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 } 125