diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-03-01 23:20:20 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-03-01 23:20:20 +0000 |
| commit | 8d3c3ddfa85837e24fad6fa39318617cbb59e843 (patch) | |
| tree | f699dcaac2a11f0c9506ad111ae39fd5e3617c2d /net/ipv4/tcp_input.c | |
| parent | e8b2c3c47a53348aebbbeb5322e32937df958793 (diff) | |
| parent | 6927faf30920b8c03dfa007e732642a1f1f20089 (diff) | |
Merge branch 'drm-intel-fixes' into drm-intel-next
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 eb7f82ebf4a3..65f6c0406245 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); |