diff options
| author | Joel Becker <jlbec@evilplan.org> | 2011-03-28 09:44:26 -0700 |
|---|---|---|
| committer | Joel Becker <jlbec@evilplan.org> | 2011-03-28 09:44:26 -0700 |
| commit | 99bdc3880c611c7f2061fbd5372ef81b40217e26 (patch) | |
| tree | ef68a53e28e9ee53ce9db3642bab5fa5b3d44866 /net/ipv4/tcp_input.c | |
| parent | ed59992e8d91b70053c53d846a76f7e1ac000454 (diff) | |
| parent | b4e1b7e88b2c87c358c2a88bec0c76d25accc604 (diff) | |
Merge branch 'mlog_replace_for_39' of git://repo.or.cz/taoma-kernel into ocfs2-merge-window-fix
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index eb7f82ebf4a..65f6c040624 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -1222,7 +1222,7 @@ static int tcp_check_dsack(struct sock *sk, struct sk_buff *ack_skb, } /* D-SACK for already forgotten data... Do dumb counting. */ - if (dup_sack && + if (dup_sack && tp->undo_marker && tp->undo_retrans && !after(end_seq_0, prior_snd_una) && after(end_seq_0, tp->undo_marker)) tp->undo_retrans--; @@ -1299,7 +1299,8 @@ static u8 tcp_sacktag_one(struct sk_buff *skb, struct sock *sk, /* Account D-SACK for retransmitted packet. */ if (dup_sack && (sacked & TCPCB_RETRANS)) { - if (after(TCP_SKB_CB(skb)->end_seq, tp->undo_marker)) + if (tp->undo_marker && tp->undo_retrans && + after(TCP_SKB_CB(skb)->end_seq, tp->undo_marker)) tp->undo_retrans--; if (sacked & TCPCB_SACKED_ACKED) state->reord = min(fack_count, state->reord); |