LXR linux/net/tipc/node

   1/*
   2 * net/tipc/node_subscr.h: Include file for TIPC "node down" subscription handling
   3 *
   4 * Copyright (c) 1995-2006, Ericsson AB
   5 * Copyright (c) 2005, Wind River Systems
   6 * All rights reserved.
   7 *
   8 * Redistribution and use in source and binary forms, with or without
   9 * modification, are permitted provided that the following conditions are met:
  10 *
  11 * 1. Redistributions of source code must retain the above copyright
  12 *    notice, this list of conditions and the following disclaimer.
  13 * 2. Redistributions in binary form must reproduce the above copyright
  14 *    notice, this list of conditions and the following disclaimer in the
  15 *    documentation and/or other materials provided with the distribution.
  16 * 3. Neither the names of the copyright holders nor the names of its
  17 *    contributors may be used to endorse or promote products derived from
  18 *    this software without specific prior written permission.
  19 *
  20 * Alternatively, this software may be distributed under the terms of the
  21 * GNU General Public License ("GPL") version 2 as published by the Free
  22 * Software Foundation.
  23 *
  24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34 * POSSIBILITY OF SUCH DAMAGE.
  35 */
  36
  37#ifndef _TIPC_NODE_SUBSCR_H
  38#define _TIPC_NODE_SUBSCR_H
  39
  40#include "addr.h"
  41
  42typedef void (*net_ev_handler) (void *usr_handle);
  43
  44/**
  45 * struct tipc_node_subscr - "node down" subscription entry
  46 * @node: ptr to node structure of interest (or NULL, if none)
  47 * @handle_node_down: routine to invoke when node fails
  48 * @usr_handle: argument to pass to routine when node fails
  49 * @nodesub_list: adjacent entries in list of subscriptions for the node
  50 */
  51
  52struct tipc_node_subscr {
  53        struct tipc_node *node;
  54        net_ev_handler handle_node_down;
  55        void *usr_handle;
  56        struct list_head nodesub_list;
  57};
  58
  59void tipc_nodesub_subscribe(struct tipc_node_subscr *node_sub, u32 addr,
  60                            void *usr_handle, net_ev_handler handle_down);
  61void tipc_nodesub_unsubscribe(struct tipc_node_subscr *node_sub);
  62
  63#endif
  64