/*
* tunclose - close the device - mark i/f down & delete
* routing info
*/
int
tunclose(dev_t dev, int flag, int mode,
struct lwp *l)
{
int s;
struct tun_softc *tp;
struct ifnet *ifp;
s = splnet();
if ((tp = tun_find_zunit(minor(dev))) != NULL) {
/* interface was "destroyed" before the close */
seldestroy(&tp->tun_rsel);
seldestroy(&tp->tun_wsel);
softint_disestablish(tp->tun_osih);
softint_disestablish(tp->tun_isih);
mutex_destroy(&tp->tun_lock);
free(tp, M_DEVBUF);
goto out_nolock;
}
if ((tp = tun_find_unit(dev)) == NULL)
goto out_nolock;
ifp = &tp->tun_if;
tp->tun_flags &= ~TUN_OPEN;
tp->tun_pgid = 0;
selnotify(&tp->tun_rsel, 0, 0);
TUNDEBUG ("%s: closed\n", ifp->if_xname);
mutex_exit(&tp->tun_lock);
/*
* junk all pending output
*/
IFQ_PURGE(&ifp->if_snd);
if (ifp->if_flags & IFF_UP) {
if_down(ifp);
if (ifp->if_flags & IFF_RUNNING) {
/* find internet addresses and delete routes */
struct ifaddr *ifa;
IFADDR_FOREACH(ifa, ifp) {
#if defined(INET) || defined(INET6)
if (ifa->ifa_addr->sa_family == AF_INET ||
ifa->ifa_addr->sa_family == AF_INET6) {
rtinit(ifa, (int)RTM_DELETE,
tp->tun_flags & TUN_DSTADDR
? RTF_HOST
: 0);
}
#endif
}
}
}
void
pdq_ifwatchdog(
struct ifnet *ifp)
{
/*
* No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
* seconds. Remove all queued packets.
*/
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
IFQ_PURGE(&ifp->if_snd);
}
/*
* tunclose - close the device - mark i/f down & delete
* routing info
*/
static int
tunclose(struct cdev *dev, int foo, int bar, struct thread *td)
{
struct tun_softc *tp;
struct ifnet *ifp;
int s;
tp = dev->si_drv1;
ifp = &tp->tun_if;
mtx_lock(&tp->tun_mtx);
tp->tun_flags &= ~TUN_OPEN;
tp->tun_pid = 0;
/*
* junk all pending output
*/
s = splimp();
IFQ_PURGE(&ifp->if_snd);
splx(s);
mtx_unlock(&tp->tun_mtx);
if (ifp->if_flags & IFF_UP) {
s = splimp();
if_down(ifp);
splx(s);
}
if (ifp->if_flags & IFF_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. */
rtinit(ifa, (int)RTM_DELETE,
tp->tun_flags & TUN_DSTADDR ? RTF_HOST : 0);
ifp->if_flags &= ~IFF_RUNNING;
splx(s);
}
funsetown(&tp->tun_sigio);
selwakeuppri(&tp->tun_rsel, PZERO + 1);
TUNDEBUG (ifp, "closed\n");
return (0);
}