include/uapi/linux/batadv_packet.h

   1 /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */
   2 /* Copyright (C) 2007-2017  B.A.T.M.A.N. contributors:
   3  *
   4  * Marek Lindner, Simon Wunderlich
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef _UAPI_LINUX_BATADV_PACKET_H_
  20 #define _UAPI_LINUX_BATADV_PACKET_H_
  21
  22 #include <asm/byteorder.h>
  23 #include <linux/if_ether.h>
  24 #include <linux/types.h>
  25
  26 /**
  27  * batadv_tp_is_error() - Check throughput meter return code for error
  28  * @n: throughput meter return code
  29  *
  30  * Return: 0 when not error was detected, != 0 otherwise
  31  */
  32 #define batadv_tp_is_error(n) ((__u8)(n) > 127 ? 1 : 0)
  33
  34 /**
  35  * enum batadv_packettype - types for batman-adv encapsulated packets
  36  * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV
  37  * @BATADV_BCAST: broadcast packets carrying broadcast payload
  38  * @BATADV_CODED: network coded packets
  39  * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V
  40  * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V
  41  *
  42  * @BATADV_UNICAST: unicast packets carrying unicast payload traffic
  43  * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original
  44  *     payload packet
  45  * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of
  46  *     the sender
  47  * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute
  48  * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers
  49  */
  50 enum batadv_packettype {
  51         /* 0x00 - 0x3f: local packets or special rules for handling */
  52         BATADV_IV_OGM           = 0x00,
  53         BATADV_BCAST            = 0x01,
  54         BATADV_CODED            = 0x02,
  55         BATADV_ELP              = 0x03,
  56         BATADV_OGM2             = 0x04,
  57         /* 0x40 - 0x7f: unicast */
  58 #define BATADV_UNICAST_MIN     0x40
  59         BATADV_UNICAST          = 0x40,
  60         BATADV_UNICAST_FRAG     = 0x41,
  61         BATADV_UNICAST_4ADDR    = 0x42,
  62         BATADV_ICMP             = 0x43,
  63         BATADV_UNICAST_TVLV     = 0x44,
  64 #define BATADV_UNICAST_MAX     0x7f
  65         /* 0x80 - 0xff: reserved */
  66 };
  67
  68 /**
  69  * enum batadv_subtype - packet subtype for unicast4addr
  70  * @BATADV_P_DATA: user payload
  71  * @BATADV_P_DAT_DHT_GET: DHT request message
  72  * @BATADV_P_DAT_DHT_PUT: DHT store message
  73  * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT
  74  */
  75 enum batadv_subtype {
  76         BATADV_P_DATA                   = 0x01,
  77         BATADV_P_DAT_DHT_GET            = 0x02,
  78         BATADV_P_DAT_DHT_PUT            = 0x03,
  79         BATADV_P_DAT_CACHE_REPLY        = 0x04,
  80 };
  81
  82 /* this file is included by batctl which needs these defines */
  83 #define BATADV_COMPAT_VERSION 15
  84
  85 /**
  86  * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets
  87  * @BATADV_NOT_BEST_NEXT_HOP: flag is set when ogm packet is forwarded and was
  88  *     previously received from someone else than the best neighbor.
  89  * @BATADV_PRIMARIES_FIRST_HOP: flag unused.
  90  * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a
  91  *     one hop neighbor on the interface where it was originally received.
