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c6c8fea2 | 1 | /* |
64afe353 | 2 | * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner, Simon Wunderlich | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2 of the GNU General Public | |
8 | * License as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
18 | * 02110-1301, USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef _NET_BATMAN_ADV_PACKET_H_ | |
23 | #define _NET_BATMAN_ADV_PACKET_H_ | |
24 | ||
25 | #define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */ | |
26 | ||
27 | #define BAT_PACKET 0x01 | |
28 | #define BAT_ICMP 0x02 | |
29 | #define BAT_UNICAST 0x03 | |
30 | #define BAT_BCAST 0x04 | |
31 | #define BAT_VIS 0x05 | |
32 | #define BAT_UNICAST_FRAG 0x06 | |
33 | ||
34 | /* this file is included by batctl which needs these defines */ | |
35 | #define COMPAT_VERSION 12 | |
36 | #define DIRECTLINK 0x40 | |
37 | #define VIS_SERVER 0x20 | |
38 | #define PRIMARIES_FIRST_HOP 0x10 | |
39 | ||
40 | /* ICMP message types */ | |
41 | #define ECHO_REPLY 0 | |
42 | #define DESTINATION_UNREACHABLE 3 | |
43 | #define ECHO_REQUEST 8 | |
44 | #define TTL_EXCEEDED 11 | |
45 | #define PARAMETER_PROBLEM 12 | |
46 | ||
47 | /* vis defines */ | |
48 | #define VIS_TYPE_SERVER_SYNC 0 | |
49 | #define VIS_TYPE_CLIENT_UPDATE 1 | |
50 | ||
51 | /* fragmentation defines */ | |
52 | #define UNI_FRAG_HEAD 0x01 | |
ae361ce1 | 53 | #define UNI_FRAG_LARGETAIL 0x02 |
c6c8fea2 SE |
54 | |
55 | struct batman_packet { | |
56 | uint8_t packet_type; | |
57 | uint8_t version; /* batman version field */ | |
58 | uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */ | |
59 | uint8_t tq; | |
60 | uint32_t seqno; | |
61 | uint8_t orig[6]; | |
62 | uint8_t prev_sender[6]; | |
63 | uint8_t ttl; | |
2dafb49d | 64 | uint8_t num_tt; |
c6c8fea2 SE |
65 | uint8_t gw_flags; /* flags related to gateway class */ |
66 | uint8_t align; | |
aa0adb1a | 67 | } __packed; |
c6c8fea2 SE |
68 | |
69 | #define BAT_PACKET_LEN sizeof(struct batman_packet) | |
70 | ||
71 | struct icmp_packet { | |
72 | uint8_t packet_type; | |
73 | uint8_t version; /* batman version field */ | |
74 | uint8_t msg_type; /* see ICMP message types above */ | |
75 | uint8_t ttl; | |
76 | uint8_t dst[6]; | |
77 | uint8_t orig[6]; | |
78 | uint16_t seqno; | |
79 | uint8_t uid; | |
aa0adb1a | 80 | } __packed; |
c6c8fea2 SE |
81 | |
82 | #define BAT_RR_LEN 16 | |
83 | ||
84 | /* icmp_packet_rr must start with all fields from imcp_packet | |
85 | * as this is assumed by code that handles ICMP packets */ | |
86 | struct icmp_packet_rr { | |
87 | uint8_t packet_type; | |
88 | uint8_t version; /* batman version field */ | |
89 | uint8_t msg_type; /* see ICMP message types above */ | |
90 | uint8_t ttl; | |
91 | uint8_t dst[6]; | |
92 | uint8_t orig[6]; | |
93 | uint16_t seqno; | |
94 | uint8_t uid; | |
95 | uint8_t rr_cur; | |
96 | uint8_t rr[BAT_RR_LEN][ETH_ALEN]; | |
aa0adb1a | 97 | } __packed; |
c6c8fea2 SE |
98 | |
99 | struct unicast_packet { | |
100 | uint8_t packet_type; | |
101 | uint8_t version; /* batman version field */ | |
102 | uint8_t dest[6]; | |
103 | uint8_t ttl; | |
aa0adb1a | 104 | } __packed; |
c6c8fea2 SE |
105 | |
106 | struct unicast_frag_packet { | |
107 | uint8_t packet_type; | |
108 | uint8_t version; /* batman version field */ | |
109 | uint8_t dest[6]; | |
110 | uint8_t ttl; | |
111 | uint8_t flags; | |
112 | uint8_t orig[6]; | |
113 | uint16_t seqno; | |
aa0adb1a | 114 | } __packed; |
c6c8fea2 SE |
115 | |
116 | struct bcast_packet { | |
117 | uint8_t packet_type; | |
118 | uint8_t version; /* batman version field */ | |
119 | uint8_t orig[6]; | |
120 | uint8_t ttl; | |
121 | uint32_t seqno; | |
aa0adb1a | 122 | } __packed; |
c6c8fea2 SE |
123 | |
124 | struct vis_packet { | |
125 | uint8_t packet_type; | |
126 | uint8_t version; /* batman version field */ | |
127 | uint8_t vis_type; /* which type of vis-participant sent this? */ | |
128 | uint8_t entries; /* number of entries behind this struct */ | |
129 | uint32_t seqno; /* sequence number */ | |
130 | uint8_t ttl; /* TTL */ | |
6e215fd8 | 131 | uint8_t vis_orig[6]; /* originator that announces its neighbors */ |
c6c8fea2 SE |
132 | uint8_t target_orig[6]; /* who should receive this packet */ |
133 | uint8_t sender_orig[6]; /* who sent or rebroadcasted this packet */ | |
aa0adb1a | 134 | } __packed; |
c6c8fea2 SE |
135 | |
136 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |