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| author | David S. Miller <davem@davemloft.net> | 2011-03-03 21:27:42 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-03 21:27:42 -0800 |
| commit | 0a0e9ae1bd788bc19adc4d4ae08c98b233697402 (patch) | |
| tree | 13825eeb5bbeae27d66e95f12168eff4b60701ab /net/ipv4/tcp_input.c | |
| parent | 01a16b21d6adf992aa863186c3c4e561a57c1714 (diff) | |
| parent | b65a0e0c84cf489bfa00d6aa6c48abc5a237100f (diff) | |
| download | lwn-0a0e9ae1bd788bc19adc4d4ae08c98b233697402.tar.gz lwn-0a0e9ae1bd788bc19adc4d4ae08c98b233697402.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/bnx2x/bnx2x.h
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 2f692cefd3b0..08ea735b9d72 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); |