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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 | ||
33a3bb4a AQ |
24 | #define batadv_tp_is_error(n) ((u8)n > 127 ? 1 : 0) |
25 | ||
ef261577 ML |
26 | /** |
27 | * enum batadv_packettype - types for batman-adv encapsulated packets | |
a1f1ac5c SW |
28 | * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV |
29 | * @BATADV_BCAST: broadcast packets carrying broadcast payload | |
30 | * @BATADV_CODED: network coded packets | |
d6f94d91 | 31 | * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V |
0da00359 | 32 | * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V |
a1f1ac5c SW |
33 | * |
34 | * @BATADV_UNICAST: unicast packets carrying unicast payload traffic | |
35 | * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original | |
36 | * payload packet | |
37 | * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of | |
38 | * the sender | |
39 | * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute | |
ef261577 ML |
40 | * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers |
41 | */ | |
acd34afa | 42 | enum batadv_packettype { |
a1f1ac5c SW |
43 | /* 0x00 - 0x3f: local packets or special rules for handling */ |
44 | BATADV_IV_OGM = 0x00, | |
45 | BATADV_BCAST = 0x01, | |
46 | BATADV_CODED = 0x02, | |
d6f94d91 | 47 | BATADV_ELP = 0x03, |
0da00359 | 48 | BATADV_OGM2 = 0x04, |
a1f1ac5c SW |
49 | /* 0x40 - 0x7f: unicast */ |
50 | #define BATADV_UNICAST_MIN 0x40 | |
51 | BATADV_UNICAST = 0x40, | |
52 | BATADV_UNICAST_FRAG = 0x41, | |
53 | BATADV_UNICAST_4ADDR = 0x42, | |
54 | BATADV_ICMP = 0x43, | |
55 | BATADV_UNICAST_TVLV = 0x44, | |
56 | #define BATADV_UNICAST_MAX 0x7f | |
57 | /* 0x80 - 0xff: reserved */ | |
7cdcf6dd AQ |
58 | }; |
59 | ||
60 | /** | |
61 | * enum batadv_subtype - packet subtype for unicast4addr | |
62 | * @BATADV_P_DATA: user payload | |
5c3a0e55 AQ |
63 | * @BATADV_P_DAT_DHT_GET: DHT request message |
64 | * @BATADV_P_DAT_DHT_PUT: DHT store message | |
65 | * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT | |
7cdcf6dd AQ |
66 | */ |
67 | enum batadv_subtype { | |
5c3a0e55 AQ |
68 | BATADV_P_DATA = 0x01, |
69 | BATADV_P_DAT_DHT_GET = 0x02, | |
70 | BATADV_P_DAT_DHT_PUT = 0x03, | |
71 | BATADV_P_DAT_CACHE_REPLY = 0x04, | |
e8958dbf | 72 | }; |
c6c8fea2 SE |
73 | |
74 | /* this file is included by batctl which needs these defines */ | |
60cf7981 | 75 | #define BATADV_COMPAT_VERSION 15 |
e8958dbf | 76 | |
18c68d59 SW |
77 | /** |
78 | * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets | |
79 | * @BATADV_NOT_BEST_NEXT_HOP: flag is set when ogm packet is forwarded and was | |
80 | * previously received from someone else than the best neighbor. | |
143d157c | 81 | * @BATADV_PRIMARIES_FIRST_HOP: flag unused. |
18c68d59 SW |
82 | * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a |
83 | * one hop neighbor on the interface where it was originally received. | |
84 | */ | |
acd34afa | 85 | enum batadv_iv_flags { |
18c68d59 SW |
86 | BATADV_NOT_BEST_NEXT_HOP = BIT(0), |
87 | BATADV_PRIMARIES_FIRST_HOP = BIT(1), | |
88 | BATADV_DIRECTLINK = BIT(2), | |
e8958dbf | 89 | }; |
c6c8fea2 SE |
90 | |
91 | /* ICMP message types */ | |
acd34afa SE |
92 | enum batadv_icmp_packettype { |
93 | BATADV_ECHO_REPLY = 0, | |
94 | BATADV_DESTINATION_UNREACHABLE = 3, | |
95 | BATADV_ECHO_REQUEST = 8, | |
96 | BATADV_TTL_EXCEEDED = 11, | |
97 | BATADV_PARAMETER_PROBLEM = 12, | |
33a3bb4a | 98 | BATADV_TP = 15, |
