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  /* default */
 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_PORTS          0x01    /* filter for port availability */
 131 #define TIPC_SUB_SERVICE        0x02    /* filter for service availability */
 132 #if 0
 133 /* The following filter options are not currently implemented */
 134 #define TIPC_SUB_NO_BIND_EVTS   0x04    /* filter out "publish" events */
 135 #define TIPC_SUB_NO_UNBIND_EVTS 0x08    /* filter out "withdraw" events */
 136 #define TIPC_SUB_SINGLE_EVT     0x10    /* expire after first event */
 137 #endif
 138
 139 #define TIPC_WAIT_FOREVER       ~0      /* timeout for permanent subscription */
 140
 141 struct tipc_subscr {
 142         struct tipc_name_seq seq;       /* name sequence of interest */
 143         __u32 timeout;                  /* subscription duration (in ms) */
 144         __u32 filter;                   /* bitmask of filter options */
 145         char usr_handle[8];             /* available for subscriber use */
 146 };
 147
 148 #define TIPC_PUBLISHED          1       /* publication event */
 149 #define TIPC_WITHDRAWN          2       /* withdraw event */
 150 #define TIPC_SUBSCR_TIMEOUT     3       /* subscription timeout event */
 151
 152 struct tipc_event {
 153         __u32 event;                    /* event type */
 154         __u32 found_lower;              /* matching name seq instances */
 155         __u32 found_upper;              /*    "      "    "     "      */
 156         struct tipc_portid port;        /* associated port */
 157         struct tipc_subscr s;           /* associated subscription */
 158 };
 159
 160 /*
 161  * Socket API
 162  */
 163
 164 #ifndef AF_TIPC
 165 #define AF_TIPC         30
 166 #endif
 167
 168 #ifndef PF_TIPC
 169 #define PF_TIPC         AF_TIPC
 170 #endif
 171
 172 #ifndef SOL_TIPC
 173 #define SOL_TIPC        271
 174 #endif
 175
 176 #define TIPC_ADDR_NAMESEQ       1
 177 #define TIPC_ADDR_MCAST         1
 178 #define TIPC_ADDR_NAME          2
 179 #define TIPC_ADDR_ID            3
 180
 181 struct sockaddr_tipc {
 182         unsigned short family;
 183         unsigned char  addrtype;
 184         signed   char  scope;
 185         union {
 186                 struct tipc_portid id;
 187                 struct tipc_name_seq nameseq;
 188                 struct {
 189                         struct tipc_name name;
 190                         __u32 domain; /* 0: own zone */
 191                 } name;
 192         } addr;
 193 };
 194
 195 /*
 196  * Ancillary data objects supported by recvmsg()
 197  */
 198
 199 #define TIPC_ERRINFO    1       /* error info */
 200 #define TIPC_RETDATA    2       /* returned data */
 201 #define TIPC_DESTNAME   3       /* destination name */
 202
 203 /*
 204  * TIPC-specific socket option values
 205  */
 206
 207 #define TIPC_IMPORTANCE         127     /* Default: TIPC_LOW_IMPORTANCE */
 208 #define TIPC_SRC_DROPPABLE      128     /* Default: 0 (resend congested msg) */
 209 #define TIPC_DEST_DROPPABLE     129     /* Default: based on socket type */
 210 #define TIPC_CONN_TIMEOUT       130     /* Default: 8000 (ms)  */
 211
 212 #endif