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| 1 | /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ |
|---|---|
| 2 | /* |
| 3 | * include/uapi/linux/tipc_config.h: Header for TIPC configuration interface |
| 4 | * |
| 5 | * Copyright (c) 2003-2006, Ericsson AB |
| 6 | * Copyright (c) 2005-2007, 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_CONFIG_H_ |
| 39 | #define _LINUX_TIPC_CONFIG_H_ |
| 40 | |
| 41 | #include <linux/types.h> |
| 42 | #include <linux/string.h> |
| 43 | #include <linux/tipc.h> |
| 44 | #include <asm/byteorder.h> |
| 45 | |
| 46 | /* |
| 47 | * Configuration |
| 48 | * |
| 49 | * All configuration management messaging involves sending a request message |
| 50 | * to the TIPC configuration service on a node, which sends a reply message |
| 51 | * back. (In the future multi-message replies may be supported.) |
| 52 | * |
| 53 | * Both request and reply messages consist of a transport header and payload. |
| 54 | * The transport header contains info about the desired operation; |
| 55 | * the payload consists of zero or more type/length/value (TLV) items |
| 56 | * which specify parameters or results for the operation. |
| 57 | * |
| 58 | * For many operations, the request and reply messages have a fixed number |
| 59 | * of TLVs (usually zero or one); however, some reply messages may return |
| 60 | * a variable number of TLVs. A failed request is denoted by the presence |
| 61 | * of an "error string" TLV in the reply message instead of the TLV(s) the |
| 62 | * reply should contain if the request succeeds. |
| 63 | */ |
| 64 | |
| 65 | /* |
| 66 | * Public commands: |
| 67 | * May be issued by any process. |
| 68 | * Accepted by own node, or by remote node only if remote management enabled. |
| 69 | */ |
| 70 | |
| 71 | #define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */ |
| 72 | #define TIPC_CMD_GET_NODES 0x0001 /* tx net_addr, rx node_info(s) */ |
| 73 | #define TIPC_CMD_GET_MEDIA_NAMES 0x0002 /* tx none, rx media_name(s) */ |
| 74 | #define TIPC_CMD_GET_BEARER_NAMES 0x0003 /* tx none, rx bearer_name(s) */ |
| 75 | #define TIPC_CMD_GET_LINKS 0x0004 /* tx net_addr, rx link_info(s) */ |
| 76 | #define TIPC_CMD_SHOW_NAME_TABLE 0x0005 /* tx name_tbl_query, rx ultra_string */ |
| 77 | #define TIPC_CMD_SHOW_PORTS 0x0006 /* tx none, rx ultra_string */ |
| 78 | #define TIPC_CMD_SHOW_LINK_STATS 0x000B /* tx link_name, rx ultra_string */ |
| 79 | #define TIPC_CMD_SHOW_STATS 0x000F /* tx unsigned, rx ultra_string */ |
| 80 | |
| 81 | /* |
| 82 | * Protected commands: |
| 83 | * May only be issued by "network administration capable" process. |
| 84 | * Accepted by own node, or by remote node only if remote management enabled |
| 85 | * and this node is zone manager. |
| 86 | */ |
| 87 | |
| 88 | #define TIPC_CMD_GET_REMOTE_MNG 0x4003 /* tx none, rx unsigned */ |
| 89 | #define TIPC_CMD_GET_MAX_PORTS 0x4004 /* tx none, rx unsigned */ |
| 90 | #define TIPC_CMD_GET_MAX_PUBL 0x4005 /* obsoleted */ |
| 91 | #define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* obsoleted */ |
| 92 | #define TIPC_CMD_GET_MAX_ZONES 0x4007 /* obsoleted */ |
| 93 | #define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* obsoleted */ |
| 94 | #define TIPC_CMD_GET_MAX_NODES 0x4009 /* obsoleted */ |
