uapi/linux/batadv_packet.h

0001 /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */
0002 /* Copyright (C) B.A.T.M.A.N. contributors:
0003  *
0004  * Marek Lindner, Simon Wunderlich
0005  */
0006
0007 #ifndef _UAPI_LINUX_BATADV_PACKET_H_
0008 #define _UAPI_LINUX_BATADV_PACKET_H_
0009
0010 #include <asm/byteorder.h>
0011 #include <linux/if_ether.h>
0012 #include <linux/types.h>
0013
0014 /**
0015  * batadv_tp_is_error() - Check throughput meter return code for error
0016  * @n: throughput meter return code
0017  *
0018  * Return: 0 when not error was detected, != 0 otherwise
0019  */
0020 #define batadv_tp_is_error(n) ((__u8)(n) > 127 ? 1 : 0)
0021
0022 /**
0023  * enum batadv_packettype - types for batman-adv encapsulated packets
0024  * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV
0025  * @BATADV_BCAST: broadcast packets carrying broadcast payload
0026  * @BATADV_CODED: network coded packets
0027  * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V
0028  * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V
0029  *
0030  * @BATADV_UNICAST: unicast packets carrying unicast payload traffic
0031  * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original
0032  *     payload packet
0033  * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of
0034  *     the sender
0035  * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute
0036  * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers
0037  */
0038 enum batadv_packettype {
0039     /* 0x00 - 0x3f: local packets or special rules for handling */
0040     BATADV_IV_OGM           = 0x00,
0041     BATADV_BCAST            = 0x01,
0042     BATADV_CODED            = 0x02,
0043     BATADV_ELP      = 0x03,
0044     BATADV_OGM2     = 0x04,
0045     /* 0x40 - 0x7f: unicast */
0046 #define BATADV_UNICAST_MIN     0x40
0047     BATADV_UNICAST          = 0x40,
0048     BATADV_UNICAST_FRAG     = 0x41,
0049     BATADV_UNICAST_4ADDR    = 0x42,
0050     BATADV_ICMP             = 0x43,
0051     BATADV_UNICAST_TVLV     = 0x44,
0052 #define BATADV_UNICAST_MAX     0x7f
0053     /* 0x80 - 0xff: reserved */
0054 };
0055
0056 /**
0057  * enum batadv_subtype - packet subtype for unicast4addr
0058  * @BATADV_P_DATA: user payload
0059  * @BATADV_P_DAT_DHT_GET: DHT request message
0060  * @BATADV_P_DAT_DHT_PUT: DHT store message
0061  * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT
0062  */
0063 enum batadv_subtype {
0064     BATADV_P_DATA           = 0x01,
0065     BATADV_P_DAT_DHT_GET        = 0x02,
0066     BATADV_P_DAT_DHT_PUT        = 0x03,
0067     BATADV_P_DAT_CACHE_REPLY    = 0x04,
0068 };
0069
0070 /* this file is included by batctl which needs these defines */
0071 #define BATADV_COMPAT_VERSION 15
0072
0073 /**
0074  * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets
0075  * @BATADV_NOT_BEST_NEXT_HOP: flag is set when the ogm packet is forwarded and
0076  *  was previously received from someone other than the best neighbor.
0077  * @BATADV_PRIMARIES_FIRST_HOP: flag unused.
0078  * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a
0079  *     one hop neighbor on the interface where it was originally received.
