Merge branch 'for-2.6.36' into for-2.6.37

Fairly simple conflicts, the most serious ones are the i.MX ones which I
suspect now need another rename.

Conflicts:
	arch/arm/mach-mx2/clock_imx27.c
	arch/arm/mach-mx2/devices.c
	arch/arm/mach-omap2/board-rx51-peripherals.c
	arch/arm/mach-omap2/board-zoom2.c
	sound/soc/fsl/mpc5200_dma.c
	sound/soc/fsl/mpc5200_dma.h
	sound/soc/fsl/mpc8610_hpcd.c
	sound/soc/pxa/spitz.c

16 files changed, 347 insertions, 182 deletions

diff --git a/net/bridge/br.c b/net/bridge/br.c
index 76357b547752..c8436fa31344 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -63,7 +63,6 @@ static int __init br_init(void)
 		goto err_out4;
 
 	brioctl_set(br_ioctl_deviceless_stub);
-	br_handle_frame_hook = br_handle_frame;
 
 #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
 	br_fdb_test_addr_hook = br_fdb_test_addr;
@@ -100,7 +99,6 @@ static void __exit br_deinit(void)
 	br_fdb_test_addr_hook = NULL;
 #endif
 
-	br_handle_frame_hook = NULL;
 	br_fdb_fini();
 }
 
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index eedf2c94820e..cf09fe591fc2 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -22,7 +22,7 @@
 #include <asm/uaccess.h>
 #include "br_private.h"
 
-/* net device transmit always called with no BH (preempt_disabled) */
+/* net device transmit always called with BH disabled */
 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct net_bridge *br = netdev_priv(dev);
@@ -38,17 +38,26 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 #endif
 
+	u64_stats_update_begin(&brstats->syncp);
 	brstats->tx_packets++;
 	brstats->tx_bytes += skb->len;
+	u64_stats_update_end(&brstats->syncp);
 
 	BR_INPUT_SKB_CB(skb)->brdev = dev;
 
 	skb_reset_mac_header(skb);
 	skb_pull(skb, ETH_HLEN);
 
+	rcu_read_lock();
 	if (is_multicast_ether_addr(dest)) {
-		if (br_multicast_rcv(br, NULL, skb))
+		if (unlikely(netpoll_tx_running(dev))) {
+			br_flood_deliver(br, skb);
+			goto out;
+		}
+		if (br_multicast_rcv(br, NULL, skb)) {
+			kfree_skb(skb);
 			goto out;
+		}
 
 		mdst = br_mdb_get(br, skb);
 		if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb))
@@ -61,6 +70,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 		br_flood_deliver(br, skb);
 
 out:
+	rcu_read_unlock();
 	return NETDEV_TX_OK;
 }
 
@@ -92,21 +102,25 @@ static int br_dev_stop(struct net_device *dev)
 	return 0;
 }
 
-static struct net_device_stats *br_get_stats(struct net_device *dev)
+static struct rtnl_link_stats64 *br_get_stats64(struct net_device *dev,
+						struct rtnl_link_stats64 *stats)
 {
 	struct net_bridge *br = netdev_priv(dev);
-	struct net_device_stats *stats = &dev->stats;
-	struct br_cpu_netstats sum = { 0 };
+	struct br_cpu_netstats tmp, sum = { 0 };
 	unsigned int cpu;
 
 	for_each_possible_cpu(cpu) {
+		unsigned int start;
 		const struct br_cpu_netstats *bstats
 			= per_cpu_ptr(br->stats, cpu);
-
-		sum.tx_bytes   += bstats->tx_bytes;
-		sum.tx_packets += bstats->tx_packets;
-		sum.rx_bytes   += bstats->rx_bytes;
-		sum.rx_packets += bstats->rx_packets;
+		do {
+			start = u64_stats_fetch_begin(&bstats->syncp);
+			memcpy(&tmp, bstats, sizeof(tmp));
+		} while (u64_stats_fetch_retry(&bstats->syncp, start));
+		sum.tx_bytes   += tmp.tx_bytes;
+		sum.tx_packets += tmp.tx_packets;
+		sum.rx_bytes   += tmp.rx_bytes;
+		sum.rx_packets += tmp.rx_packets;
 	}
 
 	stats->tx_bytes   = sum.tx_bytes;
@@ -127,7 +141,7 @@ static int br_change_mtu(struct net_device *dev, int new_mtu)
 
 #ifdef CONFIG_BRIDGE_NETFILTER
 	/* remember the MTU in the rtable for PMTU */
-	br->fake_rtable.u.dst.metrics[RTAX_MTU - 1] = new_mtu;
+	br->fake_rtable.dst.metrics[RTAX_MTU - 1] = new_mtu;
 #endif
 
 	return 0;
@@ -199,73 +213,81 @@ static int br_set_tx_csum(struct net_device *dev, u32 data)
 }
 
