From 23542618deb77cfed312842fe8c41ed19fb16470 Mon Sep 17 00:00:00 2001 From: KOVACS Krisztian Date: Tue, 7 Oct 2008 12:41:01 -0700 Subject: inet: Don't lookup the socket if there's a socket attached to the skb Use the socket cached in the skb if it's present. Signed-off-by: KOVACS Krisztian Acked-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/ipv4/udp.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'net/ipv4/udp.c') diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index c7a90b5..822c9de 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -306,11 +306,15 @@ static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb, __be16 sport, __be16 dport, struct hlist_head udptable[]) { + struct sock *sk; const struct iphdr *iph = ip_hdr(skb); - return __udp4_lib_lookup(dev_net(skb->dst->dev), iph->saddr, sport, - iph->daddr, dport, inet_iif(skb), - udptable); + if (unlikely(sk = skb_steal_sock(skb))) + return sk; + else + return __udp4_lib_lookup(dev_net(skb->dst->dev), iph->saddr, sport, + iph->daddr, dport, inet_iif(skb), + udptable); } struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, -- cgit v1.1