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0046b040 | 1 | /* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
2 | * |
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 | |
ebf38fb7 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
16 | */ |
17 | ||
18 | #ifndef _NET_BATMAN_ADV_PACKET_H_ | |
19 | #define _NET_BATMAN_ADV_PACKET_H_ | |
20 | ||
1e2c2a4f SE |
21 | #include <asm/byteorder.h> |
22 | #include <linux/types.h> | |
23 | ||
ef261577 ML |
24 | /** |
25 | * enum batadv_packettype - types for batman-adv encapsulated packets | |
a1f1ac5c SW |
26 | * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV |
27 | * @BATADV_BCAST: broadcast packets carrying broadcast payload | |
28 | * @BATADV_CODED: network coded packets | |
d6f94d91 | 29 | * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V |
0da00359 | 30 | * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V |
a1f1ac5c SW |
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 | |
ef261577 ML |
38 | * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers |
39 | */ | |
acd34afa | 40 | enum batadv_packettype { |
a1f1ac5c SW |
41 | /* 0x00 - 0x3f: local packets or special rules for handling */ |
42 | BATADV_IV_OGM = 0x00, | |
43 | BATADV_BCAST = 0x01, | |
44 | BATADV_CODED = 0x02, | |
d6f94d91 | 45 | BATADV_ELP = 0x03, |
0da00359 | 46 | BATADV_OGM2 = 0x04, |
a1f1ac5c SW |
47 | /* 0x40 - 0x7f: unicast */ |
48 | #define BATADV_UNICAST_MIN 0x40 | |
49 | BATADV_UNICAST = 0x40, | |
50 | BATADV_UNICAST_FRAG = 0x41, | |
51 | BATADV_UNICAST_4ADDR = 0x42, | |
52 | BATADV_ICMP = 0x43, | |
53 | BATADV_UNICAST_TVLV = 0x44, | |
54 | #define BATADV_UNICAST_MAX 0x7f | |
55 | /* 0x80 - 0xff: reserved */ | |
7cdcf6dd AQ |
56 | }; |
57 | ||
58 | /** | |
59 | * enum batadv_subtype - packet subtype for unicast4addr | |
60 | * @BATADV_P_DATA: user payload | |
5c3a0e55 AQ |
61 | * @BATADV_P_DAT_DHT_GET: DHT request message |
62 | * @BATADV_P_DAT_DHT_PUT: DHT store message | |
63 | * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT | |
7cdcf6dd AQ |
64 | */ |
65 | enum batadv_subtype { | |
5c3a0e55 AQ |
66 | BATADV_P_DATA = 0x01, |
67 | BATADV_P_DAT_DHT_GET = 0x02, | |
68 | BATADV_P_DAT_DHT_PUT = 0x03, | |
69 | BATADV_P_DAT_CACHE_REPLY = 0x04, | |
e8958dbf | 70 | }; |
c6c8fea2 SE |
71 | |
72 | /* this file is included by batctl which needs these defines */ | |
60cf7981 | 73 | #define BATADV_COMPAT_VERSION 15 |
e8958dbf | 74 | |
18c68d59 SW |
75 | /** |
76 | * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets | |
77 | * @BATADV_NOT_BEST_NEXT_HOP: flag is set when ogm packet is forwarded and was | |
78 | * previously received from someone else than the best neighbor. | |
143d157c | 79 | * @BATADV_PRIMARIES_FIRST_HOP: flag unused. |
18c68d59 SW |
80 | * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a |
81 | * one hop neighbor on the interface where it was originally received. | |
82 | */ | |
acd34afa | 83 | enum batadv_iv_flags { |
18c68d59 SW |
84 | BATADV_NOT_BEST_NEXT_HOP = BIT(0), |
85 | BATADV_PRIMARIES_FIRST_HOP = BIT(1), | |
86 | BATADV_DIRECTLINK = BIT(2), | |
e8958dbf | 87 | }; |
c6c8fea2 SE |
88 | |
89 | /* ICMP message types */ | |
acd34afa SE |
90 | enum batadv_icmp_packettype { |
91 | BATADV_ECHO_REPLY = 0, | |
92 | BATADV_DESTINATION_UNREACHABLE = 3, | |
93 | BATADV_ECHO_REQUEST = 8, | |
94 | BATADV_TTL_EXCEEDED = 11, | |
95 | BATADV_PARAMETER_PROBLEM = 12, | |
e8958dbf | 96 | }; |
c6c8fea2 | 97 | |
ab49886e LL |
98 | /** |
99 | * enum batadv_mcast_flags - flags for multicast capabilities and settings | |
100 | * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for | |