 #ifdef CONFIG_NET_POLL_CONTROLLER
-static bool br_devices_support_netpoll(struct net_bridge *br)
+static void br_poll_controller(struct net_device *br_dev)
 {
-	struct net_bridge_port *p;
-	bool ret = true;
-	int count = 0;
-	unsigned long flags;
-
-	spin_lock_irqsave(&br->lock, flags);
-	list_for_each_entry(p, &br->port_list, list) {
-		count++;
-		if ((p->dev->priv_flags & IFF_DISABLE_NETPOLL) ||
-		    !p->dev->netdev_ops->ndo_poll_controller)
-			ret = false;
-	}
-	spin_unlock_irqrestore(&br->lock, flags);
-	return count != 0 && ret;
 }
 
-static void br_poll_controller(struct net_device *br_dev)
+static void br_netpoll_cleanup(struct net_device *dev)
 {
-	struct netpoll *np = br_dev->npinfo->netpoll;
+	struct net_bridge *br = netdev_priv(dev);
+	struct net_bridge_port *p, *n;
 
-	if (np->real_dev != br_dev)
-		netpoll_poll_dev(np->real_dev);
+	list_for_each_entry_safe(p, n, &br->port_list, list) {
+		br_netpoll_disable(p);
+	}
 }
 
-void br_netpoll_cleanup(struct net_device *dev)
+static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni)
 {
 	struct net_bridge *br = netdev_priv(dev);
 	struct net_bridge_port *p, *n;
-	const struct net_device_ops *ops;
+	int err = 0;
 
-	br->dev->npinfo = NULL;
 	list_for_each_entry_safe(p, n, &br->port_list, list) {
-		if (p->dev) {
-			ops = p->dev->netdev_ops;
-			if (ops->ndo_netpoll_cleanup)
-				ops->ndo_netpoll_cleanup(p->dev);
-			else
-				p->dev->npinfo = NULL;
-		}
+		if (!p->dev)
+			continue;
+
+		err = br_netpoll_enable(p);
+		if (err)
+			goto fail;
 	}
+
+out:
+	return err;
+
+fail:
+	br_netpoll_cleanup(dev);
+	goto out;
 }
 
-void br_netpoll_disable(struct net_bridge *br,
-			struct net_device *dev)
+int br_netpoll_enable(struct net_bridge_port *p)
 {
-	if (br_devices_support_netpoll(br))
-		br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
-	if (dev->netdev_ops->ndo_netpoll_cleanup)
-		dev->netdev_ops->ndo_netpoll_cleanup(dev);
-	else
-		dev->npinfo = NULL;
+	struct netpoll *np;
+	int err = 0;
+
+	np = kzalloc(sizeof(*p->np), GFP_KERNEL);
+	err = -ENOMEM;
+	if (!np)
+		goto out;
+
+	np->dev = p->dev;
+
+	err = __netpoll_setup(np);
+	if (err) {
+		kfree(np);
+		goto out;
+	}
+
+	p->np = np;
+
+out:
+	return err;
 }
 
-void br_netpoll_enable(struct net_bridge *br,
-		       struct net_device *dev)
+void br_netpoll_disable(struct net_bridge_port *p)
 {
-	if (br_devices_support_netpoll(br)) {
-		br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
-		if (br->dev->npinfo)
-			dev->npinfo = br->dev->npinfo;
-	} else if (!(br->dev->priv_flags & IFF_DISABLE_NETPOLL)) {
-		br->dev->priv_flags |= IFF_DISABLE_NETPOLL;
-		br_info(br,"new device %s does not support netpoll (disabling)",
-			dev->name);
-	}
+	struct netpoll *np = p->np;
+
+	if (!np)
+		return;
+
+	p->np = NULL;
+
+	/* Wait for transmitting packets to finish before freeing. */
+	synchronize_rcu_bh();
+
+	__netpoll_cleanup(np);
+	kfree(np);
 }
 
 #endif
@@ -288,12 +310,13 @@ static const struct net_device_ops br_netdev_ops = {
 	.ndo_open		 = br_dev_open,
 	.ndo_stop		 = br_dev_stop,
 	.ndo_start_xmit		 = br_dev_xmit,
-	.ndo_get_stats		 = br_get_stats,
+	.ndo_get_stats64	 = br_get_stats64,
 	.ndo_set_mac_address	 = br_set_mac_address,
 	.ndo_set_multicast_list	 = br_dev_set_multicast_list,
 	.ndo_change_mtu		 = br_change_mtu,
 	.ndo_do_ioctl		 = br_dev_ioctl,
 #ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_netpoll_setup	 = br_netpoll_setup,
 	.ndo_netpoll_cleanup	 = br_netpoll_cleanup,
 	.ndo_poll_controller	 = br_poll_controller,
 #endif
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 26637439965b..90512ccfd3e9 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -128,7 +128,7 @@ void br_fdb_cleanup(unsigned long _data)
 {
 	struct net_bridge *br = (struct net_bridge *)_data;
 	unsigned long delay = hold_time(br);
-	unsigned long next_timer = jiffies + br->forward_delay;
+	unsigned long next_timer = jiffies + br->ageing_time;
 	int i;
 
 	spin_lock_bh(&br->hash_lock);
@@ -149,9 +149,7 @@ void br_fdb_cleanup(unsigned long _data)
 	}
 	spin_unlock_bh(&br->hash_lock);
 
