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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 | ||
c018ad3d | 131 | /** |
6f68b002 | 132 | * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field |
c018ad3d AQ |
133 | * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not |
134 | */ | |
135 | enum batadv_vlan_flags { | |
136 | BATADV_VLAN_HAS_TAG = BIT(15), | |
137 | }; | |
138 | ||
23721387 | 139 | /* claim frame types for the bridge loop avoidance */ |
acd34afa | 140 | enum batadv_bla_claimframe { |
3eb8773e SW |
141 | BATADV_CLAIM_TYPE_CLAIM = 0x00, |
142 | BATADV_CLAIM_TYPE_UNCLAIM = 0x01, | |
acd34afa SE |
143 | BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, |
144 | BATADV_CLAIM_TYPE_REQUEST = 0x03, | |
cd9c7bfb | 145 | BATADV_CLAIM_TYPE_LOOPDETECT = 0x04, |
23721387 SW |
146 | }; |
147 | ||
414254e3 ML |
148 | /** |
149 | * enum batadv_tvlv_type - tvlv type definitions | |
150 | * @BATADV_TVLV_GW: gateway tvlv | |
17cf0ea4 | 151 | * @BATADV_TVLV_DAT: distributed arp table tvlv |
3f4841ff | 152 | * @BATADV_TVLV_NC: network coding tvlv |
e1bf0c14 | 153 | * @BATADV_TVLV_TT: translation table tvlv |
122edaa0 | 154 | * @BATADV_TVLV_ROAM: roaming advertisement tvlv |
60432d75 | 155 | * @BATADV_TVLV_MCAST: multicast capability tvlv |
414254e3 ML |
156 | */ |
157 | enum batadv_tvlv_type { | |
158 | BATADV_TVLV_GW = 0x01, | |
17cf0ea4 | 159 | BATADV_TVLV_DAT = 0x02, |
3f4841ff | 160 | BATADV_TVLV_NC = 0x03, |
e1bf0c14 | 161 | BATADV_TVLV_TT = 0x04, |
122edaa0 | 162 | BATADV_TVLV_ROAM = 0x05, |
60432d75 | 163 | BATADV_TVLV_MCAST = 0x06, |
414254e3 ML |
164 | }; |
165 | ||
2f7a3182 | 166 | #pragma pack(2) |
23721387 SW |
167 | /* the destination hardware field in the ARP frame is used to |
168 | * transport the claim type and the group id | |
169 | */ | |
96412690 | 170 | struct batadv_bla_claim_dst { |
6b5e971a SE |
171 | u8 magic[3]; /* FF:43:05 */ |
172 | u8 type; /* bla_claimframe */ | |
3e2f1a1b | 173 | __be16 group; /* group id */ |
f6c57a46 | 174 | }; |
aa143d28 | 175 | |
2f7a3182 | 176 | #pragma pack() |
23721387 | 177 | |
ef261577 ML |
178 | /** |
179 | * struct batadv_ogm_packet - ogm (routing protocol) packet | |
a40d9b07 SW |
180 | * @packet_type: batman-adv packet type, part of the general header |
181 | * @version: batman-adv protocol version, part of the genereal header | |
182 | * @ttl: time to live for this packet, part of the genereal header | |
18c68d59 | 183 | * @flags: contains routing relevant flags - see enum batadv_iv_flags |
7afcbbef SE |
184 | * @seqno: sequence identification |
185 | * @orig: address of the source node | |
186 | * @prev_sender: address of the previous sender | |
187 | * @reserved: reserved byte for alignment | |
188 | * @tq: transmission quality | |
ef261577 ML |
189 | * @tvlv_len: length of tvlv data following the ogm header |
190 | */ | |
96412690 | 191 | struct batadv_ogm_packet { |
6b5e971a SE |
192 | u8 packet_type; |
193 | u8 version; | |
194 | u8 ttl; | |
195 | u8 flags; | |
196 | __be32 seqno; | |
197 | u8 orig[ETH_ALEN]; | |
198 | u8 prev_sender[ETH_ALEN]; | |
199 | u8 reserved; | |
200 | u8 tq; | |
201 | __be16 tvlv_len; | |
9284a47e SW |
202 | /* __packed is not needed as the struct size is divisible by 4, |
203 | * and the largest data type in this struct has a size of 4. | |
204 | */ | |
205 | }; | |
c6c8fea2 | 206 | |
96412690 | 207 | #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) |
c6c8fea2 | 208 | |
0da00359 AQ |
209 | /** |
