Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/addr.c: TIPC address utility routines | |
c4307285 | 3 | * |
593a5f22 | 4 | * Copyright (c) 2000-2006, Ericsson AB |
b97bf3fd | 5 | * Copyright (c) 2004-2005, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
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. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
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 | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #include "core.h" | |
38 | #include "dbg.h" | |
39 | #include "addr.h" | |
40 | #include "zone.h" | |
41 | #include "cluster.h" | |
42 | #include "net.h" | |
43 | ||
b97bf3fd | 44 | /** |
4323add6 | 45 | * tipc_addr_domain_valid - validates a network domain address |
c4307285 YH |
46 | * |
47 | * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>, | |
b97bf3fd | 48 | * where Z, C, and N are non-zero and do not exceed the configured limits. |
c4307285 | 49 | * |
b97bf3fd PL |
50 | * Returns 1 if domain address is valid, otherwise 0 |
51 | */ | |
52 | ||
4323add6 | 53 | int tipc_addr_domain_valid(u32 addr) |
b97bf3fd PL |
54 | { |
55 | u32 n = tipc_node(addr); | |
56 | u32 c = tipc_cluster(addr); | |
57 | u32 z = tipc_zone(addr); | |
58 | u32 max_nodes = tipc_max_nodes; | |
59 | ||
60 | if (is_slave(addr)) | |
61 | max_nodes = LOWEST_SLAVE + tipc_max_slaves; | |
62 | if (n > max_nodes) | |
63 | return 0; | |
64 | if (c > tipc_max_clusters) | |
65 | return 0; | |
66 | if (z > tipc_max_zones) | |
67 | return 0; | |
68 | ||
69 | if (n && (!z || !c)) | |
70 | return 0; | |
71 | if (c && !z) | |
72 | return 0; | |
73 | return 1; | |
74 | } | |
75 | ||
76 | /** | |
4323add6 | 77 | * tipc_addr_node_valid - validates a proposed network address for this node |
c4307285 YH |
78 | * |
79 | * Accepts <Z.C.N>, where Z, C, and N are non-zero and do not exceed | |
b97bf3fd | 80 | * the configured limits. |
c4307285 | 81 | * |
b97bf3fd PL |
82 | * Returns 1 if address can be used, otherwise 0 |
83 | */ | |
84 | ||
4323add6 | 85 | int tipc_addr_node_valid(u32 addr) |
b97bf3fd | 86 | { |
a02cec21 | 87 | return tipc_addr_domain_valid(addr) && tipc_node(addr); |
b97bf3fd PL |
88 | } |
89 | ||
80e0c330 AS |
90 | int tipc_in_scope(u32 domain, u32 addr) |
91 | { | |
92 | if (!domain || (domain == addr)) | |
93 | return 1; | |
94 | if (domain == (addr & 0xfffff000u)) /* domain <Z.C.0> */ | |
95 | return 1; | |
96 | if (domain == (addr & 0xff000000u)) /* domain <Z.0.0> */ | |
97 | return 1; | |
98 | return 0; | |
99 | } | |
100 | ||
101 | /** | |
102 | * tipc_addr_scope - convert message lookup domain to a 2-bit scope value | |
103 | */ | |
104 | ||
105 | int tipc_addr_scope(u32 domain) | |
106 | { | |
107 | if (likely(!domain)) | |
108 | return TIPC_ZONE_SCOPE; | |
109 | if (tipc_node(domain)) | |
110 | return TIPC_NODE_SCOPE; | |
111 | if (tipc_cluster(domain)) | |
112 | return TIPC_CLUSTER_SCOPE; | |
113 | return TIPC_ZONE_SCOPE; | |
114 | } | |
115 | ||
116 | char *tipc_addr_string_fill(char *string, u32 addr) | |
117 | { | |
118 | snprintf(string, 16, "<%u.%u.%u>", | |
119 | tipc_zone(addr), tipc_cluster(addr), tipc_node(addr)); | |
120 | return string; | |
121 | } |