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[UDP]: Make use of inet_iif() when doing socket lookups.

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UDP currently uses skb->dev->ifindex which may provide the wrong
information when the socket bound to a specific interface.
This patch makes inet_iif() accessible to UDP and makes UDP use it.

The scenario we are trying to fix is when a client is running on
the same system and the server and both client and server bind to
a non-loopback device.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich
2007-10-25 18:54:46 -07:00
committed by David S. Miller
parent 41fb285430
commit fee9dee730
3 changed files with 8 additions and 7 deletions
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net/ipv4/udp.c
+1 -1
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@@ -1152,7 +1152,7 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
return __udp4_lib_mcast_deliver(skb, uh, saddr, daddr, udptable);
sk = __udp4_lib_lookup(saddr, uh->source, daddr, uh->dest,
skb->dev->ifindex, udptable );
inet_iif(skb), udptable);
if (sk != NULL) {
int ret = udp_queue_rcv_skb(sk, skb);