1 /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */ 2 /* Copyright (C) B.A.T.M.A.N. contributors: 3 * 4 * Marek Lindner, Simon Wunderlich 5 */ 6 7 #ifndef _UAPI_LINUX_BATADV_PACKET_H_ 8 #define _UAPI_LINUX_BATADV_PACKET_H_ 9 10 #include <asm/byteorder.h> 11 #include <linux/if_ether.h> 12 #include <linux/types.h> 13 14 /** 15 * batadv_tp_is_error() - Check throughput meter return code for error 16 * @n: throughput meter return code 17 * 18 * Return: 0 when not error was detected, != 0 otherwise 19 */ 20 #define batadv_tp_is_error(n) ((uint8_t)(n) > 127 ? 1 : 0) 21 22 /** 23 * enum batadv_packettype - types for batman-adv encapsulated packets 24 * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV 25 * @BATADV_BCAST: broadcast packets carrying broadcast payload 26 * @BATADV_CODED: network coded packets 27 * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V 28 * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V 29 * 30 * @BATADV_UNICAST: unicast packets carrying unicast payload traffic 31 * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original 32 * payload packet 33 * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of 34 * the sender 35 * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute 36 * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers 37 */ 38 enum batadv_packettype { 39 /* 0x00 - 0x3f: local packets or special rules for handling */ 40 BATADV_IV_OGM = 0x00, 41 BATADV_BCAST = 0x01, 42 BATADV_CODED = 0x02, 43 BATADV_ELP = 0x03, 44 BATADV_OGM2 = 0x04, 45 /* 0x40 - 0x7f: unicast */ 46 #define BATADV_UNICAST_MIN 0x40 47 BATADV_UNICAST = 0x40, 48 BATADV_UNICAST_FRAG = 0x41, 49 BATADV_UNICAST_4ADDR = 0x42, 50 BATADV_ICMP = 0x43, 51 BATADV_UNICAST_TVLV = 0x44, 52 #define BATADV_UNICAST_MAX 0x7f 53 /* 0x80 - 0xff: reserved */ 54 }; 55 56 /** 57 * enum batadv_subtype - packet subtype for unicast4addr 58 * @BATADV_P_DATA: user payload 59 * @BATADV_P_DAT_DHT_GET: DHT request message 60 * @BATADV_P_DAT_DHT_PUT: DHT store message 61 * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT 62 */ 63 enum batadv_subtype { 64 BATADV_P_DATA = 0x01, 65 BATADV_P_DAT_DHT_GET = 0x02, 66 BATADV_P_DAT_DHT_PUT = 0x03, 67 BATADV_P_DAT_CACHE_REPLY = 0x04, 68 }; 69 70 /* this file is included by batctl which needs these defines */ 71 #define BATADV_COMPAT_VERSION 15 72 73 /** 74 * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets 75 * @BATADV_NOT_BEST_NEXT_HOP: flag is set when the ogm packet is forwarded and 76 * was previously received from someone other than the best neighbor. 77 * @BATADV_PRIMARIES_FIRST_HOP: flag unused. 78 * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a 79 * one hop neighbor on the interface where it was originally received. 80 */ 81 enum batadv_iv_flags { 82 BATADV_NOT_BEST_NEXT_HOP = 1UL << 0, 83 BATADV_PRIMARIES_FIRST_HOP = 1UL << 1, 84 BATADV_DIRECTLINK = 1UL << 2, 85 }; 86 87 /** 88 * enum batadv_icmp_packettype - ICMP message types 89 * @BATADV_ECHO_REPLY: success reply to BATADV_ECHO_REQUEST 90 * @BATADV_DESTINATION_UNREACHABLE: failure when route to destination not found 91 * @BATADV_ECHO_REQUEST: request BATADV_ECHO_REPLY from destination 92 * @BATADV_TTL_EXCEEDED: error after BATADV_ECHO_REQUEST traversed too many hops 93 * @BATADV_PARAMETER_PROBLEM: return code for malformed messages 94 * @BATADV_TP: throughput meter packet 95 */ 96 enum batadv_icmp_packettype { 97 BATADV_ECHO_REPLY = 0, 98 BATADV_DESTINATION_UNREACHABLE = 3, 99 BATADV_ECHO_REQUEST = 8, 100 BATADV_TTL_EXCEEDED = 11, 101 BATADV_PARAMETER_PROBLEM = 12, 102 BATADV_TP = 15, 103 }; 104 105 /** 106 * enum batadv_mcast_flags - flags for multicast capabilities and settings 107 * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for 108 * 224.0.0.0/24 or ff02::1 109 * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets 110 * (both link-local and routable ones) 111 * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets 112 * (both link-local and routable ones) 113 * @BATADV_MCAST_WANT_NO_RTR4: we have no IPv4 multicast router and therefore 114 * only need routable IPv4 multicast packets we signed up for explicitly 115 * @BATADV_MCAST_WANT_NO_RTR6: we have no IPv6 multicast router and therefore 116 * only need routable IPv6 multicast packets we signed up for explicitly 117 */ 118 enum batadv_mcast_flags { 119 BATADV_MCAST_WANT_ALL_UNSNOOPABLES = 1UL << 0, 120 BATADV_MCAST_WANT_ALL_IPV4 = 1UL << 1, 121 BATADV_MCAST_WANT_ALL_IPV6 = 1UL << 2, 122 BATADV_MCAST_WANT_NO_RTR4 = 1UL << 3, 123 BATADV_MCAST_WANT_NO_RTR6 = 1UL << 4, 124 }; 125 126 /* tt data subtypes */ 127 #define BATADV_TT_DATA_TYPE_MASK 0x0F 128 129 /** 130 * enum batadv_tt_data_flags - flags for tt data tvlv 131 * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM 132 * @BATADV_TT_REQUEST: TT request message 133 * @BATADV_TT_RESPONSE: TT response message 134 * @BATADV_TT_FULL_TABLE: contains full table to replace existing table 135 */ 136 enum batadv_tt_data_flags { 137 BATADV_TT_OGM_DIFF = 1UL << 0, 138 BATADV_TT_REQUEST = 1UL << 1, 139 BATADV_TT_RESPONSE = 1UL << 2, 140 BATADV_TT_FULL_TABLE = 1UL << 4, 141 }; 142 143 /** 144 * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field 145 * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not 146 */ 147 enum batadv_vlan_flags { 148 BATADV_VLAN_HAS_TAG = 1UL << 15, 149 }; 150 151 /** 152 * enum batadv_bla_claimframe - claim frame types for the bridge loop avoidance 153 * @BATADV_CLAIM_TYPE_CLAIM: claim of a client mac address 154 * @BATADV_CLAIM_TYPE_UNCLAIM: unclaim of a client mac address 155 * @BATADV_CLAIM_TYPE_ANNOUNCE: announcement of backbone with current crc 156 * @BATADV_CLAIM_TYPE_REQUEST: request of full claim table 157 * @BATADV_CLAIM_TYPE_LOOPDETECT: mesh-traversing loop detect packet 158 */ 159 enum batadv_bla_claimframe { 160 BATADV_CLAIM_TYPE_CLAIM = 0x00, 161 BATADV_CLAIM_TYPE_UNCLAIM = 0x01, 162 BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, 163 BATADV_CLAIM_TYPE_REQUEST = 0x03, 164 BATADV_CLAIM_TYPE_LOOPDETECT = 0x04, 165 }; 166 167 /** 168 * enum batadv_tvlv_type - tvlv type definitions 169 * @BATADV_TVLV_GW: gateway tvlv 170 * @BATADV_TVLV_DAT: distributed arp table tvlv 171 * @BATADV_TVLV_NC: network coding tvlv 172 * @BATADV_TVLV_TT: translation table tvlv 173 * @BATADV_TVLV_ROAM: roaming advertisement tvlv 174 * @BATADV_TVLV_MCAST: multicast capability tvlv 175 */ 176 enum batadv_tvlv_type { 177 BATADV_TVLV_GW = 0x01, 178 BATADV_TVLV_DAT = 0x02, 179 BATADV_TVLV_NC = 0x03, 180 BATADV_TVLV_TT = 0x04, 181 BATADV_TVLV_ROAM = 0x05, 182 BATADV_TVLV_MCAST = 0x06, 183 }; 184 185 #pragma pack(2) 186 /* the destination hardware field in the ARP frame is used to 187 * transport the claim type and the group id 188 */ 189 struct batadv_bla_claim_dst { 190 uint8_t magic[3]; /* FF:43:05 */ 191 uint8_t type; /* bla_claimframe */ 192 uint16_t group; /* group id */ 193 }; 194 195 /** 196 * struct batadv_ogm_packet - ogm (routing protocol) packet 197 * @packet_type: batman-adv packet type, part of the general header 198 * @version: batman-adv protocol version, part of the general header 199 * @ttl: time to live for this packet, part of the general header 200 * @flags: contains routing relevant flags - see enum batadv_iv_flags 201 * @seqno: sequence identification 202 * @orig: address of the source node 203 * @prev_sender: address of the previous sender 