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[src/trunk]: src/sys/netinet Avoid kernel panic if interface is configured be...
details: https://anonhg.NetBSD.org/src/rev/8974797ee782
branches: trunk
changeset: 471525:8974797ee782
user: tron <tron%NetBSD.org@localhost>
date: Sun Apr 04 00:21:53 1999 +0000
description:
Avoid kernel panic if interface is configured before a route to the
remote of the tunnel can be found.
XXX If you manually mark the interface as "UP" and set the MTU later
XXX sending a packet will still cause a kernel panic.
diffstat:
sys/netinet/ip_ipip.c | 17 +++++++++++------
1 files changed, 11 insertions(+), 6 deletions(-)
diffs (38 lines):
diff -r 2e80d3f48202 -r 8974797ee782 sys/netinet/ip_ipip.c
--- a/sys/netinet/ip_ipip.c Sat Apr 03 23:53:48 1999 +0000
+++ b/sys/netinet/ip_ipip.c Sun Apr 04 00:21:53 1999 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ip_ipip.c,v 1.4 1999/04/02 20:39:23 hwr Exp $ */
+/* $NetBSD: ip_ipip.c,v 1.5 1999/04/04 00:21:53 tron Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@@ -301,18 +301,23 @@
break;
}
- sc->sc_src = (satosin(ifa->ifa_addr))->sin_addr;
- sc->sc_dst = ia->ia_dstaddr.sin_addr;
+ sc->sc_src = (satosin(ifa->ifa_addr))->sin_addr;
+ sc->sc_dst = ia->ia_dstaddr.sin_addr;
if (!in_nullhost(sc->sc_src) && !in_nullhost(sc->sc_dst)) {
+ struct rtentry *rt;
+
ipip_compute_route(sc);
/*
* Now that we know the route to use, fill in the
* MTU.
*/
- ifp->if_mtu = sc->sc_route.ro_rt->rt_ifp->if_mtu -
- ifp->if_hdrlen;
- ifp->if_flags |= IFF_UP;
+ rt = sc->sc_route.ro_rt;
+ if (rt != NULL) {
+ ifp->if_mtu = rt->rt_ifp->if_mtu -
+ ifp->if_hdrlen;
+ ifp->if_flags |= IFF_UP;
+ }
}
break;
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