Sven Eckelmann | 9f6446c | 2015-04-23 13:16:35 +0200 | [diff] [blame] | 1 | /* Copyright (C) 2007-2015 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 |
Antonio Quartulli | ebf38fb | 2013-11-03 20:40:48 +0100 | [diff] [blame] | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 16 | */ |
| 17 | |
| 18 | #ifndef _NET_BATMAN_ADV_PACKET_H_ |
| 19 | #define _NET_BATMAN_ADV_PACKET_H_ |
| 20 | |
Sven Eckelmann | 1e2c2a4 | 2015-04-17 19:40:28 +0200 | [diff] [blame] | 21 | #include <asm/byteorder.h> |
| 22 | #include <linux/types.h> |
| 23 | |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 24 | /** |
| 25 | * enum batadv_packettype - types for batman-adv encapsulated packets |
Simon Wunderlich | a1f1ac5 | 2013-04-25 10:37:23 +0200 | [diff] [blame] | 26 | * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV |
| 27 | * @BATADV_BCAST: broadcast packets carrying broadcast payload |
| 28 | * @BATADV_CODED: network coded packets |
| 29 | * |
| 30 | * @BATADV_UNICAST: unicast packets carrying unicast payload traffic |
| 31 | * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original |
| 32 | * payload packet |
| 33 | * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of |
| 34 | * the sender |
| 35 | * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 36 | * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers |
| 37 | */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 38 | enum batadv_packettype { |
Simon Wunderlich | a1f1ac5 | 2013-04-25 10:37:23 +0200 | [diff] [blame] | 39 | /* 0x00 - 0x3f: local packets or special rules for handling */ |
| 40 | BATADV_IV_OGM = 0x00, |
| 41 | BATADV_BCAST = 0x01, |
| 42 | BATADV_CODED = 0x02, |
| 43 | /* 0x40 - 0x7f: unicast */ |
| 44 | #define BATADV_UNICAST_MIN 0x40 |
| 45 | BATADV_UNICAST = 0x40, |
| 46 | BATADV_UNICAST_FRAG = 0x41, |
| 47 | BATADV_UNICAST_4ADDR = 0x42, |
| 48 | BATADV_ICMP = 0x43, |
| 49 | BATADV_UNICAST_TVLV = 0x44, |
| 50 | #define BATADV_UNICAST_MAX 0x7f |
| 51 | /* 0x80 - 0xff: reserved */ |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | /** |
| 55 | * enum batadv_subtype - packet subtype for unicast4addr |
| 56 | * @BATADV_P_DATA: user payload |
Antonio Quartulli | 5c3a0e5 | 2011-06-02 12:29:51 +0200 | [diff] [blame] | 57 | * @BATADV_P_DAT_DHT_GET: DHT request message |
| 58 | * @BATADV_P_DAT_DHT_PUT: DHT store message |
| 59 | * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 60 | */ |
| 61 | enum batadv_subtype { |
Antonio Quartulli | 5c3a0e5 | 2011-06-02 12:29:51 +0200 | [diff] [blame] | 62 | BATADV_P_DATA = 0x01, |
| 63 | BATADV_P_DAT_DHT_GET = 0x02, |
| 64 | BATADV_P_DAT_DHT_PUT = 0x03, |
| 65 | BATADV_P_DAT_CACHE_REPLY = 0x04, |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 66 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 67 | |
| 68 | /* this file is included by batctl which needs these defines */ |
Antonio Quartulli | 60cf798 | 2013-04-20 15:59:13 +0200 | [diff] [blame] | 69 | #define BATADV_COMPAT_VERSION 15 |
Sven Eckelmann | e8958db | 2011-06-04 11:26:00 +0200 | [diff] [blame] | 70 | |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 71 | /** |
| 72 | * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets |
| 73 | * @BATADV_NOT_BEST_NEXT_HOP: flag is set when ogm packet is forwarded and was |
| 74 | * previously received from someone else than the best neighbor. |
Marek Lindner | 143d157 | 2015-08-09 23:56:50 +0800 | [diff] [blame^] | 75 | * @BATADV_PRIMARIES_FIRST_HOP: flag unused. |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 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 | |
Linus Lüssing | ab49886 | 2014-02-15 17:47:53 +0100 | [diff] [blame] | 94 | /** |
| 95 | * enum batadv_mcast_flags - flags for multicast capabilities and settings |
| 96 | * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for |
| 97 | * 224.0.0.0/24 or ff02::1 |
Linus Lüssing | 4c8755d | 2014-02-15 17:47:54 +0100 | [diff] [blame] | 98 | * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets |
| 99 | * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets |
Linus Lüssing | ab49886 | 2014-02-15 17:47:53 +0100 | [diff] [blame] | 100 | */ |
| 101 | enum batadv_mcast_flags { |
| 102 | BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0), |