204 * @reserved: reserved byte for alignment 205 * @tq: transmission quality 206 * @tvlv_len: length of tvlv data following the ogm header 207 */ 208 struct batadv_ogm_packet { 209 uint8_t packet_type; 210 uint8_t version; 211 uint8_t ttl; 212 uint8_t flags; 213 uint32_t seqno; 214 uint8_t orig[ETH_ALEN]; 215 uint8_t prev_sender[ETH_ALEN]; 216 uint8_t reserved; 217 uint8_t tq; 218 uint16_t tvlv_len; 219 }; 220 221 #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) 222 223 /** 224 * struct batadv_ogm2_packet - ogm2 (routing protocol) packet 225 * @packet_type: batman-adv packet type, part of the general header 226 * @version: batman-adv protocol version, part of the general header 227 * @ttl: time to live for this packet, part of the general header 228 * @flags: reserved for routing relevant flags - currently always 0 229 * @seqno: sequence number 230 * @orig: originator mac address 231 * @tvlv_len: length of the appended tvlv buffer (in bytes) 232 * @throughput: the currently flooded path throughput 233 */ 234 struct batadv_ogm2_packet { 235 uint8_t packet_type; 236 uint8_t version; 237 uint8_t ttl; 238 uint8_t flags; 239 uint32_t seqno; 240 uint8_t orig[ETH_ALEN]; 241 uint16_t tvlv_len; 242 uint32_t throughput; 243 }; 244 245 #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet) 246 247 /** 248 * struct batadv_elp_packet - elp (neighbor discovery) packet 249 * @packet_type: batman-adv packet type, part of the general header 250 * @version: batman-adv protocol version, part of the general header 251 * @orig: originator mac address 252 * @seqno: sequence number 253 * @elp_interval: currently used ELP sending interval in ms 254 */ 255 struct batadv_elp_packet { 256 uint8_t packet_type; 257 uint8_t version; 258 uint8_t orig[ETH_ALEN]; 259 uint32_t seqno; 260 uint32_t elp_interval; 261 }; 262 263 #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet) 264 265 /** 266 * struct batadv_icmp_header - common members among all the ICMP packets 267 * @packet_type: batman-adv packet type, part of the general header 268 * @version: batman-adv protocol version, part of the general header 269 * @ttl: time to live for this packet, part of the general header 270 * @msg_type: ICMP packet type 271 * @dst: address of the destination node 272 * @orig: address of the source node 273 * @uid: local ICMP socket identifier 274 * @align: not used - useful for alignment purposes only 275 * 276 * This structure is used for ICMP packet parsing only and it is never sent 277 * over the wire. The alignment field at the end is there to ensure that 278 * members are padded the same way as they are in real packets. 279 */ 280 struct batadv_icmp_header { 281 uint8_t packet_type; 282 uint8_t version; 283 uint8_t ttl; 284 uint8_t msg_type; /* see ICMP message types above */ 285 uint8_t dst[ETH_ALEN]; 286 uint8_t orig[ETH_ALEN]; 287 uint8_t uid; 288 uint8_t align[3]; 289 }; 290 291 /** 292 * struct batadv_icmp_packet - ICMP packet 293 * @packet_type: batman-adv packet type, part of the general header 294 * @version: batman-adv protocol version, part of the general header 295 * @ttl: time to live for this packet, part of the general header 296 * @msg_type: ICMP packet type 297 * @dst: address of the destination node 298 * @orig: address of the source node 299 * @uid: local ICMP socket identifier 300 * @reserved: not used - useful for alignment 301 * @seqno: ICMP sequence number 302 */ 303 struct batadv_icmp_packet { 304 uint8_t packet_type; 305 uint8_t version; 306 uint8_t ttl; 307 uint8_t msg_type; /* see ICMP message types above */ 308 uint8_t dst[ETH_ALEN]; 309 uint8_t orig[ETH_ALEN]; 310 uint8_t uid; 311 uint8_t reserved; 312 