include/uapi/linux/batadv_packet.h

   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  */
  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         __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  */
 208 struct 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  */
 234 struct 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  */
 255 struct 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  */
 280 struct 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  */
 303 struct 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  */
 332 struct 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  */
 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         __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  */
 405 struct 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  */
 423 struct 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  */
 446 struct 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  */
 476 struct 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  */
 505 struct 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  */
 534 struct 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  */
 551 struct 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  */
 563 struct 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  */
 575 struct 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  */
 588 struct 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  */
 602 struct 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  */
 614 struct 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  */
 624 struct batadv_tvlv_mcast_data {
 625         __u8 flags;
 626         __u8 reserved[3];
 627 };
 628
 629 #pragma pack()
 630
 631 #endif /* _UAPI_LINUX_BATADV_PACKET_H_ */