diff options
Diffstat (limited to 'net/core/neighbour.c')
-rw-r--r-- | net/core/neighbour.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 16db887..96bb0a3 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -823,6 +823,8 @@ next_elt: write_unlock_bh(&tbl->lock); cond_resched(); write_lock_bh(&tbl->lock); + nht = rcu_dereference_protected(tbl->nht, + lockdep_is_held(&tbl->lock)); } /* Cycle through all hash buckets every base_reachable_time/2 ticks. * ARP entry timeouts range from 1/2 base_reachable_time to 3/2 @@ -1173,12 +1175,17 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, while (neigh->nud_state & NUD_VALID && (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) { - struct neighbour *n1 = neigh; + 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 (skb_dst(skb) && skb_dst(skb)->neighbour) - n1 = skb_dst(skb)->neighbour; + if (dst && (n2 = dst_get_neighbour(dst)) != NULL) + n1 = n2; n1->output(skb); + rcu_read_unlock(); + write_lock_bh(&neigh->lock); } skb_queue_purge(&neigh->arp_queue); @@ -1300,10 +1307,10 @@ EXPORT_SYMBOL(neigh_compat_output); int neigh_resolve_output(struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); - struct neighbour *neigh; + struct neighbour *neigh = dst_get_neighbour(dst); int rc = 0; - if (!dst || !(neigh = dst->neighbour)) + if (!dst) goto discard; __skb_pull(skb, skb_network_offset(skb)); @@ -1333,7 +1340,7 @@ out: return rc; discard: NEIGH_PRINTK1("neigh_resolve_output: dst=%p neigh=%p\n", - dst, dst ? dst->neighbour : NULL); + dst, neigh); out_kfree_skb: rc = -EINVAL; kfree_skb(skb); @@ -1347,7 +1354,7 @@ int neigh_connected_output(struct sk_buff *skb) { int err; struct dst_entry *dst = skb_dst(skb); - struct neighbour *neigh = dst->neighbour; + struct neighbour *neigh = dst_get_neighbour(dst); struct net_device *dev = neigh->dev; unsigned int seq; |