setportof(int port, ip_address *dst);
+struct sockaddr *sockaddrof(ip_address *src);
+size_t sockaddrlenof(const ip_address *src);
+
+
+
+/*
+ * old functions, to be deleted eventually
+ */
+
+/* unsigned long */
+const char *                   /* NULL for success, else string literal */
+atoul(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       int base,               /* 0 means figure it out */
+       unsigned long *resultp
+);
+size_t                         /* space needed for full conversion */
+ultoa(
+       unsigned long n,
+       int base,
+       char *dst,
+       size_t dstlen
+);
+#define        ULTOA_BUF       21      /* just large enough for largest result, */
+                               /* assuming 64-bit unsigned long! */
+
+/* Internet addresses */
+const char *                   /* NULL for success, else string literal */
+atoaddr(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       struct in_addr *addr
+);
+size_t                         /* space needed for full conversion */
+addrtoa(
+       struct in_addr addr,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        ADDRTOA_BUF     16      /* just large enough for largest result */
+
+/* subnets */
+const char *                   /* NULL for success, else string literal */
+atosubnet(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       struct in_addr *addr,
+       struct in_addr *mask
+);
+size_t                         /* space needed for full conversion */
+subnettoa(
+       struct in_addr addr,
+       struct in_addr mask,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        SUBNETTOA_BUF   32      /* large enough for worst case result */
+
+/* ranges */
+const char *                   /* NULL for success, else string literal */
+atoasr(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       char *type,             /* 'a', 's', 'r' */
+       struct in_addr *addrs   /* two-element array */
+);
+size_t                         /* space needed for full conversion */
+rangetoa(
+       struct in_addr *addrs,  /* two-element array */
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        RANGETOA_BUF    34      /* large enough for worst case result */
+
+/* data types for SA conversion functions */
+
+/* SAs */
+const char *                   /* NULL for success, else string literal */
+atosa(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       struct sa_id *sa
+);
+size_t                         /* space needed for full conversion */
+satoa(
+       struct sa_id sa,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        SATOA_BUF       (3+ULTOA_BUF+ADDRTOA_BUF)
+
+/* generic data, e.g. keys */
+const char *                   /* NULL for success, else string literal */
+atobytes(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       char *dst,
+       size_t dstlen,
+       size_t *lenp            /* NULL means don't bother telling me */
+);
+size_t                         /* 0 failure, else true size */
+bytestoa(
+       const char *src,
+       size_t srclen,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+
+/* old versions of generic-data functions; deprecated */
+size_t                         /* 0 failure, else true size */
+atodata(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       char *dst,
+       size_t dstlen
+);
+size_t                         /* 0 failure, else true size */
+datatoa(
+       const char *src,
+       size_t srclen,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+
+/* part extraction and special addresses */
+struct in_addr
+subnetof(
+       struct in_addr addr,
+       struct in_addr mask
+);
+struct in_addr
+hostof(
+       struct in_addr addr,
+       struct in_addr mask
+);
+struct in_addr
+broadcastof(
+       struct in_addr addr,
+       struct in_addr mask
+);
+
+/* mask handling */
+int
+goodmask(
+       struct in_addr mask
+);
+int
+masktobits(
+       struct in_addr mask
+);
+struct in_addr
+bitstomask(
+       int n
+);
+
+
+
+/*
+ * general utilities
+ */
+
+#ifndef __KERNEL__
+/* option pickup from files (userland only because of use of FILE) */
+const char *optionsfrom(const char *filename, int *argcp, char ***argvp,
+                                               int optind, FILE *errorreport);
+#endif
+
+
+
+#endif /* _FREESWAN_H */
diff -druN linux-noipsec/net/ipsec/libfreeswan/goodmask.c linux/net/ipsec/libfreeswan/goodmask.c
--- linux-noipsec/net/ipsec/libfreeswan/goodmask.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/goodmask.c      Wed Feb 16 19:54:24 2000
@@ -0,0 +1,97 @@
+/*
+ * minor utilities for subnet-mask manipulation
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - goodmask - is this a good (^1*0*$) subnet mask?
+ * You are not expected to understand this.  See Henry S. Warren Jr, 
+ * "Functions realizable with word-parallel logical and two's-complement
+ * addition instructions", CACM 20.6 (June 1977), p.439.
+ */
+int                            /* predicate */
+goodmask(mask)
+struct in_addr mask;
+{
+       unsigned long x = ntohl(mask.s_addr);
+       /* clear rightmost contiguous string of 1-bits */
+#      define  CRCS1B(x)       (((x|(x-1))+1)&x)
+#      define  TOPBIT          (1UL << 31)
+
+       /* either zero, or has one string of 1-bits which is left-justified */
+       if (x == 0 || (CRCS1B(x) == 0 && (x&TOPBIT)))
+               return 1;
+       return 0;
+}
+
+/*
+ - masktobits - how many bits in this mask?
+ * The algorithm is essentially a binary search, but highly optimized
+ * for this particular task.
+ */
+int                            /* -1 means !goodmask() */
+masktobits(mask)
+struct in_addr mask;
+{
+       unsigned long m = ntohl(mask.s_addr);
+       int masklen;
+
+       if (!goodmask(mask))
+               return -1;
+
+       if (m&0x00000001UL)
+               return 32;
+       masklen = 0;
+       if (m&(0x0000ffffUL<<1)) {      /* <<1 for 1-origin numbering */
+               masklen |= 0x10;
+               m <<= 16;
+       }
+       if (m&(0x00ff0000UL<<1)) {
+               masklen |= 0x08;
+               m <<= 8;
+       }
+       if (m&(0x0f000000UL<<1)) {
+               masklen |= 0x04;
+               m <<= 4;
+       }
+       if (m&(0x30000000UL<<1)) {
+               masklen |= 0x02;
+               m <<= 2;
+       }
+       if (m&(0x40000000UL<<1))
+               masklen |= 0x01;
+
+       return masklen;
+}
+
+/*
+ - bitstomask - return a mask with this many high bits on
+ */
+struct in_addr
+bitstomask(n)
+int n;
+{
+       struct in_addr result;
+
+       if (n > 0 && n <= ABITS)
+               result.s_addr = htonl(~((1UL << (ABITS - n)) - 1));
+       else if (n == 0)
+               result.s_addr = 0;
+       else
+               result.s_addr = 0;      /* best error report we can do */
+       return result;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/initaddr.c linux/net/ipsec/libfreeswan/initaddr.c
--- linux-noipsec/net/ipsec/libfreeswan/initaddr.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/initaddr.c      Fri Aug 25 16:40:05 2000
@@ -0,0 +1,51 @@
+/*
+ * initialize address structure
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - initaddr - initialize ip_address from bytes
+ */
+err_t                          /* NULL for success, else string literal */
+initaddr(src, srclen, af, dst)
+const unsigned char *src;
+size_t srclen;
+int af;                                /* address family */
+ip_address *dst;
+{
+       switch (af) {
+       case AF_INET:
+               if (srclen != 4)
+                       return "IPv4 address must be exactly 4 bytes";
+               dst->u.v4.sin_family = af;
+               dst->u.v4.sin_port = 0;         /* unused */
+               memcpy((char *)&dst->u.v4.sin_addr.s_addr, src, srclen);
+               break;
+       case AF_INET6:
+               if (srclen != 16)
+                       return "IPv6 address must be exactly 16 bytes";
+               dst->u.v6.sin6_family = af;
+               dst->u.v6.sin6_flowinfo = 0;            /* unused */
+               dst->u.v6.sin6_port = 0;                /* unused */
+               memcpy((char *)&dst->u.v6.sin6_addr, src, srclen);
+               break;
+       default:
+               return "unknown address family in initaddr";
+               break;
+       }
+       return NULL;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/initsaid.c linux/net/ipsec/libfreeswan/initsaid.c
--- linux-noipsec/net/ipsec/libfreeswan/initsaid.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/initsaid.c      Fri Sep  8 20:03:45 2000
@@ -0,0 +1,33 @@
+/*
+ * initialize SA ID structure
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - initsaid - initialize SA ID from bits
+ */
+void
+initsaid(addr, spi, proto, dst)
+const ip_address *addr;
+ipsec_spi_t spi;
+int proto;
+ip_said *dst;
+{
+       dst->dst = *addr;
+       dst->spi = spi;
+       dst->proto = proto;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/initsubnet.c linux/net/ipsec/libfreeswan/initsubnet.c
--- linux-noipsec/net/ipsec/libfreeswan/initsubnet.c    Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/initsubnet.c    Fri Sep  8 20:03:45 2000
@@ -0,0 +1,77 @@
+/*
+ * initialize subnet structure
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - initsubnet - initialize ip_subnet from address and count
+ *
+ * The only hard part is checking for host-part bits turned on.
+ */
+err_t                          /* NULL for success, else string literal */
+initsubnet(addr, count, clash, dst)
+const ip_address *addr;
+int count;
+int clash;                     /* '0' zero host-part bits, 'x' die on them */
+ip_subnet *dst;
+{
+       unsigned char *p;
+       int n;
+       int c;
+       unsigned m;
+       int die;
+
+       dst->addr = *addr;
+       n = addrbytesptr(&dst->addr, (const unsigned char **)&p);
+       if (n == 0)
+               return "unknown address family";
+
+       switch (clash) {
+       case '0':
+               die = 0;
+               break;
+       case 'x':
+               die = 1;
+               break;
+       default:
+               return "unknown clash-control value in initsubnet";
+               break;
+       }
+
+       c = count / 8;
+       if (c > n)
+               return "impossible mask count";
+       p += c;
+       n -= c;
+
+       m = 0xff;
+       c = count % 8;
+       if (n > 0 && c != 0)    /* partial byte */
+               m >>= c;
+       for (; n > 0; n--) {
+               if ((*p & m) != 0) {
+                       if (die)
+                               return "improper subnet, host-part bits on";
+                       *p &= ~m;
+               }
+               m = 0xff;
+               p++;
+       }
+
+       dst->maskbits = count;
+       return NULL;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/internal.h linux/net/ipsec/libfreeswan/internal.h
--- linux-noipsec/net/ipsec/libfreeswan/internal.h      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/internal.h      Tue Aug  8 04:34:15 2000
@@ -0,0 +1,81 @@
+/*
+ * internal definitions for use within the library; do not export!
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+
+#ifndef ABITS
+#define        ABITS   32      /* bits in an IPv4 address */
+#endif
+
+/* case-independent ASCII character equality comparison */
+#define        CIEQ(c1, c2)    ( ((c1)&~040) == ((c2)&~040) )
+
+/* syntax for passthrough SA */
+#ifndef PASSTHROUGHNAME
+#define        PASSTHROUGHNAME "%passthrough"
+#define        PASSTHROUGH4NAME        "%passthrough4"
+#define        PASSTHROUGH6NAME        "%passthrough6"
+#define        PASSTHROUGHIS   "tun0@0.0.0.0"
+#define        PASSTHROUGH4IS  "tun0@0.0.0.0"
+#define        PASSTHROUGH6IS  "tun0@::"
+#define        PASSTHROUGHTYPE "tun"
+#define        PASSTHROUGHSPI  0
+#define        PASSTHROUGHDST  0
+#endif
+
+/*
+ * Headers, greatly complicated by stupid and unnecessary inconsistencies
+ * between the user environment and the kernel environment.  These are done
+ * here so that this mess need exist in only one place.
+ *
+ * It may seem like a -I or two could avoid most of this, but on closer
+ * inspection it is not quite that easy.
+ */
+
+/* things that need to come from one place or the other, depending */
+#ifdef __KERNEL__
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#define        assert(foo)     /* nothing */
+#else
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#endif
+
+/* things that exist only in userland */
+#ifndef __KERNEL__
+
+/* You'd think this would be okay in the kernel too -- it's just a */
+/* bunch of constants -- but no, in RH5.1 it screws up other things. */
+/* (Credit:  Mike Warfield tracked this problem down.  Thanks Mike!) */
+/* Fortunately, we don't need it in the kernel subset of the library. */
+#include <limits.h>
+
+/* header files for things that should never be called in kernel */
+#include <netdb.h>
+
+/* memory allocation, currently user-only, macro-ized just in case */
+#include <stdlib.h>
+#define        MALLOC(n)       malloc(n)
+#define        FREE(p)         free(p)
+
+#endif /* __KERNEL__ */
+
diff -druN linux-noipsec/net/ipsec/libfreeswan/optionsfrom.c linux/net/ipsec/libfreeswan/optionsfrom.c
--- linux-noipsec/net/ipsec/libfreeswan/optionsfrom.c   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/optionsfrom.c   Sun Apr 11 01:24:21 1999
@@ -0,0 +1,301 @@
+/*
+ * pick up more options from a file, in the middle of an option scan
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+#include <stdio.h>
+
+#define        MAX     100             /* loop-detection limit */
+
+/* internal work area */
+struct work {
+#      define  LOTS    1024
+       char buf[LOTS];
+       char *line;
+       char *pending;
+};
+
+static const char *dowork(const char *, int *, char ***, int);
+static const char *getanarg(FILE *, struct work *, char **);
+static char *getline(FILE *, char *, size_t);
+
+/*
+ - optionsfrom - add some options, taken from a file, to argc/argv
+ * If errsto is non-NULL, does not return in event of error.
+ */
+const char *                   /* NULL for success, else string literal */
+optionsfrom(filename, argcp, argvp, optind, errsto)
+const char *filename;
+int *argcp;                    /* pointer to argc */
+char ***argvp;                 /* pointer to argv */
+int optind;                    /* current optind, number of next argument */
+FILE *errsto;                  /* where to report errors (NULL means return) */
+{
+       const char *e;
+       static int nuses = 0;
+
+       if (errsto != NULL) {
+               nuses++;
+               if (nuses >= MAX) {
+                       fprintf(errsto,
+                               "%s: optionsfrom called %d times, looping?\n",
+                               (*argvp)[0], nuses);
+                       exit(2);
+               }
+       } else
+               nuses = 0;
+
+       e = dowork(filename, argcp, argvp, optind);
+       if (e != NULL && errsto != NULL) {
+               fprintf(errsto, "%s: optionsfrom failed: %s\n", (*argvp)[0], e);
+               exit(2);
+       }
+       return e;
+}
+
+/*
+ - dowork - do all the real work of optionsfrom
+ * Does not alter the existing arguments, but does relocate and alter
+ * the argv pointer vector.
+ */
+static const char *            /* NULL for success, else string literal */
+dowork(filename, argcp, argvp, optind)
+const char *filename;
+int *argcp;                    /* pointer to argc */
+char ***argvp;                 /* pointer to argv */
+int optind;                    /* current optind, number of next argument */
+{
+       char **newargv;
+       char **tmp;
+       int newargc;
+       int next;               /* place for next argument */
+       int room;               /* how many more new arguments we can hold */
+#      define  SOME    10      /* first guess at how many we'll need */
+       FILE *f;
+       int i;
+       const char *p;
+       struct work wa;         /* for getanarg() */
+
+       f = fopen(filename, "r");
+       if (f == NULL)
+               return "unable to open file";
+
+       newargc = *argcp + SOME;
+       newargv = malloc((newargc+1) * sizeof(char *));
+       if (newargv == NULL)
+               return "unable to allocate memory";
+       memcpy(newargv, *argvp, optind * sizeof(char *));
+       room = SOME;
+       next = optind;
+
+       newargv[next] = NULL;
+       wa.pending = NULL;
+       while ((p = getanarg(f, &wa, &newargv[next])) == NULL) {
+               if (room == 0) {
+                       newargc += SOME;
+                       tmp = realloc(newargv, (newargc+1) * sizeof(char *));
+                       if (tmp == NULL) {
+                               p = "out of space for new argv";
+                               break;          /* NOTE BREAK OUT */
+                       }
+                       newargv = tmp;
+                       room += SOME;
+               }
+               next++;
+               room--;
+       }
+       if (p != NULL && !feof(f)) {    /* error of some kind */
+               for (i = optind+1; i <= next; i++)
+                       if (newargv[i] != NULL)
+                               free(newargv[i]);
+               free(newargv);
+               fclose(f);
+               return p;
+       }
+
+       fclose(f);
+       memcpy(newargv + next, *argvp + optind,
+                                       (*argcp+1-optind) * sizeof(char *));
+       *argcp += next - optind;
+       *argvp = newargv;
+       return NULL;
+}
+
+/*
+ - getanarg - get a malloced argument from the file
+ */
+static const char *            /* NULL for success, else string literal */
+getanarg(f, w, linep)
+FILE *f;
+struct work *w;
+char **linep;                  /* where to store pointer if successful */
+{
+       size_t len;
+       char *p;
+       char *endp;
+
+       while (w->pending == NULL) {    /* no pending line */
+               if ((w->line = getline(f, w->buf, sizeof(w->buf))) == NULL)
+                       return "error in line read";    /* caller checks EOF */
+               if (w->line[0] != '#' &&
+                               *(w->line + strspn(w->line, " \t")) != '\0')
+                       w->pending = w->line;
+       }
+
+       if (w->pending == w->line && w->line[0] != '-') {
+               /* fresh plain line */
+               w->pending = NULL;
+               p = w->line;
+               endp = p + strlen(p);
+               if (*p == '"' && endp > p+1 && *(endp-1) == '"') {
+                       p++;
+                       endp--;
+                       *endp = '\0';
+               }
+               if (w->line == w->buf) {
+                       *linep = malloc(endp - p + 1);
+                       if (*linep == NULL)
+                               return "out of memory for new line";
+                       strcpy(*linep, p);
+               } else                  /* getline already malloced it */
+                       *linep = p;
+               return NULL;
+       }
+
+       /* chip off a piece of a pending line */
+       p = w->pending;
+       p += strspn(p, " \t");
+       endp = p + strcspn(p, " \t");
+       len = endp - p;
+       if (*endp != '\0') {
+               *endp++ = '\0';
+               endp += strspn(endp, " \t");
+       }
+       /* endp now points to next real character, or to line-end NUL */
+       *linep = malloc(len + 1);
+       if (*linep == NULL) {
+               if (w->line != w->buf)
+                       free(w->line);
+               return "out of memory for new argument";
+       }
+       strcpy(*linep, p);
+       if (*endp == '\0') {
+               w->pending = NULL;
+               if (w->line != w->buf)
+                       free(w->line);
+       } else
+               w->pending = endp;
+       return NULL;
+}
+
+/*
+ - getline - read a line from the file, trim newline off
+ */
+static char *                  /* pointer to line, NULL for eof/error */
+getline(f, buf, bufsize)
+FILE *f;
+char *buf;                     /* buffer to use, if convenient */
+size_t bufsize;                        /* size of buf */
+{
+       size_t len;
+
+       if (fgets(buf, bufsize, f) == NULL)
+               return NULL;
+       len = strlen(buf);
+
+       if (len < bufsize-1 || buf[bufsize-1] == '\n') {
+               /* it fit */
+               buf[len-1] = '\0';
+               return buf;
+       }
+
+       /* oh crud, buffer overflow */
+       /* for now, to hell with it */
+       return NULL;
+}
+
+
+
+#ifdef TEST
+
+#include <getopt.h>
+
+char usage[] = "Usage: tester [--foo] [--bar] [--optionsfrom file] arg ...";
+struct option opts[] = {
+       "foo",          0,      NULL,   'f',
+       "bar",          0,      NULL,   'b',
+       "builtin",      0,      NULL,   'B',
+       "optionsfrom",  1,      NULL,   '+',
+       "help",         0,      NULL,   'h',
+       "version",      0,      NULL,   'v',
+       0,              0,      NULL,   0,
+};
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       int opt;
+       extern char *optarg;
+       extern int optind;
+       int errflg = 0;
+       const char *p;
+       int i;
+       FILE *errs = NULL;
+
+       while ((opt = getopt_long(argc, argv, "", opts, NULL)) != EOF)
+               switch (opt) {
+               case 'f':
+               case 'b':
+                       break;
+               case 'B':
+                       errs = stderr;
+                       break;
+               case '+':       /* optionsfrom */
+                       p = optionsfrom(optarg, &argc, &argv, optind, errs);
+                       if (p != NULL) {
+                               fprintf(stderr, "%s: optionsfrom error: %s\n",
+                                                               argv[0], p);
+                               exit(1);
+                       }
+                       break;
+               case 'h':       /* help */
+                       printf("%s\n", usage);
+                       exit(0);
+                       break;
+               case 'v':       /* version */
+                       printf("1\n");
+                       exit(0);
+                       break;
+               case '?':
+               default:
+                       errflg = 1;
+                       break;
+               }
+       if (errflg) {
+               fprintf(stderr, "%s\n", usage);
+               exit(2);
+       }
+
+       for (i = 1; i < argc; i++)
+               printf("%d: `%s'\n", i, argv[i]);
+       exit(0);
+}
+
+
+#endif /* TEST */
diff -druN linux-noipsec/net/ipsec/libfreeswan/pfkey.h linux/net/ipsec/libfreeswan/pfkey.h
--- linux-noipsec/net/ipsec/libfreeswan/pfkey.h Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/pfkey.h Tue Oct 10 22:10:19 2000
@@ -0,0 +1,340 @@
+/*
+ * FreeS/WAN specific PF_KEY headers
+ * Copyright (C) 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+#ifndef __NET_IPSEC_PF_KEY_H
+#define __NET_IPSEC_PF_KEY_H
+#ifdef __KERNEL__
+extern void pfkey_proto_init(struct net_proto *pro);
+extern struct proto_ops pfkey_proto_ops;
+typedef struct sock pfkey_sock;
+extern int debug_pfkey;
+
+extern /* void */ int pfkey_init(void);
+extern /* void */ int pfkey_cleanup(void);
+
+extern struct sock *pfkey_sock_list;
+struct socket_list
+{
+       struct socket *socketp;
+       struct socket_list *next;
+};
+extern int pfkey_list_insert_socket(struct socket*, struct socket_list**);
+extern int pfkey_list_remove_socket(struct socket*, struct socket_list**);
+extern struct socket_list *pfkey_open_sockets;
+extern struct socket_list *pfkey_registered_sockets[SADB_SATYPE_MAX+1];
+
+struct supported
+{
+       uint16_t supported_alg_exttype;
+       uint8_t supported_alg_id;
+       uint8_t supported_alg_ivlen;
+       uint16_t supported_alg_minbits;
+       uint16_t supported_alg_maxbits;
+};
+
+extern struct supported_list *pfkey_supported_list[SADB_SATYPE_MAX+1];
+struct supported_list
+{
+       struct supported *supportedp;
+       struct supported_list *next;
+};
+extern int pfkey_list_insert_supported(struct supported*, struct supported_list**);
+extern int pfkey_list_remove_supported(struct supported*, struct supported_list**);
+
+extern uint8_t sadb_satype2proto[];
+
+/*
+#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
+ */
+struct sockaddr_key
+{
+       uint16_t        key_family;     /* PF_KEY */
+       uint16_t        key_pad;        /* not used */
+       uint32_t        key_pid;        /* process ID */
+};
+/*
+#endif */ /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
+ */
+
+struct pfkey_extracted_data
+{
+       struct tdb* tdb;
+       struct tdb* tdb2;
+       struct eroute *eroute;
+};
+
+extern int pfkey_upmsg(struct socket *, struct sadb_msg *);
+extern int pfkey_expire(struct tdb *, int);
+extern int pfkey_acquire(struct tdb *);
+#endif /* __KERNEL__ */
+
+extern uint8_t satype2proto(uint8_t satype);
+extern uint8_t proto2satype(uint8_t proto);
+extern char* proto2name(uint8_t proto);
+
+struct key_opt
+{
+       uint32_t        key_pid;        /* process ID */
+       struct sock     *sk;
+};
+
+#define key_pid(sk) ((struct key_opt*)&((sk)->protinfo))->key_pid
+
+#define IPSEC_PFKEYv2_ALIGN (sizeof(uint64_t)/sizeof(uint8_t))
+#define BITS_PER_OCTET 8
+#define OCTETBITS 8
+#define PFKEYBITS 64
+#define DIVUP(x,y) ((x + y -1) / y) /* divide, rounding upwards */
+#define ALIGN_N(x,y) (DIVUP(x,y) * y) /* align on y boundary */
+
+#define PFKEYv2_MAX_MSGSIZE 4096
+
+/*
+ * PF_KEYv2 permitted and required extensions in and out bitmaps
+ */
+
+extern unsigned int extensions_bitmaps[2/*in/out*/][2/*perm/req*/][SADB_MAX + 1/*ext*/];
+#define EXT_BITS_IN 0
+#define EXT_BITS_OUT 1
+#define EXT_BITS_PERM 0
+#define EXT_BITS_REQ 1
+
+extern void pfkey_extensions_init(struct sadb_ext *extensions[SADB_EXT_MAX + 1]);
+extern void pfkey_extensions_free(struct sadb_ext *extensions[SADB_EXT_MAX + 1]);
+extern void pfkey_msg_free(struct sadb_msg **pfkey_msg);
+
+extern int pfkey_msg_parse(struct sadb_msg *pfkey_msg,
+                          int (*ext_parsers[])(struct sadb_ext* ),
+                          struct sadb_ext **extensions,
+                          int dir);
+
+/*
+ * PF_KEYv2 build function prototypes
+ */
+
+int
+pfkey_msg_hdr_build(struct sadb_ext**  pfkey_ext,
+                   uint8_t             msg_type,
+                   uint8_t             satype,
+                   uint8_t             msg_errno,
+                   uint32_t            seq,
+                   uint32_t            pid);
+
+int
+pfkey_sa_build(struct sadb_ext **      pfkey_ext,
+              uint16_t                 exttype,
+              uint32_t                 spi, /* in network order */
+              uint8_t                  replay_window,
+              uint8_t                  sa_state,
+              uint8_t                  auth,
+              uint8_t                  encrypt,
+              uint32_t                 flags);
+
+int
+pfkey_lifetime_build(struct sadb_ext **        pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           allocations,
+                    uint64_t           bytes,
+                    uint64_t           addtime,
+                    uint64_t           usetime);
+
+int
+pfkey_address_build(struct sadb_ext**  pfkey_ext,
+                   uint16_t            exttype,
+                   uint8_t             proto,
+                   uint8_t             prefixlen,
+                   struct sockaddr*    address);
+
+int
+pfkey_key_build(struct sadb_ext**      pfkey_ext,
+               uint16_t                exttype,
+               uint16_t                key_bits,
+               char*                   key);
+
+int
+pfkey_ident_build(struct sadb_ext**    pfkey_ext,
+                 uint16_t              exttype,
+                 uint16_t              ident_type,
+                 uint64_t              ident_id,
+                 char*                 ident_string);
+
+int
+pfkey_sens_build(struct sadb_ext**     pfkey_ext,
+                uint32_t               dpd,
+                uint8_t                sens_level,
+                uint8_t                sens_len,
+                uint64_t*              sens_bitmap,
+                uint8_t                integ_level,
+                uint8_t                integ_len,
+                uint64_t*              integ_bitmap);
+
+int
+pfkey_prop_build(struct sadb_ext**     pfkey_ext,
+                uint8_t                replay,
+                unsigned int           comb_num,
+                struct sadb_comb*      comb);
+
+int
+pfkey_supported_build(struct sadb_ext**        pfkey_ext,
+                     uint16_t          exttype,
+                     unsigned int      alg_num,
+                     struct sadb_alg*  alg);
+
+int
+pfkey_spirange_build(struct sadb_ext** pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           min,
+                    uint32_t           max);
+
+int
+pfkey_x_kmprivate_build(struct sadb_ext**      pfkey_ext);
+
+int
+pfkey_x_satype_build(struct sadb_ext** pfkey_ext,
+                    uint8_t            satype);
+
+int
+pfkey_x_debug_build(struct sadb_ext**  pfkey_ext,
+                   uint32_t            tunnel,
+                   uint32_t            netlink,
+                   uint32_t            xform,
+                   uint32_t            eroute,
+                   uint32_t            spi,
+                   uint32_t            radij,
+                   uint32_t            esp,
+                   uint32_t            ah,
+                   uint32_t            rcv,
+                   uint32_t            pfkey,
+                   uint32_t            ipcomp,
+                   uint32_t            verbose);
+
+int
+pfkey_msg_build(struct sadb_msg**      pfkey_msg,
+               struct sadb_ext*        extensions[],
+               int                     dir);
+
+#endif /* __NET_IPSEC_PF_KEY_H */
+
+/*
+ * $Log$
+ * Revision 1.28  2000/10/10 20:10:19  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.27  2000/09/21 04:20:45  rgb
+ * Fixed array size off-by-one error.  (Thanks Svenning!)
+ *
+ * Revision 1.26  2000/09/12 03:26:05  rgb
+ * Added pfkey_acquire prototype.
+ *
+ * Revision 1.25  2000/09/08 19:21:28  rgb
+ * Fix pfkey_prop_build() parameter to be only single indirection.
+ *
+ * Revision 1.24  2000/09/01 18:46:42  rgb
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ *
+ * Revision 1.23  2000/08/27 01:55:26  rgb
+ * Define OCTETBITS and PFKEYBITS to avoid using 'magic' numbers in code.
+ *
+ * Revision 1.22  2000/08/20 21:39:23  rgb
+ * Added kernel prototypes for kernel funcitions pfkey_upmsg() and
+ * pfkey_expire().
+ *
+ * Revision 1.21  2000/08/15 17:29:23  rgb
+ * Fixes from SZI to untested pfkey_prop_build().
+ *
+ * Revision 1.20  2000/05/10 20:14:19  rgb
+ * Fleshed out sensitivity, proposal and supported extensions.
+ *
+ * Revision 1.19  2000/03/16 14:07:23  rgb
+ * Renamed ALIGN macro to avoid fighting with others in kernel.
+ *
+ * Revision 1.18  2000/01/22 23:24:06  rgb
+ * Added prototypes for proto2satype(), satype2proto() and proto2name().
+ *
+ * Revision 1.17  2000/01/21 06:26:59  rgb
+ * Converted from double tdb arguments to one structure (extr)
+ * containing pointers to all temporary information structures.
+ * Added klipsdebug switching capability.
+ * Dropped unused argument to pfkey_x_satype_build().
+ *
+ * Revision 1.16  1999/12/29 21:17:41  rgb
+ * Changed pfkey_msg_build() I/F to include a struct sadb_msg**
+ * parameter for cleaner manipulation of extensions[] and to guard
+ * against potential memory leaks.
+ * Changed the I/F to pfkey_msg_free() for the same reason.
+ *
+ * Revision 1.15  1999/12/09 23:12:54  rgb
+ * Added macro for BITS_PER_OCTET.
+ * Added argument to pfkey_sa_build() to do eroutes.
+ *
+ * Revision 1.14  1999/12/08 20:33:25  rgb
+ * Changed sa_family_t to uint16_t for 2.0.xx compatibility.
+ *
+ * Revision 1.13  1999/12/07 19:53:40  rgb
+ * Removed unused first argument from extension parsers.
+ * Changed __u* types to uint* to avoid use of asm/types.h and
+ * sys/types.h in userspace code.
+ * Added function prototypes for pfkey message and extensions
+ * initialisation and cleanup.
+ *
+ * Revision 1.12  1999/12/01 22:19:38  rgb
+ * Change pfkey_sa_build to accept an SPI in network byte order.
+ *
+ * Revision 1.11  1999/11/27 11:55:26  rgb
+ * Added extern sadb_satype2proto to enable moving protocol lookup table
+ * to lib/pfkey_v2_parse.c.
+ * Delete unused, moved typedefs.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ *
+ * Revision 1.10  1999/11/23 22:29:21  rgb
+ * This file has been moved in the distribution from klips/net/ipsec to
+ * lib.
+ * Add macros for dealing with alignment and rounding up more opaquely.
+ * The uint<n>_t type defines have been moved to freeswan.h to avoid
+ * chicken-and-egg problems.
+ * Add macros for dealing with alignment and rounding up more opaque.
+ * Added prototypes for using extention header bitmaps.
+ * Added prototypes of all the build functions.
+ *
+ * Revision 1.9  1999/11/20 21:59:48  rgb
+ * Moved socketlist type declarations and prototypes for shared use.
+ * Slightly modified scope of sockaddr_key declaration.
+ *
+ * Revision 1.8  1999/11/17 14:34:25  rgb
+ * Protect sa_family_t from being used in userspace with GLIBC<2.
+ *
+ * Revision 1.7  1999/10/27 19:40:35  rgb
+ * Add a maximum PFKEY packet size macro.
+ *
+ * Revision 1.6  1999/10/26 16:58:58  rgb
+ * Created a sockaddr_key and key_opt socket extension structures.
+ *
+ * Revision 1.5  1999/06/10 05:24:41  rgb
+ * Renamed variables to reduce confusion.
+ *
+ * Revision 1.4  1999/04/29 15:21:11  rgb
+ * Add pfkey support to debugging.
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ */
diff -druN linux-noipsec/net/ipsec/libfreeswan/pfkey_v2_build.c linux/net/ipsec/libfreeswan/pfkey_v2_build.c
--- linux-noipsec/net/ipsec/libfreeswan/pfkey_v2_build.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/pfkey_v2_build.c        Fri Nov 17 19:10:30 2000
@@ -0,0 +1,1265 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_parser.c.
+ */
+
+char pfkey_v2_build_c_version[] = "$Id$";
+
+/*
+ * Some ugly stuff to allow consistent debugging code for use in the
+ * kernel and in user space
+*/
+
+#ifdef __KERNEL__
+
+# include <linux/kernel.h>  /* for printk */
+
+# include <linux/malloc.h> /* kmalloc() */
+# include <linux/errno.h>  /* error codes */
+# include <linux/types.h>  /* size_t */
+# include <linux/interrupt.h> /* mark_bh */
+
+# include <linux/netdevice.h>   /* struct device, and other headers */
+# include <linux/etherdevice.h> /* eth_type_trans */
+# include <linux/ip.h>          /* struct iphdr */ 
+# if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#  include <linux/ipv6.h>        /* struct ipv6hdr */
+# endif /* if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+extern int debug_pfkey;
+
+# define MALLOC(size) kmalloc(size, GFP_ATOMIC)
+# define FREE(obj) kfree(obj)
+#else /* __KERNEL__ */
+
+# include <sys/types.h>
+# include <linux/types.h>
+# include <linux/errno.h>
+# include <malloc.h>
+# include <string.h> /* memset */
+
+# include "../pluto/constants.h" 
+# include "../pluto/defs.h"  /* for PRINTF_LIKE */
+# include "../pluto/log.h"  /* for debugging and DBG_log */
+
+extern unsigned int debugging;  /* bits selecting what to report */
+unsigned int pfkey_lib_debug = 0;
+
+/* #define PLUTO */
+
+# ifdef PLUTO
+#  define DEBUGGING(args...)  { DBG_log("pfkey_lib_debug:" args);  }
+# else
+#  define DEBUGGING(args...)  if(pfkey_lib_debug) { printf("pfkey_lib_debug:" args); } else { ; }
+# endif
+# define MALLOC(size) malloc(size)
+# define FREE(obj) free(obj)
+#endif /* __KERNEL__ */
+
+#include <freeswan.h>
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef __KERNEL__
+# include "../radij.h"  /* rd_nodes */
+# include "../ipsec_encap.h"  /* sockaddr_encap */
+# include "../ipsec_netlink.h"  /* KLIPS_PRINT */
+# define DEBUGGING(args...) \
+         KLIPS_PRINT(debug_pfkey, "klips_debug:" args)
+/*         ((debug_pfkey) ? printk(KERN_INFO "klips_debug:" format , ## args) : 0) */
+#endif /* __KERNEL__ */
+
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+void
+pfkey_extensions_init(struct sadb_ext *extensions[SADB_EXT_MAX + 1])
+{
+       int i;
+       
+       for (i = 0; i != SADB_EXT_MAX + 1; i++) {
+               extensions[i] = NULL;
+       }
+}
+
+void
+pfkey_extensions_free(struct sadb_ext *extensions[SADB_EXT_MAX + 1])
+{
+       int i;
+       
+       if(!extensions) {
+               return;
+       }
+
+       if(extensions[0]) {
+               memset(extensions[0], 0, sizeof(struct sadb_msg));
+               FREE(extensions[0]);
+               extensions[0] = NULL;
+       }
+       
+       for (i = 1; i != SADB_EXT_MAX + 1; i++) {
+               if(extensions[i]) {
+                       memset(extensions[i], 0, extensions[i]->sadb_ext_len * IPSEC_PFKEYv2_ALIGN);
+                       FREE(extensions[i]);
+                       extensions[i] = NULL;
+               }
+       }
+}
+
+void
+pfkey_msg_free(struct sadb_msg **pfkey_msg)
+{
+       if(*pfkey_msg) {
+               memset(*pfkey_msg, 0, (*pfkey_msg)->sadb_msg_len * IPSEC_PFKEYv2_ALIGN);
+               FREE(*pfkey_msg);
+               *pfkey_msg = NULL;
+       }
+}
+
+/* Default extension builders taken from the KLIPS code */
+
+int
+pfkey_msg_hdr_build(struct sadb_ext**  pfkey_ext,
+                   uint8_t             msg_type,
+                   uint8_t             satype,
+                   uint8_t             msg_errno,
+                   uint32_t            seq,
+                   uint32_t            pid)
+{
+       int error = 0;
+       struct sadb_msg *pfkey_msg = (struct sadb_msg *)*pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_msg_hdr_build:\n");
+       DEBUGGING(
+               "pfkey_msg_hdr_build: on_entry &pfkey_ext=%p pfkey_ext=%p *pfkey_ext=%p.\n",
+               &pfkey_ext,
+               pfkey_ext,
+               *pfkey_ext);
+       /* sanity checks... */
+       if(pfkey_msg) {
+               DEBUGGING(
+                       "pfkey_msg_hdr_build:why is pfkey_msg already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(!msg_type) {
+               DEBUGGING(
+                       "pfkey_msg_hdr_build: msg type not set, must be non-zero..\n");
+               SENDERR(EINVAL);
+       }
+
+       if(msg_type > SADB_MAX) {
+               DEBUGGING(
+                       "pfkey_msg_hdr_build: msg type too large:%d.\n",
+                       msg_type);
+               SENDERR(EINVAL);
+       }
+
+       if(satype > SADB_SATYPE_MAX) {
+               DEBUGGING(
+                       "pfkey_msg_hdr_build: satype %d > max %d\n", 
+                       satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_msg = (struct sadb_msg*)
+            MALLOC(sizeof(struct sadb_msg)))) {
+               DEBUGGING(
+                       "pfkey_msg_hdr_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_msg, 0, sizeof(struct sadb_msg));
+
+       pfkey_msg->sadb_msg_len = sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_msg->sadb_msg_type = msg_type;
+       pfkey_msg->sadb_msg_satype = satype;
+
+       pfkey_msg->sadb_msg_version = PF_KEY_V2;
+       pfkey_msg->sadb_msg_errno = msg_errno;
+       pfkey_msg->sadb_msg_reserved = 0;
+       pfkey_msg->sadb_msg_seq = seq;
+       pfkey_msg->sadb_msg_pid = pid;
+       DEBUGGING(
+               "pfkey_msg_hdr_build: on_exit &pfkey_ext=%p pfkey_ext=%p *pfkey_ext=%p.\n",
+               &pfkey_ext,
+               pfkey_ext,
+               *pfkey_ext);
+errlab:
+       return error;
+}      
+
+int
+pfkey_sa_build(struct sadb_ext **      pfkey_ext,
+              uint16_t                 exttype,
+              uint32_t                 spi, /* in network order */
+              uint8_t                  replay_window,
+              uint8_t                  sa_state,
+              uint8_t                  auth,
+              uint8_t                  encrypt,
+              uint32_t                 flags)
+{
+       int error = 0;
+       struct sadb_sa *pfkey_sa = (struct sadb_sa *)*pfkey_ext;
+
+       DEBUGGING(
+                   "pfkey_sa_build: spi=%08x replay=%d sa_state=%d auth=%d encrypt=%d flags=%d\n",
+                   ntohl(spi), /* in network order */
+                   replay_window,
+                   sa_state,
+                   auth,
+                   encrypt,
+                   flags);
+       /* sanity checks... */
+       if(pfkey_sa) {
+               DEBUGGING(
+                       "pfkey_sa_build:why is pfkey_sa already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(exttype != SADB_EXT_SA &&
+          exttype != SADB_X_EXT_SA2) {
+               DEBUGGING(
+                       "pfkey_sa_build: invalid exttype=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if(replay_window > 64) {
+               DEBUGGING(
+                       "pfkey_sa_build: replay window size: %d"
+                       " -- must be 0 <= size <= 64\n",
+                       replay_window);
+               SENDERR(EINVAL);
+       }
+
+       if(auth > SADB_AALG_MAX) {
+               DEBUGGING(
+                       "pfkey_sa_build: auth=%d > SADB_AALG_MAX=%d.\n",
+                       auth,
+                       SADB_AALG_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(encrypt > SADB_EALG_MAX) {
+               DEBUGGING(
+                       "pfkey_sa_build: encrypt=%d > SADB_EALG_MAX=%d.\n",
+                       encrypt,
+                       SADB_EALG_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(sa_state > SADB_SASTATE_MAX) {
+               DEBUGGING(
+                       "pfkey_sa_build: sa_state=%d exceeds MAX=%d.\n",
+                       sa_state,
+                       SADB_SASTATE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(sa_state == SADB_SASTATE_DEAD) {
+               DEBUGGING(
+                       "pfkey_sa_build: sa_state=%d is DEAD=%d is not allowed.\n",
+                       sa_state,
+                       SADB_SASTATE_DEAD);
+               SENDERR(EINVAL);
+       }
+       
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_sa = (struct sadb_sa*)
+            MALLOC(sizeof(struct sadb_sa)))) {
+               DEBUGGING(
+                       "pfkey_sa_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_sa, 0, sizeof(struct sadb_sa));
+       
+       pfkey_sa->sadb_sa_len = sizeof(*pfkey_sa) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_sa->sadb_sa_exttype = exttype;
+       pfkey_sa->sadb_sa_spi = spi;
+       pfkey_sa->sadb_sa_replay = replay_window;
+       pfkey_sa->sadb_sa_state = sa_state;
+       pfkey_sa->sadb_sa_auth = auth;
+       pfkey_sa->sadb_sa_encrypt = encrypt;
+       pfkey_sa->sadb_sa_flags = flags;
+
+errlab:
+       return error;
+}      
+
+int
+pfkey_lifetime_build(struct sadb_ext **        pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           allocations,
+                    uint64_t           bytes,
+                    uint64_t           addtime,
+                    uint64_t           usetime)
+{
+       int error = 0;
+       struct sadb_lifetime *pfkey_lifetime = (struct sadb_lifetime *)*pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_lifetime_build:\n");
+       /* sanity checks... */
+       if(pfkey_lifetime) {
+               DEBUGGING(
+                       "pfkey_lifetime_build:why is pfkey_lifetime already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(exttype != SADB_EXT_LIFETIME_CURRENT &&
+          exttype != SADB_EXT_LIFETIME_HARD &&
+          exttype != SADB_EXT_LIFETIME_SOFT) {
+               DEBUGGING(
+                       "pfkey_lifetime_build: invalid exttype=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_lifetime = (struct sadb_lifetime*)
+            MALLOC(sizeof(struct sadb_lifetime)))) {
+               DEBUGGING(
+                       "pfkey_lifetime_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_lifetime, 0, sizeof(struct sadb_lifetime));
+
+       pfkey_lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_lifetime->sadb_lifetime_exttype = exttype;
+       pfkey_lifetime->sadb_lifetime_allocations = allocations;
+       pfkey_lifetime->sadb_lifetime_bytes = bytes;
+       pfkey_lifetime->sadb_lifetime_addtime = addtime;
+       pfkey_lifetime->sadb_lifetime_usetime = usetime;
+
+errlab:
+       return error;
+}
+
+int
+pfkey_address_build(struct sadb_ext**  pfkey_ext,
+                   uint16_t            exttype,
+                   uint8_t             proto,
+                   uint8_t             prefixlen,
+                   struct sockaddr*    address)
+{
+       int error = 0;
+       int saddr_len = 0;
+       char ipaddr_txt[ADDRTOT_BUF];
+       struct sadb_address *pfkey_address = (struct sadb_address *)*pfkey_ext;
+       
+       DEBUGGING(
+               "pfkey_address_build: exttype=%d proto=%d prefixlen=%d\n", exttype, proto, prefixlen);
+       /* sanity checks... */
+       if(pfkey_address) {
+               DEBUGGING(
+                       "pfkey_address_build:why is pfkey_address already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if (!address)  {
+                       DEBUGGING("pfkey_address_build: address is NULL\n");
+                       SENDERR(EINVAL);
+       }
+       
+       switch(exttype) {       
+       case SADB_EXT_ADDRESS_SRC:
+       case SADB_EXT_ADDRESS_DST:
+       case SADB_EXT_ADDRESS_PROXY:
+       case SADB_X_EXT_ADDRESS_DST2:
+       case SADB_X_EXT_ADDRESS_SRC_FLOW:
+       case SADB_X_EXT_ADDRESS_DST_FLOW:
+       case SADB_X_EXT_ADDRESS_SRC_MASK:
+       case SADB_X_EXT_ADDRESS_DST_MASK:
+               break;
+       default:
+               DEBUGGING( 
+                       "pfkey_address_build: unrecognised ext_type=%d.\n", 
+                       exttype); 
+               SENDERR(EINVAL); 
+       }
+
+       switch(address->sa_family) {
+       case AF_INET:
+               DEBUGGING(
+                       "pfkey_address_build: found address family AF_INET.\n");
+               saddr_len = sizeof(struct sockaddr_in);
+               sprintf(ipaddr_txt, "%d.%d.%d.%d"
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >>  0) & 0xFF
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >>  8) & 0xFF
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >> 16) & 0xFF
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >> 24) & 0xFF);
+               break;
+       case AF_INET6:
+               DEBUGGING(
+                       "pfkey_address_build: found address family AF_INET6.\n");
+               saddr_len = sizeof(struct sockaddr_in6);
+               sprintf(ipaddr_txt, "%x:%x:%x:%x:%x:%x:%x:%x"
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[0])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[1])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[2])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[3])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[4])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[5])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[6])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[7]));
+               break;
+       default:
+               DEBUGGING(
+                       "pfkey_address_build: address->sa_family=%d not supported.\n",
+                       address->sa_family);
+               SENDERR(EPFNOSUPPORT);
+       }
+
+       DEBUGGING(
+               "pfkey_address_build: found address=%s.\n",
+               ipaddr_txt);
+       if(prefixlen != 0) {
+               DEBUGGING(
+                       "pfkey_address_build: address prefixes not supported yet.\n");
+               SENDERR(EAFNOSUPPORT); /* not supported yet */
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_address = (struct sadb_address*)
+            MALLOC(ALIGN_N(sizeof(struct sadb_address) + saddr_len, IPSEC_PFKEYv2_ALIGN) ))) {
+               DEBUGGING(
+                       "pfkey_lifetime_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_address,
+              0,
+              ALIGN_N(sizeof(struct sadb_address) + saddr_len,
+                    IPSEC_PFKEYv2_ALIGN));
+              
+       pfkey_address->sadb_address_len = DIVUP(sizeof(struct sadb_address) + saddr_len,
+                                               IPSEC_PFKEYv2_ALIGN);
+       
+       pfkey_address->sadb_address_exttype = exttype;
+       pfkey_address->sadb_address_proto = proto;
+       pfkey_address->sadb_address_prefixlen = prefixlen;
+       pfkey_address->sadb_address_reserved = 0;
+
+       memcpy((char*)pfkey_address + sizeof(struct sadb_address),
+              address,
+              saddr_len);
+
+#if 0
+       for(i = 0; i < sizeof(struct sockaddr_in) - offsetof(struct sockaddr_in, sin_zero); i++) {
+               pfkey_address_s_ska.sin_zero[i] = 0;
+       }
+#endif
+       DEBUGGING(
+               "pfkey_address_build: successful.\n");
+
+ errlab:
+       return error;
+}
+
+int
+pfkey_key_build(struct sadb_ext**      pfkey_ext,
+               uint16_t                exttype,
+               uint16_t                key_bits,
+               char*                   key)
+{
+       int error = 0;
+       struct sadb_key *pfkey_key = (struct sadb_key *)*pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_key_build:\n");
+       /* sanity checks... */
+       if(pfkey_key) {
+               DEBUGGING(
+                       "pfkey_key_build:why is pfkey_key already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(!key_bits) {
+               DEBUGGING(
+                       "pfkey_key_build: key_bits is zero, it must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if( !((exttype == SADB_EXT_KEY_AUTH) || (exttype == SADB_EXT_KEY_ENCRYPT))) {
+               DEBUGGING(
+                       "pfkey_key_build: unsupported extension type=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_key = (struct sadb_key*)
+            MALLOC(sizeof(struct sadb_key) +
+                                   DIVUP(key_bits, 64) * IPSEC_PFKEYv2_ALIGN))) {
+               DEBUGGING(
+                       "pfkey_key_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_key,
+              0,
+              sizeof(struct sadb_key) +
+              DIVUP(key_bits, 64) * IPSEC_PFKEYv2_ALIGN);
+       
+       pfkey_key->sadb_key_len = DIVUP(sizeof(struct sadb_key) * IPSEC_PFKEYv2_ALIGN + key_bits,
+                                       64);
+       pfkey_key->sadb_key_exttype = exttype;
+       pfkey_key->sadb_key_bits = key_bits;
+       pfkey_key->sadb_key_reserved = 0;
+       memcpy((char*)pfkey_key + sizeof(struct sadb_key),
+              key,
+              DIVUP(key_bits, 8));
+
+errlab:
+       return error;
+}
+
+int
+pfkey_ident_build(struct sadb_ext**    pfkey_ext,
+                 uint16_t              exttype,
+                 uint16_t              ident_type,
+                 uint64_t              ident_id,
+                 char*                 ident_string)
+{
+       int error = 0;
+       struct sadb_ident *pfkey_ident = (struct sadb_ident *)*pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_ident_build:\n");
+       /* sanity checks... */
+       if(pfkey_ident) {
+               DEBUGGING(
+                       "pfkey_ident_build:why is pfkey_ident already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if( ! ((exttype == SADB_EXT_IDENTITY_SRC) ||
+              (exttype == SADB_EXT_IDENTITY_DST))) {
+               DEBUGGING(
+                       "pfkey_ident_build: unsupported extension type=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if((ident_type == SADB_IDENTTYPE_RESERVED)) {
+               DEBUGGING(
+                       "pfkey_ident_build: ident_type must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(ident_type > SADB_IDENTTYPE_MAX) {
+               DEBUGGING(
+                       "pfkey_ident_build: identtype=%d out of range.\n",
+                       ident_type);
+               SENDERR(EINVAL);
+       }
+
+       if(((ident_type == SADB_IDENTTYPE_PREFIX) ||
+           (ident_type == SADB_IDENTTYPE_FQDN)) &&
+          !ident_string) {
+               DEBUGGING(
+                       "pfkey_ident_build: string required to allocate size of extension.\n");
+               SENDERR(EINVAL);
+       }
+       
+#if 0
+       if((ident_type == SADB_IDENTTYPE_USERFQDN) ) {
+       }
+#endif
+           
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_ident = (struct sadb_ident*)
+            MALLOC(ALIGN_N(sizeof(struct sadb_key) + strlen(ident_string), IPSEC_PFKEYv2_ALIGN)))) {
+               DEBUGGING(
+                       "pfkey_ident_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_ident,
+              0,
+              ALIGN_N(sizeof(struct sadb_ident) + strlen(ident_string),
+                    IPSEC_PFKEYv2_ALIGN));
+       
+       pfkey_ident->sadb_ident_len = DIVUP(sizeof(struct sadb_ident) + strlen(ident_string),
+                                           IPSEC_PFKEYv2_ALIGN);
+       
+       pfkey_ident->sadb_ident_exttype = exttype;
+       pfkey_ident->sadb_ident_type = ident_type;
+       pfkey_ident->sadb_ident_reserved = 0;
+       pfkey_ident->sadb_ident_id = ident_id;
+       memcpy((char*)pfkey_ident + sizeof(struct sadb_ident),
+              ident_string,
+              strlen(ident_string));
+
+       /* string terminator/padding must be zero */
+       /* Which one is better, I don't know... */
+#if 0
+       for(i = strlen(ident_string);
+           i < ALIGN_N(sizeof(struct sadb_ident) + strlen(ident_string), IPSEC_PFKEYv2_ALIGN);
+           i++) {
+               ((char*)pfkey_ident)[i] = 0;
+       }
+#else
+       memset(((char*)pfkey_ident) + sizeof(struct sadb_ident) + strlen(ident_string),
+              0,
+              ALIGN_N(sizeof(struct sadb_ident) + strlen(ident_string), IPSEC_PFKEYv2_ALIGN) -
+              sizeof(struct sadb_ident) + strlen(ident_string));
+#endif
+
+errlab:
+       return error;
+}
+
+int
+pfkey_sens_build(struct sadb_ext**     pfkey_ext,
+                uint32_t               dpd,
+                uint8_t                sens_level,
+                uint8_t                sens_len,
+                uint64_t*              sens_bitmap,
+                uint8_t                integ_level,
+                uint8_t                integ_len,
+                uint64_t*              integ_bitmap)
+{
+       int error = 0;
+       struct sadb_sens *pfkey_sens = (struct sadb_sens *)*pfkey_ext;
+       int i;
+       uint64_t* bitmap;
+
+       DEBUGGING(
+               "pfkey_sens_build:\n");
+       /* sanity checks... */
+       if(pfkey_sens) {
+               DEBUGGING(
+                       "pfkey_sens_build:why is pfkey_sens already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(
+               "pfkey_sens_build: Sorry, I can't build exttype=%d yet.\n",
+               (*pfkey_ext)->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_sens = (struct sadb_sens*)
+            MALLOC(sizeof(struct sadb_sens) +
+                   (sens_len + integ_len) * sizeof(uint64_t)))) {
+               DEBUGGING(
+                       "pfkey_sens_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_sens,
+              0,
+              sizeof(struct sadb_sens) +
+              (sens_len + integ_len) * sizeof(uint64_t));
+       
+       pfkey_sens->sadb_sens_len = (sizeof(struct sadb_sens) +
+                   (sens_len + integ_len) * sizeof(uint64_t)) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_sens->sadb_sens_exttype = SADB_EXT_SENSITIVITY;
+       pfkey_sens->sadb_sens_dpd = dpd;
+       pfkey_sens->sadb_sens_sens_level = sens_level;
+       pfkey_sens->sadb_sens_sens_len = sens_len;
+       pfkey_sens->sadb_sens_integ_level = integ_level;
+       pfkey_sens->sadb_sens_integ_len = integ_len;
+       pfkey_sens->sadb_sens_reserved = 0;
+
+       bitmap = (uint64_t*)((char*)pfkey_ext + sizeof(struct sadb_sens));
+       for(i = 0; i < sens_len; i++) {
+               *bitmap = sens_bitmap[i];
+               bitmap++;
+       }
+       for(i = 0; i < integ_len; i++) {
+               *bitmap = integ_bitmap[i];
+               bitmap++;
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_prop_build(struct sadb_ext**     pfkey_ext,
+                uint8_t                replay,
+                unsigned int           comb_num,
+                struct sadb_comb*      comb)
+{
+       int error = 0;
+       int i;
+       struct sadb_prop *pfkey_prop = (struct sadb_prop *)*pfkey_ext;
+       struct sadb_comb *combp;
+
+       DEBUGGING(
+               "pfkey_prop_build:\n");
+       /* sanity checks... */
+       if(pfkey_prop) {
+               DEBUGGING(
+                       "pfkey_prop_build:why is pfkey_prop already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_prop = (struct sadb_prop*)
+            MALLOC(sizeof(struct sadb_prop) +
+                   comb_num * sizeof(struct sadb_comb)))) {
+               DEBUGGING(
+                       "pfkey_prop_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_prop,
+              0,
+              sizeof(struct sadb_prop) +
+                   comb_num * sizeof(struct sadb_comb));
+       
+       pfkey_prop->sadb_prop_len = (sizeof(struct sadb_prop) +
+                   comb_num * sizeof(struct sadb_comb)) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
+       pfkey_prop->sadb_prop_replay = replay;
+
+       for(i=0; i<3; i++) {
+               pfkey_prop->sadb_prop_reserved[i] = 0;
+       }
+
+       combp = (struct sadb_comb*)((char*)*pfkey_ext + sizeof(struct sadb_prop));
+       for(i = 0; i < comb_num; i++) {
+               memcpy (combp, &(comb[i]), sizeof(struct sadb_comb));
+               combp++;
+       }
+
+#if 0
+  uint8_t sadb_comb_auth;
+  uint8_t sadb_comb_encrypt;
+  uint16_t sadb_comb_flags;
+  uint16_t sadb_comb_auth_minbits;
+  uint16_t sadb_comb_auth_maxbits;
+  uint16_t sadb_comb_encrypt_minbits;
+  uint16_t sadb_comb_encrypt_maxbits;
+  uint32_t sadb_comb_reserved;
+  uint32_t sadb_comb_soft_allocations;
+  uint32_t sadb_comb_hard_allocations;
+  uint64_t sadb_comb_soft_bytes;
+  uint64_t sadb_comb_hard_bytes;
+  uint64_t sadb_comb_soft_addtime;
+  uint64_t sadb_comb_hard_addtime;
+  uint64_t sadb_comb_soft_usetime;
+  uint64_t sadb_comb_hard_usetime;
+#endif
+errlab:
+       return error;
+}
+
+int
+pfkey_supported_build(struct sadb_ext**        pfkey_ext,
+                     uint16_t          exttype,
+                     unsigned int      alg_num,
+                     struct sadb_alg*  alg)
+{
+       int error = 0;
+       unsigned int i;
+       struct sadb_supported *pfkey_supported = (struct sadb_supported *)*pfkey_ext;
+       struct sadb_alg *pfkey_alg;
+
+       /* sanity checks... */
+       if(pfkey_supported) {
+               DEBUGGING(
+                       "pfkey_supported_build:why is pfkey_supported already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if( !((exttype == SADB_EXT_SUPPORTED_AUTH) || (exttype == SADB_EXT_SUPPORTED_ENCRYPT))) {
+               DEBUGGING(
+                       "pfkey_supported_build: unsupported extension type=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_supported = (struct sadb_supported*)
+            MALLOC(sizeof(struct sadb_supported) +
+                                              alg_num *
+                                              sizeof(struct sadb_alg)))) {
+               DEBUGGING(
+                       "pfkey_supported_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_supported,
+              0,
+              sizeof(struct sadb_supported) +
+                                              alg_num *
+                                              sizeof(struct sadb_alg));
+       
+       pfkey_supported->sadb_supported_len = (sizeof(struct sadb_supported) +
+                                              alg_num *
+                                              sizeof(struct sadb_alg)) /
+                                               IPSEC_PFKEYv2_ALIGN;
+       pfkey_supported->sadb_supported_exttype = exttype;
+       pfkey_supported->sadb_supported_reserved = 0;
+
+       pfkey_alg = (struct sadb_alg*)((char*)pfkey_supported + sizeof(struct sadb_supported));
+       for(i = 0; i < alg_num; i++) {
+               memcpy (pfkey_alg, &(alg[i]), sizeof(struct sadb_alg));
+               pfkey_alg->sadb_alg_reserved = 0;
+               pfkey_alg++;
+       }
+       
+#if 0
+       DEBUGGING(
+               "pfkey_supported_build: Sorry, I can't build exttype=%d yet.\n",
+               (*pfkey_ext)->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+  uint8_t sadb_alg_id;
+  uint8_t sadb_alg_ivlen;
+  uint16_t sadb_alg_minbits;
+  uint16_t sadb_alg_maxbits;
+  uint16_t sadb_alg_reserved;
+#endif
+errlab:
+       return error;
+}
+
+int
+pfkey_spirange_build(struct sadb_ext** pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           min, /* in network order */
+                    uint32_t           max) /* in network order */
+{
+       int error = 0;
+       struct sadb_spirange *pfkey_spirange = (struct sadb_spirange *)*pfkey_ext;
+       
+       /* sanity checks... */
+       if(pfkey_spirange) {
+               DEBUGGING(
+                       "pfkey_spirange_build:why is pfkey_spirange already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+        if(ntohl(max) < ntohl(min)) {
+               DEBUGGING(
+                       "pfkey_spirange_build: minspi=%08x must be < maxspi=%08x.\n",
+                       ntohl(min),
+                       ntohl(max));
+                SENDERR(EINVAL);
+        }
+       
+       if(ntohl(min) <= 255) {
+               DEBUGGING(
+                       "pfkey_spirange_build: minspi=%08x must be > 255.\n",
+                       ntohl(min));
+               SENDERR(EEXIST);
+       }
+       
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_spirange = (struct sadb_spirange*)
+            MALLOC(sizeof(struct sadb_spirange)))) {
+               DEBUGGING(
+                       "pfkey_spirange_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_spirange,
+              0,
+              sizeof(struct sadb_spirange));
+       
+        pfkey_spirange->sadb_spirange_len = sizeof(struct sadb_spirange) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_spirange->sadb_spirange_exttype = SADB_EXT_SPIRANGE;
+       pfkey_spirange->sadb_spirange_min = min;
+       pfkey_spirange->sadb_spirange_max = max;
+       pfkey_spirange->sadb_spirange_reserved = 0;
+ errlab:
+       return error;
+}
+
+int
+pfkey_x_kmprivate_build(struct sadb_ext**      pfkey_ext)
+{
+       int error = 0;
+       struct sadb_x_kmprivate *pfkey_x_kmprivate = (struct sadb_x_kmprivate *)*pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_x_kmprivate) {
+               DEBUGGING(
+                       "pfkey_x_kmprivate_build:why is pfkey_x_kmprivate already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       pfkey_x_kmprivate->sadb_x_kmprivate_reserved = 0;
+
+       DEBUGGING(
+               "pfkey_x_kmprivate_build: Sorry, I can't build exttype=%d yet.\n",
+               (*pfkey_ext)->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+       if(!(*pfkey_ext = (struct sadb_ext*)
+            pfkey_x_kmprivate = (struct sadb_x_kmprivate*)
+            MALLOC(sizeof(struct sadb_x_kmprivate)))) {
+               DEBUGGING(
+                       "pfkey_x_kmprivate_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_x_kmprivate,
+              0,
+              sizeof(struct sadb_x_kmprivate));
+       
+        pfkey_x_kmprivate->sadb_x_kmprivate_len =
+               sizeof(struct sadb_x_kmprivate) / IPSEC_PFKEYv2_ALIGN;
+
+        pfkey_x_kmprivate->sadb_x_kmprivate_exttype = SADB_X_EXT_KMPRIVATE;
+        pfkey_x_kmprivate->sadb_x_kmprivate_reserved = 0;
+errlab:
+       return error;
+}
+
+int
+pfkey_x_satype_build(struct sadb_ext** pfkey_ext,
+                    uint8_t            satype)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_satype *pfkey_x_satype = (struct sadb_x_satype *)*pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_x_satype_build:\n");
+       /* sanity checks... */
+       if(pfkey_x_satype) {
+               DEBUGGING(
+                       "pfkey_x_satype_build:why is pfkey_x_satype already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(!satype) {
+               DEBUGGING(
+                       "pfkey_x_satype_build: SA type not set, must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(satype > SADB_SATYPE_MAX) {
+               DEBUGGING(
+                       "pfkey_x_satype_build: satype %d > max %d\n", 
+                       satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(!(*pfkey_ext = (struct sadb_ext*)pfkey_x_satype = (struct sadb_x_satype*)
+            MALLOC(sizeof(struct sadb_x_satype)))) {
+               DEBUGGING(
+                       "pfkey_x_satype_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_x_satype,
+              0,
+              sizeof(struct sadb_x_satype));
+       
+        pfkey_x_satype->sadb_x_satype_len = sizeof(struct sadb_x_satype) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_x_satype->sadb_x_satype_exttype = SADB_X_EXT_SATYPE2;
+       pfkey_x_satype->sadb_x_satype_satype = satype;
+       for(i=0; i<3; i++) {
+               pfkey_x_satype->sadb_x_satype_reserved[i] = 0;
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_x_debug_build(struct sadb_ext**  pfkey_ext,
+                   uint32_t            tunnel,
+                   uint32_t            netlink,
+                   uint32_t            xform,
+                   uint32_t            eroute,
+                   uint32_t            spi,
+                   uint32_t            radij,
+                   uint32_t            esp,
+                   uint32_t            ah,
+                   uint32_t            rcv,
+                   uint32_t            pfkey,
+                   uint32_t            ipcomp,
+                   uint32_t            verbose)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_debug *pfkey_x_debug = (struct sadb_x_debug *)*pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_x_debug_build:\n");
+       /* sanity checks... */
+       if(pfkey_x_debug) {
+               DEBUGGING(
+                       "pfkey_x_debug_build:why is pfkey_x_debug already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       DEBUGGING(
+               "pfkey_x_debug_build:tunnel=%x netlink=%x xform=%x eroute=%x spi=%x radij=%x esp=%x ah=%x rcv=%x pfkey=%x ipcomp=%x verbose=%x?\n",
+               tunnel, netlink, xform, eroute, spi, radij, esp, ah, rcv, pfkey, ipcomp, verbose);
+
+       if(!(*pfkey_ext = (struct sadb_ext*)pfkey_x_debug = (struct sadb_x_debug*)
+            MALLOC(sizeof(struct sadb_x_debug)))) {
+               DEBUGGING(
+                       "pfkey_x_debug_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+#if 0
+       memset(pfkey_x_debug,
+              0,
+              sizeof(struct sadb_x_debug));
+#endif
+       
+        pfkey_x_debug->sadb_x_debug_len = sizeof(struct sadb_x_debug) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_x_debug->sadb_x_debug_exttype = SADB_X_EXT_DEBUG;
+
+       pfkey_x_debug->sadb_x_debug_tunnel = tunnel;
+       pfkey_x_debug->sadb_x_debug_netlink = netlink;
+       pfkey_x_debug->sadb_x_debug_xform = xform;
+       pfkey_x_debug->sadb_x_debug_eroute = eroute;
+       pfkey_x_debug->sadb_x_debug_spi = spi;
+       pfkey_x_debug->sadb_x_debug_radij = radij;
+       pfkey_x_debug->sadb_x_debug_esp = esp;
+       pfkey_x_debug->sadb_x_debug_ah = ah;
+       pfkey_x_debug->sadb_x_debug_rcv = rcv;
+       pfkey_x_debug->sadb_x_debug_pfkey = pfkey;
+       pfkey_x_debug->sadb_x_debug_ipcomp = ipcomp;
+       pfkey_x_debug->sadb_x_debug_verbose = verbose;
+
+       for(i=0; i<4; i++) {
+               pfkey_x_debug->sadb_x_debug_reserved[i] = 0;
+       }
+
+errlab:
+       return error;
+}
+
+#if I_DONT_THINK_THIS_WILL_BE_USEFUL
+int (*ext_default_builders[SADB_EXT_MAX +1])(struct sadb_msg*, struct sadb_ext*)
+ =
+{
+       NULL, /* pfkey_msg_build, */
+       pfkey_sa_build,
+       pfkey_lifetime_build,
+       pfkey_lifetime_build,
+       pfkey_lifetime_build,
+       pfkey_address_build,
+       pfkey_address_build,
+       pfkey_address_build,
+       pfkey_key_build,
+       pfkey_key_build,
+       pfkey_ident_build,
+       pfkey_ident_build,
+       pfkey_sens_build,
+       pfkey_prop_build,
+       pfkey_supported_build,
+       pfkey_supported_build,
+       pfkey_spirange_build,
+       pfkey_x_kmprivate_build,
+       pfkey_x_satype_build,
+       pfkey_sa_build,
+       pfkey_address_build,
+       pfkey_address_build,
+       pfkey_address_build,
+       pfkey_address_build,
+       pfkey_address_build,
+       pfkey_x_ext_debug_build
+};
+#endif
+
+int
+pfkey_msg_build(struct sadb_msg **pfkey_msg, struct sadb_ext *extensions[], int dir)
+{
+       int error = 0;
+       int ext;
+       int total_size;
+       struct sadb_ext *pfkey_ext;
+       int extensions_seen = 0;
+       struct sadb_ext *extensions_check[SADB_EXT_MAX + 1];
+       
+       if(!extensions[0]) {
+               DEBUGGING(
+                       "pfkey_msg_build: extensions[0] must be specified (struct sadb_msg).\n");
+               SENDERR(EINVAL);
+       }
+
+       total_size = sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+       for(ext = 1; ext <= SADB_EXT_MAX; ext++) {
+               if(extensions[ext]) {
+                       total_size += (extensions[ext])->sadb_ext_len;
+               }
+        }                
+
+       if(!(*pfkey_msg = (struct sadb_msg*)MALLOC(total_size * IPSEC_PFKEYv2_ALIGN))) {
+               DEBUGGING(
+                       "pfkey_msg_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+
+       DEBUGGING(
+               "pfkey_msg_build: pfkey_msg=%p allocated %d bytes, &(extensions[0])=%p\n",
+               *pfkey_msg,
+               total_size * IPSEC_PFKEYv2_ALIGN,
+               &(extensions[0]));
+       memcpy(*pfkey_msg,
+              extensions[0],
+              sizeof(struct sadb_msg));
+       (*pfkey_msg)->sadb_msg_len = total_size;
+       (*pfkey_msg)->sadb_msg_reserved = 0;
+       extensions_seen =  1 ;
+
+       pfkey_ext = (struct sadb_ext*)(((char*)(*pfkey_msg)) + sizeof(struct sadb_msg));
+
+       for(ext = 1; ext <= SADB_EXT_MAX; ext++) {
+               /* copy from extension[ext] to buffer */
+               if(extensions[ext]) {    
+                       /* Is this type of extension permitted for this type of message? */
+                       if(!(extensions_bitmaps[dir][EXT_BITS_PERM][(*pfkey_msg)->sadb_msg_type] &
+                            1<<ext)) {
+                               DEBUGGING(
+                                       "pfkey_msg_build: "
+                                       "ext type %d not permitted, exts_perm=%08x, 1<<type=%08x\n", 
+                                       ext, 
+                                       extensions_bitmaps[dir][EXT_BITS_PERM][(*pfkey_msg)->sadb_msg_type],
+                                       1<<ext);
+                               SENDERR(EINVAL);
+                       }
+                       DEBUGGING(
+                               "pfkey_msg_build: copying %d bytes from extensions[%d]=%p to=%p\n",
+                               (extensions[ext])->sadb_ext_len * IPSEC_PFKEYv2_ALIGN,
+                               ext,
+                               (extensions[ext]),
+                               pfkey_ext);
+                       memcpy(pfkey_ext,
+                              extensions[ext],
+                              (extensions[ext])->sadb_ext_len * IPSEC_PFKEYv2_ALIGN);
+                       ((char*)pfkey_ext) += (extensions[ext])->sadb_ext_len * IPSEC_PFKEYv2_ALIGN;
+                       /* Mark that we have seen this extension and remember the header location */
+                       extensions_seen |= ( 1 << ext );
+               }
+       }
+
+       /* check required extensions */
+       DEBUGGING(
+               "pfkey_msg_build: extensions "
+               "permitted=%08x, seen=%08x, required=%08x.\n",
+               extensions_bitmaps[dir][EXT_BITS_PERM][(*pfkey_msg)->sadb_msg_type],
+               extensions_seen,
+               extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]);
+       
+       if((extensions_seen &
+           extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]) !=
+          extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]) {
+               DEBUGGING(
+                       "pfkey_msg_build: required extensions missing:%08x.\n",
+                       extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type] -
+                       (extensions_seen &
+                        extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]) );
+               SENDERR(EINVAL);
+       }
+       
+       if((error = pfkey_msg_parse(*pfkey_msg, NULL, extensions_check, dir))) {
+               DEBUGGING(
+                       "pfkey_msg_build: Trouble parsing newly built pfkey message, error=%d.\n",
+                       error);
+               SENDERR(-error);
+       }
+
+errlab:
+
+       return error;
+}
+
+/*
+ * $Log$
+ * Revision 1.21  2000/11/17 18:10:30  rgb
+ * Fixed bugs mostly relating to spirange, to treat all spi variables as
+ * network byte order since this is the way PF_KEYv2 stored spis.
+ *
+ * Revision 1.20  2000/10/12 00:02:39  rgb
+ * Removed 'format, ##' nonsense from debug macros for RH7.0.
+ *
+ * Revision 1.19  2000/10/10 20:10:20  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.18  2000/09/12 18:59:54  rgb
+ * Added Gerhard's IPv6 support to pfkey parts of libfreeswan.
+ *
+ * Revision 1.17  2000/09/12 03:27:00  rgb
+ * Moved DEBUGGING definition to compile kernel with debug off.
+ *
+ * Revision 1.16  2000/09/08 19:22:12  rgb
+ * Fixed pfkey_prop_build() parameter to be only single indirection.
+ * Fixed struct alg copy.
+ *
+ * Revision 1.15  2000/08/20 21:40:01  rgb
+ * Added an address parameter sanity check to pfkey_address_build().
+ *
+ * Revision 1.14  2000/08/15 17:29:23  rgb
+ * Fixes from SZI to untested pfkey_prop_build().
+ *
+ * Revision 1.13  2000/06/02 22:54:14  rgb
+ * Added Gerhard Gessler's struct sockaddr_storage mods for IPv6 support.
+ *
+ * Revision 1.12  2000/05/10 19:24:01  rgb
+ * Fleshed out sensitivity, proposal and supported extensions.
+ *
+ * Revision 1.11  2000/03/16 14:07:23  rgb
+ * Renamed ALIGN macro to avoid fighting with others in kernel.
+ *
+ * Revision 1.10  2000/01/24 21:14:35  rgb
+ * Added disabled pluto pfkey lib debug flag.
+ *
+ * Revision 1.9  2000/01/21 06:27:32  rgb
+ * Added address cases for eroute flows.
+ * Removed unused code.
+ * Dropped unused argument to pfkey_x_satype_build().
+ * Indented compiler directives for readability.
+ * Added klipsdebug switching capability.
+ * Fixed SADB_EXT_MAX bug not permitting last extension access.
+ *
+ * Revision 1.8  1999/12/29 21:17:41  rgb
+ * Changed pfkey_msg_build() I/F to include a struct sadb_msg**
+ * parameter for cleaner manipulation of extensions[] and to guard
+ * against potential memory leaks.
+ * Changed the I/F to pfkey_msg_free() for the same reason.
+ *
+ * Revision 1.7  1999/12/09 23:12:20  rgb
+ * Removed unused cruft.
+ * Added argument to pfkey_sa_build() to do eroutes.
+ * Fixed exttype check in as yet unused pfkey_lifetime_build().
+ *
+ * Revision 1.6  1999/12/07 19:54:29  rgb
+ * Removed static pluto debug flag.
+ * Added functions for pfkey message and extensions initialisation
+ * and cleanup.
+ *
+ * Revision 1.5  1999/12/01 22:20:06  rgb
+ * Changed pfkey_sa_build to accept an SPI in network byte order.
+ * Added <string.h> to quiet userspace compiler.
+ * Moved pfkey_lib_debug variable into the library.
+ * Removed SATYPE check from pfkey_msg_hdr_build so FLUSH will work.
+ * Added extension assembly debugging.
+ * Isolated assignment with brackets to be sure of scope.
+ *
+ * Revision 1.4  1999/11/27 11:57:35  rgb
+ * Added ipv6 headers.
+ * Remove over-zealous algorithm sanity checkers from pfkey_sa_build.
+ * Debugging error messages added.
+ * Fixed missing auth and encrypt assignment bug.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Move parse-after-build check inside pfkey_msg_build().
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ * Add CVS log entry to bottom of file.
+ *
+ */
diff -druN linux-noipsec/net/ipsec/libfreeswan/pfkey_v2_ext_bits.c linux/net/ipsec/libfreeswan/pfkey_v2_ext_bits.c
--- linux-noipsec/net/ipsec/libfreeswan/pfkey_v2_ext_bits.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/pfkey_v2_ext_bits.c     Wed Sep 13 00:35:37 2000
@@ -0,0 +1,696 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_parse.c.
+ */
+
+char pfkey_v2_ext_bits_c_version[] = "$Id$";
+
+/*
+ * Some ugly stuff to allow consistent debugging code for use in the
+ * kernel and in user space
+*/
+
+#ifdef __KERNEL__
+
+#include <linux/kernel.h>  /* for printk */
+
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */ 
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#include <linux/ipv6.h>
+#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+
+#else /* __KERNEL__ */
+
+#include <sys/types.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#endif
+
+#include <freeswan.h>
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+unsigned int extensions_bitmaps[2/*in/out*/][2/*perm/req*/][SADB_MAX + 1/*ext*/] = {
+
+/* INBOUND EXTENSIONS */
+{
+
+/* PERMITTED IN */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_SPIRANGE
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_EXPIRE */
+0
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+},
+
+/* REQUIRED IN */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_SPIRANGE
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+/*| 1<<SADB_EXT_KEY_AUTH*/
+/*| 1<<SADB_EXT_KEY_ENCRYPT*/
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_EXPIRE */
+0
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+/*| 1<<SADB_X_EXT_SATYPE2*/
+/*| 1<<SADB_X_EXT_SA2*/
+/*| 1<<SADB_X_EXT_ADDRESS_DST2*/
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+/*| 1<<SADB_EXT_SA*/
+#if 0 /* SADB_X_CLREROUTE doesn't need all these... */
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+#endif
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+}
+
+},
+
+/* OUTBOUND EXTENSIONS */
+{
+
+/* PERMITTED OUT */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+,
+/* SADB_EXPIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+},
+
+/* REQUIRED OUT */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+/* | 1<<SADB_EXT_SUPPORTED_AUTH
+   | 1<<SADB_EXT_SUPPORTED_ENCRYPT */
+,
+/* SADB_EXPIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+/* | 1<<SADB_EXT_LIFETIME_HARD
+   | 1<<SADB_EXT_LIFETIME_SOFT */
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+/*| 1<<SADB_EXT_SA*/
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+}
+}
+};
+
+/*
+ * $Log$
+ * Revision 1.7  2000/09/12 22:35:37  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.6  2000/09/09 06:39:01  rgb
+ * Added comments for clarity.
+ *
+ * Revision 1.5  2000/06/02 22:54:14  rgb
+ * Added Gerhard Gessler's struct sockaddr_storage mods for IPv6 support.
+ *
+ * Revision 1.4  2000/01/21 06:27:56  rgb
+ * Added address cases for eroute flows.
+ * Added comments for each message type.
+ * Added klipsdebug switching capability.
+ * Fixed GRPSA bitfields.
+ *
+ * Revision 1.3  1999/12/01 22:20:27  rgb
+ * Remove requirement for a proxy address in an incoming getspi message.
+ *
+ * Revision 1.2  1999/11/27 11:57:06  rgb
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ * Add CVS log entry to bottom of file.
+ * Cleaned out unused bits.
+ *
+ */
diff -druN linux-noipsec/net/ipsec/libfreeswan/pfkey_v2_parse.c linux/net/ipsec/libfreeswan/pfkey_v2_parse.c
--- linux-noipsec/net/ipsec/libfreeswan/pfkey_v2_parse.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/pfkey_v2_parse.c        Fri Nov 17 19:10:30 2000
@@ -0,0 +1,1428 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_parser.c.
