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authorPer Liden <per.liden@nospam.ericsson.com>2006-01-02 13:04:38 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-12 17:06:31 -0500
commitb97bf3fd8f6a16966d4f18983b2c40993ff937d4 (patch)
tree59959f8a0f3087455efdcb430846686f303c5991 /net/tipc/addr.h
parent58cba4650a7a414eabd2b40cc9d8e45fcdf192d9 (diff)
[TIPC] Initial merge
TIPC (Transparent Inter Process Communication) is a protocol designed for intra cluster communication. For more information see http://tipc.sourceforge.net Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
Diffstat (limited to 'net/tipc/addr.h')
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1 files changed, 125 insertions, 0 deletions
diff --git a/net/tipc/addr.h b/net/tipc/addr.h
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1/*
2 * net/tipc/addr.h: Include file for TIPC address utility routines
3 *
4 * Copyright (c) 2003-2005, Ericsson Research Canada
5 * Copyright (c) 2004-2005, Wind River Systems
6 * Copyright (c) 2005-2006, Ericsson AB
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 * Redistributions of source code must retain the above copyright notice, this
13 * list of conditions and the following disclaimer.
14 * Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * Neither the names of the copyright holders nor the names of its
18 * contributors may be used to endorse or promote products derived from this
19 * software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef _TIPC_ADDR_H
35#define _TIPC_ADDR_H
36
37static inline u32 own_node(void)
38{
39 return tipc_node(tipc_own_addr);
40}
41
42static inline u32 own_cluster(void)
43{
44 return tipc_cluster(tipc_own_addr);
45}
46
47static inline u32 own_zone(void)
48{
49 return tipc_zone(tipc_own_addr);
50}
51
52static inline int in_own_cluster(u32 addr)
53{
54 return !((addr ^ tipc_own_addr) >> 12);
55}
56
57static inline int in_own_zone(u32 addr)
58{
59 return !((addr ^ tipc_own_addr) >> 24);
60}
61
62static inline int is_slave(u32 addr)
63{
64 return addr & 0x800;
65}
66
67static inline int may_route(u32 addr)
68{
69 return(addr ^ tipc_own_addr) >> 11;
70}
71
72static inline int in_scope(u32 domain, u32 addr)
73{
74 if (!domain || (domain == addr))
75 return 1;
76 if (domain == (addr & 0xfffff000u)) /* domain <Z.C.0> */
77 return 1;
78 if (domain == (addr & 0xff000000u)) /* domain <Z.0.0> */
79 return 1;
80 return 0;
81}
82
83/**
84 * addr_scope - convert message lookup domain to equivalent 2-bit scope value
85 */
86
87static inline int addr_scope(u32 domain)
88{
89 if (likely(!domain))
90 return TIPC_ZONE_SCOPE;
91 if (tipc_node(domain))
92 return TIPC_NODE_SCOPE;
93 if (tipc_cluster(domain))
94 return TIPC_CLUSTER_SCOPE;
95 return TIPC_ZONE_SCOPE;
96}
97
98/**
99 * addr_domain - convert 2-bit scope value to equivalent message lookup domain
100 *
101 * Needed when address of a named message must be looked up a second time
102 * after a network hop.
103 */
104
105static inline int addr_domain(int sc)
106{
107 if (likely(sc == TIPC_NODE_SCOPE))
108 return tipc_own_addr;
109 if (sc == TIPC_CLUSTER_SCOPE)
110 return tipc_addr(tipc_zone(tipc_own_addr),
111 tipc_cluster(tipc_own_addr), 0);
112 return tipc_addr(tipc_zone(tipc_own_addr), 0, 0);
113}
114
115static inline char *addr_string_fill(char *string, u32 addr)
116{
117 snprintf(string, 16, "<%u.%u.%u>",
118 tipc_zone(addr), tipc_cluster(addr), tipc_node(addr));
119 return string;
120}
121
122int addr_domain_valid(u32);
123int addr_node_valid(u32 addr);
124
125#endif