1 /*
2 * net/tipc/addr.c: TIPC address utility routines
3 *
4 * Copyright (c) 2000-2006, 2018, 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 "addr.h"
38 #include "core.h"
39
40 bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr)
41 {
42 if (!domain || (domain == addr))
43 return true;
44 if (!legacy_format)
45 return false;
46 if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */
47 return true;
48 if (domain == (addr & TIPC_ZONE_CLUSTER_MASK)) /* domain <Z.C.0> */
49 return true;
50 if (domain == (addr & TIPC_ZONE_MASK)) /* domain <Z.0.0> */
51 return true;
52 return false;
53 }
54
55 void tipc_set_node_id(struct net *net, u8 *id)
56 {
57 struct tipc_net *tn = tipc_net(net);
58 u32 *tmp = (u32 *)id;
59
60 memcpy(tn->node_id, id, NODE_ID_LEN);
61 tipc_nodeid2string(tn->node_id_string, id);
62 tn->trial_addr = tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3];
63 pr_info("Own node identity %s, cluster identity %u\n",
64 tipc_own_id_string(net), tn->net_id);
65 }
66
67 void tipc_set_node_addr(struct net *net, u32 addr)
68 {
69 struct tipc_net *tn = tipc_net(net);
70 u8 node_id[NODE_ID_LEN] = {0,};
71
72 tn->node_addr = addr;
73 if (!tipc_own_id(net)) {
74 sprintf(node_id, "%x", addr);
75 tipc_set_node_id(net, node_id);
76 }
77 tn->trial_addr = addr;
78 tn->addr_trial_end = jiffies;
79 pr_info("32-bit node address hash set to %x\n", addr);
80 }
81
82 char *tipc_nodeid2string(char *str, u8 *id)
83 {
84 int i;
85 u8 c;
86
87 /* Already a string ? */
88 for (i = 0; i < NODE_ID_LEN; i++) {
89 c = id[i];
90 if (c >= '0' && c <= '9')
91 continue;
92 if (c >= 'A' && c <= 'Z')
93 continue;
94 if (c >= 'a' && c <= 'z')
95 continue;
96 if (c == '.')
97 continue;
98 if (c == ':')
99 continue;
100 if (c == '_')
101 continue;
102 if (c == '-')
103 continue;
104 if (c == '@')
105 continue;
106 if (c != 0)
107 break;
108 }
109 if (i == NODE_ID_LEN) {
110 memcpy(str, id, NODE_ID_LEN);
111 str[NODE_ID_LEN] = 0;
112 return str;
113 }
114
115 /* Translate to hex string */
116 for (i = 0; i < NODE_ID_LEN; i++)
117 sprintf(&str[2 * i], "%02x", id[i]);
118
119 /* Strip off trailing zeroes */
120 for (i = NODE_ID_STR_LEN - 2; str[i] == '0'; i--)
121 str[i] = 0;
122
123 return str;
124 }