Function tun_busy

freebsd/net/if_tuntap.c:378–387

}

static int
tun_busy(struct tuntap_softc *tp)
{
	int ret;

	TUN_LOCK(tp);
	ret = tun_busy_locked(tp);
	TUN_UNLOCK(tp);
	return (ret);
}

static void
tun_unbusy(struct tuntap_softc *tp)