[kernel] update imq patches for 2.6.26, 2.6.27, 2.6.28, 2.6.29 and 2.6.30

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15655 3c298f89-4303-0410-b956-a3cf2f4a3e73

22 files changed, 3022 insertions, 1727 deletions

diff --git a/target/linux/generic-2.6/patches-2.6.26/150-netfilter_imq.patch b/target/linux/generic-2.6/patches-2.6.26/150-netfilter_imq.patch
index d18e0cb5d6..29485c1efa 100644
--- a/target/linux/generic-2.6/patches-2.6.26/150-netfilter_imq.patch
+++ b/target/linux/generic-2.6/patches-2.6.26/150-netfilter_imq.patch
@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/drivers/net/imq.c
-@@ -0,0 +1,474 @@
+@@ -0,0 +1,565 @@
 +/*
 + *             Pseudo-driver for the intermediate queue device.
 + *
@@ -51,10 +51,30 @@
 + *
 + *
 + *             2008/06/17 - 2.6.25 - Changed imq.c to use qdisc_run() instead
-+ *	       of qdisc_restart() and moved qdisc_run() to tasklet to avoid
++ *             of qdisc_restart() and moved qdisc_run() to tasklet to avoid
 + *             recursive locking. New initialization routines to fix 'rmmod' not
 + *             working anymore. Used code from ifb.c. (Jussi Kivilinna)
 + *
++ *             2008/08/06 - 2.6.26 - (JK)
++ *              - Replaced tasklet with 'netif_schedule()'.
++ *              - Cleaned up and added comments for imq_nf_queue().
++ *
++ *             2009/05/02 - Backported 2.6.27 fixes to 2.6.26 (Jussi Kivilinna)
++ *              - Add skb_save_cb/skb_restore_cb helper functions for backuping
++ *                control buffer. This is needed because some networking layers
++ *                on kernels before 2.6.27 overwrite control buffer when they
++ *                should not. These errornous uses (wireless for example) of cb
++ *                were found when qdisc-layer started using cb in 2.6.27. As we
++ *                don't want to break up any code, even if it's buggy, use
++ *                same backup-cb trick as used with 2.6.27-patch.
++ *              - Add better locking for IMQ device by using spin_lock_bh
++ *                instead of spin_lock. There was problem where NIC-interrupt
++ *                would happen while IMQ-spin_lock was held which could lead to
++ *                deadlock. Hopefully this will solve the SMP issues.
++ *              - Fix rmmod not working.
++ *              - Use netdevice feature flags to avoid extra packet handling
++ *                by core networking layer and possibly increase performance.
++ *
 + *	       Also, many thanks to pablo Sebastian Greco for making the initial
 + *	       patch and to those who helped the testing.
 + *
@@ -64,8 +84,10 @@
 +#include <linux/module.h>
 +#include <linux/kernel.h>
 +#include <linux/moduleparam.h>
++#include <linux/list.h>
 +#include <linux/skbuff.h>
 +#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
 +#include <linux/rtnetlink.h>
 +#include <linux/if_arp.h>
 +#include <linux/netfilter.h>
@@ -77,11 +99,6 @@
 +#include <net/pkt_sched.h>
 +#include <net/netfilter/nf_queue.h>
 +
-+struct imq_private {
-+	struct tasklet_struct tasklet;
-+	unsigned long tasklet_pending;
-+};
-+
 +static nf_hookfn imq_nf_hook;
 +
 +static struct nf_hook_ops imq_ingress_ipv4 = {
@@ -140,6 +157,8 @@
 +static unsigned int numdevs = IMQ_MAX_DEVS;
 +#endif
 +
++static DEFINE_SPINLOCK(imq_nf_queue_lock);
++
 +static struct net_device *imq_devs_cache[IMQ_MAX_DEVS];
 +
 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
@@ -153,12 +172,35 @@
 +	struct nf_queue_entry *entry = skb->nf_queue_entry;
 +
 +	if (entry) {
-+		if (entry->indev)
-+			dev_put(entry->indev);
-+		if (entry->outdev)
-+			dev_put(entry->outdev);
++		nf_queue_entry_release_refs(entry);
 +		kfree(entry);
 +	}
++
++	skb_restore_cb(skb); /* kfree backup */
++}
++
++static void imq_nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
++{
++	int status;
++
++	if (!entry->next_outfn) {
++		spin_lock_bh(&imq_nf_queue_lock);
++		nf_reinject(entry, verdict);
++		spin_unlock_bh(&imq_nf_queue_lock);
++		return;
++	}
++
++	rcu_read_lock();
++	local_bh_disable();
++	status = entry->next_outfn(entry, entry->next_queuenum);
++	local_bh_enable();
++	if (status < 0) {
++		nf_queue_entry_release_refs(entry);
++		kfree_skb(entry->skb);
++		kfree(entry);
++	}
++
++	rcu_read_unlock();
 +}
 +
 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -169,26 +211,35 @@
 +	skb->imq_flags = 0;
 +	skb->destructor = NULL;
 +
++	skb_restore_cb(skb); /* restore skb->cb */
++
 +	dev->trans_start = jiffies;
-+	nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
++	imq_nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
 +	return 0;
 +}
 +
 +static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num)
 +{
 +	struct net_device *dev;
-+	struct imq_private *priv;
-+	struct sk_buff *skb2 = NULL;
++	struct sk_buff *skb_orig, *skb, *skb_shared;
 +	struct Qdisc *q;
-+	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
-+	int ret = -1;
-+
-+	if (index > numdevs)
-+		return -1;
++	/*spinlock_t *root_lock;*/
++	int users, index;
++	int retval = -EINVAL;
++
++	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);
++		retval = -EINVAL;
++		goto out;
++	}
 +
 +	/* check for imq device by index from cache */
 +	dev = imq_devs_cache[index];
-+	if (!dev) {
++	if (unlikely(!dev)) {
 +		char buf[8];
 +
 +		/* get device by name and cache result */
@@ -197,49 +248,87 @@
 +		if (!dev) {
 +			/* not found ?!*/
 +			BUG();
-+			return -1;
++			retval = -ENODEV;
++			goto out;
 +		}
 +
 +		imq_devs_cache[index] = dev;
++		dev_put(dev);
 +	}
 +
-+	priv = netdev_priv(dev);
-+	if (!(dev->flags & IFF_UP)) {
++	if (unlikely(!(dev->flags & IFF_UP))) {
 +		entry->skb->imq_flags = 0;
-+		nf_reinject(entry, NF_ACCEPT);
-+		return 0;
++		imq_nf_reinject(entry, NF_ACCEPT);
++		retval = 0;
++		goto out;
 +	}
 +	dev->last_rx = jiffies;
 +
-+	if (entry->skb->destructor) {
-+		skb2 = entry->skb;
-+		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
-+		if (!entry->skb)
-+			return -1;
++	skb = entry->skb;
++	skb_orig = NULL;
++
++	/* skb has owner? => make clone */
++	if (unlikely(skb->destructor)) {
++		skb_orig = skb;
++		skb = skb_clone(skb, GFP_ATOMIC);
++		if (!skb) {
++			retval = -ENOMEM;
++			goto out;
++		}
++		entry->skb = skb;
 +	}
-+	entry->skb->nf_queue_entry = entry;
 +
-+	dev->stats.rx_bytes += entry->skb->len;
++	skb->nf_queue_entry = entry;
++
++	dev->stats.rx_bytes += skb->len;
 +	dev->stats.rx_packets++;
 +
++	q = rcu_dereference(dev->qdisc);
++	if (unlikely(!q->enqueue))
++		goto packet_not_eaten_by_imq_dev;
++
 +	spin_lock_bh(&dev->queue_lock);
-+	q = dev->qdisc;
-+	if (q->enqueue) {
-+		q->enqueue(skb_get(entry->skb), q);
-+		if (skb_shared(entry->skb)) {
-+			entry->skb->destructor = imq_skb_destructor;
-+			kfree_skb(entry->skb);
-+			ret = 0;
-+		}
-+	}
-+	if (!test_and_set_bit(1, &priv->tasklet_pending))
-+		tasklet_schedule(&priv->tasklet);
-+	spin_unlock_bh(&dev->queue_lock);
 +
-+	if (skb2)
-+		kfree_skb(ret ? entry->skb : skb2);
++	users = atomic_read(&skb->users);
 +
-+	return ret;
++	skb_shared = skb_get(skb); /* increase reference count by one */
++	skb_save_cb(skb_shared); /* backup skb->cb, as qdisc layer will
++					overwrite it */
++	q->enqueue(skb_shared, q); /* might kfree_skb */
++
++	if (likely(atomic_read(&skb_shared->users) == users + 1)) {
++		kfree_skb(skb_shared); /* decrease reference count by one */
++
++		skb->destructor = &imq_skb_destructor;
++
++		/* cloned? */
++		if (skb_orig)
++			kfree_skb(skb_orig); /* free original */
++
++		/* schedule qdisc dequeue */
++		netif_schedule(dev);
++
++		spin_unlock_bh(&dev->queue_lock);
++		retval = 0;
++		goto out;
++	} else {
++		skb_restore_cb(skb_shared); /* restore skb->cb */
++		/* 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. */
++		spin_unlock_bh(&dev->queue_lock);
++		goto packet_not_eaten_by_imq_dev;
++	}
++
++packet_not_eaten_by_imq_dev:
++	/* cloned? restore original */
++	if (skb_orig) {
++		kfree_skb(skb);
++		entry->skb = skb_orig;
++	}
++	retval = -1;
++out:
++	return retval;
 +}
 +
 +static struct nf_queue_handler nfqh = {
@@ -247,17 +336,6 @@
 +	.outfn = imq_nf_queue,
 +};
 +
-+static void qdisc_run_tasklet(unsigned long arg)
-+{
-+	struct net_device *dev = (struct net_device *)arg;
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	spin_lock(&dev->queue_lock);
-+	qdisc_run(dev);
-+	clear_bit(1, &priv->tasklet_pending);
-+	spin_unlock(&dev->queue_lock);
-+}
-+
 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
 +				const struct net_device *indev,
 +				const struct net_device *outdev,
@@ -271,21 +349,13 @@
 +
 +static int imq_close(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_kill(&priv->tasklet);
 +	netif_stop_queue(dev);
-+
 +	return 0;
 +}
 +
 +static int imq_open(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_init(&priv->tasklet, qdisc_run_tasklet, (unsigned long)dev);
 +	netif_start_queue(dev);
-+
 +	return 0;
 +}
 +
@@ -299,59 +369,74 @@
 +	dev->mtu                = 16000;
 +	dev->tx_queue_len       = 11000;
 +	dev->flags              = IFF_NOARP;
++	dev->features           = NETIF_F_SG | NETIF_F_FRAGLIST |
++				  NETIF_F_GSO | NETIF_F_HW_CSUM |
++				  NETIF_F_HIGHDMA;
++}
++
++static int imq_validate(struct nlattr *tb[], struct nlattr *data[])
++{
++	int ret = 0;
++
++	if (tb[IFLA_ADDRESS]) {
++		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
++			ret = -EINVAL;
++			goto end;
++		}
++		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
++			ret = -EADDRNOTAVAIL;
++			goto end;
++		}
++	}
++	return 0;
++end:
++	printk(KERN_WARNING "IMQ: imq_validate failed (%d)\n", ret);
++	return ret;
 +}
 +
 +static struct rtnl_link_ops imq_link_ops __read_mostly = {
 +	.kind		= "imq",
-+	.priv_size	= sizeof(struct imq_private),
++	.priv_size	= 0,
 +	.setup		= imq_setup,
++	.validate	= imq_validate,
 +};
 +
 +static int __init imq_init_hooks(void)
 +{
 +	int err;
 +
-+	err = nf_register_queue_handler(PF_INET, &nfqh);
-+	if (err)
-+		goto err1;
++	nf_register_queue_imq_handler(&nfqh);
 +
 +	err = nf_register_hook(&imq_ingress_ipv4);
 +	if (err)
-+		goto err2;
++		goto err1;
 +
 +	err = nf_register_hook(&imq_egress_ipv4);
 +	if (err)
-+		goto err3;
++		goto err2;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+	err = nf_register_queue_handler(PF_INET6, &nfqh);
-+	if (err)
-+		goto err4;
-+
 +	err = nf_register_hook(&imq_ingress_ipv6);
 +	if (err)
-+		goto err5;
++		goto err3;
 +
 +	err = nf_register_hook(&imq_egress_ipv6);
 +	if (err)
-+		goto err6;
++		goto err4;
 +#endif
 +
 +	return 0;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+err6:
-+	nf_unregister_hook(&imq_ingress_ipv6);
-+err5:
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +err4:
++	nf_unregister_hook(&imq_ingress_ipv6);
++err3:
 +	nf_unregister_hook(&imq_egress_ipv4);
 +#endif
-+err3:
-+	nf_unregister_hook(&imq_ingress_ipv4);
 +err2:
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++	nf_unregister_hook(&imq_ingress_ipv4);
 +err1:
++	nf_unregister_queue_imq_handler();
 +	return err;
 +}
 +
@@ -360,7 +445,7 @@
 +	struct net_device *dev;
 +	int ret;
 +
-+	dev = alloc_netdev(sizeof(struct imq_private), "imq%d", imq_setup);
++	dev = alloc_netdev(0, "imq%d", imq_setup);
 +	if (!dev)
 +		return -ENOMEM;
 +
@@ -383,7 +468,7 @@
 +{
 +	int err, i;
 +
-+	if (!numdevs || numdevs > IMQ_MAX_DEVS) {
++	if (numdevs < 1 || numdevs > IMQ_MAX_DEVS) {
 +		printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
 +		       IMQ_MAX_DEVS);
 +		return -EINVAL;
@@ -408,6 +493,12 @@
 +{
 +	int err;
 +
++#if defined(CONFIG_IMQ_NUM_DEVS)
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS > 16);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS < 2);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS - 1 > IMQ_F_IFMASK);
++#endif
++
 +	err = imq_init_devs();
 +	if (err) {
 +		printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
@@ -443,11 +534,11 @@
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 +	nf_unregister_hook(&imq_ingress_ipv6);
 +	nf_unregister_hook(&imq_egress_ipv6);
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +#endif
 +	nf_unregister_hook(&imq_ingress_ipv4);
 +	nf_unregister_hook(&imq_egress_ipv4);
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++
++	nf_unregister_queue_imq_handler();
 +}
 +
 +static void __exit imq_cleanup_devs(void)
@@ -477,7 +568,7 @@
 +
 --- a/drivers/net/Kconfig
 +++ b/drivers/net/Kconfig
-@@ -117,6 +117,129 @@ config EQUALIZER
+@@ -117,6 +117,129 @@
  	  To compile this driver as a module, choose M here: the module
  	  will be called eql.  If unsure, say N.
  
@@ -609,7 +700,7 @@
  	select CRC32
 --- a/drivers/net/Makefile
 +++ b/drivers/net/Makefile
-@@ -142,6 +142,7 @@ obj-$(CONFIG_SLHC) += slhc.o
+@@ -142,6 +142,7 @@
  obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
  
  obj-$(CONFIG_DUMMY) += dummy.o
@@ -619,52 +710,102 @@
  obj-$(CONFIG_DE600) += de600.o
 --- /dev/null
 +++ b/include/linux/imq.h
-@@ -0,0 +1,9 @@
+@@ -0,0 +1,13 @@
 +#ifndef _IMQ_H
 +#define _IMQ_H
 +
-+#define IMQ_MAX_DEVS   16
++/* IFMASK (16 device indexes, 0 to 15) and flag(s) fit in 5 bits */
++#define IMQ_F_BITS	5
++
++#define IMQ_F_IFMASK	0x0f
++#define IMQ_F_ENQUEUE	0x10
 +
-+#define IMQ_F_IFMASK   0x7f
-+#define IMQ_F_ENQUEUE  0x80
++#define IMQ_MAX_DEVS	(IMQ_F_IFMASK + 1)
 +
 +#endif /* _IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IPT_IMQ_H
 +#define _IPT_IMQ_H
 +
-+struct ipt_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ipt_imq_info xt_imq_info
 +
 +#endif /* _IPT_IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IP6T_IMQ_H
 +#define _IP6T_IMQ_H
 +
-+struct ip6t_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ip6t_imq_info xt_imq_info
 +
 +#endif /* _IP6T_IMQ_H */
++
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -300,6 +300,10 @@ struct sk_buff {
+@@ -28,6 +28,9 @@
+ #include <linux/rcupdate.h>
+ #include <linux/dmaengine.h>
+ #include <linux/hrtimer.h>
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#include <linux/imq.h>
++#endif
+ 
+ #define HAVE_ALLOC_SKB		/* For the drivers to know */
+ #define HAVE_ALIGNABLE_SKB	/* Ditto 8)		   */
+@@ -270,6 +273,9 @@
+ 	 * first. This is owned by whoever has the skb queued ATM.
+ 	 */
+ 	char			cb[48];
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	void			*cb_next;
++#endif
+ 
+ 	unsigned int		len,
+ 				data_len;
+@@ -300,6 +306,9 @@
  	struct nf_conntrack	*nfct;
  	struct sk_buff		*nfct_reasm;
  #endif
 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+	unsigned char			imq_flags;
 +	struct nf_queue_entry	*nf_queue_entry;
 +#endif
  #ifdef CONFIG_BRIDGE_NETFILTER
  	struct nf_bridge_info	*nf_bridge;
  #endif
-@@ -1633,6 +1637,10 @@ static inline void __nf_copy(struct sk_b
+@@ -318,6 +327,9 @@
+ 	__u8			ndisc_nodetype:2;
+ #endif
+ 	/* 14 bit hole */
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	__u8			imq_flags:IMQ_F_BITS;
++#endif
+ 
+ #ifdef CONFIG_NET_DMA
+ 	dma_cookie_t		dma_cookie;
+@@ -348,6 +360,12 @@
+ 
+ #include <asm/system.h>
+ 
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern int skb_save_cb(struct sk_buff *skb);
++extern int skb_restore_cb(struct sk_buff *skb);
++#endif
++
+ extern void kfree_skb(struct sk_buff *skb);
+ extern void	       __kfree_skb(struct sk_buff *skb);
+ extern struct sk_buff *__alloc_skb(unsigned int size,
+@@ -1633,6 +1651,10 @@
  	dst->nfct_reasm = src->nfct_reasm;
  	nf_conntrack_get_reasm(src->nfct_reasm);
  #endif
@@ -687,7 +828,7 @@
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  #include <linux/stat.h>
-@@ -1569,7 +1572,11 @@ static int dev_gso_segment(struct sk_buf
+@@ -1569,7 +1572,11 @@
  int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
  {
  	if (likely(!skb->next)) {
@@ -701,117 +842,331 @@
  
  		if (netif_needs_gso(dev, skb)) {
 --- /dev/null
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -0,0 +1,69 @@
-+/*
-+ * This target marks packets to be enqueued to an imq device
-+ */
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_ipv4/ipt_IMQ.h>
-+#include <linux/imq.h>
++++ b/include/linux/netfilter/xt_IMQ.h
+@@ -0,0 +1,9 @@
++#ifndef _XT_IMQ_H
++#define _XT_IMQ_H
 +
-+static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++struct xt_imq_info {
++	unsigned int todev;     /* target imq device */
++};
++
++#endif /* _XT_IMQ_H */
++
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -13,6 +13,12 @@
+ 	struct net_device	*indev;
+ 	struct net_device	*outdev;
+ 	int			(*okfn)(struct sk_buff *);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	int			(*next_outfn)(struct nf_queue_entry *entry,
++					      unsigned int queuenum);
++	unsigned int		next_queuenum;
++#endif
+ };
+ 
+ #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
+@@ -30,5 +36,11 @@
+ 				       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);
++extern void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern void nf_register_queue_imq_handler(const struct nf_queue_handler *qh);
++extern void nf_unregister_queue_imq_handler(void);
++#endif
+ 
+ #endif /* _NF_QUEUE_H */
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -71,6 +71,9 @@
+ 
+ static 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)
+@@ -94,6 +97,81 @@
+ 	return 1;
+ }
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++/* Control buffer save/restore for IMQ devices */
++struct skb_cb_table {
++	void			*cb_next;
++	atomic_t		refcnt;
++	char      		cb[48];
++};
++
++static DEFINE_SPINLOCK(skb_cb_store_lock);
++
++int skb_save_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	next = kmem_cache_alloc(skbuff_cb_store_cache, GFP_ATOMIC);
++	if (!next)
++		return -ENOMEM;
 +
-+	return XT_CONTINUE;
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(next->cb, skb->cb, sizeof(skb->cb));
++	next->cb_next = skb->cb_next;
++
++	atomic_set(&next->refcnt, 1);
++
++got_next:
++	skb->cb_next = next;
++	return 0;
 +}
++EXPORT_SYMBOL(skb_save_cb);
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *e,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++int skb_restore_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr;
++	struct skb_cb_table *next;
 +
-+	mr = (struct ipt_imq_info *)targinfo;
-+
-+	if (mr->todev > IMQ_MAX_DEVS) {
-+		printk(KERN_WARNING
-+		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++	if (!skb->cb_next)
 +		return 0;
++
++	next = skb->cb_next;
++
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(skb->cb, next->cb, sizeof(skb->cb));
++	skb->cb_next = next->cb_next;
++
++	spin_lock(&skb_cb_store_lock);
++
++	if (atomic_dec_and_test(&next->refcnt)) {
++		kmem_cache_free(skbuff_cb_store_cache, next);
 +	}
 +
-+	return 1;
++	spin_unlock(&skb_cb_store_lock);
++
++	return 0;
 +}
++EXPORT_SYMBOL(skb_restore_cb);
 +
-+static struct xt_target ipt_imq_reg = {
-+	.name		= "IMQ",
-+	.family		= AF_INET,
-+	.target		= imq_target,
-+	.targetsize	= sizeof(struct ipt_imq_info),
-+	.checkentry	= imq_checkentry,
-+	.me		= THIS_MODULE,
-+	.table		= "mangle"
-+};
++static void skb_copy_stored_cb(struct sk_buff *new, struct sk_buff *old)
++{
++	struct skb_cb_table *next;
++
++	if (!old->cb_next) {
++		new->cb_next = 0;
++		return;
++	}
++
++	spin_lock(&skb_cb_store_lock);
++
++	next = old->cb_next;
++	atomic_inc(&next->refcnt);
++	new->cb_next = next;
++
++	spin_unlock(&skb_cb_store_lock);
++}
++#endif
+ 
+ /* Pipe buffer operations for a socket. */
+ static struct pipe_buf_operations sock_pipe_buf_ops = {
+@@ -376,6 +454,15 @@
+ 		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. */
++	while(skb->cb_next != NULL) {
++		printk(KERN_WARNING "kfree_skb: skb->cb_next: %08x\n",
++			skb->cb_next);
++		skb_restore_cb(skb);
++	}
++#endif
+ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ 	nf_conntrack_put(skb->nfct);
+ 	nf_conntrack_put_reasm(skb->nfct_reasm);
+@@ -438,6 +525,9 @@
+ 	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);
++#endif
+ 	new->csum_start		= old->csum_start;
+ 	new->csum_offset	= old->csum_offset;
+ 	new->local_df		= old->local_df;
+@@ -2290,6 +2380,7 @@
+ 		nskb->protocol = skb->protocol;
+ 		nskb->dst = dst_clone(skb->dst);
+ 		memcpy(nskb->cb, skb->cb, sizeof(skb->cb));
++		skb_copy_stored_cb(nskb, skb);
+ 		nskb->pkt_type = skb->pkt_type;
+ 		nskb->mac_len = skb->mac_len;
+ 
+@@ -2371,6 +2462,13 @@
+ 						0,
+ 						SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+ 						NULL);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	skbuff_cb_store_cache = kmem_cache_create("skbuff_cb_store_cache",
++						  sizeof(struct skb_cb_table),
++						  0,
++						  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
++						  NULL);
++#endif
+ }
+ 
+ /**
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -334,6 +334,18 @@
+ 
+ 	  To compile it as a module, choose M here.  If unsure, say N.
+ 
++config NETFILTER_XT_TARGET_IMQ
++        tristate '"IMQ" target support'
++	depends on NETFILTER_XTABLES
++	depends on IP_NF_MANGLE || IP6_NF_MANGLE
++	select IMQ
++	default m if NETFILTER_ADVANCED=n
++        help
++          This option adds a `IMQ' target which is used to specify if and
++          to which imq device packets should get enqueued/dequeued.
++
++          To compile it as a module, choose M here.  If unsure, say N.
 +
-+static int __init init(void)
+ config NETFILTER_XT_TARGET_MARK
+ 	tristate '"MARK" target support'
+ 	depends on NETFILTER_XTABLES
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -42,6 +42,7 @@
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
++obj-$(CONFIG_NETFILTER_XT_TARGET_IMQ) += xt_IMQ.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG) += xt_NFLOG.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -20,6 +20,26 @@
+ 
+ static DEFINE_MUTEX(queue_handler_mutex);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++static const struct nf_queue_handler *queue_imq_handler;
++
++void nf_register_queue_imq_handler(const struct nf_queue_handler *qh)
 +{
-+	return xt_register_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, qh);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_register_queue_imq_handler);
 +
-+static void __exit fini(void)
++void nf_unregister_queue_imq_handler(void)
 +{
-+	xt_unregister_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, NULL);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_unregister_queue_imq_handler);
++#endif
 +
-+module_init(init);
-+module_exit(fini);
+ /* 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(int pf, const struct nf_queue_handler *qh)
+@@ -80,7 +100,7 @@
+ }
+ 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)
+@@ -100,6 +120,7 @@
+ 	/* 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
+@@ -121,12 +142,26 @@
+ #endif
+ 	const struct nf_afinfo *afinfo;
+ 	const struct nf_queue_handler *qh;
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	const struct nf_queue_handler *qih = NULL;
++#endif
+ 
+ 	/* QUEUE == DROP if noone is waiting, to be safe. */
+ 	rcu_read_lock();
+ 
+ 	qh = rcu_dereference(queue_handler[pf]);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
++	if (pf == PF_INET || pf == PF_INET6)
++#else
++	if (pf == PF_INET)
++#endif
++		qih = rcu_dereference(queue_imq_handler);
 +
-+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
-+MODULE_LICENSE("GPL");
---- a/net/ipv4/netfilter/Kconfig
-+++ b/net/ipv4/netfilter/Kconfig
-@@ -123,6 +123,17 @@ config IP_NF_FILTER
++	if (!qh && !qih)
++#else /* !IMQ */
+ 	if (!qh)
++#endif
+ 		goto err_unlock;
  
- 	  To compile it as a module, choose M here.  If unsure, say N.
+ 	afinfo = nf_get_afinfo(pf);
+@@ -145,6 +180,10 @@
+ 		.indev	= indev,
+ 		.outdev	= outdev,
+ 		.okfn	= okfn,
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++		.next_outfn = qh ? qh->outfn : NULL,
++		.next_queuenum = queuenum,
++#endif
+ 	};
  
-+config IP_NF_TARGET_IMQ
-+       tristate "IMQ target support"
-+       depends on IP_NF_MANGLE && IMQ
-+       help
-+         This option adds a `IMQ' target which is used to specify if and
-+         to which IMQ device packets should get enqueued/dequeued.
-+
-+	 For more information visit: http://www.linuximq.net/
-+
-+         To compile it as a module, choose M here.  If unsure, say N.
-+
- config IP_NF_TARGET_REJECT
- 	tristate "REJECT target support"
- 	depends on IP_NF_FILTER
---- a/net/ipv4/netfilter/Makefile
-+++ b/net/ipv4/netfilter/Makefile
-@@ -55,6 +55,7 @@ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set
- obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
- obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
- obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
-+obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
- obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
- obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
- obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ 	/* If it's going away, ignore hook. */
+@@ -170,8 +209,19 @@
+ 	}
+ #endif
+ 	afinfo->saveroute(skb, entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	if (qih) {
++		status = qih->outfn(entry, queuenum);
++		goto imq_skip_queue;
++	}
++#endif
++
+ 	status = qh->outfn(entry, queuenum);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++imq_skip_queue:
++#endif
+ 	rcu_read_unlock();
+ 
+ 	if (status < 0) {
 --- /dev/null
-+++ b/net/ipv6/netfilter/ip6t_IMQ.c
-@@ -0,0 +1,69 @@
++++ b/net/netfilter/xt_IMQ.c
+@@ -0,0 +1,81 @@
 +/*
 + * This target marks packets to be enqueued to an imq device
 + */
 +#include <linux/module.h>
 +#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv6/ip6_tables.h>
-+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_IMQ.h>
 +#include <linux/imq.h>
 +
 +static unsigned int imq_target(struct sk_buff *pskb,
@@ -821,9 +1176,9 @@
 +			       const struct xt_target *target,
 +			       const void *targinfo)
 +{
-+	struct ip6t_imq_info *mr = (struct ip6t_imq_info *)targinfo;
++	const struct xt_imq_info *mr = targinfo;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	pskb->imq_flags = (mr->todev & IMQ_F_IFMASK) | IMQ_F_ENQUEUE;
 +
 +	return XT_CONTINUE;
 +}
@@ -834,81 +1189,55 @@
 +			  void *targinfo,
 +			  unsigned int hook_mask)
 +{
-+	struct ip6t_imq_info *mr;
-+
-+	mr = (struct ip6t_imq_info *)targinfo;
++	struct xt_imq_info *mr = targinfo;
 +
-+	if (mr->todev > IMQ_MAX_DEVS) {
++	if (mr->todev > IMQ_MAX_DEVS - 1) {
 +		printk(KERN_WARNING
 +		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++		       IMQ_MAX_DEVS - 1);
 +		return 0;
 +	}
 +
 +	return 1;
 +}
 +
-+static struct xt_target ip6t_imq_reg = {
-+	.name           = "IMQ",
-+	.family		= AF_INET6,
-+	.target         = imq_target,
-+	.targetsize	= sizeof(struct ip6t_imq_info),
-+	.table		= "mangle",
-+	.checkentry     = imq_checkentry,
-+	.me             = THIS_MODULE
++static struct xt_target xt_imq_reg[] __read_mostly = {
++	{
++		.name           = "IMQ",
++		.family		= AF_INET,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.checkentry     = imq_checkentry,
++		.me             = THIS_MODULE
++	},
++	{
++		.name           = "IMQ",
++		.family		= AF_INET6,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.checkentry     = imq_checkentry,
++		.me             = THIS_MODULE
++	},
 +};
 +
-+static int __init init(void)
++static int __init imq_init(void)
 +{
-+	return xt_register_target(&ip6t_imq_reg);
++	return xt_register_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+static void __exit fini(void)
++static void __exit imq_fini(void)
 +{
-+	xt_unregister_target(&ip6t_imq_reg);
++	xt_unregister_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+module_init(init);
-+module_exit(fini);
++module_init(imq_init);
++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_LICENSE("GPL");
---- a/net/ipv6/netfilter/Kconfig
-+++ b/net/ipv6/netfilter/Kconfig
-@@ -179,6 +179,15 @@ config IP6_NF_MANGLE
- 
- 	  To compile it as a module, choose M here.  If unsure, say N.
- 
-+config IP6_NF_TARGET_IMQ
-+	tristate "IMQ target support"
-+	depends on IP6_NF_MANGLE && IMQ
-+	help
-+          This option adds a `IMQ' target which is used to specify if and
-+          to which imq device packets should get enqueued/dequeued.
++MODULE_ALIAS("ipt_IMQ");
++MODULE_ALIAS("ip6t_IMQ");
 +
-+          To compile it as a module, choose M here.  If unsure, say N.
-+
- config IP6_NF_TARGET_HL
- 	tristate  'HL (hoplimit) target support'
- 	depends on IP6_NF_MANGLE
---- a/net/ipv6/netfilter/Makefile
-+++ b/net/ipv6/netfilter/Makefile
-@@ -6,6 +6,7 @@
- obj-$(CONFIG_IP6_NF_IPTABLES) += ip6_tables.o
- obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
- obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
-+obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
- obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
- obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
- 
---- a/net/sched/sch_generic.c
-+++ b/net/sched/sch_generic.c
-@@ -203,6 +203,7 @@ void __qdisc_run(struct net_device *dev)
- 
- 	clear_bit(__LINK_STATE_QDISC_RUNNING, &dev->state);
- }
-+EXPORT_SYMBOL(__qdisc_run);
- 
- static void dev_watchdog(unsigned long arg)
- {
diff --git a/target/linux/generic-2.6/patches-2.6.26/180-netfilter_depends.patch b/target/linux/generic-2.6/patches-2.6.26/180-netfilter_depends.patch
index e495b3db41..e7d666e22d 100644
--- a/target/linux/generic-2.6/patches-2.6.26/180-netfilter_depends.patch
+++ b/target/linux/generic-2.6/patches-2.6.26/180-netfilter_depends.patch
@@ -1,6 +1,6 @@
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -157,7 +157,7 @@ config NF_CONNTRACK_FTP
+@@ -157,7 +157,7 @@
  
  config NF_CONNTRACK_H323
  	tristate "H.323 protocol support"
@@ -9,7 +9,7 @@
  	depends on NETFILTER_ADVANCED
  	help
  	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
-@@ -435,7 +435,7 @@ config NETFILTER_XT_TARGET_CONNSECMARK
+@@ -447,7 +447,7 @@
  
  config NETFILTER_XT_TARGET_TCPMSS
  	tristate '"TCPMSS" target support'
diff --git a/target/linux/generic-2.6/patches-2.6.26/190-netfilter_rtsp.patch b/target/linux/generic-2.6/patches-2.6.26/190-netfilter_rtsp.patch
index 73ce330db5..097cbb651c 100644
--- a/target/linux/generic-2.6/patches-2.6.26/190-netfilter_rtsp.patch
+++ b/target/linux/generic-2.6/patches-2.6.26/190-netfilter_rtsp.patch
@@ -294,7 +294,7 @@
 +#endif /* _NETFILTER_MIME_H */
 --- a/net/ipv4/netfilter/Makefile
 +++ b/net/ipv4/netfilter/Makefile
-@@ -23,6 +23,7 @@ obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_am
+@@ -23,6 +23,7 @@
  obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
  obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
  obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
@@ -304,7 +304,7 @@
  obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -270,6 +270,16 @@ config NF_CONNTRACK_TFTP
+@@ -270,6 +270,16 @@
  
  	  To compile it as a module, choose M here.  If unsure, say N.
  
@@ -323,7 +323,7 @@
  	depends on NF_CONNTRACK
 --- a/net/netfilter/Makefile
 +++ b/net/netfilter/Makefile
-@@ -33,6 +33,7 @@ obj-$(CONFIG_NF_CONNTRACK_PPTP) += nf_co
+@@ -33,6 +33,7 @@
  obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
  obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
  obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
@@ -333,7 +333,7 @@
  obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
 --- a/net/ipv4/netfilter/Kconfig
 +++ b/net/ipv4/netfilter/Kconfig
-@@ -282,6 +282,11 @@ config NF_NAT_IRC
+@@ -271,6 +271,11 @@
  	depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
  	default NF_NAT && NF_CONNTRACK_IRC
  
diff --git a/target/linux/generic-2.6/patches-2.6.27/150-netfilter_imq.patch b/target/linux/generic-2.6/patches-2.6.27/150-netfilter_imq.patch
index 46adc66e45..0814520f9a 100644
--- a/target/linux/generic-2.6/patches-2.6.27/150-netfilter_imq.patch
+++ b/target/linux/generic-2.6/patches-2.6.27/150-netfilter_imq.patch
@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/drivers/net/imq.c
-@@ -0,0 +1,474 @@
+@@ -0,0 +1,566 @@
 +/*
 + *             Pseudo-driver for the intermediate queue device.
 + *
@@ -51,10 +51,27 @@
 + *
 + *
 + *             2008/06/17 - 2.6.25 - Changed imq.c to use qdisc_run() instead
-+ *	       of qdisc_restart() and moved qdisc_run() to tasklet to avoid
++ *             of qdisc_restart() and moved qdisc_run() to tasklet to avoid
 + *             recursive locking. New initialization routines to fix 'rmmod' not
 + *             working anymore. Used code from ifb.c. (Jussi Kivilinna)
 + *
++ *             2008/08/06 - 2.6.26 - (JK)
++ *              - Replaced tasklet with 'netif_schedule()'.
++ *              - Cleaned up and added comments for imq_nf_queue().
++ *
++ *             2009/04/12
++ *              - Add skb_save_cb/skb_restore_cb helper functions for backuping
++ *                control buffer. This is needed because qdisc-layer on kernels
++ *                2.6.27 and newer overwrite control buffer. (Jussi Kivilinna)
++ *              - Add better locking for IMQ device. Hopefully this will solve
++ *                SMP issues. (Jussi Kivilinna)
++ *              - Port to 2.6.27
++ *
++ *             2009/04/20 - (Jussi Kivilinna)
++ *              - Fix rmmod not working
++ *              - Use netdevice feature flags to avoid extra packet handling
++ *                by core networking layer and possibly increase performance.
++ *
 + *	       Also, many thanks to pablo Sebastian Greco for making the initial
 + *	       patch and to those who helped the testing.
 + *
@@ -64,8 +81,10 @@
 +#include <linux/module.h>
 +#include <linux/kernel.h>
 +#include <linux/moduleparam.h>
++#include <linux/list.h>
 +#include <linux/skbuff.h>
 +#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
 +#include <linux/rtnetlink.h>
 +#include <linux/if_arp.h>
 +#include <linux/netfilter.h>
@@ -77,11 +96,6 @@
 +#include <net/pkt_sched.h>
 +#include <net/netfilter/nf_queue.h>
 +
-+struct imq_private {
-+	struct tasklet_struct tasklet;
-+	unsigned long tasklet_pending;
-+};
-+
 +static nf_hookfn imq_nf_hook;
 +
 +static struct nf_hook_ops imq_ingress_ipv4 = {
@@ -140,8 +154,11 @@
 +static unsigned int numdevs = IMQ_MAX_DEVS;
 +#endif
 +
++static DEFINE_SPINLOCK(imq_nf_queue_lock);
++
 +static struct net_device *imq_devs_cache[IMQ_MAX_DEVS];
 +
++
 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
 +{
 +	return &dev->stats;
@@ -153,12 +170,35 @@
 +	struct nf_queue_entry *entry = skb->nf_queue_entry;
 +
 +	if (entry) {
-+		if (entry->indev)
-+			dev_put(entry->indev);
-+		if (entry->outdev)
-+			dev_put(entry->outdev);
++		nf_queue_entry_release_refs(entry);
 +		kfree(entry);
 +	}
++
++	skb_restore_cb(skb); /* kfree backup */
++}
++
++static void imq_nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
++{
++	int status;
++
++	if (!entry->next_outfn) {
++		spin_lock_bh(&imq_nf_queue_lock);
++		nf_reinject(entry, verdict);
++		spin_unlock_bh(&imq_nf_queue_lock);
++		return;
++	}
++
++	rcu_read_lock();
++	local_bh_disable();
++	status = entry->next_outfn(entry, entry->next_queuenum);
++	local_bh_enable();
++	if (status < 0) {
++		nf_queue_entry_release_refs(entry);
++		kfree_skb(entry->skb);
++		kfree(entry);
++	}
++
++	rcu_read_unlock();
 +}
 +
 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -169,26 +209,35 @@
 +	skb->imq_flags = 0;
 +	skb->destructor = NULL;
 +
++	skb_restore_cb(skb); /* restore skb->cb */
++
 +	dev->trans_start = jiffies;
-+	nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
++	imq_nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
 +	return 0;
 +}
 +
 +static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num)
 +{
 +	struct net_device *dev;
-+	struct imq_private *priv;
-+	struct sk_buff *skb2 = NULL;
++	struct sk_buff *skb_orig, *skb, *skb_shared;
 +	struct Qdisc *q;
-+	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
-+	int ret = -1;
-+
-+	if (index > numdevs)
-+		return -1;
++	struct netdev_queue *txq;
++	int users, index;
++	int retval = -EINVAL;
++
++	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);
++		retval = -EINVAL;
++		goto out;
++	}
 +
 +	/* check for imq device by index from cache */
 +	dev = imq_devs_cache[index];
-+	if (!dev) {
++	if (unlikely(!dev)) {
 +		char buf[8];
 +
 +		/* get device by name and cache result */
@@ -197,49 +246,90 @@
 +		if (!dev) {
 +			/* not found ?!*/
 +			BUG();
-+			return -1;
++			retval = -ENODEV;
++			goto out;
 +		}
 +
 +		imq_devs_cache[index] = dev;
++		dev_put(dev);
 +	}
 +
-+	priv = netdev_priv(dev);
-+	if (!(dev->flags & IFF_UP)) {
++	if (unlikely(!(dev->flags & IFF_UP))) {
 +		entry->skb->imq_flags = 0;
-+		nf_reinject(entry, NF_ACCEPT);
-+		return 0;
++		imq_nf_reinject(entry, NF_ACCEPT);
++		retval = 0;
++		goto out;
 +	}
 +	dev->last_rx = jiffies;
 +
-+	if (entry->skb->destructor) {
-+		skb2 = entry->skb;
-+		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
-+		if (!entry->skb)
-+			return -1;
++	skb = entry->skb;
++	skb_orig = NULL;
++
++	/* skb has owner? => make clone */
++	if (unlikely(skb->destructor)) {
++		skb_orig = skb;
++		skb = skb_clone(skb, GFP_ATOMIC);
++		if (!skb) {
++			retval = -ENOMEM;
++			goto out;
++		}
++		entry->skb = skb;
 +	}
-+	entry->skb->nf_queue_entry = entry;
 +
-+	dev->stats.rx_bytes += entry->skb->len;
++	skb->nf_queue_entry = entry;
++
++	dev->stats.rx_bytes += skb->len;
 +	dev->stats.rx_packets++;
 +
-+	spin_lock_bh(&dev->queue_lock);
-+	q = dev->qdisc;
-+	if (q->enqueue) {
-+		q->enqueue(skb_get(entry->skb), q);
-+		if (skb_shared(entry->skb)) {
-+			entry->skb->destructor = imq_skb_destructor;
-+			kfree_skb(entry->skb);
-+			ret = 0;
-+		}
-+	}
-+	if (!test_and_set_bit(1, &priv->tasklet_pending))
-+		tasklet_schedule(&priv->tasklet);
-+	spin_unlock_bh(&dev->queue_lock);
++	txq = dev_pick_tx(dev, skb);
 +
-+	if (skb2)
-+		kfree_skb(ret ? entry->skb : skb2);
++	q = rcu_dereference(txq->qdisc);
++	if (unlikely(!q->enqueue))
++		goto packet_not_eaten_by_imq_dev;
 +
-+	return ret;
++	spin_lock_bh(qdisc_lock(q));
++
++	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 */
++	qdisc_enqueue_root(skb_shared, q); /* might kfree_skb */
++
++	if (likely(atomic_read(&skb_shared->users) == users + 1)) {
++		kfree_skb(skb_shared); /* decrease reference count by one */
++
++		skb->destructor = &imq_skb_destructor;
++
++		/* cloned? */
++		if (skb_orig)
++			kfree_skb(skb_orig); /* free original */
++
++		spin_unlock_bh(qdisc_lock(q));
++
++		/* schedule qdisc dequeue */
++		__netif_schedule(q);
++
++		retval = 0;
++		goto out;
++	} else {
++		skb_restore_cb(skb_shared); /* restore skb->cb */
++		/* 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. */
++		spin_unlock_bh(qdisc_lock(q));
++		goto packet_not_eaten_by_imq_dev;
++	}
++
++packet_not_eaten_by_imq_dev:
++	/* cloned? restore original */
++	if (skb_orig) {
++		kfree_skb(skb);
++		entry->skb = skb_orig;
++	}
++	retval = -1;
++out:
++	return retval;
 +}
 +
 +static struct nf_queue_handler nfqh = {
@@ -247,17 +337,6 @@
 +	.outfn = imq_nf_queue,
 +};
 +
-+static void qdisc_run_tasklet(unsigned long arg)
-+{
-+	struct net_device *dev = (struct net_device *)arg;
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	spin_lock(&dev->queue_lock);
-+	qdisc_run(dev);
-+	clear_bit(1, &priv->tasklet_pending);
-+	spin_unlock(&dev->queue_lock);
-+}
-+
 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
 +				const struct net_device *indev,
 +				const struct net_device *outdev,
@@ -271,21 +350,13 @@
 +
 +static int imq_close(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_kill(&priv->tasklet);
 +	netif_stop_queue(dev);
-+
 +	return 0;
 +}
 +
 +static int imq_open(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_init(&priv->tasklet, qdisc_run_tasklet, (unsigned long)dev);
 +	netif_start_queue(dev);
-+
 +	return 0;
 +}
 +
@@ -299,59 +370,74 @@
 +	dev->mtu                = 16000;
 +	dev->tx_queue_len       = 11000;
 +	dev->flags              = IFF_NOARP;
++	dev->features           = NETIF_F_SG | NETIF_F_FRAGLIST |
++				  NETIF_F_GSO | NETIF_F_HW_CSUM |
++				  NETIF_F_HIGHDMA;
++}
++
++static int imq_validate(struct nlattr *tb[], struct nlattr *data[])
++{
++	int ret = 0;
++
++	if (tb[IFLA_ADDRESS]) {
++		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
++			ret = -EINVAL;
++			goto end;
++		}
++		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
++			ret = -EADDRNOTAVAIL;
++			goto end;
++		}
++	}
++	return 0;
++end:
++	printk(KERN_WARNING "IMQ: imq_validate failed (%d)\n", ret);
++	return ret;
 +}
 +
 +static struct rtnl_link_ops imq_link_ops __read_mostly = {
 +	.kind		= "imq",
-+	.priv_size	= sizeof(struct imq_private),
++	.priv_size	= 0,
 +	.setup		= imq_setup,
++	.validate	= imq_validate,
 +};
 +
 +static int __init imq_init_hooks(void)
 +{
 +	int err;
 +
-+	err = nf_register_queue_handler(PF_INET, &nfqh);
-+	if (err)
-+		goto err1;
++	nf_register_queue_imq_handler(&nfqh);
 +
 +	err = nf_register_hook(&imq_ingress_ipv4);
 +	if (err)
-+		goto err2;
++		goto err1;
 +
 +	err = nf_register_hook(&imq_egress_ipv4);
 +	if (err)
-+		goto err3;
++		goto err2;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+	err = nf_register_queue_handler(PF_INET6, &nfqh);
-+	if (err)
-+		goto err4;
-+
 +	err = nf_register_hook(&imq_ingress_ipv6);
 +	if (err)
-+		goto err5;
++		goto err3;
 +
 +	err = nf_register_hook(&imq_egress_ipv6);
 +	if (err)
-+		goto err6;
++		goto err4;
 +#endif
 +
 +	return 0;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+err6:
-+	nf_unregister_hook(&imq_ingress_ipv6);
-+err5:
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +err4:
++	nf_unregister_hook(&imq_ingress_ipv6);
++err3:
 +	nf_unregister_hook(&imq_egress_ipv4);
 +#endif
-+err3:
-+	nf_unregister_hook(&imq_ingress_ipv4);
 +err2:
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++	nf_unregister_hook(&imq_ingress_ipv4);
 +err1:
++	nf_unregister_queue_imq_handler();
 +	return err;
 +}
 +
@@ -360,7 +446,7 @@
 +	struct net_device *dev;
 +	int ret;
 +
-+	dev = alloc_netdev(sizeof(struct imq_private), "imq%d", imq_setup);
++	dev = alloc_netdev(0, "imq%d", imq_setup);
 +	if (!dev)
 +		return -ENOMEM;
 +
@@ -383,7 +469,7 @@
 +{
 +	int err, i;
 +
-+	if (!numdevs || numdevs > IMQ_MAX_DEVS) {
++	if (numdevs < 1 || numdevs > IMQ_MAX_DEVS) {
 +		printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
 +		       IMQ_MAX_DEVS);
 +		return -EINVAL;
@@ -408,6 +494,12 @@
 +{
 +	int err;
 +
++#if defined(CONFIG_IMQ_NUM_DEVS)
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS > 16);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS < 2);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS - 1 > IMQ_F_IFMASK);
++#endif
++
 +	err = imq_init_devs();
 +	if (err) {
 +		printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
@@ -443,11 +535,11 @@
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 +	nf_unregister_hook(&imq_ingress_ipv6);
 +	nf_unregister_hook(&imq_egress_ipv6);
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +#endif
 +	nf_unregister_hook(&imq_ingress_ipv4);
 +	nf_unregister_hook(&imq_egress_ipv4);
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++
++	nf_unregister_queue_imq_handler();
 +}
 +
 +static void __exit imq_cleanup_devs(void)
@@ -477,7 +569,7 @@
 +
 --- a/drivers/net/Kconfig
 +++ b/drivers/net/Kconfig
-@@ -109,6 +109,129 @@ config EQUALIZER
+@@ -109,6 +109,129 @@
  	  To compile this driver as a module, choose M here: the module
  	  will be called eql.  If unsure, say N.
  
