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9cfc7bd6 | 1 | /* Copyright (C) 2007-2012 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 | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
17 | * 02110-1301, USA | |
c6c8fea2 SE |
18 | */ |
19 | ||
20 | #ifndef _NET_BATMAN_ADV_PACKET_H_ | |
21 | #define _NET_BATMAN_ADV_PACKET_H_ | |
22 | ||
7e071c79 | 23 | #define BATADV_ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */ |
c6c8fea2 | 24 | |
acd34afa | 25 | enum batadv_packettype { |
7cdcf6dd AQ |
26 | BATADV_IV_OGM = 0x01, |
27 | BATADV_ICMP = 0x02, | |
28 | BATADV_UNICAST = 0x03, | |
29 | BATADV_BCAST = 0x04, | |
30 | BATADV_VIS = 0x05, | |
31 | BATADV_UNICAST_FRAG = 0x06, | |
32 | BATADV_TT_QUERY = 0x07, | |
33 | BATADV_ROAM_ADV = 0x08, | |
34 | BATADV_UNICAST_4ADDR = 0x09, | |
35 | }; | |
36 | ||
37 | /** | |
38 | * enum batadv_subtype - packet subtype for unicast4addr | |
39 | * @BATADV_P_DATA: user payload | |
5c3a0e55 AQ |
40 | * @BATADV_P_DAT_DHT_GET: DHT request message |
41 | * @BATADV_P_DAT_DHT_PUT: DHT store message | |
42 | * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT | |
7cdcf6dd AQ |
43 | */ |
44 | enum batadv_subtype { | |
5c3a0e55 AQ |
45 | BATADV_P_DATA = 0x01, |
46 | BATADV_P_DAT_DHT_GET = 0x02, | |
47 | BATADV_P_DAT_DHT_PUT = 0x03, | |
48 | BATADV_P_DAT_CACHE_REPLY = 0x04, | |
e8958dbf | 49 | }; |
c6c8fea2 SE |
50 | |
51 | /* this file is included by batctl which needs these defines */ | |
7e071c79 | 52 | #define BATADV_COMPAT_VERSION 14 |
e8958dbf | 53 | |
acd34afa | 54 | enum batadv_iv_flags { |
8de47de5 SE |
55 | BATADV_NOT_BEST_NEXT_HOP = BIT(3), |
56 | BATADV_PRIMARIES_FIRST_HOP = BIT(4), | |
57 | BATADV_VIS_SERVER = BIT(5), | |
58 | BATADV_DIRECTLINK = BIT(6), | |
e8958dbf | 59 | }; |
c6c8fea2 SE |
60 | |
61 | /* ICMP message types */ | |
acd34afa SE |
62 | enum batadv_icmp_packettype { |
63 | BATADV_ECHO_REPLY = 0, | |
64 | BATADV_DESTINATION_UNREACHABLE = 3, | |
65 | BATADV_ECHO_REQUEST = 8, | |
66 | BATADV_TTL_EXCEEDED = 11, | |
67 | BATADV_PARAMETER_PROBLEM = 12, | |
e8958dbf | 68 | }; |
c6c8fea2 SE |
69 | |
70 | /* vis defines */ | |
acd34afa SE |
71 | enum batadv_vis_packettype { |
72 | BATADV_VIS_TYPE_SERVER_SYNC = 0, | |
73 | BATADV_VIS_TYPE_CLIENT_UPDATE = 1, | |
e8958dbf | 74 | }; |
c6c8fea2 SE |
75 | |
76 | /* fragmentation defines */ | |
acd34afa | 77 | enum batadv_unicast_frag_flags { |
8de47de5 SE |
78 | BATADV_UNI_FRAG_HEAD = BIT(0), |
79 | BATADV_UNI_FRAG_LARGETAIL = BIT(1), | |
e8958dbf | 80 | }; |
c6c8fea2 | 81 | |
a73105b8 | 82 | /* TT_QUERY subtypes */ |
7e071c79 | 83 | #define BATADV_TT_QUERY_TYPE_MASK 0x3 |
a73105b8 | 84 | |
acd34afa SE |
85 | enum batadv_tt_query_packettype { |
86 | BATADV_TT_REQUEST = 0, | |
87 | BATADV_TT_RESPONSE = 1, | |
a73105b8 AQ |
88 | }; |
89 | ||
90 | /* TT_QUERY flags */ | |
acd34afa | 91 | enum batadv_tt_query_flags { |
8de47de5 | 92 | BATADV_TT_FULL_TABLE = BIT(2), |
a73105b8 AQ |
93 | }; |
94 | ||
acd34afa | 95 | /* BATADV_TT_CLIENT flags. |
8de47de5 SE |
96 | * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to |
97 | * BIT(15) are used for local computation only | |
9cfc7bd6 | 98 | */ |
acd34afa | 99 | enum batadv_tt_client_flags { |
8de47de5 SE |
100 | BATADV_TT_CLIENT_DEL = BIT(0), |
101 | BATADV_TT_CLIENT_ROAM = BIT(1), | |
102 | BATADV_TT_CLIENT_WIFI = BIT(2), | |
30cfd02b | 103 | BATADV_TT_CLIENT_TEMP = BIT(3), |
8de47de5 SE |
104 | BATADV_TT_CLIENT_NOPURGE = BIT(8), |
105 | BATADV_TT_CLIENT_NEW = BIT(9), | |
106 | BATADV_TT_CLIENT_PENDING = BIT(10), | |
a73105b8 AQ |
107 | }; |
108 | ||
23721387 | 109 | /* claim frame types for the bridge loop avoidance */ |
acd34afa | 110 | enum batadv_bla_claimframe { |
3eb8773e SW |
111 | BATADV_CLAIM_TYPE_CLAIM = 0x00, |
112 | BATADV_CLAIM_TYPE_UNCLAIM = 0x01, | |
acd34afa SE |
113 | BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, |
114 | BATADV_CLAIM_TYPE_REQUEST = 0x03, | |
23721387 SW |
115 | }; |
116 | ||
117 | /* the destination hardware field in the ARP frame is used to | |
118 | * transport the claim type and the group id | |
119 | */ | |
96412690 | 120 | struct batadv_bla_claim_dst { |
23721387 SW |
121 | uint8_t magic[3]; /* FF:43:05 */ |
122 | uint8_t type; /* bla_claimframe */ | |
3e2f1a1b | 123 | __be16 group; /* group id */ |
f6c57a46 | 124 | }; |
23721387 | 125 | |
96412690 | 126 | struct batadv_header { |
c6c8fea2 SE |
127 | uint8_t packet_type; |
128 | uint8_t version; /* batman version field */ | |
3b27ffb0 | 129 | uint8_t ttl; |
f6c57a46 SE |
130 | /* the parent struct has to add a byte after the header to make |
131 | * everything 4 bytes aligned again | |
132 | */ | |
133 | }; | |
76543d14 | 134 | |
96412690 SE |
135 | struct batadv_ogm_packet { |
136 | struct batadv_header header; | |
c6c8fea2 | 137 | uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */ |
e0f5211f | 138 | __be32 seqno; |
c1faead3 AQ |
139 | uint8_t orig[ETH_ALEN]; |
140 | uint8_t prev_sender[ETH_ALEN]; | |
c6c8fea2 | 141 | uint8_t gw_flags; /* flags related to gateway class */ |
3b27ffb0 | 142 | uint8_t tq; |
a73105b8 AQ |
143 | uint8_t tt_num_changes; |
144 | uint8_t ttvn; /* translation table version number */ | |
16a70345 | 145 | __be16 tt_crc; |
aa0adb1a | 146 | } __packed; |
c6c8fea2 | 147 | |
96412690 | 148 | #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) |
c6c8fea2 | 149 | |
96412690 SE |
150 | struct batadv_icmp_packet { |
151 | struct batadv_header header; | |
3b27ffb0 | 152 | uint8_t msg_type; /* see ICMP message types above */ |
c1faead3 AQ |
153 | uint8_t dst[ETH_ALEN]; |
154 | uint8_t orig[ETH_ALEN]; | |
3e2f1a1b | 155 | __be16 seqno; |
c6c8fea2 | 156 | uint8_t uid; |
3b27ffb0 | 157 | uint8_t reserved; |
f6c57a46 | 158 | }; |
c6c8fea2 | 159 | |
7e071c79 | 160 | #define BATADV_RR_LEN 16 |
c6c8fea2 SE |
161 | |
162 | /* icmp_packet_rr must start with all fields from imcp_packet | |
9cfc7bd6 SE |
163 | * as this is assumed by code that handles ICMP packets |
164 | */ | |
96412690 SE |
165 | struct batadv_icmp_packet_rr { |
166 | struct batadv_header header; | |
3b27ffb0 | 167 | uint8_t msg_type; /* see ICMP message types above */ |
c1faead3 AQ |
168 | uint8_t dst[ETH_ALEN]; |
169 | uint8_t orig[ETH_ALEN]; | |
3e2f1a1b | 170 | __be16 seqno; |
c6c8fea2 SE |
171 | uint8_t uid; |
172 | uint8_t rr_cur; | |
7e071c79 | 173 | uint8_t rr[BATADV_RR_LEN][ETH_ALEN]; |
f6c57a46 | 174 | }; |
c6c8fea2 | 175 | |
96412690 SE |
176 | struct batadv_unicast_packet { |
177 | struct batadv_header header; | |
a73105b8 | 178 | uint8_t ttvn; /* destination translation table version number */ |
c1faead3 | 179 | uint8_t dest[ETH_ALEN]; |
f6c57a46 SE |
180 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
181 | * following ethernet header again 4 bytes boundary aligned | |
182 | */ | |
183 | }; | |
c6c8fea2 | 184 | |
7cdcf6dd AQ |
185 | /** |
186 | * struct batadv_unicast_4addr_packet - extended unicast packet | |
187 | * @u: common unicast packet header | |
188 | * @src: address of the source | |
189 | * @subtype: packet subtype | |
190 | */ | |
191 | struct batadv_unicast_4addr_packet { | |
192 | struct batadv_unicast_packet u; | |
193 | uint8_t src[ETH_ALEN]; | |
194 | uint8_t subtype; | |
195 | uint8_t reserved; | |
196 | /* "4 bytes boundary + 2 bytes" long to make the payload after the | |
197 | * following ethernet header again 4 bytes boundary aligned | |
198 | */ | |
199 | }; | |
200 | ||
96412690 SE |
201 | struct batadv_unicast_frag_packet { |
202 | struct batadv_header header; | |
a73105b8 | 203 | uint8_t ttvn; /* destination translation table version number */ |
c1faead3 | 204 | uint8_t dest[ETH_ALEN]; |
c6c8fea2 | 205 | uint8_t flags; |
3b27ffb0 | 206 | uint8_t align; |
c1faead3 | 207 | uint8_t orig[ETH_ALEN]; |
3e2f1a1b | 208 | __be16 seqno; |
aa0adb1a | 209 | } __packed; |
c6c8fea2 | 210 | |
96412690 SE |
211 | struct batadv_bcast_packet { |
212 | struct batadv_header header; | |
3b27ffb0 | 213 | uint8_t reserved; |
3e2f1a1b | 214 | __be32 seqno; |
c1faead3 | 215 | uint8_t orig[ETH_ALEN]; |
f6c57a46 SE |
216 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
217 | * following ethernet header again 4 bytes boundary aligned | |
218 | */ | |
aa0adb1a | 219 | } __packed; |
c6c8fea2 | 220 | |
96412690 SE |
221 | struct batadv_vis_packet { |
222 | struct batadv_header header; | |
c6c8fea2 | 223 | uint8_t vis_type; /* which type of vis-participant sent this? */ |
3e2f1a1b | 224 | __be32 seqno; /* sequence number */ |
3b27ffb0 AQ |
225 | uint8_t entries; /* number of entries behind this struct */ |
226 | uint8_t reserved; | |
c1faead3 AQ |
227 | uint8_t vis_orig[ETH_ALEN]; /* originator reporting its neighbors */ |
228 | uint8_t target_orig[ETH_ALEN]; /* who should receive this packet */ | |
229 | uint8_t sender_orig[ETH_ALEN]; /* who sent or forwarded this packet */ | |
f6c57a46 | 230 | }; |
c6c8fea2 | 231 | |
96412690 SE |
232 | struct batadv_tt_query_packet { |
233 | struct batadv_header header; | |
a73105b8 AQ |
234 | /* the flag field is a combination of: |
235 | * - TT_REQUEST or TT_RESPONSE | |
9cfc7bd6 SE |
236 | * - TT_FULL_TABLE |
237 | */ | |
a73105b8 AQ |
238 | uint8_t flags; |
239 | uint8_t dst[ETH_ALEN]; | |
240 | uint8_t src[ETH_ALEN]; | |
241 | /* the ttvn field is: | |
242 | * if TT_REQUEST: ttvn that triggered the | |
243 | * request | |
244 | * if TT_RESPONSE: new ttvn for the src | |
9cfc7bd6 SE |
245 | * orig_node |
246 | */ | |
a73105b8 AQ |
247 | uint8_t ttvn; |
248 | /* tt_data field is: | |
249 | * if TT_REQUEST: crc associated with the | |
250 | * ttvn | |
9cfc7bd6 SE |
251 | * if TT_RESPONSE: table_size |
252 | */ | |
253 | __be16 tt_data; | |
a73105b8 AQ |
254 | } __packed; |
255 | ||
96412690 SE |
256 | struct batadv_roam_adv_packet { |
257 | struct batadv_header header; | |
cc47f66e AQ |
258 | uint8_t reserved; |
259 | uint8_t dst[ETH_ALEN]; | |
260 | uint8_t src[ETH_ALEN]; | |
261 | uint8_t client[ETH_ALEN]; | |
262 | } __packed; | |
263 | ||
96412690 | 264 | struct batadv_tt_change { |
a73105b8 AQ |
265 | uint8_t flags; |
266 | uint8_t addr[ETH_ALEN]; | |
267 | } __packed; | |
268 | ||
c6c8fea2 | 269 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |