diff options
| author |   michele <michele@openbsd.org> | 2007-05-22 10:20:55 +0000 |
|---|---|---|
| committer | michele <michele@openbsd.org> | 2007-05-22 10:20:55 +0000 |
| commit | 7ca82f2de6c0197975aee65e0e8b8877ad431b1d (patch) | |
| tree | 7811b16b4eb20f9c7c9f3a4d798fddce307f2009 /sys/netinet/tcp_input.c | |
| parent | zap double include; from p_nowaczyk AT o2.pl (diff) | |
| download | wireguard-openbsd-7ca82f2de6c0197975aee65e0e8b8877ad431b1d.tar.xz wireguard-openbsd-7ca82f2de6c0197975aee65e0e8b8877ad431b1d.zip | |
When a partial ack is received check if congestion window is larger than
acked bytes and update the window accordingly
fix PR4278
OK henning@ markus@ claudio@
Diffstat (limited to 'sys/netinet/tcp_input.c')
| -rw-r--r-- | sys/netinet/tcp_input.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index ad21ccc3fec..1dc889af11c 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_input.c,v 1.201 2007/02/13 06:39:50 itojun Exp $ */ +/* $OpenBSD: tcp_input.c,v 1.202 2007/05/22 10:20:55 michele Exp $ */ /* $NetBSD: tcp_input.c,v 1.23 1996/02/13 23:43:44 christos Exp $ */ /* @@ -3243,7 +3243,12 @@ tcp_newreno(tp, th) * Partial window deflation. Relies on fact that tp->snd_una * not updated yet. */ - tp->snd_cwnd -= (th->th_ack - tp->snd_una - tp->t_maxseg); + if (tp->snd_cwnd > th->th_ack - tp->snd_una) + tp->snd_cwnd -= th->th_ack - tp->snd_una; + else + tp->snd_cwnd = 0; + tp->snd_cwnd += tp->t_maxseg; + return 1; } return 0; |