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net: Abstract dst->neighbour accesses behind helpers.

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dst_{get,set}_neighbour()

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-07-17 23:09:49 -07:00
parent 9cbb7ecbcf
commit 69cce1d140
29 changed files with 199 additions and 139 deletions
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10
net/core/dst.c
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@@ -171,7 +171,7 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
dst_init_metrics(dst, dst_default_metrics, true);
dst->expires = 0UL;
dst->path = dst;
dst->neighbour = NULL;
dst->_neighbour = NULL;
#ifdef CONFIG_XFRM
dst->xfrm = NULL;
#endif
@@ -229,11 +229,11 @@ struct dst_entry *dst_destroy(struct dst_entry * dst)
smp_rmb();
again:
neigh = dst->neighbour;
neigh = dst->_neighbour;
child = dst->child;
if (neigh) {
dst->neighbour = NULL;
dst->_neighbour = NULL;
neigh_release(neigh);
}
@@ -363,8 +363,8 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
dst->dev = dev_net(dst->dev)->loopback_dev;
dev_hold(dst->dev);
dev_put(dev);
if (dst->neighbour && dst->neighbour->dev == dev) {
dst->neighbour->dev = dst->dev;
if (dst->_neighbour && dst->_neighbour->dev == dev) {
dst->_neighbour->dev = dst->dev;
dev_hold(dst->dev);
dev_put(dev);
}

7
net/core/neighbour.c
View File

@@ -1153,11 +1153,12 @@ 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);
/* 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(n1, skb);
write_lock_bh(&neigh->lock);
}