e8958dbf | 99 | }; |
c6c8fea2 | 100 | |
ab49886e LL |
101 | /** |
102 | * enum batadv_mcast_flags - flags for multicast capabilities and settings | |
103 | * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for | |
104 | * 224.0.0.0/24 or ff02::1 | |
4c8755d6 LL |
105 | * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets |
106 | * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets | |
ab49886e LL |
107 | */ |
108 | enum batadv_mcast_flags { | |
109 | BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0), | |
4c8755d6 LL |
110 | BATADV_MCAST_WANT_ALL_IPV4 = BIT(1), |
111 | BATADV_MCAST_WANT_ALL_IPV6 = BIT(2), | |
ab49886e LL |
112 | }; |
113 | ||
e1bf0c14 ML |
114 | /* tt data subtypes */ |
115 | #define BATADV_TT_DATA_TYPE_MASK 0x0F | |
a73105b8 | 116 | |
e1bf0c14 ML |
117 | /** |
118 | * enum batadv_tt_data_flags - flags for tt data tvlv | |
119 | * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM | |
120 | * @BATADV_TT_REQUEST: TT request message | |
121 | * @BATADV_TT_RESPONSE: TT response message | |
122 | * @BATADV_TT_FULL_TABLE: contains full table to replace existing table | |
123 | */ | |
124 | enum batadv_tt_data_flags { | |
125 | BATADV_TT_OGM_DIFF = BIT(0), | |
126 | BATADV_TT_REQUEST = BIT(1), | |
127 | BATADV_TT_RESPONSE = BIT(2), | |
128 | BATADV_TT_FULL_TABLE = BIT(4), | |
a73105b8 AQ |
129 | }; |
130 | ||
43e6f65a AQ |
131 | /** |
132 | * enum batadv_tt_client_flags - TT client specific flags | |
133 | * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table | |
134 | * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new | |
135 | * update telling its new real location has not been received/sent yet | |
136 | * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface. | |
137 | * This information is used by the "AP Isolation" feature | |
138 | * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This | |
139 | * information is used by the Extended Isolation feature | |
140 | * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table | |
141 | * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has | |
142 | * not been announced yet | |
143 | * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept | |
144 | * in the table for one more originator interval for consistency purposes | |
145 | * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of | |
146 | * the network but no nnode has already announced it | |
147 | * | |
148 | * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire. | |
149 | * Bits from 8 to 15 are called _local flags_ because they are used for local | |
150 | * computations only. | |
151 | * | |
152 | * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with | |
153 | * the other nodes in the network. To achieve this goal these flags are included | |
154 | * in the TT CRC computation. | |
9cfc7bd6 | 155 | */ |
acd34afa | 156 | enum batadv_tt_client_flags { |
8de47de5 SE |
157 | BATADV_TT_CLIENT_DEL = BIT(0), |
158 | BATADV_TT_CLIENT_ROAM = BIT(1), | |
0eb01568 | 159 | BATADV_TT_CLIENT_WIFI = BIT(4), |
9464d071 | 160 | BATADV_TT_CLIENT_ISOLA = BIT(5), |
8de47de5 SE |
161 | BATADV_TT_CLIENT_NOPURGE = BIT(8), |
162 | BATADV_TT_CLIENT_NEW = BIT(9), | |
163 | BATADV_TT_CLIENT_PENDING = BIT(10), | |
0035f97e | 164 | BATADV_TT_CLIENT_TEMP = BIT(11), |
a73105b8 AQ |
165 | }; |
166 | ||
c018ad3d | 167 | /** |
6f68b002 | 168 | * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field |
c018ad3d AQ |
