-diff -uNr linux-3.1/drivers/net/imq.c linux-3.1-imq/drivers/net/imq.c
---- linux-3.1/drivers/net/imq.c 1970-01-01 02:00:00.000000000 +0200
-+++ linux-3.1-imq/drivers/net/imq.c 2011-11-04 12:16:10.454992642 +0200
-@@ -0,0 +1,850 @@
+net: add Intermediate Queueing Device (imq)
+
+From: Jussi Kivilinna <jussi.kivilinna@iki.fi>
+
+This patch is for kernel version 3.12.4+.
+
+See: http://linuximq.net/
+
+Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
+---
+ drivers/net/Kconfig | 119 ++++
+ drivers/net/Makefile | 1
+ drivers/net/imq.c | 1007 +++++++++++++++++++++++++++++++
+ include/linux/imq.h | 13
+ include/linux/netfilter/xt_IMQ.h | 9
+ include/linux/netfilter_ipv4/ipt_IMQ.h | 10
+ include/linux/netfilter_ipv6/ip6t_IMQ.h | 10
+ include/linux/skbuff.h | 22 +
+ include/net/netfilter/nf_queue.h | 6
+ include/uapi/linux/netfilter.h | 3
+ net/core/dev.c | 8
+ net/core/skbuff.c | 112 +++
+ net/ipv6/ip6_output.c | 10
+ net/netfilter/Kconfig | 12
+ net/netfilter/Makefile | 1
+ net/netfilter/core.c | 6
+ net/netfilter/nf_internals.h | 2
+ net/netfilter/nf_queue.c | 36 +
+ net/netfilter/xt_IMQ.c | 72 ++
+ 19 files changed, 1449 insertions(+), 10 deletions(-)
+ create mode 100644 drivers/net/imq.c
+ create mode 100644 include/linux/imq.h
+ create mode 100644 include/linux/netfilter/xt_IMQ.h
+ create mode 100644 include/linux/netfilter_ipv4/ipt_IMQ.h
+ create mode 100644 include/linux/netfilter_ipv6/ip6t_IMQ.h
+ create mode 100644 net/netfilter/xt_IMQ.c
+
+diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
+index b45b240..5a20da0 100644
+--- a/drivers/net/Kconfig
++++ b/drivers/net/Kconfig
+@@ -203,6 +203,125 @@ config RIONET_RX_SIZE
+ depends on RIONET
+ default "128"
+
++config IMQ
++ tristate "IMQ (intermediate queueing device) support"
++ depends on NETDEVICES && NETFILTER
++ ---help---
++ The IMQ device(s) is used as placeholder for QoS queueing
++ disciplines. Every packet entering/leaving the IP stack can be
++ directed through the IMQ device where it's enqueued/dequeued to the
++ attached qdisc. This allows you to treat network devices as classes
++ and distribute bandwidth among them. Iptables is used to specify
++ through which IMQ device, if any, packets travel.
++
++ More information at: http://www.linuximq.net/
++
++ To compile this driver as a module, choose M here: the module
++ will be called imq. If unsure, say N.
++
++choice
++ prompt "IMQ behavior (PRE/POSTROUTING)"
++ depends on IMQ
++ default IMQ_BEHAVIOR_AB
++ help
++ This setting defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ IMQ can work in any of the following ways:
++
++ PREROUTING | POSTROUTING
++ -----------------|-------------------
++ #1 After NAT | After NAT
++ #2 After NAT | Before NAT
++ #3 Before NAT | After NAT
++ #4 Before NAT | Before NAT
++
++ The default behavior is to hook before NAT on PREROUTING
++ and after NAT on POSTROUTING (#3).
++
++ This settings are specially usefull when trying to use IMQ
++ to shape NATed clients.
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_AA
++ bool "IMQ AA"
++ help
++ This setting defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: After NAT
++ POSTROUTING: After NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_AB
++ bool "IMQ AB"
++ help
++ This setting defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: After NAT
++ POSTROUTING: Before NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_BA
++ bool "IMQ BA"
++ help
++ This setting defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: Before NAT
++ POSTROUTING: After NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_BB
++ bool "IMQ BB"
++ help
++ This setting defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: Before NAT
++ POSTROUTING: Before NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++endchoice
++
++config IMQ_NUM_DEVS
++ int "Number of IMQ devices"
++ range 2 16
++ depends on IMQ
++ default "16"
++ help
++ This setting defines how many IMQ devices will be created.
++
++ The default value is 16.
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
+ config TUN
+ tristate "Universal TUN/TAP device driver support"
+ select CRC32
+diff --git a/drivers/net/Makefile b/drivers/net/Makefile
+index 3fef8a8..12dafc0 100644
+--- a/drivers/net/Makefile
++++ b/drivers/net/Makefile
+@@ -9,6 +9,7 @@ obj-$(CONFIG_BONDING) += bonding/
+ obj-$(CONFIG_DUMMY) += dummy.o
+ obj-$(CONFIG_EQUALIZER) += eql.o
+ obj-$(CONFIG_IFB) += ifb.o
++obj-$(CONFIG_IMQ) += imq.o
+ obj-$(CONFIG_MACVLAN) += macvlan.o
+ obj-$(CONFIG_MACVTAP) += macvtap.o
+ obj-$(CONFIG_MII) += mii.o
+diff --git a/drivers/net/imq.c b/drivers/net/imq.c
+new file mode 100644
+index 0000000..801bc8c
+--- /dev/null
++++ b/drivers/net/imq.c
+@@ -0,0 +1,1012 @@
+/*
+ * Pseudo-driver for the intermediate queue device.
+ *
+ * - Clean-up, move 'get imq device pointer by imqX name' to
+ * separate function from imq_nf_queue().
+ *
++ * 2012/01/05 - Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
++ * - Port to 3.2
++ *
++ * 2012/03/19 - Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
++ * - Port to 3.3
++ *
++ * 2012/12/12 - Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
++ * - Port to 3.7
++ * - Fix checkpatch.pl warnings
++ *
++ * 2013/09/10 - Jussi Kivilinna <jussi.kivilinna@iki.fi>
++ * - Fixed GSO handling for 3.10, see imq_nf_queue() for comments.
++ * - Don't copy skb->cb_next when copying or cloning skbuffs.
