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-rw-r--r--net/tipc/addr.c91
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diff --git a/net/tipc/addr.c b/net/tipc/addr.c
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1/*
2 * net/tipc/addr.c: 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#include "core.h"
35#include "dbg.h"
36#include "addr.h"
37#include "zone.h"
38#include "cluster.h"
39#include "net.h"
40
41u32 tipc_get_addr(void)
42{
43 return tipc_own_addr;
44}
45
46/**
47 * addr_domain_valid - validates a network domain address
48 *
49 * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
50 * where Z, C, and N are non-zero and do not exceed the configured limits.
51 *
52 * Returns 1 if domain address is valid, otherwise 0
53 */
54
55int addr_domain_valid(u32 addr)
56{
57 u32 n = tipc_node(addr);
58 u32 c = tipc_cluster(addr);
59 u32 z = tipc_zone(addr);
60 u32 max_nodes = tipc_max_nodes;
61
62 if (is_slave(addr))
63 max_nodes = LOWEST_SLAVE + tipc_max_slaves;
64 if (n > max_nodes)
65 return 0;
66 if (c > tipc_max_clusters)
67 return 0;
68 if (z > tipc_max_zones)
69 return 0;
70
71 if (n && (!z || !c))
72 return 0;
73 if (c && !z)
74 return 0;
75 return 1;
76}
77
78/**
79 * addr_node_valid - validates a proposed network address for this node
80 *
81 * Accepts <Z.C.N>, where Z, C, and N are non-zero and do not exceed
82 * the configured limits.
83 *
84 * Returns 1 if address can be used, otherwise 0
85 */
86
87int addr_node_valid(u32 addr)
88{
89 return (addr_domain_valid(addr) && tipc_node(addr));
90}
91