169 | * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not |
170 | */ | |
171 | enum batadv_vlan_flags { | |
172 | BATADV_VLAN_HAS_TAG = BIT(15), | |
173 | }; | |
174 | ||
23721387 | 175 | /* claim frame types for the bridge loop avoidance */ |
acd34afa | 176 | enum batadv_bla_claimframe { |
3eb8773e SW |
177 | BATADV_CLAIM_TYPE_CLAIM = 0x00, |
178 | BATADV_CLAIM_TYPE_UNCLAIM = 0x01, | |
acd34afa SE |
179 | BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, |
180 | BATADV_CLAIM_TYPE_REQUEST = 0x03, | |
cd9c7bfb | 181 | BATADV_CLAIM_TYPE_LOOPDETECT = 0x04, |
23721387 SW |
182 | }; |
183 | ||
414254e3 ML |
184 | /** |
185 | * enum batadv_tvlv_type - tvlv type definitions | |
186 | * @BATADV_TVLV_GW: gateway tvlv | |
17cf0ea4 | 187 | * @BATADV_TVLV_DAT: distributed arp table tvlv |
3f4841ff | 188 | * @BATADV_TVLV_NC: network coding tvlv |
e1bf0c14 | 189 | * @BATADV_TVLV_TT: translation table tvlv |
122edaa0 | 190 | * @BATADV_TVLV_ROAM: roaming advertisement tvlv |
60432d75 | 191 | * @BATADV_TVLV_MCAST: multicast capability tvlv |
414254e3 ML |
192 | */ |
193 | enum batadv_tvlv_type { | |
194 | BATADV_TVLV_GW = 0x01, | |
17cf0ea4 | 195 | BATADV_TVLV_DAT = 0x02, |
3f4841ff | 196 | BATADV_TVLV_NC = 0x03, |
e1bf0c14 | 197 | BATADV_TVLV_TT = 0x04, |
122edaa0 | 198 | BATADV_TVLV_ROAM = 0x05, |
60432d75 | 199 | BATADV_TVLV_MCAST = 0x06, |
414254e3 ML |
200 | }; |
201 | ||
2f7a3182 | 202 | #pragma pack(2) |
23721387 SW |
203 | /* the destination hardware field in the ARP frame is used to |
204 | * transport the claim type and the group id | |
205 | */ | |
96412690 | 206 | struct batadv_bla_claim_dst { |
6b5e971a SE |
207 | u8 magic[3]; /* FF:43:05 */ |
208 | u8 type; /* bla_claimframe */ | |
3e2f1a1b | 209 | __be16 group; /* group id */ |
f6c57a46 | 210 | }; |
aa143d28 | 211 | |
2f7a3182 | 212 | #pragma pack() |
23721387 | 213 | |
ef261577 ML |
214 | /** |
215 | * struct batadv_ogm_packet - ogm (routing protocol) packet | |
a40d9b07 SW |
216 | * @packet_type: batman-adv packet type, part of the general header |
217 | * @version: batman-adv protocol version, part of the genereal header | |
218 | * @ttl: time to live for this packet, part of the genereal header | |
18c68d59 | 219 | * @flags: contains routing relevant flags - see enum batadv_iv_flags |
7afcbbef SE |
220 | * @seqno: sequence identification |
221 | * @orig: address of the source node | |
222 | * @prev_sender: address of the previous sender | |
223 | * @reserved: reserved byte for alignment | |
224 | * @tq: transmission quality | |
ef261577 ML |
225 | * @tvlv_len: length of tvlv data following the ogm header |
226 | */ | |
96412690 | 227 | struct batadv_ogm_packet { |
6b5e971a SE |
228 | u8 packet_type; |
229 | u8 version; | |
230 | u8 ttl; | |
231 | u8 flags; | |
232 | __be32 seqno; | |
233 | u8 orig[ETH_ALEN]; | |
234 | u8 prev_sender[ETH_ALEN]; | |
235 | u8 reserved; | |
236 | u8 tq; | |
237 | __be16 tvlv_len; | |
9284a47e SW |
238 | /* __packed is not needed as the struct size is divisible by 4, |
239 | * and the largest data type in this struct has a size of 4. | |
240 | */ | |
241 | }; | |
c6c8fea2 | 242 | |
96412690 | 243 | #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) |
c6c8fea2 | 244 | |
0da00359 AQ |
245 | /** |
246 | * struct batadv_ogm2_packet - ogm2 (routing protocol) packet | |
247 | * @packet_type: batman-adv packet type, part of the general header | |
248 | * @version: batman-adv protocol version, part of the general header | |
249 | * @ttl: time to live for this packet, part of the general header | |
250 | * @flags: reseved for routing relevant flags - currently always 0 | |
251 | * @seqno: sequence number | |
252 | * @orig: originator mac address | |
253 | * @tvlv_len: length of the appended tvlv buffer (in bytes) | |
254 | * @throughput: the currently flooded path throughput | |
255 | */ | |
256 | struct batadv_ogm2_packet { | |
257 | u8 packet_type; | |
258 | u8 version; | |
259 | u8 ttl; | |
260 | u8 flags; | |
261 | __be32 seqno; | |
262 | u8 orig[ETH_ALEN]; | |
263 | __be16 tvlv_len; | |
264 | __be32 throughput; | |
265 | /* __packed is not needed as the struct size is divisible by 4, | |
266 | * and the largest data type in this struct has a size of 4. | |
267 | */ | |
268 | }; | |
269 | ||
270 | #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet) | |
271 | ||
d6f94d91 LL |
272 | /** |
273 | * struct batadv_elp_packet - elp (neighbor discovery) packet | |
274 | * @packet_type: batman-adv packet type, part of the general header | |
275 | * @version: batman-adv protocol version, part of the genereal header | |
276 | * @orig: originator mac address | |
277 | * @seqno: sequence number | |
278 | * @elp_interval: currently used ELP sending interval in ms | |
279 | */ | |
280 | struct batadv_elp_packet { | |
281 | u8 packet_type; | |
282 | u8 version; | |
283 | u8 orig[ETH_ALEN]; | |
284 | __be32 seqno; | |
285 | __be32 elp_interval; | |
286 | }; | |
287 | ||
288 | #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet) | |
289 | ||
33a3bb4a AQ |
290 | /** |
291 | * enum batadv_icmp_user_cmd_type - types for batman-adv icmp cmd modes | |
292 | * @BATADV_TP_START: start a throughput meter run | |
293 | * @BATADV_TP_STOP: stop a throughput meter run | |
294 | */ | |
295 | enum batadv_icmp_user_cmd_type { | |
296 | BATADV_TP_START = 0, | |
297 | BATADV_TP_STOP = 2, | |
298 | }; | |
299 | ||
0bf84c16 | 300 | /** |
6f68b002 | 301 | * struct batadv_icmp_header - common members among all the ICMP packets |
a40d9b07 SW |
302 | * @packet_type: batman-adv packet type, part of the general header |
303 | * @version: batman-adv protocol version, part of the genereal header | |
304 | * @ttl: time to live for this packet, part of the genereal header | |
0bf84c16 AQ |
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 | |
27a417e6 AQ |
309 | * @align: not used - useful for alignment purposes only |
310 | * | |
311 | * This structure is used for ICMP packets parsing only and it is never sent | |
312 | * over the wire. The alignment field at the end is there to ensure that | |
313 | * members are padded the same way as they are in real packets. | |
0bf84c16 AQ |
314 | */ |
315 | struct batadv_icmp_header { | |
6b5e971a SE |
316 | u8 packet_type; |
317 | u8 version; | |
318 | u8 ttl; | |
319 | u8 msg_type; /* see ICMP message types above */ | |
320 | u8 dst[ETH_ALEN]; | |
321 | u8 orig[ETH_ALEN]; | |
322 | u8 uid; | |
323 | u8 align[3]; | |
0bf84c16 AQ |
324 | }; |
325 | ||
326 | /** | |
6f68b002 | 327 | * struct batadv_icmp_packet - ICMP packet |
27a417e6 AQ |
328 | * @packet_type: batman-adv packet type, part of the general header |
329 | * @version: batman-adv protocol version, part of the genereal header | |
330 | * @ttl: time to live for this packet, part of the genereal header | |
331 | * @msg_type: ICMP packet type | |
332 | * @dst: address of the destination node | |
333 | * @orig: address of the source node | |
