Antonio Quartulli | 0b87393 | 2013-01-04 03:05:31 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 2 | * |
| 3 | * Marek Lindner, Simon Wunderlich |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of version 2 of the GNU General Public |
| 7 | * License as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 17 | * 02110-1301, USA |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | #ifndef _NET_BATMAN_ADV_PACKET_H_ |
| 21 | #define _NET_BATMAN_ADV_PACKET_H_ |
| 22 | |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 23 | /** |
| 24 | * enum batadv_packettype - types for batman-adv encapsulated packets |
Simon Wunderlich | a1f1ac5 | 2013-04-25 10:37:23 +0200 | [diff] [blame] | 25 | * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV |
| 26 | * @BATADV_BCAST: broadcast packets carrying broadcast payload |
| 27 | * @BATADV_CODED: network coded packets |
| 28 | * |
| 29 | * @BATADV_UNICAST: unicast packets carrying unicast payload traffic |
| 30 | * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original |
| 31 | * payload packet |
| 32 | * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of |
| 33 | * the sender |
| 34 | * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 35 | * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers |
| 36 | */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 37 | enum batadv_packettype { |
Simon Wunderlich | a1f1ac5 | 2013-04-25 10:37:23 +0200 | [diff] [blame] | 38 | /* 0x00 - 0x3f: local packets or special rules for handling */ |
| 39 | BATADV_IV_OGM = 0x00, |
| 40 | BATADV_BCAST = 0x01, |
| 41 | BATADV_CODED = 0x02, |
| 42 | /* 0x40 - 0x7f: unicast */ |
| 43 | #define BATADV_UNICAST_MIN 0x40 |
| 44 | BATADV_UNICAST = 0x40, |
| 45 | BATADV_UNICAST_FRAG = 0x41, |
| 46 | BATADV_UNICAST_4ADDR = 0x42, |
| 47 | BATADV_ICMP = 0x43, |
| 48 | BATADV_UNICAST_TVLV = 0x44, |
| 49 | #define BATADV_UNICAST_MAX 0x7f |
| 50 | /* 0x80 - 0xff: reserved */ |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 51 | }; |
| 52 | |
| 53 | /** |
| 54 | * enum batadv_subtype - packet subtype for unicast4addr |
| 55 | * @BATADV_P_DATA: user payload |
Antonio Quartulli | 5c3a0e5 | 2011-06-02 12:29:51 +0200 | [diff] [blame] | 56 | * @BATADV_P_DAT_DHT_GET: DHT request message |
| 57 | * @BATADV_P_DAT_DHT_PUT: DHT store message |
| 58 | * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 59 | */ |
| 60 | enum batadv_subtype { |
Antonio Quartulli | 5c3a0e5 | 2011-06-02 12:29:51 +0200 | [diff] [blame] | 61 | BATADV_P_DATA = 0x01, |
| 62 | BATADV_P_DAT_DHT_GET = 0x02, |
| 63 | BATADV_P_DAT_DHT_PUT = 0x03, |
| 64 | BATADV_P_DAT_CACHE_REPLY = 0x04, |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 65 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 66 | |
| 67 | /* this file is included by batctl which needs these defines */ |
Antonio Quartulli | 60cf798 | 2013-04-20 15:59:13 +0200 | [diff] [blame] | 68 | #define BATADV_COMPAT_VERSION 15 |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 69 | |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 70 | /** |
| 71 | * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets |
| 72 | * @BATADV_NOT_BEST_NEXT_HOP: flag is set when ogm packet is forwarded and was |
| 73 | * previously received from someone else than the best neighbor. |
| 74 | * @BATADV_PRIMARIES_FIRST_HOP: flag is set when the primary interface address |
| 75 | * is used, and the packet travels its first hop. |
| 76 | * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a |
| 77 | * one hop neighbor on the interface where it was originally received. |
| 78 | */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 79 | enum batadv_iv_flags { |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 80 | BATADV_NOT_BEST_NEXT_HOP = BIT(0), |
| 81 | BATADV_PRIMARIES_FIRST_HOP = BIT(1), |
| 82 | BATADV_DIRECTLINK = BIT(2), |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 83 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 84 | |
| 85 | /* ICMP message types */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 86 | enum batadv_icmp_packettype { |
| 87 | BATADV_ECHO_REPLY = 0, |