++ *
++ * 2013/09/16 - Jussi Kivilinna <jussi.kivilinna@iki.fi>
++ * - Port to 3.11
++ *
++ * 2013/11/12 - Jussi Kivilinna <jussi.kivilinna@iki.fi>
++ * - Port to 3.12
++ *
+ * Also, many thanks to pablo Sebastian Greco for making the initial
+ * patch and to those who helped the testing.
+ *
+
+static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num);
+
-+static nf_hookfn imq_nf_hook;
++static unsigned int imq_nf_hook(const struct nf_hook_ops *ops,
++ struct sk_buff *pskb,
++ const struct net_device *indev,
++ const struct net_device *outdev,
++ int (*okfn)(struct sk_buff *));
+
+static struct nf_hook_ops imq_ops[] = {
+ {
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ case htons(ETH_P_IPV6): {
+ const struct ipv6hdr *iph = ipv6_hdr(skb);
-+ __be16 frag_off;
++ __be16 fo = 0;
++
+ if (unlikely(!pskb_may_pull(skb, sizeof(struct ipv6hdr))))
+ goto other;
+
+ addr1 = iph->daddr.s6_addr32[3];
+ addr2 = iph->saddr.s6_addr32[3];
-+ ihl = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &ip_proto, &frag_off);
++ ihl = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &ip_proto,
++ &fo);
+ if (unlikely(ihl < 0))
+ goto other;
+
+ return dev;
+}
+
++static struct nf_queue_entry *nf_queue_entry_dup(struct nf_queue_entry *e)
++{
++ struct nf_queue_entry *entry = kmemdup(e, e->size, GFP_ATOMIC);
++ if (entry) {
++ if (nf_queue_entry_get_refs(entry))
++ return entry;
++ kfree(entry);
++ }
++ return NULL;
++}
++
++#ifdef CONFIG_BRIDGE_NETFILTER
++/* When called from bridge netfilter, skb->data must point to MAC header
++ * before calling skb_gso_segment(). Else, original MAC header is lost
++ * and segmented skbs will be sent to wrong destination.
++ */
++static void nf_bridge_adjust_skb_data(struct sk_buff *skb)
++{
++ if (skb->nf_bridge)
++ __skb_push(skb, skb->network_header - skb->mac_header);
++}
++
++static void nf_bridge_adjust_segmented_data(struct sk_buff *skb)
++{
++ if (skb->nf_bridge)
++ __skb_pull(skb, skb->network_header - skb->mac_header);
++}
++#else
++#define nf_bridge_adjust_skb_data(s) do {} while (0)
++#define nf_bridge_adjust_segmented_data(s) do {} while (0)
++#endif
++
++static void free_entry(struct nf_queue_entry *entry)
++{
++ nf_queue_entry_release_refs(entry);
++ kfree(entry);
++}
++
++static int __imq_nf_queue(struct nf_queue_entry *entry, struct net_device *dev);
++
++static int __imq_nf_queue_gso(struct nf_queue_entry *entry,
++ struct net_device *dev, struct sk_buff *skb)
++{
++ int ret = -ENOMEM;
++ struct nf_queue_entry *entry_seg;
++
++ nf_bridge_adjust_segmented_data(skb);
++
++ if (skb->next == NULL) { /* last packet, no need to copy entry */
++ struct sk_buff *gso_skb = entry->skb;
++ entry->skb = skb;
++ ret = __imq_nf_queue(entry, dev);
++ if (ret)
++ entry->skb = gso_skb;
++ return ret;
++ }
++
++ skb->next = NULL;
++
++ entry_seg = nf_queue_entry_dup(entry);
++ if (entry_seg) {
++ entry_seg->skb = skb;
++ ret = __imq_nf_queue(entry_seg, dev);
++ if (ret)
++ free_entry(entry_seg);
++ }
++ return ret;
++}
++
+static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num)
+{
++ struct sk_buff *skb, *segs;
+ struct net_device *dev;
-+ struct sk_buff *skb_orig, *skb, *skb_shared;
-+ struct Qdisc *q;
-+ struct netdev_queue *txq;
-+ spinlock_t *root_lock;
-+ int users, index;
-+ int retval = -EINVAL;
-+ unsigned int orig_queue_index;
++ unsigned int queued;
++ int index, retval, err;
+
+ index = entry->skb->imq_flags & IMQ_F_IFMASK;
+ if (unlikely(index > numdevs - 1)) {
+ if (net_ratelimit())
-+ printk(KERN_WARNING
-+ "IMQ: invalid device specified, highest is %u\n",
-+ numdevs - 1);
++ pr_warn("IMQ: invalid device specified, highest is %u\n",
++ numdevs - 1);
+ retval = -EINVAL;
-+ goto out;
++ goto out_no_dev;
+ }
+
+ /* check for imq device by index from cache */
+ dev = get_imq_device_by_index(index);
+ if (IS_ERR(dev)) {
+ retval = PTR_ERR(dev);
-+ goto out;
++ goto out_no_dev;
+ }
+ }
+
+ if (unlikely(!(dev->flags & IFF_UP))) {
+ entry->skb->imq_flags = 0;
-+ nf_reinject(entry, NF_ACCEPT);
-+ retval = 0;
-+ goto out;
++ retval = -ECANCELED;
++ goto out_no_dev;
+ }
++
++ if (!skb_is_gso(entry->skb))
++ return __imq_nf_queue(entry, dev);
++
++ /* Since 3.10.x, GSO handling moved here as result of upstream commit
++ * a5fedd43d5f6c94c71053a66e4c3d2e35f1731a2 (netfilter: move
++ * skb_gso_segment into nfnetlink_queue module).
++ *
++ * Following code replicates the gso handling from
++ * 'net/netfilter/nfnetlink_queue_core.c':nfqnl_enqueue_packet().
++ */
++
++ skb = entry->skb;
++
++ switch (entry->pf) {
++ case NFPROTO_IPV4:
++ skb->protocol = htons(ETH_P_IP);
++ break;
++ case NFPROTO_IPV6:
++ skb->protocol = htons(ETH_P_IPV6);
++ break;
++ }
++
++ nf_bridge_adjust_skb_data(skb);
++ segs = skb_gso_segment(skb, 0);
++ /* Does not use PTR_ERR to limit the number of error codes that can be
++ * returned by nf_queue. For instance, callers rely on -ECANCELED to
++ * mean 'ignore this hook'.
