Function bridge_clone_create

freebsd/net/if_bridge.c:678–725

* bridge_clone_create: * * Create a new bridge instance. */

 *	Create a new bridge instance.
 */
static int
bridge_clone_create(struct if_clone *ifc, int unit, caddr_t params)
{
	struct bridge_softc *sc;
	struct ifnet *ifp;

	sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO);
	ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
	if (ifp == NULL) {
		free(sc, M_DEVBUF);
		return (ENOSPC);
	}

	BRIDGE_LOCK_INIT(sc);
	sc->sc_brtmax = BRIDGE_RTABLE_MAX;
	sc->sc_brttimeout = BRIDGE_RTABLE_TIMEOUT;

	/* Initialize our routing table. */
	bridge_rtable_init(sc);

	callout_init_mtx(&sc->sc_brcallout, &sc->sc_rt_mtx, 0);

	CK_LIST_INIT(&sc->sc_iflist);
	CK_LIST_INIT(&sc->sc_spanlist);

	ifp->if_softc = sc;
	if_initname(ifp, bridge_name, unit);
	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
	ifp->if_ioctl = bridge_ioctl;
	ifp->if_transmit = bridge_transmit;
	ifp->if_qflush = bridge_qflush;
	ifp->if_init = bridge_init;
	ifp->if_type = IFT_BRIDGE;

	ether_gen_addr(ifp, &sc->sc_defaddr);

	bstp_attach(&sc->sc_stp, &bridge_ops);
	ether_ifattach(ifp, sc->sc_defaddr.octet);
	/* Now undo some of the damage... */
	ifp->if_baudrate = 0;
	ifp->if_type = IFT_BRIDGE;

	BRIDGE_LIST_LOCK();
	LIST_INSERT_HEAD(&V_bridge_list, sc, sc_list);
	BRIDGE_LIST_UNLOCK();

	return (0);
}

static void
bridge_clone_destroy_cb(struct epoch_context *ctx)