tipc.h (8824B) - Raw
1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ 2 /* 3 * include/uapi/linux/tipc.h: Header for TIPC socket interface 4 * 5 * Copyright (c) 2003-2006, 2015-2016 Ericsson AB 6 * Copyright (c) 2005, 2010-2011, Wind River Systems 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 #include <linux/sockios.h> 43 44 /* 45 * TIPC addressing primitives 46 */ 47 48 struct tipc_socket_addr { 49 __u32 ref; 50 __u32 node; 51 }; 52 53 struct tipc_service_addr { 54 __u32 type; 55 __u32 instance; 56 }; 57 58 struct tipc_service_range { 59 __u32 type; 60 __u32 lower; 61 __u32 upper; 62 }; 63 64 /* 65 * Application-accessible service types 66 */ 67 68 #define TIPC_NODE_STATE 0 /* node state service type */ 69 #define TIPC_TOP_SRV 1 /* topology server service type */ 70 #define TIPC_LINK_STATE 2 /* link state service type */ 71 #define TIPC_RESERVED_TYPES 64 /* lowest user-allowed service type */ 72 73 /* 74 * Publication scopes when binding service / service range 75 */ 76 enum tipc_scope { 77 TIPC_CLUSTER_SCOPE = 2, /* 0 can also be used */ 78 TIPC_NODE_SCOPE = 3 79 }; 80 81 /* 82 * Limiting values for messages 83 */ 84 85 #define TIPC_MAX_USER_MSG_SIZE 66000U 86 87 /* 88 * Message importance levels 89 */ 90 91 #define TIPC_LOW_IMPORTANCE 0 92 #define TIPC_MEDIUM_IMPORTANCE 1 93 #define TIPC_HIGH_IMPORTANCE 2 94 #define TIPC_CRITICAL_IMPORTANCE 3 95 96 /* 97 * Msg rejection/connection shutdown reasons 98 */ 99 100 #define TIPC_OK 0 101 #define TIPC_ERR_NO_NAME 1 102 #define TIPC_ERR_NO_PORT 2 103 #define TIPC_ERR_NO_NODE 3 104 #define TIPC_ERR_OVERLOAD 4 105 #define TIPC_CONN_SHUTDOWN 5 106 107 /* 108 * TIPC topology subscription service definitions 109 */ 110 111 #define TIPC_SUB_PORTS 0x01 /* filter: evt at each match */ 112 #define TIPC_SUB_SERVICE 0x02 /* filter: evt at first up/last down */ 113 #define TIPC_SUB_CANCEL 0x04 /* filter: cancel a subscription */ 114 115 #define TIPC_WAIT_FOREVER (~0) /* timeout for permanent subscription */ 116 117 struct tipc_subscr { 118 struct tipc_service_range seq; /* range of interest */ 119 __u32 timeout; /* subscription duration (in ms) */ 120 __u32 filter; /* bitmask of filter options */ 121 char usr_handle[8]; /* available for subscriber use */ 122 }; 123 124 #define TIPC_PUBLISHED 1 /* publication event */ 125 #define TIPC_WITHDRAWN 2 /* withdrawal event */ 126 #define TIPC_SUBSCR_TIMEOUT 3 /* subscription timeout event */ 127 128 struct tipc_event { 129 __u32 event; /* event type */ 130 __u32 found_lower; /* matching range */ 131 __u32 found_upper; /* " " */ 132 struct tipc_socket_addr port; /* associated socket */ 133 struct tipc_subscr s; /* associated subscription */ 134 }; 135 136 /* 137 * Socket API 138 */ 139 140 #ifndef AF_TIPC 141 #define AF_TIPC 30 142 #endif 143 144 #ifndef PF_TIPC 145 #define PF_TIPC AF_TIPC 146 #endif 147 148 #ifndef SOL_TIPC 149 #define SOL_TIPC 271 150 #endif 151 152 #define TIPC_ADDR_MCAST 1 153 #define TIPC_SERVICE_RANGE 1 154 #define TIPC_SERVICE_ADDR 2 155 #define TIPC_SOCKET_ADDR 3 156 157 struct sockaddr_tipc { 158 unsigned short family; 159 unsigned char addrtype; 160 signed char scope; 161 union { 162 struct tipc_socket_addr id; 163 struct tipc_service_range nameseq; 164 struct { 165 struct tipc_service_addr name; 166 __u32 domain; 167 } name; 168 } addr; 169 }; 170 171 /* 172 * Ancillary data objects supported by recvmsg() 173 */ 174 175 #define TIPC_ERRINFO 1 /* error info */ 176 #define TIPC_RETDATA 2 /* returned data */ 177 #define TIPC_DESTNAME 3 /* destination name */ 178 179 /* 180 * TIPC-specific socket option names 181 */ 182 183 #define TIPC_IMPORTANCE 127 /* Default: TIPC_LOW_IMPORTANCE */ 184 #define TIPC_SRC_DROPPABLE 128 /* Default: based on socket type */ 185 #define TIPC_DEST_DROPPABLE 129 /* Default: based on socket type */ 186 #define TIPC_CONN_TIMEOUT 130 /* Default: 8000 (ms) */ 187 #define TIPC_NODE_RECVQ_DEPTH 131 /* Default: none (read only) */ 188 #define TIPC_SOCK_RECVQ_DEPTH 132 /* Default: none (read only) */ 189 #define TIPC_MCAST_BROADCAST 133 /* Default: TIPC selects. No arg */ 190 #define TIPC_MCAST_REPLICAST 134 /* Default: TIPC selects. No arg */ 191 #define TIPC_GROUP_JOIN 135 /* Takes struct tipc_group_req* */ 192 #define TIPC_GROUP_LEAVE 136 /* No argument */ 193 #define TIPC_SOCK_RECVQ_USED 137 /* Default: none (read only) */ 194 #define TIPC_NODELAY 138 /* Default: false */ 195 196 /* 197 * Flag values 198 */ 199 #define TIPC_GROUP_LOOPBACK 0x1 /* Receive copy of sent msg when match */ 200 #define TIPC_GROUP_MEMBER_EVTS 0x2 /* Receive membership events in socket */ 201 202 struct tipc_group_req { 203 __u32 type; /* group id */ 204 __u32 instance; /* member id */ 205 __u32 scope; /* cluster/node */ 206 __u32 flags; 207 }; 208 209 /* 210 * Maximum sizes of TIPC bearer-related names (including terminating NULL) 211 * The string formatting for each name element is: 212 * media: media 213 * interface: media:interface name 214 * link: node:interface-node:interface 215 */ 216 #define TIPC_NODEID_LEN 16 217 #define TIPC_MAX_MEDIA_NAME 16 218 #define TIPC_MAX_IF_NAME 16 219 #define TIPC_MAX_BEARER_NAME 32 220 #define TIPC_MAX_LINK_NAME 68 221 222 #define SIOCGETLINKNAME SIOCPROTOPRIVATE 223 #define SIOCGETNODEID (SIOCPROTOPRIVATE + 1) 224 225 struct tipc_sioc_ln_req { 226 __u32 peer; 227 __u32 bearer_id; 228 char linkname[TIPC_MAX_LINK_NAME]; 229 }; 230 231 struct tipc_sioc_nodeid_req { 232 __u32 peer; 233 char node_id[TIPC_NODEID_LEN]; 234 }; 235 236 /* 237 * TIPC Crypto, AEAD 238 */ 239 #define TIPC_AEAD_ALG_NAME (32) 240 241 struct tipc_aead_key { 242 char alg_name[TIPC_AEAD_ALG_NAME]; 243 unsigned int keylen; /* in bytes */ 244 char key[]; 245 }; 246 247 #define TIPC_AEAD_KEYLEN_MIN (16 + 4) 248 #define TIPC_AEAD_KEYLEN_MAX (32 + 4) 249 #define TIPC_AEAD_KEY_SIZE_MAX (sizeof(struct tipc_aead_key) + \ 250 TIPC_AEAD_KEYLEN_MAX) 251 252 static __inline__ int tipc_aead_key_size(struct tipc_aead_key *key) 253 { 254 return sizeof(*key) + key->keylen; 255 } 256 257 #define TIPC_REKEYING_NOW (~0U) 258 259 /* The macros and functions below are deprecated: 260 */ 261 262 #define TIPC_CFG_SRV 0 263 #define TIPC_ZONE_SCOPE 1 264 265 #define TIPC_ADDR_NAMESEQ 1 266 #define TIPC_ADDR_NAME 2 267 #define TIPC_ADDR_ID 3 268 269 #define TIPC_NODE_BITS 12 270 #define TIPC_CLUSTER_BITS 12 271 #define TIPC_ZONE_BITS 8 272 273 #define TIPC_NODE_OFFSET 0 274 #define TIPC_CLUSTER_OFFSET TIPC_NODE_BITS 275 #define TIPC_ZONE_OFFSET (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS) 276 277 #define TIPC_NODE_SIZE ((1UL << TIPC_NODE_BITS) - 1) 278 #define TIPC_CLUSTER_SIZE ((1UL << TIPC_CLUSTER_BITS) - 1) 279 #define TIPC_ZONE_SIZE ((1UL << TIPC_ZONE_BITS) - 1) 280 281 #define TIPC_NODE_MASK (TIPC_NODE_SIZE << TIPC_NODE_OFFSET) 282 #define TIPC_CLUSTER_MASK (TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET) 283 #define TIPC_ZONE_MASK (TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET) 284 285 #define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK) 286 287 #define tipc_portid tipc_socket_addr 288 #define tipc_name tipc_service_addr 289 #define tipc_name_seq tipc_service_range 290 291 static __inline__ __u32 tipc_addr(unsigned int zone, 292 unsigned int cluster, 293 unsigned int node) 294 { 295 return (zone << TIPC_ZONE_OFFSET) | 296 (cluster << TIPC_CLUSTER_OFFSET) | 297 node; 298 } 299 300 static __inline__ unsigned int tipc_zone(__u32 addr) 301 { 302 return addr >> TIPC_ZONE_OFFSET; 303 } 304 305 static __inline__ unsigned int tipc_cluster(__u32 addr) 306 { 307 return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET; 308 } 309 310 static __inline__ unsigned int tipc_node(__u32 addr) 311 { 312 return addr & TIPC_NODE_MASK; 313 } 314 315 #endif