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
|
/*
* Copyright (C) 2007-2011 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 ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */
enum bat_packettype {
BAT_PACKET = 0x01,
BAT_ICMP = 0x02,
BAT_UNICAST = 0x03,
BAT_BCAST = 0x04,
BAT_VIS = 0x05,
BAT_UNICAST_FRAG = 0x06
};
/* this file is included by batctl which needs these defines */
#define COMPAT_VERSION 14
enum batman_flags {
PRIMARIES_FIRST_HOP = 1 << 4,
VIS_SERVER = 1 << 5,
DIRECTLINK = 1 << 6
};
/* ICMP message types */
enum icmp_packettype {
ECHO_REPLY = 0,
DESTINATION_UNREACHABLE = 3,
ECHO_REQUEST = 8,
TTL_EXCEEDED = 11,
PARAMETER_PROBLEM = 12
};
/* vis defines */
enum vis_packettype {
VIS_TYPE_SERVER_SYNC = 0,
VIS_TYPE_CLIENT_UPDATE = 1
};
/* fragmentation defines */
enum unicast_frag_flags {
UNI_FRAG_HEAD = 1 << 0,
UNI_FRAG_LARGETAIL = 1 << 1
};
struct batman_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
uint32_t seqno;
uint8_t orig[6];
uint8_t prev_sender[6];
uint8_t gw_flags; /* flags related to gateway class */
uint8_t tq;
uint8_t num_tt;
uint8_t reserved;
} __packed;
#define BAT_PACKET_LEN sizeof(struct batman_packet)
struct icmp_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
uint8_t msg_type; /* see ICMP message types above */
uint8_t dst[6];
uint8_t orig[6];
uint16_t seqno;
uint8_t uid;
uint8_t reserved;
} __packed;
#define BAT_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 {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
uint8_t msg_type; /* see ICMP message types above */
uint8_t dst[6];
uint8_t orig[6];
uint16_t seqno;
uint8_t uid;
uint8_t rr_cur;
uint8_t rr[BAT_RR_LEN][ETH_ALEN];
} __packed;
struct unicast_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
uint8_t reserved;
uint8_t dest[6];
} __packed;
struct unicast_frag_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
uint8_t reserved;
uint8_t dest[6];
uint8_t flags;
uint8_t align;
uint8_t orig[6];
uint16_t seqno;
} __packed;
struct bcast_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
uint8_t reserved;
uint32_t seqno;
uint8_t orig[6];
} __packed;
struct vis_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl; /* TTL */
uint8_t vis_type; /* which type of vis-participant sent this? */
uint32_t seqno; /* sequence number */
uint8_t entries; /* number of entries behind this struct */
uint8_t reserved;
uint8_t vis_orig[6]; /* originator that announces its neighbors */
uint8_t target_orig[6]; /* who should receive this packet */
uint8_t sender_orig[6]; /* who sent or rebroadcasted this packet */
} __packed;
#endif /* _NET_BATMAN_ADV_PACKET_H_ */
|
