drivers/h4/ng_h4.c

68  ** This node implements a Bluetooth HCI UART transport layer as per chapter
70  ** discipline that is also a netgraph node. Installing this line discipline
71  ** on a terminal device instantiates a new netgraph node of this type, which
72  ** allows access to the device via the "hook" hook of the node.
75  ** corresponding netgraph node via a NGIOCGINFO ioctl().
81 MALLOC_DEFINE(M_NETGRAPH_H4, "netgraph_h4", "Netgraph Bluetooth H4 node");
121 /* Netgraph node type descriptor */
175 	mtx_init(&sc->outq.ifq_mtx, "ng_h4 node+queue", NULL, MTX_DEF);
181 	/* Setup netgraph node */
182 	error = ng_make_node_common(&typestruct, &sc->node);
186 		printf("%s: Unable to create new node!\n", __func__);
195 	/* Assign node its name */
198 	error = ng_name_node(sc->node, name);
202 		printf("%s: %s - node name exists?\n", __func__, name);
204 		NG_NODE_UNREF(sc->node);
213 	NG_NODE_SET_PRIVATE(sc->node, sc);
216 	/* The node has to be a WRITER because data can change node status */
217 	NG_NODE_FORCE_WRITER(sc->node);
237  * and from ttioctl. This causes the node to be destroyed as well.
252 			ng_uncallout(&sc->timo, sc->node);
259 		ng_rmnode_self(sc->node);
266  * Once the device has been turned into a node, we don't allow reading.
276  * Once the device has been turned into a node, we don't allow writing.
308 		if (NG_NODE_HAS_NAME(sc->node))
309 			strncpy(NI(data)->name, NG_NODE_NAME(sc->node),
312 		strncpy(NI(data)->type, sc->node->nd_type->name,
315 		NI(data)->id = (u_int32_t) ng_node2ID(sc->node);
316 		NI(data)->hooks = NG_NODE_NUMHOOKS(sc->node);
340 	    sc->node == NULL || NG_NODE_NOT_VALID(sc->node))
348 			NG_NODE_NAME(sc->node));
362 			NG_NODE_NAME(sc->node), c & TTY_ERRORMASK,
381 			__func__, NG_NODE_NAME(sc->node), c & TTY_CHARMASK,
398 		NG_NODE_NAME(sc->node), c, sc->want, sc->got);
410 			NG_NODE_NAME(sc->node), sc->ibuf[0]);
434 				"type=%#x\n", __func__, NG_NODE_NAME(sc->node),
472 			NG_NODE_NAME(sc->node), sc->ibuf[0], sc->got, c);
497 					NG_NODE_NAME(sc->node), sc->ibuf[0],
523 			NG_NODE_NAME(sc->node), sc->ibuf[0], sc->got);
539 					__func__, NG_NODE_NAME(sc->node));
553 		KASSERT((0), ("Invalid H4 node state=%d", sc->state));
575 	    sc->node == NULL || NG_NODE_NOT_VALID(sc->node))
632 		ng_callout(&sc->timo, sc->node, NULL, 1,
642  **			    Netgraph node methods
647  * Initialize a new node of this type. We only allow nodes to be created as
653 ng_h4_constructor(node_p node)
663 ng_h4_newhook(node_p node, hook_p hook, const char *name)
665 	ng_h4_info_p	sc = (ng_h4_info_p) NG_NODE_PRIVATE(node);
723 			ng_uncallout(&sc->timo, sc->node);
740  * Remove this node. The does the netgraph portion of the shutdown.
745 ng_h4_shutdown(node_p node)
747 	ng_h4_info_p	sc = (ng_h4_info_p) NG_NODE_PRIVATE(node);
754 		NG_NODE_REVIVE(node);	/* we will persist */
761 	NG_NODE_SET_PRIVATE(node, NULL);
765 	NG_NODE_UNREF(node);
798 			NG_NODE_NAME(sc->node), m->m_pkthdr.len);
810 		NG_NODE_NAME(sc->node), m->m_pkthdr.len);
835 ng_h4_rcvmsg(node_p node, item_p item, hook_p lasthook)
837 	ng_h4_info_p	 sc = (ng_h4_info_p) NG_NODE_PRIVATE(node);
960 	NG_RESPOND_MSG(error, node, item, resp);
972 ng_h4_process_timeout(node_p node, hook_p hook, void *arg1, int arg2)
974 	ng_h4_info_p	sc = (ng_h4_info_p) NG_NODE_PRIVATE(node);
982  * Handle loading and unloading for this node type