210 | * struct batadv_ogm2_packet - ogm2 (routing protocol) packet | |
211 | * @packet_type: batman-adv packet type, part of the general header | |
212 | * @version: batman-adv protocol version, part of the general header | |
213 | * @ttl: time to live for this packet, part of the general header | |
214 | * @flags: reseved for routing relevant flags - currently always 0 | |
215 | * @seqno: sequence number | |
216 | * @orig: originator mac address | |
217 | * @tvlv_len: length of the appended tvlv buffer (in bytes) | |
218 | * @throughput: the currently flooded path throughput | |
219 | */ | |
220 | struct batadv_ogm2_packet { | |
221 | u8 packet_type; | |
222 | u8 version; | |
223 | u8 ttl; | |
224 | u8 flags; | |
225 | __be32 seqno; | |
226 | u8 orig[ETH_ALEN]; | |
227 | __be16 tvlv_len; | |
228 | __be32 throughput; | |
229 | /* __packed is not needed as the struct size is divisible by 4, | |
230 | * and the largest data type in this struct has a size of 4. | |
231 | */ | |
232 | }; | |
233 | ||
234 | #define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet) | |
235 | ||
d6f94d91 LL |
236 | /** |
237 | * struct batadv_elp_packet - elp (neighbor discovery) packet | |
238 | * @packet_type: batman-adv packet type, part of the general header | |
239 | * @version: batman-adv protocol version, part of the genereal header | |
240 | * @orig: originator mac address | |
241 | * @seqno: sequence number | |
242 | * @elp_interval: currently used ELP sending interval in ms | |
243 | */ | |
244 | struct batadv_elp_packet { | |
245 | u8 packet_type; | |
246 | u8 version; | |
247 | u8 orig[ETH_ALEN]; | |
248 | __be32 seqno; | |
249 | __be32 elp_interval; | |
250 | }; | |
251 | ||
252 | #define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet) | |
253 | ||
33a3bb4a AQ |
254 | /** |
255 | * enum batadv_icmp_user_cmd_type - types for batman-adv icmp cmd modes | |
256 | * @BATADV_TP_START: start a throughput meter run | |
257 | * @BATADV_TP_STOP: stop a throughput meter run | |
258 | */ | |
259 | enum batadv_icmp_user_cmd_type { | |
260 | BATADV_TP_START = 0, | |
261 | BATADV_TP_STOP = 2, | |
262 | }; | |
263 | ||
0bf84c16 | 264 | /** |
6f68b002 | 265 | * struct batadv_icmp_header - common members among all the ICMP packets |
a40d9b07 SW |
266 | * @packet_type: batman-adv packet type, part of the general header |
267 | * @version: batman-adv protocol version, part of the genereal header | |
268 | * @ttl: time to live for this packet, part of the genereal header | |
0bf84c16 AQ |
269 | * @msg_type: ICMP packet type |
270 | * @dst: address of the destination node | |
271 | * @orig: address of the source node | |
272 | * @uid: local ICMP socket identifier | |
27a417e6 AQ |
273 | * @align: not used - useful for alignment purposes only |
274 | * | |
275 | * This structure is used for ICMP packets parsing only and it is never sent | |
276 | * over the wire. The alignment field at the end is there to ensure that | |
277 | * members are padded the same way as they are in real packets. | |
0bf84c16 AQ |
278 | */ |
279 | struct batadv_icmp_header { | |
6b5e971a SE |
280 | u8 packet_type; |
281 | u8 version; | |
282 | u8 ttl; | |
283 | u8 msg_type; /* see ICMP message types above */ | |
284 | u8 dst[ETH_ALEN]; | |
285 | u8 orig[ETH_ALEN]; | |
286 | u8 uid; | |
287 | u8 align[3]; | |
0bf84c16 AQ |
288 | }; |
289 | ||
290 | /** | |
6f68b002 | 291 | * struct batadv_icmp_packet - ICMP packet |
27a417e6 AQ |
292 | * @packet_type: batman-adv packet type, part of the general header |