| 95 | #define TIPC_CMD_GET_MAX_SLAVES 0x400A /* obsoleted */ |
| 96 | #define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */ |
| 97 | |
| 98 | #define TIPC_CMD_ENABLE_BEARER 0x4101 /* tx bearer_config, rx none */ |
| 99 | #define TIPC_CMD_DISABLE_BEARER 0x4102 /* tx bearer_name, rx none */ |
| 100 | #define TIPC_CMD_SET_LINK_TOL 0x4107 /* tx link_config, rx none */ |
| 101 | #define TIPC_CMD_SET_LINK_PRI 0x4108 /* tx link_config, rx none */ |
| 102 | #define TIPC_CMD_SET_LINK_WINDOW 0x4109 /* tx link_config, rx none */ |
| 103 | #define TIPC_CMD_SET_LOG_SIZE 0x410A /* obsoleted */ |
| 104 | #define TIPC_CMD_DUMP_LOG 0x410B /* obsoleted */ |
| 105 | #define TIPC_CMD_RESET_LINK_STATS 0x410C /* tx link_name, rx none */ |
| 106 | |
| 107 | /* |
| 108 | * Private commands: |
| 109 | * May only be issued by "network administration capable" process. |
| 110 | * Accepted by own node only; cannot be used on a remote node. |
| 111 | */ |
| 112 | |
| 113 | #define TIPC_CMD_SET_NODE_ADDR 0x8001 /* tx net_addr, rx none */ |
| 114 | #define TIPC_CMD_SET_REMOTE_MNG 0x8003 /* tx unsigned, rx none */ |
| 115 | #define TIPC_CMD_SET_MAX_PORTS 0x8004 /* tx unsigned, rx none */ |
| 116 | #define TIPC_CMD_SET_MAX_PUBL 0x8005 /* obsoleted */ |
| 117 | #define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* obsoleted */ |
| 118 | #define TIPC_CMD_SET_MAX_ZONES 0x8007 /* obsoleted */ |
| 119 | #define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* obsoleted */ |
| 120 | #define TIPC_CMD_SET_MAX_NODES 0x8009 /* obsoleted */ |
| 121 | #define TIPC_CMD_SET_MAX_SLAVES 0x800A /* obsoleted */ |
| 122 | #define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */ |
| 123 | |
| 124 | /* |
| 125 | * Reserved commands: |
| 126 | * May not be issued by any process. |
| 127 | * Used internally by TIPC. |
| 128 | */ |
| 129 | |
| 130 | #define TIPC_CMD_NOT_NET_ADMIN 0xC001 /* tx none, rx none */ |
| 131 | |
| 132 | /* |
| 133 | * TLV types defined for TIPC |
| 134 | */ |
| 135 | |
| 136 | #define TIPC_TLV_NONE 0 /* no TLV present */ |
| 137 | #define TIPC_TLV_VOID 1 /* empty TLV (0 data bytes)*/ |
| 138 | #define TIPC_TLV_UNSIGNED 2 /* 32-bit integer */ |
| 139 | #define TIPC_TLV_STRING 3 /* char[128] (max) */ |
| 140 | #define TIPC_TLV_LARGE_STRING 4 /* char[2048] (max) */ |
| 141 | #define TIPC_TLV_ULTRA_STRING 5 /* char[32768] (max) */ |
| 142 | |
| 143 | #define TIPC_TLV_ERROR_STRING 16 /* char[128] containing "error code" */ |
| 144 | #define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting <Z.C.N> */ |
| 145 | #define TIPC_TLV_MEDIA_NAME 18 /* char[TIPC_MAX_MEDIA_NAME] */ |
| 146 | #define TIPC_TLV_BEARER_NAME 19 /* char[TIPC_MAX_BEARER_NAME] */ |
| 147 | #define TIPC_TLV_LINK_NAME 20 /* char[TIPC_MAX_LINK_NAME] */ |
| 148 | #define TIPC_TLV_NODE_INFO 21 /* struct tipc_node_info */ |
| 149 | #define TIPC_TLV_LINK_INFO 22 /* struct tipc_link_info */ |
| 150 | #define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */ |
| 151 | #define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */ |
| 152 | #define TIPC_TLV_NAME_TBL_QUERY 25 /* struct tipc_name_table_query */ |
| 153 | #define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */ |
| 154 | |
| 155 | /* |
| 156 | * Link priority limits (min, default, max, media default) |
| 157 | */ |
| 158 | |
