diff options
Diffstat (limited to 'sys/netinet/tcp_output.c')
| -rw-r--r-- | sys/netinet/tcp_output.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c index 5b236f45cd2..593748d0d41 100644 --- a/sys/netinet/tcp_output.c +++ b/sys/netinet/tcp_output.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_output.c,v 1.26 1999/12/10 17:51:10 itojun Exp $ */ +/* $OpenBSD: tcp_output.c,v 1.27 1999/12/15 16:37:20 provos Exp $ */ /* $NetBSD: tcp_output.c,v 1.16 1997/06/03 16:17:09 kml Exp $ */ /* @@ -399,6 +399,19 @@ again: if (flags & TH_FIN && ((tp->t_flags & TF_SENTFIN) == 0 || tp->snd_nxt == tp->snd_una)) goto send; +#ifdef TCP_SACK + /* + * In SACK, it is possible for tcp_output to fail to send a segment + * after the retransmission timer has been turned off. Make sure + * that the retransmission timer is set. + */ + if (SEQ_GT(tp->snd_max, tp->snd_una) && + tp->t_timer[TCPT_REXMT] == 0 && + tp->t_timer[TCPT_PERSIST] == 0) { + tp->t_timer[TCPT_REXMT] = tp->t_rxtcur; + return (0); + } +#endif /* TCP_SACK */ /* * TCP window updates are not reliable, rather a polling protocol |