-	/* Add HZ/4 to ensure we round the jiffies upwards to be after the next
-	 * timer, otherwise we might round down and will have no-op run. */
-	mod_timer(&br->gc_timer, round_jiffies(next_timer + HZ/4));
+	mod_timer(&br->gc_timer, round_jiffies_up(next_timer));
 }
 
 /* Completely flush all dynamic entries in forwarding database.*/
@@ -216,7 +214,7 @@ void br_fdb_delete_by_port(struct net_bridge *br,
 	spin_unlock_bh(&br->hash_lock);
 }
 
-/* No locking or refcounting, assumes caller has no preempt (rcu_read_lock) */
+/* No locking or refcounting, assumes caller has rcu_read_lock */
 struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
 					  const unsigned char *addr)
 {
@@ -242,11 +240,11 @@ int br_fdb_test_addr(struct net_device *dev, unsigned char *addr)
 	struct net_bridge_fdb_entry *fdb;
 	int ret;
 
-	if (!dev->br_port)
+	if (!br_port_exists(dev))
 		return 0;
 
 	rcu_read_lock();
-	fdb = __br_fdb_get(dev->br_port->br, addr);
+	fdb = __br_fdb_get(br_port_get_rcu(dev)->br, addr);
 	ret = fdb && fdb->dst->dev != dev &&
 		fdb->dst->state == BR_STATE_FORWARDING;
 	rcu_read_unlock();
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index a98ef1393097..cbfe87f0f34a 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -50,14 +50,7 @@ int br_dev_queue_push_xmit(struct sk_buff *skb)
 			kfree_skb(skb);
 		else {
 			skb_push(skb, ETH_HLEN);
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-			if (unlikely(skb->dev->priv_flags & IFF_IN_NETPOLL)) {
-				netpoll_send_skb(skb->dev->npinfo->netpoll, skb);
-				skb->dev->priv_flags &= ~IFF_IN_NETPOLL;
-			} else
-#endif
-				dev_queue_xmit(skb);
+			dev_queue_xmit(skb);
 		}
 	}
 
@@ -73,23 +66,20 @@ int br_forward_finish(struct sk_buff *skb)
 
 static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb)
 {
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	struct net_bridge *br = to->br;
-	if (unlikely(br->dev->priv_flags & IFF_IN_NETPOLL)) {
-		struct netpoll *np;
-		to->dev->npinfo = skb->dev->npinfo;
-		np = skb->dev->npinfo->netpoll;
-		np->real_dev = np->dev = to->dev;
-		to->dev->priv_flags |= IFF_IN_NETPOLL;
-	}
-#endif
 	skb->dev = to->dev;
+
+	if (unlikely(netpoll_tx_running(to->dev))) {
+		if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb))
+			kfree_skb(skb);
+		else {
+			skb_push(skb, ETH_HLEN);
+			br_netpoll_send_skb(to, skb);
+		}
+		return;
+	}
+
 	NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
 		br_forward_finish);
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	if (skb->dev->npinfo)
-		skb->dev->npinfo->netpoll->dev = br->dev;
-#endif
 }
 
 static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb)
@@ -140,10 +130,10 @@ static int deliver_clone(const struct net_bridge_port *prev,
 			 void (*__packet_hook)(const struct net_bridge_port *p,
 					       struct sk_buff *skb))
 {
+	struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;
+
 	skb = skb_clone(skb, GFP_ATOMIC);
 	if (!skb) {
-		struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;
-
 		dev->stats.tx_dropped++;
 		return -ENOMEM;
 	}
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 18b245e2c00e..c03d2c3ff03e 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -147,14 +147,17 @@ static void del_nbp(struct net_bridge_port *p)
 
 	list_del_rcu(&p->list);
 
-	rcu_assign_pointer(dev->br_port, NULL);
+	dev->priv_flags &= ~IFF_BRIDGE_PORT;
+
+	netdev_rx_handler_unregister(dev);
 
 	br_multicast_del_port(p);
 
 	kobject_uevent(&p->kobj, KOBJ_REMOVE);
 	kobject_del(&p->kobj);
 
-	br_netpoll_disable(br, dev);
+	br_netpoll_disable(p);
+
 	call_rcu(&p->rcu, destroy_nbp_rcu);
 }
 
@@ -167,8 +170,6 @@ static void del_br(struct net_bridge *br, struct list_head *head)
 		del_nbp(p);
 	}
 
-	br_netpoll_cleanup(br->dev);
-
 	del_timer_sync(&br->gc_timer);
 
 	br_sysfs_delbr(br->dev);
@@ -400,7 +401,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 		return -ELOOP;
 
 	/* Device is already being bridged */
-	if (dev->br_port != NULL)
+	if (br_port_exists(dev))
 		return -EBUSY;
 
 	/* No bridging devices that dislike that (e.g. wireless) */
@@ -428,7 +429,15 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 	if (err)
 		goto err2;
 
-	rcu_assign_pointer(dev->br_port, p);
+	if (br_netpoll_info(br) && ((err = br_netpoll_enable(p))))
+		goto err3;
+
+	err = netdev_rx_handler_register(dev, br_handle_frame, p);
+	if (err)
+		goto err3;
+
+	dev->priv_flags |= IFF_BRIDGE_PORT;
+
 	dev_disable_lro(dev);
 
 	list_add_rcu(&p->list, &br->port_list);
@@ -448,9 +457,9 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 
 	kobject_uevent(&p->kobj, KOBJ_ADD);
 
-	br_netpoll_enable(br, dev);
-
 	return 0;
+err3:
+	sysfs_remove_link(br->ifobj, p->dev->name);
 err2:
 	br_fdb_delete_by_port(br, p, 1);
 err1:
@@ -467,9 +476,13 @@ put_back:
 /* called with RTNL */
 int br_del_if(struct net_bridge *br, struct net_device *dev)
 {
-	struct net_bridge_port *p = dev->br_port;
+	struct net_bridge_port *p;
+
+	if (!br_port_exists(dev))
+		return -EINVAL;
 
-	if (!p || p->br != br)
+	p = br_port_get(dev);
+	if (p->br != br)
 		return -EINVAL;
 
 	del_nbp(p);
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index d36e700f7a26..826cd5221536 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -27,8 +27,10 @@ static int br_pass_frame_up(struct sk_buff *skb)
 	struct net_bridge *br = netdev_priv(brdev);
 	struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
 
+	u64_stats_update_begin(&brstats->syncp);
 	brstats->rx_packets++;
 	brstats->rx_bytes += skb->len;
+	u64_stats_update_end(&brstats->syncp);
 
 	indev = skb->dev;
 	skb->dev = brdev;
@@ -37,11 +39,11 @@ static int br_pass_frame_up(struct sk_buff *skb)
 		       netif_receive_skb);
 }
 
-/* note: already called with rcu_read_lock (preempt_disabled) */
+/* note: already called with rcu_read_lock */
 int br_handle_frame_finish(struct sk_buff *skb)
 {
 	const unsigned char *dest = eth_hdr(skb)->h_dest;
-	struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
+	struct net_bridge_port *p = br_port_get_rcu(skb->dev);
 	struct net_bridge *br;
 	struct net_bridge_fdb_entry *dst;
 	struct net_bridge_mdb_entry *mdst;
@@ -108,13 +110,12 @@ drop:
 	goto out;
 }
 
-/* note: already called with rcu_read_lock (preempt_disabled) */
+/* note: already called with rcu_read_lock */
 static int br_handle_local_finish(struct sk_buff *skb)
 {
-	struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
+	struct net_bridge_port *p = br_port_get_rcu(skb->dev);
 
-	if (p)
-		br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
+	br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
 	return 0;	 /* process further */
 }
 
@@ -131,15 +132,18 @@ static inline int is_link_local(const unsigned char *dest)
 }
 
 /*
- * Called via br_handle_frame_hook.
  * Return NULL if skb is handled
- * note: already called with rcu_read_lock (preempt_disabled)
+ * note: already called with rcu_read_lock
  */
-struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
+struct sk_buff *br_handle_frame(struct sk_buff *skb)
 {
+	struct net_bridge_port *p;
 	const unsigned char *dest = eth_hdr(skb)->h_dest;
 	int (*rhook)(struct sk_buff *skb);
 
+	if (skb->pkt_type == PACKET_LOOPBACK)
+		return skb;
+
 	if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
 		goto drop;
 
@@ -147,6 +151,8 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
 	if (!skb)
 		return NULL;
 
+	p = br_port_get_rcu(skb->dev);
+
 	if (unlikely(is_link_local(dest))) {
 		/* Pause frames shouldn't be passed up by driver anyway */
 		if (skb->protocol == htons(ETH_P_PAUSE))
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 9d21d98ae5fa..eb5b256ffc88 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -99,6 +99,15 @@ static struct net_bridge_mdb_entry *__br_mdb_ip_get(
 	return NULL;
 }
 
+static struct net_bridge_mdb_entry *br_mdb_ip_get(
+	struct net_bridge_mdb_htable *mdb, struct br_ip *dst)
+{
+	if (!mdb)
+		return NULL;
+
+	return __br_mdb_ip_get(mdb, dst, br_ip_hash(mdb, dst));
+}
+
 static struct net_bridge_mdb_entry *br_mdb_ip4_get(
 	struct net_bridge_mdb_htable *mdb, __be32 dst)
 {
@@ -107,7 +116,7 @@ static struct net_bridge_mdb_entry *br_mdb_ip4_get(
 	br_dst.u.ip4 = dst;
 	br_dst.proto = htons(ETH_P_IP);
 
-	return __br_mdb_ip_get(mdb, &br_dst, __br_ip4_hash(mdb, dst));
+	return br_mdb_ip_get(mdb, &br_dst);
 }
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
@@ -119,23 +128,17 @@ static struct net_bridge_mdb_entry *br_mdb_ip6_get(
 	ipv6_addr_copy(&br_dst.u.ip6, dst);
 	br_dst.proto = htons(ETH_P_IPV6);
 