0080  */
0081 enum batadv_iv_flags {
0082     BATADV_NOT_BEST_NEXT_HOP   = 1UL << 0,
0083     BATADV_PRIMARIES_FIRST_HOP = 1UL << 1,
0084     BATADV_DIRECTLINK          = 1UL << 2,
0085 };
0086
0087 /**
0088  * enum batadv_icmp_packettype - ICMP message types
0089  * @BATADV_ECHO_REPLY: success reply to BATADV_ECHO_REQUEST
0090  * @BATADV_DESTINATION_UNREACHABLE: failure when route to destination not found
0091  * @BATADV_ECHO_REQUEST: request BATADV_ECHO_REPLY from destination
0092  * @BATADV_TTL_EXCEEDED: error after BATADV_ECHO_REQUEST traversed too many hops
0093  * @BATADV_PARAMETER_PROBLEM: return code for malformed messages
0094  * @BATADV_TP: throughput meter packet
0095  */
0096 enum batadv_icmp_packettype {
0097     BATADV_ECHO_REPLY          = 0,
0098     BATADV_DESTINATION_UNREACHABLE = 3,
0099     BATADV_ECHO_REQUEST        = 8,
0100     BATADV_TTL_EXCEEDED        = 11,
0101     BATADV_PARAMETER_PROBLEM       = 12,
0102     BATADV_TP              = 15,
0103 };
0104
0105 /**
0106  * enum batadv_mcast_flags - flags for multicast capabilities and settings
0107  * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for
0108  *  224.0.0.0/24 or ff02::1
0109  * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets
0110  *  (both link-local and routable ones)
0111  * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
0112  *  (both link-local and routable ones)
0113  * @BATADV_MCAST_WANT_NO_RTR4: we have no IPv4 multicast router and therefore
0114  * only need routable IPv4 multicast packets we signed up for explicitly
0115  * @BATADV_MCAST_WANT_NO_RTR6: we have no IPv6 multicast router and therefore
0116  * only need routable IPv6 multicast packets we signed up for explicitly
0117  */
0118 enum batadv_mcast_flags {
0119     BATADV_MCAST_WANT_ALL_UNSNOOPABLES  = 1UL << 0,
0120     BATADV_MCAST_WANT_ALL_IPV4      = 1UL << 1,
0121     BATADV_MCAST_WANT_ALL_IPV6      = 1UL << 2,
0122     BATADV_MCAST_WANT_NO_RTR4       = 1UL << 3,
0123     BATADV_MCAST_WANT_NO_RTR6       = 1UL << 4,
0124 };
0125
0126 /* tt data subtypes */
0127 #define BATADV_TT_DATA_TYPE_MASK 0x0F
0128
0129 /**
0130  * enum batadv_tt_data_flags - flags for tt data tvlv
0131  * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM
0132  * @BATADV_TT_REQUEST: TT request message
0133  * @BATADV_TT_RESPONSE: TT response message
0134  * @BATADV_TT_FULL_TABLE: contains full table to replace existing table
0135  */
0136 enum batadv_tt_data_flags {
0137     BATADV_TT_OGM_DIFF   = 1UL << 0,
0138     BATADV_TT_REQUEST    = 1UL << 1,
0139     BATADV_TT_RESPONSE   = 1UL << 2,
0140     BATADV_TT_FULL_TABLE = 1UL << 4,
0141 };
0142
0143 /**
0144  * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field
0145  * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
0146  */
0147 enum batadv_vlan_flags {
0148     BATADV_VLAN_HAS_TAG = 1UL << 15,
0149 };
0150
0151 /**
0152  * enum batadv_bla_claimframe - claim frame types for the bridge loop avoidance
0153  * @BATADV_CLAIM_TYPE_CLAIM: claim of a client mac address
0154  * @BATADV_CLAIM_TYPE_UNCLAIM: unclaim of a client mac address
0155  * @BATADV_CLAIM_TYPE_ANNOUNCE: announcement of backbone with current crc
0156  * @BATADV_CLAIM_TYPE_REQUEST: request of full claim table
0157  * @BATADV_CLAIM_TYPE_LOOPDETECT: mesh-traversing loop detect packet
0158  */
0159 enum batadv_bla_claimframe {
0160     BATADV_CLAIM_TYPE_CLAIM     = 0x00,
0161     BATADV_CLAIM_TYPE_UNCLAIM   = 0x01,
0162     BATADV_CLAIM_TYPE_ANNOUNCE  = 0x02,
0163     BATADV_CLAIM_TYPE_REQUEST   = 0x03,
0164     BATADV_CLAIM_TYPE_LOOPDETECT    = 0x04,
0165 };
0166
0167 /**
0168  * enum batadv_tvlv_type - tvlv type definitions
0169  * @BATADV_TVLV_GW: gateway tvlv
0170  * @BATADV_TVLV_DAT: distributed arp table tvlv
0171  * @BATADV_TVLV_NC: network coding tvlv
0172  * @BATADV_TVLV_TT: translation table tvlv
0173  * @BATADV_TVLV_ROAM: roaming advertisement tvlv
0174  * @BATADV_TVLV_MCAST: multicast capability tvlv
0175  */
0176 enum batadv_tvlv_type {
0177     BATADV_TVLV_GW      = 0x01,
0178     BATADV_TVLV_DAT     = 0x02,
0179     BATADV_TVLV_NC      = 0x03,
0180     BATADV_TVLV_TT      = 0x04,
0181     BATADV_TVLV_ROAM    = 0x05,
0182     BATADV_TVLV_MCAST   = 0x06,
0183 };
0184
0185 #pragma pack(2)
0186 /* the destination hardware field in the ARP frame is used to
0187  * transport the claim type and the group id
0188  */
0189 struct batadv_bla_claim_dst {
0190     __u8   magic[3];    /* FF:43:05 */
0191     __u8   type;        /* bla_claimframe */
0192     __be16 group;       /* group id */
0193 };
0194
0195 /**
0196  * struct batadv_ogm_packet - ogm (routing protocol) packet
0197  * @packet_type: batman-adv packet type, part of the general header
0198  * @version: batman-adv protocol version, part of the general header
0199  * @ttl: time to live for this packet, part of the general header
0200  * @flags: contains routing relevant flags - see enum batadv_iv_flags
0201  * @seqno: sequence identification
0202  * @orig: address of the source node
0203  * @prev_sender: address of the previous sender
0204  * @reserved: reserved byte for alignment
0205  * @tq: transmission quality
0206  * @tvlv_len: length of tvlv data following the ogm header
0207  */
0208 struct batadv_ogm_packet {
0209     __u8   packet_type;
0210     __u8   version;
0211     __u8   ttl;
0212     __u8   flags;
0213     __be32 seqno;
0214     __u8   orig[ETH_ALEN];
0215     __u8   prev_sender[ETH_ALEN];
0216     __u8   reserved;
0217     __u8   tq;
0218     __be16 tvlv_len;
0219 };
0220
0221 #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet)
0222
0223 /**
0224  * struct batadv_ogm2_packet - ogm2 (routing protocol) packet
0225  * @packet_type: batman-adv packet type, part of the general header
0226  * @version: batman-adv protocol version, part of the general header
0227  * @ttl: time to live for this packet, part of the general header
0228  * @flags: reserved for routing relevant flags - currently always 0
0229  * @seqno: sequence number
0230  * @orig: originator mac address
0231  * @tvlv_len: length of the appended tvlv buffer (in bytes)
0232  * @throughput: the currently flooded path throughput
0233  */
0234 struct batadv_ogm2_packet {
0235     __u8   packet_type;
0236     __u8   version;
0237     __u8   ttl;
0238     __u8   flags;
0239     __be32 seqno;
0240     __u8   orig[ETH_ALEN];
0241     __be16 tvlv_len;
0242     __be32 throughput;
0243 };
0244
0245 #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet)
0246
0247 /**
0248  * struct batadv_elp_packet - elp (neighbor discovery) packet
0249  * @packet_type: batman-adv packet type, part of the general header
0250  * @version: batman-adv protocol version, part of the general header
0251  * @orig: originator mac address
0252  * @seqno: sequence number
0253  * @elp_interval: currently used ELP sending interval in ms
0254  */
0255 struct batadv_elp_packet {
0256     __u8   packet_type;
0257     __u8   version;
0258     __u8   orig[ETH_ALEN];
0259     __be32 seqno;
0260     __be32 elp_interval;
0261 };
0262
0263 #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet)
0264
0265 /**
0266  * struct batadv_icmp_header - common members among all the ICMP packets
0267  * @packet_type: batman-adv packet type, part of the general header
0268  * @version: batman-adv protocol version, part of the general header
0269  * @ttl: time to live for this packet, part of the general header
0270  * @msg_type: ICMP packet type
0271  * @dst: address of the destination node
0272  * @orig: address of the source node
0273  * @uid: local ICMP socket identifier
0274  * @align: not used - useful for alignment purposes only
0275  *
0276  * This structure is used for ICMP packet parsing only and it is never sent
0277  * over the wire. The alignment field at the end is there to ensure that
0278  * members are padded the same way as they are in real packets.
