fix IMQ on linux 2.6.27 and 2.6.28

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14599 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 190 insertions, 1 deletions

diff --git a/package/kernel/modules/netfilter.mk b/package/kernel/modules/netfilter.mk
index d757b9e976..5817595649 100644
--- a/package/kernel/modules/netfilter.mk
+++ b/package/kernel/modules/netfilter.mk
@@ -237,7 +237,7 @@ define KernelPackage/ipt-imq
 	imq \
 	$(IPT_IMQ-m) \
   ))
-  DEPENDS:= kmod-ipt-core @!LINUX_2_6_27 @!LINUX_2_6_28
+  DEPENDS:= kmod-ipt-core
 endef
 
 define KernelPackage/ipt-imq/description
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
new file mode 100644
index 0000000000..9390db7424
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.27/151-netfilter_imq_2.6.27.patch
@@ -0,0 +1,75 @@
+--- 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-2.6.28/151-netfilter_imq_2.6.28.patch b/target/linux/generic-2.6/patches-2.6.28/151-netfilter_imq_2.6.28.patch
new file mode 100644
index 0000000000..c531042444
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.28/151-netfilter_imq_2.6.28.patch
@@ -0,0 +1,114 @@
+--- 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 +253,13 @@ 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