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diff -NurpP --minimal linux-2.6.21.a/include/linux/netfilter_ipv4/ipt_IPMARK.h linux-2.6.21.b/include/linux/netfilter_ipv4/ipt_IPMARK.h
--- linux-2.6.21.a/include/linux/netfilter_ipv4/ipt_IPMARK.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.b/include/linux/netfilter_ipv4/ipt_IPMARK.h 2007-05-30 12:01:20.000000000 +0200
@@ -0,0 +1,13 @@
+#ifndef _IPT_IPMARK_H_target
+#define _IPT_IPMARK_H_target
+
+struct ipt_ipmark_target_info {
+ unsigned long andmask;
+ unsigned long ormask;
+ unsigned char addr;
+};
+
+#define IPT_IPMARK_SRC 0
+#define IPT_IPMARK_DST 1
+
+#endif /*_IPT_IPMARK_H_target*/
diff -NurpP --minimal linux-2.6.21.a/net/ipv4/netfilter/Kconfig linux-2.6.21.b/net/ipv4/netfilter/Kconfig
--- linux-2.6.21.a/net/ipv4/netfilter/Kconfig 2007-05-30 12:01:03.000000000 +0200
+++ linux-2.6.21.b/net/ipv4/netfilter/Kconfig 2007-05-30 12:01:20.000000000 +0200
@@ -893,5 +893,23 @@ config IP_NF_RSH
If you want to compile it as a module, say M here and read
<file:Documentation/modules.txt>. If unsure, say `N'.
+config IP_NF_TARGET_IPMARK
+ tristate 'IPMARK target support'
+ depends on IP_NF_MANGLE
+ help
+ This option adds a `IPMARK' target, which allows you to create rules
+ in the `mangle' table which alter the netfilter mark field basing
+ on the source or destination ip address of the packet.
+ This is very useful for very fast massive shaping - using only one
+ rule you can direct packets to houndreds different queues.
+ You will probably find it helpful only if your linux machine acts as
+ a shaper for many others computers.
+
+ If you want to compile it as a module, say M here and read
+ <file:Documentation/modules.txt>. The module will be called
+ ipt_IPMARK.o. If unsure, say `N'.
+
+
+
endmenu
diff -NurpP --minimal linux-2.6.21.a/net/ipv4/netfilter/Makefile linux-2.6.21.b/net/ipv4/netfilter/Makefile
--- linux-2.6.21.a/net/ipv4/netfilter/Makefile 2007-05-30 12:01:03.000000000 +0200
+++ linux-2.6.21.b/net/ipv4/netfilter/Makefile 2007-05-30 12:01:21.000000000 +0200
@@ -118,6 +118,7 @@ obj-$(CONFIG_IP_NF_TARGET_IPV4OPTSSTRIP)
obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
+obj-$(CONFIG_IP_NF_TARGET_IPMARK) += ipt_IPMARK.o
# generic ARP tables
obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o
diff -NurpP --minimal linux-2.6.21.a/net/ipv4/netfilter/ipt_IPMARK.c linux-2.6.21.b/net/ipv4/netfilter/ipt_IPMARK.c
--- linux-2.6.21.a/net/ipv4/netfilter/ipt_IPMARK.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.b/net/ipv4/netfilter/ipt_IPMARK.c 2007-05-30 12:01:21.000000000 +0200
@@ -0,0 +1,96 @@
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/version.h>
+#include <linux/ip.h>
+#include <net/checksum.h>
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_IPMARK.h>
+
+MODULE_AUTHOR("Grzegorz Janoszka <Grzegorz@Janoszka.pl>");
+MODULE_DESCRIPTION("IP tables IPMARK: mark based on ip address");
+MODULE_LICENSE("GPL");
+
+static unsigned int
+target(struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ unsigned int hooknum,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
+ const struct xt_target *target,
+#endif
+ const void *targinfo
+ )
+{
+ const struct ipt_ipmark_target_info *ipmarkinfo = targinfo;
+ struct iphdr *iph = ip_hdr(*pskb);
+ unsigned long mark;
+
+ if (ipmarkinfo->addr == IPT_IPMARK_SRC)
+ mark = (unsigned long) ntohl(iph->saddr);
+ else
+ mark = (unsigned long) ntohl(iph->daddr);
+
+ mark &= ipmarkinfo->andmask;
+ mark |= ipmarkinfo->ormask;
+
+ if ((*pskb)->mark != mark)
+ (*pskb)->mark = mark;
+
+ return IPT_CONTINUE;
+}
+
+static int
+checkentry(const char *tablename,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ const void *e,
+#else
+ const struct ipt_entry *e,
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
+ const struct xt_target *target,
+#endif
+ void *targinfo,
+
+ unsigned int hook_mask)
+{
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
+ if (targinfosize != IPT_ALIGN(sizeof(struct ipt_ipmark_target_info))) {
+ printk(KERN_WARNING "IPMARK: targinfosize %u != %Zu\n",
+ targinfosize,
+ IPT_ALIGN(sizeof(struct ipt_ipmark_target_info)));
+ return 0;
+ }
+#endif
+
+ if (strcmp(tablename, "mangle") != 0) {
+ printk(KERN_WARNING "IPMARK: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct ipt_target ipt_ipmark_reg = {
+ .name = "IPMARK",
+ .target = target,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
+ .targetsize = sizeof(struct ipt_ipmark_target_info),
+#endif
+ .checkentry = checkentry,
+ .me = THIS_MODULE
+};
+
+static int __init init(void)
+{
+ return xt_register_target(&ipt_ipmark_reg);
+}
+
+static void __exit fini(void)
+{
+ xt_unregister_target(&ipt_ipmark_reg);
+}
+
+module_init(init);
+module_exit(fini);
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