batadv_packet.h (21786B) - Raw
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 _LINUX_BATADV_PACKET_H_ 8 #define _LINUX_BATADV_PACKET_H_ 9 10 #include <asm/byteorder.h> 11 #include <linux/if_ether.h> 12 #include <linux/stddef.h> 13 #include <linux/types.h> 14 15 /** 16 * batadv_tp_is_error() - Check throughput meter return code for error 17 * @n: throughput meter return code 18 * 19 * Return: 0 when not error was detected, != 0 otherwise 20 */ 21 #define batadv_tp_is_error(n) ((__u8)(n) > 127 ? 1 : 0) 22 23 /** 24 * enum batadv_packettype - types for batman-adv encapsulated packets 25 * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV 26 * @BATADV_BCAST: broadcast packets carrying broadcast payload 27 * @BATADV_CODED: network coded packets 28 * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V 29 * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V 30 * @BATADV_MCAST: multicast packet with multiple destination addresses 31 * 32 * @BATADV_UNICAST: unicast packets carrying unicast payload traffic 33 * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original 34 * payload packet 35 * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of 36 * the sender 37 * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute 38 * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers 39 */ 40 enum batadv_packettype { 41 /* 0x00 - 0x3f: local packets or special rules for handling */ 42 BATADV_IV_OGM = 0x00, 43 BATADV_BCAST = 0x01, 44 BATADV_CODED = 0x02, 45 BATADV_ELP = 0x03, 46 BATADV_OGM2 = 0x04, 47 BATADV_MCAST = 0x05, 48 /* 0x40 - 0x7f: unicast */ 49 #define BATADV_UNICAST_MIN 0x40 50 BATADV_UNICAST = 0x40, 51 BATADV_UNICAST_FRAG = 0x41, 52 BATADV_UNICAST_4ADDR = 0x42, 53 BATADV_ICMP = 0x43, 54 BATADV_UNICAST_TVLV = 0x44, 55 #define BATADV_UNICAST_MAX 0x7f 56 /* 0x80 - 0xff: reserved */ 57 }; 58 59 /** 60 * enum batadv_subtype - packet subtype for unicast4addr 61 * @BATADV_P_DATA: user payload 62 * @BATADV_P_DAT_DHT_GET: DHT request message 63 * @BATADV_P_DAT_DHT_PUT: DHT store message 64 * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT 65 */ 66 enum batadv_subtype { 67 BATADV_P_DATA = 0x01, 68 BATADV_P_DAT_DHT_GET = 0x02, 69 BATADV_P_DAT_DHT_PUT = 0x03, 70 BATADV_P_DAT_CACHE_REPLY = 0x04, 71 }; 72 73 /* this file is included by batctl which needs these defines */ 74 #define BATADV_COMPAT_VERSION 15 75 76 /** 77 * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets 78 * @BATADV_NOT_BEST_NEXT_HOP: flag is set when the ogm packet is forwarded and 79 * was previously received from someone other than the best neighbor. 80 * @BATADV_PRIMARIES_FIRST_HOP: flag unused. 81 * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a 82 * one hop neighbor on the interface where it was originally received. 83 */ 84 enum batadv_iv_flags { 85 BATADV_NOT_BEST_NEXT_HOP = 1UL << 0, 86 BATADV_PRIMARIES_FIRST_HOP = 1UL << 1, 87 BATADV_DIRECTLINK = 1UL << 2, 88 }; 89 90 /** 91 * enum batadv_icmp_packettype - ICMP message types 92 * @BATADV_ECHO_REPLY: success reply to BATADV_ECHO_REQUEST 93 * @BATADV_DESTINATION_UNREACHABLE: failure when route to destination not found 94 * @BATADV_ECHO_REQUEST: request BATADV_ECHO_REPLY from destination 95 * @BATADV_TTL_EXCEEDED: error after BATADV_ECHO_REQUEST traversed too many hops 96 * @BATADV_PARAMETER_PROBLEM: return code for malformed messages 97 * @BATADV_TP: throughput meter packet 98 */ 99 enum batadv_icmp_packettype { 100 BATADV_ECHO_REPLY = 0, 101 BATADV_DESTINATION_UNREACHABLE = 3, 102 BATADV_ECHO_REQUEST = 8, 103 BATADV_TTL_EXCEEDED = 11, 104 BATADV_PARAMETER_PROBLEM = 12, 105 BATADV_TP = 15, 106 }; 107 108 /** 109 * enum batadv_mcast_flags - flags for multicast capabilities and settings 110 * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for 111 * 224.0.0.0/24 or ff02::1 112 * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets 113 * (both link-local and routable ones) 114 * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets 115 * (both link-local and routable ones) 116 * @BATADV_MCAST_WANT_NO_RTR4: we have no IPv4 multicast router and therefore 117 * only need routable IPv4 multicast packets we signed up for explicitly 118 * @BATADV_MCAST_WANT_NO_RTR6: we have no IPv6 multicast router and therefore 119 * only need routable IPv6 multicast packets we signed up for explicitly 120 * @BATADV_MCAST_HAVE_MC_PTYPE_CAPA: we can parse, receive and forward 121 * batman-adv multicast packets with a multicast tracker TVLV. And all our 122 * hard interfaces have an MTU of at least 1280 bytes. 123 */ 124 enum batadv_mcast_flags { 125 BATADV_MCAST_WANT_ALL_UNSNOOPABLES = 1UL << 0, 126 BATADV_MCAST_WANT_ALL_IPV4 = 1UL << 1, 127 BATADV_MCAST_WANT_ALL_IPV6 = 1UL << 2, 128 BATADV_MCAST_WANT_NO_RTR4 = 1UL << 3, 129 BATADV_MCAST_WANT_NO_RTR6 = 1UL << 4, 130 BATADV_MCAST_HAVE_MC_PTYPE_CAPA = 1UL << 5, 131 }; 132 133 /* tt data subtypes */ 134 #define BATADV_TT_DATA_TYPE_MASK 0x0F 135 136 /** 137 * enum batadv_tt_data_flags - flags for tt data tvlv 138 * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM 139 * @BATADV_TT_REQUEST: TT request message 140 * @BATADV_TT_RESPONSE: TT response message 141 * @BATADV_TT_FULL_TABLE: contains full table to replace existing table 142 */ 143 enum batadv_tt_data_flags { 144 BATADV_TT_OGM_DIFF = 1UL << 0, 145 BATADV_TT_REQUEST = 1UL << 1, 146 BATADV_TT_RESPONSE = 1UL << 2, 147 BATADV_TT_FULL_TABLE = 1UL << 4, 148 }; 149 150 /** 151 * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field 152 * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not 153 */ 154 enum batadv_vlan_flags { 155 BATADV_VLAN_HAS_TAG = 1UL << 15, 156 }; 157 158 /** 159 * enum batadv_bla_claimframe - claim frame types for the bridge loop avoidance 160 * @BATADV_CLAIM_TYPE_CLAIM: claim of a client mac address 161 * @BATADV_CLAIM_TYPE_UNCLAIM: unclaim of a client mac address 162 * @BATADV_CLAIM_TYPE_ANNOUNCE: announcement of backbone with current crc 163 * @BATADV_CLAIM_TYPE_REQUEST: request of full claim table 164 * @BATADV_CLAIM_TYPE_LOOPDETECT: mesh-traversing loop detect packet 165 */ 166 enum batadv_bla_claimframe { 167 BATADV_CLAIM_TYPE_CLAIM = 0x00, 168 BATADV_CLAIM_TYPE_UNCLAIM = 0x01, 169 BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, 170 BATADV_CLAIM_TYPE_REQUEST = 0x03, 171 BATADV_CLAIM_TYPE_LOOPDETECT = 0x04, 172 }; 173 174 /** 175 * enum batadv_tvlv_type - tvlv type definitions 176 * @BATADV_TVLV_GW: gateway tvlv 177 * @BATADV_TVLV_DAT: distributed arp table tvlv 178 * @BATADV_TVLV_NC: network coding tvlv 179 * @BATADV_TVLV_TT: translation table tvlv 180 * @BATADV_TVLV_ROAM: roaming advertisement tvlv 181 * @BATADV_TVLV_MCAST: multicast capability tvlv 182 * @BATADV_TVLV_MCAST_TRACKER: multicast tracker tvlv 183 */ 184 enum batadv_tvlv_type { 185 BATADV_TVLV_GW = 0x01, 186 BATADV_TVLV_DAT = 0x02, 187 BATADV_TVLV_NC = 0x03, 188 BATADV_TVLV_TT = 0x04, 189 BATADV_TVLV_ROAM = 0x05, 190 BATADV_TVLV_MCAST = 0x06, 191 BATADV_TVLV_MCAST_TRACKER = 0x07, 192 }; 193 194 #pragma pack(2) 195 /* the destination hardware field in the ARP frame is used to 196 * transport the claim type and the group id 197 */ 198 struct batadv_bla_claim_dst { 199 __u8 magic[3]; /* FF:43:05 */ 200 __u8 type; /* bla_claimframe */ 201 __be16 group; /* group id */ 202 }; 203 204 /** 205 * struct batadv_ogm_packet - ogm (routing protocol) packet 206 * @packet_type: batman-adv packet type, part of the general header 207 * @version: batman-adv protocol version, part of the general header 208 * @ttl: time to live for this packet, part of the general header 209 * @flags: contains routing relevant flags - see enum batadv_iv_flags 210 * @seqno: sequence identification 211 * @orig: address of the source node 212 * @prev_sender: address of the previous sender 213 * @reserved: reserved byte for alignment 214 * @tq: transmission quality 215 * @tvlv_len: length of tvlv data following the ogm header 216 */ 217 struct batadv_ogm_packet { 218 __u8 packet_type; 219 __u8 version; 220 __u8 ttl; 221 __u8 flags; 222 __be32 seqno; 223 __u8 orig[ETH_ALEN]; 224 __u8 prev_sender[ETH_ALEN]; 225 __u8 reserved; 226 __u8 tq; 227 __be16 tvlv_len; 228 }; 229 230 #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) 231 232 /** 233 * struct batadv_ogm2_packet - ogm2 (routing protocol) packet 234 * @packet_type: batman-adv packet type, part of the general header 235 * @version: batman-adv protocol version, part of the general header 236 * @ttl: time to live for this packet, part of the general header 237 * @flags: reserved for routing relevant flags - currently always 0 238 * @seqno: sequence number 239 * @orig: originator mac address 240 * @tvlv_len: length of the appended tvlv buffer (in bytes) 241 * @throughput: the currently flooded path throughput 242 */ 243 struct batadv_ogm2_packet { 244 __u8 packet_type; 245 __u8 version; 246 __u8 ttl; 247 __u8 flags; 248 __be32 seqno; 249 __u8 orig[ETH_ALEN]; 250 __be16 tvlv_len; 251 __be32 throughput; 252 }; 253 254 #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet) 255 256 /** 257 * struct batadv_elp_packet - elp (neighbor discovery) packet 258 * @packet_type: batman-adv packet type, part of the general header 259 * @version: batman-adv protocol version, part of the general header 260 * @orig: originator mac address 261 * @seqno: sequence number 262 * @elp_interval: currently used ELP sending interval in ms 263 */ 264 struct batadv_elp_packet { 265 __u8 packet_type; 266 __u8 version; 267 __u8 orig[ETH_ALEN]; 268 __be32 seqno; 269 __be32 elp_interval; 270 }; 271 272 #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet) 273 274 /** 275 * struct batadv_icmp_header - common members among all the ICMP packets 276 * @packet_type: batman-adv packet type, part of the general header 277 * @version: batman-adv protocol version, part of the general header 278 * @ttl: time to live for this packet, part of the general header 279 * @msg_type: ICMP packet type 280 * @dst: address of the destination node 281 * @orig: address of the source node 282 * @uid: local ICMP socket identifier 283 * @align: not used - useful for alignment purposes only 284 * 285 * This structure is used for ICMP packet parsing only and it is never sent 286 * over the wire. The alignment field at the end is there to ensure that 287 * members are padded the same way as they are in real packets. 288 */ 289 struct batadv_icmp_header { 290 __u8 packet_type; 291 __u8 version; 292 __u8 ttl; 293 __u8 msg_type; /* see ICMP message types above */ 294 __u8 dst[ETH_ALEN]; 295 __u8 orig[ETH_ALEN]; 296 __u8 uid; 297 __u8 align[3]; 298 }; 299 300 /** 301 * struct batadv_icmp_packet - ICMP packet 302 * @packet_type: batman-adv packet type, part of the general header 303 * @version: batman-adv protocol version, part of the general header 304 * @ttl: time to live for this packet, part of the general header 305 * @msg_type: ICMP packet type 306 * @dst: address of the destination node 307 * @orig: address of the source node 308 * @uid: local ICMP socket identifier 309 * @reserved: not used - useful for alignment 310 * @seqno: ICMP sequence number 311 */ 312 struct batadv_icmp_packet { 313 __u8 packet_type; 314 __u8 version; 315 __u8 ttl; 316 __u8 msg_type; /* see ICMP message types above */ 317 __u8 dst[ETH_ALEN]; 318 __u8 orig[ETH_ALEN]; 319 __u8 uid; 320 __u8 reserved; 321 __be16 seqno; 322 }; 323 324 /** 325 * struct batadv_icmp_tp_packet - ICMP TP Meter packet 326 * @packet_type: batman-adv packet type, part of the general header 327 * @version: batman-adv protocol version, part of the general header 328 * @ttl: time to live for