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authorDavid S. Miller <davem@davemloft.net>2008-09-23 02:51:41 -0700
committerDavid S. Miller <davem@davemloft.net>2008-09-23 02:51:41 -0700
commit28e3487b7dd8a9791baac924bc887140ec747bed (patch)
treeb32bacf3b9374cf3e7108f5489aebb79b23aab92
parent77d40a0952b16e020ce07c4cf9fb22024448275b (diff)
downloadlinux-28e3487b7dd8a9791baac924bc887140ec747bed.tar.bz2
tcp: Fix queue traversal in tcp_use_frto().
We must check tcp_skb_is_last() before doing a tcp_write_queue_next(). Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/tcp_input.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index cbfe13d5f423..3b76bce769dd 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1746,6 +1746,8 @@ int tcp_use_frto(struct sock *sk)
return 0;
skb = tcp_write_queue_head(sk);
+ if (tcp_skb_is_last(sk, skb))
+ return 1;
skb = tcp_write_queue_next(sk, skb); /* Skips head */
tcp_for_write_queue_from(skb, sk) {
if (skb == tcp_send_head(sk))