@@ -609,7 +701,7 @@
  	select CRC32
 --- a/drivers/net/Makefile
 +++ b/drivers/net/Makefile
-@@ -144,6 +144,7 @@ obj-$(CONFIG_SLHC) += slhc.o
+@@ -144,6 +144,7 @@
  obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
  
  obj-$(CONFIG_DUMMY) += dummy.o
@@ -619,52 +711,102 @@
  obj-$(CONFIG_DE600) += de600.o
 --- /dev/null
 +++ b/include/linux/imq.h
-@@ -0,0 +1,9 @@
+@@ -0,0 +1,13 @@
 +#ifndef _IMQ_H
 +#define _IMQ_H
 +
-+#define IMQ_MAX_DEVS   16
++/* IFMASK (16 device indexes, 0 to 15) and flag(s) fit in 5 bits */
++#define IMQ_F_BITS	5
 +
-+#define IMQ_F_IFMASK   0x7f
-+#define IMQ_F_ENQUEUE  0x80
++#define IMQ_F_IFMASK	0x0f
++#define IMQ_F_ENQUEUE	0x10
++
++#define IMQ_MAX_DEVS	(IMQ_F_IFMASK + 1)
 +
 +#endif /* _IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IPT_IMQ_H
 +#define _IPT_IMQ_H
 +
-+struct ipt_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ipt_imq_info xt_imq_info
 +
 +#endif /* _IPT_IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IP6T_IMQ_H
 +#define _IP6T_IMQ_H
 +
-+struct ip6t_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ip6t_imq_info xt_imq_info
 +
 +#endif /* _IP6T_IMQ_H */
++
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -302,6 +302,10 @@ struct sk_buff {
+@@ -28,6 +28,9 @@
+ #include <linux/rcupdate.h>
+ #include <linux/dmaengine.h>
+ #include <linux/hrtimer.h>
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#include <linux/imq.h>
++#endif
+ 
+ #define HAVE_ALLOC_SKB		/* For the drivers to know */
+ #define HAVE_ALIGNABLE_SKB	/* Ditto 8)		   */
+@@ -272,6 +275,9 @@
+ 	 * first. This is owned by whoever has the skb queued ATM.
+ 	 */
+ 	char			cb[48];
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	void			*cb_next;
++#endif
+ 
+ 	unsigned int		len,
+ 				data_len;
+@@ -302,6 +308,9 @@
  	struct nf_conntrack	*nfct;
  	struct sk_buff		*nfct_reasm;
  #endif
 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+	unsigned char			imq_flags;
 +	struct nf_queue_entry	*nf_queue_entry;
 +#endif
  #ifdef CONFIG_BRIDGE_NETFILTER
  	struct nf_bridge_info	*nf_bridge;
  #endif
-@@ -1633,6 +1637,10 @@ static inline void __nf_copy(struct sk_b
+@@ -321,6 +330,9 @@
+ 	__u8			do_not_encrypt:1;
+ #endif
+ 	/* 0/13/14 bit hole */
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	__u8			imq_flags:IMQ_F_BITS;
++#endif
+ 
+ #ifdef CONFIG_NET_DMA
+ 	dma_cookie_t		dma_cookie;
+@@ -353,6 +365,12 @@
+ 
+ #include <asm/system.h>
+ 
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern int skb_save_cb(struct sk_buff *skb);
++extern int skb_restore_cb(struct sk_buff *skb);
++#endif
++
+ extern void kfree_skb(struct sk_buff *skb);
+ extern void	       __kfree_skb(struct sk_buff *skb);
+ extern struct sk_buff *__alloc_skb(unsigned int size,
+@@ -1633,6 +1651,10 @@
  	dst->nfct_reasm = src->nfct_reasm;
  	nf_conntrack_get_reasm(src->nfct_reasm);
  #endif
@@ -687,7 +829,7 @@
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  #include <linux/stat.h>
-@@ -1624,7 +1627,11 @@ int dev_hard_start_xmit(struct sk_buff *
+@@ -1624,7 +1627,11 @@
  			struct netdev_queue *txq)
  {
  	if (likely(!skb->next)) {
@@ -700,118 +842,351 @@
  			dev_queue_xmit_nit(skb, dev);
  
  		if (netif_needs_gso(dev, skb)) {
+@@ -1715,8 +1722,7 @@
+ 	return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
+ }
+ 
+-static struct netdev_queue *dev_pick_tx(struct net_device *dev,
+-					struct sk_buff *skb)
++struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb)
+ {
+ 	u16 queue_index = 0;
+ 
+@@ -1728,6 +1734,7 @@
+ 	skb_set_queue_mapping(skb, queue_index);
+ 	return netdev_get_tx_queue(dev, queue_index);
+ }
++EXPORT_SYMBOL(dev_pick_tx);
+ 
+ /**
+  *	dev_queue_xmit - transmit a buffer
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -915,6 +915,7 @@
+ extern int		dev_open(struct net_device *dev);
+ extern int		dev_close(struct net_device *dev);
+ extern void		dev_disable_lro(struct net_device *dev);
++extern struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb);
+ extern int		dev_queue_xmit(struct sk_buff *skb);
+ extern int		register_netdevice(struct net_device *dev);
+ extern void		unregister_netdevice(struct net_device *dev);
 --- /dev/null
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -0,0 +1,69 @@
-+/*
-+ * This target marks packets to be enqueued to an imq device
-+ */
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_ipv4/ipt_IMQ.h>
-+#include <linux/imq.h>
++++ b/include/linux/netfilter/xt_IMQ.h
+@@ -0,0 +1,9 @@
++#ifndef _XT_IMQ_H
++#define _XT_IMQ_H
 +
-+static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++struct xt_imq_info {
++	unsigned int todev;     /* target imq device */
++};
++
++#endif /* _XT_IMQ_H */
++
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -13,6 +13,12 @@
+ 	struct net_device	*indev;
+ 	struct net_device	*outdev;
+ 	int			(*okfn)(struct sk_buff *);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	int			(*next_outfn)(struct nf_queue_entry *entry,
++					      unsigned int queuenum);
++	unsigned int		next_queuenum;
++#endif
+ };
+ 
+ #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
+@@ -30,5 +36,11 @@
+ 				       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);
++extern void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern void nf_register_queue_imq_handler(const struct nf_queue_handler *qh);
++extern void nf_unregister_queue_imq_handler(void);
++#endif
+ 
+ #endif /* _NF_QUEUE_H */
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -69,6 +69,9 @@
+ 
+ static 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)
+@@ -88,6 +91,80 @@
+ 	return 1;
+ }
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++/* Control buffer save/restore for IMQ devices */
++struct skb_cb_table {
++	void			*cb_next;
++	atomic_t		refcnt;
++	char      		cb[48];
++};
++
++static DEFINE_SPINLOCK(skb_cb_store_lock);
++
++int skb_save_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	next = kmem_cache_alloc(skbuff_cb_store_cache, GFP_ATOMIC);
++	if (!next)
++		return -ENOMEM;
 +
-+	return XT_CONTINUE;
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(next->cb, skb->cb, sizeof(skb->cb));
++	next->cb_next = skb->cb_next;
++
++	atomic_set(&next->refcnt, 1);
++
++	skb->cb_next = next;
++	return 0;
 +}
++EXPORT_SYMBOL(skb_save_cb);
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *e,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++int skb_restore_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr;
++	struct skb_cb_table *next;
 +
-+	mr = (struct ipt_imq_info *)targinfo;
-+
-+	if (mr->todev > IMQ_MAX_DEVS) {
-+		printk(KERN_WARNING
-+		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++	if (!skb->cb_next)
 +		return 0;
++
++	next = skb->cb_next;
++
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(skb->cb, next->cb, sizeof(skb->cb));
++	skb->cb_next = next->cb_next;
++
++	spin_lock(&skb_cb_store_lock);
++
++	if (atomic_dec_and_test(&next->refcnt)) {
++		kmem_cache_free(skbuff_cb_store_cache, next);
 +	}
 +
-+	return 1;
++	spin_unlock(&skb_cb_store_lock);
++
++	return 0;
 +}
++EXPORT_SYMBOL(skb_restore_cb);
 +
-+static struct xt_target ipt_imq_reg = {
-+	.name		= "IMQ",
-+	.family		= AF_INET,
-+	.target		= imq_target,
-+	.targetsize	= sizeof(struct ipt_imq_info),
-+	.checkentry	= imq_checkentry,
-+	.me		= THIS_MODULE,
-+	.table		= "mangle"
-+};
++static void skb_copy_stored_cb(struct sk_buff *new, struct sk_buff *old)
++{
++	struct skb_cb_table *next;
++
++	if (!old->cb_next) {
++		new->cb_next = 0;
++		return;
++	}
++
++	spin_lock(&skb_cb_store_lock);
++
++	next = old->cb_next;
++	atomic_inc(&next->refcnt);
++	new->cb_next = next;
++
++	spin_unlock(&skb_cb_store_lock);
++}
++#endif
+ 
+ /* Pipe buffer operations for a socket. */
+ static struct pipe_buf_operations sock_pipe_buf_ops = {
+@@ -362,6 +439,15 @@
+ 		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. */
++	while(skb->cb_next != NULL) {
++		printk(KERN_WARNING "kfree_skb: skb->cb_next: %08x\n",
++			skb->cb_next);
++		skb_restore_cb(skb);
++	}
++#endif
+ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ 	nf_conntrack_put(skb->nfct);
+ 	nf_conntrack_put_reasm(skb->nfct_reasm);
+@@ -424,6 +510,9 @@
+ 	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);
++#endif
+ 	new->csum_start		= old->csum_start;
+ 	new->csum_offset	= old->csum_offset;
+ 	new->local_df		= old->local_df;
+@@ -2326,6 +2415,13 @@
+ 						0,
+ 						SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+ 						NULL);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	skbuff_cb_store_cache = kmem_cache_create("skbuff_cb_store_cache",
++						  sizeof(struct skb_cb_table),
++						  0,
++						  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
++						  NULL);
++#endif
+ }
+ 
+ /**
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -342,6 +342,18 @@
+ 
+ 	  To compile it as a module, choose M here.  If unsure, say N.
+ 
++config NETFILTER_XT_TARGET_IMQ
++        tristate '"IMQ" target support'
++	depends on NETFILTER_XTABLES
++	depends on IP_NF_MANGLE || IP6_NF_MANGLE
++	select IMQ
++	default m if NETFILTER_ADVANCED=n
++        help
++          This option adds a `IMQ' target which is used to specify if and
++          to which imq device packets should get enqueued/dequeued.
++
++          To compile it as a module, choose M here.  If unsure, say N.
++
+ config NETFILTER_XT_TARGET_MARK
+ 	tristate '"MARK" target support'
+ 	depends on NETFILTER_XTABLES
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -42,6 +42,7 @@
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
++obj-$(CONFIG_NETFILTER_XT_TARGET_IMQ) += xt_IMQ.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG) += xt_NFLOG.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -20,6 +20,26 @@
+ 
+ static DEFINE_MUTEX(queue_handler_mutex);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++static const struct nf_queue_handler *queue_imq_handler;
 +
-+static int __init init(void)
++void nf_register_queue_imq_handler(const struct nf_queue_handler *qh)
 +{
-+	return xt_register_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, qh);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_register_queue_imq_handler);
 +
-+static void __exit fini(void)
++void nf_unregister_queue_imq_handler(void)
 +{
-+	xt_unregister_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, NULL);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_unregister_queue_imq_handler);
++#endif
 +
-+module_init(init);
-+module_exit(fini);
+ /* 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(int pf, const struct nf_queue_handler *qh)
+@@ -80,7 +100,7 @@
+ }
+ 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)
+@@ -100,6 +120,7 @@
+ 	/* 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
+@@ -121,12 +142,26 @@
+ #endif
+ 	const struct nf_afinfo *afinfo;
+ 	const struct nf_queue_handler *qh;
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	const struct nf_queue_handler *qih = NULL;
++#endif
+ 
+ 	/* QUEUE == DROP if noone is waiting, to be safe. */
+ 	rcu_read_lock();
+ 
+ 	qh = rcu_dereference(queue_handler[pf]);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
++	if (pf == PF_INET || pf == PF_INET6)
++#else
++	if (pf == PF_INET)
++#endif
++		qih = rcu_dereference(queue_imq_handler);
 +
-+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
-+MODULE_LICENSE("GPL");
---- a/net/ipv4/netfilter/Kconfig
-+++ b/net/ipv4/netfilter/Kconfig
-@@ -123,6 +123,17 @@ config IP_NF_FILTER
++	if (!qh && !qih)
++#else /* !IMQ */
+ 	if (!qh)
++#endif
+ 		goto err_unlock;
  
- 	  To compile it as a module, choose M here.  If unsure, say N.
+ 	afinfo = nf_get_afinfo(pf);
+@@ -145,6 +180,10 @@
+ 		.indev	= indev,
+ 		.outdev	= outdev,
+ 		.okfn	= okfn,
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++		.next_outfn = qh ? qh->outfn : NULL,
++		.next_queuenum = queuenum,
++#endif
+ 	};
+ 
+ 	/* If it's going away, ignore hook. */
+@@ -170,8 +209,19 @@
+ 	}
+ #endif
+ 	afinfo->saveroute(skb, entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	if (qih) {
++		status = qih->outfn(entry, queuenum);
++		goto imq_skip_queue;
++	}
++#endif
++
+ 	status = qh->outfn(entry, queuenum);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++imq_skip_queue:
++#endif
+ 	rcu_read_unlock();
  
-+config IP_NF_TARGET_IMQ
-+       tristate "IMQ target support"
-+       depends on IP_NF_MANGLE && IMQ
-+       help
-+         This option adds a `IMQ' target which is used to specify if and
-+         to which IMQ device packets should get enqueued/dequeued.
-+
-+	 For more information visit: http://www.linuximq.net/
-+
-+         To compile it as a module, choose M here.  If unsure, say N.
-+
- config IP_NF_TARGET_REJECT
- 	tristate "REJECT target support"
- 	depends on IP_NF_FILTER
---- a/net/ipv4/netfilter/Makefile
-+++ b/net/ipv4/netfilter/Makefile
-@@ -56,6 +56,7 @@ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set
- obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
- obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
- obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
-+obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
- obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
- obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
- obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ 	if (status < 0) {
 --- /dev/null
-+++ b/net/ipv6/netfilter/ip6t_IMQ.c
-@@ -0,0 +1,69 @@
++++ b/net/netfilter/xt_IMQ.c
+@@ -0,0 +1,81 @@
 +/*
 + * This target marks packets to be enqueued to an imq device
 + */
 +#include <linux/module.h>
 +#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv6/ip6_tables.h>
-+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_IMQ.h>
 +#include <linux/imq.h>
 +
 +static unsigned int imq_target(struct sk_buff *pskb,
@@ -821,9 +1196,9 @@
 +			       const struct xt_target *target,
 +			       const void *targinfo)
 +{
-+	struct ip6t_imq_info *mr = (struct ip6t_imq_info *)targinfo;
++	const struct xt_imq_info *mr = targinfo;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	pskb->imq_flags = (mr->todev & IMQ_F_IFMASK) | IMQ_F_ENQUEUE;
 +
 +	return XT_CONTINUE;
 +}
@@ -834,81 +1209,55 @@
 +			  void *targinfo,
 +			  unsigned int hook_mask)
 +{
-+	struct ip6t_imq_info *mr;
-+
-+	mr = (struct ip6t_imq_info *)targinfo;
++	struct xt_imq_info *mr = targinfo;
 +
-+	if (mr->todev > IMQ_MAX_DEVS) {
++	if (mr->todev > IMQ_MAX_DEVS - 1) {
 +		printk(KERN_WARNING
 +		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++		       IMQ_MAX_DEVS - 1);
 +		return 0;
 +	}
 +
 +	return 1;
 +}
 +
-+static struct xt_target ip6t_imq_reg = {
-+	.name           = "IMQ",
-+	.family		= AF_INET6,
-+	.target         = imq_target,
-+	.targetsize	= sizeof(struct ip6t_imq_info),
-+	.table		= "mangle",
-+	.checkentry     = imq_checkentry,
-+	.me             = THIS_MODULE
++static struct xt_target xt_imq_reg[] __read_mostly = {
++	{
++		.name           = "IMQ",
++		.family		= AF_INET,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.checkentry     = imq_checkentry,
++		.me             = THIS_MODULE
++	},
++	{
++		.name           = "IMQ",
++		.family		= AF_INET6,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.checkentry     = imq_checkentry,
++		.me             = THIS_MODULE
++	},
 +};
 +
-+static int __init init(void)
++static int __init imq_init(void)
 +{
-+	return xt_register_target(&ip6t_imq_reg);
++	return xt_register_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+static void __exit fini(void)
++static void __exit imq_fini(void)
 +{
-+	xt_unregister_target(&ip6t_imq_reg);
++	xt_unregister_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+module_init(init);
-+module_exit(fini);
++module_init(imq_init);
++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_LICENSE("GPL");
---- a/net/ipv6/netfilter/Kconfig
-+++ b/net/ipv6/netfilter/Kconfig
-@@ -179,6 +179,15 @@ config IP6_NF_MANGLE
- 
- 	  To compile it as a module, choose M here.  If unsure, say N.
- 
-+config IP6_NF_TARGET_IMQ
-+	tristate "IMQ target support"
-+	depends on IP6_NF_MANGLE && IMQ
-+	help
-+          This option adds a `IMQ' target which is used to specify if and
-+          to which imq device packets should get enqueued/dequeued.
-+
-+          To compile it as a module, choose M here.  If unsure, say N.
++MODULE_ALIAS("ipt_IMQ");
++MODULE_ALIAS("ip6t_IMQ");
 +
- config IP6_NF_TARGET_HL
- 	tristate  'HL (hoplimit) target support'
- 	depends on IP6_NF_MANGLE
---- a/net/ipv6/netfilter/Makefile
-+++ b/net/ipv6/netfilter/Makefile
-@@ -6,6 +6,7 @@
- obj-$(CONFIG_IP6_NF_IPTABLES) += ip6_tables.o
- obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
- obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
-+obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
- obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
- obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
- obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
---- a/net/sched/sch_generic.c
-+++ b/net/sched/sch_generic.c
-@@ -188,6 +188,7 @@ void __qdisc_run(struct Qdisc *q)
- 
- 	clear_bit(__QDISC_STATE_RUNNING, &q->state);
- }
-+EXPORT_SYMBOL(__qdisc_run);
- 
- static void dev_watchdog(unsigned long arg)
- {
diff --git a/target/linux/generic-2.6/patches-2.6.27/151-netfilter_imq_2.6.27.patch b/target/linux/generic-2.6/patches-2.6.27/151-netfilter_imq_2.6.27.patch
deleted file mode 100644
index 9390db7424..0000000000
--- a/target/linux/generic-2.6/patches-2.6.27/151-netfilter_imq_2.6.27.patch
+++ /dev/null
@@ -1,75 +0,0 @@
---- a/drivers/net/imq.c
-+++ b/drivers/net/imq.c
-@@ -178,10 +178,11 @@ static int imq_nf_queue(struct nf_queue_
- 	struct sk_buff *skb2 = NULL;
- 	struct Qdisc *q;
- 	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
--	int ret = -1;
-+	struct netdev_queue *txq;
-+	int ret = -EINVAL;
- 
- 	if (index > numdevs)
--		return -1;
-+		return ret;
- 
- 	/* check for imq device by index from cache */
- 	dev = imq_devs_cache[index];
-@@ -194,7 +195,7 @@ static int imq_nf_queue(struct nf_queue_
- 		if (!dev) {
- 			/* not found ?!*/
- 			BUG();
--			return -1;
-+			return ret;
- 		}
- 
- 		imq_devs_cache[index] = dev;
-@@ -212,17 +213,19 @@ static int imq_nf_queue(struct nf_queue_
- 		skb2 = entry->skb;
- 		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
- 		if (!entry->skb)
--			return -1;
-+			return -ENOMEM;
- 	}
- 	entry->skb->nf_queue_entry = entry;
- 
- 	dev->stats.rx_bytes += entry->skb->len;
- 	dev->stats.rx_packets++;
- 
--	spin_lock_bh(&dev->queue_lock);
--	q = dev->qdisc;
-+	txq = netdev_get_tx_queue(dev, 0);
-+	__netif_tx_lock_bh(txq);
-+	q = txq->qdisc;
-+
- 	if (q->enqueue) {
--		q->enqueue(skb_get(entry->skb), q);
-+		qdisc_enqueue_root(skb_get(entry->skb), q);
- 		if (skb_shared(entry->skb)) {
- 			entry->skb->destructor = imq_skb_destructor;
- 			kfree_skb(entry->skb);
-@@ -231,7 +234,7 @@ static int imq_nf_queue(struct nf_queue_
- 	}
- 	if (!test_and_set_bit(1, &priv->tasklet_pending))
- 		tasklet_schedule(&priv->tasklet);
--	spin_unlock_bh(&dev->queue_lock);
-+	__netif_tx_unlock_bh(txq);
- 
- 	if (skb2)
- 		kfree_skb(ret ? entry->skb : skb2);
-@@ -248,11 +251,13 @@ static void qdisc_run_tasklet(unsigned l
- {
- 	struct net_device *dev = (struct net_device *)arg;
- 	struct imq_private *priv = netdev_priv(dev);
-+	struct netdev_queue *txq;
- 
--	spin_lock(&dev->queue_lock);
--	qdisc_run(dev);
-+	netif_tx_lock(dev);
-+	txq = netdev_get_tx_queue(dev, 0);
-+	qdisc_run(txq->qdisc);
- 	clear_bit(1, &priv->tasklet_pending);
--	spin_unlock(&dev->queue_lock);
-+	netif_tx_unlock(dev);
- }
- 
- static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
diff --git a/target/linux/generic-2.6/patches-2.6.27/180-netfilter_depends.patch b/target/linux/generic-2.6/patches-2.6.27/180-netfilter_depends.patch
index 1914818744..0897def326 100644
--- a/target/linux/generic-2.6/patches-2.6.27/180-netfilter_depends.patch
+++ b/target/linux/generic-2.6/patches-2.6.27/180-netfilter_depends.patch
@@ -1,6 +1,6 @@
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -165,7 +165,7 @@ config NF_CONNTRACK_FTP
+@@ -165,7 +165,7 @@
  
  config NF_CONNTRACK_H323
  	tristate "H.323 protocol support"
@@ -9,7 +9,7 @@
  	depends on NETFILTER_ADVANCED
  	help
  	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
-@@ -443,7 +443,7 @@ config NETFILTER_XT_TARGET_CONNSECMARK
+@@ -455,7 +455,7 @@
  
  config NETFILTER_XT_TARGET_TCPMSS
  	tristate '"TCPMSS" target support'
diff --git a/target/linux/generic-2.6/patches-2.6.27/190-netfilter_rtsp.patch b/target/linux/generic-2.6/patches-2.6.27/190-netfilter_rtsp.patch
index 858f60ce39..2b439cdddd 100644
--- a/target/linux/generic-2.6/patches-2.6.27/190-netfilter_rtsp.patch
+++ b/target/linux/generic-2.6/patches-2.6.27/190-netfilter_rtsp.patch
@@ -294,7 +294,7 @@
 +#endif /* _NETFILTER_MIME_H */
 --- a/net/ipv4/netfilter/Makefile
 +++ b/net/ipv4/netfilter/Makefile
-@@ -23,6 +23,7 @@ obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_am
+@@ -23,6 +23,7 @@
  obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
  obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
  obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
@@ -304,7 +304,7 @@
  obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -278,6 +278,16 @@ config NF_CONNTRACK_TFTP
+@@ -278,6 +278,16 @@
  
  	  To compile it as a module, choose M here.  If unsure, say N.
  