uint16_t seqno; 313 }; 314 315 /** 316 * struct batadv_icmp_tp_packet - ICMP TP Meter packet 317 * @packet_type: batman-adv packet type, part of the general header 318 * @version: batman-adv protocol version, part of the general header 319 * @ttl: time to live for this packet, part of the general header 320 * @msg_type: ICMP packet type 321 * @dst: address of the destination node 322 * @orig: address of the source node 323 * @uid: local ICMP socket identifier 324 * @subtype: TP packet subtype (see batadv_icmp_tp_subtype) 325 * @session: TP session identifier 326 * @seqno: the TP sequence number 327 * @timestamp: time when the packet has been sent. This value is filled in a 328 * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the 329 * RTT. Since it is read only by the host which wrote it, there is no need to 330 * store it using network order 331 */ 332 struct batadv_icmp_tp_packet { 333 uint8_t packet_type; 334 uint8_t version; 335 uint8_t ttl; 336 uint8_t msg_type; /* see ICMP message types above */ 337 uint8_t dst[ETH_ALEN]; 338 uint8_t orig[ETH_ALEN]; 339 uint8_t uid; 340 uint8_t subtype; 341 uint8_t session[2]; 342 uint32_t seqno; 343 uint32_t timestamp; 344 }; 345 346 /** 347 * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes 348 * @BATADV_TP_MSG: Msg from sender to receiver 349 * @BATADV_TP_ACK: acknowledgment from receiver to sender 350 */ 351 enum batadv_icmp_tp_subtype { 352 BATADV_TP_MSG = 0, 353 BATADV_TP_ACK, 354 }; 355 356 #define BATADV_RR_LEN 16 357 358 /** 359 * struct batadv_icmp_packet_rr - ICMP RouteRecord packet 360 * @packet_type: batman-adv packet type, part of the general header 361 * @version: batman-adv protocol version, part of the general header 362 * @ttl: time to live for this packet, part of the general header 363 * @msg_type: ICMP packet type 364 * @dst: address of the destination node 365 * @orig: address of the source node 366 * @uid: local ICMP socket identifier 367 * @rr_cur: number of entries the rr array 368 * @seqno: ICMP sequence number 369 * @rr: route record array 370 */ 371 struct batadv_icmp_packet_rr { 372 uint8_t packet_type; 373 uint8_t version; 374 uint8_t ttl; 375 uint8_t msg_type; /* see ICMP message types above */ 376 uint8_t dst[ETH_ALEN]; 377 uint8_t orig[ETH_ALEN]; 378 uint8_t uid; 379 uint8_t rr_cur; 380 uint16_t seqno; 381 uint8_t rr[BATADV_RR_LEN][ETH_ALEN]; 382 }; 383 384 #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) 385 386 /* All packet headers in front of an ethernet header have to be completely 387 * divisible by 2 but not by 4 to make the payload after the ethernet 388 * header again 4 bytes boundary aligned. 389 * 390 * A packing of 2 is necessary to avoid extra padding at the end of the struct 391 * caused by a structure member which is larger than two bytes. Otherwise 392 * the structure would not fulfill the previously mentioned rule to avoid the 393 * misalignment of the payload after the ethernet header. It may also lead to 394 * leakage of information when the padding it not initialized before sending. 395 */ 396 397 /** 398 * struct batadv_unicast_packet - unicast packet for network payload 399 * @packet_type: batman-adv packet type, part of the general header 400 * @version: batman-adv protocol version, part of the general header 401 * @ttl: time to live for this packet, part of the general header 402 * @ttvn: translation table version number 403 * @dest: originator destination of the unicast packet 404 */ 405 struct batadv_unicast_packet { 406 uint8_t packet_type; 407 uint8_t version; 408 uint8_t ttl; 409 uint8_t ttvn; /* destination translation table version number */ 410 uint8_t dest[ETH_ALEN]; 411 /* "4 bytes