-	return __br_mdb_ip_get(mdb, &br_dst, __br_ip6_hash(mdb, dst));
+	return br_mdb_ip_get(mdb, &br_dst);
 }
 #endif
 
-static struct net_bridge_mdb_entry *br_mdb_ip_get(
-	struct net_bridge_mdb_htable *mdb, struct br_ip *dst)
-{
-	return __br_mdb_ip_get(mdb, dst, br_ip_hash(mdb, dst));
-}
-
 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 					struct sk_buff *skb)
 {
 	struct net_bridge_mdb_htable *mdb = br->mdb;
 	struct br_ip ip;
 
-	if (!mdb || br->multicast_disabled)
+	if (br->multicast_disabled)
 		return NULL;
 
 	if (BR_INPUT_SKB_CB(skb)->igmp)
@@ -1432,7 +1435,7 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
 	struct icmp6hdr *icmp6h;
 	u8 nexthdr;
 	unsigned len;
-	unsigned offset;
+	int offset;
 	int err;
 
 	if (!pskb_may_pull(skb, sizeof(*ip6h)))
@@ -1725,13 +1728,9 @@ unlock:
 int br_multicast_toggle(struct net_bridge *br, unsigned long val)
 {
 	struct net_bridge_port *port;
-	int err = -ENOENT;
+	int err = 0;
 
 	spin_lock(&br->multicast_lock);
-	if (!netif_running(br->dev))
-		goto unlock;
-
-	err = 0;
 	if (br->multicast_disabled == !val)
 		goto unlock;
 
@@ -1739,6 +1738,9 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
 	if (br->multicast_disabled)
 		goto unlock;
 
+	if (!netif_running(br->dev))
+		goto unlock;
+
 	if (br->mdb) {
 		if (br->mdb->old) {
 			err = -EEXIST;
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 44420992f72f..2c911c0759c2 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -55,6 +55,9 @@ static int brnf_call_arptables __read_mostly = 1;
 static int brnf_filter_vlan_tagged __read_mostly = 0;
 static int brnf_filter_pppoe_tagged __read_mostly = 0;
 #else
+#define brnf_call_iptables 1
+#define brnf_call_ip6tables 1
+#define brnf_call_arptables 1
 #define brnf_filter_vlan_tagged 0
 #define brnf_filter_pppoe_tagged 0
 #endif
@@ -117,26 +120,27 @@ void br_netfilter_rtable_init(struct net_bridge *br)
 {
 	struct rtable *rt = &br->fake_rtable;
 
-	atomic_set(&rt->u.dst.__refcnt, 1);
-	rt->u.dst.dev = br->dev;
-	rt->u.dst.path = &rt->u.dst;
-	rt->u.dst.metrics[RTAX_MTU - 1] = 1500;
-	rt->u.dst.flags	= DST_NOXFRM;
-	rt->u.dst.ops = &fake_dst_ops;
+	atomic_set(&rt->dst.__refcnt, 1);
+	rt->dst.dev = br->dev;
+	rt->dst.path = &rt->dst;
+	rt->dst.metrics[RTAX_MTU - 1] = 1500;
+	rt->dst.flags	= DST_NOXFRM;
+	rt->dst.ops = &fake_dst_ops;
 }
 
 static inline struct rtable *bridge_parent_rtable(const struct net_device *dev)
 {
-	struct net_bridge_port *port = rcu_dereference(dev->br_port);
-
-	return port ? &port->br->fake_rtable : NULL;
+	if (!br_port_exists(dev))
+		return NULL;
+	return &br_port_get_rcu(dev)->br->fake_rtable;
 }
 
 static inline struct net_device *bridge_parent(const struct net_device *dev)
 {
-	struct net_bridge_port *port = rcu_dereference(dev->br_port);
+	if (!br_port_exists(dev))
+		return NULL;
 
-	return port ? port->br->dev : NULL;
+	return br_port_get_rcu(dev)->br->dev;
 }
 
 static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
@@ -244,8 +248,7 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
 		kfree_skb(skb);
 		return 0;
 	}
-	dst_hold(&rt->u.dst);
-	skb_dst_set(skb, &rt->u.dst);
+	skb_dst_set_noref(skb, &rt->dst);
 
 	skb->dev = nf_bridge->physindev;
 	nf_bridge_update_protocol(skb);
@@ -396,8 +399,7 @@ bridged_dnat:
 			kfree_skb(skb);
 			return 0;
 		}
-		dst_hold(&rt->u.dst);
-		skb_dst_set(skb, &rt->u.dst);
+		skb_dst_set_noref(skb, &rt->dst);
 	}
 
 	skb->dev = nf_bridge->physindev;
@@ -545,25 +547,30 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
+	struct net_bridge_port *p;
+	struct net_bridge *br;
 	struct iphdr *iph;
 	__u32 len = nf_bridge_encap_header_len(skb);
 
 	if (unlikely(!pskb_may_pull(skb, len)))
 		goto out;
 
