| /* |
| * 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_ */ |