include/linux/tipc.h

   1 /*
   2  * include/linux/tipc.h: Include file for TIPC socket interface
   3  *
   4  * Copyright (c) 2003-2005, Ericsson Research Canada
   5  * Copyright (c) 2005, Wind River Systems
   6  * Copyright (c) 2005-2006, Ericsson AB
   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 _LINUX_TIPC_H_
  39 #define _LINUX_TIPC_H_
  40
  41 #include <linux/types.h>
  42
  43 /*
  44  * TIPC addressing primitives
  45  */
  46
  47 struct tipc_portid {
  48         __u32 ref;
  49         __u32 node;
  50 };
  51
  52 struct tipc_name {
  53         __u32 type;
  54         __u32 instance;
  55 };
  56
  57 struct tipc_name_seq {
  58         __u32 type;
  59         __u32 lower;
  60         __u32 upper;
  61 };
  62
  63 static inline __u32 tipc_addr(unsigned int zone,
  64                               unsigned int cluster,
  65                               unsigned int node)
  66 {
  67         return (zone << 24) | (cluster << 12) | node;
  68 }
  69
  70 static inline unsigned int tipc_zone(__u32 addr)
  71 {
  72         return addr >> 24;
  73 }
  74
  75 static inline unsigned int tipc_cluster(__u32 addr)
  76 {
  77         return (addr >> 12) & 0xfff;
  78 }
  79
  80 static inline unsigned int tipc_node(__u32 addr)
  81 {
  82         return addr & 0xfff;
  83 }
  84
  85 /*
  86  * Application-accessible port name types
  87  */
  88
  89 #define TIPC_CFG_SRV            0       /* configuration service name type */
  90 #define TIPC_TOP_SRV            1       /* topology service name type */
  91 #define TIPC_RESERVED_TYPES     64      /* lowest user-publishable name type */
  92
  93 /*
  94  * Publication scopes when binding port names and port name sequences
  95  */
  96
  97 #define TIPC_ZONE_SCOPE         1
  98 #define TIPC_CLUSTER_SCOPE      2
  99 #define TIPC_NODE_SCOPE         3
 100
 101 /*
 102  * Limiting values for messages
 103  */
 104
 105 #define TIPC_MAX_USER_MSG_SIZE  66000
 106
 107 /*
 108  * Message importance levels
 109  */
 110
 111 #define TIPC_LOW_IMPORTANCE             0  /* default */
 112 #define TIPC_MEDIUM_IMPORTANCE          1
 113 #define TIPC_HIGH_IMPORTANCE            2
 114 #define TIPC_CRITICAL_IMPORTANCE        3
 115
 116 /*
 117  * Msg rejection/connection shutdown reasons
 118  */
 119
 120 #define TIPC_OK                 0
 121 #define TIPC_ERR_NO_NAME        1
 122 #define TIPC_ERR_NO_PORT        2
 123 #define TIPC_ERR_NO_NODE        3
 124 #define TIPC_ERR_OVERLOAD       4
 125 #define TIPC_CONN_SHUTDOWN      5
 126
 127 /*
 128  * TIPC topology subscription service definitions
 129  */
 130
 131 #define TIPC_SUB_PORTS          0x01    /* filter for port availability */
 132 #define TIPC_SUB_SERVICE        0x02    /* filter for service availability */
 133 #if 0
 134 /* The following filter options are not currently implemented */
 135 #define TIPC_SUB_NO_BIND_EVTS   0x04    /* filter out "publish" events */
 136 #define TIPC_SUB_NO_UNBIND_EVTS 0x08    /* filter out "withdraw" events */
 137 #define TIPC_SUB_SINGLE_EVT     0x10    /* expire after first event */
 138 #endif
 139
 140 #define TIPC_WAIT_FOREVER       ~0      /* timeout for permanent subscription */
 141
 142 struct tipc_subscr {
 143         struct tipc_name_seq seq;       /* name sequence of interest */
 144         __u32 timeout;                  /* subscription duration (in ms) */
 145         __u32 filter;                   /* bitmask of filter options */
 146         char usr_handle[8];             /* available for subscriber use */
 147 };
 148
 149 #define TIPC_PUBLISHED          1       /* publication event */
 150 #define TIPC_WITHDRAWN          2       /* withdraw event */
 151 #define TIPC_SUBSCR_TIMEOUT     3       /* subscription timeout event */
 152
 153 struct tipc_event {
 154         __u32 event;                    /* event type */
 155         __u32 found_lower;              /* matching name seq instances */
 156         __u32 found_upper;              /*    "      "    "     "      */
 157         struct tipc_portid port;        /* associated port */
 158         struct tipc_subscr s;           /* associated subscription */
 159 };
 160
 161 /*
 162  * Socket API
 163  */
 164
 165 #ifndef AF_TIPC
 166 #define AF_TIPC         30
 167 #endif
 168
 169 #ifndef PF_TIPC
 170 #define PF_TIPC         AF_TIPC
 171 #endif
 172
 173 #ifndef SOL_TIPC
 174 #define SOL_TIPC        271
 175 #endif
 176
 177 #define TIPC_ADDR_NAMESEQ       1
 178 #define TIPC_ADDR_MCAST         1
 179 #define TIPC_ADDR_NAME          2
 180 #define TIPC_ADDR_ID            3
 181
 182 struct sockaddr_tipc {
 183         unsigned short family;
 184         unsigned char  addrtype;
 185         signed   char  scope;
 186         union {
 187                 struct tipc_portid id;
 188                 struct tipc_name_seq nameseq;
 189                 struct {
 190                         struct tipc_name name;
 191                         __u32 domain; /* 0: own zone */
 192                 } name;
 193         } addr;
 194 };
 195
 196 /*
 197  * Ancillary data objects supported by recvmsg()
 198  */
 199
 200 #define TIPC_ERRINFO    1       /* error info */
 201 #define TIPC_RETDATA    2       /* returned data */
 202 #define TIPC_DESTNAME   3       /* destination name */
 203
 204 /*
 205  * TIPC-specific socket option values
 206  */
 207
 208 #define TIPC_IMPORTANCE         127     /* Default: TIPC_LOW_IMPORTANCE */
 209 #define TIPC_SRC_DROPPABLE      128     /* Default: 0 (resend congested msg) */
 210 #define TIPC_DEST_DROPPABLE     129     /* Default: based on socket type */
 211 #define TIPC_CONN_TIMEOUT       130     /* Default: 8000 (ms)  */
 212
 213 #endif