+	p = br_port_get_rcu(in);
+	if (p == NULL)
+		goto out;
+	br = p->br;
+
 	if (skb->protocol == htons(ETH_P_IPV6) || IS_VLAN_IPV6(skb) ||
 	    IS_PPPOE_IPV6(skb)) {
-#ifdef CONFIG_SYSCTL
-		if (!brnf_call_ip6tables)
+		if (!brnf_call_ip6tables && !br->nf_call_ip6tables)
 			return NF_ACCEPT;
-#endif
+
 		nf_bridge_pull_encap_header_rcsum(skb);
 		return br_nf_pre_routing_ipv6(hook, skb, in, out, okfn);
 	}
-#ifdef CONFIG_SYSCTL
-	if (!brnf_call_iptables)
+
+	if (!brnf_call_iptables && !br->nf_call_iptables)
 		return NF_ACCEPT;
-#endif
 
 	if (skb->protocol != htons(ETH_P_IP) && !IS_VLAN_IP(skb) &&
 	    !IS_PPPOE_IP(skb))
@@ -591,6 +598,9 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
 
 	pskb_trim_rcsum(skb, len);
 
+	/* BUG: Should really parse the IP options here. */
+	memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));
+
 	nf_bridge_put(skb->nf_bridge);
 	if (!nf_bridge_alloc(skb))
 		return NF_DROP;
@@ -716,12 +726,17 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff *skb,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
+	struct net_bridge_port *p;
+	struct net_bridge *br;
 	struct net_device **d = (struct net_device **)(skb->cb);
 
-#ifdef CONFIG_SYSCTL
-	if (!brnf_call_arptables)
+	p = br_port_get_rcu(out);
+	if (p == NULL)
+		return NF_ACCEPT;
+	br = p->br;
+
+	if (!brnf_call_arptables && !br->nf_call_arptables)
 		return NF_ACCEPT;
-#endif
 
 	if (skb->protocol != htons(ETH_P_ARP)) {
 		if (!IS_VLAN_ARP(skb))
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index fe0a79018ab2..4a6a378c84e3 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -120,10 +120,11 @@ static int br_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 	idx = 0;
 	for_each_netdev(net, dev) {
 		/* not a bridge port */
-		if (dev->br_port == NULL || idx < cb->args[0])
+		if (!br_port_exists(dev) || idx < cb->args[0])
 			goto skip;
 
-		if (br_fill_ifinfo(skb, dev->br_port, NETLINK_CB(cb->skb).pid,
+		if (br_fill_ifinfo(skb, br_port_get(dev),
+				   NETLINK_CB(cb->skb).pid,
 				   cb->nlh->nlmsg_seq, RTM_NEWLINK,
 				   NLM_F_MULTI) < 0)
 			break;
@@ -168,9 +169,9 @@ static int br_rtm_setlink(struct sk_buff *skb,  struct nlmsghdr *nlh, void *arg)
 	if (!dev)
 		return -ENODEV;
 
-	p = dev->br_port;
-	if (!p)
+	if (!br_port_exists(dev))
 		return -EINVAL;
+	p = br_port_get(dev);
 
 	/* if kernel STP is running, don't allow changes */
 	if (p->br->stp_enabled == BR_KERNEL_STP)
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
index 717e1fd6133c..404d4e14c6a7 100644
--- a/net/bridge/br_notify.c
+++ b/net/bridge/br_notify.c
@@ -32,14 +32,15 @@ struct notifier_block br_device_notifier = {
 static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
 {
 	struct net_device *dev = ptr;
-	struct net_bridge_port *p = dev->br_port;
+	struct net_bridge_port *p = br_port_get(dev);
 	struct net_bridge *br;
 	int err;
 
 	/* not a port of a bridge */
-	if (p == NULL)
+	if (!br_port_exists(dev))
 		return NOTIFY_DONE;
 
+	p = br_port_get(dev);
 	br = p->br;
 
 	switch (event) {
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 0f4a74bc6a9b..75c90edaf7db 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -15,6 +15,8 @@
 
 #include <linux/netdevice.h>
 #include <linux/if_bridge.h>
+#include <linux/netpoll.h>
+#include <linux/u64_stats_sync.h>
 #include <net/route.h>
 
 #define BR_HASH_BITS 8
@@ -143,13 +145,23 @@ struct net_bridge_port
 #ifdef CONFIG_SYSFS
 	char				sysfs_name[IFNAMSIZ];
 #endif
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	struct netpoll			*np;
+#endif
 };
 
