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[mirror_ubuntu-jammy-kernel.git] / net / tipc / addr.c
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1/*
2 * net/tipc/addr.c: TIPC address utility routines
c4307285 3 *
d50ccc2d 4 * Copyright (c) 2000-2006, 2018, Ericsson AB
f831c963 5 * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
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6 * All rights reserved.
7 *
9ea1fd3c 8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
10 *
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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 *
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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
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34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
8f92df6a 37#include "addr.h"
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38#include "core.h"
39
b89afb11 40bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr)
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41{
42 if (!domain || (domain == addr))
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43 return true;
44 if (!legacy_format)
45 return false;
a3796f89 46 if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */
b89afb11 47 return true;
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48 if (domain == (addr & TIPC_ZONE_CLUSTER_MASK)) /* domain <Z.C.0> */
49 return true;
20263641 50 if (domain == (addr & TIPC_ZONE_MASK)) /* domain <Z.0.0> */
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51 return true;
52 return false;
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53}
54
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55void tipc_set_node_id(struct net *net, u8 *id)
56{
57 struct tipc_net *tn = tipc_net(net);
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58
59 memcpy(tn->node_id, id, NODE_ID_LEN);
60 tipc_nodeid2string(tn->node_id_string, id);
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61 tn->trial_addr = hash128to32(id);
62 pr_info("Node identity %s, cluster identity %u\n",
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63 tipc_own_id_string(net), tn->net_id);
64}
65
66void tipc_set_node_addr(struct net *net, u32 addr)
80e0c330 67{
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68 struct tipc_net *tn = tipc_net(net);
69 u8 node_id[NODE_ID_LEN] = {0,};
70
71 tn->node_addr = addr;
72 if (!tipc_own_id(net)) {
73 sprintf(node_id, "%x", addr);
74 tipc_set_node_id(net, node_id);
75 }
25b0b9c4 76 tn->trial_addr = addr;
8874ecae 77 tn->addr_trial_end = jiffies;
5f75e0a0 78 pr_info("Node number set to %u\n", addr);
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79}
80
81char *tipc_nodeid2string(char *str, u8 *id)
82{
83 int i;
84 u8 c;
85
86 /* Already a string ? */
87 for (i = 0; i < NODE_ID_LEN; i++) {
88 c = id[i];
89 if (c >= '0' && c <= '9')
90 continue;
91 if (c >= 'A' && c <= 'Z')
92 continue;
93 if (c >= 'a' && c <= 'z')
94 continue;
95 if (c == '.')
96 continue;
97 if (c == ':')
98 continue;
99 if (c == '_')
100 continue;
101 if (c == '-')
102 continue;
103 if (c == '@')
104 continue;
105 if (c != 0)
106 break;
107 }
108 if (i == NODE_ID_LEN) {
109 memcpy(str, id, NODE_ID_LEN);
110 str[NODE_ID_LEN] = 0;
111 return str;
112 }
113
114 /* Translate to hex string */
115 for (i = 0; i < NODE_ID_LEN; i++)
116 sprintf(&str[2 * i], "%02x", id[i]);
117
118 /* Strip off trailing zeroes */
119 for (i = NODE_ID_STR_LEN - 2; str[i] == '0'; i--)
120 str[i] = 0;
121
122 return str;
80e0c330 123}