++ */
++ err = -ENOBUFS;
++ if (IS_ERR(segs))
++ goto out_err;
++ queued = 0;
++ err = 0;
++ do {
++ struct sk_buff *nskb = segs->next;
++ if (nskb && nskb->next)
++ nskb->cb_next = NULL;
++ if (err == 0)
++ err = __imq_nf_queue_gso(entry, dev, segs);
++ if (err == 0)
++ queued++;
++ else
++ kfree_skb(segs);
++ segs = nskb;
++ } while (segs);
++
++ if (queued) {
++ if (err) /* some segments are already queued */
++ free_entry(entry);
++ kfree_skb(skb);
++ return 0;
++ }
++
++out_err:
++ nf_bridge_adjust_segmented_data(skb);
++ retval = err;
++out_no_dev:
++ return retval;
++}
++
++static int __imq_nf_queue(struct nf_queue_entry *entry, struct net_device *dev)
++{
++ struct sk_buff *skb_orig, *skb, *skb_shared;
++ struct Qdisc *q;
++ struct netdev_queue *txq;
++ spinlock_t *root_lock;
++ int users;
++ int retval = -EINVAL;
++ unsigned int orig_queue_index;
++
+ dev->last_rx = jiffies;
+
+ skb = entry->skb;
+ retval = -ENOMEM;
+ goto out;
+ }
++ skb->cb_next = NULL;
+ entry->skb = skb;
+ }
+
+ users = atomic_read(&skb->users);
+
+ skb_shared = skb_get(skb); /* increase reference count by one */
-+ skb_save_cb(skb_shared); /* backup skb->cb, as qdisc layer will
-+ overwrite it */
++
++ /* backup skb->cb, as qdisc layer will overwrite it */
++ skb_save_cb(skb_shared);
+ qdisc_enqueue_root(skb_shared, q); /* might kfree_skb */
+
+ if (likely(atomic_read(&skb_shared->users) == users + 1)) {
+ } else {
+ skb_restore_cb(skb_shared); /* restore skb->cb */
+ skb->nf_queue_entry = NULL;
-+ /* qdisc dropped packet and decreased skb reference count of
++ /*
++ * qdisc dropped packet and decreased skb reference count of
+ * skb, so we don't really want to and try refree as that would
-+ * actually destroy the skb. */
++ * actually destroy the skb.
++ */
+ spin_unlock(root_lock);
+ goto packet_not_eaten_by_imq_dev;
+ }
+ return retval;
+}
+
-+static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
++static unsigned int imq_nf_hook(const struct nf_hook_ops *ops,
++ struct sk_buff *pskb,
+ const struct net_device *indev,
+ const struct net_device *outdev,
+ int (*okfn)(struct sk_buff *))
+ }
+ return 0;
+end:
-+ printk(KERN_WARNING "IMQ: imq_validate failed (%d)\n", ret);
++ pr_warn("IMQ: imq_validate failed (%d)\n", ret);
+ return ret;
+}
+
+};
+
+static const struct nf_queue_handler imq_nfqh = {
-+ .name = "imq",
+ .outfn = imq_nf_queue,
+};
+
+ int err, i;
+
+ if (numdevs < 1 || numdevs > IMQ_MAX_DEVS) {
-+ printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
++ pr_err("IMQ: numdevs has to be betweed 1 and %u\n",
+ IMQ_MAX_DEVS);
+ return -EINVAL;
+ }
+
+ if (numqueues < 1 || numqueues > IMQ_MAX_QUEUES) {
-+ printk(KERN_ERR "IMQ: numqueues has to be betweed 1 and %u\n",
++ pr_err("IMQ: numqueues has to be betweed 1 and %u\n",
+ IMQ_MAX_QUEUES);
+ return -EINVAL;
+ }
+
+ err = imq_init_devs();
+ if (err) {
-+ printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
++ pr_err("IMQ: Error trying imq_init_devs(net)\n");
+ return err;
+ }
+
+ err = imq_init_hooks();
+ if (err) {
-+ printk(KERN_ERR "IMQ: Error trying imq_init_hooks()\n");
++ pr_err(KERN_ERR "IMQ: Error trying imq_init_hooks()\n");
+ rtnl_link_unregister(&imq_link_ops);
+ memset(imq_devs_cache, 0, sizeof(imq_devs_cache));
+ return err;
+ }
+
-+ printk(KERN_INFO "IMQ driver loaded successfully. "
-+ "(numdevs = %d, numqueues = %d)\n", numdevs, numqueues);
++ pr_info("IMQ driver loaded successfully. (numdevs = %d, numqueues = %d)\n",
++ numdevs, numqueues);
+
+#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
-+ printk(KERN_INFO "\tHooking IMQ before NAT on PREROUTING.\n");
++ pr_info("\tHooking IMQ before NAT on PREROUTING.\n");
+#else
-+ printk(KERN_INFO "\tHooking IMQ after NAT on PREROUTING.\n");
++ pr_info("\tHooking IMQ after NAT on PREROUTING.\n");
+#endif
+#if defined(CONFIG_IMQ_BEHAVIOR_AB) || defined(CONFIG_IMQ_BEHAVIOR_BB)
-+ printk(KERN_INFO "\tHooking IMQ before NAT on POSTROUTING.\n");
++ pr_info("\tHooking IMQ before NAT on POSTROUTING.\n");
+#else
-+ printk(KERN_INFO "\tHooking IMQ after NAT on POSTROUTING.\n");
++ pr_info("\tHooking IMQ after NAT on POSTROUTING.\n");
+#endif
+
+ return 0;
+{
+ imq_unhook();
+ imq_cleanup_devs();
-+ printk(KERN_INFO "IMQ driver unloaded successfully.\n");
++ pr_info("IMQ driver unloaded successfully.\n");
+}
+
+module_init(imq_init_module);
+
+module_param(numdevs, int, 0);
+module_param(numqueues, int, 0);
-+MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will "
-+ "be created)");
++MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will be created)");
+MODULE_PARM_DESC(numqueues, "number of queues per IMQ device");
+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See "
-+ "http://www.linuximq.net/ for more information.");
++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("imq");
+
-diff -uNr linux-3.1/drivers/net/Kconfig linux-3.1-imq/drivers/net/Kconfig
---- linux-3.1/drivers/net/Kconfig 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/drivers/net/Kconfig 2011-11-04 11:12:52.106390309 +0200
-@@ -124,6 +124,125 @@
- To compile this driver as a module, choose M here: the module
- will be called eql. If unsure, say N.