boundary + 2 bytes" long to make the payload after the 412 * following ethernet header again 4 bytes boundary aligned 413 */ 414 }; 415 416 /** 417 * struct batadv_unicast_4addr_packet - extended unicast packet 418 * @u: common unicast packet header 419 * @src: address of the source 420 * @subtype: packet subtype 421 * @reserved: reserved byte for alignment 422 */ 423 struct batadv_unicast_4addr_packet { 424 struct batadv_unicast_packet u; 425 uint8_t src[ETH_ALEN]; 426 uint8_t subtype; 427 uint8_t reserved; 428 /* "4 bytes boundary + 2 bytes" long to make the payload after the 429 * following ethernet header again 4 bytes boundary aligned 430 */ 431 }; 432 433 /** 434 * struct batadv_frag_packet - fragmented packet 435 * @packet_type: batman-adv packet type, part of the general header 436 * @version: batman-adv protocol version, part of the general header 437 * @ttl: time to live for this packet, part of the general header 438 * @dest: final destination used when routing fragments 439 * @orig: originator of the fragment used when merging the packet 440 * @no: fragment number within this sequence 441 * @priority: priority of frame, from ToS IP precedence or 802.1p 442 * @reserved: reserved byte for alignment 443 * @seqno: sequence identification 444 * @total_size: size of the merged packet 445 */ 446 struct batadv_frag_packet { 447 uint8_t packet_type; 448 uint8_t version; /* batman version field */ 449 uint8_t ttl; 450 #if defined(__BIG_ENDIAN_BITFIELD) 451 uint8_t no:4; 452 uint8_t priority:3; 453 uint8_t reserved:1; 454 #elif defined(__LITTLE_ENDIAN_BITFIELD) 455 uint8_t reserved:1; 456 uint8_t priority:3; 457 uint8_t no:4; 458 #else 459 #error "unknown bitfield endianness" 460 #endif 461 uint8_t dest[ETH_ALEN]; 462 uint8_t orig[ETH_ALEN]; 463 uint16_t seqno; 464 uint16_t total_size; 465 }; 466 467 /** 468 * struct batadv_bcast_packet - broadcast packet for network payload 469 * @packet_type: batman-adv packet type, part of the general header 470 * @version: batman-adv protocol version, part of the general header 471 * @ttl: time to live for this packet, part of the general header 472 * @reserved: reserved byte for alignment 473 * @seqno: sequence identification 474 * @orig: originator of the broadcast packet 475 */ 476 struct batadv_bcast_packet { 477 uint8_t packet_type; 478 uint8_t version; /* batman version field */ 479 uint8_t ttl; 480 uint8_t reserved; 481 uint32_t seqno; 482 uint8_t orig[ETH_ALEN]; 483 /* "4 bytes boundary + 2 bytes" long to make the payload after the 484 * following ethernet header again 4 bytes boundary aligned 485 */ 486 }; 487 488 /** 489 * struct batadv_coded_packet - network coded packet 490 * @packet_type: batman-adv packet type, part of the general header 491 * @version: batman-adv protocol version, part of the general header 492 * @ttl: time to live for this packet, part of the general header 493 * @first_source: original source of first included packet 494 * @first_orig_dest: original destination of first included packet 495 * @first_crc: checksum of first included packet 496 * @first_ttvn: tt-version number of first included packet 497 * @second_ttl: ttl of second packet 498 * @second_dest: second receiver of this coded packet 499 * @second_source: original source of second included packet 500 * @second_orig_dest: original destination of second included packet 501 * @second_crc: checksum of second included packet 502 * @second_ttvn: tt version number of second included packet 503 * @coded_len: length of network coded part of the payload 504 */ 505 struct batadv_coded_packet { 506 uint8_t packet_type; 507 uint8_t version; /* batman version field */ 508 uint8_t ttl; 509 