@@ -323,7 +323,7 @@
  	depends on NF_CONNTRACK
 --- a/net/netfilter/Makefile
 +++ b/net/netfilter/Makefile
-@@ -33,6 +33,7 @@ obj-$(CONFIG_NF_CONNTRACK_PPTP) += nf_co
+@@ -33,6 +33,7 @@
  obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
  obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
  obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
@@ -333,7 +333,7 @@
  obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
 --- a/net/ipv4/netfilter/Kconfig
 +++ b/net/ipv4/netfilter/Kconfig
-@@ -281,6 +281,11 @@ config NF_NAT_IRC
+@@ -270,6 +270,11 @@
  	depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
  	default NF_NAT && NF_CONNTRACK_IRC
  
diff --git a/target/linux/generic-2.6/patches-2.6.28/150-netfilter_imq.patch b/target/linux/generic-2.6/patches-2.6.28/150-netfilter_imq.patch
index 310d0fc966..415e775a4c 100644
--- a/target/linux/generic-2.6/patches-2.6.28/150-netfilter_imq.patch
+++ b/target/linux/generic-2.6/patches-2.6.28/150-netfilter_imq.patch
@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/drivers/net/imq.c
-@@ -0,0 +1,474 @@
+@@ -0,0 +1,567 @@
 +/*
 + *             Pseudo-driver for the intermediate queue device.
 + *
@@ -51,10 +51,28 @@
 + *
 + *
 + *             2008/06/17 - 2.6.25 - Changed imq.c to use qdisc_run() instead
-+ *	       of qdisc_restart() and moved qdisc_run() to tasklet to avoid
++ *             of qdisc_restart() and moved qdisc_run() to tasklet to avoid
 + *             recursive locking. New initialization routines to fix 'rmmod' not
 + *             working anymore. Used code from ifb.c. (Jussi Kivilinna)
 + *
++ *             2008/08/06 - 2.6.26 - (JK)
++ *              - Replaced tasklet with 'netif_schedule()'.
++ *              - Cleaned up and added comments for imq_nf_queue().
++ *
++ *             2009/04/12
++ *              - Add skb_save_cb/skb_restore_cb helper functions for backuping
++ *                control buffer. This is needed because qdisc-layer on kernels
++ *                2.6.27 and newer overwrite control buffer. (Jussi Kivilinna)
++ *              - Add better locking for IMQ device. Hopefully this will solve
++ *                SMP issues. (Jussi Kivilinna)
++ *              - Port to 2.6.27
++ *              - Port to 2.6.28
++ *
++ *             2009/04/20 - (Jussi Kivilinna)
++ *              - Fix rmmod not working
++ *              - Use netdevice feature flags to avoid extra packet handling
++ *                by core networking layer and possibly increase performance.
++ *
 + *	       Also, many thanks to pablo Sebastian Greco for making the initial
 + *	       patch and to those who helped the testing.
 + *
@@ -64,8 +82,10 @@
 +#include <linux/module.h>
 +#include <linux/kernel.h>
 +#include <linux/moduleparam.h>
++#include <linux/list.h>
 +#include <linux/skbuff.h>
 +#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
 +#include <linux/rtnetlink.h>
 +#include <linux/if_arp.h>
 +#include <linux/netfilter.h>
@@ -77,11 +97,6 @@
 +#include <net/pkt_sched.h>
 +#include <net/netfilter/nf_queue.h>
 +
-+struct imq_private {
-+	struct tasklet_struct tasklet;
-+	unsigned long tasklet_pending;
-+};
-+
 +static nf_hookfn imq_nf_hook;
 +
 +static struct nf_hook_ops imq_ingress_ipv4 = {
@@ -140,8 +155,11 @@
 +static unsigned int numdevs = IMQ_MAX_DEVS;
 +#endif
 +
++static DEFINE_SPINLOCK(imq_nf_queue_lock);
++
 +static struct net_device *imq_devs_cache[IMQ_MAX_DEVS];
 +
++
 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
 +{
 +	return &dev->stats;
@@ -153,12 +171,35 @@
 +	struct nf_queue_entry *entry = skb->nf_queue_entry;
 +
 +	if (entry) {
-+		if (entry->indev)
-+			dev_put(entry->indev);
-+		if (entry->outdev)
-+			dev_put(entry->outdev);
++		nf_queue_entry_release_refs(entry);
++		kfree(entry);
++	}
++
++	skb_restore_cb(skb); /* kfree backup */
++}
++
++static void imq_nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
++{
++	int status;
++
++	if (!entry->next_outfn) {
++		spin_lock_bh(&imq_nf_queue_lock);
++		nf_reinject(entry, verdict);
++		spin_unlock_bh(&imq_nf_queue_lock);
++		return;
++	}
++
++	rcu_read_lock();
++	local_bh_disable();
++	status = entry->next_outfn(entry, entry->next_queuenum);
++	local_bh_enable();
++	if (status < 0) {
++		nf_queue_entry_release_refs(entry);
++		kfree_skb(entry->skb);
 +		kfree(entry);
 +	}
++
++	rcu_read_unlock();
 +}
 +
 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -169,26 +210,35 @@
 +	skb->imq_flags = 0;
 +	skb->destructor = NULL;
 +
++	skb_restore_cb(skb); /* restore skb->cb */
++
 +	dev->trans_start = jiffies;
-+	nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
++	imq_nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
 +	return 0;
 +}
 +
 +static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num)
 +{
 +	struct net_device *dev;
-+	struct imq_private *priv;
-+	struct sk_buff *skb2 = NULL;
++	struct sk_buff *skb_orig, *skb, *skb_shared;
 +	struct Qdisc *q;
-+	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
-+	int ret = -1;
-+
-+	if (index > numdevs)
-+		return -1;
++	struct netdev_queue *txq;
++	int users, index;
++	int retval = -EINVAL;
++
++	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);
++		retval = -EINVAL;
++		goto out;
++	}
 +
 +	/* check for imq device by index from cache */
 +	dev = imq_devs_cache[index];
-+	if (!dev) {
++	if (unlikely(!dev)) {
 +		char buf[8];
 +
 +		/* get device by name and cache result */
@@ -197,49 +247,90 @@
 +		if (!dev) {
 +			/* not found ?!*/
 +			BUG();
-+			return -1;
++			retval = -ENODEV;
++			goto out;
 +		}
 +
 +		imq_devs_cache[index] = dev;
++		dev_put(dev);
 +	}
 +
-+	priv = netdev_priv(dev);
-+	if (!(dev->flags & IFF_UP)) {
++	if (unlikely(!(dev->flags & IFF_UP))) {
 +		entry->skb->imq_flags = 0;
-+		nf_reinject(entry, NF_ACCEPT);
-+		return 0;
++		imq_nf_reinject(entry, NF_ACCEPT);
++		retval = 0;
++		goto out;
 +	}
 +	dev->last_rx = jiffies;
 +
-+	if (entry->skb->destructor) {
-+		skb2 = entry->skb;
-+		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
-+		if (!entry->skb)
-+			return -1;
++	skb = entry->skb;
++	skb_orig = NULL;
++
++	/* skb has owner? => make clone */
++	if (unlikely(skb->destructor)) {
++		skb_orig = skb;
++		skb = skb_clone(skb, GFP_ATOMIC);
++		if (!skb) {
++			retval = -ENOMEM;
++			goto out;
++		}
++		entry->skb = skb;
 +	}
-+	entry->skb->nf_queue_entry = entry;
 +
-+	dev->stats.rx_bytes += entry->skb->len;
++	skb->nf_queue_entry = entry;
++
++	dev->stats.rx_bytes += skb->len;
 +	dev->stats.rx_packets++;
 +
-+	spin_lock_bh(&dev->queue_lock);
-+	q = dev->qdisc;
-+	if (q->enqueue) {
-+		q->enqueue(skb_get(entry->skb), q);
-+		if (skb_shared(entry->skb)) {
-+			entry->skb->destructor = imq_skb_destructor;
-+			kfree_skb(entry->skb);
-+			ret = 0;
-+		}
-+	}
-+	if (!test_and_set_bit(1, &priv->tasklet_pending))
-+		tasklet_schedule(&priv->tasklet);
-+	spin_unlock_bh(&dev->queue_lock);
++	txq = dev_pick_tx(dev, skb);
 +
-+	if (skb2)
-+		kfree_skb(ret ? entry->skb : skb2);
++	q = rcu_dereference(txq->qdisc);
++	if (unlikely(!q->enqueue))
++		goto packet_not_eaten_by_imq_dev;
 +
-+	return ret;
++	spin_lock_bh(qdisc_lock(q));
++
++	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 */
++	qdisc_enqueue_root(skb_shared, q); /* might kfree_skb */
++
++	if (likely(atomic_read(&skb_shared->users) == users + 1)) {
++		kfree_skb(skb_shared); /* decrease reference count by one */
++
++		skb->destructor = &imq_skb_destructor;
++
++		/* cloned? */
++		if (skb_orig)
++			kfree_skb(skb_orig); /* free original */
++
++		spin_unlock_bh(qdisc_lock(q));
++
++		/* schedule qdisc dequeue */
++		__netif_schedule(q);
++
++		retval = 0;
++		goto out;
++	} else {
++		skb_restore_cb(skb_shared); /* restore skb->cb */
++		/* 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. */
++		spin_unlock_bh(qdisc_lock(q));
++		goto packet_not_eaten_by_imq_dev;
++	}
++
++packet_not_eaten_by_imq_dev:
++	/* cloned? restore original */
++	if (skb_orig) {
++		kfree_skb(skb);
++		entry->skb = skb_orig;
++	}
++	retval = -1;
++out:
++	return retval;
 +}
 +
 +static struct nf_queue_handler nfqh = {
@@ -247,17 +338,6 @@
 +	.outfn = imq_nf_queue,
 +};
 +
-+static void qdisc_run_tasklet(unsigned long arg)
-+{
-+	struct net_device *dev = (struct net_device *)arg;
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	spin_lock(&dev->queue_lock);
-+	qdisc_run(dev);
-+	clear_bit(1, &priv->tasklet_pending);
-+	spin_unlock(&dev->queue_lock);
-+}
-+
 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
 +				const struct net_device *indev,
 +				const struct net_device *outdev,
@@ -271,21 +351,13 @@
 +
 +static int imq_close(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_kill(&priv->tasklet);
 +	netif_stop_queue(dev);
-+
 +	return 0;
 +}
 +
 +static int imq_open(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_init(&priv->tasklet, qdisc_run_tasklet, (unsigned long)dev);
 +	netif_start_queue(dev);
-+
 +	return 0;
 +}
 +
@@ -299,59 +371,74 @@
 +	dev->mtu                = 16000;
 +	dev->tx_queue_len       = 11000;
 +	dev->flags              = IFF_NOARP;
++	dev->features           = NETIF_F_SG | NETIF_F_FRAGLIST |
++				  NETIF_F_GSO | NETIF_F_HW_CSUM |
++				  NETIF_F_HIGHDMA;
++}
++
++static int imq_validate(struct nlattr *tb[], struct nlattr *data[])
++{
++	int ret = 0;
++
++	if (tb[IFLA_ADDRESS]) {
++		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
++			ret = -EINVAL;
++			goto end;
++		}
++		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
++			ret = -EADDRNOTAVAIL;
++			goto end;
++		}
++	}
++	return 0;
++end:
++	printk(KERN_WARNING "IMQ: imq_validate failed (%d)\n", ret);
++	return ret;
 +}
 +
 +static struct rtnl_link_ops imq_link_ops __read_mostly = {
 +	.kind		= "imq",
-+	.priv_size	= sizeof(struct imq_private),
++	.priv_size	= 0,
 +	.setup		= imq_setup,
++	.validate	= imq_validate,
 +};
 +
 +static int __init imq_init_hooks(void)
 +{
 +	int err;
 +
-+	err = nf_register_queue_handler(PF_INET, &nfqh);
-+	if (err)
-+		goto err1;
++	nf_register_queue_imq_handler(&nfqh);
 +
 +	err = nf_register_hook(&imq_ingress_ipv4);
 +	if (err)
-+		goto err2;
++		goto err1;
 +
 +	err = nf_register_hook(&imq_egress_ipv4);
 +	if (err)
-+		goto err3;
++		goto err2;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+	err = nf_register_queue_handler(PF_INET6, &nfqh);
-+	if (err)
-+		goto err4;
-+
 +	err = nf_register_hook(&imq_ingress_ipv6);
 +	if (err)
-+		goto err5;
++		goto err3;
 +
 +	err = nf_register_hook(&imq_egress_ipv6);
 +	if (err)
-+		goto err6;
++		goto err4;
 +#endif
 +
 +	return 0;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+err6:
-+	nf_unregister_hook(&imq_ingress_ipv6);
-+err5:
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +err4:
++	nf_unregister_hook(&imq_ingress_ipv6);
++err3:
 +	nf_unregister_hook(&imq_egress_ipv4);
 +#endif
-+err3:
-+	nf_unregister_hook(&imq_ingress_ipv4);
 +err2:
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++	nf_unregister_hook(&imq_ingress_ipv4);
 +err1:
++	nf_unregister_queue_imq_handler();
 +	return err;
 +}
 +
@@ -360,7 +447,7 @@
 +	struct net_device *dev;
 +	int ret;
 +
-+	dev = alloc_netdev(sizeof(struct imq_private), "imq%d", imq_setup);
++	dev = alloc_netdev(0, "imq%d", imq_setup);
 +	if (!dev)
 +		return -ENOMEM;
 +
@@ -383,7 +470,7 @@
 +{
 +	int err, i;
 +
-+	if (!numdevs || numdevs > IMQ_MAX_DEVS) {
++	if (numdevs < 1 || numdevs > IMQ_MAX_DEVS) {
 +		printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
 +		       IMQ_MAX_DEVS);
 +		return -EINVAL;
@@ -408,6 +495,12 @@
 +{
 +	int err;
 +
++#if defined(CONFIG_IMQ_NUM_DEVS)
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS > 16);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS < 2);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS - 1 > IMQ_F_IFMASK);
++#endif
++
 +	err = imq_init_devs();
 +	if (err) {
 +		printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
@@ -443,11 +536,11 @@
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 +	nf_unregister_hook(&imq_ingress_ipv6);
 +	nf_unregister_hook(&imq_egress_ipv6);
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +#endif
 +	nf_unregister_hook(&imq_ingress_ipv4);
 +	nf_unregister_hook(&imq_egress_ipv4);
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++
++	nf_unregister_queue_imq_handler();
 +}
 +
 +static void __exit imq_cleanup_devs(void)
@@ -477,7 +570,7 @@
 +
 --- a/drivers/net/Kconfig
 +++ b/drivers/net/Kconfig
-@@ -109,6 +109,129 @@ config EQUALIZER
+@@ -109,6 +109,129 @@
  	  To compile this driver as a module, choose M here: the module
  	  will be called eql.  If unsure, say N.
  
@@ -609,7 +702,7 @@
  	select CRC32
 --- a/drivers/net/Makefile
 +++ b/drivers/net/Makefile
-@@ -148,6 +148,7 @@ obj-$(CONFIG_SLHC) += slhc.o
+@@ -148,6 +148,7 @@
  obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
  
  obj-$(CONFIG_DUMMY) += dummy.o
@@ -619,52 +712,102 @@
  obj-$(CONFIG_DE600) += de600.o
 --- /dev/null
 +++ b/include/linux/imq.h
-@@ -0,0 +1,9 @@
+@@ -0,0 +1,13 @@
 +#ifndef _IMQ_H
 +#define _IMQ_H
 +
-+#define IMQ_MAX_DEVS   16
++/* IFMASK (16 device indexes, 0 to 15) and flag(s) fit in 5 bits */
++#define IMQ_F_BITS	5
++
++#define IMQ_F_IFMASK	0x0f
++#define IMQ_F_ENQUEUE	0x10
 +
-+#define IMQ_F_IFMASK   0x7f
-+#define IMQ_F_ENQUEUE  0x80
++#define IMQ_MAX_DEVS	(IMQ_F_IFMASK + 1)
 +
 +#endif /* _IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IPT_IMQ_H
 +#define _IPT_IMQ_H
 +
-+struct ipt_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ipt_imq_info xt_imq_info
 +
 +#endif /* _IPT_IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IP6T_IMQ_H
 +#define _IP6T_IMQ_H
 +
-+struct ip6t_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ip6t_imq_info xt_imq_info
 +
 +#endif /* _IP6T_IMQ_H */
++
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -308,6 +308,10 @@ struct sk_buff {
+@@ -28,6 +28,9 @@
+ #include <linux/rcupdate.h>
+ #include <linux/dmaengine.h>
+ #include <linux/hrtimer.h>
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#include <linux/imq.h>
++#endif
+ 
+ #define HAVE_ALLOC_SKB		/* For the drivers to know */
+ #define HAVE_ALIGNABLE_SKB	/* Ditto 8)		   */
+@@ -278,6 +281,9 @@
+ 	 * first. This is owned by whoever has the skb queued ATM.
+ 	 */
+ 	char			cb[48];
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	void			*cb_next;
++#endif
+ 
+ 	unsigned int		len,
+ 				data_len;
+@@ -308,6 +314,9 @@
  	struct nf_conntrack	*nfct;
  	struct sk_buff		*nfct_reasm;
  #endif
 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+	unsigned char			imq_flags;
 +	struct nf_queue_entry	*nf_queue_entry;
 +#endif
  #ifdef CONFIG_BRIDGE_NETFILTER
  	struct nf_bridge_info	*nf_bridge;
  #endif
-@@ -1804,6 +1808,10 @@ static inline void __nf_copy(struct sk_b
+@@ -327,6 +336,9 @@
+ 	__u8			do_not_encrypt:1;
+ #endif
+ 	/* 0/13/14 bit hole */
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	__u8			imq_flags:IMQ_F_BITS;
++#endif
+ 
+ #ifdef CONFIG_NET_DMA
+ 	dma_cookie_t		dma_cookie;
+@@ -367,6 +379,12 @@
+ 			  enum dma_data_direction dir);
+ #endif
+ 
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern int skb_save_cb(struct sk_buff *skb);
++extern int skb_restore_cb(struct sk_buff *skb);
++#endif
++
+ extern void kfree_skb(struct sk_buff *skb);
+ extern void	       __kfree_skb(struct sk_buff *skb);
+ extern struct sk_buff *__alloc_skb(unsigned int size,
+@@ -1804,6 +1822,10 @@
  	dst->nfct_reasm = src->nfct_reasm;
  	nf_conntrack_get_reasm(src->nfct_reasm);
  #endif
@@ -687,7 +830,7 @@
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  #include <linux/stat.h>
-@@ -1655,7 +1658,11 @@ int dev_hard_start_xmit(struct sk_buff *
+@@ -1655,7 +1658,11 @@
  			struct netdev_queue *txq)
  {
  	if (likely(!skb->next)) {
@@ -700,215 +843,414 @@
  			dev_queue_xmit_nit(skb, dev);
  
  		if (netif_needs_gso(dev, skb)) {
+@@ -1746,8 +1753,7 @@
+ 	return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
+ }
+ 
+-static struct netdev_queue *dev_pick_tx(struct net_device *dev,
+-					struct sk_buff *skb)
++struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb)
+ {
+ 	u16 queue_index = 0;
+ 
+@@ -1759,6 +1765,7 @@
+ 	skb_set_queue_mapping(skb, queue_index);
+ 	return netdev_get_tx_queue(dev, queue_index);
+ }
++EXPORT_SYMBOL(dev_pick_tx);
+ 
+ /**
+  *	dev_queue_xmit - transmit a buffer
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -950,6 +950,7 @@
+ extern int		dev_open(struct net_device *dev);
+ extern int		dev_close(struct net_device *dev);
+ extern void		dev_disable_lro(struct net_device *dev);
++extern struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb);
+ extern int		dev_queue_xmit(struct sk_buff *skb);
+ extern int		register_netdevice(struct net_device *dev);
+ extern void		unregister_netdevice(struct net_device *dev);
 --- /dev/null
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -0,0 +1,69 @@
-+/*
-+ * This target marks packets to be enqueued to an imq device
-+ */
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_ipv4/ipt_IMQ.h>
-+#include <linux/imq.h>
++++ b/include/linux/netfilter/xt_IMQ.h
+@@ -0,0 +1,9 @@
++#ifndef _XT_IMQ_H
++#define _XT_IMQ_H
 +
-+static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++struct xt_imq_info {
++	unsigned int todev;     /* target imq device */
++};
++
++#endif /* _XT_IMQ_H */
++
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -13,6 +13,12 @@
+ 	struct net_device	*indev;
+ 	struct net_device	*outdev;
+ 	int			(*okfn)(struct sk_buff *);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	int			(*next_outfn)(struct nf_queue_entry *entry,
++					      unsigned int queuenum);
++	unsigned int		next_queuenum;
++#endif
+ };
+ 
+ #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
+@@ -30,5 +36,11 @@
+ 				       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);
++extern void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern void nf_register_queue_imq_handler(const struct nf_queue_handler *qh);
++extern void nf_unregister_queue_imq_handler(void);
++#endif
+ 
+ #endif /* _NF_QUEUE_H */
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -69,6 +69,9 @@
+ 
+ static 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)
+@@ -88,6 +91,80 @@
+ 	return 1;
+ }
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++/* Control buffer save/restore for IMQ devices */
++struct skb_cb_table {
++	void			*cb_next;
++	atomic_t		refcnt;
++	char      		cb[48];
++};
++
++static DEFINE_SPINLOCK(skb_cb_store_lock);
++
++int skb_save_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	next = kmem_cache_alloc(skbuff_cb_store_cache, GFP_ATOMIC);
++	if (!next)
++		return -ENOMEM;
 +
-+	return XT_CONTINUE;
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(next->cb, skb->cb, sizeof(skb->cb));
++	next->cb_next = skb->cb_next;
++
++	atomic_set(&next->refcnt, 1);
++
++	skb->cb_next = next;
++	return 0;
 +}
++EXPORT_SYMBOL(skb_save_cb);
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *e,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++int skb_restore_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr;
-+
-+	mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	if (mr->todev > IMQ_MAX_DEVS) {
-+		printk(KERN_WARNING
-+		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++	if (!skb->cb_next)
 +		return 0;
++
++	next = skb->cb_next;
++
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(skb->cb, next->cb, sizeof(skb->cb));
++	skb->cb_next = next->cb_next;
++
++	spin_lock(&skb_cb_store_lock);
++
++	if (atomic_dec_and_test(&next->refcnt)) {
++		kmem_cache_free(skbuff_cb_store_cache, next);
 +	}
 +
-+	return 1;
++	spin_unlock(&skb_cb_store_lock);
++
++	return 0;
 +}
++EXPORT_SYMBOL(skb_restore_cb);
 +
-+static struct xt_target ipt_imq_reg = {
-+	.name		= "IMQ",
-+	.family		= AF_INET,
-+	.target		= imq_target,
-+	.targetsize	= sizeof(struct ipt_imq_info),
-+	.checkentry	= imq_checkentry,
-+	.me		= THIS_MODULE,
-+	.table		= "mangle"
-+};
++static void skb_copy_stored_cb(struct sk_buff *new, struct sk_buff *old)
++{
++	struct skb_cb_table *next;
++
++	if (!old->cb_next) {
++		new->cb_next = 0;
++		return;
++	}
++
++	spin_lock(&skb_cb_store_lock);
 +
-+static int __init init(void)
++	next = old->cb_next;
++	atomic_inc(&next->refcnt);
++	new->cb_next = next;
++
++	spin_unlock(&skb_cb_store_lock);
++}
++#endif
+ 
+ /* Pipe buffer operations for a socket. */
+ static struct pipe_buf_operations sock_pipe_buf_ops = {
+@@ -381,6 +458,15 @@
+ 		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. */
++	while(skb->cb_next != NULL) {
++		printk(KERN_WARNING "kfree_skb: skb->cb_next: %08x\n",
++			skb->cb_next);
++		skb_restore_cb(skb);
++	}
++#endif
+ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ 	nf_conntrack_put(skb->nfct);
+ 	nf_conntrack_put_reasm(skb->nfct_reasm);
+@@ -493,6 +579,9 @@
+ 	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);
++#endif
+ 	new->csum_start		= old->csum_start;
+ 	new->csum_offset	= old->csum_offset;
+ 	new->local_df		= old->local_df;
+@@ -2397,6 +2486,13 @@
+ 						0,
+ 						SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+ 						NULL);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	skbuff_cb_store_cache = kmem_cache_create("skbuff_cb_store_cache",
++						  sizeof(struct skb_cb_table),
++						  0,
++						  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
++						  NULL);
++#endif
+ }
+ 
+ /**
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -357,6 +357,18 @@
+ 
+ 	  To compile it as a module, choose M here.  If unsure, say N.
+ 
++config NETFILTER_XT_TARGET_IMQ
++        tristate '"IMQ" target support'
++	depends on NETFILTER_XTABLES
++	depends on IP_NF_MANGLE || IP6_NF_MANGLE
++	select IMQ
++	default m if NETFILTER_ADVANCED=n
++        help
++          This option adds a `IMQ' target which is used to specify if and
++          to which imq device packets should get enqueued/dequeued.
++
++          To compile it as a module, choose M here.  If unsure, say N.
++
+ config NETFILTER_XT_TARGET_MARK
+ 	tristate '"MARK" target support'
+ 	default m if NETFILTER_ADVANCED=n
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -45,6 +45,7 @@
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
++obj-$(CONFIG_NETFILTER_XT_TARGET_IMQ) += xt_IMQ.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG) += xt_NFLOG.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -20,6 +20,26 @@
+ 
+ static DEFINE_MUTEX(queue_handler_mutex);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++static const struct nf_queue_handler *queue_imq_handler;
++
++void nf_register_queue_imq_handler(const struct nf_queue_handler *qh)
 +{
-+	return xt_register_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, qh);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_register_queue_imq_handler);
 +
-+static void __exit fini(void)
++void nf_unregister_queue_imq_handler(void)
 +{
-+	xt_unregister_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, NULL);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_unregister_queue_imq_handler);
++#endif
 +
-+module_init(init);
-+module_exit(fini);
+ /* 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)
+@@ -80,7 +100,7 @@
+ }
+ 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)
+@@ -100,6 +120,7 @@
+ 	/* 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
+@@ -121,12 +142,26 @@
+ #endif
+ 	const struct nf_afinfo *afinfo;
+ 	const struct nf_queue_handler *qh;
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	const struct nf_queue_handler *qih = NULL;
++#endif
+ 
+ 	/* QUEUE == DROP if noone is waiting, to be safe. */
+ 	rcu_read_lock();
+ 
+ 	qh = rcu_dereference(queue_handler[pf]);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
++	if (pf == PF_INET || pf == PF_INET6)
++#else
++	if (pf == PF_INET)
++#endif
++		qih = rcu_dereference(queue_imq_handler);
 +
-+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
-+MODULE_LICENSE("GPL");
---- a/net/ipv4/netfilter/Kconfig
-+++ b/net/ipv4/netfilter/Kconfig
-@@ -112,6 +112,17 @@ config IP_NF_FILTER
++	if (!qh && !qih)
++#else /* !IMQ */
+ 	if (!qh)
++#endif
+ 		goto err_unlock;
  