293 | * @version: batman-adv protocol version, part of the genereal header | |
294 | * @ttl: time to live for this packet, part of the genereal header | |
295 | * @msg_type: ICMP packet type | |
296 | * @dst: address of the destination node | |
297 | * @orig: address of the source node | |
298 | * @uid: local ICMP socket identifier | |
0bf84c16 AQ |
299 | * @reserved: not used - useful for alignment |
300 | * @seqno: ICMP sequence number | |
301 | */ | |
302 | struct batadv_icmp_packet { | |
6b5e971a SE |
303 | u8 packet_type; |
304 | u8 version; | |
305 | u8 ttl; | |
306 | u8 msg_type; /* see ICMP message types above */ | |
307 | u8 dst[ETH_ALEN]; | |
308 | u8 orig[ETH_ALEN]; | |
309 | u8 uid; | |
310 | u8 reserved; | |
311 | __be16 seqno; | |
f6c57a46 | 312 | }; |
c6c8fea2 | 313 | |
33a3bb4a AQ |
314 | /** |
315 | * struct batadv_icmp_tp_packet - ICMP TP Meter packet | |
316 | * @packet_type: batman-adv packet type, part of the general header | |
317 | * @version: batman-adv protocol version, part of the genereal header | |
318 | * @ttl: time to live for this packet, part of the genereal header | |
319 | * @msg_type: ICMP packet type | |
320 | * @dst: address of the destination node | |
321 | * @orig: address of the source node | |
322 | * @uid: local ICMP socket identifier | |
323 | * @subtype: TP packet subtype (see batadv_icmp_tp_subtype) | |
324 | * @session: TP session identifier | |
325 | * @seqno: the TP sequence number | |
326 | * @timestamp: time when the packet has been sent. This value is filled in a | |
327 | * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the | |
328 | * RTT. Since it is read only by the host which wrote it, there is no need to | |
329 | * store it using network order | |
330 | */ | |
331 | struct batadv_icmp_tp_packet { | |
332 | u8 packet_type; | |
333 | u8 version; | |
334 | u8 ttl; | |
335 | u8 msg_type; /* see ICMP message types above */ | |
336 | u8 dst[ETH_ALEN]; | |
337 | u8 orig[ETH_ALEN]; | |
338 | u8 uid; | |
339 | u8 subtype; | |
340 | u8 session[2]; | |
341 | __be32 seqno; | |
342 | __be32 timestamp; | |
343 | }; | |
344 | ||
345 | /** | |
346 | * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes | |
347 | * @BATADV_TP_MSG: Msg from sender to receiver | |
348 | * @BATADV_TP_ACK: acknowledgment from receiver to sender | |
349 | */ | |
350 | enum batadv_icmp_tp_subtype { | |
351 | BATADV_TP_MSG = 0, | |
352 | BATADV_TP_ACK, | |
353 | }; | |
354 | ||
7e071c79 | 355 | #define BATADV_RR_LEN 16 |
c6c8fea2 | 356 | |
0bf84c16 | 357 | /** |
6f68b002 | 358 | * struct batadv_icmp_packet_rr - ICMP RouteRecord packet |
27a417e6 AQ |
359 | * @packet_type: batman-adv packet type, part of the general header |
360 | * @version: batman-adv protocol version, part of the genereal header | |
361 | * @ttl: time to live for this packet, part of the genereal header | |
362 | * @msg_type: ICMP packet type | |
363 | * @dst: address of the destination node | |
364 | * @orig: address of the source node | |
365 | * @uid: local ICMP socket identifier | |
0bf84c16 AQ |
366 | * @rr_cur: number of entries the rr array |
367 | * @seqno: ICMP sequence number | |
368 | * @rr: route record array | |
9cfc7bd6 | 369 | */ |
96412690 | 370 | struct batadv_icmp_packet_rr { |
6b5e971a SE |
371 | u8 packet_type; |
372 | u8 version; | |
373 | u8 ttl; | |
374 | u8 msg_type; /* see ICMP message types above */ | |
375 | u8 dst[ETH_ALEN]; | |
376 | u8 orig[ETH_ALEN]; | |
377 | u8 uid; | |
378 | u8 rr_cur; | |
379 | __be16 seqno; | |
380 | u8 rr[BATADV_RR_LEN][ETH_ALEN]; | |