this packet, part of the general header 329 * @msg_type: ICMP packet type 330 * @dst: address of the destination node 331 * @orig: address of the source node 332 * @uid: local ICMP socket identifier 333 * @subtype: TP packet subtype (see batadv_icmp_tp_subtype) 334 * @session: TP session identifier 335 * @seqno: the TP sequence number 336 * @timestamp: time when the packet has been sent. This value is filled in a 337 * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the 338 * RTT. Since it is read only by the host which wrote it, there is no need to 339 * store it using network order 340 */ 341 struct batadv_icmp_tp_packet { 342 __u8 packet_type; 343 __u8 version; 344 __u8 ttl; 345 __u8 msg_type; /* see ICMP message types above */ 346 __u8 dst[ETH_ALEN]; 347 __u8 orig[ETH_ALEN]; 348 __u8 uid; 349 __u8 subtype; 350 __u8 session[2]; 351 __be32 seqno; 352 __be32 timestamp; 353 }; 354 355 /** 356 * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes 357 * @BATADV_TP_MSG: Msg from sender to receiver 358 * @BATADV_TP_ACK: acknowledgment from receiver to sender 359 */ 360 enum batadv_icmp_tp_subtype { 361 BATADV_TP_MSG = 0, 362 BATADV_TP_ACK, 363 }; 364 365 #define BATADV_RR_LEN 16 366 367 /** 368 * struct batadv_icmp_packet_rr - ICMP RouteRecord packet 369 * @packet_type: batman-adv packet type, part of the general header 370 * @version: batman-adv protocol version, part of the general header 371 * @ttl: time to live for this packet, part of the general header 372 * @msg_type: ICMP packet type 373 * @dst: address of the destination node 374 * @orig: address of the source node 375 * @uid: local ICMP socket identifier 376 * @rr_cur: number of entries the rr array 377 * @seqno: ICMP sequence number 378 * @rr: route record array 379 */ 380 struct batadv_icmp_packet_rr { 381 __u8 packet_type; 382 __u8 version; 383 __u8 ttl; 384 __u8 msg_type; /* see ICMP message types above */ 385 __u8 dst[ETH_ALEN]; 386 __u8 orig[ETH_ALEN]; 387 __u8 uid; 388 __u8 rr_cur; 389 __be16 seqno; 390 __u8 rr[BATADV_RR_LEN][ETH_ALEN]; 391 }; 392 393 #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) 394 395 /* All packet headers in front of an ethernet header have to be completely 396 * divisible by 2 but not by 4 to make the payload after the ethernet 397 * header again 4 bytes boundary aligned. 398 * 399 * A packing of 2 is necessary to avoid extra padding at the end of the struct 400 * caused by a structure member which is larger than two bytes. Otherwise 401 * the structure would not fulfill the previously mentioned rule to avoid the 402 * misalignment of the payload after the ethernet header. It may also lead to 403 * leakage of information when the padding it not initialized before sending. 404 */ 405 406 /** 407 * struct batadv_unicast_packet - unicast packet for network payload 408 * @packet_type: batman-adv packet type, part of the general header 409 * @version: batman-adv protocol version, part of the general header 410 * @ttl: time to live for this packet, part of the general header 411 * @ttvn: translation table version number 412 * @dest: originator destination of the unicast packet 413 */ 414 struct batadv_unicast_packet { 415 __u8 packet_type; 416 __u8 version; 417 __u8 ttl; 418 __u8 ttvn; /* destination translation table version number */ 419 __u8 dest[ETH_ALEN]; 420 /* "4 bytes boundary + 2 bytes" long to make the payload after the 421 * following ethernet header again 4 bytes boundary aligned 422 */ 423 }; 424 425 /** 426 * struct batadv_unicast_4addr_packet - extended unicast packet 427 * @u: common unicast packet header 428 * @src: address of the source 429 * @subtype: packet subtype 430 * @reserved: reserved byte for alignment 431 */ 432 struct batadv_unicast_4addr_packet { 433 struct batadv_unicast_packet u; 434 __u8 src[ETH_ALEN]; 435 __u8 subtype; 436 __u8 reserved; 437 /* "4 bytes