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Simon Wunderliche19f9752014-01-04 18:04:25 +01001/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00002 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
Antonio Quartulliebf38fb2013-11-03 20:40:48 +010015 * along with this program; if not, see <http://www.gnu.org/licenses/>.
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000016 */
17
18#ifndef _NET_BATMAN_ADV_PACKET_H_
19#define _NET_BATMAN_ADV_PACKET_H_
20
Marek Lindneref261572013-04-23 21:39:57 +080021/**
22 * enum batadv_packettype - types for batman-adv encapsulated packets
Simon Wunderlicha1f1ac52013-04-25 10:37:23 +020023 * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV
24 * @BATADV_BCAST: broadcast packets carrying broadcast payload
25 * @BATADV_CODED: network coded packets
26 *
27 * @BATADV_UNICAST: unicast packets carrying unicast payload traffic
28 * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original
29 * payload packet
30 * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of
31 * the sender
32 * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute
Marek Lindneref261572013-04-23 21:39:57 +080033 * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers
34 */
Sven Eckelmannacd34af2012-06-03 22:19:21 +020035enum batadv_packettype {
Simon Wunderlicha1f1ac52013-04-25 10:37:23 +020036 /* 0x00 - 0x3f: local packets or special rules for handling */
37 BATADV_IV_OGM = 0x00,
38 BATADV_BCAST = 0x01,
39 BATADV_CODED = 0x02,
40 /* 0x40 - 0x7f: unicast */
41#define BATADV_UNICAST_MIN 0x40
42 BATADV_UNICAST = 0x40,
43 BATADV_UNICAST_FRAG = 0x41,
44 BATADV_UNICAST_4ADDR = 0x42,
45 BATADV_ICMP = 0x43,
46 BATADV_UNICAST_TVLV = 0x44,
47#define BATADV_UNICAST_MAX 0x7f
48 /* 0x80 - 0xff: reserved */
Antonio Quartulli7cdcf6d2012-10-01 09:57:35 +020049};
50
51/**
52 * enum batadv_subtype - packet subtype for unicast4addr
53 * @BATADV_P_DATA: user payload
Antonio Quartulli5c3a0e52011-06-02 12:29:51 +020054 * @BATADV_P_DAT_DHT_GET: DHT request message
55 * @BATADV_P_DAT_DHT_PUT: DHT store message
56 * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT
Antonio Quartulli7cdcf6d2012-10-01 09:57:35 +020057 */
58enum batadv_subtype {
Antonio Quartulli5c3a0e52011-06-02 12:29:51 +020059 BATADV_P_DATA = 0x01,
60 BATADV_P_DAT_DHT_GET = 0x02,
61 BATADV_P_DAT_DHT_PUT = 0x03,
62 BATADV_P_DAT_CACHE_REPLY = 0x04,
Sven Eckelmanne8958db2011-06-04 11:26:00 +020063};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000064
65/* this file is included by batctl which needs these defines */
Antonio Quartulli60cf7982013-04-20 15:59:13 +020066#define BATADV_COMPAT_VERSION 15
Sven Eckelmanne8958db2011-06-04 11:26:00 +020067
Simon Wunderlich18c68d52013-04-25 10:37:25 +020068/**
69 * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets
70 * @BATADV_NOT_BEST_NEXT_HOP: flag is set when ogm packet is forwarded and was
71 * previously received from someone else than the best neighbor.
72 * @BATADV_PRIMARIES_FIRST_HOP: flag is set when the primary interface address
73 * is used, and the packet travels its first hop.
74 * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a
75 * one hop neighbor on the interface where it was originally received.
76 */
Sven Eckelmannacd34af2012-06-03 22:19:21 +020077enum batadv_iv_flags {
Simon Wunderlich18c68d52013-04-25 10:37:25 +020078 BATADV_NOT_BEST_NEXT_HOP = BIT(0),
79 BATADV_PRIMARIES_FIRST_HOP = BIT(1),
80 BATADV_DIRECTLINK = BIT(2),
Sven Eckelmanne8958db2011-06-04 11:26:00 +020081};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000082
83/* ICMP message types */
Sven Eckelmannacd34af2012-06-03 22:19:21 +020084enum batadv_icmp_packettype {
85 BATADV_ECHO_REPLY = 0,
86 BATADV_DESTINATION_UNREACHABLE = 3,
87 BATADV_ECHO_REQUEST = 8,
88 BATADV_TTL_EXCEEDED = 11,
89 BATADV_PARAMETER_PROBLEM = 12,
Sven Eckelmanne8958db2011-06-04 11:26:00 +020090};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000091
Marek Lindnere1bf0c12013-04-23 21:40:01 +080092/* tt data subtypes */
93#define BATADV_TT_DATA_TYPE_MASK 0x0F
Antonio Quartullia73105b2011-04-27 14:27:44 +020094
Marek Lindnere1bf0c12013-04-23 21:40:01 +080095/**
96 * enum batadv_tt_data_flags - flags for tt data tvlv
97 * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM
98 * @BATADV_TT_REQUEST: TT request message
99 * @BATADV_TT_RESPONSE: TT response message
100 * @BATADV_TT_FULL_TABLE: contains full table to replace existing table
101 */
102enum batadv_tt_data_flags {
103 BATADV_TT_OGM_DIFF = BIT(0),
104 BATADV_TT_REQUEST = BIT(1),
105 BATADV_TT_RESPONSE = BIT(2),
106 BATADV_TT_FULL_TABLE = BIT(4),
Antonio Quartullia73105b2011-04-27 14:27:44 +0200107};
108
Sven Eckelmannacd34af2012-06-03 22:19:21 +0200109/* BATADV_TT_CLIENT flags.
Sven Eckelmann8de47de2012-07-08 16:32:09 +0200110 * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to
Antonio Quartulli0eb015682013-10-13 02:50:20 +0200111 * BIT(15) are used for local computation only.
112 * Flags from BIT(4) to BIT(7) are kept in sync with the rest of the network.
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200113 */
Sven Eckelmannacd34af2012-06-03 22:19:21 +0200114enum batadv_tt_client_flags {
Sven Eckelmann8de47de2012-07-08 16:32:09 +0200115 BATADV_TT_CLIENT_DEL = BIT(0),
116 BATADV_TT_CLIENT_ROAM = BIT(1),
Antonio Quartulli0eb015682013-10-13 02:50:20 +0200117 BATADV_TT_CLIENT_WIFI = BIT(4),
Antonio Quartulli9464d072013-11-16 12:03:48 +0100118 BATADV_TT_CLIENT_ISOLA = BIT(5),
Sven Eckelmann8de47de2012-07-08 16:32:09 +0200119 BATADV_TT_CLIENT_NOPURGE = BIT(8),
120 BATADV_TT_CLIENT_NEW = BIT(9),
121 BATADV_TT_CLIENT_PENDING = BIT(10),
Antonio Quartulli0035f972013-04-24 16:37:52 +0200122 BATADV_TT_CLIENT_TEMP = BIT(11),
Antonio Quartullia73105b2011-04-27 14:27:44 +0200123};
124
Antonio Quartullic018ad32013-06-04 12:11:39 +0200125/**
126 * batadv_vlan_flags - flags for the four MSB of any vlan ID field
127 * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
128 */
129enum batadv_vlan_flags {
130 BATADV_VLAN_HAS_TAG = BIT(15),
131};
132
Simon Wunderlich23721382012-01-22 20:00:19 +0100133/* claim frame types for the bridge loop avoidance */
Sven Eckelmannacd34af2012-06-03 22:19:21 +0200134enum batadv_bla_claimframe {
Simon Wunderlich3eb87732012-06-23 12:34:18 +0200135 BATADV_CLAIM_TYPE_CLAIM = 0x00,
136 BATADV_CLAIM_TYPE_UNCLAIM = 0x01,
Sven Eckelmannacd34af2012-06-03 22:19:21 +0200137 BATADV_CLAIM_TYPE_ANNOUNCE = 0x02,
138 BATADV_CLAIM_TYPE_REQUEST = 0x03,
Simon Wunderlich23721382012-01-22 20:00:19 +0100139};
140
Marek Lindner414254e2013-04-23 21:39:58 +0800141/**
142 * enum batadv_tvlv_type - tvlv type definitions
143 * @BATADV_TVLV_GW: gateway tvlv
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800144 * @BATADV_TVLV_DAT: distributed arp table tvlv
Marek Lindner3f4841f2013-04-23 21:40:00 +0800145 * @BATADV_TVLV_NC: network coding tvlv
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800146 * @BATADV_TVLV_TT: translation table tvlv
Marek Lindner122edaa2013-04-23 21:40:03 +0800147 * @BATADV_TVLV_ROAM: roaming advertisement tvlv
Marek Lindner414254e2013-04-23 21:39:58 +0800148 */
149enum batadv_tvlv_type {
150 BATADV_TVLV_GW = 0x01,
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800151 BATADV_TVLV_DAT = 0x02,
Marek Lindner3f4841f2013-04-23 21:40:00 +0800152 BATADV_TVLV_NC = 0x03,
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800153 BATADV_TVLV_TT = 0x04,
Marek Lindner122edaa2013-04-23 21:40:03 +0800154 BATADV_TVLV_ROAM = 0x05,
Marek Lindner414254e2013-04-23 21:39:58 +0800155};
156
Simon Wunderlich2f7a3182013-12-02 20:38:33 +0100157#pragma pack(2)
Simon Wunderlich23721382012-01-22 20:00:19 +0100158/* the destination hardware field in the ARP frame is used to
159 * transport the claim type and the group id
160 */
Sven Eckelmann96412692012-06-05 22:31:30 +0200161struct batadv_bla_claim_dst {
Simon Wunderlich23721382012-01-22 20:00:19 +0100162 uint8_t magic[3]; /* FF:43:05 */
163 uint8_t type; /* bla_claimframe */
Al Viro3e2f1a12012-04-22 07:47:50 +0100164 __be16 group; /* group id */
Sven Eckelmannf6c57a42012-11-05 21:25:26 +0100165};
Simon Wunderlich2f7a3182013-12-02 20:38:33 +0100166#pragma pack()
Simon Wunderlich23721382012-01-22 20:00:19 +0100167
Marek Lindneref261572013-04-23 21:39:57 +0800168/**
169 * struct batadv_ogm_packet - ogm (routing protocol) packet
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100170 * @packet_type: batman-adv packet type, part of the general header
171 * @version: batman-adv protocol version, part of the genereal header
172 * @ttl: time to live for this packet, part of the genereal header
Simon Wunderlich18c68d52013-04-25 10:37:25 +0200173 * @flags: contains routing relevant flags - see enum batadv_iv_flags
Marek Lindneref261572013-04-23 21:39:57 +0800174 * @tvlv_len: length of tvlv data following the ogm header
175 */
Sven Eckelmann96412692012-06-05 22:31:30 +0200176struct batadv_ogm_packet {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100177 uint8_t packet_type;
178 uint8_t version;
179 uint8_t ttl;
Simon Wunderlich18c68d52013-04-25 10:37:25 +0200180 uint8_t flags;
Al Viroe0f52112012-04-22 07:46:29 +0100181 __be32 seqno;
Antonio Quartullic1faead2012-01-30 20:59:17 +0100182 uint8_t orig[ETH_ALEN];
183 uint8_t prev_sender[ETH_ALEN];
Marek Lindner414254e2013-04-23 21:39:58 +0800184 uint8_t reserved;
Antonio Quartulli3b27ffb2011-05-28 14:51:06 +0200185 uint8_t tq;
Marek Lindneref261572013-04-23 21:39:57 +0800186 __be16 tvlv_len;
Simon Wunderlich9284a472013-04-25 10:37:24 +0200187 /* __packed is not needed as the struct size is divisible by 4,
188 * and the largest data type in this struct has a size of 4.
189 */
190};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000191
Sven Eckelmann96412692012-06-05 22:31:30 +0200192#define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000193
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200194/**
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100195 * batadv_icmp_header - common members among all the ICMP packets
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100196 * @packet_type: batman-adv packet type, part of the general header
197 * @version: batman-adv protocol version, part of the genereal header
198 * @ttl: time to live for this packet, part of the genereal header
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200199 * @msg_type: ICMP packet type
200 * @dst: address of the destination node
201 * @orig: address of the source node
202 * @uid: local ICMP socket identifier
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100203 * @align: not used - useful for alignment purposes only
204 *
205 * This structure is used for ICMP packets parsing only and it is never sent
206 * over the wire. The alignment field at the end is there to ensure that
207 * members are padded the same way as they are in real packets.
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200208 */
209struct batadv_icmp_header {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100210 uint8_t packet_type;
211 uint8_t version;
212 uint8_t ttl;
Antonio Quartulli3b27ffb2011-05-28 14:51:06 +0200213 uint8_t msg_type; /* see ICMP message types above */
Antonio Quartullic1faead2012-01-30 20:59:17 +0100214 uint8_t dst[ETH_ALEN];
215 uint8_t orig[ETH_ALEN];
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000216 uint8_t uid;
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100217 uint8_t align[3];
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200218};
219
220/**
221 * batadv_icmp_packet - ICMP packet
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100222 * @packet_type: batman-adv packet type, part of the general header
223 * @version: batman-adv protocol version, part of the genereal header
224 * @ttl: time to live for this packet, part of the genereal header
225 * @msg_type: ICMP packet type
226 * @dst: address of the destination node
227 * @orig: address of the source node
228 * @uid: local ICMP socket identifier
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200229 * @reserved: not used - useful for alignment
230 * @seqno: ICMP sequence number
231 */
232struct batadv_icmp_packet {
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100233 uint8_t packet_type;
234 uint8_t version;
235 uint8_t ttl;
236 uint8_t msg_type; /* see ICMP message types above */
237 uint8_t dst[ETH_ALEN];
238 uint8_t orig[ETH_ALEN];
239 uint8_t uid;
Antonio Quartulli3b27ffb2011-05-28 14:51:06 +0200240 uint8_t reserved;
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200241 __be16 seqno;
Sven Eckelmannf6c57a42012-11-05 21:25:26 +0100242};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000243
Sven Eckelmann7e071c72012-06-03 22:19:13 +0200244#define BATADV_RR_LEN 16
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000245
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200246/**
247 * batadv_icmp_packet_rr - ICMP RouteRecord packet
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100248 * @packet_type: batman-adv packet type, part of the general header
249 * @version: batman-adv protocol version, part of the genereal header
250 * @ttl: time to live for this packet, part of the genereal header
251 * @msg_type: ICMP packet type
252 * @dst: address of the destination node
253 * @orig: address of the source node
254 * @uid: local ICMP socket identifier
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200255 * @rr_cur: number of entries the rr array
256 * @seqno: ICMP sequence number
257 * @rr: route record array
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200258 */
Sven Eckelmann96412692012-06-05 22:31:30 +0200259struct batadv_icmp_packet_rr {
Antonio Quartulli27a417e2013-12-05 15:33:00 +0100260 uint8_t packet_type;
261 uint8_t version;
262 uint8_t ttl;
263 uint8_t msg_type; /* see ICMP message types above */
264 uint8_t dst[ETH_ALEN];
265 uint8_t orig[ETH_ALEN];
266 uint8_t uid;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000267 uint8_t rr_cur;
Antonio Quartulli0bf84c12013-05-18 14:56:57 +0200268 __be16 seqno;
Sven Eckelmann7e071c72012-06-03 22:19:13 +0200269 uint8_t rr[BATADV_RR_LEN][ETH_ALEN];
Sven Eckelmannf6c57a42012-11-05 21:25:26 +0100270};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000271
Simon Wunderlichda6b8c22013-10-22 22:50:09 +0200272#define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr)
273
Sven Eckelmanne022b952012-11-05 21:25:27 +0100274/* All packet headers in front of an ethernet header have to be completely
275 * divisible by 2 but not by 4 to make the payload after the ethernet
276 * header again 4 bytes boundary aligned.
277 *
278 * A packing of 2 is necessary to avoid extra padding at the end of the struct
279 * caused by a structure member which is larger than two bytes. Otherwise
280 * the structure would not fulfill the previously mentioned rule to avoid the
281 * misalignment of the payload after the ethernet header. It may also lead to
282 * leakage of information when the padding it not initialized before sending.
283 */
284#pragma pack(2)
285
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100286/**
287 * struct batadv_unicast_packet - unicast packet for network payload
288 * @packet_type: batman-adv packet type, part of the general header
289 * @version: batman-adv protocol version, part of the genereal header
290 * @ttl: time to live for this packet, part of the genereal header
291 * @ttvn: translation table version number
292 * @dest: originator destination of the unicast packet
293 */
Sven Eckelmann96412692012-06-05 22:31:30 +0200294struct batadv_unicast_packet {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100295 uint8_t packet_type;
296 uint8_t version;
297 uint8_t ttl;
Antonio Quartullia73105b2011-04-27 14:27:44 +0200298 uint8_t ttvn; /* destination translation table version number */
Antonio Quartullic1faead2012-01-30 20:59:17 +0100299 uint8_t dest[ETH_ALEN];
Sven Eckelmannf6c57a42012-11-05 21:25:26 +0100300 /* "4 bytes boundary + 2 bytes" long to make the payload after the
301 * following ethernet header again 4 bytes boundary aligned
302 */
303};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000304
Antonio Quartulli7cdcf6d2012-10-01 09:57:35 +0200305/**
306 * struct batadv_unicast_4addr_packet - extended unicast packet
307 * @u: common unicast packet header
308 * @src: address of the source
309 * @subtype: packet subtype
310 */
311struct batadv_unicast_4addr_packet {
312 struct batadv_unicast_packet u;
313 uint8_t src[ETH_ALEN];
314 uint8_t subtype;
315 uint8_t reserved;
316 /* "4 bytes boundary + 2 bytes" long to make the payload after the
317 * following ethernet header again 4 bytes boundary aligned
318 */
319};
320
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200321/**
322 * struct batadv_frag_packet - fragmented packet
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100323 * @packet_type: batman-adv packet type, part of the general header
324 * @version: batman-adv protocol version, part of the genereal header
325 * @ttl: time to live for this packet, part of the genereal header
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200326 * @dest: final destination used when routing fragments
327 * @orig: originator of the fragment used when merging the packet
328 * @no: fragment number within this sequence
329 * @reserved: reserved byte for alignment
330 * @seqno: sequence identification
331 * @total_size: size of the merged packet
332 */
333struct batadv_frag_packet {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100334 uint8_t packet_type;
335 uint8_t version; /* batman version field */
336 uint8_t ttl;
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200337#if defined(__BIG_ENDIAN_BITFIELD)
338 uint8_t no:4;
339 uint8_t reserved:4;
340#elif defined(__LITTLE_ENDIAN_BITFIELD)
341 uint8_t reserved:4;
342 uint8_t no:4;
343#else
344#error "unknown bitfield endianess"
345#endif
346 uint8_t dest[ETH_ALEN];
347 uint8_t orig[ETH_ALEN];
348 __be16 seqno;
349 __be16 total_size;
350};
351
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100352/**
353 * struct batadv_bcast_packet - broadcast packet for network payload
354 * @packet_type: batman-adv packet type, part of the general header
355 * @version: batman-adv protocol version, part of the genereal header
356 * @ttl: time to live for this packet, part of the genereal header
357 * @reserved: reserved byte for alignment
358 * @seqno: sequence identification
359 * @orig: originator of the broadcast packet
360 */
Sven Eckelmann96412692012-06-05 22:31:30 +0200361struct batadv_bcast_packet {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100362 uint8_t packet_type;
363 uint8_t version; /* batman version field */
364 uint8_t ttl;
Antonio Quartulli3b27ffb2011-05-28 14:51:06 +0200365 uint8_t reserved;
Al Viro3e2f1a12012-04-22 07:47:50 +0100366 __be32 seqno;
Antonio Quartullic1faead2012-01-30 20:59:17 +0100367 uint8_t orig[ETH_ALEN];
Sven Eckelmannf6c57a42012-11-05 21:25:26 +0100368 /* "4 bytes boundary + 2 bytes" long to make the payload after the
369 * following ethernet header again 4 bytes boundary aligned
370 */
Sven Eckelmanne022b952012-11-05 21:25:27 +0100371};
372
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100373/**
374 * struct batadv_coded_packet - network coded packet
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100375 * @packet_type: batman-adv packet type, part of the general header
376 * @version: batman-adv protocol version, part of the genereal header
377 * @ttl: time to live for this packet, part of the genereal header
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100378 * @reserved: Align following fields to 2-byte boundaries
379 * @first_source: original source of first included packet
380 * @first_orig_dest: original destinal of first included packet
381 * @first_crc: checksum of first included packet
382 * @first_ttvn: tt-version number of first included packet
383 * @second_ttl: ttl of second packet
384 * @second_dest: second receiver of this coded packet
385 * @second_source: original source of second included packet
386 * @second_orig_dest: original destination of second included packet
387 * @second_crc: checksum of second included packet
388 * @second_ttvn: tt version number of second included packet
389 * @coded_len: length of network coded part of the payload
390 */
391struct batadv_coded_packet {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100392 uint8_t packet_type;
393 uint8_t version; /* batman version field */
394 uint8_t ttl;
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100395 uint8_t first_ttvn;
396 /* uint8_t first_dest[ETH_ALEN]; - saved in mac header destination */
397 uint8_t first_source[ETH_ALEN];
398 uint8_t first_orig_dest[ETH_ALEN];
399 __be32 first_crc;
400 uint8_t second_ttl;
401 uint8_t second_ttvn;
402 uint8_t second_dest[ETH_ALEN];
403 uint8_t second_source[ETH_ALEN];
404 uint8_t second_orig_dest[ETH_ALEN];
405 __be32 second_crc;
Martin Hundebølle6a0b492013-03-14 21:30:21 +0100406 __be16 coded_len;
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100407};
408
Simon Wunderlich46b76e02013-12-02 20:38:30 +0100409#pragma pack()
410
Marek Lindneref261572013-04-23 21:39:57 +0800411/**
412 * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100413 * @packet_type: batman-adv packet type, part of the general header
414 * @version: batman-adv protocol version, part of the genereal header
415 * @ttl: time to live for this packet, part of the genereal header
Marek Lindneref261572013-04-23 21:39:57 +0800416 * @reserved: reserved field (for packet alignment)
417 * @src: address of the source
418 * @dst: address of the destination
419 * @tvlv_len: length of tvlv data following the unicast tvlv header
420 * @align: 2 bytes to align the header to a 4 byte boundry
421 */
422struct batadv_unicast_tvlv_packet {
Simon Wunderlicha40d9b02013-12-02 20:38:31 +0100423 uint8_t packet_type;
424 uint8_t version; /* batman version field */
425 uint8_t ttl;
Marek Lindneref261572013-04-23 21:39:57 +0800426 uint8_t reserved;
427 uint8_t dst[ETH_ALEN];
428 uint8_t src[ETH_ALEN];
429 __be16 tvlv_len;
430 uint16_t align;
431};
432
433/**
434 * struct batadv_tvlv_hdr - base tvlv header struct
435 * @type: tvlv container type (see batadv_tvlv_type)
436 * @version: tvlv container version
437 * @len: tvlv container length
438 */
439struct batadv_tvlv_hdr {
440 uint8_t type;
441 uint8_t version;
442 __be16 len;
443};
444
Marek Lindner414254e2013-04-23 21:39:58 +0800445/**
446 * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv
447 * container
448 * @bandwidth_down: advertised uplink download bandwidth
449 * @bandwidth_up: advertised uplink upload bandwidth
450 */
451struct batadv_tvlv_gateway_data {
452 __be32 bandwidth_down;
453 __be32 bandwidth_up;
454};
455
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800456/**
457 * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container
458 * @flags: translation table flags (see batadv_tt_data_flags)
459 * @ttvn: translation table version number
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200460 * @vlan_num: number of announced VLANs. In the TVLV this struct is followed by
461 * one batadv_tvlv_tt_vlan_data object per announced vlan
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800462 */
463struct batadv_tvlv_tt_data {
464 uint8_t flags;
465 uint8_t ttvn;
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200466 __be16 num_vlan;
467};
468
469/**
470 * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through
471 * the tt tvlv container
472 * @crc: crc32 checksum of the entries belonging to this vlan
473 * @vid: vlan identifier
474 * @reserved: unused, useful for alignment purposes
475 */
476struct batadv_tvlv_tt_vlan_data {
477 __be32 crc;
478 __be16 vid;
Antonio Quartulliced72932013-04-24 16:37:51 +0200479 uint16_t reserved;
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800480};
481
482/**
483 * struct batadv_tvlv_tt_change - translation table diff data
484 * @flags: status indicators concerning the non-mesh client (see
485 * batadv_tt_client_flags)
Antonio Quartullica663042013-12-15 13:26:55 +0100486 * @reserved: reserved field - useful for alignment purposes only
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800487 * @addr: mac address of non-mesh client that triggered this tt change
Antonio Quartullic018ad32013-06-04 12:11:39 +0200488 * @vid: VLAN identifier
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800489 */
490struct batadv_tvlv_tt_change {
491 uint8_t flags;
Antonio Quartullica663042013-12-15 13:26:55 +0100492 uint8_t reserved[3];
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800493 uint8_t addr[ETH_ALEN];
Antonio Quartullic018ad32013-06-04 12:11:39 +0200494 __be16 vid;
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800495};
496
Marek Lindner122edaa2013-04-23 21:40:03 +0800497/**
498 * struct batadv_tvlv_roam_adv - roaming advertisement
499 * @client: mac address of roaming client
Antonio Quartullic018ad32013-06-04 12:11:39 +0200500 * @vid: VLAN identifier
Marek Lindner122edaa2013-04-23 21:40:03 +0800501 */
502struct batadv_tvlv_roam_adv {
503 uint8_t client[ETH_ALEN];
Antonio Quartullic018ad32013-06-04 12:11:39 +0200504 __be16 vid;
Marek Lindner122edaa2013-04-23 21:40:03 +0800505};
506
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000507#endif /* _NET_BATMAN_ADV_PACKET_H_ */