334 | * @uid: local ICMP socket identifier | |
0bf84c16 AQ |
335 | * @reserved: not used - useful for alignment |
336 | * @seqno: ICMP sequence number | |
337 | */ | |
338 | struct batadv_icmp_packet { | |
6b5e971a SE |
339 | u8 packet_type; |
340 | u8 version; | |
341 | u8 ttl; | |
342 | u8 msg_type; /* see ICMP message types above */ | |
343 | u8 dst[ETH_ALEN]; | |
344 | u8 orig[ETH_ALEN]; | |
345 | u8 uid; | |
346 | u8 reserved; | |
347 | __be16 seqno; | |
f6c57a46 | 348 | }; |
c6c8fea2 | 349 | |
33a3bb4a AQ |
350 | /** |
351 | * struct batadv_icmp_tp_packet - ICMP TP Meter packet | |
352 | * @packet_type: batman-adv packet type, part of the general header | |
353 | * @version: batman-adv protocol version, part of the genereal header | |
354 | * @ttl: time to live for this packet, part of the genereal header | |
355 | * @msg_type: ICMP packet type | |
356 | * @dst: address of the destination node | |
357 | * @orig: address of the source node | |
358 | * @uid: local ICMP socket identifier | |
359 | * @subtype: TP packet subtype (see batadv_icmp_tp_subtype) | |
360 | * @session: TP session identifier | |
361 | * @seqno: the TP sequence number | |
362 | * @timestamp: time when the packet has been sent. This value is filled in a | |
363 | * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the | |
364 | * RTT. Since it is read only by the host which wrote it, there is no need to | |
365 | * store it using network order | |
366 | */ | |
367 | struct batadv_icmp_tp_packet { | |
368 | u8 packet_type; | |
369 | u8 version; | |
370 | u8 ttl; | |
371 | u8 msg_type; /* see ICMP message types above */ | |
372 | u8 dst[ETH_ALEN]; | |
373 | u8 orig[ETH_ALEN]; | |
374 | u8 uid; | |
375 | u8 subtype; | |
376 | u8 session[2]; | |
377 | __be32 seqno; | |
378 | __be32 timestamp; | |
379 | }; | |
380 | ||
381 | /** | |
382 | * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes | |
383 | * @BATADV_TP_MSG: Msg from sender to receiver | |
384 | * @BATADV_TP_ACK: acknowledgment from receiver to sender | |
385 | */ | |
386 | enum batadv_icmp_tp_subtype { | |
387 | BATADV_TP_MSG = 0, | |
388 | BATADV_TP_ACK, | |
389 | }; | |
390 | ||
7e071c79 | 391 | #define BATADV_RR_LEN 16 |
c6c8fea2 | 392 | |
0bf84c16 | 393 | /** |
6f68b002 | 394 | * struct batadv_icmp_packet_rr - ICMP RouteRecord packet |
27a417e6 AQ |
395 | * @packet_type: batman-adv packet type, part of the general header |
396 | * @version: batman-adv protocol version, part of the genereal header | |
397 | * @ttl: time to live for this packet, part of the genereal header | |
398 | * @msg_type: ICMP packet type | |
399 | * @dst: address of the destination node | |
400 | * @orig: address of the source node | |
401 | * @uid: local ICMP socket identifier | |
0bf84c16 AQ |
402 | * @rr_cur: number of entries the rr array |
403 | * @seqno: ICMP sequence number | |
404 | * @rr: route record array | |
9cfc7bd6 | 405 | */ |
96412690 | 406 | struct batadv_icmp_packet_rr { |
6b5e971a SE |
407 | u8 packet_type; |
408 | u8 version; | |
409 | u8 ttl; | |
410 | u8 msg_type; /* see ICMP message types above */ | |
411 | u8 dst[ETH_ALEN]; | |
412 | u8 orig[ETH_ALEN]; | |
413 | u8 uid; | |
414 | u8 rr_cur; | |
415 | __be16 seqno; | |
416 | u8 rr[BATADV_RR_LEN][ETH_ALEN]; | |
f6c57a46 | 417 | }; |
c6c8fea2 | 418 | |
da6b8c20 SW |
419 | #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) |
420 | ||
e022b956 SE |
421 | /* All packet headers in front of an ethernet header have to be completely |
422 | * divisible by 2 but not by 4 to make the payload after the ethernet | |
423 | * header again 4 bytes boundary aligned. | |
424 | * | |
425 | * A packing of 2 is necessary to avoid extra padding at the end of the struct | |
426 | * caused by a structure member which is larger than two bytes. Otherwise | |
427 | * the structure would not fulfill the previously mentioned rule to avoid the | |
428 | * misalignment of the payload after the ethernet header. It may also lead to | |
429 | * leakage of information when the padding it not initialized before sending. | |
430 | */ | |
431 | #pragma pack(2) | |
432 | ||
a40d9b07 SW |
433 | /** |
434 | * struct batadv_unicast_packet - unicast packet for network payload | |
435 | * @packet_type: batman-adv packet type, part of the general header | |
436 | * @version: batman-adv protocol version, part of the genereal header | |
437 | * @ttl: time to live for this packet, part of the genereal header | |
438 | * @ttvn: translation table version number | |
439 | * @dest: originator destination of the unicast packet | |
440 | */ | |
96412690 | 441 | struct batadv_unicast_packet { |
6b5e971a SE |
442 | u8 packet_type; |
443 | u8 version; | |
444 | u8 ttl; | |
445 | u8 ttvn; /* destination translation table version number */ | |
446 | u8 dest[ETH_ALEN]; | |
f6c57a46 SE |
447 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
448 | * following ethernet header again 4 bytes boundary aligned | |
449 | */ | |
450 | }; | |
c6c8fea2 | 451 | |
7cdcf6dd AQ |
452 | /** |
453 | * struct batadv_unicast_4addr_packet - extended unicast packet | |
454 | * @u: common unicast packet header | |
455 | * @src: address of the source | |
456 | * @subtype: packet subtype | |
7afcbbef | 457 | * @reserved: reserved byte for alignment |
7cdcf6dd AQ |
458 | */ |
459 | struct batadv_unicast_4addr_packet { | |
460 | struct batadv_unicast_packet u; | |
6b5e971a SE |
461 | u8 src[ETH_ALEN]; |
462 | u8 subtype; | |
463 | u8 reserved; | |
7cdcf6dd AQ |
464 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
465 | * following ethernet header again 4 bytes boundary aligned | |
466 | */ | |
467 | }; | |
468 | ||
610bfc6b MH |
469 | /** |
470 | * struct batadv_frag_packet - fragmented packet | |
a40d9b07 SW |
471 | * @packet_type: batman-adv packet type, part of the general header |
472 | * @version: batman-adv protocol version, part of the genereal header | |
473 | * @ttl: time to live for this packet, part of the genereal header | |
610bfc6b MH |
474 | * @dest: final destination used when routing fragments |
475 | * @orig: originator of the fragment used when merging the packet | |
476 | * @no: fragment number within this sequence | |
c0f25c80 | 477 | * @priority: priority of frame, from ToS IP precedence or 802.1p |
610bfc6b MH |
478 | * @reserved: reserved byte for alignment |
479 | * @seqno: sequence identification | |
480 | * @total_size: size of the merged packet | |
481 | */ | |
482 | struct batadv_frag_packet { | |
6b5e971a SE |
483 | u8 packet_type; |
484 | u8 version; /* batman version field */ | |
485 | u8 ttl; | |
610bfc6b | 486 | #if defined(__BIG_ENDIAN_BITFIELD) |
6b5e971a | 487 | u8 no:4; |
c0f25c80 AL |
488 | u8 priority:3; |
489 | u8 reserved:1; | |
610bfc6b | 490 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
c0f25c80 AL |
491 | u8 reserved:1; |
492 | u8 priority:3; | |
6b5e971a | 493 | u8 no:4; |