- 	  To compile it as a module, choose M here.  If unsure, say N.
+ 	afinfo = nf_get_afinfo(pf);
+@@ -145,6 +180,10 @@
+ 		.indev	= indev,
+ 		.outdev	= outdev,
+ 		.okfn	= okfn,
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++		.next_outfn = qh ? qh->outfn : NULL,
++		.next_queuenum = queuenum,
++#endif
+ 	};
+ 
+ 	/* If it's going away, ignore hook. */
+@@ -170,8 +209,19 @@
+ 	}
+ #endif
+ 	afinfo->saveroute(skb, entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	if (qih) {
++		status = qih->outfn(entry, queuenum);
++		goto imq_skip_queue;
++	}
++#endif
++
+ 	status = qh->outfn(entry, queuenum);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++imq_skip_queue:
++#endif
+ 	rcu_read_unlock();
  
-+config IP_NF_TARGET_IMQ
-+       tristate "IMQ target support"
-+       depends on IP_NF_MANGLE && IMQ
-+       help
-+         This option adds a `IMQ' target which is used to specify if and
-+         to which IMQ device packets should get enqueued/dequeued.
-+
-+	 For more information visit: http://www.linuximq.net/
-+
-+         To compile it as a module, choose M here.  If unsure, say N.
-+
- config IP_NF_TARGET_REJECT
- 	tristate "REJECT target support"
- 	depends on IP_NF_FILTER
---- a/net/ipv4/netfilter/Makefile
-+++ b/net/ipv4/netfilter/Makefile
-@@ -58,6 +58,7 @@ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set
- obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
- obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
- obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
-+obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
- obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
- obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
- obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ 	if (status < 0) {
 --- /dev/null
-+++ b/net/ipv6/netfilter/ip6t_IMQ.c
-@@ -0,0 +1,69 @@
++++ b/net/netfilter/xt_IMQ.c
+@@ -0,0 +1,73 @@
 +/*
 + * This target marks packets to be enqueued to an imq device
 + */
 +#include <linux/module.h>
 +#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv6/ip6_tables.h>
-+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_IMQ.h>
 +#include <linux/imq.h>
 +
 +static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++				const struct xt_target_param *par)
 +{
-+	struct ip6t_imq_info *mr = (struct ip6t_imq_info *)targinfo;
++	const struct xt_imq_info *mr = par->targinfo;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	pskb->imq_flags = (mr->todev & IMQ_F_IFMASK) | IMQ_F_ENQUEUE;
 +
 +	return XT_CONTINUE;
 +}
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *entry,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++static bool imq_checkentry(const struct xt_tgchk_param *par)
 +{
-+	struct ip6t_imq_info *mr;
++	struct xt_imq_info *mr = par->targinfo;
 +
-+	mr = (struct ip6t_imq_info *)targinfo;
-+
-+	if (mr->todev > IMQ_MAX_DEVS) {
++	if (mr->todev > IMQ_MAX_DEVS - 1) {
 +		printk(KERN_WARNING
 +		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++		       IMQ_MAX_DEVS - 1);
 +		return 0;
 +	}
 +
 +	return 1;
 +}
 +
-+static struct xt_target ip6t_imq_reg = {
-+	.name           = "IMQ",
-+	.family		= AF_INET6,
-+	.target         = imq_target,
-+	.targetsize	= sizeof(struct ip6t_imq_info),
-+	.table		= "mangle",
-+	.checkentry     = imq_checkentry,
-+	.me             = THIS_MODULE
++static struct xt_target xt_imq_reg[] __read_mostly = {
++	{
++		.name           = "IMQ",
++		.family		= AF_INET,
++		.checkentry     = imq_checkentry,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.me             = THIS_MODULE
++	},
++	{
++		.name           = "IMQ",
++		.family		= AF_INET6,
++		.checkentry     = imq_checkentry,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.me             = THIS_MODULE
++	},
 +};
 +
-+static int __init init(void)
++static int __init imq_init(void)
 +{
-+	return xt_register_target(&ip6t_imq_reg);
++	return xt_register_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+static void __exit fini(void)
++static void __exit imq_fini(void)
 +{
-+	xt_unregister_target(&ip6t_imq_reg);
++	xt_unregister_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+module_init(init);
-+module_exit(fini);
++module_init(imq_init);
++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_LICENSE("GPL");
---- a/net/ipv6/netfilter/Kconfig
-+++ b/net/ipv6/netfilter/Kconfig
-@@ -170,6 +170,15 @@ config IP6_NF_MANGLE
- 
- 	  To compile it as a module, choose M here.  If unsure, say N.
- 
-+config IP6_NF_TARGET_IMQ
-+	tristate "IMQ target support"
-+	depends on IP6_NF_MANGLE && IMQ
-+	help
-+          This option adds a `IMQ' target which is used to specify if and
-+          to which imq device packets should get enqueued/dequeued.
-+
-+          To compile it as a module, choose M here.  If unsure, say N.
++MODULE_ALIAS("ipt_IMQ");
++MODULE_ALIAS("ip6t_IMQ");
 +
- config IP6_NF_TARGET_HL
- 	tristate  'HL (hoplimit) target support'
- 	depends on IP6_NF_MANGLE
---- a/net/ipv6/netfilter/Makefile
-+++ b/net/ipv6/netfilter/Makefile
-@@ -6,6 +6,7 @@
- obj-$(CONFIG_IP6_NF_IPTABLES) += ip6_tables.o
- obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
- obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
-+obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
- obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
- obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
- obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
---- a/net/sched/sch_generic.c
-+++ b/net/sched/sch_generic.c
-@@ -195,6 +195,7 @@ void __qdisc_run(struct Qdisc *q)
- 
- 	clear_bit(__QDISC_STATE_RUNNING, &q->state);
- }
-+EXPORT_SYMBOL(__qdisc_run);
- 
- static void dev_watchdog(unsigned long arg)
- {
diff --git a/target/linux/generic-2.6/patches-2.6.28/151-netfilter_imq_2.6.28.patch b/target/linux/generic-2.6/patches-2.6.28/151-netfilter_imq_2.6.28.patch
deleted file mode 100644
index d4ed15129d..0000000000
--- a/target/linux/generic-2.6/patches-2.6.28/151-netfilter_imq_2.6.28.patch
+++ /dev/null
@@ -1,114 +0,0 @@
---- a/drivers/net/imq.c
-+++ b/drivers/net/imq.c
-@@ -178,10 +178,11 @@ static int imq_nf_queue(struct nf_queue_
- 	struct sk_buff *skb2 = NULL;
- 	struct Qdisc *q;
- 	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
--	int ret = -1;
-+	struct netdev_queue *txq;
-+	int ret = -EINVAL;
- 
- 	if (index > numdevs)
--		return -1;
-+		return ret;
- 
- 	/* check for imq device by index from cache */
- 	dev = imq_devs_cache[index];
-@@ -194,7 +195,7 @@ static int imq_nf_queue(struct nf_queue_
- 		if (!dev) {
- 			/* not found ?!*/
- 			BUG();
--			return -1;
-+			return ret;
- 		}
- 
- 		imq_devs_cache[index] = dev;
-@@ -212,17 +213,19 @@ static int imq_nf_queue(struct nf_queue_
- 		skb2 = entry->skb;
- 		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
- 		if (!entry->skb)
--			return -1;
-+			return -ENOMEM;
- 	}
- 	entry->skb->nf_queue_entry = entry;
- 
- 	dev->stats.rx_bytes += entry->skb->len;
- 	dev->stats.rx_packets++;
- 
--	spin_lock_bh(&dev->queue_lock);
--	q = dev->qdisc;
-+	txq = netdev_get_tx_queue(dev, 0);
-+	__netif_tx_lock_bh(txq);
-+	q = txq->qdisc;
-+
- 	if (q->enqueue) {
--		q->enqueue(skb_get(entry->skb), q);
-+		qdisc_enqueue_root(skb_get(entry->skb), q);
- 		if (skb_shared(entry->skb)) {
- 			entry->skb->destructor = imq_skb_destructor;
- 			kfree_skb(entry->skb);
-@@ -231,7 +234,7 @@ static int imq_nf_queue(struct nf_queue_
- 	}
- 	if (!test_and_set_bit(1, &priv->tasklet_pending))
- 		tasklet_schedule(&priv->tasklet);
--	spin_unlock_bh(&dev->queue_lock);
-+	__netif_tx_unlock_bh(txq);
- 
- 	if (skb2)
- 		kfree_skb(ret ? entry->skb : skb2);
-@@ -248,11 +251,13 @@ static void qdisc_run_tasklet(unsigned l
- {
- 	struct net_device *dev = (struct net_device *)arg;
- 	struct imq_private *priv = netdev_priv(dev);
-+	struct netdev_queue *txq;
- 
--	spin_lock(&dev->queue_lock);
--	qdisc_run(dev);
-+	netif_tx_lock(dev);
-+	txq = netdev_get_tx_queue(dev, 0);
-+	qdisc_run(txq->qdisc);
- 	clear_bit(1, &priv->tasklet_pending);
--	spin_unlock(&dev->queue_lock);
-+	netif_tx_unlock(dev);
- }
- 
- static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
---- a/net/ipv4/netfilter/ipt_IMQ.c
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -7,29 +7,23 @@
- #include <linux/netfilter_ipv4/ipt_IMQ.h>
- #include <linux/imq.h>
- 
--static unsigned int imq_target(struct sk_buff *pskb,
--			       const struct net_device *in,
--			       const struct net_device *out,
--			       unsigned int hooknum,
--			       const struct xt_target *target,
--			       const void *targinfo)
-+static unsigned int
-+imq_target(struct sk_buff *pskb,
-+           const struct xt_target_param *par)
- {
--	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)par->targinfo;
- 
- 	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
- 
- 	return XT_CONTINUE;
- }
- 
--static bool imq_checkentry(const char *tablename,
--			  const void *e,
--			  const struct xt_target *target,
--			  void *targinfo,
--			  unsigned int hook_mask)
-+static bool
-+imq_checkentry(const struct xt_tgchk_param *par)
- {
- 	struct ipt_imq_info *mr;
- 
--	mr = (struct ipt_imq_info *)targinfo;
-+	mr = (struct ipt_imq_info *)par->targinfo;
- 
- 	if (mr->todev > IMQ_MAX_DEVS) {
- 		printk(KERN_WARNING
diff --git a/target/linux/generic-2.6/patches-2.6.28/180-netfilter_depends.patch b/target/linux/generic-2.6/patches-2.6.28/180-netfilter_depends.patch
index 9144417129..b5a2615d24 100644
--- a/target/linux/generic-2.6/patches-2.6.28/180-netfilter_depends.patch
+++ b/target/linux/generic-2.6/patches-2.6.28/180-netfilter_depends.patch
@@ -1,6 +1,6 @@
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -160,7 +160,6 @@ config NF_CONNTRACK_FTP
+@@ -160,7 +160,6 @@
  
  config NF_CONNTRACK_H323
  	tristate "H.323 protocol support"
@@ -8,7 +8,7 @@
  	depends on NETFILTER_ADVANCED
  	help
  	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
-@@ -455,7 +454,6 @@ config NETFILTER_XT_TARGET_SECMARK
+@@ -467,7 +466,6 @@
  
  config NETFILTER_XT_TARGET_TCPMSS
  	tristate '"TCPMSS" target support'
diff --git a/target/linux/generic-2.6/patches-2.6.28/190-netfilter_rtsp.patch b/target/linux/generic-2.6/patches-2.6.28/190-netfilter_rtsp.patch
index 62d4cf2e95..7aff0e6ddc 100644
--- a/target/linux/generic-2.6/patches-2.6.28/190-netfilter_rtsp.patch
+++ b/target/linux/generic-2.6/patches-2.6.28/190-netfilter_rtsp.patch
@@ -294,7 +294,7 @@
 +#endif /* _NETFILTER_MIME_H */
 --- a/net/ipv4/netfilter/Makefile
 +++ b/net/ipv4/netfilter/Makefile
-@@ -26,6 +26,7 @@ obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_am
+@@ -26,6 +26,7 @@
  obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
  obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
  obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
@@ -304,7 +304,7 @@
  obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -267,6 +267,16 @@ config NF_CONNTRACK_TFTP
+@@ -267,6 +267,16 @@
  
  	  To compile it as a module, choose M here.  If unsure, say N.
  
@@ -323,7 +323,7 @@
  	select NETFILTER_NETLINK
 --- a/net/netfilter/Makefile
 +++ b/net/netfilter/Makefile
-@@ -33,6 +33,7 @@ obj-$(CONFIG_NF_CONNTRACK_PPTP) += nf_co
+@@ -33,6 +33,7 @@
  obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
  obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
  obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
@@ -333,7 +333,7 @@
  obj-$(CONFIG_NETFILTER_TPROXY) += nf_tproxy_core.o
 --- a/net/ipv4/netfilter/Kconfig
 +++ b/net/ipv4/netfilter/Kconfig
-@@ -268,6 +268,11 @@ config NF_NAT_IRC
+@@ -257,6 +257,11 @@
  	depends on NF_CONNTRACK && NF_NAT
  	default NF_NAT && NF_CONNTRACK_IRC
  
diff --git a/target/linux/generic-2.6/patches-2.6.28/205-skb_padding.patch b/target/linux/generic-2.6/patches-2.6.28/205-skb_padding.patch
index b47696af87..07e730a206 100644
--- a/target/linux/generic-2.6/patches-2.6.28/205-skb_padding.patch
+++ b/target/linux/generic-2.6/patches-2.6.28/205-skb_padding.patch
@@ -1,6 +1,6 @@
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -1256,9 +1256,12 @@ static inline int skb_network_offset(con
+@@ -1270,9 +1270,12 @@
   *
   * Various parts of the networking layer expect at least 16 bytes of
   * headroom, you should not reduce this.
diff --git a/target/linux/generic-2.6/patches-2.6.29/150-netfilter_imq.patch b/target/linux/generic-2.6/patches-2.6.29/150-netfilter_imq.patch
index cfbd996060..64cf22a017 100644
--- a/target/linux/generic-2.6/patches-2.6.29/150-netfilter_imq.patch
+++ b/target/linux/generic-2.6/patches-2.6.29/150-netfilter_imq.patch
@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/drivers/net/imq.c
-@@ -0,0 +1,474 @@
+@@ -0,0 +1,571 @@
 +/*
 + *             Pseudo-driver for the intermediate queue device.
 + *
@@ -51,10 +51,28 @@
 + *
 + *
 + *             2008/06/17 - 2.6.25 - Changed imq.c to use qdisc_run() instead
-+ *	       of qdisc_restart() and moved qdisc_run() to tasklet to avoid
++ *             of qdisc_restart() and moved qdisc_run() to tasklet to avoid
 + *             recursive locking. New initialization routines to fix 'rmmod' not
 + *             working anymore. Used code from ifb.c. (Jussi Kivilinna)
 + *
++ *             2008/08/06 - 2.6.26 - (JK)
++ *              - Replaced tasklet with 'netif_schedule()'.
++ *              - Cleaned up and added comments for imq_nf_queue().
++ *
++ *             2009/04/12
++ *              - Add skb_save_cb/skb_restore_cb helper functions for backuping
++ *                control buffer. This is needed because qdisc-layer on kernels
++ *                2.6.27 and newer overwrite control buffer. (Jussi Kivilinna)
++ *              - Add better locking for IMQ device. Hopefully this will solve
++ *                SMP issues. (Jussi Kivilinna)
++ *              - Port to 2.6.27
++ *              - Port to 2.6.28
++ *              - Port to 2.6.29 + fix rmmod not working
++ *
++ *             2009/04/20 - (Jussi Kivilinna)
++ *              - Use netdevice feature flags to avoid extra packet handling
++ *                by core networking layer and possibly increase performance.
++ *
 + *	       Also, many thanks to pablo Sebastian Greco for making the initial
 + *	       patch and to those who helped the testing.
 + *
@@ -64,8 +82,10 @@
 +#include <linux/module.h>
 +#include <linux/kernel.h>
 +#include <linux/moduleparam.h>
++#include <linux/list.h>
 +#include <linux/skbuff.h>
 +#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
 +#include <linux/rtnetlink.h>
 +#include <linux/if_arp.h>
 +#include <linux/netfilter.h>
@@ -77,11 +97,6 @@
 +#include <net/pkt_sched.h>
 +#include <net/netfilter/nf_queue.h>
 +
-+struct imq_private {
-+	struct tasklet_struct tasklet;
-+	unsigned long tasklet_pending;
-+};
-+
 +static nf_hookfn imq_nf_hook;
 +
 +static struct nf_hook_ops imq_ingress_ipv4 = {
@@ -140,8 +155,11 @@
 +static unsigned int numdevs = IMQ_MAX_DEVS;
 +#endif
 +
++static DEFINE_SPINLOCK(imq_nf_queue_lock);
++
 +static struct net_device *imq_devs_cache[IMQ_MAX_DEVS];
 +
++
 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
 +{
 +	return &dev->stats;
@@ -153,12 +171,35 @@
 +	struct nf_queue_entry *entry = skb->nf_queue_entry;
 +
 +	if (entry) {
-+		if (entry->indev)
-+			dev_put(entry->indev);
-+		if (entry->outdev)
-+			dev_put(entry->outdev);
++		nf_queue_entry_release_refs(entry);
++		kfree(entry);
++	}
++
++	skb_restore_cb(skb); /* kfree backup */
++}
++
++static void imq_nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
++{
++	int status;
++
++	if (!entry->next_outfn) {
++		spin_lock_bh(&imq_nf_queue_lock);
++		nf_reinject(entry, verdict);
++		spin_unlock_bh(&imq_nf_queue_lock);
++		return;
++	}
++
++	rcu_read_lock();
++	local_bh_disable();
++	status = entry->next_outfn(entry, entry->next_queuenum);
++	local_bh_enable();
++	if (status < 0) {
++		nf_queue_entry_release_refs(entry);
++		kfree_skb(entry->skb);
 +		kfree(entry);
 +	}
++
++	rcu_read_unlock();
 +}
 +
 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -169,26 +210,35 @@
 +	skb->imq_flags = 0;
 +	skb->destructor = NULL;
 +
++	skb_restore_cb(skb); /* restore skb->cb */
++
 +	dev->trans_start = jiffies;
-+	nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
++	imq_nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
 +	return 0;
 +}
 +
 +static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num)
 +{
 +	struct net_device *dev;
-+	struct imq_private *priv;
-+	struct sk_buff *skb2 = NULL;
++	struct sk_buff *skb_orig, *skb, *skb_shared;
 +	struct Qdisc *q;
-+	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
-+	int ret = -1;
-+
-+	if (index > numdevs)
-+		return -1;
++	struct netdev_queue *txq;
++	int users, index;
++	int retval = -EINVAL;
++
++	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);
++		retval = -EINVAL;
++		goto out;
++	}
 +
 +	/* check for imq device by index from cache */
 +	dev = imq_devs_cache[index];
-+	if (!dev) {
++	if (unlikely(!dev)) {
 +		char buf[8];
 +
 +		/* get device by name and cache result */
@@ -197,49 +247,90 @@
 +		if (!dev) {
 +			/* not found ?!*/
 +			BUG();
-+			return -1;
++			retval = -ENODEV;
++			goto out;
 +		}
 +
 +		imq_devs_cache[index] = dev;
++		dev_put(dev);
 +	}
 +
-+	priv = netdev_priv(dev);
-+	if (!(dev->flags & IFF_UP)) {
++	if (unlikely(!(dev->flags & IFF_UP))) {
 +		entry->skb->imq_flags = 0;
-+		nf_reinject(entry, NF_ACCEPT);
-+		return 0;
++		imq_nf_reinject(entry, NF_ACCEPT);
++		retval = 0;
++		goto out;
 +	}
 +	dev->last_rx = jiffies;
 +
-+	if (entry->skb->destructor) {
-+		skb2 = entry->skb;
-+		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
-+		if (!entry->skb)
-+			return -1;
++	skb = entry->skb;
++	skb_orig = NULL;
++
++	/* skb has owner? => make clone */
++	if (unlikely(skb->destructor)) {
++		skb_orig = skb;
++		skb = skb_clone(skb, GFP_ATOMIC);
++		if (!skb) {
++			retval = -ENOMEM;
++			goto out;
++		}
++		entry->skb = skb;
 +	}
-+	entry->skb->nf_queue_entry = entry;
 +
-+	dev->stats.rx_bytes += entry->skb->len;
++	skb->nf_queue_entry = entry;
++
++	dev->stats.rx_bytes += skb->len;
 +	dev->stats.rx_packets++;
 +
-+	spin_lock_bh(&dev->queue_lock);
-+	q = dev->qdisc;
-+	if (q->enqueue) {
-+		q->enqueue(skb_get(entry->skb), q);
-+		if (skb_shared(entry->skb)) {
-+			entry->skb->destructor = imq_skb_destructor;
-+			kfree_skb(entry->skb);
-+			ret = 0;
-+		}
-+	}
-+	if (!test_and_set_bit(1, &priv->tasklet_pending))
-+		tasklet_schedule(&priv->tasklet);
-+	spin_unlock_bh(&dev->queue_lock);
++	txq = dev_pick_tx(dev, skb);
 +
-+	if (skb2)
-+		kfree_skb(ret ? entry->skb : skb2);
++	q = rcu_dereference(txq->qdisc);
++	if (unlikely(!q->enqueue))
++		goto packet_not_eaten_by_imq_dev;
 +
-+	return ret;
++	spin_lock_bh(qdisc_lock(q));
++
++	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 */
++	qdisc_enqueue_root(skb_shared, q); /* might kfree_skb */
++
++	if (likely(atomic_read(&skb_shared->users) == users + 1)) {
++		kfree_skb(skb_shared); /* decrease reference count by one */
++
++		skb->destructor = &imq_skb_destructor;
++
++		/* cloned? */
++		if (skb_orig)
++			kfree_skb(skb_orig); /* free original */
++
++		spin_unlock_bh(qdisc_lock(q));
++
++		/* schedule qdisc dequeue */
++		__netif_schedule(q);
++
++		retval = 0;
++		goto out;
++	} else {
++		skb_restore_cb(skb_shared); /* restore skb->cb */
++		/* 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. */
++		spin_unlock_bh(qdisc_lock(q));
++		goto packet_not_eaten_by_imq_dev;
++	}
++
++packet_not_eaten_by_imq_dev:
++	/* cloned? restore original */
++	if (skb_orig) {
++		kfree_skb(skb);
++		entry->skb = skb_orig;
++	}
++	retval = -1;
++out:
++	return retval;
 +}
 +
 +static struct nf_queue_handler nfqh = {
@@ -247,17 +338,6 @@
 +	.outfn = imq_nf_queue,
 +};
 +
-+static void qdisc_run_tasklet(unsigned long arg)
-+{
-+	struct net_device *dev = (struct net_device *)arg;
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	spin_lock(&dev->queue_lock);
-+	qdisc_run(dev);
-+	clear_bit(1, &priv->tasklet_pending);
-+	spin_unlock(&dev->queue_lock);
-+}
-+
 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
 +				const struct net_device *indev,
 +				const struct net_device *outdev,
@@ -271,87 +351,98 @@
 +
 +static int imq_close(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_kill(&priv->tasklet);
 +	netif_stop_queue(dev);
-+
 +	return 0;
 +}
 +
 +static int imq_open(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_init(&priv->tasklet, qdisc_run_tasklet, (unsigned long)dev);
 +	netif_start_queue(dev);
-+
 +	return 0;
 +}
 +
++static const struct net_device_ops imq_netdev_ops = {
++	.ndo_open		= imq_open,
++	.ndo_stop		= imq_close,
++	.ndo_start_xmit		= imq_dev_xmit,
++	.ndo_get_stats		= imq_get_stats,
++};
++
 +static void imq_setup(struct net_device *dev)
 +{
-+	dev->hard_start_xmit    = imq_dev_xmit;
-+	dev->open		= imq_open;
-+	dev->get_stats		= imq_get_stats;
-+	dev->stop		= imq_close;
++	dev->netdev_ops		= &imq_netdev_ops;
 +	dev->type               = ARPHRD_VOID;
 +	dev->mtu                = 16000;
 +	dev->tx_queue_len       = 11000;
 +	dev->flags              = IFF_NOARP;
++	dev->features           = NETIF_F_SG | NETIF_F_FRAGLIST |
++				  NETIF_F_GSO | NETIF_F_HW_CSUM |
++				  NETIF_F_HIGHDMA;
++}
++
++static int imq_validate(struct nlattr *tb[], struct nlattr *data[])
++{
++	int ret = 0;
++
++	if (tb[IFLA_ADDRESS]) {
++		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
++			ret = -EINVAL;
++			goto end;
++		}
++		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
++			ret = -EADDRNOTAVAIL;
++			goto end;
++		}
++	}
++	return 0;
++end:
++	printk(KERN_WARNING "IMQ: imq_validate failed (%d)\n", ret);
++	return ret;
 +}
 +
 +static struct rtnl_link_ops imq_link_ops __read_mostly = {
 +	.kind		= "imq",
-+	.priv_size	= sizeof(struct imq_private),
++	.priv_size	= 0,
 +	.setup		= imq_setup,
++	.validate	= imq_validate,
 +};
 +
 +static int __init imq_init_hooks(void)
 +{
 +	int err;
 +
-+	err = nf_register_queue_handler(PF_INET, &nfqh);
-+	if (err)
-+		goto err1;
++	nf_register_queue_imq_handler(&nfqh);
 +
 +	err = nf_register_hook(&imq_ingress_ipv4);
 +	if (err)
-+		goto err2;
++		goto err1;
 +
 +	err = nf_register_hook(&imq_egress_ipv4);
 +	if (err)
-+		goto err3;
++		goto err2;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+	err = nf_register_queue_handler(PF_INET6, &nfqh);
-+	if (err)
-+		goto err4;
-+
 +	err = nf_register_hook(&imq_ingress_ipv6);
 +	if (err)
-+		goto err5;
++		goto err3;
 +
 +	err = nf_register_hook(&imq_egress_ipv6);
 +	if (err)
-+		goto err6;
++		goto err4;
 +#endif
 +
 +	return 0;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+err6:
-+	nf_unregister_hook(&imq_ingress_ipv6);
-+err5:
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +err4:
++	nf_unregister_hook(&imq_ingress_ipv6);
++err3:
 +	nf_unregister_hook(&imq_egress_ipv4);
 +#endif
-+err3:
-+	nf_unregister_hook(&imq_ingress_ipv4);
 +err2:
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++	nf_unregister_hook(&imq_ingress_ipv4);
 +err1:
++	nf_unregister_queue_imq_handler();
 +	return err;
 +}
 +
@@ -360,7 +451,7 @@
 +	struct net_device *dev;
 +	int ret;
 +
-+	dev = alloc_netdev(sizeof(struct imq_private), "imq%d", imq_setup);
++	dev = alloc_netdev(0, "imq%d", imq_setup);
 +	if (!dev)
 +		return -ENOMEM;
 +
@@ -383,7 +474,7 @@
 +{
 +	int err, i;
 +
-+	if (!numdevs || numdevs > IMQ_MAX_DEVS) {
++	if (numdevs < 1 || numdevs > IMQ_MAX_DEVS) {
 +		printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
 +		       IMQ_MAX_DEVS);
 +		return -EINVAL;
@@ -408,6 +499,12 @@
 +{
 +	int err;
 +
++#if defined(CONFIG_IMQ_NUM_DEVS)
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS > 16);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS < 2);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS - 1 > IMQ_F_IFMASK);
++#endif
++
 +	err = imq_init_devs();
 +	if (err) {
 +		printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
@@ -443,11 +540,11 @@
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 +	nf_unregister_hook(&imq_ingress_ipv6);
 +	nf_unregister_hook(&imq_egress_ipv6);
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +#endif
 +	nf_unregister_hook(&imq_ingress_ipv4);
 +	nf_unregister_hook(&imq_egress_ipv4);
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++
++	nf_unregister_queue_imq_handler();
 +}
 +
 +static void __exit imq_cleanup_devs(void)
@@ -477,7 +574,7 @@
 +
 --- a/drivers/net/Kconfig
 +++ b/drivers/net/Kconfig
-@@ -110,6 +110,129 @@ config EQUALIZER
+@@ -110,6 +110,129 @@
  	  To compile this driver as a module, choose M here: the module
  	  will be called eql.  If unsure, say N.
  