-
-+config IMQ
-+ tristate "IMQ (intermediate queueing device) support"
-+ depends on NETDEVICES && NETFILTER
-+ ---help---
-+ The IMQ device(s) is used as placeholder for QoS queueing
-+ disciplines. Every packet entering/leaving the IP stack can be
-+ directed through the IMQ device where it's enqueued/dequeued to the
-+ attached qdisc. This allows you to treat network devices as classes
-+ and distribute bandwidth among them. Iptables is used to specify
-+ through which IMQ device, if any, packets travel.
-+
-+ More information at: http://www.linuximq.net/
-+
-+ To compile this driver as a module, choose M here: the module
-+ will be called imq. If unsure, say N.
-+
-+choice
-+ prompt "IMQ behavior (PRE/POSTROUTING)"
-+ depends on IMQ
-+ default IMQ_BEHAVIOR_AB
-+ help
-+ This setting defines how IMQ behaves in respect to its
-+ hooking in PREROUTING and POSTROUTING.
-+
-+ IMQ can work in any of the following ways:
-+
-+ PREROUTING | POSTROUTING
-+ -----------------|-------------------
-+ #1 After NAT | After NAT
-+ #2 After NAT | Before NAT
-+ #3 Before NAT | After NAT
-+ #4 Before NAT | Before NAT
-+
-+ The default behavior is to hook before NAT on PREROUTING
-+ and after NAT on POSTROUTING (#3).
-+
-+ This settings are specially usefull when trying to use IMQ
-+ to shape NATed clients.
-+
-+ More information can be found at: www.linuximq.net
-+
-+ If not sure leave the default settings alone.
-+
-+config IMQ_BEHAVIOR_AA
-+ bool "IMQ AA"
-+ help
-+ This setting defines how IMQ behaves in respect to its
-+ hooking in PREROUTING and POSTROUTING.
-+
-+ Choosing this option will make IMQ hook like this:
-+
-+ PREROUTING: After NAT
-+ POSTROUTING: After NAT
-+
-+ More information can be found at: www.linuximq.net
-+
-+ If not sure leave the default settings alone.
-+
-+config IMQ_BEHAVIOR_AB
-+ bool "IMQ AB"
-+ help
-+ This setting defines how IMQ behaves in respect to its
-+ hooking in PREROUTING and POSTROUTING.
-+
-+ Choosing this option will make IMQ hook like this:
-+
-+ PREROUTING: After NAT
-+ POSTROUTING: Before NAT
-+
-+ More information can be found at: www.linuximq.net
-+
-+ If not sure leave the default settings alone.
-+
-+config IMQ_BEHAVIOR_BA
-+ bool "IMQ BA"
-+ help
-+ This setting defines how IMQ behaves in respect to its
-+ hooking in PREROUTING and POSTROUTING.
-+
-+ Choosing this option will make IMQ hook like this:
-+
-+ PREROUTING: Before NAT
-+ POSTROUTING: After NAT
-+
-+ More information can be found at: www.linuximq.net
-+
-+ If not sure leave the default settings alone.
-+
-+config IMQ_BEHAVIOR_BB
-+ bool "IMQ BB"
-+ help
-+ This setting defines how IMQ behaves in respect to its
-+ hooking in PREROUTING and POSTROUTING.
-+
-+ Choosing this option will make IMQ hook like this:
-+
-+ PREROUTING: Before NAT
-+ POSTROUTING: Before NAT
-+
-+ More information can be found at: www.linuximq.net
-+
-+ If not sure leave the default settings alone.
-+
-+endchoice
-+
-+config IMQ_NUM_DEVS
-+ int "Number of IMQ devices"
-+ range 2 16
-+ depends on IMQ
-+ default "16"
-+ help
-+ This setting defines how many IMQ devices will be created.
-+
-+ The default value is 16.
-+
-+ More information can be found at: www.linuximq.net
-+
-+ If not sure leave the default settings alone.
-+
- config TUN
- tristate "Universal TUN/TAP device driver support"
- select CRC32
-diff -uNr linux-3.1/drivers/net/Makefile linux-3.1-imq/drivers/net/Makefile
---- linux-3.1/drivers/net/Makefile 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/drivers/net/Makefile 2011-11-04 11:12:52.106390309 +0200
-@@ -7,6 +7,7 @@
- #
- obj-$(CONFIG_BONDING) += bonding/
- obj-$(CONFIG_DUMMY) += dummy.o
-+obj-$(CONFIG_IMQ) += imq.o
- obj-$(CONFIG_EQUALIZER) += eql.o
- obj-$(CONFIG_IFB) += ifb.o
- obj-$(CONFIG_MACVLAN) += macvlan.o
-diff -uNr linux-3.1/include/linux/imq.h linux-3.1-imq/include/linux/imq.h
---- linux-3.1/include/linux/imq.h 1970-01-01 02:00:00.000000000 +0200
-+++ linux-3.1-imq/include/linux/imq.h 2011-11-04 11:12:52.109723710 +0200
+diff --git a/include/linux/imq.h b/include/linux/imq.h
+new file mode 100644
+index 0000000..1babb09
+--- /dev/null
++++ b/include/linux/imq.h
@@ -0,0 +1,13 @@
+#ifndef _IMQ_H
+#define _IMQ_H
+
+#endif /* _IMQ_H */
+
-diff -uNr linux-3.1/include/linux/netfilter/xt_IMQ.h linux-3.1-imq/include/linux/netfilter/xt_IMQ.h
---- linux-3.1/include/linux/netfilter/xt_IMQ.h 1970-01-01 02:00:00.000000000 +0200
-+++ linux-3.1-imq/include/linux/netfilter/xt_IMQ.h 2011-11-04 11:12:52.109723710 +0200
+diff --git a/include/linux/netfilter/xt_IMQ.h b/include/linux/netfilter/xt_IMQ.h
+new file mode 100644
+index 0000000..9b07230
+--- /dev/null
++++ b/include/linux/netfilter/xt_IMQ.h
@@ -0,0 +1,9 @@
+#ifndef _XT_IMQ_H
+#define _XT_IMQ_H
+
+#endif /* _XT_IMQ_H */
+
-diff -uNr linux-3.1/include/uapi/linux/netfilter.h linux-3.1-imq/include/uapi/linux/netfilter.h
---- linux-3.1/include/uapi/linux/netfilter.h 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/include/uapi/linux/netfilter.h 2011-11-04 11:12:52.109723710 +0200
-@@ -22,7 +22,8 @@
- #define NF_QUEUE 3
- #define NF_REPEAT 4
- #define NF_STOP 5
--#define NF_MAX_VERDICT NF_STOP
-+#define NF_IMQ_QUEUE 6
-+#define NF_MAX_VERDICT NF_IMQ_QUEUE
-
- /* we overload the higher bits for encoding auxiliary data such as the queue
- * number or errno values. Not nice, but better than additional function
