summaryrefslogtreecommitdiffstats
path: root/net/ipv4/tcp_ipv4.c
diff options
context:
space:
mode:
authorEric Dumazet <edumazet@google.com>2012-07-27 06:23:40 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-27 13:45:51 -0700
commit505fbcf035c245a1a42cd80184feecf61ee868dc (patch)
tree6931cf7a377b79e2bbb227f32f2f0856fe4d87a2 /net/ipv4/tcp_ipv4.c
parentb1beb681cba5358f62e6187340660ade226a5fcc (diff)
downloadblackbird-op-linux-505fbcf035c245a1a42cd80184feecf61ee868dc.tar.gz
blackbird-op-linux-505fbcf035c245a1a42cd80184feecf61ee868dc.zip
ipv4: fix TCP early demux
commit 92101b3b2e317 (ipv4: Prepare for change of rt->rt_iif encoding.) invalidated TCP early demux, because rx_dst_ifindex is not properly initialized and checked. Also remove the use of inet_iif(skb) in favor or skb->skb_iif Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index b6b07c93924c..2fbd9921253f 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1620,17 +1620,15 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
sock_rps_save_rxhash(sk, skb);
if (sk->sk_rx_dst) {
struct dst_entry *dst = sk->sk_rx_dst;
- if (dst->ops->check(dst, 0) == NULL) {
+ if (inet_sk(sk)->rx_dst_ifindex != skb->skb_iif ||
+ dst->ops->check(dst, 0) == NULL) {
dst_release(dst);
sk->sk_rx_dst = NULL;
}
}
if (unlikely(sk->sk_rx_dst == NULL)) {
- struct inet_sock *icsk = inet_sk(sk);
- struct rtable *rt = skb_rtable(skb);
-
- sk->sk_rx_dst = dst_clone(&rt->dst);
- icsk->rx_dst_ifindex = inet_iif(skb);
+ sk->sk_rx_dst = dst_clone(skb_dst(skb));
+ inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;
}
if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len)) {
rsk = sk;
@@ -1709,11 +1707,11 @@ void tcp_v4_early_demux(struct sk_buff *skb)
skb->destructor = sock_edemux;
if (sk->sk_state != TCP_TIME_WAIT) {
struct dst_entry *dst = sk->sk_rx_dst;
- struct inet_sock *icsk = inet_sk(sk);
+
if (dst)
dst = dst_check(dst, 0);
if (dst &&
- icsk->rx_dst_ifindex == skb->skb_iif)
+ inet_sk(sk)->rx_dst_ifindex == skb->skb_iif)
skb_dst_set_noref(skb, dst);
}
}
OpenPOWER on IntegriCloud