Function vxlan_setup_multicast_interface

freebsd/net/if_vxlan.c:1448–1471

}

static int
vxlan_setup_multicast_interface(struct vxlan_softc *sc)
{
	struct ifnet *ifp;

	ifp = ifunit_ref(sc->vxl_mc_ifname);
	if (ifp == NULL) {
		if_printf(sc->vxl_ifp, "multicast interface %s does "
		    "not exist\n", sc->vxl_mc_ifname);
		return (ENOENT);
	}

	if ((ifp->if_flags & IFF_MULTICAST) == 0) {
		if_printf(sc->vxl_ifp, "interface %s does not support "
		     "multicast\n", sc->vxl_mc_ifname);
		if_rele(ifp);
		return (ENOTSUP);
	}

	sc->vxl_mc_ifp = ifp;
	sc->vxl_mc_ifindex = ifp->if_index;

	return (0);
}

static int
vxlan_setup_multicast(struct vxlan_softc *sc)