610bfc6b | 494 | #else |
3f68785e | 495 | #error "unknown bitfield endianness" |
610bfc6b | 496 | #endif |
6b5e971a SE |
497 | u8 dest[ETH_ALEN]; |
498 | u8 orig[ETH_ALEN]; | |
499 | __be16 seqno; | |
500 | __be16 total_size; | |
610bfc6b MH |
501 | }; |
502 | ||
a40d9b07 SW |
503 | /** |
504 | * struct batadv_bcast_packet - broadcast packet for network payload | |
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 | |
508 | * @reserved: reserved byte for alignment | |
509 | * @seqno: sequence identification | |
510 | * @orig: originator of the broadcast packet | |
511 | */ | |
96412690 | 512 | struct batadv_bcast_packet { |
6b5e971a SE |
513 | u8 packet_type; |
514 | u8 version; /* batman version field */ | |
515 | u8 ttl; | |
516 | u8 reserved; | |
517 | __be32 seqno; | |
518 | u8 orig[ETH_ALEN]; | |
f6c57a46 SE |
519 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
520 | * following ethernet header again 4 bytes boundary aligned | |
521 | */ | |
e022b956 SE |
522 | }; |
523 | ||
3c12de9a MH |
524 | /** |
525 | * struct batadv_coded_packet - network coded packet | |
a40d9b07 SW |
526 | * @packet_type: batman-adv packet type, part of the general header |
527 | * @version: batman-adv protocol version, part of the genereal header | |
528 | * @ttl: time to live for this packet, part of the genereal header | |
3c12de9a MH |
529 | * @first_source: original source of first included packet |
530 | * @first_orig_dest: original destinal of first included packet | |
531 | * @first_crc: checksum of first included packet | |
532 | * @first_ttvn: tt-version number of first included packet | |
533 | * @second_ttl: ttl of second packet | |
534 | * @second_dest: second receiver of this coded packet | |
535 | * @second_source: original source of second included packet | |
536 | * @second_orig_dest: original destination of second included packet | |
537 | * @second_crc: checksum of second included packet | |
538 | * @second_ttvn: tt version number of second included packet | |
539 | * @coded_len: length of network coded part of the payload | |
540 | */ | |
541 | struct batadv_coded_packet { | |
6b5e971a SE |
542 | u8 packet_type; |
543 | u8 version; /* batman version field */ | |
544 | u8 ttl; | |
545 | u8 first_ttvn; | |
546 | /* u8 first_dest[ETH_ALEN]; - saved in mac header destination */ | |
547 | u8 first_source[ETH_ALEN]; | |
548 | u8 first_orig_dest[ETH_ALEN]; | |
549 | __be32 first_crc; | |
550 | u8 second_ttl; | |
551 | u8 second_ttvn; | |
552 | u8 second_dest[ETH_ALEN]; | |
553 | u8 second_source[ETH_ALEN]; | |
554 | u8 second_orig_dest[ETH_ALEN]; | |
555 | __be32 second_crc; | |
556 | __be16 coded_len; | |
3c12de9a MH |
557 | }; |
558 | ||
46b76e0b SW |
559 | #pragma pack() |
560 | ||
ef261577 | 561 | /** |
6d030de8 | 562 | * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload |
a40d9b07 SW |
563 | * @packet_type: batman-adv packet type, part of the general header |
564 | * @version: batman-adv protocol version, part of the genereal header | |
565 | * @ttl: time to live for this packet, part of the genereal header | |
ef261577 ML |
566 | * @reserved: reserved field (for packet alignment) |
567 | * @src: address of the source | |
568 | * @dst: address of the destination | |
569 | * @tvlv_len: length of tvlv data following the unicast tvlv header | |
3f68785e | 570 | * @align: 2 bytes to align the header to a 4 byte boundary |
ef261577 ML |
571 | */ |
572 | struct batadv_unicast_tvlv_packet { | |
6b5e971a SE |
573 | u8 packet_type; |
574 | u8 version; /* batman version field */ | |
575 | u8 ttl; | |
576 | u8 reserved; | |
577 | u8 dst[ETH_ALEN]; | |
578 | u8 src[ETH_ALEN]; | |
579 | __be16 tvlv_len; | |
580 | u16 align; | |
ef261577 ML |
581 | }; |
582 | ||
583 | /** | |
584 | * struct batadv_tvlv_hdr - base tvlv header struct | |
585 | * @type: tvlv container type (see batadv_tvlv_type) | |
586 | * @version: tvlv container version | |
587 | * @len: tvlv container length | |
588 | */ | |
589 | struct batadv_tvlv_hdr { | |
6b5e971a SE |
590 | u8 type; |
591 | u8 version; | |
592 | __be16 len; | |
ef261577 ML |
593 | }; |
594 | ||
414254e3 ML |
595 | /** |
596 | * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv | |
597 | * container | |
598 | * @bandwidth_down: advertised uplink download bandwidth | |
599 | * @bandwidth_up: advertised uplink upload bandwidth | |
600 | */ | |
601 | struct batadv_tvlv_gateway_data { | |
602 | __be32 bandwidth_down; | |
603 | __be32 bandwidth_up; | |
604 | }; | |
605 | ||
e1bf0c14 ML |
606 | /** |
607 | * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container | |
608 | * @flags: translation table flags (see batadv_tt_data_flags) | |
609 | * @ttvn: translation table version number | |
e51f0397 | 610 | * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by |
7ea7b4a1 | 611 | * one batadv_tvlv_tt_vlan_data object per announced vlan |
e1bf0c14 ML |
612 | */ |
613 | struct batadv_tvlv_tt_data { | |
6b5e971a SE |
614 | u8 flags; |
615 | u8 ttvn; | |
616 | __be16 num_vlan; | |
7ea7b4a1 AQ |
617 | }; |
618 | ||
619 | /** | |
620 | * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through | |
621 | * the tt tvlv container | |
622 | * @crc: crc32 checksum of the entries belonging to this vlan | |
623 | * @vid: vlan identifier | |
624 | * @reserved: unused, useful for alignment purposes | |
625 | */ | |
626 | struct batadv_tvlv_tt_vlan_data { | |
6b5e971a SE |
627 | __be32 crc; |
628 | __be16 vid; | |
629 | u16 reserved; | |
e1bf0c14 ML |
630 | }; |
631 | ||
632 | /** | |
633 | * struct batadv_tvlv_tt_change - translation table diff data | |
634 | * @flags: status indicators concerning the non-mesh client (see | |
635 | * batadv_tt_client_flags) | |
ca663046 | 636 | * @reserved: reserved field - useful for alignment purposes only |
e1bf0c14 | 637 | * @addr: mac address of non-mesh client that triggered this tt change |
c018ad3d | 638 | * @vid: VLAN identifier |
e1bf0c14 ML |
639 | */ |
640 | struct batadv_tvlv_tt_change { | |
6b5e971a SE |
641 | u8 flags; |
642 | u8 reserved[3]; | |
643 | u8 addr[ETH_ALEN]; | |
c018ad3d | 644 | __be16 vid; |
e1bf0c14 ML |
645 | }; |
646 | ||
122edaa0 ML |
647 | /** |
648 | * struct batadv_tvlv_roam_adv - roaming advertisement | |
649 | * @client: mac address of roaming client | |
c018ad3d | 650 | * @vid: VLAN identifier |
122edaa0 ML |
651 | */ |
652 | struct batadv_tvlv_roam_adv { | |
6b5e971a | 653 | u8 client[ETH_ALEN]; |
c018ad3d | 654 | __be16 vid; |
122edaa0 ML |
655 | }; |
656 | ||
60432d75 LL |
657 | /** |
658 | * struct batadv_tvlv_mcast_data - payload of a multicast tvlv | |
659 | * @flags: multicast flags announced by the orig node | |
660 | * @reserved: reserved field | |
661 | */ | |
662 | struct batadv_tvlv_mcast_data { | |
6b5e971a SE |
663 | u8 flags; |
664 | u8 reserved[3]; | |
60432d75 LL |
665 | }; |
666 | ||
c6c8fea2 | 667 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |