Function ng_uncallout

freebsd/netgraph/ng_base.c:3812–3840

A special modified version of callout_stop() */

/* A special modified version of callout_stop() */
int
ng_uncallout(struct callout *c, node_p node)
{
	item_p item;
	int rval;

	KASSERT(c != NULL, ("ng_uncallout: NULL callout"));
	KASSERT(node != NULL, ("ng_uncallout: NULL node"));

	rval = callout_stop(c);
	item = c->c_arg;
	/* Do an extra check */
	if ((rval > 0) && (c->c_func == &ng_callout_trampoline) &&
	    (item != NULL) && (NGI_NODE(item) == node)) {
		/*
		 * We successfully removed it from the queue before it ran
		 * So now we need to unreference everything that was
		 * given extra references. (NG_FREE_ITEM does this).
		 */
		NG_FREE_ITEM(item);
	}
	c->c_arg = NULL;

	/*
	 * Callers only want to know if the callout was cancelled and
	 * not draining or stopped.
	 */
	return (rval > 0);
}

/*
 * Set the address, if none given, give the node here.