@@ -609,7 +706,7 @@
  	select CRC32
 --- a/drivers/net/Makefile
 +++ b/drivers/net/Makefile
-@@ -150,6 +150,7 @@ obj-$(CONFIG_SLHC) += slhc.o
+@@ -150,6 +150,7 @@
  obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
  
  obj-$(CONFIG_DUMMY) += dummy.o
@@ -619,52 +716,102 @@
  obj-$(CONFIG_DE600) += de600.o
 --- /dev/null
 +++ b/include/linux/imq.h
-@@ -0,0 +1,9 @@
+@@ -0,0 +1,13 @@
 +#ifndef _IMQ_H
 +#define _IMQ_H
 +
-+#define IMQ_MAX_DEVS   16
++/* IFMASK (16 device indexes, 0 to 15) and flag(s) fit in 5 bits */
++#define IMQ_F_BITS	5
++
++#define IMQ_F_IFMASK	0x0f
++#define IMQ_F_ENQUEUE	0x10
 +
-+#define IMQ_F_IFMASK   0x7f
-+#define IMQ_F_ENQUEUE  0x80
++#define IMQ_MAX_DEVS	(IMQ_F_IFMASK + 1)
 +
 +#endif /* _IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IPT_IMQ_H
 +#define _IPT_IMQ_H
 +
-+struct ipt_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ipt_imq_info xt_imq_info
 +
 +#endif /* _IPT_IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IP6T_IMQ_H
 +#define _IP6T_IMQ_H
 +
-+struct ip6t_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ip6t_imq_info xt_imq_info
 +
 +#endif /* _IP6T_IMQ_H */
++
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -312,6 +312,10 @@ struct sk_buff {
+@@ -28,6 +28,9 @@
+ #include <linux/rcupdate.h>
+ #include <linux/dmaengine.h>
+ #include <linux/hrtimer.h>
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#include <linux/imq.h>
++#endif
+ 
+ #define HAVE_ALLOC_SKB		/* For the drivers to know */
+ #define HAVE_ALIGNABLE_SKB	/* Ditto 8)		   */
+@@ -282,6 +285,9 @@
+ 	 * first. This is owned by whoever has the skb queued ATM.
+ 	 */
+ 	char			cb[48];
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	void			*cb_next;
++#endif
+ 
+ 	unsigned int		len,
+ 				data_len;
+@@ -312,6 +318,9 @@
  	struct nf_conntrack	*nfct;
  	struct sk_buff		*nfct_reasm;
  #endif
 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+	unsigned char			imq_flags;
 +	struct nf_queue_entry	*nf_queue_entry;
 +#endif
  #ifdef CONFIG_BRIDGE_NETFILTER
  	struct nf_bridge_info	*nf_bridge;
  #endif
-@@ -1844,6 +1848,10 @@ static inline void __nf_copy(struct sk_b
+@@ -332,6 +341,9 @@
+ 	__u8			requeue:1;
+ #endif
+ 	/* 0/13/14 bit hole */
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	__u8			imq_flags:IMQ_F_BITS;
++#endif
+ 
+ #ifdef CONFIG_NET_DMA
+ 	dma_cookie_t		dma_cookie;
+@@ -372,6 +384,12 @@
+ 			  enum dma_data_direction dir);
+ #endif
+ 
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern int skb_save_cb(struct sk_buff *skb);
++extern int skb_restore_cb(struct sk_buff *skb);
++#endif
++
+ extern void kfree_skb(struct sk_buff *skb);
+ extern void	       __kfree_skb(struct sk_buff *skb);
+ extern struct sk_buff *__alloc_skb(unsigned int size,
+@@ -1844,6 +1862,10 @@
  	dst->nfct_reasm = src->nfct_reasm;
  	nf_conntrack_get_reasm(src->nfct_reasm);
  #endif
@@ -687,7 +834,7 @@
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  #include <linux/stat.h>
-@@ -1671,7 +1674,11 @@ int dev_hard_start_xmit(struct sk_buff *
+@@ -1671,7 +1674,11 @@
  
  	prefetch(&dev->netdev_ops->ndo_start_xmit);
  	if (likely(!skb->next)) {
@@ -700,215 +847,414 @@
  			dev_queue_xmit_nit(skb, dev);
  
  		if (netif_needs_gso(dev, skb)) {
+@@ -1762,8 +1769,7 @@
+ 	return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
+ }
+ 
+-static struct netdev_queue *dev_pick_tx(struct net_device *dev,
+-					struct sk_buff *skb)
++struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb)
+ {
+ 	const struct net_device_ops *ops = dev->netdev_ops;
+ 	u16 queue_index = 0;
+@@ -1776,6 +1782,7 @@
+ 	skb_set_queue_mapping(skb, queue_index);
+ 	return netdev_get_tx_queue(dev, queue_index);
+ }
++EXPORT_SYMBOL(dev_pick_tx);
+ 
+ /**
+  *	dev_queue_xmit - transmit a buffer
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1071,6 +1071,7 @@
+ extern int		dev_open(struct net_device *dev);
+ extern int		dev_close(struct net_device *dev);
+ extern void		dev_disable_lro(struct net_device *dev);
++extern struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb);
+ extern int		dev_queue_xmit(struct sk_buff *skb);
+ extern int		register_netdevice(struct net_device *dev);
+ extern void		unregister_netdevice(struct net_device *dev);
 --- /dev/null
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -0,0 +1,69 @@
-+/*
-+ * This target marks packets to be enqueued to an imq device
-+ */
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_ipv4/ipt_IMQ.h>
-+#include <linux/imq.h>
++++ b/include/linux/netfilter/xt_IMQ.h
+@@ -0,0 +1,9 @@
++#ifndef _XT_IMQ_H
++#define _XT_IMQ_H
 +
-+static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++struct xt_imq_info {
++	unsigned int todev;     /* target imq device */
++};
++
++#endif /* _XT_IMQ_H */
++
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -13,6 +13,12 @@
+ 	struct net_device	*indev;
+ 	struct net_device	*outdev;
+ 	int			(*okfn)(struct sk_buff *);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	int			(*next_outfn)(struct nf_queue_entry *entry,
++					      unsigned int queuenum);
++	unsigned int		next_queuenum;
++#endif
+ };
+ 
+ #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
+@@ -30,5 +36,11 @@
+ 				       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);
++extern void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern void nf_register_queue_imq_handler(const struct nf_queue_handler *qh);
++extern void nf_unregister_queue_imq_handler(void);
++#endif
+ 
+ #endif /* _NF_QUEUE_H */
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -69,6 +69,9 @@
+ 
+ static 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)
+@@ -88,6 +91,80 @@
+ 	return 1;
+ }
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++/* Control buffer save/restore for IMQ devices */
++struct skb_cb_table {
++	void			*cb_next;
++	atomic_t		refcnt;
++	char      		cb[48];
++};
++
++static DEFINE_SPINLOCK(skb_cb_store_lock);
++
++int skb_save_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	next = kmem_cache_alloc(skbuff_cb_store_cache, GFP_ATOMIC);
++	if (!next)
++		return -ENOMEM;
 +
-+	return XT_CONTINUE;
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(next->cb, skb->cb, sizeof(skb->cb));
++	next->cb_next = skb->cb_next;
++
++	atomic_set(&next->refcnt, 1);
++
++	skb->cb_next = next;
++	return 0;
 +}
++EXPORT_SYMBOL(skb_save_cb);
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *e,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++int skb_restore_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr;
-+
-+	mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	if (mr->todev > IMQ_MAX_DEVS) {
-+		printk(KERN_WARNING
-+		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++	if (!skb->cb_next)
 +		return 0;
++
++	next = skb->cb_next;
++
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(skb->cb, next->cb, sizeof(skb->cb));
++	skb->cb_next = next->cb_next;
++
++	spin_lock(&skb_cb_store_lock);
++
++	if (atomic_dec_and_test(&next->refcnt)) {
++		kmem_cache_free(skbuff_cb_store_cache, next);
 +	}
 +
-+	return 1;
++	spin_unlock(&skb_cb_store_lock);
++
++	return 0;
 +}
++EXPORT_SYMBOL(skb_restore_cb);
 +
-+static struct xt_target ipt_imq_reg = {
-+	.name		= "IMQ",
-+	.family		= AF_INET,
-+	.target		= imq_target,
-+	.targetsize	= sizeof(struct ipt_imq_info),
-+	.checkentry	= imq_checkentry,
-+	.me		= THIS_MODULE,
-+	.table		= "mangle"
-+};
++static void skb_copy_stored_cb(struct sk_buff *new, struct sk_buff *old)
++{
++	struct skb_cb_table *next;
++
++	if (!old->cb_next) {
++		new->cb_next = 0;
++		return;
++	}
++
++	spin_lock(&skb_cb_store_lock);
++
++	next = old->cb_next;
++	atomic_inc(&next->refcnt);
++	new->cb_next = next;
++
++	spin_unlock(&skb_cb_store_lock);
++}
++#endif
+ 
+ /* Pipe buffer operations for a socket. */
+ static struct pipe_buf_operations sock_pipe_buf_ops = {
+@@ -381,6 +458,15 @@
+ 		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. */
++	while(skb->cb_next != NULL) {
++		printk(KERN_WARNING "kfree_skb: skb->cb_next: %08x\n",
++			skb->cb_next);
++		skb_restore_cb(skb);
++	}
++#endif
+ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ 	nf_conntrack_put(skb->nfct);
+ 	nf_conntrack_put_reasm(skb->nfct_reasm);
+@@ -493,6 +579,9 @@
+ 	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);
++#endif
+ 	new->csum_start		= old->csum_start;
+ 	new->csum_offset	= old->csum_offset;
+ 	new->local_df		= old->local_df;
+@@ -2664,6 +2753,13 @@
+ 						0,
+ 						SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+ 						NULL);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	skbuff_cb_store_cache = kmem_cache_create("skbuff_cb_store_cache",
++						  sizeof(struct skb_cb_table),
++						  0,
++						  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
++						  NULL);
++#endif
+ }
+ 
+ /**
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -357,6 +357,18 @@
+ 
+ 	  To compile it as a module, choose M here.  If unsure, say N.
+ 
++config NETFILTER_XT_TARGET_IMQ
++        tristate '"IMQ" target support'
++	depends on NETFILTER_XTABLES
++	depends on IP_NF_MANGLE || IP6_NF_MANGLE
++	select IMQ
++	default m if NETFILTER_ADVANCED=n
++        help
++          This option adds a `IMQ' target which is used to specify if and
++          to which imq device packets should get enqueued/dequeued.
 +
-+static int __init init(void)
++          To compile it as a module, choose M here.  If unsure, say N.
++
+ config NETFILTER_XT_TARGET_MARK
+ 	tristate '"MARK" target support'
+ 	default m if NETFILTER_ADVANCED=n
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -45,6 +45,7 @@
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
++obj-$(CONFIG_NETFILTER_XT_TARGET_IMQ) += xt_IMQ.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG) += xt_NFLOG.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -20,6 +20,26 @@
+ 
+ static DEFINE_MUTEX(queue_handler_mutex);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++static const struct nf_queue_handler *queue_imq_handler;
++
++void nf_register_queue_imq_handler(const struct nf_queue_handler *qh)
 +{
-+	return xt_register_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, qh);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_register_queue_imq_handler);
 +
-+static void __exit fini(void)
++void nf_unregister_queue_imq_handler(void)
 +{
-+	xt_unregister_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, NULL);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_unregister_queue_imq_handler);
++#endif
 +
-+module_init(init);
-+module_exit(fini);
+ /* 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)
+@@ -80,7 +100,7 @@
+ }
+ 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)
+@@ -100,6 +120,7 @@
+ 	/* 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
+@@ -121,12 +142,26 @@
+ #endif
+ 	const struct nf_afinfo *afinfo;
+ 	const struct nf_queue_handler *qh;
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	const struct nf_queue_handler *qih = NULL;
++#endif
+ 
+ 	/* QUEUE == DROP if noone is waiting, to be safe. */
+ 	rcu_read_lock();
+ 
+ 	qh = rcu_dereference(queue_handler[pf]);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
++	if (pf == PF_INET || pf == PF_INET6)
++#else
++	if (pf == PF_INET)
++#endif
++		qih = rcu_dereference(queue_imq_handler);
 +
-+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
-+MODULE_LICENSE("GPL");
---- a/net/ipv4/netfilter/Kconfig
-+++ b/net/ipv4/netfilter/Kconfig
-@@ -112,6 +112,17 @@ config IP_NF_FILTER
++	if (!qh && !qih)
++#else /* !IMQ */
+ 	if (!qh)
++#endif
+ 		goto err_unlock;
  
- 	  To compile it as a module, choose M here.  If unsure, say N.
+ 	afinfo = nf_get_afinfo(pf);
+@@ -145,6 +180,10 @@
+ 		.indev	= indev,
+ 		.outdev	= outdev,
+ 		.okfn	= okfn,
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++		.next_outfn = qh ? qh->outfn : NULL,
++		.next_queuenum = queuenum,
++#endif
+ 	};
+ 
+ 	/* If it's going away, ignore hook. */
+@@ -170,8 +209,19 @@
+ 	}
+ #endif
+ 	afinfo->saveroute(skb, entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	if (qih) {
++		status = qih->outfn(entry, queuenum);
++		goto imq_skip_queue;
++	}
++#endif
++
+ 	status = qh->outfn(entry, queuenum);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++imq_skip_queue:
++#endif
+ 	rcu_read_unlock();
  
-+config IP_NF_TARGET_IMQ
-+       tristate "IMQ target support"
-+       depends on IP_NF_MANGLE && IMQ
-+       help
-+         This option adds a `IMQ' target which is used to specify if and
-+         to which IMQ device packets should get enqueued/dequeued.
-+
-+	 For more information visit: http://www.linuximq.net/
-+
-+         To compile it as a module, choose M here.  If unsure, say N.
-+
- config IP_NF_TARGET_REJECT
- 	tristate "REJECT target support"
- 	depends on IP_NF_FILTER
---- a/net/ipv4/netfilter/Makefile
-+++ b/net/ipv4/netfilter/Makefile
-@@ -58,6 +58,7 @@ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set
- obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
- obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
- obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
-+obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
- obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
- obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
- obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ 	if (status < 0) {
 --- /dev/null
-+++ b/net/ipv6/netfilter/ip6t_IMQ.c
-@@ -0,0 +1,69 @@
++++ b/net/netfilter/xt_IMQ.c
+@@ -0,0 +1,73 @@
 +/*
 + * This target marks packets to be enqueued to an imq device
 + */
 +#include <linux/module.h>
 +#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv6/ip6_tables.h>
-+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_IMQ.h>
 +#include <linux/imq.h>
 +
 +static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++				const struct xt_target_param *par)
 +{
-+	struct ip6t_imq_info *mr = (struct ip6t_imq_info *)targinfo;
++	const struct xt_imq_info *mr = par->targinfo;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	pskb->imq_flags = (mr->todev & IMQ_F_IFMASK) | IMQ_F_ENQUEUE;
 +
 +	return XT_CONTINUE;
 +}
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *entry,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++static bool imq_checkentry(const struct xt_tgchk_param *par)
 +{
-+	struct ip6t_imq_info *mr;
++	struct xt_imq_info *mr = par->targinfo;
 +
-+	mr = (struct ip6t_imq_info *)targinfo;
-+
-+	if (mr->todev > IMQ_MAX_DEVS) {
++	if (mr->todev > IMQ_MAX_DEVS - 1) {
 +		printk(KERN_WARNING
 +		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++		       IMQ_MAX_DEVS - 1);
 +		return 0;
 +	}
 +
 +	return 1;
 +}
 +
-+static struct xt_target ip6t_imq_reg = {
-+	.name           = "IMQ",
-+	.family		= AF_INET6,
-+	.target         = imq_target,
-+	.targetsize	= sizeof(struct ip6t_imq_info),
-+	.table		= "mangle",
-+	.checkentry     = imq_checkentry,
-+	.me             = THIS_MODULE
++static struct xt_target xt_imq_reg[] __read_mostly = {
++	{
++		.name           = "IMQ",
++		.family		= AF_INET,
++		.checkentry     = imq_checkentry,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.me             = THIS_MODULE
++	},
++	{
++		.name           = "IMQ",
++		.family		= AF_INET6,
++		.checkentry     = imq_checkentry,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.me             = THIS_MODULE
++	},
 +};
 +
-+static int __init init(void)
++static int __init imq_init(void)
 +{
-+	return xt_register_target(&ip6t_imq_reg);
++	return xt_register_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+static void __exit fini(void)
++static void __exit imq_fini(void)
 +{
-+	xt_unregister_target(&ip6t_imq_reg);
++	xt_unregister_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+module_init(init);
-+module_exit(fini);
++module_init(imq_init);
++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_LICENSE("GPL");
---- a/net/ipv6/netfilter/Kconfig
-+++ b/net/ipv6/netfilter/Kconfig
-@@ -170,6 +170,15 @@ config IP6_NF_MANGLE
- 
- 	  To compile it as a module, choose M here.  If unsure, say N.
- 
-+config IP6_NF_TARGET_IMQ
-+	tristate "IMQ target support"
-+	depends on IP6_NF_MANGLE && IMQ
-+	help
-+          This option adds a `IMQ' target which is used to specify if and
-+          to which imq device packets should get enqueued/dequeued.
-+
-+          To compile it as a module, choose M here.  If unsure, say N.
++MODULE_ALIAS("ipt_IMQ");
++MODULE_ALIAS("ip6t_IMQ");
 +
- config IP6_NF_TARGET_HL
- 	tristate  'HL (hoplimit) target support'
- 	depends on IP6_NF_MANGLE
---- a/net/ipv6/netfilter/Makefile
-+++ b/net/ipv6/netfilter/Makefile
-@@ -6,6 +6,7 @@
- obj-$(CONFIG_IP6_NF_IPTABLES) += ip6_tables.o
- obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
- obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
-+obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
- obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
- obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
- obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
---- a/net/sched/sch_generic.c
-+++ b/net/sched/sch_generic.c
-@@ -195,6 +195,7 @@ void __qdisc_run(struct Qdisc *q)
- 
- 	clear_bit(__QDISC_STATE_RUNNING, &q->state);
- }
-+EXPORT_SYMBOL(__qdisc_run);
- 
- static void dev_watchdog(unsigned long arg)
- {
diff --git a/target/linux/generic-2.6/patches-2.6.29/151-netfilter_imq_2.6.28.patch b/target/linux/generic-2.6/patches-2.6.29/151-netfilter_imq_2.6.28.patch
deleted file mode 100644
index d4ed15129d..0000000000
--- a/target/linux/generic-2.6/patches-2.6.29/151-netfilter_imq_2.6.28.patch
+++ /dev/null
@@ -1,114 +0,0 @@
---- a/drivers/net/imq.c
-+++ b/drivers/net/imq.c
-@@ -178,10 +178,11 @@ static int imq_nf_queue(struct nf_queue_
- 	struct sk_buff *skb2 = NULL;
- 	struct Qdisc *q;
- 	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
--	int ret = -1;
-+	struct netdev_queue *txq;
-+	int ret = -EINVAL;
- 
- 	if (index > numdevs)
--		return -1;
-+		return ret;
- 
- 	/* check for imq device by index from cache */
- 	dev = imq_devs_cache[index];
-@@ -194,7 +195,7 @@ static int imq_nf_queue(struct nf_queue_
- 		if (!dev) {
- 			/* not found ?!*/
- 			BUG();
--			return -1;
-+			return ret;
- 		}
- 
- 		imq_devs_cache[index] = dev;
-@@ -212,17 +213,19 @@ static int imq_nf_queue(struct nf_queue_
- 		skb2 = entry->skb;
- 		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
- 		if (!entry->skb)
--			return -1;
-+			return -ENOMEM;
- 	}
- 	entry->skb->nf_queue_entry = entry;
- 
- 	dev->stats.rx_bytes += entry->skb->len;
- 	dev->stats.rx_packets++;
- 
--	spin_lock_bh(&dev->queue_lock);
--	q = dev->qdisc;
-+	txq = netdev_get_tx_queue(dev, 0);
-+	__netif_tx_lock_bh(txq);
-+	q = txq->qdisc;
-+
- 	if (q->enqueue) {
--		q->enqueue(skb_get(entry->skb), q);
-+		qdisc_enqueue_root(skb_get(entry->skb), q);
- 		if (skb_shared(entry->skb)) {
- 			entry->skb->destructor = imq_skb_destructor;
- 			kfree_skb(entry->skb);
-@@ -231,7 +234,7 @@ static int imq_nf_queue(struct nf_queue_
- 	}
- 	if (!test_and_set_bit(1, &priv->tasklet_pending))
- 		tasklet_schedule(&priv->tasklet);
--	spin_unlock_bh(&dev->queue_lock);
-+	__netif_tx_unlock_bh(txq);
- 
- 	if (skb2)
- 		kfree_skb(ret ? entry->skb : skb2);
-@@ -248,11 +251,13 @@ static void qdisc_run_tasklet(unsigned l
- {
- 	struct net_device *dev = (struct net_device *)arg;
- 	struct imq_private *priv = netdev_priv(dev);
-+	struct netdev_queue *txq;
- 
--	spin_lock(&dev->queue_lock);
--	qdisc_run(dev);
-+	netif_tx_lock(dev);
-+	txq = netdev_get_tx_queue(dev, 0);
-+	qdisc_run(txq->qdisc);
- 	clear_bit(1, &priv->tasklet_pending);
--	spin_unlock(&dev->queue_lock);
-+	netif_tx_unlock(dev);
- }
- 
- static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
---- a/net/ipv4/netfilter/ipt_IMQ.c
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -7,29 +7,23 @@
- #include <linux/netfilter_ipv4/ipt_IMQ.h>
- #include <linux/imq.h>
- 
--static unsigned int imq_target(struct sk_buff *pskb,
--			       const struct net_device *in,
--			       const struct net_device *out,
--			       unsigned int hooknum,
--			       const struct xt_target *target,
--			       const void *targinfo)
-+static unsigned int
-+imq_target(struct sk_buff *pskb,
-+           const struct xt_target_param *par)
- {
--	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)par->targinfo;
- 
- 	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
- 
- 	return XT_CONTINUE;
- }
- 
--static bool imq_checkentry(const char *tablename,
--			  const void *e,
--			  const struct xt_target *target,
--			  void *targinfo,
--			  unsigned int hook_mask)
-+static bool
-+imq_checkentry(const struct xt_tgchk_param *par)
- {
- 	struct ipt_imq_info *mr;
- 
--	mr = (struct ipt_imq_info *)targinfo;
-+	mr = (struct ipt_imq_info *)par->targinfo;
- 
- 	if (mr->todev > IMQ_MAX_DEVS) {
- 		printk(KERN_WARNING
diff --git a/target/linux/generic-2.6/patches-2.6.29/180-netfilter_depends.patch b/target/linux/generic-2.6/patches-2.6.29/180-netfilter_depends.patch
index cf402f53dc..3694709ed1 100644
--- a/target/linux/generic-2.6/patches-2.6.29/180-netfilter_depends.patch
+++ b/target/linux/generic-2.6/patches-2.6.29/180-netfilter_depends.patch
@@ -1,6 +1,6 @@
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -160,7 +160,6 @@ config NF_CONNTRACK_FTP
+@@ -160,7 +160,6 @@
  
