diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-03-09 05:55:56 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-10 07:32:27 -0800 |
| commit | bb134d5d9580fc7b945e3bca3c4b263947022966 (patch) | |
| tree | 65f68dd2c96566c507854e4145af1b533e30833d /net | |
| parent | fe234f0e5cbb880792d2d1ac0743cf8c07e9dde3 (diff) | |
| download | linux-bb134d5d9580fc7b945e3bca3c4b263947022966.tar.bz2 | |
tcp: Fix tcp_v4_rcv()
Commit d218d111 (tcp: Generalized TTL Security Mechanism) added a bug
for TIMEWAIT sockets. We should not test min_ttl for TW sockets.
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 8d51d39ad1bb..70df40980a87 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1651,15 +1651,15 @@ int tcp_v4_rcv(struct sk_buff *skb) if (!sk) goto no_tcp_socket; +process: + if (sk->sk_state == TCP_TIME_WAIT) + goto do_time_wait; + if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) { NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP); goto discard_and_relse; } -process: - if (sk->sk_state == TCP_TIME_WAIT) - goto do_time_wait; - if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) goto discard_and_relse; nf_reset(skb); |