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| author | Zheng Yan <zheng.z.yan@intel.com> | 2011-09-18 22:37:34 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-09-18 22:37:34 -0400 |
| commit | f779b2d60ab95c17f1e025778ed0df3ec2f05d75 (patch) | |
| tree | 0a83ff862dd34ff9f9864212af8faf06ea526a96 /net/ipv4/tcp_input.c | |
| parent | e05c82d3666119075615fdbf6abca0266344f27b (diff) | |
| download | lwn-f779b2d60ab95c17f1e025778ed0df3ec2f05d75.tar.gz lwn-f779b2d60ab95c17f1e025778ed0df3ec2f05d75.zip | |
tcp: fix validation of D-SACK
D-SACK is allowed to reside below snd_una. But the corresponding check
in tcp_is_sackblock_valid() is the exact opposite. It looks like a typo.
Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index ea0d2183df4b..21fab3edb92c 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -1124,7 +1124,7 @@ static int tcp_is_sackblock_valid(struct tcp_sock *tp, int is_dsack, return 0; /* ...Then it's D-SACK, and must reside below snd_una completely */ - if (!after(end_seq, tp->snd_una)) + if (after(end_seq, tp->snd_una)) return 0; if (!before(start_seq, tp->undo_marker)) |