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neigh: Use neigh table index for neigh_packet_xmit

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Remove a little bit of unnecessary work when transmitting a packet with
neigh_packet_xmit.  Use the neighbour table index not the address family
as a parameter.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman
2015-03-07 16:25:56 -06:00
committed by David S. Miller
parent 7d5f41f276
commit b79bda3d38
3 changed files with 34 additions and 24 deletions
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22
net/core/neighbour.c
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@@ -2391,22 +2391,15 @@ void __neigh_for_each_release(struct neigh_table *tbl,
}
EXPORT_SYMBOL(__neigh_for_each_release);
int neigh_xmit(int family, struct net_device *dev,
int neigh_xmit(int index, struct net_device *dev,
const void *addr, struct sk_buff *skb)
{
int err;
if (family == AF_PACKET) {
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
addr, NULL, skb->len);
if (err < 0)
goto out_kfree_skb;
err = dev_queue_xmit(skb);
} else {
int err = -EAFNOSUPPORT;
if (likely(index < NEIGH_NR_TABLES)) {
struct neigh_table *tbl;
struct neighbour *neigh;
err = -ENETDOWN;
tbl = neigh_find_table(family);
tbl = neigh_tables[index];
if (!tbl)
goto out;
neigh = __neigh_lookup_noref(tbl, addr, dev);
@@ -2417,6 +2410,13 @@ int neigh_xmit(int family, struct net_device *dev,
goto out_kfree_skb;
err = neigh->output(neigh, skb);
}
else if (index == NEIGH_LINK_TABLE) {
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
addr, NULL, skb->len);
if (err < 0)
goto out_kfree_skb;
err = dev_queue_xmit(skb);
}
out:
return err;
out_kfree_skb: