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- Make sure that interface can't be marked up before a route to the remote

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tunnel end was found.
- Flush route and reset MTU if interface is marked down.
This commit is contained in:
tron 1999-04-04 09:10:27 +00:00
parent 9350aaaee9
commit 1b27086b7e
1 changed files with 24 additions and 1 deletions
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25
sys/netinet/ip_ipip.c
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@ -1,4 +1,4 @@
/* $NetBSD: ip_ipip.c,v 1.5 1999/04/04 00:21:53 tron Exp $ */
/* $NetBSD: ip_ipip.c,v 1.6 1999/04/04 09:10:27 tron Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -303,6 +303,8 @@ ipip_ioctl(ifp, cmd, data)
sc->sc_src = (satosin(ifa->ifa_addr))->sin_addr;
sc->sc_dst = ia->ia_dstaddr.sin_addr;
ifp->if_mtu = 0;
ifp->if_flags &= ~IFF_UP;
if (!in_nullhost(sc->sc_src) && !in_nullhost(sc->sc_dst)) {
struct rtentry *rt;
@ -324,6 +326,27 @@ ipip_ioctl(ifp, cmd, data)
case SIOCSIFFLAGS:
if (in_nullhost(sc->sc_src) || in_nullhost(sc->sc_dst))
ifp->if_flags &= ~IFF_UP;
if (ifp->if_flags & IFF_UP) {
if (sc->sc_route.ro_rt == NULL) {
struct rtentry *rt;
ipip_compute_route(sc);
rt = sc->sc_route.ro_rt;
if (rt != NULL)
ifp->if_mtu = rt->rt_ifp->if_mtu -
ifp->if_hdrlen;
else
ifp->if_flags &= ~IFF_UP;
}
}
else {
if (sc->sc_route.ro_rt != NULL) {
RTFREE(sc->sc_route.ro_rt);
sc->sc_route.ro_rt = NULL;
}
ifp->if_mtu = 0;
}
break;
case SIOCSIFMTU: