Root/net/tipc/zone.h

1/*
2 * net/tipc/zone.h: Include file for TIPC zone management routines
3 *
4 * Copyright (c) 2000-2006, Ericsson AB
5 * Copyright (c) 2005-2006, 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_ZONE_H
38#define _TIPC_ZONE_H
39
40#include "node_subscr.h"
41#include "net.h"
42
43
44/**
45 * struct _zone - TIPC zone structure
46 * @addr: network address of zone
47 * @clusters: array of pointers to all clusters within zone
48 * @links: number of (unicast) links to zone
49 */
50
51struct _zone {
52    u32 addr;
53    struct cluster *clusters[2]; /* currently limited to just 1 cluster */
54    u32 links;
55};
56
57struct tipc_node *tipc_zone_select_remote_node(struct _zone *z_ptr, u32 addr, u32 ref);
58u32 tipc_zone_select_router(struct _zone *z_ptr, u32 addr, u32 ref);
59void tipc_zone_remove_as_router(struct _zone *z_ptr, u32 router);
60void tipc_zone_send_external_routes(struct _zone *z_ptr, u32 dest);
61struct _zone *tipc_zone_create(u32 addr);
62void tipc_zone_delete(struct _zone *z_ptr);
63void tipc_zone_attach_cluster(struct _zone *z_ptr, struct cluster *c_ptr);
64u32 tipc_zone_next_node(u32 addr);
65
66static inline struct _zone *tipc_zone_find(u32 addr)
67{
68    return tipc_net.zones[tipc_zone(addr)];
69}
70
71#endif
72

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