[src/netbsd-1-5]: src/sys/netinet Fill in the next mtu field of a NEEDFRAG IC...

[sommerfeld <sommerfeld%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8a50e83a893e
branches:  netbsd-1-5
changeset: 489324:8a50e83a893e
user:      sommerfeld <sommerfeld%NetBSD.org@localhost>
date:      Thu Aug 31 14:19:50 2000 +0000

description:
Fill in the next mtu field of a NEEDFRAG ICMP error message.
>From marc horowitz, pr10857.  approved by *someone* on releng-1-5 a while back

diffstat:

 sys/netinet/ip_fil.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 7761608c1de0 -r 8a50e83a893e sys/netinet/ip_fil.c
--- a/sys/netinet/ip_fil.c      Thu Aug 31 12:40:50 2000 +0000
+++ b/sys/netinet/ip_fil.c      Thu Aug 31 14:19:50 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip_fil.c,v 1.55.2.2 2000/08/07 15:40:23 thorpej Exp $  */
+/*     $NetBSD: ip_fil.c,v 1.55.2.3 2000/08/31 14:19:50 sommerfeld Exp $       */
 
 /*
  * Copyright (C) 1993-2000 by Darren Reed.
@@ -9,7 +9,7 @@
  */
 #if !defined(lint)
 #if defined(__NetBSD__)
-static const char rcsid[] = "$NetBSD: ip_fil.c,v 1.55.2.2 2000/08/07 15:40:23 thorpej Exp $";
+static const char rcsid[] = "$NetBSD: ip_fil.c,v 1.55.2.3 2000/08/31 14:19:50 sommerfeld Exp $";
 #else
 static const char sccsid[] = "@(#)ip_fil.c     2.41 6/5/96 (C) 1993-2000 Darren Reed";
 static const char rcsid[] = "@(#)Id: ip_fil.c,v 2.42.2.10 2000/05/25 20:16:44 darrenr Exp";
@@ -1210,6 +1210,9 @@
        icmp->icmp_type = type;
        icmp->icmp_code = fin->fin_icode;
        icmp->icmp_cksum = 0;
+       if (type == ICMP_UNREACH &&
+           fin->fin_icode == ICMP_UNREACH_NEEDFRAG && ifp)
+               icmp->icmp_nextmtu = htons(((struct ifnet *) ifp)->if_mtu);
        if (avail) {
                bcopy((char *)oip, (char *)&icmp->icmp_ip, MIN(ohlen, avail));
                avail -= MIN(ohlen, avail);