1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*/
#ifndef _NET_BATMAN_ADV_PACKET_H_
#define _NET_BATMAN_ADV_PACKET_H_
#define BATADV_ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */
enum batadv_packettype {
BATADV_IV_OGM = 0x01,
BATADV_ICMP = 0x02,
BATADV_UNICAST = 0x03,
BATADV_BCAST = 0x04,
BATADV_VIS = 0x05,
BATADV_UNICAST_FRAG = 0x06,
BATADV_TT_QUERY = 0x07,
BATADV_ROAM_ADV = 0x08,
};
/* this file is included by batctl which needs these defines */
#define BATADV_COMPAT_VERSION 14
enum batadv_iv_flags {
BATADV_NOT_BEST_NEXT_HOP = 1 << 3,
BATADV_PRIMARIES_FIRST_HOP = 1 << 4,
BATADV_VIS_SERVER = 1 << 5,
BATADV_DIRECTLINK = 1 << 6,
};
/* ICMP message types */
enum batadv_icmp_packettype {
BATADV_ECHO_REPLY = 0,
BATADV_DESTINATION_UNREACHABLE = 3,
BATADV_ECHO_REQUEST = 8,
BATADV_TTL_EXCEEDED = 11,
BATADV_PARAMETER_PROBLEM = 12,
};
/* vis defines */
enum batadv_vis_packettype {
BATADV_VIS_TYPE_SERVER_SYNC = 0,
BATADV_VIS_TYPE_CLIENT_UPDATE = 1,
};
/* fragmentation defines */
enum batadv_unicast_frag_flags {
BATADV_UNI_FRAG_HEAD = 1 << 0,
BATADV_UNI_FRAG_LARGETAIL = 1 << 1,
};
/* TT_QUERY subtypes */
#define BATADV_TT_QUERY_TYPE_MASK 0x3
enum batadv_tt_query_packettype {
BATADV_TT_REQUEST = 0,
BATADV_TT_RESPONSE = 1,
};
/* TT_QUERY flags */
enum batadv_tt_query_flags {
BATADV_TT_FULL_TABLE = 1 << 2,
};
/* BATADV_TT_CLIENT flags.
* Flags from 1 to 1 << 7 are sent on the wire, while flags from 1 << 8 to
* 1 << 15 are used for local computation only
*/
enum batadv_tt_client_flags {
BATADV_TT_CLIENT_DEL = 1 << 0,
BATADV_TT_CLIENT_ROAM = 1 << 1,
BATADV_TT_CLIENT_WIFI = 1 << 2,
BATADV_TT_CLIENT_NOPURGE = 1 << 8,
BATADV_TT_CLIENT_NEW = 1 << 9,
BATADV_TT_CLIENT_PENDING = 1 << 10,
};
/* claim frame types for the bridge loop avoidance */
enum batadv_bla_claimframe {
BATADV_CLAIM_TYPE_ADD = 0x00,
BATADV_CLAIM_TYPE_DEL = 0x01,
BATADV_CLAIM_TYPE_ANNOUNCE = 0x02,
BATADV_CLAIM_TYPE_REQUEST = 0x03,
};
/* the destination hardware field in the ARP frame is used to
* transport the claim type and the group id
*/
struct bla_claim_dst {
uint8_t magic[3]; /* FF:43:05 */
uint8_t type; /* bla_claimframe */
__be16 group; /* group id */
} __packed;
struct batman_header {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
} __packed;
struct batman_ogm_packet {
struct batman_header header;
uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
__be32 seqno;
uint8_t orig[ETH_ALEN];
uint8_t prev_sender[ETH_ALEN];
uint8_t gw_flags; /* flags related to gateway class */
uint8_t tq;
uint8_t tt_num_changes;
uint8_t ttvn; /* translation table version number */
__be16 tt_crc;
} __packed;
#define BATADV_OGM_HLEN sizeof(struct batman_ogm_packet)
struct icmp_packet {
struct batman_header header;
uint8_t msg_type; /* see ICMP message types above */
uint8_t dst[ETH_ALEN];
uint8_t orig[ETH_ALEN];
__be16 seqno;
uint8_t uid;
uint8_t reserved;
} __packed;
#define BATADV_RR_LEN 16
/* icmp_packet_rr must start with all fields from imcp_packet
* as this is assumed by code that handles ICMP packets
*/
struct icmp_packet_rr {
struct batman_header header;
uint8_t msg_type; /* see ICMP message types above */
uint8_t dst[ETH_ALEN];
uint8_t orig[ETH_ALEN];
__be16 seqno;
uint8_t uid;
uint8_t rr_cur;
uint8_t rr[BATADV_RR_LEN][ETH_ALEN];
} __packed;
struct unicast_packet {
struct batman_header header;
uint8_t ttvn; /* destination translation table version number */
uint8_t dest[ETH_ALEN];
} __packed;
struct unicast_frag_packet {
struct batman_header header;
uint8_t ttvn; /* destination translation table version number */
uint8_t dest[ETH_ALEN];
uint8_t flags;
uint8_t align;
uint8_t orig[ETH_ALEN];
__be16 seqno;
} __packed;
struct bcast_packet {
struct batman_header header;
uint8_t reserved;
__be32 seqno;
uint8_t orig[ETH_ALEN];
} __packed;
struct vis_packet {
struct batman_header header;
uint8_t vis_type; /* which type of vis-participant sent this? */
__be32 seqno; /* sequence number */
uint8_t entries; /* number of entries behind this struct */
uint8_t reserved;
uint8_t vis_orig[ETH_ALEN]; /* originator reporting its neighbors */
uint8_t target_orig[ETH_ALEN]; /* who should receive this packet */
uint8_t sender_orig[ETH_ALEN]; /* who sent or forwarded this packet */
} __packed;
struct tt_query_packet {
struct batman_header header;
/* the flag field is a combination of:
* - TT_REQUEST or TT_RESPONSE
* - TT_FULL_TABLE
*/
uint8_t flags;
uint8_t dst[ETH_ALEN];
uint8_t src[ETH_ALEN];
/* the ttvn field is:
* if TT_REQUEST: ttvn that triggered the
* request
* if TT_RESPONSE: new ttvn for the src
* orig_node
*/
uint8_t ttvn;
/* tt_data field is:
* if TT_REQUEST: crc associated with the
* ttvn
* if TT_RESPONSE: table_size
*/
__be16 tt_data;
} __packed;
struct roam_adv_packet {
struct batman_header header;
uint8_t reserved;
uint8_t dst[ETH_ALEN];
uint8_t src[ETH_ALEN];
uint8_t client[ETH_ALEN];
} __packed;
struct tt_change {
uint8_t flags;
uint8_t addr[ETH_ALEN];
} __packed;
#endif /* _NET_BATMAN_ADV_PACKET_H_ */
|
