net/tipc/addr.h

   1 /*
   2  * net/tipc/addr.h: Include file for TIPC address utility routines
   3  *
   4  * Copyright (c) 2000-2006, 2018, Ericsson AB
   5  * Copyright (c) 2004-2005, 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 #ifndef _TIPC_ADDR_H
  38 #define _TIPC_ADDR_H
  39
  40 #include <linux/types.h>
  41 #include <linux/tipc.h>
  42 #include <net/net_namespace.h>
  43 #include <net/netns/generic.h>
  44 #include "core.h"
  45
  46 static inline u32 tipc_own_addr(struct net *net)
  47 {
  48         return tipc_net(net)->node_addr;
  49 }
  50
  51 static inline u8 *tipc_own_id(struct net *net)
  52 {
  53         struct tipc_net *tn = tipc_net(net);
  54
  55         if (!strlen(tn->node_id_string))
  56                 return NULL;
  57         return tn->node_id;
  58 }
  59
  60 static inline char *tipc_own_id_string(struct net *net)
  61 {
  62         return tipc_net(net)->node_id_string;
  63 }
  64
  65 static inline u32 tipc_cluster_mask(u32 addr)
  66 {
  67         return addr & TIPC_ZONE_CLUSTER_MASK;
  68 }
  69
  70 static inline int tipc_node2scope(u32 node)
  71 {
  72         return node ? TIPC_NODE_SCOPE : TIPC_CLUSTER_SCOPE;
  73 }
  74
  75 static inline int tipc_scope2node(struct net *net, int sc)
  76 {
  77         return sc != TIPC_NODE_SCOPE ? 0 : tipc_own_addr(net);
  78 }
  79
  80 static inline int in_own_node(struct net *net, u32 addr)
  81 {
  82         return addr == tipc_own_addr(net) || !addr;
  83 }
  84
  85 bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr);
  86 void tipc_set_node_id(struct net *net, u8 *id);
  87 void tipc_set_node_addr(struct net *net, u32 addr);
  88 char *tipc_nodeid2string(char *str, u8 *id);
  89 u32 tipc_node_id2hash(u8 *id128);
  90
  91 #endif