+#define br_port_get_rcu(dev) \
+	((struct net_bridge_port *) rcu_dereference(dev->rx_handler_data))
+#define br_port_get(dev) ((struct net_bridge_port *) dev->rx_handler_data)
+#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
+
 struct br_cpu_netstats {
-	unsigned long	rx_packets;
-	unsigned long	rx_bytes;
-	unsigned long	tx_packets;
-	unsigned long	tx_bytes;
+	u64			rx_packets;
+	u64			rx_bytes;
+	u64			tx_packets;
+	u64			tx_bytes;
+	struct u64_stats_sync	syncp;
 };
 
 struct net_bridge
@@ -164,6 +176,9 @@ struct net_bridge
 	unsigned long			feature_mask;
 #ifdef CONFIG_BRIDGE_NETFILTER
 	struct rtable 			fake_rtable;
+	bool				nf_call_iptables;
+	bool				nf_call_ip6tables;
+	bool				nf_call_arptables;
 #endif
 	unsigned long			flags;
 #define BR_SET_MAC_ADDR		0x00000001
@@ -273,16 +288,41 @@ extern void br_dev_setup(struct net_device *dev);
 extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
 			       struct net_device *dev);
 #ifdef CONFIG_NET_POLL_CONTROLLER
-extern void br_netpoll_cleanup(struct net_device *dev);
-extern void br_netpoll_enable(struct net_bridge *br,
-			      struct net_device *dev);
-extern void br_netpoll_disable(struct net_bridge *br,
-			       struct net_device *dev);
+static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
+{
+	return br->dev->npinfo;
+}
+
+static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
+				       struct sk_buff *skb)
+{
+	struct netpoll *np = p->np;
+
+	if (np)
+		netpoll_send_skb(np, skb);
+}
+
+extern int br_netpoll_enable(struct net_bridge_port *p);
+extern void br_netpoll_disable(struct net_bridge_port *p);
 #else
-#define br_netpoll_cleanup(br)
-#define br_netpoll_enable(br, dev)
-#define br_netpoll_disable(br, dev)
+static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
+{
+	return NULL;
+}
+
+static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
+				       struct sk_buff *skb)
+{
+}
 
+static inline int br_netpoll_enable(struct net_bridge_port *p)
+{
+	return 0;
+}
+
+static inline void br_netpoll_disable(struct net_bridge_port *p)
+{
+}
 #endif
 
 /* br_fdb.c */
@@ -331,8 +371,7 @@ extern void br_features_recompute(struct net_bridge *br);
 
 /* br_input.c */
 extern int br_handle_frame_finish(struct sk_buff *skb);
-extern struct sk_buff *br_handle_frame(struct net_bridge_port *p,
-				       struct sk_buff *skb);
+extern struct sk_buff *br_handle_frame(struct sk_buff *skb);
 
 /* br_ioctl.c */
 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 217bd225a42f..35cf27087b56 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -131,18 +131,19 @@ void br_send_tcn_bpdu(struct net_bridge_port *p)
 /*
  * Called from llc.
  *
- * NO locks, but rcu_read_lock (preempt_disabled)
+ * NO locks, but rcu_read_lock
  */
 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
 		struct net_device *dev)
 {
 	const unsigned char *dest = eth_hdr(skb)->h_dest;
-	struct net_bridge_port *p = rcu_dereference(dev->br_port);
+	struct net_bridge_port *p;
 	struct net_bridge *br;
 	const unsigned char *buf;
 
-	if (!p)
+	if (!br_port_exists(dev))
 		goto err;
+	p = br_port_get_rcu(dev);
 
 	if (!pskb_may_pull(skb, 4))
 		goto err;
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 486b8f3861d2..5c1e5559ebba 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -611,6 +611,73 @@ static DEVICE_ATTR(multicast_startup_query_interval, S_IRUGO | S_IWUSR,
 		   show_multicast_startup_query_interval,
 		   store_multicast_startup_query_interval);
 #endif
+#ifdef CONFIG_BRIDGE_NETFILTER
+static ssize_t show_nf_call_iptables(
+	struct device *d, struct device_attribute *attr, char *buf)
+{
+	struct net_bridge *br = to_bridge(d);
+	return sprintf(buf, "%u\n", br->nf_call_iptables);
+}
+
+static int set_nf_call_iptables(struct net_bridge *br, unsigned long val)
+{
+	br->nf_call_iptables = val ? true : false;
+	return 0;
+}
+
+static ssize_t store_nf_call_iptables(
+	struct device *d, struct device_attribute *attr, const char *buf,
+	size_t len)
+{
+	return store_bridge_parm(d, buf, len, set_nf_call_iptables);
+}
+static DEVICE_ATTR(nf_call_iptables, S_IRUGO | S_IWUSR,
+		   show_nf_call_iptables, store_nf_call_iptables);
+
+static ssize_t show_nf_call_ip6tables(
+	struct device *d, struct device_attribute *attr, char *buf)
+{
+	struct net_bridge *br = to_bridge(d);
+	return sprintf(buf, "%u\n", br->nf_call_ip6tables);
+}
+
+static int set_nf_call_ip6tables(struct net_bridge *br, unsigned long val)
+{
+	br->nf_call_ip6tables = val ? true : false;
+	return 0;
+}
+
+static ssize_t store_nf_call_ip6tables(
+	struct device *d, struct device_attribute *attr, const char *buf,
+	size_t len)
+{
+	return store_bridge_parm(d, buf, len, set_nf_call_ip6tables);
+}
+static DEVICE_ATTR(nf_call_ip6tables, S_IRUGO | S_IWUSR,
+		   show_nf_call_ip6tables, store_nf_call_ip6tables);
+
+static ssize_t show_nf_call_arptables(
+	struct device *d, struct device_attribute *attr, char *buf)
+{
+	struct net_bridge *br = to_bridge(d);
+	return sprintf(buf, "%u\n", br->nf_call_arptables);
+}
+
+static int set_nf_call_arptables(struct net_bridge *br, unsigned long val)
+{
+	br->nf_call_arptables = val ? true : false;
+	return 0;
+}
+
+static ssize_t store_nf_call_arptables(
+	struct device *d, struct device_attribute *attr, const char *buf,
+	size_t len)
+{
+	return store_bridge_parm(d, buf, len, set_nf_call_arptables);
+}
+static DEVICE_ATTR(nf_call_arptables, S_IRUGO | S_IWUSR,
+		   show_nf_call_arptables, store_nf_call_arptables);
+#endif
 
