include/linux/tipc.h

   1 /*
   2  * include/linux/tipc.h: Include file for TIPC socket interface
   3  *
   4  * Copyright (c) 2003-2006, Ericsson AB
   5  * Copyright (c) 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 _LINUX_TIPC_H_
  38 #define _LINUX_TIPC_H_
  39
  40 #include <linux/types.h>
  41
  42 /*
  43  * TIPC addressing primitives
  44  */
  45
  46 struct tipc_portid {
  47         __u32 ref;
  48         __u32 node;
  49 };
  50
  51 struct tipc_name {
  52         __u32 type;
  53         __u32 instance;
  54 };
  55
  56 struct tipc_name_seq {
  57         __u32 type;
  58         __u32 lower;
  59         __u32 upper;
  60 };
  61
  62 static inline __u32 tipc_addr(unsigned int zone,
  63                               unsigned int cluster,
  64                               unsigned int node)
  65 {
  66         return (zone << 24) | (cluster << 12) | node;
  67 }
  68
  69 static inline unsigned int tipc_zone(__u32 addr)
  70 {
  71         return addr >> 24;
  72 }
  73
  74 static inline unsigned int tipc_cluster(__u32 addr)
  75 {
  76         return (addr >> 12) & 0xfff;
  77 }
  78
  79 static inline unsigned int tipc_node(__u32 addr)
  80 {
  81         return addr & 0xfff;
  82 }
  83
  84 /*
  85  * Application-accessible port name types
  86  */
  87
  88 #define TIPC_CFG_SRV            0       /* configuration service name type */
  89 #define TIPC_TOP_SRV            1       /* topology service name type */
  90 #define TIPC_RESERVED_TYPES     64      /* lowest user-publishable name type */
  91
  92 /*
  93  * Publication scopes when binding port names and port name sequences
  94  */
  95
  96 #define TIPC_ZONE_SCOPE         1
  97 #define TIPC_CLUSTER_SCOPE      2
  98 #define TIPC_NODE_SCOPE         3
  99
 100 /*
 101  * Limiting values for messages
 102  */
 103
 104 #define TIPC_MAX_USER_MSG_SIZE  66000
 105
 106 /*
 107  * Message importance levels
 108  */
 109
 110 #define TIPC_LOW_IMPORTANCE             0
 111 #define TIPC_MEDIUM_IMPORTANCE          1
 112 #define TIPC_HIGH_IMPORTANCE            2
 113 #define TIPC_CRITICAL_IMPORTANCE        3
 114
 115 /*
 116  * Msg rejection/connection shutdown reasons
 117  */
 118
 119 #define TIPC_OK                 0
 120 #define TIPC_ERR_NO_NAME        1
 121 #define TIPC_ERR_NO_PORT        2
 122 #define TIPC_ERR_NO_NODE        3
 123 #define TIPC_ERR_OVERLOAD       4
 124 #define TIPC_CONN_SHUTDOWN      5
 125
 126 /*
 127  * TIPC topology subscription service definitions
 128  */
 129
 130 #define TIPC_SUB_SERVICE        0x00    /* Filter for service availability    */
 131 #define TIPC_SUB_PORTS          0x01    /* Filter for port availability  */
 132 #define TIPC_SUB_CANCEL         0x04    /* Cancel a subscription         */
 133
 134 #define TIPC_WAIT_FOREVER       ~0      /* timeout for permanent subscription */
 135
 136 struct tipc_subscr {
 137         struct tipc_name_seq seq;       /* NBO. Name sequence of interest */
 138         __u32 timeout;                  /* NBO. Subscription duration (in ms) */
 139         __u32 filter;                   /* NBO. Bitmask of filter options */
 140         char usr_handle[8];             /* Opaque. Available for subscriber use */
 141 };
 142
 143 #define TIPC_PUBLISHED          1       /* publication event */
 144 #define TIPC_WITHDRAWN          2       /* withdraw event */
 145 #define TIPC_SUBSCR_TIMEOUT     3       /* subscription timeout event */
 146
 147 struct tipc_event {
 148         __u32 event;                    /* NBO. Event type, as defined above */
 149         __u32 found_lower;              /* NBO. Matching name seq instances  */
 150         __u32 found_upper;              /*  "      "       "   "    "        */
 151         struct tipc_portid port;        /* NBO. Associated port              */
 152         struct tipc_subscr s;           /* Original, associated subscription */
 153 };
 154
 155 /*
 156  * Socket API
 157  */
 158
 159 #ifndef AF_TIPC
 160 #define AF_TIPC         30
 161 #endif
 162
 163 #ifndef PF_TIPC
 164 #define PF_TIPC         AF_TIPC
 165 #endif
 166
 167 #ifndef SOL_TIPC
 168 #define SOL_TIPC        271
 169 #endif
 170
 171 #define TIPC_ADDR_NAMESEQ       1
 172 #define TIPC_ADDR_MCAST         1
 173 #define TIPC_ADDR_NAME          2
 174 #define TIPC_ADDR_ID            3
 175
 176 struct sockaddr_tipc {
 177         unsigned short family;
 178         unsigned char  addrtype;
 179         signed   char  scope;
 180         union {
 181                 struct tipc_portid id;
 182                 struct tipc_name_seq nameseq;
 183                 struct {
 184                         struct tipc_name name;
 185                         __u32 domain;
 186                 } name;
 187         } addr;
 188 };
 189
 190 /*
 191  * Ancillary data objects supported by recvmsg()
 192  */
 193
 194 #define TIPC_ERRINFO    1       /* error info */
 195 #define TIPC_RETDATA    2       /* returned data */
 196 #define TIPC_DESTNAME   3       /* destination name */
 197
 198 /*
 199  * TIPC-specific socket option values
 200  */
 201
 202 #define TIPC_IMPORTANCE         127     /* Default: TIPC_LOW_IMPORTANCE */
 203 #define TIPC_SRC_DROPPABLE      128     /* Default: based on socket type */
 204 #define TIPC_DEST_DROPPABLE     129     /* Default: based on socket type */
 205 #define TIPC_CONN_TIMEOUT       130     /* Default: 8000 (ms)  */
 206 #define TIPC_NODE_RECVQ_DEPTH   131     /* Default: none (read only) */
 207 #define TIPC_SOCK_RECVQ_DEPTH   132     /* Default: none (read only) */
 208
 209 #endif