diff options
| author | andre <andre@FreeBSD.org> | 2012-10-28 17:25:08 +0000 |
|---|---|---|
| committer | andre <andre@FreeBSD.org> | 2012-10-28 17:25:08 +0000 |
| commit | 79dbdb05fd2797ee1594cffb5dfae196f0580dd5 (patch) | |
| tree | 1c72efa27b238febe6da8532f840afcd3d5ea1cd /sys/netinet/tcp_syncache.c | |
| parent | 5589a42386ec4529bbf328ac2d0d56993c7b6d61 (diff) | |
| download | FreeBSD-src-79dbdb05fd2797ee1594cffb5dfae196f0580dd5.zip FreeBSD-src-79dbdb05fd2797ee1594cffb5dfae196f0580dd5.tar.gz | |
When SYN or SYN/ACK had to be retransmitted RFC5681 requires us to
reduce the initial CWND to one segment. This reduction got lost
some time ago due to a change in initialization ordering.
Additionally in tcp_timer_rexmt() avoid entering fast recovery when
we're still in TCPS_SYN_SENT state.
MFC after: 2 weeks
Diffstat (limited to 'sys/netinet/tcp_syncache.c')
| -rw-r--r-- | sys/netinet/tcp_syncache.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/netinet/tcp_syncache.c b/sys/netinet/tcp_syncache.c index 55cca73..adb175b 100644 --- a/sys/netinet/tcp_syncache.c +++ b/sys/netinet/tcp_syncache.c @@ -852,11 +852,12 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m) tcp_mss(tp, sc->sc_peer_mss); /* - * If the SYN,ACK was retransmitted, reset cwnd to 1 segment. + * If the SYN,ACK was retransmitted, indicate that CWND to be + * limited to one segment in cc_conn_init(). * NB: sc_rxmits counts all SYN,ACK transmits, not just retransmits. */ if (sc->sc_rxmits > 1) - tp->snd_cwnd = tp->t_maxseg; + tp->snd_cwnd = 1; #ifdef TCP_OFFLOAD /* |
