diff options
| author |   itojun <itojun@openbsd.org> | 2003-05-29 04:55:55 +0000 |
|---|---|---|
| committer | itojun <itojun@openbsd.org> | 2003-05-29 04:55:55 +0000 |
| commit | 8fc9cea84b3e00f90e1da2f0148460576b94da49 (patch) | |
| tree | 34f72193badf56fbff739f7377419feff7cbd535 /sys/netinet/tcp_input.c | |
| parent | >permit numberic values for uid and gid; allow "<" and ">" for less and (diff) | |
| download | wireguard-openbsd-8fc9cea84b3e00f90e1da2f0148460576b94da49.tar.xz wireguard-openbsd-8fc9cea84b3e00f90e1da2f0148460576b94da49.zip | |
use IN6_LINKMTU for IPv6 link MTU. sync w/kame
Diffstat (limited to 'sys/netinet/tcp_input.c')
| -rw-r--r-- | sys/netinet/tcp_input.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index 940f09d267d..a56d1dd0647 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_input.c,v 1.128 2003/05/29 00:35:18 itojun Exp $ */ +/* $OpenBSD: tcp_input.c,v 1.129 2003/05/29 04:55:55 itojun Exp $ */ /* $NetBSD: tcp_input.c,v 1.23 1996/02/13 23:43:44 christos Exp $ */ /* @@ -3011,7 +3011,16 @@ tcp_mss(tp, offer) /* Calculate the value that we offer in TCPOPT_MAXSEG */ if (offer != -1) { +#ifndef INET6 mssopt = ifp->if_mtu - iphlen - sizeof(struct tcphdr); +#else + if (tp->pf == AF_INET) + mssopt = ifp->if_mtu - iphlen - sizeof(struct tcphdr); + else + mssopt = IN6_LINKMTU(ifp) - iphlen - + sizeof(struct tcphdr); +#endif + mssopt = max(tcp_mssdflt, mssopt); } |