  92  */
  93 enum batadv_iv_flags {
  94         BATADV_NOT_BEST_NEXT_HOP   = 1UL << 0,
  95         BATADV_PRIMARIES_FIRST_HOP = 1UL << 1,
  96         BATADV_DIRECTLINK          = 1UL << 2,
  97 };
  98
  99 /**
 100  * enum batadv_icmp_packettype - ICMP message types
 101  * @BATADV_ECHO_REPLY: success reply to BATADV_ECHO_REQUEST
 102  * @BATADV_DESTINATION_UNREACHABLE: failure when route to destination not found
 103  * @BATADV_ECHO_REQUEST: request BATADV_ECHO_REPLY from destination
 104  * @BATADV_TTL_EXCEEDED: error after BATADV_ECHO_REQUEST traversed too many hops
 105  * @BATADV_PARAMETER_PROBLEM: return code for malformed messages
 106  * @BATADV_TP: throughput meter packet
 107  */
 108 enum batadv_icmp_packettype {
 109         BATADV_ECHO_REPLY              = 0,
 110         BATADV_DESTINATION_UNREACHABLE = 3,
 111         BATADV_ECHO_REQUEST            = 8,
 112         BATADV_TTL_EXCEEDED            = 11,
 113         BATADV_PARAMETER_PROBLEM       = 12,
 114         BATADV_TP                      = 15,
 115 };
 116
 117 /**
 118  * enum batadv_mcast_flags - flags for multicast capabilities and settings
 119  * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for
 120  *  224.0.0.0/24 or ff02::1
 121  * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets
 122  * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
 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 };
 129
 130 /* tt data subtypes */
 131 #define BATADV_TT_DATA_TYPE_MASK 0x0F
 132
 133 /**
 134  * enum batadv_tt_data_flags - flags for tt data tvlv
 135  * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM
 136  * @BATADV_TT_REQUEST: TT request message
 137  * @BATADV_TT_RESPONSE: TT response message
 138  * @BATADV_TT_FULL_TABLE: contains full table to replace existing table
 139  */
 140 enum batadv_tt_data_flags {
 141         BATADV_TT_OGM_DIFF   = 1UL << 0,
 142         BATADV_TT_REQUEST    = 1UL << 1,
 143         BATADV_TT_RESPONSE   = 1UL << 2,
 144         BATADV_TT_FULL_TABLE = 1UL << 4,
 145 };
 146
 147 /**
 148  * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field
 149  * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
 150  */
 151 enum batadv_vlan_flags {
 152         BATADV_VLAN_HAS_TAG     = 1UL << 15,
 153 };
 154
 155 /**
 156  * enum batadv_bla_claimframe - claim frame types for the bridge loop avoidance
 157  * @BATADV_CLAIM_TYPE_CLAIM: claim of a client mac address
 158  * @BATADV_CLAIM_TYPE_UNCLAIM: unclaim of a client mac address
 159  * @BATADV_CLAIM_TYPE_ANNOUNCE: announcement of backbone with current crc
 160  * @BATADV_CLAIM_TYPE_REQUEST: request of full claim table
 161  * @BATADV_CLAIM_TYPE_LOOPDETECT: mesh-traversing loop detect packet
 162  */
 163 enum batadv_bla_claimframe {
 164         BATADV_CLAIM_TYPE_CLAIM         = 0x00,
 165         BATADV_CLAIM_TYPE_UNCLAIM       = 0x01,
 166         BATADV_CLAIM_TYPE_ANNOUNCE      = 0x02,
 167         BATADV_CLAIM_TYPE_REQUEST       = 0x03,
 168         BATADV_CLAIM_TYPE_LOOPDETECT    = 0x04,
 169 };
 170
 171 /**
 172  * enum batadv_tvlv_type - tvlv type definitions
 173  * @BATADV_TVLV_GW: gateway tvlv
 174  * @BATADV_TVLV_DAT: distributed arp table tvlv
 175  * @BATADV_TVLV_NC: network coding tvlv
 176  * @BATADV_TVLV_TT: translation table tvlv
 177  * @BATADV_TVLV_ROAM: roaming advertisement tvlv
 178  * @BATADV_TVLV_MCAST: multicast capability tvlv
 179  */
 180 enum batadv_tvlv_type {
 181         BATADV_TVLV_GW          = 0x01,
 182         BATADV_TVLV_DAT         = 0x02,