uint8_t first_ttvn; 510 /* uint8_t first_dest[ETH_ALEN]; - saved in mac header destination */ 511 uint8_t first_source[ETH_ALEN]; 512 uint8_t first_orig_dest[ETH_ALEN]; 513 uint32_t first_crc; 514 uint8_t second_ttl; 515 uint8_t second_ttvn; 516 uint8_t second_dest[ETH_ALEN]; 517 uint8_t second_source[ETH_ALEN]; 518 uint8_t second_orig_dest[ETH_ALEN]; 519 uint32_t second_crc; 520 uint16_t coded_len; 521 }; 522 523 /** 524 * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload 525 * @packet_type: batman-adv packet type, part of the general header 526 * @version: batman-adv protocol version, part of the general header 527 * @ttl: time to live for this packet, part of the general header 528 * @reserved: reserved field (for packet alignment) 529 * @src: address of the source 530 * @dst: address of the destination 531 * @tvlv_len: length of tvlv data following the unicast tvlv header 532 * @align: 2 bytes to align the header to a 4 byte boundary 533 */ 534 struct batadv_unicast_tvlv_packet { 535 uint8_t packet_type; 536 uint8_t version; /* batman version field */ 537 uint8_t ttl; 538 uint8_t reserved; 539 uint8_t dst[ETH_ALEN]; 540 uint8_t src[ETH_ALEN]; 541 uint16_t tvlv_len; 542 uint16_t align; 543 }; 544 545 /** 546 * struct batadv_tvlv_hdr - base tvlv header struct 547 * @type: tvlv container type (see batadv_tvlv_type) 548 * @version: tvlv container version 549 * @len: tvlv container length 550 */ 551 struct batadv_tvlv_hdr { 552 uint8_t type; 553 uint8_t version; 554 uint16_t len; 555 }; 556 557 /** 558 * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv 559 * container 560 * @bandwidth_down: advertised uplink download bandwidth 561 * @bandwidth_up: advertised uplink upload bandwidth 562 */ 563 struct batadv_tvlv_gateway_data { 564 uint32_t bandwidth_down; 565 uint32_t bandwidth_up; 566 }; 567 568 /** 569 * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container 570 * @flags: translation table flags (see batadv_tt_data_flags) 571 * @ttvn: translation table version number 572 * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by 573 * one batadv_tvlv_tt_vlan_data object per announced vlan 574 */ 575 struct batadv_tvlv_tt_data { 576 uint8_t flags; 577 uint8_t ttvn; 578 uint16_t num_vlan; 579 }; 580 581 /** 582 * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through 583 * the tt tvlv container 584 * @crc: crc32 checksum of the entries belonging to this vlan 585 * @vid: vlan identifier 586 * @reserved: unused, useful for alignment purposes 587 */ 588 struct batadv_tvlv_tt_vlan_data { 589 uint32_t crc; 590 uint16_t vid; 591 uint16_t reserved; 592 }; 593 594 /** 595 * struct batadv_tvlv_tt_change - translation table diff data 596 * @flags: status indicators concerning the non-mesh client (see 597 * batadv_tt_client_flags) 598 * @reserved: reserved field - useful for alignment purposes only 599 * @addr: mac address of non-mesh client that triggered this tt change 600 * @vid: VLAN identifier 601 */ 602 struct batadv_tvlv_tt_change { 603 uint8_t flags; 604 uint8_t reserved[3]; 605 uint8_t addr[ETH_ALEN]; 606 uint16_t vid; 607 }; 608 609 /** 610 * struct batadv_tvlv_roam_adv - roaming advertisement 611 * @client: mac address of roaming client 612 * @vid: VLAN identifier 613 */ 614 struct batadv_tvlv_roam_adv { 615 uint8_t client[ETH_ALEN]; 616 uint16_t vid; 617 }; 618 619 /** 620 * struct batadv_tvlv_mcast_data - payload of a multicast tvlv 621 * @flags: multicast flags announced by the orig node 622 * @reserved: reserved field 623 */ 624 struct batadv_tvlv_mcast_data { 625 uint8_t flags; 626 uint8_t reserved[3]; 627 }; 628 629 #pragma pack() 630 631 #endif /* _UAPI_LINUX_BATADV_PACKET_H_ */ 632