Function edsc_clone_create

freebsd/net/if_edsc.c:96–169

* Create an interface instance. */

 * Create an interface instance.
 */
static int
edsc_clone_create(struct if_clone *ifc, int unit, caddr_t params)
{
	struct edsc_softc	*sc;
	struct ifnet		*ifp;
	struct ether_addr	eaddr;

	/*
	 * Allocate soft and ifnet structures.  Link each to the other.
	 */
	sc = malloc(sizeof(struct edsc_softc), M_EDSC, M_WAITOK | M_ZERO);
	ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
	if (ifp == NULL) {
		free(sc, M_EDSC);
		return (ENOSPC);
	}

	ifp->if_softc = sc;

	/*
	 * Get a name for this particular interface in its ifnet structure.
	 */
	if_initname(ifp, edscname, unit);

	/*
	 * Typical Ethernet interface flags: we can do broadcast and
	 * multicast but can't hear our own broadcasts or multicasts.
	 */
	ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX;

	/*
	 * We can pretent we have the whole set of hardware features
	 * because we just discard all packets we get from the upper layer.
	 * However, the features are disabled initially.  They can be
	 * enabled via edsc_ioctl() when needed.
	 */
	ifp->if_capabilities =
	    IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM |
	    IFCAP_HWCSUM | IFCAP_TSO |
	    IFCAP_JUMBO_MTU;
	ifp->if_capenable = 0;

	/*
	 * Set the interface driver methods.
	 */
	ifp->if_init = edsc_init;
	/* ifp->if_input = edsc_input; */
	ifp->if_ioctl = edsc_ioctl;
	ifp->if_start = edsc_start;

	/*
	 * Set the maximum output queue length from the global parameter.
	 */
	ifp->if_snd.ifq_maxlen = ifqmaxlen;

	/*
	 * Generate an arbitrary MAC address for the cloned interface.
	 */