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  * Copyright (c) 2020, Red Hat Inc
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the names of the copyright holders nor the names of its
  18  *    contributors may be used to endorse or promote products derived from
  19  *    this software without specific prior written permission.
  20  *
  21  * Alternatively, this software may be distributed under the terms of the
  22  * GNU General Public License ("GPL") version 2 as published by the Free
  23  * Software Foundation.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  26  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  29  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #ifndef _TIPC_ADDR_H
  39 #define _TIPC_ADDR_H
  40
  41 #include <linux/types.h>
  42 #include <linux/tipc.h>
  43 #include <net/net_namespace.h>
  44 #include <net/netns/generic.h>
  45 #include "core.h"
  46
  47 static inline u32 tipc_own_addr(struct net *net)
  48 {
  49         return tipc_net(net)->node_addr;
  50 }
  51
  52 static inline u8 *tipc_own_id(struct net *net)
  53 {
  54         struct tipc_net *tn = tipc_net(net);
  55
  56         if (!strlen(tn->node_id_string))
  57                 return NULL;
  58         return tn->node_id;
  59 }
  60
  61 static inline char *tipc_own_id_string(struct net *net)
  62 {
  63         return tipc_net(net)->node_id_string;
  64 }
  65
  66 static inline u32 tipc_cluster_mask(u32 addr)
  67 {
  68         return addr & TIPC_ZONE_CLUSTER_MASK;
  69 }
  70
  71 static inline int tipc_node2scope(u32 node)
  72 {
  73         return node ? TIPC_NODE_SCOPE : TIPC_CLUSTER_SCOPE;
  74 }
  75
  76 static inline int tipc_scope2node(struct net *net, int sc)
  77 {
  78         return sc != TIPC_NODE_SCOPE ? 0 : tipc_own_addr(net);
  79 }
  80
  81 static inline int in_own_node(struct net *net, u32 addr)
  82 {
  83         return addr == tipc_own_addr(net) || !addr;
  84 }
  85
  86 bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr);
  87 void tipc_set_node_id(struct net *net, u8 *id);
  88 void tipc_set_node_addr(struct net *net, u32 addr);
  89 char *tipc_nodeid2string(char *str, u8 *id);
  90 u32 tipc_node_id2hash(u8 *id128);
  91
  92 #endif