boundary + 2 bytes" long to make the payload after the 438 * following ethernet header again 4 bytes boundary aligned 439 */ 440 }; 441 442 /** 443 * struct batadv_frag_packet - fragmented packet 444 * @packet_type: batman-adv packet type, part of the general header 445 * @version: batman-adv protocol version, part of the general header 446 * @ttl: time to live for this packet, part of the general header 447 * @dest: final destination used when routing fragments 448 * @orig: originator of the fragment used when merging the packet 449 * @no: fragment number within this sequence 450 * @priority: priority of frame, from ToS IP precedence or 802.1p 451 * @reserved: reserved byte for alignment 452 * @seqno: sequence identification 453 * @total_size: size of the merged packet 454 */ 455 struct batadv_frag_packet { 456 __u8 packet_type; 457 __u8 version; /* batman version field */ 458 __u8 ttl; 459 #if defined(__BIG_ENDIAN_BITFIELD) 460 __u8 no:4; 461 __u8 priority:3; 462 __u8 reserved:1; 463 #elif defined(__LITTLE_ENDIAN_BITFIELD) 464 __u8 reserved:1; 465 __u8 priority:3; 466 __u8 no:4; 467 #else 468 #error "unknown bitfield endianness" 469 #endif 470 __u8 dest[ETH_ALEN]; 471 __u8 orig[ETH_ALEN]; 472 __be16 seqno; 473 __be16 total_size; 474 }; 475 476 /** 477 * struct batadv_bcast_packet - broadcast packet for network payload 478 * @packet_type: batman-adv packet type, part of the general header 479 * @version: batman-adv protocol version, part of the general header 480 * @ttl: time to live for this packet, part of the general header 481 * @reserved: reserved byte for alignment 482 * @seqno: sequence identification 483 * @orig: originator of the broadcast packet 484 */ 485 struct batadv_bcast_packet { 486 __u8 packet_type; 487 __u8 version; /* batman version field */ 488 __u8 ttl; 489 __u8 reserved; 490 __be32 seqno; 491 __u8 orig[ETH_ALEN]; 492 /* "4 bytes boundary + 2 bytes" long to make the payload after the 493 * following ethernet header again 4 bytes boundary aligned 494 */ 495 }; 496 497 /** 498 * struct batadv_mcast_packet - multicast packet for network payload 499 * @packet_type: batman-adv packet type, part of the general header 500 * @version: batman-adv protocol version, part of the general header 501 * @ttl: time to live for this packet, part of the general header 502 * @reserved: reserved byte for alignment 503 * @tvlv_len: length of the appended tvlv buffer (in bytes) 504 */ 505 struct batadv_mcast_packet { 506 __u8 packet_type; 507 __u8 version; 508 __u8 ttl; 509 __u8 reserved; 510 __be16 tvlv_len; 511 /* "4 bytes boundary + 2 bytes" long to make the payload after the 512 * following ethernet header again 4 bytes boundary aligned 513 */ 514 }; 515 516 /** 517 * struct batadv_coded_packet - network coded packet 518 * @packet_type: batman-adv packet type, part of the general header 519 * @version: batman-adv protocol version, part of the general header 520 * @ttl: time to live for this packet, part of the general header 521 * @first_source: original source of first included packet 522 * @first_orig_dest: original destination of first included packet 523 * @first_crc: checksum of first included packet 524 * @first_ttvn: tt-version number of first included packet 525 * @second_ttl: ttl of second packet 526 * @second_dest: second receiver of this coded packet 527 * @second_source: original source of second included packet 528 * @second_orig_dest: original destination of second included packet 529 * @second_crc: checksum of second included packet 530 * @second_ttvn: tt version number of second included packet 531 * @coded_len: length of network coded part of the payload 532 */ 533 struct batadv_coded_packet { 534 __u8 packet_type; 535 __u8 version; /* batman version field */ 536 __u8 ttl; 537 __u8 first_ttvn; 538 /* __u8 first_dest[ETH_ALEN]; - saved in mac header destination */ 539 __u8 first_source[ETH_ALEN]; 540 __u8 first_orig_dest[ETH_ALEN]; 541 __be32 first_crc; 542 __u8 second_ttl; 543 __u8 second_ttvn; 544 __u8 second_dest[ETH_ALEN]; 545 __u8 second_source[ETH_ALEN]; 546 __u8 second_orig_dest[ETH_ALEN]; 547 __be32 second_crc; 548 __be16 coded_len; 549 }; 550 551 /** 552 * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload 553 * @packet_type: batman-adv packet type, part of the general header 554 * @version: batman-adv protocol version, part of the general header 555 * @ttl: time to live for this packet, part of the general header 556 * @reserved: reserved field (for packet alignment) 557 * @src: address of the source 558 * @dst: address of the destination 559 * @tvlv_len: length of tvlv data following the unicast tvlv header 560 * @align: 2 bytes to align the header to a 4 byte boundary 561 */ 562 struct batadv_unicast_tvlv_packet { 563 __u8 packet_type; 564 __u8 version; /* batman version field */ 565 __u8 ttl; 566 __u8 reserved; 567 __u8 dst[ETH_ALEN]; 568 __u8 src[ETH_ALEN]; 569 __be16 tvlv_len; 570 __u16 align; 571 }; 572 573 /** 574 * struct batadv_tvlv_hdr - base tvlv header struct 575 * @type: tvlv container type (see batadv_tvlv_type) 576 * @version: tvlv container version 577 * @len: tvlv container length 578 */ 579 struct batadv_tvlv_hdr { 580 __u8 type; 581 __u8 version; 582 __be16 len; 583 }; 584 585 /** 586 * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv 587 * container 588 * @bandwidth_down: advertised uplink download bandwidth 589 * @bandwidth_up: advertised uplink upload bandwidth 590 */ 591 struct batadv_tvlv_gateway_data { 592 __be32 bandwidth_down; 593 __be32 bandwidth_up; 594 }; 595 596 /** 597 * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through 598 * the tt tvlv container 599 * @crc: crc32 checksum of the entries belonging to this vlan 600 * @vid: vlan identifier 601 * @reserved: unused, useful for alignment purposes 602 */ 603 struct batadv_tvlv_tt_vlan_data { 604 __be32 crc; 605 __be16 vid; 606 __u16 reserved; 607 }; 608 609 /** 610 * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container 611 * @flags: translation table flags (see batadv_tt_data_flags) 612 * @ttvn: translation table version number 613 * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by 614 * one batadv_tvlv_tt_vlan_data object per announced vlan 615 * @vlan_data: array of batadv_tvlv_tt_vlan_data objects 616 */ 617 struct batadv_tvlv_tt_data { 618 __u8 flags; 619 __u8 ttvn; 620 __be16 num_vlan; 621 struct batadv_tvlv_tt_vlan_data vlan_data[] __counted_by_be(num_vlan); 622 }; 623 624 /** 625 * struct batadv_tvlv_tt_change - translation table diff data 626 * @flags: status indicators concerning the non-mesh client (see 627 * batadv_tt_client_flags) 628 * @reserved: reserved field - useful for alignment purposes only 629 * @addr: mac address of non-mesh client that triggered this tt change 630 * @vid: VLAN identifier 631 */ 632 struct batadv_tvlv_tt_change { 633 __u8 flags; 634 __u8 reserved[3]; 635 __u8 addr[ETH_ALEN]; 636 __be16 vid; 637 }; 638 639 /** 640 * struct batadv_tvlv_roam_adv - roaming advertisement 641 * @client: mac address of roaming client 642 * @vid: VLAN identifier 643 */ 644 struct batadv_tvlv_roam_adv { 645 __u8 client[ETH_ALEN]; 646 __be16 vid; 647 }; 648 649 /** 650 * struct batadv_tvlv_mcast_data - payload of a multicast tvlv 651 * @flags: multicast flags announced by the orig node 652 * @reserved: reserved field 653 */ 654 struct batadv_tvlv_mcast_data { 655 __u8 flags; 656 __u8 reserved[3]; 657 }; 658 659 /** 660 * struct batadv_tvlv_mcast_tracker - payload of a multicast tracker tvlv 661 * @num_dests: number of subsequent destination originator MAC addresses 662 */ 663 struct batadv_tvlv_mcast_tracker { 664 __be16 num_dests; 665 }; 666 667 #pragma pack() 668 669 #endif /* _LINUX_BATADV_PACKET_H_ */