-diff -uNr linux-3.1/include/linux/netfilter_ipv4/ipt_IMQ.h linux-3.1-imq/include/linux/netfilter_ipv4/ipt_IMQ.h
---- linux-3.1/include/linux/netfilter_ipv4/ipt_IMQ.h 1970-01-01 02:00:00.000000000 +0200
-+++ linux-3.1-imq/include/linux/netfilter_ipv4/ipt_IMQ.h 2011-11-04 11:12:52.109723710 +0200
+diff --git a/include/linux/netfilter_ipv4/ipt_IMQ.h b/include/linux/netfilter_ipv4/ipt_IMQ.h
+new file mode 100644
+index 0000000..7af320f
+--- /dev/null
++++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
@@ -0,0 +1,10 @@
+#ifndef _IPT_IMQ_H
+#define _IPT_IMQ_H
+
+#endif /* _IPT_IMQ_H */
+
-diff -uNr linux-3.1/include/linux/netfilter_ipv6/ip6t_IMQ.h linux-3.1-imq/include/linux/netfilter_ipv6/ip6t_IMQ.h
---- linux-3.1/include/linux/netfilter_ipv6/ip6t_IMQ.h 1970-01-01 02:00:00.000000000 +0200
-+++ linux-3.1-imq/include/linux/netfilter_ipv6/ip6t_IMQ.h 2011-11-04 11:12:52.113057113 +0200
+diff --git a/include/linux/netfilter_ipv6/ip6t_IMQ.h b/include/linux/netfilter_ipv6/ip6t_IMQ.h
+new file mode 100644
+index 0000000..198ac01
+--- /dev/null
++++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
@@ -0,0 +1,10 @@
+#ifndef _IP6T_IMQ_H
+#define _IP6T_IMQ_H
+
+#endif /* _IP6T_IMQ_H */
+
-diff -uNr linux-3.1/include/linux/skbuff.h linux-3.1-imq/include/linux/skbuff.h
---- linux-3.1/include/linux/skbuff.h 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/include/linux/skbuff.h 2011-11-04 11:12:52.116390515 +0200
-@@ -29,6 +29,9 @@
- #include <linux/hrtimer.h>
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index f66f346..d699b19 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -33,6 +33,9 @@
#include <linux/dma-mapping.h>
#include <linux/netdev_features.h>
+ #include <net/flow_keys.h>
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+#include <linux/imq.h>
+#endif
/* Don't change this without changing skb_csum_unnecessary! */
#define CHECKSUM_NONE 0
-@@ -356,6 +359,9 @@
+@@ -418,6 +421,9 @@ struct sk_buff {
* first. This is owned by whoever has the skb queued ATM.
*/
char cb[48] __aligned(8);
unsigned long _skb_refdst;
#ifdef CONFIG_XFRM
-@@ -394,6 +400,9 @@
- #ifdef NET_SKBUFF_NF_DEFRAG_NEEDED
- struct sk_buff *nfct_reasm;
+@@ -453,6 +459,9 @@ struct sk_buff {
+ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ struct nf_conntrack *nfct;
#endif
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ struct nf_queue_entry *nf_queue_entry;
#ifdef CONFIG_BRIDGE_NETFILTER
struct nf_bridge_info *nf_bridge;
#endif
-@@ -418,6 +427,10 @@
-
- /* 0/13 bit hole */
-
+@@ -490,6 +499,9 @@ struct sk_buff {
+ */
+ __u8 encapsulation:1;
+ /* 6/8 bit hole (depending on ndisc_nodetype presence) */
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ __u8 imq_flags:IMQ_F_BITS;
+#endif
-+
- #ifdef CONFIG_NET_DMA
- dma_cookie_t dma_cookie;
- #endif
-@@ -504,6 +517,12 @@
+ kmemcheck_bitfield_end(flags2);
+
+ #if defined CONFIG_NET_DMA || defined CONFIG_NET_RX_BUSY_POLL
+@@ -625,6 +637,12 @@ static inline struct rtable *skb_rtable(const struct sk_buff *skb)
return (struct rtable *)skb_dst(skb);
}
+extern int skb_restore_cb(struct sk_buff *skb);
+#endif
+
- extern void kfree_skb(struct sk_buff *skb);
- extern void consume_skb(struct sk_buff *skb);
- extern void __kfree_skb(struct sk_buff *skb);
-@@ -2157,6 +2176,10 @@
- dst->nfct_reasm = src->nfct_reasm;
- nf_conntrack_get_reasm(src->nfct_reasm);
+ void kfree_skb(struct sk_buff *skb);
+ void kfree_skb_list(struct sk_buff *segs);
+ void skb_tx_error(struct sk_buff *skb);
+@@ -2635,6 +2653,10 @@ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src)
+ nf_conntrack_get(src->nfct);
+ dst->nfctinfo = src->nfctinfo;
#endif
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ dst->imq_flags = src->imq_flags;
#ifdef CONFIG_BRIDGE_NETFILTER
dst->nf_bridge = src->nf_bridge;
nf_bridge_get(src->nf_bridge);
-diff -uNr linux-3.1/include/net/netfilter/nf_queue.h linux-3.1-imq/include/net/netfilter/nf_queue.h
---- linux-3.1/include/net/netfilter/nf_queue.h 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/include/net/netfilter/nf_queue.h 2011-11-04 11:12:52.116390515 +0200
-@@ -30,5 +30,11 @@
- const struct nf_queue_handler *qh);
- extern void nf_unregister_queue_handlers(const struct nf_queue_handler *qh);
- extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);
+diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
+index aaba4bb..f6e92a4 100644
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -29,6 +29,12 @@ struct nf_queue_handler {
+ void nf_register_queue_handler(const struct nf_queue_handler *qh);
+ void nf_unregister_queue_handler(void);
+ void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);
+extern void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
+
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+extern void nf_unregister_queue_imq_handler(void);
+#endif
- #endif /* _NF_QUEUE_H */
-diff -uNr linux-3.1/net/core/dev.c linux-3.1-imq/net/core/dev.c
---- linux-3.1/net/core/dev.c 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/core/dev.c 2011-11-04 11:12:52.119723915 +0200
-@@ -98,6 +98,9 @@
- #include <net/net_namespace.h>
- #include <net/sock.h>
- #include <linux/rtnetlink.h>
+ bool nf_queue_entry_get_refs(struct nf_queue_entry *entry);
+ void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
+diff --git a/include/uapi/linux/netfilter.h b/include/uapi/linux/netfilter.h
+index f7dc0eb..58c46a9 100644
