5 /*-
6  * SPDX-License-Identifier: BSD-3-Clause AND BSD-2-Clause
35  * Copyright (c) 1996-2000 Whistle Communications, Inc.
53  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
93 #define IFP2NG(ifp)  ((struct ng_node *)((struct gif_softc *)(ifp->if_softc))->gif_netgraph)
94 #define IFP2NG_SET(ifp, val)  (((struct gif_softc *)(ifp->if_softc))->gif_netgraph = (val))
96 /* Per-node private data */
99 	hook_p		lower;		/* lower OR orphan hook connection */  member
100 	u_char		lowerOrphan;	/* whether lower is lower or orphan */
174 	/* If "lower" hook not connected, let packet continue */  in ng_gif_input()
175 	if (priv->lower == NULL || priv->lowerOrphan)  in ng_gif_input()
191 	if (priv->lower == NULL || !priv->lowerOrphan) {  in ng_gif_input_orphan()
214 	/* Send out lower/orphan hook */  in ng_gif_input2()
215 	NG_SEND_DATA_ONLY(error, priv->lower, *mp);  in ng_gif_input2()
233 		    __func__, "create node", ifp->if_xname);  in ng_gif_attach()
241 		    __func__, "allocate memory", ifp->if_xname);  in ng_gif_attach()
246 	priv->ifp = ifp;  in ng_gif_attach()
250 	if (ng_name_node(node, ifp->if_xname) != 0) {  in ng_gif_attach()
252 		    __func__, ifp->if_xname);  in ng_gif_attach()
273 	 * handles it (as it should in the non netgraph case).  in ng_gif_detach()
276 	priv->ifp = NULL;	/* XXX race if interrupted an output packet */  in ng_gif_detach()
348 	u_char orphan = priv->lowerOrphan;  in ng_gif_newhook()
351 	/* Divert hook is an alias for lower */  in ng_gif_newhook()
357 		hookptr = &priv->lower;  in ng_gif_newhook()
360 		hookptr = &priv->lower;  in ng_gif_newhook()
371 	priv->lowerOrphan = orphan;  in ng_gif_newhook()
399 	switch (msg->header.typecookie) {  in ng_gif_rcvmsg()
400 	case NGM_GIF_COOKIE:  in ng_gif_rcvmsg()
401 		switch (msg->header.cmd) {  in ng_gif_rcvmsg()
402 		case NGM_GIF_GET_IFNAME:  in ng_gif_rcvmsg()
408 			strlcpy(resp->data, priv->ifp->if_xname, IFNAMSIZ);  in ng_gif_rcvmsg()
410 		case NGM_GIF_GET_IFINDEX:  in ng_gif_rcvmsg()
416 			*((u_int32_t *)resp->data) = priv->ifp->if_index;  in ng_gif_rcvmsg()
445 	if (hook == priv->lower)  in ng_gif_rcvdata()
451  * Handle an mbuf received on the "lower" hook.
462 	if (m->m_pkthdr.len < sizeof(sa_family_t)) {  in ng_gif_rcv_lower()
466 	if (m->m_len < sizeof(sa_family_t)  in ng_gif_rcv_lower()
480 	return gif_output(priv->ifp, m, &dst, NULL);  in ng_gif_rcv_lower()
492 	if (node->nd_flags & NGF_REALLY_DIE) {  in ng_gif_shutdown()
516 	if (hook == priv->lower) {  in ng_gif_disconnect()
517 		priv->lower = NULL;  in ng_gif_disconnect()
518 		priv->lowerOrphan = 0;  in ng_gif_disconnect()
543 	case MOD_LOAD:  in ng_gif_mod_event()
555 		/* Create nodes for any already-existing gif interfaces */  in ng_gif_mod_event()
561 				if (ifp->if_type == IFT_GIF)  in ng_gif_mod_event()
570 	case MOD_UNLOAD:  in ng_gif_mod_event()
576 		 * case, we know there are no nodes left if the action  in ng_gif_mod_event()