| 159 | #define TIPC_MIN_LINK_PRI 0 |
| 160 | #define TIPC_DEF_LINK_PRI 10 |
| 161 | #define TIPC_MAX_LINK_PRI 31 |
| 162 | #define TIPC_MEDIA_LINK_PRI (TIPC_MAX_LINK_PRI + 1) |
| 163 | |
| 164 | /* |
| 165 | * Link tolerance limits (min, default, max), in ms |
| 166 | */ |
| 167 | |
| 168 | #define TIPC_MIN_LINK_TOL 50 |
| 169 | #define TIPC_DEF_LINK_TOL 1500 |
| 170 | #define TIPC_MAX_LINK_TOL 30000 |
| 171 | |
| 172 | #if (TIPC_MIN_LINK_TOL < 16) |
| 173 | #error "TIPC_MIN_LINK_TOL is too small (abort limit may be NaN)" |
| 174 | #endif |
| 175 | |
| 176 | /* |
| 177 | * Link window limits (min, default, max), in packets |
| 178 | */ |
| 179 | |
| 180 | #define TIPC_MIN_LINK_WIN 16 |
| 181 | #define TIPC_DEF_LINK_WIN 50 |
| 182 | #define TIPC_MAX_LINK_WIN 8191 |
| 183 | |
| 184 | /* |
| 185 | * Default MTU for UDP media |
| 186 | */ |
| 187 | |
| 188 | #define TIPC_DEF_LINK_UDP_MTU 14000 |
| 189 | |
| 190 | struct tipc_node_info { |
| 191 | __be32 addr; /* network address of node */ |
| 192 | __be32 up; /* 0=down, 1= up */ |
| 193 | }; |
| 194 | |
| 195 | struct tipc_link_info { |
| 196 | __be32 dest; /* network address of peer node */ |
| 197 | __be32 up; /* 0=down, 1=up */ |
| 198 | char str[TIPC_MAX_LINK_NAME]; /* link name */ |
| 199 | }; |
| 200 | |
| 201 | struct tipc_bearer_config { |
| 202 | __be32 priority; /* Range [1,31]. Override per link */ |
| 203 | __be32 disc_domain; /* <Z.C.N> describing desired nodes */ |
| 204 | char name[TIPC_MAX_BEARER_NAME]; |
| 205 | }; |
| 206 | |
| 207 | struct tipc_link_config { |
| 208 | __be32 value; |
| 209 | char name[TIPC_MAX_LINK_NAME]; |
| 210 | }; |
| 211 | |
| 212 | #define TIPC_NTQ_ALLTYPES 0x80000000 |
| 213 | |
| 214 | struct tipc_name_table_query { |
| 215 | __be32 depth; /* 1:type, 2:+name info, 3:+port info, 4+:+debug info */ |
| 216 | __be32 type; /* {t,l,u} info ignored if high bit of "depth" is set */ |
| 217 | __be32 lowbound; /* (i.e. displays all entries of name table) */ |
| 218 | __be32 upbound; |
| 219 | }; |
| 220 | |
| 221 | /* |
| 222 | * The error string TLV is a null-terminated string describing the cause |
| 223 | * of the request failure. To simplify error processing (and to save space) |
| 224 | * the first character of the string can be a special error code character |
| 225 | * (lying by the range 0x80 to 0xFF) which represents a pre-defined reason. |
| 226 | */ |
| 227 | |
| 228 | #define TIPC_CFG_TLV_ERROR "\x80" /* request contains incorrect TLV(s) */ |
| 229 | #define TIPC_CFG_NOT_NET_ADMIN "\x81" /* must be network administrator */ |
| 230 | #define TIPC_CFG_NOT_ZONE_MSTR "\x82" /* must be zone master */ |
| 231 | #define TIPC_CFG_NO_REMOTE "\x83" /* remote management not enabled */ |
| 232 | #define TIPC_CFG_NOT_SUPPORTED "\x84" /* request is not supported by TIPC */ |
| 233 | #define TIPC_CFG_INVALID_VALUE "\x85" /* request has invalid argument value */ |
| 234 | |
| 235 | /* |
| 236 | * A TLV consists of a descriptor, followed by the TLV value. |
| 237 | * TLV descriptor fields are stored in network byte order; |
| 238 | * TLV values must also be stored in network byte order (where applicable). |
| 239 | * TLV descriptors must be aligned to addresses which are multiple of 4, |
| 240 | * so up to 3 bytes of padding may exist at the end of the TLV value area. |