+--- a/include/uapi/linux/netfilter.h
++++ b/include/uapi/linux/netfilter.h
+@@ -13,7 +13,8 @@
+ #define NF_QUEUE 3
+ #define NF_REPEAT 4
+ #define NF_STOP 5
+-#define NF_MAX_VERDICT NF_STOP
++#define NF_IMQ_QUEUE 6
++#define NF_MAX_VERDICT NF_IMQ_QUEUE
+
+ /* we overload the higher bits for encoding auxiliary data such as the queue
+ * number or errno values. Not nice, but better than additional function
+diff --git a/net/core/dev.c b/net/core/dev.c
+index 3d13874..9842f21 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -131,6 +131,9 @@
+ #include <linux/hashtable.h>
+ #include <linux/vmalloc.h>
+ #include <linux/if_macvlan.h>
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+#include <linux/imq.h>
+#endif
- #include <linux/proc_fs.h>
- #include <linux/seq_file.h>
- #include <linux/stat.h>
-@@ -2126,7 +2129,12 @@
- if (dev->priv_flags & IFF_XMIT_DST_RELEASE)
- skb_dst_drop(skb);
+
+ #include "net-sysfs.h"
+
+@@ -2595,7 +2598,12 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
+ }
+ }
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ if (!list_empty(&ptype_all) &&
+#endif
dev_queue_xmit_nit(skb, dev);
- skb_orphan_try(skb);
-diff -uNr linux-3.1/net/core/skbuff.c linux-3.1-imq/net/core/skbuff.c
---- linux-3.1/net/core/skbuff.c 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/core/skbuff.c 2011-11-04 11:12:52.123057315 +0200
-@@ -73,6 +73,9 @@
+ skb_len = skb->len;
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index c28c7fe..a5f1888 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -73,6 +73,84 @@
- static struct kmem_cache *skbuff_head_cache __read_mostly;
+ struct kmem_cache *skbuff_head_cache __read_mostly;
static struct kmem_cache *skbuff_fclone_cache __read_mostly;
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+static struct kmem_cache *skbuff_cb_store_cache __read_mostly;
-+#endif
-
- static void sock_pipe_buf_release(struct pipe_inode_info *pipe,
- struct pipe_buffer *buf)
-@@ -92,6 +95,82 @@
- return 1;
- }
-
-+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++
+/* Control buffer save/restore for IMQ devices */
+struct skb_cb_table {
+ char cb[48] __aligned(8);
+}
+#endif
- /* Pipe buffer operations for a socket. */
- static const struct pipe_buf_operations sock_pipe_buf_ops = {
-@@ -392,6 +471,26 @@
+ /**
+ * skb_panic - private function for out-of-line support
+@@ -577,6 +656,28 @@ static void skb_release_head_state(struct sk_buff *skb)
WARN_ON(in_irq());
skb->destructor(skb);
}
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+ /* This should not happen. When it does, avoid memleak by restoring
-+ the chain of cb-backups. */
++ /*
++ * This should not happen. When it does, avoid memleak by restoring
++ * the chain of cb-backups.
++ */
+ while (skb->cb_next != NULL) {
+ if (net_ratelimit())
-+ printk(KERN_WARNING "IMQ: kfree_skb: skb->cb_next: "
-+ "%08x\n", (unsigned int)skb->cb_next);
++ pr_warn("IMQ: kfree_skb: skb->cb_next: %08x\n",
++ (unsigned int)skb->cb_next);
+
+ skb_restore_cb(skb);
+ }
-+ /* This should not happen either, nf_queue_entry is nullified in
++ /*
++ * This should not happen either, nf_queue_entry is nullified in
+ * imq_dev_xmit(). If we have non-NULL nf_queue_entry then we are
+ * leaking entry pointers, maybe memory. We don't know if this is
+ * pointer to already freed memory, or should this be freed.
+ * If this happens we need to add refcounting, etc for nf_queue_entry.
+ */
+ if (skb->nf_queue_entry && net_ratelimit())
-+ printk(KERN_WARNING
-+ "IMQ: kfree_skb: skb->nf_queue_entry != NULL");
++ pr_warn("%s\n", "IMQ: kfree_skb: skb->nf_queue_entry != NULL");
+#endif
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
nf_conntrack_put(skb->nfct);
#endif
-@@ -533,6 +632,9 @@
+@@ -709,6 +810,10 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
new->sp = secpath_get(old->sp);
#endif
memcpy(new->cb, old->cb, sizeof(old->cb));
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+ skb_copy_stored_cb(new, old);
++ new->cb_next = NULL;
++ /*skb_copy_stored_cb(new, old);*/
+#endif
new->csum = old->csum;
new->local_df = old->local_df;
new->pkt_type = old->pkt_type;
-@@ -2888,6 +2990,13 @@
+@@ -3112,6 +3217,13 @@ void __init skb_init(void)
0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC,
NULL);
}
/**
-diff -uNr linux-3.1/net/ipv6/ip6_output.c linux-3.1-imq/net/ipv6/ip6_output.c
---- linux-3.1/net/ipv6/ip6_output.c 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/ipv6/ip6_output.c 2011-11-04 11:12:52.123057315 +0200
-@@ -102,9 +102,6 @@
- struct net_device *dev = dst->dev;
- struct neighbour *neigh;
+diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
+index b6fa35e..08dcfef 100644
+--- a/net/ipv6/ip6_output.c
++++ b/net/ipv6/ip6_output.c
+@@ -64,9 +64,6 @@ static int ip6_finish_output2(struct sk_buff *skb)
+ struct in6_addr *nexthop;
+ int ret;
- skb->protocol = htons(ETH_P_IPV6);
- skb->dev = dev;
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr)) {
struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
-@@ -170,6 +167,11 @@
+@@ -143,6 +140,13 @@ int ip6_output(struct sk_buff *skb)
return 0;
}
-+ /* IMQ-patch: moved setting skb->dev and skb->protocol from
-+ * ip6_finish_output2 to fix crashing at netif_skb_features(). */
++ /*
++ * IMQ-patch: moved setting skb->dev and skb->protocol from
++ * ip6_finish_output2 to fix crashing at netif_skb_features().
