Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits)
  dp83640: free packet queues on remove
  dp83640: use proper function to free transmit time stamping packets
  ipv6: Do not use routes from locally generated RAs
  |PATCH net-next] tg3: add tx_dropped counter
  be2net: don't create multiple RX/TX rings in multi channel mode
  be2net: don't create multiple TXQs in BE2
  be2net: refactor VF setup/teardown code into be_vf_setup/clear()
  be2net: add vlan/rx-mode/flow-control config to be_setup()
  net_sched: cls_flow: use skb_header_pointer()
  ipv4: avoid useless call of the function check_peer_pmtu
  TCP: remove TCP_DEBUG
  net: Fix driver name for mdio-gpio.c
  ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT
  rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces
  ipv4: fix ipsec forward performance regression
  jme: fix irq storm after suspend/resume
  route: fix ICMP redirect validation
  net: hold sock reference while processing tx timestamps
  tcp: md5: add more const attributes
  Add ethtool -g support to virtio_net
  ...

Fix up conflicts in:
 - drivers/net/Kconfig:
	The split-up generated a trivial conflict with removal of a
	stale reference to Documentation/networking/net-modules.txt.
	Remove it from the new location instead.
 - fs/sysfs/dir.c:
	Fairly nasty conflicts with the sysfs rb-tree usage, conflicting
	with Eric Biederman's changes for tagged directories.

1 files changed, 30 insertions, 14 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 1334d7e56f02..909ecb3c2a33 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -844,6 +844,19 @@ static void neigh_invalidate(struct neighbour *neigh)
 	skb_queue_purge(&neigh->arp_queue);
 }
 
+static void neigh_probe(struct neighbour *neigh)
+	__releases(neigh->lock)
+{
+	struct sk_buff *skb = skb_peek(&neigh->arp_queue);
+	/* keep skb alive even if arp_queue overflows */
+	if (skb)
+		skb = skb_copy(skb, GFP_ATOMIC);
+	write_unlock(&neigh->lock);
+	neigh->ops->solicit(neigh, skb);
+	atomic_inc(&neigh->probes);
+	kfree_skb(skb);
+}
+
 /* Called when a timer expires for a neighbour entry. */
 
 static void neigh_timer_handler(unsigned long arg)
@@ -920,14 +933,7 @@ static void neigh_timer_handler(unsigned long arg)
 			neigh_hold(neigh);
 	}
 	if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) {
-		struct sk_buff *skb = skb_peek(&neigh->arp_queue);
-		/* keep skb alive even if arp_queue overflows */
-		if (skb)
-			skb = skb_copy(skb, GFP_ATOMIC);
-		write_unlock(&neigh->lock);
-		neigh->ops->solicit(neigh, skb);
-		atomic_inc(&neigh->probes);
-		kfree_skb(skb);
+		neigh_probe(neigh);
 	} else {
 out:
 		write_unlock(&neigh->lock);
@@ -942,7 +948,7 @@ out:
 int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 {
 	int rc;
-	unsigned long now;
+	bool immediate_probe = false;
 
 	write_lock_bh(&neigh->lock);
 
@@ -950,14 +956,16 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 	if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
 		goto out_unlock_bh;
 
-	now = jiffies;
-
 	if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
 		if (neigh->parms->mcast_probes + neigh->parms->app_probes) {
+			unsigned long next, now = jiffies;
+
 			atomic_set(&neigh->probes, neigh->parms->ucast_probes);
 			neigh->nud_state     = NUD_INCOMPLETE;
-			neigh->updated = jiffies;
-			neigh_add_timer(neigh, now + 1);
+			neigh->updated = now;
+			next = now + max(neigh->parms->retrans_time, HZ/2);
+			neigh_add_timer(neigh, next);
+			immediate_probe = true;
 		} else {
 			neigh->nud_state = NUD_FAILED;
 			neigh->updated = jiffies;
@@ -989,7 +997,11 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 		rc = 1;
 	}
 out_unlock_bh:
-	write_unlock_bh(&neigh->lock);
+	if (immediate_probe)
+		neigh_probe(neigh);
+	else
+		write_unlock(&neigh->lock);
+	local_bh_enable();
 	return rc;
 }
 EXPORT_SYMBOL(__neigh_event_send);
@@ -1156,10 +1168,14 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
 			struct dst_entry *dst = skb_dst(skb);
 			struct neighbour *n2, *n1 = neigh;
 			write_unlock_bh(&neigh->lock);
+
+			rcu_read_lock();
 			/* On shaper/eql skb->dst->neighbour != neigh :( */
 			if (dst && (n2 = dst_get_neighbour(dst)) != NULL)
 				n1 = n2;
 			n1->output(n1, skb);
+			rcu_read_unlock();
+
 			write_lock_bh(&neigh->lock);
 		}
 		skb_queue_purge(&neigh->arp_queue);