f6c57a46 | 381 | }; |
c6c8fea2 | 382 | |
da6b8c20 SW |
383 | #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) |
384 | ||
e022b956 SE |
385 | /* All packet headers in front of an ethernet header have to be completely |
386 | * divisible by 2 but not by 4 to make the payload after the ethernet | |
387 | * header again 4 bytes boundary aligned. | |
388 | * | |
389 | * A packing of 2 is necessary to avoid extra padding at the end of the struct | |
390 | * caused by a structure member which is larger than two bytes. Otherwise | |
391 | * the structure would not fulfill the previously mentioned rule to avoid the | |
392 | * misalignment of the payload after the ethernet header. It may also lead to | |
393 | * leakage of information when the padding it not initialized before sending. | |
394 | */ | |
395 | #pragma pack(2) | |
396 | ||
a40d9b07 SW |
397 | /** |
398 | * struct batadv_unicast_packet - unicast packet for network payload | |
399 | * @packet_type: batman-adv packet type, part of the general header | |
400 | * @version: batman-adv protocol version, part of the genereal header | |
401 | * @ttl: time to live for this packet, part of the genereal header | |
402 | * @ttvn: translation table version number | |
403 | * @dest: originator destination of the unicast packet | |
404 | */ | |
96412690 | 405 | struct batadv_unicast_packet { |
6b5e971a SE |
406 | u8 packet_type; |
407 | u8 version; | |
408 | u8 ttl; | |
409 | u8 ttvn; /* destination translation table version number */ | |
410 | u8 dest[ETH_ALEN]; | |
f6c57a46 SE |
411 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
412 | * following ethernet header again 4 bytes boundary aligned | |
413 | */ | |
414 | }; | |
c6c8fea2 | 415 | |
7cdcf6dd AQ |
416 | /** |
417 | * struct batadv_unicast_4addr_packet - extended unicast packet | |
418 | * @u: common unicast packet header | |
419 | * @src: address of the source | |
420 | * @subtype: packet subtype | |
7afcbbef | 421 | * @reserved: reserved byte for alignment |
7cdcf6dd AQ |
422 | */ |
423 | struct batadv_unicast_4addr_packet { | |
424 | struct batadv_unicast_packet u; | |
6b5e971a SE |
425 | u8 src[ETH_ALEN]; |
426 | u8 subtype; | |
427 | u8 reserved; | |
7cdcf6dd AQ |
428 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
429 | * following ethernet header again 4 bytes boundary aligned | |
430 | */ | |
431 | }; | |
432 | ||
610bfc6b MH |
433 | /** |
434 | * struct batadv_frag_packet - fragmented packet | |
a40d9b07 SW |
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 | |
610bfc6b MH |
438 | * @dest: final destination used when routing fragments |
439 | * @orig: originator of the fragment used when merging the packet | |
440 | * @no: fragment number within this sequence | |
c0f25c80 | 441 | * @priority: priority of frame, from ToS IP precedence or 802.1p |
610bfc6b MH |
442 | * @reserved: reserved byte for alignment |
443 | * @seqno: sequence identification | |
444 | * @total_size: size of the merged packet | |
445 | */ | |
446 | struct batadv_frag_packet { | |
6b5e971a SE |
447 | u8 packet_type; |
448 | u8 version; /* batman version field */ | |
449 | u8 ttl; | |
610bfc6b | 450 | #if defined(__BIG_ENDIAN_BITFIELD) |
6b5e971a | 451 | u8 no:4; |
c0f25c80 AL |
452 | u8 priority:3; |
453 | u8 reserved:1; | |
610bfc6b | 454 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
c0f25c80 AL |
455 | u8 reserved:1; |
456 | u8 priority:3; | |
6b5e971a | 457 | u8 no:4; |
610bfc6b | 458 | #else |
3f68785e | 459 | #error "unknown bitfield endianness" |
610bfc6b | 460 | #endif |
6b5e971a SE |
461 | u8 dest[ETH_ALEN]; |
462 | u8 orig[ETH_ALEN]; | |
463 | __be16 seqno; | |
464 | __be16 total_size; | |
610bfc6b MH |
465 | }; |
466 | ||
a40d9b07 SW |
467 | /** |
468 | * struct batadv_bcast_packet - broadcast packet for network payload | |
469 | * @packet_type: batman-adv packet type, part of the general header | |
470 | * @version: batman-adv protocol version, part of the genereal header | |
471 | * @ttl: time to live for this packet, part of the genereal header | |
472 | * @reserved: reserved byte for alignment | |
473 | * @seqno: sequence identification | |
474 | * @orig: originator of the broadcast packet | |
475 | */ | |
96412690 | 476 | struct batadv_bcast_packet { |
6b5e971a SE |
477 | u8 packet_type; |
478 | u8 version; /* batman version field */ | |
479 | u8 ttl; | |
480 | u8 reserved; | |
481 | __be32 seqno; | |
482 | u8 orig[ETH_ALEN]; | |
f6c57a46 SE |
483 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
484 | * following ethernet header again 4 bytes boundary aligned | |
485 | */ | |
e022b956 SE |
486 | }; |
487 | ||
3c12de9a MH |
488 | /** |
489 | * struct batadv_coded_packet - network coded packet | |
a40d9b07 SW |
490 | * @packet_type: batman-adv packet type, part of the general header |
491 | * @version: batman-adv protocol version, part of the genereal header | |
492 | * @ttl: time to live for this packet, part of the genereal header | |
3c12de9a MH |
493 | * @first_source: original source of first included packet |
494 | * @first_orig_dest: original destinal of first included packet | |
495 | * @first_crc: checksum of first included packet | |
496 | * @first_ttvn: tt-version number of first included packet | |
497 | * @second_ttl: ttl of second packet | |
498 | * @second_dest: second receiver of this coded packet | |
499 | * @second_source: original source of second included packet | |
500 | * @second_orig_dest: original destination of second included packet | |
501 | * @second_crc: checksum of second included packet | |
502 | * @second_ttvn: tt version number of second included packet | |
503 | * @coded_len: length of network coded part of the payload | |
504 | */ | |
505 | struct batadv_coded_packet { | |
6b5e971a SE |
506 | u8 packet_type; |
507 | u8 version; /* batman version field */ | |
508 | u8 ttl; | |
509 | u8 first_ttvn; | |
510 | /* u8 first_dest[ETH_ALEN]; - saved in mac header destination */ | |
511 | u8 first_source[ETH_ALEN]; | |
512 | u8 first_orig_dest[ETH_ALEN]; | |
513 | __be32 first_crc; | |
514 | u8 second_ttl; | |
515 | u8 second_ttvn; | |
516 | u8 second_dest[ETH_ALEN]; | |
517 | u8 second_source[ETH_ALEN]; | |
518 | u8 second_orig_dest[ETH_ALEN]; | |
519 | __be32 second_crc; | |
520 | __be16 coded_len; | |
3c12de9a MH |
521 | }; |
522 | ||
46b76e0b SW |
523 | #pragma pack() |
524 | ||
ef261577 | 525 | /** |
6d030de8 | 526 | * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload |
a40d9b07 SW |
527 | * @packet_type: batman-adv packet type, part of the general header |
528 | * @version: batman-adv protocol version, part of the genereal header | |
529 | * @ttl: time to live for this packet, part of the genereal header | |
ef261577 ML |
530 | * @reserved: reserved field (for packet alignment) |
531 | * @src: address of the source | |
532 | * @dst: address of the destination | |
533 | * @tvlv_len: length of tvlv data following the unicast tvlv header | |
3f68785e | 534 | * @align: 2 bytes to align the header to a 4 byte boundary |
ef261577 ML |
535 | */ |
536 | struct batadv_unicast_tvlv_packet { | |
6b5e971a SE |
537 | u8 packet_type; |
538 | u8 version; /* batman version field */ | |
539 | u8 ttl; | |
540 | u8 reserved; | |
541 | u8 dst[ETH_ALEN]; | |
542 | u8 src[ETH_ALEN]; | |
543 | __be16 tvlv_len; | |
544 | u16 align; | |
ef261577 ML |
545 | }; |
546 | ||
547 | /** | |
548 | * struct batadv_tvlv_hdr - base tvlv header struct | |
549 | * @type: tvlv container type (see batadv_tvlv_type) | |
550 | * @version: tvlv container version | |
551 | * @len: tvlv container length | |
552 | */ | |
553 | struct batadv_tvlv_hdr { | |
6b5e971a SE |
554 | u8 type; |
555 | u8 version; | |
556 | __be16 len; | |
ef261577 ML |
557 | }; |
558 | ||
414254e3 ML |
559 | /** |
560 | * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv | |
561 | * container | |
562 | * @bandwidth_down: advertised uplink download bandwidth | |
563 | * @bandwidth_up: advertised uplink upload bandwidth | |
564 | */ | |
565 | struct batadv_tvlv_gateway_data { | |
566 | __be32 bandwidth_down; | |
567 | __be32 bandwidth_up; | |
568 | }; | |
569 | ||
e1bf0c14 ML |
570 | /** |
571 | * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container | |
572 | * @flags: translation table flags (see batadv_tt_data_flags) | |
573 | * @ttvn: translation table version number | |
e51f0397 | 574 | * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by |
7ea7b4a1 | 575 | * one batadv_tvlv_tt_vlan_data object per announced vlan |
e1bf0c14 ML |
576 | */ |
577 | struct batadv_tvlv_tt_data { | |
6b5e971a SE |
578 | u8 flags; |
579 | u8 ttvn; | |
580 | __be16 num_vlan; | |
7ea7b4a1 AQ |
581 | }; |
582 | ||
583 | /** | |
584 | * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through | |
585 | * the tt tvlv container | |
586 | * @crc: crc32 checksum of the entries belonging to this vlan | |
587 | * @vid: vlan identifier | |
588 | * @reserved: unused, useful for alignment purposes | |
589 | */ | |
590 | struct batadv_tvlv_tt_vlan_data { | |
6b5e971a SE |
591 | __be32 crc; |
592 | __be16 vid; | |
593 | u16 reserved; | |
e1bf0c14 ML |
594 | }; |
595 | ||
596 | /** | |
597 | * struct batadv_tvlv_tt_change - translation table diff data | |
598 | * @flags: status indicators concerning the non-mesh client (see | |
599 | * batadv_tt_client_flags) | |
ca663046 | 600 | * @reserved: reserved field - useful for alignment purposes only |
e1bf0c14 | 601 | * @addr: mac address of non-mesh client that triggered this tt change |
c018ad3d | 602 | * @vid: VLAN identifier |
e1bf0c14 ML |
603 | */ |
604 | struct batadv_tvlv_tt_change { | |
6b5e971a SE |
605 | u8 flags; |
606 | u8 reserved[3]; | |
607 | u8 addr[ETH_ALEN]; | |
c018ad3d | 608 | __be16 vid; |
e1bf0c14 ML |
609 | }; |
610 | ||
122edaa0 ML |
611 | /** |
612 | * struct batadv_tvlv_roam_adv - roaming advertisement | |
613 | * @client: mac address of roaming client | |
c018ad3d | 614 | * @vid: VLAN identifier |
122edaa0 ML |
615 | */ |
616 | struct batadv_tvlv_roam_adv { | |
6b5e971a | 617 | u8 client[ETH_ALEN]; |
c018ad3d | 618 | __be16 vid; |
122edaa0 ML |
619 | }; |
620 | ||
60432d75 LL |
621 | /** |
622 | * struct batadv_tvlv_mcast_data - payload of a multicast tvlv | |
623 | * @flags: multicast flags announced by the orig node | |
624 | * @reserved: reserved field | |
625 | */ | |
626 | struct batadv_tvlv_mcast_data { | |
6b5e971a SE |
627 | u8 flags; |
628 | u8 reserved[3]; | |
60432d75 LL |
629 | }; |
630 | ||
c6c8fea2 | 631 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |