master
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 */
40enum 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 */
66enum 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 */
84enum 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 */
99enum 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 */
124enum 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 */
143enum 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 */
154enum 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 */
166enum 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 */
184enum 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 */
198struct 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 */
217struct 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 */
243struct 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 */
264struct 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 */
289struct 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 */
312struct 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 */
341struct 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 */
360enum 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 */
380struct 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 */
414struct 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 */
432struct 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 */
455struct 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 */
485struct 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 */
505struct 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 */
533struct 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 */
562struct 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 */
579struct 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 */
591struct 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 */
603struct 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 */
617struct 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 */
632struct 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 */
644struct 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 */
654struct 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 */
663struct batadv_tvlv_mcast_tracker {
664 __be16 num_dests;
665};
666
667#pragma pack()
668
669#endif /* _LINUX_BATADV_PACKET_H_ */