| 88 | BATADV_DESTINATION_UNREACHABLE = 3, |
| 89 | BATADV_ECHO_REQUEST = 8, |
| 90 | BATADV_TTL_EXCEEDED = 11, |
| 91 | BATADV_PARAMETER_PROBLEM = 12, |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 92 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 93 | |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 94 | /* tt data subtypes */ |
| 95 | #define BATADV_TT_DATA_TYPE_MASK 0x0F |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 96 | |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 97 | /** |
| 98 | * enum batadv_tt_data_flags - flags for tt data tvlv |
| 99 | * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM |
| 100 | * @BATADV_TT_REQUEST: TT request message |
| 101 | * @BATADV_TT_RESPONSE: TT response message |
| 102 | * @BATADV_TT_FULL_TABLE: contains full table to replace existing table |
| 103 | */ |
| 104 | enum batadv_tt_data_flags { |
| 105 | BATADV_TT_OGM_DIFF = BIT(0), |
| 106 | BATADV_TT_REQUEST = BIT(1), |
| 107 | BATADV_TT_RESPONSE = BIT(2), |
| 108 | BATADV_TT_FULL_TABLE = BIT(4), |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 109 | }; |
| 110 | |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 111 | /* BATADV_TT_CLIENT flags. |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 112 | * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to |
Antonio Quartulli | 0eb01568 | 2013-10-13 02:50:20 +0200 | [diff] [blame] | 113 | * BIT(15) are used for local computation only. |
| 114 | * Flags from BIT(4) to BIT(7) are kept in sync with the rest of the network. |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 115 | */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 116 | enum batadv_tt_client_flags { |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 117 | BATADV_TT_CLIENT_DEL = BIT(0), |
| 118 | BATADV_TT_CLIENT_ROAM = BIT(1), |
Antonio Quartulli | 0eb01568 | 2013-10-13 02:50:20 +0200 | [diff] [blame] | 119 | BATADV_TT_CLIENT_WIFI = BIT(4), |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 120 | BATADV_TT_CLIENT_NOPURGE = BIT(8), |
| 121 | BATADV_TT_CLIENT_NEW = BIT(9), |
| 122 | BATADV_TT_CLIENT_PENDING = BIT(10), |
Antonio Quartulli | 0035f97 | 2013-04-24 16:37:52 +0200 | [diff] [blame] | 123 | BATADV_TT_CLIENT_TEMP = BIT(11), |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 124 | }; |
| 125 | |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 126 | /** |
| 127 | * batadv_vlan_flags - flags for the four MSB of any vlan ID field |
| 128 | * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not |
| 129 | */ |
| 130 | enum batadv_vlan_flags { |
| 131 | BATADV_VLAN_HAS_TAG = BIT(15), |
| 132 | }; |
| 133 | |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 134 | /* claim frame types for the bridge loop avoidance */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 135 | enum batadv_bla_claimframe { |
Simon Wunderlich | 3eb8773 | 2012-06-23 12:34:18 +0200 | [diff] [blame] | 136 | BATADV_CLAIM_TYPE_CLAIM = 0x00, |
| 137 | BATADV_CLAIM_TYPE_UNCLAIM = 0x01, |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 138 | BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, |
| 139 | BATADV_CLAIM_TYPE_REQUEST = 0x03, |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 140 | }; |
| 141 | |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 142 | /** |
| 143 | * enum batadv_tvlv_type - tvlv type definitions |
| 144 | * @BATADV_TVLV_GW: gateway tvlv |
Marek Lindner | 17cf0ea | 2013-04-23 21:39:59 +0800 | [diff] [blame] | 145 | * @BATADV_TVLV_DAT: distributed arp table tvlv |
Marek Lindner | 3f4841f | 2013-04-23 21:40:00 +0800 | [diff] [blame] | 146 | * @BATADV_TVLV_NC: network coding tvlv |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 147 | * @BATADV_TVLV_TT: translation table tvlv |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 148 | * @BATADV_TVLV_ROAM: roaming advertisement tvlv |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 149 | */ |
| 150 | enum batadv_tvlv_type { |
| 151 | BATADV_TVLV_GW = 0x01, |
Marek Lindner | 17cf0ea | 2013-04-23 21:39:59 +0800 | [diff] [blame] | 152 | BATADV_TVLV_DAT = 0x02, |