101 | * 224.0.0.0/24 or ff02::1 | |
4c8755d6 LL |
102 | * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets |
103 | * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets | |
ab49886e LL |
104 | */ |
105 | enum batadv_mcast_flags { | |
106 | BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0), | |
4c8755d6 LL |
107 | BATADV_MCAST_WANT_ALL_IPV4 = BIT(1), |
108 | BATADV_MCAST_WANT_ALL_IPV6 = BIT(2), | |
ab49886e LL |
109 | }; |
110 | ||
e1bf0c14 ML |
111 | /* tt data subtypes */ |
112 | #define BATADV_TT_DATA_TYPE_MASK 0x0F | |
a73105b8 | 113 | |
e1bf0c14 ML |
114 | /** |
115 | * enum batadv_tt_data_flags - flags for tt data tvlv | |
116 | * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM | |
117 | * @BATADV_TT_REQUEST: TT request message | |
118 | * @BATADV_TT_RESPONSE: TT response message | |
119 | * @BATADV_TT_FULL_TABLE: contains full table to replace existing table | |
120 | */ | |
121 | enum batadv_tt_data_flags { | |
122 | BATADV_TT_OGM_DIFF = BIT(0), | |
123 | BATADV_TT_REQUEST = BIT(1), | |
124 | BATADV_TT_RESPONSE = BIT(2), | |
125 | BATADV_TT_FULL_TABLE = BIT(4), | |
a73105b8 AQ |
126 | }; |
127 | ||
43e6f65a AQ |
128 | /** |
129 | * enum batadv_tt_client_flags - TT client specific flags | |
130 | * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table | |
131 | * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new | |
132 | * update telling its new real location has not been received/sent yet | |
133 | * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface. | |
134 | * This information is used by the "AP Isolation" feature | |
135 | * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This | |
136 | * information is used by the Extended Isolation feature | |
137 | * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table | |
138 | * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has | |
139 | * not been announced yet | |
140 | * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept | |
141 | * in the table for one more originator interval for consistency purposes | |
142 | * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of | |
143 | * the network but no nnode has already announced it | |
144 | * | |
145 | * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire. | |
146 | * Bits from 8 to 15 are called _local flags_ because they are used for local | |
147 | * computations only. | |
148 | * | |
149 | * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with | |
150 | * the other nodes in the network. To achieve this goal these flags are included | |
151 | * in the TT CRC computation. | |
9cfc7bd6 | 152 | */ |
acd34afa | 153 | enum batadv_tt_client_flags { |
8de47de5 SE |
154 | BATADV_TT_CLIENT_DEL = BIT(0), |
155 | BATADV_TT_CLIENT_ROAM = BIT(1), | |
0eb01568 | 156 | BATADV_TT_CLIENT_WIFI = BIT(4), |
9464d071 | 157 | BATADV_TT_CLIENT_ISOLA = BIT(5), |
8de47de5 SE |
158 | BATADV_TT_CLIENT_NOPURGE = BIT(8), |
159 | BATADV_TT_CLIENT_NEW = BIT(9), | |
160 | BATADV_TT_CLIENT_PENDING = BIT(10), | |
0035f97e | 161 | BATADV_TT_CLIENT_TEMP = BIT(11), |
a73105b8 AQ |
162 | }; |
163 | ||
c018ad3d | 164 | /** |
6f68b002 | 165 | * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field |
c018ad3d AQ |
166 | * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not |
167 | */ | |
168 | enum batadv_vlan_flags { | |
169 | BATADV_VLAN_HAS_TAG = BIT(15), | |
170 | }; | |
171 | ||
23721387 | 172 | /* claim frame types for the bridge loop avoidance */ |
acd34afa | 173 | enum batadv_bla_claimframe { |
3eb8773e SW |
174 | BATADV_CLAIM_TYPE_CLAIM = 0x00, |
175 | BATADV_CLAIM_TYPE_UNCLAIM = 0x01, | |
acd34afa SE |
176 | BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, |
177 | BATADV_CLAIM_TYPE_REQUEST = 0x03, | |
23721387 SW |
178 | }; |
179 | ||
414254e3 ML |
180 | /** |
181 | * enum batadv_tvlv_type - tvlv type definitions | |
182 | * @BATADV_TVLV_GW: gateway tvlv | |
17cf0ea4 | 183 | * @BATADV_TVLV_DAT: distributed arp table tvlv |
3f4841ff | 184 | * @BATADV_TVLV_NC: network coding tvlv |
e1bf0c14 | 185 | * @BATADV_TVLV_TT: translation table tvlv |
122edaa0 | 186 | * @BATADV_TVLV_ROAM: roaming advertisement tvlv |
60432d75 | 187 | * @BATADV_TVLV_MCAST: multicast capability tvlv |
414254e3 ML |
188 | */ |
189 | enum batadv_tvlv_type { | |
190 | BATADV_TVLV_GW = 0x01, | |
17cf0ea4 | 191 | BATADV_TVLV_DAT = 0x02, |
3f4841ff | 192 | BATADV_TVLV_NC = 0x03, |
e1bf0c14 | 193 | BATADV_TVLV_TT = 0x04, |
122edaa0 | 194 | BATADV_TVLV_ROAM = 0x05, |
60432d75 | 195 | BATADV_TVLV_MCAST = 0x06, |
414254e3 ML |
196 | }; |
197 | ||
2f7a3182 | 198 | #pragma pack(2) |
23721387 SW |
199 | /* the destination hardware field in the ARP frame is used to |
200 | * transport the claim type and the group id | |
201 | */ | |
96412690 | 202 | struct batadv_bla_claim_dst { |
6b5e971a SE |
203 | u8 magic[3]; /* FF:43:05 */ |
204 | u8 type; /* bla_claimframe */ | |
3e2f1a1b | 205 | __be16 group; /* group id */ |
f6c57a46 | 206 | }; |
aa143d28 | 207 | |
2f7a3182 | 208 | #pragma pack() |
23721387 | 209 | |
ef261577 ML |
210 | /** |
211 | * struct batadv_ogm_packet - ogm (routing protocol) packet | |
a40d9b07 SW |
212 | * @packet_type: batman-adv packet type, part of the general header |
213 | * @version: batman-adv protocol version, part of the genereal header | |
214 | * @ttl: time to live for this packet, part of the genereal header | |
18c68d59 | 215 | * @flags: contains routing relevant flags - see enum batadv_iv_flags |
7afcbbef SE |
216 | * @seqno: sequence identification |
217 | * @orig: address of the source node | |
218 | * @prev_sender: address of the previous sender | |
219 | * @reserved: reserved byte for alignment | |
220 | * @tq: transmission quality | |
ef261577 ML |
221 | * @tvlv_len: length of tvlv data following the ogm header |
222 | */ | |
96412690 | 223 | struct batadv_ogm_packet { |
6b5e971a SE |
224 | u8 packet_type; |
225 | u8 version; | |
226 | u8 ttl; | |
227 | u8 flags; | |
228 | __be32 seqno; | |
229 | u8 orig[ETH_ALEN]; | |
230 | u8 prev_sender[ETH_ALEN]; | |
231 | u8 reserved; | |
232 | u8 tq; | |
233 | __be16 tvlv_len; | |
9284a47e SW |
234 | /* __packed is not needed as the struct size is divisible by 4, |
235 | * and the largest data type in this struct has a size of 4. | |
236 | */ | |
237 | }; | |
c6c8fea2 | 238 | |
96412690 | 239 | #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) |
c6c8fea2 | 240 | |
0da00359 AQ |
241 | /** |
242 | * struct batadv_ogm2_packet - ogm2 (routing protocol) packet | |
243 | * @packet_type: batman-adv packet type, part of the general header | |
244 | * @version: batman-adv protocol version, part of the general header | |
245 | * @ttl: time to live for this packet, part of the general header | |
246 | * @flags: reseved for routing relevant flags - currently always 0 | |
247 | * @seqno: sequence number | |
248 | * @orig: originator mac address | |
249 | * @tvlv_len: length of the appended tvlv buffer (in bytes) | |
250 | * @throughput: the currently flooded path throughput | |
251 | */ | |
252 | struct batadv_ogm2_packet { | |
253 | u8 packet_type; | |
254 | u8 version; | |
255 | u8 ttl; | |
256 | u8 flags; | |
257 | __be32 seqno; | |
258 | u8 orig[ETH_ALEN]; | |
259 | __be16 tvlv_len; | |
260 | __be32 throughput; | |
261 | /* __packed is not needed as the struct size is divisible by 4, | |
262 | * and the largest data type in this struct has a size of 4. | |
263 | */ | |
264 | }; | |
265 | ||
266 | #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet) | |
267 | ||
d6f94d91 LL |
268 | /** |
269 | * struct batadv_elp_packet - elp (neighbor discovery) packet | |
270 | * @packet_type: batman-adv packet type, part of the general header | |
271 | * @version: batman-adv protocol version, part of the genereal header | |
272 | * @orig: originator mac address | |
273 | * @seqno: sequence number | |
274 | * @elp_interval: currently used ELP sending interval in ms | |
275 | */ | |
276 | struct batadv_elp_packet { | |
277 | u8 packet_type; | |
278 | u8 version; | |
279 | u8 orig[ETH_ALEN]; | |
280 | __be32 seqno; | |
281 | __be32 elp_interval; | |
282 | }; | |
283 | ||
284 | #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet) | |
285 | ||
0bf84c16 | 286 | /** |
6f68b002 | 287 | * struct batadv_icmp_header - common members among all the ICMP packets |
a40d9b07 SW |
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 | |
0bf84c16 AQ |
291 | * @msg_type: ICMP packet type |
292 | * @dst: address of the destination node | |
293 | * @orig: address of the source node | |
294 | * @uid: local ICMP socket identifier | |
27a417e6 AQ |
295 | * @align: not used - useful for alignment purposes only |
296 | * | |
297 | * This structure is used for ICMP packets parsing only and it is never sent | |
298 | * over the wire. The alignment field at the end is there to ensure that | |
299 | * members are padded the same way as they are in real packets. | |
0bf84c16 AQ |
300 | */ |
301 | struct batadv_icmp_header { | |
6b5e971a SE |
302 | u8 packet_type; |
303 | u8 version; | |
304 | u8 ttl; | |
305 | u8 msg_type; /* see ICMP message types above */ | |
306 | u8 dst[ETH_ALEN]; | |
307 | u8 orig[ETH_ALEN]; | |
308 | u8 uid; | |
309 | u8 align[3]; | |
0bf84c16 AQ |
310 | }; |
311 | ||
312 | /** | |
6f68b002 | 313 | * struct batadv_icmp_packet - ICMP packet |
27a417e6 AQ |
314 | * @packet_type: batman-adv packet type, part of the general header |
315 | * @version: batman-adv protocol version, part of the genereal header | |
316 | * @ttl: time to live for this packet, part of the genereal header | |
317 | * @msg_type: ICMP packet type | |
318 | * @dst: address of the destination node | |
319 | * @orig: address of the source node | |
320 | * @uid: local ICMP socket identifier | |
0bf84c16 AQ |
321 | * @reserved: not used - useful for alignment |
322 | * @seqno: ICMP sequence number | |
323 | */ | |
324 | struct batadv_icmp_packet { | |
6b5e971a SE |
325 | u8 packet_type; |
326 | u8 version; | |
327 | u8 ttl; | |
328 | u8 msg_type; /* see ICMP message types above */ | |
329 | u8 dst[ETH_ALEN]; | |
330 | u8 orig[ETH_ALEN]; | |
331 | u8 uid; | |
332 | u8 reserved; | |
333 | __be16 seqno; | |
f6c57a46 | 334 | }; |
c6c8fea2 | 335 | |
7e071c79 | 336 | #define BATADV_RR_LEN 16 |
c6c8fea2 | 337 | |
0bf84c16 | 338 | /** |
6f68b002 | 339 | * struct batadv_icmp_packet_rr - ICMP RouteRecord packet |
27a417e6 AQ |
340 | * @packet_type: batman-adv packet type, part of the general header |
341 | * @version: batman-adv protocol version, part of the genereal header | |
342 | * @ttl: time to live for this packet, part of the genereal header | |
343 | * @msg_type: ICMP packet type | |
344 | * @dst: address of the destination node | |
345 | * @orig: address of the source node | |
346 | * @uid: local ICMP socket identifier | |
0bf84c16 AQ |
347 | * @rr_cur: number of entries the rr array |
348 | * @seqno: ICMP sequence number | |
349 | * @rr: route record array | |
9cfc7bd6 | 350 | */ |
96412690 | 351 | struct batadv_icmp_packet_rr { |
6b5e971a SE |
352 | u8 packet_type; |
353 | u8 version; | |
354 | u8 ttl; | |
355 | u8 msg_type; /* see ICMP message types above */ | |
356 | u8 dst[ETH_ALEN]; | |
357 | u8 orig[ETH_ALEN]; | |
358 | u8 uid; | |
359 | u8 rr_cur; | |
360 | __be16 seqno; | |
361 | u8 rr[BATADV_RR_LEN][ETH_ALEN]; | |
f6c57a46 | 362 | }; |
c6c8fea2 | 363 | |
da6b8c20 SW |
364 | #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) |
365 | ||
e022b956 SE |
366 | /* All packet headers in front of an ethernet header have to be completely |
367 | * divisible by 2 but not by 4 to make the payload after the ethernet | |
368 | * header again 4 bytes boundary aligned. | |
369 | * | |
370 | * A packing of 2 is necessary to avoid extra padding at the end of the struct | |
371 | * caused by a structure member which is larger than two bytes. Otherwise | |
372 | * the structure would not fulfill the previously mentioned rule to avoid the | |
373 | * misalignment of the payload after the ethernet header. It may also lead to | |
374 | * leakage of information when the padding it not initialized before sending. | |
375 | */ | |
376 | #pragma pack(2) | |
377 | ||
a40d9b07 SW |
378 | /** |
379 | * struct batadv_unicast_packet - unicast packet for network payload | |
380 | * @packet_type: batman-adv packet type, part of the general header | |
381 | * @version: batman-adv protocol version, part of the genereal header | |
382 | * @ttl: time to live for this packet, part of the genereal header | |
383 | * @ttvn: translation table version number | |
384 | * @dest: originator destination of the unicast packet | |
385 | */ | |
96412690 | 386 | struct batadv_unicast_packet { |
6b5e971a SE |
387 | u8 packet_type; |
388 | u8 version; | |
389 | u8 ttl; | |
390 | u8 ttvn; /* destination translation table version number */ | |
391 | u8 dest[ETH_ALEN]; | |
f6c57a46 SE |
392 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
393 | * following ethernet header again 4 bytes boundary aligned | |
394 | */ | |
395 | }; | |
c6c8fea2 | 396 | |
7cdcf6dd AQ |
397 | /** |
398 | * struct batadv_unicast_4addr_packet - extended unicast packet | |
399 | * @u: common unicast packet header | |
400 | * @src: address of the source | |
401 | * @subtype: packet subtype | |
7afcbbef | 402 | * @reserved: reserved byte for alignment |
7cdcf6dd AQ |
403 | */ |
404 | struct batadv_unicast_4addr_packet { | |
405 | struct batadv_unicast_packet u; | |
6b5e971a SE |
406 | u8 src[ETH_ALEN]; |
407 | u8 subtype; | |
408 | u8 reserved; | |
7cdcf6dd AQ |
409 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
410 | * following ethernet header again 4 bytes boundary aligned | |
411 | */ | |
412 | }; | |
413 | ||
610bfc6b MH |
414 | /** |
415 | * struct batadv_frag_packet - fragmented packet | |
a40d9b07 SW |
416 | * @packet_type: batman-adv packet type, part of the general header |
417 | * @version: batman-adv protocol version, part of the genereal header | |
418 | * @ttl: time to live for this packet, part of the genereal header | |
610bfc6b MH |
419 | * @dest: final destination used when routing fragments |
420 | * @orig: originator of the fragment used when merging the packet | |
421 | * @no: fragment number within this sequence | |
422 | * @reserved: reserved byte for alignment | |
423 | * @seqno: sequence identification | |
424 | * @total_size: size of the merged packet | |
425 | */ | |
426 | struct batadv_frag_packet { | |
6b5e971a SE |
427 | u8 packet_type; |
428 | u8 version; /* batman version field */ | |
429 | u8 ttl; | |
610bfc6b | 430 | #if defined(__BIG_ENDIAN_BITFIELD) |
6b5e971a SE |
431 | u8 no:4; |
432 | u8 reserved:4; | |
610bfc6b | 433 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
6b5e971a SE |
434 | u8 reserved:4; |
435 | u8 no:4; | |
610bfc6b | 436 | #else |
3f68785e | 437 | #error "unknown bitfield endianness" |
610bfc6b | 438 | #endif |
6b5e971a SE |
439 | u8 dest[ETH_ALEN]; |
440 | u8 orig[ETH_ALEN]; | |
441 | __be16 seqno; | |
442 | __be16 total_size; | |
610bfc6b MH |
443 | }; |
444 | ||
a40d9b07 SW |
445 | /** |
446 | * struct batadv_bcast_packet - broadcast packet for network payload | |
447 | * @packet_type: batman-adv packet type, part of the general header | |
448 | * @version: batman-adv protocol version, part of the genereal header | |
449 | * @ttl: time to live for this packet, part of the genereal header | |
450 | * @reserved: reserved byte for alignment | |
451 | * @seqno: sequence identification | |
452 | * @orig: originator of the broadcast packet | |
453 | */ | |
96412690 | 454 | struct batadv_bcast_packet { |
6b5e971a SE |
455 | u8 packet_type; |
456 | u8 version; /* batman version field */ | |
457 | u8 ttl; | |
458 | u8 reserved; | |
459 | __be32 seqno; | |
460 | u8 orig[ETH_ALEN]; | |
f6c57a46 SE |
461 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
462 | * following ethernet header again 4 bytes boundary aligned | |
463 | */ | |
e022b956 SE |
464 | }; |
465 | ||
3c12de9a MH |
466 | /** |
467 | * struct batadv_coded_packet - network coded packet | |
a40d9b07 SW |
468 | * @packet_type: batman-adv packet type, part of the general header |
469 | * @version: batman-adv protocol version, part of the genereal header | |
470 | * @ttl: time to live for this packet, part of the genereal header | |
3c12de9a MH |
471 | * @first_source: original source of first included packet |
472 | * @first_orig_dest: original destinal of first included packet | |
473 | * @first_crc: checksum of first included packet | |
474 | * @first_ttvn: tt-version number of first included packet | |
475 | * @second_ttl: ttl of second packet | |
476 | * @second_dest: second receiver of this coded packet | |
477 | * @second_source: original source of second included packet | |
478 | * @second_orig_dest: original destination of second included packet | |
479 | * @second_crc: checksum of second included packet | |
480 | * @second_ttvn: tt version number of second included packet | |
481 | * @coded_len: length of network coded part of the payload | |
482 | */ | |
483 | struct batadv_coded_packet { | |
6b5e971a SE |
484 | u8 packet_type; |
485 | u8 version; /* batman version field */ | |
486 | u8 ttl; | |
487 | u8 first_ttvn; | |
488 | /* u8 first_dest[ETH_ALEN]; - saved in mac header destination */ | |
489 | u8 first_source[ETH_ALEN]; | |
490 | u8 first_orig_dest[ETH_ALEN]; | |
491 | __be32 first_crc; | |
492 | u8 second_ttl; | |
493 | u8 second_ttvn; | |
494 | u8 second_dest[ETH_ALEN]; | |
495 | u8 second_source[ETH_ALEN]; | |
496 | u8 second_orig_dest[ETH_ALEN]; | |
497 | __be32 second_crc; | |
498 | __be16 coded_len; | |
3c12de9a MH |
499 | }; |
500 | ||
46b76e0b SW |
501 | #pragma pack() |
502 | ||
ef261577 ML |
503 | /** |
504 | * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload | |
a40d9b07 SW |
505 | * @packet_type: batman-adv packet type, part of the general header |
506 | * @version: batman-adv protocol version, part of the genereal header | |
507 | * @ttl: time to live for this packet, part of the genereal header | |
ef261577 ML |
508 | * @reserved: reserved field (for packet alignment) |
509 | * @src: address of the source | |
510 | * @dst: address of the destination | |
511 | * @tvlv_len: length of tvlv data following the unicast tvlv header | |
3f68785e | 512 | * @align: 2 bytes to align the header to a 4 byte boundary |
ef261577 ML |
513 | */ |
514 | struct batadv_unicast_tvlv_packet { | |
6b5e971a SE |
515 | u8 packet_type; |
516 | u8 version; /* batman version field */ | |
517 | u8 ttl; | |
518 | u8 reserved; | |
519 | u8 dst[ETH_ALEN]; | |
520 | u8 src[ETH_ALEN]; | |
521 | __be16 tvlv_len; | |
522 | u16 align; | |
ef261577 ML |
523 | }; |
524 | ||
525 | /** | |
526 | * struct batadv_tvlv_hdr - base tvlv header struct | |
527 | * @type: tvlv container type (see batadv_tvlv_type) | |
528 | * @version: tvlv container version | |
529 | * @len: tvlv container length | |
530 | */ | |
531 | struct batadv_tvlv_hdr { | |
6b5e971a SE |
532 | u8 type; |
533 | u8 version; | |
534 | __be16 len; | |
ef261577 ML |
535 | }; |
536 | ||
414254e3 ML |
537 | /** |
538 | * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv | |
539 | * container | |
540 | * @bandwidth_down: advertised uplink download bandwidth | |
541 | * @bandwidth_up: advertised uplink upload bandwidth | |
542 | */ | |
543 | struct batadv_tvlv_gateway_data { | |
544 | __be32 bandwidth_down; | |
545 | __be32 bandwidth_up; | |
546 | }; | |
547 | ||
e1bf0c14 ML |
548 | /** |
549 | * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container | |
550 | * @flags: translation table flags (see batadv_tt_data_flags) | |
551 | * @ttvn: translation table version number | |
e51f0397 | 552 | * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by |
7ea7b4a1 | 553 | * one batadv_tvlv_tt_vlan_data object per announced vlan |
e1bf0c14 ML |
554 | */ |
555 | struct batadv_tvlv_tt_data { | |
6b5e971a SE |
556 | u8 flags; |
557 | u8 ttvn; | |
558 | __be16 num_vlan; | |
7ea7b4a1 AQ |
559 | }; |
560 | ||
561 | /** | |
562 | * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through | |
563 | * the tt tvlv container | |
564 | * @crc: crc32 checksum of the entries belonging to this vlan | |
565 | * @vid: vlan identifier | |
566 | * @reserved: unused, useful for alignment purposes | |
567 | */ | |
568 | struct batadv_tvlv_tt_vlan_data { | |
6b5e971a SE |
569 | __be32 crc; |
570 | __be16 vid; | |
571 | u16 reserved; | |
e1bf0c14 ML |
572 | }; |
573 | ||
574 | /** | |
575 | * struct batadv_tvlv_tt_change - translation table diff data | |
576 | * @flags: status indicators concerning the non-mesh client (see | |
577 | * batadv_tt_client_flags) | |
ca663046 | 578 | * @reserved: reserved field - useful for alignment purposes only |
e1bf0c14 | 579 | * @addr: mac address of non-mesh client that triggered this tt change |
c018ad3d | 580 | * @vid: VLAN identifier |
e1bf0c14 ML |
581 | */ |
582 | struct batadv_tvlv_tt_change { | |
6b5e971a SE |
583 | u8 flags; |
584 | u8 reserved[3]; | |
585 | u8 addr[ETH_ALEN]; | |
c018ad3d | 586 | __be16 vid; |
e1bf0c14 ML |
587 | }; |
588 | ||
122edaa0 ML |
589 | /** |
590 | * struct batadv_tvlv_roam_adv - roaming advertisement | |
591 | * @client: mac address of roaming client | |
c018ad3d | 592 | * @vid: VLAN identifier |
122edaa0 ML |
593 | */ |
594 | struct batadv_tvlv_roam_adv { | |
6b5e971a | 595 | u8 client[ETH_ALEN]; |
c018ad3d | 596 | __be16 vid; |
122edaa0 ML |
597 | }; |
598 | ||
60432d75 LL |
599 | /** |
600 | * struct batadv_tvlv_mcast_data - payload of a multicast tvlv | |
601 | * @flags: multicast flags announced by the orig node | |
602 | * @reserved: reserved field | |
603 | */ | |
604 | struct batadv_tvlv_mcast_data { | |
6b5e971a SE |
605 | u8 flags; |
606 | u8 reserved[3]; | |
60432d75 LL |
607 | }; |
608 | ||
c6c8fea2 | 609 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |