diff options
| author |   provos <provos@openbsd.org> | 2001-06-23 03:10:21 +0000 |
|---|---|---|
| committer | provos <provos@openbsd.org> | 2001-06-23 03:10:21 +0000 |
| commit | a3e788a027651797a849e2d1f3ce39acb08ada95 (patch) | |
| tree | deab1fb5e7b3558acb2e6d8a82bbb8be52f1d294 /sys/netinet/tcp_output.c | |
| parent | restore correct ignore_user_known_hosts logic. (diff) | |
| download | wireguard-openbsd-a3e788a027651797a849e2d1f3ce39acb08ada95.tar.xz wireguard-openbsd-a3e788a027651797a849e2d1f3ce39acb08ada95.zip | |
fix up mtu for routes and ongoing tcp connection when if mtu changes
from FreeBSD; fixes pr/1878
Diffstat (limited to 'sys/netinet/tcp_output.c')
| -rw-r--r-- | sys/netinet/tcp_output.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c index a694cc0886d..37c2419b1ca 100644 --- a/sys/netinet/tcp_output.c +++ b/sys/netinet/tcp_output.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_output.c,v 1.37 2001/06/08 03:53:46 angelos Exp $ */ +/* $OpenBSD: tcp_output.c,v 1.38 2001/06/23 03:10:21 provos Exp $ */ /* $NetBSD: tcp_output.c,v 1.16 1997/06/03 16:17:09 kml Exp $ */ /* @@ -1102,6 +1102,16 @@ out: tcp_quench(tp->t_inpcb, 0); return (0); } + if (error == EMSGSIZE) { + /* + * ip_output() will have already fixed the route + * for us. tcp_mtudisc() will, as its last action, + * initiate retransmission, so it is important to + * not do so here. + */ + tcp_mtudisc(tp->t_inpcb, 0); + return (0); + } if ((error == EHOSTUNREACH || error == ENETDOWN) && TCPS_HAVERCVDSYN(tp->t_state)) { tp->t_softerror = error; |