linux/net/tipc/cluster.h
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   1/*
   2 * net/tipc/cluster.h: Include file for TIPC cluster management routines
   3 *
   4 * Copyright (c) 2000-2006, 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_CLUSTER_H
  38#define _TIPC_CLUSTER_H
  39
  40#include "addr.h"
  41#include "zone.h"
  42
  43#define LOWEST_SLAVE  2048u
  44
  45/**
  46 * struct cluster - TIPC cluster structure
  47 * @addr: network address of cluster
  48 * @owner: pointer to zone that cluster belongs to
  49 * @nodes: array of pointers to all nodes within cluster
  50 * @highest_node: id of highest numbered node within cluster
  51 * @highest_slave: (used for secondary node support)
  52 */
  53
  54struct cluster {
  55        u32 addr;
  56        struct _zone *owner;
  57        struct tipc_node **nodes;
  58        u32 highest_node;
  59        u32 highest_slave;
  60};
  61
  62
  63extern struct tipc_node **tipc_local_nodes;
  64extern u32 tipc_highest_allowed_slave;
  65extern struct tipc_node_map tipc_cltr_bcast_nodes;
  66
  67void tipc_cltr_remove_as_router(struct cluster *c_ptr, u32 router);
  68void tipc_cltr_send_ext_routes(struct cluster *c_ptr, u32 dest);
  69struct tipc_node *tipc_cltr_select_node(struct cluster *c_ptr, u32 selector);
  70u32 tipc_cltr_select_router(struct cluster *c_ptr, u32 ref);
  71void tipc_cltr_recv_routing_table(struct sk_buff *buf);
  72struct cluster *tipc_cltr_create(u32 addr);
  73void tipc_cltr_delete(struct cluster *c_ptr);
  74void tipc_cltr_attach_node(struct cluster *c_ptr, struct tipc_node *n_ptr);
  75void tipc_cltr_send_slave_routes(struct cluster *c_ptr, u32 dest);
  76void tipc_cltr_broadcast(struct sk_buff *buf);
  77int tipc_cltr_init(void);
  78u32 tipc_cltr_next_node(struct cluster *c_ptr, u32 addr);
  79void tipc_cltr_bcast_new_route(struct cluster *c_ptr, u32 dest, u32 lo, u32 hi);
  80void tipc_cltr_send_local_routes(struct cluster *c_ptr, u32 dest);
  81void tipc_cltr_bcast_lost_route(struct cluster *c_ptr, u32 dest, u32 lo, u32 hi);
  82
  83static inline struct cluster *tipc_cltr_find(u32 addr)
  84{
  85        struct _zone *z_ptr = tipc_zone_find(addr);
  86
  87        if (z_ptr)
  88                return z_ptr->clusters[1];
  89        return NULL;
  90}
  91
  92#endif
  93
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