net/tipc/node_subscr.h

/*
 * net/tipc/node_subscr.h: Include file for TIPC "node down" subscription handling
 * 
 * Copyright (c) 2003-2005, Ericsson Research Canada
 * Copyright (c) 2005, Wind River Systems
 * Copyright (c) 2005-2006, Ericsson AB
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this 
 * list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, 
 * this list of conditions and the following disclaimer in the documentation 
 * and/or other materials provided with the distribution.
 * Neither the names of the copyright holders nor the names of its 
 * contributors may be used to endorse or promote products derived from this 
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _TIPC_NODE_SUBSCR_H
#define _TIPC_NODE_SUBSCR_H

#include "addr.h"

typedef void (*net_ev_handler) (void *usr_handle);

/**
 * struct node_subscr - "node down" subscription entry
 * @node: ptr to node structure of interest (or NULL, if none)
 * @handle_node_down: routine to invoke when node fails
 * @usr_handle: argument to pass to routine when node fails
 * @nodesub_list: adjacent entries in list of subscriptions for the node
 */

struct node_subscr {
	struct node *node;
	net_ev_handler handle_node_down;
	void *usr_handle;
	struct list_head nodesub_list;
};

void nodesub_subscribe(struct node_subscr *node_sub, u32 addr,
		       void *usr_handle, net_ev_handler handle_down);
void nodesub_unsubscribe(struct node_subscr *node_sub);

#endif