++ */
+ skb->protocol = htons(ETH_P_IPV6);
+ skb->dev = dev;
+
return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING, skb, NULL, dev,
ip6_finish_output,
!(IP6CB(skb)->flags & IP6SKB_REROUTED));
-diff -uNr linux-3.1/net/netfilter/core.c linux-3.1-imq/net/netfilter/core.c
---- linux-3.1/net/netfilter/core.c 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/netfilter/core.c 2011-11-04 11:12:52.123057315 +0200
-@@ -179,9 +179,11 @@
- ret = NF_DROP_GETERR(verdict);
- if (ret == 0)
- ret = -EPERM;
-- } else if ((verdict & NF_VERDICT_MASK) == NF_QUEUE) {
-+ } else if ((verdict & NF_VERDICT_MASK) == NF_QUEUE ||
-+ (verdict & NF_VERDICT_MASK) == NF_IMQ_QUEUE) {
- int err = nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
-- verdict >> NF_VERDICT_QBITS);
-+ verdict >> NF_VERDICT_QBITS,
-+ verdict & NF_VERDICT_MASK);
- if (err < 0) {
- if (err == -ECANCELED)
- goto next_hook;
-diff -uNr linux-3.1/net/netfilter/Kconfig linux-3.1-imq/net/netfilter/Kconfig
---- linux-3.1/net/netfilter/Kconfig 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/netfilter/Kconfig 2011-11-04 11:12:52.123057315 +0200
-@@ -507,6 +507,18 @@
- For more information on the LEDs available on your system, see
- Documentation/leds-class.txt
+diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
+index 6e839b6..45ac31c 100644
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -630,6 +630,18 @@ config NETFILTER_XT_TARGET_LOG
+
+ To compile it as a module, choose M here. If unsure, say N.
+config NETFILTER_XT_TARGET_IMQ
+ tristate '"IMQ" target support'
config NETFILTER_XT_TARGET_MARK
tristate '"MARK" target support'
depends on NETFILTER_ADVANCED
-diff -uNr linux-3.1/net/netfilter/Makefile linux-3.1-imq/net/netfilter/Makefile
---- linux-3.1/net/netfilter/Makefile 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/netfilter/Makefile 2011-11-04 11:12:52.123057315 +0200
-@@ -61,6 +61,7 @@
- obj-$(CONFIG_NETFILTER_XT_TARGET_CT) += xt_CT.o
+diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
+index c3a0a12..9647f06 100644
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -82,6 +82,7 @@ obj-$(CONFIG_NETFILTER_XT_TARGET_CT) += xt_CT.o
obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
obj-$(CONFIG_NETFILTER_XT_TARGET_HL) += xt_HL.o
-+obj-$(CONFIG_NETFILTER_XT_TARGET_IMQ) += xt_IMQ.o
obj-$(CONFIG_NETFILTER_XT_TARGET_HMARK) += xt_HMARK.o
++obj-$(CONFIG_NETFILTER_XT_TARGET_IMQ) += xt_IMQ.o
obj-$(CONFIG_NETFILTER_XT_TARGET_LED) += xt_LED.o
obj-$(CONFIG_NETFILTER_XT_TARGET_LOG) += xt_LOG.o
-diff -uNr linux-3.1/net/netfilter/nf_internals.h linux-3.1-imq/net/netfilter/nf_internals.h
---- linux-3.1/net/netfilter/nf_internals.h 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/netfilter/nf_internals.h 2011-11-04 11:12:52.123057315 +0200
-@@ -29,7 +29,7 @@
- struct net_device *indev,
- struct net_device *outdev,
- int (*okfn)(struct sk_buff *),
-- unsigned int queuenum);
-+ unsigned int queuenum, unsigned int queuetype);
- extern int __init netfilter_queue_init(void);
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NETMAP) += xt_NETMAP.o
+diff --git a/net/netfilter/core.c b/net/netfilter/core.c
+index 593b16e..740cd69 100644
+--- a/net/netfilter/core.c
++++ b/net/netfilter/core.c
+@@ -191,9 +191,11 @@ next_hook:
+ ret = NF_DROP_GETERR(verdict);
+ if (ret == 0)
+ ret = -EPERM;
+- } else if ((verdict & NF_VERDICT_MASK) == NF_QUEUE) {
++ } else if ((verdict & NF_VERDICT_MASK) == NF_QUEUE ||
++ (verdict & NF_VERDICT_MASK) == NF_IMQ_QUEUE) {
+ int err = nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
+- verdict >> NF_VERDICT_QBITS);
++ verdict >> NF_VERDICT_QBITS,
++ verdict & NF_VERDICT_MASK);
+ if (err < 0) {
+ if (err == -ECANCELED)
+ goto next_hook;
+diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
+index 3deec99..c1a1397 100644
+--- a/net/netfilter/nf_internals.h
++++ b/net/netfilter/nf_internals.h
+@@ -29,7 +29,7 @@ extern int nf_queue(struct sk_buff *skb,
+ int nf_queue(struct sk_buff *skb, struct nf_hook_ops *elem, u_int8_t pf,
+ unsigned int hook, struct net_device *indev,
+ struct net_device *outdev, int (*okfn)(struct sk_buff *),
+- unsigned int queuenum);
++ unsigned int queuenum, unsigned int queuetype);
+ int __init netfilter_queue_init(void);
/* nf_log.c */
-diff -uNr linux-3.1/net/netfilter/nf_queue.c linux-3.1-imq/net/netfilter/nf_queue.c
---- linux-3.1/net/netfilter/nf_queue.c 2011-10-24 10:10:05.000000000 +0300
-+++ linux-3.1-imq/net/netfilter/nf_queue.c 2011-11-04 11:12:52.123057315 +0200
-@@ -22,6 +22,26 @@
-
- static DEFINE_MUTEX(queue_handler_mutex);
+diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
+index 5d24b1f..28317dc 100644
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -27,6 +27,23 @@
+ */
+ static const struct nf_queue_handler __rcu *queue_handler __read_mostly;
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+static const struct nf_queue_handler *queue_imq_handler;
++static const struct nf_queue_handler __rcu *queue_imq_handler __read_mostly;
+
+void nf_register_queue_imq_handler(const struct nf_queue_handler *qh)
+{
-+ mutex_lock(&queue_handler_mutex);
+ rcu_assign_pointer(queue_imq_handler, qh);
-+ mutex_unlock(&queue_handler_mutex);
+}
+EXPORT_SYMBOL_GPL(nf_register_queue_imq_handler);
+
+void nf_unregister_queue_imq_handler(void)
+{
-+ mutex_lock(&queue_handler_mutex);
-+ rcu_assign_pointer(queue_imq_handler, NULL);
-+ mutex_unlock(&queue_handler_mutex);
++ RCU_INIT_POINTER(queue_imq_handler, NULL);
++ synchronize_rcu();
+}
+EXPORT_SYMBOL_GPL(nf_unregister_queue_imq_handler);
+#endif
+
/* return EBUSY when somebody else is registered, return EEXIST if the
* same handler is registered, return 0 in case of success. */
- int nf_register_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh)
-@@ -92,7 +112,7 @@
- }
- EXPORT_SYMBOL_GPL(nf_unregister_queue_handlers);
-
--static void nf_queue_entry_release_refs(struct nf_queue_entry *entry)
-+void nf_queue_entry_release_refs(struct nf_queue_entry *entry)
- {
- /* Release those devices we held, or Alexey will kill me. */
- if (entry->indev)
-@@ -112,6 +132,7 @@
- /* Drop reference to owner of hook which queued us. */
- module_put(entry->elem->owner);
- }
-+EXPORT_SYMBOL_GPL(nf_queue_entry_release_refs);
-
- /*
- * Any packet that leaves via this function must come back
-@@ -123,7 +144,8 @@
+ void nf_register_queue_handler(const struct nf_queue_handler *qh)
+@@ -105,7 +122,8 @@ int nf_queue(struct sk_buff *skb,
struct net_device *indev,
struct net_device *outdev,
int (*okfn)(struct sk_buff *),
{
int status = -ENOENT;
struct nf_queue_entry *entry = NULL;
-@@ -137,7 +159,17 @@
+@@ -115,7 +133,17 @@ int nf_queue(struct sk_buff *skb,
/* QUEUE == DROP if no one is waiting, to be safe. */
rcu_read_lock();
-- qh = rcu_dereference(queue_handler[pf]);
+- qh = rcu_dereference(queue_handler);
+ if (queuetype == NF_IMQ_QUEUE) {
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ qh = rcu_dereference(queue_imq_handler);
+ goto err_unlock;
+#endif
+ } else {
-+ qh = rcu_dereference(queue_handler[pf]);
++ qh = rcu_dereference(queue_handler);
+ }
+
if (!qh) {
status = -ESRCH;
goto err_unlock;
-@@ -209,7 +241,8 @@
- struct net_device *indev,
- struct net_device *outdev,
- int (*okfn)(struct sk_buff *),
-- unsigned int queuenum)
-+ unsigned int queuenum,
-+ unsigned int queuetype)
- {
- struct sk_buff *segs;
- int err;
-@@ -217,7 +250,7 @@
-
- if (!skb_is_gso(skb))
- return __nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
-- queuenum);
-+ queuenum, queuetype);
-
- switch (pf) {
- case NFPROTO_IPV4:
-@@ -299,7 +299,7 @@ int nf_queue(struct sk_buff *skb,
- if (err == 0) {
- nf_bridge_adjust_segmented_data(segs);
- err = __nf_queue(segs, elem, pf, hook, indev,
-- outdev, okfn, queuenum);
-+ outdev, okfn, queuenum, queuetype);
- }
- if (err == 0)
- queued++;
-@@ -299,9 +332,11 @@
+@@ -205,9 +233,11 @@ void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
local_bh_enable();
break;
case NF_QUEUE:
+ case NF_IMQ_QUEUE:
- err = __nf_queue(skb, elem, entry->pf, entry->hook,
- entry->indev, entry->outdev, entry->okfn,
-- verdict >> NF_VERDICT_QBITS);
-+ verdict >> NF_VERDICT_QBITS,
-+ verdict & NF_VERDICT_MASK);
+ err = nf_queue(skb, elem, entry->pf, entry->hook,
+ entry->indev, entry->outdev, entry->okfn,
+- verdict >> NF_VERDICT_QBITS);
++ verdict >> NF_VERDICT_QBITS,
++ verdict & NF_VERDICT_MASK);
if (err < 0) {
if (err == -ECANCELED)
goto next_hook;
-diff -uNr linux-3.1/net/netfilter/xt_IMQ.c linux-3.1-imq/net/netfilter/xt_IMQ.c
---- linux-3.1/net/netfilter/xt_IMQ.c 1970-01-01 02:00:00.000000000 +0200
-+++ linux-3.1-imq/net/netfilter/xt_IMQ.c 2011-11-04 11:12:52.123057315 +0200
-@@ -0,0 +1,74 @@
+diff --git a/net/netfilter/xt_IMQ.c b/net/netfilter/xt_IMQ.c
+new file mode 100644
+index 0000000..1c3cd66
+--- /dev/null
++++ b/net/netfilter/xt_IMQ.c
+@@ -0,0 +1,72 @@
+/*
+ * This target marks packets to be enqueued to an imq device
+ */
+ struct xt_imq_info *mr = par->targinfo;
+
+ if (mr->todev > IMQ_MAX_DEVS - 1) {
-+ printk(KERN_WARNING
-+ "IMQ: invalid device specified, highest is %u\n",
-+ IMQ_MAX_DEVS - 1);
++ pr_warn("IMQ: invalid device specified, highest is %u\n",
++ IMQ_MAX_DEVS - 1);
+ return -EINVAL;
+ }
+
+module_exit(imq_fini);
+
+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. "
-+ "See http://www.linuximq.net/ for more information.");
++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_IMQ");
+MODULE_ALIAS("ip6t_IMQ");
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