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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
40/**
41 * tipc_addr_domain_valid - validates a network domain address
42 *
43 * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
44 * where Z, C, and N are non-zero.
45 *
46 * Returns 1 if domain address is valid, otherwise 0
47 */
48int tipc_addr_domain_valid(u32 addr)
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
61/**
62 * tipc_addr_node_valid - validates a proposed network address for this node
63 *
64 * Accepts <Z.C.N>, where Z, C, and N are non-zero.
65 *
66 * Returns 1 if address can be used, otherwise 0
67 */
68int tipc_addr_node_valid(u32 addr)
69{
70 return tipc_addr_domain_valid(addr) && tipc_node(addr);
71}
72
73int 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
84/**
85 * tipc_addr_scope - convert message lookup domain to a 2-bit scope value
86 */
87int 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
98char *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}
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
40/**
41 * tipc_addr_domain_valid - validates a network domain address
42 *
43 * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
44 * where Z, C, and N are non-zero.
45 *
46 * Returns 1 if domain address is valid, otherwise 0
47 */
48
49int tipc_addr_domain_valid(u32 addr)
50{
51 u32 n = tipc_node(addr);
52 u32 c = tipc_cluster(addr);
53 u32 z = tipc_zone(addr);
54
55 if (n && (!z || !c))
56 return 0;
57 if (c && !z)
58 return 0;
59 return 1;
60}
61
62/**
63 * tipc_addr_node_valid - validates a proposed network address for this node
64 *
65 * Accepts <Z.C.N>, where Z, C, and N are non-zero.
66 *
67 * Returns 1 if address can be used, otherwise 0
68 */
69
70int tipc_addr_node_valid(u32 addr)
71{
72 return tipc_addr_domain_valid(addr) && tipc_node(addr);
73}
74
75int tipc_in_scope(u32 domain, u32 addr)
76{
77 if (!domain || (domain == addr))
78 return 1;
79 if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */
80 return 1;
81 if (domain == tipc_zone_mask(addr)) /* domain <Z.0.0> */
82 return 1;
83 return 0;
84}
85
86/**
87 * tipc_addr_scope - convert message lookup domain to a 2-bit scope value
88 */
89
90int tipc_addr_scope(u32 domain)
91{
92 if (likely(!domain))
93 return TIPC_ZONE_SCOPE;
94 if (tipc_node(domain))
95 return TIPC_NODE_SCOPE;
96 if (tipc_cluster(domain))
97 return TIPC_CLUSTER_SCOPE;
98 return TIPC_ZONE_SCOPE;
99}
100
101char *tipc_addr_string_fill(char *string, u32 addr)
102{
103 snprintf(string, 16, "<%u.%u.%u>",
104 tipc_zone(addr), tipc_cluster(addr), tipc_node(addr));
105 return string;
106}