+ */
+
+char pfkey_v2_parse_c_version[] = "$Id$";
+
+/*
+ * Some ugly stuff to allow consistent debugging code for use in the
+ * kernel and in user space
+*/
+
+#ifdef __KERNEL__
+
+# include <linux/kernel.h>  /* for printk */
+
+# include <linux/malloc.h> /* kmalloc() */
+# include <linux/errno.h>  /* error codes */
+# include <linux/types.h>  /* size_t */
+# include <linux/interrupt.h> /* mark_bh */
+
+# include <linux/netdevice.h>   /* struct device, and other headers */
+# include <linux/etherdevice.h> /* eth_type_trans */
+# include <linux/ip.h>          /* struct iphdr */ 
+# if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#  include <linux/ipv6.h>        /* struct ipv6hdr */
+# endif /* if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+extern int debug_pfkey;
+
+#else /* __KERNEL__ */
+
+# include <sys/types.h>
+# include <linux/types.h>
+# include <linux/errno.h>
+
+# include "../pluto/constants.h" 
+# include "../pluto/defs.h"  /* for PRINTF_LIKE */
+# include "../pluto/log.h"  /* for debugging and DBG_log */
+
+extern unsigned int pfkey_lib_debug;  /* bits selecting what to report */
+
+/* #define PLUTO */
+
+# ifdef PLUTO
+#  define DEBUGGING(args...)  { DBG_log("pfkey_lib_debug:" args);  }
+# else
+#  define DEBUGGING(args...)  if(pfkey_lib_debug) { printf("pfkey_lib_debug:" args); } else { ; }
+# endif
+
+#endif /* __KERNEL__ */
+
+
+#include <freeswan.h>
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef __KERNEL__
+# include "../radij.h"  /* rd_nodes */
+# include "../ipsec_encap.h"  /* sockaddr_encap */
+# include "../ipsec_netlink.h"  /* KLIPS_PRINT */
+# define DEBUGGING(args...) \
+         KLIPS_PRINT(debug_pfkey, "klips_debug:" args)
+/*         ((debug_pfkey) ? printk(KERN_INFO "klips_debug:" format , ## args) : 0) */
+#endif /* __KERNEL__ */
+
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+struct satype_tbl {
+       uint8_t proto;
+       uint8_t satype;
+       char* name;
+} static satype_tbl[] = {
+#ifdef __KERNEL__
+       { IPPROTO_ESP,  SADB_SATYPE_ESP,        "ESP"  },
+       { IPPROTO_AH,   SADB_SATYPE_AH,         "AH"   },
+       { IPPROTO_IPIP, SADB_X_SATYPE_IPIP,     "IPIP" },
+#ifdef CONFIG_IPSEC_IPCOMP
+       { IPPROTO_COMP, SADB_X_SATYPE_COMP,     "COMP" },
+#endif /* CONFIG_IPSEC_IPCOMP */
+#else /* __KERNEL__ */
+       { SA_ESP,       SADB_SATYPE_ESP,        "ESP"  },
+       { SA_AH,        SADB_SATYPE_AH,         "AH"   },
+       { SA_IPIP,      SADB_X_SATYPE_IPIP,     "IPIP" },
+       { SA_COMP,      SADB_X_SATYPE_COMP,     "COMP" },
+#endif /* __KERNEL__ */
+       { 0, 0 }
+};
+
+uint8_t satype2proto(uint8_t satype) {
+       int i =0;
+
+       while(satype_tbl[i].satype != satype && satype_tbl[i].satype != 0) {
+               i++;
+       }
+       return satype_tbl[i].proto;
+}
+
+uint8_t proto2satype(uint8_t proto) {
+       int i = 0;
+
+       while(satype_tbl[i].proto != proto && satype_tbl[i].proto != 0) {
+               i++;
+       }
+       return satype_tbl[i].satype;
+}
+
+char* proto2name(uint8_t proto) {
+       int i = 0;
+
+       while(satype_tbl[i].proto != proto && satype_tbl[i].proto != 0) {
+               i++;
+       }
+       return satype_tbl[i].name;
+}
+
+uint8_t sadb_satype2proto[] = {
+#ifdef __KERNEL__
+       0,
+       0,
+       IPPROTO_AH,
+       IPPROTO_ESP,
+       0,
+       0,
+       0,
+       0,
+       0,
+       IPPROTO_IPIP,
+       IPPROTO_COMP
+#else /* __KERNEL__ */
+       0,
+       0,
+       SA_AH,
+       SA_ESP,
+       0,
+       0,
+       0,
+       0,
+       0,
+       SA_IPIP,
+       SA_COMP
+#endif /* __KERNEL__ */
+};
+
+/* Default extension parsers taken from the KLIPS code */
+
+DEBUG_NO_STATIC int
+pfkey_sa_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_sa *pfkey_sa = (struct sadb_sa *)pfkey_ext;
+       
+       DEBUGGING(
+               "pfkey_sa_parse:\n");
+       /* sanity checks... */
+       if(!pfkey_sa) {
+               DEBUGGING(
+                       "pfkey_sa_parse: NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_len != sizeof(struct sadb_sa) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_sa_parse: length wrong pfkey_sa->sadb_sa_len=%d sizeof(struct sadb_sa)=%d.\n",
+                       pfkey_sa->sadb_sa_len,
+                       sizeof(struct sadb_sa));
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_encrypt > SADB_EALG_MAX) {
+               DEBUGGING(
+                       "pfkey_sa_parse: pfkey_sa->sadb_sa_encrypt=%d > SADB_EALG_MAX=%d.\n",
+                       pfkey_sa->sadb_sa_encrypt,
+                       SADB_EALG_MAX);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_auth > SADB_AALG_MAX) {
+               DEBUGGING(
+                       "pfkey_sa_parse: pfkey_sa->sadb_sa_auth=%d > SADB_AALG_MAX=%d.\n",
+                       pfkey_sa->sadb_sa_auth,
+                       SADB_AALG_MAX);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_state > SADB_SASTATE_MAX) {
+               DEBUGGING(
+                       "pfkey_sa_parse: state=%d exceeds MAX=%d.\n",
+                       pfkey_sa->sadb_sa_state,
+                       SADB_SASTATE_MAX);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_state == SADB_SASTATE_DEAD) {
+               DEBUGGING(
+                       "pfkey_sa_parse: state=%d is DEAD=%d.\n",
+                       pfkey_sa->sadb_sa_state,
+                       SADB_SASTATE_DEAD);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_replay > 64) {
+               DEBUGGING(
+                       "pfkey_sa_parse: replay window size: %d"
+                       " -- must be 0 <= size <= 64\n",
+                       pfkey_sa->sadb_sa_replay);
+               SENDERR(EINVAL);
+       }
+       
+       if(! ((pfkey_sa->sadb_sa_exttype ==  SADB_EXT_SA) ||
+             (pfkey_sa->sadb_sa_exttype ==  SADB_X_EXT_SA2)))
+       {
+               DEBUGGING(
+                       "pfkey_sa_parse: unknown exttype=%d, expecting SADB_EXT_SA=%d or SADB_X_EXT_SA2=%d.\n",
+                       pfkey_sa->sadb_sa_exttype,
+                       SADB_EXT_SA,
+                       SADB_X_EXT_SA2);
+               SENDERR(EINVAL);
+       }
+       DEBUGGING(
+               "pfkey_sa_parse: successfully found len=%d exttype=%d spi=%08lx replay=%d state=%d auth=%d encrypt=%d flags=%d.\n",
+               pfkey_sa->sadb_sa_len,
+               pfkey_sa->sadb_sa_exttype,
+               (long unsigned int)ntohl(pfkey_sa->sadb_sa_spi),
+               pfkey_sa->sadb_sa_replay,
+               pfkey_sa->sadb_sa_state,
+               pfkey_sa->sadb_sa_auth,
+               pfkey_sa->sadb_sa_encrypt,
+               pfkey_sa->sadb_sa_flags);
+
+ errlab:
+       return error;
+}      
+
+DEBUG_NO_STATIC int
+pfkey_lifetime_parse(struct sadb_ext  *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_lifetime *pfkey_lifetime = (struct sadb_lifetime *)pfkey_ext;
+
+       DEBUGGING(
+                   "pfkey_lifetime_parse:\n");
+       /* sanity checks... */
+       if(!pfkey_lifetime) {
+               DEBUGGING(
+                       "pfkey_lifetime_parse: NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_lifetime->sadb_lifetime_len !=
+          sizeof(struct sadb_lifetime) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_lifetime_parse: length wrong pfkey_lifetime->sadb_lifetime_len=%d sizeof(struct sadb_lifetime)=%d.\n",
+                       pfkey_lifetime->sadb_lifetime_len,
+                       sizeof(struct sadb_lifetime));
+               SENDERR(EINVAL);
+       }
+
+       if((pfkey_lifetime->sadb_lifetime_exttype != SADB_EXT_LIFETIME_HARD) &&
+          (pfkey_lifetime->sadb_lifetime_exttype != SADB_EXT_LIFETIME_SOFT) &&
+          (pfkey_lifetime->sadb_lifetime_exttype != SADB_EXT_LIFETIME_CURRENT)) {
+               DEBUGGING( 
+                       "pfkey_lifetime_parse: unexpected ext_type=%d.\n", 
+                       pfkey_lifetime->sadb_lifetime_exttype); 
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_address_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int saddr_len = 0;
+       struct sadb_address *pfkey_address = (struct sadb_address *)pfkey_ext;
+       struct sockaddr* s = (struct sockaddr*)((char*)pfkey_address + sizeof(*pfkey_address));
+       char ipaddr_txt[ADDRTOT_BUF];
+       
+       DEBUGGING(
+               "pfkey_address_parse:\n");
+       /* sanity checks... */
+       if(!pfkey_address) {
+               DEBUGGING(
+                       "pfkey_address_parse: NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_address->sadb_address_len <
+          (sizeof(struct sadb_address) + sizeof(struct sockaddr))/
+          IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_address_parse: size wrong 1 ext_len=%d, adr_ext_len=%d, saddr_len=%d.\n",
+                       pfkey_address->sadb_address_len,
+                       sizeof(struct sadb_address),
+                       sizeof(struct sockaddr));
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_address->sadb_address_reserved) {
+               DEBUGGING(
+                       "pfkey_address_parse: res=%d, must be zero.\n",
+                       pfkey_address->sadb_address_reserved);
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_address->sadb_address_exttype) {   
+       case SADB_EXT_ADDRESS_SRC:
+       case SADB_EXT_ADDRESS_DST:
+       case SADB_EXT_ADDRESS_PROXY:
+       case SADB_X_EXT_ADDRESS_DST2:
+       case SADB_X_EXT_ADDRESS_SRC_FLOW:
+       case SADB_X_EXT_ADDRESS_DST_FLOW:
+       case SADB_X_EXT_ADDRESS_SRC_MASK:
+       case SADB_X_EXT_ADDRESS_DST_MASK:
+               break;
+       default:
+               DEBUGGING( 
+                       "pfkey_address_parse: unexpected ext_type=%d.\n", 
+                       pfkey_address->sadb_address_exttype); 
+               SENDERR(EINVAL); 
+       }
+       
+       switch(s->sa_family) {
+       case AF_INET:
+               DEBUGGING(
+                       "pfkey_address_parse: found address family=%d, AF_INET.\n",
+                       s->sa_family);
+               saddr_len = sizeof(struct sockaddr_in);
+               sprintf(ipaddr_txt, "%d.%d.%d.%d"
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >>  0) & 0xFF
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >>  8) & 0xFF
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >> 16) & 0xFF
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >> 24) & 0xFF);
+               DEBUGGING(
+                       "pfkey_address_parse: found address=%s.\n",
+                       ipaddr_txt);
+               break;
+       case AF_INET6:
+               DEBUGGING(
+                       "pfkey_address_parse: found address family=%d, AF_INET6.\n",
+                       s->sa_family);
+               saddr_len = sizeof(struct sockaddr_in6);
+               sprintf(ipaddr_txt, "%x:%x:%x:%x:%x:%x:%x:%x"
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[0])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[1])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[2])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[3])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[4])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[5])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[6])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[7]));
+               DEBUGGING(
+                       "pfkey_address_parse: found address=%s.\n",
+                       ipaddr_txt);
+               break;
+       default:
+               DEBUGGING(
+                       "pfkey_address_parse: s->sa_family=%d not supported.\n",
+                       s->sa_family);
+               SENDERR(EPFNOSUPPORT);
+       }
+       
+       if(pfkey_address->sadb_address_len !=
+          DIVUP(sizeof(struct sadb_address) + saddr_len, IPSEC_PFKEYv2_ALIGN)) {
+               DEBUGGING(
+                       "pfkey_address_parse: size wrong 2 ext_len=%d, adr_ext_len=%d, saddr_len=%d.\n",
+                       pfkey_address->sadb_address_len,
+                       sizeof(struct sadb_address),
+                       saddr_len);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_address->sadb_address_prefixlen != 0) {
+               DEBUGGING(
+                       "pfkey_address_parse: address prefixes not supported yet.\n");
+               SENDERR(EAFNOSUPPORT); /* not supported yet */
+       }
+       
+       /* XXX check if port!=0 */
+       
+       DEBUGGING(
+               "pfkey_address_parse: successful.\n");
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_key_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_key *pfkey_key = (struct sadb_key *)pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_key_parse:\n");
+       /* sanity checks... */
+
+       if(!pfkey_key) {
+               DEBUGGING(
+                       "pfkey_key_parse: NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_key->sadb_key_len < sizeof(struct sadb_key) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_key_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_key->sadb_key_len,
+                       sizeof(struct sadb_key));
+               SENDERR(EINVAL);
+       }
+
+       if(!pfkey_key->sadb_key_bits) {
+               DEBUGGING(
+                       "pfkey_key_parse: key length set to zero, must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_key->sadb_key_len !=
+          DIVUP(sizeof(struct sadb_key) * OCTETBITS + pfkey_key->sadb_key_bits,
+                PFKEYBITS)) {
+               DEBUGGING(
+                       "pfkey_key_parse: key length=%d does not agree with extension length=%d.\n",
+                       pfkey_key->sadb_key_bits,
+                       pfkey_key->sadb_key_len);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_key->sadb_key_reserved) {
+               DEBUGGING(
+                       "pfkey_key_parse: res=%d, must be zero.\n",
+                       pfkey_key->sadb_key_reserved);
+               SENDERR(EINVAL);
+       }
+
+       if(! ( (pfkey_key->sadb_key_exttype == SADB_EXT_KEY_AUTH) ||
+              (pfkey_key->sadb_key_exttype == SADB_EXT_KEY_ENCRYPT))) {
+               DEBUGGING(
+                       "pfkey_key_parse: expecting extension type AUTH or ENCRYPT, got %d.\n",
+                       pfkey_key->sadb_key_exttype);
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(
+               "pfkey_key_parse: success, found len=%d exttype=%d bits=%d reserved=%d.\n",
+               pfkey_key->sadb_key_len,
+               pfkey_key->sadb_key_exttype,
+               pfkey_key->sadb_key_bits,
+               pfkey_key->sadb_key_reserved);
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_ident_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_ident *pfkey_ident = (struct sadb_ident *)pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_ident->sadb_ident_len < sizeof(struct sadb_ident) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_ident_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_ident->sadb_ident_len,
+                       sizeof(struct sadb_ident));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_ident->sadb_ident_type > SADB_IDENTTYPE_MAX) {
+               DEBUGGING(
+                       "pfkey_ident_parse: ident_type=%d out of range, must be less than %d.\n",
+                       pfkey_ident->sadb_ident_type,
+                       SADB_IDENTTYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_ident->sadb_ident_reserved) {
+               DEBUGGING(
+                       "pfkey_ident_parse: res=%d, must be zero.\n",
+                       pfkey_ident->sadb_ident_reserved);
+               SENDERR(EINVAL);
+       }
+
+       /* string terminator/padding must be zero */
+       if(pfkey_ident->sadb_ident_len > sizeof(struct sadb_ident) / IPSEC_PFKEYv2_ALIGN) {
+               if(*((char*)pfkey_ident + pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN - 1)) {
+                       DEBUGGING(
+                               "pfkey_ident_parse: string padding must be zero, last is 0x%02x.\n",
+                               *((char*)pfkey_ident +
+                                 pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN - 1));
+                       SENDERR(EINVAL);
+               }
+       }
+       
+       if( ! ((pfkey_ident->sadb_ident_exttype == SADB_EXT_IDENTITY_SRC) ||
+              (pfkey_ident->sadb_ident_exttype == SADB_EXT_IDENTITY_DST))) {
+               DEBUGGING(
+                       "pfkey_key_parse: expecting extension type IDENTITY_SRC or IDENTITY_DST, got %d.\n",
+                       pfkey_ident->sadb_ident_exttype);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_sens_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_sens *pfkey_sens = (struct sadb_sens *)pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_sens->sadb_sens_len < sizeof(struct sadb_sens) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_sens_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_sens->sadb_sens_len,
+                       sizeof(struct sadb_sens));
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(
+               "pfkey_sens_parse: Sorry, I can't parse exttype=%d yet.\n",
+               pfkey_ext->sadb_ext_type);
+#if 0
+       SENDERR(EINVAL); /* don't process these yet */
+#endif
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_prop_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int i, num_comb;
+       struct sadb_prop *pfkey_prop = (struct sadb_prop *)pfkey_ext;
+       struct sadb_comb *pfkey_comb = (struct sadb_comb *)((char*)pfkey_ext + sizeof(struct sadb_prop));
+
+       /* sanity checks... */
+       if((pfkey_prop->sadb_prop_len < sizeof(struct sadb_prop) / IPSEC_PFKEYv2_ALIGN) || 
+          (((pfkey_prop->sadb_prop_len * IPSEC_PFKEYv2_ALIGN) - sizeof(struct sadb_prop)) % sizeof(struct sadb_comb))) {
+               DEBUGGING(
+                       "pfkey_prop_parse: size wrong ext_len=%d, prop_ext_len=%d comb_ext_len=%d.\n",
+                       pfkey_prop->sadb_prop_len,
+                       sizeof(struct sadb_prop),
+                       sizeof(struct sadb_comb));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_prop->sadb_prop_replay > 64) {
+               DEBUGGING(
+                       "pfkey_prop_parse: replay window size: %d"
+                       " -- must be 0 <= size <= 64\n",
+                       pfkey_prop->sadb_prop_replay);
+               SENDERR(EINVAL);
+       }
+       
+       for(i=0; i<3; i++) {
+               if(pfkey_prop->sadb_prop_reserved[i]) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: res[%d]=%d, must be zero.\n",
+                               i, pfkey_prop->sadb_prop_reserved[i]);
+                       SENDERR(EINVAL);
+               }
+       }
+
+       num_comb = ((pfkey_prop->sadb_prop_len * IPSEC_PFKEYv2_ALIGN) - sizeof(struct sadb_prop)) / sizeof(struct sadb_comb);
+
+       for(i = 0; i < num_comb; i++) {
+               if(pfkey_comb->sadb_comb_auth > SADB_AALG_MAX) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_auth=%d > SADB_AALG_MAX=%d.\n",
+                               i,
+                               pfkey_comb->sadb_comb_auth,
+                               SADB_AALG_MAX);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_auth) {
+                       if(!pfkey_comb->sadb_comb_auth_minbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_auth_minbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(!pfkey_comb->sadb_comb_auth_maxbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_auth_maxbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_auth_minbits > pfkey_comb->sadb_comb_auth_maxbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_auth_minbits=%d > maxbits=%d, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_auth_minbits,
+                                       pfkey_comb->sadb_comb_auth_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               } else {
+                       if(pfkey_comb->sadb_comb_auth_minbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_auth_minbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_auth_minbits);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_auth_maxbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_auth_maxbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_auth_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               }
+
+               if(pfkey_comb->sadb_comb_encrypt > SADB_EALG_MAX) {
+                       DEBUGGING(
+                               "pfkey_comb_parse: pfkey_comb[%d]->sadb_comb_encrypt=%d > SADB_EALG_MAX=%d.\n",
+                               i,
+                               pfkey_comb->sadb_comb_encrypt,
+                               SADB_EALG_MAX);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_encrypt) {
+                       if(!pfkey_comb->sadb_comb_encrypt_minbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_encrypt_minbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(!pfkey_comb->sadb_comb_encrypt_maxbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_encrypt_maxbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_encrypt_minbits > pfkey_comb->sadb_comb_encrypt_maxbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_encrypt_minbits=%d > maxbits=%d, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_encrypt_minbits,
+                                       pfkey_comb->sadb_comb_encrypt_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               } else {
+                       if(pfkey_comb->sadb_comb_encrypt_minbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_encrypt_minbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_encrypt_minbits);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_encrypt_maxbits) {
+                               DEBUGGING(
+                                       "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_encrypt_maxbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_encrypt_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               }
+
+               /* XXX do sanity check on flags */
+
+               if(pfkey_comb->sadb_comb_hard_allocations && pfkey_comb->sadb_comb_soft_allocations > pfkey_comb->sadb_comb_hard_allocations) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_soft_allocations=%d > hard_allocations=%d, fatal.\n",
+                               i,
+                               pfkey_comb->sadb_comb_soft_allocations,
+                               pfkey_comb->sadb_comb_hard_allocations);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_hard_bytes && pfkey_comb->sadb_comb_soft_bytes > pfkey_comb->sadb_comb_hard_bytes) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_soft_bytes=%Ld > hard_bytes=%Ld, fatal.\n",
+                               i,
+                               pfkey_comb->sadb_comb_soft_bytes,
+                               pfkey_comb->sadb_comb_hard_bytes);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_hard_addtime && pfkey_comb->sadb_comb_soft_addtime > pfkey_comb->sadb_comb_hard_addtime) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_soft_addtime=%Ld > hard_addtime=%Ld, fatal.\n",
+                               i,
+                               pfkey_comb->sadb_comb_soft_addtime,
+                               pfkey_comb->sadb_comb_hard_addtime);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_hard_usetime && pfkey_comb->sadb_comb_soft_usetime > pfkey_comb->sadb_comb_hard_usetime) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: pfkey_comb[%d]->sadb_comb_soft_usetime=%Ld > hard_usetime=%Ld, fatal.\n",
+                               i,
+                               pfkey_comb->sadb_comb_soft_usetime,
+                               pfkey_comb->sadb_comb_hard_usetime);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_reserved) {
+                       DEBUGGING(
+                               "pfkey_prop_parse: comb[%d].res=%d, must be zero.\n",
+                               i,
+                               pfkey_comb->sadb_comb_reserved);
+                       SENDERR(EINVAL);
+               }
+               pfkey_comb++;
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_supported_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       unsigned int i, num_alg;
+       struct sadb_supported *pfkey_supported = (struct sadb_supported *)pfkey_ext;
+       struct sadb_alg *pfkey_alg = (struct sadb_alg*)((char*)pfkey_ext + sizeof(struct sadb_supported));
+
+       /* sanity checks... */
+       if((pfkey_supported->sadb_supported_len <
+          sizeof(struct sadb_supported) / IPSEC_PFKEYv2_ALIGN) ||
+          (((pfkey_supported->sadb_supported_len * IPSEC_PFKEYv2_ALIGN) -
+            sizeof(struct sadb_supported)) % sizeof(struct sadb_alg))) {
+
+               DEBUGGING(
+                       "pfkey_supported_parse: size wrong ext_len=%d, supported_ext_len=%d alg_ext_len=%d.\n",
+                       pfkey_supported->sadb_supported_len,
+                       sizeof(struct sadb_supported),
+                       sizeof(struct sadb_alg));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_supported->sadb_supported_reserved) {
+               DEBUGGING(
+                       "pfkey_supported_parse: res=%d, must be zero.\n",
+                       pfkey_supported->sadb_supported_reserved);
+               SENDERR(EINVAL);
+       }
+
+       num_alg = ((pfkey_supported->sadb_supported_len * IPSEC_PFKEYv2_ALIGN) - sizeof(struct sadb_supported)) / sizeof(struct sadb_alg);
+
+       for(i = 0; i < num_alg; i++) {
+               /* process algo description */
+               if(pfkey_alg->sadb_alg_reserved) {
+                       DEBUGGING(
+                               "pfkey_supported_parse: alg[%d], id=%d, ivlen=%d, minbits=%d, maxbits=%d, res=%d, must be zero.\n",
+                               i,
+                               pfkey_alg->sadb_alg_id,
+                               pfkey_alg->sadb_alg_ivlen,
+                               pfkey_alg->sadb_alg_minbits,
+                               pfkey_alg->sadb_alg_maxbits,
+                               pfkey_alg->sadb_alg_reserved);
+                       SENDERR(EINVAL);
+               }
+
+               /* XXX can alg_id auth/enc be determined from info given?
+                  Yes, but OpenBSD's method does not iteroperate with rfc2367.
+                  rgb, 2000-04-06 */
+
+               switch(pfkey_supported->sadb_supported_exttype) {
+               case SADB_EXT_SUPPORTED_AUTH:
+                       if(pfkey_alg->sadb_alg_id > SADB_AALG_MAX) {
+                               DEBUGGING(
+                                       "pfkey_supported_parse: alg[%d], alg_id=%d > SADB_AALG_MAX=%d, fatal.\n",
+                                       i,
+                                       pfkey_alg->sadb_alg_id,
+                                       SADB_AALG_MAX);
+                               SENDERR(EINVAL);
+                       }
+                       break;
+               case SADB_EXT_SUPPORTED_ENCRYPT:
+                       if(pfkey_alg->sadb_alg_id > SADB_EALG_MAX) {
+                               DEBUGGING(
+                                       "pfkey_supported_parse: alg[%d], alg_id=%d > SADB_EALG_MAX=%d, fatal.\n",
+                                       i,
+                                       pfkey_alg->sadb_alg_id,
+                                       SADB_EALG_MAX);
+                               SENDERR(EINVAL);
+                       }
+                       break;
+               default:
+                       DEBUGGING(
+                               "pfkey_supported_parse: alg[%d], alg_id=%d > SADB_EALG_MAX=%d, fatal.\n",
+                               i,
+                               pfkey_alg->sadb_alg_id,
+                               SADB_EALG_MAX);
+                       SENDERR(EINVAL);
+               }
+               pfkey_alg++;
+       }
+       
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_spirange_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_spirange *pfkey_spirange = (struct sadb_spirange *)pfkey_ext;
+       
+       /* sanity checks... */
+        if(pfkey_spirange->sadb_spirange_len !=
+          sizeof(struct sadb_spirange) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_spirange_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_spirange->sadb_spirange_len,
+                       sizeof(struct sadb_spirange));
+                SENDERR(EINVAL);
+        }
+       
+        if(pfkey_spirange->sadb_spirange_reserved) {
+               DEBUGGING(
+                       " pfkey_spirange_parse: reserved=%d must be set to zero.\n",
+                       pfkey_spirange->sadb_spirange_reserved);
+                SENDERR(EINVAL);
+        }
+       
+        if(ntohl(pfkey_spirange->sadb_spirange_max) < ntohl(pfkey_spirange->sadb_spirange_min)) {
+               DEBUGGING(
+                       " pfkey_spirange_parse: minspi=%08x must be < maxspi=%08x.\n",
+                       ntohl(pfkey_spirange->sadb_spirange_min),
+                       ntohl(pfkey_spirange->sadb_spirange_max));
+                SENDERR(EINVAL);
+        }
+       
+       if(ntohl(pfkey_spirange->sadb_spirange_min) <= 255) {
+               DEBUGGING(
+                       " pfkey_spirange_parse: minspi=%08x must be > 255.\n",
+                       ntohl(pfkey_spirange->sadb_spirange_min));
+               SENDERR(EEXIST);
+       }
+       
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_kmprivate_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_x_kmprivate *pfkey_x_kmprivate = (struct sadb_x_kmprivate *)pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_x_kmprivate->sadb_x_kmprivate_len <
+          sizeof(struct sadb_x_kmprivate) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_x_kmprivate_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_x_kmprivate->sadb_x_kmprivate_len,
+                       sizeof(struct sadb_x_kmprivate));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_x_kmprivate->sadb_x_kmprivate_reserved) {
+               DEBUGGING(
+                       " pfkey_x_kmprivate_parse: reserved=%d must be set to zero.\n",
+                       pfkey_x_kmprivate->sadb_x_kmprivate_reserved);
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(
+               "pfkey_x_kmprivate_parse: Sorry, I can't parse exttype=%d yet.\n",
+               pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_satype_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_satype *pfkey_x_satype = (struct sadb_x_satype *)pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_x_satype_parse:\n");
+       /* sanity checks... */
+       if(pfkey_x_satype->sadb_x_satype_len !=
+          sizeof(struct sadb_x_satype) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_x_satype_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_x_satype->sadb_x_satype_len,
+                       sizeof(struct sadb_x_satype));
+               SENDERR(EINVAL);
+       }
+       
+       if(!pfkey_x_satype->sadb_x_satype_satype) {
+               DEBUGGING(
+                       "pfkey_x_satype_parse: satype is zero, must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_x_satype->sadb_x_satype_satype > SADB_SATYPE_MAX) {
+               DEBUGGING(
+                       "pfkey_x_satype_parse: satype %d > max %d\n", 
+                       pfkey_x_satype->sadb_x_satype_satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(!(satype2proto(pfkey_x_satype->sadb_x_satype_satype))) {
+               DEBUGGING(
+                       "pfkey_x_satype_parse: proto lookup from satype=%d failed.\n",
+                       pfkey_x_satype->sadb_x_satype_satype);
+               SENDERR(EINVAL);
+       }
+
+       for(i = 0; i < 3; i++) {
+               if(pfkey_x_satype->sadb_x_satype_reserved[i]) {
+                       DEBUGGING(
+                               " pfkey_x_satype_parse: reserved[%d]=%d must be set to zero.\n",
+                               i, pfkey_x_satype->sadb_x_satype_reserved[i]);
+                       SENDERR(EINVAL);
+               }
+       }
+       
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_ext_debug_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_debug *pfkey_x_debug = (struct sadb_x_debug *)pfkey_ext;
+
+       DEBUGGING(
+               "pfkey_x_debug_parse:\n");
+       /* sanity checks... */
+       if(pfkey_x_debug->sadb_x_debug_len !=
+          sizeof(struct sadb_x_debug) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(
+                       "pfkey_x_debug_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                       pfkey_x_debug->sadb_x_debug_len,
+                       sizeof(struct sadb_x_debug));
+               SENDERR(EINVAL);
+       }
+       
+       for(i = 0; i < 4; i++) {
+               if(pfkey_x_debug->sadb_x_debug_reserved[i]) {
+                       DEBUGGING(
+                               " pfkey_x_debug_parse: reserved[%d]=%d must be set to zero.\n",
+                               i, pfkey_x_debug->sadb_x_debug_reserved[i]);
+                       SENDERR(EINVAL);
+               }
+       }
+       
+errlab:
+       return error;
+}
+
+int (*ext_default_parsers[SADB_EXT_MAX +1])(struct sadb_ext*) =
+{
+       NULL, /* pfkey_msg_parse, */
+       pfkey_sa_parse,
+       pfkey_lifetime_parse,
+       pfkey_lifetime_parse,
+       pfkey_lifetime_parse,
+       pfkey_address_parse,
+       pfkey_address_parse,
+       pfkey_address_parse,
+       pfkey_key_parse,
+       pfkey_key_parse,
+       pfkey_ident_parse,
+       pfkey_ident_parse,
+       pfkey_sens_parse,
+       pfkey_prop_parse,
+       pfkey_supported_parse,
+       pfkey_supported_parse,
+       pfkey_spirange_parse,
+       pfkey_x_kmprivate_parse,
+       pfkey_x_satype_parse,
+       pfkey_sa_parse,
+       pfkey_address_parse,
+       pfkey_address_parse,
+       pfkey_address_parse,
+       pfkey_address_parse,
+       pfkey_address_parse,
+       pfkey_x_ext_debug_parse
+};
+
+int
+pfkey_msg_parse(struct sadb_msg *pfkey_msg,
+               int (*ext_parsers[])(struct sadb_ext*),
+               struct sadb_ext *extensions[],
+               int dir)
+{
+       int error = 0;
+       int remain;
+       struct sadb_ext *pfkey_ext;
+       int extensions_seen = 0;
+       
+       DEBUGGING(
+               "pfkey_msg_parse: parsing message "
+               "ver=%d, type=%d, errno=%d, satype=%d, len=%d, res=%d, seq=%d, pid=%d.\n", 
+               pfkey_msg->sadb_msg_version,
+               pfkey_msg->sadb_msg_type,
+               pfkey_msg->sadb_msg_errno,
+               pfkey_msg->sadb_msg_satype,
+               pfkey_msg->sadb_msg_len,
+               pfkey_msg->sadb_msg_reserved,
+               pfkey_msg->sadb_msg_seq,
+               pfkey_msg->sadb_msg_pid);
+       
+       if(ext_parsers == NULL) ext_parsers = ext_default_parsers;
+       
+       pfkey_extensions_init(extensions);
+       
+       remain = pfkey_msg->sadb_msg_len;
+       remain -= sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+       
+       pfkey_ext = (struct sadb_ext*)((char*)pfkey_msg +
+                                      sizeof(struct sadb_msg));
+       
+       extensions[0] = (struct sadb_ext *) pfkey_msg;
+       
+       
+       if(pfkey_msg->sadb_msg_version != PF_KEY_V2) {
+               DEBUGGING(
+                       "pfkey_msg_parse: "
+                       "not PF_KEY_V2 msg, found %d, should be %d.\n",
+                       pfkey_msg->sadb_msg_version,
+                       PF_KEY_V2);
+               SENDERR(EINVAL);
+       }
+
+       if(!pfkey_msg->sadb_msg_type) {
+               DEBUGGING(
+                       "pfkey_msg_parse: msg type not set, must be non-zero..\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_msg->sadb_msg_type > SADB_MAX) {
+               DEBUGGING(
+                       "pfkey_msg_parse: msg type=%d > max=%d.\n",
+                       pfkey_msg->sadb_msg_type,
+                       SADB_MAX);
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_msg->sadb_msg_type) {
+       case SADB_GETSPI:
+       case SADB_UPDATE:
+       case SADB_ADD:
+       case SADB_DELETE:
+       case SADB_GET:
+       case SADB_ACQUIRE:
+       case SADB_REGISTER:
+       case SADB_EXPIRE:
+#if 0
+       case SADB_X_PROMISC:
+       case SADB_X_PCHANGE:
+#endif
+       case SADB_X_GRPSA:
+               if(!pfkey_msg->sadb_msg_satype) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: satype is zero, must be non-zero for msg_type %d.\n", pfkey_msg->sadb_msg_type);
+                       SENDERR(EINVAL);
+               }
+               switch(pfkey_msg->sadb_msg_satype) {
+               case SADB_SATYPE_ESP:
+               case SADB_SATYPE_AH:
+               case SADB_X_SATYPE_IPIP:
+               case SADB_X_SATYPE_COMP:
+                       break;
+               default:
+                       DEBUGGING(
+                               "pfkey_msg_parse: "
+                               "satype=%d is not supported yet.\n",
+                               pfkey_msg->sadb_msg_satype);
+                       SENDERR(EINVAL);
+               }
+               break;
+       default:
+       }
+       
+       /* errno must not be set in downward messages */
+       /* this is not entirely true... a response to an ACQUIRE could return an error */
+       if((dir == EXT_BITS_IN) && (pfkey_msg->sadb_msg_type != SADB_ACQUIRE) && pfkey_msg->sadb_msg_errno) {
+               DEBUGGING(
+                           "pfkey_msg_parse: "
+                           "errno set to %d.\n",
+                           pfkey_msg->sadb_msg_errno);
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(
+               "pfkey_msg_parse: remain=%d, ext_type=%d, ext_len=%d.\n", 
+               remain, pfkey_ext->sadb_ext_type, pfkey_ext->sadb_ext_len);
+       
+       DEBUGGING(
+               "pfkey_msg_parse: extensions "
+               "permitted=%08x, required=%08x.\n",
+               extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type],
+               extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]);
+       
+       extensions_seen = 1;
+       
+       while( (remain * IPSEC_PFKEYv2_ALIGN) >= sizeof(struct sadb_ext) ) {
+               /* Is there enough message left to support another extension header? */
+               if(remain < pfkey_ext->sadb_ext_len) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: remain %d less than ext len %d.\n", 
+                               remain, pfkey_ext->sadb_ext_len);
+                       SENDERR(EINVAL);
+               }
+               
+               DEBUGGING(
+                       "pfkey_msg_parse: parsing ext type=%d remain=%d.\n",
+                       pfkey_ext->sadb_ext_type,
+                       remain);
+               
+               /* Is the extension header type valid? */
+               if((pfkey_ext->sadb_ext_type > SADB_EXT_MAX) || (!pfkey_ext->sadb_ext_type)) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: ext type %d invalid, SADB_EXT_MAX=%d.\n", 
+                               pfkey_ext->sadb_ext_type, SADB_EXT_MAX);
+                       SENDERR(EINVAL);
+               }
+               
+               /* Have we already seen this type of extension? */
+               if((extensions_seen & ( 1 << pfkey_ext->sadb_ext_type )) != 0)
+               {
+                       DEBUGGING(
+                               "pfkey_msg_parse: ext type %d already seen.\n", 
+                               pfkey_ext->sadb_ext_type);
+                       SENDERR(EINVAL);
+               }
+
+               /* Do I even know about this type of extension? */
+               if(!(ext_parsers[pfkey_ext->sadb_ext_type])) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: ext type %d unknown, ignoring.\n", 
+                               pfkey_ext->sadb_ext_type);
+                       goto next_ext;
+               }
+
+               /* Is this type of extension permitted for this type of message? */
+               if(!(extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type] &
+                    1<<pfkey_ext->sadb_ext_type)) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: ext type %d not permitted, exts_perm_in=%08x, 1<<type=%08x\n", 
+                               pfkey_ext->sadb_ext_type, 
+                               extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type],
+                               1<<pfkey_ext->sadb_ext_type);
+                       SENDERR(EINVAL);
+               }
+
+               DEBUGGING(
+                       "pfkey_msg_parse: About to parse extension %d %p with parser %p.\n",
+                       pfkey_ext->sadb_ext_type,
+                       pfkey_ext,
+                       ext_parsers[pfkey_ext->sadb_ext_type]);
+               /* Parse the extension */
+               if((error = ext_parsers[pfkey_ext->sadb_ext_type](pfkey_ext))) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: extension parsing for type %d failed with error %d.\n",
+                               pfkey_ext->sadb_ext_type, error); 
+                       SENDERR(-error);
+               }
+               DEBUGGING(
+                       "pfkey_msg_parse: Extension %d parsed.\n",
+                       pfkey_ext->sadb_ext_type);
+               
+               /* Mark that we have seen this extension and remember the header location */
+               extensions_seen |= ( 1 << pfkey_ext->sadb_ext_type );
+               extensions[pfkey_ext->sadb_ext_type] = pfkey_ext;
+
+       next_ext:               
+               /* Calculate how much message remains */
+               remain -= pfkey_ext->sadb_ext_len;
+
+               if(!remain) {
+                       break;
+               }
+               /* Find the next extension header */
+               pfkey_ext = (struct sadb_ext*)((char*)pfkey_ext +
+                       pfkey_ext->sadb_ext_len * IPSEC_PFKEYv2_ALIGN);
+       }
+
+       if(remain) {
+               DEBUGGING(
+                       "pfkey_msg_parse: unexpected remainder of %d.\n", 
+                       remain);
+               /* why is there still something remaining? */
+               SENDERR(EINVAL);
+       }
+
+       /* check required extensions */
+       DEBUGGING(
+               "pfkey_msg_parse: extensions "
+               "permitted=%08x, seen=%08x, required=%08x.\n",
+               extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type],
+               extensions_seen,
+               extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]);
+
+       /* don't check further if it is an error return message since it
+          may not have a body */
+       if(pfkey_msg->sadb_msg_errno) {
+               return error;
+       }
+
+       if((extensions_seen &
+           extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]) !=
+          extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]) {
+               DEBUGGING(
+                       "pfkey_msg_parse: required extensions missing:%08x.\n",
+                       extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type] -
+                       (extensions_seen &
+                        extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]));
+               SENDERR(EINVAL);
+       }
+       
+       if((dir == EXT_BITS_IN) && (pfkey_msg->sadb_msg_type == SADB_X_DELFLOW)
+          && ((extensions_seen & SADB_X_EXT_ADDRESS_DELFLOW)
+              != SADB_X_EXT_ADDRESS_DELFLOW)
+          && (((extensions_seen & (1<<SADB_EXT_SA)) != (1<<SADB_EXT_SA))
+          || ((((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_flags
+               & SADB_X_SAFLAGS_CLEARFLOW)
+              != SADB_X_SAFLAGS_CLEARFLOW))) {
+               DEBUGGING(
+                       "pfkey_msg_parse: "
+                       "required SADB_X_DELFLOW extensions missing: either %08x must be present or %08x must be present with SADB_X_SAFLAGS_CLEARFLOW set.\n",
+                       SADB_X_EXT_ADDRESS_DELFLOW
+                       - (extensions_seen & SADB_X_EXT_ADDRESS_DELFLOW),
+                       (1<<SADB_EXT_SA) - (extensions_seen & (1<<SADB_EXT_SA)));
+               SENDERR(EINVAL);
+       }
+       
+       if((pfkey_msg->sadb_msg_type == SADB_ADD) ||
+          (pfkey_msg->sadb_msg_type == SADB_UPDATE)) {
+
+               /* check maturity */
+               if(((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state !=
+                  SADB_SASTATE_MATURE) {
+                       DEBUGGING(
+                               "pfkey_msg_parse: "
+                               "state=%d for add or update should be MATURE=%d.\n",
+                               ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state,
+                               SADB_SASTATE_MATURE);
+                       SENDERR(EINVAL);
+               }
+               
+               /* check AH and ESP */
+               if(((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype ==
+                  SADB_SATYPE_AH) {
+                       if(!(((struct sadb_sa*)extensions[SADB_EXT_SA]) &&
+                            ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_auth !=
+                            SADB_AALG_NONE)) {
+                               DEBUGGING(
+                                       "pfkey_msg_parse: "
+                                       "auth alg is zero, must be non-zero for AH SAs.\n");
+                               SENDERR(EINVAL);
+                       }
+                       if(((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_encrypt !=
+                          SADB_EALG_NONE) {
+                               DEBUGGING(
+                                       "pfkey_msg_parse: "
+                                       "AH handed encalg=%d, must be zero.\n",
+                                       ((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_encrypt);
+                               SENDERR(EINVAL);
+                       }
+               }
+               
+               if(((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype ==
+                  SADB_SATYPE_ESP) {
+                       if(!(((struct sadb_sa*)extensions[SADB_EXT_SA]) &&
+                            ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_encrypt !=
+                            SADB_EALG_NONE)) {
+                               DEBUGGING(
+                                       "pfkey_msg_parse: "
+                                       "encrypt alg=%d is zero, must be non-zero for ESP=%d SAs.\n",
+                                       ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_encrypt,
+                                       ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype);
+                               SENDERR(EINVAL);
+                       }
+                       if((((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_encrypt ==
+                           SADB_EALG_NULL) &&
+                          (((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_auth ==
+                           SADB_AALG_NONE) ) {
+                               DEBUGGING(
+                                       "pfkey_msg_parse: "
+                                       "ESP handed encNULL+authNONE, illegal combination.\n");
+                               SENDERR(EINVAL);
+                       }
+               }
+       }
+errlab:
+
+       return error;
+}
+
+/*
+ * $Log$
+ * Revision 1.30  2000/11/17 18:10:30  rgb
+ * Fixed bugs mostly relating to spirange, to treat all spi variables as
+ * network byte order since this is the way PF_KEYv2 stored spis.
+ *
+ * Revision 1.29  2000/10/12 00:02:39  rgb
+ * Removed 'format, ##' nonsense from debug macros for RH7.0.
+ *
+ * Revision 1.28  2000/09/20 16:23:04  rgb
+ * Remove over-paranoid extension check in the presence of sadb_msg_errno.
+ *
+ * Revision 1.27  2000/09/20 04:04:21  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names in
+ * oopsen.
+ *
+ * Revision 1.26  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.25  2000/09/12 22:35:37  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.24  2000/09/12 18:59:54  rgb
+ * Added Gerhard's IPv6 support to pfkey parts of libfreeswan.
+ *
+ * Revision 1.23  2000/09/12 03:27:00  rgb
+ * Moved DEBUGGING definition to compile kernel with debug off.
+ *
+ * Revision 1.22  2000/09/09 06:39:27  rgb
+ * Restrict pfkey errno check to downward messages only.
+ *
+ * Revision 1.21  2000/09/08 19:22:34  rgb
+ * Enabled pfkey_sens_parse().
+ * Added check for errno on downward acquire messages only.
+ *
+ * Revision 1.20  2000/09/01 18:48:23  rgb
+ * Fixed reserved check bug and added debug output in
+ * pfkey_supported_parse().
+ * Fixed debug output label bug in pfkey_ident_parse().
+ *
+ * Revision 1.19  2000/08/27 01:55:26  rgb
+ * Define OCTETBITS and PFKEYBITS to avoid using 'magic' numbers in code.
+ *
+ * Revision 1.18  2000/08/24 17:00:36  rgb
+ * Ignore unknown extensions instead of failing.
+ *
+ * Revision 1.17  2000/06/02 22:54:14  rgb
+ * Added Gerhard Gessler's struct sockaddr_storage mods for IPv6 support.
+ *
+ * Revision 1.16  2000/05/10 19:25:11  rgb
+ * Fleshed out proposal and supported extensions.
+ *
+ * Revision 1.15  2000/01/24 21:15:31  rgb
+ * Added disabled pluto pfkey lib debug flag.
+ * Added algo debugging reporting.
+ *
+ * Revision 1.14  2000/01/22 23:24:29  rgb
+ * Added new functions proto2satype() and satype2proto() and lookup
+ * table satype_tbl.  Also added proto2name() since it was easy.
+ *
+ * Revision 1.13  2000/01/21 09:43:59  rgb
+ * Cast ntohl(spi) as (unsigned long int) to shut up compiler.
+ *
+ * Revision 1.12  2000/01/21 06:28:19  rgb
+ * Added address cases for eroute flows.
+ * Indented compiler directives for readability.
+ * Added klipsdebug switching capability.
+ *
+ * Revision 1.11  1999/12/29 21:14:59  rgb
+ * Fixed debug text cut and paste typo.
+ *
+ * Revision 1.10  1999/12/10 17:45:24  rgb
+ * Added address debugging.
+ *
+ * Revision 1.9  1999/12/09 23:11:42  rgb
+ * Ditched <string.h> include since we no longer use memset().
+ * Use new pfkey_extensions_init() instead of memset().
+ * Added check for SATYPE in pfkey_msg_build().
+ * Tidy up comments and debugging comments.
+ *
+ * Revision 1.8  1999/12/07 19:55:26  rgb
+ * Removed unused first argument from extension parsers.
+ * Removed static pluto debug flag.
+ * Moved message type and state checking to pfkey_msg_parse().
+ * Changed print[fk] type from lx to x to quiet compiler.
+ * Removed redundant remain check.
+ * Changed __u* types to uint* to avoid use of asm/types.h and
+ * sys/types.h in userspace code.
+ *
+ * Revision 1.7  1999/12/01 22:20:51  rgb
+ * Moved pfkey_lib_debug variable into the library.
+ * Added pfkey version check into header parsing.
+ * Added check for SATYPE only for those extensions that require a
+ * non-zero value.
+ *
+ * Revision 1.6  1999/11/27 11:58:05  rgb
+ * Added ipv6 headers.
+ * Moved sadb_satype2proto protocol lookup table from
+ * klips/net/ipsec/pfkey_v2_parser.c.
+ * Enable lifetime_current checking.
+ * Debugging error messages added.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ * Add CVS log entry to bottom of file.
+ * Moved auth and enc alg check to pfkey_msg_parse().
+ * Enable accidentally disabled spirange parsing.
+ * Moved protocol/algorithm checks from klips/net/ipsec/pfkey_v2_parser.c
+ *
+ */
diff -druN linux-noipsec/net/ipsec/libfreeswan/pfkeyv2.h linux/net/ipsec/libfreeswan/pfkeyv2.h
--- linux-noipsec/net/ipsec/libfreeswan/pfkeyv2.h       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/pfkeyv2.h       Tue Oct 10 22:10:20 2000
@@ -0,0 +1,317 @@
+/*
+ * RCSID $Id$
+ */
+
+/*
+This file defines structures and symbols for the PF_KEY Version 2
+key management interface. It was written at the U.S. Naval Research
+Laboratory. This file is in the public domain. The authors ask that
+you leave this credit intact on any copies of this file.
+*/
+#ifndef __PFKEY_V2_H
+#define __PFKEY_V2_H 1
+
+#define PF_KEY_V2 2
+#define PFKEYV2_REVISION        199806L
+
+#define SADB_RESERVED    0
+#define SADB_GETSPI      1
+#define SADB_UPDATE      2
+#define SADB_ADD         3
+#define SADB_DELETE      4
+#define SADB_GET         5
+#define SADB_ACQUIRE     6
+#define SADB_REGISTER    7
+#define SADB_EXPIRE      8
+#define SADB_FLUSH       9
+#define SADB_DUMP       10
+#define SADB_X_PROMISC  11
+#define SADB_X_PCHANGE  12
+#define SADB_X_GRPSA    13
+#define SADB_X_ADDFLOW 14
+#define SADB_X_DELFLOW 15
+#define SADB_X_DEBUG   16
+#define SADB_MAX        16
+
+struct sadb_msg {
+  uint8_t sadb_msg_version;
+  uint8_t sadb_msg_type;
+  uint8_t sadb_msg_errno;
+  uint8_t sadb_msg_satype;
+  uint16_t sadb_msg_len;
+  uint16_t sadb_msg_reserved;
+  uint32_t sadb_msg_seq;
+  uint32_t sadb_msg_pid;
+};
+
+struct sadb_ext {
+  uint16_t sadb_ext_len;
+  uint16_t sadb_ext_type;
+};
+
+struct sadb_sa {
+  uint16_t sadb_sa_len;
+  uint16_t sadb_sa_exttype;
+  uint32_t sadb_sa_spi;
+  uint8_t sadb_sa_replay;
+  uint8_t sadb_sa_state;
+  uint8_t sadb_sa_auth;
+  uint8_t sadb_sa_encrypt;
+  uint32_t sadb_sa_flags;
+};
+
+struct sadb_lifetime {
+  uint16_t sadb_lifetime_len;
+  uint16_t sadb_lifetime_exttype;
+  uint32_t sadb_lifetime_allocations;
+  uint64_t sadb_lifetime_bytes;
+  uint64_t sadb_lifetime_addtime;
+  uint64_t sadb_lifetime_usetime;
+};
+
+struct sadb_address {
+  uint16_t sadb_address_len;
+  uint16_t sadb_address_exttype;
+  uint8_t sadb_address_proto;
+  uint8_t sadb_address_prefixlen;
+  uint16_t sadb_address_reserved;
+};
+
+struct sadb_key {
+  uint16_t sadb_key_len;
+  uint16_t sadb_key_exttype;
+  uint16_t sadb_key_bits;
+  uint16_t sadb_key_reserved;
+};
+
+struct sadb_ident {
+  uint16_t sadb_ident_len;
+  uint16_t sadb_ident_exttype;
+  uint16_t sadb_ident_type;
+  uint16_t sadb_ident_reserved;
+  uint64_t sadb_ident_id;
+};
+
+struct sadb_sens {
+  uint16_t sadb_sens_len;
+  uint16_t sadb_sens_exttype;
+  uint32_t sadb_sens_dpd;
+  uint8_t sadb_sens_sens_level;
+  uint8_t sadb_sens_sens_len;
+  uint8_t sadb_sens_integ_level;
+  uint8_t sadb_sens_integ_len;
+  uint32_t sadb_sens_reserved;
+};
+
+struct sadb_prop {
+  uint16_t sadb_prop_len;
+  uint16_t sadb_prop_exttype;
+  uint8_t sadb_prop_replay;
+  uint8_t sadb_prop_reserved[3];
+};
+
+struct sadb_comb {
+  uint8_t sadb_comb_auth;
+  uint8_t sadb_comb_encrypt;
+  uint16_t sadb_comb_flags;
+  uint16_t sadb_comb_auth_minbits;
+  uint16_t sadb_comb_auth_maxbits;
+  uint16_t sadb_comb_encrypt_minbits;
+  uint16_t sadb_comb_encrypt_maxbits;
+  uint32_t sadb_comb_reserved;
+  uint32_t sadb_comb_soft_allocations;
+  uint32_t sadb_comb_hard_allocations;
+  uint64_t sadb_comb_soft_bytes;
+  uint64_t sadb_comb_hard_bytes;
+  uint64_t sadb_comb_soft_addtime;
+  uint64_t sadb_comb_hard_addtime;
+  uint64_t sadb_comb_soft_usetime;
+  uint64_t sadb_comb_hard_usetime;
+};
+
+struct sadb_supported {
+  uint16_t sadb_supported_len;
+  uint16_t sadb_supported_exttype;
+  uint32_t sadb_supported_reserved;
+};
+
+struct sadb_alg {
+  uint8_t sadb_alg_id;
+  uint8_t sadb_alg_ivlen;
+  uint16_t sadb_alg_minbits;
+  uint16_t sadb_alg_maxbits;
+  uint16_t sadb_alg_reserved;
+};
+
+struct sadb_spirange {
+  uint16_t sadb_spirange_len;
+  uint16_t sadb_spirange_exttype;
+  uint32_t sadb_spirange_min;
+  uint32_t sadb_spirange_max;
+  uint32_t sadb_spirange_reserved;
+};
+
+struct sadb_x_kmprivate {
+  uint16_t sadb_x_kmprivate_len;
+  uint16_t sadb_x_kmprivate_exttype;
+  uint32_t sadb_x_kmprivate_reserved;
+};
+
+struct sadb_x_satype {
+  uint16_t sadb_x_satype_len;
+  uint16_t sadb_x_satype_exttype;
+  uint8_t sadb_x_satype_satype;
+  uint8_t sadb_x_satype_reserved[3];
+};
+  
+struct sadb_x_debug {
+  uint16_t sadb_x_debug_len;
+  uint16_t sadb_x_debug_exttype;
+  uint32_t sadb_x_debug_tunnel;
+  uint32_t sadb_x_debug_netlink;
+  uint32_t sadb_x_debug_xform;
+  uint32_t sadb_x_debug_eroute;
+  uint32_t sadb_x_debug_spi;
+  uint32_t sadb_x_debug_radij;
+  uint32_t sadb_x_debug_esp;
+  uint32_t sadb_x_debug_ah;
+  uint32_t sadb_x_debug_rcv;
+  uint32_t sadb_x_debug_pfkey;
+  uint32_t sadb_x_debug_ipcomp;
+  uint32_t sadb_x_debug_verbose;
+  uint8_t sadb_x_debug_reserved[4];
+};
+  
+#define SADB_EXT_RESERVED             0
+#define SADB_EXT_SA                   1
+#define SADB_EXT_LIFETIME_CURRENT     2
+#define SADB_EXT_LIFETIME_HARD        3
+#define SADB_EXT_LIFETIME_SOFT        4
+#define SADB_EXT_ADDRESS_SRC          5
+#define SADB_EXT_ADDRESS_DST          6
+#define SADB_EXT_ADDRESS_PROXY        7
+#define SADB_EXT_KEY_AUTH             8
+#define SADB_EXT_KEY_ENCRYPT          9
+#define SADB_EXT_IDENTITY_SRC         10
+#define SADB_EXT_IDENTITY_DST         11
+#define SADB_EXT_SENSITIVITY          12
+#define SADB_EXT_PROPOSAL             13
+#define SADB_EXT_SUPPORTED_AUTH       14
+#define SADB_EXT_SUPPORTED_ENCRYPT    15
+#define SADB_EXT_SPIRANGE             16
+#define SADB_X_EXT_KMPRIVATE          17
+#define SADB_X_EXT_SATYPE2            18
+#define SADB_X_EXT_SA2                19
+#define SADB_X_EXT_ADDRESS_DST2       20
+#define SADB_X_EXT_ADDRESS_SRC_FLOW   21
+#define SADB_X_EXT_ADDRESS_DST_FLOW   22
+#define SADB_X_EXT_ADDRESS_SRC_MASK   23
+#define SADB_X_EXT_ADDRESS_DST_MASK   24
+#define SADB_X_EXT_DEBUG              25
+#define SADB_EXT_MAX                  25
+
+/* SADB_X_DELFLOW required over and above SADB_X_SAFLAGS_CLEARFLOW */
+#define SADB_X_EXT_ADDRESS_DELFLOW \
+       ( (1<<SADB_X_EXT_ADDRESS_SRC_FLOW) \
+       | (1<<SADB_X_EXT_ADDRESS_DST_FLOW) \
+       | (1<<SADB_X_EXT_ADDRESS_SRC_MASK) \
+       | (1<<SADB_X_EXT_ADDRESS_DST_MASK))
+
+#define SADB_SATYPE_UNSPEC    0
+#define SADB_SATYPE_AH        2
+#define SADB_SATYPE_ESP       3
+#define SADB_SATYPE_RSVP      5
+#define SADB_SATYPE_OSPFV2    6
+#define SADB_SATYPE_RIPV2     7
+#define SADB_SATYPE_MIP       8
+#define SADB_X_SATYPE_IPIP    9
+#define SADB_X_SATYPE_COMP    10
+#define SADB_SATYPE_MAX       10
+
+#define SADB_SASTATE_LARVAL   0
+#define SADB_SASTATE_MATURE   1
+#define SADB_SASTATE_DYING    2
+#define SADB_SASTATE_DEAD     3
+#define SADB_SASTATE_MAX      3
+
+#define SADB_SAFLAGS_PFS               1
+#define SADB_X_SAFLAGS_REPLACEFLOW     2
+#define SADB_X_SAFLAGS_CLEARFLOW       4
+
+#define SADB_AALG_NONE        0
+#define SADB_AALG_MD5HMAC     2
+#define SADB_AALG_SHA1HMAC    3
+#define SADB_AALG_MAX         3
+
+#define SADB_EALG_NONE        0
+#define SADB_EALG_DESCBC      2
+#define SADB_EALG_3DESCBC     3
+#define SADB_EALG_NULL        11
+#define SADB_EALG_MAX         11
+
+#define SADB_X_CALG_NONE          0
+#define SADB_X_CALG_OUI           1
+#define SADB_X_CALG_DEFLATE       2
+#define SADB_X_CALG_LZS           3
+#define SADB_X_CALG_V42BIS        4
+#define SADB_X_CALG_MAX           4
+
+#define SADB_X_TALG_NONE          0
+#define SADB_X_TALG_IPv4_in_IPv4  1
+#define SADB_X_TALG_IPv6_in_IPv4  2
+#define SADB_X_TALG_IPv4_in_IPv6  3
+#define SADB_X_TALG_IPv6_in_IPv6  4
+#define SADB_X_TALG_MAX           4
+
+
+#define SADB_IDENTTYPE_RESERVED   0
+#define SADB_IDENTTYPE_PREFIX     1
+#define SADB_IDENTTYPE_FQDN       2
+#define SADB_IDENTTYPE_USERFQDN   3
+#define SADB_IDENTTYPE_MAX        3
+
+#define SADB_KEY_FLAGS_MAX     0
+#endif /* __PFKEY_V2_H */
+
+/*
+ * $Log$
+ * Revision 1.13  2000/10/10 20:10:20  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.12  2000/09/15 06:41:50  rgb
+ * Added V42BIS constant.
+ *
+ * Revision 1.11  2000/09/12 22:35:37  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.10  2000/09/12 18:50:09  rgb
+ * Added IPIP tunnel types as algo support.
+ *
+ * Revision 1.9  2000/08/21 16:47:19  rgb
+ * Added SADB_X_CALG_* macros for IPCOMP.
+ *
+ * Revision 1.8  2000/08/09 20:43:34  rgb
+ * Fixed bitmask value for SADB_X_SAFLAGS_CLEAREROUTE.
+ *
+ * Revision 1.7  2000/01/21 06:28:37  rgb
+ * Added flow add/delete message type macros.
+ * Added flow address extension type macros.
+ * Tidied up spacing.
+ * Added klipsdebug switching capability.
+ *
+ * Revision 1.6  1999/11/27 11:56:08  rgb
+ * Add SADB_X_SATYPE_COMP for compression, eventually.
+ *
+ * Revision 1.5  1999/11/23 22:23:16  rgb
+ * This file has been moved in the distribution from klips/net/ipsec to
+ * lib.
+ *
+ * Revision 1.4  1999/04/29 15:23:29  rgb
+ * Add GRPSA support.
+ * Add support for a second SATYPE, SA and DST_ADDRESS.
+ * Add IPPROTO_IPIP support.
+ *
+ * Revision 1.3  1999/04/15 17:58:08  rgb
+ * Add RCSID labels.
+ *
+ */
diff -druN linux-noipsec/net/ipsec/libfreeswan/portof.c linux/net/ipsec/libfreeswan/portof.c
--- linux-noipsec/net/ipsec/libfreeswan/portof.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/portof.c        Fri Sep  8 20:03:45 2000
@@ -0,0 +1,96 @@
+/*
+ * low-level ip_address ugliness
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - portof - get the port field of an ip_address
+ */
+int                            /* network order */
+portof(src)
+const ip_address *src;
+{
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               return src->u.v4.sin_port;
+               break;
+       case AF_INET6:
+               return src->u.v6.sin6_port;
+               break;
+       default:
+               return -1;      /* "can't happen" */
+               break;
+       }
+}
+
+/*
+ - setportof - set the port field of an ip_address
+ */
+void
+setportof(port, dst)
+int port;                      /* network order */
+ip_address *dst;
+{
+       switch (dst->u.v4.sin_family) {
+       case AF_INET:
+               dst->u.v4.sin_port = port;
+               break;
+       case AF_INET6:
+               dst->u.v6.sin6_port = port;
+               break;
+       }
+}
+
+/*
+ - sockaddrof - get a pointer to the sockaddr hiding inside an ip_address
+ */
+struct sockaddr *
+sockaddrof(src)
+ip_address *src;
+{
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               return (struct sockaddr *)&src->u.v4;
+               break;
+       case AF_INET6:
+               return (struct sockaddr *)&src->u.v6;
+               break;
+       default:
+               return NULL;    /* "can't happen" */
+               break;
+       }
+}
+
+/*
+ - sockaddrlenof - get length of the sockaddr hiding inside an ip_address
+ */
+size_t                         /* 0 for error */
+sockaddrlenof(src)
+const ip_address *src;
+{
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               return sizeof(src->u.v4);
+               break;
+       case AF_INET6:
+               return sizeof(src->u.v6);
+               break;
+       default:
+               return 0;
+               break;
+       }
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/rangetoa.c linux/net/ipsec/libfreeswan/rangetoa.c
--- linux-noipsec/net/ipsec/libfreeswan/rangetoa.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/rangetoa.c      Sun Apr 11 01:24:21 1999
@@ -0,0 +1,61 @@
+/*
+ * convert binary form of address range to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - rangetoa - convert address range to ASCII
+ */
+size_t                         /* space needed for full conversion */
+rangetoa(addrs, format, dst, dstlen)
+struct in_addr addrs[2];
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       size_t rest;
+       int n;
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = addrtoa(addrs[0], 0, dst, dstlen);
+       if (len < dstlen)
+               for (p = dst + len - 1, n = 3; len < dstlen && n > 0;
+                                                               p++, len++, n--)
+                       *p = '.';
+       else
+               p = NULL;
+       if (len < dstlen)
+               rest = dstlen - len;
+       else {
+               if (dstlen > 0)
+                       *(dst + dstlen - 1) = '\0';
+               rest = 0;
+       }
+
+       len += addrtoa(addrs[1], 0, p, rest);
+
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/rangetosubnet.c linux/net/ipsec/libfreeswan/rangetosubnet.c
--- linux-noipsec/net/ipsec/libfreeswan/rangetosubnet.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/rangetosubnet.c Fri Sep  8 20:03:45 2000
@@ -0,0 +1,228 @@
+/*
+ * express an address range as a subnet (if possible)
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - rangetosubnet - turn an address range into a subnet, if possible
+ *
+ * A range which is a valid subnet will have a network part which is the
+ * same in the from value and the to value, followed by a host part which
+ * is all 0 in the from value and all 1 in the to value.
+ */
+err_t
+rangetosubnet(from, to, dst)
+const ip_address *from;
+const ip_address *to;
+ip_subnet *dst;
+{
+       unsigned const char *fp;
+       unsigned const char *tp;
+       unsigned fb;
+       unsigned tb;
+       unsigned const char *f;
+       unsigned const char *t;
+       size_t n;
+       size_t n2;
+       int i;
+       int nnet;
+       unsigned m;
+
+       if (addrtypeof(from) != addrtypeof(to))
+               return "mismatched address types";
+       n = addrbytesptr(from, &fp);
+       if (n == 0)
+               return "unknown address type";
+       n2 = addrbytesptr(to, &tp);
+       if (n != n2)
+               return "internal size mismatch in rangetosubnet";
+
+       f = fp;
+       t = tp;
+       nnet = 0;
+       for (i = n; i > 0 && *f == *t; i--, f++, t++)
+               nnet += 8;
+       if (i > 0 && !(*f == 0x00 && *t == 0xff)) {     /* mid-byte bdry. */
+               fb = *f++;
+               tb = *t++;
+               i--;
+               m = 0x80;
+               while ((fb&m) == (tb&m)) {
+                       fb &= ~m;
+                       tb |= m;
+                       m >>= 1;
+                       nnet++;
+               }
+               if (fb != 0x00 || tb != 0xff)
+                       return "not a valid subnet";
+       }
+       for (; i > 0 && *f == 0x00 && *t == 0xff; i--, f++, t++)
+               continue;
+
+       if (i != 0)
+               return "invalid subnet";
+
+       return initsubnet(from, nnet, 'x', dst);
+}
+
+
+
+#ifdef RANGETOSUBNET_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       ip_address start;
+       ip_address stop;
+       ip_subnet sub;
+       char buf[100];
+       const char *oops;
+       size_t n;
+       int af;
+       int i;
+
+       if (argc == 2 && strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       if (argc < 3) {
+               fprintf(stderr, "Usage: %s [-6] start stop\n", argv[0]);
+               fprintf(stderr, "   or: %s -r\n", argv[0]);
+               exit(2);
+       }
+
+       af = AF_INET;
+       i = 1;
+       if (strcmp(argv[i], "-6") == 0) {
+               af = AF_INET6;
+               i++;
+       }
+
+       oops = ttoaddr(argv[i], 0, af, &start);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: start conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       oops = ttoaddr(argv[i+1], 0, af, &stop);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: stop conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       oops = rangetosubnet(&start, &stop, &sub);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: rangetosubnet failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       n = subnettot(&sub, 0, buf, sizeof(buf));
+       if (n > sizeof(buf)) {
+               fprintf(stderr, "%s: reverse conversion", argv[0]);
+               fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+                                               (long)n, (long)sizeof(buf));
+               exit(1);
+       }
+       printf("%s\n", buf);
+
+       exit(0);
+}
+
+struct rtab {
+       int family;
+       char *start;
+       char *stop;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       4, "1.2.3.0",           "1.2.3.255",            "1.2.3.0/24",
+       4, "1.2.3.0",           "1.2.3.7",              "1.2.3.0/29",
+       4, "1.2.3.240",         "1.2.3.255",            "1.2.3.240/28",
+       4, "0.0.0.0",           "255.255.255.255",      "0.0.0.0/0",
+       4, "1.2.3.4",           "1.2.3.4",              "1.2.3.4/32",
+       4, "1.2.3.0",           "1.2.3.254",            NULL,
+       4, "1.2.3.0",           "1.2.3.126",            NULL,
+       4, "1.2.3.0",           "1.2.3.125",            NULL,
+       4, "1.2.0.0",           "1.2.255.255",          "1.2.0.0/16",
+       4, "1.2.0.0",           "1.2.0.255",            "1.2.0.0/24",
+       4, "1.2.255.0",         "1.2.255.255",          "1.2.255.0/24",
+       4, "1.2.255.0",         "1.2.254.255",          NULL,
+       4, "1.2.255.1",         "1.2.255.255",          NULL,
+       4, "1.2.0.1",           "1.2.255.255",          NULL,
+       6, "1:2:3:4:5:6:7:0",   "1:2:3:4:5:6:7:ffff",   "1:2:3:4:5:6:7:0/112",
+       6, "1:2:3:4:5:6:7:0",   "1:2:3:4:5:6:7:fff",    "1:2:3:4:5:6:7:0/116",
+       6, "1:2:3:4:5:6:7:f0",  "1:2:3:4:5:6:7:ff",     "1:2:3:4:5:6:7:f0/124",
+       4, NULL,                NULL,                   NULL,
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       ip_address start;
+       ip_address stop;
+       ip_subnet sub;
+       char buf[100];
+       const char *oops;
+       size_t n;
+       int af;
+
+       for (r = rtab; r->start != NULL; r++) {
+               af = (r->family == 4) ? AF_INET : AF_INET6;
+               oops = ttoaddr(r->start, 0, af, &start);
+               if (oops != NULL) {
+                       printf("surprise failure converting `%s'\n", r->start);
+                       exit(1);
+               }
+               oops = ttoaddr(r->stop, 0, af, &stop);
+               if (oops != NULL) {
+                       printf("surprise failure converting `%s'\n", r->stop);
+                       exit(1);
+               }
+               oops = rangetosubnet(&start, &stop, &sub);
+               if (oops != NULL && r->output == NULL)
+                       {}              /* okay, error expected */
+               else if (oops != NULL) {
+                       printf("`%s'-`%s' rangetosubnet failed: %s\n",
+                                               r->start, r->stop, oops);
+                       status = 1;
+               } else if (r->output == NULL) {
+                       printf("`%s'-`%s' rangetosubnet succeeded unexpectedly\n",
+                                                       r->start, r->stop);
+                       status = 1;
+               } else {
+                       n = subnettot(&sub, 0, buf, sizeof(buf));
+                       if (n > sizeof(buf)) {
+                               printf("`%s'-`%s' subnettot failed:  need %ld\n",
+                                               r->start, r->stop, (long)n);
+                               status = 1;
+                       } else if (strcmp(r->output, buf) != 0) {
+                               printf("`%s'-`%s' gave `%s', expected `%s'\n",
+                                       r->start, r->stop, buf, r->output);
+                               status = 1;
+                       }
+               }
+       }
+       exit(status);
+}
+
+#endif /* RANGETOSUBNET_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/sameaddr.c linux/net/ipsec/libfreeswan/sameaddr.c
--- linux-noipsec/net/ipsec/libfreeswan/sameaddr.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/sameaddr.c      Wed Nov 29 17:34:01 2000
@@ -0,0 +1,190 @@
+/*
+ * comparisons
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static int samenbits(const ip_address *a, const ip_address *b, int n);
+
+/*
+ - addrcmp - compare two addresses
+ * Caution, the order of the tests is subtle:  doing type test before
+ * size test can yield cases where a<b, b<c, but a>c.
+ */
+int                            /* like memcmp */
+addrcmp(a, b)
+const ip_address *a;
+const ip_address *b;
+{
+       int at = addrtypeof(a);
+       int bt = addrtypeof(b);
+       const unsigned char *ap;
+       const unsigned char *bp;
+       size_t as = addrbytesptr(a, &ap);
+       size_t bs = addrbytesptr(b, &bp);
+       size_t n = (as < bs) ? as : bs;         /* min(as, bs) */
+       int c = memcmp(ap, bp, n);
+
+       if (c != 0)             /* bytes differ */
+               return (c < 0) ? -1 : 1;
+       if (as != bs)           /* comparison incomplete:  lexical order */
+               return (as < bs) ? -1 : 1;
+       if (at != bt)           /* bytes same but not same type:  break tie */
+               return (at < bt) ? -1 : 1;
+       return 0;
+}
+
+/*
+ - sameaddr - are two addresses the same?
+ */
+int
+sameaddr(a, b)
+const ip_address *a;
+const ip_address *b;
+{
+       return (addrcmp(a, b) == 0) ? 1 : 0;
+}
+
+/*
+ - samesubnet - are two subnets the same?
+ */
+int
+samesubnet(a, b)
+const ip_subnet *a;
+const ip_subnet *b;
+{
+       if (!sameaddr(&a->addr, &b->addr))      /* also does type check */
+               return 0;
+       if (a->maskbits != b->maskbits)
+               return 0;
+       return 1;
+}
+
+/*
+ - subnetishost - is a subnet in fact a single host?
+ */
+int
+subnetishost(a)
+const ip_subnet *a;
+{
+       return (a->maskbits == addrlenof(&a->addr)*8) ? 1 : 0;
+}
+
+/*
+ - samesaid - are two SA IDs the same?
+ */
+int
+samesaid(a, b)
+const ip_said *a;
+const ip_said *b;
+{
+       if (a->spi != b->spi)   /* test first, most likely to be different */
+               return 0;
+       if (!sameaddr(&a->dst, &b->dst))
+               return 0;
+       if (a->proto != b->proto)
+               return 0;
+       return 1;
+}
+
+/*
+ - sameaddrtype - do two addresses have the same type?
+ */
+int
+sameaddrtype(a, b)
+const ip_address *a;
+const ip_address *b;
+{
+       return (addrtypeof(a) == addrtypeof(b)) ? 1 : 0;
+}
+
+/*
+ - samesubnettype - do two subnets have the same type?
+ */
+int
+samesubnettype(a, b)
+const ip_subnet *a;
+const ip_subnet *b;
+{
+       return (subnettypeof(a) == subnettypeof(b)) ? 1 : 0;
+}
+
+/*
+ - addrinsubnet - is this address in this subnet?
+ */
+int
+addrinsubnet(a, s)
+const ip_address *a;
+const ip_subnet *s;
+{
+       if (addrtypeof(a) != subnettypeof(s))
+               return 0;
+       if (!samenbits(a, &s->addr, s->maskbits))
+               return 0;
+       return 1;
+}
+
+/*
+ - subnetinsubnet - is one subnet within another?
+ */
+int
+subnetinsubnet(a, b)
+const ip_subnet *a;
+const ip_subnet *b;
+{
+       if (subnettypeof(a) != subnettypeof(b))
+               return 0;
+       if (a->maskbits < b->maskbits)  /* a is bigger than b */
+               return 0;
+       if (!samenbits(&a->addr, &b->addr, b->maskbits))
+               return 0;
+       return 1;
+}
+
+/*
+ - samenbits - do two addresses have the same first n bits?
+ */
+static int
+samenbits(a, b, nbits)
+const ip_address *a;
+const ip_address *b;
+int nbits;
+{
+       const unsigned char *ap;
+       const unsigned char *bp;
+       size_t n;
+       int m;
+
+       if (addrtypeof(a) != addrtypeof(b))
+               return 0;       /* arbitrary */
+       n = addrbytesptr(a, &ap);
+       if (n == 0)
+               return 0;       /* arbitrary */
+       (void) addrbytesptr(b, &bp);
+       if (nbits > n*8)
+               return 0;       /* "can't happen" */
+
+       for (; nbits >= 8 && *ap == *bp; nbits -= 8, ap++, bp++)
+               continue;
+       if (nbits >= 8)
+               return 0;
+       if (nbits > 0) {        /* partial byte */
+               m = ~(0xff >> nbits);
+               if ((*ap & m) != (*bp & m))
+                       return 0;
+       }
+       return 1;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/satoa.c linux/net/ipsec/libfreeswan/satoa.c
--- linux-noipsec/net/ipsec/libfreeswan/satoa.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/satoa.c Sat Sep 16 08:43:47 2000
@@ -0,0 +1,83 @@
+/*
+ * convert from binary form of SA ID to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static struct typename {
+       char type;
+       char *name;
+} typenames[] = {
+       { SA_AH,        "ah" },
+       { SA_ESP,       "esp" },
+       { SA_IPIP,      "tun" },
+       { SA_COMP,      "comp" },
+       { 0,            NULL }
+};
+
+/*
+ - satoa - convert SA to ASCII "ah507@1.2.3.4"
+ */
+size_t                         /* space needed for full conversion */
+satoa(sa, format, dst, dstlen)
+struct sa_id sa;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       int base;
+       struct typename *tn;
+       char buf[30+ADDRTOA_BUF];
+
+       switch (format) {
+       case 0:
+               base = 16;      /* temporarily at least */
+               break;
+       case 'd':
+               base = 10;
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       for (tn = typenames; tn->name != NULL; tn++)
+               if (sa.proto == tn->type)
+                       break;
+       if (tn->name == NULL)
+               return 0;
+
+       if (strcmp(tn->name, PASSTHROUGHTYPE) == 0 &&
+                                       sa.spi == PASSTHROUGHSPI &&
+                                       sa.dst.s_addr == PASSTHROUGHDST) {
+               strcpy(buf, PASSTHROUGHNAME);
+               len = strlen(buf);
+       } else {
+               strcpy(buf, tn->name);
+               len = strlen(buf);
+               len += ultoa(ntohl(sa.spi), base, buf+len, sizeof(buf)-len);
+               *(buf+len-1) = '@';
+               len += addrtoa(sa.dst, 0, buf+len, sizeof(buf)-len);
+       }
+
+       if (dst != NULL) {
+               if (len > dstlen)
+                       *(buf+dstlen-1) = '\0';
+               strcpy(dst, buf);
+       }
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/satot.c linux/net/ipsec/libfreeswan/satot.c
--- linux-noipsec/net/ipsec/libfreeswan/satot.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/satot.c Fri Sep 15 19:02:52 2000
@@ -0,0 +1,102 @@
+/*
+ * convert from binary form of SA ID to text
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static struct typename {
+       char type;
+       char *name;
+} typenames[] = {
+       { SA_AH,        "ah" },
+       { SA_ESP,       "esp" },
+       { SA_IPIP,      "tun" },
+       { SA_COMP,      "comp" },
+       { 0,            NULL }
+};
+
+/*
+ - satot - convert SA to text "ah507@1.2.3.4"
+ */
+size_t                         /* space needed for full conversion */
+satot(sa, format, dst, dstlen)
+const ip_said *sa;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       int base;
+       int showversion;        /* use delimiter to show IP version? */
+       struct typename *tn;
+       char buf[3+1+ULTOT_BUF+ADDRTOT_BUF];
+
+       switch (format) {
+       case 0:
+               base = 16;
+               showversion = 1;
+               break;
+       case 'f':
+               base = 17;
+               showversion = 1;
+               break;
+       case 'x':
+               base = 'x';
+               showversion = 0;
+               break;
+       case 'd':
+               base = 10;
+               showversion = 0;
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       for (tn = typenames; tn->name != NULL; tn++)
+               if (sa->proto == tn->type)
+                       break;
+       if (tn->name == NULL)
+               return 0;
+
+       if (strcmp(tn->name, PASSTHROUGHTYPE) == 0 &&
+                                       sa->spi == PASSTHROUGHSPI &&
+                                       isunspecaddr(&sa->dst)) {
+               strcpy(buf, (addrtypeof(&sa->dst) == AF_INET) ?
+                                                       PASSTHROUGH4NAME :
+                                                       PASSTHROUGH6NAME);
+               len = strlen(buf);
+       } else {
+               strcpy(buf, tn->name);
+               len = strlen(buf);
+               if (showversion) {
+                       *(buf+len) = (addrtypeof(&sa->dst) == AF_INET) ? '.' :
+                                                                       ':';
+                       len++;
+                       *(buf+len) = '\0';
+               }
+               len += ultot(ntohl(sa->spi), base, buf+len, sizeof(buf)-len);
+               *(buf+len-1) = '@';
+               len += addrtot(&sa->dst, 0, buf+len, sizeof(buf)-len);
+       }
+
+       if (dst != NULL) {
+               if (len > dstlen)
+                       *(buf+dstlen-1) = '\0';
+               strcpy(dst, buf);
+       }
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/subnetof.c linux/net/ipsec/libfreeswan/subnetof.c
--- linux-noipsec/net/ipsec/libfreeswan/subnetof.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/subnetof.c      Sun Apr 11 01:24:22 1999
@@ -0,0 +1,60 @@
+/*
+ * minor network-address manipulation utilities
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - subnetof - given address and mask, return subnet part
+ */
+struct in_addr
+subnetof(addr, mask)
+struct in_addr addr;
+struct in_addr mask;
+{
+       struct in_addr result;
+
+       result.s_addr = addr.s_addr & mask.s_addr;
+       return result;
+}
+
+/*
+ - hostof - given address and mask, return host part
+ */
+struct in_addr
+hostof(addr, mask)
+struct in_addr addr;
+struct in_addr mask;
+{
+       struct in_addr result;
+
+       result.s_addr = addr.s_addr & ~mask.s_addr;
+       return result;
+}
+
+/*
+ - broadcastof - given (network) address and mask, return broadcast address
+ */
+struct in_addr
+broadcastof(addr, mask)
+struct in_addr addr;
+struct in_addr mask;
+{
+       struct in_addr result;
+
+       result.s_addr = addr.s_addr | ~mask.s_addr;
+       return result;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/subnettoa.c linux/net/ipsec/libfreeswan/subnettoa.c
--- linux-noipsec/net/ipsec/libfreeswan/subnettoa.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/subnettoa.c     Sun Apr 11 01:24:22 1999
@@ -0,0 +1,62 @@
+/*
+ * convert binary form of subnet description to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - subnettoa - convert address and mask to ASCII "addr/mask"
+ * Output expresses the mask as a bit count if possible, else dotted decimal.
+ */
+size_t                         /* space needed for full conversion */
+subnettoa(addr, mask, format, dst, dstlen)
+struct in_addr addr;
+struct in_addr mask;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       size_t rest;
+       int n;
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = addrtoa(addr, 0, dst, dstlen);
+       if (len < dstlen) {
+               dst[len - 1] = '/';
+               p = dst + len;
+               rest = dstlen - len;
+       } else {
+               p = NULL;
+               rest = 0;
+       }
+
+       n = masktobits(mask);
+       if (n >= 0)
+               len += ultoa((unsigned long)n, 10, p, rest);
+       else
+               len += addrtoa(mask, 0, p, rest);
+
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/subnettot.c linux/net/ipsec/libfreeswan/subnettot.c
--- linux-noipsec/net/ipsec/libfreeswan/subnettot.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/subnettot.c     Fri Sep  8 20:03:45 2000
@@ -0,0 +1,56 @@
+/*
+ * convert binary form of subnet description to text
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - subnettot - convert subnet to text "addr/bitcount"
+ */
+size_t                         /* space needed for full conversion */
+subnettot(sub, format, dst, dstlen)
+const ip_subnet *sub;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       size_t rest;
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = addrtot(&sub->addr, format, dst, dstlen);
+       if (len < dstlen) {
+               dst[len - 1] = '/';
+               p = dst + len;
+               rest = dstlen - len;
+       } else {
+               p = NULL;
+               rest = 0;
+       }
+
+
+       len += ultoa((unsigned long)sub->maskbits, 10, p, rest);
+
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/subnettypeof.c linux/net/ipsec/libfreeswan/subnettypeof.c
--- linux-noipsec/net/ipsec/libfreeswan/subnettypeof.c  Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/subnettypeof.c  Fri Sep  8 20:03:45 2000
@@ -0,0 +1,109 @@
+/*
+ * extract parts of an ip_subnet, and related
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - subnettypeof - get the address type of an ip_subnet
+ */
+int
+subnettypeof(src)
+const ip_subnet *src;
+{
+       return src->addr.u.v4.sin_family;
+}
+
+/*
+ - networkof - get the network address of a subnet
+ */
+void
+networkof(src, dst)
+const ip_subnet *src;
+ip_address *dst;
+{
+       *dst = src->addr;
+}
+
+/*
+ - maskof - get the mask of a subnet, as an address
+ */
+void
+maskof(src, dst)
+const ip_subnet *src;
+ip_address *dst;
+{
+       int b;
+       unsigned char buf[16];
+       size_t n = addrlenof(&src->addr);
+       unsigned char *p;
+
+       if (src->maskbits > n*8 || n > sizeof(buf))
+               return;         /* "can't happen" */
+
+       p = buf;
+       for (b = src->maskbits; b >= 8; b -= 8)
+               *p++ = 0xff;
+       if (b != 0)
+               *p++ = (0xff << (8 - b)) & 0xff;
+       while (p - buf < n)
+               *p++ = 0;
+
+       (void) initaddr(buf, n, addrtypeof(&src->addr), dst);
+}
+
+/*
+ - masktocount - convert a mask, expressed as an address, to a bit count
+ */
+int                            /* -1 if not valid mask */
+masktocount(src)
+const ip_address *src;
+{
+       int b;
+       unsigned const char *bp;
+       size_t n;
+       unsigned const char *p;
+       unsigned const char *stop;
+
+       n = addrbytesptr(src, &bp);
+       if (n == 0)
+               return -1;
+
+       p = bp;
+       stop = bp + n;
+
+       n = 0;
+       while (p < stop && *p == 0xff) {
+               p++;
+               n += 8;
+       }
+       if (p < stop && *p != 0) {      /* boundary in mid-byte */
+               b = *p++;
+               while (b&0x80) {
+                       b <<= 1;
+                       n++;
+               }
+               if ((b&0xff) != 0)
+                       return -1;      /* bits not contiguous */
+       }
+       while (p < stop && *p == 0)
+               p++;
+
+       if (p != stop)
+               return -1;
+
+       return n;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/ttoaddr.c linux/net/ipsec/libfreeswan/ttoaddr.c
--- linux-noipsec/net/ipsec/libfreeswan/ttoaddr.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ttoaddr.c       Mon Oct  2 23:57:20 2000
@@ -0,0 +1,397 @@
+/*
+ * conversion from text forms of addresses to internal ones
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ * Legal ASCII characters in a domain name.  Underscore technically is not,
+ * but is a common misunderstanding.  Non-ASCII characters are simply
+ * exempted from checking at the moment, to allow for UTF-8 encoded stuff;
+ * the purpose of this check is merely to catch blatant errors.
+ */
+static const char namechars[] = "abcdefghijklmnopqrstuvwxyz0123456789"
+                               "ABCDEFGHIJKLMNOPQRSTUVWXYZ-_.";
+#define        ISASCII(c)      (((c) & 0x80) == 0)
+
+static err_t tryname(const char *, size_t, int, int, ip_address *);
+static err_t tryhex(const char *, size_t, int, ip_address *);
+static err_t trydotted(const char *, size_t, ip_address *);
+static err_t getbyte(const char **, const char *, int *);
+static err_t colon(const char *, size_t, ip_address *);
+static err_t getpiece(const char **, const char *, unsigned *);
+
+/*
+ - ttoaddr - convert text name or dotted-decimal address to binary address
+ */
+err_t                          /* NULL for success, else string literal */
+ttoaddr(src, srclen, af, dst)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+int af;                                /* address family */
+ip_address *dst;
+{
+       err_t oops;
+#      define  HEXLEN  10      /* strlen("0x11223344") */
+       int nultermd;
+
+       if (srclen == 0) {
+               srclen = strlen(src);
+               if (srclen == 0)
+                       return "empty string";
+               nultermd = 1;
+       } else
+               nultermd = 0;   /* at least, not *known* to be terminated */
+
+       if (af == AF_INET && srclen == HEXLEN && *src == '0') {
+               if (*(src+1) == 'x' || *(src+1) == 'X')
+                       return tryhex(src+2, srclen-2, 'x', dst);
+               if (*(src+1) == 'h' || *(src+1) == 'H')
+                       return tryhex(src+2, srclen-2, 'h', dst);
+       }
+
+       if (memchr(src, ':', srclen) != NULL) {
+               if (af != AF_INET6)
+                       return "non-ipv6 address may not contain `:'";
+               return colon(src, srclen, dst);
+       }
+
+       if (af == AF_INET) {
+               oops = trydotted(src, srclen, dst);
+               if (oops == NULL)
+                       return NULL;            /* it worked */
+               if (*oops != '?')
+                       return oops;            /* probably meant as d-d */
+       }
+
+       return tryname(src, srclen, nultermd, af, dst);
+}
+
+/*
+ - tnatoaddr - convert text numeric address (only) to binary address
+ */
+err_t                          /* NULL for success, else string literal */
+tnatoaddr(src, srclen, af, dst)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+int af;                                /* address family */
+ip_address *dst;
+{
+       err_t oops;
+
+       if (srclen == 0) {
+               srclen = strlen(src);
+               if (srclen == 0)
+                       return "empty string";
+       }
+
+       switch (af) {
+       case AF_INET6:
+               return colon(src, srclen, dst);
+               break;
+       case AF_INET:
+               oops = trydotted(src, srclen, dst);
+               if (oops == NULL)
+                       return NULL;            /* it worked */
+               if (*oops != '?')
+                       return oops;            /* probably meant as d-d */
+               return "does not appear to be numeric address";
+               break;
+       default:
+               return "unknown address family in tnatoaddr";
+               break;
+       }
+}
+
+/*
+ - tryname - try it as a name
+ * Slightly complicated by lack of reliable NUL termination in source.
+ */
+static err_t
+tryname(src, srclen, nultermd, af, dst)
+const char *src;
+size_t srclen;
+int nultermd;                  /* is it known to be NUL-terminated? */
+int af;
+ip_address *dst;
+{
+       struct hostent *h;
+       struct netent *ne = NULL;
+       char namebuf[100];      /* enough for most DNS names */
+       const char *cp;
+       char *p = namebuf;
+       size_t n;
+
+       for (cp = src, n = srclen; n > 0; cp++, n--)
+               if (ISASCII(*cp) && strchr(namechars, *cp) == NULL)
+                       return "illegal (non-DNS-name) character in name";
+
+       if (nultermd)
+               cp = src;
+       else {
+               if (srclen+1 > sizeof(namebuf)) {
+                       p = (char *) MALLOC(srclen+1);
+                       if (p == NULL)
+                               return "unable to get temporary space for name";
+               }
+               p[0] = '\0';    /* strncpy semantics are wrong */
+               strncat(p, src, srclen);
+               cp = (const char *)p;
+       }
+
+       h = gethostbyname2(cp, af);
+       if (h == NULL && af == AF_INET)
+               ne = getnetbyname(cp);
+       if (p != namebuf)
+               FREE(p);
+       if (h == NULL && ne == NULL)
+               return "does not look numeric and name lookup failed";
+
+       if (h != NULL) {
+               if (h->h_addrtype != af)
+                       return "address-type mismatch from gethostbyname2!!!";
+               return initaddr((unsigned char *)h->h_addr, h->h_length, af, dst);
+       } else {
+               if (ne->n_addrtype != af)
+                       return "address-type mismatch from getnetbyname!!!";
+               ne->n_net = htonl(ne->n_net);
+               return initaddr((unsigned char *)&ne->n_net, sizeof(ne->n_net),
+                                                               af, dst);
+       }
+}
+
+/*
+ - tryhex - try conversion as an eight-digit hex number (AF_INET only)
+ */
+static err_t
+tryhex(src, srclen, flavor, dst)
+const char *src;
+size_t srclen;                 /* should be 8 */
+int flavor;                    /* 'x' for network order, 'h' for host order */
+ip_address *dst;
+{
+       err_t oops;
+       unsigned long ul;
+       union {
+               uint32_t addr;
+               unsigned char buf[4];
+       } u;
+
+       if (srclen != 8)
+               return "internal error, tryhex called with bad length";
+
+       oops = ttoul(src, srclen, 16, &ul);
+       if (oops != NULL)
+               return oops;
+
+       u.addr = (flavor == 'h') ? ul : htonl(ul);
+       return initaddr(u.buf, sizeof(u.buf), AF_INET, dst);
+}
+
+/*
+ - trydotted - try conversion as dotted decimal (AF_INET only)
+ *
+ * If the first char of a complaint is '?', that means "didn't look like
+ * dotted decimal at all".
