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) ((__u8)(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 */ 38enum 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 */ 63enum 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 */ 81enum 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 */ 96enum 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 */ 118enum 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 */ 136enum 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 */ 147enum 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 */ 159enum 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 */ 176enum 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 */ 189struct batadv_bla_claim_dst { 190 __u8 magic[3]; /* FF:43:05 */ 191 __u8 type; /* bla_claimframe */ 192 __be16 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 */ 208struct batadv_ogm_packet { 209 __u8 packet_type; 210 __u8 version; 211 __u8 ttl; 212 __u8 flags; 213 __be32 seqno; 214 __u8 orig[ETH_ALEN]; 215 __u8 prev_sender[ETH_ALEN]; 216 __u8 reserved; 217 __u8 tq; 218 __be16 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 */ 234struct batadv_ogm2_packet { 235 __u8 packet_type; 236 __u8 version; 237 __u8 ttl; 238 __u8 flags; 239 __be32 seqno; 240 __u8 orig[ETH_ALEN]; 241 __be16 tvlv_len; 242 __be32 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 */ 255struct batadv_elp_packet { 256 __u8 packet_type; 257 __u8 version; 258 __u8 orig[ETH_ALEN]; 259 __be32 seqno; 260 __be32 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 */ 280struct batadv_icmp_header { 281 __u8 packet_type; 282 __u8 version; 283 __u8 ttl; 284 __u8 msg_type; /* see ICMP message types above */ 285 __u8 dst[ETH_ALEN]; 286 __u8 orig[ETH_ALEN]; 287 __u8 uid; 288 __u8 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 */ 303struct batadv_icmp_packet { 304 __u8 packet_type; 305 __u8 version; 306 __u8 ttl; 307 __u8 msg_type; /* see ICMP message types above */ 308 __u8 dst[ETH_ALEN]; 309 __u8 orig[ETH_ALEN]; 310 __u8 uid; 311 __u8 reserved; 312 __be16 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 */ 332struct batadv_icmp_tp_packet { 333 __u8 packet_type; 334 __u8 version; 335 __u8 ttl; 336 __u8 msg_type; /* see ICMP message types above */ 337 __u8 dst[ETH_ALEN]; 338 __u8 orig[ETH_ALEN]; 339 __u8 uid; 340 __u8 subtype; 341 __u8 session[2]; 342 __be32 seqno; 343 __be32 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 */ 351enum 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 */ 371struct batadv_icmp_packet_rr { 372 __u8 packet_type; 373 __u8 version; 374 __u8 ttl; 375 __u8 msg_type; /* see ICMP message types above */ 376 __u8 dst[ETH_ALEN]; 377 __u8 orig[ETH_ALEN]; 378 __u8 uid; 379 __u8 rr_cur; 380 __be16 seqno; 381 __u8 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 */ 405struct batadv_unicast_packet { 406 __u8 packet_type; 407 __u8 version; 408 __u8 ttl; 409 __u8 ttvn; /* destination translation table version number */ 410 __u8 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 */ 423struct batadv_unicast_4addr_packet { 424 struct batadv_unicast_packet u; 425 __u8 src[ETH_ALEN]; 426 __u8 subtype; 427 __u8 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 */ 446struct batadv_frag_packet { 447 __u8 packet_type; 448 __u8 version; /* batman version field */ 449 __u8 ttl; 450#if defined(__BIG_ENDIAN_BITFIELD) 451 __u8 no:4; 452 __u8 priority:3; 453 __u8 reserved:1; 454#elif defined(__LITTLE_ENDIAN_BITFIELD) 455 __u8 reserved:1; 456 __u8 priority:3; 457 __u8 no:4; 458#else 459#error "unknown bitfield endianness" 460#endif 461 __u8 dest[ETH_ALEN]; 462 __u8 orig[ETH_ALEN]; 463 __be16 seqno; 464 __be16 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 */ 476struct batadv_bcast_packet { 477 __u8 packet_type; 478 __u8 version; /* batman version field */ 479 __u8 ttl; 480 __u8 reserved; 481 __be32 seqno; 482 __u8 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 */ 505struct batadv_coded_packet { 506 __u8 packet_type; 507 __u8 version; /* batman version field */ 508 __u8 ttl; 509 __u8 first_ttvn; 510 /* __u8 first_dest[ETH_ALEN]; - saved in mac header destination */ 511 __u8 first_source[ETH_ALEN]; 512 __u8 first_orig_dest[ETH_ALEN]; 513 __be32 first_crc; 514 __u8 second_ttl; 515 __u8 second_ttvn; 516 __u8 second_dest[ETH_ALEN]; 517 __u8 second_source[ETH_ALEN]; 518 __u8 second_orig_dest[ETH_ALEN]; 519 __be32 second_crc; 520 __be16 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 */ 534struct batadv_unicast_tvlv_packet { 535 __u8 packet_type; 536 __u8 version; /* batman version field */ 537 __u8 ttl; 538 __u8 reserved; 539 __u8 dst[ETH_ALEN]; 540 __u8 src[ETH_ALEN]; 541 __be16 tvlv_len; 542 __u16 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 */ 551struct batadv_tvlv_hdr { 552 __u8 type; 553 __u8 version; 554 __be16 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 */ 563struct batadv_tvlv_gateway_data { 564 __be32 bandwidth_down; 565 __be32 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 */ 575struct batadv_tvlv_tt_data { 576 __u8 flags; 577 __u8 ttvn; 578 __be16 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 */ 588struct batadv_tvlv_tt_vlan_data { 589 __be32 crc; 590 __be16 vid; 591 __u16 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 */ 602struct batadv_tvlv_tt_change { 603 __u8 flags; 604 __u8 reserved[3]; 605 __u8 addr[ETH_ALEN]; 606 __be16 vid; 607}; 608 609/** 610 * struct batadv_tvlv_roam_adv - roaming advertisement 611 * @client: mac address of roaming client 612 * @vid: VLAN identifier 613 */ 614struct batadv_tvlv_roam_adv { 615 __u8 client[ETH_ALEN]; 616 __be16 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 */ 624struct batadv_tvlv_mcast_data { 625 __u8 flags; 626 __u8 reserved[3]; 627}; 628 629#pragma pack() 630 631#endif /* _UAPI_LINUX_BATADV_PACKET_H_ */ 632