125 lines
3.7 KiB
C
Executable file
125 lines
3.7 KiB
C
Executable file
/*
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* net/tipc/addr.c: TIPC address utility routines
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*
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* Copyright (c) 2000-2006, 2018, Ericsson AB
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* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "addr.h"
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#include "core.h"
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bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr)
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{
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if (!domain || (domain == addr))
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return true;
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if (!legacy_format)
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return false;
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if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */
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return true;
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if (domain == (addr & TIPC_ZONE_CLUSTER_MASK)) /* domain <Z.C.0> */
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return true;
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if (domain == (addr & TIPC_ZONE_MASK)) /* domain <Z.0.0> */
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return true;
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return false;
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}
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void tipc_set_node_id(struct net *net, u8 *id)
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{
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struct tipc_net *tn = tipc_net(net);
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u32 *tmp = (u32 *)id;
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memcpy(tn->node_id, id, NODE_ID_LEN);
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tipc_nodeid2string(tn->node_id_string, id);
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tn->trial_addr = tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3];
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pr_info("Own node identity %s, cluster identity %u\n",
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tipc_own_id_string(net), tn->net_id);
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}
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void tipc_set_node_addr(struct net *net, u32 addr)
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{
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struct tipc_net *tn = tipc_net(net);
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u8 node_id[NODE_ID_LEN] = {0,};
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tn->node_addr = addr;
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if (!tipc_own_id(net)) {
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sprintf(node_id, "%x", addr);
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tipc_set_node_id(net, node_id);
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}
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tn->trial_addr = addr;
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tn->addr_trial_end = jiffies;
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pr_info("32-bit node address hash set to %x\n", addr);
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}
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char *tipc_nodeid2string(char *str, u8 *id)
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{
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int i;
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u8 c;
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/* Already a string ? */
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for (i = 0; i < NODE_ID_LEN; i++) {
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c = id[i];
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if (c >= '0' && c <= '9')
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continue;
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if (c >= 'A' && c <= 'Z')
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continue;
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if (c >= 'a' && c <= 'z')
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continue;
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if (c == '.')
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continue;
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if (c == ':')
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continue;
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if (c == '_')
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continue;
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if (c == '-')
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continue;
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if (c == '@')
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continue;
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if (c != 0)
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break;
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}
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if (i == NODE_ID_LEN) {
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memcpy(str, id, NODE_ID_LEN);
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str[NODE_ID_LEN] = 0;
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return str;
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}
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/* Translate to hex string */
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for (i = 0; i < NODE_ID_LEN; i++)
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sprintf(&str[2 * i], "%02x", id[i]);
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/* Strip off trailing zeroes */
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for (i = NODE_ID_STR_LEN - 2; str[i] == '0'; i--)
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str[i] = 0;
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return str;
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}
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