Marek Lindner | 3f4841f | 2013-04-23 21:40:00 +0800 | [diff] [blame] | 153 | BATADV_TVLV_NC = 0x03, |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 154 | BATADV_TVLV_TT = 0x04, |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 155 | BATADV_TVLV_ROAM = 0x05, |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 156 | }; |
| 157 | |
Simon Wunderlich | 2f7a318 | 2013-12-02 20:38:33 +0100 | [diff] [blame] | 158 | #pragma pack(2) |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 159 | /* the destination hardware field in the ARP frame is used to |
| 160 | * transport the claim type and the group id |
| 161 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 162 | struct batadv_bla_claim_dst { |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 163 | uint8_t magic[3]; /* FF:43:05 */ |
| 164 | uint8_t type; /* bla_claimframe */ |
Al Viro | 3e2f1a1 | 2012-04-22 07:47:50 +0100 | [diff] [blame] | 165 | __be16 group; /* group id */ |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 166 | }; |
Simon Wunderlich | 2f7a318 | 2013-12-02 20:38:33 +0100 | [diff] [blame] | 167 | #pragma pack() |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 168 | |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 169 | /** |
| 170 | * struct batadv_ogm_packet - ogm (routing protocol) packet |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 171 | * @packet_type: batman-adv packet type, part of the general header |
| 172 | * @version: batman-adv protocol version, part of the genereal header |
| 173 | * @ttl: time to live for this packet, part of the genereal header |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 174 | * @flags: contains routing relevant flags - see enum batadv_iv_flags |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 175 | * @tvlv_len: length of tvlv data following the ogm header |
| 176 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 177 | struct batadv_ogm_packet { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 178 | uint8_t packet_type; |
| 179 | uint8_t version; |
| 180 | uint8_t ttl; |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 181 | uint8_t flags; |
Al Viro | e0f5211 | 2012-04-22 07:46:29 +0100 | [diff] [blame] | 182 | __be32 seqno; |
Antonio Quartulli | c1faead | 2012-01-30 20:59:17 +0100 | [diff] [blame] | 183 | uint8_t orig[ETH_ALEN]; |
| 184 | uint8_t prev_sender[ETH_ALEN]; |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 185 | uint8_t reserved; |
Antonio Quartulli | 3b27ffb | 2011-05-28 14:51:06 +0200 | [diff] [blame] | 186 | uint8_t tq; |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 187 | __be16 tvlv_len; |
Simon Wunderlich | 9284a47 | 2013-04-25 10:37:24 +0200 | [diff] [blame] | 188 | /* __packed is not needed as the struct size is divisible by 4, |
| 189 | * and the largest data type in this struct has a size of 4. |
| 190 | */ |
| 191 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 192 | |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 193 | #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 194 | |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 195 | /** |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 196 | * batadv_icmp_header - common members among all the ICMP packets |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 197 | * @packet_type: batman-adv packet type, part of the general header |
| 198 | * @version: batman-adv protocol version, part of the genereal header |
| 199 | * @ttl: time to live for this packet, part of the genereal header |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 200 | * @msg_type: ICMP packet type |
| 201 | * @dst: address of the destination node |
| 202 | * @orig: address of the source node |
| 203 | * @uid: local ICMP socket identifier |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 204 | * @align: not used - useful for alignment purposes only |
| 205 | * |
| 206 | * This structure is used for ICMP packets parsing only and it is never sent |
| 207 | * over the wire. The alignment field at the end is there to ensure that |
| 208 | * members are padded the same way as they are in real packets. |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 209 | */ |
