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addr.c
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1 /*
2  * net/tipc/addr.c: TIPC address utility routines
3  *
4  * Copyright (c) 2000-2006, Ericsson AB
5  * Copyright (c) 2004-2005, 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 #include "core.h"
38 #include "addr.h"
39 
49 {
50  u32 n = tipc_node(addr);
51  u32 c = tipc_cluster(addr);
52  u32 z = tipc_zone(addr);
53 
54  if (n && (!z || !c))
55  return 0;
56  if (c && !z)
57  return 0;
58  return 1;
59 }
60 
69 {
70  return tipc_addr_domain_valid(addr) && tipc_node(addr);
71 }
72 
73 int tipc_in_scope(u32 domain, u32 addr)
74 {
75  if (!domain || (domain == addr))
76  return 1;
77  if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */
78  return 1;
79  if (domain == tipc_zone_mask(addr)) /* domain <Z.0.0> */
80  return 1;
81  return 0;
82 }
83 
87 int tipc_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 char *tipc_addr_string_fill(char *string, u32 addr)
99 {
100  snprintf(string, 16, "<%u.%u.%u>",
101  tipc_zone(addr), tipc_cluster(addr), tipc_node(addr));
102  return string;
103 }