| Andrew Lunn | 5beef3c | 2009-11-09 21:20:10 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2007-2009 B.A.T.M.A.N. contributors: |
| 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 | #define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */ |
| 23 | |
| 24 | #define BAT_PACKET 0x01 |
| 25 | #define BAT_ICMP 0x02 |
| 26 | #define BAT_UNICAST 0x03 |
| 27 | #define BAT_BCAST 0x04 |
| 28 | #define BAT_VIS 0x05 |
| 29 | |
| 30 | /* this file is included by batctl which needs these defines */ |
| 31 | #define COMPAT_VERSION 8 |
| 32 | #define DIRECTLINK 0x40 |
| 33 | #define VIS_SERVER 0x20 |
| 34 | |
| 35 | /* ICMP message types */ |
| 36 | #define ECHO_REPLY 0 |
| 37 | #define DESTINATION_UNREACHABLE 3 |
| 38 | #define ECHO_REQUEST 8 |
| 39 | #define TTL_EXCEEDED 11 |
| 40 | #define PARAMETER_PROBLEM 12 |
| 41 | |
| 42 | /* vis defines */ |
| 43 | #define VIS_TYPE_SERVER_SYNC 0 |
| 44 | #define VIS_TYPE_CLIENT_UPDATE 1 |
| 45 | |
| 46 | struct batman_packet { |
| 47 | uint8_t packet_type; |
| 48 | uint8_t version; /* batman version field */ |
| 49 | uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */ |
| 50 | uint8_t tq; |
| 51 | uint16_t seqno; |
| 52 | uint8_t orig[6]; |
| 53 | uint8_t prev_sender[6]; |
| 54 | uint8_t ttl; |
| 55 | uint8_t num_hna; |
| 56 | } __attribute__((packed)); |
| 57 | |
| 58 | #define BAT_PACKET_LEN sizeof(struct batman_packet) |
| 59 | |
| 60 | struct icmp_packet { |
| 61 | uint8_t packet_type; |
| 62 | uint8_t version; /* batman version field */ |
| 63 | uint8_t msg_type; /* see ICMP message types above */ |
| 64 | uint8_t ttl; |
| 65 | uint8_t dst[6]; |
| 66 | uint8_t orig[6]; |
| 67 | uint16_t seqno; |
| 68 | uint8_t uid; |
| 69 | } __attribute__((packed)); |
| 70 | |
| 71 | struct unicast_packet { |
| 72 | uint8_t packet_type; |
| 73 | uint8_t version; /* batman version field */ |
| 74 | uint8_t dest[6]; |
| 75 | uint8_t ttl; |
| 76 | } __attribute__((packed)); |
| 77 | |
| 78 | struct bcast_packet { |
| 79 | uint8_t packet_type; |
| 80 | uint8_t version; /* batman version field */ |
| 81 | uint8_t orig[6]; |
| 82 | uint16_t seqno; |
| 83 | } __attribute__((packed)); |
| 84 | |
| 85 | struct vis_packet { |
| 86 | uint8_t packet_type; |
| 87 | uint8_t version; /* batman version field */ |
| 88 | uint8_t vis_type; /* which type of vis-participant sent this? */ |
| 89 | uint8_t seqno; /* sequence number */ |
| 90 | uint8_t entries; /* number of entries behind this struct */ |
| 91 | uint8_t ttl; /* TTL */ |
| 92 | uint8_t vis_orig[6]; /* originator that informs about its |
| 93 | * neighbours */ |
| 94 | uint8_t target_orig[6]; /* who should receive this packet */ |
| 95 | uint8_t sender_orig[6]; /* who sent or rebroadcasted this packet */ |
| 96 | } __attribute__((packed)); |