LXR linux/net/tipc/bcast.h

   1/*
   2 * net/tipc/bcast.h: Include file for TIPC broadcast code
   3 *
   4 * Copyright (c) 2003-2006, 2014, Ericsson AB
   5 * Copyright (c) 2005, 2010-2011, 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_BCAST_H
  38#define _TIPC_BCAST_H
  39
  40#define MAX_NODES 4096
  41#define WSIZE 32
  42#define TIPC_BCLINK_RESET 1
  43
  44/**
  45 * struct tipc_node_map - set of node identifiers
  46 * @count: # of nodes in set
  47 * @map: bitmap of node identifiers that are in the set
  48 */
  49struct tipc_node_map {
  50        u32 count;
  51        u32 map[MAX_NODES / WSIZE];
  52};
  53
  54#define PLSIZE 32
  55
  56/**
  57 * struct tipc_port_list - set of node local destination ports
  58 * @count: # of ports in set (only valid for first entry in list)
  59 * @next: pointer to next entry in list
  60 * @ports: array of port references
  61 */
  62struct tipc_port_list {
  63        int count;
  64        struct tipc_port_list *next;
  65        u32 ports[PLSIZE];
  66};
  67
  68
  69struct tipc_node;
  70
  71extern const char tipc_bclink_name[];
  72
  73/**
  74 * tipc_nmap_equal - test for equality of node maps
  75 */
  76static inline int tipc_nmap_equal(struct tipc_node_map *nm_a,
  77                                  struct tipc_node_map *nm_b)
  78{
  79        return !memcmp(nm_a, nm_b, sizeof(*nm_a));
  80}
  81
  82void tipc_port_list_add(struct tipc_port_list *pl_ptr, u32 port);
  83void tipc_port_list_free(struct tipc_port_list *pl_ptr);
  84
  85int tipc_bclink_init(void);
  86void tipc_bclink_stop(void);
  87void tipc_bclink_set_flags(unsigned int flags);
  88void tipc_bclink_add_node(u32 addr);
  89void tipc_bclink_remove_node(u32 addr);
  90struct tipc_node *tipc_bclink_retransmit_to(void);
  91void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked);
  92void tipc_bclink_rcv(struct sk_buff *buf);
  93u32  tipc_bclink_get_last_sent(void);
  94u32  tipc_bclink_acks_missing(struct tipc_node *n_ptr);
  95void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent);
  96int  tipc_bclink_stats(char *stats_buf, const u32 buf_size);
  97int  tipc_bclink_reset_stats(void);
  98int  tipc_bclink_set_queue_limits(u32 limit);
  99void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action);
 100uint  tipc_bclink_get_mtu(void);
 101int tipc_bclink_xmit(struct sk_buff *buf);
 102void tipc_bclink_wakeup_users(void);
 103#endif
 104