 static struct attribute *bridge_attrs[] = {
 	&dev_attr_forward_delay.attr,
@@ -645,6 +712,11 @@ static struct attribute *bridge_attrs[] = {
 	&dev_attr_multicast_query_response_interval.attr,
 	&dev_attr_multicast_startup_query_interval.attr,
 #endif
+#ifdef CONFIG_BRIDGE_NETFILTER
+	&dev_attr_nf_call_iptables.attr,
+	&dev_attr_nf_call_ip6tables.attr,
+	&dev_attr_nf_call_arptables.attr,
+#endif
 	NULL
 };
 
diff --git a/net/bridge/netfilter/ebt_redirect.c b/net/bridge/netfilter/ebt_redirect.c
index 9e19166ba453..46624bb6d9be 100644
--- a/net/bridge/netfilter/ebt_redirect.c
+++ b/net/bridge/netfilter/ebt_redirect.c
@@ -24,8 +24,9 @@ ebt_redirect_tg(struct sk_buff *skb, const struct xt_action_param *par)
 		return EBT_DROP;
 
 	if (par->hooknum != NF_BR_BROUTING)
+		/* rcu_read_lock()ed by nf_hook_slow */
 		memcpy(eth_hdr(skb)->h_dest,
-		       par->in->br_port->br->dev->dev_addr, ETH_ALEN);
+		       br_port_get_rcu(par->in)->br->dev->dev_addr, ETH_ALEN);
 	else
 		memcpy(eth_hdr(skb)->h_dest, par->in->dev_addr, ETH_ALEN);
 	skb->pkt_type = PACKET_HOST;
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index ae3c7cef1484..26377e96fa1c 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -177,8 +177,9 @@ static void ebt_ulog_packet(unsigned int hooknr, const struct sk_buff *skb,
 	if (in) {
 		strcpy(pm->physindev, in->name);
 		/* If in isn't a bridge, then physindev==indev */
-		if (in->br_port)
-			strcpy(pm->indev, in->br_port->br->dev->name);
+		if (br_port_exists(in))
+			/* rcu_read_lock()ed by nf_hook_slow */
+			strcpy(pm->indev, br_port_get_rcu(in)->br->dev->name);
 		else
 			strcpy(pm->indev, in->name);
 	} else
@@ -187,7 +188,8 @@ static void ebt_ulog_packet(unsigned int hooknr, const struct sk_buff *skb,
 	if (out) {
 		/* If out exists, then out is a bridge port */
 		strcpy(pm->physoutdev, out->name);
-		strcpy(pm->outdev, out->br_port->br->dev->name);
+		/* rcu_read_lock()ed by nf_hook_slow */
+		strcpy(pm->outdev, br_port_get_rcu(out)->br->dev->name);
 	} else
 		pm->outdev[0] = pm->physoutdev[0] = '\0';
 
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 59ca00e40dec..bcc102e3be4d 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -140,11 +140,14 @@ ebt_basic_match(const struct ebt_entry *e, const struct ethhdr *h,
 		return 1;
 	if (FWINV2(ebt_dev_check(e->out, out), EBT_IOUT))
 		return 1;
-	if ((!in || !in->br_port) ? 0 : FWINV2(ebt_dev_check(
-	   e->logical_in, in->br_port->br->dev), EBT_ILOGICALIN))
+	/* rcu_read_lock()ed by nf_hook_slow */
+	if (in && br_port_exists(in) &&
+	    FWINV2(ebt_dev_check(e->logical_in, br_port_get_rcu(in)->br->dev),
+		   EBT_ILOGICALIN))
 		return 1;
-	if ((!out || !out->br_port) ? 0 : FWINV2(ebt_dev_check(
-	   e->logical_out, out->br_port->br->dev), EBT_ILOGICALOUT))
+	if (out && br_port_exists(out) &&
+	    FWINV2(ebt_dev_check(e->logical_out, br_port_get_rcu(out)->br->dev),
+		   EBT_ILOGICALOUT))
 		return 1;
 
 	if (e->bitmask & EBT_SOURCEMAC) {