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: (1287 commits)
  icmp: Fix regression in nexthop resolution during replies.
  net: Fix ppc64 BPF JIT dependencies.
  acenic: include NET_SKB_PAD headroom to incoming skbs
  ixgbe: convert to ndo_fix_features
  ixgbe: only enable WoL for magic packet by default
  ixgbe: remove ifdef check for non-existent define
  ixgbe: Pass staterr instead of re-reading status and error bits from descriptor
  ixgbe: Move interrupt related values out of ring and into q_vector
  ixgbe: add structure for containing RX/TX rings to q_vector
  ixgbe: inline the ixgbe_maybe_stop_tx function
  ixgbe: Update ATR to use recorded TX queues instead of CPU for routing
  igb: Fix for DH89xxCC near end loopback test
  e1000: always call e1000_check_for_link() on e1000_ce4100 MACs.
  netxen: add fw version compatibility check
  be2net: request native mode each time the card is reset
  ipv4: Constrain UFO fragment sizes to multiples of 8 bytes
  virtio_net: Fix panic in virtnet_remove
  ipv6: make fragment identifications less predictable
  ipv6: unshare inetpeers
  can: make function can_get_bittiming static
  ...

1 files changed, 30 insertions, 1 deletions

diff --git a/include/net/arp.h b/include/net/arp.h
index 91f0568a04e..4979af8b155 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -8,6 +8,36 @@
 
 extern struct neigh_table arp_tbl;
 
+static inline u32 arp_hashfn(u32 key, const struct net_device *dev, u32 hash_rnd)
+{
+	u32 val = key ^ dev->ifindex;
+
+	return val * hash_rnd;
+}
+
+static inline struct neighbour *__ipv4_neigh_lookup(struct neigh_table *tbl, struct net_device *dev, u32 key)
+{
+	struct neigh_hash_table *nht;
+	struct neighbour *n;
+	u32 hash_val;
+
+	rcu_read_lock_bh();
+	nht = rcu_dereference_bh(tbl->nht);
+	hash_val = arp_hashfn(key, dev, nht->hash_rnd) >> (32 - nht->hash_shift);
+	for (n = rcu_dereference_bh(nht->hash_buckets[hash_val]);
+	     n != NULL;
+	     n = rcu_dereference_bh(n->next)) {
+		if (n->dev == dev && *(u32 *)n->primary_key == key) {
+			if (!atomic_inc_not_zero(&n->refcnt))
+				n = NULL;
+			break;
+		}
+	}
+	rcu_read_unlock_bh();
+
+	return n;
+}
+
 extern void	arp_init(void);
 extern int	arp_find(unsigned char *haddr, struct sk_buff *skb);
 extern int	arp_ioctl(struct net *net, unsigned int cmd, void __user *arg);
@@ -15,7 +45,6 @@ extern void     arp_send(int type, int ptype, __be32 dest_ip,
 			 struct net_device *dev, __be32 src_ip,
 			 const unsigned char *dest_hw,
 			 const unsigned char *src_hw, const unsigned char *th);
-extern int	arp_bind_neighbour(struct dst_entry *dst);
 extern int	arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir);
 extern void	arp_ifdown(struct net_device *dev);