| 241 | * There must not be any padding between the TLV descriptor and its value. |
| 242 | */ |
| 243 | |
| 244 | struct tlv_desc { |
| 245 | __be16 tlv_len; /* TLV length (descriptor + value) */ |
| 246 | __be16 tlv_type; /* TLV identifier */ |
| 247 | }; |
| 248 | |
| 249 | #define TLV_ALIGNTO 4 |
| 250 | |
| 251 | #define TLV_ALIGN(datalen) (((datalen)+(TLV_ALIGNTO-1)) & ~(TLV_ALIGNTO-1)) |
| 252 | #define TLV_LENGTH(datalen) (sizeof(struct tlv_desc) + (datalen)) |
| 253 | #define TLV_SPACE(datalen) (TLV_ALIGN(TLV_LENGTH(datalen))) |
| 254 | #define TLV_DATA(tlv) ((void *)((char *)(tlv) + TLV_LENGTH(0))) |
| 255 | |
| 256 | static inline int TLV_OK(const void *tlv, __u16 space) |
| 257 | { |
| 258 | /* |
| 259 | * Would also like to check that "tlv" is a multiple of 4, |
| 260 | * but don't know how to do this in a portable way. |
| 261 | * - Tried doing (!(tlv & (TLV_ALIGNTO-1))), but GCC compiler |
| 262 | * won't allow binary "&" with a pointer. |
| 263 | * - Tried casting "tlv" to integer type, but causes warning about size |
| 264 | * mismatch when pointer is bigger than chosen type (int, long, ...). |
| 265 | */ |
| 266 | |
| 267 | return (space >= TLV_SPACE(0)) && |
| 268 | (__be16_to_cpu(((struct tlv_desc *)tlv)->tlv_len) <= space); |
| 269 | } |
| 270 | |
| 271 | static inline int TLV_CHECK(const void *tlv, __u16 space, __u16 exp_type) |
| 272 | { |
| 273 | return TLV_OK(tlv, space) && |
| 274 | (__be16_to_cpu(((struct tlv_desc *)tlv)->tlv_type) == exp_type); |
| 275 | } |
| 276 | |
| 277 | static inline int TLV_GET_LEN(struct tlv_desc *tlv) |
| 278 | { |
| 279 | return __be16_to_cpu(tlv->tlv_len); |
| 280 | } |
| 281 | |
| 282 | static inline void TLV_SET_LEN(struct tlv_desc *tlv, __u16 len) |
| 283 | { |
| 284 | tlv->tlv_len = __cpu_to_be16(len); |
| 285 | } |
| 286 | |
| 287 | static inline int TLV_CHECK_TYPE(struct tlv_desc *tlv, __u16 type) |
| 288 | { |
| 289 | return (__be16_to_cpu(tlv->tlv_type) == type); |
| 290 | } |
| 291 | |
| 292 | static inline void TLV_SET_TYPE(struct tlv_desc *tlv, __u16 type) |
| 293 | { |
| 294 | tlv->tlv_type = __cpu_to_be16(type); |
| 295 | } |
| 296 | |
| 297 | static inline int TLV_SET(void *tlv, __u16 type, void *data, __u16 len) |
| 298 | { |
| 299 | struct tlv_desc *tlv_ptr; |
| 300 | int tlv_len; |
| 301 | |
| 302 | tlv_len = TLV_LENGTH(len); |
| 303 | tlv_ptr = (struct tlv_desc *)tlv; |
| 304 | tlv_ptr->tlv_type = __cpu_to_be16(type); |
| 305 | tlv_ptr->tlv_len = __cpu_to_be16(tlv_len); |
| 306 | if (len && data) { |
| 307 | memcpy(TLV_DATA(tlv_ptr), data, len); |
| 308 | memset((char *)TLV_DATA(tlv_ptr) + len, 0, TLV_SPACE(len) - tlv_len); |
| 309 | } |
| 310 | return TLV_SPACE(len); |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * A TLV list descriptor simplifies processing of messages |
| 315 | * containing multiple TLVs. |
| 316 | */ |
| 317 | |
| 318 | struct tlv_list_desc { |
| 319 | struct tlv_desc *tlv_ptr; /* ptr to current TLV */ |
| 320 | __u32 tlv_space; /* # bytes from curr TLV to list end */ |
| 321 | }; |
| 322 | |
| 323 | static inline void TLV_LIST_INIT(struct tlv_list_desc *list, |
| 324 | void *data, __u32 space) |
| 325 | { |
| 326 | list->tlv_ptr = (struct tlv_desc *)data; |
| 327 | list->tlv_space = space; |
| 328 | } |
| 329 | |
| 330 | static inline int TLV_LIST_EMPTY(struct tlv_list_desc *list) |
| 331 | { |
| 332 | return (list->tlv_space == 0); |
| 333 | } |
| 334 | |
| 335 | static inline int TLV_LIST_CHECK(struct tlv_list_desc *list, __u16 exp_type) |
| 336 | { |
| 337 | return TLV_CHECK(list->tlv_ptr, list->tlv_space, exp_type); |
| 338 | } |
| 339 | |
| 340 | static inline void *TLV_LIST_DATA(struct tlv_list_desc *list) |
| 341 | { |
| 342 | return TLV_DATA(list->tlv_ptr); |
| 343 | } |
| 344 | |
| 345 | static inline void TLV_LIST_STEP(struct tlv_list_desc *list) |
| 346 | { |
| 347 | __u16 tlv_space = TLV_ALIGN(__be16_to_cpu(list->tlv_ptr->tlv_len)); |
| 348 | |
| 349 | list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space); |
| 350 | list->tlv_space -= tlv_space; |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Configuration messages exchanged via NETLINK_GENERIC use the following |
| 355 | * family id, name, version and command. |
| 356 | */ |
| 357 | #define TIPC_GENL_NAME "TIPC" |
| 358 | #define TIPC_GENL_VERSION 0x1 |
| 359 | #define TIPC_GENL_CMD 0x1 |
| 360 | |
| 361 | /* |
| 362 | * TIPC specific header used in NETLINK_GENERIC requests. |
| 363 | */ |
| 364 | struct tipc_genlmsghdr { |
| 365 | __u32 dest; /* Destination address */ |
| 366 | __u16 cmd; /* Command */ |
| 367 | __u16 reserved; /* Unused */ |
| 368 | }; |
| 369 | |
| 370 | #define TIPC_GENL_HDRLEN NLMSG_ALIGN(sizeof(struct tipc_genlmsghdr)) |
| 371 | |
| 372 | /* |
| 373 | * Configuration messages exchanged via TIPC sockets use the TIPC configuration |
| 374 | * message header, which is defined below. This structure is analogous |
| 375 | * to the Netlink message header, but fields are stored in network byte order |
| 376 | * and no padding is permitted between the header and the message data |
| 377 | * that follows. |
| 378 | */ |
| 379 | |
| 380 | struct tipc_cfg_msg_hdr { |
| 381 | __be32 tcm_len; /* Message length (including header) */ |
| 382 | __be16 tcm_type; /* Command type */ |
| 383 | __be16 tcm_flags; /* Additional flags */ |
| 384 | char tcm_reserved[8]; /* Unused */ |
| 385 | }; |
| 386 | |
| 387 | #define TCM_F_REQUEST 0x1 /* Flag: Request message */ |
| 388 | #define TCM_F_MORE 0x2 /* Flag: Message to be continued */ |
| 389 | |
| 390 | #define TCM_ALIGN(datalen) (((datalen)+3) & ~3) |
| 391 | #define TCM_LENGTH(datalen) (sizeof(struct tipc_cfg_msg_hdr) + datalen) |
| 392 | #define TCM_SPACE(datalen) (TCM_ALIGN(TCM_LENGTH(datalen))) |
| 393 | #define TCM_DATA(tcm_hdr) ((void *)((char *)(tcm_hdr) + TCM_LENGTH(0))) |
| 394 | |
| 395 | static inline int TCM_SET(void *msg, __u16 cmd, __u16 flags, |
| 396 | void *data, __u16 data_len) |
| 397 | { |
| 398 | struct tipc_cfg_msg_hdr *tcm_hdr; |
| 399 | int msg_len; |
| 400 | |
| 401 | msg_len = TCM_LENGTH(data_len); |
| 402 | tcm_hdr = (struct tipc_cfg_msg_hdr *)msg; |
| 403 | tcm_hdr->tcm_len = __cpu_to_be32(msg_len); |
| 404 | tcm_hdr->tcm_type = __cpu_to_be16(cmd); |
| 405 | tcm_hdr->tcm_flags = __cpu_to_be16(flags); |
| 406 | if (data_len && data) { |
| 407 | memcpy(TCM_DATA(msg), data, data_len); |
| 408 | memset((char *)TCM_DATA(msg) + data_len, 0, TCM_SPACE(data_len) - msg_len); |
| 409 | } |
| 410 | return TCM_SPACE(data_len); |
| 411 | } |
| 412 | |
| 413 | #endif |
| 414 |
Warning: This file is not a C or C++ file. It does not have highlighting.