 183         BATADV_TVLV_NC          = 0x03,
 184         BATADV_TVLV_TT          = 0x04,
 185         BATADV_TVLV_ROAM        = 0x05,
 186         BATADV_TVLV_MCAST       = 0x06,
 187 };
 188
 189 #pragma pack(2)
 190 /* the destination hardware field in the ARP frame is used to
 191  * transport the claim type and the group id
 192  */
 193 struct batadv_bla_claim_dst {
 194         __u8   magic[3];        /* FF:43:05 */
 195         __u8   type;            /* bla_claimframe */
 196         __be16 group;           /* group id */
 197 };
 198
 199 #pragma pack()
 200
 201 /**
 202  * struct batadv_ogm_packet - ogm (routing protocol) packet
 203  * @packet_type: batman-adv packet type, part of the general header
 204  * @version: batman-adv protocol version, part of the genereal header
 205  * @ttl: time to live for this packet, part of the genereal header
 206  * @flags: contains routing relevant flags - see enum batadv_iv_flags
 207  * @seqno: sequence identification
 208  * @orig: address of the source node
 209  * @prev_sender: address of the previous sender
 210  * @reserved: reserved byte for alignment
 211  * @tq: transmission quality
 212  * @tvlv_len: length of tvlv data following the ogm header
 213  */
 214 struct batadv_ogm_packet {
 215         __u8   packet_type;
 216         __u8   version;
 217         __u8   ttl;
 218         __u8   flags;
 219         __be32 seqno;
 220         __u8   orig[ETH_ALEN];
 221         __u8   prev_sender[ETH_ALEN];
 222         __u8   reserved;
 223         __u8   tq;
 224         __be16 tvlv_len;
 225         /* __packed is not needed as the struct size is divisible by 4,
 226          * and the largest data type in this struct has a size of 4.
 227          */
 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: reseved 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         /* __packed is not needed as the struct size is divisible by 4,
 253          * and the largest data type in this struct has a size of 4.
 254          */
 255 };
 256
 257 #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet)
 258
 259 /**
 260  * struct batadv_elp_packet - elp (neighbor discovery) packet
 261  * @packet_type: batman-adv packet type, part of the general header
 262  * @version: batman-adv protocol version, part of the genereal header
 263  * @orig: originator mac address
 264  * @seqno: sequence number
 265  * @elp_interval: currently used ELP sending interval in ms
 266  */
 267 struct batadv_elp_packet {
 268         __u8   packet_type;
 269         __u8   version;
 270         __u8   orig[ETH_ALEN];
 271         __be32 seqno;
 272         __be32 elp_interval;
 273 };
 274
 275 #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet)
 276
 277 /**
 278  * struct batadv_icmp_header - common members among all the ICMP packets
 279  * @packet_type: batman-adv packet type, part of the general header
 280  * @version: batman-adv protocol version, part of the genereal header
 281  * @ttl: time to live for this packet, part of the genereal header
 282  * @msg_type: ICMP packet type
 283  * @dst: address of the destination node
 284  * @orig: address of the source node
 285  * @uid: local ICMP socket identifier
 286  * @align: not used - useful for alignment purposes only
 287  *
 288  * This structure is used for ICMP packets parsing only and it is never sent
 289  * over the wire. The alignment field at the end is there to ensure that
 290  * members are padded the same way as they are in real packets.