0279  */
0280 struct batadv_icmp_header {
0281     __u8 packet_type;
0282     __u8 version;
0283     __u8 ttl;
0284     __u8 msg_type; /* see ICMP message types above */
0285     __u8 dst[ETH_ALEN];
0286     __u8 orig[ETH_ALEN];
0287     __u8 uid;
0288     __u8 align[3];
0289 };
0290
0291 /**
0292  * struct batadv_icmp_packet - ICMP packet
0293  * @packet_type: batman-adv packet type, part of the general header
0294  * @version: batman-adv protocol version, part of the general header
0295  * @ttl: time to live for this packet, part of the general header
0296  * @msg_type: ICMP packet type
0297  * @dst: address of the destination node
0298  * @orig: address of the source node
0299  * @uid: local ICMP socket identifier
0300  * @reserved: not used - useful for alignment
0301  * @seqno: ICMP sequence number
0302  */
0303 struct batadv_icmp_packet {
0304     __u8   packet_type;
0305     __u8   version;
0306     __u8   ttl;
0307     __u8   msg_type; /* see ICMP message types above */
0308     __u8   dst[ETH_ALEN];
0309     __u8   orig[ETH_ALEN];
0310     __u8   uid;
0311     __u8   reserved;
0312     __be16 seqno;
0313 };
0314
0315 /**
0316  * struct batadv_icmp_tp_packet - ICMP TP Meter packet
0317  * @packet_type: batman-adv packet type, part of the general header
0318  * @version: batman-adv protocol version, part of the general header
0319  * @ttl: time to live for this packet, part of the general header
0320  * @msg_type: ICMP packet type
0321  * @dst: address of the destination node
0322  * @orig: address of the source node
0323  * @uid: local ICMP socket identifier
0324  * @subtype: TP packet subtype (see batadv_icmp_tp_subtype)
0325  * @session: TP session identifier
0326  * @seqno: the TP sequence number
0327  * @timestamp: time when the packet has been sent. This value is filled in a
0328  *  TP_MSG and echoed back in the next TP_ACK so that the sender can compute the
0329  *  RTT. Since it is read only by the host which wrote it, there is no need to
0330  *  store it using network order
0331  */
0332 struct batadv_icmp_tp_packet {
0333     __u8   packet_type;
0334     __u8   version;
0335     __u8   ttl;
0336     __u8   msg_type; /* see ICMP message types above */
0337     __u8   dst[ETH_ALEN];
0338     __u8   orig[ETH_ALEN];
0339     __u8   uid;
0340     __u8   subtype;
0341     __u8   session[2];
0342     __be32 seqno;
0343     __be32 timestamp;
0344 };
0345
0346 /**
0347  * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes
0348  * @BATADV_TP_MSG: Msg from sender to receiver
0349  * @BATADV_TP_ACK: acknowledgment from receiver to sender
0350  */
0351 enum batadv_icmp_tp_subtype {
0352     BATADV_TP_MSG   = 0,
0353     BATADV_TP_ACK,
0354 };
0355
0356 #define BATADV_RR_LEN 16
0357
0358 /**
0359  * struct batadv_icmp_packet_rr - ICMP RouteRecord packet
0360  * @packet_type: batman-adv packet type, part of the general header
0361  * @version: batman-adv protocol version, part of the general header
0362  * @ttl: time to live for this packet, part of the general header
0363  * @msg_type: ICMP packet type
0364  * @dst: address of the destination node
0365  * @orig: address of the source node
0366  * @uid: local ICMP socket identifier
0367  * @rr_cur: number of entries the rr array
0368  * @seqno: ICMP sequence number
0369  * @rr: route record array
0370  */
0371 struct batadv_icmp_packet_rr {
0372     __u8   packet_type;
0373     __u8   version;
0374     __u8   ttl;
0375     __u8   msg_type; /* see ICMP message types above */
0376     __u8   dst[ETH_ALEN];
0377     __u8   orig[ETH_ALEN];
0378     __u8   uid;
0379     __u8   rr_cur;
0380     __be16 seqno;
0381     __u8   rr[BATADV_RR_LEN][ETH_ALEN];
0382 };
0383
0384 #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr)
0385
0386 /* All packet headers in front of an ethernet header have to be completely
0387  * divisible by 2 but not by 4 to make the payload after the ethernet
0388  * header again 4 bytes boundary aligned.
0389  *
0390  * A packing of 2 is necessary to avoid extra padding at the end of the struct
0391  * caused by a structure member which is larger than two bytes. Otherwise
0392  * the structure would not fulfill the previously mentioned rule to avoid the
0393  * misalignment of the payload after the ethernet header. It may also lead to
0394  * leakage of information when the padding it not initialized before sending.
0395  */
0396
0397 /**
0398  * struct batadv_unicast_packet - unicast packet for network payload
0399  * @packet_type: batman-adv packet type, part of the general header
0400  * @version: batman-adv protocol version, part of the general header
0401  * @ttl: time to live for this packet, part of the general header
0402  * @ttvn: translation table version number
0403  * @dest: originator destination of the unicast packet
0404  */
0405 struct batadv_unicast_packet {
0406     __u8 packet_type;
0407     __u8 version;
0408     __u8 ttl;
0409     __u8 ttvn; /* destination translation table version number */
0410     __u8 dest[ETH_ALEN];
0411     /* "4 bytes boundary + 2 bytes" long to make the payload after the
0412      * following ethernet header again 4 bytes boundary aligned
0413      */
0414 };
0415
0416 /**
0417  * struct batadv_unicast_4addr_packet - extended unicast packet
0418  * @u: common unicast packet header
0419  * @src: address of the source
0420  * @subtype: packet subtype
0421  * @reserved: reserved byte for alignment
0422  */
0423 struct batadv_unicast_4addr_packet {
0424     struct batadv_unicast_packet u;
0425     __u8 src[ETH_ALEN];
0426     __u8 subtype;
0427     __u8 reserved;
0428     /* "4 bytes boundary + 2 bytes" long to make the payload after the
0429      * following ethernet header again 4 bytes boundary aligned
0430      */
0431 };
0432
0433 /**
0434  * struct batadv_frag_packet - fragmented packet
0435  * @packet_type: batman-adv packet type, part of the general header
0436  * @version: batman-adv protocol version, part of the general header
0437  * @ttl: time to live for this packet, part of the general header
0438  * @dest: final destination used when routing fragments
0439  * @orig: originator of the fragment used when merging the packet
0440  * @no: fragment number within this sequence
0441  * @priority: priority of frame, from ToS IP precedence or 802.1p
0442  * @reserved: reserved byte for alignment
0443  * @seqno: sequence identification
0444  * @total_size: size of the merged packet
0445  */
0446 struct batadv_frag_packet {
0447     __u8   packet_type;
0448     __u8   version;  /* batman version field */
0449     __u8   ttl;
0450 #if defined(__BIG_ENDIAN_BITFIELD)
0451     __u8   no:4;
0452     __u8   priority:3;
0453     __u8   reserved:1;
0454 #elif defined(__LITTLE_ENDIAN_BITFIELD)
0455     __u8   reserved:1;
0456     __u8   priority:3;
0457     __u8   no:4;
0458 #else
0459 #error "unknown bitfield endianness"
0460 #endif
0461     __u8   dest[ETH_ALEN];
0462     __u8   orig[ETH_ALEN];
0463     __be16 seqno;
0464     __be16 total_size;
0465 };
0466
0467 /**
0468  * struct batadv_bcast_packet - broadcast packet for network payload
0469  * @packet_type: batman-adv packet type, part of the general header
0470  * @version: batman-adv protocol version, part of the general header
0471  * @ttl: time to live for this packet, part of the general header
0472  * @reserved: reserved byte for alignment
0473  * @seqno: sequence identification
0474  * @orig: originator of the broadcast packet
0475  */
0476 struct batadv_bcast_packet {
0477     __u8   packet_type;
0478     __u8   version;  /* batman version field */
0479     __u8   ttl;
0480     __u8   reserved;
0481     __be32 seqno;
0482     __u8   orig[ETH_ALEN];
0483     /* "4 bytes boundary + 2 bytes" long to make the payload after the
0484      * following ethernet header again 4 bytes boundary aligned
0485      */
0486 };
0487
0488 /**
0489  * struct batadv_coded_packet - network coded packet
0490  * @packet_type: batman-adv packet type, part of the general header
0491  * @version: batman-adv protocol version, part of the general header
0492  * @ttl: time to live for this packet, part of the general header
0493  * @first_source: original source of first included packet
0494  * @first_orig_dest: original destination of first included packet
0495  * @first_crc: checksum of first included packet
0496  * @first_ttvn: tt-version number of first included packet
0497  * @second_ttl: ttl of second packet
0498  * @second_dest: second receiver of this coded packet
0499  * @second_source: original source of second included packet
0500  * @second_orig_dest: original destination of second included packet
0501  * @second_crc: checksum of second included packet
0502  * @second_ttvn: tt version number of second included packet
0503  * @coded_len: length of network coded part of the payload
0504  */
0505 struct batadv_coded_packet {
0506     __u8   packet_type;
0507     __u8   version;  /* batman version field */
0508     __u8   ttl;
0509     __u8   first_ttvn;
0510     /* __u8 first_dest[ETH_ALEN]; - saved in mac header destination */
0511     __u8   first_source[ETH_ALEN];
0512     __u8   first_orig_dest[ETH_ALEN];
0513     __be32 first_crc;
0514     __u8   second_ttl;
0515     __u8   second_ttvn;
0516     __u8   second_dest[ETH_ALEN];
0517     __u8   second_source[ETH_ALEN];
0518     __u8   second_orig_dest[ETH_ALEN];
0519     __be32 second_crc;
0520     __be16 coded_len;
0521 };
0522
0523 /**
0524  * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload
0525  * @packet_type: batman-adv packet type, part of the general header
0526  * @version: batman-adv protocol version, part of the general header
0527  * @ttl: time to live for this packet, part of the general header
0528  * @reserved: reserved field (for packet alignment)
0529  * @src: address of the source
0530  * @dst: address of the destination
0531  * @tvlv_len: length of tvlv data following the unicast tvlv header
0532  * @align: 2 bytes to align the header to a 4 byte boundary
0533  */
0534 struct batadv_unicast_tvlv_packet {
0535     __u8   packet_type;
0536     __u8   version;  /* batman version field */
0537     __u8   ttl;
0538     __u8   reserved;
0539     __u8   dst[ETH_ALEN];
0540     __u8   src[ETH_ALEN];
0541     __be16 tvlv_len;
0542     __u16  align;
0543 };
0544
0545 /**
0546  * struct batadv_tvlv_hdr - base tvlv header struct
0547  * @type: tvlv container type (see batadv_tvlv_type)
0548  * @version: tvlv container version
0549  * @len: tvlv container length
0550  */
0551 struct batadv_tvlv_hdr {
0552     __u8   type;
0553     __u8   version;
0554     __be16 len;
0555 };
0556
0557 /**
0558  * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv
0559  *  container
0560  * @bandwidth_down: advertised uplink download bandwidth
0561  * @bandwidth_up: advertised uplink upload bandwidth
0562  */
0563 struct batadv_tvlv_gateway_data {
0564     __be32 bandwidth_down;
0565     __be32 bandwidth_up;
0566 };
0567
0568 /**
0569  * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container
0570  * @flags: translation table flags (see batadv_tt_data_flags)
0571  * @ttvn: translation table version number
0572  * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by
0573  *  one batadv_tvlv_tt_vlan_data object per announced vlan
0574  */
0575 struct batadv_tvlv_tt_data {
0576     __u8   flags;
0577     __u8   ttvn;
0578     __be16 num_vlan;
0579 };
0580
0581 /**
0582  * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through
0583  *  the tt tvlv container
0584  * @crc: crc32 checksum of the entries belonging to this vlan
0585  * @vid: vlan identifier
0586  * @reserved: unused, useful for alignment purposes
0587  */
0588 struct batadv_tvlv_tt_vlan_data {
0589     __be32 crc;
0590     __be16 vid;
0591     __u16  reserved;
0592 };
0593
0594 /**
0595  * struct batadv_tvlv_tt_change - translation table diff data
0596  * @flags: status indicators concerning the non-mesh client (see
0597  *  batadv_tt_client_flags)
0598  * @reserved: reserved field - useful for alignment purposes only
0599  * @addr: mac address of non-mesh client that triggered this tt change
0600  * @vid: VLAN identifier
0601  */
0602 struct batadv_tvlv_tt_change {
0603     __u8   flags;
0604     __u8   reserved[3];
0605     __u8   addr[ETH_ALEN];
0606     __be16 vid;
0607 };
0608
0609 /**
0610  * struct batadv_tvlv_roam_adv - roaming advertisement
0611  * @client: mac address of roaming client
0612  * @vid: VLAN identifier
0613  */
0614 struct batadv_tvlv_roam_adv {
0615     __u8   client[ETH_ALEN];
0616     __be16 vid;
0617 };
0618
0619 /**
0620  * struct batadv_tvlv_mcast_data - payload of a multicast tvlv
0621  * @flags: multicast flags announced by the orig node
0622  * @reserved: reserved field
0623  */
0624 struct batadv_tvlv_mcast_data {
0625     __u8 flags;
0626     __u8 reserved[3];
0627 };
0628
0629 #pragma pack()
0630
0631 #endif /* _UAPI_LINUX_BATADV_PACKET_H_ */