From 9cb429d692b341e972b12e6cd097364050ebbb26 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 24 Jul 2012 01:19:31 +0000 Subject: tcp: early_demux fixes 1) Remove a non needed pskb_may_pull() in tcp_v4_early_demux() and fix a potential bug if skb->head was reallocated (iph & th pointers were not reloaded) TCP stack will pull/check headers anyway. 2) must reload iph in ip_rcv_finish() after early_demux() call since skb->head might have changed. 3) skb->dev->ifindex can be now replaced by skb->skb_iif Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/ip_input.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/ipv4/ip_input.c') diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index 4ebc6feee250..93134b0eab0c 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -326,8 +326,11 @@ static int ip_rcv_finish(struct sk_buff *skb) rcu_read_lock(); ipprot = rcu_dereference(inet_protos[protocol]); - if (ipprot && ipprot->early_demux) + if (ipprot && ipprot->early_demux) { ipprot->early_demux(skb); + /* must reload iph, skb->head might have changed */ + iph = ip_hdr(skb); + } rcu_read_unlock(); } -- cgit v1.2.3-59-g8ed1b