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Clean up after tun(4) properly; remove routes whose ifp is set to

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that of the tun instance even for the !AF_INET case, and properly
remove configured addresses by calling if_purgeaddrs().

Maintain the TUN_DSTADDR behaviour for compatibility with the OS/390
emulator.

MFC after:	3 weeks
PR:		100080
Reviewed by:	bz
This commit is contained in:
Bruce M Simpson 2007-02-05 11:15:52 +00:00
parent 6ede684320
commit cc67c657e0
1 changed files with 9 additions and 4 deletions
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13
sys/net/if_tun.c
View File

@ -458,16 +458,21 @@ tunclose(struct cdev *dev, int foo, int bar, struct thread *td)
splx(s);
}
/* Delete all addresses and routes which reference this interface. */
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
struct ifaddr *ifa;
s = splimp();
/* find internet addresses and delete routes */
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
if (ifa->ifa_addr->sa_family == AF_INET)
/* Unlocked read. */
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
/* deal w/IPv4 PtP destination; unlocked read */
if (ifa->ifa_addr->sa_family == AF_INET) {
rtinit(ifa, (int)RTM_DELETE,
tp->tun_flags & TUN_DSTADDR ? RTF_HOST : 0);
} else {
rtinit(ifa, (int)RTM_DELETE, 0);
}
}
if_purgeaddrs(ifp);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
splx(s);
}