sys/netgraph/ng_frame_relay.c

47  * It has a 'downstream' hook that goes to the line, and a
48  * hook for each DLCI (eg, 'dlci16').
67 struct ctxinfo {		/* one per active hook */
72 	hook_p  hook;		/* if there's a hook assigned.. */
225  * Add a new hook
228  * The hook's private info points to our stash of info about that
232 ngfrm_newhook(node_p node, hook_p hook, const char *name)
240 	/* Check if it's our friend the control hook */
242 		NG_HOOK_SET_PRIVATE(hook, NULL);	/* paranoid */
249 	 * hook.
258 		if (sc->downstream.hook)
262 		NG_HOOK_SET_PRIVATE(hook, &sc->downstream);
263 		sc->downstream.hook = hook;
270 	/* Must be a dlci hook at this point */
288 	 * Be paranoid: if it's got a hook already, that dlci is in use .
292 	if (sc->channel[ctxnum].hook != NULL)
299 	NG_HOOK_SET_PRIVATE(hook, sc->channel + ctxnum);
300 	sc->channel[ctxnum].hook = hook;
326 ngfrm_rcvdata(hook_p hook, item_p item)
328 	struct	ctxinfo *const ctxp = NG_HOOK_PRIVATE(hook);
336 	/* Data doesn't come in from just anywhere (e.g debug hook) */
343 		return (ngfrm_decode(NG_HOOK_NODE(hook), item));
347 	sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
350 	if ((sc->downstream.hook == NULL)
394 	NG_FWD_NEW_DATA(error, item, sc->downstream.hook, m);
447 	if ((ctxnum & CTX_VALID) && sc->channel[ctxnum &= CTX_VALUE].hook) {
450 		NG_FWD_NEW_DATA(error, item, sc->channel[ctxnum].hook, m);
482 ngfrm_disconnect(hook_p hook)
484 	const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
485 	struct ctxinfo *const cp = NG_HOOK_PRIVATE(hook);
488 	/* If it's a regular dlci hook, then free resources etc.. */
490 		cp->hook = NULL;
497 	if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
498 	&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
499 		ng_rmnode_self(NG_HOOK_NODE(hook));