| 210 | struct batadv_icmp_header { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 211 | uint8_t packet_type; |
| 212 | uint8_t version; |
| 213 | uint8_t ttl; |
Antonio Quartulli | 3b27ffb | 2011-05-28 14:51:06 +0200 | [diff] [blame] | 214 | uint8_t msg_type; /* see ICMP message types above */ |
Antonio Quartulli | c1faead | 2012-01-30 20:59:17 +0100 | [diff] [blame] | 215 | uint8_t dst[ETH_ALEN]; |
| 216 | uint8_t orig[ETH_ALEN]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 217 | uint8_t uid; |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 218 | uint8_t align[3]; |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 219 | }; |
| 220 | |
| 221 | /** |
| 222 | * batadv_icmp_packet - ICMP packet |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 223 | * @packet_type: batman-adv packet type, part of the general header |
| 224 | * @version: batman-adv protocol version, part of the genereal header |
| 225 | * @ttl: time to live for this packet, part of the genereal header |
| 226 | * @msg_type: ICMP packet type |
| 227 | * @dst: address of the destination node |
| 228 | * @orig: address of the source node |
| 229 | * @uid: local ICMP socket identifier |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 230 | * @reserved: not used - useful for alignment |
| 231 | * @seqno: ICMP sequence number |
| 232 | */ |
| 233 | struct batadv_icmp_packet { |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 234 | uint8_t packet_type; |
| 235 | uint8_t version; |
| 236 | uint8_t ttl; |
| 237 | uint8_t msg_type; /* see ICMP message types above */ |
| 238 | uint8_t dst[ETH_ALEN]; |
| 239 | uint8_t orig[ETH_ALEN]; |
| 240 | uint8_t uid; |
Antonio Quartulli | 3b27ffb | 2011-05-28 14:51:06 +0200 | [diff] [blame] | 241 | uint8_t reserved; |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 242 | __be16 seqno; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 243 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 244 | |
Sven Eckelmann | 7e071c7 | 2012-06-03 22:19:13 +0200 | [diff] [blame] | 245 | #define BATADV_RR_LEN 16 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 246 | |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 247 | /** |
| 248 | * batadv_icmp_packet_rr - ICMP RouteRecord packet |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 249 | * @packet_type: batman-adv packet type, part of the general header |
| 250 | * @version: batman-adv protocol version, part of the genereal header |
| 251 | * @ttl: time to live for this packet, part of the genereal header |
| 252 | * @msg_type: ICMP packet type |
| 253 | * @dst: address of the destination node |
| 254 | * @orig: address of the source node |
| 255 | * @uid: local ICMP socket identifier |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 256 | * @rr_cur: number of entries the rr array |
| 257 | * @seqno: ICMP sequence number |
| 258 | * @rr: route record array |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 259 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 260 | struct batadv_icmp_packet_rr { |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 261 | uint8_t packet_type; |
| 262 | uint8_t version; |
| 263 | uint8_t ttl; |
| 264 | uint8_t msg_type; /* see ICMP message types above */ |
| 265 | uint8_t dst[ETH_ALEN]; |
| 266 | uint8_t orig[ETH_ALEN]; |
| 267 | uint8_t uid; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 268 | uint8_t rr_cur; |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 269 | __be16 seqno; |
Sven Eckelmann | 7e071c7 | 2012-06-03 22:19:13 +0200 | [diff] [blame] | 270 | uint8_t rr[BATADV_RR_LEN][ETH_ALEN]; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 271 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 272 | |
Simon Wunderlich | da6b8c2 | 2013-10-22 22:50:09 +0200 | [diff] [blame] | 273 | #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) |
| 274 | |
Sven Eckelmann | e022b95 | 2012-11-05 21:25:27 +0100 | [diff] [blame] | 275 | /* All packet headers in front of an ethernet header have to be completely |
| 276 | * divisible by 2 but not by 4 to make the payload after the ethernet |
| 277 | * header again 4 bytes boundary aligned. |
| 278 | * |
| 279 | * A packing of 2 is necessary to avoid extra padding at the end of the struct |
| 280 | * caused by a structure member which is larger than two bytes. Otherwise |
| 281 | * the structure would not fulfill the previously mentioned rule to avoid the |
| 282 | * misalignment of the payload after the ethernet header. It may also lead to |
| 283 | * leakage of information when the padding it not initialized before sending. |
| 284 | */ |
| 285 | #pragma pack(2) |
| 286 | |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 287 | /** |
| 288 | * struct batadv_unicast_packet - unicast packet for network payload |
| 289 | * @packet_type: batman-adv packet type, part of the general header |
| 290 | * @version: batman-adv protocol version, part of the genereal header |
| 291 | * @ttl: time to live for this packet, part of the genereal header |
| 292 | * @ttvn: translation table version number |
| 293 | * @dest: originator destination of the unicast packet |
| 294 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 295 | struct batadv_unicast_packet { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 296 | uint8_t packet_type; |
| 297 | uint8_t version; |
| 298 | uint8_t ttl; |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 299 | uint8_t ttvn; /* destination translation table version number */ |
Antonio Quartulli | c1faead | 2012-01-30 20:59:17 +0100 | [diff] [blame] | 300 | uint8_t dest[ETH_ALEN]; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 301 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
| 302 | * following ethernet header again 4 bytes boundary aligned |
| 303 | */ |
| 304 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 305 | |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 306 | /** |
| 307 | * struct batadv_unicast_4addr_packet - extended unicast packet |
| 308 | * @u: common unicast packet header |
| 309 | * @src: address of the source |
| 310 | * @subtype: packet subtype |
| 311 | */ |
| 312 | struct batadv_unicast_4addr_packet { |
| 313 | struct batadv_unicast_packet u; |
| 314 | uint8_t src[ETH_ALEN]; |
| 315 | uint8_t subtype; |
| 316 | uint8_t reserved; |
| 317 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
| 318 | * following ethernet header again 4 bytes boundary aligned |
| 319 | */ |
| 320 | }; |
| 321 | |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 322 | /** |
| 323 | * struct batadv_frag_packet - fragmented packet |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 324 | * @packet_type: batman-adv packet type, part of the general header |
| 325 | * @version: batman-adv protocol version, part of the genereal header |
| 326 | * @ttl: time to live for this packet, part of the genereal header |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 327 | * @dest: final destination used when routing fragments |
| 328 | * @orig: originator of the fragment used when merging the packet |
| 329 | * @no: fragment number within this sequence |
| 330 | * @reserved: reserved byte for alignment |
| 331 | * @seqno: sequence identification |
| 332 | * @total_size: size of the merged packet |
| 333 | */ |
| 334 | struct batadv_frag_packet { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 335 | uint8_t packet_type; |
| 336 | uint8_t version; /* batman version field */ |
| 337 | uint8_t ttl; |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 338 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 339 | uint8_t no:4; |
| 340 | uint8_t reserved:4; |
| 341 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| 342 | uint8_t reserved:4; |
| 343 | uint8_t no:4; |
| 344 | #else |
| 345 | #error "unknown bitfield endianess" |
| 346 | #endif |
| 347 | uint8_t dest[ETH_ALEN]; |
| 348 | uint8_t orig[ETH_ALEN]; |
| 349 | __be16 seqno; |
| 350 | __be16 total_size; |
| 351 | }; |
| 352 | |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 353 | /** |
| 354 | * struct batadv_bcast_packet - broadcast packet for network payload |
| 355 | * @packet_type: batman-adv packet type, part of the general header |
| 356 | * @version: batman-adv protocol version, part of the genereal header |
| 357 | * @ttl: time to live for this packet, part of the genereal header |
| 358 | * @reserved: reserved byte for alignment |
| 359 | * @seqno: sequence identification |
| 360 | * @orig: originator of the broadcast packet |
| 361 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 362 | struct batadv_bcast_packet { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 363 | uint8_t packet_type; |
| 364 | uint8_t version; /* batman version field */ |
| 365 | uint8_t ttl; |
Antonio Quartulli | 3b27ffb | 2011-05-28 14:51:06 +0200 | [diff] [blame] | 366 | uint8_t reserved; |
Al Viro | 3e2f1a1 | 2012-04-22 07:47:50 +0100 | [diff] [blame] | 367 | __be32 seqno; |
Antonio Quartulli | c1faead | 2012-01-30 20:59:17 +0100 | [diff] [blame] | 368 | uint8_t orig[ETH_ALEN]; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 369 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
| 370 | * following ethernet header again 4 bytes boundary aligned |
| 371 | */ |
Sven Eckelmann | e022b95 | 2012-11-05 21:25:27 +0100 | [diff] [blame] | 372 | }; |
| 373 | |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 374 | /** |
| 375 | * struct batadv_coded_packet - network coded packet |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 376 | * @packet_type: batman-adv packet type, part of the general header |
| 377 | * @version: batman-adv protocol version, part of the genereal header |
| 378 | * @ttl: time to live for this packet, part of the genereal header |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 379 | * @reserved: Align following fields to 2-byte boundaries |
| 380 | * @first_source: original source of first included packet |
| 381 | * @first_orig_dest: original destinal of first included packet |
| 382 | * @first_crc: checksum of first included packet |
| 383 | * @first_ttvn: tt-version number of first included packet |
| 384 | * @second_ttl: ttl of second packet |
| 385 | * @second_dest: second receiver of this coded packet |
| 386 | * @second_source: original source of second included packet |
| 387 | * @second_orig_dest: original destination of second included packet |
| 388 | * @second_crc: checksum of second included packet |
| 389 | * @second_ttvn: tt version number of second included packet |
| 390 | * @coded_len: length of network coded part of the payload |
| 391 | */ |
| 392 | struct batadv_coded_packet { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 393 | uint8_t packet_type; |
| 394 | uint8_t version; /* batman version field */ |
| 395 | uint8_t ttl; |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 396 | uint8_t first_ttvn; |
| 397 | /* uint8_t first_dest[ETH_ALEN]; - saved in mac header destination */ |
| 398 | uint8_t first_source[ETH_ALEN]; |
| 399 | uint8_t first_orig_dest[ETH_ALEN]; |
| 400 | __be32 first_crc; |
| 401 | uint8_t second_ttl; |
| 402 | uint8_t second_ttvn; |
| 403 | uint8_t second_dest[ETH_ALEN]; |
| 404 | uint8_t second_source[ETH_ALEN]; |
| 405 | uint8_t second_orig_dest[ETH_ALEN]; |
| 406 | __be32 second_crc; |
Martin Hundebøll | e6a0b49 | 2013-03-14 21:30:21 +0100 | [diff] [blame] | 407 | __be16 coded_len; |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 408 | }; |
| 409 | |
Simon Wunderlich | 46b76e0 | 2013-12-02 20:38:30 +0100 | [diff] [blame] | 410 | #pragma pack() |
| 411 | |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 412 | /** |
| 413 | * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 414 | * @packet_type: batman-adv packet type, part of the general header |
| 415 | * @version: batman-adv protocol version, part of the genereal header |
| 416 | * @ttl: time to live for this packet, part of the genereal header |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 417 | * @reserved: reserved field (for packet alignment) |
| 418 | * @src: address of the source |
| 419 | * @dst: address of the destination |
| 420 | * @tvlv_len: length of tvlv data following the unicast tvlv header |
| 421 | * @align: 2 bytes to align the header to a 4 byte boundry |
| 422 | */ |
| 423 | struct batadv_unicast_tvlv_packet { |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 424 | uint8_t packet_type; |
| 425 | uint8_t version; /* batman version field */ |
| 426 | uint8_t ttl; |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 427 | uint8_t reserved; |
| 428 | uint8_t dst[ETH_ALEN]; |
| 429 | uint8_t src[ETH_ALEN]; |
| 430 | __be16 tvlv_len; |
| 431 | uint16_t align; |
| 432 | }; |
| 433 | |
| 434 | /** |
| 435 | * struct batadv_tvlv_hdr - base tvlv header struct |
| 436 | * @type: tvlv container type (see batadv_tvlv_type) |
| 437 | * @version: tvlv container version |
| 438 | * @len: tvlv container length |
| 439 | */ |
| 440 | struct batadv_tvlv_hdr { |
| 441 | uint8_t type; |
| 442 | uint8_t version; |
| 443 | __be16 len; |
| 444 | }; |
| 445 | |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 446 | /** |
| 447 | * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv |
| 448 | * container |
| 449 | * @bandwidth_down: advertised uplink download bandwidth |
| 450 | * @bandwidth_up: advertised uplink upload bandwidth |
| 451 | */ |
| 452 | struct batadv_tvlv_gateway_data { |
| 453 | __be32 bandwidth_down; |
| 454 | __be32 bandwidth_up; |
| 455 | }; |
| 456 | |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 457 | /** |
| 458 | * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container |
| 459 | * @flags: translation table flags (see batadv_tt_data_flags) |
| 460 | * @ttvn: translation table version number |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 461 | * @vlan_num: number of announced VLANs. In the TVLV this struct is followed by |
| 462 | * one batadv_tvlv_tt_vlan_data object per announced vlan |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 463 | */ |
| 464 | struct batadv_tvlv_tt_data { |
| 465 | uint8_t flags; |
| 466 | uint8_t ttvn; |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 467 | __be16 num_vlan; |
| 468 | }; |
| 469 | |
| 470 | /** |
| 471 | * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through |
| 472 | * the tt tvlv container |
| 473 | * @crc: crc32 checksum of the entries belonging to this vlan |
| 474 | * @vid: vlan identifier |
| 475 | * @reserved: unused, useful for alignment purposes |
| 476 | */ |
| 477 | struct batadv_tvlv_tt_vlan_data { |
| 478 | __be32 crc; |
| 479 | __be16 vid; |
Antonio Quartulli | ced7293 | 2013-04-24 16:37:51 +0200 | [diff] [blame] | 480 | uint16_t reserved; |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 481 | }; |
| 482 | |
| 483 | /** |
| 484 | * struct batadv_tvlv_tt_change - translation table diff data |
| 485 | * @flags: status indicators concerning the non-mesh client (see |
| 486 | * batadv_tt_client_flags) |
Antonio Quartulli | ca66304 | 2013-12-15 13:26:55 +0100 | [diff] [blame^] | 487 | * @reserved: reserved field - useful for alignment purposes only |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 488 | * @addr: mac address of non-mesh client that triggered this tt change |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 489 | * @vid: VLAN identifier |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 490 | */ |
| 491 | struct batadv_tvlv_tt_change { |
| 492 | uint8_t flags; |
Antonio Quartulli | ca66304 | 2013-12-15 13:26:55 +0100 | [diff] [blame^] | 493 | uint8_t reserved[3]; |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 494 | uint8_t addr[ETH_ALEN]; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 495 | __be16 vid; |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 496 | }; |
| 497 | |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 498 | /** |
| 499 | * struct batadv_tvlv_roam_adv - roaming advertisement |
| 500 | * @client: mac address of roaming client |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 501 | * @vid: VLAN identifier |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 502 | */ |
| 503 | struct batadv_tvlv_roam_adv { |
| 504 | uint8_t client[ETH_ALEN]; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 505 | __be16 vid; |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 506 | }; |
| 507 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 508 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |