Linux kernel mirror (for testing)
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1/*
2 * net/tipc/addr.h: Include file for TIPC address utility routines
3 *
4 * Copyright (c) 2000-2006, Ericsson AB
5 * Copyright (c) 2004-2005, 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_ADDR_H
38#define _TIPC_ADDR_H
39
40#include "core.h"
41
42#define TIPC_ZONE_MASK 0xff000000u
43#define TIPC_CLUSTER_MASK 0xfffff000u
44
45static inline u32 tipc_zone_mask(u32 addr)
46{
47 return addr & TIPC_ZONE_MASK;
48}
49
50static inline u32 tipc_cluster_mask(u32 addr)
51{
52 return addr & TIPC_CLUSTER_MASK;
53}
54
55static inline int in_own_cluster_exact(u32 addr)
56{
57 return !((addr ^ tipc_own_addr) >> 12);
58}
59
60/**
61 * in_own_node - test for node inclusion; <0.0.0> always matches
62 */
63static inline int in_own_node(u32 addr)
64{
65 return (addr == tipc_own_addr) || !addr;
66}
67
68/**
69 * in_own_cluster - test for cluster inclusion; <0.0.0> always matches
70 */
71static inline int in_own_cluster(u32 addr)
72{
73 return in_own_cluster_exact(addr) || !addr;
74}
75
76/**
77 * addr_domain - convert 2-bit scope value to equivalent message lookup domain
78 *
79 * Needed when address of a named message must be looked up a second time
80 * after a network hop.
81 */
82static inline u32 addr_domain(u32 sc)
83{
84 if (likely(sc == TIPC_NODE_SCOPE))
85 return tipc_own_addr;
86 if (sc == TIPC_CLUSTER_SCOPE)
87 return tipc_cluster_mask(tipc_own_addr);
88 return tipc_zone_mask(tipc_own_addr);
89}
90
91int tipc_addr_domain_valid(u32);
92int tipc_addr_node_valid(u32 addr);
93int tipc_in_scope(u32 domain, u32 addr);
94int tipc_addr_scope(u32 domain);
95char *tipc_addr_string_fill(char *string, u32 addr);
96#endif