sys/netgraph/ng_frame_relay.c

49  * It has a 'downstream' hook that goes to the line, and a
50  * hook for each DLCI (eg, 'dlci16').
69 struct ctxinfo {		/* one per active hook */
74 	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.
259 		if (sc->downstream.hook)
263 		NG_HOOK_SET_PRIVATE(hook, &sc->downstream);
264 		sc->downstream.hook = hook;
271 	/* Must be a dlci hook at this point */
289 	 * Be paranoid: if it's got a hook already, that dlci is in use .
293 	if (sc->channel[ctxnum].hook != NULL)
300 	NG_HOOK_SET_PRIVATE(hook, sc->channel + ctxnum);
301 	sc->channel[ctxnum].hook = hook;
327 ngfrm_rcvdata(hook_p hook, item_p item)
329 	struct	ctxinfo *const ctxp = NG_HOOK_PRIVATE(hook);
337 	/* Data doesn't come in from just anywhere (e.g debug hook) */
346 		return (ngfrm_decode(NG_HOOK_NODE(hook), item));
350 	sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
353 	if ((sc->downstream.hook == NULL)
401 	NG_FWD_NEW_DATA(error, item, sc->downstream.hook, m);
459 	if ((ctxnum & CTX_VALID) && sc->channel[ctxnum &= CTX_VALUE].hook) {
462 		NG_FWD_NEW_DATA(error, item, sc->channel[ctxnum].hook, m);
494 ngfrm_disconnect(hook_p hook)
496 	const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
497 	struct ctxinfo *const cp = NG_HOOK_PRIVATE(hook);
500 	/* If it's a regular dlci hook, then free resources etc.. */
502 		cp->hook = NULL;
509 	if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
510 	&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
511 		ng_rmnode_self(NG_HOOK_NODE(hook));