 291  */
 292 struct batadv_icmp_header {
 293         __u8 packet_type;
 294         __u8 version;
 295         __u8 ttl;
 296         __u8 msg_type; /* see ICMP message types above */
 297         __u8 dst[ETH_ALEN];
 298         __u8 orig[ETH_ALEN];
 299         __u8 uid;
 300         __u8 align[3];
 301 };
 302
 303 /**
 304  * struct batadv_icmp_packet - ICMP packet
 305  * @packet_type: batman-adv packet type, part of the general header
 306  * @version: batman-adv protocol version, part of the genereal header
 307  * @ttl: time to live for this packet, part of the genereal header
 308  * @msg_type: ICMP packet type
 309  * @dst: address of the destination node
 310  * @orig: address of the source node
 311  * @uid: local ICMP socket identifier
 312  * @reserved: not used - useful for alignment
 313  * @seqno: ICMP sequence number
 314  */
 315 struct batadv_icmp_packet {
 316         __u8   packet_type;
 317         __u8   version;
 318         __u8   ttl;
 319         __u8   msg_type; /* see ICMP message types above */
 320         __u8   dst[ETH_ALEN];
 321         __u8   orig[ETH_ALEN];
 322         __u8   uid;
 323         __u8   reserved;
 324         __be16 seqno;
 325 };
 326
 327 /**
 328  * struct batadv_icmp_tp_packet - ICMP TP Meter packet
 329  * @packet_type: batman-adv packet type, part of the general header
 330  * @version: batman-adv protocol version, part of the genereal header
 331  * @ttl: time to live for this packet, part of the genereal header
 332  * @msg_type: ICMP packet type
 333  * @dst: address of the destination node
 334  * @orig: address of the source node
 335  * @uid: local ICMP socket identifier
 336  * @subtype: TP packet subtype (see batadv_icmp_tp_subtype)
 337  * @session: TP session identifier
 338  * @seqno: the TP sequence number
 339  * @timestamp: time when the packet has been sent. This value is filled in a
 340  *  TP_MSG and echoed back in the next TP_ACK so that the sender can compute the
 341  *  RTT. Since it is read only by the host which wrote it, there is no need to
 342  *  store it using network order
 343  */
 344 struct batadv_icmp_tp_packet {
 345         __u8   packet_type;
 346         __u8   version;
 347         __u8   ttl;
 348         __u8   msg_type; /* see ICMP message types above */
 349         __u8   dst[ETH_ALEN];
 350         __u8   orig[ETH_ALEN];
 351         __u8   uid;
 352         __u8   subtype;
 353         __u8   session[2];
 354         __be32 seqno;
 355         __be32 timestamp;
 356 };
 357
 358 /**
 359  * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes
 360  * @BATADV_TP_MSG: Msg from sender to receiver
 361  * @BATADV_TP_ACK: acknowledgment from receiver to sender
 362  */
 363 enum batadv_icmp_tp_subtype {
 364         BATADV_TP_MSG   = 0,
 365         BATADV_TP_ACK,
 366 };
 367
 368 #define BATADV_RR_LEN 16
 369
 370 /**
 371  * struct batadv_icmp_packet_rr - ICMP RouteRecord packet
 372  * @packet_type: batman-adv packet type, part of the general header
 373  * @version: batman-adv protocol version, part of the genereal header
 374  * @ttl: time to live for this packet, part of the genereal header
 375  * @msg_type: ICMP packet type
 376  * @dst: address of the destination node
 377  * @orig: address of the source node
 378  * @uid: local ICMP socket identifier
 379  * @rr_cur: number of entries the rr array
 380  * @seqno: ICMP sequence number
 381  * @rr: route record array
 382  */
 383 struct batadv_icmp_packet_rr {
 384         __u8   packet_type;
 385         __u8   version;
 386         __u8   ttl;
 387         __u8   msg_type; /* see ICMP message types above */
 388         __u8   dst[ETH_ALEN];
 389         __u8   orig[ETH_ALEN];
 390         __u8   uid;
 391         __u8   rr_cur;
 392         __be16 seqno;
 393         __u8   rr[BATADV_RR_LEN][ETH_ALEN];
 394 };
 395
 396 #define BATADV_ICMP_MAX_PACKET_SIZE     sizeof(struct batadv_icmp_packet_rr)
 397
 398 /* All packet headers in front of an ethernet header have to be completely
 399  * divisible by 2 but not by 4 to make the payload after the ethernet
 400  * header again 4 bytes boundary aligned.
 401  *
 402  * A packing of 2 is necessary to avoid extra padding at the end of the struct
 403  * caused by a structure member which is larger than two bytes. Otherwise
 404  * the structure would not fulfill the previously mentioned rule to avoid the
 405  * misalignment of the payload after the ethernet header. It may also lead to
 406  * leakage of information when the padding it not initialized before sending.
 407  */
 408 #pragma pack(2)
 409
 410 /**
 411  * struct batadv_unicast_packet - unicast packet for network payload
 412  * @packet_type: batman-adv packet type, part of the general header
 413  * @version: batman-adv protocol version, part of the genereal header
 414  * @ttl: time to live for this packet, part of the genereal header
 415  * @ttvn: translation table version number
 416  * @dest: originator destination of the unicast packet
 417  */
 418 struct batadv_unicast_packet {
 419         __u8 packet_type;
 420         __u8 version;
 421         __u8 ttl;
 422         __u8 ttvn; /* destination translation table version number */
 423         __u8 dest[ETH_ALEN];
 424         /* "4 bytes boundary + 2 bytes" long to make the payload after the
 425          * following ethernet header again 4 bytes boundary aligned
 426          */
 427 };
 428
 429 /**
 430  * struct batadv_unicast_4addr_packet - extended unicast packet
 431  * @u: common unicast packet header
 432  * @src: address of the source
 433  * @subtype: packet subtype
 434  * @reserved: reserved byte for alignment
 435  */
 436 struct batadv_unicast_4addr_packet {
 437         struct batadv_unicast_packet u;
 438         __u8 src[ETH_ALEN];
 439         __u8 subtype;
 440         __u8 reserved;
 441         /* "4 bytes boundary + 2 bytes" long to make the payload after the
 442          * following ethernet header again 4 bytes boundary aligned
 443          */
 444 };
 445
 446 /**
 447  * struct batadv_frag_packet - fragmented packet
 448  * @packet_type: batman-adv packet type, part of the general header
 449  * @version: batman-adv protocol version, part of the genereal header
 450  * @ttl: time to live for this packet, part of the genereal header
 451  * @dest: final destination used when routing fragments
 452  * @orig: originator of the fragment used when merging the packet
 453  * @no: fragment number within this sequence
 454  * @priority: priority of frame, from ToS IP precedence or 802.1p
 455  * @reserved: reserved byte for alignment
 456  * @seqno: sequence identification
 457  * @total_size: size of the merged packet
 458  */
 459 struct batadv_frag_packet {
 460         __u8   packet_type;
 461         __u8   version;  /* batman version field */
 462         __u8   ttl;
 463 #if defined(__BIG_ENDIAN_BITFIELD)
 464         __u8   no:4;
 465         __u8   priority:3;
 466         __u8   reserved:1;
 467 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 468         __u8   reserved:1;
 469         __u8   priority:3;
 470         __u8   no:4;
 471 #else
 472 #error "unknown bitfield endianness"
 473 #endif
 474         __u8   dest[ETH_ALEN];
 475         __u8   orig[ETH_ALEN];
 476         __be16 seqno;
 477         __be16 total_size;
 478 };
 479
 480 /**
 481  * struct batadv_bcast_packet - broadcast packet for network payload
 482  * @packet_type: batman-adv packet type, part of the general header
 483  * @version: batman-adv protocol version, part of the genereal header
 484  * @ttl: time to live for this packet, part of the genereal header
 485  * @reserved: reserved byte for alignment
 486  * @seqno: sequence identification
 487  * @orig: originator of the broadcast packet
 488  */
 489 struct batadv_bcast_packet {
 490         __u8   packet_type;
 491         __u8   version;  /* batman version field */
 492         __u8   ttl;
 493         __u8   reserved;
 494         __be32 seqno;
 495         __u8   orig[ETH_ALEN];
 496         /* "4 bytes boundary + 2 bytes" long to make the payload after the
 497          * following ethernet header again 4 bytes boundary aligned
 498          */
 499 };
 500
 501 /**
 502  * struct batadv_coded_packet - network coded packet
 503  * @packet_type: batman-adv packet type, part of the general header
 504  * @version: batman-adv protocol version, part of the genereal header
 505  * @ttl: time to live for this packet, part of the genereal header
 506  * @first_source: original source of first included packet
 507  * @first_orig_dest: original destinal of first included packet
 508  * @first_crc: checksum of first included packet
 509  * @first_ttvn: tt-version number of first included packet
 510  * @second_ttl: ttl of second packet