  config NF_CONNTRACK_H323
  	tristate "H.323 protocol support"
@@ -8,7 +8,7 @@
  	depends on NETFILTER_ADVANCED
  	help
  	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
-@@ -454,7 +453,6 @@ config NETFILTER_XT_TARGET_SECMARK
+@@ -466,7 +465,6 @@
  
  config NETFILTER_XT_TARGET_TCPMSS
  	tristate '"TCPMSS" target support'
diff --git a/target/linux/generic-2.6/patches-2.6.29/190-netfilter_rtsp.patch b/target/linux/generic-2.6/patches-2.6.29/190-netfilter_rtsp.patch
index 62d4cf2e95..7aff0e6ddc 100644
--- a/target/linux/generic-2.6/patches-2.6.29/190-netfilter_rtsp.patch
+++ b/target/linux/generic-2.6/patches-2.6.29/190-netfilter_rtsp.patch
@@ -294,7 +294,7 @@
 +#endif /* _NETFILTER_MIME_H */
 --- a/net/ipv4/netfilter/Makefile
 +++ b/net/ipv4/netfilter/Makefile
-@@ -26,6 +26,7 @@ obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_am
+@@ -26,6 +26,7 @@
  obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
  obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
  obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
@@ -304,7 +304,7 @@
  obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -267,6 +267,16 @@ config NF_CONNTRACK_TFTP
+@@ -267,6 +267,16 @@
  
  	  To compile it as a module, choose M here.  If unsure, say N.
  
@@ -323,7 +323,7 @@
  	select NETFILTER_NETLINK
 --- a/net/netfilter/Makefile
 +++ b/net/netfilter/Makefile
-@@ -33,6 +33,7 @@ obj-$(CONFIG_NF_CONNTRACK_PPTP) += nf_co
+@@ -33,6 +33,7 @@
  obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
  obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
  obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
@@ -333,7 +333,7 @@
  obj-$(CONFIG_NETFILTER_TPROXY) += nf_tproxy_core.o
 --- a/net/ipv4/netfilter/Kconfig
 +++ b/net/ipv4/netfilter/Kconfig
-@@ -268,6 +268,11 @@ config NF_NAT_IRC
+@@ -257,6 +257,11 @@
  	depends on NF_CONNTRACK && NF_NAT
  	default NF_NAT && NF_CONNTRACK_IRC
  
diff --git a/target/linux/generic-2.6/patches-2.6.29/205-skb_padding.patch b/target/linux/generic-2.6/patches-2.6.29/205-skb_padding.patch
index d87160acfb..c11bffe550 100644
--- a/target/linux/generic-2.6/patches-2.6.29/205-skb_padding.patch
+++ b/target/linux/generic-2.6/patches-2.6.29/205-skb_padding.patch
@@ -1,6 +1,6 @@
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -1292,9 +1292,12 @@ static inline int skb_network_offset(con
+@@ -1306,9 +1306,12 @@
   *
   * Various parts of the networking layer expect at least 16 bytes of
   * headroom, you should not reduce this.
diff --git a/target/linux/generic-2.6/patches-2.6.30/150-netfilter_imq.patch b/target/linux/generic-2.6/patches-2.6.30/150-netfilter_imq.patch
index af85c65513..d1248ac154 100644
--- a/target/linux/generic-2.6/patches-2.6.30/150-netfilter_imq.patch
+++ b/target/linux/generic-2.6/patches-2.6.30/150-netfilter_imq.patch
@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/drivers/net/imq.c
-@@ -0,0 +1,474 @@
+@@ -0,0 +1,571 @@
 +/*
 + *             Pseudo-driver for the intermediate queue device.
 + *
@@ -51,10 +51,28 @@
 + *
 + *
 + *             2008/06/17 - 2.6.25 - Changed imq.c to use qdisc_run() instead
-+ *	       of qdisc_restart() and moved qdisc_run() to tasklet to avoid
++ *             of qdisc_restart() and moved qdisc_run() to tasklet to avoid
 + *             recursive locking. New initialization routines to fix 'rmmod' not
 + *             working anymore. Used code from ifb.c. (Jussi Kivilinna)
 + *
++ *             2008/08/06 - 2.6.26 - (JK)
++ *              - Replaced tasklet with 'netif_schedule()'.
++ *              - Cleaned up and added comments for imq_nf_queue().
++ *
++ *             2009/04/12
++ *              - Add skb_save_cb/skb_restore_cb helper functions for backuping
++ *                control buffer. This is needed because qdisc-layer on kernels
++ *                2.6.27 and newer overwrite control buffer. (Jussi Kivilinna)
++ *              - Add better locking for IMQ device. Hopefully this will solve
++ *                SMP issues. (Jussi Kivilinna)
++ *              - Port to 2.6.27
++ *              - Port to 2.6.28
++ *              - Port to 2.6.29 + fix rmmod not working
++ *
++ *             2009/04/20 - (Jussi Kivilinna)
++ *              - Use netdevice feature flags to avoid extra packet handling
++ *                by core networking layer and possibly increase performance.
++ *
 + *	       Also, many thanks to pablo Sebastian Greco for making the initial
 + *	       patch and to those who helped the testing.
 + *
@@ -64,8 +82,10 @@
 +#include <linux/module.h>
 +#include <linux/kernel.h>
 +#include <linux/moduleparam.h>
++#include <linux/list.h>
 +#include <linux/skbuff.h>
 +#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
 +#include <linux/rtnetlink.h>
 +#include <linux/if_arp.h>
 +#include <linux/netfilter.h>
@@ -77,11 +97,6 @@
 +#include <net/pkt_sched.h>
 +#include <net/netfilter/nf_queue.h>
 +
-+struct imq_private {
-+	struct tasklet_struct tasklet;
-+	unsigned long tasklet_pending;
-+};
-+
 +static nf_hookfn imq_nf_hook;
 +
 +static struct nf_hook_ops imq_ingress_ipv4 = {
@@ -140,8 +155,11 @@
 +static unsigned int numdevs = IMQ_MAX_DEVS;
 +#endif
 +
++static DEFINE_SPINLOCK(imq_nf_queue_lock);
++
 +static struct net_device *imq_devs_cache[IMQ_MAX_DEVS];
 +
++
 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
 +{
 +	return &dev->stats;
@@ -153,12 +171,35 @@
 +	struct nf_queue_entry *entry = skb->nf_queue_entry;
 +
 +	if (entry) {
-+		if (entry->indev)
-+			dev_put(entry->indev);
-+		if (entry->outdev)
-+			dev_put(entry->outdev);
++		nf_queue_entry_release_refs(entry);
 +		kfree(entry);
 +	}
++
++	skb_restore_cb(skb); /* kfree backup */
++}
++
++static void imq_nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
++{
++	int status;
++
++	if (!entry->next_outfn) {
++		spin_lock_bh(&imq_nf_queue_lock);
++		nf_reinject(entry, verdict);
++		spin_unlock_bh(&imq_nf_queue_lock);
++		return;
++	}
++
++	rcu_read_lock();
++	local_bh_disable();
++	status = entry->next_outfn(entry, entry->next_queuenum);
++	local_bh_enable();
++	if (status < 0) {
++		nf_queue_entry_release_refs(entry);
++		kfree_skb(entry->skb);
++		kfree(entry);
++	}
++
++	rcu_read_unlock();
 +}
 +
 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -169,26 +210,35 @@
 +	skb->imq_flags = 0;
 +	skb->destructor = NULL;
 +
++	skb_restore_cb(skb); /* restore skb->cb */
++
 +	dev->trans_start = jiffies;
-+	nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
++	imq_nf_reinject(skb->nf_queue_entry, NF_ACCEPT);
 +	return 0;
 +}
 +
 +static int imq_nf_queue(struct nf_queue_entry *entry, unsigned queue_num)
 +{
 +	struct net_device *dev;
-+	struct imq_private *priv;
-+	struct sk_buff *skb2 = NULL;
++	struct sk_buff *skb_orig, *skb, *skb_shared;
 +	struct Qdisc *q;
-+	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
-+	int ret = -1;
-+
-+	if (index > numdevs)
-+		return -1;
++	struct netdev_queue *txq;
++	int users, index;
++	int retval = -EINVAL;
++
++	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);
++		retval = -EINVAL;
++		goto out;
++	}
 +
 +	/* check for imq device by index from cache */
 +	dev = imq_devs_cache[index];
-+	if (!dev) {
++	if (unlikely(!dev)) {
 +		char buf[8];
 +
 +		/* get device by name and cache result */
@@ -197,49 +247,90 @@
 +		if (!dev) {
 +			/* not found ?!*/
 +			BUG();
-+			return -1;
++			retval = -ENODEV;
++			goto out;
 +		}
 +
 +		imq_devs_cache[index] = dev;
++		dev_put(dev);
 +	}
 +
-+	priv = netdev_priv(dev);
-+	if (!(dev->flags & IFF_UP)) {
++	if (unlikely(!(dev->flags & IFF_UP))) {
 +		entry->skb->imq_flags = 0;
-+		nf_reinject(entry, NF_ACCEPT);
-+		return 0;
++		imq_nf_reinject(entry, NF_ACCEPT);
++		retval = 0;
++		goto out;
 +	}
 +	dev->last_rx = jiffies;
 +
-+	if (entry->skb->destructor) {
-+		skb2 = entry->skb;
-+		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
-+		if (!entry->skb)
-+			return -1;
++	skb = entry->skb;
++	skb_orig = NULL;
++
++	/* skb has owner? => make clone */
++	if (unlikely(skb->destructor)) {
++		skb_orig = skb;
++		skb = skb_clone(skb, GFP_ATOMIC);
++		if (!skb) {
++			retval = -ENOMEM;
++			goto out;
++		}
++		entry->skb = skb;
 +	}
-+	entry->skb->nf_queue_entry = entry;
 +
-+	dev->stats.rx_bytes += entry->skb->len;
++	skb->nf_queue_entry = entry;
++
++	dev->stats.rx_bytes += skb->len;
 +	dev->stats.rx_packets++;
 +
-+	spin_lock_bh(&dev->queue_lock);
-+	q = dev->qdisc;
-+	if (q->enqueue) {
-+		q->enqueue(skb_get(entry->skb), q);
-+		if (skb_shared(entry->skb)) {
-+			entry->skb->destructor = imq_skb_destructor;
-+			kfree_skb(entry->skb);
-+			ret = 0;
-+		}
-+	}
-+	if (!test_and_set_bit(1, &priv->tasklet_pending))
-+		tasklet_schedule(&priv->tasklet);
-+	spin_unlock_bh(&dev->queue_lock);
++	txq = dev_pick_tx(dev, skb);
 +
-+	if (skb2)
-+		kfree_skb(ret ? entry->skb : skb2);
++	q = rcu_dereference(txq->qdisc);
++	if (unlikely(!q->enqueue))
++		goto packet_not_eaten_by_imq_dev;
 +
-+	return ret;
++	spin_lock_bh(qdisc_lock(q));
++
++	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 */
++	qdisc_enqueue_root(skb_shared, q); /* might kfree_skb */
++
++	if (likely(atomic_read(&skb_shared->users) == users + 1)) {
++		kfree_skb(skb_shared); /* decrease reference count by one */
++
++		skb->destructor = &imq_skb_destructor;
++
++		/* cloned? */
++		if (skb_orig)
++			kfree_skb(skb_orig); /* free original */
++
++		spin_unlock_bh(qdisc_lock(q));
++
++		/* schedule qdisc dequeue */
++		__netif_schedule(q);
++
++		retval = 0;
++		goto out;
++	} else {
++		skb_restore_cb(skb_shared); /* restore skb->cb */
++		/* 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. */
++		spin_unlock_bh(qdisc_lock(q));
++		goto packet_not_eaten_by_imq_dev;
++	}
++
++packet_not_eaten_by_imq_dev:
++	/* cloned? restore original */
++	if (skb_orig) {
++		kfree_skb(skb);
++		entry->skb = skb_orig;
++	}
++	retval = -1;
++out:
++	return retval;
 +}
 +
 +static struct nf_queue_handler nfqh = {
@@ -247,17 +338,6 @@
 +	.outfn = imq_nf_queue,
 +};
 +
-+static void qdisc_run_tasklet(unsigned long arg)
-+{
-+	struct net_device *dev = (struct net_device *)arg;
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	spin_lock(&dev->queue_lock);
-+	qdisc_run(dev);
-+	clear_bit(1, &priv->tasklet_pending);
-+	spin_unlock(&dev->queue_lock);
-+}
-+
 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
 +				const struct net_device *indev,
 +				const struct net_device *outdev,
@@ -271,87 +351,98 @@
 +
 +static int imq_close(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_kill(&priv->tasklet);
 +	netif_stop_queue(dev);
-+
 +	return 0;
 +}
 +
 +static int imq_open(struct net_device *dev)
 +{
-+	struct imq_private *priv = netdev_priv(dev);
-+
-+	tasklet_init(&priv->tasklet, qdisc_run_tasklet, (unsigned long)dev);
 +	netif_start_queue(dev);
-+
 +	return 0;
 +}
 +
++static const struct net_device_ops imq_netdev_ops = {
++	.ndo_open		= imq_open,
++	.ndo_stop		= imq_close,
++	.ndo_start_xmit		= imq_dev_xmit,
++	.ndo_get_stats		= imq_get_stats,
++};
++
 +static void imq_setup(struct net_device *dev)
 +{
-+	dev->hard_start_xmit    = imq_dev_xmit;
-+	dev->open		= imq_open;
-+	dev->get_stats		= imq_get_stats;
-+	dev->stop		= imq_close;
++	dev->netdev_ops		= &imq_netdev_ops;
 +	dev->type               = ARPHRD_VOID;
 +	dev->mtu                = 16000;
 +	dev->tx_queue_len       = 11000;
 +	dev->flags              = IFF_NOARP;
++	dev->features           = NETIF_F_SG | NETIF_F_FRAGLIST |
++				  NETIF_F_GSO | NETIF_F_HW_CSUM |
++				  NETIF_F_HIGHDMA;
++}
++
++static int imq_validate(struct nlattr *tb[], struct nlattr *data[])
++{
++	int ret = 0;
++
++	if (tb[IFLA_ADDRESS]) {
++		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
++			ret = -EINVAL;
++			goto end;
++		}
++		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
++			ret = -EADDRNOTAVAIL;
++			goto end;
++		}
++	}
++	return 0;
++end:
++	printk(KERN_WARNING "IMQ: imq_validate failed (%d)\n", ret);
++	return ret;
 +}
 +
 +static struct rtnl_link_ops imq_link_ops __read_mostly = {
 +	.kind		= "imq",
-+	.priv_size	= sizeof(struct imq_private),
++	.priv_size	= 0,
 +	.setup		= imq_setup,
++	.validate	= imq_validate,
 +};
 +
 +static int __init imq_init_hooks(void)
 +{
 +	int err;
 +
-+	err = nf_register_queue_handler(PF_INET, &nfqh);
-+	if (err)
-+		goto err1;
++	nf_register_queue_imq_handler(&nfqh);
 +
 +	err = nf_register_hook(&imq_ingress_ipv4);
 +	if (err)
-+		goto err2;
++		goto err1;
 +
 +	err = nf_register_hook(&imq_egress_ipv4);
 +	if (err)
-+		goto err3;
++		goto err2;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+	err = nf_register_queue_handler(PF_INET6, &nfqh);
-+	if (err)
-+		goto err4;
-+
 +	err = nf_register_hook(&imq_ingress_ipv6);
 +	if (err)
-+		goto err5;
++		goto err3;
 +
 +	err = nf_register_hook(&imq_egress_ipv6);
 +	if (err)
-+		goto err6;
++		goto err4;
 +#endif
 +
 +	return 0;
 +
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+err6:
-+	nf_unregister_hook(&imq_ingress_ipv6);
-+err5:
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +err4:
++	nf_unregister_hook(&imq_ingress_ipv6);
++err3:
 +	nf_unregister_hook(&imq_egress_ipv4);
 +#endif
-+err3:
-+	nf_unregister_hook(&imq_ingress_ipv4);
 +err2:
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++	nf_unregister_hook(&imq_ingress_ipv4);
 +err1:
++	nf_unregister_queue_imq_handler();
 +	return err;
 +}
 +
@@ -360,7 +451,7 @@
 +	struct net_device *dev;
 +	int ret;
 +
-+	dev = alloc_netdev(sizeof(struct imq_private), "imq%d", imq_setup);
++	dev = alloc_netdev(0, "imq%d", imq_setup);
 +	if (!dev)
 +		return -ENOMEM;
 +
@@ -383,7 +474,7 @@
 +{
 +	int err, i;
 +
-+	if (!numdevs || numdevs > IMQ_MAX_DEVS) {
++	if (numdevs < 1 || numdevs > IMQ_MAX_DEVS) {
 +		printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
 +		       IMQ_MAX_DEVS);
 +		return -EINVAL;
@@ -408,6 +499,12 @@
 +{
 +	int err;
 +
++#if defined(CONFIG_IMQ_NUM_DEVS)
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS > 16);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS < 2);
++	BUILD_BUG_ON(CONFIG_IMQ_NUM_DEVS - 1 > IMQ_F_IFMASK);
++#endif
++
 +	err = imq_init_devs();
 +	if (err) {
 +		printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
@@ -443,11 +540,11 @@
 +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 +	nf_unregister_hook(&imq_ingress_ipv6);
 +	nf_unregister_hook(&imq_egress_ipv6);
-+	nf_unregister_queue_handler(PF_INET6, &nfqh);
 +#endif
 +	nf_unregister_hook(&imq_ingress_ipv4);
 +	nf_unregister_hook(&imq_egress_ipv4);
-+	nf_unregister_queue_handler(PF_INET, &nfqh);
++
++	nf_unregister_queue_imq_handler();
 +}
 +
 +static void __exit imq_cleanup_devs(void)
@@ -477,7 +574,7 @@
 +
 --- a/drivers/net/Kconfig
 +++ b/drivers/net/Kconfig
-@@ -119,6 +119,129 @@ config EQUALIZER
+@@ -119,6 +119,129 @@
  	  To compile this driver as a module, choose M here: the module
  	  will be called eql.  If unsure, say N.
  
@@ -609,7 +706,7 @@
  	select CRC32
 --- a/drivers/net/Makefile
 +++ b/drivers/net/Makefile
-@@ -152,6 +152,7 @@ obj-$(CONFIG_SLHC) += slhc.o
+@@ -152,6 +152,7 @@
  obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
  
  obj-$(CONFIG_DUMMY) += dummy.o
@@ -619,52 +716,102 @@
  obj-$(CONFIG_DE600) += de600.o
 --- /dev/null
 +++ b/include/linux/imq.h
-@@ -0,0 +1,9 @@
+@@ -0,0 +1,13 @@
 +#ifndef _IMQ_H
 +#define _IMQ_H
 +
-+#define IMQ_MAX_DEVS   16
++/* IFMASK (16 device indexes, 0 to 15) and flag(s) fit in 5 bits */
++#define IMQ_F_BITS	5
++
++#define IMQ_F_IFMASK	0x0f
++#define IMQ_F_ENQUEUE	0x10
 +
-+#define IMQ_F_IFMASK   0x7f
-+#define IMQ_F_ENQUEUE  0x80
++#define IMQ_MAX_DEVS	(IMQ_F_IFMASK + 1)
 +
 +#endif /* _IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IPT_IMQ_H
 +#define _IPT_IMQ_H
 +
-+struct ipt_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ipt_imq_info xt_imq_info
 +
 +#endif /* _IPT_IMQ_H */
++
 --- /dev/null
 +++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
-@@ -0,0 +1,8 @@
+@@ -0,0 +1,10 @@
 +#ifndef _IP6T_IMQ_H
 +#define _IP6T_IMQ_H
 +
-+struct ip6t_imq_info {
-+	unsigned int todev;     /* target imq device */
-+};
++/* Backwards compatibility for old userspace */
++#include <linux/netfilter/xt_IMQ.h>
++
++#define ip6t_imq_info xt_imq_info
 +
 +#endif /* _IP6T_IMQ_H */
++
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -363,6 +363,10 @@ struct sk_buff {
+@@ -28,6 +28,9 @@
+ #include <linux/rcupdate.h>
+ #include <linux/dmaengine.h>
+ #include <linux/hrtimer.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
+@@ -333,6 +336,9 @@
+ 	 * first. This is owned by whoever has the skb queued ATM.
+ 	 */
+ 	char			cb[48];
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	void			*cb_next;
++#endif
+ 
+ 	unsigned int		len,
+ 				data_len;
+@@ -363,6 +369,9 @@
  	struct nf_conntrack	*nfct;
  	struct sk_buff		*nfct_reasm;
  #endif
 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
-+	unsigned char			imq_flags;
 +	struct nf_queue_entry	*nf_queue_entry;
 +#endif
  #ifdef CONFIG_BRIDGE_NETFILTER
  	struct nf_bridge_info	*nf_bridge;
  #endif
-@@ -1931,6 +1935,10 @@ static inline void __nf_copy(struct sk_b
+@@ -383,6 +392,9 @@
+ 	__u8			requeue:1;
+ #endif
+ 	/* 0/13/14 bit hole */
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	__u8			imq_flags:IMQ_F_BITS;
++#endif
+ 
+ #ifdef CONFIG_NET_DMA
+ 	dma_cookie_t		dma_cookie;
+@@ -423,6 +435,12 @@
+ 			  enum dma_data_direction dir);
+ #endif
+ 
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern int skb_save_cb(struct sk_buff *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);
+@@ -1931,6 +1949,10 @@
  	dst->nfct_reasm = src->nfct_reasm;
  	nf_conntrack_get_reasm(src->nfct_reasm);
  #endif
@@ -687,7 +834,7 @@
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  #include <linux/stat.h>
-@@ -1678,7 +1681,11 @@ int dev_hard_start_xmit(struct sk_buff *
+@@ -1678,7 +1681,11 @@
  	int rc;
  
  	if (likely(!skb->next)) {
@@ -700,215 +847,414 @@
  			dev_queue_xmit_nit(skb, dev);
  
  		if (netif_needs_gso(dev, skb)) {
+@@ -1748,8 +1755,7 @@
+ }
+ EXPORT_SYMBOL(skb_tx_hash);
+ 
+-static struct netdev_queue *dev_pick_tx(struct net_device *dev,
+-					struct sk_buff *skb)
++struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb)
+ {
+ 	const struct net_device_ops *ops = dev->netdev_ops;
+ 	u16 queue_index = 0;
+@@ -1762,6 +1768,7 @@
+ 	skb_set_queue_mapping(skb, queue_index);
+ 	return netdev_get_tx_queue(dev, queue_index);
+ }
++EXPORT_SYMBOL(dev_pick_tx);
+ 
+ /**
+  *	dev_queue_xmit - transmit a buffer
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1102,6 +1102,7 @@
+ extern int		dev_open(struct net_device *dev);
+ extern int		dev_close(struct net_device *dev);
+ extern void		dev_disable_lro(struct net_device *dev);
++extern struct netdev_queue *dev_pick_tx(struct net_device *dev, struct sk_buff *skb);
+ extern int		dev_queue_xmit(struct sk_buff *skb);
+ extern int		register_netdevice(struct net_device *dev);
+ extern void		unregister_netdevice(struct net_device *dev);
 --- /dev/null
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -0,0 +1,69 @@
-+/*
-+ * This target marks packets to be enqueued to an imq device
-+ */
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_ipv4/ipt_IMQ.h>
-+#include <linux/imq.h>
++++ b/include/linux/netfilter/xt_IMQ.h
+@@ -0,0 +1,9 @@
++#ifndef _XT_IMQ_H
++#define _XT_IMQ_H
 +
-+static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++struct xt_imq_info {
++	unsigned int todev;     /* target imq device */
++};
++
++#endif /* _XT_IMQ_H */
++
+--- a/include/net/netfilter/nf_queue.h
++++ b/include/net/netfilter/nf_queue.h
+@@ -13,6 +13,12 @@
+ 	struct net_device	*indev;
+ 	struct net_device	*outdev;
+ 	int			(*okfn)(struct sk_buff *);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	int			(*next_outfn)(struct nf_queue_entry *entry,
++					      unsigned int queuenum);
++	unsigned int		next_queuenum;
++#endif
+ };
+ 
+ #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
+@@ -30,5 +36,11 @@
+ 				       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);
++extern void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
++
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++extern void nf_register_queue_imq_handler(const struct nf_queue_handler *qh);
++extern void nf_unregister_queue_imq_handler(void);
++#endif
+ 
+ #endif /* _NF_QUEUE_H */
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -71,6 +71,9 @@
+ 
+ static 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)
+@@ -90,6 +93,80 @@
+ 	return 1;
+ }
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++/* Control buffer save/restore for IMQ devices */
++struct skb_cb_table {
++	void			*cb_next;
++	atomic_t		refcnt;
++	char      		cb[48];
++};
++
++static DEFINE_SPINLOCK(skb_cb_store_lock);
++
++int skb_save_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
++	struct skb_cb_table *next;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	next = kmem_cache_alloc(skbuff_cb_store_cache, GFP_ATOMIC);
++	if (!next)
++		return -ENOMEM;
 +
-+	return XT_CONTINUE;
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(next->cb, skb->cb, sizeof(skb->cb));
++	next->cb_next = skb->cb_next;
++
++	atomic_set(&next->refcnt, 1);
++
++	skb->cb_next = next;
++	return 0;
 +}
++EXPORT_SYMBOL(skb_save_cb);
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *e,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++int skb_restore_cb(struct sk_buff *skb)
 +{
-+	struct ipt_imq_info *mr;
++	struct skb_cb_table *next;
 +
-+	mr = (struct ipt_imq_info *)targinfo;
-+
-+	if (mr->todev > IMQ_MAX_DEVS) {
-+		printk(KERN_WARNING
-+		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++	if (!skb->cb_next)
 +		return 0;
++
++	next = skb->cb_next;
++
++	BUILD_BUG_ON(sizeof(skb->cb) != sizeof(next->cb));
++
++	memcpy(skb->cb, next->cb, sizeof(skb->cb));
++	skb->cb_next = next->cb_next;
++
++	spin_lock(&skb_cb_store_lock);
++
++	if (atomic_dec_and_test(&next->refcnt)) {
++		kmem_cache_free(skbuff_cb_store_cache, next);
 +	}
 +
-+	return 1;
++	spin_unlock(&skb_cb_store_lock);
++
++	return 0;
 +}
++EXPORT_SYMBOL(skb_restore_cb);
 +
-+static struct xt_target ipt_imq_reg = {
-+	.name		= "IMQ",
-+	.family		= AF_INET,
-+	.target		= imq_target,
-+	.targetsize	= sizeof(struct ipt_imq_info),
-+	.checkentry	= imq_checkentry,
-+	.me		= THIS_MODULE,
-+	.table		= "mangle"
-+};
++static void skb_copy_stored_cb(struct sk_buff *new, struct sk_buff *old)
++{
++	struct skb_cb_table *next;
++
++	if (!old->cb_next) {
++		new->cb_next = 0;
++		return;
++	}
++
++	spin_lock(&skb_cb_store_lock);
++
++	next = old->cb_next;
++	atomic_inc(&next->refcnt);
++	new->cb_next = next;
++
++	spin_unlock(&skb_cb_store_lock);
++}
++#endif
+ 
+ /* Pipe buffer operations for a socket. */
+ static struct pipe_buf_operations sock_pipe_buf_ops = {
+@@ -389,6 +466,15 @@
+ 		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. */
++	while(skb->cb_next != NULL) {
++		printk(KERN_WARNING "kfree_skb: skb->cb_next: %08x\n",
++			skb->cb_next);
++		skb_restore_cb(skb);
++	}
++#endif
+ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ 	nf_conntrack_put(skb->nfct);
+ 	nf_conntrack_put_reasm(skb->nfct_reasm);
+@@ -524,6 +610,9 @@
+ 	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);
++#endif
+ 	new->csum_start		= old->csum_start;
+ 	new->csum_offset	= old->csum_offset;
+ 	new->local_df		= old->local_df;
+@@ -2766,6 +2855,13 @@
+ 						0,
+ 						SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+ 						NULL);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	skbuff_cb_store_cache = kmem_cache_create("skbuff_cb_store_cache",
++						  sizeof(struct skb_cb_table),
++						  0,
++						  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
++						  NULL);
++#endif
+ }
+ 
+ /**
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -396,6 +396,18 @@
+ 	  For more information on the LEDs available on your system, see
+ 	  Documentation/leds-class.txt
+ 
++config NETFILTER_XT_TARGET_IMQ
++        tristate '"IMQ" target support'
++	depends on NETFILTER_XTABLES
++	depends on IP_NF_MANGLE || IP6_NF_MANGLE
++	select IMQ
++	default m if NETFILTER_ADVANCED=n
++        help
++          This option adds a `IMQ' target which is used to specify if and
++          to which imq device packets should get enqueued/dequeued.
 +
-+static int __init init(void)
++          To compile it as a module, choose M here.  If unsure, say N.
++
+ config NETFILTER_XT_TARGET_MARK
+ 	tristate '"MARK" target support'
+ 	default m if NETFILTER_ADVANCED=n
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -46,6 +46,7 @@
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
+ obj-$(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-$(CONFIG_NETFILTER_XT_TARGET_LED) += xt_LED.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG) += xt_NFLOG.o
+--- a/net/netfilter/nf_queue.c
++++ b/net/netfilter/nf_queue.c
+@@ -20,6 +20,26 @@
+ 
+ static DEFINE_MUTEX(queue_handler_mutex);
+ 
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++static const struct nf_queue_handler *queue_imq_handler;
++
++void nf_register_queue_imq_handler(const struct nf_queue_handler *qh)
 +{
-+	return xt_register_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, qh);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(nf_register_queue_imq_handler);
 +
-+static void __exit fini(void)
++void nf_unregister_queue_imq_handler(void)
 +{
-+	xt_unregister_target(&ipt_imq_reg);
++	mutex_lock(&queue_handler_mutex);
++	rcu_assign_pointer(queue_imq_handler, NULL);
++	mutex_unlock(&queue_handler_mutex);
 +}
++EXPORT_SYMBOL(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)
+@@ -80,7 +100,7 @@
+ }
+ 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)
+@@ -100,6 +120,7 @@
+ 	/* 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
+@@ -121,12 +142,26 @@
+ #endif
+ 	const struct nf_afinfo *afinfo;
+ 	const struct nf_queue_handler *qh;
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	const struct nf_queue_handler *qih = NULL;
++#endif
+ 
+ 	/* QUEUE == DROP if noone is waiting, to be safe. */
+ 	rcu_read_lock();
+ 
+ 	qh = rcu_dereference(queue_handler[pf]);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
++	if (pf == PF_INET || pf == PF_INET6)
++#else
++	if (pf == PF_INET)
++#endif
++		qih = rcu_dereference(queue_imq_handler);
 +
-+module_init(init);
-+module_exit(fini);
++	if (!qh && !qih)
++#else /* !IMQ */
+ 	if (!qh)
++#endif
+ 		goto err_unlock;
+ 
+ 	afinfo = nf_get_afinfo(pf);
+@@ -145,6 +180,10 @@
+ 		.indev	= indev,
+ 		.outdev	= outdev,
+ 		.okfn	= okfn,
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++		.next_outfn = qh ? qh->outfn : NULL,
++		.next_queuenum = queuenum,
++#endif
+ 	};
+ 
+ 	/* If it's going away, ignore hook. */
+@@ -170,8 +209,19 @@
+ 	}
+ #endif
+ 	afinfo->saveroute(skb, entry);
 +
-+MODULE_AUTHOR("http://www.linuximq.net");
-+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
-+MODULE_LICENSE("GPL");
---- a/net/ipv4/netfilter/Kconfig
-+++ b/net/ipv4/netfilter/Kconfig
-@@ -112,6 +112,17 @@ config IP_NF_FILTER
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++	if (qih) {
++		status = qih->outfn(entry, queuenum);
++		goto imq_skip_queue;
++	}
++#endif
++
+ 	status = qh->outfn(entry, queuenum);
  
- 	  To compile it as a module, choose M here.  If unsure, say N.
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++imq_skip_queue:
++#endif
+ 	rcu_read_unlock();
  
-+config IP_NF_TARGET_IMQ
-+       tristate "IMQ target support"
-+       depends on IP_NF_MANGLE && IMQ
-+       help
-+         This option adds a `IMQ' target which is used to specify if and
-+         to which IMQ device packets should get enqueued/dequeued.
-+
-+	 For more information visit: http://www.linuximq.net/
-+
-+         To compile it as a module, choose M here.  If unsure, say N.
-+
- config IP_NF_TARGET_REJECT
- 	tristate "REJECT target support"
- 	depends on IP_NF_FILTER
---- a/net/ipv4/netfilter/Makefile
-+++ b/net/ipv4/netfilter/Makefile
-@@ -57,6 +57,7 @@ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set
- obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
- obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
- obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
-+obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
- obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
- obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
- obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ 	if (status < 0) {
 --- /dev/null
-+++ b/net/ipv6/netfilter/ip6t_IMQ.c
-@@ -0,0 +1,69 @@
++++ b/net/netfilter/xt_IMQ.c
+@@ -0,0 +1,73 @@
 +/*
 + * This target marks packets to be enqueued to an imq device
 + */
 +#include <linux/module.h>
 +#include <linux/skbuff.h>
-+#include <linux/netfilter_ipv6/ip6_tables.h>
-+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_IMQ.h>
 +#include <linux/imq.h>
 +
 +static unsigned int imq_target(struct sk_buff *pskb,
-+			       const struct net_device *in,
-+			       const struct net_device *out,
-+			       unsigned int hooknum,
-+			       const struct xt_target *target,
-+			       const void *targinfo)
++				const struct xt_target_param *par)
 +{
-+	struct ip6t_imq_info *mr = (struct ip6t_imq_info *)targinfo;
++	const struct xt_imq_info *mr = par->targinfo;
 +
-+	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++	pskb->imq_flags = (mr->todev & IMQ_F_IFMASK) | IMQ_F_ENQUEUE;
 +
 +	return XT_CONTINUE;
 +}
 +
-+static bool imq_checkentry(const char *tablename,
-+			  const void *entry,
-+			  const struct xt_target *target,
-+			  void *targinfo,
-+			  unsigned int hook_mask)
++static bool imq_checkentry(const struct xt_tgchk_param *par)
 +{
-+	struct ip6t_imq_info *mr;
-+
-+	mr = (struct ip6t_imq_info *)targinfo;
++	struct xt_imq_info *mr = par->targinfo;
 +
-+	if (mr->todev > IMQ_MAX_DEVS) {
++	if (mr->todev > IMQ_MAX_DEVS - 1) {
 +		printk(KERN_WARNING
 +		       "IMQ: invalid device specified, highest is %u\n",
-+		       IMQ_MAX_DEVS);
++		       IMQ_MAX_DEVS - 1);
 +		return 0;
 +	}
 +
 +	return 1;
 +}
 +
-+static struct xt_target ip6t_imq_reg = {
-+	.name           = "IMQ",
-+	.family		= AF_INET6,
-+	.target         = imq_target,
-+	.targetsize	= sizeof(struct ip6t_imq_info),
-+	.table		= "mangle",
-+	.checkentry     = imq_checkentry,
-+	.me             = THIS_MODULE
++static struct xt_target xt_imq_reg[] __read_mostly = {
++	{
++		.name           = "IMQ",
++		.family		= AF_INET,
++		.checkentry     = imq_checkentry,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.me             = THIS_MODULE
++	},
++	{
++		.name           = "IMQ",
++		.family		= AF_INET6,
++		.checkentry     = imq_checkentry,
++		.target         = imq_target,
++		.targetsize	= sizeof(struct xt_imq_info),
++		.table		= "mangle",
++		.me             = THIS_MODULE
++	},
 +};
 +
-+static int __init init(void)
++static int __init imq_init(void)
 +{
-+	return xt_register_target(&ip6t_imq_reg);
++	return xt_register_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+static void __exit fini(void)
++static void __exit imq_fini(void)
 +{
-+	xt_unregister_target(&ip6t_imq_reg);
++	xt_unregister_targets(xt_imq_reg, ARRAY_SIZE(xt_imq_reg));
 +}
 +
-+module_init(init);
-+module_exit(fini);
++module_init(imq_init);
++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_LICENSE("GPL");
---- a/net/ipv6/netfilter/Kconfig
-+++ b/net/ipv6/netfilter/Kconfig
-@@ -129,6 +129,15 @@ config IP6_NF_MATCH_RT
- 
- 	  To compile it as a module, choose M here.  If unsure, say N.
- 
-+config IP6_NF_TARGET_IMQ
-+	tristate "IMQ target support"
-+	depends on IP6_NF_MANGLE && IMQ
-+	help
-+          This option adds a `IMQ' target which is used to specify if and
-+          to which imq device packets should get enqueued/dequeued.
-+
-+          To compile it as a module, choose M here.  If unsure, say N.
++MODULE_ALIAS("ipt_IMQ");
++MODULE_ALIAS("ip6t_IMQ");
 +
- # The targets
- config IP6_NF_TARGET_HL
- 	tristate '"HL" hoplimit target support'
---- a/net/ipv6/netfilter/Makefile
-+++ b/net/ipv6/netfilter/Makefile
-@@ -6,6 +6,7 @@
- obj-$(CONFIG_IP6_NF_IPTABLES) += ip6_tables.o
- obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
- obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
-+obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
- obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
- obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
- obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
---- a/net/sched/sch_generic.c
-+++ b/net/sched/sch_generic.c
-@@ -195,6 +195,7 @@ void __qdisc_run(struct Qdisc *q)
- 
- 	clear_bit(__QDISC_STATE_RUNNING, &q->state);
- }
-+EXPORT_SYMBOL(__qdisc_run);
- 
- static void dev_watchdog(unsigned long arg)
- {
diff --git a/target/linux/generic-2.6/patches-2.6.30/151-netfilter_imq_2.6.28.patch b/target/linux/generic-2.6/patches-2.6.30/151-netfilter_imq_2.6.28.patch
deleted file mode 100644
index d4ed15129d..0000000000
--- a/target/linux/generic-2.6/patches-2.6.30/151-netfilter_imq_2.6.28.patch
+++ /dev/null
@@ -1,114 +0,0 @@
---- a/drivers/net/imq.c
-+++ b/drivers/net/imq.c
-@@ -178,10 +178,11 @@ static int imq_nf_queue(struct nf_queue_
- 	struct sk_buff *skb2 = NULL;
- 	struct Qdisc *q;
- 	unsigned int index = entry->skb->imq_flags & IMQ_F_IFMASK;
--	int ret = -1;
-+	struct netdev_queue *txq;
-+	int ret = -EINVAL;
- 
- 	if (index > numdevs)
--		return -1;
-+		return ret;
- 
- 	/* check for imq device by index from cache */
- 	dev = imq_devs_cache[index];
-@@ -194,7 +195,7 @@ static int imq_nf_queue(struct nf_queue_
- 		if (!dev) {
- 			/* not found ?!*/
- 			BUG();
--			return -1;
-+			return ret;
- 		}
- 
- 		imq_devs_cache[index] = dev;
-@@ -212,17 +213,19 @@ static int imq_nf_queue(struct nf_queue_
- 		skb2 = entry->skb;
- 		entry->skb = skb_clone(entry->skb, GFP_ATOMIC);
- 		if (!entry->skb)
--			return -1;
-+			return -ENOMEM;
- 	}
- 	entry->skb->nf_queue_entry = entry;
- 
- 	dev->stats.rx_bytes += entry->skb->len;
- 	dev->stats.rx_packets++;
- 
--	spin_lock_bh(&dev->queue_lock);
--	q = dev->qdisc;
-+	txq = netdev_get_tx_queue(dev, 0);
-+	__netif_tx_lock_bh(txq);
-+	q = txq->qdisc;
-+
- 	if (q->enqueue) {
--		q->enqueue(skb_get(entry->skb), q);
-+		qdisc_enqueue_root(skb_get(entry->skb), q);
- 		if (skb_shared(entry->skb)) {
- 			entry->skb->destructor = imq_skb_destructor;
- 			kfree_skb(entry->skb);
-@@ -231,7 +234,7 @@ static int imq_nf_queue(struct nf_queue_
- 	}
- 	if (!test_and_set_bit(1, &priv->tasklet_pending))
- 		tasklet_schedule(&priv->tasklet);
--	spin_unlock_bh(&dev->queue_lock);
-+	__netif_tx_unlock_bh(txq);
- 
- 	if (skb2)
- 		kfree_skb(ret ? entry->skb : skb2);
-@@ -248,11 +251,13 @@ static void qdisc_run_tasklet(unsigned l
- {
- 	struct net_device *dev = (struct net_device *)arg;
- 	struct imq_private *priv = netdev_priv(dev);
-+	struct netdev_queue *txq;
- 
--	spin_lock(&dev->queue_lock);
--	qdisc_run(dev);
-+	netif_tx_lock(dev);
-+	txq = netdev_get_tx_queue(dev, 0);
-+	qdisc_run(txq->qdisc);
- 	clear_bit(1, &priv->tasklet_pending);
--	spin_unlock(&dev->queue_lock);
-+	netif_tx_unlock(dev);
- }
- 
- static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
---- a/net/ipv4/netfilter/ipt_IMQ.c
-+++ b/net/ipv4/netfilter/ipt_IMQ.c
-@@ -7,29 +7,23 @@
- #include <linux/netfilter_ipv4/ipt_IMQ.h>
- #include <linux/imq.h>
- 
--static unsigned int imq_target(struct sk_buff *pskb,
--			       const struct net_device *in,
--			       const struct net_device *out,
--			       unsigned int hooknum,
--			       const struct xt_target *target,
--			       const void *targinfo)
-+static unsigned int
-+imq_target(struct sk_buff *pskb,
-+           const struct xt_target_param *par)
- {
--	struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
-+	struct ipt_imq_info *mr = (struct ipt_imq_info *)par->targinfo;
- 
- 	pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
- 
- 	return XT_CONTINUE;
- }
- 
--static bool imq_checkentry(const char *tablename,
--			  const void *e,
--			  const struct xt_target *target,
--			  void *targinfo,
--			  unsigned int hook_mask)
-+static bool
-+imq_checkentry(const struct xt_tgchk_param *par)
- {
- 	struct ipt_imq_info *mr;
- 
--	mr = (struct ipt_imq_info *)targinfo;
-+	mr = (struct ipt_imq_info *)par->targinfo;
- 
- 	if (mr->todev > IMQ_MAX_DEVS) {
- 		printk(KERN_WARNING
diff --git a/target/linux/generic-2.6/patches-2.6.30/180-netfilter_depends.patch b/target/linux/generic-2.6/patches-2.6.30/180-netfilter_depends.patch
index e05ec77514..e430cd78f1 100644
--- a/target/linux/generic-2.6/patches-2.6.30/180-netfilter_depends.patch
+++ b/target/linux/generic-2.6/patches-2.6.30/180-netfilter_depends.patch
@@ -1,6 +1,6 @@
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -160,7 +160,6 @@ config NF_CONNTRACK_FTP
+@@ -160,7 +160,6 @@
  
  config NF_CONNTRACK_H323
  	tristate "H.323 protocol support"
@@ -8,7 +8,7 @@
  	depends on NETFILTER_ADVANCED
  	help
  	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
-@@ -493,7 +492,6 @@ config NETFILTER_XT_TARGET_SECMARK
+@@ -505,7 +504,6 @@
  
  config NETFILTER_XT_TARGET_TCPMSS
  	tristate '"TCPMSS" target support'
diff --git a/target/linux/generic-2.6/patches-2.6.30/190-netfilter_rtsp.patch b/target/linux/generic-2.6/patches-2.6.30/190-netfilter_rtsp.patch
index 62d4cf2e95..7aff0e6ddc 100644
--- a/target/linux/generic-2.6/patches-2.6.30/190-netfilter_rtsp.patch
+++ b/target/linux/generic-2.6/patches-2.6.30/190-netfilter_rtsp.patch
@@ -294,7 +294,7 @@
 +#endif /* _NETFILTER_MIME_H */
 --- a/net/ipv4/netfilter/Makefile
 +++ b/net/ipv4/netfilter/Makefile
-@@ -26,6 +26,7 @@ obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_am
+@@ -26,6 +26,7 @@
  obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
  obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
  obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
@@ -304,7 +304,7 @@
  obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -267,6 +267,16 @@ config NF_CONNTRACK_TFTP
+@@ -267,6 +267,16 @@
  
  	  To compile it as a module, choose M here.  If unsure, say N.
  
@@ -323,7 +323,7 @@
  	select NETFILTER_NETLINK
 --- a/net/netfilter/Makefile
 +++ b/net/netfilter/Makefile
-@@ -33,6 +33,7 @@ obj-$(CONFIG_NF_CONNTRACK_PPTP) += nf_co
+@@ -33,6 +33,7 @@
  obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
  obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
  obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
@@ -333,7 +333,7 @@
  obj-$(CONFIG_NETFILTER_TPROXY) += nf_tproxy_core.o
 --- a/net/ipv4/netfilter/Kconfig
 +++ b/net/ipv4/netfilter/Kconfig
-@@ -268,6 +268,11 @@ config NF_NAT_IRC
+@@ -257,6 +257,11 @@
  	depends on NF_CONNTRACK && NF_NAT
  	default NF_NAT && NF_CONNTRACK_IRC
  
diff --git a/target/linux/generic-2.6/patches-2.6.30/205-skb_padding.patch b/target/linux/generic-2.6/patches-2.6.30/205-skb_padding.patch
index f1802fe1ec..9f527548f5 100644
--- a/target/linux/generic-2.6/patches-2.6.30/205-skb_padding.patch
+++ b/target/linux/generic-2.6/patches-2.6.30/205-skb_padding.patch
@@ -1,6 +1,6 @@
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -1355,9 +1355,12 @@ static inline int skb_network_offset(con
+@@ -1369,9 +1369,12 @@
   *
   * Various parts of the networking layer expect at least 32 bytes of
   * headroom, you should not reduce this.