Function ng_eiface_constructor

freebsd/netgraph/ng_eiface.c:381–442

* Constructor for a node */

 * Constructor for a node
 */
static int
ng_eiface_constructor(node_p node)
{
	struct ifnet *ifp;
	priv_p priv;
	struct ether_addr eaddr;

	/* Allocate node and interface private structures */
	priv = malloc(sizeof(*priv), M_NETGRAPH, M_WAITOK | M_ZERO);

	ifp = priv->ifp = if_alloc(IFT_ETHER);
	if (ifp == NULL) {
		free(priv, M_NETGRAPH);
		return (ENOSPC);
	}

	/* Link them together */
	ifp->if_softc = priv;

	/* Get an interface unit number */
	priv->unit = alloc_unr(V_ng_eiface_unit);

	/* Link together node and private info */
	NG_NODE_SET_PRIVATE(node, priv);
	priv->node = node;

	/* Initialize interface structure */
	if_initname(ifp, NG_EIFACE_EIFACE_NAME, priv->unit);
	ifp->if_init = ng_eiface_init;
	ifp->if_output = ether_output;
	ifp->if_start = ng_eiface_start;
	ifp->if_ioctl = ng_eiface_ioctl;
	ifp->if_snd.ifq_maxlen = ifqmaxlen;
	ifp->if_flags = (IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST);
	ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_JUMBO_MTU;
	ifp->if_capenable = IFCAP_VLAN_MTU | IFCAP_JUMBO_MTU;
	ifmedia_init(&priv->media, 0, ng_eiface_mediachange,
	    ng_eiface_mediastatus);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_10_T, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_10_T | IFM_FDX, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_100_TX, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_100_TX | IFM_FDX, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_1000_T, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_10G_T | IFM_FDX, 0, NULL);
	ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
	ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
	priv->link_status = IFM_AVALID;

	/* Give this node the same name as the interface (if possible) */
	if (ng_name_node(node, ifp->if_xname) != 0)
		log(LOG_WARNING, "%s: can't acquire netgraph name\n",
		    ifp->if_xname);

	/* Attach the interface */
	ether_gen_addr(ifp, &eaddr);
	ether_ifattach(ifp, eaddr.octet);
	ifp->if_baudrate = ifmedia_baudrate(IFM_ETHER | IFM_1000_T);