 511  * @second_dest: second receiver of this coded packet
 512  * @second_source: original source of second included packet
 513  * @second_orig_dest: original destination of second included packet
 514  * @second_crc: checksum of second included packet
 515  * @second_ttvn: tt version number of second included packet
 516  * @coded_len: length of network coded part of the payload
 517  */
 518 struct batadv_coded_packet {
 519         __u8   packet_type;
 520         __u8   version;  /* batman version field */
 521         __u8   ttl;
 522         __u8   first_ttvn;
 523         /* __u8 first_dest[ETH_ALEN]; - saved in mac header destination */
 524         __u8   first_source[ETH_ALEN];
 525         __u8   first_orig_dest[ETH_ALEN];
 526         __be32 first_crc;
 527         __u8   second_ttl;
 528         __u8   second_ttvn;
 529         __u8   second_dest[ETH_ALEN];
 530         __u8   second_source[ETH_ALEN];
 531         __u8   second_orig_dest[ETH_ALEN];
 532         __be32 second_crc;
 533         __be16 coded_len;
 534 };
 535
 536 #pragma pack()
 537
 538 /**
 539  * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload
 540  * @packet_type: batman-adv packet type, part of the general header
 541  * @version: batman-adv protocol version, part of the genereal header
 542  * @ttl: time to live for this packet, part of the genereal header
 543  * @reserved: reserved field (for packet alignment)
 544  * @src: address of the source
 545  * @dst: address of the destination
 546  * @tvlv_len: length of tvlv data following the unicast tvlv header
 547  * @align: 2 bytes to align the header to a 4 byte boundary
 548  */
 549 struct batadv_unicast_tvlv_packet {
 550         __u8   packet_type;
 551         __u8   version;  /* batman version field */
 552         __u8   ttl;
 553         __u8   reserved;
 554         __u8   dst[ETH_ALEN];
 555         __u8   src[ETH_ALEN];
 556         __be16 tvlv_len;
 557         __u16  align;
 558 };
 559
 560 /**
 561  * struct batadv_tvlv_hdr - base tvlv header struct
 562  * @type: tvlv container type (see batadv_tvlv_type)
 563  * @version: tvlv container version
 564  * @len: tvlv container length
 565  */
 566 struct batadv_tvlv_hdr {
 567         __u8   type;
 568         __u8   version;
 569         __be16 len;
 570 };
 571
 572 /**
 573  * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv
 574  *  container
 575  * @bandwidth_down: advertised uplink download bandwidth
 576  * @bandwidth_up: advertised uplink upload bandwidth
 577  */
 578 struct batadv_tvlv_gateway_data {
 579         __be32 bandwidth_down;
 580         __be32 bandwidth_up;
 581 };
 582
 583 /**
 584  * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container
 585  * @flags: translation table flags (see batadv_tt_data_flags)
 586  * @ttvn: translation table version number
 587  * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by
 588  *  one batadv_tvlv_tt_vlan_data object per announced vlan
 589  */
 590 struct batadv_tvlv_tt_data {
 591         __u8   flags;
 592         __u8   ttvn;
 593         __be16 num_vlan;
 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_change - translation table diff data
 611  * @flags: status indicators concerning the non-mesh client (see
 612  *  batadv_tt_client_flags)
 613  * @reserved: reserved field - useful for alignment purposes only
 614  * @addr: mac address of non-mesh client that triggered this tt change
 615  * @vid: VLAN identifier
 616  */
 617 struct batadv_tvlv_tt_change {
 618         __u8   flags;
 619         __u8   reserved[3];
 620         __u8   addr[ETH_ALEN];
 621         __be16 vid;
 622 };
 623
 624 /**
 625  * struct batadv_tvlv_roam_adv - roaming advertisement
 626  * @client: mac address of roaming client
 627  * @vid: VLAN identifier
 628  */
 629 struct batadv_tvlv_roam_adv {
 630         __u8   client[ETH_ALEN];
 631         __be16 vid;
 632 };
 633
 634 /**
 635  * struct batadv_tvlv_mcast_data - payload of a multicast tvlv
 636  * @flags: multicast flags announced by the orig node
 637  * @reserved: reserved field
 638  */
 639 struct batadv_tvlv_mcast_data {
 640         __u8 flags;
 641         __u8 reserved[3];
 642 };
 643
 644 #endif /* _UAPI_LINUX_BATADV_PACKET_H_ */