+ */
+static err_t
+trydotted(src, srclen, dst)
+const char *src;
+size_t srclen;
+ip_address *dst;
+{
+       const char *stop = src + srclen;        /* just past end */
+       int byte;
+       err_t oops;
+#      define  NBYTES  4
+       unsigned char buf[NBYTES];
+       int i;
+
+       memset(buf, 0, sizeof(buf));
+       for (i = 0; i < NBYTES && src < stop; i++) {
+               oops = getbyte(&src, stop, &byte);
+               if (oops != NULL) {
+                       if (*oops != '?')
+                               return oops;    /* bad number */
+                       if (i > 1)
+                               return oops+1;  /* failed number */
+                       return oops;            /* with leading '?' */
+               }
+               buf[i] = byte;
+               if (i < 3 && src < stop && *src++ != '.') {
+                       if (i == 0)
+                               return "?syntax error in dotted-decimal address";
+                       else
+                               return "syntax error in dotted-decimal address";
+               }
+       }
+       if (src != stop)
+               return "extra garbage on end of dotted-decimal address";
+
+       return initaddr(buf, sizeof(buf), AF_INET, dst);
+}
+
+/*
+ - getbyte - try to scan a byte in dotted decimal
+ * A subtlety here is that all this arithmetic on ASCII digits really is
+ * highly portable -- ANSI C guarantees that digits 0-9 are contiguous.
+ * It's easier to just do it ourselves than set up for a call to ttoul().
+ *
+ * If the first char of a complaint is '?', that means "didn't look like a
+ * number at all".
+ */
+err_t
+getbyte(srcp, stop, retp)
+const char **srcp;             /* *srcp is updated */
+const char *stop;              /* first untouchable char */
+int *retp;                     /* return-value pointer */
+{
+       char c;
+       const char *p;
+       int no;
+
+       if (*srcp >= stop)
+               return "?empty number in dotted-decimal address";
+
+       no = 0;
+       p = *srcp;
+       while (p < stop && no <= 255 && (c = *p) >= '0' && c <= '9') {
+               no = no*10 + (c - '0');
+               p++;
+       }
+       if (p == *srcp)
+               return "?non-numeric component in dotted-decimal address";
+       *srcp = p;
+       if (no > 255)
+               return "byte overflow in dotted-decimal address";
+       *retp = no;
+       return NULL;
+}
+
+/*
+ - colon - convert IPv6 "numeric" address
+ */
+static err_t
+colon(src, srclen, dst)
+const char *src;
+size_t srclen;                 /* known to be >0 */
+ip_address *dst;
+{
+       const char *stop = src + srclen;        /* just past end */
+       unsigned piece;
+       int gapat;              /* where was empty piece seen */
+       err_t oops;
+#      define  NPIECES 8
+       unsigned char buf[NPIECES*2];   /* short may have wrong byte order */
+       int i;
+       int j;
+#      define  IT      "IPv6 numeric address"
+       int naftergap;
+
+       /* leading or trailing :: becomes single empty field */
+       if (*src == ':') {              /* legal only if leading :: */
+               if (srclen == 1 || *(src+1) != ':')
+                       return "illegal leading `:' in " IT;
+               if (srclen == 2) {
+                       unspecaddr(AF_INET6, dst);
+                       return NULL;
+               }
+               src++;          /* past first but not second */
+               srclen--;
+       }
+       if (*(stop-1) == ':') {         /* legal only if trailing :: */
+               if (srclen == 1 || *(stop-2) != ':')
+                       return "illegal trailing `:' in " IT;
+               srclen--;               /* leave one */
+       }
+
+       gapat = -1;
+       for (i = 0; i < NPIECES && src < stop; i++) {
+               oops = getpiece(&src, stop, &piece);
+               if (oops != NULL && *oops == ':') {     /* empty field */
+                       if (gapat >= 0)
+                               return "more than one :: in " IT;
+                       gapat = i;
+               } else if (oops != NULL)
+                       return oops;
+               buf[2*i] = piece >> 8;
+               buf[2*i + 1] = piece & 0xff;
+               if (i < NPIECES-1) {    /* there should be more input */
+                       if (src == stop && gapat < 0)
+                               return IT " ends prematurely";
+                       if (src != stop && *src++ != ':')
+                               return "syntax error in " IT;
+               }
+       }
+       if (src != stop)
+               return "extra garbage on end of " IT;
+
+       if (gapat < 0 && i < NPIECES)   /* should have been caught earlier */
+               return "incomplete " IT " (internal error)";
+       if (gapat >= 0 && i == NPIECES)
+               return "non-abbreviating empty field in " IT;
+       if (gapat >= 0) {
+               naftergap = i - (gapat + 1);
+               for (i--, j = NPIECES-1; naftergap > 0; i--, j--, naftergap--) {
+                       buf[2*j] = buf[2*i];
+                       buf[2*j + 1] = buf[2*i + 1];
+               }
+               for (; j >= gapat; j--)
+                       buf[2*j] = buf[2*j + 1] = 0;
+       }
+
+       return initaddr(buf, sizeof(buf), AF_INET6, dst);
+}
+
+/*
+ - getpiece - try to scan one 16-bit piece of an IPv6 address
+ */
+err_t                          /* ":" means "empty field seen" */
+getpiece(srcp, stop, retp)
+const char **srcp;             /* *srcp is updated */
+const char *stop;              /* first untouchable char */
+unsigned *retp;                        /* return-value pointer */
+{
+       const char *p;
+#      define  NDIG    4
+       int d;
+       unsigned long ret;
+       err_t oops;
+
+       if (*srcp >= stop || **srcp == ':') {   /* empty field */
+               *retp = 0;
+               return ":";
+       }
+
+       p = *srcp;
+       d = 0;
+       while (p < stop && d < NDIG && isxdigit(*p)) {
+               p++;
+               d++;
+       }
+       if (d == 0)
+               return "non-hex field in IPv6 numeric address";
+       if (p < stop && d == NDIG && isxdigit(*p))
+               return "field in IPv6 numeric address longer than 4 hex digits";
+
+       oops = ttoul(*srcp, d, 16, &ret);
+       if (oops != NULL)       /* shouldn't happen, really... */
+               return oops;
+
+       *srcp = p;
+       *retp = ret;
+       return NULL;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/ttodata.c linux/net/ipsec/libfreeswan/ttodata.c
--- linux-noipsec/net/ipsec/libfreeswan/ttodata.c       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ttodata.c       Fri Aug 18 17:09:07 2000
@@ -0,0 +1,576 @@
+/*
+ * convert from text form of arbitrary data (e.g., keys) to binary
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/* converters */
+static int unhex(const char *, char *, size_t);
+static int unb64(const char *, char *, size_t);
+static int untext(const char *, char *, size_t);
+
+/* internal error codes for converters */
+#define        BADCHAR (-1)            /* invalid character */
+#define        SHORT   (-2)            /* string ended prematurely */
+#define        BADPAD  (-3)            /* bad base64 padding */
+
+/*
+ - ttodata - convert text to data
+ * If some of this looks slightly odd, it's because it has changed
+ * repeatedly (from the original atodata()) without a major rewrite.
+ */
+const char *                   /* NULL for success, else string literal */
+ttodata(src, srclen, base, dst, dstlen, lenp)
+const char *src;
+size_t srclen;                 /* 0 means apply strlen() */
+int base;                      /* 0 means figure it out */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+size_t *lenp;                  /* where to record length (NULL is nowhere) */
+{
+       size_t ingroup;         /* number of input bytes converted at once */
+       char buf[4];            /* output from conversion */
+       int nbytes;             /* size of output */
+       int (*decode)(const char *, char *, size_t);
+       char *stop;
+       int ndone;
+       int i;
+       int underscoreok;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (dstlen == 0)
+               dst = buf;      /* point it somewhere valid */
+       stop = dst + dstlen;
+
+       if (base == 0) {
+               if (srclen < 2)
+                       return "input too short to be valid";
+               if (*src++ != '0')
+                       return "input does not begin with format prefix";
+               switch (*src++) {
+               case 'x':
+               case 'X':
+                       base = 16;
+                       break;
+               case 's':
+               case 'S':
+                       base = 64;
+                       break;
+               case 't':
+               case 'T':
+                       base = 256;
+                       break;
+               default:
+                       return "unknown format prefix";
+                       break;
+               }
+               srclen -= 2;
+       }
+       switch (base) {
+       case 16:
+               ingroup = 2;
+               decode = unhex;
+               underscoreok = 1;
+               break;
+       case 64:
+               ingroup = 4;
+               decode = unb64;
+               underscoreok = 0;
+               break;
+       case 256:
+               ingroup = 1;
+               decode = untext;
+               underscoreok = 0;
+               break;
+       default:
+               return "unknown base";
+               break;
+       }
+
+       /* proceed */
+       ndone = 0;
+       while (srclen >= ingroup) {
+               nbytes = (*decode)(src, buf, sizeof(buf));
+               switch (nbytes) {
+               case BADCHAR:
+                       return "unknown character in input";
+                       break;
+               case SHORT:
+                       return "input ends prematurely, perhaps truncated";
+                       break;
+               case BADPAD:
+                       return "non-zero padding in base64 input";
+                       break;
+               }
+               if (nbytes <= 0)
+                       return "unknown internal error";
+               for (i = 0; i < nbytes; i++) {
+                       if (dst < stop)
+                               *dst++ = buf[i];
+                       ndone++;
+               }
+               src += ingroup;
+               srclen -= ingroup;
+               if (underscoreok && srclen > 1 && *src == '_') {
+                       /* srclen > 1 means not last character */
+                       src++;
+                       srclen--;
+               }
+       }
+       if (srclen != 0)
+               return "input ends in mid-byte, perhaps truncated";
+       if (ndone == 0)
+               return "no data bytes specified by input";
+       if (lenp != NULL)
+               *lenp = ndone;
+       return NULL;
+}
+
+/*
+ - atodata - convert ASCII to data
+ * backward-compatibility interface
+ */
+size_t                         /* 0 for failure, true length for success */
+atodata(src, srclen, dst, dstlen)
+const char *src;
+size_t srclen;
+char *dst;
+size_t dstlen;
+{
+       size_t len;
+       const char *err;
+
+       err = ttodata(src, srclen, 0, dst, dstlen, &len);
+       if (err != NULL)
+               return 0;
+       return len;
+}
+
+/*
+ - atobytes - convert ASCII to data bytes
+ * another backward-compatibility interface
+ */
+const char *
+atobytes(src, srclen, dst, dstlen, lenp)
+const char *src;
+size_t srclen;
+char *dst;
+size_t dstlen;
+size_t *lenp;
+{
+       return ttodata(src, srclen, 0, dst, dstlen, lenp);
+}
+
+/*
+ - unhex - convert two ASCII hex digits to byte
+ */
+static int             /* number of result bytes, or error code */
+unhex(src, dst, dstlen)
+const char *src;       /* known to be full length */
+char *dst;
+size_t dstlen;         /* not large enough is a failure */
+{
+       char *p;
+       unsigned byte;
+       static char hex[] = "0123456789abcdef";
+
+       if (dstlen < 1)
+               return SHORT;
+
+       p = strchr(hex, *src);
+       if (p == NULL)
+               p = strchr(hex, tolower(*src));
+       if (p == NULL)
+               return BADCHAR;
+       byte = (p - hex) << 4;
+       src++;
+
+       p = strchr(hex, *src);
+       if (p == NULL)
+               p = strchr(hex, tolower(*src));
+       if (p == NULL)
+               return BADCHAR;
+       byte |= (p - hex);
+
+       *dst = byte;
+       return 1;
+}
+
+/*
+ - unb64 - convert four ASCII base64 digits to three bytes
+ * Note that a base64 digit group is padded out with '=' if it represents
+ * less than three bytes:  one byte is dd==, two is ddd=, three is dddd.
+ */
+static int             /* number of result bytes, or error code */
+unb64(src, dst, dstlen)
+const char *src;       /* known to be full length */
+char *dst;
+size_t dstlen;
+{
+       char *p;
+       unsigned byte1;
+       unsigned byte2;
+       static char base64[] =
+       "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+       if (dstlen < 3)
+               return SHORT;
+
+       p = strchr(base64, *src++);
+       if (p == NULL)
+               return BADCHAR;
+       byte1 = (p - base64) << 2;      /* first six bits */
+
+       p = strchr(base64, *src++);
+       if (p == NULL)
+               return BADCHAR;
+       byte2 = p - base64;             /* next six:  two plus four */
+       *dst++ = byte1 | (byte2 >> 4);
+       byte1 = (byte2 & 0xf) << 4;
+
+       p = strchr(base64, *src++);
+       if (p == NULL) {
+               if (*(src-1) == '=' && *src == '=') {
+                       if (byte1 != 0)         /* bad padding */
+                               return BADPAD;
+                       return 1;
+               }
+               return BADCHAR;
+       }
+       byte2 = p - base64;             /* next six:  four plus two */
+       *dst++ = byte1 | (byte2 >> 2);
+       byte1 = (byte2 & 0x3) << 6;
+
+       p = strchr(base64, *src++);
+       if (p == NULL) {
+               if (*(src-1) == '=') {
+                       if (byte1 != 0)         /* bad padding */
+                               return BADPAD;
+                       return 2;
+               }
+               return BADCHAR;
+       }
+       byte2 = p - base64;             /* last six */
+       *dst++ = byte1 | byte2;
+       return 3;
+}
+
+/*
+ - untext - convert one ASCII character to byte
+ */
+static int             /* number of result bytes, or error code */
+untext(src, dst, dstlen)
+const char *src;       /* known to be full length */
+char *dst;
+size_t dstlen;         /* not large enough is a failure */
+{
+       if (dstlen < 1)
+               return SHORT;
+
+       *dst = *src;
+       return 1;
+}
+
+
+
+#ifdef TTODATA_MAIN
+
+#include <stdio.h>
+
+void regress();
+void hexout();
+
+/*
+ - main - convert first argument to hex, or run regression
+ */
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       char buf[1024];
+       char buf2[1024];
+       size_t n;
+       size_t i;
+       char *p = buf;
+       char *p2 = buf2;
+       char *pgm = argv[0];
+       const char *oops;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {0x<hex>|0s<base64>|-r}\n", pgm);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress(pgm);   /* should not return */
+               fprintf(stderr, "%s: regress() returned?!?\n", pgm);
+               exit(1);
+       }
+
+       oops = ttodata(argv[1], 0, 0, buf, sizeof(buf), &n);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: ttodata error `%s' in `%s'\n", pgm,
+                                                               oops, argv[1]);
+               exit(1);
+       }
+
+       if (n > sizeof(buf)) {
+               p = (char *)malloc((size_t)n);
+               if (p == NULL) {
+                       fprintf(stderr,
+                               "%s: unable to malloc %d bytes for result\n",
+                               pgm, n);
+                       exit(1);
+               }
+               oops = ttodata(argv[1], 0, 0, p, n, &n);
+               if (oops != NULL) {
+                       fprintf(stderr, "%s: error `%s' in ttodata retry?!?\n",
+                                                               pgm, oops);
+                       exit(1);
+               }
+       }
+
+       hexout(p, n, stdout);
+       printf("\n");
+
+       i = datatot(buf, n, 'h', buf2, sizeof(buf2));
+       if (i == 0) {
+               fprintf(stderr, "%s: datatot reports error in `%s'\n", pgm,
+                                                               argv[1]);
+               exit(1);
+       }
+
+       if (i > sizeof(buf2)) {
+               p2 = (char *)malloc((size_t)i);
+               if (p == NULL) {
+                       fprintf(stderr,
+                               "%s: unable to malloc %d bytes for result\n",
+                               pgm, i);
+                       exit(1);
+               }
+               i = datatot(buf, n, 'h', p2, i);
+               if (i == 0) {
+                       fprintf(stderr, "%s: error in datatoa retry?!?\n", pgm);
+                       exit(1);
+               }
+       }
+
+       printf("%s\n", p2);
+
+       exit(0);
+}
+
+/*
+ - hexout - output an arbitrary-length string in hex
+ */
+void
+hexout(s, len, f)
+const char *s;
+size_t len;
+FILE *f;
+{
+       size_t i;
+
+       fprintf(f, "0x");
+       for (i = 0; i < len; i++)
+               fprintf(f, "%02x", (unsigned char)s[i]);
+}
+
+struct artab {
+       int base;
+       char *ascii;            /* NULL for end */
+       char *data;             /* NULL for error expected */
+} atodatatab[] = {
+       0, "",                  NULL,
+       0, "0",                 NULL,
+       0, "0x",                NULL,
+       0, "0xa",               NULL,
+       0, "0xab",              "\xab",
+       0, "0xabc",             NULL,
+       0, "0xabcd",            "\xab\xcd",
+       0, "0x0123456789",      "\x01\x23\x45\x67\x89",
+       0, "0x01x",             NULL,
+       0, "0xabcdef",          "\xab\xcd\xef",
+       0, "0xABCDEF",          "\xab\xcd\xef",
+       0, "0XaBc0eEd81f",      "\xab\xc0\xee\xd8\x1f",
+       0, "0XaBc0_eEd8",       "\xab\xc0\xee\xd8",
+       0, "0XaBc0_",           NULL,
+       0, "0X_aBc0",           NULL,
+       0, "0Xa_Bc0",           NULL,
+       16, "aBc0_eEd8",        "\xab\xc0\xee\xd8",
+       0, "0s",                NULL,
+       0, "0sA",               NULL,
+       0, "0sBA",              NULL,
+       0, "0sCBA",             NULL,
+       0, "0sDCBA",            "\x0c\x20\x40",
+       0, "0SDCBA",            "\x0c\x20\x40",
+       0, "0sDA==",            "\x0c",
+       0, "0sDC==",            NULL,
+       0, "0sDCA=",            "\x0c\x20",
+       0, "0sDCB=",            NULL,
+       0, "0sDCAZ",            "\x0c\x20\x19",
+       0, "0sDCAa",            "\x0c\x20\x1a",
+       0, "0sDCAz",            "\x0c\x20\x33",
+       0, "0sDCA0",            "\x0c\x20\x34",
+       0, "0sDCA9",            "\x0c\x20\x3d",
+       0, "0sDCA+",            "\x0c\x20\x3e",
+       0, "0sDCA/",            "\x0c\x20\x3f",
+       0, "0sAbraCadabra+",    "\x01\xba\xda\x09\xa7\x5a\x6e\xb6\xbe",
+       64, "AbraCadabra+",     "\x01\xba\xda\x09\xa7\x5a\x6e\xb6\xbe",
+       0, "0t",                NULL,
+       0, "0tabc_xyz",         "abc_xyz",
+       256, "abc_xyz",         "abc_xyz",
+       0, NULL,                NULL,
+};
+
+struct drtab {
+       char *data;     /* input; NULL for end */
+       char format;
+       int buflen;     /* -1 means big buffer */
+       int outlen;     /* -1 means strlen(ascii)+1 */
+       char *ascii;    /* NULL for error expected */
+} datatoatab[] = {
+       "",                     'x',    -1,     -1,     NULL,
+       "",                     'X',    -1,     -1,     NULL,
+       "",                     'n',    -1,     -1,     NULL,
+       "0",                    'x',    -1,     -1,     "0x30",
+       "0",                    'x',    0,      5,      "---",
+       "0",                    'x',    1,      5,      "",
+       "0",                    'x',    2,      5,      "0",
+       "0",                    'x',    3,      5,      "0x",
+       "0",                    'x',    4,      5,      "0x3",
+       "0",                    'x',    5,      5,      "0x30",
+       "0",                    'x',    6,      5,      "0x30",
+       "\xab\xcd",             'x',    -1,     -1,     "0xabcd",
+       "\x01\x23\x45\x67\x89", 'x',    -1,     -1,     "0x0123456789",
+       "\xab\xcd\xef",         'x',    -1,     -1,     "0xabcdef",
+       "\xab\xc0\xee\xd8\x1f", 'x',    -1,     -1,     "0xabc0eed81f",
+       "\x01\x02",             'h',    -1,     -1,     "0x0102",
+       "\x01\x02\x03\x04\x05\x06",     'h',    -1, -1, "0x01020304_0506",
+       "\xab\xc0\xee\xd8\x1f", 16,     -1,     -1,     "abc0eed81f",
+       "\x0c\x20\x40",         's',    -1,     -1,     "0sDCBA",
+       "\x0c\x20\x40",         's',    0,      7,      "---",
+       "\x0c\x20\x40",         's',    1,      7,      "",
+       "\x0c\x20\x40",         's',    2,      7,      "0",
+       "\x0c\x20\x40",         's',    3,      7,      "0s",
+       "\x0c\x20\x40",         's',    4,      7,      "0sD",
+       "\x0c\x20\x40",         's',    5,      7,      "0sDC",
+       "\x0c\x20\x40",         's',    6,      7,      "0sDCB",
+       "\x0c\x20\x40",         's',    7,      7,      "0sDCBA",
+       "\x0c\x20\x40",         's',    8,      7,      "0sDCBA",
+       "\x0c",                 's',    -1,     -1,     "0sDA==",
+       "\x0c\x20",             's',    -1,     -1,     "0sDCA=",
+       "\x0c\x20\x19",         's',    -1,     -1,     "0sDCAZ",
+       "\x0c\x20\x1a",         's',    -1,     -1,     "0sDCAa",
+       "\x0c\x20\x33",         's',    -1,     -1,     "0sDCAz",
+       "\x0c\x20\x34",         's',    -1,     -1,     "0sDCA0",
+       "\x0c\x20\x3d",         's',    -1,     -1,     "0sDCA9",       
+       "\x0c\x20\x3e",         's',    -1,     -1,     "0sDCA+",
+       "\x0c\x20\x3f",         's',    -1,     -1,     "0sDCA/",       
+       "\x01\xba\xda\x09\xa7\x5a\x6e\xb6\xbe", 's', -1, -1, "0sAbraCadabra+",
+       "\x01\xba\xda\x09\xa7\x5a\x6e\xb6\xbe", 64, -1, -1, "AbraCadabra+",
+       NULL,                   'x',    -1,     -1,     NULL,
+};
+
+/*
+ - regress - regression-test ttodata() and datatot()
+ */
+void                   /* should not return at all, in fact */
+regress(pgm)
+char *pgm;
+{
+       struct artab *r;
+       struct drtab *dr;
+       char buf[100];
+       size_t n;
+       int status = 0;
+       size_t should;
+       const char *oops;
+
+       for (r = atodatatab; r->ascii != NULL; r++) {
+               oops = ttodata(r->ascii, 0, r->base, buf, sizeof(buf), &n);
+               if (oops != NULL && r->data == NULL)
+                       {}                      /* error expected */
+               else if (oops != NULL) {
+                       printf("`%s' gave error `%s', expecting %d `", r->ascii,
+                                                       oops, strlen(r->data));
+                       hexout(r->data, strlen(r->data), stdout);
+                       printf("'\n");
+                       status = 1;
+               } else if (r->data == NULL) {
+                       printf("`%s' gave %d `", r->ascii, n);
+                       hexout(buf, n, stdout);
+                       printf("', expecting error\n");
+                       status = 1;
+               } else if (n != strlen(r->data)) {
+                       printf("length wrong in `%s': got %d `", r->ascii, n);
+                       hexout(buf, n, stdout);
+                       printf("', expecting %d `", strlen(r->data));
+                       hexout(r->data, strlen(r->data), stdout);
+                       printf("'\n");
+                       status = 1;
+               } else if (memcmp(buf, r->data, n) != 0) {
+                       printf("`%s' gave %d `", r->ascii, n);
+                       hexout(buf, n, stdout);
+                       printf("', expecting %d `", strlen(r->data));
+                       hexout(r->data, strlen(r->data), stdout);
+                       printf("'\n");
+                       status = 1;
+               }
+               fflush(stdout);
+       }
+       for (dr = datatoatab; dr->data != NULL; dr++) {
+               strcpy(buf, "---");
+               n = datatot(dr->data, strlen(dr->data), dr->format, buf,
+                               (dr->buflen == -1) ? sizeof(buf) : dr->buflen);
+               should = (dr->ascii == NULL) ? 0 : strlen(dr->ascii) + 1;
+               if (dr->outlen != -1)
+                       should = dr->outlen;
+               if (n == 0 && dr->ascii == NULL)
+                       {}                      /* error expected */
+               else if (n == 0) {
+                       printf("`");
+                       hexout(dr->data, strlen(dr->data), stdout);
+                       printf("' %c gave error, expecting %d `%s'\n",
+                               dr->format, should, dr->ascii);
+                       status = 1;
+               } else if (dr->ascii == NULL) {
+                       printf("`");
+                       hexout(dr->data, strlen(dr->data), stdout);
+                       printf("' %c gave %d `%.*s', expecting error\n",
+                               dr->format, n, n, buf);
+                       status = 1;
+               } else if (n != should) {
+                       printf("length wrong in `");
+                       hexout(dr->data, strlen(dr->data), stdout);
+                       printf("': got %d `%s'", n, buf);
+                       printf(", expecting %d `%s'\n", should, dr->ascii);
+                       status = 1;
+               } else if (strcmp(buf, dr->ascii) != 0) {
+                       printf("`");
+                       hexout(dr->data, strlen(dr->data), stdout);
+                       printf("' gave %d `%s'", n, buf);
+                       printf(", expecting %d `%s'\n", should, dr->ascii);
+                       status = 1;
+               }
+               fflush(stdout);
+       }
+       exit(status);
+}
+
+#endif /* TTODATA_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/ttosa.c linux/net/ipsec/libfreeswan/ttosa.c
--- linux-noipsec/net/ipsec/libfreeswan/ttosa.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ttosa.c Fri Sep 15 21:20:33 2000
@@ -0,0 +1,250 @@
+/*
+ * convert from text form of SA ID to binary
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static struct satype {
+       char *prefix;
+       size_t prelen;          /* strlen(prefix) */
+       int proto;
+} satypes[] = {
+       { "ah",         2,      SA_AH   },
+       { "esp",        3,      SA_ESP  },
+       { "tun",        3,      SA_IPIP },
+       { "comp",       4,      SA_COMP },
+       { NULL,         0,      0,      }
+};
+
+/*
+ - ttosa - convert text "ah507@10.0.0.1" to SA identifier
+ */
+err_t                          /* NULL for success, else string literal */
+ttosa(src, srclen, sa)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+ip_said *sa;
+{
+       const char *at;
+       const char *addr;
+       size_t alen;
+       const char *spi = NULL;
+       struct satype *sat;
+       unsigned long ul;
+       const char *oops;
+#      define  MINLEN  5       /* ah0@0 is as short as it can get */
+       static char ptname[] = PASSTHROUGHNAME;
+#      define  PTNLEN  (sizeof(ptname)-1)      /* -1 for NUL */
+       static char pt4name[] = PASSTHROUGH4NAME;
+#      define  PT4NLEN (sizeof(pt4name)-1)     /* -1 for NUL */
+       static char pt6name[] = PASSTHROUGH6NAME;
+#      define  PT6NLEN (sizeof(pt6name)-1)     /* -1 for NUL */
+       int af;
+       int base;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+       if (srclen < MINLEN)
+               return "string too short to be SA identifier";
+       if (srclen == PTNLEN && memcmp(src, ptname, PTNLEN) == 0) {
+               src = PASSTHROUGH4IS;
+               srclen = strlen(src);
+       } else if (srclen == PT4NLEN && memcmp(src, pt4name, PT4NLEN) == 0) {
+               src = PASSTHROUGH4IS;
+               srclen = strlen(src);
+       } else if (srclen == PT6NLEN && memcmp(src, pt6name, PT6NLEN) == 0) {
+               src = PASSTHROUGH6IS;
+               srclen = strlen(src);
+       }
+
+       at = memchr(src, '@', srclen);
+       if (at == NULL)
+               return "no @ in SA specifier";
+
+       for (sat = satypes; sat->prefix != NULL; sat++)
+               if (sat->prelen < srclen &&
+                               strncmp(src, sat->prefix, sat->prelen) == 0) {
+                       sa->proto = sat->proto;
+                       spi = src + sat->prelen;
+                       break;                  /* NOTE BREAK OUT */
+               }
+       if (sat->prefix == NULL)
+               return "SA specifier lacks valid protocol prefix";
+
+       if (spi >= at)
+               return "no SPI in SA specifier";
+       switch (*spi) {
+       case '.':
+               af = AF_INET;
+               spi++;
+               base = 16;
+               break;
+       case ':':
+               af = AF_INET6;
+               spi++;
+               base = 16;
+               break;
+       default:
+               af = AF_UNSPEC;         /* not known yet */
+               base = 0;
+               break;
+       }
+       if (spi >= at)
+               return "no SPI found in SA specifier";
+       oops = ttoul(spi, at - spi, base, &ul);
+       if (oops != NULL)
+               return oops;
+       sa->spi = htonl(ul);
+
+       addr = at + 1;
+       alen = srclen - (addr - src);
+       if (af == AF_UNSPEC)
+               af = (memchr(addr, ':', alen) != NULL) ? AF_INET6 : AF_INET;
+       oops = ttoaddr(addr, alen, af, &sa->dst);
+       if (oops != NULL)
+               return oops;
+
+       return NULL;
+}
+
+
+
+#ifdef TTOSA_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       ip_said sa;
+       char buf[100];
+       char buf2[100];
+       const char *oops;
+       size_t n;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {ahnnn@aaa|-r}\n", argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       oops = ttosa(argv[1], 0, &sa);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       n = satot(&sa, 0, buf, sizeof(buf));
+       if (n > sizeof(buf)) {
+               fprintf(stderr, "%s: reverse conv of `%d'", argv[0], sa.proto);
+               fprintf(stderr, "%lx@", sa.spi);
+               (void) addrtot(&sa.dst, 0, buf2, sizeof(buf2));
+               fprintf(stderr, "%s", buf2);
+               fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+                                               (long)n, (long)sizeof(buf));
+               exit(1);
+       }
+       printf("%s\n", buf);
+
+       exit(0);
+}
+
+struct rtab {
+       int format;
+       char *input;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       0, "esp257@1.2.3.0",            "esp.101@1.2.3.0",
+       0, "ah0x20@1.2.3.4",            "ah.20@1.2.3.4",
+       0, "tun20@1.2.3.4",             "tun.14@1.2.3.4",
+       0, "comp20@1.2.3.4",            "comp.14@1.2.3.4",
+       0, "esp257@::1",                "esp:101@::1",
+       0, "esp257@0bc:12de::1",        "esp:101@bc:12de::1",
+       0, "esp78@1049:1::8007:2040",   "esp:4e@1049:1::8007:2040",
+       0, "esp0x78@1049:1::8007:2040", "esp:78@1049:1::8007:2040",
+       0, "ah78@1049:1::8007:2040",    "ah:4e@1049:1::8007:2040",
+       0, "ah0x78@1049:1::8007:2040",  "ah:78@1049:1::8007:2040",
+       0, "tun78@1049:1::8007:2040",   "tun:4e@1049:1::8007:2040",
+       0, "tun0x78@1049:1::8007:2040", "tun:78@1049:1::8007:2040",
+       0, "duk99@3ffe:370:400:ff::9001:3001",  NULL,
+       0, "esp78x@1049:1::8007:2040",  NULL,
+       0, "esp0x78@1049:1:0xfff::8007:2040",   NULL,
+       0, "es78@1049:1::8007:2040",    NULL,
+       0, "",                          NULL,
+       0, "_",                         NULL,
+       0, "ah2.2",                     NULL,
+       0, "goo2@1.2.3.4",              NULL,
+       0, "esp9@1.2.3.4",              "esp.9@1.2.3.4",
+       'f', "esp0xa9@1.2.3.4",         "esp.000000a9@1.2.3.4",
+       0, "espp9@1.2.3.4",             NULL,
+       0, "es9@1.2.3.4",               NULL,
+       0, "ah@1.2.3.4",                NULL,
+       0, "esp7x7@1.2.3.4",            NULL,
+       0, "esp77@1.0x2.3.4",           NULL,
+       0, PASSTHROUGHNAME,             PASSTHROUGH4NAME,
+       0, NULL,                        NULL
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       ip_said sa;
+       char in[100];
+       char buf[100];
+       const char *oops;
+       size_t n;
+
+       for (r = rtab; r->input != NULL; r++) {
+               strcpy(in, r->input);
+               oops = ttosa(in, 0, &sa);
+               if (oops != NULL && r->output == NULL)
+                       {}              /* okay, error expected */
+               else if (oops != NULL) {
+                       printf("`%s' ttosa failed: %s\n", r->input, oops);
+                       status = 1;
+               } else if (r->output == NULL) {
+                       printf("`%s' ttosa succeeded unexpectedly\n",
+                                                               r->input);
+                       status = 1;
+               } else {
+                       n = satot(&sa, r->format, buf, sizeof(buf));
+                       if (n > sizeof(buf)) {
+                               printf("`%s' satot failed:  need %ld\n",
+                                                       r->input, (long)n);
+                               status = 1;
+                       } else if (strcmp(r->output, buf) != 0) {
+                               printf("`%s' gave `%s', expected `%s'\n",
+                                               r->input, buf, r->output);
+                               status = 1;
+                       }
+               }
+       }
+       exit(status);
+}
+
+#endif /* TTOSA_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/ttosubnet.c linux/net/ipsec/libfreeswan/ttosubnet.c
--- linux-noipsec/net/ipsec/libfreeswan/ttosubnet.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ttosubnet.c     Thu Aug 17 06:14:27 2000
@@ -0,0 +1,275 @@
+/*
+ * convert from text form of subnet specification to binary
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+#ifndef DEFAULTSUBNET
+#define        DEFAULTSUBNET   "%default"
+#endif
+
+/*
+ - ttosubnet - convert text "addr/mask" to address and mask
+ * Mask can be integer bit count.
+ */
+err_t
+ttosubnet(src, srclen, af, dst)
+const char *src;
+size_t srclen;                 /* 0 means "apply strlen" */
+int af;                                /* AF_INET or AF_INET6 */
+ip_subnet *dst;
+{
+       const char *slash;
+       const char *mask;
+       size_t mlen;
+       const char *oops;
+       unsigned long bc;
+       static char def[] = DEFAULTSUBNET;
+#      define  DEFLEN  (sizeof(def) - 1)       /* -1 for NUL */
+       static char defis4[] = "0/0";
+#      define  DEFIS4LEN       (sizeof(defis4) - 1)
+       static char defis6[] = "::/0";
+#      define  DEFIS6LEN       (sizeof(defis6) - 1)
+       ip_address addrtmp;
+       ip_address masktmp;
+       int nbits;
+       int i;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+
+       switch (af) {
+       case AF_INET:
+               nbits = 32;
+               break;
+       case AF_INET6:
+               nbits = 128;
+               break;
+       default:
+               return "unknown address family in ttosubnet";
+               break;
+       }
+
+       if (srclen == DEFLEN && strncmp(src, def, srclen) == 0) {
+               src = (af == AF_INET) ? defis4 : defis6;
+               srclen = (af == AF_INET) ? DEFIS4LEN : DEFIS6LEN;
+       }
+
+       slash = memchr(src, '/', srclen);
+       if (slash == NULL)
+               return "no / in subnet specification";
+       mask = slash + 1;
+       mlen = srclen - (mask - src);
+
+       oops = ttoaddr(src, slash-src, af, &addrtmp);
+       if (oops != NULL)
+               return oops;
+
+       oops = ttoul(mask, mlen, 10, &bc);
+       if (oops == NULL) {
+               /* ttoul succeeded, it's a bit-count mask */
+               if (bc > nbits)
+                       return "subnet mask bit count too large";
+               i = bc;
+       } else {
+               oops = ttoaddr(mask, mlen, af, &masktmp);
+               if (oops != NULL)
+                       return oops;
+               i = masktocount(&masktmp);
+               if (i < 0)
+                       return "non-contiguous or otherwise erroneous mask";
+       }
+
+       return initsubnet(&addrtmp, i, '0', dst);
+}
+
+
+
+#ifdef TTOSUBNET_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       ip_address a;
+       ip_subnet s;
+       char buf[100];
+       char buf2[100];
+       const char *oops;
+       size_t n;
+       int af;
+       char *p;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s [-6] addr/mask\n", argv[0]);
+               fprintf(stderr, "   or: %s -r\n", argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       af = AF_INET;
+       p = argv[1];
+       if (strcmp(argv[1], "-6") == 0) {
+               af = AF_INET6;
+               p = argv[2];
+       } else if (strchr(argv[1], ':') != NULL)
+               af = AF_INET6;
+
+       oops = ttosubnet(p, 0, af, &s);
+       if (oops != NULL) {
+               fprintf(stderr, "%s: conversion failed: %s\n", argv[0], oops);
+               exit(1);
+       }
+       n = subnettot(&s, 0, buf, sizeof(buf));
+       if (n > sizeof(buf)) {
+               fprintf(stderr, "%s: reverse conversion of ", argv[0]);
+               (void) addrtot(&s.addr, 0, buf2, sizeof(buf2));
+               fprintf(stderr, "%s/", buf2);
+               fprintf(stderr, "%d", s.maskbits);
+               fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+                                               (long)n, (long)sizeof(buf));
+               exit(1);
+       }
+       printf("%s\n", buf);
+
+       exit(0);
+}
+
+struct rtab {
+       int family;
+       char *input;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       4, "1.2.3.0/255.255.255.0",     "1.2.3.0/24",
+       4, "1.2.3.0/24",                "1.2.3.0/24",
+       4, "1.2.3.1/255.255.255.240",   "1.2.3.0/28",
+       4, "1.2.3.1/32",                "1.2.3.1/32",
+       4, "1.2.3.1/0",                 "0.0.0.0/0",
+/*     4, "1.2.3.1/255.255.127.0",     "1.2.3.0/255.255.127.0",        */
+       4, "1.2.3.1/255.255.127.0",     NULL,
+       4, "128.009.000.032/32",        "128.9.0.32/32",
+       4, "128.0x9.0.32/32",           NULL,
+       4, "0x80090020/32",             "128.9.0.32/32",
+       4, "0x800x0020/32",             NULL,
+       4, "128.9.0.32/0xffFF0000",     "128.9.0.0/16",
+       4, "128.9.0.32/0xff0000FF",     NULL,
+       4, "128.9.0.32/0x0000ffFF",     NULL,
+       4, "128.9.0.32/0x00ffFF0000",   NULL,
+       4, "128.9.0.32/0xffFF",         NULL,
+       4, "128.9.0.32.27/32",          NULL,
+       4, "128.9.0k32/32",             NULL,
+       4, "328.9.0.32/32",             NULL,
+       4, "128.9..32/32",              NULL,
+       4, "10/8",                      "10.0.0.0/8",
+       4, "10.0/8",                    "10.0.0.0/8",
+       4, "10.0.0/8",                  "10.0.0.0/8",
+       4, "10.0.1/24",                 "10.0.1.0/24",
+       4, "_",                         NULL,
+       4, "_/_",                       NULL,
+       4, "1.2.3.1",                   NULL,
+       4, "1.2.3.1/_",                 NULL,
+       4, "1.2.3.1/24._",              NULL,
+       4, "1.2.3.1/99",                NULL,
+       4, "localhost./32",             "127.0.0.1/32",
+       4, "%default",                  "0.0.0.0/0",
+       6, "3049:1::8007:2040/0",       "::/0",
+       6, "3049:1::8007:2040/128",     "3049:1::8007:2040/128",
+       6, "3049:1::192.168.0.1/128", NULL,     /*"3049:1::c0a8:1/128",*/
+       6, "3049:1::8007::2040/128",    NULL,
+       6, "3049:1::8007:2040/ffff::0", "3049::/16",
+       6, "3049:1::8007:2040/64",      "3049:1::/64",
+       6, "3049:1::8007:2040/ffff::",  "3049::/16",
+       6, "3049:1::8007:2040/0000:ffff::0",    NULL,
+       6, "3049:1::8007:2040/ff1f::0", NULL,
+       6, "3049:1::8007:x:2040/128",   NULL,
+       6, "3049:1t::8007:2040/128",    NULL,
+       6, "3049:1::80071:2040/128",    NULL,
+       6, "::/21",                     "::/21",
+       6, "::1/128",                   "::1/128",
+       6, "1::/21",                    "1::/21",
+       6, "1::2/128",                  "1::2/128",
+       6, "1:0:0:0:0:0:0:2/128",       "1::2/128",
+       6, "1:0:0:0:3:0:0:2/128",       "1::3:0:0:2/128",
+       6, "1:0:0:3:0:0:0:2/128",       "1::3:0:0:0:2/128",
+       6, "1:0:3:0:0:0:0:2/128",       "1:0:3::2/128",
+       6, "abcd:ef01:2345:6789:0:00a:000:20/128",      "abcd:ef01:2345:6789:0:a:0:20/128",
+       6, "3049:1::8007:2040/ffff:ffff:",      NULL,
+       6, "3049:1::8007:2040/ffff:88::",       NULL,
+       6, "3049:12::9000:3200/ffff:fff0::",    "3049:10::/28",
+       6, "3049:12::9000:3200/28",     "3049:10::/28",
+       6, "3049:12::9000:3200/ff00:::",        NULL,
+       6, "3049:12::9000:3200/ffff:::",        NULL,
+       6, "3049:12::9000:3200/128_",   NULL,
+       6, "3049:12::9000:3200/",       NULL,
+       6, "%default",                  "::/0",
+       4, NULL,                        NULL
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       ip_address a;
+       ip_subnet s;
+       char in[100];
+       char buf[100];
+       const char *oops;
+       size_t n;
+       int af;
+
+       for (r = rtab; r->input != NULL; r++) {
+               af = (r->family == 4) ? AF_INET : AF_INET6;
+               strcpy(in, r->input);
+               oops = ttosubnet(in, 0, af, &s);
+               if (oops != NULL && r->output == NULL)
+                       {}              /* okay, error expected */
+               else if (oops != NULL) {
+                       printf("`%s' ttosubnet failed: %s\n", r->input, oops);
+                       status = 1;
+               } else if (r->output == NULL) {
+                       printf("`%s' ttosubnet succeeded unexpectedly\n",
+                                                               r->input);
+                       status = 1;
+               } else {
+                       n = subnettot(&s, 0, buf, sizeof(buf));
+                       if (n > sizeof(buf)) {
+                               printf("`%s' subnettot failed:  need %ld\n",
+                                                       r->input, (long)n);
+                               status = 1;
+                       } else if (strcmp(r->output, buf) != 0) {
+                               printf("`%s' gave `%s', expected `%s'\n",
+                                               r->input, buf, r->output);
+                               status = 1;
+                       }
+               }
+       }
+       exit(status);
+}
+
+#endif /* TTOSUBNET_MAIN */
diff -druN linux-noipsec/net/ipsec/libfreeswan/ttoul.c linux/net/ipsec/libfreeswan/ttoul.c
--- linux-noipsec/net/ipsec/libfreeswan/ttoul.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ttoul.c Thu Aug 17 01:07:16 2000
@@ -0,0 +1,91 @@
+/*
+ * convert from text form of unsigned long to binary
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - ttoul - convert text substring to unsigned long number
+ */
+const char *                   /* NULL for success, else string literal */
+ttoul(src, srclen, base, resultp)
+const char *src;
+size_t srclen;                 /* 0 means strlen(src) */
+int base;                      /* 0 means figure it out */
+unsigned long *resultp;
+{
+       const char *stop;
+       static char hex[] = "0123456789abcdef";
+       static char uchex[] = "0123456789ABCDEF";
+       int d;
+       char c;
+       char *p;
+       unsigned long r;
+       unsigned long rlimit;
+       int dlimit;
+
+       if (srclen == 0)
+               srclen = strlen(src);
+       if (srclen == 0)
+               return "empty string";
+
+       if (base == 0) {
+               if (srclen > 2 && *src == '0' &&
+                                       (*(src+1) == 'x' || *(src+1) == 'X'))
+                       return ttoul(src+2, srclen-2, 16, resultp);
+               if (srclen > 1 && *src == '0')
+                       return ttoul(src+1, srclen-1, 8, resultp);
+               return ttoul(src, srclen, 10, resultp);
+       }
+       if (base != 8 && base != 10 && base != 16)
+               return "unsupported number base";
+
+       r = 0;
+       stop = src + srclen;
+       if (base == 16) {
+               while (src < stop) {
+                       c = *src++;
+                       p = strchr(hex, c);
+                       if (p != NULL)
+                               d = p - hex;
+                       else {
+                               p = strchr(uchex, c);
+                               if (p == NULL)
+                                       return "non-hex digit in hex number";
+                               d = p - uchex;
+                       }
+                       r = (r << 4) | d;
+               }
+               /* defer length check to catch invalid digits first */
+               if (srclen > sizeof(unsigned long) * 2)
+                       return "hex number too long";
+       } else {
+               rlimit = ULONG_MAX / base;
+               dlimit = (int)(ULONG_MAX - rlimit*base);
+               while (src < stop) {
+                       c = *src++;
+                       d = c - '0';
+                       if (d < 0 || d >= base)
+                               return "non-digit in number";
+                       if (r > rlimit || (r == rlimit && d > dlimit))
+                               return "unsigned-long overflow";
+                       r = r*base + d;
+               }
+       }
+
+       *resultp = r;
+       return NULL;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/ultoa.c linux/net/ipsec/libfreeswan/ultoa.c
--- linux-noipsec/net/ipsec/libfreeswan/ultoa.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ultoa.c Wed Oct 13 20:09:06 1999
@@ -0,0 +1,67 @@
+/*
+ * convert unsigned long to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - ultoa - convert unsigned long to decimal ASCII
+ */
+size_t                         /* length required for full conversion */
+ultoa(n, base, dst, dstlen)
+unsigned long n;
+int base;
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       char buf[3*sizeof(unsigned long) + 1];
+       char *bufend = buf + sizeof(buf);
+       size_t len;
+       char *p;
+       static char hex[] = "0123456789abcdef";
+
+       p = bufend;
+       *--p = '\0';
+       if (base == 10) {
+               do {
+                       *--p = n%10 + '0';
+                       n /= 10;
+               } while (n != 0);
+       } else if (base == 16) {
+               do {
+                       *--p = hex[n&0xf];
+                       n >>= 4;
+               } while (n != 0);
+               *--p = 'x';
+               *--p = '0';
+       } else if (base == 8) {
+               do {
+                       *--p = (n&07) + '0';
+                       n >>= 3;
+               } while (n != 0);
+               *--p = '0';
+       } else
+               *--p = '?';
+
+       len = bufend - p;
+
+       if (dstlen > 0) {
+               if (len > dstlen)
+                       *(p + dstlen - 1) = '\0';
+               strcpy(dst, p);
+       }
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/libfreeswan/ultot.c linux/net/ipsec/libfreeswan/ultot.c
--- linux-noipsec/net/ipsec/libfreeswan/ultot.c Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/libfreeswan/ultot.c Thu Aug 17 01:07:16 2000
@@ -0,0 +1,83 @@
+/*
+ * convert unsigned long to text
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id$
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - ultot - convert unsigned long to text
+ */
+size_t                         /* length required for full conversion */
+ultot(n, base, dst, dstlen)
+unsigned long n;
+int base;
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       char buf[3*sizeof(unsigned long) + 1];
+       char *bufend = buf + sizeof(buf);
+       size_t len;
+       char *p;
+       static char hex[] = "0123456789abcdef";
+#      define  HEX32   (32/4)
+
+       p = bufend;
+       *--p = '\0';
+       switch (base) {
+       case 10:
+       case 'd':
+               do {
+                       *--p = n%10 + '0';
+                       n /= 10;
+               } while (n != 0);
+               break;
+       case 16:
+       case 17:
+       case 'x':
+               do {
+                       *--p = hex[n&0xf];
+                       n >>= 4;
+               } while (n != 0);
+               if (base == 17)
+                       while (bufend - p < HEX32 + 1)
+                               *--p = '0';
+               if (base == 'x') {
+                       *--p = 'x';
+                       *--p = '0';
+               }
+               break;
+       case 8:
+       case 'o':
+               do {
+                       *--p = (n&07) + '0';
+                       n >>= 3;
+               } while (n != 0);
+               if (base == 'o')
+                       *--p = '0';
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = bufend - p;
+       if (dstlen > 0) {
+               if (len > dstlen)
+                       *(p + dstlen - 1) = '\0';
+               strcpy(dst, p);
+       }
+       return len;
+}
diff -druN linux-noipsec/net/ipsec/pfkey_v2.c linux/net/ipsec/pfkey_v2.c
--- linux-noipsec/net/ipsec/pfkey_v2.c  Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/pfkey_v2.c  Mon Nov  6 05:33:47 2000
@@ -0,0 +1,1891 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API domain socket I/F
+ * Copyright (C) 1999, 2000  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/*
+ *             Template from /usr/src/linux-2.0.36/net/unix/af_unix.c.
+ *             Hints from /usr/src/linux-2.0.36/net/ipv4/udp.c.
+ */
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/version.h>
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/socket.h>
+#include <linux/un.h>
+#include <linux/fcntl.h>
+#include <linux/termios.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/net.h> /* struct socket */
+#include <linux/in.h>
+#include <linux/fs.h>
+#include <linux/malloc.h>
+#include <asm/segment.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <net/sock.h> /* struct sock */
+/* #include <net/tcp.h> */
+#include <net/af_unix.h>
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#endif /* CONFIG_PROC_FS */
+
+#include <linux/types.h>
+ 
+#include <freeswan.h>
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#endif /* NET_21 */
+#include <pfkeyv2.h>
+#include <pfkey.h>
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_netlink.h"
+
+#ifdef CONFIG_IPSEC_DEBUG
+int debug_pfkey = 0;
+extern int sysctl_ipsec_debug_verbose;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#define min(a,b)       (((a)<(b))?(a):(b))
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+#ifndef SOCKOPS_WRAPPED
+#define SOCKOPS_WRAPPED(name) name
+#endif
+
+struct proto_ops SOCKOPS_WRAPPED(pfkey_ops);
+struct sock *pfkey_sock_list = NULL;
+struct supported_list *pfkey_supported_list[SADB_SATYPE_MAX+1];
+
+struct socket_list *pfkey_open_sockets = NULL;
+struct socket_list *pfkey_registered_sockets[SADB_SATYPE_MAX+1];
+
+int pfkey_msg_interp(struct sock *, struct sadb_msg *, struct sadb_msg **);
+
+int
+pfkey_list_remove_socket(struct socket *socketp, struct socket_list **sockets)
+{
+       struct socket_list *socket_listp,*prev;
+
+       if(!socketp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_socket: "
+                           "NULL socketp handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!sockets) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_socket: "
+                           "NULL sockets list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       socket_listp = *sockets;
+       prev = NULL;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_remove_socket: "
+                   "removing sock=%p\n",
+                   socketp);
+       
+       while(socket_listp != NULL) {
+               if(socket_listp->socketp == socketp) {
+                       if(prev != NULL) {
+                               prev->next = socket_listp->next;
+                       } else {
+                               *sockets = socket_listp->next;
+                       }
+                       
+                       kfree((void*)socket_listp);
+                       
+                       break;
+               }
+               prev = socket_listp;
+               socket_listp = socket_listp->next;
+       }
+
+       return 0;
+}
+
+int
+pfkey_list_insert_socket(struct socket *socketp, struct socket_list **sockets)
+{
+       struct socket_list *socket_listp;
+
+       if(!socketp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_socket: "
+                           "NULL socketp handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!sockets) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_socket: "
+                           "NULL sockets list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_insert_socket: "
+                   "socketp=%p\n",socketp);
+       
+       if((socket_listp = (struct socket_list *)kmalloc(sizeof(struct socket_list), GFP_KERNEL)) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_socket: "
+                           "memory allocation error.\n");
+               return -ENOMEM;
+       }
+       
+       socket_listp->socketp = socketp;
+       socket_listp->next = *sockets;
+       *sockets = socket_listp;
+
+       return 0;
+}
+  
+int
+pfkey_list_remove_supported(struct supported *supported, struct supported_list **supported_list)
+{
+       struct supported_list *supported_listp = *supported_list, *prev = NULL;
+       
+       if(!supported) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_supported: "
+                           "NULL supported handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!supported_list) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_supported: "
+                           "NULL supported_list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_remove_supported: "
+                   "removing supported=%p\n",
+                   supported);
+       
+       while(supported_listp != NULL) {
+               if(supported_listp->supportedp == supported) {
+                       if(prev != NULL) {
+                               prev->next = supported_listp->next;
+                       } else {
+                               *supported_list = supported_listp->next;
+                       }
+                       
+                       kfree((void*)supported_listp);
+                       
+                       break;
+               }
+               prev = supported_listp;
+               supported_listp = supported_listp->next;
+       }
+
+       return 0;
+}
+
+int
+pfkey_list_insert_supported(struct supported *supported, struct supported_list **supported_list)
+{
+       struct supported_list *supported_listp;
+
+       if(!supported) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_supported: "
+                           "NULL supported handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!supported_list) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_supported: "
+                           "NULL supported_list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_insert_supported: "
+                   "incoming, supported=%p, supported_list=%p\n",
+                   supported,
+                   supported_list);
+       
+       supported_listp = (struct supported_list *)kmalloc(sizeof(struct supported_list), GFP_KERNEL);
+       if(supported_listp == NULL)     {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_supported: "
+                           "memory allocation error.\n");
+               return -ENOMEM;
+       }
+       
+       supported_listp->supportedp = supported;
+       supported_listp->next = *supported_list;
+       *supported_list = supported_listp;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_insert_supported: "
+                   "outgoing, supported=%p, supported_list=%p\n",
+                   supported,
+                   supported_list);
+
+       return 0;
+}
+  
+#ifndef NET_21
+DEBUG_NO_STATIC void
+pfkey_state_change(struct sock *sk)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_state_change: .\n");
+       if(!sk->dead) {
+               wake_up_interruptible(sk->sleep);
+       }
+}
+#endif /* !NET_21 */
+
+#ifndef NET_21
+DEBUG_NO_STATIC void
+pfkey_data_ready(struct sock *sk, int len)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_data_ready: .sk=%p len=%d\n", sk, len);
+       if(!sk->dead) {
+               wake_up_interruptible(sk->sleep);
+               sock_wake_async(sk->socket, 1);
+       }
+}
+
+DEBUG_NO_STATIC void
+pfkey_write_space(struct sock *sk)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_write_space: .\n");
+       if(!sk->dead) {
+               wake_up_interruptible(sk->sleep);
+               sock_wake_async(sk->socket, 2);
+       }
+}
+#endif /* !NET_21 */
+
+DEBUG_NO_STATIC void
+pfkey_insert_socket(struct sock *sk)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_insert_socket: sk=%p\n", sk);
+       cli();
+       sk->next=pfkey_sock_list;
+       pfkey_sock_list=sk;
+       sti();
+}
+
+DEBUG_NO_STATIC void
+pfkey_remove_socket(struct sock *sk)
+{
+       struct sock **s;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_remove_socket: .\n");
+       cli();
+       s=&pfkey_sock_list;
+
+       while(*s!=NULL) {
+               if(*s==sk) {
+                       *s=sk->next;
+                       sk->next=NULL;
+                       sti();
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_remove_socket: succeeded.\n");
+                       return;
+               }
+               s=&((*s)->next);
+       }
+       sti();
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_remove_socket: not found.\n");
+       return;
+}
+
+DEBUG_NO_STATIC void
+pfkey_destroy_socket(struct sock *sk)
+{
+       struct sk_buff *skb;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: .\n");
+       pfkey_remove_socket(sk);
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: pfkey_remove_socket called.\n");
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: "
+                   "sk(%p)->(&%p)receive_queue.{next=%p,prev=%p}.\n",
+                   sk,
+                   &(sk->receive_queue),
+                   sk->receive_queue.next,
+                   sk->receive_queue.prev);
+       while(sk && ((skb=skb_dequeue(&(sk->receive_queue)))!=NULL)) {
+#ifdef NET_21
+#ifdef CONFIG_IPSEC_DEBUG
+               if(debug_pfkey && sysctl_ipsec_debug_verbose) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_destroy_socket: skb=%p dequeued.\n", skb);
+                       printk(KERN_INFO "klips_debug: pfkey_skb contents:");
+                       printk(" next:%p", skb->next);
+                       printk(" prev:%p", skb->prev);
+                       printk(" list:%p", skb->list);
+                       printk(" sk:%p", skb->sk);
+                       printk(" stamp:%ld.%ld", skb->stamp.tv_sec, skb->stamp.tv_usec);
+                       printk(" dev:%p", skb->dev);
+                       if(skb->dev) {
+                               if(skb->dev->name) {
+                                       printk(" dev->name:%s", skb->dev->name);
+                               } else {
+                                       printk(" dev->name:NULL?");
+                               }
+                       } else {
+                               printk(" dev:NULL");
+                       }
+                       printk(" h:%p", skb->h.raw);
+                       printk(" nh:%p", skb->nh.raw);
+                       printk(" mac:%p", skb->mac.raw);
+                       printk(" dst:%p", skb->dst);
+                       if(sysctl_ipsec_debug_verbose) {
+                               int i;
+                               
+                               printk(" cb");
+                               for(i=0; i<48; i++) {
+                                       printk(":%2x", skb->cb[i]);
+                               }
+                       }
+                       printk(" len:%d", skb->len);
+                       printk(" csum:%d", skb->csum);
+                       printk(" used:%d", skb->used);
+                       printk(" is_clone:%d", skb->is_clone);
+                       printk(" cloned:%d", skb->cloned);
+                       printk(" pkt_type:%d", skb->pkt_type);
+                       printk(" ip_summed:%d", skb->ip_summed);
+                       printk(" priority:%d", skb->priority);
+                       printk(" protocol:%d", skb->protocol);
+                       printk(" security:%d", skb->security);
+                       printk(" truesize:%d", skb->truesize);
+                       printk(" head:%p", skb->head);
+                       printk(" data:%p", skb->data);
+                       printk(" tail:%p", skb->tail);
+                       printk(" end:%p", skb->end);
+                       if(sysctl_ipsec_debug_verbose) {
+                               unsigned int i;
+                               printk(" data");
+                               for(i=(unsigned int)(skb->head); i<(unsigned int)(skb->end); i++) {
+                                       printk(":%2x", (unsigned char)(*(char*)(i)));
+                               }
+                       }
+                       printk(" destructor:%p", skb->destructor);
+                       printk("\n");
+               }
+#endif /* CONFIG_IPSEC_DEBUG */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_destroy_socket: skb=%p freed.\n", skb);
+               kfree_skb(skb);
+
+#else /* NET_21 */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_destroy_socket: skb=%p dequeued and freed.\n", skb);
+               kfree_skb(skb, FREE_WRITE);
+
+#endif /* NET_21 */
+       }
+
+       sk->dead = 1;
+       sk_free(sk);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: destroyed.\n");
+}
+
+int
+pfkey_upmsg(struct socket *sock, struct sadb_msg *pfkey_msg)
+{
+       int error;
+       struct sk_buff * skb = NULL;
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: NULL socket passed in.\n");
+               return -EINVAL;
+       }
+
+       if(pfkey_msg == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: NULL pfkey_msg passed in.\n");
+               return -EINVAL;
+       }
+
+#ifdef NET_21
+       sk = sock->sk;
+#else /* NET_21 */
+       sk = sock->data;
+#endif /* NET_21 */
+
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: NULL sock passed in.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_upmsg: allocating %d bytes...\n",
+                   pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN);
+       if(!(skb = alloc_skb(pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN, GFP_ATOMIC) )) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: no buffers left to send up a message.\n");
+               return -ENOBUFS;
+       }
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_upmsg: ...allocated at %p.\n", skb);
+       
+       skb->dev = NULL;
+       
+       if(skb_tailroom(skb) < pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN) {
+               printk(KERN_WARNING "klips_error:pfkey_upmsg: "
+                      "tried to skb_put %ld, %d available.  "
+                      "This should never happen, please report.\n",
+                      (unsigned long int)pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN,
+                      skb_tailroom(skb));
+#ifdef NET_21
+               kfree_skb(skb);
+#else /* NET_21 */
+               kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+               return -ENOBUFS;
+       }
+       skb->h.raw = skb_put(skb, pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN);
+       memcpy(skb->h.raw, pfkey_msg, pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN);
+
+#ifndef NET_21
+       skb->free = 1;
+#endif /* !NET_21 */
+
+       if((error = sock_queue_rcv_skb(sk, skb)) < 0) {
+               skb->sk=NULL;
+#ifdef NET_21
+               kfree_skb(skb);
+#else /* NET_21 */
+               kfree_skb(skb, FREE_WRITE);
+#endif /* NET_21 */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: "
+                           "error=%d calling sock_queue_rcv_skb with skb=%p.\n",
+                           error, skb);
+               return error;
+       }
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+pfkey_create(struct socket *sock, int protocol)
+{
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: socket NULL.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_create: sock=%p type:%d state:%d flags:%ld protocol:%d\n",
+                   sock,
+                   sock->type,
+                   (unsigned int)(sock->state),
+                   sock->flags, protocol);
+
+       if(sock->type != SOCK_RAW) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: only SOCK_RAW supported.\n");
+               return -ESOCKTNOSUPPORT;
+       }
+
+       if(protocol != PF_KEY_V2) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: protocol not PF_KEY_V2.\n");
+               return -EPROTONOSUPPORT;
+       }
+
+       if((current->uid != 0)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: must be root to open pfkey sockets.\n");
+               return -EACCES;
+       }
+
+#ifdef NET_21
+       sock->state = SS_UNCONNECTED;
+#endif /* NET_21 */
+       MOD_INC_USE_COUNT;
+#ifdef NET_21
+       if((sk=(struct sock *)sk_alloc(PF_KEY, GFP_KERNEL, 1)) == NULL)
+#else /* NET_21 */
+       if((sk=(struct sock *)sk_alloc(GFP_KERNEL)) == NULL)
+#endif /* NET_21 */
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: Out of memory trying to allocate.\n");
+               MOD_DEC_USE_COUNT;
+               return -ENOMEM;
+       }
+
+#ifndef NET_21
+       memset(sk, 0, sizeof(*sk));
+#endif /* !NET_21 */
+
+#ifdef NET_21
+       sock_init_data(sock, sk);
+
+       sk->destruct = NULL;
+       sk->reuse = 1;
+       sock->ops = &SOCKOPS_WRAPPED(pfkey_ops);
+
+       sk->zapped=0;
+       sk->family = PF_KEY;
+/*     sk->num = protocol; */
+       sk->protocol = protocol;
+       key_pid(sk) = current->pid;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_create: sock->fasync_list=%p sk->sleep=%p.\n",
+                   sock->fasync_list,
+                   sk->sleep);
+#else /* NET_21 */
+       sk->type=sock->type;
+       init_timer(&sk->timer);
+       skb_queue_head_init(&sk->write_queue);
+       skb_queue_head_init(&sk->receive_queue);
+       skb_queue_head_init(&sk->back_log);
+       sk->rcvbuf=SK_RMEM_MAX;
+       sk->sndbuf=SK_WMEM_MAX;
+       sk->allocation=GFP_KERNEL;
+       sk->state=TCP_CLOSE;
+       sk->priority=SOPRI_NORMAL;
+       sk->state_change=pfkey_state_change;
+       sk->data_ready=pfkey_data_ready;
+       sk->write_space=pfkey_write_space;
+       sk->error_report=pfkey_state_change;
+       sk->mtu=4096;
+       sk->socket=sock;
+       sock->data=(void *)sk;
+       sk->sleep=sock->wait;
+#endif /* NET_21 */
+
+       pfkey_insert_socket(sk);
+       pfkey_list_insert_socket(sock, &pfkey_open_sockets);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_create: Socket sock=%p sk=%p initialised.\n", sock, sk);
+       return 0;
+}
+
+#ifndef NET_21
+DEBUG_NO_STATIC int
+pfkey_dup(struct socket *newsock, struct socket *oldsock)
+{
+       struct sock *sk;
+
+       if(newsock==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_dup: No new socket attached.\n");
+               return -EINVAL;
+       }
+               
+       if(oldsock==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_dup: No old socket attached.\n");
+               return -EINVAL;
+       }
+               
+#ifdef NET_21
+       sk=oldsock->sk;
+#else /* NET_21 */
+       sk=oldsock->data;
+#endif /* NET_21 */
+       
+       /* May not have data attached */
+       if(sk==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_dup: No sock attached to old socket.\n");
+               return -EINVAL;
+       }
+               
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_dup: .\n");
+
+       return pfkey_create(newsock, sk->protocol);
+}
+#endif /* !NET_21 */
+
+DEBUG_NO_STATIC int
+#ifdef NETDEV_23
+pfkey_release(struct socket *sock)
+#else
+pfkey_release(struct socket *sock, struct socket *peersock)
+#endif
+{
+       struct sock *sk;
+       int i;
+
+       if(sock==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_release: No socket attached.\n");
+               return 0; /* -EINVAL; */
+       }
+               
+#ifdef NET_21
+       sk=sock->sk;
+#else /* NET_21 */
+       sk=sock->data;
+#endif /* NET_21 */
+       
+       /* May not have data attached */
+       if(sk==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_release: No sk attached to sock=%p.\n", sock);
+               return 0; /* -EINVAL; */
+       }
+               
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_release: .sock=%p sk=%p\n", sock, sk);
+
+#ifdef NET_21
+       if(!sk->dead)
+#endif /* NET_21 */
+               if(sk->state_change) {
+                       sk->state_change(sk);
+               }
+
+#ifdef NET_21
+       sock->sk = NULL;
+#else /* NET_21 */
+       sock->data = NULL;
+#endif /* NET_21 */
+
+       /* Try to flush out this socket. Throw out buffers at least */
+       pfkey_destroy_socket(sk);
+       pfkey_list_remove_socket(sock, &pfkey_open_sockets);
+       for(i = SADB_SATYPE_UNSPEC; i <= SADB_SATYPE_MAX; i++) {
+               pfkey_list_remove_socket(sock, &(pfkey_registered_sockets[i]));
+       }
+
+       MOD_DEC_USE_COUNT;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_release: succeeded.\n");
+
+       return 0;
+}
+
+#ifndef NET_21
+DEBUG_NO_STATIC int
+pfkey_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_bind: operation not supported.\n");
+       return -EINVAL;
+}
+
+DEBUG_NO_STATIC int
+pfkey_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_connect: operation not supported.\n");
+       return -EINVAL;
+}
+
+DEBUG_NO_STATIC int
+pfkey_socketpair(struct socket *a, struct socket *b)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_socketpair: operation not supported.\n");
+       return -EINVAL;
+}
+
+DEBUG_NO_STATIC int
+pfkey_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_aaccept: operation not supported.\n");
+       return -EINVAL;
+}
+
+DEBUG_NO_STATIC int
+pfkey_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len,
+               int peer)
+{
+       struct sockaddr *ska = (struct sockaddr*)uaddr;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getname: .\n");
+       ska->sa_family = PF_KEY;
+       *uaddr_len = sizeof(*ska);
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+pfkey_select(struct socket *sock, int sel_type, select_table *wait)
+{
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_select: .sock=%p sk=%p sel_type=%d\n",
+                   sock,
+                   sock->data,
+                   sel_type);
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_select: Null socket passed in.\n");
+               return -EINVAL;
+       }
+       return datagram_select(sock->data, sel_type, wait);
+}
+
+DEBUG_NO_STATIC int
+pfkey_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_ioctl: not supported.\n");
+       return -EINVAL;
+}
+
+DEBUG_NO_STATIC int
+pfkey_listen(struct socket *sock, int backlog)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_listen: not supported.\n");
+       return -EINVAL;
+}
+#endif /* !NET_21 */
+
+DEBUG_NO_STATIC int
+pfkey_shutdown(struct socket *sock, int mode)
+{
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_shutdown: NULL socket passed in.\n");
+               return -EINVAL;
+       }
+
+#ifdef NET_21
+       sk=sock->sk;
+#else /* NET_21 */
+       sk=sock->data;
+#endif /* NET_21 */
+       
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_shutdown: No sock attached to socket.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_shutdown: mode=%x.\n", mode);
+       mode++;
+       
+       if(mode&SEND_SHUTDOWN) {
+               sk->shutdown|=SEND_SHUTDOWN;
+               sk->state_change(sk);
+       }
+
+       if(mode&RCV_SHUTDOWN) {
+               sk->shutdown|=RCV_SHUTDOWN;
+               sk->state_change(sk);
+       }
+       return 0;
+}
+
+#ifndef NET_21
+DEBUG_NO_STATIC int
+pfkey_setsockopt(struct socket *sock, int level, int optname, char *optval, int optlen)
+{
+#ifndef NET_21
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_setsockopt: Null socket passed in.\n");
+               return -EINVAL;
+       }
+       
+       sk=sock->data;
+       
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_setsockopt: Null sock passed in.\n");
+               return -EINVAL;
+       }
+#endif /* !NET_21 */
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_setsockopt: .\n");
+       if(level!=SOL_SOCKET) {
+               return -EOPNOTSUPP;
+       }
+#ifdef NET_21
+       return sock_setsockopt(sock, level, optname, optval, optlen);
+#else /* NET_21 */
+       return sock_setsockopt(sk, level, optname, optval, optlen);
+#endif /* NET_21 */
+}
+
+DEBUG_NO_STATIC int
+pfkey_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen)
+{
+#ifndef NET_21
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_setsockopt: Null socket passed in.\n");
+               return -EINVAL;
+       }
+       
+       sk=sock->data;
+       
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_setsockopt: Null sock passed in.\n");
+               return -EINVAL;
+       }
+#endif /* !NET_21 */
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getsockopt: .\n");
+       if(level!=SOL_SOCKET) {
+               return -EOPNOTSUPP;
+       }
+#ifdef NET_21
+       return sock_getsockopt(sock, level, optname, optval, optlen);
+#else /* NET_21 */
+       return sock_getsockopt(sk, level, optname, optval, optlen);
+#endif /* NET_21 */
+}
+
+DEBUG_NO_STATIC int
+pfkey_fcntl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_fcntl: "
+                   "not supported.\n");
+       return -EINVAL;
+}
+#endif /* !NET_21 */
+
+/*
+ *     Send PF_KEY data down.
+ */
+               
+DEBUG_NO_STATIC int
+#ifdef NET_21
+pfkey_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
+#else /* NET_21 */
+pfkey_sendmsg(struct socket *sock, struct msghdr *msg, int len, int nonblock, int flags)
+#endif /* NET_21 */
+{
+       struct sock *sk;
+       int error = 0;
+       struct sadb_msg *pfkey_msg = NULL, *pfkey_reply = NULL;
+       
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "Null socket passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+#ifdef NET_21
+       sk = sock->sk;
+#else /* NET_21 */
+       sk = sock->data;
+#endif /* NET_21 */
+
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "Null sock passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(msg == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "Null msghdr passed in.\n");
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sendmsg: .\n");
+       if(sk->err) {
+               error = sock_error(sk);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "sk->err is non-zero, returns %d.\n",
+                           error);
+               SENDERR(-error);
+       }
+
+       if((current->uid != 0)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "must be root to send messages to pfkey sockets.\n");
+               SENDERR(EACCES);
+       }
+
+#ifdef NET_21
+       if(msg->msg_control)
+#else /* NET_21 */
+       if(flags || msg->msg_control)
+#endif /* NET_21 */
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "can't set flags or set msg_control.\n");
+               SENDERR(EINVAL);
+       }
+               
+       if(sk->shutdown & SEND_SHUTDOWN) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "shutdown.\n");
+               send_sig(SIGPIPE, current, 0);
+               SENDERR(EPIPE);
+       }
+       
+       if(len < sizeof(struct sadb_msg)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "bogus msg len of %d, too small.\n", len);
+               SENDERR(EMSGSIZE);
+       }
+
+       if((pfkey_msg = (struct sadb_msg*)kmalloc(len, GFP_KERNEL)) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "memory allocation error.\n");
+               SENDERR(ENOBUFS);
+       }
+
+       memcpy_fromiovec((void *)pfkey_msg, msg->msg_iov, len);
+
+       if(pfkey_msg->sadb_msg_version != PF_KEY_V2) {
+               KLIPS_PRINT(1 || debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "not PF_KEY_V2 msg, found %d, should be %d.\n",
+                           pfkey_msg->sadb_msg_version,
+                           PF_KEY_V2);
+               kfree((void*)pfkey_msg);
+               return -EINVAL;
+       }
+
+       if(len != pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "bogus msg len of %d, not %d byte aligned.\n",
+                           len, IPSEC_PFKEYv2_ALIGN);
+               SENDERR(EMSGSIZE);
+       }
+
+       /* check PID */
+       if(pfkey_msg->sadb_msg_pid != current->pid) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "pid (%d) does not equal sending process pid (%d).\n",
+                           pfkey_msg->sadb_msg_pid, current->pid);
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_msg->sadb_msg_reserved) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "reserved field must be zero, set to %d.\n",
+                           pfkey_msg->sadb_msg_reserved);
+               SENDERR(EINVAL);
+       }
+       
+       if((pfkey_msg->sadb_msg_type > SADB_MAX) || (!pfkey_msg->sadb_msg_type)){
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "msg type too large or small:%d.\n",
+                           pfkey_msg->sadb_msg_type);
+               SENDERR(EINVAL);
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sendmsg: "
+                   "msg sent for parsing.\n");
+       
+       if((error = pfkey_msg_interp(sk, pfkey_msg, &pfkey_reply))) {
+               struct socket_list *pfkey_socketsp;
+
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                           "pfkey_msg_parse returns %d.\n",
+                           error);
+
+               if((pfkey_reply = (struct sadb_msg*)kmalloc(sizeof(struct sadb_msg), GFP_KERNEL)) == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_sendmsg: "
+                                   "memory allocation error.\n");
+                       SENDERR(ENOBUFS);
+               }
+               memcpy((void*)pfkey_reply, (void*)pfkey_msg, sizeof(struct sadb_msg));
+               pfkey_reply->sadb_msg_errno = -error;
+               pfkey_reply->sadb_msg_len = sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+
+               for(pfkey_socketsp = pfkey_open_sockets;
+                   pfkey_socketsp;
+                   pfkey_socketsp = pfkey_socketsp->next) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                                   "sending up error=%d message=%p to socket=%p.\n",
+                                   error,
+                                   pfkey_reply,
+                                   pfkey_socketsp->socketp);
+                       if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                                           "sending up error message to socket=%p failed with error=%d.\n",
+                                           pfkey_socketsp->socketp, error);
+                               pfkey_msg_free(&pfkey_reply);
+                               goto errlab;
+                       }
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                                   "sending up error message to socket=%p succeeded.\n",
+                                   pfkey_socketsp->socketp);
+               }
+               
+               pfkey_msg_free(&pfkey_reply);
+               
+               SENDERR(-error);
+       }
+
+ errlab:
+       if (pfkey_msg) {
+               kfree((void*)pfkey_msg);
+       }
+       
+       if(error) {
+               return error;
+       } else {
+               return len;
+       }
+}
+
+/*
+ *     Receive PF_KEY data up.
+ */
+               
+DEBUG_NO_STATIC int
+#ifdef NET_21
+pfkey_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags, struct scm_cookie *scm)
+#else /* NET_21 */
+pfkey_recvmsg(struct socket *sock, struct msghdr *msg, int size, int noblock, int flags, int *addr_len)
+#endif /* NET_21 */
+{
+       struct sock *sk;
+#ifdef NET_21
+       int noblock = flags & MSG_DONTWAIT;
+#endif /* NET_21 */
+       struct sk_buff *skb;
+       int error;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_recvmsg: Null socket passed in.\n");
+               return -EINVAL;
+       }
+
+#ifdef NET_21
+       sk = sock->sk;
+#else /* NET_21 */
+       sk = sock->data;
+#endif /* NET_21 */
+
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_recvmsg: Null sock passed in for sock=%p.\n", sock);
+               return -EINVAL;
+       }
+
+       if(msg == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_recvmsg: Null msghdr passed in for sock=%p, sk=%p.\n",
+                           sock, sk);
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_recvmsg: sock=%p sk=%p msg=%p size=%d.\n",
+                   sock, sk, msg, size);
+       if(flags & ~MSG_PEEK) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: flags (%d) other than MSG_PEEK not supported.\n",
+                           flags);
+               return -EOPNOTSUPP;
+       }
+               
+#ifdef NET_21
+       msg->msg_namelen = 0; /* sizeof(*ska); */
+#else /* NET_21 */
+       if(addr_len) {
+               *addr_len = 0; /* sizeof(*ska); */
+       }
+#endif /* NET_21 */
+               
+       if(sk->err) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: sk->err=%d.\n", sk->err);
+               return sock_error(sk);
+       }
+
+       if((skb = skb_recv_datagram(sk, flags, noblock, &error) ) == NULL) {
+                return error;
+       }
+
+       if(size > skb->len) {
+               size = skb->len;
+       }
+#ifdef NET_21
+       else if(size <skb->len) {
+               msg->msg_flags |= MSG_TRUNC;
+       }
+#endif /* NET_21 */
+
+       skb_copy_datagram_iovec(skb, 0, msg->msg_iov, size);
+        sk->stamp=skb->stamp;
+
+       skb_free_datagram(sk, skb);
+       return size;
+}
+
+#ifdef NET_21
+struct net_proto_family pfkey_family_ops = {
+       PF_KEY,
+       pfkey_create
+};
+
+struct proto_ops SOCKOPS_WRAPPED(pfkey_ops) = {
+#ifdef NETDEV_23
+       family:         PF_KEY,
+       release:        pfkey_release,
+       bind:           sock_no_bind,
+       connect:        sock_no_connect,
+       socketpair:     sock_no_socketpair,
+       accept:         sock_no_accept,
+       getname:        sock_no_getname,
+       poll:           datagram_poll,
+       ioctl:          sock_no_ioctl,
+       listen:         sock_no_listen,
+       shutdown:       pfkey_shutdown,
+       setsockopt:     sock_no_setsockopt,
+       getsockopt:     sock_no_getsockopt,
+       sendmsg:        pfkey_sendmsg,
+       recvmsg:        pfkey_recvmsg,
+       mmap:           sock_no_mmap,
+#else
+       PF_KEY,
+       sock_no_dup,
+       pfkey_release,
+       sock_no_bind,
+       sock_no_connect,
+       sock_no_socketpair,
+       sock_no_accept,
+       sock_no_getname,
+       datagram_poll,
+       sock_no_ioctl,
+       sock_no_listen,
+       pfkey_shutdown,
+       sock_no_setsockopt,
+       sock_no_getsockopt,
+       sock_no_fcntl,
+       pfkey_sendmsg,
+       pfkey_recvmsg
+#endif
+};
+
+#ifdef NETDEV_23
+#include <linux/smp_lock.h>
+SOCKOPS_WRAP(pfkey, PF_KEY);
+#endif
+
+#else /* NET_21 */
+struct proto_ops pfkey_proto_ops = {
+       PF_KEY,
+       pfkey_create,
+       pfkey_dup,
+       pfkey_release,
+       pfkey_bind,
+       pfkey_connect,
+       pfkey_socketpair,
+       pfkey_accept,
+       pfkey_getname,
+       pfkey_select,
+       pfkey_ioctl,
+       pfkey_listen,
+       pfkey_shutdown,
+       pfkey_setsockopt,
+       pfkey_getsockopt,
+       pfkey_fcntl,
+       pfkey_sendmsg,
+       pfkey_recvmsg
+};
+#endif /* NET_21 */
+   
+#ifdef CONFIG_PROC_FS
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+pfkey_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       off_t pos=0;
+       off_t begin=0;
+       int len=0;
+       struct sock *sk=pfkey_sock_list;
+       
+#ifdef CONFIG_IPSEC_DEBUG
+       if(!sysctl_ipsec_debug_verbose) {
+#endif CONFIG_IPSEC_DEBUG
+       len+= sprintf(buffer,"    sock   pid   socket     next     prev e n p sndbf    Flags     Type St\n");
+#ifdef CONFIG_IPSEC_DEBUG
+       } else {
+       len+= sprintf(buffer,"    sock   pid d    sleep   socket     next     prev e r z n p sndbf    stamp    Flags     Type St\n");
+       }
+#endif CONFIG_IPSEC_DEBUG
+       
+       while(sk!=NULL) {
+#ifdef CONFIG_IPSEC_DEBUG
+               if(!sysctl_ipsec_debug_verbose) {
+#endif CONFIG_IPSEC_DEBUG
+               len+=sprintf(buffer+len,"%8p %5d %8p %8p %8p %d %d %d %5d %08lX %8X %2X\n",
+                            sk,
+                            key_pid(sk),
+                            sk->socket,
+                            sk->next,
+                            sk->prev,
+                            sk->err,
+                            sk->num,
+                            sk->protocol,
+                            sk->sndbuf,
+                            sk->socket->flags,
+                            sk->socket->type,
+                            sk->socket->state);
+#ifdef CONFIG_IPSEC_DEBUG
+               } else {
+               len+=sprintf(buffer+len,"%8p %5d %d %8p %8p %8p %8p %d %d %d %d %d %5d %d.%06d %08lX %8X %2X\n",
+                            sk,
+                            key_pid(sk),
+                            sk->dead,
+                            sk->sleep,
+                            sk->socket,
+                            sk->next,
+                            sk->prev,
+                            sk->err,
+                            sk->reuse,
+                            sk->zapped,
+                            sk->num,
+                            sk->protocol,
+                            sk->sndbuf,
+                            (unsigned int)sk->stamp.tv_sec,
+                            (unsigned int)sk->stamp.tv_usec,
+                            sk->socket->flags,
+                            sk->socket->type,
+                            sk->socket->state);
+               }
+#endif CONFIG_IPSEC_DEBUG
+               
+               pos=begin+len;
+               if(pos<offset)
+               {
+                       len=0;
+                       begin=pos;
+               }
+               if(pos>offset+length)
+                       break;
+               sk=sk->next;
+       }
+       *start=buffer+(offset-begin);
+       len-=(offset-begin);
+       if(len>length)
+               len=length;
+       return len;
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+pfkey_supported_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       off_t pos=0;
+       off_t begin=0;
+       int len=0;
+       int satype;
+       struct supported_list *pfkey_supported_p;
+       
+       len+= sprintf(buffer,"satype exttype alg_id ivlen minbits maxbits\n");
+       
+       for(satype = SADB_SATYPE_UNSPEC; satype <= SADB_SATYPE_MAX; satype++) {
+               pfkey_supported_p = pfkey_supported_list[satype];
+               while(pfkey_supported_p) {
+                       len+=sprintf(buffer+len,"    %2d      %2d     %2d   %3d     %3d     %3d\n",
+                                    satype,
+                                    pfkey_supported_p->supportedp->supported_alg_exttype,
+                                    pfkey_supported_p->supportedp->supported_alg_id,
+                                    pfkey_supported_p->supportedp->supported_alg_ivlen,
+                                    pfkey_supported_p->supportedp->supported_alg_minbits,
+                                    pfkey_supported_p->supportedp->supported_alg_maxbits);
+                       
+                       pos=begin+len;
+                       if(pos<offset) {
+                               len=0;
+                               begin=pos;
+                       }
+                       if(pos>offset+length)
+                               break;
+                       pfkey_supported_p = pfkey_supported_p->next;
+               }
+       }
+       *start=buffer+(offset-begin);
+       len-=(offset-begin);
+       if(len>length)
+               len=length;
+       return len;
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+pfkey_registered_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       off_t pos=0;
+       off_t begin=0;
+       int len=0;
+       int satype;
+       struct socket_list *pfkey_sockets;
+       
+       len+= sprintf(buffer,"satype   socket   pid       sk\n");
+       
+       for(satype = SADB_SATYPE_UNSPEC; satype <= SADB_SATYPE_MAX; satype++) {
+               pfkey_sockets = pfkey_registered_sockets[satype];
+               while(pfkey_sockets) {
+#ifdef NET_21
+                       len+=sprintf(buffer+len,"    %2d %8p %5d %8p\n",
+                                    satype,
+                                    pfkey_sockets->socketp,
+                                    key_pid(pfkey_sockets->socketp->sk),
+                                    pfkey_sockets->socketp->sk);
+#else /* NET_21 */
+                       len+=sprintf(buffer+len,"    %2d %8p   N/A %8p\n",
+                                    satype,
+                                    pfkey_sockets->socketp,
+#if 0
+                                    key_pid((pfkey_sockets->socketp)->data),
+#endif
+                                    (pfkey_sockets->socketp)->data);
+#endif /* NET_21 */
+                       
+                       pos=begin+len;
+                       if(pos<offset) {
+                               len=0;
+                               begin=pos;
+                       }
+                       if(pos>offset+length)
+                               break;
+                       pfkey_sockets = pfkey_sockets->next;
+               }
+       }
+       *start=buffer+(offset-begin);
+       len-=(offset-begin);
+       if(len>length)
+               len=length;
+       return len;
+}
+
+#ifndef PROC_FS_2325
+struct proc_dir_entry proc_net_pfkey =
+{
+       0,
+       6, "pf_key",
+       S_IFREG | S_IRUGO, 1, 0, 0,
+       0, &proc_net_inode_operations,
+       pfkey_get_info
+};
+struct proc_dir_entry proc_net_pfkey_supported =
+{
+       0,
+       16, "pf_key_supported",
+       S_IFREG | S_IRUGO, 1, 0, 0,
+       0, &proc_net_inode_operations,
+       pfkey_supported_get_info
+};
+struct proc_dir_entry proc_net_pfkey_registered =
+{
+       0,
+       17, "pf_key_registered",
+       S_IFREG | S_IRUGO, 1, 0, 0,
+       0, &proc_net_inode_operations,
+       pfkey_registered_get_info
+};
+#endif /* !PROC_FS_2325 */
+#endif /* CONFIG_PROC_FS */
+
+DEBUG_NO_STATIC int
+supported_add_all(int satype, struct supported supported[], int size)
+{
+       int i;
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:init_pfkey: "
+                   "sizeof(supported_init_<satype=%d>)[%d]/sizeof(struct supported)[%d]=%d.\n",
+                   satype,
+                   size,
+                   sizeof(struct supported),
+                   size/sizeof(struct supported));
+
+       for(i = 0; i < size / sizeof(struct supported); i++) {
+               
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:init_pfkey: "
+                           "i=%d inserting satype=%d exttype=%d id=%d ivlen=%d minbits=%d maxbits=%d.\n",
+                           i,
+                           satype,
+                           supported[i].supported_alg_exttype,
+                           supported[i].supported_alg_id,
+                           supported[i].supported_alg_ivlen,
+                           supported[i].supported_alg_minbits,
+                           supported[i].supported_alg_maxbits);
+                           
+               error |= pfkey_list_insert_supported(&(supported[i]),
+                                           &(pfkey_supported_list[satype]));
+       }
+       return error;
+}
+
+DEBUG_NO_STATIC int
+supported_remove_all(int satype)
+{
+       int error = 0;
+       struct supported*supportedp;
+
+       while(pfkey_supported_list[satype]) {
+               supportedp = pfkey_supported_list[satype]->supportedp;
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:init_pfkey: "
+                           "removing satype=%d exttype=%d id=%d ivlen=%d minbits=%d maxbits=%d.\n",
+                           satype,
+                           supportedp->supported_alg_exttype,
+                           supportedp->supported_alg_id,
+                           supportedp->supported_alg_ivlen,
+                           supportedp->supported_alg_minbits,
+                           supportedp->supported_alg_maxbits);
+                           
+               error |= pfkey_list_remove_supported(supportedp,
+                                           &(pfkey_supported_list[satype]));
+       }
+       return error;
+}
+
+int
+pfkey_init(void)
+{
+       int error = 0;
+       int i;
+       
+       static struct supported supported_init_ah[] = {
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_MD5HMAC, 0, 128, 128},
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_SHA1HMAC, 0, 160, 160}
+       };
+       static struct supported supported_init_esp[] = {
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_MD5HMAC, 0, 128, 128},
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_SHA1HMAC, 0, 160, 160},
+               {SADB_EXT_SUPPORTED_ENCRYPT, SADB_EALG_3DESCBC, 128, 168, 168}
+       };
+       static struct supported supported_init_ipip[] = {
+               {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv4_in_IPv4, 0, 32, 32}
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+               , {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv6_in_IPv4, 0, 128, 32}
+               , {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv4_in_IPv6, 0, 32, 128}
+               , {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv6_in_IPv6, 0, 128, 128}
+#endif
+       };
+#ifdef CONFIG_IPSEC_IPCOMP
+       static struct supported supported_init_ipcomp[] = {
+               {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_CALG_DEFLATE, 0, 1, 1}
+       };
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+        printk(KERN_INFO "FreeS/WAN: initialising PF_KEY domain sockets.\n");
+
+       for(i = SADB_SATYPE_UNSPEC; i <= SADB_SATYPE_MAX; i++) {
+               pfkey_registered_sockets[i] = NULL;
+               pfkey_supported_list[i] = NULL;
+       }
+
+       supported_add_all(SADB_SATYPE_AH, supported_init_ah, sizeof(supported_init_ah));
+       supported_add_all(SADB_SATYPE_ESP, supported_init_esp, sizeof(supported_init_esp));
+#ifdef CONFIG_IPSEC_IPCOMP
+       supported_add_all(SADB_X_SATYPE_COMP, supported_init_ipcomp, sizeof(supported_init_ipcomp));
+#endif /* CONFIG_IPSEC_IPCOMP */
+       supported_add_all(SADB_X_SATYPE_IPIP, supported_init_ipip, sizeof(supported_init_ipip));
+
+#ifdef NET_21
+        sock_register(&pfkey_family_ops);
+#else /* NET_21 */
+        sock_register(pfkey_proto_ops.family, &pfkey_proto_ops);
+#endif /* NET_21 */
+
+#ifdef CONFIG_PROC_FS
+#  ifndef PROC_FS_2325
+#    ifdef PROC_FS_21
+       proc_register(proc_net, &proc_net_pfkey);
+       proc_register(proc_net, &proc_net_pfkey_supported);
+       proc_register(proc_net, &proc_net_pfkey_registered);
+#    else /* PROC_FS_21 */
+       proc_register_dynamic(&proc_net, &proc_net_pfkey);
+       proc_register_dynamic(&proc_net, &proc_net_pfkey_supported);
+       proc_register_dynamic(&proc_net, &proc_net_pfkey_registered);
+#    endif /* PROC_FS_21 */
+#  else /* !PROC_FS_2325 */
+       proc_net_create ("pf_key", 0, pfkey_get_info);
+       proc_net_create ("pf_key_supported", 0, pfkey_supported_get_info);
+       proc_net_create ("pf_key_registered", 0, pfkey_registered_get_info);
+#  endif /* !PROC_FS_2325 */
+#endif          /* CONFIG_PROC_FS */
+
+       return error;
+}
+
+int
+pfkey_cleanup(void)
+{
+       int error = 0;
+       
+        printk(KERN_INFO "FreeS/WAN: shutting down PF_KEY domain sockets.\n");
+#ifdef NET_21
+        sock_unregister(PF_KEY);
+#else /* NET_21 */
+        sock_unregister(pfkey_proto_ops.family);
+#endif /* NET_21 */
+
+       supported_remove_all(SADB_SATYPE_AH);
+       supported_remove_all(SADB_SATYPE_ESP);
+#ifdef CONFIG_IPSEC_IPCOMP
+       supported_remove_all(SADB_X_SATYPE_COMP);
+#endif /* CONFIG_IPSEC_IPCOMP */
+       supported_remove_all(SADB_X_SATYPE_IPIP);
+
+#ifdef CONFIG_PROC_FS
+#  ifndef PROC_FS_2325
+       if (proc_net_unregister(proc_net_pfkey.low_ino) != 0)
+               printk("klips_debug:pfkey_cleanup: cannot unregister /proc/net/pf_key\n");
+       if (proc_net_unregister(proc_net_pfkey_supported.low_ino) != 0)
+               printk("klips_debug:pfkey_cleanup: cannot unregister /proc/net/pf_key_supported\n");
+       if (proc_net_unregister(proc_net_pfkey_registered.low_ino) != 0)
+               printk("klips_debug:pfkey_cleanup: cannot unregister /proc/net/pf_key_registered\n");
+#  else /* !PROC_FS_2325 */
+       proc_net_remove ("pf_key");
+       proc_net_remove ("pf_key_supported");
+       proc_net_remove ("pf_key_registered");
+#  endif /* !PROC_FS_2325 */
+#endif          /* CONFIG_PROC_FS */
+
+       /* other module unloading cleanup happens here */
+       return error;
+}
+
+#ifdef MODULE
+#if 0
+int
+init_module(void)
+{
+       pfkey_init();
+       return 0;
+}
+
+void
+cleanup_module(void)
+{
+       pfkey_cleanup();
+}
+#endif /* 0 */
+#else /* MODULE */
+void
+pfkey_proto_init(struct net_proto *pro)
+{
+       pfkey_init();
+}
+#endif /* MODULE */
+
+/*
+ * $Log$
+ * Revision 1.49  2000/11/06 04:33:47  rgb
+ * Changed non-exported functions to DEBUG_NO_STATIC.
+ *
+ * Revision 1.48  2000/09/29 19:47:41  rgb
+ * Update copyright.
+ *
+ * Revision 1.47  2000/09/22 04:23:04  rgb
+ * Added more debugging to pfkey_upmsg() call from pfkey_sendmsg() error.
+ *
+ * Revision 1.46  2000/09/21 04:20:44  rgb
+ * Fixed array size off-by-one error.  (Thanks Svenning!)
+ *
+ * Revision 1.45  2000/09/20 04:01:26  rgb
+ * Changed static functions to DEBUG_NO_STATIC for revealing function names
+ * in oopsen.
+ *
+ * Revision 1.44  2000/09/19 00:33:17  rgb
+ * 2.0 fixes.
+ *
+ * Revision 1.43  2000/09/16 01:28:13  rgb
+ * Fixed use of 0 in p format warning.
+ *
+ * Revision 1.42  2000/09/16 01:09:41  rgb
+ * Fixed debug format warning for pointers that was expecting ints.
+ *
+ * Revision 1.41  2000/09/13 15:54:00  rgb
+ * Rewrote pfkey_get_info(), added pfkey_{supported,registered}_get_info().
+ * Moved supported algos add and remove to functions.
+ *
+ * Revision 1.40  2000/09/12 18:49:28  rgb
+ * Added IPIP tunnel and IPCOMP register support.
+ *
+ * Revision 1.39  2000/09/12 03:23:49  rgb
+ * Converted #if0 debugs to sysctl.
+ * Removed debug_pfkey initialisations that prevented no_debug loading or
+ * linking.
+ *
+ * Revision 1.38  2000/09/09 06:38:02  rgb
+ * Return positive errno in pfkey_reply error message.
+ *
+ * Revision 1.37  2000/09/08 19:19:09  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Clean-up of long-unused crud...
+ * Create pfkey error message on on failure.
+ * Give pfkey_list_{insert,remove}_{socket,supported}() some error
+ * checking.
+ *
+ * Revision 1.36  2000/09/01 18:49:38  rgb
+ * Reap experimental NET_21_ bits.
+ * Turned registered sockets list into an array of one list per satype.
+ * Remove references to deprecated sklist_{insert,remove}_socket.
+ * Removed leaking socket debugging code.
+ * Removed duplicate pfkey_insert_socket in pfkey_create.
+ * Removed all references to pfkey msg->msg_name, since it is not used for
+ * pfkey.
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ * Only send pfkey_expire() messages to sockets registered for that satype.
+ *
+ * Revision 1.35  2000/08/24 17:03:00  rgb
+ * Corrected message size error return code for PF_KEYv2.
+ * Removed downward error prohibition.
+ *
+ * Revision 1.34  2000/08/21 16:32:26  rgb
+ * Re-formatted for cosmetic consistency and readability.
+ *
+ * Revision 1.33  2000/08/20 21:38:24  rgb
+ * Added a pfkey_reply parameter to pfkey_msg_interp(). (Momchil)
+ * Extended the upward message initiation of pfkey_sendmsg(). (Momchil)
+ *
+ * Revision 1.32  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.31  2000/05/16 03:04:00  rgb
+ * Updates for 2.3.99pre8 from MB.
+ *
+ * Revision 1.30  2000/05/10 19:22:21  rgb
+ * Use sklist private functions for 2.3.xx compatibility.
+ *
+ * Revision 1.29  2000/03/22 16:17:03  rgb
+ * Fixed SOCKOPS_WRAPPED macro for SMP (MB).
+ *
+ * Revision 1.28  2000/02/21 19:30:45  rgb
+ * Removed references to pkt_bridged for 2.3.47 compatibility.
+ *
+ * Revision 1.27  2000/02/14 21:07:00  rgb
+ * Fixed /proc/net/pf-key legend spacing.
+ *
+ * Revision 1.26  2000/01/22 03:46:59  rgb
+ * Fixed pfkey error return mechanism so that we are able to free the
+ * local copy of the pfkey_msg, plugging a memory leak and silencing
+ * the bad object free complaints.
+ *
+ * Revision 1.25  2000/01/21 06:19:44  rgb
+ * Moved pfkey_list_remove_socket() calls to before MOD_USE_DEC_COUNT.
+ * Added debugging to pfkey_upmsg.
+ *
+ * Revision 1.24  2000/01/10 16:38:23  rgb
+ * MB fixups for 2.3.x.
+ *
+ * Revision 1.23  1999/12/09 23:22:16  rgb
+ * Added more instrumentation for debugging 2.0 socket
+ * selection/reading.
+ * Removed erroneous 2.0 wait==NULL check bug in select.
+ *
+ * Revision 1.22  1999/12/08 20:32:16  rgb
+ * Tidied up 2.0.xx support, after major pfkey work, eliminating
+ * msg->msg_name twiddling in the process, since it is not defined
+ * for PF_KEYv2.
+ *
+ * Revision 1.21  1999/12/01 22:17:19  rgb
+ * Set skb->dev to zero on new skb in case it is a reused skb.
+ * Added check for skb_put overflow and freeing to avoid upmsg on error.
+ * Added check for wrong pfkey version and freeing to avoid upmsg on
+ * error.
+ * Shut off content dumping in pfkey_destroy.
+ * Added debugging message for size of buffer allocated for upmsg.
+ *
+ * Revision 1.20  1999/11/27 12:11:00  rgb
+ * Minor clean-up, enabling quiet operation of pfkey if desired.
+ *
+ * Revision 1.19  1999/11/25 19:04:21  rgb
+ * Update proc_fs code for pfkey to use dynamic registration.
+ *
+ * Revision 1.18  1999/11/25 09:07:17  rgb
+ * Implemented SENDERR macro for propagating error codes.
+ * Fixed error return code bug.
+ *
+ * Revision 1.17  1999/11/23 23:07:20  rgb
+ * Change name of pfkey_msg_parser to pfkey_msg_interp since it no longer
+ * parses. (PJO)
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.16  1999/11/20 22:00:22  rgb
+ * Moved socketlist type declarations and prototypes for shared use.
+ * Renamed reformatted and generically extended for use by other socket
+ * lists pfkey_{del,add}_open_socket to pfkey_list_{remove,insert}_socket.
+ *
+ * Revision 1.15  1999/11/18 04:15:09  rgb
+ * Make pfkey_data_ready temporarily available for 2.2.x testing.
+ * Clean up pfkey_destroy_socket() debugging statements.
+ * Add Peter Onion's code to send messages up to all listening sockets.
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ *
+ * Revision 1.14  1999/11/17 16:01:00  rgb
+ * Make pfkey_data_ready temporarily available for 2.2.x testing.
+ * Clean up pfkey_destroy_socket() debugging statements.
+ * Add Peter Onion's code to send messages up to all listening sockets.
+ * Changed #include "../../../lib/freeswan.h" to #include <freeswan.h>
+ * which works due to -Ilibfreeswan in the klips/net/ipsec/Makefile.
+ *
+ * Revision 1.13  1999/10/27 19:59:51  rgb
+ * Removed af_unix comments that are no longer relevant.
+ * Added debug prink statements.
+ * Added to the /proc output in pfkey_get_info.
+ * Made most functions non-static to enable oops tracing.
+ * Re-enable skb dequeueing and freeing.
+ * Fix skb_alloc() and skb_put() size bug in pfkey_upmsg().
+ *
+ * Revision 1.12  1999/10/26 17:05:42  rgb
+ * Complete re-ordering based on proto_ops structure order.
+ * Separated out proto_ops structures for 2.0.x and 2.2.x for clarity.
+ * Simplification to use built-in socket ops where possible for 2.2.x.
+ * Add shorter macros for compiler directives to visually clean-up.
+ * Add lots of sk skb dequeueing debugging statements.
+ * Added to the /proc output in pfkey_get_info.
+ *
+ * Revision 1.11  1999/09/30 02:55:10  rgb
+ * Bogus skb detection.
+ * Fix incorrect /proc/net/ipsec-eroute printk message.
+ *
+ * Revision 1.10  1999/09/21 15:22:13  rgb
+ * Temporary fix while I figure out the right way to destroy sockets.
+ *
+ * Revision 1.9  1999/07/08 19:19:44  rgb
+ * Fix pointer format warning.
+ * Fix missing member error under 2.0.xx kernels.
+ *
+ * Revision 1.8  1999/06/13 07:24:04  rgb
+ * Add more debugging.
+ *
+ * Revision 1.7  1999/06/10 05:24:17  rgb
+ * Clarified compiler directives.
+ * Renamed variables to reduce confusion.
+ * Used sklist_*_socket() kernel functions to simplify 2.2.x socket support.
+ * Added lots of sanity checking.
+ *
+ * Revision 1.6  1999/06/03 18:59:50  rgb
+ * More updates to 2.2.x socket support.  Almost works, oops at end of call.
+ *
+ * Revision 1.5  1999/05/25 22:44:05  rgb
+ * Start fixing 2.2 sockets.
+ *
+ * Revision 1.4  1999/04/29 15:21:34  rgb
+ * Move log to the end of the file.
+ * Eliminate min/max redefinition in #include <net/tcp.h>.
+ * Correct path for pfkey #includes
+ * Standardise an error return method.
+ * Add debugging instrumentation.
+ * Move message type checking to pfkey_msg_parse().
+ * Add check for errno incorrectly set.
+ * Add check for valid PID.
+ * Add check for reserved illegally set.
+ * Add check for message out of bounds.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ * Revision 1.2  1999/04/15 15:37:26  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.1.2.2  1999/04/13 20:37:12  rgb
+ * Header Title correction.
+ *
+ * Revision 1.1.2.1  1999/03/26 20:58:55  rgb
+ * Add pfkeyv2 support to KLIPS.
+ *
+ *
+ * RFC 2367
+ * PF_KEY_v2 Key Management API
+ */
diff -druN linux-noipsec/net/ipsec/pfkey_v2_parser.c linux/net/ipsec/pfkey_v2_parser.c
--- linux-noipsec/net/ipsec/pfkey_v2_parser.c   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/pfkey_v2_parser.c   Thu Nov 30 22:47:51 2000
@@ -0,0 +1,3433 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_netlink.c.
+ */
+
+char pfkey_v2_parser_c_version[] = "$Id$";
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* SPINLOCK_23 */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#define ip_chk_addr inet_addr_type
+#define IS_MYADDR RTN_LOCAL
+#endif
+#include <asm/checksum.h>
+#include <net/ip.h>
+#ifdef NETLINK_SOCK
+#include <linux/netlink.h>
+#else
+#include <net/netlink.h>
+#endif
+
+#include <linux/random.h>      /* get_random_bytes() */
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+#include "ipsec_xform.h"
+#include "ipsec_ah.h"
+#include "ipsec_esp.h"
+#include "ipsec_tunnel.h"
+#include "ipsec_rcv.h"
+#include "ipcomp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+#ifndef min
+#define min(a,b)       (((a)<(b))?(a):(b))
+#endif
+
+extern int des_set_key(caddr_t, caddr_t);
+
+struct sklist_t {
+       struct socket *sk;
+       struct sklist_t* next;
+} pfkey_sklist_head, *pfkey_sklist, *pfkey_sklist_prev;
+
+__u32 pfkey_msg_seq = 0;
+
+DEBUG_NO_STATIC int
+pfkey_alloc_tdb(struct tdb** tdb)
+{
+       int error = 0;
+       if(*tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_alloc_tdb: tdb struct already allocated\n");
+               SENDERR(EEXIST);
+       }
+
+       if((*tdb = kmalloc(sizeof(**tdb), GFP_ATOMIC) ) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_alloc_tdb: memory allocation error\n");
+               SENDERR(ENOMEM);
+       }
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_alloc_tdb: "
+                   "allocated tdb struct=%p.\n", tdb);
+
+       memset((caddr_t)*tdb, 0, sizeof(**tdb));
+ errlab:
+       return(error);
+}
+
+DEBUG_NO_STATIC int
+pfkey_alloc_eroute(struct eroute** eroute)
+{
+       int error = 0;
+       if(*eroute) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_alloc_eroute: eroute struct already allocated\n");
+               SENDERR(EEXIST);
+       }
+
+       if((*eroute = kmalloc(sizeof(**eroute), GFP_ATOMIC) ) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_alloc_eroute: memory allocation error\n");
+               SENDERR(ENOMEM);
+       }
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_alloc_eroute: "
+                   "allocated eroute struct=%p.\n", eroute);
+       memset((caddr_t)*eroute, 0, sizeof(**eroute));
+       (*eroute)->er_eaddr.sen_len =
+               (*eroute)->er_emask.sen_len = sizeof(struct sockaddr_encap);
+       (*eroute)->er_eaddr.sen_family =
+               (*eroute)->er_emask.sen_family = AF_ENCAP;
+       (*eroute)->er_eaddr.sen_type = SENT_IP4;
+       (*eroute)->er_emask.sen_type = 255;
+
+ errlab:
+       return(error);
+}
+
+DEBUG_NO_STATIC int
+pfkey_sa_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       struct sadb_sa *pfkey_sa = (struct sadb_sa *)pfkey_ext;
+       int error = 0;
+       struct tdb* tdbp;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sa_process: .\n");
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sa_process: "
+                           "extr or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_ext->sadb_ext_type) {
+       case SADB_EXT_SA:
+               tdbp = extr->tdb;
+               break;
+       case SADB_X_EXT_SA2:
+               if(pfkey_alloc_tdb(&(extr->tdb2)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               tdbp = extr->tdb2;
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sa_process: invalid exttype=%d.\n",
+                           pfkey_ext->sadb_ext_type);
+               SENDERR(EINVAL);
+       }
+
+       tdbp->tdb_said.spi = pfkey_sa->sadb_sa_spi;
+       tdbp->tdb_replaywin = pfkey_sa->sadb_sa_replay;
+       tdbp->tdb_state = pfkey_sa->sadb_sa_state;
+       tdbp->tdb_flags = pfkey_sa->sadb_sa_flags;
+       tdbp->tdb_replaywin_lastseq = tdbp->tdb_replaywin_bitmap = 0;
+       
+       switch(tdbp->tdb_said.proto) {
+       case IPPROTO_AH:
+               tdbp->tdb_authalg = pfkey_sa->sadb_sa_auth;
+               tdbp->tdb_encalg = SADB_EALG_NONE;
+               break;
+       case IPPROTO_ESP:
+               tdbp->tdb_authalg = pfkey_sa->sadb_sa_auth;
+               tdbp->tdb_encalg = pfkey_sa->sadb_sa_encrypt;
+               break;
+       case IPPROTO_IPIP:
+               tdbp->tdb_authalg = AH_NONE;
+               tdbp->tdb_encalg = ESP_NONE;
+               break;
+#ifdef CONFIG_IPSEC_IPCOMP
+       case IPPROTO_COMP:
+               tdbp->tdb_authalg = AH_NONE;
+               tdbp->tdb_encalg = pfkey_sa->sadb_sa_encrypt;
+               break;
+#endif /* CONFIG_IPSEC_IPCOMP */
+       case 0:
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sa_process: "
+                           "unknown proto=%d.\n",
+                           tdbp->tdb_said.proto);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_lifetime_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_lifetime *pfkey_lifetime = (struct sadb_lifetime *)pfkey_ext;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_lifetime_process: .\n");
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_lifetime_process: "
+                           "extr or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_lifetime->sadb_lifetime_exttype) {
+       case SADB_EXT_LIFETIME_CURRENT:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_lifetime_process: "
+                           "lifetime_current not supported yet.\n");
+               SENDERR(EINVAL);
+               break;
+       case SADB_EXT_LIFETIME_HARD:
+               if(pfkey_lifetime->sadb_lifetime_allocations &&
+                  (!extr->tdb->tdb_lifetime_allocations_h ||
+                   (pfkey_lifetime->sadb_lifetime_allocations < extr->tdb->tdb_lifetime_allocations_h))) {
+                       extr->tdb->tdb_lifetime_allocations_h =
+                               pfkey_lifetime->sadb_lifetime_allocations;
+                       if(!extr->tdb->tdb_lifetime_allocations_s &&
+                          (extr->tdb->tdb_lifetime_allocations_h < extr->tdb->tdb_lifetime_allocations_s)) {
+                               extr->tdb->tdb_lifetime_allocations_s = extr->tdb->tdb_lifetime_allocations_h;
+                       }
+               }
+               if(pfkey_lifetime->sadb_lifetime_bytes &&
+                  (!extr->tdb->tdb_lifetime_bytes_h ||
+                   (pfkey_lifetime->sadb_lifetime_bytes < extr->tdb->tdb_lifetime_bytes_h))) {
+                       extr->tdb->tdb_lifetime_bytes_h =
+                               pfkey_lifetime->sadb_lifetime_bytes;
+                       if(!extr->tdb->tdb_lifetime_bytes_s &&
+                          (extr->tdb->tdb_lifetime_bytes_h < extr->tdb->tdb_lifetime_bytes_s)) {
+                               extr->tdb->tdb_lifetime_bytes_s = extr->tdb->tdb_lifetime_bytes_h;
+                       }
+               }
+               if(pfkey_lifetime->sadb_lifetime_addtime &&
+                  (!extr->tdb->tdb_lifetime_addtime_h ||
+                   (pfkey_lifetime->sadb_lifetime_addtime < extr->tdb->tdb_lifetime_addtime_h))) {
+                       extr->tdb->tdb_lifetime_addtime_h =
+                               pfkey_lifetime->sadb_lifetime_addtime;
+                       if(extr->tdb->tdb_lifetime_addtime_s &&
+                          (extr->tdb->tdb_lifetime_addtime_h < extr->tdb->tdb_lifetime_addtime_s)) {
+                               extr->tdb->tdb_lifetime_addtime_s = extr->tdb->tdb_lifetime_addtime_h;
+                       }
+               }
+               if(pfkey_lifetime->sadb_lifetime_usetime &&
+                  (!extr->tdb->tdb_lifetime_usetime_h ||
+                   (pfkey_lifetime->sadb_lifetime_usetime < extr->tdb->tdb_lifetime_usetime_h))) {
+                       extr->tdb->tdb_lifetime_usetime_h =
+                               pfkey_lifetime->sadb_lifetime_usetime;
+                       if(extr->tdb->tdb_lifetime_usetime_s &&
+                          (extr->tdb->tdb_lifetime_usetime_h < extr->tdb->tdb_lifetime_usetime_s)) {
+                               extr->tdb->tdb_lifetime_usetime_s = extr->tdb->tdb_lifetime_usetime_h;
+                       }
+               }
+               break;
+       case SADB_EXT_LIFETIME_SOFT:
+               if(pfkey_lifetime->sadb_lifetime_allocations &&
+                  (!extr->tdb->tdb_lifetime_allocations_s ||
+                   (pfkey_lifetime->sadb_lifetime_allocations < extr->tdb->tdb_lifetime_allocations_s))) {
+                       extr->tdb->tdb_lifetime_allocations_s =
+                               pfkey_lifetime->sadb_lifetime_allocations;
+                       if(extr->tdb->tdb_lifetime_allocations_h &&
+                          (extr->tdb->tdb_lifetime_allocations_h < extr->tdb->tdb_lifetime_allocations_s)) {
+                               extr->tdb->tdb_lifetime_allocations_s = extr->tdb->tdb_lifetime_allocations_h;
+                       }
+               }
+               if(pfkey_lifetime->sadb_lifetime_bytes &&
+                  (!extr->tdb->tdb_lifetime_bytes_s ||
+                   (pfkey_lifetime->sadb_lifetime_bytes < extr->tdb->tdb_lifetime_bytes_s))) {
+                       extr->tdb->tdb_lifetime_bytes_s =
+                               pfkey_lifetime->sadb_lifetime_bytes;
+                       if(extr->tdb->tdb_lifetime_bytes_h &&
+                          (extr->tdb->tdb_lifetime_bytes_h < extr->tdb->tdb_lifetime_bytes_s)) {
+                               extr->tdb->tdb_lifetime_bytes_s = extr->tdb->tdb_lifetime_bytes_h;
+                       }
+               }
+               if(pfkey_lifetime->sadb_lifetime_addtime &&
+                  (!extr->tdb->tdb_lifetime_addtime_s ||
+                   (pfkey_lifetime->sadb_lifetime_addtime < extr->tdb->tdb_lifetime_addtime_s))) {
+                       extr->tdb->tdb_lifetime_addtime_s =
+                               pfkey_lifetime->sadb_lifetime_addtime;
+                       if(extr->tdb->tdb_lifetime_addtime_h &&
+                          (extr->tdb->tdb_lifetime_addtime_h < extr->tdb->tdb_lifetime_addtime_s)) {
+                               extr->tdb->tdb_lifetime_addtime_s = extr->tdb->tdb_lifetime_addtime_h;
+                       }
+               }
+               if(pfkey_lifetime->sadb_lifetime_usetime &&
+                  (!extr->tdb->tdb_lifetime_usetime_s ||
+                   (pfkey_lifetime->sadb_lifetime_usetime < extr->tdb->tdb_lifetime_usetime_s))) {
+                       extr->tdb->tdb_lifetime_usetime_s =
+                               pfkey_lifetime->sadb_lifetime_usetime;
+                       if(extr->tdb->tdb_lifetime_usetime_h &&
+                          (extr->tdb->tdb_lifetime_usetime_h < extr->tdb->tdb_lifetime_usetime_s)) {
+                               extr->tdb->tdb_lifetime_usetime_s = extr->tdb->tdb_lifetime_usetime_h;
+                       }
+               }
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug: pfkey_lifetime_process: invalid exttype=%d.\n",
+                           pfkey_ext->sadb_ext_type);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_address_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       int saddr_len = 0;
+       char ipaddr_txt[ADDRTOA_BUF];
+       unsigned char **sap;
+       struct sadb_address *pfkey_address = (struct sadb_address *)pfkey_ext;
+       struct sockaddr* s = (struct sockaddr*)((char*)pfkey_address + sizeof(*pfkey_address));
+       struct tdb* tdbp;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_address_process:\n");
+       
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process:\n"
+                           "extr or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(s->sa_family) {
+       case AF_INET:
+               saddr_len = sizeof(struct sockaddr_in);
+               addrtoa(((struct sockaddr_in*)s)->sin_addr, 0, ipaddr_txt, sizeof(ipaddr_txt));
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found address family=%d, AF_INET, %s.\n",
+                           s->sa_family, ipaddr_txt);
+               break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+       case AF_INET6:
+               saddr_len = sizeof(struct sockaddr_in6);
+               break;
+#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: s->sa_family=%d not supported.\n",
+                           s->sa_family);
+               SENDERR(EPFNOSUPPORT);
+       }
+       
+       switch(pfkey_address->sadb_address_exttype) {
+       case SADB_EXT_ADDRESS_SRC:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found src address.\n");
+               sap = (unsigned char **)&(extr->tdb->tdb_addr_s);
+               extr->tdb->tdb_addr_s_size = saddr_len;
+               break;
+       case SADB_EXT_ADDRESS_DST:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found dst address.\n");
+               sap = (unsigned char **)&(extr->tdb->tdb_addr_d);
+               extr->tdb->tdb_addr_d_size = saddr_len;
+               break;
+       case SADB_EXT_ADDRESS_PROXY:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found proxy address.\n");
+               sap = (unsigned char **)&(extr->tdb->tdb_addr_p);
+               extr->tdb->tdb_addr_p_size = saddr_len;
+               break;
+       case SADB_X_EXT_ADDRESS_DST2:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found 2nd dst address.\n");
+               if(pfkey_alloc_tdb(&(extr->tdb2)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->tdb2->tdb_addr_d);
+               extr->tdb2->tdb_addr_d_size = saddr_len;
+               break;
+       case SADB_X_EXT_ADDRESS_SRC_FLOW:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found src flow address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_eaddr.sen_ip_src);
+               break;
+       case SADB_X_EXT_ADDRESS_DST_FLOW:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found dst flow address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_eaddr.sen_ip_dst);
+               break;
+       case SADB_X_EXT_ADDRESS_SRC_MASK:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found src mask address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_emask.sen_ip_src);
+               break;
+       case SADB_X_EXT_ADDRESS_DST_MASK:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: found dst mask address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_emask.sen_ip_dst);
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: unrecognised ext_type=%d.\n",
+                           pfkey_address->sadb_address_exttype);
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_address->sadb_address_exttype) {
+       case SADB_EXT_ADDRESS_SRC:
+       case SADB_EXT_ADDRESS_DST:
+       case SADB_EXT_ADDRESS_PROXY:
+       case SADB_X_EXT_ADDRESS_DST2:
+               if(!(*sap = kmalloc(saddr_len, GFP_KERNEL))) {
+                       SENDERR(ENOMEM);
+               }
+               memcpy(*sap, s, saddr_len);
+               break;
+       default:
+               if(s->sa_family != AF_INET) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: s->sa_family=%d not supported.\n",
+                                   s->sa_family);
+                       SENDERR(EPFNOSUPPORT);
+               }
+               (unsigned int)(*sap) = ((struct sockaddr_in*)s)->sin_addr.s_addr;
+#ifdef CONFIG_IPSEC_DEBUG
+               if(extr->eroute) {
+                       char buf1[64], buf2[64];
+                       if (debug_pfkey) {
+                               subnettoa(extr->eroute->er_eaddr.sen_ip_src,
+                                         extr->eroute->er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+                               subnettoa(extr->eroute->er_eaddr.sen_ip_dst,
+                                         extr->eroute->er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_address_parse: "
+                                           "extr->eroute set to %s->%s\n",
+                                           buf1, buf2);
+                       }
+               }
+#endif /* CONFIG_IPSEC_DEBUG */
+       }
+
+       tdbp = extr->tdb;
+       switch(pfkey_address->sadb_address_exttype) {
+       case SADB_X_EXT_ADDRESS_DST2:
+               tdbp = extr->tdb2;
+       case SADB_EXT_ADDRESS_DST:
+               if(s->sa_family == AF_INET) {
+                       tdbp->tdb_said.dst.s_addr = ((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr.s_addr;
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: tdbp->tdb_said.dst.s_addr=%08x,\n"
+                                   "klips_debug:                     ((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr.s_addr=%08x,\n",
+                                   tdbp->tdb_said.dst.s_addr,
+                                   ((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr.s_addr
+                               );
+                       addrtoa(((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr,
+                               0,
+                               ipaddr_txt,
+                               sizeof(ipaddr_txt));
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: tdb_said.dst set to %s.\n",
+                                   ipaddr_txt);
+               } else {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: "
+                                   "uh, tdb_said.dst doesn't do address family=%d yet, "
+                                   "said will be invalid.\n",
+                                   s->sa_family);
+               }
+       default:
+       }
+       
+       /* XXX check if port!=0 */
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_address_process: successful.\n");
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_key_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+        struct sadb_key *pfkey_key = (struct sadb_key *)pfkey_ext;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_key_process: .\n");
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_key_process: "
+                           "extr or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+        switch(pfkey_key->sadb_key_exttype) {
+        case SADB_EXT_KEY_AUTH:
+                extr->tdb->tdb_key_bits_a = pfkey_key->sadb_key_bits;
+               if(!(extr->tdb->tdb_key_a = kmalloc(DIVUP(pfkey_key->sadb_key_bits, 8), GFP_KERNEL))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_key_process: memory allocation error.\n");
+                       SENDERR(ENOMEM);
+               }
+               memcpy(extr->tdb->tdb_key_a,
+                      (char*)pfkey_key + sizeof(struct sadb_key),
+                      DIVUP(pfkey_key->sadb_key_bits, 8));
+               break;
+       case SADB_EXT_KEY_ENCRYPT: /* Key(s) */
+               extr->tdb->tdb_key_bits_e = pfkey_key->sadb_key_bits;
+               if(!(extr->tdb->tdb_key_e = kmalloc(DIVUP(pfkey_key->sadb_key_bits, 8), GFP_KERNEL))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_key_process: memory allocation error.\n");
+                       SENDERR(ENOMEM);
+               }
+               memcpy(extr->tdb->tdb_key_e,
+                      (char*)pfkey_key + sizeof(struct sadb_key),
+                      DIVUP(pfkey_key->sadb_key_bits, 8));
+               break;
+       default:
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_key_process: success.\n");
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_ident_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+        struct sadb_ident *pfkey_ident = (struct sadb_ident *)pfkey_ext;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_ident_process: .\n");
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_ident_process: "
+                           "extr or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_ident->sadb_ident_exttype) {
+       case SADB_EXT_IDENTITY_SRC:
+               extr->tdb->tdb_ident_type_s = pfkey_ident->sadb_ident_type;
+               extr->tdb->tdb_ident_id_s = pfkey_ident->sadb_ident_id;
+               extr->tdb->tdb_ident_len_s = pfkey_ident->sadb_ident_len -
+                       (sizeof(struct sadb_ident) / IPSEC_PFKEYv2_ALIGN);
+               if(extr->tdb->tdb_ident_len_s) {
+                       if(!(extr->tdb->tdb_ident_data_s
+                            = kmalloc(pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN,
+                                      GFP_KERNEL))) {
+                               SENDERR(ENOMEM);
+                       }
+                       memcpy(extr->tdb->tdb_ident_data_s,
+                              (char*)pfkey_ident + sizeof(struct sadb_ident),
+                              pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN);
+               } else {
+                       extr->tdb->tdb_ident_data_s = NULL;
+               }
+               break;
+       case SADB_EXT_IDENTITY_DST: /* Identity(ies) */
+               extr->tdb->tdb_ident_type_d = pfkey_ident->sadb_ident_type;
+               extr->tdb->tdb_ident_id_d = pfkey_ident->sadb_ident_id;
+               extr->tdb->tdb_ident_len_d = pfkey_ident->sadb_ident_len -
+                       sizeof(struct sadb_ident) / IPSEC_PFKEYv2_ALIGN;
+               if(extr->tdb->tdb_ident_len_d) {
+                       if(!(extr->tdb->tdb_ident_data_d
+                            = kmalloc(pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN,
+                                      GFP_KERNEL))) {
+                               SENDERR(ENOMEM);
+                       }
+                       memcpy(extr->tdb->tdb_ident_data_d,
+                              (char*)pfkey_ident + sizeof(struct sadb_ident),
+                              pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN);
+               } else {
+                       extr->tdb->tdb_ident_data_d = NULL;
+               }
+               break;
+       default:
+               SENDERR(EINVAL);
+       }
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_sens_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_sens_process: Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+        SENDERR(EINVAL); /* don't process these yet */
+ errlab:
+        return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_prop_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_prop_process: Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+       
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_supported_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_supported_process: Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_spirange_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_spirange_process: .\n");
+/* errlab: */
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_kmprivate_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_x_kmprivate_process: Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_satype_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_x_satype *pfkey_x_satype = (struct sadb_x_satype *)pfkey_ext;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_x_satype_process: .\n");
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug: pfkey_x_satype_process: "
+                           "extr or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_alloc_tdb(&(extr->tdb2)) == ENOMEM) {
+               SENDERR(ENOMEM);
+       }
+       if(!(extr->tdb2->tdb_said.proto = satype2proto(pfkey_x_satype->sadb_x_satype_satype))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug: pfkey_x_satype_process: proto lookup from satype=%d failed.\n",
+                           pfkey_x_satype->sadb_x_satype_satype);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_debug_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_x_debug *pfkey_x_debug = (struct sadb_x_debug *)pfkey_ext;
+
+       if(!pfkey_x_debug) {
+               printk("klips_debug:pfkey_x_debug_process: null pointer passed in\n");
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_debug_process: .\n");
+
+#ifdef CONFIG_IPSEC_DEBUG
+               if(pfkey_x_debug->sadb_x_debug_netlink >>
+                  (sizeof(pfkey_x_debug->sadb_x_debug_netlink) * 8 - 1)) {
+                       pfkey_x_debug->sadb_x_debug_netlink &=
+                               ~(1 << (sizeof(pfkey_x_debug->sadb_x_debug_netlink) * 8 -1));
+                       debug_tunnel  |= pfkey_x_debug->sadb_x_debug_tunnel;
+                       debug_netlink |= pfkey_x_debug->sadb_x_debug_netlink;
+                       debug_xform   |= pfkey_x_debug->sadb_x_debug_xform;
+                       debug_eroute  |= pfkey_x_debug->sadb_x_debug_eroute;
+                       debug_spi     |= pfkey_x_debug->sadb_x_debug_spi;
+                       debug_radij   |= pfkey_x_debug->sadb_x_debug_radij;
+                       debug_esp     |= pfkey_x_debug->sadb_x_debug_esp;
+                       debug_ah      |= pfkey_x_debug->sadb_x_debug_ah;
+                       debug_rcv     |= pfkey_x_debug->sadb_x_debug_rcv;
+                       debug_pfkey   |= pfkey_x_debug->sadb_x_debug_pfkey;
+#ifdef CONFIG_IPSEC_IPCOMP
+                       sysctl_ipsec_debug_ipcomp  |= pfkey_x_debug->sadb_x_debug_ipcomp;
+#endif /* CONFIG_IPSEC_IPCOMP */
+                       sysctl_ipsec_debug_verbose |= pfkey_x_debug->sadb_x_debug_verbose;
+                       if(debug_netlink)
+                               printk("klips_debug:pfkey_x_debug_process: set\n");
+               } else {
+                       if(debug_netlink)
+                               printk("klips_debug:pfkey_x_debug_process: unset\n");
+                       debug_tunnel  &= pfkey_x_debug->sadb_x_debug_tunnel;
+                       debug_netlink &= pfkey_x_debug->sadb_x_debug_netlink;
+                       debug_xform   &= pfkey_x_debug->sadb_x_debug_xform;
+                       debug_eroute  &= pfkey_x_debug->sadb_x_debug_eroute;
+                       debug_spi     &= pfkey_x_debug->sadb_x_debug_spi;
+                       debug_radij   &= pfkey_x_debug->sadb_x_debug_radij;
+                       debug_esp     &= pfkey_x_debug->sadb_x_debug_esp;
+                       debug_ah      &= pfkey_x_debug->sadb_x_debug_ah;
+                       debug_rcv     &= pfkey_x_debug->sadb_x_debug_rcv;
+                       debug_pfkey   &= pfkey_x_debug->sadb_x_debug_pfkey;
+#ifdef CONFIG_IPSEC_IPCOMP
+                       sysctl_ipsec_debug_ipcomp  &= pfkey_x_debug->sadb_x_debug_ipcomp;
+#endif /* CONFIG_IPSEC_IPCOMP */
+                       sysctl_ipsec_debug_verbose &= pfkey_x_debug->sadb_x_debug_verbose;
+               }
+#else /* CONFIG_IPSEC_DEBUG */
+               printk("klips_debug:pfkey_x_debug_process: debugging not enabled\n");
+               SENDERR(EINVAL);
+#endif /* CONFIG_IPSEC_DEBUG */
+       
+errlab:
+       return error;
+}
+
+
+DEBUG_NO_STATIC int
+pfkey_tdb_init(struct tdb *tdbp, struct sadb_ext **extensions)
+{
+        int i;
+        int error = 0;
+        char sa[SATOA_BUF];
+       char ipaddr_txt[ADDRTOA_BUF];
+       char ipaddr2_txt[ADDRTOA_BUF];
+       unsigned char kb[AHMD596_BLKLEN];
+
+       if(!tdbp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_tdb_init: "
+                           "tdbp is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       satoa(tdbp->tdb_said, 0, sa, SATOA_BUF);
+
+        KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_tdb_init: (pfkey defined) called for SA:%s\n", sa);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_tdb_init: calling init routine of %s%s%s\n",
+                   TDB_XFORM_NAME(tdbp));
+       
+       switch(tdbp->tdb_said.proto) {
+               
+#ifdef CONFIG_IPSEC_IPIP
+       case IPPROTO_IPIP: {
+               addrtoa(((struct sockaddr_in*)(tdbp->tdb_addr_s))->sin_addr,
+                       0,
+                       ipaddr_txt, sizeof(ipaddr_txt));
+               addrtoa(((struct sockaddr_in*)(tdbp->tdb_addr_d))->sin_addr,
+                       0,
+                       ipaddr2_txt, sizeof(ipaddr_txt));
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_tdb_init: "
+                           "(pfkey defined) IPIP tdb set for %s->%s.\n",
+                           ipaddr_txt,
+                           ipaddr2_txt);
+       }
+       break;
+#endif /* !CONFIG_IPSEC_IPIP */
+#ifdef CONFIG_IPSEC_AH
+       case IPPROTO_AH:
+               switch(tdbp->tdb_authalg) {
+# ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+               case AH_MD5: {
+                       unsigned char *akp;
+                       MD5_CTX *ictx;
+                       MD5_CTX *octx;
+                       
+                       if(tdbp->tdb_key_bits_a != (AHMD596_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_tdb_init: incorrect key size: %d bits"
+                                           "-- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           tdbp->tdb_key_bits_a, AHMD596_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                           "klips_debug:pfkey_tdb_init: hmac md5-96 key is 0x%08lx %08lx %08lx %08lx\n",
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+0)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+1)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+2)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+3)));
+#  endif
+                       
+                       tdbp->tdb_auth_bits = AHMD596_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = tdbp->tdb_key_a;
+                       
+                       if((tdbp->tdb_key_a = (caddr_t)
+                           kmalloc((tdbp->tdb_key_a_size = sizeof(struct md5_ctx)),
+                                   GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+
+                       for (i = 0; i < DIVUP(tdbp->tdb_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->ictx);
+                       MD5Init(ictx);
+                       MD5Update(ictx, kb, AHMD596_BLKLEN);
+
+                       for (i = 0; i < AHMD596_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->octx);
+                       MD5Init(octx);
+                       MD5Update(octx, kb, AHMD596_BLKLEN);
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: MD5 ictx=0x%08x %08x %08x %08x"
+                                   " octx=0x%08x %08x %08x %08x\n",
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif
+                       
+                               /* zero key buffer -- paranoid */
+                       memset(akp, 0, DIVUP(tdbp->tdb_key_bits_a, BITS_PER_OCTET));
+               }
+               break;
+# endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+# ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+               case AH_SHA: {
+                       
+                       unsigned char *akp;
+                       SHA1_CTX *ictx;
+                       SHA1_CTX *octx;
+                       
+                       if(tdbp->tdb_key_bits_a != (AHSHA196_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_tdb_init: incorrect key size: %d bits"
+                                           "-- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           tdbp->tdb_key_bits_a, AHSHA196_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: hmac sha1-96 key is 0x%08lx %08lx %08lx %08lx\n",
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+0)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+1)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+2)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+3)));
+#  endif
+                       
+                       tdbp->tdb_auth_bits = AHSHA196_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = tdbp->tdb_key_a;
+                       
+                       if((tdbp->tdb_key_a = (caddr_t)
+                           kmalloc((tdbp->tdb_key_a_size = sizeof(struct sha1_ctx)),
+                                   GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+                       
+                       for (i = 0; i < DIVUP(tdbp->tdb_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx);
+                       SHA1Init(ictx);
+                       SHA1Update(ictx, kb, AHSHA196_BLKLEN);
+
+                       for (i = 0; i < AHSHA196_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->octx);
+                       SHA1Init(octx);
+                       SHA1Update(octx, kb, AHSHA196_BLKLEN);
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: SHA1 ictx=0x%08x %08x %08x %08x"
+                                   " octx=0x%08x %08x %08x %08x\n", 
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif                       
+                               /* zero key buffer -- paranoid */
+                       memset(akp, 0, DIVUP(tdbp->tdb_key_bits_a, BITS_PER_OCTET));
+               }
+               break;
+# endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_tdb_init: "
+                                   "authalg=%d support not available in the kernel",
+                                   tdbp->tdb_authalg);
+                       SENDERR(EINVAL);
+               }
+       break;
+#endif /* CONFIG_IPSEC_AH */
+#ifdef CONFIG_IPSEC_ESP
+       case IPPROTO_ESP: {
+               unsigned char *akp, *ekp;
+               
+               switch(tdbp->tdb_encalg) {
+# ifdef CONFIG_IPSEC_ENC_3DES
+               case ESP_3DES:
+# endif /* CONFIG_IPSEC_ENC_3DES */
+# if defined(CONFIG_IPSEC_ENC_3DES)
+                       if((tdbp->tdb_iv = (caddr_t)
+                           kmalloc((tdbp->tdb_iv_size = EMT_ESPDES_IV_SZ), GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+                       get_random_bytes((void *)tdbp->tdb_iv, EMT_ESPDES_IV_SZ);
+                       tdbp->tdb_iv_bits = tdbp->tdb_iv_size * 8;
+                       break;
+# endif /* defined(CONFIG_IPSEC_ENC_3DES) */
+               case ESP_NONE:
+# ifdef CONFIG_IPSEC_ENC_NULL
+               case ESP_NULL:
+# endif /* CONFIG_IPSEC_ENC_NULL */
+                       break;
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_tdb_init: "
+                                   "encalg=%d support not available in the kernel",
+                                   tdbp->tdb_encalg);
+                       SENDERR(EINVAL);
+               }
+               
+               switch(tdbp->tdb_encalg) {
+# ifdef CONFIG_IPSEC_ENC_3DES
+               case ESP_3DES:
+                       if(tdbp->tdb_key_bits_e != (EMT_ESP3DES_KEY_SZ * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_tdb_init: incorrect encryption"
+                                           "key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           tdbp->tdb_key_bits_e, EMT_ESP3DES_KEY_SZ * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+                       /* save encryption key pointer */
+                       ekp = tdbp->tdb_key_e;
+                       
+                       if((tdbp->tdb_key_e = (caddr_t)
+                           kmalloc((tdbp->tdb_key_e_size = 3 * sizeof(struct des_eks)),
+                                   GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+                       
+                       for(i = 0; i < 3; i++) {
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                               KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                           "klips_debug:pfkey_tdb_init: 3des key %d/3 is 0x%08lx%08lx\n",
+                                           i + 1,
+                                           ntohl(*((__u32 *)tdbp->tdb_key_e + i * 2)),
+                                           ntohl(*((__u32 *)tdbp->tdb_key_e + i * 2 + 1)));
+#  endif
+                               error = des_set_key((caddr_t)ekp + EMT_ESPDES_KEY_SZ * i,
+                                                   (caddr_t)&((struct des_eks*)(tdbp->tdb_key_e))[i]);
+                               if (error == -1)
+                                       printk("klips_debug:pfkey_tdb_init: parity error in des key %d/3\n", i + 1);
+                               else if (error == -2)
+                                       printk("klips_debug:pfkey_tdb_init: illegal weak des key %d/3\n", i + 1);
+                               if (error) {
+                                       memset(tdbp->tdb_key_e, 0, 3 * sizeof(struct des_eks));
+                                       kfree(tdbp->tdb_key_e);
+                                       memset(ekp, 0, DIVUP(tdbp->tdb_key_bits_e, BITS_PER_OCTET));
+                                       SENDERR(EINVAL);
+                               }
+                       }
+
+                       /* paranoid */
+                       memset(ekp, 0, DIVUP(tdbp->tdb_key_bits_e, BITS_PER_OCTET));
+                       
+                       break;
+# endif /* CONFIG_IPSEC_ENC_3DES */
+# ifdef CONFIG_IPSEC_ENC_NULL
+               case ESP_NULL:
+# endif /* CONFIG_IPSEC_ENC_NULL */
+               case ESP_NONE:
+                       break;
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_tdb_init: "
+                                   "encalg=%d support not available in the kernel",
+                                   tdbp->tdb_encalg);
+                       SENDERR(EINVAL);
+               }
+               
+               switch(tdbp->tdb_authalg) {
+# ifdef CONFIG_IPSEC_AUTH_HMAC_MD5
+               case AH_MD5: {
+                       MD5_CTX *ictx;
+                       MD5_CTX *octx;
+
+                       if(tdbp->tdb_key_bits_a != (AHMD596_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_tdb_init: incorrect authorisation"
+                                           " key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           tdbp->tdb_key_bits_a, AHMD596_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: hmac md5-96 key is 0x%08lx %08lx %08lx %08lx\n",
+                                   ntohl(*(((__u32 *)(tdbp->tdb_key_a))+0)),
+                                   ntohl(*(((__u32 *)(tdbp->tdb_key_a))+1)),
+                                   ntohl(*(((__u32 *)(tdbp->tdb_key_a))+2)),
+                                   ntohl(*(((__u32 *)(tdbp->tdb_key_a))+3)));
+#  endif
+                       tdbp->tdb_auth_bits = AHMD596_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = tdbp->tdb_key_a;
+                       
+                       if((tdbp->tdb_key_a = (caddr_t)
+                           kmalloc((tdbp->tdb_key_a_size = sizeof(struct md5_ctx)),
+                                   GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+                       
+                       for (i = 0; i < DIVUP(tdbp->tdb_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->ictx);
+                       MD5Init(ictx);
+                       MD5Update(ictx, kb, AHMD596_BLKLEN);
+
+                       for (i = 0; i < AHMD596_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &(((struct md5_ctx*)(tdbp->tdb_key_a))->octx);
+                       MD5Init(octx);
+                       MD5Update(octx, kb, AHMD596_BLKLEN);
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: MD5 ictx=0x%08x %08x %08x %08x"
+                                   " octx=0x%08x %08x %08x %08x\n",
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif
+                       /* paranoid */
+                       memset(akp, 0, DIVUP(tdbp->tdb_key_bits_a, BITS_PER_OCTET));
+                       break;
+               }
+# endif /* CONFIG_IPSEC_AUTH_HMAC_MD5 */
+# ifdef CONFIG_IPSEC_AUTH_HMAC_SHA1
+               case AH_SHA: {
+                       SHA1_CTX *ictx;
+                       SHA1_CTX *octx;
+
+                       if(tdbp->tdb_key_bits_a != (AHSHA196_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_tdb_init: incorrect authorisation"
+                                           " key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           tdbp->tdb_key_bits_a, AHSHA196_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: hmac sha1-96 key is 0x%08lx %08lx %08lx %08lx\n",
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+0)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+1)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+2)),
+                                   ntohl(*(((__u32 *)tdbp->tdb_key_a)+3)));
+#  endif
+                       tdbp->tdb_auth_bits = AHSHA196_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = tdbp->tdb_key_a;
+
+                       if((tdbp->tdb_key_a = (caddr_t)
+                           kmalloc((tdbp->tdb_key_a_size = sizeof(struct sha1_ctx)),
+                                   GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+                       
+                       for (i = 0; i < DIVUP(tdbp->tdb_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct sha1_ctx*)(tdbp->tdb_key_a))->ictx);
+                       SHA1Init(ictx);
+                       SHA1Update(ictx, kb, AHSHA196_BLKLEN);
+
+                       for (i = 0; i < AHSHA196_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &((struct sha1_ctx*)(tdbp->tdb_key_a))->octx;
+                       SHA1Init(octx);
+                       SHA1Update(octx, kb, AHSHA196_BLKLEN);
+                       
+#  if 0 /* we don't really want to print these unless there are really big problems */
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "klips_debug:pfkey_tdb_init: SHA1 ictx=0x%08x %08x %08x %08x"
+                                   " octx=0x%08x %08x %08x %08x\n",
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif
+                       memset(akp, 0, DIVUP(tdbp->tdb_key_bits_a, BITS_PER_OCTET));
+                       break;
+               }
+# endif /* CONFIG_IPSEC_AUTH_HMAC_SHA1 */
+               case AH_NONE:
+                       break;
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_tdb_init: "
+                                   "authalg=%d support not available in the kernel.\n",
+                                   tdbp->tdb_authalg);
+                       SENDERR(EINVAL);
+               }
+       }
+                       break;
+#endif /* !CONFIG_IPSEC_ESP */
+#ifdef CONFIG_IPSEC_IPCOMP
+       case IPPROTO_COMP:
+               tdbp->tdb_comp_adapt_tries = 0;
+               tdbp->tdb_comp_adapt_skip = 0;
+               tdbp->tdb_comp_ratio_cbytes = 0;
+               tdbp->tdb_comp_ratio_dbytes = 0;
+               break;
+#endif /* CONFIG_IPSEC_IPCOMP */
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_tdb_init: "
+                           "proto=%d unknown.\n",
+                           tdbp->tdb_said.proto);
+               SENDERR(EINVAL);
+       }
+       
+ errlab:
+       return(error);
+}
+
+
+int
+pfkey_safe_build(int error, struct sadb_ext *extensions[SADB_MAX+1])
+{
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_safe_build: error=%d\n", error);
+       if (!error) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_safe_build:"
+                           "success.\n");
+               return 1;
+       } else {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_safe_build:"
+                           "caught error %d\n", error);
+               pfkey_extensions_free(extensions);
+               return 0;
+       }
+}
+
+
+DEBUG_NO_STATIC int
+pfkey_getspi_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       ipsec_spi_t minspi = htonl(256), maxspi = htonl(-1L);
+       int found_avail = 0;
+       struct tdb *tdbq;
+       char sa[SATOA_BUF];
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getspi_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_getspi_parse: error, extr or extr->tdb pointer NULL\n");
+               SENDERR(EINVAL);
+       }
+
+       if(extensions[SADB_EXT_SPIRANGE]) {
+               minspi = ((struct sadb_spirange *)extensions[SADB_EXT_SPIRANGE])->sadb_spirange_min;
+               maxspi = ((struct sadb_spirange *)extensions[SADB_EXT_SPIRANGE])->sadb_spirange_max;
+       }
+
+       if(maxspi == minspi) {
+               extr->tdb->tdb_said.spi = maxspi;
+               if((tdbq = gettdb(&(extr->tdb->tdb_said)))) {
+                       satoa(extr->tdb->tdb_said, 0, sa, SATOA_BUF);
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug: pfkey_getspi_parse: EMT_GETSPI found an old Tunnel Descriptor Block\n"
+                                   "klips_debug:                for SA: %s, delete it first.\n", sa);
+                       SENDERR(EEXIST);
+               } else {
+                       found_avail = 1;
+               }
+       } else {
+               int i = 0;
+               __u32 rand_val;
+               __u32 spi_diff;
+               while( ( i < (spi_diff = (ntohl(maxspi) - ntohl(minspi)))) && !found_avail ) {
+                       get_random_bytes((void*) &(rand_val),
+                                        /* sizeof(extr->tdb->tdb_said.spi) */
+                                        ( (spi_diff < (2^8))  ? 1 :
+                                          ( (spi_diff < (2^16)) ? 2 :
+                                            ( (spi_diff < (2^24)) ? 3 :
+                                          4 ) ) ) );
+                       extr->tdb->tdb_said.spi = htonl(ntohl(minspi) +
+                                             (rand_val %
+                                             (spi_diff + 1)));
+                       i++;
+                       tdbq = gettdb(&(extr->tdb->tdb_said));
+                       if(!tdbq) {
+                               found_avail = 1;
+                       }
+               }
+       }
+
+       satoa(extr->tdb->tdb_said, 0, sa, SATOA_BUF);
+
+       if (!found_avail) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug: pfkey_getspi_parse: found an old Tunnel Descriptor Block\n"
+                           "klips_debug:                for SA: %s, delete it first.\n", sa);
+               SENDERR(EEXIST);
+       }
+
+       if(ip_chk_addr((unsigned long)extr->tdb->tdb_said.dst.s_addr) == IS_MYADDR) {
+               extr->tdb->tdb_flags |= EMT_INBOUND;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_getspi_parse: existing Tunnel Descriptor Block not found (this\n"
+                   "klips_debug:                is good) for SA: %s, %s-bound, allocating.\n",
+                   sa, extr->tdb->tdb_flags & EMT_INBOUND ? "in" : "out");
+       
+       /* XXX extr->tdb->tdb_rcvif = &(enc_softc[em->em_if].enc_if);*/
+       extr->tdb->tdb_rcvif = NULL;
+       extr->tdb->tdb_lifetime_addtime_c = jiffies/HZ;
+
+       extr->tdb->tdb_state = SADB_SASTATE_LARVAL;
+
+       if(!extr->tdb->tdb_lifetime_allocations_c) {
+               extr->tdb->tdb_lifetime_allocations_c += 1;
+       }
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_GETSPI,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply) &&
+            pfkey_safe_build(pfkey_sa_build(&extensions_reply[SADB_EXT_SA],
+                                            SADB_EXT_SA,
+                                            extr->tdb->tdb_said.spi,
+                                            0,
+                                            SADB_SASTATE_LARVAL,
+                                            0,
+                                            0,
+                                            0),
+                             extensions_reply) &&
+            pfkey_safe_build(pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                 SADB_EXT_ADDRESS_SRC,
+                                                 0, /*extr->tdb->tdb_said.proto,*/
+                                                 0,
+                                                 extr->tdb->tdb_addr_s),
+                             extensions_reply) &&
+            pfkey_safe_build(pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                 SADB_EXT_ADDRESS_DST,
+                                                 0, /*extr->tdb->tdb_said.proto,*/
+                                                 0,
+                                                 extr->tdb->tdb_addr_d),
+                             extensions_reply) )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "failed to build the getspi reply message extensions\n");
+               goto errlab;
+       }
+       
+       if((error = puttdb(extr->tdb))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "failed to add the larval SA with error=%d.\n",
+                           error);
+               goto errlab;
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getspi_parse: successful for SA: %s\n", sa);
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "failed to build the getspi reply message\n");
+               goto errlab;
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                                   "sending up getspi reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "sending up getspi reply message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_update_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct tdb* tdbq;
+       char sa[SATOA_BUF];
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_update_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state != SADB_SASTATE_MATURE) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "error, sa_state=%d must be MATURE=%d\n",
+                           ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state,
+                           SADB_SASTATE_MATURE);
+               SENDERR(EINVAL);
+       }
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: error, extr or extr->tdb pointer NULL\n");
+               SENDERR(EINVAL);
+       }
+
+       satoa(extr->tdb->tdb_said, 0, sa, SATOA_BUF);
+
+       spin_lock_bh(&tdb_lock);
+
+       tdbq = gettdb(&(extr->tdb->tdb_said));
+       if (!tdbq) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug: pfkey_update_parse: reserved Tunnel Descriptor Block\n"
+                           "klips_debug:            for SA: %s not found.  Call SADB_GETSPI first or call SADB_ADD instead.\n", sa);
+               SENDERR(EEXIST);
+       }
+
+       if(ip_chk_addr((unsigned long)extr->tdb->tdb_said.dst.s_addr) == IS_MYADDR) {
+               extr->tdb->tdb_flags |= EMT_INBOUND;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: pfkey_update_parse: existing Tunnel Descriptor Block found (this\n"
+                   "klips_debug:                is good) for SA: %s, %s-bound, updating.\n",
+                   sa, extr->tdb->tdb_flags & EMT_INBOUND ? "in" : "out");
+       
+       /* XXX extr->tdb->tdb_rcvif = &(enc_softc[em->em_if].enc_if);*/
+       extr->tdb->tdb_rcvif = NULL;
+       if ((error = pfkey_tdb_init(extr->tdb, extensions))) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "not successful for SA: %s, deleting.\n", sa);
+               ipsec_tdbwipe(extr->tdb);
+               SENDERR(-error);
+       }
+
+       extr->tdb->tdb_lifetime_addtime_c = tdbq->tdb_lifetime_addtime_c;
+       if((error = deltdbchain(tdbq))) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "error=%d, trouble deleting intermediate tdb for SA=%s.\n",
+                           error, sa);
+               SENDERR(-error);
+       }
+
+       spin_unlock_bh(&tdb_lock);
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_UPDATE,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->tdb->tdb_said.spi,
+                                                       extr->tdb->tdb_replaywin,
+                                                       extr->tdb->tdb_state,
+                                                       extr->tdb->tdb_authalg,
+                                                       extr->tdb->tdb_encalg,
+                                                       extr->tdb->tdb_flags),
+                                extensions_reply)
+            /* FIXME: The 3 lifetime extentions should only be sent if
+               non-zero. */
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_CURRENT],
+                                                             SADB_EXT_LIFETIME_CURRENT,
+                                                             extr->tdb->tdb_lifetime_allocations_c,
+                                                             extr->tdb->tdb_lifetime_bytes_c,
+                                                             extr->tdb->tdb_lifetime_addtime_c,
+                                                             extr->tdb->tdb_lifetime_usetime_c),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_HARD],
+                                                             SADB_EXT_LIFETIME_HARD,
+                                                             extr->tdb->tdb_lifetime_allocations_h,
+                                                             extr->tdb->tdb_lifetime_bytes_h,
+                                                             extr->tdb->tdb_lifetime_addtime_h,
+                                                             extr->tdb->tdb_lifetime_usetime_h),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_d),
+                                extensions_reply)
+#if 0
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_ident_data_s ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_SRC],
+                                                                                        SADB_EXT_IDENTITY_SRC,
+                                                                                        SADB_IDENTTYPE_PREFIX,
+                                                                                        0,
+                                                                                        extr->tdb->tdb_ident_data_s),
+                                                              extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_ident_data_d ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_DST],
+                                                                                        SADB_EXT_IDENTITY_DST,
+                                                                                        SADB_IDENTTYPE_PREFIX,
+                                                                                        0,
+                                                                                        extr->tdb->tdb_ident_data_d),
+                                                              extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_sens_ ? pfkey_safe_build(error = pfkey_sens_build(&extensions_reply[SADB_EXT_SENSITIVITY],
+                                                                                extr->tdb->tdb_sens_dpd,
+                                                                                extr->tdb->tdb_sens_sens_level,
+                                                                                extr->tdb->tdb_sens_sens_len,
+                                                                                extr->tdb->tdb_sens_sens_bitmap,
+                                                                                extr->tdb->tdb_sens_integ_level,
+                                                                                extr->tdb->tdb_sens_integ_len,
+                                                                                extr->tdb->tdb_sens_integ_bitmap),
+                                                       extensions_reply) : 1
+#endif
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "failed to build the update reply message extensions\n");
+               goto errlab;
+       }
+               
+       if((error = puttdb(extr->tdb))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "failed to add the mature SA with error=%d.\n",
+                           error);
+               goto errlab;
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_update_parse: successful for SA: %s\n", sa);
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "failed to build the update reply message\n");
+               goto errlab;
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                                   "sending up update reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "sending up update reply message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_add_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct tdb* tdbq;
+       char sa[SATOA_BUF];
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_add_parse: parsing add message\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state != SADB_SASTATE_MATURE) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: "
+                           "error, sa_state=%d must be MATURE=%d\n",
+                           ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state,
+                           SADB_SASTATE_MATURE);
+               SENDERR(EINVAL);
+       }
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: extr or extr->tdb pointer NULL\n");
+               SENDERR(EINVAL);
+       }
+
+       satoa(extr->tdb->tdb_said, 0, sa, SATOA_BUF);
+
+       tdbq = gettdb(&(extr->tdb->tdb_said));
+       if (tdbq) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: found an old Tunnel Descriptor Block\n"
+                           "klips_debug:                for SA: %s, delete it first.\n", sa);
+               SENDERR(EEXIST);
+       }
+
+       if(ip_chk_addr((unsigned long)extr->tdb->tdb_said.dst.s_addr) == IS_MYADDR) {
+               extr->tdb->tdb_flags |= EMT_INBOUND;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_add_parse: existing Tunnel Descriptor Block not found (this\n"
+                   "klips_debug:                is good) for SA: %s, %s-bound, allocating.\n",
+                   sa, extr->tdb->tdb_flags & EMT_INBOUND ? "in" : "out");
+       
+       /* XXX extr->tdb->tdb_rcvif = &(enc_softc[em->em_if].enc_if);*/
+       extr->tdb->tdb_rcvif = NULL;
+       
+       if ((error = pfkey_tdb_init(extr->tdb, extensions))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: not successful for SA: %s, deleting.\n", sa);
+               ipsec_tdbwipe(extr->tdb);
+               goto errlab;
+       }
+
+       extr->tdb->tdb_lifetime_addtime_c = jiffies / HZ;
+       if(!extr->tdb->tdb_lifetime_allocations_c) {
+               extr->tdb->tdb_lifetime_allocations_c += 1;
+       }
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_ADD,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->tdb->tdb_said.spi,
+                                                       extr->tdb->tdb_replaywin,
+                                                       extr->tdb->tdb_state,
+                                                       extr->tdb->tdb_authalg,
+                                                       extr->tdb->tdb_encalg,
+                                                       extr->tdb->tdb_flags),
+                                extensions_reply)
+            /* FIXME: The 3 lifetime extentions should only be sent if
+               non-zero. */
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_CURRENT],
+                                                             SADB_EXT_LIFETIME_CURRENT,
+                                                             extr->tdb->tdb_lifetime_allocations_c,
+                                                             extr->tdb->tdb_lifetime_bytes_c,
+                                                             extr->tdb->tdb_lifetime_addtime_c,
+                                                             extr->tdb->tdb_lifetime_usetime_c),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_HARD],
+                                                             SADB_EXT_LIFETIME_HARD,
+                                                             extr->tdb->tdb_lifetime_allocations_h,
+                                                             extr->tdb->tdb_lifetime_bytes_h,
+                                                             extr->tdb->tdb_lifetime_addtime_h,
+                                                             extr->tdb->tdb_lifetime_usetime_h),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_d),
+                                extensions_reply)
+#if 0
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_ident_data_s ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_SRC],
+                                                                                        SADB_EXT_IDENTITY_SRC,
+                                                                                        SADB_IDENTTYPE_PREFIX,
+                                                                                        0,
+                                                                                        extr->tdb->tdb_ident_data_s),
+                                                              extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_ident_data_d ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_DST],
+                                                                                        SADB_EXT_IDENTITY_DST,
+                                                                                        SADB_IDENTTYPE_PREFIX,
+                                                                                        0,
+                                                                                        extr->tdb->tdb_ident_data_d),
+                                                              extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_sens_ ? pfkey_safe_build(error = pfkey_sens_build(&extensions_reply[SADB_EXT_SENSITIVITY],
+                                                                                extr->tdb->tdb_sens_dpd,
+                                                                                extr->tdb->tdb_sens_sens_level,
+                                                                                extr->tdb->tdb_sens_sens_len,
+                                                                                extr->tdb->tdb_sens_sens_bitmap,
+                                                                                extr->tdb->tdb_sens_integ_level,
+                                                                                extr->tdb->tdb_sens_integ_len,
+                                                                                extr->tdb->tdb_sens_integ_bitmap),
+                                                       extensions_reply) : 1
+#endif
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "failed to build the add reply message extensions\n");
+               goto errlab;
+       }
+               
+       if((error = puttdb(extr->tdb))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "failed to add the mature SA with error=%d.\n",
+                           error);
+               goto errlab;
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_add_parse: successful for SA: %s\n", sa);
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "failed to build the add reply message\n");
+               goto errlab;
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                                   "sending up add reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "sending up add reply message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_delete_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       struct tdb *tdbp;
+       char sa[SATOA_BUF];
+       int error = 0;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_delete_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_delete_parse: "
+                           "extr or extr->tdb pointer NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       satoa(extr->tdb->tdb_said, 0, sa, SATOA_BUF);
+
+       spin_lock_bh(&tdb_lock);
+
+       tdbp = gettdb(&(extr->tdb->tdb_said));
+       if (tdbp == NULL) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_delete_parse: "
+                           "Tunnel Descriptor Block not found for SA:%s, could not delete.\n",
+                           sa);
+               SENDERR(ESRCH);
+       }
+
+       if((error = deltdbchain(tdbp))) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_delete_parse: "
+                           "error=%d returned trying to delete Tunnel Descriptor Block for SA:%s.\n",
+                           error, sa);
+               SENDERR(-error);
+       }
+       spin_unlock_bh(&tdb_lock);
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_DELETE,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->tdb->tdb_said.spi,
+                                                       0,
+                                                       0,
+                                                       0,
+                                                       0,
+                                                       0),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_d),
+                                extensions_reply)
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                           "failed to build the delete reply message extensions\n");
+               goto errlab;
+       }
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                           "failed to build the delete reply message\n");
+               goto errlab;
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                                   "sending up delete reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                           "sending up delete reply message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       ipsec_tdbwipe(extr->tdb);
+
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_get_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct tdb *tdbp;
+       char sa[SATOA_BUF];
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_get_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_get_parse: "
+                           "extr or extr->tdb pointer NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       satoa(extr->tdb->tdb_said, 0, sa, SATOA_BUF);
+
+       spin_lock_bh(&tdb_lock);
+
+       tdbp = gettdb(&(extr->tdb->tdb_said));
+       if (tdbp == NULL) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "Tunnel Descriptor Block not found for SA=%s, could not get.\n",
+                           sa);
+               SENDERR(ESRCH);
+       }
+       
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_GET,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->tdb->tdb_said.spi,
+                                                       extr->tdb->tdb_replaywin,
+                                                       extr->tdb->tdb_state,
+                                                       extr->tdb->tdb_authalg,
+                                                       extr->tdb->tdb_encalg,
+                                                       extr->tdb->tdb_flags),
+                                extensions_reply)
+            /* FIXME: The 3 lifetime extentions should only be sent if
+               non-zero. */
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_CURRENT],
+                                                             SADB_EXT_LIFETIME_CURRENT,
+                                                             tdbp->tdb_lifetime_allocations_c,
+                                                             tdbp->tdb_lifetime_bytes_c,
+                                                             tdbp->tdb_lifetime_addtime_c,
+                                                             tdbp->tdb_lifetime_usetime_c),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_HARD],
+                                                             SADB_EXT_LIFETIME_HARD,
+                                                             tdbp->tdb_lifetime_allocations_h,
+                                                             tdbp->tdb_lifetime_bytes_h,
+                                                             tdbp->tdb_lifetime_addtime_h,
+                                                             tdbp->tdb_lifetime_usetime_h),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_SOFT],
+                                                             SADB_EXT_LIFETIME_SOFT,
+                                                             tdbp->tdb_lifetime_allocations_s,
+                                                             tdbp->tdb_lifetime_bytes_s,
+                                                             tdbp->tdb_lifetime_addtime_s,
+                                                             tdbp->tdb_lifetime_usetime_s),
+                                extensions)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->tdb->tdb_said.proto,*/
+                                                            0,
+                                                            extr->tdb->tdb_addr_d),
+                                extensions_reply)
+            && extr->tdb->tdb_addr_d ? pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_PROXY],
+                                                                                    SADB_EXT_ADDRESS_PROXY,
+                                                                                    0, /*extr->tdb->tdb_said.proto,*/
+                                                                                    0,
+                                                                                    extr->tdb->tdb_addr_p),
+                                                        extensions_reply) : 1
+#if 0
+            /* FIXME: This won't work yet because the keys are not
+               stored directly in the tdb.  They are stored as
+               contexts. */
+            && extr->tdb->tdb_key_a_size ? pfkey_safe_build(error = pfkey_key_build(&extensions_reply[SADB_EXT_KEY_AUTH],
+                                                                                    SADB_EXT_KEY_AUTH,
+                                                                                    extr->tdb->tdb_key_a_size * 8,
+                                                                                    extr->tdb->tdb_key_a),
+                                                            extensions_reply)
+            /* FIXME: This won't work yet because the keys are not
+               stored directly in the tdb.  They are stored as
+               key schedules. */
+            && extr->tdb->tdb_key_e_size ? pfkey_safe_build(error = pfkey_key_build(&extensions_reply[SADB_EXT_KEY_ENCRYPT],
+                                                                                    SADB_EXT_KEY_ENCRYPT,
+                                                                                    extr->tdb->tdb_key_e_size * 8,
+                                                                                    extr->tdb->tdb_key_e),
+                                                            extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_ident_data_s ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_SRC],
+                                                                                        SADB_EXT_IDENTITY_SRC,
+                                                                                        SADB_IDENTTYPE_PREFIX,
+                                                                                        0,
+                                                                                        extr->tdb->tdb_ident_data_s),
+                                                              extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_ident_data_d ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_DST],
+                                                                                        SADB_EXT_IDENTITY_DST,
+                                                                                        SADB_IDENTTYPE_PREFIX,
+                                                                                        0,
+                                                                                        extr->tdb->tdb_ident_data_d),
+                                                              extensions_reply) : 1
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && extr->tdb->tdb_sens_ ? pfkey_safe_build(error = pfkey_sens_build(&extensions_reply[SADB_EXT_SENSITIVITY],
+                                                                                extr->tdb->tdb_sens_dpd,
+                                                                                extr->tdb->tdb_sens_sens_level,
+                                                                                extr->tdb->tdb_sens_sens_len,
+                                                                                extr->tdb->tdb_sens_sens_bitmap,
+                                                                                extr->tdb->tdb_sens_integ_level,
+                                                                                extr->tdb->tdb_sens_integ_len,
+                                                                                extr->tdb->tdb_sens_integ_bitmap),
+                                                       extensions_reply) : 1
+#endif
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "failed to build the get reply message extensions\n");
+               spin_unlock_bh(&tdb_lock);
+               goto errlab;
+       }
+               
+       spin_unlock_bh(&tdb_lock);
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "failed to build the get reply message\n");
+               goto errlab;
+       }
+       
+       if((error = pfkey_upmsg(sk->socket, pfkey_reply))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "failed to send the get reply message\n");
+               goto errlab;
+       }
+       
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                   "succeeded in sending get reply message.\n");
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_acquire_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_acquire_parse: .\n");
+
+       /* I don't know if we want an upper bound, since userspace may
+          want to register itself for an satype > SADB_SATYPE_MAX. */
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_acquire_parse: "
+                           "SATYPE=%d invalid.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(pfkey_registered_sockets[satype])) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire_parse: "
+                           "no sockets registered for SAtype=%d.\n",
+                           satype);
+               SENDERR(EPROTONOSUPPORT);
+       }
+
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp,
+                                       ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire_parse: "
+                                   "sending up acquire reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire_parse: "
+                           "sending up acquire reply message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_register_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       unsigned int alg_num_a = 0, alg_num_e = 0;
+       struct sadb_alg *alg_a = NULL, *alg_e = NULL, *alg_ap = NULL, *alg_ep = NULL;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct supported_list *pfkey_supported_listp;
+       struct socket_list *pfkey_socketsp;
+       int error = 0;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_register_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       /* I don't know if we want an upper bound, since userspace may
+          want to register itself for an satype > SADB_SATYPE_MAX. */
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_parse: "
+                           "SATYPE=%d invalid.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!pfkey_list_insert_socket(sk->socket,
+                                &(pfkey_registered_sockets[satype]))) {
+               KLIPS_PRINT(1 || debug_pfkey,
+                           "klips_debug:pfkey_register_parse: "
+                           "SATYPE=%02d successfully registered by KMd on pid=%d.\n",
+                           satype, key_pid(sk));
+       };
+       
+       /* send up register msg with supported SATYPE algos */
+       pfkey_supported_listp = pfkey_supported_list[satype];
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_register_parse: "
+                   "pfkey_supported_list[%d]=%p\n",
+                   satype,
+                   pfkey_supported_list[satype]);
+       while(pfkey_supported_listp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_parse: "
+                           "checking supported=%p\n",
+                           pfkey_supported_listp);
+               if(pfkey_supported_listp->supportedp->supported_alg_exttype == SADB_EXT_SUPPORTED_AUTH) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_parse: "
+                                   "adding auth alg.\n");
+                       alg_num_a++;
+               }
+               if(pfkey_supported_listp->supportedp->supported_alg_exttype == SADB_EXT_SUPPORTED_ENCRYPT) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_parse: "
+                                   "adding encrypt alg.\n");
+                       alg_num_e++;
+               }
+               pfkey_supported_listp = pfkey_supported_listp->next;
+       }
+       
+       if(alg_num_a) {
+               if((alg_a = kmalloc(alg_num_a * sizeof(struct sadb_alg), GFP_ATOMIC) ) == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_parse: auth alg memory allocation error\n");
+                       SENDERR(ENOMEM);
+               }
+               alg_ap = alg_a;
+       }
+       
+       if(alg_num_e) {
+               if((alg_e = kmalloc(alg_num_e * sizeof(struct sadb_alg), GFP_ATOMIC) ) == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_parse: enc alg memory allocation error\n");
+                       SENDERR(ENOMEM);
+               }
+               alg_ep = alg_e;
+       }
+       
+       pfkey_supported_listp = pfkey_supported_list[satype];
+       while(pfkey_supported_listp) {
+               if(alg_num_a) {
+                       if(pfkey_supported_listp->supportedp->supported_alg_exttype == SADB_EXT_SUPPORTED_AUTH) {
+                               alg_ap->sadb_alg_id = pfkey_supported_listp->supportedp->supported_alg_id;
+                               alg_ap->sadb_alg_ivlen = pfkey_supported_listp->supportedp->supported_alg_ivlen;
+                               alg_ap->sadb_alg_minbits = pfkey_supported_listp->supportedp->supported_alg_minbits;
+                               alg_ap->sadb_alg_maxbits = pfkey_supported_listp->supportedp->supported_alg_maxbits;
+                               alg_ap->sadb_alg_reserved = 0;
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_register_parse: "
+                                           "adding auth=%p\n",
+                                           alg_ap);
+                               alg_ap++;
+                       }
+               }
+               if(alg_num_e) {
+                       if(pfkey_supported_listp->supportedp->supported_alg_exttype == SADB_EXT_SUPPORTED_ENCRYPT) {
+                               alg_ep->sadb_alg_id = pfkey_supported_listp->supportedp->supported_alg_id;
+                               alg_ep->sadb_alg_ivlen = pfkey_supported_listp->supportedp->supported_alg_ivlen;
+                               alg_ep->sadb_alg_minbits = pfkey_supported_listp->supportedp->supported_alg_minbits;
+                               alg_ep->sadb_alg_maxbits = pfkey_supported_listp->supportedp->supported_alg_maxbits;
+                               alg_ep->sadb_alg_reserved = 0;
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_register_parse: "
+                                           "adding encrypt=%p\n",
+                                           alg_ep);
+                               alg_ep++;
+                       }
+               }
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_parse: "
+                           "found satype=%d exttype=%d id=%d ivlen=%d minbits=%d maxbits=%d.\n",
+                           satype,
+                           pfkey_supported_listp->supportedp->supported_alg_exttype,
+                           pfkey_supported_listp->supportedp->supported_alg_id,
+                           pfkey_supported_listp->supportedp->supported_alg_ivlen,
+                           pfkey_supported_listp->supportedp->supported_alg_minbits,
+                           pfkey_supported_listp->supportedp->supported_alg_maxbits);
+               pfkey_supported_listp = pfkey_supported_listp->next;
+       }
+       
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_REGISTER,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply) &&
+            (alg_num_a ? pfkey_safe_build(error = pfkey_supported_build(&extensions_reply[SADB_EXT_SUPPORTED_AUTH],
+                                                                       SADB_EXT_SUPPORTED_AUTH,
+                                                                       alg_num_a,
+                                                                       alg_a),
+                                         extensions_reply) : 1) &&
+            (alg_num_e ? pfkey_safe_build(error = pfkey_supported_build(&extensions_reply[SADB_EXT_SUPPORTED_ENCRYPT],
+                                                                       SADB_EXT_SUPPORTED_ENCRYPT,
+                                                                       alg_num_e,
+                                                                       alg_e),
+                                         extensions_reply) : 1))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_parse: "
+                           "failed to build the register message extensions\n");
+               goto errlab;
+       }
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_parse: "
+                           "failed to build the register message\n");
+               goto errlab;
+       }
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_parse: "
+                                   "sending up register reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_parse: "
+                           "sending up register reply message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_expire_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct socket_list *pfkey_socketsp;
+#ifdef CONFIG_IPSEC_DEBUG
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_expire_parse: .\n");
+
+       if(pfkey_open_sockets) {
+               for(pfkey_socketsp = pfkey_open_sockets;
+                   pfkey_socketsp;
+                   pfkey_socketsp = pfkey_socketsp->next) {
+                       if((error = pfkey_upmsg(pfkey_socketsp->socketp,
+                                               ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])))) {
+                               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire_parse: "
+                                           "sending up expire reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                           satype, pfkey_socketsp->socketp, error);
+                               goto errlab;
+                       }
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire_parse: "
+                                   "sending up expire reply message for satype=%d to socket=%p succeeded.\n",
+                                   satype, pfkey_socketsp->socketp);
+               }
+       }
+
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_flush_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_flush_parse: "
+                   "flushing type %d SAs\n",
+                   satype);
+
+       if ((error = ipsec_tdbcleanup(satype)))
+               SENDERR(-error);
+
+       if(pfkey_open_sockets) {
+               for(pfkey_socketsp = pfkey_open_sockets;
+                   pfkey_socketsp;
+                   pfkey_socketsp = pfkey_socketsp->next) {
+                       if((error = pfkey_upmsg(pfkey_socketsp->socketp,
+                                               ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])))) {
+                               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_flush_parse: "
+                                           "sending up flush reply message for satype=%d to socket=%p failed with error=%d.\n",
+                                           satype,
+                                           pfkey_socketsp->socketp,
+                                           error);
+                               goto errlab;
+                       }
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_flush_parse: "
+                                   "sending up flush reply message for satype=%d to socket=%p succeeded.\n",
+                                   satype,
+                                   pfkey_socketsp->socketp);
+               }
+       }
+
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_dump_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_dump_parse: .\n");
+
+       SENDERR(ENOSYS);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_promisc_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_promisc_parse: .\n");
+
+       SENDERR(ENOSYS);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_pchange_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_pchange_parse: .\n");
+
+       SENDERR(ENOSYS);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_grpsa_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       struct tdb *tdb1p, *tdb2p, *tdbp;
+       char sa1[SATOA_BUF], sa2[SATOA_BUF];
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_grpsa_parse: .\n");
+
+       spin_lock_bh(&tdb_lock);
+
+       if(!extr || !extr->tdb) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_grpsa_parse: "
+                           "extr or extr->tdb is NULL, fatal.\n");
+               SENDERR(EINVAL);
+       }
+
+       satoa(extr->tdb->tdb_said, 0, sa1, SATOA_BUF);
+       if(extr->tdb2) {
+               satoa(extr->tdb2->tdb_said, 0, sa2, SATOA_BUF);
+       }
+
+       if(!(tdb1p = gettdb(&(extr->tdb->tdb_said)))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug: pfkey_x_grpsa_parse: reserved Tunnel Descriptor Block\n"
+                           "klips_debug:            for SA: %s not found.  Call SADB_ADD/UPDATE first.\n", sa1);
+               SENDERR(EEXIST);
+       }
+       if(extr->tdb2) { /* GRPSA */
+               if(!(tdb2p = gettdb(&(extr->tdb2->tdb_said)))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug: pfkey_x_grpsa_parse: reserved Tunnel Descriptor Block\n"
+                                   "klips_debug:            for SA: %s not found.  Call SADB_ADD/UPDATE first.\n", sa2);
+                       SENDERR(EEXIST);
+               }
+
+               /* Is either one already linked? */
+               if(tdb1p->tdb_onext) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug: pfkey_x_grpsa_parse: Tunnel Descriptor Block\n"
+                                   "klips_debug:                for SA: %s is already linked.\n", sa1);
+                       SENDERR(EEXIST);
+               }
+               if(tdb2p->tdb_inext) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug: pfkey_x_grpsa_parse: Tunnel Descriptor Block\n"
+                                   "klips_debug:                for SA: %s is already linked.\n", sa2);
+                       SENDERR(EEXIST);
+               }
+               
+               /* Is extr->tdb already linked to extr->tdb2? */
+               tdbp = tdb2p;
+               while(tdbp) {
+                       if(tdbp == tdb1p) {
+                               SENDERR(EEXIST);
+                       }
+                       tdbp = tdb2p->tdb_onext;
+               }
+               
+               /* link 'em */
+               tdb1p->tdb_onext = tdb2p;
+               tdb2p->tdb_inext = tdb1p;
+       } else { /* UNGRPSA */
+               while(tdb1p->tdb_onext) {
+                       tdb1p = tdb1p->tdb_onext;
+               }
+               while(tdb1p->tdb_inext) {
+                       tdbp = tdb1p;
+                       tdb1p = tdb1p->tdb_inext;
+                       tdbp->tdb_inext = NULL;
+                       tdb1p->tdb_onext = NULL;
+               }
+       }
+
+ errlab:
+       spin_unlock_bh(&tdb_lock);
+
+       ipsec_tdbwipe(extr->tdb);
+       if(extr->tdb2) {
+               ipsec_tdbwipe(extr->tdb2);
+       }
+
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_addflow_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+#ifdef CONFIG_IPSEC_DEBUG
+       char buf1[64], buf2[64];
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: .\n");
+
+       if(!extr || !(extr->tdb) || !(extr->eroute)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "missing extr, tdb or eroute data.\n");
+               SENDERR(EINVAL);
+       }
+
+#ifdef CONFIG_IPSEC_DEBUG
+       if (debug_pfkey) {
+               subnettoa(extr->eroute->er_eaddr.sen_ip_src,
+                         extr->eroute->er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(extr->eroute->er_eaddr.sen_ip_dst,
+                         extr->eroute->er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "calling breakeroute and/or makeroute for %s->%s\n",
+                           buf1, buf2);
+       }
+#endif /* CONFIG_IPSEC_DEBUG */
+       if(extr->tdb->tdb_flags & SADB_X_SAFLAGS_REPLACEFLOW) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "REPLACEFLOW flag set, calling breakeroute.\n");
+               if ((error = ipsec_breakroute(&(extr->eroute->er_eaddr),
+                                             &(extr->eroute->er_emask))) == EINVAL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "breakeroute returned %d.\n", error);
+                       SENDERR(-error);
+               }
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: "
+                   "calling makeroute.\n");
+
+       if ((error = ipsec_makeroute(&(extr->eroute->er_eaddr),
+                                    &(extr->eroute->er_emask),
+                                    extr->tdb->tdb_said))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "makeroute returned %d.\n", error);
+               SENDERR(-error);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: "
+                   "makeroute call successful.\n");
+
+       ipsec_tdbwipe(extr->tdb);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: "
+                   "extr->tdb cleaned up and freed.\n");
+
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_delflow_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+#ifdef CONFIG_IPSEC_DEBUG
+       char buf1[64], buf2[64];
+#endif /* CONFIG_IPSEC_DEBUG */
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_delflow_parse: .\n");
+
+       if(!extr || !(extr->tdb)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_delflow_parse: "
+                           "extr, or extr->tdb is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       if(extr->tdb->tdb_flags & SADB_X_SAFLAGS_CLEARFLOW) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_delflow_parse: "
+                           "CLEARFLOW flag set, calling cleareroutes.\n");
+               if ((error = ipsec_cleareroutes()))
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "cleareroutes returned %d.\n", error);
+                       SENDERR(-error);
+       } else {
+               if(!(extr->eroute)) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "extr->eroute is NULL, fatal.\n");
+                       SENDERR(EINVAL);
+               }
+               
+#ifdef CONFIG_IPSEC_DEBUG
+               if (debug_pfkey) {
+                       subnettoa(extr->eroute->er_eaddr.sen_ip_src,
+                                 extr->eroute->er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+                       subnettoa(extr->eroute->er_eaddr.sen_ip_dst,
+                                 extr->eroute->er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "calling breakeroute for %s->%s\n",
+                                   buf1, buf2);
+               }
+#endif /* CONFIG_IPSEC_DEBUG */
+               if((error = ipsec_breakroute(&(extr->eroute->er_eaddr),
+                                            &(extr->eroute->er_emask)))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "breakeroute returned %d.\n", error);
+                       SENDERR(-error);
+               }
+       }
+       
+       ipsec_tdbwipe(extr->tdb);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_delflow_parse: "
+                   "extr->tdb cleaned up and freed.\n");
+
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_msg_debug_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_msg_debug_parse: .\n");
+
+/* errlab:*/
+       return error;
+}
+
+
+int
+pfkey_expire(struct tdb *tdbp, int hard)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_msg = NULL;
+       struct socket_list *pfkey_socketsp;
+       int error = 0;
+       uint8_t satype = proto2satype(tdbp->tdb_said.proto);
+
+       pfkey_extensions_init(extensions);
+
+       if(!pfkey_open_sockets) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                           "no sockets listening.\n");
+               SENDERR(EPROTONOSUPPORT);
+       }
+
+       spin_lock(&tdb_lock);
+       if (!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions[0],
+                                                          SADB_EXPIRE,
+                                                          satype,
+                                                          0,
+                                                          ++pfkey_msg_seq,
+                                                          0),
+                              extensions)
+             && pfkey_safe_build(error = pfkey_sa_build(&extensions[SADB_EXT_SA],
+                                                        SADB_EXT_SA,
+                                                        tdbp->tdb_said.spi,
+                                                        tdbp->tdb_replaywin,
+                                                        tdbp->tdb_state,
+                                                        tdbp->tdb_authalg,
+                                                        tdbp->tdb_encalg,
+                                                        tdbp->tdb_flags),
+                                 extensions)
+             && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_CURRENT],
+                                                              SADB_EXT_LIFETIME_CURRENT,
+                                                              tdbp->tdb_lifetime_allocations_c,
+                                                              tdbp->tdb_lifetime_bytes_c,
+                                                              tdbp->tdb_lifetime_addtime_c,
+                                                              tdbp->tdb_lifetime_usetime_c),
+                                 extensions)
+             && (hard ? 
+                 pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_HARD],
+                                                               SADB_EXT_LIFETIME_HARD,
+                                                               tdbp->tdb_lifetime_allocations_h,
+                                                               tdbp->tdb_lifetime_bytes_h,
+                                                               tdbp->tdb_lifetime_addtime_h,
+                                                               tdbp->tdb_lifetime_usetime_h),
+                                  extensions)
+                 : pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_SOFT],
+                                                                 SADB_EXT_LIFETIME_SOFT,
+                                                                 tdbp->tdb_lifetime_allocations_s,
+                                                                 tdbp->tdb_lifetime_bytes_s,
+                                                                 tdbp->tdb_lifetime_addtime_s,
+                                                                 tdbp->tdb_lifetime_usetime_s),
+                                    extensions))
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                                                             SADB_EXT_ADDRESS_SRC,
+                                                             0, /* tdbp->tdb_said.proto, */
+                                                             0,
+                                                             tdbp->tdb_addr_s),
+                                 extensions)
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                                                             SADB_EXT_ADDRESS_DST,
+                                                             0, /* tdbp->tdb_said.proto, */
+                                                             0,
+                                                             tdbp->tdb_addr_d),
+                                 extensions))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: failed to "
+                           "build the expire message extensions\n");
+               spin_unlock(&tdb_lock);
+               goto errlab;
+       }
+       
+       spin_unlock(&tdb_lock);
+
+       if ((error = pfkey_msg_build(&pfkey_msg, extensions, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: failed to "
+                           "build the expire message\n");
+               goto errlab;
+       }
+       
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_msg))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                                   "sending up expire message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                           "sending up expire message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_msg) {
+               pfkey_msg_free(&pfkey_msg);
+       }
+       pfkey_extensions_free(extensions);
+       return error;
+}
+
+int
+pfkey_acquire(struct tdb *tdbp)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_msg = NULL;
+       struct socket_list *pfkey_socketsp;
+       int error = 0;
+       struct sadb_comb comb[] = {
+               /* auth; encrypt; flags; */
+               /* auth_minbits; auth_maxbits; encrypt_minbits; encrypt_maxbits; */
+               /* reserved; soft_allocations; hard_allocations; soft_bytes; hard_bytes; */
+               /* soft_addtime; hard_addtime; soft_usetime; hard_usetime; */
+               { SADB_AALG_MD5HMAC,  SADB_EALG_3DESCBC, SADB_SAFLAGS_PFS,
+                 128, 128, 168, 168,
+                 0, 0, 0, 0, 0,
+                 57600, 86400, 57600, 86400 },
+               { SADB_AALG_SHA1HMAC, SADB_EALG_3DESCBC, SADB_SAFLAGS_PFS,
+                 160, 160, 168, 168,
+                 0, 0, 0, 0, 0,
+                 57600, 86400, 57600, 86400 }
+       };
+       
+       /* This should not be hard-coded.  It should be taken from the spdb */
+       uint8_t satype = SADB_SATYPE_ESP;
+
+       pfkey_extensions_init(extensions);
+
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "SAtype=%d unspecified or unknown.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(pfkey_registered_sockets[satype])) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "no sockets registered for SAtype=%d.\n",
+                           satype);
+               SENDERR(EPROTONOSUPPORT);
+       }
+       
+       if (!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions[0],
+                                                         SADB_ACQUIRE,
+                                                         satype,
+                                                         0,
+                                                         ++pfkey_msg_seq,
+                                                         0),
+                             extensions)
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                                                             SADB_EXT_ADDRESS_SRC,
+                                                             tdbp->tdb_said.proto,
+                                                             0,
+                                                             tdbp->tdb_addr_s),
+                                 extensions)
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                                                             SADB_EXT_ADDRESS_DST,
+                                                             tdbp->tdb_said.proto,
+                                                             0,
+                                                             tdbp->tdb_addr_d),
+                                 extensions)
+#if 0
+             && tdbp->tdb_addr_p ? pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_PROXY],
+                                                                                SADB_EXT_ADDRESS_PROXY,
+                                                                                tdbp->tdb_said.proto,
+                                                                                0,
+                                                                                tdbp->tdb_addr_p),
+                                                    extensions) : 1
+             /* FIXME: This won't work yet because I have not finished
+                it. */
+             && tdbp->tdb_ident_data_s ? pfkey_safe_build(error = pfkey_ident_build(&extensions[SADB_EXT_IDENTITY_SRC],
+                                                                                         SADB_EXT_IDENTITY_SRC,
+                                                                                         SADB_IDENTTYPE_PREFIX,
+                                                                                         0,
+                                                                                         tdbp->tdb_ident_data_s),
+                                                               extensions) : 1
+             /* FIXME: This won't work yet because I have not finished
+                it. */
+             && tdbp->tdb_ident_data_d ? pfkey_safe_build(error = pfkey_ident_build(&extensions[SADB_EXT_IDENTITY_DST],
+                                                                                         SADB_EXT_IDENTITY_DST,
+                                                                                         SADB_IDENTTYPE_PREFIX,
+                                                                                         0,
+                                                                                         tdbp->tdb_ident_data_d),
+                                                               extensions) : 1
+             /* FIXME: This won't work yet because I have not finished
+                it. */
+             && tdbp->tdb_sens_ ? pfkey_safe_build(error = pfkey_sens_build(&extensions[SADB_EXT_SENSITIVITY],
+                                                                                 tdbp->tdb_sens_dpd,
+                                                                                 tdbp->tdb_sens_sens_level,
+                                                                                 tdbp->tdb_sens_sens_len,
+                                                                                 tdbp->tdb_sens_sens_bitmap,
+                                                                                 tdbp->tdb_sens_integ_level,
+                                                                                 tdbp->tdb_sens_integ_len,
+                                                                                 tdbp->tdb_sens_integ_bitmap),
+                                                        extensions) : 1
+#endif
+             && pfkey_safe_build(error = pfkey_prop_build(&extensions[SADB_EXT_PROPOSAL],
+                                                          64, /* replay */
+                                                          sizeof(comb)/sizeof(struct sadb_comb),
+                                                          &(comb[0])),
+                                 extensions)
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: failed to "
+                           "build the acquire message extensions\n");
+               goto errlab;
+       }
+       
+       if ((error = pfkey_msg_build(&pfkey_msg, extensions, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: failed to "
+                           "build the acquire message\n");
+               goto errlab;
+       }
+       
+       /* this should go to all registered sockets for that satype only */
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_msg))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: "
+                                   "sending up acquire message for satype=%d to socket=%p failed with error=%d.\n",
+                                   satype, pfkey_socketsp->socketp, error);
+                       goto errlab;
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "sending up acquire message for satype=%d to socket=%p succeeded.\n",
+                           satype, pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_msg) {
+               pfkey_msg_free(&pfkey_msg);
+       }
+       pfkey_extensions_free(extensions);
+       return error;
+}
+
+
+DEBUG_NO_STATIC int (*ext_processors[SADB_EXT_MAX+1])(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr) =
+{
+  NULL, /* pfkey_msg_process, */
+        pfkey_sa_process,
+        pfkey_lifetime_process,
+        pfkey_lifetime_process,
+        pfkey_lifetime_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_key_process,
+        pfkey_key_process,
+        pfkey_ident_process,
+        pfkey_ident_process,
+        pfkey_sens_process,
+        pfkey_prop_process,
+        pfkey_supported_process,
+        pfkey_supported_process,
+        pfkey_spirange_process,
+        pfkey_x_kmprivate_process,
+        pfkey_x_satype_process,
+        pfkey_sa_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+       pfkey_x_debug_process
+};
+
+
+DEBUG_NO_STATIC int (*msg_parsers[SADB_MAX +1])(struct sock *sk, struct sadb_ext *extensions[], struct pfkey_extracted_data* extr)
+ =
+{
+       NULL, /* RESERVED */
+       pfkey_getspi_parse,
+       pfkey_update_parse,
+       pfkey_add_parse,
+       pfkey_delete_parse,
+       pfkey_get_parse,
+       pfkey_acquire_parse,
+       pfkey_register_parse,
+       pfkey_expire_parse,
+       pfkey_flush_parse,
+       pfkey_dump_parse,
+       pfkey_x_promisc_parse,
+       pfkey_x_pchange_parse,
+       pfkey_x_grpsa_parse,
+       pfkey_x_addflow_parse,
+       pfkey_x_delflow_parse,
+       pfkey_x_msg_debug_parse
+};
+
+int
+pfkey_build_reply(struct sadb_msg *pfkey_msg, struct pfkey_extracted_data *extr,
+                               struct sadb_msg **pfkey_reply)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       int error = 0;
+       int msg_type = pfkey_msg->sadb_msg_type;
+       int seq = pfkey_msg->sadb_msg_seq;
+
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: building reply"
+                                       " with type: %d\n", msg_type);
+       pfkey_extensions_init(extensions);
+       if (!extr || !extr->tdb) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: bad TDB"
+                                                       "passed\n");
+                       return EINVAL;
+       }
+       error = pfkey_safe_build(pfkey_msg_hdr_build(&extensions[0],
+                                                    msg_type,
+                                                    proto2satype(extr->tdb->tdb_said.proto),
+                                                    0,
+                                                    seq,
+                                                    pfkey_msg->sadb_msg_pid),
+                                extensions) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_SA)
+                || pfkey_safe_build(pfkey_sa_build(&extensions[SADB_EXT_SA],
+                                                   SADB_EXT_SA,
+                                                   extr->tdb->tdb_said.spi,
+                                                   extr->tdb->tdb_replaywin,
+                                                   extr->tdb->tdb_state,
+                                                   extr->tdb->tdb_authalg,
+                                                   extr->tdb->tdb_encalg,
+                                                   extr->tdb->tdb_flags),
+                                    extensions)) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_LIFETIME_CURRENT)
+                || pfkey_safe_build(pfkey_lifetime_build(&extensions
+                                                         [SADB_EXT_LIFETIME_CURRENT],
+                                                         SADB_EXT_LIFETIME_CURRENT,
+                                                         extr->tdb->tdb_lifetime_allocations_c,
+                                                         extr->tdb->tdb_lifetime_bytes_c,
+                                                         extr->tdb->tdb_lifetime_addtime_c,
+                                                         extr->tdb->tdb_lifetime_usetime_c),
+                                    extensions)) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_ADDRESS_SRC)
+                || pfkey_safe_build(pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                                                        SADB_EXT_ADDRESS_SRC,
+                                                        extr->tdb->tdb_said.proto,
+                                                        0,
+                                                        extr->tdb->tdb_addr_s),
+                                    extensions)) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_ADDRESS_DST)
+                || pfkey_safe_build(pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                                                        SADB_EXT_ADDRESS_DST,
+                                                        extr->tdb->tdb_said.proto,
+                                                        0,
+                                                        extr->tdb->tdb_addr_d),
+                                    extensions));
+
+       if (error == 0) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: "
+                           "building extensions failed\n");
+               return EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: built extensions"
+                   ", proceed to build the message\n");
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: extensions[1]="
+                   " %p\n", extensions[1]);
+       error = pfkey_msg_build(pfkey_reply, extensions, EXT_BITS_OUT);
+       pfkey_extensions_free(extensions);
+
+       return error;
+}
+
+int
+pfkey_msg_interp(struct sock *sk, struct sadb_msg *pfkey_msg,
+                               struct sadb_msg **pfkey_reply)
+{
+       int error = 0;
+       int i;
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct pfkey_extracted_data extr = {NULL, NULL, NULL};
+       
+       pfkey_extensions_init(extensions);
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_msg_interp: parsing message "
+                   "ver=%d, type=%d, errno=%d, satype=%d, len=%d, res=%d, seq=%d, pid=%d.\n", 
+                   pfkey_msg->sadb_msg_version,
+                   pfkey_msg->sadb_msg_type,
+                   pfkey_msg->sadb_msg_errno,
+                   pfkey_msg->sadb_msg_satype,
+                   pfkey_msg->sadb_msg_len,
+                   pfkey_msg->sadb_msg_reserved,
+                   pfkey_msg->sadb_msg_seq,
+                   pfkey_msg->sadb_msg_pid);
+       
+       if((error = pfkey_alloc_tdb(&(extr.tdb)))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: "
+                           "something's really wrong, extr.tdb=%p should be NULL.\n", extr.tdb);
+               SENDERR(-error);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_msg_interp: "
+                   "allocated extr->tdb=%p.\n", extr.tdb);
+       
+       if(pfkey_msg->sadb_msg_satype > SADB_SATYPE_MAX) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: satype %d > max %d\n", 
+                           pfkey_msg->sadb_msg_satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_msg->sadb_msg_type) {
+       case SADB_GETSPI:
+       case SADB_UPDATE:
+       case SADB_ADD:
+       case SADB_DELETE:
+       case SADB_X_GRPSA:
+               if(!(extr.tdb->tdb_said.proto = satype2proto(pfkey_msg->sadb_msg_satype))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_msg_interp: satype %d lookup failed.\n", 
+                                   pfkey_msg->sadb_msg_satype);
+                       SENDERR(EINVAL);
+               }
+               break;
+       case SADB_X_ADDFLOW:
+               extr.tdb->tdb_said.proto = satype2proto(pfkey_msg->sadb_msg_satype);
+               break;
+       default:
+       }
+       
+       /* The NULL below causes the default extension parsers to be used */
+       /* Parse the extensions */
+       if((error = pfkey_msg_parse(pfkey_msg, NULL, extensions, EXT_BITS_IN)))
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: message parsing failed with error %d.\n",
+                           error); 
+               SENDERR(-error);
+       }
+       
+       /* Process the extensions */
+       for(i=1; i <= SADB_EXT_MAX;i++) {
+               if(extensions[i] != NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_msg_interp: "
+                                   "processing ext %d %p with processor %p.\n", 
+                                   i, extensions[i], ext_processors[i]);
+                       if((error = ext_processors[i](extensions[i], &extr))) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_msg_interp: extension processing for type %d failed with error %d.\n",
+                                           i,error); 
+                               SENDERR(-error);
+                       }
+                       
+               }
+               
+       }
+       
+       /* Parse the message types */
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_msg_interp: "
+                   "parsing message type %d with msg_parser %p.\n",
+                   pfkey_msg->sadb_msg_type,
+                   msg_parsers[pfkey_msg->sadb_msg_type]); 
+       if((error = msg_parsers[pfkey_msg->sadb_msg_type](sk, extensions, &extr))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: message parsing failed with error %d.\n",
+                           error); 
+               SENDERR(-error);
+       }
+
+#if 0
+       error = pfkey_build_reply(pfkey_msg, &extr, pfkey_reply);
+       if (error) {
+               *pfkey_reply = NULL;
+       }
+#endif 
+ errlab:
+       return(error);
+}
+
+/*
+ * $Log$
+ * Revision 1.62  2000/11/30 21:47:51  rgb
+ * Fix error return bug after returning from pfkey_tdb_init().
+ *
+ * Revision 1.61  2000/11/17 18:10:29  rgb
+ * Fixed bugs mostly relating to spirange, to treat all spi variables as
+ * network byte order since this is the way PF_KEYv2 stored spis.
+ *
+ * Revision 1.60  2000/11/06 04:34:53  rgb
+ * Changed non-exported functions to DEBUG_NO_STATIC.
+ * Add Svenning's adaptive content compression.
+ * Ditched spin_lock_irqsave in favour of spin_lock/_bh.
+ * Fixed double unlock bug (Svenning).
+ * Fixed pfkey_msg uninitialized bug in pfkey_{expire,acquire}().
+ * Fixed incorrect extension type (prop) in pfkey)acquire().
+ *
+ * Revision 1.59  2000/10/11 15:25:12  rgb
+ * Fixed IPCOMP disabled compile bug.
+ *
+ * Revision 1.58  2000/10/11 14:54:03  rgb
+ * Fixed pfkey_acquire() satype to SADB_SATYPE_ESP and removed pfkey
+ * protocol violations of setting pfkey_address_build() protocol parameter
+ * to non-zero except in the case of pfkey_acquire().
+ *
+ * Revision 1.57  2000/10/10 20:10:18  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.56  2000/10/06 20:24:36  rgb
+ * Fixes to pfkey_acquire to initialize extensions[] and use correct
+ * ipproto.
+ *
+ * Revision 1.55  2000/10/03 03:20:57  rgb
+ * Added brackets to get a?b:c scope right for pfkey_register reply.
+ *
+ * Revision 1.54  2000/09/29 19:49:30  rgb
+ * As-yet-unused-bits cleanup.
+ *
+ * Revision 1.53  2000/09/28 00:35:45  rgb
+ * Padded SATYPE printout in pfkey_register for vertical alignment.
+ *
+ * Revision 1.52  2000/09/20 16:21:58  rgb
+ * Cleaned up ident string alloc/free.
+ *
+ * Revision 1.51  2000/09/20 04:04:20  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names in
+ * oopsen.
+ *
+ * Revision 1.50  2000/09/16 01:10:53  rgb
+ * Fixed unused var warning with debug off.
+ *
+ * Revision 1.49  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.48  2000/09/15 04:57:57  rgb
+ * Cleaned up existing IPCOMP code before svenning addition.
+ * Initialize pfkey_reply and extensions_reply in case of early error in
+ * message parsing functions (thanks Kai!).
+ *
+ * Revision 1.47  2000/09/13 08:02:56  rgb
+ * Added KMd registration notification.
+ *
+ * Revision 1.46  2000/09/12 22:35:36  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.45  2000/09/12 03:24:23  rgb
+ * Converted #if0 debugs to sysctl.
+ *
+ * Revision 1.44  2000/09/09 06:38:39  rgb
+ * Correct SADB message type for update, add and delete.
+ *
+ * Revision 1.43  2000/09/08 19:19:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ * Put in sanity checks in most msg type parsers to catch invalid satypes
+ * and empty socket lists.
+ * Moved spin-locks in pfkey_get_parse() to simplify.
+ * Added pfkey_acquire().
+ * Added upwards messages to update, add, delete, acquire_parse,
+ * expire_parse and flush.
+ * Fix pfkey_prop_build() parameter to be only single indirection.
+ * Changed all replies to use pfkey_reply.
+ * Check return code on puttdb() and deltdbchain() in getspi, update,
+ * add, delete.
+ * Fixed up all pfkey replies to open and registered sockets.
+ *
+ * Revision 1.42  2000/09/01 18:50:26  rgb
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ * Only send pfkey_expire() messages to sockets registered for that satype.
+ * Added reply to pfkey_getspi_parse().
+ * Added reply to pfkey_get_parse().
+ * Fixed debug output label bug in pfkey_lifetime_process().
+ * Cleaned up pfkey_sa_process a little.
+ * Moved pfkey_safe_build() above message type parsers to make it available
+ * for creating replies.
+ * Added comments for future work in pfkey_acquire_parse().
+ * Fleshed out guts of pfkey_register_parse().
+ *
+ * Revision 1.41  2000/08/24 16:58:11  rgb
+ * Fixed key debugging variables.
+ * Fixed error return code for a failed search.
+ * Changed order of pfkey_get operations.
+ *
+ * Revision 1.40  2000/08/21 16:32:27  rgb
+ * Re-formatted for cosmetic consistency and readability.
+ *
+ * Revision 1.39  2000/08/20 21:38:57  rgb
+ * Bugfixes to as-yet-unused pfkey_update_parse() and
+ * pfkey_register_parse(). (Momchil)
+ * Added functions pfkey_safe_build(), pfkey_expire() and
+ * pfkey_build_reply(). (Momchil)
+ * Added a pfkey_reply parameter to pfkey_msg_interp(). (Momchil)
+ *
+ * Revision 1.38  2000/08/18 21:30:41  rgb
+ * Purged all tdb_spi, tdb_proto and tdb_dst macros.  They are unclear.
+ *
+ * Revision 1.37  2000/08/18 18:18:02  rgb
+ * Cosmetic and descriptive changes made to debug test.
+ * getspi and update fixes from Momchil.
+ *
+ * Revision 1.36  2000/08/15 15:41:55  rgb
+ * Fixed the (as yet unused and untested) pfkey_getspi() routine.
+ *
+ * Revision 1.35  2000/08/01 14:51:52  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.34  2000/07/28 14:58:32  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.33  2000/06/28 05:50:11  rgb
+ * Actually set iv_bits.
+ *
+ * Revision 1.32  2000/05/30 18:36:56  rgb
+ * Fix AH auth hash setup bug.  This breaks interop with previous PF_KEY
+ * FreeS/WAN, but fixes interop with other implementations.
+ *
+ * Revision 1.31  2000/03/16 14:05:48  rgb
+ * Fixed brace scope preventing non-debug compile.
+ * Added null parameter check for pfkey_x_debug().
+ *
+ * Revision 1.30  2000/01/22 23:21:13  rgb
+ * Use new function satype2proto().
+ *
+ * Revision 1.29  2000/01/22 08:40:21  rgb
+ * Invert condition to known value to avoid AF_INET6 in 2.0.36.
+ *
+ * Revision 1.28  2000/01/22 07:58:57  rgb
+ * Fixed REPLACEFLOW bug, missing braces around KLIPS_PRINT *and* SENDERR.
+ *
+ * Revision 1.27  2000/01/22 03:48:01  rgb
+ * Added extr pointer component debugging.
+ *
+ * Revision 1.26  2000/01/21 09:41:25  rgb
+ * Changed a (void*) to (char*) cast to do proper pointer math.
+ * Don't call tdbwipe if tdb2 is NULL.
+ *
+ * Revision 1.25  2000/01/21 06:21:01  rgb
+ * Added address cases for eroute flows.
+ * Tidied up compiler directive indentation for readability.
+ * Added ictx,octx vars for simplification.
+ * Added macros for HMAC padding magic numbers.
+ * Converted from double tdb arguments to one structure (extr)
+ * containing pointers to all temporary information structures
+ * and checking for valid arguments to all ext processors and
+ * msg type parsers.
+ * Added spiungrp'ing.
+ * Added klipsdebug switching capability.
+ * Removed sa_process() check for zero protocol.
+ * Added address case for DST2 for grouping.
+ * Added/changed minor debugging instrumentation.
+ * Fixed spigrp for single said, ungrouping case.
+ * Added code to parse addflow and delflow messages.
+ * Removed redundant statements duplicating tdbwipe() functionality
+ * and causing double kfrees.
+ * Permit addflow to have a protocol of 0.
+ *
+ * Revision 1.24  1999/12/09 23:23:00  rgb
+ * Added check to pfkey_sa_process() to do eroutes.
+ * Converted to DIVUP() macro.
+ * Converted if() to switch() in pfkey_register_parse().
+ * Use new pfkey_extensions_init() instead of memset().
+ *
+ * Revision 1.23  1999/12/01 22:18:13  rgb
+ * Preset minspi and maxspi values in case and spirange extension is not
+ * included and check for the presence of an spirange extension before
+ * using it.  Initialise tdb_sastate to LARVAL.
+ * Fixed debugging output typo.
+ * Fixed authentication context initialisation bugs (4 places).
+ *
+ * Revision 1.22  1999/11/27 11:53:08  rgb
+ * Moved pfkey_msg_parse prototype to pfkey.h
+ * Moved exts_permitted/required prototype to pfkey.h.
+ * Moved sadb_satype2proto protocol lookup table to lib/pfkey_v2_parse.c.
+ * Deleted SADB_X_EXT_SA2 code from pfkey_sa_process() since it will never
+ * be called.
+ * Moved protocol/algorithm checks to lib/pfkey_v2_parse.c
+ * Debugging error messages added.
+ * Enable lifetime_current checking.
+ * Remove illegal requirement for SA extension to be present in an
+ * originating GETSPI call.
+ * Re-instate requirement for UPDATE or ADD message to be MATURE.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Fixed IPIP dst address bug and purged redundant, leaky code.
+ *
+ * Revision 1.21  1999/11/24 05:24:20  rgb
+ * hanged 'void*extensions' to 'struct sadb_ext*extensions'.
+ * Fixed indention.
+ * Ditched redundant replay check.
+ * Fixed debug message text from 'parse' to 'process'.
+ * Added more debug output.
+ * Forgot to zero extensions array causing bug, fixed.
+ *
+ * Revision 1.20  1999/11/23 23:08:13  rgb
+ * Move all common parsing code to lib/pfkey_v2_parse.c and rename
+ * remaining bits to *_process. (PJO)
+ * Add macros for dealing with alignment and rounding up more opaquely.
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ * Corrected a couple of bugs in as-yet-inactive code.
+ *
+ * Revision 1.19  1999/11/20 22:01:10  rgb
+ * Add more descriptive error messages for non-zero reserved fields.
+ * Add more descriptive error message for spirange parsing.
+ * Start on supported extension parsing.
+ * Start on register and get message parsing.
+ *
+ * Revision 1.18  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.17  1999/11/17 15:53:41  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.16  1999/10/26 16:57:43  rgb
+ * Add shorter macros for compiler directives to visually clean-up.
+ * Give ipv6 code meaningful compiler directive.
+ * Add comments to other #if 0 debug code.
+ * Remove unused *_bh_atomic() calls.
+ * Fix mis-placed spinlock.
+ *
+ * Revision 1.15  1999/10/16 18:27:10  rgb
+ * Clean-up unused cruft.
+ * Fix-up lifetime_allocations_c and lifetime_addtime_c initialisations.
+ *
+ * Revision 1.14  1999/10/08 18:37:34  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.13  1999/10/03 18:49:12  rgb
+ * Spinlock fixes for 2.0.xx and 2.3.xx.
+ *
+ * Revision 1.12  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.11  1999/10/01 00:05:45  rgb
+ * Added tdb structure locking.
+ * Use 'jiffies' instead of do_get_timeofday().
+ * Fix lifetime assignments.
+ *
+ * Revision 1.10  1999/09/21 15:24:45  rgb
+ * Rework spirange code to save entropy and prevent endless loops.
+ *
+ * Revision 1.9  1999/09/16 12:10:21  rgb
+ * Minor fixes to random spi selection for correctness and entropy conservation.
+ *
+ * Revision 1.8  1999/05/25 22:54:46  rgb
+ * Fix comparison that should be an assignment in an if.
+ *
+ * Revision 1.7  1999/05/09 03:25:37  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.6  1999/05/08 21:32:30  rgb
+ * Fix error return reporting.
+ *
+ * Revision 1.5  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.4  1999/04/29 15:22:40  rgb
+ * Standardise an error return method.
+ * Add debugging instrumentation.
+ * Add check for existence of macros min/max.
+ * Add extensions permitted/required in/out filters.
+ * Add satype-to-protocol table.
+ * Add a second tdb pointer to each parser to accomodate GRPSA.
+ * Move AH & no_algo_set to GETSPI, UPDATE and ADD.
+ * Add OOO window check.
+ * Add support for IPPROTO_IPIP and hooks for IPPROTO_COMP.
+ * Add timestamp to lifetime parse.
+ * Fix address structure length checking bug.
+ * Fix address structure allocation bug (forgot to kmalloc!).
+ * Add checks for extension lengths.
+ * Add checks for extension reserved illegal values.
+ * Add check for spirange legal values.
+ * Add an extension type for parsing a second satype, SA and
+ * DST_ADDRESS.
+ * Make changes to tdb_init() template to get pfkey_tdb_init(),
+ * eliminating any mention of xformsw.
+ * Implement getspi, update and grpsa (not tested).
+ * Add stubs for as yet unimplemented message types.
+ * Add table of message parsers to substitute for msg_parse switch.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ * Revision 1.2  1999/04/15 15:37:26  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.1.2.1  1999/03/26 20:58:56  rgb
+ * Add pfkeyv2 support to KLIPS.
+ *
+ */
diff -druN linux-noipsec/net/ipsec/radij.c linux/net/ipsec/radij.c
--- linux-noipsec/net/ipsec/radij.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/radij.c     Mon Nov  6 05:35:21 2000
@@ -0,0 +1,1113 @@
+char radij_c_version[] = "RCSID $Id$";
+
+/*
+ * This file is defived from ${SRC}/sys/net/radix.c of BSD 4.4lite
+ *
+ * Variable and procedure names have been modified so that they don't
+ * conflict with the original BSD code, as a small number of modifications
+ * have been introduced and we may want to reuse this code in BSD.
+ * 
+ * The `j' in `radij' is pronounced as a voiceless guttural (like a Greek
+ * chi or a German ch sound (as `doch', not as in `milch'), or even a 
+ * spanish j as in Juan.  It is not as far back in the throat like
+ * the corresponding Hebrew sound, nor is it a soft breath like the English h.
+ * It has nothing to do with the Dutch ij sound.
+ * 
+ * Here is the appropriate copyright notice:
+ */
+
+/*
+ * Copyright (c) 1988, 1989, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)radix.c     8.2 (Berkeley) 1/4/94
+ */
+
+/*
+ * Routines to build and maintain radix trees for routing lookups.
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/malloc.h> /* kmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#ifdef NET_21
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#endif /* NET_21 */
+#include <asm/checksum.h>
+#include <net/ip.h>
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+#include "ipsec_netlink.h"
+
+int    maj_keylen;
+struct radij_mask *rj_mkfreelist;
+struct radij_node_head *mask_rjhead;
+static int gotOddMasks;
+static char *maskedKey;
+static char *rj_zeroes, *rj_ones;
+
+#define rj_masktop (mask_rjhead->rnh_treetop)
+#ifdef Bcmp
+#undef Bcmp
+#endif /* Bcmp */
+#define Bcmp(a, b, l) (l == 0 ? 0 : memcmp((caddr_t)(b), (caddr_t)(a), (size_t)l))
+/*
+ * The data structure for the keys is a radix tree with one way
+ * branching removed.  The index rj_b at an internal node n represents a bit
+ * position to be tested.  The tree is arranged so that all descendants
+ * of a node n have keys whose bits all agree up to position rj_b - 1.
+ * (We say the index of n is rj_b.)
+ *
+ * There is at least one descendant which has a one bit at position rj_b,
+ * and at least one with a zero there.
+ *
+ * A route is determined by a pair of key and mask.  We require that the
+ * bit-wise logical and of the key and mask to be the key.
+ * We define the index of a route to associated with the mask to be
+ * the first bit number in the mask where 0 occurs (with bit number 0
+ * representing the highest order bit).
+ * 
+ * We say a mask is normal if every bit is 0, past the index of the mask.
+ * If a node n has a descendant (k, m) with index(m) == index(n) == rj_b,
+ * and m is a normal mask, then the route applies to every descendant of n.
+ * If the index(m) < rj_b, this implies the trailing last few bits of k
+ * before bit b are all 0, (and hence consequently true of every descendant
+ * of n), so the route applies to all descendants of the node as well.
+ *
+ * The present version of the code makes no use of normal routes,
+ * but similar logic shows that a non-normal mask m such that
+ * index(m) <= index(n) could potentially apply to many children of n.
+ * Thus, for each non-host route, we attach its mask to a list at an internal
+ * node as high in the tree as we can go. 
+ */
+
+struct radij_node *
+rj_search(v_arg, head)
+       void *v_arg;
+       struct radij_node *head;
+{
+       register struct radij_node *x;
+       register caddr_t v;
+
+       for (x = head, v = v_arg; x->rj_b >= 0;) {
+               if (x->rj_bmask & v[x->rj_off])
+                       x = x->rj_r;
+               else
+                       x = x->rj_l;
+       }
+       return (x);
+};
+
+struct radij_node *
+rj_search_m(v_arg, head, m_arg)
+       struct radij_node *head;
+       void *v_arg, *m_arg;
+{
+       register struct radij_node *x;
+       register caddr_t v = v_arg, m = m_arg;
+
+       for (x = head; x->rj_b >= 0;) {
+               if ((x->rj_bmask & m[x->rj_off]) &&
+                   (x->rj_bmask & v[x->rj_off]))
+                       x = x->rj_r;
+               else
+                       x = x->rj_l;
+       }
+       return x;
+};
+
+int
+rj_refines(m_arg, n_arg)
+       void *m_arg, *n_arg;
+{
+       register caddr_t m = m_arg, n = n_arg;
+       register caddr_t lim, lim2 = lim = n + *(u_char *)n;
+       int longer = (*(u_char *)n++) - (int)(*(u_char *)m++);
+       int masks_are_equal = 1;
+
+       if (longer > 0)
+               lim -= longer;
+       while (n < lim) {
+               if (*n & ~(*m))
+                       return 0;
+               if (*n++ != *m++)
+                       masks_are_equal = 0;
+                       
+       }
+       while (n < lim2)
+               if (*n++)
+                       return 0;
+       if (masks_are_equal && (longer < 0))
+               for (lim2 = m - longer; m < lim2; )
+                       if (*m++)
+                               return 1;
+       return (!masks_are_equal);
+}
+
+
+struct radij_node *
+rj_match(v_arg, head)
+       void *v_arg;
+       struct radij_node_head *head;
+{
+       caddr_t v = v_arg;
+       register struct radij_node *t = head->rnh_treetop, *x;
+       register caddr_t cp = v, cp2, cp3;
+       caddr_t cplim, mstart;
+       struct radij_node *saved_t, *top = t;
+       int off = t->rj_off, vlen = *(u_char *)cp, matched_off;
+
+       /*
+        * Open code rj_search(v, top) to avoid overhead of extra
+        * subroutine call.
+        */
+       for (; t->rj_b >= 0; ) {
+               if (t->rj_bmask & cp[t->rj_off])
+                       t = t->rj_r;
+               else
+                       t = t->rj_l;
+       }
+       /*
+        * See if we match exactly as a host destination
+        */
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: * See if we match exactly as a host destination\n");
+       
+       cp += off; cp2 = t->rj_key + off; cplim = v + vlen;
+       for (; cp < cplim; cp++, cp2++)
+               if (*cp != *cp2)
+                       goto on1;
+       /*
+        * This extra grot is in case we are explicitly asked
+        * to look up the default.  Ugh!
+        */
+       if ((t->rj_flags & RJF_ROOT) && t->rj_dupedkey)
+               t = t->rj_dupedkey;
+       return t;
+on1:
+       matched_off = cp - v;
+       saved_t = t;
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: ** try to match a leaf, t=0x%p\n", t);
+       do {
+           if (t->rj_mask) {
+               /*
+                * Even if we don't match exactly as a hosts;
+                * we may match if the leaf we wound up at is
+                * a route to a net.
+                */
+               cp3 = matched_off + t->rj_mask;
+               cp2 = matched_off + t->rj_key;
+               for (; cp < cplim; cp++)
+                       if ((*cp2++ ^ *cp) & *cp3++)
+                               break;
+               if (cp == cplim)
+                       return t;
+               cp = matched_off + v;
+           }
+       } while ((t = t->rj_dupedkey));
+       t = saved_t;
+       /* start searching up the tree */
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: *** start searching up the tree, t=0x%p\n", t);
+       do {
+               register struct radij_mask *m;
+               
+               t = t->rj_p;
+               KLIPS_PRINT(debug_radij,
+                           "klips_debug:rj_match: **** t=0x%p\n", t);
+               if ((m = t->rj_mklist)) {
+                       /*
+                        * After doing measurements here, it may
+                        * turn out to be faster to open code
+                        * rj_search_m here instead of always
+                        * copying and masking.
+                        */
+                       off = min(t->rj_off, matched_off);
+                       mstart = maskedKey + off;
+                       do {
+                               cp2 = mstart;
+                               cp3 = m->rm_mask + off;
+                               KLIPS_PRINT(debug_radij,
+                                           "klips_debug:rj_match: ***** cp2=0x%p cp3=0x%p\n", cp2, cp3);
+                               for (cp = v + off; cp < cplim;)
+                                       *cp2++ =  *cp++ & *cp3++;
+                               x = rj_search(maskedKey, t);
+                               while (x && x->rj_mask != m->rm_mask)
+                                       x = x->rj_dupedkey;
+                               if (x &&
+                                   (Bcmp(mstart, x->rj_key + off,
+                                       vlen - off) == 0))
+                                           return x;
+                       } while ((m = m->rm_mklist));
+               }
+       } while (t != top);
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: ***** not found.\n");
+       return 0;
+};
+               
+#ifdef RJ_DEBUG
+int    rj_nodenum;
+struct radij_node *rj_clist;
+int    rj_saveinfo;
+DEBUG_NO_STATIC void traverse(struct radij_node *);
+#ifdef RJ_DEBUG2
+int    rj_debug =  1;
+#else
+int    rj_debug =  0;
+#endif /* RJ_DEBUG2 */
+#endif /* RJ_DEBUG */
+
+struct radij_node *
+rj_newpair(v, b, nodes)
+       void *v;
+       int b;
+       struct radij_node nodes[2];
+{
+       register struct radij_node *tt = nodes, *t = tt + 1;
+       t->rj_b = b; t->rj_bmask = 0x80 >> (b & 7);
+       t->rj_l = tt; t->rj_off = b >> 3;
+       tt->rj_b = -1; tt->rj_key = (caddr_t)v; tt->rj_p = t;
+       tt->rj_flags = t->rj_flags = RJF_ACTIVE;
+#ifdef RJ_DEBUG
+       tt->rj_info = rj_nodenum++; t->rj_info = rj_nodenum++;
+       tt->rj_twin = t; tt->rj_ybro = rj_clist; rj_clist = tt;
+#endif /* RJ_DEBUG */
+       return t;
+}
+
+struct radij_node *
+rj_insert(v_arg, head, dupentry, nodes)
+       void *v_arg;
+       struct radij_node_head *head;
+       int *dupentry;
+       struct radij_node nodes[2];
+{
+       caddr_t v = v_arg;
+       struct radij_node *top = head->rnh_treetop;
+       int head_off = top->rj_off, vlen = (int)*((u_char *)v);
+       register struct radij_node *t = rj_search(v_arg, top);
+       register caddr_t cp = v + head_off;
+       register int b;
+       struct radij_node *tt;
+       /*
+        *find first bit at which v and t->rj_key differ
+        */
+    {
+       register caddr_t cp2 = t->rj_key + head_off;
+       register int cmp_res;
+       caddr_t cplim = v + vlen;
+
+       while (cp < cplim)
+               if (*cp2++ != *cp++)
+                       goto on1;
+       *dupentry = 1;
+       return t;
+on1:
+       *dupentry = 0;
+       cmp_res = (cp[-1] ^ cp2[-1]) & 0xff;
+       for (b = (cp - v) << 3; cmp_res; b--)
+               cmp_res >>= 1;
+    }
+    {
+       register struct radij_node *p, *x = top;
+       cp = v;
+       do {
+               p = x;
+               if (cp[x->rj_off] & x->rj_bmask) 
+                       x = x->rj_r;
+               else x = x->rj_l;
+       } while (b > (unsigned) x->rj_b); /* x->rj_b < b && x->rj_b >= 0 */
+#ifdef RJ_DEBUG
+       if (rj_debug)
+               printk("klips_debug:Going In:\n"), traverse(p);
+#endif /* RJ_DEBUG */
+       t = rj_newpair(v_arg, b, nodes); tt = t->rj_l;
+       if ((cp[p->rj_off] & p->rj_bmask) == 0)
+               p->rj_l = t;
+       else
+               p->rj_r = t;
+       x->rj_p = t; t->rj_p = p; /* frees x, p as temp vars below */
+       if ((cp[t->rj_off] & t->rj_bmask) == 0) {
+               t->rj_r = x;
+       } else {
+               t->rj_r = tt; t->rj_l = x;
+       }
+#ifdef RJ_DEBUG
+       if (rj_debug)
+               printk("klips_debug:Coming out:\n"), traverse(p);
+#endif /* RJ_DEBUG */
+    }
+       return (tt);
+}
+
+struct radij_node *
+rj_addmask(n_arg, search, skip)
+       int search, skip;
+       void *n_arg;
+{
+       caddr_t netmask = (caddr_t)n_arg;
+       register struct radij_node *x;
+       register caddr_t cp, cplim;
+       register int b, mlen, j;
+       int maskduplicated;
+
+       mlen = *(u_char *)netmask;
+       if (search) {
+               x = rj_search(netmask, rj_masktop);
+               mlen = *(u_char *)netmask;
+               if (Bcmp(netmask, x->rj_key, mlen) == 0)
+                       return (x);
+       }
+       R_Malloc(x, struct radij_node *, maj_keylen + 2 * sizeof (*x));
+       if (x == 0)
+               return (0);
+       Bzero(x, maj_keylen + 2 * sizeof (*x));
+       cp = (caddr_t)(x + 2);
+       Bcopy(netmask, cp, mlen);
+       netmask = cp;
+       x = rj_insert(netmask, mask_rjhead, &maskduplicated, x);
+       /*
+        * Calculate index of mask.
+        */
+       cplim = netmask + mlen;
+       for (cp = netmask + skip; cp < cplim; cp++)
+               if (*(u_char *)cp != 0xff)
+                       break;
+       b = (cp - netmask) << 3;
+       if (cp != cplim) {
+               if (*cp != 0) {
+                       gotOddMasks = 1;
+                       for (j = 0x80; j; b++, j >>= 1)  
+                               if ((j & *cp) == 0)
+                                       break;
+               }
+       }
+       x->rj_b = -1 - b;
+       return (x);
+}
+
+#if 0
+struct radij_node *
+#endif
+int
+rj_addroute(v_arg, n_arg, head, treenodes)
+       void *v_arg, *n_arg;
+       struct radij_node_head *head;
+       struct radij_node treenodes[2];
+{
+       caddr_t v = (caddr_t)v_arg, netmask = (caddr_t)n_arg;
+       register struct radij_node *t, *x=NULL, *tt;
+       struct radij_node *saved_tt, *top = head->rnh_treetop;
+       short b = 0, b_leaf;
+       int mlen, keyduplicated;
+       caddr_t cplim;
+       struct radij_mask *m, **mp;
+
+       /*
+        * In dealing with non-contiguous masks, there may be
+        * many different routes which have the same mask.
+        * We will find it useful to have a unique pointer to
+        * the mask to speed avoiding duplicate references at
+        * nodes and possibly save time in calculating indices.
+        */
+       if (netmask)  {
+               x = rj_search(netmask, rj_masktop);
+               mlen = *(u_char *)netmask;
+               if (Bcmp(netmask, x->rj_key, mlen) != 0) {
+                       x = rj_addmask(netmask, 0, top->rj_off);
+                       if (x == 0)
+                               return /* (0) rgb */ ENOMEM;
+               }
+               netmask = x->rj_key;
+               b = -1 - x->rj_b;
+       }
+       /*
+        * Deal with duplicated keys: attach node to previous instance
+        */
+       saved_tt = tt = rj_insert(v, head, &keyduplicated, treenodes);
+       if (keyduplicated) {
+               do {
+                       if (tt->rj_mask == netmask)
+                               return /* (0) rgb */ ENXIO;
+                       t = tt;
+                       if (netmask == 0 ||
+                           (tt->rj_mask && rj_refines(netmask, tt->rj_mask)))
+                               break;
+               } while ((tt = tt->rj_dupedkey));
+               /*
+                * If the mask is not duplicated, we wouldn't
+                * find it among possible duplicate key entries
+                * anyway, so the above test doesn't hurt.
+                *
+                * We sort the masks for a duplicated key the same way as
+                * in a masklist -- most specific to least specific.
+                * This may require the unfortunate nuisance of relocating
+                * the head of the list.
+                */
+               if (tt && t == saved_tt) {
+                       struct  radij_node *xx = x;
+                       /* link in at head of list */
+                       (tt = treenodes)->rj_dupedkey = t;
+                       tt->rj_flags = t->rj_flags;
+                       tt->rj_p = x = t->rj_p;
+                       if (x->rj_l == t) x->rj_l = tt; else x->rj_r = tt;
+                       saved_tt = tt; x = xx;
+               } else {
+                       (tt = treenodes)->rj_dupedkey = t->rj_dupedkey;
+                       t->rj_dupedkey = tt;
+               }
+#ifdef RJ_DEBUG
+               t=tt+1; tt->rj_info = rj_nodenum++; t->rj_info = rj_nodenum++;
+               tt->rj_twin = t; tt->rj_ybro = rj_clist; rj_clist = tt;
+#endif /* RJ_DEBUG */
+               t = saved_tt;
+               tt->rj_key = (caddr_t) v;
+               tt->rj_b = -1;
+               tt->rj_flags = t->rj_flags & ~RJF_ROOT;
+       }
+       /*
+        * Put mask in tree.
+        */
+       if (netmask) {
+               tt->rj_mask = netmask;
+               tt->rj_b = x->rj_b;
+       }
+       t = saved_tt->rj_p;
+       b_leaf = -1 - t->rj_b;
+       if (t->rj_r == saved_tt) x = t->rj_l; else x = t->rj_r;
+       /* Promote general routes from below */
+       if (x->rj_b < 0) { 
+               if (x->rj_mask && (x->rj_b >= b_leaf) && x->rj_mklist == 0) {
+                       MKGet(m);
+                       if (m) {
+                               Bzero(m, sizeof *m);
+                               m->rm_b = x->rj_b;
+                               m->rm_mask = x->rj_mask;
+                               x->rj_mklist = t->rj_mklist = m;
+                       }
+               }
+       } else if (x->rj_mklist) {
+               /*
+                * Skip over masks whose index is > that of new node
+                */
+               for (mp = &x->rj_mklist; (m = *mp); mp = &m->rm_mklist)
+                       if (m->rm_b >= b_leaf)
+                               break;
+               t->rj_mklist = m; *mp = 0;
+       }
+       /* Add new route to highest possible ancestor's list */
+       if ((netmask == 0) || (b > t->rj_b ))
+               return /* tt rgb */ 0; /* can't lift at all */
+       b_leaf = tt->rj_b;
+       do {
+               x = t;
+               t = t->rj_p;
+       } while (b <= t->rj_b && x != top);
+       /*
+        * Search through routes associated with node to
+        * insert new route according to index.
+        * For nodes of equal index, place more specific
+        * masks first.
+        */
+       cplim = netmask + mlen;
+       for (mp = &x->rj_mklist; (m = *mp); mp = &m->rm_mklist) {
+               if (m->rm_b < b_leaf)
+                       continue;
+               if (m->rm_b > b_leaf)
+                       break;
+               if (m->rm_mask == netmask) {
+                       m->rm_refs++;
+                       tt->rj_mklist = m;
+                       return /* tt rgb */ 0;
+               }
+               if (rj_refines(netmask, m->rm_mask))
+                       break;
+       }
+       MKGet(m);
+       if (m == 0) {
+               printk("klips_debug:Mask for route not entered\n");
+               return /* (tt) rgb */ 0;
+       }
+       Bzero(m, sizeof *m);
+       m->rm_b = b_leaf;
+       m->rm_mask = netmask;
+       m->rm_mklist = *mp;
+       *mp = m;
+       tt->rj_mklist = m;
+       return /* tt rgb */ 0;
+}
+
+int
+rj_delete(v_arg, netmask_arg, head, node)
+       void *v_arg, *netmask_arg;
+       struct radij_node_head *head;
+       struct radij_node **node;
+{
+       register struct radij_node *t, *p, *x, *tt;
+       struct radij_mask *m, *saved_m, **mp;
+       struct radij_node *dupedkey, *saved_tt, *top;
+       caddr_t v, netmask;
+       int b, head_off, vlen;
+
+       v = v_arg;
+       netmask = netmask_arg;
+       x = head->rnh_treetop;
+       tt = rj_search(v, x);
+       head_off = x->rj_off;
+       vlen =  *(u_char *)v;
+       saved_tt = tt;
+       top = x;
+       if (tt == 0 ||
+           Bcmp(v + head_off, tt->rj_key + head_off, vlen - head_off))
+               return /* (0) rgb */ -EFAULT;
+       /*
+        * Delete our route from mask lists.
+        */
+       if ((dupedkey = tt->rj_dupedkey)) {
+               if (netmask) 
+                       netmask = rj_search(netmask, rj_masktop)->rj_key;
+               while (tt->rj_mask != netmask)
+                       if ((tt = tt->rj_dupedkey) == 0)
+                               return /* (0) rgb */ -ENXIO;
+       }
+       if (tt->rj_mask == 0 || (saved_m = m = tt->rj_mklist) == 0)
+               goto on1;
+       if (m->rm_mask != tt->rj_mask) {
+               printk("klips_debug:rj_delete: inconsistent annotation\n");
+               goto on1;
+       }
+       if (--m->rm_refs >= 0)
+               goto on1;
+       b = -1 - tt->rj_b;
+       t = saved_tt->rj_p;
+       if (b > t->rj_b)
+               goto on1; /* Wasn't lifted at all */
+       do {
+               x = t;
+               t = t->rj_p;
+       } while (b <= t->rj_b && x != top);
+       for (mp = &x->rj_mklist; (m = *mp); mp = &m->rm_mklist)
+               if (m == saved_m) {
+                       *mp = m->rm_mklist;
+                       MKFree(m);
+                       break;
+               }
+       if (m == 0)
+               printk("klips_debug:rj_delete: couldn't find our annotation\n");
+on1:
+       /*
+        * Eliminate us from tree
+        */
+       if (tt->rj_flags & RJF_ROOT)
+               return /* (0) rgb */ -EFAULT;
+#ifdef RJ_DEBUG
+       /* Get us out of the creation list */
+       for (t = rj_clist; t && t->rj_ybro != tt; t = t->rj_ybro) {}
+       if (t) t->rj_ybro = tt->rj_ybro;
+#endif /* RJ_DEBUG */
+       t = tt->rj_p;
+       if (dupedkey) {
+               if (tt == saved_tt) {
+                       x = dupedkey; x->rj_p = t;
+                       if (t->rj_l == tt) t->rj_l = x; else t->rj_r = x;
+               } else {
+                       for (x = p = saved_tt; p && p->rj_dupedkey != tt;)
+                               p = p->rj_dupedkey;
+                       if (p) p->rj_dupedkey = tt->rj_dupedkey;
+                       else printk("klips_debug:rj_delete: couldn't find us\n");
+               }
+               t = tt + 1;
+               if  (t->rj_flags & RJF_ACTIVE) {
+#ifndef RJ_DEBUG
+                       *++x = *t; p = t->rj_p;
+#else
+                       b = t->rj_info; *++x = *t; t->rj_info = b; p = t->rj_p;
+#endif /* RJ_DEBUG */
+                       if (p->rj_l == t) p->rj_l = x; else p->rj_r = x;
+                       x->rj_l->rj_p = x; x->rj_r->rj_p = x;
+               }
+               goto out;
+       }
+       if (t->rj_l == tt) x = t->rj_r; else x = t->rj_l;
+       p = t->rj_p;
+       if (p->rj_r == t) p->rj_r = x; else p->rj_l = x;
+       x->rj_p = p;
+       /*
+        * Demote routes attached to us.
+        */
+       if (t->rj_mklist) {
+               if (x->rj_b >= 0) {
+                       for (mp = &x->rj_mklist; (m = *mp);)
+                               mp = &m->rm_mklist;
+                       *mp = t->rj_mklist;
+               } else {
+                       for (m = t->rj_mklist; m;) {
+                               struct radij_mask *mm = m->rm_mklist;
+                               if (m == x->rj_mklist && (--(m->rm_refs) < 0)) {
+                                       x->rj_mklist = 0;
+                                       MKFree(m);
+                               } else 
+                                       printk("klips_debug:%s %p at %p\n",
+                                           "rj_delete: Orphaned Mask", m, x);
+                               m = mm;
+                       }
+               }
+       }
+       /*
+        * We may be holding an active internal node in the tree.
+        */
+       x = tt + 1;
+       if (t != x) {
+#ifndef RJ_DEBUG
+               *t = *x;
+#else
+               b = t->rj_info; *t = *x; t->rj_info = b;
+#endif /* RJ_DEBUG */
+               t->rj_l->rj_p = t; t->rj_r->rj_p = t;
+               p = x->rj_p;
+               if (p->rj_l == x) p->rj_l = t; else p->rj_r = t;
+       }
+out:
+       tt->rj_flags &= ~RJF_ACTIVE;
+       tt[1].rj_flags &= ~RJF_ACTIVE;
+       *node = tt;
+       return /* (tt) rgb */ 0;
+}
+
+int
+rj_walktree(h, f, w)
+       struct radij_node_head *h;
+       register int (*f)(struct radij_node *,void *);
+       void *w;
+{
+       int error;
+       struct radij_node *base, *next;
+       register struct radij_node *rn;
+
+       if(!h || !f /* || !w */) {
+               return -1;
+       }
+
+       rn = h->rnh_treetop;
+       /*
+        * This gets complicated because we may delete the node
+        * while applying the function f to it, so we need to calculate
+        * the successor node in advance.
+        */
+       /* First time through node, go left */
+       while (rn->rj_b >= 0)
+               rn = rn->rj_l;
+       for (;;) {
+#ifdef CONFIG_IPSEC_DEBUG
+               if(debug_radij) {
+                       printk("klips_debug:RN_WALKTREE: for: rn=%p rj_b=%d rj_flags=%x", rn, rn->rj_b, rn->rj_flags);
+                       rn->rj_b >= 0 ?
+                               printk(" node off=%x\n", rn->rj_off) :
+                               printk(" leaf key = %08x->%08x\n",
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr))
+                               ;
+               }
+#endif /* CONFIG_IPSEC_DEBUG */
+               base = rn;
+               /* If at right child go back up, otherwise, go right */
+               while (rn->rj_p->rj_r == rn && (rn->rj_flags & RJF_ROOT) == 0)
+                       rn = rn->rj_p;
+               /* Find the next *leaf* since next node might vanish, too */
+               for (rn = rn->rj_p->rj_r; rn->rj_b >= 0;)
+                       rn = rn->rj_l;
+               next = rn;
+#ifdef CONFIG_IPSEC_DEBUG
+               if(debug_radij) {
+                       printk("klips_debug:RN_WALKTREE: processing leaves, rn=%p rj_b=%d rj_flags=%x", rn, rn->rj_b, rn->rj_flags);
+                       rn->rj_b >= 0 ?
+                               printk(" node off=%x\n", rn->rj_off) :
+                               printk(" leaf key = %08x->%08x\n",
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr))
+                               ;
+               }
+#endif /* CONFIG_IPSEC_DEBUG */
+               /* Process leaves */
+               while ((rn = base)) {
+                       base = rn->rj_dupedkey;
+#ifdef CONFIG_IPSEC_DEBUG
+                       if(debug_radij) {
+                               printk("klips_debug:RN_WALKTREE: while: base=%p rn=%p rj_b=%d rj_flags=%x",
+                                      base, rn, rn->rj_b, rn->rj_flags);
+                               rn->rj_b >= 0 ?
+                                       printk(" node off=%x\n", rn->rj_off) :
+                                       printk(" leaf key = %08x->%08x\n",
+                                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr))
+                                       ;
+                       }
+#endif /* CONFIG_IPSEC_DEBUG */
+                       if (!(rn->rj_flags & RJF_ROOT) && (error = (*f)(rn, w)))
+                               return (-error);
+               }
+               rn = next;
+               if (rn->rj_flags & RJF_ROOT)
+                       return (0);
+       }
+       /* NOTREACHED */
+}
+
+int
+rj_inithead(head, off)
+       void **head;
+       int off;
+{
+       register struct radij_node_head *rnh;
+       register struct radij_node *t, *tt, *ttt;
+       if (*head)
+               return (1);
+       R_Malloc(rnh, struct radij_node_head *, sizeof (*rnh));
+       if (rnh == 0)
+               return (0);
+       Bzero(rnh, sizeof (*rnh));
+       *head = rnh;
+       t = rj_newpair(rj_zeroes, off, rnh->rnh_nodes);
+       ttt = rnh->rnh_nodes + 2;
+       t->rj_r = ttt;
+       t->rj_p = t;
+       tt = t->rj_l;
+       tt->rj_flags = t->rj_flags = RJF_ROOT | RJF_ACTIVE;
+       tt->rj_b = -1 - off;
+       *ttt = *tt;
+       ttt->rj_key = rj_ones;
+       rnh->rnh_addaddr = rj_addroute;
+       rnh->rnh_deladdr = rj_delete;
+       rnh->rnh_matchaddr = rj_match;
+       rnh->rnh_walktree = rj_walktree;
+       rnh->rnh_treetop = t;
+       return (1);
+}
+
+void
+rj_init()
+{
+       char *cp, *cplim;
+
+       if (maj_keylen == 0) {
+               printk("klips_debug:rj_init: radij functions require maj_keylen be set\n");
+               return;
+       }
+       R_Malloc(rj_zeroes, char *, 3 * maj_keylen);
+       if (rj_zeroes == NULL)
+               panic("rj_init");
+       Bzero(rj_zeroes, 3 * maj_keylen);
+       rj_ones = cp = rj_zeroes + maj_keylen;
+       maskedKey = cplim = rj_ones + maj_keylen;
+       while (cp < cplim)
+               *cp++ = -1;
+       if (rj_inithead((void **)&mask_rjhead, 0) == 0)
+               panic("rj_init 2");
+}
+
+void
+rj_preorder(struct radij_node *rn, int l)
+{
+       int i;
+       
+       if (rn == NULL){
+               printk("klips_debug:rj_preorder: NULL pointer\n");
+               return;
+       }
+       
+       if (rn->rj_b >= 0){
+               rj_preorder(rn->rj_l, l+1);
+               rj_preorder(rn->rj_r, l+1);
+               printk("klips_debug:");
+               for (i=0; i<l; i++)
+                       printk("*");
+               printk(" off = %d\n", rn->rj_off);
+       } else {
+               printk("klips_debug:");
+               for (i=0; i<l; i++)
+                       printk("@");
+               printk(" flags = %x", (u_int)rn->rj_flags);
+               if (rn->rj_flags & RJF_ACTIVE) {
+                       printk(" @key = %p", rn->rj_key);
+                       
+                       printk(" key = %08x->%08x",
+                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr));
+
+                       printk(" @mask = %p", rn->rj_mask);
+                       if (rn->rj_mask)
+                               printk(" mask = %08x->%08x",
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_mask)->sen_ip_src.s_addr),
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_mask)->sen_ip_dst.s_addr));
+               
+                       if (rn->rj_dupedkey)
+                               printk(" dupedkey = %08x", (u_int)rn->rj_dupedkey);
+               }
+               printk("\n");
+       }
+}
+
+#ifdef RJ_DEBUG
+DEBUG_NO_STATIC void traverse(struct radij_node *p)
+{
+  rj_preorder(p, 0);
+}
+#endif /* RJ_DEBUG */
+
+void
+rj_dumptrees(void)
+{
+       rj_preorder(rnh->rnh_treetop, 0);
+}
+
+void
+rj_free_mkfreelist(void)
+{
+       struct radij_mask *mknp, *mknp2;
+
+       mknp = rj_mkfreelist;
+       while(mknp)
+       {
+               mknp2 = mknp;
+               mknp = mknp->rm_mklist;
+               kfree(mknp2);
+       }
+}
+
+int
+radijcleartree(void)
+{
+       return rj_walktree(rnh, ipsec_rj_walker_delete, NULL);
+}
+
+int
+radijcleanup(void)
+{
+       int error = 0;
+
+       error = radijcleartree();
+
+       rj_free_mkfreelist();
+
+/*     rj_walktree(mask_rjhead, ipsec_rj_walker_delete, NULL); */
+       if(mask_rjhead) {
+               kfree(mask_rjhead);
+       }
+
+       if(rj_zeroes) {
+               kfree(rj_zeroes);
+       }
+
+       if(rnh) {
+               kfree(rnh);
+       }
+
+       return error;
+}
+
+/*
+ * $Log$
+ * Revision 1.31  2000/11/06 04:35:21  rgb
+ * Clear table *before* releasing other items in radijcleanup.
+ *
+ * Revision 1.30  2000/09/20 04:07:40  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names in
+ * oopsen.
+ *
+ * Revision 1.29  2000/09/12 03:25:02  rgb
+ * Moved radij_c_version printing to ipsec_version_get_info().
+ *
+ * Revision 1.28  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.27  2000/07/28 14:58:32  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.26  2000/05/10 23:11:37  rgb
+ * Comment out most of the startup version information.
+ *
+ * Revision 1.25  2000/01/21 06:21:47  rgb
+ * Change return codes to negative on error.
+ *
+ * Revision 1.24  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.23  1999/11/17 15:53:41  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.22  1999/10/15 22:17:28  rgb
+ * Modify radijcleanup() to call radijcleartree().
+ *
+ * Revision 1.21  1999/10/08 18:37:34  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.20  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.19  1999/10/01 08:35:52  rgb
+ * Add spinlock include to shut up compiler for 2.0.38.
+ *
+ * Revision 1.18  1999/09/23 18:02:52  rgb
+ * De-alarm the search failure message so it doesn't sound so grave.
+ *
+ * Revision 1.17  1999/05/25 21:26:01  rgb
+ * Fix rj_walktree() sanity checking bug.
+ *
+ * Revision 1.16  1999/05/09 03:25:38  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.15  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.14  1999/04/29 15:24:15  rgb
+ * Add sanity checking for null pointer arguments.
+ * Standardise an error return method.
+ *
+ * Revision 1.13  1999/04/11 00:29:02  henry
+ * GPL boilerplate
+ *
+ * Revision 1.12  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.11  1999/02/17 16:52:53  rgb
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Clean out unused cruft.
+ *
+ * Revision 1.10  1999/01/22 06:30:05  rgb
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ *
+ * Revision 1.9  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.8  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.7  1998/10/25 02:43:26  rgb
+ * Change return type on rj_addroute and rj_delete and add and argument
+ * to the latter to be able to transmit more infomation about errors.
+ *
+ * Revision 1.6  1998/10/19 14:30:06  rgb
+ * Added inclusion of freeswan.h.
+ *
+ * Revision 1.5  1998/10/09 04:33:27  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ * Fixed output formatting slightly.
+ *
+ * Revision 1.4  1998/07/28 00:06:59  rgb
+ * Add debug detail to tree traversing.
+ *
+ * Revision 1.3  1998/07/14 18:07:58  rgb
+ * Add a routine to clear the eroute tree.
+ *
+ * Revision 1.2  1998/06/25 20:03:22  rgb
+ * Cleanup #endif comments.  Debug output for rj_init.
+ *
+ * Revision 1.1  1998/06/18 21:30:22  henry
+ * move sources from klips/src to klips/net/ipsec to keep stupid kernel
+ * build scripts happier about symlinks
+ *
+ * Revision 1.8  1998/05/25 20:34:15  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Recover memory for eroute table on unload of module.
+ *
+ * Revision 1.7  1998/05/21 12:58:58  rgb
+ * Moved 'extern' definitions to ipsec_radij.h to support /proc 3k limit fix.
+ *
+ * Revision 1.6  1998/04/23 20:57:29  rgb
+ * Cleaned up compiler warnings for unused debugging functions.
+ *
+ * Revision 1.5  1998/04/22 16:51:38  rgb
+ * Tidy up radij debug code from recent rash of modifications to debug code.
+ *
+ * Revision 1.4  1998/04/21 21:28:56  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.3  1998/04/14 17:30:37  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.2  1998/04/12 22:03:25  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:15  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/radij.h linux/net/ipsec/radij.h
--- linux-noipsec/net/ipsec/radij.h     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/radij.h     Thu Nov 18 05:09:20 1999
@@ -0,0 +1,291 @@
+/*
+ * RCSID $Id$
+ */
+
+/*
+ * This file is defived from ${SRC}/sys/net/radix.h of BSD 4.4lite
+ *
+ * Variable and procedure names have been modified so that they don't
+ * conflict with the original BSD code, as a small number of modifications
+ * have been introduced and we may want to reuse this code in BSD.
+ * 
+ * The `j' in `radij' is pronounced as a voiceless guttural (like a Greek
+ * chi or a German ch sound (as `doch', not as in `milch'), or even a 
+ * spanish j as in Juan.  It is not as far back in the throat like
+ * the corresponding Hebrew sound, nor is it a soft breath like the English h.
+ * It has nothing to do with the Dutch ij sound.
+ * 
+ * Here is the appropriate copyright notice:
+ */
+
+/*
+ * Copyright (c) 1988, 1989, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)radix.h     8.1 (Berkeley) 6/10/93
+ */
+
+#ifndef _RADIJ_H_
+#define        _RADIJ_H_
+
+/* 
+#define RJ_DEBUG
+*/
+
+#ifdef __KERNEL__
+
+#ifndef __P
+#ifdef __STDC__
+#define __P(x)  x
+#else
+#define __P(x)  ()
+#endif
+#endif
+
+#ifndef NET_21
+#ifndef min
+static __inline__ int min(unsigned int a, unsigned int b)
+{
+        if (a > b)
+                a = b;
+        return a;
+}
+#endif /* !min */
+
+#ifndef max
+static __inline__ int max(unsigned int a, unsigned int b)
+{
+        if (a < b)
+                a = b;
+        return a;
+}
+#endif /* !max */
+#endif /* NET_21 */
+
+/*
+ * Radix search tree node layout.
+ */
+
+struct radij_node
+{
+       struct  radij_mask *rj_mklist;  /* list of masks contained in subtree */
+       struct  radij_node *rj_p;       /* parent */
+       short   rj_b;                   /* bit offset; -1-index(netmask) */
+       char    rj_bmask;               /* node: mask for bit test*/
+       u_char  rj_flags;               /* enumerated next */
+#define RJF_NORMAL     1               /* leaf contains normal route */
+#define RJF_ROOT       2               /* leaf is root leaf for tree */
+#define RJF_ACTIVE     4               /* This node is alive (for rtfree) */
+       union {
+               struct {                        /* leaf only data: */
+                       caddr_t rj_Key; /* object of search */
+                       caddr_t rj_Mask;        /* netmask, if present */
+                       struct  radij_node *rj_Dupedkey;
+               } rj_leaf;
+               struct {                        /* node only data: */
+                       int     rj_Off;         /* where to start compare */
+                       struct  radij_node *rj_L;/* progeny */
+                       struct  radij_node *rj_R;/* progeny */
+               }rj_node;
+       }               rj_u;
+#ifdef RJ_DEBUG
+       int rj_info;
+       struct radij_node *rj_twin;
+       struct radij_node *rj_ybro;
+#endif
+};
+
+#define rj_dupedkey rj_u.rj_leaf.rj_Dupedkey
+#define rj_key rj_u.rj_leaf.rj_Key
+#define rj_mask rj_u.rj_leaf.rj_Mask
+#define rj_off rj_u.rj_node.rj_Off
+#define rj_l rj_u.rj_node.rj_L
+#define rj_r rj_u.rj_node.rj_R
+
+/*
+ * Annotations to tree concerning potential routes applying to subtrees.
+ */
+
+extern struct radij_mask {
+       short   rm_b;                   /* bit offset; -1-index(netmask) */
+       char    rm_unused;              /* cf. rj_bmask */
+       u_char  rm_flags;               /* cf. rj_flags */
+       struct  radij_mask *rm_mklist;  /* more masks to try */
+       caddr_t rm_mask;                /* the mask */
+       int     rm_refs;                /* # of references to this struct */
+} *rj_mkfreelist;
+
+#define MKGet(m) {\
+       if (rj_mkfreelist) {\
+               m = rj_mkfreelist; \
+               rj_mkfreelist = (m)->rm_mklist; \
+       } else \
+               R_Malloc(m, struct radij_mask *, sizeof (*(m))); }\
+
+#define MKFree(m) { (m)->rm_mklist = rj_mkfreelist; rj_mkfreelist = (m);}
+
+struct radij_node_head {
+       struct  radij_node *rnh_treetop;
+       int     rnh_addrsize;           /* permit, but not require fixed keys */
+       int     rnh_pktsize;            /* permit, but not require fixed keys */
+#if 0
+       struct  radij_node *(*rnh_addaddr)      /* add based on sockaddr */
+               __P((void *v, void *mask,
+                    struct radij_node_head *head, struct radij_node nodes[]));
+#endif
+       int (*rnh_addaddr)      /* add based on sockaddr */
+               __P((void *v, void *mask,
+                    struct radij_node_head *head, struct radij_node nodes[]));
+       struct  radij_node *(*rnh_addpkt)       /* add based on packet hdr */
+               __P((void *v, void *mask,
+                    struct radij_node_head *head, struct radij_node nodes[]));
+#if 0
+       struct  radij_node *(*rnh_deladdr)      /* remove based on sockaddr */
+               __P((void *v, void *mask, struct radij_node_head *head));
+#endif
+       int (*rnh_deladdr)      /* remove based on sockaddr */
+               __P((void *v, void *mask, struct radij_node_head *head, struct radij_node **node));
+       struct  radij_node *(*rnh_delpkt)       /* remove based on packet hdr */
+               __P((void *v, void *mask, struct radij_node_head *head));
+       struct  radij_node *(*rnh_matchaddr)    /* locate based on sockaddr */
+               __P((void *v, struct radij_node_head *head));
+       struct  radij_node *(*rnh_matchpkt)     /* locate based on packet hdr */
+               __P((void *v, struct radij_node_head *head));
+       int     (*rnh_walktree)                 /* traverse tree */
+               __P((struct radij_node_head *head, int (*f)(struct radij_node *rn, void *w), void *w));
+       struct  radij_node rnh_nodes[3];        /* empty tree for common case */
+};
+
+
+#define Bcmp(a, b, n) memcmp(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n))
+#define Bcopy(a, b, n) memmove(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n))
+#define Bzero(p, n) memset((caddr_t)(p), 0, (unsigned)(n))
+#define R_Malloc(p, t, n) ((p = (t) kmalloc((size_t)(n), GFP_ATOMIC)), Bzero((p),(n)))
+#define Free(p) kfree((caddr_t)p);
+
+void    rj_init __P((void));
+int     rj_inithead __P((void **, int));
+int     rj_refines __P((void *, void *));
+int     rj_walktree __P((struct radij_node_head *head, int (*f)(struct radij_node *rn, void *w), void *w));
+struct radij_node
+        *rj_addmask __P((void *, int, int)) /* , rgb */ ;
+int /* * */ rj_addroute __P((void *, void *, struct radij_node_head *,
+                       struct radij_node [2])) /* , rgb */ ;
+int /* * */ rj_delete __P((void *, void *, struct radij_node_head *, struct radij_node **)) /* , rgb */ ;
+struct radij_node /* rgb */
+        *rj_insert __P((void *, struct radij_node_head *, int *,
+                       struct radij_node [2])),
+        *rj_match __P((void *, struct radij_node_head *)),
+        *rj_newpair __P((void *, int, struct radij_node[2])),
+        *rj_search __P((void *, struct radij_node *)),
+        *rj_search_m __P((void *, struct radij_node *, void *));
+
+void rj_deltree(struct radij_node_head *);
+void rj_delnodes(struct radij_node *);
+void rj_free_mkfreelist(void);
+int radijcleartree(void);
+int radijcleanup(void);
+
+extern struct radij_node_head *mask_rjhead;
+extern int maj_keylen;
+#endif /* __KERNEL__ */
+
+#endif /* _RADIJ_H_ */
+
+
+/*
+ * $Log$
+ * Revision 1.10  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.9  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.8  1999/04/29 15:24:58  rgb
+ * Add check for existence of macros min/max.
+ *
+ * Revision 1.7  1999/04/11 00:29:02  henry
+ * GPL boilerplate
+ *
+ * Revision 1.6  1999/04/06 04:54:29  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.5  1999/01/22 06:30:32  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.4  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.3  1998/10/25 02:43:27  rgb
+ * Change return type on rj_addroute and rj_delete and add and argument
+ * to the latter to be able to transmit more infomation about errors.
+ *
+ * Revision 1.2  1998/07/14 18:09:51  rgb
+ * Add a routine to clear eroute table.
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:30:22  henry
+ * move sources from klips/src to klips/net/ipsec to keep stupid kernel
+ * build scripts happier about symlinks
+ *
+ * Revision 1.4  1998/05/25 20:34:16  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Recover memory for eroute table on unload of module.
+ *
+ * Revision 1.3  1998/04/22 16:51:37  rgb
+ * Tidy up radij debug code from recent rash of modifications to debug code.
+ *
+ * Revision 1.2  1998/04/14 17:30:38  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.1  1998/04/09 03:06:16  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:44:45  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff -druN linux-noipsec/net/ipsec/sysctl_net_ipsec.c linux/net/ipsec/sysctl_net_ipsec.c
--- linux-noipsec/net/ipsec/sysctl_net_ipsec.c  Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/sysctl_net_ipsec.c  Sat Sep 16 03:50:15 2000
@@ -0,0 +1,174 @@
+/*
+ * sysctl interface to net IPSEC subsystem.
+ * Copyright (C) 1998, 1999, 2000  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id$
+ */
+
+/* -*- linux-c -*-
+ *
+ * Initiated April 3, 1998, Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ */
+
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+
+#ifdef CONFIG_SYSCTL
+
+#define NET_IPSEC 2112 /* Random number */                                        
+#ifdef CONFIG_IPSEC_DEBUG
+extern int       debug_ah;
+extern int       debug_esp;
+extern int       debug_tunnel;
+extern int       debug_eroute;
+extern int       debug_spi;
+extern int       debug_radij;
+extern int       debug_netlink;
+extern int       debug_xform;
+extern int       debug_rcv;
+extern int       debug_pfkey;
+extern int sysctl_ipsec_debug_verbose;
+#ifdef CONFIG_IPSEC_IPCOMP
+extern int sysctl_ipsec_debug_ipcomp;
+#endif /* CONFIG_IPSEC_IPCOMP */
+#endif /* CONFIG_IPSEC_DEBUG */
+
+extern int sysctl_ipsec_icmp;
+extern int sysctl_ipsec_no_eroute_pass;
+extern int sysctl_ipsec_inbound_policy_check;
+extern int sysctl_ipsec_opportunistic;
+extern int sysctl_ipsec_tos;
+
+enum {
+#ifdef CONFIG_IPSEC_DEBUG
+       NET_IPSEC_DEBUG_AH=1,
+       NET_IPSEC_DEBUG_ESP=2,
+       NET_IPSEC_DEBUG_TUNNEL=3,
+       NET_IPSEC_DEBUG_EROUTE=4,
+       NET_IPSEC_DEBUG_SPI=5,
+       NET_IPSEC_DEBUG_RADIJ=6,
+       NET_IPSEC_DEBUG_NETLINK=7,
+       NET_IPSEC_DEBUG_XFORM=8,
+       NET_IPSEC_DEBUG_RCV=9,
+       NET_IPSEC_DEBUG_PFKEY=10,
+       NET_IPSEC_DEBUG_VERBOSE=11,
+       NET_IPSEC_DEBUG_IPCOMP=12,
+#endif /* CONFIG_IPSEC_DEBUG */
+       NET_IPSEC_ICMP=13,
+       NET_IPSEC_NO_EROUTE_PASS=14,
+       NET_IPSEC_INBOUND_POLICY_CHECK=15,
+       NET_IPSEC_OPPORTUNISTIC=16,
+       NET_IPSEC_TOS=17
+};
+
+static ctl_table ipsec_table[] = {
+#ifdef CONFIG_IPSEC_DEBUG
+       { NET_IPSEC_DEBUG_AH, "debug_ah", &debug_ah,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_ESP, "debug_esp", &debug_esp,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_TUNNEL, "debug_tunnel", &debug_tunnel,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_EROUTE, "debug_eroute", &debug_eroute,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_SPI, "debug_spi", &debug_spi,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_RADIJ, "debug_radij", &debug_radij,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_NETLINK, "debug_netlink", &debug_netlink,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_XFORM, "debug_xform", &debug_xform,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_RCV, "debug_rcv", &debug_rcv,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_PFKEY, "debug_pfkey", &debug_pfkey,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_DEBUG_VERBOSE, "debug_verbose",&sysctl_ipsec_debug_verbose,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+#ifdef CONFIG_IPSEC_IPCOMP
+       { NET_IPSEC_DEBUG_IPCOMP, "debug_ipcomp", &sysctl_ipsec_debug_ipcomp,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+#endif /* CONFIG_IPSEC_IPCOMP */
+#endif /* CONFIG_IPSEC_DEBUG */
+       { NET_IPSEC_ICMP, "icmp", &sysctl_ipsec_icmp,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_NO_EROUTE_PASS, "no_eroute_pass", &sysctl_ipsec_no_eroute_pass,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_INBOUND_POLICY_CHECK, "inbound_policy_check", &sysctl_ipsec_inbound_policy_check,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_OPPORTUNISTIC, "opportunistic", &sysctl_ipsec_opportunistic,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       { NET_IPSEC_TOS, "tos", &sysctl_ipsec_tos,
+         sizeof(int), 0644, NULL, &proc_dointvec},    
+       {0}
+};
+
+static ctl_table ipsec_net_table[] = {
+        { NET_IPSEC, "ipsec", NULL, 0, 0555, ipsec_table },
+        { 0 }
+};
+ 
+static ctl_table ipsec_root_table[] = {
+        { CTL_NET, "net", NULL, 0, 0555, ipsec_net_table },
+        { 0 }
+};
+ 
+static struct ctl_table_header *ipsec_table_header;
+
+int ipsec_sysctl_register(void)
+{
+        ipsec_table_header = register_sysctl_table(ipsec_root_table, 0);
+        if (!ipsec_table_header) {
+                return -ENOMEM;
+       }
+        return 0;
+}
+ 
+void ipsec_sysctl_unregister(void)
+{
+        unregister_sysctl_table(ipsec_table_header);
+}
+
+#endif /* CONFIG_SYSCTL */
+
+/*
+ * $Log$
+ * Revision 1.10  2000/09/16 01:50:15  rgb
+ * Protect sysctl_ipsec_debug_ipcomp with compiler defines too so that the
+ * linker won't blame rj_delete() for missing symbols.  ;->  Damn statics...
+ *
+ * Revision 1.9  2000/09/15 23:17:51  rgb
+ * Moved stuff around to compile with debug off.
+ *
+ * Revision 1.8  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.7  2000/09/15 07:37:15  rgb
+ * Munged silly log comment that was causing a warning.
+ *
+ * Revision 1.6  2000/09/15 04:58:23  rgb
+ * Added tos runtime switch.
+ * Removed 'sysctl_ipsec_' prefix from /proc/sys/net/ipsec/ filenames.
+ *
+ * Revision 1.5  2000/09/12 03:25:28  rgb
+ * Filled in and implemented sysctl.
+ *
+ * Revision 1.4  1999/04/11 00:29:03  henry
+ * GPL boilerplate
+ *
+ * Revision 1.3  1999/04/06 04:54:29  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ */
diff -druN linux-noipsec/net/ipsec/version.c linux/net/ipsec/version.c
--- linux-noipsec/net/ipsec/version.c   Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/version.c   Thu Nov 30 06:02:51 2000
@@ -0,0 +1,2 @@
+/* silly pointless RCSID $Id$ */
+static const char freeswan_version[] = "1.8";
diff -druN linux-noipsec/net/ipsec/zlib/Makefile linux/net/ipsec/zlib/Makefile
--- linux-noipsec/net/ipsec/zlib/Makefile       Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/Makefile       Fri Sep 29 20:51:33 2000
@@ -0,0 +1,74 @@
+# Makefile for IPCOMP zlib deflate code
+# Copyright (C) 1998, 1999, 2000  Richard Guy Briggs.
+# Copyright (C) 2000  Svenning Soerensen
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id$
+#
+
+ifndef TOPDIR
+TOPDIR  := /usr/src/linux
+endif
+
+
+L_TARGET := zlib.a
+L_OBJS := adler32.o deflate.o infblock.o infcodes.o inffast.o inflate.o inftrees.o infutil.o trees.o zutil.o
+
+
+ifeq ($(CONFIG_IPSEC_DEBUG),y)
+override CFLAGS += -g
+endif
+
+override CFLAGS += -Wall 
+#override CFLAGS += -Wconversion 
+#override CFLAGS += -Wmissing-prototypes 
+override CFLAGS += -Wpointer-arith 
+#override CFLAGS += -Wcast-qual 
+#override CFLAGS += -Wmissing-declarations 
+override CFLAGS += -Wstrict-prototypes
+#override CFLAGS += -pedantic
+#override CFLAGS += -O3
+#override CFLAGS += -W
+#override CFLAGS += -Wwrite-strings 
+override CFLAGS += -Wbad-function-cast 
+override CFLAGS += -DIPCOMP_PREFIX
+
+.S.o:
+       $(CC) -D__ASSEMBLY__ -DNO_UNDERLINE -traditional -c $< -o $*.o
+
+ifdef CONFIG_M586
+  L_OBJS += match586.o
+  override CFLAGS += -DASMV
+endif
+ifdef CONFIG_M586TSC
+  L_OBJS += match586.o
+  override CFLAGS += -DASMV
+endif
+ifdef CONFIG_M686
+  L_OBJS += match686.o
+  override CFLAGS += -DASMV
+endif
+
+
+include $(TOPDIR)/Rules.make
+
+$(L_OBJS):  $(TOPDIR)/include/linux/config.h $(TOPDIR)/include/linux/autoconf.h
+
+clean:
+       -rm -f *.o *.a
+
+#
+# $Log$
+# Revision 1.1.1.1  2000/09/29 18:51:33  rgb
+# zlib_beginnings
+#
+#
diff -druN linux-noipsec/net/ipsec/zlib/adler32.c linux/net/ipsec/zlib/adler32.c
--- linux-noipsec/net/ipsec/zlib/adler32.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/adler32.c      Fri Sep 29 20:51:33 2000
@@ -0,0 +1,48 @@
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* @(#) $Id$ */
+
+#include "zlib.h"
+
+#define BASE 65521L /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf,i)  {s1 += buf[i]; s2 += s1;}
+#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf)   DO8(buf,0); DO8(buf,8);
+
+/* ========================================================================= */
+uLong ZEXPORT adler32(adler, buf, len)
+    uLong adler;
+    const Bytef *buf;
+    uInt len;
+{
+    unsigned long s1 = adler & 0xffff;
+    unsigned long s2 = (adler >> 16) & 0xffff;
+    int k;
+
+    if (buf == Z_NULL) return 1L;
+
+    while (len > 0) {
+        k = len < NMAX ? len : NMAX;
+        len -= k;
+        while (k >= 16) {
+            DO16(buf);
+           buf += 16;
+            k -= 16;
+        }
+        if (k != 0) do {
+            s1 += *buf++;
+           s2 += s1;
+        } while (--k);
+        s1 %= BASE;
+        s2 %= BASE;
+    }
+    return (s2 << 16) | s1;
+}
diff -druN linux-noipsec/net/ipsec/zlib/deflate.c linux/net/ipsec/zlib/deflate.c
--- linux-noipsec/net/ipsec/zlib/deflate.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/deflate.c      Fri Sep 29 20:51:33 2000
@@ -0,0 +1,1351 @@
+/* deflate.c -- compress data using the deflation algorithm
+ * Copyright (C) 1995-1998 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/*
+ *  ALGORITHM
+ *
+ *      The "deflation" process depends on being able to identify portions
+ *      of the input text which are identical to earlier input (within a
+ *      sliding window trailing behind the input currently being processed).
+ *
+ *      The most straightforward technique turns out to be the fastest for
+ *      most input files: try all possible matches and select the longest.
+ *      The key feature of this algorithm is that insertions into the string
+ *      dictionary are very simple and thus fast, and deletions are avoided
+ *      completely. Insertions are performed at each input character, whereas
+ *      string matches are performed only when the previous match ends. So it
+ *      is preferable to spend more time in matches to allow very fast string
+ *      insertions and avoid deletions. The matching algorithm for small
+ *      strings is inspired from that of Rabin & Karp. A brute force approach
+ *      is used to find longer strings when a small match has been found.
+ *      A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
+ *      (by Leonid Broukhis).
+ *         A previous version of this file used a more sophisticated algorithm
+ *      (by Fiala and Greene) which is guaranteed to run in linear amortized
+ *      time, but has a larger average cost, uses more memory and is patented.
+ *      However the F&G algorithm may be faster for some highly redundant
+ *      files if the parameter max_chain_length (described below) is too large.
+ *
+ *  ACKNOWLEDGEMENTS
+ *
+ *      The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
+ *      I found it in 'freeze' written by Leonid Broukhis.
+ *      Thanks to many people for bug reports and testing.
+ *
+ *  REFERENCES
+ *
+ *      Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
+ *      Available in ftp://ds.internic.net/rfc/rfc1951.txt
+ *
+ *      A description of the Rabin and Karp algorithm is given in the book
+ *         "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
+ *
+ *      Fiala,E.R., and Greene,D.H.
+ *         Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
+ *
+ */
+
+/* @(#) $Id$ */
+
+#include "deflate.h"
+
+local const char deflate_copyright[] =
+   " deflate 1.1.3 Copyright 1995-1998 Jean-loup Gailly ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+
+/* ===========================================================================
+ *  Function prototypes.
+ */
+typedef enum {
+    need_more,      /* block not completed, need more input or more output */
+    block_done,     /* block flush performed */
+    finish_started, /* finish started, need only more output at next deflate */
+    finish_done     /* finish done, accept no more input or output */
+} block_state;
+
+typedef block_state (*compress_func) OF((deflate_state *s, int flush));
+/* Compression function. Returns the block state after the call. */
+
+local void fill_window    OF((deflate_state *s));
+local block_state deflate_stored OF((deflate_state *s, int flush));
+local block_state deflate_fast   OF((deflate_state *s, int flush));
+local block_state deflate_slow   OF((deflate_state *s, int flush));
+local void lm_init        OF((deflate_state *s));
+local void putShortMSB    OF((deflate_state *s, uInt b));
+local void flush_pending  OF((z_streamp strm));
+local int read_buf        OF((z_streamp strm, Bytef *buf, unsigned size));
+#ifdef ASMV
+      void match_init OF((void)); /* asm code initialization */
+      uInt longest_match  OF((deflate_state *s, IPos cur_match));
+#else
+local uInt longest_match  OF((deflate_state *s, IPos cur_match));
+#endif
+
+#ifdef DEBUG
+local  void check_match OF((deflate_state *s, IPos start, IPos match,
+                            int length));
+#endif
+
+/* ===========================================================================
+ * Local data
+ */
+
+#define NIL 0
+/* Tail of hash chains */
+
+#ifndef TOO_FAR
+#  define TOO_FAR 4096
+#endif
+/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+/* Values for max_lazy_match, good_match and max_chain_length, depending on
+ * the desired pack level (0..9). The values given below have been tuned to
+ * exclude worst case performance for pathological files. Better values may be
+ * found for specific files.
+ */
+typedef struct config_s {
+   ush good_length; /* reduce lazy search above this match length */
+   ush max_lazy;    /* do not perform lazy search above this match length */
+   ush nice_length; /* quit search above this match length */
+   ush max_chain;
+   compress_func func;
+} config;
+
+local const config configuration_table[10] = {
+/*      good lazy nice chain */
+/* 0 */ {0,    0,  0,    0, deflate_stored},  /* store only */
+/* 1 */ {4,    4,  8,    4, deflate_fast}, /* maximum speed, no lazy matches */
+/* 2 */ {4,    5, 16,    8, deflate_fast},
+/* 3 */ {4,    6, 32,   32, deflate_fast},
+
+/* 4 */ {4,    4, 16,   16, deflate_slow},  /* lazy matches */
+/* 5 */ {8,   16, 32,   32, deflate_slow},
+/* 6 */ {8,   16, 128, 128, deflate_slow},
+/* 7 */ {8,   32, 128, 256, deflate_slow},
+/* 8 */ {32, 128, 258, 1024, deflate_slow},
+/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* maximum compression */
+
+/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
+ * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
+ * meaning.
+ */
+
+#define EQUAL 0
+/* result of memcmp for equal strings */
+
+struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
+
+/* ===========================================================================
+ * Update a hash value with the given input byte
+ * IN  assertion: all calls to to UPDATE_HASH are made with consecutive
+ *    input characters, so that a running hash key can be computed from the
+ *    previous key instead of complete recalculation each time.
+ */
+#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
+
+
+/* ===========================================================================
+ * Insert string str in the dictionary and set match_head to the previous head
+ * of the hash chain (the most recent string with same hash key). Return
+ * the previous length of the hash chain.
+ * If this file is compiled with -DFASTEST, the compression level is forced
+ * to 1, and no hash chains are maintained.
+ * IN  assertion: all calls to to INSERT_STRING are made with consecutive
+ *    input characters and the first MIN_MATCH bytes of str are valid
+ *    (except for the last MIN_MATCH-1 bytes of the input file).
+ */
+#ifdef FASTEST
+#define INSERT_STRING(s, str, match_head) \
+   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+    match_head = s->head[s->ins_h], \
+    s->head[s->ins_h] = (Pos)(str))
+#else
+#define INSERT_STRING(s, str, match_head) \
+   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+    s->prev[(str) & s->w_mask] = match_head = s->head[s->ins_h], \
+    s->head[s->ins_h] = (Pos)(str))
+#endif
+
+/* ===========================================================================
+ * Initialize the hash table (avoiding 64K overflow for 16 bit systems).
+ * prev[] will be initialized on the fly.
+ */
+#define CLEAR_HASH(s) \
+    s->head[s->hash_size-1] = NIL; \
+    zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
+
+/* ========================================================================= */
+int ZEXPORT deflateInit_(strm, level, version, stream_size)
+    z_streamp strm;
+    int level;
+    const char *version;
+    int stream_size;
+{
+    return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
+                        Z_DEFAULT_STRATEGY, version, stream_size);
+    /* To do: ignore strm->next_in if we use it as window */
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
+                 version, stream_size)
+    z_streamp strm;
+    int  level;
+    int  method;
+    int  windowBits;
+    int  memLevel;
+    int  strategy;
+    const char *version;
+    int stream_size;
+{
+    deflate_state *s;
+    int noheader = 0;
+    static const char* my_version = ZLIB_VERSION;
+
+    ushf *overlay;
+    /* We overlay pending_buf and d_buf+l_buf. This works since the average
+     * output size for (length,distance) codes is <= 24 bits.
+     */
+
+    if (version == Z_NULL || version[0] != my_version[0] ||
+        stream_size != sizeof(z_stream)) {
+       return Z_VERSION_ERROR;
+    }
+    if (strm == Z_NULL) return Z_STREAM_ERROR;
+
+    strm->msg = Z_NULL;
+    if (strm->zalloc == Z_NULL) {
+      return Z_STREAM_ERROR;
+/*     strm->zalloc = zcalloc;
+       strm->opaque = (voidpf)0;*/
+    }
+    if (strm->zfree == Z_NULL) return Z_STREAM_ERROR; /* strm->zfree = zcfree; */
+
+    if (level == Z_DEFAULT_COMPRESSION) level = 6;
+#ifdef FASTEST
+    level = 1;
+#endif
+
+    if (windowBits < 0) { /* undocumented feature: suppress zlib header */
+        noheader = 1;
+        windowBits = -windowBits;
+    }
+    if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
+        windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
+       strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
+        return Z_STREAM_ERROR;
+    }
+    s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
+    if (s == Z_NULL) return Z_MEM_ERROR;
+    strm->state = (struct internal_state FAR *)s;
+    s->strm = strm;
+
+    s->noheader = noheader;
+    s->w_bits = windowBits;
+    s->w_size = 1 << s->w_bits;
+    s->w_mask = s->w_size - 1;
+
+    s->hash_bits = memLevel + 7;
+    s->hash_size = 1 << s->hash_bits;
+    s->hash_mask = s->hash_size - 1;
+    s->hash_shift =  ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
+
+    s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
+    s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
+    s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));
+
+    s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+
+    overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
+    s->pending_buf = (uchf *) overlay;
+    s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L);
+
+    if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
+        s->pending_buf == Z_NULL) {
+        strm->msg = ERR_MSG(Z_MEM_ERROR);
+        deflateEnd (strm);
+        return Z_MEM_ERROR;
+    }
+    s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
+    s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
+
+    s->level = level;
+    s->strategy = strategy;
+    s->method = (Byte)method;
+
+    return deflateReset(strm);
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
+    z_streamp strm;
+    const Bytef *dictionary;
+    uInt  dictLength;
+{
+    deflate_state *s;
+    uInt length = dictLength;
+    uInt n;
+    IPos hash_head = 0;
+
+    if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL ||
+        strm->state->status != INIT_STATE) return Z_STREAM_ERROR;
+
+    s = strm->state;
+    strm->adler = adler32(strm->adler, dictionary, dictLength);
+
+    if (length < MIN_MATCH) return Z_OK;
+    if (length > MAX_DIST(s)) {
+       length = MAX_DIST(s);
+#ifndef USE_DICT_HEAD
+       dictionary += dictLength - length; /* use the tail of the dictionary */
+#endif
+    }
+    zmemcpy(s->window, dictionary, length);
+    s->strstart = length;
+    s->block_start = (long)length;
+
+    /* Insert all strings in the hash table (except for the last two bytes).
+     * s->lookahead stays null, so s->ins_h will be recomputed at the next
+     * call of fill_window.
+     */
+    s->ins_h = s->window[0];
+    UPDATE_HASH(s, s->ins_h, s->window[1]);
+    for (n = 0; n <= length - MIN_MATCH; n++) {
+       INSERT_STRING(s, n, hash_head);
+    }
+    if (hash_head) hash_head = 0;  /* to make compiler happy */
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateReset (strm)
+    z_streamp strm;
+{
+    deflate_state *s;
+    
+    if (strm == Z_NULL || strm->state == Z_NULL ||
+        strm->zalloc == Z_NULL || strm->zfree == Z_NULL) return Z_STREAM_ERROR;
+
+    strm->total_in = strm->total_out = 0;
+    strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
+    strm->data_type = Z_UNKNOWN;
+
+    s = (deflate_state *)strm->state;
+    s->pending = 0;
+    s->pending_out = s->pending_buf;
+
+    if (s->noheader < 0) {
+        s->noheader = 0; /* was set to -1 by deflate(..., Z_FINISH); */
+    }
+    s->status = s->noheader ? BUSY_STATE : INIT_STATE;
+    strm->adler = 1;
+    s->last_flush = Z_NO_FLUSH;
+
+    _tr_init(s);
+    lm_init(s);
+
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateParams(strm, level, strategy)
+    z_streamp strm;
+    int level;
+    int strategy;
+{
+    deflate_state *s;
+    compress_func func;
+    int err = Z_OK;
+
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    s = strm->state;
+
+    if (level == Z_DEFAULT_COMPRESSION) {
+       level = 6;
+    }
+    if (level < 0 || level > 9 || strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
+       return Z_STREAM_ERROR;
+    }
+    func = configuration_table[s->level].func;
+
+    if (func != configuration_table[level].func && strm->total_in != 0) {
+       /* Flush the last buffer: */
+       err = deflate(strm, Z_PARTIAL_FLUSH);
+    }
+    if (s->level != level) {
+       s->level = level;
+       s->max_lazy_match   = configuration_table[level].max_lazy;
+       s->good_match       = configuration_table[level].good_length;
+       s->nice_match       = configuration_table[level].nice_length;
+       s->max_chain_length = configuration_table[level].max_chain;
+    }
+    s->strategy = strategy;
+    return err;
+}
+
+/* =========================================================================
+ * Put a short in the pending buffer. The 16-bit value is put in MSB order.
+ * IN assertion: the stream state is correct and there is enough room in
+ * pending_buf.
+ */
+local void putShortMSB (s, b)
+    deflate_state *s;
+    uInt b;
+{
+    put_byte(s, (Byte)(b >> 8));
+    put_byte(s, (Byte)(b & 0xff));
+}   
+
+/* =========================================================================
+ * Flush as much pending output as possible. All deflate() output goes
+ * through this function so some applications may wish to modify it
+ * to avoid allocating a large strm->next_out buffer and copying into it.
+ * (See also read_buf()).
+ */
+local void flush_pending(strm)
+    z_streamp strm;
+{
+    unsigned len = strm->state->pending;
+
+    if (len > strm->avail_out) len = strm->avail_out;
+    if (len == 0) return;
+
+    zmemcpy(strm->next_out, strm->state->pending_out, len);
+    strm->next_out  += len;
+    strm->state->pending_out  += len;
+    strm->total_out += len;
+    strm->avail_out  -= len;
+    strm->state->pending -= len;
+    if (strm->state->pending == 0) {
+        strm->state->pending_out = strm->state->pending_buf;
+    }
+}
+
+/* ========================================================================= */
+int ZEXPORT deflate (strm, flush)
+    z_streamp strm;
+    int flush;
+{
+    int old_flush; /* value of flush param for previous deflate call */
+    deflate_state *s;
+
+    if (strm == Z_NULL || strm->state == Z_NULL ||
+       flush > Z_FINISH || flush < 0) {
+        return Z_STREAM_ERROR;
+    }
+    s = strm->state;
+
+    if (strm->next_out == Z_NULL ||
+        (strm->next_in == Z_NULL && strm->avail_in != 0) ||
+       (s->status == FINISH_STATE && flush != Z_FINISH)) {
+        ERR_RETURN(strm, Z_STREAM_ERROR);
+    }
+    if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
+
+    s->strm = strm; /* just in case */
+    old_flush = s->last_flush;
+    s->last_flush = flush;
+
+    /* Write the zlib header */
+    if (s->status == INIT_STATE) {
+
+        uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
+        uInt level_flags = (s->level-1) >> 1;
+
+        if (level_flags > 3) level_flags = 3;
+        header |= (level_flags << 6);
+       if (s->strstart != 0) header |= PRESET_DICT;
+        header += 31 - (header % 31);
+
+        s->status = BUSY_STATE;
+        putShortMSB(s, header);
+
+       /* Save the adler32 of the preset dictionary: */
+       if (s->strstart != 0) {
+           putShortMSB(s, (uInt)(strm->adler >> 16));
+           putShortMSB(s, (uInt)(strm->adler & 0xffff));
+       }
+       strm->adler = 1L;
+    }
+
+    /* Flush as much pending output as possible */
+    if (s->pending != 0) {
+        flush_pending(strm);
+        if (strm->avail_out == 0) {
+           /* Since avail_out is 0, deflate will be called again with
+            * more output space, but possibly with both pending and
+            * avail_in equal to zero. There won't be anything to do,
+            * but this is not an error situation so make sure we
+            * return OK instead of BUF_ERROR at next call of deflate:
+             */
+           s->last_flush = -1;
+           return Z_OK;
+       }
+
+    /* Make sure there is something to do and avoid duplicate consecutive
+     * flushes. For repeated and useless calls with Z_FINISH, we keep
+     * returning Z_STREAM_END instead of Z_BUFF_ERROR.
+     */
+    } else if (strm->avail_in == 0 && flush <= old_flush &&
+              flush != Z_FINISH) {
+        ERR_RETURN(strm, Z_BUF_ERROR);
+    }
+
+    /* User must not provide more input after the first FINISH: */
+    if (s->status == FINISH_STATE && strm->avail_in != 0) {
+        ERR_RETURN(strm, Z_BUF_ERROR);
+    }
+
+    /* Start a new block or continue the current one.
+     */
+    if (strm->avail_in != 0 || s->lookahead != 0 ||
+        (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
+        block_state bstate;
+
+       bstate = (*(configuration_table[s->level].func))(s, flush);
+
+        if (bstate == finish_started || bstate == finish_done) {
+            s->status = FINISH_STATE;
+        }
+        if (bstate == need_more || bstate == finish_started) {
+           if (strm->avail_out == 0) {
+               s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
+           }
+           return Z_OK;
+           /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
+            * of deflate should use the same flush parameter to make sure
+            * that the flush is complete. So we don't have to output an
+            * empty block here, this will be done at next call. This also
+            * ensures that for a very small output buffer, we emit at most
+            * one empty block.
+            */
+       }
+        if (bstate == block_done) {
+            if (flush == Z_PARTIAL_FLUSH) {
+                _tr_align(s);
+            } else { /* FULL_FLUSH or SYNC_FLUSH */
+                _tr_stored_block(s, (char*)0, 0L, 0);
+                /* For a full flush, this empty block will be recognized
+                 * as a special marker by inflate_sync().
+                 */
+                if (flush == Z_FULL_FLUSH) {
+                    CLEAR_HASH(s);             /* forget history */
+                }
+            }
+            flush_pending(strm);
+           if (strm->avail_out == 0) {
+             s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
+             return Z_OK;
+           }
+        }
+    }
+    Assert(strm->avail_out > 0, "bug2");
+
+    if (flush != Z_FINISH) return Z_OK;
+    if (s->noheader) return Z_STREAM_END;
+
+    /* Write the zlib trailer (adler32) */
+    putShortMSB(s, (uInt)(strm->adler >> 16));
+    putShortMSB(s, (uInt)(strm->adler & 0xffff));
+    flush_pending(strm);
+    /* If avail_out is zero, the application will call deflate again
+     * to flush the rest.
+     */
+    s->noheader = -1; /* write the trailer only once! */
+    return s->pending != 0 ? Z_OK : Z_STREAM_END;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateEnd (strm)
+    z_streamp strm;
+{
+    int status;
+
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+
+    status = strm->state->status;
+    if (status != INIT_STATE && status != BUSY_STATE &&
+       status != FINISH_STATE) {
+      return Z_STREAM_ERROR;
+    }
+
+    /* Deallocate in reverse order of allocations: */
+    TRY_FREE(strm, strm->state->pending_buf);
+    TRY_FREE(strm, strm->state->head);
+    TRY_FREE(strm, strm->state->prev);
+    TRY_FREE(strm, strm->state->window);
+
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+
+    return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
+}
+
+/* =========================================================================
+ * Copy the source state to the destination state.
+ * To simplify the source, this is not supported for 16-bit MSDOS (which
+ * doesn't have enough memory anyway to duplicate compression states).
+ */
+int ZEXPORT deflateCopy (dest, source)
+    z_streamp dest;
+    z_streamp source;
+{
+#ifdef MAXSEG_64K
+    return Z_STREAM_ERROR;
+#else
+    deflate_state *ds;
+    deflate_state *ss;
+    ushf *overlay;
+
+
+    if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {
+        return Z_STREAM_ERROR;
+    }
+
+    ss = source->state;
+
+    *dest = *source;
+
+    ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
+    if (ds == Z_NULL) return Z_MEM_ERROR;
+    dest->state = (struct internal_state FAR *) ds;
+    *ds = *ss;
+    ds->strm = dest;
+
+    ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
+    ds->prev   = (Posf *)  ZALLOC(dest, ds->w_size, sizeof(Pos));
+    ds->head   = (Posf *)  ZALLOC(dest, ds->hash_size, sizeof(Pos));
+    overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2);
+    ds->pending_buf = (uchf *) overlay;
+
+    if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
+        ds->pending_buf == Z_NULL) {
+        deflateEnd (dest);
+        return Z_MEM_ERROR;
+    }
+    /* following zmemcpy do not work for 16-bit MSDOS */
+    zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
+    zmemcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos));
+    zmemcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos));
+    zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
+
+    ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
+    ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);
+    ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;
+
+    ds->l_desc.dyn_tree = ds->dyn_ltree;
+    ds->d_desc.dyn_tree = ds->dyn_dtree;
+    ds->bl_desc.dyn_tree = ds->bl_tree;
+
+    return Z_OK;
+#endif
+}
+
+/* ===========================================================================
+ * Read a new buffer from the current input stream, update the adler32
+ * and total number of bytes read.  All deflate() input goes through
+ * this function so some applications may wish to modify it to avoid
+ * allocating a large strm->next_in buffer and copying from it.
+ * (See also flush_pending()).
+ */
+local int read_buf(strm, buf, size)
+    z_streamp strm;
+    Bytef *buf;
+    unsigned size;
+{
+    unsigned len = strm->avail_in;
+
+    if (len > size) len = size;
+    if (len == 0) return 0;
+
+    strm->avail_in  -= len;
+
+    if (!strm->state->noheader) {
+        strm->adler = adler32(strm->adler, strm->next_in, len);
+    }
+    zmemcpy(buf, strm->next_in, len);
+    strm->next_in  += len;
+    strm->total_in += len;
+
+    return (int)len;
+}
+
+/* ===========================================================================
+ * Initialize the "longest match" routines for a new zlib stream
+ */
+local void lm_init (s)
+    deflate_state *s;
+{
+    s->window_size = (ulg)2L*s->w_size;
+
+    CLEAR_HASH(s);
+
+    /* Set the default configuration parameters:
+     */
+    s->max_lazy_match   = configuration_table[s->level].max_lazy;
+    s->good_match       = configuration_table[s->level].good_length;
+    s->nice_match       = configuration_table[s->level].nice_length;
+    s->max_chain_length = configuration_table[s->level].max_chain;
+
+    s->strstart = 0;
+    s->block_start = 0L;
+    s->lookahead = 0;
+    s->match_length = s->prev_length = MIN_MATCH-1;
+    s->match_available = 0;
+    s->ins_h = 0;
+#ifdef ASMV
+    match_init(); /* initialize the asm code */
+#endif
+}
+
+/* ===========================================================================
+ * Set match_start to the longest match starting at the given string and
+ * return its length. Matches shorter or equal to prev_length are discarded,
+ * in which case the result is equal to prev_length and match_start is
+ * garbage.
+ * IN assertions: cur_match is the head of the hash chain for the current
+ *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+ * OUT assertion: the match length is not greater than s->lookahead.
+ */
+#ifndef ASMV
+/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
+ * match.S. The code will be functionally equivalent.
+ */
+#ifndef FASTEST
+local uInt longest_match(s, cur_match)
+    deflate_state *s;
+    IPos cur_match;                             /* current match */
+{
+    unsigned chain_length = s->max_chain_length;/* max hash chain length */
+    register Bytef *scan = s->window + s->strstart; /* current string */
+    register Bytef *match;                       /* matched string */
+    register int len;                           /* length of current match */
+    int best_len = s->prev_length;              /* best match length so far */
+    int nice_match = s->nice_match;             /* stop if match long enough */
+    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
+        s->strstart - (IPos)MAX_DIST(s) : NIL;
+    /* Stop when cur_match becomes <= limit. To simplify the code,
+     * we prevent matches with the string of window index 0.
+     */
+    Posf *prev = s->prev;
+    uInt wmask = s->w_mask;
+
+#ifdef UNALIGNED_OK
+    /* Compare two bytes at a time. Note: this is not always beneficial.
+     * Try with and without -DUNALIGNED_OK to check.
+     */
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
+    register ush scan_start = *(ushf*)scan;
+    register ush scan_end   = *(ushf*)(scan+best_len-1);
+#else
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+    register Byte scan_end1  = scan[best_len-1];
+    register Byte scan_end   = scan[best_len];
+#endif
+
+    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+     * It is easy to get rid of this optimization if necessary.
+     */
+    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+    /* Do not waste too much time if we already have a good match: */
+    if (s->prev_length >= s->good_match) {
+        chain_length >>= 2;
+    }
+    /* Do not look for matches beyond the end of the input. This is necessary
+     * to make deflate deterministic.
+     */
+    if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
+
+    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+    do {
+        Assert(cur_match < s->strstart, "no future");
+        match = s->window + cur_match;
+
+        /* Skip to next match if the match length cannot increase
+         * or if the match length is less than 2:
+         */
+#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
+        /* This code assumes sizeof(unsigned short) == 2. Do not use
+         * UNALIGNED_OK if your compiler uses a different size.
+         */
+        if (*(ushf*)(match+best_len-1) != scan_end ||
+            *(ushf*)match != scan_start) continue;
+
+        /* It is not necessary to compare scan[2] and match[2] since they are
+         * always equal when the other bytes match, given that the hash keys
+         * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
+         * strstart+3, +5, ... up to strstart+257. We check for insufficient
+         * lookahead only every 4th comparison; the 128th check will be made
+         * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
+         * necessary to put more guard bytes at the end of the window, or
+         * to check more often for insufficient lookahead.
+         */
+        Assert(scan[2] == match[2], "scan[2]?");
+        scan++, match++;
+        do {
+        } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 scan < strend);
+        /* The funny "do {}" generates better code on most compilers */
+
+        /* Here, scan <= window+strstart+257 */
+        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+        if (*scan == *match) scan++;
+
+        len = (MAX_MATCH - 1) - (int)(strend-scan);
+        scan = strend - (MAX_MATCH-1);
+
+#else /* UNALIGNED_OK */
+
+        if (match[best_len]   != scan_end  ||
+            match[best_len-1] != scan_end1 ||
+            *match            != *scan     ||
+            *++match          != scan[1])      continue;
+
+        /* The check at best_len-1 can be removed because it will be made
+         * again later. (This heuristic is not always a win.)
+         * It is not necessary to compare scan[2] and match[2] since they
+         * are always equal when the other bytes match, given that
+         * the hash keys are equal and that HASH_BITS >= 8.
+         */
+        scan += 2, match++;
+        Assert(*scan == *match, "match[2]?");
+
+        /* We check for insufficient lookahead only every 8th comparison;
+         * the 256th check will be made at strstart+258.
+         */
+        do {
+        } while (*++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 scan < strend);
+
+        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+        len = MAX_MATCH - (int)(strend - scan);
+        scan = strend - MAX_MATCH;
+
+#endif /* UNALIGNED_OK */
+
+        if (len > best_len) {
+            s->match_start = cur_match;
+            best_len = len;
+            if (len >= nice_match) break;
+#ifdef UNALIGNED_OK
+            scan_end = *(ushf*)(scan+best_len-1);
+#else
+            scan_end1  = scan[best_len-1];
+            scan_end   = scan[best_len];
+#endif
+        }
+    } while ((cur_match = prev[cur_match & wmask]) > limit
+             && --chain_length != 0);
+
+    if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
+    return s->lookahead;
+}
+
+#else /* FASTEST */
+/* ---------------------------------------------------------------------------
+ * Optimized version for level == 1 only
+ */
+local uInt longest_match(s, cur_match)
+    deflate_state *s;
+    IPos cur_match;                             /* current match */
+{
+    register Bytef *scan = s->window + s->strstart; /* current string */
+    register Bytef *match;                       /* matched string */
+    register int len;                           /* length of current match */
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+
+    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+     * It is easy to get rid of this optimization if necessary.
+     */
+    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+    Assert(cur_match < s->strstart, "no future");
+
+    match = s->window + cur_match;
+
+    /* Return failure if the match length is less than 2:
+     */
+    if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
+
+    /* The check at best_len-1 can be removed because it will be made
+     * again later. (This heuristic is not always a win.)
+     * It is not necessary to compare scan[2] and match[2] since they
+     * are always equal when the other bytes match, given that
+     * the hash keys are equal and that HASH_BITS >= 8.
+     */
+    scan += 2, match += 2;
+    Assert(*scan == *match, "match[2]?");
+
+    /* We check for insufficient lookahead only every 8th comparison;
+     * the 256th check will be made at strstart+258.
+     */
+    do {
+    } while (*++scan == *++match && *++scan == *++match &&
+            *++scan == *++match && *++scan == *++match &&
+            *++scan == *++match && *++scan == *++match &&
+            *++scan == *++match && *++scan == *++match &&
+            scan < strend);
+
+    Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+    len = MAX_MATCH - (int)(strend - scan);
+
+    if (len < MIN_MATCH) return MIN_MATCH - 1;
+
+    s->match_start = cur_match;
+    return len <= s->lookahead ? len : s->lookahead;
+}
+#endif /* FASTEST */
+#endif /* ASMV */
+
+#ifdef DEBUG
+/* ===========================================================================
+ * Check that the match at match_start is indeed a match.
+ */
+local void check_match(s, start, match, length)
+    deflate_state *s;
+    IPos start, match;
+    int length;
+{
+    /* check that the match is indeed a match */
+    if (zmemcmp(s->window + match,
+                s->window + start, length) != EQUAL) {
+        fprintf(stderr, " start %u, match %u, length %d\n",
+               start, match, length);
+        do {
+           fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
+       } while (--length != 0);
+        z_error("invalid match");
+    }
+    if (z_verbose > 1) {
+        fprintf(stderr,"\\[%d,%d]", start-match, length);
+        do { putc(s->window[start++], stderr); } while (--length != 0);
+    }
+}
+#else
+#  define check_match(s, start, match, length)
+#endif
+
+/* ===========================================================================
+ * Fill the window when the lookahead becomes insufficient.
+ * Updates strstart and lookahead.
+ *
+ * IN assertion: lookahead < MIN_LOOKAHEAD
+ * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+ *    At least one byte has been read, or avail_in == 0; reads are
+ *    performed for at least two bytes (required for the zip translate_eol
+ *    option -- not supported here).
+ */
+local void fill_window(s)
+    deflate_state *s;
+{
+    register unsigned n, m;
+    register Posf *p;
+    unsigned more;    /* Amount of free space at the end of the window. */
+    uInt wsize = s->w_size;
+
+    do {
+        more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
+
+        /* Deal with !@#$% 64K limit: */
+        if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
+            more = wsize;
+
+        } else if (more == (unsigned)(-1)) {
+            /* Very unlikely, but possible on 16 bit machine if strstart == 0
+             * and lookahead == 1 (input done one byte at time)
+             */
+            more--;
+
+        /* If the window is almost full and there is insufficient lookahead,
+         * move the upper half to the lower one to make room in the upper half.
+         */
+        } else if (s->strstart >= wsize+MAX_DIST(s)) {
+
+            zmemcpy(s->window, s->window+wsize, (unsigned)wsize);
+            s->match_start -= wsize;
+            s->strstart    -= wsize; /* we now have strstart >= MAX_DIST */
+            s->block_start -= (long) wsize;
+
+            /* Slide the hash table (could be avoided with 32 bit values
+               at the expense of memory usage). We slide even when level == 0
+               to keep the hash table consistent if we switch back to level > 0
+               later. (Using level 0 permanently is not an optimal usage of
+               zlib, so we don't care about this pathological case.)
+             */
+           n = s->hash_size;
+           p = &s->head[n];
+           do {
+               m = *--p;
+               *p = (Pos)(m >= wsize ? m-wsize : NIL);
+           } while (--n);
+
+           n = wsize;
+#ifndef FASTEST
+           p = &s->prev[n];
+           do {
+               m = *--p;
+               *p = (Pos)(m >= wsize ? m-wsize : NIL);
+               /* If n is not on any hash chain, prev[n] is garbage but
+                * its value will never be used.
+                */
+           } while (--n);
+#endif
+            more += wsize;
+        }
+        if (s->strm->avail_in == 0) return;
+
+        /* If there was no sliding:
+         *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+         *    more == window_size - lookahead - strstart
+         * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+         * => more >= window_size - 2*WSIZE + 2
+         * In the BIG_MEM or MMAP case (not yet supported),
+         *   window_size == input_size + MIN_LOOKAHEAD  &&
+         *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+         * Otherwise, window_size == 2*WSIZE so more >= 2.
+         * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+         */
+        Assert(more >= 2, "more < 2");
+
+        n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
+        s->lookahead += n;
+
+        /* Initialize the hash value now that we have some input: */
+        if (s->lookahead >= MIN_MATCH) {
+            s->ins_h = s->window[s->strstart];
+            UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+#if MIN_MATCH != 3
+            Call UPDATE_HASH() MIN_MATCH-3 more times
+#endif
+        }
+        /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+         * but this is not important since only literal bytes will be emitted.
+         */
+
+    } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
+}
+
+/* ===========================================================================
+ * Flush the current block, with given end-of-file flag.
+ * IN assertion: strstart is set to the end of the current match.
+ */
+#define FLUSH_BLOCK_ONLY(s, eof) { \
+   _tr_flush_block(s, (s->block_start >= 0L ? \
+                   (charf *)&s->window[(unsigned)s->block_start] : \
+                   (charf *)Z_NULL), \
+               (ulg)((long)s->strstart - s->block_start), \
+               (eof)); \
+   s->block_start = s->strstart; \
+   flush_pending(s->strm); \
+   Tracev((stderr,"[FLUSH]")); \
+}
+
+/* Same but force premature exit if necessary. */
+#define FLUSH_BLOCK(s, eof) { \
+   FLUSH_BLOCK_ONLY(s, eof); \
+   if (s->strm->avail_out == 0) return (eof) ? finish_started : need_more; \
+}
+
+/* ===========================================================================
+ * Copy without compression as much as possible from the input stream, return
+ * the current block state.
+ * This function does not insert new strings in the dictionary since
+ * uncompressible data is probably not useful. This function is used
+ * only for the level=0 compression option.
+ * NOTE: this function should be optimized to avoid extra copying from
+ * window to pending_buf.
+ */
+local block_state deflate_stored(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
+     * to pending_buf_size, and each stored block has a 5 byte header:
+     */
+    ulg max_block_size = 0xffff;
+    ulg max_start;
+
+    if (max_block_size > s->pending_buf_size - 5) {
+        max_block_size = s->pending_buf_size - 5;
+    }
+
+    /* Copy as much as possible from input to output: */
+    for (;;) {
+        /* Fill the window as much as possible: */
+        if (s->lookahead <= 1) {
+
+            Assert(s->strstart < s->w_size+MAX_DIST(s) ||
+                  s->block_start >= (long)s->w_size, "slide too late");
+
+            fill_window(s);
+            if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more;
+
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+       Assert(s->block_start >= 0L, "block gone");
+
+       s->strstart += s->lookahead;
+       s->lookahead = 0;
+
+       /* Emit a stored block if pending_buf will be full: */
+       max_start = s->block_start + max_block_size;
+        if (s->strstart == 0 || (ulg)s->strstart >= max_start) {
+           /* strstart == 0 is possible when wraparound on 16-bit machine */
+           s->lookahead = (uInt)(s->strstart - max_start);
+           s->strstart = (uInt)max_start;
+            FLUSH_BLOCK(s, 0);
+       }
+       /* Flush if we may have to slide, otherwise block_start may become
+         * negative and the data will be gone:
+         */
+        if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) {
+            FLUSH_BLOCK(s, 0);
+       }
+    }
+    FLUSH_BLOCK(s, flush == Z_FINISH);
+    return flush == Z_FINISH ? finish_done : block_done;
+}
+
+/* ===========================================================================
+ * Compress as much as possible from the input stream, return the current
+ * block state.
+ * This function does not perform lazy evaluation of matches and inserts
+ * new strings in the dictionary only for unmatched strings or for short
+ * matches. It is used only for the fast compression options.
+ */
+local block_state deflate_fast(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    IPos hash_head = NIL; /* head of the hash chain */
+    int bflush;           /* set if current block must be flushed */
+
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s->lookahead < MIN_LOOKAHEAD) {
+            fill_window(s);
+            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
+               return need_more;
+           }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart+2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        if (s->lookahead >= MIN_MATCH) {
+            INSERT_STRING(s, s->strstart, hash_head);
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         * At this point we have always match_length < MIN_MATCH
+         */
+        if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
+            /* To simplify the code, we prevent matches with the string
+             * of window index 0 (in particular we have to avoid a match
+             * of the string with itself at the start of the input file).
+             */
+            if (s->strategy != Z_HUFFMAN_ONLY) {
+                s->match_length = longest_match (s, hash_head);
+            }
+            /* longest_match() sets match_start */
+        }
+        if (s->match_length >= MIN_MATCH) {
+            check_match(s, s->strstart, s->match_start, s->match_length);
+
+            _tr_tally_dist(s, s->strstart - s->match_start,
+                           s->match_length - MIN_MATCH, bflush);
+
+            s->lookahead -= s->match_length;
+
+            /* Insert new strings in the hash table only if the match length
+             * is not too large. This saves time but degrades compression.
+             */
+#ifndef FASTEST
+            if (s->match_length <= s->max_insert_length &&
+                s->lookahead >= MIN_MATCH) {
+                s->match_length--; /* string at strstart already in hash table */
+                do {
+                    s->strstart++;
+                    INSERT_STRING(s, s->strstart, hash_head);
+                    /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+                     * always MIN_MATCH bytes ahead.
+                     */
+                } while (--s->match_length != 0);
+                s->strstart++; 
+            } else
+#endif
+           {
+                s->strstart += s->match_length;
+                s->match_length = 0;
+                s->ins_h = s->window[s->strstart];
+                UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+#if MIN_MATCH != 3
+                Call UPDATE_HASH() MIN_MATCH-3 more times
+#endif
+                /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+                 * matter since it will be recomputed at next deflate call.
+                 */
+            }
+        } else {
+            /* No match, output a literal byte */
+            Tracevv((stderr,"%c", s->window[s->strstart]));
+            _tr_tally_lit (s, s->window[s->strstart], bflush);
+            s->lookahead--;
+            s->strstart++; 
+        }
+        if (bflush) FLUSH_BLOCK(s, 0);
+    }
+    FLUSH_BLOCK(s, flush == Z_FINISH);
+    return flush == Z_FINISH ? finish_done : block_done;
+}
+
+/* ===========================================================================
+ * Same as above, but achieves better compression. We use a lazy
+ * evaluation for matches: a match is finally adopted only if there is
+ * no better match at the next window position.
+ */
+local block_state deflate_slow(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    IPos hash_head = NIL;    /* head of hash chain */
+    int bflush;              /* set if current block must be flushed */
+
+    /* Process the input block. */
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s->lookahead < MIN_LOOKAHEAD) {
+            fill_window(s);
+            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
+               return need_more;
+           }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart+2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        if (s->lookahead >= MIN_MATCH) {
+            INSERT_STRING(s, s->strstart, hash_head);
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         */
+        s->prev_length = s->match_length, s->prev_match = s->match_start;
+        s->match_length = MIN_MATCH-1;
+
+        if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
+            s->strstart - hash_head <= MAX_DIST(s)) {
+            /* To simplify the code, we prevent matches with the string
+             * of window index 0 (in particular we have to avoid a match
+             * of the string with itself at the start of the input file).
+             */
+            if (s->strategy != Z_HUFFMAN_ONLY) {
+                s->match_length = longest_match (s, hash_head);
+            }
+            /* longest_match() sets match_start */
+
+            if (s->match_length <= 5 && (s->strategy == Z_FILTERED ||
+                 (s->match_length == MIN_MATCH &&
+                  s->strstart - s->match_start > TOO_FAR))) {
+
+                /* If prev_match is also MIN_MATCH, match_start is garbage
+                 * but we will ignore the current match anyway.
+                 */
+                s->match_length = MIN_MATCH-1;
+            }
+        }
+        /* If there was a match at the previous step and the current
+         * match is not better, output the previous match:
+         */
+        if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
+            uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
+            /* Do not insert strings in hash table beyond this. */
+
+            check_match(s, s->strstart-1, s->prev_match, s->prev_length);
+
+            _tr_tally_dist(s, s->strstart -1 - s->prev_match,
+                          s->prev_length - MIN_MATCH, bflush);
+
+            /* Insert in hash table all strings up to the end of the match.
+             * strstart-1 and strstart are already inserted. If there is not
+             * enough lookahead, the last two strings are not inserted in
+             * the hash table.
+             */
+            s->lookahead -= s->prev_length-1;
+            s->prev_length -= 2;
+            do {
+                if (++s->strstart <= max_insert) {
+                    INSERT_STRING(s, s->strstart, hash_head);
+                }
+            } while (--s->prev_length != 0);
+            s->match_available = 0;
+            s->match_length = MIN_MATCH-1;
+            s->strstart++;
+
+            if (bflush) FLUSH_BLOCK(s, 0);
+
+        } else if (s->match_available) {
+            /* If there was no match at the previous position, output a
+             * single literal. If there was a match but the current match
+             * is longer, truncate the previous match to a single literal.
+             */
+            Tracevv((stderr,"%c", s->window[s->strstart-1]));
+           _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+           if (bflush) {
+                FLUSH_BLOCK_ONLY(s, 0);
+            }
+            s->strstart++;
+            s->lookahead--;
+            if (s->strm->avail_out == 0) return need_more;
+        } else {
+            /* There is no previous match to compare with, wait for
+             * the next step to decide.
+             */
+            s->match_available = 1;
+            s->strstart++;
+            s->lookahead--;
+        }
+    }
+    Assert (flush != Z_NO_FLUSH, "no flush?");
+    if (s->match_available) {
+        Tracevv((stderr,"%c", s->window[s->strstart-1]));
+        _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+        s->match_available = 0;
+    }
+    FLUSH_BLOCK(s, flush == Z_FINISH);
+    return flush == Z_FINISH ? finish_done : block_done;
+}
diff -druN linux-noipsec/net/ipsec/zlib/deflate.h linux/net/ipsec/zlib/deflate.h
--- linux-noipsec/net/ipsec/zlib/deflate.h      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/deflate.h      Fri Sep 29 20:51:34 2000
@@ -0,0 +1,318 @@
+/* deflate.h -- internal compression state
+ * Copyright (C) 1995-1998 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id$ */
+
+#ifndef _DEFLATE_H
+#define _DEFLATE_H
+
+#include "zutil.h"
+
+/* ===========================================================================
+ * Internal compression state.
+ */
+
+#define LENGTH_CODES 29
+/* number of length codes, not counting the special END_BLOCK code */
+
+#define LITERALS  256
+/* number of literal bytes 0..255 */
+
+#define L_CODES (LITERALS+1+LENGTH_CODES)
+/* number of Literal or Length codes, including the END_BLOCK code */
+
+#define D_CODES   30
+/* number of distance codes */
+
+#define BL_CODES  19
+/* number of codes used to transfer the bit lengths */
+
+#define HEAP_SIZE (2*L_CODES+1)
+/* maximum heap size */
+
+#define MAX_BITS 15
+/* All codes must not exceed MAX_BITS bits */
+
+#define INIT_STATE    42
+#define BUSY_STATE   113
+#define FINISH_STATE 666
+/* Stream status */
+
+
+/* Data structure describing a single value and its code string. */
+typedef struct ct_data_s {
+    union {
+        ush  freq;       /* frequency count */
+        ush  code;       /* bit string */
+    } fc;
+    union {
+        ush  dad;        /* father node in Huffman tree */
+        ush  len;        /* length of bit string */
+    } dl;
+} FAR ct_data;
+
+#define Freq fc.freq
+#define Code fc.code
+#define Dad  dl.dad
+#define Len  dl.len
+
+typedef struct static_tree_desc_s  static_tree_desc;
+
+typedef struct tree_desc_s {
+    ct_data *dyn_tree;           /* the dynamic tree */
+    int     max_code;            /* largest code with non zero frequency */
+    static_tree_desc *stat_desc; /* the corresponding static tree */
+} FAR tree_desc;
+
+typedef ush Pos;
+typedef Pos FAR Posf;
+typedef unsigned IPos;
+
+/* A Pos is an index in the character window. We use short instead of int to
+ * save space in the various tables. IPos is used only for parameter passing.
+ */
+
+typedef struct internal_state {
+    z_streamp strm;      /* pointer back to this zlib stream */
+    int   status;        /* as the name implies */
+    Bytef *pending_buf;  /* output still pending */
+    ulg   pending_buf_size; /* size of pending_buf */
+    Bytef *pending_out;  /* next pending byte to output to the stream */
+    int   pending;       /* nb of bytes in the pending buffer */
+    int   noheader;      /* suppress zlib header and adler32 */
+    Byte  data_type;     /* UNKNOWN, BINARY or ASCII */
+    Byte  method;        /* STORED (for zip only) or DEFLATED */
+    int   last_flush;    /* value of flush param for previous deflate call */
+
+                /* used by deflate.c: */
+
+    uInt  w_size;        /* LZ77 window size (32K by default) */
+    uInt  w_bits;        /* log2(w_size)  (8..16) */
+    uInt  w_mask;        /* w_size - 1 */
+
+    Bytef *window;
+    /* Sliding window. Input bytes are read into the second half of the window,
+     * and move to the first half later to keep a dictionary of at least wSize
+     * bytes. With this organization, matches are limited to a distance of
+     * wSize-MAX_MATCH bytes, but this ensures that IO is always
+     * performed with a length multiple of the block size. Also, it limits
+     * the window size to 64K, which is quite useful on MSDOS.
+     * To do: use the user input buffer as sliding window.
+     */
+
+    ulg window_size;
+    /* Actual size of window: 2*wSize, except when the user input buffer
+     * is directly used as sliding window.
+     */
+
+    Posf *prev;
+    /* Link to older string with same hash index. To limit the size of this
+     * array to 64K, this link is maintained only for the last 32K strings.
+     * An index in this array is thus a window index modulo 32K.
+     */
+
+    Posf *head; /* Heads of the hash chains or NIL. */
+
+    uInt  ins_h;          /* hash index of string to be inserted */
+    uInt  hash_size;      /* number of elements in hash table */
+    uInt  hash_bits;      /* log2(hash_size) */
+    uInt  hash_mask;      /* hash_size-1 */
+
+    uInt  hash_shift;
+    /* Number of bits by which ins_h must be shifted at each input
+     * step. It must be such that after MIN_MATCH steps, the oldest
+     * byte no longer takes part in the hash key, that is:
+     *   hash_shift * MIN_MATCH >= hash_bits
+     */
+
+    long block_start;
+    /* Window position at the beginning of the current output block. Gets
+     * negative when the window is moved backwards.
+     */
+
+    uInt match_length;           /* length of best match */
+    IPos prev_match;             /* previous match */
+    int match_available;         /* set if previous match exists */
+    uInt strstart;               /* start of string to insert */
+    uInt match_start;            /* start of matching string */
+    uInt lookahead;              /* number of valid bytes ahead in window */
+
+    uInt prev_length;
+    /* Length of the best match at previous step. Matches not greater than this
+     * are discarded. This is used in the lazy match evaluation.
+     */
+
+    uInt max_chain_length;
+    /* To speed up deflation, hash chains are never searched beyond this
+     * length.  A higher limit improves compression ratio but degrades the
+     * speed.
+     */
+
+    uInt max_lazy_match;
+    /* Attempt to find a better match only when the current match is strictly
+     * smaller than this value. This mechanism is used only for compression
+     * levels >= 4.
+     */
+#   define max_insert_length  max_lazy_match
+    /* Insert new strings in the hash table only if the match length is not
+     * greater than this length. This saves time but degrades compression.
+     * max_insert_length is used only for compression levels <= 3.
+     */
+
+    int level;    /* compression level (1..9) */
+    int strategy; /* favor or force Huffman coding*/
+
+    uInt good_match;
+    /* Use a faster search when the previous match is longer than this */
+
+    int nice_match; /* Stop searching when current match exceeds this */
+
+                /* used by trees.c: */
+    /* Didn't use ct_data typedef below to supress compiler warning */
+    struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+    struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+    struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+    struct tree_desc_s l_desc;               /* desc. for literal tree */
+    struct tree_desc_s d_desc;               /* desc. for distance tree */
+    struct tree_desc_s bl_desc;              /* desc. for bit length tree */
+
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+    int heap_len;               /* number of elements in the heap */
+    int heap_max;               /* element of largest frequency */
+    /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+     * The same heap array is used to build all trees.
+     */
+
+    uch depth[2*L_CODES+1];
+    /* Depth of each subtree used as tie breaker for trees of equal frequency
+     */
+
+    uchf *l_buf;          /* buffer for literals or lengths */
+
+    uInt  lit_bufsize;
+    /* Size of match buffer for literals/lengths.  There are 4 reasons for
+     * limiting lit_bufsize to 64K:
+     *   - frequencies can be kept in 16 bit counters
+     *   - if compression is not successful for the first block, all input
+     *     data is still in the window so we can still emit a stored block even
+     *     when input comes from standard input.  (This can also be done for
+     *     all blocks if lit_bufsize is not greater than 32K.)
+     *   - if compression is not successful for a file smaller than 64K, we can
+     *     even emit a stored file instead of a stored block (saving 5 bytes).
+     *     This is applicable only for zip (not gzip or zlib).
+     *   - creating new Huffman trees less frequently may not provide fast
+     *     adaptation to changes in the input data statistics. (Take for
+     *     example a binary file with poorly compressible code followed by
+     *     a highly compressible string table.) Smaller buffer sizes give
+     *     fast adaptation but have of course the overhead of transmitting
+     *     trees more frequently.
+     *   - I can't count above 4
+     */
+
+    uInt last_lit;      /* running index in l_buf */
+
+    ushf *d_buf;
+    /* Buffer for distances. To simplify the code, d_buf and l_buf have
+     * the same number of elements. To use different lengths, an extra flag
+     * array would be necessary.
+     */
+
+    ulg opt_len;        /* bit length of current block with optimal trees */
+    ulg static_len;     /* bit length of current block with static trees */
+    uInt matches;       /* number of string matches in current block */
+    int last_eob_len;   /* bit length of EOB code for last block */
+
+#ifdef DEBUG
+    ulg compressed_len; /* total bit length of compressed file mod 2^32 */
+    ulg bits_sent;      /* bit length of compressed data sent mod 2^32 */
+#endif
+
+    ush bi_buf;
+    /* Output buffer. bits are inserted starting at the bottom (least
+     * significant bits).
+     */
+    int bi_valid;
+    /* Number of valid bits in bi_buf.  All bits above the last valid bit
+     * are always zero.
+     */
+
+} FAR deflate_state;
+
+/* Output a byte on the stream.
+ * IN assertion: there is enough room in pending_buf.
+ */
+#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}
+
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+#define MAX_DIST(s)  ((s)->w_size-MIN_LOOKAHEAD)
+/* In order to simplify the code, particularly on 16 bit machines, match
+ * distances are limited to MAX_DIST instead of WSIZE.
+ */
+
+        /* in trees.c */
+void _tr_init         OF((deflate_state *s));
+int  _tr_tally        OF((deflate_state *s, unsigned dist, unsigned lc));
+void _tr_flush_block  OF((deflate_state *s, charf *buf, ulg stored_len,
+                         int eof));
+void _tr_align        OF((deflate_state *s));
+void _tr_stored_block OF((deflate_state *s, charf *buf, ulg stored_len,
+                          int eof));
+
+#define d_code(dist) \
+   ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
+/* Mapping from a distance to a distance code. dist is the distance - 1 and
+ * must not have side effects. _dist_code[256] and _dist_code[257] are never
+ * used.
+ */
+
+#ifndef DEBUG
+/* Inline versions of _tr_tally for speed: */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+  extern uch _length_code[];
+  extern uch _dist_code[];
+#else
+  extern const uch _length_code[];
+  extern const uch _dist_code[];
+#endif
+
+# define _tr_tally_lit(s, c, flush) \
+  { uch cc = (c); \
+    s->d_buf[s->last_lit] = 0; \
+    s->l_buf[s->last_lit++] = cc; \
+    s->dyn_ltree[cc].Freq++; \
+    flush = (s->last_lit == s->lit_bufsize-1); \
+   }
+# define _tr_tally_dist(s, distance, length, flush) \
+  { uch len = (length); \
+    ush dist = (distance); \
+    s->d_buf[s->last_lit] = dist; \
+    s->l_buf[s->last_lit++] = len; \
+    dist--; \
+    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
+    s->dyn_dtree[d_code(dist)].Freq++; \
+    flush = (s->last_lit == s->lit_bufsize-1); \
+  }
+#else
+# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
+# define _tr_tally_dist(s, distance, length, flush) \
+              flush = _tr_tally(s, distance, length) 
+#endif
+
+#endif /* _DEFLATE_H */
diff -druN linux-noipsec/net/ipsec/zlib/infblock.c linux/net/ipsec/zlib/infblock.c
--- linux-noipsec/net/ipsec/zlib/infblock.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/infblock.c     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,398 @@
+/* infblock.c -- interpret and process block types to last block
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include "zutil.h"
+#include "infblock.h"
+#include "inftrees.h"
+#include "infcodes.h"
+#include "infutil.h"
+
+struct inflate_codes_state {int dummy;}; /* for buggy compilers */
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+/* Table for deflate from PKZIP's appnote.txt. */
+local const uInt border[] = { /* Order of the bit length code lengths */
+        16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+/*
+   Notes beyond the 1.93a appnote.txt:
+
+   1. Distance pointers never point before the beginning of the output
+      stream.
+   2. Distance pointers can point back across blocks, up to 32k away.
+   3. There is an implied maximum of 7 bits for the bit length table and
+      15 bits for the actual data.
+   4. If only one code exists, then it is encoded using one bit.  (Zero
+      would be more efficient, but perhaps a little confusing.)  If two
+      codes exist, they are coded using one bit each (0 and 1).
+   5. There is no way of sending zero distance codes--a dummy must be
+      sent if there are none.  (History: a pre 2.0 version of PKZIP would
+      store blocks with no distance codes, but this was discovered to be
+      too harsh a criterion.)  Valid only for 1.93a.  2.04c does allow
+      zero distance codes, which is sent as one code of zero bits in
+      length.
+   6. There are up to 286 literal/length codes.  Code 256 represents the
+      end-of-block.  Note however that the static length tree defines
+      288 codes just to fill out the Huffman codes.  Codes 286 and 287
+      cannot be used though, since there is no length base or extra bits
+      defined for them.  Similarily, there are up to 30 distance codes.
+      However, static trees define 32 codes (all 5 bits) to fill out the
+      Huffman codes, but the last two had better not show up in the data.
+   7. Unzip can check dynamic Huffman blocks for complete code sets.
+      The exception is that a single code would not be complete (see #4).
+   8. The five bits following the block type is really the number of
+      literal codes sent minus 257.
+   9. Length codes 8,16,16 are interpreted as 13 length codes of 8 bits
+      (1+6+6).  Therefore, to output three times the length, you output
+      three codes (1+1+1), whereas to output four times the same length,
+      you only need two codes (1+3).  Hmm.
+  10. In the tree reconstruction algorithm, Code = Code + Increment
+      only if BitLength(i) is not zero.  (Pretty obvious.)
+  11. Correction: 4 Bits: # of Bit Length codes - 4     (4 - 19)
+  12. Note: length code 284 can represent 227-258, but length code 285
+      really is 258.  The last length deserves its own, short code
+      since it gets used a lot in very redundant files.  The length
+      258 is special since 258 - 3 (the min match length) is 255.
+  13. The literal/length and distance code bit lengths are read as a
+      single stream of lengths.  It is possible (and advantageous) for
+      a repeat code (16, 17, or 18) to go across the boundary between
+      the two sets of lengths.
+ */
+
+
+void inflate_blocks_reset(s, z, c)
+inflate_blocks_statef *s;
+z_streamp z;
+uLongf *c;
+{
+  if (c != Z_NULL)
+    *c = s->check;
+  if (s->mode == BTREE || s->mode == DTREE)
+    ZFREE(z, s->sub.trees.blens);
+  if (s->mode == CODES)
+    inflate_codes_free(s->sub.decode.codes, z);
+  s->mode = TYPE;
+  s->bitk = 0;
+  s->bitb = 0;
+  s->read = s->write = s->window;
+  if (s->checkfn != Z_NULL)
+    z->adler = s->check = (*s->checkfn)(0L, (const Bytef *)Z_NULL, 0);
+  Tracev((stderr, "inflate:   blocks reset\n"));
+}
+
+
+inflate_blocks_statef *inflate_blocks_new(z, c, w)
+z_streamp z;
+check_func c;
+uInt w;
+{
+  inflate_blocks_statef *s;
+
+  if ((s = (inflate_blocks_statef *)ZALLOC
+       (z,1,sizeof(struct inflate_blocks_state))) == Z_NULL)
+    return s;
+  if ((s->hufts =
+       (inflate_huft *)ZALLOC(z, sizeof(inflate_huft), MANY)) == Z_NULL)
+  {
+    ZFREE(z, s);
+    return Z_NULL;
+  }
+  if ((s->window = (Bytef *)ZALLOC(z, 1, w)) == Z_NULL)
+  {
+    ZFREE(z, s->hufts);
+    ZFREE(z, s);
+    return Z_NULL;
+  }
+  s->end = s->window + w;
+  s->checkfn = c;
+  s->mode = TYPE;
+  Tracev((stderr, "inflate:   blocks allocated\n"));
+  inflate_blocks_reset(s, z, Z_NULL);
+  return s;
+}
+
+
+int inflate_blocks(s, z, r)
+inflate_blocks_statef *s;
+z_streamp z;
+int r;
+{
+  uInt t;               /* temporary storage */
+  uLong b;              /* bit buffer */
+  uInt k;               /* bits in bit buffer */
+  Bytef *p;             /* input data pointer */
+  uInt n;               /* bytes available there */
+  Bytef *q;             /* output window write pointer */
+  uInt m;               /* bytes to end of window or read pointer */
+
+  /* copy input/output information to locals (UPDATE macro restores) */
+  LOAD
+
+  /* process input based on current state */
+  while (1) switch (s->mode)
+  {
+    case TYPE:
+      NEEDBITS(3)
+      t = (uInt)b & 7;
+      s->last = t & 1;
+      switch (t >> 1)
+      {
+        case 0:                         /* stored */
+          Tracev((stderr, "inflate:     stored block%s\n",
+                 s->last ? " (last)" : ""));
+          DUMPBITS(3)
+          t = k & 7;                    /* go to byte boundary */
+          DUMPBITS(t)
+          s->mode = LENS;               /* get length of stored block */
+          break;
+        case 1:                         /* fixed */
+          Tracev((stderr, "inflate:     fixed codes block%s\n",
+                 s->last ? " (last)" : ""));
+          {
+            uInt bl, bd;
+            inflate_huft *tl, *td;
+
+            inflate_trees_fixed(&bl, &bd, &tl, &td, z);
+            s->sub.decode.codes = inflate_codes_new(bl, bd, tl, td, z);
+            if (s->sub.decode.codes == Z_NULL)
+            {
+              r = Z_MEM_ERROR;
+              LEAVE
+            }
+          }
+          DUMPBITS(3)
+          s->mode = CODES;
+          break;
+        case 2:                         /* dynamic */
+          Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                 s->last ? " (last)" : ""));
+          DUMPBITS(3)
+          s->mode = TABLE;
+          break;
+        case 3:                         /* illegal */
+          DUMPBITS(3)
+          s->mode = BAD;
+          z->msg = (char*)"invalid block type";
+          r = Z_DATA_ERROR;
+          LEAVE
+      }
+      break;
+    case LENS:
+      NEEDBITS(32)
+      if ((((~b) >> 16) & 0xffff) != (b & 0xffff))
+      {
+        s->mode = BAD;
+        z->msg = (char*)"invalid stored block lengths";
+        r = Z_DATA_ERROR;
+        LEAVE
+      }
+      s->sub.left = (uInt)b & 0xffff;
+      b = k = 0;                      /* dump bits */
+      Tracev((stderr, "inflate:       stored length %u\n", s->sub.left));
+      s->mode = s->sub.left ? STORED : (s->last ? DRY : TYPE);
+      break;
+    case STORED:
+      if (n == 0)
+        LEAVE
+      NEEDOUT
+      t = s->sub.left;
+      if (t > n) t = n;
+      if (t > m) t = m;
+      zmemcpy(q, p, t);
+      p += t;  n -= t;
+      q += t;  m -= t;
+      if ((s->sub.left -= t) != 0)
+        break;
+      Tracev((stderr, "inflate:       stored end, %lu total out\n",
+              z->total_out + (q >= s->read ? q - s->read :
+              (s->end - s->read) + (q - s->window))));
+      s->mode = s->last ? DRY : TYPE;
+      break;
+    case TABLE:
+      NEEDBITS(14)
+      s->sub.trees.table = t = (uInt)b & 0x3fff;
+#ifndef PKZIP_BUG_WORKAROUND
+      if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
+      {
+        s->mode = BAD;
+        z->msg = (char*)"too many length or distance symbols";
+        r = Z_DATA_ERROR;
+        LEAVE
+      }
+#endif
+      t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
+      if ((s->sub.trees.blens = (uIntf*)ZALLOC(z, t, sizeof(uInt))) == Z_NULL)
+      {
+        r = Z_MEM_ERROR;
+        LEAVE
+      }
+      DUMPBITS(14)
+      s->sub.trees.index = 0;
+      Tracev((stderr, "inflate:       table sizes ok\n"));
+      s->mode = BTREE;
+    case BTREE:
+      while (s->sub.trees.index < 4 + (s->sub.trees.table >> 10))
+      {
+        NEEDBITS(3)
+        s->sub.trees.blens[border[s->sub.trees.index++]] = (uInt)b & 7;
+        DUMPBITS(3)
+      }
+      while (s->sub.trees.index < 19)
+        s->sub.trees.blens[border[s->sub.trees.index++]] = 0;
+      s->sub.trees.bb = 7;
+      t = inflate_trees_bits(s->sub.trees.blens, &s->sub.trees.bb,
+                             &s->sub.trees.tb, s->hufts, z);
+      if (t != Z_OK)
+      {
+        ZFREE(z, s->sub.trees.blens);
+        r = t;
+        if (r == Z_DATA_ERROR)
+          s->mode = BAD;
+        LEAVE
+      }
+      s->sub.trees.index = 0;
+      Tracev((stderr, "inflate:       bits tree ok\n"));
+      s->mode = DTREE;
+    case DTREE:
+      while (t = s->sub.trees.table,
+             s->sub.trees.index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))
+      {
+        inflate_huft *h;
+        uInt i, j, c;
+
+        t = s->sub.trees.bb;
+        NEEDBITS(t)
+        h = s->sub.trees.tb + ((uInt)b & inflate_mask[t]);
+        t = h->bits;
+        c = h->base;
+        if (c < 16)
+        {
+          DUMPBITS(t)
+          s->sub.trees.blens[s->sub.trees.index++] = c;
+        }
+        else /* c == 16..18 */
+        {
+          i = c == 18 ? 7 : c - 14;
+          j = c == 18 ? 11 : 3;
+          NEEDBITS(t + i)
+          DUMPBITS(t)
+          j += (uInt)b & inflate_mask[i];
+          DUMPBITS(i)
+          i = s->sub.trees.index;
+          t = s->sub.trees.table;
+          if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) ||
+              (c == 16 && i < 1))
+          {
+            ZFREE(z, s->sub.trees.blens);
+            s->mode = BAD;
+            z->msg = (char*)"invalid bit length repeat";
+            r = Z_DATA_ERROR;
+            LEAVE
+          }
+          c = c == 16 ? s->sub.trees.blens[i - 1] : 0;
+          do {
+            s->sub.trees.blens[i++] = c;
+          } while (--j);
+          s->sub.trees.index = i;
+        }
+      }
+      s->sub.trees.tb = Z_NULL;
+      {
+        uInt bl, bd;
+        inflate_huft *tl, *td;
+        inflate_codes_statef *c;
+
+        bl = 9;         /* must be <= 9 for lookahead assumptions */
+        bd = 6;         /* must be <= 9 for lookahead assumptions */
+        t = s->sub.trees.table;
+        t = inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f),
+                                  s->sub.trees.blens, &bl, &bd, &tl, &td,
+                                  s->hufts, z);
+        ZFREE(z, s->sub.trees.blens);
+        if (t != Z_OK)
+        {
+          if (t == (uInt)Z_DATA_ERROR)
+            s->mode = BAD;
+          r = t;
+          LEAVE
+        }
+        Tracev((stderr, "inflate:       trees ok\n"));
+        if ((c = inflate_codes_new(bl, bd, tl, td, z)) == Z_NULL)
+        {
+          r = Z_MEM_ERROR;
+          LEAVE
+        }
+        s->sub.decode.codes = c;
+      }
+      s->mode = CODES;
+    case CODES:
+      UPDATE
+      if ((r = inflate_codes(s, z, r)) != Z_STREAM_END)
+        return inflate_flush(s, z, r);
+      r = Z_OK;
+      inflate_codes_free(s->sub.decode.codes, z);
+      LOAD
+      Tracev((stderr, "inflate:       codes end, %lu total out\n",
+              z->total_out + (q >= s->read ? q - s->read :
+              (s->end - s->read) + (q - s->window))));
+      if (!s->last)
+      {
+        s->mode = TYPE;
+        break;
+      }
+      s->mode = DRY;
+    case DRY:
+      FLUSH
+      if (s->read != s->write)
+        LEAVE
+      s->mode = DONE;
+    case DONE:
+      r = Z_STREAM_END;
+      LEAVE
+    case BAD:
+      r = Z_DATA_ERROR;
+      LEAVE
+    default:
+      r = Z_STREAM_ERROR;
+      LEAVE
+  }
+}
+
+
+int inflate_blocks_free(s, z)
+inflate_blocks_statef *s;
+z_streamp z;
+{
+  inflate_blocks_reset(s, z, Z_NULL);
+  ZFREE(z, s->window);
+  ZFREE(z, s->hufts);
+  ZFREE(z, s);
+  Tracev((stderr, "inflate:   blocks freed\n"));
+  return Z_OK;
+}
+
+
+void inflate_set_dictionary(s, d, n)
+inflate_blocks_statef *s;
+const Bytef *d;
+uInt  n;
+{
+  zmemcpy(s->window, d, n);
+  s->read = s->write = s->window + n;
+}
+
+
+/* Returns true if inflate is currently at the end of a block generated
+ * by Z_SYNC_FLUSH or Z_FULL_FLUSH. 
+ * IN assertion: s != Z_NULL
+ */
+int inflate_blocks_sync_point(s)
+inflate_blocks_statef *s;
+{
+  return s->mode == LENS;
+}
diff -druN linux-noipsec/net/ipsec/zlib/infblock.h linux/net/ipsec/zlib/infblock.h
--- linux-noipsec/net/ipsec/zlib/infblock.h     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/infblock.h     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,39 @@
+/* infblock.h -- header to use infblock.c
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+struct inflate_blocks_state;
+typedef struct inflate_blocks_state FAR inflate_blocks_statef;
+
+extern inflate_blocks_statef * inflate_blocks_new OF((
+    z_streamp z,
+    check_func c,               /* check function */
+    uInt w));                   /* window size */
+
+extern int inflate_blocks OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));                      /* initial return code */
+
+extern void inflate_blocks_reset OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    uLongf *));                  /* check value on output */
+
+extern int inflate_blocks_free OF((
+    inflate_blocks_statef *,
+    z_streamp));
+
+extern void inflate_set_dictionary OF((
+    inflate_blocks_statef *s,
+    const Bytef *d,  /* dictionary */
+    uInt  n));       /* dictionary length */
+
+extern int inflate_blocks_sync_point OF((
+    inflate_blocks_statef *s));
diff -druN linux-noipsec/net/ipsec/zlib/infcodes.c linux/net/ipsec/zlib/infcodes.c
--- linux-noipsec/net/ipsec/zlib/infcodes.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/infcodes.c     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,257 @@
+/* infcodes.c -- process literals and length/distance pairs
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "infblock.h"
+#include "infcodes.h"
+#include "infutil.h"
+#include "inffast.h"
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+typedef enum {        /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
+      START,    /* x: set up for LEN */
+      LEN,      /* i: get length/literal/eob next */
+      LENEXT,   /* i: getting length extra (have base) */
+      DIST,     /* i: get distance next */
+      DISTEXT,  /* i: getting distance extra */
+      COPY,     /* o: copying bytes in window, waiting for space */
+      LIT,      /* o: got literal, waiting for output space */
+      WASH,     /* o: got eob, possibly still output waiting */
+      END,      /* x: got eob and all data flushed */
+      BADCODE}  /* x: got error */
+inflate_codes_mode;
+
+/* inflate codes private state */
+struct inflate_codes_state {
+
+  /* mode */
+  inflate_codes_mode mode;      /* current inflate_codes mode */
+
+  /* mode dependent information */
+  uInt len;
+  union {
+    struct {
+      inflate_huft *tree;       /* pointer into tree */
+      uInt need;                /* bits needed */
+    } code;             /* if LEN or DIST, where in tree */
+    uInt lit;           /* if LIT, literal */
+    struct {
+      uInt get;                 /* bits to get for extra */
+      uInt dist;                /* distance back to copy from */
+    } copy;             /* if EXT or COPY, where and how much */
+  } sub;                /* submode */
+
+  /* mode independent information */
+  Byte lbits;           /* ltree bits decoded per branch */
+  Byte dbits;           /* dtree bits decoder per branch */
+  inflate_huft *ltree;          /* literal/length/eob tree */
+  inflate_huft *dtree;          /* distance tree */
+
+};
+
+
+inflate_codes_statef *inflate_codes_new(bl, bd, tl, td, z)
+uInt bl, bd;
+inflate_huft *tl;
+inflate_huft *td; /* need separate declaration for Borland C++ */
+z_streamp z;
+{
+  inflate_codes_statef *c;
+
+  if ((c = (inflate_codes_statef *)
+       ZALLOC(z,1,sizeof(struct inflate_codes_state))) != Z_NULL)
+  {
+    c->mode = START;
+    c->lbits = (Byte)bl;
+    c->dbits = (Byte)bd;
+    c->ltree = tl;
+    c->dtree = td;
+    Tracev((stderr, "inflate:       codes new\n"));
+  }
+  return c;
+}
+
+
+int inflate_codes(s, z, r)
+inflate_blocks_statef *s;
+z_streamp z;
+int r;
+{
+  uInt j;               /* temporary storage */
+  inflate_huft *t;      /* temporary pointer */
+  uInt e;               /* extra bits or operation */
+  uLong b;              /* bit buffer */
+  uInt k;               /* bits in bit buffer */
+  Bytef *p;             /* input data pointer */
+  uInt n;               /* bytes available there */
+  Bytef *q;             /* output window write pointer */
+  uInt m;               /* bytes to end of window or read pointer */
+  Bytef *f;             /* pointer to copy strings from */
+  inflate_codes_statef *c = s->sub.decode.codes;  /* codes state */
+
+  /* copy input/output information to locals (UPDATE macro restores) */
+  LOAD
+
+  /* process input and output based on current state */
+  while (1) switch (c->mode)
+  {             /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
+    case START:         /* x: set up for LEN */
+#ifndef SLOW
+      if (m >= 258 && n >= 10)
+      {
+        UPDATE
+        r = inflate_fast(c->lbits, c->dbits, c->ltree, c->dtree, s, z);
+        LOAD
+        if (r != Z_OK)
+        {
+          c->mode = r == Z_STREAM_END ? WASH : BADCODE;
+          break;
+        }
+      }
+#endif /* !SLOW */
+      c->sub.code.need = c->lbits;
+      c->sub.code.tree = c->ltree;
+      c->mode = LEN;
+    case LEN:           /* i: get length/literal/eob next */
+      j = c->sub.code.need;
+      NEEDBITS(j)
+      t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
+      DUMPBITS(t->bits)
+      e = (uInt)(t->exop);
+      if (e == 0)               /* literal */
+      {
+        c->sub.lit = t->base;
+        Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
+                 "inflate:         literal '%c'\n" :
+                 "inflate:         literal 0x%02x\n", t->base));
+        c->mode = LIT;
+        break;
+      }
+      if (e & 16)               /* length */
+      {
+        c->sub.copy.get = e & 15;
+        c->len = t->base;
+        c->mode = LENEXT;
+        break;
+      }
+      if ((e & 64) == 0)        /* next table */
+      {
+        c->sub.code.need = e;
+        c->sub.code.tree = t + t->base;
+        break;
+      }
+      if (e & 32)               /* end of block */
+      {
+        Tracevv((stderr, "inflate:         end of block\n"));
+        c->mode = WASH;
+        break;
+      }
+      c->mode = BADCODE;        /* invalid code */
+      z->msg = (char*)"invalid literal/length code";
+      r = Z_DATA_ERROR;
+      LEAVE
+    case LENEXT:        /* i: getting length extra (have base) */
+      j = c->sub.copy.get;
+      NEEDBITS(j)
+      c->len += (uInt)b & inflate_mask[j];
+      DUMPBITS(j)
+      c->sub.code.need = c->dbits;
+      c->sub.code.tree = c->dtree;
+      Tracevv((stderr, "inflate:         length %u\n", c->len));
+      c->mode = DIST;
+    case DIST:          /* i: get distance next */
+      j = c->sub.code.need;
+      NEEDBITS(j)
+      t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
+      DUMPBITS(t->bits)
+      e = (uInt)(t->exop);
+      if (e & 16)               /* distance */
+      {
+        c->sub.copy.get = e & 15;
+        c->sub.copy.dist = t->base;
+        c->mode = DISTEXT;
+        break;
+      }
+      if ((e & 64) == 0)        /* next table */
+      {
+        c->sub.code.need = e;
+        c->sub.code.tree = t + t->base;
+        break;
+      }
+      c->mode = BADCODE;        /* invalid code */
+      z->msg = (char*)"invalid distance code";
+      r = Z_DATA_ERROR;
+      LEAVE
+    case DISTEXT:       /* i: getting distance extra */
+      j = c->sub.copy.get;
+      NEEDBITS(j)
+      c->sub.copy.dist += (uInt)b & inflate_mask[j];
+      DUMPBITS(j)
+      Tracevv((stderr, "inflate:         distance %u\n", c->sub.copy.dist));
+      c->mode = COPY;
+    case COPY:          /* o: copying bytes in window, waiting for space */
+#ifndef __TURBOC__ /* Turbo C bug for following expression */
+      f = (uInt)(q - s->window) < c->sub.copy.dist ?
+          s->end - (c->sub.copy.dist - (q - s->window)) :
+          q - c->sub.copy.dist;
+#else
+      f = q - c->sub.copy.dist;
+      if ((uInt)(q - s->window) < c->sub.copy.dist)
+        f = s->end - (c->sub.copy.dist - (uInt)(q - s->window));
+#endif
+      while (c->len)
+      {
+        NEEDOUT
+        OUTBYTE(*f++)
+        if (f == s->end)
+          f = s->window;
+        c->len--;
+      }
+      c->mode = START;
+      break;
+    case LIT:           /* o: got literal, waiting for output space */
+      NEEDOUT
+      OUTBYTE(c->sub.lit)
+      c->mode = START;
+      break;
+    case WASH:          /* o: got eob, possibly more output */
+      if (k > 7)        /* return unused byte, if any */
+      {
+        Assert(k < 16, "inflate_codes grabbed too many bytes")
+        k -= 8;
+        n++;
+        p--;            /* can always return one */
+      }
+      FLUSH
+      if (s->read != s->write)
+        LEAVE
+      c->mode = END;
+    case END:
+      r = Z_STREAM_END;
+      LEAVE
+    case BADCODE:       /* x: got error */
+      r = Z_DATA_ERROR;
+      LEAVE
+    default:
+      r = Z_STREAM_ERROR;
+      LEAVE
+  }
+#ifdef NEED_DUMMY_RETURN
+  return Z_STREAM_ERROR;  /* Some dumb compilers complain without this */
+#endif
+}
+
+
+void inflate_codes_free(c, z)
+inflate_codes_statef *c;
+z_streamp z;
+{
+  ZFREE(z, c);
+  Tracev((stderr, "inflate:       codes free\n"));
+}
diff -druN linux-noipsec/net/ipsec/zlib/infcodes.h linux/net/ipsec/zlib/infcodes.h
--- linux-noipsec/net/ipsec/zlib/infcodes.h     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/infcodes.h     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,31 @@
+/* infcodes.h -- header to use infcodes.c
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFCODES_H
+#define _INFCODES_H
+
+struct inflate_codes_state;
+typedef struct inflate_codes_state FAR inflate_codes_statef;
+
+extern inflate_codes_statef *inflate_codes_new OF((
+    uInt, uInt,
+    inflate_huft *, inflate_huft *,
+    z_streamp ));
+
+extern int inflate_codes OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));
+
+extern void inflate_codes_free OF((
+    inflate_codes_statef *,
+    z_streamp ));
+
+#endif /* _INFCODES_H */
diff -druN linux-noipsec/net/ipsec/zlib/inffast.c linux/net/ipsec/zlib/inffast.c
--- linux-noipsec/net/ipsec/zlib/inffast.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/inffast.c      Fri Sep 29 20:51:34 2000
@@ -0,0 +1,170 @@
+/* inffast.c -- process literals and length/distance pairs fast
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "infblock.h"
+#include "infcodes.h"
+#include "infutil.h"
+#include "inffast.h"
+
+struct inflate_codes_state {int dummy;}; /* for buggy compilers */
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+/* macros for bit input with no checking and for returning unused bytes */
+#define GRABBITS(j) {while(k<(j)){b|=((uLong)NEXTBYTE)<<k;k+=8;}}
+#define UNGRAB {c=z->avail_in-n;c=(k>>3)<c?k>>3:c;n+=c;p-=c;k-=c<<3;}
+
+/* Called with number of bytes left to write in window at least 258
+   (the maximum string length) and number of input bytes available
+   at least ten.  The ten bytes are six bytes for the longest length/
+   distance pair plus four bytes for overloading the bit buffer. */
+
+int inflate_fast(bl, bd, tl, td, s, z)
+uInt bl, bd;
+inflate_huft *tl;
+inflate_huft *td; /* need separate declaration for Borland C++ */
+inflate_blocks_statef *s;
+z_streamp z;
+{
+  inflate_huft *t;      /* temporary pointer */
+  uInt e;               /* extra bits or operation */
+  uLong b;              /* bit buffer */
+  uInt k;               /* bits in bit buffer */
+  Bytef *p;             /* input data pointer */
+  uInt n;               /* bytes available there */
+  Bytef *q;             /* output window write pointer */
+  uInt m;               /* bytes to end of window or read pointer */
+  uInt ml;              /* mask for literal/length tree */
+  uInt md;              /* mask for distance tree */
+  uInt c;               /* bytes to copy */
+  uInt d;               /* distance back to copy from */
+  Bytef *r;             /* copy source pointer */
+
+  /* load input, output, bit values */
+  LOAD
+
+  /* initialize masks */
+  ml = inflate_mask[bl];
+  md = inflate_mask[bd];
+
+  /* do until not enough input or output space for fast loop */
+  do {                          /* assume called with m >= 258 && n >= 10 */
+    /* get literal/length code */
+    GRABBITS(20)                /* max bits for literal/length code */
+    if ((e = (t = tl + ((uInt)b & ml))->exop) == 0)
+    {
+      DUMPBITS(t->bits)
+      Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
+                "inflate:         * literal '%c'\n" :
+                "inflate:         * literal 0x%02x\n", t->base));
+      *q++ = (Byte)t->base;
+      m--;
+      continue;
+    }
+    do {
+      DUMPBITS(t->bits)
+      if (e & 16)
+      {
+        /* get extra bits for length */
+        e &= 15;
+        c = t->base + ((uInt)b & inflate_mask[e]);
+        DUMPBITS(e)
+        Tracevv((stderr, "inflate:         * length %u\n", c));
+
+        /* decode distance base of block to copy */
+        GRABBITS(15);           /* max bits for distance code */
+        e = (t = td + ((uInt)b & md))->exop;
+        do {
+          DUMPBITS(t->bits)
+          if (e & 16)
+          {
+            /* get extra bits to add to distance base */
+            e &= 15;
+            GRABBITS(e)         /* get extra bits (up to 13) */
+            d = t->base + ((uInt)b & inflate_mask[e]);
+            DUMPBITS(e)
+            Tracevv((stderr, "inflate:         * distance %u\n", d));
+
+            /* do the copy */
+            m -= c;
+            if ((uInt)(q - s->window) >= d)     /* offset before dest */
+            {                                   /*  just copy */
+              r = q - d;
+              *q++ = *r++;  c--;        /* minimum count is three, */
+              *q++ = *r++;  c--;        /*  so unroll loop a little */
+            }
+            else                        /* else offset after destination */
+            {
+              e = d - (uInt)(q - s->window); /* bytes from offset to end */
+              r = s->end - e;           /* pointer to offset */
+              if (c > e)                /* if source crosses, */
+              {
+                c -= e;                 /* copy to end of window */
+                do {
+                  *q++ = *r++;
+                } while (--e);
+                r = s->window;          /* copy rest from start of window */
+              }
+            }
+            do {                        /* copy all or what's left */
+              *q++ = *r++;
+            } while (--c);
+            break;
+          }
+          else if ((e & 64) == 0)
+          {
+            t += t->base;
+            e = (t += ((uInt)b & inflate_mask[e]))->exop;
+          }
+          else
+          {
+            z->msg = (char*)"invalid distance code";
+            UNGRAB
+            UPDATE
+            return Z_DATA_ERROR;
+          }
+        } while (1);
+        break;
+      }
+      if ((e & 64) == 0)
+      {
+        t += t->base;
+        if ((e = (t += ((uInt)b & inflate_mask[e]))->exop) == 0)
+        {
+          DUMPBITS(t->bits)
+          Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
+                    "inflate:         * literal '%c'\n" :
+                    "inflate:         * literal 0x%02x\n", t->base));
+          *q++ = (Byte)t->base;
+          m--;
+          break;
+        }
+      }
+      else if (e & 32)
+      {
+        Tracevv((stderr, "inflate:         * end of block\n"));
+        UNGRAB
+        UPDATE
+        return Z_STREAM_END;
+      }
+      else
+      {
+        z->msg = (char*)"invalid literal/length code";
+        UNGRAB
+        UPDATE
+        return Z_DATA_ERROR;
+      }
+    } while (1);
+  } while (m >= 258 && n >= 10);
+
+  /* not enough input or output--restore pointers and return */
+  UNGRAB
+  UPDATE
+  return Z_OK;
+}
diff -druN linux-noipsec/net/ipsec/zlib/inffast.h linux/net/ipsec/zlib/inffast.h
--- linux-noipsec/net/ipsec/zlib/inffast.h      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/inffast.h      Fri Sep 29 20:51:34 2000
@@ -0,0 +1,22 @@
+/* inffast.h -- header to use inffast.c
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFFAST_H
+#define _INFFAST_H
+
+extern int inflate_fast OF((
+    uInt,
+    uInt,
+    inflate_huft *,
+    inflate_huft *,
+    inflate_blocks_statef *,
+    z_streamp ));
+
+#endif /* _INFFAST_H */
diff -druN linux-noipsec/net/ipsec/zlib/inffixed.h linux/net/ipsec/zlib/inffixed.h
--- linux-noipsec/net/ipsec/zlib/inffixed.h     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/inffixed.h     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,151 @@
+/* inffixed.h -- table for decoding fixed codes
+ * Generated automatically by the maketree.c program
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+local uInt fixed_bl = 9;
+local uInt fixed_bd = 5;
+local inflate_huft fixed_tl[] = {
+    {{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
+    {{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},192},
+    {{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},160},
+    {{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},224},
+    {{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},144},
+    {{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},208},
+    {{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},176},
+    {{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},240},
+    {{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
+    {{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},200},
+    {{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},168},
+    {{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},232},
+    {{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},152},
+    {{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},216},
+    {{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},184},
+    {{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},248},
+    {{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
+    {{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},196},
+    {{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},164},
+    {{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},228},
+    {{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},148},
+    {{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},212},
+    {{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},180},
+    {{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},244},
+    {{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},204},
+    {{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},172},
+    {{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},236},
+    {{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},156},
+    {{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},220},
+    {{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},188},
+    {{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},252},
+    {{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
+    {{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},194},
+    {{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},162},
+    {{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},226},
+    {{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},146},
+    {{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},210},
+    {{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},178},
+    {{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},242},
+    {{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
+    {{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},202},
+    {{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},170},
+    {{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},234},
+    {{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},154},
+    {{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},218},
+    {{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},186},
+    {{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},250},
+    {{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
+    {{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},198},
+    {{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},166},
+    {{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},230},
+    {{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},150},
+    {{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},214},
+    {{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},182},
+    {{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},246},
+    {{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},206},
+    {{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},174},
+    {{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},238},
+    {{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},158},
+    {{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},222},
+    {{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},190},
+    {{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},254},
+    {{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
+    {{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},193},
+    {{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},161},
+    {{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},225},
+    {{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},145},
+    {{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},209},
+    {{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},177},
+    {{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},241},
+    {{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
+    {{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},201},
+    {{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},169},
+    {{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},233},
+    {{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},153},
+    {{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},217},
+    {{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},185},
+    {{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},249},
+    {{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
+    {{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},197},
+    {{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},165},
+    {{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},229},
+    {{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},149},
+    {{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},213},
+    {{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},181},
+    {{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},245},
+    {{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},205},
+    {{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},173},
+    {{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},237},
+    {{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},157},
+    {{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},221},
+    {{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},189},
+    {{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},253},
+    {{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
+    {{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},195},
+    {{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},163},
+    {{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},227},
+    {{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},147},
+    {{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},211},
+    {{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},179},
+    {{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},243},
+    {{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
+    {{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},203},
+    {{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},171},
+    {{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},235},
+    {{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},155},
+    {{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},219},
+    {{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},187},
+    {{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},251},
+    {{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
+    {{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},199},
+    {{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},167},
+    {{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},231},
+    {{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},151},
+    {{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},215},
+    {{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},183},
+    {{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},247},
+    {{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},207},
+    {{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},175},
+    {{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},239},
+    {{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},159},
+    {{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},223},
+    {{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},191},
+    {{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},255}
+  };
+local inflate_huft fixed_td[] = {
+    {{{80,5}},1}, {{{87,5}},257}, {{{83,5}},17}, {{{91,5}},4097},
+    {{{81,5}},5}, {{{89,5}},1025}, {{{85,5}},65}, {{{93,5}},16385},
+    {{{80,5}},3}, {{{88,5}},513}, {{{84,5}},33}, {{{92,5}},8193},
+    {{{82,5}},9}, {{{90,5}},2049}, {{{86,5}},129}, {{{192,5}},24577},
+    {{{80,5}},2}, {{{87,5}},385}, {{{83,5}},25}, {{{91,5}},6145},
+    {{{81,5}},7}, {{{89,5}},1537}, {{{85,5}},97}, {{{93,5}},24577},
+    {{{80,5}},4}, {{{88,5}},769}, {{{84,5}},49}, {{{92,5}},12289},
+    {{{82,5}},13}, {{{90,5}},3073}, {{{86,5}},193}, {{{192,5}},24577}
+  };
diff -druN linux-noipsec/net/ipsec/zlib/inflate.c linux/net/ipsec/zlib/inflate.c
--- linux-noipsec/net/ipsec/zlib/inflate.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/inflate.c      Fri Sep 29 20:51:34 2000
@@ -0,0 +1,368 @@
+/* inflate.c -- zlib interface to inflate modules
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include "zutil.h"
+#include "infblock.h"
+
+struct inflate_blocks_state {int dummy;}; /* for buggy compilers */
+
+typedef enum {
+      METHOD,   /* waiting for method byte */
+      FLAG,     /* waiting for flag byte */
+      DICT4,    /* four dictionary check bytes to go */
+      DICT3,    /* three dictionary check bytes to go */
+      DICT2,    /* two dictionary check bytes to go */
+      DICT1,    /* one dictionary check byte to go */
+      DICT0,    /* waiting for inflateSetDictionary */
+      BLOCKS,   /* decompressing blocks */
+      CHECK4,   /* four check bytes to go */
+      CHECK3,   /* three check bytes to go */
+      CHECK2,   /* two check bytes to go */
+      CHECK1,   /* one check byte to go */
+      DONE,     /* finished check, done */
+      BAD}      /* got an error--stay here */
+inflate_mode;
+
+/* inflate private state */
+struct internal_state {
+
+  /* mode */
+  inflate_mode  mode;   /* current inflate mode */
+
+  /* mode dependent information */
+  union {
+    uInt method;        /* if FLAGS, method byte */
+    struct {
+      uLong was;                /* computed check value */
+      uLong need;               /* stream check value */
+    } check;            /* if CHECK, check values to compare */
+    uInt marker;        /* if BAD, inflateSync's marker bytes count */
+  } sub;        /* submode */
+
+  /* mode independent information */
+  int  nowrap;          /* flag for no wrapper */
+  uInt wbits;           /* log2(window size)  (8..15, defaults to 15) */
+  inflate_blocks_statef 
+    *blocks;            /* current inflate_blocks state */
+
+};
+
+
+int ZEXPORT inflateReset(z)
+z_streamp z;
+{
+  if (z == Z_NULL || z->state == Z_NULL)
+    return Z_STREAM_ERROR;
+  z->total_in = z->total_out = 0;
+  z->msg = Z_NULL;
+  z->state->mode = z->state->nowrap ? BLOCKS : METHOD;
+  inflate_blocks_reset(z->state->blocks, z, Z_NULL);
+  Tracev((stderr, "inflate: reset\n"));
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateEnd(z)
+z_streamp z;
+{
+  if (z == Z_NULL || z->state == Z_NULL || z->zfree == Z_NULL)
+    return Z_STREAM_ERROR;
+  if (z->state->blocks != Z_NULL)
+    inflate_blocks_free(z->state->blocks, z);
+  ZFREE(z, z->state);
+  z->state = Z_NULL;
+  Tracev((stderr, "inflate: end\n"));
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateInit2_(z, w, version, stream_size)
+z_streamp z;
+int w;
+const char *version;
+int stream_size;
+{
+  if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
+      stream_size != sizeof(z_stream))
+      return Z_VERSION_ERROR;
+
+  /* initialize state */
+  if (z == Z_NULL)
+    return Z_STREAM_ERROR;
+  z->msg = Z_NULL;
+  if (z->zalloc == Z_NULL)
+  {
+    return Z_STREAM_ERROR;
+/*    z->zalloc = zcalloc;
+    z->opaque = (voidpf)0;
+*/
+  }
+  if (z->zfree == Z_NULL) return Z_STREAM_ERROR; /* z->zfree = zcfree; */
+  if ((z->state = (struct internal_state FAR *)
+       ZALLOC(z,1,sizeof(struct internal_state))) == Z_NULL)
+    return Z_MEM_ERROR;
+  z->state->blocks = Z_NULL;
+
+  /* handle undocumented nowrap option (no zlib header or check) */
+  z->state->nowrap = 0;
+  if (w < 0)
+  {
+    w = - w;
+    z->state->nowrap = 1;
+  }
+
+  /* set window size */
+  if (w < 8 || w > 15)
+  {
+    inflateEnd(z);
+    return Z_STREAM_ERROR;
+  }
+  z->state->wbits = (uInt)w;
+
+  /* create inflate_blocks state */
+  if ((z->state->blocks =
+      inflate_blocks_new(z, z->state->nowrap ? Z_NULL : adler32, (uInt)1 << w))
+      == Z_NULL)
+  {
+    inflateEnd(z);
+    return Z_MEM_ERROR;
+  }
+  Tracev((stderr, "inflate: allocated\n"));
+
+  /* reset state */
+  inflateReset(z);
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateInit_(z, version, stream_size)
+z_streamp z;
+const char *version;
+int stream_size;
+{
+  return inflateInit2_(z, DEF_WBITS, version, stream_size);
+}
+
+
+#define NEEDBYTE {if(z->avail_in==0)return r;r=f;}
+#define NEXTBYTE (z->avail_in--,z->total_in++,*z->next_in++)
+
+int ZEXPORT inflate(z, f)
+z_streamp z;
+int f;
+{
+  int r;
+  uInt b;
+
+  if (z == Z_NULL || z->state == Z_NULL || z->next_in == Z_NULL)
+    return Z_STREAM_ERROR;
+  f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
+  r = Z_BUF_ERROR;
+  while (1) switch (z->state->mode)
+  {
+    case METHOD:
+      NEEDBYTE
+      if (((z->state->sub.method = NEXTBYTE) & 0xf) != Z_DEFLATED)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"unknown compression method";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      if ((z->state->sub.method >> 4) + 8 > z->state->wbits)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"invalid window size";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      z->state->mode = FLAG;
+    case FLAG:
+      NEEDBYTE
+      b = NEXTBYTE;
+      if (((z->state->sub.method << 8) + b) % 31)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"incorrect header check";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      Tracev((stderr, "inflate: zlib header ok\n"));
+      if (!(b & PRESET_DICT))
+      {
+        z->state->mode = BLOCKS;
+        break;
+      }
+      z->state->mode = DICT4;
+    case DICT4:
+      NEEDBYTE
+      z->state->sub.check.need = (uLong)NEXTBYTE << 24;
+      z->state->mode = DICT3;
+    case DICT3:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 16;
+      z->state->mode = DICT2;
+    case DICT2:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 8;
+      z->state->mode = DICT1;
+    case DICT1:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE;
+      z->adler = z->state->sub.check.need;
+      z->state->mode = DICT0;
+      return Z_NEED_DICT;
+    case DICT0:
+      z->state->mode = BAD;
+      z->msg = (char*)"need dictionary";
+      z->state->sub.marker = 0;       /* can try inflateSync */
+      return Z_STREAM_ERROR;
+    case BLOCKS:
+      r = inflate_blocks(z->state->blocks, z, r);
+      if (r == Z_DATA_ERROR)
+      {
+        z->state->mode = BAD;
+        z->state->sub.marker = 0;       /* can try inflateSync */
+        break;
+      }
+      if (r == Z_OK)
+        r = f;
+      if (r != Z_STREAM_END)
+        return r;
+      r = f;
+      inflate_blocks_reset(z->state->blocks, z, &z->state->sub.check.was);
+      if (z->state->nowrap)
+      {
+        z->state->mode = DONE;
+        break;
+      }
+      z->state->mode = CHECK4;
+    case CHECK4:
+      NEEDBYTE
+      z->state->sub.check.need = (uLong)NEXTBYTE << 24;
+      z->state->mode = CHECK3;
+    case CHECK3:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 16;
+      z->state->mode = CHECK2;
+    case CHECK2:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 8;
+      z->state->mode = CHECK1;
+    case CHECK1:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE;
+
+      if (z->state->sub.check.was != z->state->sub.check.need)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"incorrect data check";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      Tracev((stderr, "inflate: zlib check ok\n"));
+      z->state->mode = DONE;
+    case DONE:
+      return Z_STREAM_END;
+    case BAD:
+      return Z_DATA_ERROR;
+    default:
+      return Z_STREAM_ERROR;
+  }
+#ifdef NEED_DUMMY_RETURN
+  return Z_STREAM_ERROR;  /* Some dumb compilers complain without this */
+#endif
+}
+
+
+int ZEXPORT inflateSetDictionary(z, dictionary, dictLength)
+z_streamp z;
+const Bytef *dictionary;
+uInt  dictLength;
+{
+  uInt length = dictLength;
+
+  if (z == Z_NULL || z->state == Z_NULL || z->state->mode != DICT0)
+    return Z_STREAM_ERROR;
+
+  if (adler32(1L, dictionary, dictLength) != z->adler) return Z_DATA_ERROR;
+  z->adler = 1L;
+
+  if (length >= ((uInt)1<<z->state->wbits))
+  {
+    length = (1<<z->state->wbits)-1;
+    dictionary += dictLength - length;
+  }
+  inflate_set_dictionary(z->state->blocks, dictionary, length);
+  z->state->mode = BLOCKS;
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateSync(z)
+z_streamp z;
+{
+  uInt n;       /* number of bytes to look at */
+  Bytef *p;     /* pointer to bytes */
+  uInt m;       /* number of marker bytes found in a row */
+  uLong r, w;   /* temporaries to save total_in and total_out */
+
+  /* set up */
+  if (z == Z_NULL || z->state == Z_NULL)
+    return Z_STREAM_ERROR;
+  if (z->state->mode != BAD)
+  {
+    z->state->mode = BAD;
+    z->state->sub.marker = 0;
+  }
+  if ((n = z->avail_in) == 0)
+    return Z_BUF_ERROR;
+  p = z->next_in;
+  m = z->state->sub.marker;
+
+  /* search */
+  while (n && m < 4)
+  {
+    static const Byte mark[4] = {0, 0, 0xff, 0xff};
+    if (*p == mark[m])
+      m++;
+    else if (*p)
+      m = 0;
+    else
+      m = 4 - m;
+    p++, n--;
+  }
+
+  /* restore */
+  z->total_in += p - z->next_in;
+  z->next_in = p;
+  z->avail_in = n;
+  z->state->sub.marker = m;
+
+  /* return no joy or set up to restart on a new block */
+  if (m != 4)
+    return Z_DATA_ERROR;
+  r = z->total_in;  w = z->total_out;
+  inflateReset(z);
+  z->total_in = r;  z->total_out = w;
+  z->state->mode = BLOCKS;
+  return Z_OK;
+}
+
+
+/* Returns true if inflate is currently at the end of a block generated
+ * by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
+ * implementation to provide an additional safety check. PPP uses Z_SYNC_FLUSH
+ * but removes the length bytes of the resulting empty stored block. When
+ * decompressing, PPP checks that at the end of input packet, inflate is
+ * waiting for these length bytes.
+ */
+int ZEXPORT inflateSyncPoint(z)
+z_streamp z;
+{
+  if (z == Z_NULL || z->state == Z_NULL || z->state->blocks == Z_NULL)
+    return Z_STREAM_ERROR;
+  return inflate_blocks_sync_point(z->state->blocks);
+}
diff -druN linux-noipsec/net/ipsec/zlib/inftrees.c linux/net/ipsec/zlib/inftrees.c
--- linux-noipsec/net/ipsec/zlib/inftrees.c     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/inftrees.c     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,455 @@
+/* inftrees.c -- generate Huffman trees for efficient decoding
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+
+#if !defined(BUILDFIXED) && !defined(STDC)
+#  define BUILDFIXED   /* non ANSI compilers may not accept inffixed.h */
+#endif
+
+local const char inflate_copyright[] =
+   " inflate 1.1.3 Copyright 1995-1998 Mark Adler ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+struct internal_state  {int dummy;}; /* for buggy compilers */
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+
+local int huft_build OF((
+    uIntf *,            /* code lengths in bits */
+    uInt,               /* number of codes */
+    uInt,               /* number of "simple" codes */
+    const uIntf *,      /* list of base values for non-simple codes */
+    const uIntf *,      /* list of extra bits for non-simple codes */
+    inflate_huft * FAR*,/* result: starting table */
+    uIntf *,            /* maximum lookup bits (returns actual) */
+    inflate_huft *,     /* space for trees */
+    uInt *,             /* hufts used in space */
+    uIntf * ));         /* space for values */
+
+/* Tables for deflate from PKZIP's appnote.txt. */
+local const uInt cplens[31] = { /* Copy lengths for literal codes 257..285 */
+        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
+        /* see note #13 above about 258 */
+local const uInt cplext[31] = { /* Extra bits for literal codes 257..285 */
+        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
+        3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112}; /* 112==invalid */
+local const uInt cpdist[30] = { /* Copy offsets for distance codes 0..29 */
+        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+        8193, 12289, 16385, 24577};
+local const uInt cpdext[30] = { /* Extra bits for distance codes */
+        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
+        7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
+        12, 12, 13, 13};
+
+/*
+   Huffman code decoding is performed using a multi-level table lookup.
+   The fastest way to decode is to simply build a lookup table whose
+   size is determined by the longest code.  However, the time it takes
+   to build this table can also be a factor if the data being decoded
+   is not very long.  The most common codes are necessarily the
+   shortest codes, so those codes dominate the decoding time, and hence
+   the speed.  The idea is you can have a shorter table that decodes the
+   shorter, more probable codes, and then point to subsidiary tables for
+   the longer codes.  The time it costs to decode the longer codes is
+   then traded against the time it takes to make longer tables.
+
+   This results of this trade are in the variables lbits and dbits
+   below.  lbits is the number of bits the first level table for literal/
+   length codes can decode in one step, and dbits is the same thing for
+   the distance codes.  Subsequent tables are also less than or equal to
+   those sizes.  These values may be adjusted either when all of the
+   codes are shorter than that, in which case the longest code length in
+   bits is used, or when the shortest code is *longer* than the requested
+   table size, in which case the length of the shortest code in bits is
+   used.
+
+   There are two different values for the two tables, since they code a
+   different number of possibilities each.  The literal/length table
+   codes 286 possible values, or in a flat code, a little over eight
+   bits.  The distance table codes 30 possible values, or a little less
+   than five bits, flat.  The optimum values for speed end up being
+   about one bit more than those, so lbits is 8+1 and dbits is 5+1.
+   The optimum values may differ though from machine to machine, and
+   possibly even between compilers.  Your mileage may vary.
+ */
+
+
+/* If BMAX needs to be larger than 16, then h and x[] should be uLong. */
+#define BMAX 15         /* maximum bit length of any code */
+
+local int huft_build(b, n, s, d, e, t, m, hp, hn, v)
+uIntf *b;               /* code lengths in bits (all assumed <= BMAX) */
+uInt n;                 /* number of codes (assumed <= 288) */
+uInt s;                 /* number of simple-valued codes (0..s-1) */
+const uIntf *d;         /* list of base values for non-simple codes */
+const uIntf *e;         /* list of extra bits for non-simple codes */
+inflate_huft * FAR *t;  /* result: starting table */
+uIntf *m;               /* maximum lookup bits, returns actual */
+inflate_huft *hp;       /* space for trees */
+uInt *hn;               /* hufts used in space */
+uIntf *v;               /* working area: values in order of bit length */
+/* Given a list of code lengths and a maximum table size, make a set of
+   tables to decode that set of codes.  Return Z_OK on success, Z_BUF_ERROR
+   if the given code set is incomplete (the tables are still built in this
+   case), Z_DATA_ERROR if the input is invalid (an over-subscribed set of
+   lengths), or Z_MEM_ERROR if not enough memory. */
+{
+
+  uInt a;                       /* counter for codes of length k */
+  uInt c[BMAX+1];               /* bit length count table */
+  uInt f;                       /* i repeats in table every f entries */
+  int g;                        /* maximum code length */
+  int h;                        /* table level */
+  register uInt i;              /* counter, current code */
+  register uInt j;              /* counter */
+  register int k;               /* number of bits in current code */
+  int l;                        /* bits per table (returned in m) */
+  uInt mask;                    /* (1 << w) - 1, to avoid cc -O bug on HP */
+  register uIntf *p;            /* pointer into c[], b[], or v[] */
+  inflate_huft *q;              /* points to current table */
+  struct inflate_huft_s r;      /* table entry for structure assignment */
+  inflate_huft *u[BMAX];        /* table stack */
+  register int w;               /* bits before this table == (l * h) */
+  uInt x[BMAX+1];               /* bit offsets, then code stack */
+  uIntf *xp;                    /* pointer into x */
+  int y;                        /* number of dummy codes added */
+  uInt z;                       /* number of entries in current table */
+
+
+  /* Generate counts for each bit length */
+  p = c;
+#define C0 *p++ = 0;
+#define C2 C0 C0 C0 C0
+#define C4 C2 C2 C2 C2
+  C4                            /* clear c[]--assume BMAX+1 is 16 */
+  p = b;  i = n;
+  do {
+    c[*p++]++;                  /* assume all entries <= BMAX */
+  } while (--i);
+  if (c[0] == n)                /* null input--all zero length codes */
+  {
+    *t = (inflate_huft *)Z_NULL;
+    *m = 0;
+    return Z_OK;
+  }
+
+
+  /* Find minimum and maximum length, bound *m by those */
+  l = *m;
+  for (j = 1; j <= BMAX; j++)
+    if (c[j])
+      break;
+  k = j;                        /* minimum code length */
+  if ((uInt)l < j)
+    l = j;
+  for (i = BMAX; i; i--)
+    if (c[i])
+      break;
+  g = i;                        /* maximum code length */
+  if ((uInt)l > i)
+    l = i;
+  *m = l;
+
+
+  /* Adjust last length count to fill out codes, if needed */
+  for (y = 1 << j; j < i; j++, y <<= 1)
+    if ((y -= c[j]) < 0)
+      return Z_DATA_ERROR;
+  if ((y -= c[i]) < 0)
+    return Z_DATA_ERROR;
+  c[i] += y;
+
+
+  /* Generate starting offsets into the value table for each length */
+  x[1] = j = 0;
+  p = c + 1;  xp = x + 2;
+  while (--i) {                 /* note that i == g from above */
+    *xp++ = (j += *p++);
+  }
+
+
+  /* Make a table of values in order of bit lengths */
+  p = b;  i = 0;
+  do {
+    if ((j = *p++) != 0)
+      v[x[j]++] = i;
+  } while (++i < n);
+  n = x[g];                     /* set n to length of v */
+
+
+  /* Generate the Huffman codes and for each, make the table entries */
+  x[0] = i = 0;                 /* first Huffman code is zero */
+  p = v;                        /* grab values in bit order */
+  h = -1;                       /* no tables yet--level -1 */
+  w = -l;                       /* bits decoded == (l * h) */
+  u[0] = (inflate_huft *)Z_NULL;        /* just to keep compilers happy */
+  q = (inflate_huft *)Z_NULL;   /* ditto */
+  z = 0;                        /* ditto */
+
+  /* go through the bit lengths (k already is bits in shortest code) */
+  for (; k <= g; k++)
+  {
+    a = c[k];
+    while (a--)
+    {
+      /* here i is the Huffman code of length k bits for value *p */
+      /* make tables up to required level */
+      while (k > w + l)
+      {
+        h++;
+        w += l;                 /* previous table always l bits */
+
+        /* compute minimum size table less than or equal to l bits */
+        z = g - w;
+        z = z > (uInt)l ? l : z;        /* table size upper limit */
+        if ((f = 1 << (j = k - w)) > a + 1)     /* try a k-w bit table */
+        {                       /* too few codes for k-w bit table */
+          f -= a + 1;           /* deduct codes from patterns left */
+          xp = c + k;
+          if (j < z)
+            while (++j < z)     /* try smaller tables up to z bits */
+            {
+              if ((f <<= 1) <= *++xp)
+                break;          /* enough codes to use up j bits */
+              f -= *xp;         /* else deduct codes from patterns */
+            }
+        }
+        z = 1 << j;             /* table entries for j-bit table */
+
+        /* allocate new table */
+        if (*hn + z > MANY)     /* (note: doesn't matter for fixed) */
+          return Z_MEM_ERROR;   /* not enough memory */
+        u[h] = q = hp + *hn;
+        *hn += z;
+
+        /* connect to last table, if there is one */
+        if (h)
+        {
+          x[h] = i;             /* save pattern for backing up */
+          r.bits = (Byte)l;     /* bits to dump before this table */
+          r.exop = (Byte)j;     /* bits in this table */
+          j = i >> (w - l);
+          r.base = (uInt)(q - u[h-1] - j);   /* offset to this table */
+          u[h-1][j] = r;        /* connect to last table */
+        }
+        else
+          *t = q;               /* first table is returned result */
+      }
+
+      /* set up table entry in r */
+      r.bits = (Byte)(k - w);
+      if (p >= v + n)
+        r.exop = 128 + 64;      /* out of values--invalid code */
+      else if (*p < s)
+      {
+        r.exop = (Byte)(*p < 256 ? 0 : 32 + 64);     /* 256 is end-of-block */
+        r.base = *p++;          /* simple code is just the value */
+      }
+      else
+      {
+        r.exop = (Byte)(e[*p - s] + 16 + 64);/* non-simple--look up in lists */
+        r.base = d[*p++ - s];
+      }
+
+      /* fill code-like entries with r */
+      f = 1 << (k - w);
+      for (j = i >> w; j < z; j += f)
+        q[j] = r;
+
+      /* backwards increment the k-bit code i */
+      for (j = 1 << (k - 1); i & j; j >>= 1)
+        i ^= j;
+      i ^= j;
+
+      /* backup over finished tables */
+      mask = (1 << w) - 1;      /* needed on HP, cc -O bug */
+      while ((i & mask) != x[h])
+      {
+        h--;                    /* don't need to update q */
+        w -= l;
+        mask = (1 << w) - 1;
+      }
+    }
+  }
+
+
+  /* Return Z_BUF_ERROR if we were given an incomplete table */
+  return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
+}
+
+
+int inflate_trees_bits(c, bb, tb, hp, z)
+uIntf *c;               /* 19 code lengths */
+uIntf *bb;              /* bits tree desired/actual depth */
+inflate_huft * FAR *tb; /* bits tree result */
+inflate_huft *hp;       /* space for trees */
+z_streamp z;            /* for messages */
+{
+  int r;
+  uInt hn = 0;          /* hufts used in space */
+  uIntf *v;             /* work area for huft_build */
+
+  if ((v = (uIntf*)ZALLOC(z, 19, sizeof(uInt))) == Z_NULL)
+    return Z_MEM_ERROR;
+  r = huft_build(c, 19, 19, (uIntf*)Z_NULL, (uIntf*)Z_NULL,
+                 tb, bb, hp, &hn, v);
+  if (r == Z_DATA_ERROR)
+    z->msg = (char*)"oversubscribed dynamic bit lengths tree";
+  else if (r == Z_BUF_ERROR || *bb == 0)
+  {
+    z->msg = (char*)"incomplete dynamic bit lengths tree";
+    r = Z_DATA_ERROR;
+  }
+  ZFREE(z, v);
+  return r;
+}
+
+
+int inflate_trees_dynamic(nl, nd, c, bl, bd, tl, td, hp, z)
+uInt nl;                /* number of literal/length codes */
+uInt nd;                /* number of distance codes */
+uIntf *c;               /* that many (total) code lengths */
+uIntf *bl;              /* literal desired/actual bit depth */
+uIntf *bd;              /* distance desired/actual bit depth */
+inflate_huft * FAR *tl; /* literal/length tree result */
+inflate_huft * FAR *td; /* distance tree result */
+inflate_huft *hp;       /* space for trees */
+z_streamp z;            /* for messages */
+{
+  int r;
+  uInt hn = 0;          /* hufts used in space */
+  uIntf *v;             /* work area for huft_build */
+
+  /* allocate work area */
+  if ((v = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
+    return Z_MEM_ERROR;
+
+  /* build literal/length tree */
+  r = huft_build(c, nl, 257, cplens, cplext, tl, bl, hp, &hn, v);
+  if (r != Z_OK || *bl == 0)
+  {
+    if (r == Z_DATA_ERROR)
+      z->msg = (char*)"oversubscribed literal/length tree";
+    else if (r != Z_MEM_ERROR)
+    {
+      z->msg = (char*)"incomplete literal/length tree";
+      r = Z_DATA_ERROR;
+    }
+    ZFREE(z, v);
+    return r;
+  }
+
+  /* build distance tree */
+  r = huft_build(c + nl, nd, 0, cpdist, cpdext, td, bd, hp, &hn, v);
+  if (r != Z_OK || (*bd == 0 && nl > 257))
+  {
+    if (r == Z_DATA_ERROR)
+      z->msg = (char*)"oversubscribed distance tree";
+    else if (r == Z_BUF_ERROR) {
+#ifdef PKZIP_BUG_WORKAROUND
+      r = Z_OK;
+    }
+#else
+      z->msg = (char*)"incomplete distance tree";
+      r = Z_DATA_ERROR;
+    }
+    else if (r != Z_MEM_ERROR)
+    {
+      z->msg = (char*)"empty distance tree with lengths";
+      r = Z_DATA_ERROR;
+    }
+    ZFREE(z, v);
+    return r;
+#endif
+  }
+
+  /* done */
+  ZFREE(z, v);
+  return Z_OK;
+}
+
+
+/* build fixed tables only once--keep them here */
+#ifdef BUILDFIXED
+local int fixed_built = 0;
+#define FIXEDH 544      /* number of hufts used by fixed tables */
+local inflate_huft fixed_mem[FIXEDH];
+local uInt fixed_bl;
+local uInt fixed_bd;
+local inflate_huft *fixed_tl;
+local inflate_huft *fixed_td;
+#else
+#include "inffixed.h"
+#endif
+
+
+int inflate_trees_fixed(bl, bd, tl, td, z)
+uIntf *bl;               /* literal desired/actual bit depth */
+uIntf *bd;               /* distance desired/actual bit depth */
+inflate_huft * FAR *tl;  /* literal/length tree result */
+inflate_huft * FAR *td;  /* distance tree result */
+z_streamp z;             /* for memory allocation */
+{
+#ifdef BUILDFIXED
+  /* build fixed tables if not already */
+  if (!fixed_built)
+  {
+    int k;              /* temporary variable */
+    uInt f = 0;         /* number of hufts used in fixed_mem */
+    uIntf *c;           /* length list for huft_build */
+    uIntf *v;           /* work area for huft_build */
+
+    /* allocate memory */
+    if ((c = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
+      return Z_MEM_ERROR;
+    if ((v = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
+    {
+      ZFREE(z, c);
+      return Z_MEM_ERROR;
+    }
+
+    /* literal table */
+    for (k = 0; k < 144; k++)
+      c[k] = 8;
+    for (; k < 256; k++)
+      c[k] = 9;
+    for (; k < 280; k++)
+      c[k] = 7;
+    for (; k < 288; k++)
+      c[k] = 8;
+    fixed_bl = 9;
+    huft_build(c, 288, 257, cplens, cplext, &fixed_tl, &fixed_bl,
+               fixed_mem, &f, v);
+
+    /* distance table */
+    for (k = 0; k < 30; k++)
+      c[k] = 5;
+    fixed_bd = 5;
+    huft_build(c, 30, 0, cpdist, cpdext, &fixed_td, &fixed_bd,
+               fixed_mem, &f, v);
+
+    /* done */
+    ZFREE(z, v);
+    ZFREE(z, c);
+    fixed_built = 1;
+  }
+#endif
+  *bl = fixed_bl;
+  *bd = fixed_bd;
+  *tl = fixed_tl;
+  *td = fixed_td;
+  return Z_OK;
+}
diff -druN linux-noipsec/net/ipsec/zlib/inftrees.h linux/net/ipsec/zlib/inftrees.h
--- linux-noipsec/net/ipsec/zlib/inftrees.h     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/inftrees.h     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,63 @@
+/* inftrees.h -- header to use inftrees.c
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* Huffman code lookup table entry--this entry is four bytes for machines
+   that have 16-bit pointers (e.g. PC's in the small or medium model). */
+
+#ifndef _INFTREES_H
+#define _INFTREES_H
+
+typedef struct inflate_huft_s FAR inflate_huft;
+
+struct inflate_huft_s {
+  union {
+    struct {
+      Byte Exop;        /* number of extra bits or operation */
+      Byte Bits;        /* number of bits in this code or subcode */
+    } what;
+    uInt pad;           /* pad structure to a power of 2 (4 bytes for */
+  } word;               /*  16-bit, 8 bytes for 32-bit int's) */
+  uInt base;            /* literal, length base, distance base,
+                           or table offset */
+};
+
+/* Maximum size of dynamic tree.  The maximum found in a long but non-
+   exhaustive search was 1004 huft structures (850 for length/literals
+   and 154 for distances, the latter actually the result of an
+   exhaustive search).  The actual maximum is not known, but the
+   value below is more than safe. */
+#define MANY 1440
+
+extern int inflate_trees_bits OF((
+    uIntf *,                    /* 19 code lengths */
+    uIntf *,                    /* bits tree desired/actual depth */
+    inflate_huft * FAR *,       /* bits tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp));                /* for messages */
+
+extern int inflate_trees_dynamic OF((
+    uInt,                       /* number of literal/length codes */
+    uInt,                       /* number of distance codes */
+    uIntf *,                    /* that many (total) code lengths */
+    uIntf *,                    /* literal desired/actual bit depth */
+    uIntf *,                    /* distance desired/actual bit depth */
+    inflate_huft * FAR *,       /* literal/length tree result */
+    inflate_huft * FAR *,       /* distance tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp));                /* for messages */
+
+extern int inflate_trees_fixed OF((
+    uIntf *,                    /* literal desired/actual bit depth */
+    uIntf *,                    /* distance desired/actual bit depth */
+    inflate_huft * FAR *,       /* literal/length tree result */
+    inflate_huft * FAR *,       /* distance tree result */
+    z_streamp));                /* for memory allocation */
+
+#endif /* _INFTREES_H */
diff -druN linux-noipsec/net/ipsec/zlib/infutil.c linux/net/ipsec/zlib/infutil.c
--- linux-noipsec/net/ipsec/zlib/infutil.c      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/infutil.c      Fri Sep 29 20:51:34 2000
@@ -0,0 +1,87 @@
+/* inflate_util.c -- data and routines common to blocks and codes
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include "zutil.h"
+#include "infblock.h"
+#include "inftrees.h"
+#include "infcodes.h"
+#include "infutil.h"
+
+struct inflate_codes_state {int dummy;}; /* for buggy compilers */
+
+/* And'ing with mask[n] masks the lower n bits */
+uInt inflate_mask[17] = {
+    0x0000,
+    0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
+    0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
+};
+
+
+/* copy as much as possible from the sliding window to the output area */
+int inflate_flush(s, z, r)
+inflate_blocks_statef *s;
+z_streamp z;
+int r;
+{
+  uInt n;
+  Bytef *p;
+  Bytef *q;
+
+  /* local copies of source and destination pointers */
+  p = z->next_out;
+  q = s->read;
+
+  /* compute number of bytes to copy as far as end of window */
+  n = (uInt)((q <= s->write ? s->write : s->end) - q);
+  if (n > z->avail_out) n = z->avail_out;
+  if (n && r == Z_BUF_ERROR) r = Z_OK;
+
+  /* update counters */
+  z->avail_out -= n;
+  z->total_out += n;
+
+  /* update check information */
+  if (s->checkfn != Z_NULL)
+    z->adler = s->check = (*s->checkfn)(s->check, q, n);
+
+  /* copy as far as end of window */
+  zmemcpy(p, q, n);
+  p += n;
+  q += n;
+
+  /* see if more to copy at beginning of window */
+  if (q == s->end)
+  {
+    /* wrap pointers */
+    q = s->window;
+    if (s->write == s->end)
+      s->write = s->window;
+
+    /* compute bytes to copy */
+    n = (uInt)(s->write - q);
+    if (n > z->avail_out) n = z->avail_out;
+    if (n && r == Z_BUF_ERROR) r = Z_OK;
+
+    /* update counters */
+    z->avail_out -= n;
+    z->total_out += n;
+
+    /* update check information */
+    if (s->checkfn != Z_NULL)
+      z->adler = s->check = (*s->checkfn)(s->check, q, n);
+
+    /* copy */
+    zmemcpy(p, q, n);
+    p += n;
+    q += n;
+  }
+
+  /* update pointers */
+  z->next_out = p;
+  s->read = q;
+
+  /* done */
+  return r;
+}
diff -druN linux-noipsec/net/ipsec/zlib/infutil.h linux/net/ipsec/zlib/infutil.h
--- linux-noipsec/net/ipsec/zlib/infutil.h      Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/infutil.h      Fri Sep 29 20:51:34 2000
@@ -0,0 +1,98 @@
+/* infutil.h -- types and macros common to blocks and codes
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFUTIL_H
+#define _INFUTIL_H
+
+typedef enum {
+      TYPE,     /* get type bits (3, including end bit) */
+      LENS,     /* get lengths for stored */
+      STORED,   /* processing stored block */
+      TABLE,    /* get table lengths */
+      BTREE,    /* get bit lengths tree for a dynamic block */
+      DTREE,    /* get length, distance trees for a dynamic block */
+      CODES,    /* processing fixed or dynamic block */
+      DRY,      /* output remaining window bytes */
+      DONE,     /* finished last block, done */
+      BAD}      /* got a data error--stuck here */
+inflate_block_mode;
+
+/* inflate blocks semi-private state */
+struct inflate_blocks_state {
+
+  /* mode */
+  inflate_block_mode  mode;     /* current inflate_block mode */
+
+  /* mode dependent information */
+  union {
+    uInt left;          /* if STORED, bytes left to copy */
+    struct {
+      uInt table;               /* table lengths (14 bits) */
+      uInt index;               /* index into blens (or border) */
+      uIntf *blens;             /* bit lengths of codes */
+      uInt bb;                  /* bit length tree depth */
+      inflate_huft *tb;         /* bit length decoding tree */
+    } trees;            /* if DTREE, decoding info for trees */
+    struct {
+      inflate_codes_statef 
+         *codes;
+    } decode;           /* if CODES, current state */
+  } sub;                /* submode */
+  uInt last;            /* true if this block is the last block */
+
+  /* mode independent information */
+  uInt bitk;            /* bits in bit buffer */
+  uLong bitb;           /* bit buffer */
+  inflate_huft *hufts;  /* single malloc for tree space */
+  Bytef *window;        /* sliding window */
+  Bytef *end;           /* one byte after sliding window */
+  Bytef *read;          /* window read pointer */
+  Bytef *write;         /* window write pointer */
+  check_func checkfn;   /* check function */
+  uLong check;          /* check on output */
+
+};
+
+
+/* defines for inflate input/output */
+/*   update pointers and return */
+#define UPDBITS {s->bitb=b;s->bitk=k;}
+#define UPDIN {z->avail_in=n;z->total_in+=p-z->next_in;z->next_in=p;}
+#define UPDOUT {s->write=q;}
+#define UPDATE {UPDBITS UPDIN UPDOUT}
+#define LEAVE {UPDATE return inflate_flush(s,z,r);}
+/*   get bytes and bits */
+#define LOADIN {p=z->next_in;n=z->avail_in;b=s->bitb;k=s->bitk;}
+#define NEEDBYTE {if(n)r=Z_OK;else LEAVE}
+#define NEXTBYTE (n--,*p++)
+#define NEEDBITS(j) {while(k<(j)){NEEDBYTE;b|=((uLong)NEXTBYTE)<<k;k+=8;}}
+#define DUMPBITS(j) {b>>=(j);k-=(j);}
+/*   output bytes */
+#define WAVAIL (uInt)(q<s->read?s->read-q-1:s->end-q)
+#define LOADOUT {q=s->write;m=(uInt)WAVAIL;}
+#define WRAP {if(q==s->end&&s->read!=s->window){q=s->window;m=(uInt)WAVAIL;}}
+#define FLUSH {UPDOUT r=inflate_flush(s,z,r); LOADOUT}
+#define NEEDOUT {if(m==0){WRAP if(m==0){FLUSH WRAP if(m==0) LEAVE}}r=Z_OK;}
+#define OUTBYTE(a) {*q++=(Byte)(a);m--;}
+/*   load local pointers */
+#define LOAD {LOADIN LOADOUT}
+
+/* masks for lower bits (size given to avoid silly warnings with Visual C++) */
+extern uInt inflate_mask[17];
+
+/* copy as much as possible from the sliding window to the output area */
+extern int inflate_flush OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));
+
+struct internal_state      {int dummy;}; /* for buggy compilers */
+
+#endif /* _INFUTIL_H */
diff -druN linux-noipsec/net/ipsec/zlib/match586.S linux/net/ipsec/zlib/match586.S
--- linux-noipsec/net/ipsec/zlib/match586.S     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/match586.S     Fri Sep 29 20:51:34 2000
@@ -0,0 +1,357 @@
+/* match.s -- Pentium-optimized version of longest_match()
+ * Written for zlib 1.1.2
+ * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License.
+ */
+
+#ifndef NO_UNDERLINE
+#define        match_init      _ipcomp_match_init
+#define        longest_match   _ipcomp_longest_match
+#else
+#define match_init     ipcomp_match_init
+#define longest_match  ipcomp_longest_match
+#endif
+
+#define        MAX_MATCH       (258)
+#define        MIN_MATCH       (3)
+#define        MIN_LOOKAHEAD   (MAX_MATCH + MIN_MATCH + 1)
+#define        MAX_MATCH_8     ((MAX_MATCH + 7) & ~7)
+
+/* stack frame offsets */
+
+#define        wmask                   0       /* local copy of s->wmask       */
+#define        window                  4       /* local copy of s->window      */
+#define        windowbestlen           8       /* s->window + bestlen          */
+#define        chainlenscanend         12      /* high word: current chain len */
+                                       /* low word: last bytes sought  */
+#define        scanstart               16      /* first two bytes of string    */
+#define        scanalign               20      /* dword-misalignment of string */
+#define        nicematch               24      /* a good enough match size     */
+#define        bestlen                 28      /* size of best match so far    */
+#define        scan                    32      /* ptr to string wanting match  */
+
+#define        LocalVarsSize           (36)
+/*     saved ebx               36 */
+/*     saved edi               40 */
+/*     saved esi               44 */
+/*     saved ebp               48 */
+/*     return address          52 */
+#define        deflatestate            56      /* the function arguments       */
+#define        curmatch                60
+
+/* Offsets for fields in the deflate_state structure. These numbers
+ * are calculated from the definition of deflate_state, with the
+ * assumption that the compiler will dword-align the fields. (Thus,
+ * changing the definition of deflate_state could easily cause this
+ * program to crash horribly, without so much as a warning at
+ * compile time. Sigh.)
+ */
+#define        dsWSize                 36
+#define        dsWMask                 44
+#define        dsWindow                48
+#define        dsPrev                  56
+#define        dsMatchLen              88
+#define        dsPrevMatch             92
+#define        dsStrStart              100
+#define        dsMatchStart            104
+#define        dsLookahead             108
+#define        dsPrevLen               112
+#define        dsMaxChainLen           116
+#define        dsGoodMatch             132
+#define        dsNiceMatch             136
+
+
+.file "match.S"
+
+.globl match_init, longest_match
+
+.text
+
+/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
+
+longest_match:
+
+/* Save registers that the compiler may be using, and adjust %esp to   */
+/* make room for our stack frame.                                      */
+
+               pushl   %ebp
+               pushl   %edi
+               pushl   %esi
+               pushl   %ebx
+               subl    $LocalVarsSize, %esp
+
+/* Retrieve the function arguments. %ecx will hold cur_match           */
+/* throughout the entire function. %edx will hold the pointer to the   */
+/* deflate_state structure during the function's setup (before         */
+/* entering the main loop).                                            */
+
+               movl    deflatestate(%esp), %edx
+               movl    curmatch(%esp), %ecx
+
+/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;     */
+
+               movl    dsNiceMatch(%edx), %eax
+               movl    dsLookahead(%edx), %ebx
+               cmpl    %eax, %ebx
+               jl      LookaheadLess
+               movl    %eax, %ebx
+LookaheadLess: movl    %ebx, nicematch(%esp)
+
+/* register Bytef *scan = s->window + s->strstart;                     */
+
+               movl    dsWindow(%edx), %esi
+               movl    %esi, window(%esp)
+               movl    dsStrStart(%edx), %ebp
+               lea     (%esi,%ebp), %edi
+               movl    %edi, scan(%esp)
+
+/* Determine how many bytes the scan ptr is off from being             */
+/* dword-aligned.                                                      */
+
+               movl    %edi, %eax
+               negl    %eax
+               andl    $3, %eax
+               movl    %eax, scanalign(%esp)
+
+/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ?                      */
+/*     s->strstart - (IPos)MAX_DIST(s) : NIL;                          */
+
+               movl    dsWSize(%edx), %eax
+               subl    $MIN_LOOKAHEAD, %eax
+               subl    %eax, %ebp
+               jg      LimitPositive
+               xorl    %ebp, %ebp
+LimitPositive:
+
+/* unsigned chain_length = s->max_chain_length;                                */
+/* if (s->prev_length >= s->good_match) {                              */
+/*     chain_length >>= 2;                                             */
+/* }                                                                   */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    dsGoodMatch(%edx), %ebx
+               cmpl    %ebx, %eax
+               movl    dsMaxChainLen(%edx), %ebx
+               jl      LastMatchGood
+               shrl    $2, %ebx
+LastMatchGood:
+
+/* chainlen is decremented once beforehand so that the function can    */
+/* use the sign flag instead of the zero flag for the exit test.       */
+/* It is then shifted into the high word, to make room for the scanend */
+/* scanend value, which it will always accompany.                      */
+
+               decl    %ebx
+               shll    $16, %ebx
+
+/* int best_len = s->prev_length;                                      */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    %eax, bestlen(%esp)
+
+/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
+
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+
+/* register ush scan_start = *(ushf*)scan;                             */
+/* register ush scan_end   = *(ushf*)(scan+best_len-1);                        */
+
+               movw    (%edi), %bx
+               movw    %bx, scanstart(%esp)
+               movw    -1(%edi,%eax), %bx
+               movl    %ebx, chainlenscanend(%esp)
+
+/* Posf *prev = s->prev;                                               */
+/* uInt wmask = s->w_mask;                                             */
+
+               movl    dsPrev(%edx), %edi
+               movl    dsWMask(%edx), %edx
+               mov     %edx, wmask(%esp)
+
+/* Jump into the main loop.                                            */
+
+               jmp     LoopEntry
+
+.balign 16
+
+/* do {
+ *     match = s->window + cur_match;
+ *     if (*(ushf*)(match+best_len-1) != scan_end ||
+ *         *(ushf*)match != scan_start) continue;
+ *     [...]
+ * } while ((cur_match = prev[cur_match & wmask]) > limit
+ *          && --chain_length != 0);
+ *
+ * Here is the inner loop of the function. The function will spend the
+ * majority of its time in this loop, and majority of that time will
+ * be spent in the first ten instructions.
+ *
+ * Within this loop:
+ * %ebx = chainlenscanend - i.e., ((chainlen << 16) | scanend)
+ * %ecx = curmatch
+ * %edx = curmatch & wmask
+ * %esi = windowbestlen - i.e., (window + bestlen)
+ * %edi = prev
+ * %ebp = limit
+ *
+ * Two optimization notes on the choice of instructions:
+ *
+ * The first instruction uses a 16-bit address, which costs an extra,
+ * unpairable cycle. This is cheaper than doing a 32-bit access and
+ * zeroing the high word, due to the 3-cycle misalignment penalty which
+ * would occur half the time. This also turns out to be cheaper than
+ * doing two separate 8-bit accesses, as the memory is so rarely in the
+ * L1 cache.
+ *
+ * The window buffer, however, apparently spends a lot of time in the
+ * cache, and so it is faster to retrieve the word at the end of the
+ * match string with two 8-bit loads. The instructions that test the
+ * word at the beginning of the match string, however, are executed
+ * much less frequently, and there it was cheaper to use 16-bit
+ * instructions, which avoided the necessity of saving off and
+ * subsequently reloading one of the other registers.
+ */
+LookupLoop:
+                                                       /* 1 U & V  */
+               movw    (%edi,%edx,2), %cx              /* 2 U pipe */
+               movl    wmask(%esp), %edx               /* 2 V pipe */
+               cmpl    %ebp, %ecx                      /* 3 U pipe */
+               jbe     LeaveNow                        /* 3 V pipe */
+               subl    $0x00010000, %ebx               /* 4 U pipe */
+               js      LeaveNow                        /* 4 V pipe */
+LoopEntry:     movb    -1(%esi,%ecx), %al              /* 5 U pipe */
+               andl    %ecx, %edx                      /* 5 V pipe */
+               cmpb    %bl, %al                        /* 6 U pipe */
+               jnz     LookupLoop                      /* 6 V pipe */
+               movb    (%esi,%ecx), %ah
+               cmpb    %bh, %ah
+               jnz     LookupLoop
+               movl    window(%esp), %eax
+               movw    (%eax,%ecx), %ax
+               cmpw    scanstart(%esp), %ax
+               jnz     LookupLoop
+
+/* Store the current value of chainlen.                                        */
+
+               movl    %ebx, chainlenscanend(%esp)
+
+/* Point %edi to the string under scrutiny, and %esi to the string we  */
+/* are hoping to match it up with. In actuality, %esi and %edi are     */
+/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is     */
+/* initialized to -(MAX_MATCH_8 - scanalign).                          */
+
+               movl    window(%esp), %esi
+               movl    scan(%esp), %edi
+               addl    %ecx, %esi
+               movl    scanalign(%esp), %eax
+               movl    $(-MAX_MATCH_8), %edx
+               lea     MAX_MATCH_8(%edi,%eax), %edi
+               lea     MAX_MATCH_8(%esi,%eax), %esi
+
+/* Test the strings for equality, 8 bytes at a time. At the end,
+ * adjust %edx so that it is offset to the exact byte that mismatched.
+ *
+ * We already know at this point that the first three bytes of the
+ * strings match each other, and they can be safely passed over before
+ * starting the compare loop. So what this code does is skip over 0-3
+ * bytes, as much as necessary in order to dword-align the %edi
+ * pointer. (%esi will still be misaligned three times out of four.)
+ *
+ * It should be confessed that this loop usually does not represent
+ * much of the total running time. Replacing it with a more
+ * straightforward "rep cmpsb" would not drastically degrade
+ * performance.
+ */
+LoopCmps:
+               movl    (%esi,%edx), %eax
+               movl    (%edi,%edx), %ebx
+               xorl    %ebx, %eax
+               jnz     LeaveLoopCmps
+               movl    4(%esi,%edx), %eax
+               movl    4(%edi,%edx), %ebx
+               xorl    %ebx, %eax
+               jnz     LeaveLoopCmps4
+               addl    $8, %edx
+               jnz     LoopCmps
+               jmp     LenMaximum
+LeaveLoopCmps4:        addl    $4, %edx
+LeaveLoopCmps: testl   $0x0000FFFF, %eax
+               jnz     LenLower
+               addl    $2, %edx
+               shrl    $16, %eax
+LenLower:      subb    $1, %al
+               adcl    $0, %edx
+
+/* Calculate the length of the match. If it is longer than MAX_MATCH,  */
+/* then automatically accept it as the best possible match and leave.  */
+
+               lea     (%edi,%edx), %eax
+               movl    scan(%esp), %edi
+               subl    %edi, %eax
+               cmpl    $MAX_MATCH, %eax
+               jge     LenMaximum
+
+/* If the length of the match is not longer than the best match we     */
+/* have so far, then forget it and return to the lookup loop.          */
+
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               cmpl    %ebx, %eax
+               jg      LongerMatch
+               movl    chainlenscanend(%esp), %ebx
+               movl    windowbestlen(%esp), %esi
+               movl    dsPrev(%edx), %edi
+               movl    wmask(%esp), %edx
+               andl    %ecx, %edx
+               jmp     LookupLoop
+
+/*         s->match_start = cur_match;                                 */
+/*         best_len = len;                                             */
+/*         if (len >= nice_match) break;                               */
+/*         scan_end = *(ushf*)(scan+best_len-1);                       */
+
+LongerMatch:   movl    nicematch(%esp), %ebx
+               movl    %eax, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+               cmpl    %ebx, %eax
+               jge     LeaveNow
+               movl    window(%esp), %esi
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+               movl    chainlenscanend(%esp), %ebx
+               movw    -1(%edi,%eax), %bx
+               movl    dsPrev(%edx), %edi
+               movl    %ebx, chainlenscanend(%esp)
+               movl    wmask(%esp), %edx
+               andl    %ecx, %edx
+               jmp     LookupLoop
+
+/* Accept the current string, with the maximum possible length.                */
+
+LenMaximum:    movl    deflatestate(%esp), %edx
+               movl    $MAX_MATCH, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+
+/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len;          */
+/* return s->lookahead;                                                        */
+
+LeaveNow:
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               movl    dsLookahead(%edx), %eax
+               cmpl    %eax, %ebx
+               jg      LookaheadRet
+               movl    %ebx, %eax
+LookaheadRet:
+
+/* Restore the stack and return from whence we came.                   */
+
+               addl    $LocalVarsSize, %esp
+               popl    %ebx
+               popl    %esi
+               popl    %edi
+               popl    %ebp
+match_init:    ret
diff -druN linux-noipsec/net/ipsec/zlib/match686.S linux/net/ipsec/zlib/match686.S
--- linux-noipsec/net/ipsec/zlib/match686.S     Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/match686.S     Fri Oct 27 05:35:16 2000
@@ -0,0 +1,330 @@
+/* match.s -- Pentium-Pro-optimized version of longest_match()
+ * Written for zlib 1.1.2
+ * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License.
+ */
+
+#ifndef NO_UNDERLINE
+#define        match_init      _ipcomp_match_init
+#define        longest_match   _ipcomp_longest_match
+#else
+#define match_init     ipcomp_match_init
+#define longest_match  ipcomp_longest_match
+#endif
+
+#define        MAX_MATCH       (258)
+#define        MIN_MATCH       (3)
+#define        MIN_LOOKAHEAD   (MAX_MATCH + MIN_MATCH + 1)
+#define        MAX_MATCH_8     ((MAX_MATCH + 7) & ~7)
+
+/* stack frame offsets */
+
+#define        chainlenwmask           0       /* high word: current chain len */
+                                       /* low word: s->wmask           */
+#define        window                  4       /* local copy of s->window      */
+#define        windowbestlen           8       /* s->window + bestlen          */
+#define        scanstart               16      /* first two bytes of string    */
+#define        scanend                 12      /* last two bytes of string     */
+#define        scanalign               20      /* dword-misalignment of string */
+#define        nicematch               24      /* a good enough match size     */
+#define        bestlen                 28      /* size of best match so far    */
+#define        scan                    32      /* ptr to string wanting match  */
+
+#define        LocalVarsSize           (36)
+/*     saved ebx               36 */
+/*     saved edi               40 */
+/*     saved esi               44 */
+/*     saved ebp               48 */
+/*     return address          52 */
+#define        deflatestate            56      /* the function arguments       */
+#define        curmatch                60
+
+/* Offsets for fields in the deflate_state structure. These numbers
+ * are calculated from the definition of deflate_state, with the
+ * assumption that the compiler will dword-align the fields. (Thus,
+ * changing the definition of deflate_state could easily cause this
+ * program to crash horribly, without so much as a warning at
+ * compile time. Sigh.)
+ */
+#define        dsWSize                 36
+#define        dsWMask                 44
+#define        dsWindow                48
+#define        dsPrev                  56
+#define        dsMatchLen              88
+#define        dsPrevMatch             92
+#define        dsStrStart              100
+#define        dsMatchStart            104
+#define        dsLookahead             108
+#define        dsPrevLen               112
+#define        dsMaxChainLen           116
+#define        dsGoodMatch             132
+#define        dsNiceMatch             136
+
+
+.file "match.S"
+
+.globl match_init, longest_match
+
+.text
+
+/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
+
+longest_match:
+
+/* Save registers that the compiler may be using, and adjust %esp to   */
+/* make room for our stack frame.                                      */
+
+               pushl   %ebp
+               pushl   %edi
+               pushl   %esi
+               pushl   %ebx
+               subl    $LocalVarsSize, %esp
+
+/* Retrieve the function arguments. %ecx will hold cur_match           */
+/* throughout the entire function. %edx will hold the pointer to the   */
+/* deflate_state structure during the function's setup (before         */
+/* entering the main loop).                                            */
+
+               movl    deflatestate(%esp), %edx
+               movl    curmatch(%esp), %ecx
+
+/* uInt wmask = s->w_mask;                                             */
+/* unsigned chain_length = s->max_chain_length;                                */
+/* if (s->prev_length >= s->good_match) {                              */
+/*     chain_length >>= 2;                                             */
+/* }                                                                   */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    dsGoodMatch(%edx), %ebx
+               cmpl    %ebx, %eax
+               movl    dsWMask(%edx), %eax
+               movl    dsMaxChainLen(%edx), %ebx
+               jl      LastMatchGood
+               shrl    $2, %ebx
+LastMatchGood:
+
+/* chainlen is decremented once beforehand so that the function can    */
+/* use the sign flag instead of the zero flag for the exit test.       */
+/* It is then shifted into the high word, to make room for the wmask   */
+/* value, which it will always accompany.                              */
+
+               decl    %ebx
+               shll    $16, %ebx
+               orl     %eax, %ebx
+               movl    %ebx, chainlenwmask(%esp)
+
+/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;     */
+
+               movl    dsNiceMatch(%edx), %eax
+               movl    dsLookahead(%edx), %ebx
+               cmpl    %eax, %ebx
+               jl      LookaheadLess
+               movl    %eax, %ebx
+LookaheadLess: movl    %ebx, nicematch(%esp)
+
+/* register Bytef *scan = s->window + s->strstart;                     */
+
+               movl    dsWindow(%edx), %esi
+               movl    %esi, window(%esp)
+               movl    dsStrStart(%edx), %ebp
+               lea     (%esi,%ebp), %edi
+               movl    %edi, scan(%esp)
+
+/* Determine how many bytes the scan ptr is off from being             */
+/* dword-aligned.                                                      */
+
+               movl    %edi, %eax
+               negl    %eax
+               andl    $3, %eax
+               movl    %eax, scanalign(%esp)
+
+/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ?                      */
+/*     s->strstart - (IPos)MAX_DIST(s) : NIL;                          */
+
+               movl    dsWSize(%edx), %eax
+               subl    $MIN_LOOKAHEAD, %eax
+               subl    %eax, %ebp
+               jg      LimitPositive
+               xorl    %ebp, %ebp
+LimitPositive:
+
+/* int best_len = s->prev_length;                                      */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    %eax, bestlen(%esp)
+
+/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
+
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+
+/* register ush scan_start = *(ushf*)scan;                             */
+/* register ush scan_end   = *(ushf*)(scan+best_len-1);                        */
+/* Posf *prev = s->prev;                                               */
+
+               movzwl  (%edi), %ebx
+               movl    %ebx, scanstart(%esp)
+               movzwl  -1(%edi,%eax), %ebx
+               movl    %ebx, scanend(%esp)
+               movl    dsPrev(%edx), %edi
+
+/* Jump into the main loop.                                            */
+
+               movl    chainlenwmask(%esp), %edx
+               jmp     LoopEntry
+
+.balign 16
+
+/* do {
+ *     match = s->window + cur_match;
+ *     if (*(ushf*)(match+best_len-1) != scan_end ||
+ *         *(ushf*)match != scan_start) continue;
+ *     [...]
+ * } while ((cur_match = prev[cur_match & wmask]) > limit
+ *          && --chain_length != 0);
+ *
+ * Here is the inner loop of the function. The function will spend the
+ * majority of its time in this loop, and majority of that time will
+ * be spent in the first ten instructions.
+ *
+ * Within this loop:
+ * %ebx = scanend
+ * %ecx = curmatch
+ * %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
+ * %esi = windowbestlen - i.e., (window + bestlen)
+ * %edi = prev
+ * %ebp = limit
+ */
+LookupLoop:
+               andl    %edx, %ecx
+               movzwl  (%edi,%ecx,2), %ecx
+               cmpl    %ebp, %ecx
+               jbe     LeaveNow
+               subl    $0x00010000, %edx
+               js      LeaveNow
+LoopEntry:     movzwl  -1(%esi,%ecx), %eax
+               cmpl    %ebx, %eax
+               jnz     LookupLoop
+               movl    window(%esp), %eax
+               movzwl  (%eax,%ecx), %eax
+               cmpl    scanstart(%esp), %eax
+               jnz     LookupLoop
+
+/* Store the current value of chainlen.                                        */
+
+               movl    %edx, chainlenwmask(%esp)
+
+/* Point %edi to the string under scrutiny, and %esi to the string we  */
+/* are hoping to match it up with. In actuality, %esi and %edi are     */
+/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is     */
+/* initialized to -(MAX_MATCH_8 - scanalign).                          */
+
+               movl    window(%esp), %esi
+               movl    scan(%esp), %edi
+               addl    %ecx, %esi
+               movl    scanalign(%esp), %eax
+               movl    $(-MAX_MATCH_8), %edx
+               lea     MAX_MATCH_8(%edi,%eax), %edi
+               lea     MAX_MATCH_8(%esi,%eax), %esi
+
+/* Test the strings for equality, 8 bytes at a time. At the end,
+ * adjust %edx so that it is offset to the exact byte that mismatched.
+ *
+ * We already know at this point that the first three bytes of the
+ * strings match each other, and they can be safely passed over before
+ * starting the compare loop. So what this code does is skip over 0-3
+ * bytes, as much as necessary in order to dword-align the %edi
+ * pointer. (%esi will still be misaligned three times out of four.)
+ *
+ * It should be confessed that this loop usually does not represent
+ * much of the total running time. Replacing it with a more
+ * straightforward "rep cmpsb" would not drastically degrade
+ * performance.
+ */
+LoopCmps:
+               movl    (%esi,%edx), %eax
+               xorl    (%edi,%edx), %eax
+               jnz     LeaveLoopCmps
+               movl    4(%esi,%edx), %eax
+               xorl    4(%edi,%edx), %eax
+               jnz     LeaveLoopCmps4
+               addl    $8, %edx
+               jnz     LoopCmps
+               jmp     LenMaximum
+LeaveLoopCmps4:        addl    $4, %edx
+LeaveLoopCmps: testl   $0x0000FFFF, %eax
+               jnz     LenLower
+               addl    $2, %edx
+               shrl    $16, %eax
+LenLower:      subb    $1, %al
+               adcl    $0, %edx
+
+/* Calculate the length of the match. If it is longer than MAX_MATCH,  */
+/* then automatically accept it as the best possible match and leave.  */
+
+               lea     (%edi,%edx), %eax
+               movl    scan(%esp), %edi
+               subl    %edi, %eax
+               cmpl    $MAX_MATCH, %eax
+               jge     LenMaximum
+
+/* If the length of the match is not longer than the best match we     */
+/* have so far, then forget it and return to the lookup loop.          */
+
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               cmpl    %ebx, %eax
+               jg      LongerMatch
+               movl    windowbestlen(%esp), %esi
+               movl    dsPrev(%edx), %edi
+               movl    scanend(%esp), %ebx
+               movl    chainlenwmask(%esp), %edx
+               jmp     LookupLoop
+
+/*         s->match_start = cur_match;                                 */
+/*         best_len = len;                                             */
+/*         if (len >= nice_match) break;                               */
+/*         scan_end = *(ushf*)(scan+best_len-1);                       */
+
+LongerMatch:   movl    nicematch(%esp), %ebx
+               movl    %eax, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+               cmpl    %ebx, %eax
+               jge     LeaveNow
+               movl    window(%esp), %esi
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+               movzwl  -1(%edi,%eax), %ebx
+               movl    dsPrev(%edx), %edi
+               movl    %ebx, scanend(%esp)
+               movl    chainlenwmask(%esp), %edx
+               jmp     LookupLoop
+
+/* Accept the current string, with the maximum possible length.                */
+
+LenMaximum:    movl    deflatestate(%esp), %edx
+               movl    $MAX_MATCH, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+
+/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len;          */
+/* return s->lookahead;                                                        */
+
+LeaveNow:
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               movl    dsLookahead(%edx), %eax
+               cmpl    %eax, %ebx
+               jg      LookaheadRet
+               movl    %ebx, %eax
+LookaheadRet:
+
+/* Restore the stack and return from whence we came.                   */
+
+               addl    $LocalVarsSize, %esp
+               popl    %ebx
+               popl    %esi
+               popl    %edi
+               popl    %ebp
+match_init:    ret
diff -druN linux-noipsec/net/ipsec/zlib/trees.c linux/net/ipsec/zlib/trees.c
--- linux-noipsec/net/ipsec/zlib/trees.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/trees.c        Fri Sep 29 20:51:34 2000
@@ -0,0 +1,1214 @@
+/* trees.c -- output deflated data using Huffman coding
+ * Copyright (C) 1995-1998 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/*
+ *  ALGORITHM
+ *
+ *      The "deflation" process uses several Huffman trees. The more
+ *      common source values are represented by shorter bit sequences.
+ *
+ *      Each code tree is stored in a compressed form which is itself
+ * a Huffman encoding of the lengths of all the code strings (in
+ * ascending order by source values).  The actual code strings are
+ * reconstructed from the lengths in the inflate process, as described
+ * in the deflate specification.
+ *
+ *  REFERENCES
+ *
+ *      Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
+ *      Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
+ *
+ *      Storer, James A.
+ *          Data Compression:  Methods and Theory, pp. 49-50.
+ *          Computer Science Press, 1988.  ISBN 0-7167-8156-5.
+ *
+ *      Sedgewick, R.
+ *          Algorithms, p290.
+ *          Addison-Wesley, 1983. ISBN 0-201-06672-6.
+ */
+
+/* @(#) $Id$ */
+
+/* #define GEN_TREES_H */
+
+#include "deflate.h"
+
+#ifdef DEBUG
+#  include <ctype.h>
+#endif
+
+/* ===========================================================================
+ * Constants
+ */
+
+#define MAX_BL_BITS 7
+/* Bit length codes must not exceed MAX_BL_BITS bits */
+
+#define END_BLOCK 256
+/* end of block literal code */
+
+#define REP_3_6      16
+/* repeat previous bit length 3-6 times (2 bits of repeat count) */
+
+#define REPZ_3_10    17
+/* repeat a zero length 3-10 times  (3 bits of repeat count) */
+
+#define REPZ_11_138  18
+/* repeat a zero length 11-138 times  (7 bits of repeat count) */
+
+local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
+   = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};
+
+local const int extra_dbits[D_CODES] /* extra bits for each distance code */
+   = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
+
+local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
+   = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};
+
+local const uch bl_order[BL_CODES]
+   = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
+/* The lengths of the bit length codes are sent in order of decreasing
+ * probability, to avoid transmitting the lengths for unused bit length codes.
+ */
+
+#define Buf_size (8 * 2*sizeof(char))
+/* Number of bits used within bi_buf. (bi_buf might be implemented on
+ * more than 16 bits on some systems.)
+ */
+
+/* ===========================================================================
+ * Local data. These are initialized only once.
+ */
+
+#define DIST_CODE_LEN  512 /* see definition of array dist_code below */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+/* non ANSI compilers may not accept trees.h */
+
+local ct_data static_ltree[L_CODES+2];
+/* The static literal tree. Since the bit lengths are imposed, there is no
+ * need for the L_CODES extra codes used during heap construction. However
+ * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
+ * below).
+ */
+
+local ct_data static_dtree[D_CODES];
+/* The static distance tree. (Actually a trivial tree since all codes use
+ * 5 bits.)
+ */
+
+uch _dist_code[DIST_CODE_LEN];
+/* Distance codes. The first 256 values correspond to the distances
+ * 3 .. 258, the last 256 values correspond to the top 8 bits of
+ * the 15 bit distances.
+ */
+
+uch _length_code[MAX_MATCH-MIN_MATCH+1];
+/* length code for each normalized match length (0 == MIN_MATCH) */
+
+local int base_length[LENGTH_CODES];
+/* First normalized length for each code (0 = MIN_MATCH) */
+
+local int base_dist[D_CODES];
+/* First normalized distance for each code (0 = distance of 1) */
+
+#else
+#  include "trees.h"
+#endif /* GEN_TREES_H */
+
+struct static_tree_desc_s {
+    const ct_data *static_tree;  /* static tree or NULL */
+    const intf *extra_bits;      /* extra bits for each code or NULL */
+    int     extra_base;          /* base index for extra_bits */
+    int     elems;               /* max number of elements in the tree */
+    int     max_length;          /* max bit length for the codes */
+};
+
+local static_tree_desc  static_l_desc =
+{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
+
+local static_tree_desc  static_d_desc =
+{static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS};
+
+local static_tree_desc  static_bl_desc =
+{(const ct_data *)0, extra_blbits, 0,   BL_CODES, MAX_BL_BITS};
+
+/* ===========================================================================
+ * Local (static) routines in this file.
+ */
+
+local void tr_static_init OF((void));
+local void init_block     OF((deflate_state *s));
+local void pqdownheap     OF((deflate_state *s, ct_data *tree, int k));
+local void gen_bitlen     OF((deflate_state *s, tree_desc *desc));
+local void gen_codes      OF((ct_data *tree, int max_code, ushf *bl_count));
+local void build_tree     OF((deflate_state *s, tree_desc *desc));
+local void scan_tree      OF((deflate_state *s, ct_data *tree, int max_code));
+local void send_tree      OF((deflate_state *s, ct_data *tree, int max_code));
+local int  build_bl_tree  OF((deflate_state *s));
+local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
+                              int blcodes));
+local void compress_block OF((deflate_state *s, const ct_data *ltree,
+                              const ct_data *dtree));
+local void set_data_type  OF((deflate_state *s));
+local unsigned bi_reverse OF((unsigned value, int length));
+local void bi_windup      OF((deflate_state *s));
+local void bi_flush       OF((deflate_state *s));
+local void copy_block     OF((deflate_state *s, charf *buf, unsigned len,
+                              int header));
+
+#ifdef GEN_TREES_H
+local void gen_trees_header OF((void));
+#endif
+
+#ifndef DEBUG
+#  define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
+   /* Send a code of the given tree. c and tree must not have side effects */
+
+#else /* DEBUG */
+#  define send_code(s, c, tree) \
+     { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
+       send_bits(s, tree[c].Code, tree[c].Len); }
+#endif
+
+/* ===========================================================================
+ * Output a short LSB first on the stream.
+ * IN assertion: there is enough room in pendingBuf.
+ */
+#define put_short(s, w) { \
+    put_byte(s, (uch)((w) & 0xff)); \
+    put_byte(s, (uch)((ush)(w) >> 8)); \
+}
+
+/* ===========================================================================
+ * Send a value on a given number of bits.
+ * IN assertion: length <= 16 and value fits in length bits.
+ */
+#ifdef DEBUG
+local void send_bits      OF((deflate_state *s, int value, int length));
+
+local void send_bits(s, value, length)
+    deflate_state *s;
+    int value;  /* value to send */
+    int length; /* number of bits */
+{
+    Tracevv((stderr," l %2d v %4x ", length, value));
+    Assert(length > 0 && length <= 15, "invalid length");
+    s->bits_sent += (ulg)length;
+
+    /* If not enough room in bi_buf, use (valid) bits from bi_buf and
+     * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
+     * unused bits in value.
+     */
+    if (s->bi_valid > (int)Buf_size - length) {
+        s->bi_buf |= (value << s->bi_valid);
+        put_short(s, s->bi_buf);
+        s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
+        s->bi_valid += length - Buf_size;
+    } else {
+        s->bi_buf |= value << s->bi_valid;
+        s->bi_valid += length;
+    }
+}
+#else /* !DEBUG */
+
+#define send_bits(s, value, length) \
+{ int len = length;\
+  if (s->bi_valid > (int)Buf_size - len) {\
+    int val = value;\
+    s->bi_buf |= (val << s->bi_valid);\
+    put_short(s, s->bi_buf);\
+    s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
+    s->bi_valid += len - Buf_size;\
+  } else {\
+    s->bi_buf |= (value) << s->bi_valid;\
+    s->bi_valid += len;\
+  }\
+}
+#endif /* DEBUG */
+
+
+#define MAX(a,b) (a >= b ? a : b)
+/* the arguments must not have side effects */
+
+/* ===========================================================================
+ * Initialize the various 'constant' tables.
+ */
+local void tr_static_init()
+{
+#if defined(GEN_TREES_H) || !defined(STDC)
+    static int static_init_done = 0;
+    int n;        /* iterates over tree elements */
+    int bits;     /* bit counter */
+    int length;   /* length value */
+    int code;     /* code value */
+    int dist;     /* distance index */
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    if (static_init_done) return;
+
+    /* For some embedded targets, global variables are not initialized: */
+    static_l_desc.static_tree = static_ltree;
+    static_l_desc.extra_bits = extra_lbits;
+    static_d_desc.static_tree = static_dtree;
+    static_d_desc.extra_bits = extra_dbits;
+    static_bl_desc.extra_bits = extra_blbits;
+
+    /* Initialize the mapping length (0..255) -> length code (0..28) */
+    length = 0;
+    for (code = 0; code < LENGTH_CODES-1; code++) {
+        base_length[code] = length;
+        for (n = 0; n < (1<<extra_lbits[code]); n++) {
+            _length_code[length++] = (uch)code;
+        }
+    }
+    Assert (length == 256, "tr_static_init: length != 256");
+    /* Note that the length 255 (match length 258) can be represented
+     * in two different ways: code 284 + 5 bits or code 285, so we
+     * overwrite length_code[255] to use the best encoding:
+     */
+    _length_code[length-1] = (uch)code;
+
+    /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+    dist = 0;
+    for (code = 0 ; code < 16; code++) {
+        base_dist[code] = dist;
+        for (n = 0; n < (1<<extra_dbits[code]); n++) {
+            _dist_code[dist++] = (uch)code;
+        }
+    }
+    Assert (dist == 256, "tr_static_init: dist != 256");
+    dist >>= 7; /* from now on, all distances are divided by 128 */
+    for ( ; code < D_CODES; code++) {
+        base_dist[code] = dist << 7;
+        for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
+            _dist_code[256 + dist++] = (uch)code;
+        }
+    }
+    Assert (dist == 256, "tr_static_init: 256+dist != 512");
+
+    /* Construct the codes of the static literal tree */
+    for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
+    n = 0;
+    while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
+    while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
+    while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
+    while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
+    /* Codes 286 and 287 do not exist, but we must include them in the
+     * tree construction to get a canonical Huffman tree (longest code
+     * all ones)
+     */
+    gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);
+
+    /* The static distance tree is trivial: */
+    for (n = 0; n < D_CODES; n++) {
+        static_dtree[n].Len = 5;
+        static_dtree[n].Code = bi_reverse((unsigned)n, 5);
+    }
+    static_init_done = 1;
+
+#  ifdef GEN_TREES_H
+    gen_trees_header();
+#  endif
+#endif /* defined(GEN_TREES_H) || !defined(STDC) */
+}
+
+/* ===========================================================================
+ * Genererate the file trees.h describing the static trees.
+ */
+#ifdef GEN_TREES_H
+#  ifndef DEBUG
+#    include <stdio.h>
+#  endif
+
+#  define SEPARATOR(i, last, width) \
+      ((i) == (last)? "\n};\n\n" :    \
+       ((i) % (width) == (width)-1 ? ",\n" : ", "))
+
+void gen_trees_header()
+{
+    FILE *header = fopen("trees.h", "w");
+    int i;
+
+    Assert (header != NULL, "Can't open trees.h");
+    fprintf(header,
+           "/* header created automatically with -DGEN_TREES_H */\n\n");
+
+    fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
+    for (i = 0; i < L_CODES+2; i++) {
+       fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
+               static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
+    }
+
+    fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
+    for (i = 0; i < D_CODES; i++) {
+       fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
+               static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
+    }
+
+    fprintf(header, "const uch _dist_code[DIST_CODE_LEN] = {\n");
+    for (i = 0; i < DIST_CODE_LEN; i++) {
+       fprintf(header, "%2u%s", _dist_code[i],
+               SEPARATOR(i, DIST_CODE_LEN-1, 20));
+    }
+
+    fprintf(header, "const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
+    for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
+       fprintf(header, "%2u%s", _length_code[i],
+               SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
+    }
+
+    fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
+    for (i = 0; i < LENGTH_CODES; i++) {
+       fprintf(header, "%1u%s", base_length[i],
+               SEPARATOR(i, LENGTH_CODES-1, 20));
+    }
+
+    fprintf(header, "local const int base_dist[D_CODES] = {\n");
+    for (i = 0; i < D_CODES; i++) {
+       fprintf(header, "%5u%s", base_dist[i],
+               SEPARATOR(i, D_CODES-1, 10));
+    }
+
+    fclose(header);
+}
+#endif /* GEN_TREES_H */
+
+/* ===========================================================================
+ * Initialize the tree data structures for a new zlib stream.
+ */
+void _tr_init(s)
+    deflate_state *s;
+{
+    tr_static_init();
+
+    s->l_desc.dyn_tree = s->dyn_ltree;
+    s->l_desc.stat_desc = &static_l_desc;
+
+    s->d_desc.dyn_tree = s->dyn_dtree;
+    s->d_desc.stat_desc = &static_d_desc;
+
+    s->bl_desc.dyn_tree = s->bl_tree;
+    s->bl_desc.stat_desc = &static_bl_desc;
+
+    s->bi_buf = 0;
+    s->bi_valid = 0;
+    s->last_eob_len = 8; /* enough lookahead for inflate */
+#ifdef DEBUG
+    s->compressed_len = 0L;
+    s->bits_sent = 0L;
+#endif
+
+    /* Initialize the first block of the first file: */
+    init_block(s);
+}
+
+/* ===========================================================================
+ * Initialize a new block.
+ */
+local void init_block(s)
+    deflate_state *s;
+{
+    int n; /* iterates over tree elements */
+
+    /* Initialize the trees. */
+    for (n = 0; n < L_CODES;  n++) s->dyn_ltree[n].Freq = 0;
+    for (n = 0; n < D_CODES;  n++) s->dyn_dtree[n].Freq = 0;
+    for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
+
+    s->dyn_ltree[END_BLOCK].Freq = 1;
+    s->opt_len = s->static_len = 0L;
+    s->last_lit = s->matches = 0;
+}
+
+#define SMALLEST 1
+/* Index within the heap array of least frequent node in the Huffman tree */
+
+
+/* ===========================================================================
+ * Remove the smallest element from the heap and recreate the heap with
+ * one less element. Updates heap and heap_len.
+ */
+#define pqremove(s, tree, top) \
+{\
+    top = s->heap[SMALLEST]; \
+    s->heap[SMALLEST] = s->heap[s->heap_len--]; \
+    pqdownheap(s, tree, SMALLEST); \
+}
+
+/* ===========================================================================
+ * Compares to subtrees, using the tree depth as tie breaker when
+ * the subtrees have equal frequency. This minimizes the worst case length.
+ */
+#define smaller(tree, n, m, depth) \
+   (tree[n].Freq < tree[m].Freq || \
+   (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
+
+/* ===========================================================================
+ * Restore the heap property by moving down the tree starting at node k,
+ * exchanging a node with the smallest of its two sons if necessary, stopping
+ * when the heap property is re-established (each father smaller than its
+ * two sons).
+ */
+local void pqdownheap(s, tree, k)
+    deflate_state *s;
+    ct_data *tree;  /* the tree to restore */
+    int k;               /* node to move down */
+{
+    int v = s->heap[k];
+    int j = k << 1;  /* left son of k */
+    while (j <= s->heap_len) {
+        /* Set j to the smallest of the two sons: */
+        if (j < s->heap_len &&
+            smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
+            j++;
+        }
+        /* Exit if v is smaller than both sons */
+        if (smaller(tree, v, s->heap[j], s->depth)) break;
+
+        /* Exchange v with the smallest son */
+        s->heap[k] = s->heap[j];  k = j;
+
+        /* And continue down the tree, setting j to the left son of k */
+        j <<= 1;
+    }
+    s->heap[k] = v;
+}
+
+/* ===========================================================================
+ * Compute the optimal bit lengths for a tree and update the total bit length
+ * for the current block.
+ * IN assertion: the fields freq and dad are set, heap[heap_max] and
+ *    above are the tree nodes sorted by increasing frequency.
+ * OUT assertions: the field len is set to the optimal bit length, the
+ *     array bl_count contains the frequencies for each bit length.
+ *     The length opt_len is updated; static_len is also updated if stree is
+ *     not null.
+ */
+local void gen_bitlen(s, desc)
+    deflate_state *s;
+    tree_desc *desc;    /* the tree descriptor */
+{
+    ct_data *tree        = desc->dyn_tree;
+    int max_code         = desc->max_code;
+    const ct_data *stree = desc->stat_desc->static_tree;
+    const intf *extra    = desc->stat_desc->extra_bits;
+    int base             = desc->stat_desc->extra_base;
+    int max_length       = desc->stat_desc->max_length;
+    int h;              /* heap index */
+    int n, m;           /* iterate over the tree elements */
+    int bits;           /* bit length */
+    int xbits;          /* extra bits */
+    ush f;              /* frequency */
+    int overflow = 0;   /* number of elements with bit length too large */
+
+    for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;
+
+    /* In a first pass, compute the optimal bit lengths (which may
+     * overflow in the case of the bit length tree).
+     */
+    tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
+
+    for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
+        n = s->heap[h];
+        bits = tree[tree[n].Dad].Len + 1;
+        if (bits > max_length) bits = max_length, overflow++;
+        tree[n].Len = (ush)bits;
+        /* We overwrite tree[n].Dad which is no longer needed */
+
+        if (n > max_code) continue; /* not a leaf node */
+
+        s->bl_count[bits]++;
+        xbits = 0;
+        if (n >= base) xbits = extra[n-base];
+        f = tree[n].Freq;
+        s->opt_len += (ulg)f * (bits + xbits);
+        if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits);
+    }
+    if (overflow == 0) return;
+
+    Trace((stderr,"\nbit length overflow\n"));
+    /* This happens for example on obj2 and pic of the Calgary corpus */
+
+    /* Find the first bit length which could increase: */
+    do {
+        bits = max_length-1;
+        while (s->bl_count[bits] == 0) bits--;
+        s->bl_count[bits]--;      /* move one leaf down the tree */
+        s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
+        s->bl_count[max_length]--;
+        /* The brother of the overflow item also moves one step up,
+         * but this does not affect bl_count[max_length]
+         */
+        overflow -= 2;
+    } while (overflow > 0);
+
+    /* Now recompute all bit lengths, scanning in increasing frequency.
+     * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
+     * lengths instead of fixing only the wrong ones. This idea is taken
+     * from 'ar' written by Haruhiko Okumura.)
+     */
+    for (bits = max_length; bits != 0; bits--) {
+        n = s->bl_count[bits];
+        while (n != 0) {
+            m = s->heap[--h];
+            if (m > max_code) continue;
+            if (tree[m].Len != (unsigned) bits) {
+                Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
+                s->opt_len += ((long)bits - (long)tree[m].Len)
+                              *(long)tree[m].Freq;
+                tree[m].Len = (ush)bits;
+            }
+            n--;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Generate the codes for a given tree and bit counts (which need not be
+ * optimal).
+ * IN assertion: the array bl_count contains the bit length statistics for
+ * the given tree and the field len is set for all tree elements.
+ * OUT assertion: the field code is set for all tree elements of non
+ *     zero code length.
+ */
+local void gen_codes (tree, max_code, bl_count)
+    ct_data *tree;             /* the tree to decorate */
+    int max_code;              /* largest code with non zero frequency */
+    ushf *bl_count;            /* number of codes at each bit length */
+{
+    ush next_code[MAX_BITS+1]; /* next code value for each bit length */
+    ush code = 0;              /* running code value */
+    int bits;                  /* bit index */
+    int n;                     /* code index */
+
+    /* The distribution counts are first used to generate the code values
+     * without bit reversal.
+     */
+    for (bits = 1; bits <= MAX_BITS; bits++) {
+        next_code[bits] = code = (code + bl_count[bits-1]) << 1;
+    }
+    /* Check that the bit counts in bl_count are consistent. The last code
+     * must be all ones.
+     */
+    Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+            "inconsistent bit counts");
+    Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+    for (n = 0;  n <= max_code; n++) {
+        int len = tree[n].Len;
+        if (len == 0) continue;
+        /* Now reverse the bits */
+        tree[n].Code = bi_reverse(next_code[len]++, len);
+
+        Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+             n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+    }
+}
+
+/* ===========================================================================
+ * Construct one Huffman tree and assigns the code bit strings and lengths.
+ * Update the total bit length for the current block.
+ * IN assertion: the field freq is set for all tree elements.
+ * OUT assertions: the fields len and code are set to the optimal bit length
+ *     and corresponding code. The length opt_len is updated; static_len is
+ *     also updated if stree is not null. The field max_code is set.
+ */
+local void build_tree(s, desc)
+    deflate_state *s;
+    tree_desc *desc; /* the tree descriptor */
+{
+    ct_data *tree         = desc->dyn_tree;
+    const ct_data *stree  = desc->stat_desc->static_tree;
+    int elems             = desc->stat_desc->elems;
+    int n, m;          /* iterate over heap elements */
+    int max_code = -1; /* largest code with non zero frequency */
+    int node;          /* new node being created */
+
+    /* Construct the initial heap, with least frequent element in
+     * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+     * heap[0] is not used.
+     */
+    s->heap_len = 0, s->heap_max = HEAP_SIZE;
+
+    for (n = 0; n < elems; n++) {
+        if (tree[n].Freq != 0) {
+            s->heap[++(s->heap_len)] = max_code = n;
+            s->depth[n] = 0;
+        } else {
+            tree[n].Len = 0;
+        }
+    }
+
+    /* The pkzip format requires that at least one distance code exists,
+     * and that at least one bit should be sent even if there is only one
+     * possible code. So to avoid special checks later on we force at least
+     * two codes of non zero frequency.
+     */
+    while (s->heap_len < 2) {
+        node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
+        tree[node].Freq = 1;
+        s->depth[node] = 0;
+        s->opt_len--; if (stree) s->static_len -= stree[node].Len;
+        /* node is 0 or 1 so it does not have extra bits */
+    }
+    desc->max_code = max_code;
+
+    /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+     * establish sub-heaps of increasing lengths:
+     */
+    for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
+
+    /* Construct the Huffman tree by repeatedly combining the least two
+     * frequent nodes.
+     */
+    node = elems;              /* next internal node of the tree */
+    do {
+        pqremove(s, tree, n);  /* n = node of least frequency */
+        m = s->heap[SMALLEST]; /* m = node of next least frequency */
+
+        s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
+        s->heap[--(s->heap_max)] = m;
+
+        /* Create a new node father of n and m */
+        tree[node].Freq = tree[n].Freq + tree[m].Freq;
+        s->depth[node] = (uch) (MAX(s->depth[n], s->depth[m]) + 1);
+        tree[n].Dad = tree[m].Dad = (ush)node;
+#ifdef DUMP_BL_TREE
+        if (tree == s->bl_tree) {
+            fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
+                    node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
+        }
+#endif
+        /* and insert the new node in the heap */
+        s->heap[SMALLEST] = node++;
+        pqdownheap(s, tree, SMALLEST);
+
+    } while (s->heap_len >= 2);
+
+    s->heap[--(s->heap_max)] = s->heap[SMALLEST];
+
+    /* At this point, the fields freq and dad are set. We can now
+     * generate the bit lengths.
+     */
+    gen_bitlen(s, (tree_desc *)desc);
+
+    /* The field len is now set, we can generate the bit codes */
+    gen_codes ((ct_data *)tree, max_code, s->bl_count);
+}
+
+/* ===========================================================================
+ * Scan a literal or distance tree to determine the frequencies of the codes
+ * in the bit length tree.
+ */
+local void scan_tree (s, tree, max_code)
+    deflate_state *s;
+    ct_data *tree;   /* the tree to be scanned */
+    int max_code;    /* and its largest code of non zero frequency */
+{
+    int n;                     /* iterates over all tree elements */
+    int prevlen = -1;          /* last emitted length */
+    int curlen;                /* length of current code */
+    int nextlen = tree[0].Len; /* length of next code */
+    int count = 0;             /* repeat count of the current code */
+    int max_count = 7;         /* max repeat count */
+    int min_count = 4;         /* min repeat count */
+
+    if (nextlen == 0) max_count = 138, min_count = 3;
+    tree[max_code+1].Len = (ush)0xffff; /* guard */
+
+    for (n = 0; n <= max_code; n++) {
+        curlen = nextlen; nextlen = tree[n+1].Len;
+        if (++count < max_count && curlen == nextlen) {
+            continue;
+        } else if (count < min_count) {
+            s->bl_tree[curlen].Freq += count;
+        } else if (curlen != 0) {
+            if (curlen != prevlen) s->bl_tree[curlen].Freq++;
+            s->bl_tree[REP_3_6].Freq++;
+        } else if (count <= 10) {
+            s->bl_tree[REPZ_3_10].Freq++;
+        } else {
+            s->bl_tree[REPZ_11_138].Freq++;
+        }
+        count = 0; prevlen = curlen;
+        if (nextlen == 0) {
+            max_count = 138, min_count = 3;
+        } else if (curlen == nextlen) {
+            max_count = 6, min_count = 3;
+        } else {
+            max_count = 7, min_count = 4;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Send a literal or distance tree in compressed form, using the codes in
+ * bl_tree.
+ */
+local void send_tree (s, tree, max_code)
+    deflate_state *s;
+    ct_data *tree; /* the tree to be scanned */
+    int max_code;       /* and its largest code of non zero frequency */
+{
+    int n;                     /* iterates over all tree elements */
+    int prevlen = -1;          /* last emitted length */
+    int curlen;                /* length of current code */
+    int nextlen = tree[0].Len; /* length of next code */
+    int count = 0;             /* repeat count of the current code */
+    int max_count = 7;         /* max repeat count */
+    int min_count = 4;         /* min repeat count */
+
+    /* tree[max_code+1].Len = -1; */  /* guard already set */
+    if (nextlen == 0) max_count = 138, min_count = 3;
+
+    for (n = 0; n <= max_code; n++) {
+        curlen = nextlen; nextlen = tree[n+1].Len;
+        if (++count < max_count && curlen == nextlen) {
+            continue;
+        } else if (count < min_count) {
+            do { send_code(s, curlen, s->bl_tree); } while (--count != 0);
+
+        } else if (curlen != 0) {
+            if (curlen != prevlen) {
+                send_code(s, curlen, s->bl_tree); count--;
+            }
+            Assert(count >= 3 && count <= 6, " 3_6?");
+            send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
+
+        } else if (count <= 10) {
+            send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
+
+        } else {
+            send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
+        }
+        count = 0; prevlen = curlen;
+        if (nextlen == 0) {
+            max_count = 138, min_count = 3;
+        } else if (curlen == nextlen) {
+            max_count = 6, min_count = 3;
+        } else {
+            max_count = 7, min_count = 4;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Construct the Huffman tree for the bit lengths and return the index in
+ * bl_order of the last bit length code to send.
+ */
+local int build_bl_tree(s)
+    deflate_state *s;
+{
+    int max_blindex;  /* index of last bit length code of non zero freq */
+
+    /* Determine the bit length frequencies for literal and distance trees */
+    scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
+    scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);
+
+    /* Build the bit length tree: */
+    build_tree(s, (tree_desc *)(&(s->bl_desc)));
+    /* opt_len now includes the length of the tree representations, except
+     * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+     */
+
+    /* Determine the number of bit length codes to send. The pkzip format
+     * requires that at least 4 bit length codes be sent. (appnote.txt says
+     * 3 but the actual value used is 4.)
+     */
+    for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
+        if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
+    }
+    /* Update opt_len to include the bit length tree and counts */
+    s->opt_len += 3*(max_blindex+1) + 5+5+4;
+    Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
+            s->opt_len, s->static_len));
+
+    return max_blindex;
+}
+
+/* ===========================================================================
+ * Send the header for a block using dynamic Huffman trees: the counts, the
+ * lengths of the bit length codes, the literal tree and the distance tree.
+ * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+ */
+local void send_all_trees(s, lcodes, dcodes, blcodes)
+    deflate_state *s;
+    int lcodes, dcodes, blcodes; /* number of codes for each tree */
+{
+    int rank;                    /* index in bl_order */
+
+    Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
+    Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
+            "too many codes");
+    Tracev((stderr, "\nbl counts: "));
+    send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
+    send_bits(s, dcodes-1,   5);
+    send_bits(s, blcodes-4,  4); /* not -3 as stated in appnote.txt */
+    for (rank = 0; rank < blcodes; rank++) {
+        Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
+        send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
+    }
+    Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
+
+    send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
+    Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
+
+    send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
+    Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+}
+
+/* ===========================================================================
+ * Send a stored block
+ */
+void _tr_stored_block(s, buf, stored_len, eof)
+    deflate_state *s;
+    charf *buf;       /* input block */
+    ulg stored_len;   /* length of input block */
+    int eof;          /* true if this is the last block for a file */
+{
+    send_bits(s, (STORED_BLOCK<<1)+eof, 3);  /* send block type */
+#ifdef DEBUG
+    s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
+    s->compressed_len += (stored_len + 4) << 3;
+#endif
+    copy_block(s, buf, (unsigned)stored_len, 1); /* with header */
+}
+
+/* ===========================================================================
+ * Send one empty static block to give enough lookahead for inflate.
+ * This takes 10 bits, of which 7 may remain in the bit buffer.
+ * The current inflate code requires 9 bits of lookahead. If the
+ * last two codes for the previous block (real code plus EOB) were coded
+ * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
+ * the last real code. In this case we send two empty static blocks instead
+ * of one. (There are no problems if the previous block is stored or fixed.)
+ * To simplify the code, we assume the worst case of last real code encoded
+ * on one bit only.
+ */
+void _tr_align(s)
+    deflate_state *s;
+{
+    send_bits(s, STATIC_TREES<<1, 3);
+    send_code(s, END_BLOCK, static_ltree);
+#ifdef DEBUG
+    s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
+#endif
+    bi_flush(s);
+    /* Of the 10 bits for the empty block, we have already sent
+     * (10 - bi_valid) bits. The lookahead for the last real code (before
+     * the EOB of the previous block) was thus at least one plus the length
+     * of the EOB plus what we have just sent of the empty static block.
+     */
+    if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {
+        send_bits(s, STATIC_TREES<<1, 3);
+        send_code(s, END_BLOCK, static_ltree);
+#ifdef DEBUG
+        s->compressed_len += 10L;
+#endif
+        bi_flush(s);
+    }
+    s->last_eob_len = 7;
+}
+
+/* ===========================================================================
+ * Determine the best encoding for the current block: dynamic trees, static
+ * trees or store, and output the encoded block to the zip file.
+ */
+void _tr_flush_block(s, buf, stored_len, eof)
+    deflate_state *s;
+    charf *buf;       /* input block, or NULL if too old */
+    ulg stored_len;   /* length of input block */
+    int eof;          /* true if this is the last block for a file */
+{
+    ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
+    int max_blindex = 0;  /* index of last bit length code of non zero freq */
+
+    /* Build the Huffman trees unless a stored block is forced */
+    if (s->level > 0) {
+
+        /* Check if the file is ascii or binary */
+       if (s->data_type == Z_UNKNOWN) set_data_type(s);
+
+       /* Construct the literal and distance trees */
+       build_tree(s, (tree_desc *)(&(s->l_desc)));
+       Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
+               s->static_len));
+
+       build_tree(s, (tree_desc *)(&(s->d_desc)));
+       Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
+               s->static_len));
+       /* At this point, opt_len and static_len are the total bit lengths of
+        * the compressed block data, excluding the tree representations.
+        */
+
+       /* Build the bit length tree for the above two trees, and get the index
+        * in bl_order of the last bit length code to send.
+        */
+       max_blindex = build_bl_tree(s);
+
+       /* Determine the best encoding. Compute first the block length in bytes*/
+       opt_lenb = (s->opt_len+3+7)>>3;
+       static_lenb = (s->static_len+3+7)>>3;
+
+       Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
+               opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
+               s->last_lit));
+
+       if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
+
+    } else {
+        Assert(buf != (char*)0, "lost buf");
+       opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
+    }
+
+#ifdef FORCE_STORED
+    if (buf != (char*)0) { /* force stored block */
+#else
+    if (stored_len+4 <= opt_lenb && buf != (char*)0) {
+                       /* 4: two words for the lengths */
+#endif
+        /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+         * Otherwise we can't have processed more than WSIZE input bytes since
+         * the last block flush, because compression would have been
+         * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+         * transform a block into a stored block.
+         */
+        _tr_stored_block(s, buf, stored_len, eof);
+
+#ifdef FORCE_STATIC
+    } else if (static_lenb >= 0) { /* force static trees */
+#else
+    } else if (static_lenb == opt_lenb) {
+#endif
+        send_bits(s, (STATIC_TREES<<1)+eof, 3);
+        compress_block(s, static_ltree, static_dtree);
+#ifdef DEBUG
+        s->compressed_len += 3 + s->static_len;
+#endif
+    } else {
+        send_bits(s, (DYN_TREES<<1)+eof, 3);
+        send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
+                       max_blindex+1);
+        compress_block(s, s->dyn_ltree, s->dyn_dtree);
+#ifdef DEBUG
+        s->compressed_len += 3 + s->opt_len;
+#endif
+    }
+    Assert (s->compressed_len == s->bits_sent, "bad compressed size");
+    /* The above check is made mod 2^32, for files larger than 512 MB
+     * and uLong implemented on 32 bits.
+     */
+    init_block(s);
+
+    if (eof) {
+        bi_windup(s);
+#ifdef DEBUG
+        s->compressed_len += 7;  /* align on byte boundary */
+#endif
+    }
+    Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
+           s->compressed_len-7*eof));
+}
+
+/* ===========================================================================
+ * Save the match info and tally the frequency counts. Return true if
+ * the current block must be flushed.
+ */
+int _tr_tally (s, dist, lc)
+    deflate_state *s;
+    unsigned dist;  /* distance of matched string */
+    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
+{
+    s->d_buf[s->last_lit] = (ush)dist;
+    s->l_buf[s->last_lit++] = (uch)lc;
+    if (dist == 0) {
+        /* lc is the unmatched char */
+        s->dyn_ltree[lc].Freq++;
+    } else {
+        s->matches++;
+        /* Here, lc is the match length - MIN_MATCH */
+        dist--;             /* dist = match distance - 1 */
+        Assert((ush)dist < (ush)MAX_DIST(s) &&
+               (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
+               (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
+
+        s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
+        s->dyn_dtree[d_code(dist)].Freq++;
+    }
+
+#ifdef TRUNCATE_BLOCK
+    /* Try to guess if it is profitable to stop the current block here */
+    if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {
+        /* Compute an upper bound for the compressed length */
+        ulg out_length = (ulg)s->last_lit*8L;
+        ulg in_length = (ulg)((long)s->strstart - s->block_start);
+        int dcode;
+        for (dcode = 0; dcode < D_CODES; dcode++) {
+            out_length += (ulg)s->dyn_dtree[dcode].Freq *
+                (5L+extra_dbits[dcode]);
+        }
+        out_length >>= 3;
+        Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
+               s->last_lit, in_length, out_length,
+               100L - out_length*100L/in_length));
+        if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;
+    }
+#endif
+    return (s->last_lit == s->lit_bufsize-1);
+    /* We avoid equality with lit_bufsize because of wraparound at 64K
+     * on 16 bit machines and because stored blocks are restricted to
+     * 64K-1 bytes.
+     */
+}
+
+/* ===========================================================================
+ * Send the block data compressed using the given Huffman trees
+ */
+local void compress_block(s, ltree, dtree)
+    deflate_state *s;
+    const ct_data *ltree; /* literal tree */
+    const ct_data *dtree; /* distance tree */
+{
+    unsigned dist;      /* distance of matched string */
+    int lc;             /* match length or unmatched char (if dist == 0) */
+    unsigned lx = 0;    /* running index in l_buf */
+    unsigned code;      /* the code to send */
+    int extra;          /* number of extra bits to send */
+
+    if (s->last_lit != 0) do {
+        dist = s->d_buf[lx];
+        lc = s->l_buf[lx++];
+        if (dist == 0) {
+            send_code(s, lc, ltree); /* send a literal byte */
+            Tracecv(isgraph(lc), (stderr," '%c' ", lc));
+        } else {
+            /* Here, lc is the match length - MIN_MATCH */
+            code = _length_code[lc];
+            send_code(s, code+LITERALS+1, ltree); /* send the length code */
+            extra = extra_lbits[code];
+            if (extra != 0) {
+                lc -= base_length[code];
+                send_bits(s, lc, extra);       /* send the extra length bits */
+            }
+            dist--; /* dist is now the match distance - 1 */
+            code = d_code(dist);
+            Assert (code < D_CODES, "bad d_code");
+
+            send_code(s, code, dtree);       /* send the distance code */
+            extra = extra_dbits[code];
+            if (extra != 0) {
+                dist -= base_dist[code];
+                send_bits(s, dist, extra);   /* send the extra distance bits */
+            }
+        } /* literal or match pair ? */
+
+        /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
+        Assert(s->pending < s->lit_bufsize + 2*lx, "pendingBuf overflow");
+
+    } while (lx < s->last_lit);
+
+    send_code(s, END_BLOCK, ltree);
+    s->last_eob_len = ltree[END_BLOCK].Len;
+}
+
+/* ===========================================================================
+ * Set the data type to ASCII or BINARY, using a crude approximation:
+ * binary if more than 20% of the bytes are <= 6 or >= 128, ascii otherwise.
+ * IN assertion: the fields freq of dyn_ltree are set and the total of all
+ * frequencies does not exceed 64K (to fit in an int on 16 bit machines).
+ */
+local void set_data_type(s)
+    deflate_state *s;
+{
+    int n = 0;
+    unsigned ascii_freq = 0;
+    unsigned bin_freq = 0;
+    while (n < 7)        bin_freq += s->dyn_ltree[n++].Freq;
+    while (n < 128)    ascii_freq += s->dyn_ltree[n++].Freq;
+    while (n < LITERALS) bin_freq += s->dyn_ltree[n++].Freq;
+    s->data_type = (Byte)(bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII);
+}
+
+/* ===========================================================================
+ * Reverse the first len bits of a code, using straightforward code (a faster
+ * method would use a table)
+ * IN assertion: 1 <= len <= 15
+ */
+local unsigned bi_reverse(code, len)
+    unsigned code; /* the value to invert */
+    int len;       /* its bit length */
+{
+    register unsigned res = 0;
+    do {
+        res |= code & 1;
+        code >>= 1, res <<= 1;
+    } while (--len > 0);
+    return res >> 1;
+}
+
+/* ===========================================================================
+ * Flush the bit buffer, keeping at most 7 bits in it.
+ */
+local void bi_flush(s)
+    deflate_state *s;
+{
+    if (s->bi_valid == 16) {
+        put_short(s, s->bi_buf);
+        s->bi_buf = 0;
+        s->bi_valid = 0;
+    } else if (s->bi_valid >= 8) {
+        put_byte(s, (Byte)s->bi_buf);
+        s->bi_buf >>= 8;
+        s->bi_valid -= 8;
+    }
+}
+
+/* ===========================================================================
+ * Flush the bit buffer and align the output on a byte boundary
+ */
+local void bi_windup(s)
+    deflate_state *s;
+{
+    if (s->bi_valid > 8) {
+        put_short(s, s->bi_buf);
+    } else if (s->bi_valid > 0) {
+        put_byte(s, (Byte)s->bi_buf);
+    }
+    s->bi_buf = 0;
+    s->bi_valid = 0;
+#ifdef DEBUG
+    s->bits_sent = (s->bits_sent+7) & ~7;
+#endif
+}
+
+/* ===========================================================================
+ * Copy a stored block, storing first the length and its
+ * one's complement if requested.
+ */
+local void copy_block(s, buf, len, header)
+    deflate_state *s;
+    charf    *buf;    /* the input data */
+    unsigned len;     /* its length */
+    int      header;  /* true if block header must be written */
+{
+    bi_windup(s);        /* align on byte boundary */
+    s->last_eob_len = 8; /* enough lookahead for inflate */
+
+    if (header) {
+        put_short(s, (ush)len);   
+        put_short(s, (ush)~len);
+#ifdef DEBUG
+        s->bits_sent += 2*16;
+#endif
+    }
+#ifdef DEBUG
+    s->bits_sent += (ulg)len<<3;
+#endif
+    while (len--) {
+        put_byte(s, *buf++);
+    }
+}
diff -druN linux-noipsec/net/ipsec/zlib/trees.h linux/net/ipsec/zlib/trees.h
--- linux-noipsec/net/ipsec/zlib/trees.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/trees.h        Fri Sep 29 20:51:34 2000
@@ -0,0 +1,128 @@
+/* header created automatically with -DGEN_TREES_H */
+
+local const ct_data static_ltree[L_CODES+2] = {
+{{ 12},{  8}}, {{140},{  8}}, {{ 76},{  8}}, {{204},{  8}}, {{ 44},{  8}},
+{{172},{  8}}, {{108},{  8}}, {{236},{  8}}, {{ 28},{  8}}, {{156},{  8}},
+{{ 92},{  8}}, {{220},{  8}}, {{ 60},{  8}}, {{188},{  8}}, {{124},{  8}},
+{{252},{  8}}, {{  2},{  8}}, {{130},{  8}}, {{ 66},{  8}}, {{194},{  8}},
+{{ 34},{  8}}, {{162},{  8}}, {{ 98},{  8}}, {{226},{  8}}, {{ 18},{  8}},
+{{146},{  8}}, {{ 82},{  8}}, {{210},{  8}}, {{ 50},{  8}}, {{178},{  8}},
+{{114},{  8}}, {{242},{  8}}, {{ 10},{  8}}, {{138},{  8}}, {{ 74},{  8}},
+{{202},{  8}}, {{ 42},{  8}}, {{170},{  8}}, {{106},{  8}}, {{234},{  8}},
+{{ 26},{  8}}, {{154},{  8}}, {{ 90},{  8}}, {{218},{  8}}, {{ 58},{  8}},
+{{186},{  8}}, {{122},{  8}}, {{250},{  8}}, {{  6},{  8}}, {{134},{  8}},
+{{ 70},{  8}}, {{198},{  8}}, {{ 38},{  8}}, {{166},{  8}}, {{102},{  8}},
+{{230},{  8}}, {{ 22},{  8}}, {{150},{  8}}, {{ 86},{  8}}, {{214},{  8}},
+{{ 54},{  8}}, {{182},{  8}}, {{118},{  8}}, {{246},{  8}}, {{ 14},{  8}},
+{{142},{  8}}, {{ 78},{  8}}, {{206},{  8}}, {{ 46},{  8}}, {{174},{  8}},
+{{110},{  8}}, {{238},{  8}}, {{ 30},{  8}}, {{158},{  8}}, {{ 94},{  8}},
+{{222},{  8}}, {{ 62},{  8}}, {{190},{  8}}, {{126},{  8}}, {{254},{  8}},
+{{  1},{  8}}, {{129},{  8}}, {{ 65},{  8}}, {{193},{  8}}, {{ 33},{  8}},
+{{161},{  8}}, {{ 97},{  8}}, {{225},{  8}}, {{ 17},{  8}}, {{145},{  8}},
+{{ 81},{  8}}, {{209},{  8}}, {{ 49},{  8}}, {{177},{  8}}, {{113},{  8}},
+{{241},{  8}}, {{  9},{  8}}, {{137},{  8}}, {{ 73},{  8}}, {{201},{  8}},
+{{ 41},{  8}}, {{169},{  8}}, {{105},{  8}}, {{233},{  8}}, {{ 25},{  8}},
+{{153},{  8}}, {{ 89},{  8}}, {{217},{  8}}, {{ 57},{  8}}, {{185},{  8}},
+{{121},{  8}}, {{249},{  8}}, {{  5},{  8}}, {{133},{  8}}, {{ 69},{  8}},
+{{197},{  8}}, {{ 37},{  8}}, {{165},{  8}}, {{101},{  8}}, {{229},{  8}},
+{{ 21},{  8}}, {{149},{  8}}, {{ 85},{  8}}, {{213},{  8}}, {{ 53},{  8}},
+{{181},{  8}}, {{117},{  8}}, {{245},{  8}}, {{ 13},{  8}}, {{141},{  8}},
+{{ 77},{  8}}, {{205},{  8}}, {{ 45},{  8}}, {{173},{  8}}, {{109},{  8}},
+{{237},{  8}}, {{ 29},{  8}}, {{157},{  8}}, {{ 93},{  8}}, {{221},{  8}},
+{{ 61},{  8}}, {{189},{  8}}, {{125},{  8}}, {{253},{  8}}, {{ 19},{  9}},
+{{275},{  9}}, {{147},{  9}}, {{403},{  9}}, {{ 83},{  9}}, {{339},{  9}},
+{{211},{  9}}, {{467},{  9}}, {{ 51},{  9}}, {{307},{  9}}, {{179},{  9}},
+{{435},{  9}}, {{115},{  9}}, {{371},{  9}}, {{243},{  9}}, {{499},{  9}},
+{{ 11},{  9}}, {{267},{  9}}, {{139},{  9}}, {{395},{  9}}, {{ 75},{  9}},
+{{331},{  9}}, {{203},{  9}}, {{459},{  9}}, {{ 43},{  9}}, {{299},{  9}},
+{{171},{  9}}, {{427},{  9}}, {{107},{  9}}, {{363},{  9}}, {{235},{  9}},
+{{491},{  9}}, {{ 27},{  9}}, {{283},{  9}}, {{155},{  9}}, {{411},{  9}},
+{{ 91},{  9}}, {{347},{  9}}, {{219},{  9}}, {{475},{  9}}, {{ 59},{  9}},
+{{315},{  9}}, {{187},{  9}}, {{443},{  9}}, {{123},{  9}}, {{379},{  9}},
+{{251},{  9}}, {{507},{  9}}, {{  7},{  9}}, {{263},{  9}}, {{135},{  9}},
+{{391},{  9}}, {{ 71},{  9}}, {{327},{  9}}, {{199},{  9}}, {{455},{  9}},
+{{ 39},{  9}}, {{295},{  9}}, {{167},{  9}}, {{423},{  9}}, {{103},{  9}},
+{{359},{  9}}, {{231},{  9}}, {{487},{  9}}, {{ 23},{  9}}, {{279},{  9}},
+{{151},{  9}}, {{407},{  9}}, {{ 87},{  9}}, {{343},{  9}}, {{215},{  9}},
+{{471},{  9}}, {{ 55},{  9}}, {{311},{  9}}, {{183},{  9}}, {{439},{  9}},
+{{119},{  9}}, {{375},{  9}}, {{247},{  9}}, {{503},{  9}}, {{ 15},{  9}},
+{{271},{  9}}, {{143},{  9}}, {{399},{  9}}, {{ 79},{  9}}, {{335},{  9}},
+{{207},{  9}}, {{463},{  9}}, {{ 47},{  9}}, {{303},{  9}}, {{175},{  9}},
+{{431},{  9}}, {{111},{  9}}, {{367},{  9}}, {{239},{  9}}, {{495},{  9}},
+{{ 31},{  9}}, {{287},{  9}}, {{159},{  9}}, {{415},{  9}}, {{ 95},{  9}},
+{{351},{  9}}, {{223},{  9}}, {{479},{  9}}, {{ 63},{  9}}, {{319},{  9}},
+{{191},{  9}}, {{447},{  9}}, {{127},{  9}}, {{383},{  9}}, {{255},{  9}},
+{{511},{  9}}, {{  0},{  7}}, {{ 64},{  7}}, {{ 32},{  7}}, {{ 96},{  7}},
+{{ 16},{  7}}, {{ 80},{  7}}, {{ 48},{  7}}, {{112},{  7}}, {{  8},{  7}},
+{{ 72},{  7}}, {{ 40},{  7}}, {{104},{  7}}, {{ 24},{  7}}, {{ 88},{  7}},
+{{ 56},{  7}}, {{120},{  7}}, {{  4},{  7}}, {{ 68},{  7}}, {{ 36},{  7}},
+{{100},{  7}}, {{ 20},{  7}}, {{ 84},{  7}}, {{ 52},{  7}}, {{116},{  7}},
+{{  3},{  8}}, {{131},{  8}}, {{ 67},{  8}}, {{195},{  8}}, {{ 35},{  8}},
+{{163},{  8}}, {{ 99},{  8}}, {{227},{  8}}
+};
+
+local const ct_data static_dtree[D_CODES] = {
+{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
+{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
+{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
+{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
+{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
+{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
+};
+
+const uch _dist_code[DIST_CODE_LEN] = {
+ 0,  1,  2,  3,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,
+ 8,  8,  8,  8,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10, 10, 10,
+10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
+13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,  0,  0, 16, 17,
+18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
+};
+
+const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {
+ 0,  1,  2,  3,  4,  5,  6,  7,  8,  8,  9,  9, 10, 10, 11, 11, 12, 12, 12, 12,
+13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
+17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
+19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
+22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
+};
+
+local const int base_length[LENGTH_CODES] = {
+0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
+64, 80, 96, 112, 128, 160, 192, 224, 0
+};
+
+local const int base_dist[D_CODES] = {
+    0,     1,     2,     3,     4,     6,     8,    12,    16,    24,
+   32,    48,    64,    96,   128,   192,   256,   384,   512,   768,
+ 1024,  1536,  2048,  3072,  4096,  6144,  8192, 12288, 16384, 24576
+};
+
diff -druN linux-noipsec/net/ipsec/zlib/zconf.h linux/net/ipsec/zlib/zconf.h
--- linux-noipsec/net/ipsec/zlib/zconf.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/zconf.h        Fri Sep 29 20:51:34 2000
@@ -0,0 +1,309 @@
+/* zconf.h -- configuration of the zlib compression library
+ * Copyright (C) 1995-1998 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* @(#) $Id$ */
+
+#ifndef _ZCONF_H
+#define _ZCONF_H
+
+/*
+ * If you *really* need a unique prefix for all types and library functions,
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+ */
+#ifdef IPCOMP_PREFIX
+#  define deflateInit_ ipcomp_deflateInit_
+#  define deflate      ipcomp_deflate
+#  define deflateEnd   ipcomp_deflateEnd
+#  define inflateInit_         ipcomp_inflateInit_
+#  define inflate      ipcomp_inflate
+#  define inflateEnd   ipcomp_inflateEnd
+#  define deflateInit2_        ipcomp_deflateInit2_
+#  define deflateSetDictionary ipcomp_deflateSetDictionary
+#  define deflateCopy  ipcomp_deflateCopy
+#  define deflateReset ipcomp_deflateReset
+#  define deflateParams        ipcomp_deflateParams
+#  define inflateInit2_        ipcomp_inflateInit2_
+#  define inflateSetDictionary ipcomp_inflateSetDictionary
+#  define inflateSync  ipcomp_inflateSync
+#  define inflateSyncPoint ipcomp_inflateSyncPoint
+#  define inflateReset ipcomp_inflateReset
+#  define compress     ipcomp_compress
+#  define compress2    ipcomp_compress2
+#  define uncompress   ipcomp_uncompress
+#  define adler32      ipcomp_adler32
+#  define crc32                ipcomp_crc32
+#  define get_crc_table ipcomp_get_crc_table
+/* SSS: these also need to be prefixed to avoid clash with ppp_deflate and ext2compression */
+#  define inflate_blocks ipcomp_deflate_blocks
+#  define inflate_blocks_free ipcomp_deflate_blocks_free
+#  define inflate_blocks_new ipcomp_inflate_blocks_new
+#  define inflate_blocks_reset ipcomp_inflate_blocks_reset
+#  define inflate_blocks_sync_point ipcomp_inflate_blocks_sync_point
+#  define inflate_set_dictionary ipcomp_inflate_set_dictionary
+#  define inflate_codes ipcomp_inflate_codes
+#  define inflate_codes_free ipcomp_inflate_codes_free
+#  define inflate_codes_new ipcomp_inflate_codes_new
+#  define inflate_fast ipcomp_inflate_fast
+#  define inflate_trees_bits ipcomp_inflate_trees_bits
+#  define inflate_trees_dynamic ipcomp_inflate_trees_dynamic
+#  define inflate_trees_fixed ipcomp_inflate_trees_fixed
+#  define inflate_flush ipcomp_inflate_flush
+#  define inflate_mask ipcomp_inflate_mask
+#  define _dist_code _ipcomp_dist_code
+#  define _length_code _ipcomp_length_code
+#  define _tr_align _ipcomp_tr_align
+#  define _tr_flush_block _ipcomp_tr_flush_block
+#  define _tr_init _ipcomp_tr_init
+#  define _tr_stored_block _ipcomp_tr_stored_block
+#  define _tr_tally _ipcomp_tr_tally
+#  define zError ipcomp_zError
+#  define z_errmsg ipcomp_z_errmsg
+#  define zlibVersion ipcomp_zlibVersion
+#  define match_init ipcomp_match_init
+#  define longest_match ipcomp_longest_match
+#endif
+
+#ifdef Z_PREFIX
+#  define Byte         z_Byte
+#  define uInt         z_uInt
+#  define uLong                z_uLong
+#  define Bytef                z_Bytef
+#  define charf                z_charf
+#  define intf         z_intf
+#  define uIntf                z_uIntf
+#  define uLongf       z_uLongf
+#  define voidpf       z_voidpf
+#  define voidp                z_voidp
+#endif
+
+#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
+#  define WIN32
+#endif
+#if defined(__GNUC__) || defined(WIN32) || defined(__386__) || defined(i386)
+#  ifndef __32BIT__
+#    define __32BIT__
+#  endif
+#endif
+#if defined(__MSDOS__) && !defined(MSDOS)
+#  define MSDOS
+#endif
+
+/*
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
+ * than 64k bytes at a time (needed on systems with 16-bit int).
+ */
+#if defined(MSDOS) && !defined(__32BIT__)
+#  define MAXSEG_64K
+#endif
+#ifdef MSDOS
+#  define UNALIGNED_OK
+#endif
+
+#if (defined(MSDOS) || defined(_WINDOWS) || defined(WIN32))  && !defined(STDC)
+#  define STDC
+#endif
+#if defined(__STDC__) || defined(__cplusplus) || defined(__OS2__)
+#  ifndef STDC
+#    define STDC
+#  endif
+#endif
+
+#ifndef STDC
+#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
+#    define const
+#  endif
+#endif
+
+/* Some Mac compilers merge all .h files incorrectly: */
+#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__)
+#  define NO_DUMMY_DECL
+#endif
+
+/* Old Borland C incorrectly complains about missing returns: */
+#if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
+#  define NEED_DUMMY_RETURN
+#endif
+
+
+/* Maximum value for memLevel in deflateInit2 */
+#ifndef MAX_MEM_LEVEL
+#  ifdef MAXSEG_64K
+#    define MAX_MEM_LEVEL 8
+#  else
+#    define MAX_MEM_LEVEL 9
+#  endif
+#endif
+
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
+ * created by gzip. (Files created by minigzip can still be extracted by
+ * gzip.)
+ */
+#ifndef MAX_WBITS
+#  define MAX_WBITS   15 /* 32K LZ77 window */
+#endif
+
+/* The memory requirements for deflate are (in bytes):
+            (1 << (windowBits+2)) +  (1 << (memLevel+9))
+ that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
+ plus a few kilobytes for small objects. For example, if you want to reduce
+ the default memory requirements from 256K to 128K, compile with
+     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
+ Of course this will generally degrade compression (there's no free lunch).
+
+   The memory requirements for inflate are (in bytes) 1 << windowBits
+ that is, 32K for windowBits=15 (default value) plus a few kilobytes
+ for small objects.
+*/
+
+                        /* Type declarations */
+
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
+/* The following definitions for FAR are needed only for MSDOS mixed
+ * model programming (small or medium model with some far allocations).
+ * This was tested only with MSC; for other MSDOS compilers you may have
+ * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
+ * just define FAR to be empty.
+ */
+#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(__32BIT__)
+   /* MSC small or medium model */
+#  define SMALL_MEDIUM
+#  ifdef _MSC_VER
+#    define FAR _far
+#  else
+#    define FAR far
+#  endif
+#endif
+#if defined(__BORLANDC__) && (defined(__SMALL__) || defined(__MEDIUM__))
+#  ifndef __32BIT__
+#    define SMALL_MEDIUM
+#    define FAR _far
+#  endif
+#endif
+
+/* Compile with -DZLIB_DLL for Windows DLL support */
+#if defined(ZLIB_DLL)
+#  if defined(_WINDOWS) || defined(WINDOWS)
+#    ifdef FAR
+#      undef FAR
+#    endif
+#    include <windows.h>
+#    define ZEXPORT  WINAPI
+#    ifdef WIN32
+#      define ZEXPORTVA  WINAPIV
+#    else
+#      define ZEXPORTVA  FAR _cdecl _export
+#    endif
+#  endif
+#  if defined (__BORLANDC__)
+#    if (__BORLANDC__ >= 0x0500) && defined (WIN32)
+#      include <windows.h>
+#      define ZEXPORT __declspec(dllexport) WINAPI
+#      define ZEXPORTRVA __declspec(dllexport) WINAPIV
+#    else
+#      if defined (_Windows) && defined (__DLL__)
+#        define ZEXPORT _export
+#        define ZEXPORTVA _export
+#      endif
+#    endif
+#  endif
+#endif
+
+#if defined (__BEOS__)
+#  if defined (ZLIB_DLL)
+#    define ZEXTERN extern __declspec(dllexport)
+#  else
+#    define ZEXTERN extern __declspec(dllimport)
+#  endif
+#endif
+
+#ifndef ZEXPORT
+#  define ZEXPORT
+#endif
+#ifndef ZEXPORTVA
+#  define ZEXPORTVA
+#endif
+#ifndef ZEXTERN
+#  define ZEXTERN extern
+#endif
+
+#ifndef FAR
+#   define FAR
+#endif
+
+#if !defined(MACOS) && !defined(TARGET_OS_MAC)
+typedef unsigned char  Byte;  /* 8 bits */
+#endif
+typedef unsigned int   uInt;  /* 16 bits or more */
+typedef unsigned long  uLong; /* 32 bits or more */
+
+#ifdef SMALL_MEDIUM
+   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
+#  define Bytef Byte FAR
+#else
+   typedef Byte  FAR Bytef;
+#endif
+typedef char  FAR charf;
+typedef int   FAR intf;
+typedef uInt  FAR uIntf;
+typedef uLong FAR uLongf;
+
+#ifdef STDC
+   typedef void FAR *voidpf;
+   typedef void     *voidp;
+#else
+   typedef Byte FAR *voidpf;
+   typedef Byte     *voidp;
+#endif
+
+#ifdef HAVE_UNISTD_H
+#  include <sys/types.h> /* for off_t */
+#  include <unistd.h>    /* for SEEK_* and off_t */
+#  define z_off_t  off_t
+#endif
+#ifndef SEEK_SET
+#  define SEEK_SET        0       /* Seek from beginning of file.  */
+#  define SEEK_CUR        1       /* Seek from current position.  */
+#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
+#endif
+#ifndef z_off_t
+#  define  z_off_t long
+#endif
+
+/* MVS linker does not support external names larger than 8 bytes */
+#if defined(__MVS__)
+#   pragma map(deflateInit_,"DEIN")
+#   pragma map(deflateInit2_,"DEIN2")
+#   pragma map(deflateEnd,"DEEND")
+#   pragma map(inflateInit_,"ININ")
+#   pragma map(inflateInit2_,"ININ2")
+#   pragma map(inflateEnd,"INEND")
+#   pragma map(inflateSync,"INSY")
+#   pragma map(inflateSetDictionary,"INSEDI")
+#   pragma map(inflate_blocks,"INBL")
+#   pragma map(inflate_blocks_new,"INBLNE")
+#   pragma map(inflate_blocks_free,"INBLFR")
+#   pragma map(inflate_blocks_reset,"INBLRE")
+#   pragma map(inflate_codes_free,"INCOFR")
+#   pragma map(inflate_codes,"INCO")
+#   pragma map(inflate_fast,"INFA")
+#   pragma map(inflate_flush,"INFLU")
+#   pragma map(inflate_mask,"INMA")
+#   pragma map(inflate_set_dictionary,"INSEDI2")
+#   pragma map(ipcomp_inflate_copyright,"INCOPY")
+#   pragma map(inflate_trees_bits,"INTRBI")
+#   pragma map(inflate_trees_dynamic,"INTRDY")
+#   pragma map(inflate_trees_fixed,"INTRFI")
+#   pragma map(inflate_trees_free,"INTRFR")
+#endif
+
+#endif /* _ZCONF_H */
diff -druN linux-noipsec/net/ipsec/zlib/zlib.h linux/net/ipsec/zlib/zlib.h
--- linux-noipsec/net/ipsec/zlib/zlib.h Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/zlib.h Fri Sep 29 20:51:34 2000
@@ -0,0 +1,893 @@
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.1.3, July 9th, 1998
+
+  Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+
+  The data format used by the zlib library is described by RFCs (Request for
+  Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt
+  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+*/
+
+#ifndef _ZLIB_H
+#define _ZLIB_H
+
+#include "zconf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_VERSION "1.1.3"
+
+/* 
+     The 'zlib' compression library provides in-memory compression and
+  decompression functions, including integrity checks of the uncompressed
+  data.  This version of the library supports only one compression method
+  (deflation) but other algorithms will be added later and will have the same
+  stream interface.
+
+     Compression can be done in a single step if the buffers are large
+  enough (for example if an input file is mmap'ed), or can be done by
+  repeated calls of the compression function.  In the latter case, the
+  application must provide more input and/or consume the output
+  (providing more output space) before each call.
+
+     The library also supports reading and writing files in gzip (.gz) format
+  with an interface similar to that of stdio.
+
+     The library does not install any signal handler. The decoder checks
+  the consistency of the compressed data, so the library should never
+  crash even in case of corrupted input.
+*/
+
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
+typedef void   (*free_func)  OF((voidpf opaque, voidpf address));
+
+struct internal_state;
+
+typedef struct z_stream_s {
+    Bytef    *next_in;  /* next input byte */
+    uInt     avail_in;  /* number of bytes available at next_in */
+    uLong    total_in;  /* total nb of input bytes read so far */
+
+    Bytef    *next_out; /* next output byte should be put there */
+    uInt     avail_out; /* remaining free space at next_out */
+    uLong    total_out; /* total nb of bytes output so far */
+
+    const char     *msg;      /* last error message, NULL if no error */
+    struct internal_state FAR *state; /* not visible by applications */
+
+    alloc_func zalloc;  /* used to allocate the internal state */
+    free_func  zfree;   /* used to free the internal state */
+    voidpf     opaque;  /* private data object passed to zalloc and zfree */
+
+    int     data_type;  /* best guess about the data type: ascii or binary */
+    uLong   adler;      /* adler32 value of the uncompressed data */
+    uLong   reserved;   /* reserved for future use */
+} z_stream;
+
+typedef z_stream FAR *z_streamp;
+
+/*
+   The application must update next_in and avail_in when avail_in has
+   dropped to zero. It must update next_out and avail_out when avail_out
+   has dropped to zero. The application must initialize zalloc, zfree and
+   opaque before calling the init function. All other fields are set by the
+   compression library and must not be updated by the application.
+
+   The opaque value provided by the application will be passed as the first
+   parameter for calls of zalloc and zfree. This can be useful for custom
+   memory management. The compression library attaches no meaning to the
+   opaque value.
+
+   zalloc must return Z_NULL if there is not enough memory for the object.
+   If zlib is used in a multi-threaded application, zalloc and zfree must be
+   thread safe.
+
+   On 16-bit systems, the functions zalloc and zfree must be able to allocate
+   exactly 65536 bytes, but will not be required to allocate more than this
+   if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
+   pointers returned by zalloc for objects of exactly 65536 bytes *must*
+   have their offset normalized to zero. The default allocation function
+   provided by this library ensures this (see zutil.c). To reduce memory
+   requirements and avoid any allocation of 64K objects, at the expense of
+   compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
+
+   The fields total_in and total_out can be used for statistics or
+   progress reports. After compression, total_in holds the total size of
+   the uncompressed data and may be saved for use in the decompressor
+   (particularly if the decompressor wants to decompress everything in
+   a single step).
+*/
+
+                        /* constants */
+
+#define Z_NO_FLUSH      0
+#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
+#define Z_SYNC_FLUSH    2
+#define Z_FULL_FLUSH    3
+#define Z_FINISH        4
+/* Allowed flush values; see deflate() below for details */
+
+#define Z_OK            0
+#define Z_STREAM_END    1
+#define Z_NEED_DICT     2
+#define Z_ERRNO        (-1)
+#define Z_STREAM_ERROR (-2)
+#define Z_DATA_ERROR   (-3)
+#define Z_MEM_ERROR    (-4)
+#define Z_BUF_ERROR    (-5)
+#define Z_VERSION_ERROR (-6)
+/* Return codes for the compression/decompression functions. Negative
+ * values are errors, positive values are used for special but normal events.
+ */
+
+#define Z_NO_COMPRESSION         0
+#define Z_BEST_SPEED             1
+#define Z_BEST_COMPRESSION       9
+#define Z_DEFAULT_COMPRESSION  (-1)
+/* compression levels */
+
+#define Z_FILTERED            1
+#define Z_HUFFMAN_ONLY        2
+#define Z_DEFAULT_STRATEGY    0
+/* compression strategy; see deflateInit2() below for details */
+
+#define Z_BINARY   0
+#define Z_ASCII    1
+#define Z_UNKNOWN  2
+/* Possible values of the data_type field */
+
+#define Z_DEFLATED   8
+/* The deflate compression method (the only one supported in this version) */
+
+#define Z_NULL  0  /* for initializing zalloc, zfree, opaque */
+
+#define zlib_version zlibVersion()
+/* for compatibility with versions < 1.0.2 */
+
+                        /* basic functions */
+
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
+   If the first character differs, the library code actually used is
+   not compatible with the zlib.h header file used by the application.
+   This check is automatically made by deflateInit and inflateInit.
+ */
+
+/* 
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
+
+     Initializes the internal stream state for compression. The fields
+   zalloc, zfree and opaque must be initialized before by the caller.
+   If zalloc and zfree are set to Z_NULL, deflateInit updates them to
+   use default allocation functions.
+
+     The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
+   1 gives best speed, 9 gives best compression, 0 gives no compression at
+   all (the input data is simply copied a block at a time).
+   Z_DEFAULT_COMPRESSION requests a default compromise between speed and
+   compression (currently equivalent to level 6).
+
+     deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if level is not a valid compression level,
+   Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
+   with the version assumed by the caller (ZLIB_VERSION).
+   msg is set to null if there is no error message.  deflateInit does not
+   perform any compression: this will be done by deflate().
+*/
+
+
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
+/*
+    deflate compresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may introduce some
+  output latency (reading input without producing any output) except when
+  forced to flush.
+
+    The detailed semantics are as follows. deflate performs one or both of the
+  following actions:
+
+  - Compress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in and avail_in are updated and
+    processing will resume at this point for the next call of deflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly. This action is forced if the parameter flush is non zero.
+    Forcing flush frequently degrades the compression ratio, so this parameter
+    should be set only when necessary (in interactive applications).
+    Some output may be provided even if flush is not set.
+
+  Before the call of deflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating avail_in or avail_out accordingly; avail_out
+  should never be zero before the call. The application can consume the
+  compressed output when it wants, for example when the output buffer is full
+  (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK
+  and with zero avail_out, it must be called again after making room in the
+  output buffer because there might be more output pending.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
+  flushed to the output buffer and the output is aligned on a byte boundary, so
+  that the decompressor can get all input data available so far. (In particular
+  avail_in is zero after the call if enough output space has been provided
+  before the call.)  Flushing may degrade compression for some compression
+  algorithms and so it should be used only when necessary.
+
+    If flush is set to Z_FULL_FLUSH, all output is flushed as with
+  Z_SYNC_FLUSH, and the compression state is reset so that decompression can
+  restart from this point if previous compressed data has been damaged or if
+  random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
+  the compression.
+
+    If deflate returns with avail_out == 0, this function must be called again
+  with the same value of the flush parameter and more output space (updated
+  avail_out), until the flush is complete (deflate returns with non-zero
+  avail_out).
+
+    If the parameter flush is set to Z_FINISH, pending input is processed,
+  pending output is flushed and deflate returns with Z_STREAM_END if there
+  was enough output space; if deflate returns with Z_OK, this function must be
+  called again with Z_FINISH and more output space (updated avail_out) but no
+  more input data, until it returns with Z_STREAM_END or an error. After
+  deflate has returned Z_STREAM_END, the only possible operations on the
+  stream are deflateReset or deflateEnd.
+  
+    Z_FINISH can be used immediately after deflateInit if all the compression
+  is to be done in a single step. In this case, avail_out must be at least
+  0.1% larger than avail_in plus 12 bytes.  If deflate does not return
+  Z_STREAM_END, then it must be called again as described above.
+
+    deflate() sets strm->adler to the adler32 checksum of all input read
+  so far (that is, total_in bytes).
+
+    deflate() may update data_type if it can make a good guess about
+  the input data type (Z_ASCII or Z_BINARY). In doubt, the data is considered
+  binary. This field is only for information purposes and does not affect
+  the compression algorithm in any manner.
+
+    deflate() returns Z_OK if some progress has been made (more input
+  processed or more output produced), Z_STREAM_END if all input has been
+  consumed and all output has been produced (only when flush is set to
+  Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
+  if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
+  (for example avail_in or avail_out was zero).
+*/
+
+
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
+   stream state was inconsistent, Z_DATA_ERROR if the stream was freed
+   prematurely (some input or output was discarded). In the error case,
+   msg may be set but then points to a static string (which must not be
+   deallocated).
+*/
+
+
+/* 
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
+
+     Initializes the internal stream state for decompression. The fields
+   next_in, avail_in, zalloc, zfree and opaque must be initialized before by
+   the caller. If next_in is not Z_NULL and avail_in is large enough (the exact
+   value depends on the compression method), inflateInit determines the
+   compression method from the zlib header and allocates all data structures
+   accordingly; otherwise the allocation will be deferred to the first call of
+   inflate.  If zalloc and zfree are set to Z_NULL, inflateInit updates them to
+   use default allocation functions.
+
+     inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
+   version assumed by the caller.  msg is set to null if there is no error
+   message. inflateInit does not perform any decompression apart from reading
+   the zlib header if present: this will be done by inflate().  (So next_in and
+   avail_in may be modified, but next_out and avail_out are unchanged.)
+*/
+
+
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
+/*
+    inflate decompresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may some
+  introduce some output latency (reading input without producing any output)
+  except when forced to flush.
+
+  The detailed semantics are as follows. inflate performs one or both of the
+  following actions:
+
+  - Decompress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in is updated and processing
+    will resume at this point for the next call of inflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly.  inflate() provides as much output as possible, until there
+    is no more input data or no more space in the output buffer (see below
+    about the flush parameter).
+
+  Before the call of inflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating the next_* and avail_* values accordingly.
+  The application can consume the uncompressed output when it wants, for
+  example when the output buffer is full (avail_out == 0), or after each
+  call of inflate(). If inflate returns Z_OK and with zero avail_out, it
+  must be called again after making room in the output buffer because there
+  might be more output pending.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, inflate flushes as much
+  output as possible to the output buffer. The flushing behavior of inflate is
+  not specified for values of the flush parameter other than Z_SYNC_FLUSH
+  and Z_FINISH, but the current implementation actually flushes as much output
+  as possible anyway.
+
+    inflate() should normally be called until it returns Z_STREAM_END or an
+  error. However if all decompression is to be performed in a single step
+  (a single call of inflate), the parameter flush should be set to
+  Z_FINISH. In this case all pending input is processed and all pending
+  output is flushed; avail_out must be large enough to hold all the
+  uncompressed data. (The size of the uncompressed data may have been saved
+  by the compressor for this purpose.) The next operation on this stream must
+  be inflateEnd to deallocate the decompression state. The use of Z_FINISH
+  is never required, but can be used to inform inflate that a faster routine
+  may be used for the single inflate() call.
+
+     If a preset dictionary is needed at this point (see inflateSetDictionary
+  below), inflate sets strm-adler to the adler32 checksum of the
+  dictionary chosen by the compressor and returns Z_NEED_DICT; otherwise 
+  it sets strm->adler to the adler32 checksum of all output produced
+  so far (that is, total_out bytes) and returns Z_OK, Z_STREAM_END or
+  an error code as described below. At the end of the stream, inflate()
+  checks that its computed adler32 checksum is equal to that saved by the
+  compressor and returns Z_STREAM_END only if the checksum is correct.
+
+    inflate() returns Z_OK if some progress has been made (more input processed
+  or more output produced), Z_STREAM_END if the end of the compressed data has
+  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
+  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
+  corrupted (input stream not conforming to the zlib format or incorrect
+  adler32 checksum), Z_STREAM_ERROR if the stream structure was inconsistent
+  (for example if next_in or next_out was NULL), Z_MEM_ERROR if there was not
+  enough memory, Z_BUF_ERROR if no progress is possible or if there was not
+  enough room in the output buffer when Z_FINISH is used. In the Z_DATA_ERROR
+  case, the application may then call inflateSync to look for a good
+  compression block.
+*/
+
+
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
+   was inconsistent. In the error case, msg may be set but then points to a
+   static string (which must not be deallocated).
+*/
+
+                        /* Advanced functions */
+
+/*
+    The following functions are needed only in some special applications.
+*/
+
+/*   
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
+                                     int  level,
+                                     int  method,
+                                     int  windowBits,
+                                     int  memLevel,
+                                     int  strategy));
+
+     This is another version of deflateInit with more compression options. The
+   fields next_in, zalloc, zfree and opaque must be initialized before by
+   the caller.
+
+     The method parameter is the compression method. It must be Z_DEFLATED in
+   this version of the library.
+
+     The windowBits parameter is the base two logarithm of the window size
+   (the size of the history buffer).  It should be in the range 8..15 for this
+   version of the library. Larger values of this parameter result in better
+   compression at the expense of memory usage. The default value is 15 if
+   deflateInit is used instead.
+
+     The memLevel parameter specifies how much memory should be allocated
+   for the internal compression state. memLevel=1 uses minimum memory but
+   is slow and reduces compression ratio; memLevel=9 uses maximum memory
+   for optimal speed. The default value is 8. See zconf.h for total memory
+   usage as a function of windowBits and memLevel.
+
+     The strategy parameter is used to tune the compression algorithm. Use the
+   value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
+   filter (or predictor), or Z_HUFFMAN_ONLY to force Huffman encoding only (no
+   string match).  Filtered data consists mostly of small values with a
+   somewhat random distribution. In this case, the compression algorithm is
+   tuned to compress them better. The effect of Z_FILTERED is to force more
+   Huffman coding and less string matching; it is somewhat intermediate
+   between Z_DEFAULT and Z_HUFFMAN_ONLY. The strategy parameter only affects
+   the compression ratio but not the correctness of the compressed output even
+   if it is not set appropriately.
+
+      deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid
+   method). msg is set to null if there is no error message.  deflateInit2 does
+   not perform any compression: this will be done by deflate().
+*/
+                            
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the compression dictionary from the given byte sequence
+   without producing any compressed output. This function must be called
+   immediately after deflateInit, deflateInit2 or deflateReset, before any
+   call of deflate. The compressor and decompressor must use exactly the same
+   dictionary (see inflateSetDictionary).
+
+     The dictionary should consist of strings (byte sequences) that are likely
+   to be encountered later in the data to be compressed, with the most commonly
+   used strings preferably put towards the end of the dictionary. Using a
+   dictionary is most useful when the data to be compressed is short and can be
+   predicted with good accuracy; the data can then be compressed better than
+   with the default empty dictionary.
+
+     Depending on the size of the compression data structures selected by
+   deflateInit or deflateInit2, a part of the dictionary may in effect be
+   discarded, for example if the dictionary is larger than the window size in
+   deflate or deflate2. Thus the strings most likely to be useful should be
+   put at the end of the dictionary, not at the front.
+
+     Upon return of this function, strm->adler is set to the Adler32 value
+   of the dictionary; the decompressor may later use this value to determine
+   which dictionary has been used by the compressor. (The Adler32 value
+   applies to the whole dictionary even if only a subset of the dictionary is
+   actually used by the compressor.)
+
+     deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
+   parameter is invalid (such as NULL dictionary) or the stream state is
+   inconsistent (for example if deflate has already been called for this stream
+   or if the compression method is bsort). deflateSetDictionary does not
+   perform any compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+                                    z_streamp source));
+/*
+     Sets the destination stream as a complete copy of the source stream.
+
+     This function can be useful when several compression strategies will be
+   tried, for example when there are several ways of pre-processing the input
+   data with a filter. The streams that will be discarded should then be freed
+   by calling deflateEnd.  Note that deflateCopy duplicates the internal
+   compression state which can be quite large, so this strategy is slow and
+   can consume lots of memory.
+
+     deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+   (such as zalloc being NULL). msg is left unchanged in both source and
+   destination.
+*/
+
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to deflateEnd followed by deflateInit,
+   but does not free and reallocate all the internal compression state.
+   The stream will keep the same compression level and any other attributes
+   that may have been set by deflateInit2.
+
+      deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+                                     int level,
+                                     int strategy));
+/*
+     Dynamically update the compression level and compression strategy.  The
+   interpretation of level and strategy is as in deflateInit2.  This can be
+   used to switch between compression and straight copy of the input data, or
+   to switch to a different kind of input data requiring a different
+   strategy. If the compression level is changed, the input available so far
+   is compressed with the old level (and may be flushed); the new level will
+   take effect only at the next call of deflate().
+
+     Before the call of deflateParams, the stream state must be set as for
+   a call of deflate(), since the currently available input may have to
+   be compressed and flushed. In particular, strm->avail_out must be non-zero.
+
+     deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
+   stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR
+   if strm->avail_out was zero.
+*/
+
+/*   
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
+                                     int  windowBits));
+
+     This is another version of inflateInit with an extra parameter. The
+   fields next_in, avail_in, zalloc, zfree and opaque must be initialized
+   before by the caller.
+
+     The windowBits parameter is the base two logarithm of the maximum window
+   size (the size of the history buffer).  It should be in the range 8..15 for
+   this version of the library. The default value is 15 if inflateInit is used
+   instead. If a compressed stream with a larger window size is given as
+   input, inflate() will return with the error code Z_DATA_ERROR instead of
+   trying to allocate a larger window.
+
+      inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if a parameter is invalid (such as a negative
+   memLevel). msg is set to null if there is no error message.  inflateInit2
+   does not perform any decompression apart from reading the zlib header if
+   present: this will be done by inflate(). (So next_in and avail_in may be
+   modified, but next_out and avail_out are unchanged.)
+*/
+
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the decompression dictionary from the given uncompressed byte
+   sequence. This function must be called immediately after a call of inflate
+   if this call returned Z_NEED_DICT. The dictionary chosen by the compressor
+   can be determined from the Adler32 value returned by this call of
+   inflate. The compressor and decompressor must use exactly the same
+   dictionary (see deflateSetDictionary).
+
+     inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
+   parameter is invalid (such as NULL dictionary) or the stream state is
+   inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
+   expected one (incorrect Adler32 value). inflateSetDictionary does not
+   perform any decompression: this will be done by subsequent calls of
+   inflate().
+*/
+
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
+/* 
+    Skips invalid compressed data until a full flush point (see above the
+  description of deflate with Z_FULL_FLUSH) can be found, or until all
+  available input is skipped. No output is provided.
+
+    inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
+  if no more input was provided, Z_DATA_ERROR if no flush point has been found,
+  or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
+  case, the application may save the current current value of total_in which
+  indicates where valid compressed data was found. In the error case, the
+  application may repeatedly call inflateSync, providing more input each time,
+  until success or end of the input data.
+*/
+
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to inflateEnd followed by inflateInit,
+   but does not free and reallocate all the internal decompression state.
+   The stream will keep attributes that may have been set by inflateInit2.
+
+      inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+
+                        /* utility functions */
+
+/*
+     The following utility functions are implemented on top of the
+   basic stream-oriented functions. To simplify the interface, some
+   default options are assumed (compression level and memory usage,
+   standard memory allocation functions). The source code of these
+   utility functions can easily be modified if you need special options.
+*/
+
+ZEXTERN int ZEXPORT compress OF((Bytef *dest,   uLongf *destLen,
+                                 const Bytef *source, uLong sourceLen));
+/*
+     Compresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be at least 0.1% larger than
+   sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the
+   compressed buffer.
+     This function can be used to compress a whole file at once if the
+   input file is mmap'ed.
+     compress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer.
+*/
+
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest,   uLongf *destLen,
+                                  const Bytef *source, uLong sourceLen,
+                                  int level));
+/*
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest,   uLongf *destLen,
+                                   const Bytef *source, uLong sourceLen));
+/*
+     Decompresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be large enough to hold the
+   entire uncompressed data. (The size of the uncompressed data must have
+   been saved previously by the compressor and transmitted to the decompressor
+   by some mechanism outside the scope of this compression library.)
+   Upon exit, destLen is the actual size of the compressed buffer.
+     This function can be used to decompress a whole file at once if the
+   input file is mmap'ed.
+
+     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer, or Z_DATA_ERROR if the input data was corrupted.
+*/
+
+
+typedef voidp gzFile;
+
+ZEXTERN gzFile ZEXPORT gzopen  OF((const char *path, const char *mode));
+/*
+     Opens a gzip (.gz) file for reading or writing. The mode parameter
+   is as in fopen ("rb" or "wb") but can also include a compression level
+   ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
+   Huffman only compression as in "wb1h". (See the description
+   of deflateInit2 for more information about the strategy parameter.)
+
+     gzopen can be used to read a file which is not in gzip format; in this
+   case gzread will directly read from the file without decompression.
+
+     gzopen returns NULL if the file could not be opened or if there was
+   insufficient memory to allocate the (de)compression state; errno
+   can be checked to distinguish the two cases (if errno is zero, the
+   zlib error is Z_MEM_ERROR).  */
+
+ZEXTERN gzFile ZEXPORT gzdopen  OF((int fd, const char *mode));
+/*
+     gzdopen() associates a gzFile with the file descriptor fd.  File
+   descriptors are obtained from calls like open, dup, creat, pipe or
+   fileno (in the file has been previously opened with fopen).
+   The mode parameter is as in gzopen.
+     The next call of gzclose on the returned gzFile will also close the
+   file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
+   descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).
+     gzdopen returns NULL if there was insufficient memory to allocate
+   the (de)compression state.
+*/
+
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
+/*
+     Dynamically update the compression level or strategy. See the description
+   of deflateInit2 for the meaning of these parameters.
+     gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
+   opened for writing.
+*/
+
+ZEXTERN int ZEXPORT    gzread  OF((gzFile file, voidp buf, unsigned len));
+/*
+     Reads the given number of uncompressed bytes from the compressed file.
+   If the input file was not in gzip format, gzread copies the given number
+   of bytes into the buffer.
+     gzread returns the number of uncompressed bytes actually read (0 for
+   end of file, -1 for error). */
+
+ZEXTERN int ZEXPORT    gzwrite OF((gzFile file, 
+                                  const voidp buf, unsigned len));
+/*
+     Writes the given number of uncompressed bytes into the compressed file.
+   gzwrite returns the number of uncompressed bytes actually written
+   (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORTVA   gzprintf OF((gzFile file, const char *format, ...));
+/*
+     Converts, formats, and writes the args to the compressed file under
+   control of the format string, as in fprintf. gzprintf returns the number of
+   uncompressed bytes actually written (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
+/*
+      Writes the given null-terminated string to the compressed file, excluding
+   the terminating null character.
+      gzputs returns the number of characters written, or -1 in case of error.
+*/
+
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
+/*
+      Reads bytes from the compressed file until len-1 characters are read, or
+   a newline character is read and transferred to buf, or an end-of-file
+   condition is encountered.  The string is then terminated with a null
+   character.
+      gzgets returns buf, or Z_NULL in case of error.
+*/
+
+ZEXTERN int ZEXPORT    gzputc OF((gzFile file, int c));
+/*
+      Writes c, converted to an unsigned char, into the compressed file.
+   gzputc returns the value that was written, or -1 in case of error.
+*/
+
+ZEXTERN int ZEXPORT    gzgetc OF((gzFile file));
+/*
+      Reads one byte from the compressed file. gzgetc returns this byte
+   or -1 in case of end of file or error.
+*/
+
+ZEXTERN int ZEXPORT    gzflush OF((gzFile file, int flush));
+/*
+     Flushes all pending output into the compressed file. The parameter
+   flush is as in the deflate() function. The return value is the zlib
+   error number (see function gzerror below). gzflush returns Z_OK if
+   the flush parameter is Z_FINISH and all output could be flushed.
+     gzflush should be called only when strictly necessary because it can
+   degrade compression.
+*/
+
+ZEXTERN z_off_t ZEXPORT    gzseek OF((gzFile file,
+                                     z_off_t offset, int whence));
+/* 
+      Sets the starting position for the next gzread or gzwrite on the
+   given compressed file. The offset represents a number of bytes in the
+   uncompressed data stream. The whence parameter is defined as in lseek(2);
+   the value SEEK_END is not supported.
+     If the file is opened for reading, this function is emulated but can be
+   extremely slow. If the file is opened for writing, only forward seeks are
+   supported; gzseek then compresses a sequence of zeroes up to the new
+   starting position.
+
+      gzseek returns the resulting offset location as measured in bytes from
+   the beginning of the uncompressed stream, or -1 in case of error, in
+   particular if the file is opened for writing and the new starting position
+   would be before the current position.
+*/
+
+ZEXTERN int ZEXPORT    gzrewind OF((gzFile file));
+/*
+     Rewinds the given file. This function is supported only for reading.
+
+   gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
+*/
+
+ZEXTERN z_off_t ZEXPORT    gztell OF((gzFile file));
+/*
+     Returns the starting position for the next gzread or gzwrite on the
+   given compressed file. This position represents a number of bytes in the
+   uncompressed data stream.
+
+   gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
+*/
+
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));
+/*
+     Returns 1 when EOF has previously been detected reading the given
+   input stream, otherwise zero.
+*/
+
+ZEXTERN int ZEXPORT    gzclose OF((gzFile file));
+/*
+     Flushes all pending output if necessary, closes the compressed file
+   and deallocates all the (de)compression state. The return value is the zlib
+   error number (see function gzerror below).
+*/
+
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
+/*
+     Returns the error message for the last error which occurred on the
+   given compressed file. errnum is set to zlib error number. If an
+   error occurred in the file system and not in the compression library,
+   errnum is set to Z_ERRNO and the application may consult errno
+   to get the exact error code.
+*/
+
+                        /* checksum functions */
+
+/*
+     These functions are not related to compression but are exported
+   anyway because they might be useful in applications using the
+   compression library.
+*/
+
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+
+/*
+     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
+   return the updated checksum. If buf is NULL, this function returns
+   the required initial value for the checksum.
+   An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
+   much faster. Usage example:
+
+     uLong adler = adler32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       adler = adler32(adler, buffer, length);
+     }
+     if (adler != original_adler) error();
+*/
+
+ZEXTERN uLong ZEXPORT crc32   OF((uLong crc, const Bytef *buf, uInt len));
+/*
+     Update a running crc with the bytes buf[0..len-1] and return the updated
+   crc. If buf is NULL, this function returns the required initial value
+   for the crc. Pre- and post-conditioning (one's complement) is performed
+   within this function so it shouldn't be done by the application.
+   Usage example:
+
+     uLong crc = crc32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       crc = crc32(crc, buffer, length);
+     }
+     if (crc != original_crc) error();
+*/
+
+
+                        /* various hacks, don't look :) */
+
+/* deflateInit and inflateInit are macros to allow checking the zlib version
+ * and the compiler's view of z_stream:
+ */
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int  level, int  method,
+                                      int windowBits, int memLevel,
+                                      int strategy, const char *version,
+                                      int stream_size));
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int  windowBits,
+                                      const char *version, int stream_size));
+#define deflateInit(strm, level) \
+        deflateInit_((strm), (level),       ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit(strm) \
+        inflateInit_((strm),                ZLIB_VERSION, sizeof(z_stream))
+#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
+        deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
+                      (strategy),           ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit2(strm, windowBits) \
+        inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
+
+
+#if !defined(_Z_UTIL_H) && !defined(NO_DUMMY_DECL)
+    struct internal_state {int dummy;}; /* hack for buggy compilers */
+#endif
+
+ZEXTERN const char   * ZEXPORT zError           OF((int err));
+ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp z));
+ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ZLIB_H */
diff -druN linux-noipsec/net/ipsec/zlib/zutil.c linux/net/ipsec/zlib/zutil.c
--- linux-noipsec/net/ipsec/zlib/zutil.c        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/zutil.c        Fri Sep 29 20:51:34 2000
@@ -0,0 +1,227 @@
+/* zutil.c -- target dependent utility functions for the compression library
+ * Copyright (C) 1995-1998 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* @(#) $Id$ */
+
+#include "zutil.h"
+
+#define MY_ZCALLOC
+
+struct internal_state      {int dummy;}; /* for buggy compilers */
+
+#ifndef STDC
+extern void exit OF((int));
+#endif
+
+const char *z_errmsg[10] = {
+"need dictionary",     /* Z_NEED_DICT       2  */
+"stream end",          /* Z_STREAM_END      1  */
+"",                    /* Z_OK              0  */
+"file error",          /* Z_ERRNO         (-1) */
+"stream error",        /* Z_STREAM_ERROR  (-2) */
+"data error",          /* Z_DATA_ERROR    (-3) */
+"insufficient memory", /* Z_MEM_ERROR     (-4) */
+"buffer error",        /* Z_BUF_ERROR     (-5) */
+"incompatible version",/* Z_VERSION_ERROR (-6) */
+""};
+
+
+const char * ZEXPORT zlibVersion()
+{
+    return ZLIB_VERSION;
+}
+
+#ifdef DEBUG
+
+#  ifndef verbose
+#    define verbose 0
+#  endif
+int z_verbose = verbose;
+
+void z_error (m)
+    char *m;
+{
+    fprintf(stderr, "%s\n", m);
+    exit(1);
+}
+#endif
+
+/* exported to allow conversion of error code to string for compress() and
+ * uncompress()
+ */
+const char * ZEXPORT zError(err)
+    int err;
+{
+    return ERR_MSG(err);
+}
+
+
+#ifndef HAVE_MEMCPY
+
+void zmemcpy(dest, source, len)
+    Bytef* dest;
+    const Bytef* source;
+    uInt  len;
+{
+    if (len == 0) return;
+    do {
+        *dest++ = *source++; /* ??? to be unrolled */
+    } while (--len != 0);
+}
+
+int zmemcmp(s1, s2, len)
+    const Bytef* s1;
+    const Bytef* s2;
+    uInt  len;
+{
+    uInt j;
+
+    for (j = 0; j < len; j++) {
+        if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
+    }
+    return 0;
+}
+
+void zmemzero(dest, len)
+    Bytef* dest;
+    uInt  len;
+{
+    if (len == 0) return;
+    do {
+        *dest++ = 0;  /* ??? to be unrolled */
+    } while (--len != 0);
+}
+#endif
+
+#ifdef __TURBOC__
+#if (defined( __BORLANDC__) || !defined(SMALL_MEDIUM)) && !defined(__32BIT__)
+/* Small and medium model in Turbo C are for now limited to near allocation
+ * with reduced MAX_WBITS and MAX_MEM_LEVEL
+ */
+#  define MY_ZCALLOC
+
+/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
+ * and farmalloc(64K) returns a pointer with an offset of 8, so we
+ * must fix the pointer. Warning: the pointer must be put back to its
+ * original form in order to free it, use zcfree().
+ */
+
+#define MAX_PTR 10
+/* 10*64K = 640K */
+
+local int next_ptr = 0;
+
+typedef struct ptr_table_s {
+    voidpf org_ptr;
+    voidpf new_ptr;
+} ptr_table;
+
+local ptr_table table[MAX_PTR];
+/* This table is used to remember the original form of pointers
+ * to large buffers (64K). Such pointers are normalized with a zero offset.
+ * Since MSDOS is not a preemptive multitasking OS, this table is not
+ * protected from concurrent access. This hack doesn't work anyway on
+ * a protected system like OS/2. Use Microsoft C instead.
+ */
+
+voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
+{
+    voidpf buf = opaque; /* just to make some compilers happy */
+    ulg bsize = (ulg)items*size;
+
+    /* If we allocate less than 65520 bytes, we assume that farmalloc
+     * will return a usable pointer which doesn't have to be normalized.
+     */
+    if (bsize < 65520L) {
+        buf = farmalloc(bsize);
+        if (*(ush*)&buf != 0) return buf;
+    } else {
+        buf = farmalloc(bsize + 16L);
+    }
+    if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
+    table[next_ptr].org_ptr = buf;
+
+    /* Normalize the pointer to seg:0 */
+    *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
+    *(ush*)&buf = 0;
+    table[next_ptr++].new_ptr = buf;
+    return buf;
+}
+
+void  zcfree (voidpf opaque, voidpf ptr)
+{
+    int n;
+    if (*(ush*)&ptr != 0) { /* object < 64K */
+        farfree(ptr);
+        return;
+    }
+    /* Find the original pointer */
+    for (n = 0; n < next_ptr; n++) {
+        if (ptr != table[n].new_ptr) continue;
+
+        farfree(table[n].org_ptr);
+        while (++n < next_ptr) {
+            table[n-1] = table[n];
+        }
+        next_ptr--;
+        return;
+    }
+    ptr = opaque; /* just to make some compilers happy */
+    Assert(0, "zcfree: ptr not found");
+}
+#endif
+#endif /* __TURBOC__ */
+
+
+#if defined(M_I86) && !defined(__32BIT__)
+/* Microsoft C in 16-bit mode */
+
+#  define MY_ZCALLOC
+
+#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
+#  define _halloc  halloc
+#  define _hfree   hfree
+#endif
+
+voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
+{
+    if (opaque) opaque = 0; /* to make compiler happy */
+    return _halloc((long)items, size);
+}
+
+void  zcfree (voidpf opaque, voidpf ptr)
+{
+    if (opaque) opaque = 0; /* to make compiler happy */
+    _hfree(ptr);
+}
+
+#endif /* MSC */
+
+
+#ifndef MY_ZCALLOC /* Any system without a special alloc function */
+
+#ifndef STDC
+extern voidp  calloc OF((uInt items, uInt size));
+extern void   free   OF((voidpf ptr));
+#endif
+
+voidpf zcalloc (opaque, items, size)
+    voidpf opaque;
+    unsigned items;
+    unsigned size;
+{
+    if (opaque) items += size - size; /* make compiler happy */
+    return (voidpf)calloc(items, size);
+}
+
+void  zcfree (opaque, ptr)
+    voidpf opaque;
+    voidpf ptr;
+{
+    free(ptr);
+    if (opaque) return; /* make compiler happy */
+}
+
+#endif /* MY_ZCALLOC */
diff -druN linux-noipsec/net/ipsec/zlib/zutil.h linux/net/ipsec/zlib/zutil.h
--- linux-noipsec/net/ipsec/zlib/zutil.h        Thu Jan  1 01:00:00 1970
+++ linux/net/ipsec/zlib/zutil.h        Fri Sep 29 20:51:34 2000
@@ -0,0 +1,223 @@
+/* zutil.h -- internal interface and configuration of the compression library
+ * Copyright (C) 1995-1998 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id$ */
+
+#ifndef _Z_UTIL_H
+#define _Z_UTIL_H
+
+#include "zlib.h"
+
+#include <linux/string.h>
+#define HAVE_MEMCPY
+
+#if 0 // #ifdef STDC
+#  include <stddef.h>
+#  include <string.h>
+#  include <stdlib.h>
+#endif
+#ifdef NO_ERRNO_H
+    extern int errno;
+#else
+#   include <errno.h>
+#endif
+
+#ifndef local
+#  define local static
+#endif
+/* compile with -Dlocal if your debugger can't find static symbols */
+
+typedef unsigned char  uch;
+typedef uch FAR uchf;
+typedef unsigned short ush;
+typedef ush FAR ushf;
+typedef unsigned long  ulg;
+
+extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
+/* (size given to avoid silly warnings with Visual C++) */
+
+#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
+
+#define ERR_RETURN(strm,err) \
+  return (strm->msg = ERR_MSG(err), (err))
+/* To be used only when the state is known to be valid */
+
+        /* common constants */
+
+#ifndef DEF_WBITS
+#  define DEF_WBITS MAX_WBITS
+#endif
+/* default windowBits for decompression. MAX_WBITS is for compression only */
+
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+/* default memLevel */
+
+#define STORED_BLOCK 0
+#define STATIC_TREES 1
+#define DYN_TREES    2
+/* The three kinds of block type */
+
+#define MIN_MATCH  3
+#define MAX_MATCH  258
+/* The minimum and maximum match lengths */
+
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
+
+        /* target dependencies */
+
+#ifdef MSDOS
+#  define OS_CODE  0x00
+#  if defined(__TURBOC__) || defined(__BORLANDC__)
+#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
+       /* Allow compilation with ANSI keywords only enabled */
+       void _Cdecl farfree( void *block );
+       void *_Cdecl farmalloc( unsigned long nbytes );
+#    else
+#     include <alloc.h>
+#    endif
+#  else /* MSC or DJGPP */
+#    include <malloc.h>
+#  endif
+#endif
+
+#ifdef OS2
+#  define OS_CODE  0x06
+#endif
+
+#ifdef WIN32 /* Window 95 & Windows NT */
+#  define OS_CODE  0x0b
+#endif
+
+#if defined(VAXC) || defined(VMS)
+#  define OS_CODE  0x02
+#  define F_OPEN(name, mode) \
+     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
+#endif
+
+#ifdef AMIGA
+#  define OS_CODE  0x01
+#endif
+
+#if defined(ATARI) || defined(atarist)
+#  define OS_CODE  0x05
+#endif
+
+#if defined(MACOS) || defined(TARGET_OS_MAC)
+#  define OS_CODE  0x07
+#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
+#    include <unix.h> /* for fdopen */
+#  else
+#    ifndef fdopen
+#      define fdopen(fd,mode) NULL /* No fdopen() */
+#    endif
+#  endif
+#endif
+
+#ifdef __50SERIES /* Prime/PRIMOS */
+#  define OS_CODE  0x0F
+#endif
+
+#ifdef TOPS20
+#  define OS_CODE  0x0a
+#endif
+
+#if defined(_BEOS_) || defined(RISCOS)
+#  define fdopen(fd,mode) NULL /* No fdopen() */
+#endif
+
+#if (defined(_MSC_VER) && (_MSC_VER > 600))
+#  define fdopen(fd,type)  _fdopen(fd,type)
+#endif
+
+
+        /* Common defaults */
+
+#ifndef OS_CODE
+#  define OS_CODE  0x03  /* assume Unix */
+#endif
+
+#ifndef F_OPEN
+#  define F_OPEN(name, mode) fopen((name), (mode))
+#endif
+
+         /* functions */
+
+#ifdef HAVE_STRERROR
+   extern char *strerror OF((int));
+#  define zstrerror(errnum) strerror(errnum)
+#else
+#  define zstrerror(errnum) ""
+#endif
+
+#if defined(pyr)
+#  define NO_MEMCPY
+#endif
+#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
+ /* Use our own functions for small and medium model with MSC <= 5.0.
+  * You may have to use the same strategy for Borland C (untested).
+  * The __SC__ check is for Symantec.
+  */
+#  define NO_MEMCPY
+#endif
+#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
+#  define HAVE_MEMCPY
+#endif
+#ifdef HAVE_MEMCPY
+#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
+#    define zmemcpy _fmemcpy
+#    define zmemcmp _fmemcmp
+#    define zmemzero(dest, len) _fmemset(dest, 0, len)
+#  else
+#    define zmemcpy memcpy
+#    define zmemcmp memcmp
+#    define zmemzero(dest, len) memset(dest, 0, len)
+#  endif
+#else
+   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
+   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
+   extern void zmemzero OF((Bytef* dest, uInt len));
+#endif
+
+/* Diagnostic functions */
+#ifdef DEBUG
+#  include <stdio.h>
+   extern int z_verbose;
+   extern void z_error    OF((char *m));
+#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
+#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
+#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
+#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+
+typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
+                                      uInt len));
+voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
+void   zcfree  OF((voidpf opaque, voidpf ptr));
+
+#define ZALLOC(strm, items, size) \
+           (*((strm)->zalloc))((strm)->opaque, (items), (size))
+#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
+#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
+
+#endif /* _Z_UTIL_H */
diff -druN linux-noipsec/net/ipv4/af_inet.c linux/net/ipv4/af_inet.c
--- linux-noipsec/net/ipv4/af_inet.c    Fri Dec 15 15:15:47 2000
+++ linux/net/ipv4/af_inet.c    Fri Dec 15 15:18:21 2000
@@ -1149,6 +1149,17 @@
        ip_mr_init();
 #endif
 
+#if defined(CONFIG_IPSEC)
+       {
+               extern /* void */ int ipsec_init(void);
+               /*
+                *  Initialise AF_INET ESP and AH protocol support including 
+                *  e-routing and SA tables
+                */
+               ipsec_init();
+       }
+#endif /* CONFIG_IPSEC */
+
 #ifdef CONFIG_INET_RARP
        rarp_ioctl_hook = rarp_ioctl;
 #endif