Linus Lüssing | 4c8755d | 2014-02-15 17:47:54 +0100 | [diff] [blame] | 103 | BATADV_MCAST_WANT_ALL_IPV4 = BIT(1), |
| 104 | BATADV_MCAST_WANT_ALL_IPV6 = BIT(2), |
Linus Lüssing | ab49886 | 2014-02-15 17:47:53 +0100 | [diff] [blame] | 105 | }; |
| 106 | |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 107 | /* tt data subtypes */ |
| 108 | #define BATADV_TT_DATA_TYPE_MASK 0x0F |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 109 | |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 110 | /** |
| 111 | * enum batadv_tt_data_flags - flags for tt data tvlv |
| 112 | * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM |
| 113 | * @BATADV_TT_REQUEST: TT request message |
| 114 | * @BATADV_TT_RESPONSE: TT response message |
| 115 | * @BATADV_TT_FULL_TABLE: contains full table to replace existing table |
| 116 | */ |
| 117 | enum batadv_tt_data_flags { |
| 118 | BATADV_TT_OGM_DIFF = BIT(0), |
| 119 | BATADV_TT_REQUEST = BIT(1), |
| 120 | BATADV_TT_RESPONSE = BIT(2), |
| 121 | BATADV_TT_FULL_TABLE = BIT(4), |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 122 | }; |
| 123 | |
Antonio Quartulli | 43e6f65 | 2014-02-22 16:48:14 +0100 | [diff] [blame] | 124 | /** |
| 125 | * enum batadv_tt_client_flags - TT client specific flags |
| 126 | * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table |
| 127 | * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new |
| 128 | * update telling its new real location has not been received/sent yet |
| 129 | * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface. |
| 130 | * This information is used by the "AP Isolation" feature |
| 131 | * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This |
| 132 | * information is used by the Extended Isolation feature |
| 133 | * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table |
| 134 | * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has |
| 135 | * not been announced yet |
| 136 | * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept |
| 137 | * in the table for one more originator interval for consistency purposes |
| 138 | * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of |
| 139 | * the network but no nnode has already announced it |
| 140 | * |
| 141 | * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire. |
| 142 | * Bits from 8 to 15 are called _local flags_ because they are used for local |
| 143 | * computations only. |
| 144 | * |
| 145 | * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with |
| 146 | * the other nodes in the network. To achieve this goal these flags are included |
| 147 | * in the TT CRC computation. |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 148 | */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 149 | enum batadv_tt_client_flags { |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 150 | BATADV_TT_CLIENT_DEL = BIT(0), |
| 151 | BATADV_TT_CLIENT_ROAM = BIT(1), |
Antonio Quartulli | 0eb01568 | 2013-10-13 02:50:20 +0200 | [diff] [blame] | 152 | BATADV_TT_CLIENT_WIFI = BIT(4), |
Antonio Quartulli | 9464d07 | 2013-11-16 12:03:48 +0100 | [diff] [blame] | 153 | BATADV_TT_CLIENT_ISOLA = BIT(5), |
Sven Eckelmann | 8de47de | 2012-07-08 16:32:09 +0200 | [diff] [blame] | 154 | BATADV_TT_CLIENT_NOPURGE = BIT(8), |
| 155 | BATADV_TT_CLIENT_NEW = BIT(9), |
| 156 | BATADV_TT_CLIENT_PENDING = BIT(10), |
Antonio Quartulli | 0035f97 | 2013-04-24 16:37:52 +0200 | [diff] [blame] | 157 | BATADV_TT_CLIENT_TEMP = BIT(11), |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 158 | }; |
| 159 | |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 160 | /** |
| 161 | * batadv_vlan_flags - flags for the four MSB of any vlan ID field |
| 162 | * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not |
| 163 | */ |
| 164 | enum batadv_vlan_flags { |
| 165 | BATADV_VLAN_HAS_TAG = BIT(15), |
| 166 | }; |
| 167 | |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 168 | /* claim frame types for the bridge loop avoidance */ |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 169 | enum batadv_bla_claimframe { |
Simon Wunderlich | 3eb8773 | 2012-06-23 12:34:18 +0200 | [diff] [blame] | 170 | BATADV_CLAIM_TYPE_CLAIM = 0x00, |
| 171 | BATADV_CLAIM_TYPE_UNCLAIM = 0x01, |
Sven Eckelmann | acd34af | 2012-06-03 22:19:21 +0200 | [diff] [blame] | 172 | BATADV_CLAIM_TYPE_ANNOUNCE = 0x02, |
| 173 | BATADV_CLAIM_TYPE_REQUEST = 0x03, |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 174 | }; |
| 175 | |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 176 | /** |
| 177 | * enum batadv_tvlv_type - tvlv type definitions |
| 178 | * @BATADV_TVLV_GW: gateway tvlv |
Marek Lindner | 17cf0ea | 2013-04-23 21:39:59 +0800 | [diff] [blame] | 179 | * @BATADV_TVLV_DAT: distributed arp table tvlv |
Marek Lindner | 3f4841f | 2013-04-23 21:40:00 +0800 | [diff] [blame] | 180 | * @BATADV_TVLV_NC: network coding tvlv |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 181 | * @BATADV_TVLV_TT: translation table tvlv |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 182 | * @BATADV_TVLV_ROAM: roaming advertisement tvlv |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 183 | * @BATADV_TVLV_MCAST: multicast capability tvlv |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 184 | */ |
| 185 | enum batadv_tvlv_type { |
| 186 | BATADV_TVLV_GW = 0x01, |
Marek Lindner | 17cf0ea | 2013-04-23 21:39:59 +0800 | [diff] [blame] | 187 | BATADV_TVLV_DAT = 0x02, |
Marek Lindner | 3f4841f | 2013-04-23 21:40:00 +0800 | [diff] [blame] | 188 | BATADV_TVLV_NC = 0x03, |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 189 | BATADV_TVLV_TT = 0x04, |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 190 | BATADV_TVLV_ROAM = 0x05, |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 191 | BATADV_TVLV_MCAST = 0x06, |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 192 | }; |
| 193 | |
Simon Wunderlich | 2f7a318 | 2013-12-02 20:38:33 +0100 | [diff] [blame] | 194 | #pragma pack(2) |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 195 | /* the destination hardware field in the ARP frame is used to |
| 196 | * transport the claim type and the group id |
| 197 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 198 | struct batadv_bla_claim_dst { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 199 | u8 magic[3]; /* FF:43:05 */ |
| 200 | u8 type; /* bla_claimframe */ |
Al Viro | 3e2f1a1 | 2012-04-22 07:47:50 +0100 | [diff] [blame] | 201 | __be16 group; /* group id */ |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 202 | }; |
Antonio Quartulli | aa143d2 | 2014-09-01 14:37:27 +0200 | [diff] [blame] | 203 | |
Simon Wunderlich | 2f7a318 | 2013-12-02 20:38:33 +0100 | [diff] [blame] | 204 | #pragma pack() |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 205 | |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 206 | /** |
| 207 | * struct batadv_ogm_packet - ogm (routing protocol) packet |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 208 | * @packet_type: batman-adv packet type, part of the general header |
| 209 | * @version: batman-adv protocol version, part of the genereal header |
| 210 | * @ttl: time to live for this packet, part of the genereal header |
Simon Wunderlich | 18c68d5 | 2013-04-25 10:37:25 +0200 | [diff] [blame] | 211 | * @flags: contains routing relevant flags - see enum batadv_iv_flags |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 212 | * @tvlv_len: length of tvlv data following the ogm header |
| 213 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 214 | struct batadv_ogm_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 215 | u8 packet_type; |
| 216 | u8 version; |
| 217 | u8 ttl; |
| 218 | u8 flags; |
| 219 | __be32 seqno; |
| 220 | u8 orig[ETH_ALEN]; |
| 221 | u8 prev_sender[ETH_ALEN]; |
| 222 | u8 reserved; |
| 223 | u8 tq; |
| 224 | __be16 tvlv_len; |
Simon Wunderlich | 9284a47 | 2013-04-25 10:37:24 +0200 | [diff] [blame] | 225 | /* __packed is not needed as the struct size is divisible by 4, |
| 226 | * and the largest data type in this struct has a size of 4. |
| 227 | */ |
| 228 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 229 | |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 230 | #define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 231 | |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 232 | /** |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 233 | * batadv_icmp_header - common members among all the ICMP packets |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 234 | * @packet_type: batman-adv packet type, part of the general header |
| 235 | * @version: batman-adv protocol version, part of the genereal header |
| 236 | * @ttl: time to live for this packet, part of the genereal header |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 237 | * @msg_type: ICMP packet type |
| 238 | * @dst: address of the destination node |
| 239 | * @orig: address of the source node |
| 240 | * @uid: local ICMP socket identifier |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 241 | * @align: not used - useful for alignment purposes only |
| 242 | * |
| 243 | * This structure is used for ICMP packets parsing only and it is never sent |
| 244 | * over the wire. The alignment field at the end is there to ensure that |
| 245 | * members are padded the same way as they are in real packets. |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 246 | */ |
| 247 | struct batadv_icmp_header { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 248 | u8 packet_type; |
| 249 | u8 version; |
| 250 | u8 ttl; |
| 251 | u8 msg_type; /* see ICMP message types above */ |
| 252 | u8 dst[ETH_ALEN]; |
| 253 | u8 orig[ETH_ALEN]; |
| 254 | u8 uid; |
| 255 | u8 align[3]; |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 256 | }; |
| 257 | |
| 258 | /** |
| 259 | * batadv_icmp_packet - ICMP packet |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 260 | * @packet_type: batman-adv packet type, part of the general header |
| 261 | * @version: batman-adv protocol version, part of the genereal header |
| 262 | * @ttl: time to live for this packet, part of the genereal header |
| 263 | * @msg_type: ICMP packet type |
| 264 | * @dst: address of the destination node |
| 265 | * @orig: address of the source node |
| 266 | * @uid: local ICMP socket identifier |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 267 | * @reserved: not used - useful for alignment |
| 268 | * @seqno: ICMP sequence number |
| 269 | */ |
| 270 | struct batadv_icmp_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 271 | u8 packet_type; |
| 272 | u8 version; |
| 273 | u8 ttl; |
| 274 | u8 msg_type; /* see ICMP message types above */ |
| 275 | u8 dst[ETH_ALEN]; |
| 276 | u8 orig[ETH_ALEN]; |
| 277 | u8 uid; |
| 278 | u8 reserved; |
| 279 | __be16 seqno; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 280 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 281 | |
Sven Eckelmann | 7e071c7 | 2012-06-03 22:19:13 +0200 | [diff] [blame] | 282 | #define BATADV_RR_LEN 16 |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 283 | |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 284 | /** |
| 285 | * batadv_icmp_packet_rr - ICMP RouteRecord packet |
Antonio Quartulli | 27a417e | 2013-12-05 15:33:00 +0100 | [diff] [blame] | 286 | * @packet_type: batman-adv packet type, part of the general header |
| 287 | * @version: batman-adv protocol version, part of the genereal header |
| 288 | * @ttl: time to live for this packet, part of the genereal header |
| 289 | * @msg_type: ICMP packet type |
| 290 | * @dst: address of the destination node |
| 291 | * @orig: address of the source node |
| 292 | * @uid: local ICMP socket identifier |
Antonio Quartulli | 0bf84c1 | 2013-05-18 14:56:57 +0200 | [diff] [blame] | 293 | * @rr_cur: number of entries the rr array |
| 294 | * @seqno: ICMP sequence number |
| 295 | * @rr: route record array |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 296 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 297 | struct batadv_icmp_packet_rr { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 298 | u8 packet_type; |
| 299 | u8 version; |
| 300 | u8 ttl; |
| 301 | u8 msg_type; /* see ICMP message types above */ |
| 302 | u8 dst[ETH_ALEN]; |
| 303 | u8 orig[ETH_ALEN]; |
| 304 | u8 uid; |
| 305 | u8 rr_cur; |
| 306 | __be16 seqno; |
| 307 | u8 rr[BATADV_RR_LEN][ETH_ALEN]; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 308 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 309 | |
Simon Wunderlich | da6b8c2 | 2013-10-22 22:50:09 +0200 | [diff] [blame] | 310 | #define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr) |
| 311 | |
Sven Eckelmann | e022b95 | 2012-11-05 21:25:27 +0100 | [diff] [blame] | 312 | /* All packet headers in front of an ethernet header have to be completely |
| 313 | * divisible by 2 but not by 4 to make the payload after the ethernet |
| 314 | * header again 4 bytes boundary aligned. |
| 315 | * |
| 316 | * A packing of 2 is necessary to avoid extra padding at the end of the struct |
| 317 | * caused by a structure member which is larger than two bytes. Otherwise |
| 318 | * the structure would not fulfill the previously mentioned rule to avoid the |
| 319 | * misalignment of the payload after the ethernet header. It may also lead to |
| 320 | * leakage of information when the padding it not initialized before sending. |
| 321 | */ |
| 322 | #pragma pack(2) |
| 323 | |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 324 | /** |
| 325 | * struct batadv_unicast_packet - unicast packet for network payload |
| 326 | * @packet_type: batman-adv packet type, part of the general header |
| 327 | * @version: batman-adv protocol version, part of the genereal header |
| 328 | * @ttl: time to live for this packet, part of the genereal header |
| 329 | * @ttvn: translation table version number |
| 330 | * @dest: originator destination of the unicast packet |
| 331 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 332 | struct batadv_unicast_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 333 | u8 packet_type; |
| 334 | u8 version; |
| 335 | u8 ttl; |
| 336 | u8 ttvn; /* destination translation table version number */ |
| 337 | u8 dest[ETH_ALEN]; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 338 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
| 339 | * following ethernet header again 4 bytes boundary aligned |
| 340 | */ |
| 341 | }; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 342 | |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 343 | /** |
| 344 | * struct batadv_unicast_4addr_packet - extended unicast packet |
| 345 | * @u: common unicast packet header |
| 346 | * @src: address of the source |
| 347 | * @subtype: packet subtype |
| 348 | */ |
| 349 | struct batadv_unicast_4addr_packet { |
| 350 | struct batadv_unicast_packet u; |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 351 | u8 src[ETH_ALEN]; |
| 352 | u8 subtype; |
| 353 | u8 reserved; |
Antonio Quartulli | 7cdcf6d | 2012-10-01 09:57:35 +0200 | [diff] [blame] | 354 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
| 355 | * following ethernet header again 4 bytes boundary aligned |
| 356 | */ |
| 357 | }; |
| 358 | |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 359 | /** |
| 360 | * struct batadv_frag_packet - fragmented packet |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 361 | * @packet_type: batman-adv packet type, part of the general header |
| 362 | * @version: batman-adv protocol version, part of the genereal header |
| 363 | * @ttl: time to live for this packet, part of the genereal header |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 364 | * @dest: final destination used when routing fragments |
| 365 | * @orig: originator of the fragment used when merging the packet |
| 366 | * @no: fragment number within this sequence |
| 367 | * @reserved: reserved byte for alignment |
| 368 | * @seqno: sequence identification |
| 369 | * @total_size: size of the merged packet |
| 370 | */ |
| 371 | struct batadv_frag_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 372 | u8 packet_type; |
| 373 | u8 version; /* batman version field */ |
| 374 | u8 ttl; |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 375 | #if defined(__BIG_ENDIAN_BITFIELD) |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 376 | u8 no:4; |
| 377 | u8 reserved:4; |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 378 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 379 | u8 reserved:4; |
| 380 | u8 no:4; |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 381 | #else |
Antonio Quartulli | 3f68785 | 2014-11-02 11:29:56 +0100 | [diff] [blame] | 382 | #error "unknown bitfield endianness" |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 383 | #endif |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 384 | u8 dest[ETH_ALEN]; |
| 385 | u8 orig[ETH_ALEN]; |
| 386 | __be16 seqno; |
| 387 | __be16 total_size; |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 388 | }; |
| 389 | |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 390 | /** |
| 391 | * struct batadv_bcast_packet - broadcast packet for network payload |
| 392 | * @packet_type: batman-adv packet type, part of the general header |
| 393 | * @version: batman-adv protocol version, part of the genereal header |
| 394 | * @ttl: time to live for this packet, part of the genereal header |
| 395 | * @reserved: reserved byte for alignment |
| 396 | * @seqno: sequence identification |
| 397 | * @orig: originator of the broadcast packet |
| 398 | */ |
Sven Eckelmann | 9641269 | 2012-06-05 22:31:30 +0200 | [diff] [blame] | 399 | struct batadv_bcast_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 400 | u8 packet_type; |
| 401 | u8 version; /* batman version field */ |
| 402 | u8 ttl; |
| 403 | u8 reserved; |
| 404 | __be32 seqno; |
| 405 | u8 orig[ETH_ALEN]; |
Sven Eckelmann | f6c57a4 | 2012-11-05 21:25:26 +0100 | [diff] [blame] | 406 | /* "4 bytes boundary + 2 bytes" long to make the payload after the |
| 407 | * following ethernet header again 4 bytes boundary aligned |
| 408 | */ |
Sven Eckelmann | e022b95 | 2012-11-05 21:25:27 +0100 | [diff] [blame] | 409 | }; |
| 410 | |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 411 | /** |
| 412 | * struct batadv_coded_packet - network coded packet |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 413 | * @packet_type: batman-adv packet type, part of the general header |
| 414 | * @version: batman-adv protocol version, part of the genereal header |
| 415 | * @ttl: time to live for this packet, part of the genereal header |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 416 | * @reserved: Align following fields to 2-byte boundaries |
| 417 | * @first_source: original source of first included packet |
| 418 | * @first_orig_dest: original destinal of first included packet |
| 419 | * @first_crc: checksum of first included packet |
| 420 | * @first_ttvn: tt-version number of first included packet |
| 421 | * @second_ttl: ttl of second packet |
| 422 | * @second_dest: second receiver of this coded packet |
| 423 | * @second_source: original source of second included packet |
| 424 | * @second_orig_dest: original destination of second included packet |
| 425 | * @second_crc: checksum of second included packet |
| 426 | * @second_ttvn: tt version number of second included packet |
| 427 | * @coded_len: length of network coded part of the payload |
| 428 | */ |
| 429 | struct batadv_coded_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 430 | u8 packet_type; |
| 431 | u8 version; /* batman version field */ |
| 432 | u8 ttl; |
| 433 | u8 first_ttvn; |
| 434 | /* u8 first_dest[ETH_ALEN]; - saved in mac header destination */ |
| 435 | u8 first_source[ETH_ALEN]; |
| 436 | u8 first_orig_dest[ETH_ALEN]; |
| 437 | __be32 first_crc; |
| 438 | u8 second_ttl; |
| 439 | u8 second_ttvn; |
| 440 | u8 second_dest[ETH_ALEN]; |
| 441 | u8 second_source[ETH_ALEN]; |
| 442 | u8 second_orig_dest[ETH_ALEN]; |
| 443 | __be32 second_crc; |
| 444 | __be16 coded_len; |
Martin Hundebøll | 3c12de9 | 2013-01-25 11:12:41 +0100 | [diff] [blame] | 445 | }; |
| 446 | |
Simon Wunderlich | 46b76e0 | 2013-12-02 20:38:30 +0100 | [diff] [blame] | 447 | #pragma pack() |
| 448 | |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 449 | /** |
| 450 | * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload |
Simon Wunderlich | a40d9b0 | 2013-12-02 20:38:31 +0100 | [diff] [blame] | 451 | * @packet_type: batman-adv packet type, part of the general header |
| 452 | * @version: batman-adv protocol version, part of the genereal header |
| 453 | * @ttl: time to live for this packet, part of the genereal header |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 454 | * @reserved: reserved field (for packet alignment) |
| 455 | * @src: address of the source |
| 456 | * @dst: address of the destination |
| 457 | * @tvlv_len: length of tvlv data following the unicast tvlv header |
Antonio Quartulli | 3f68785 | 2014-11-02 11:29:56 +0100 | [diff] [blame] | 458 | * @align: 2 bytes to align the header to a 4 byte boundary |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 459 | */ |
| 460 | struct batadv_unicast_tvlv_packet { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 461 | u8 packet_type; |
| 462 | u8 version; /* batman version field */ |
| 463 | u8 ttl; |
| 464 | u8 reserved; |
| 465 | u8 dst[ETH_ALEN]; |
| 466 | u8 src[ETH_ALEN]; |
| 467 | __be16 tvlv_len; |
| 468 | u16 align; |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 469 | }; |
| 470 | |
| 471 | /** |
| 472 | * struct batadv_tvlv_hdr - base tvlv header struct |
| 473 | * @type: tvlv container type (see batadv_tvlv_type) |
| 474 | * @version: tvlv container version |
| 475 | * @len: tvlv container length |
| 476 | */ |
| 477 | struct batadv_tvlv_hdr { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 478 | u8 type; |
| 479 | u8 version; |
| 480 | __be16 len; |
Marek Lindner | ef26157 | 2013-04-23 21:39:57 +0800 | [diff] [blame] | 481 | }; |
| 482 | |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 483 | /** |
| 484 | * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv |
| 485 | * container |
| 486 | * @bandwidth_down: advertised uplink download bandwidth |
| 487 | * @bandwidth_up: advertised uplink upload bandwidth |
| 488 | */ |
| 489 | struct batadv_tvlv_gateway_data { |
| 490 | __be32 bandwidth_down; |
| 491 | __be32 bandwidth_up; |
| 492 | }; |
| 493 | |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 494 | /** |
| 495 | * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container |
| 496 | * @flags: translation table flags (see batadv_tt_data_flags) |
| 497 | * @ttvn: translation table version number |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 498 | * @vlan_num: number of announced VLANs. In the TVLV this struct is followed by |
| 499 | * one batadv_tvlv_tt_vlan_data object per announced vlan |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 500 | */ |
| 501 | struct batadv_tvlv_tt_data { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 502 | u8 flags; |
| 503 | u8 ttvn; |
| 504 | __be16 num_vlan; |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 505 | }; |
| 506 | |
| 507 | /** |
| 508 | * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through |
| 509 | * the tt tvlv container |
| 510 | * @crc: crc32 checksum of the entries belonging to this vlan |
| 511 | * @vid: vlan identifier |
| 512 | * @reserved: unused, useful for alignment purposes |
| 513 | */ |
| 514 | struct batadv_tvlv_tt_vlan_data { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 515 | __be32 crc; |
| 516 | __be16 vid; |
| 517 | u16 reserved; |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 518 | }; |
| 519 | |
| 520 | /** |
| 521 | * struct batadv_tvlv_tt_change - translation table diff data |
| 522 | * @flags: status indicators concerning the non-mesh client (see |
| 523 | * batadv_tt_client_flags) |
Antonio Quartulli | ca66304 | 2013-12-15 13:26:55 +0100 | [diff] [blame] | 524 | * @reserved: reserved field - useful for alignment purposes only |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 525 | * @addr: mac address of non-mesh client that triggered this tt change |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 526 | * @vid: VLAN identifier |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 527 | */ |
| 528 | struct batadv_tvlv_tt_change { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 529 | u8 flags; |
| 530 | u8 reserved[3]; |
| 531 | u8 addr[ETH_ALEN]; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 532 | __be16 vid; |
Marek Lindner | e1bf0c1 | 2013-04-23 21:40:01 +0800 | [diff] [blame] | 533 | }; |
| 534 | |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 535 | /** |
| 536 | * struct batadv_tvlv_roam_adv - roaming advertisement |
| 537 | * @client: mac address of roaming client |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 538 | * @vid: VLAN identifier |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 539 | */ |
| 540 | struct batadv_tvlv_roam_adv { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 541 | u8 client[ETH_ALEN]; |
Antonio Quartulli | c018ad3 | 2013-06-04 12:11:39 +0200 | [diff] [blame] | 542 | __be16 vid; |
Marek Lindner | 122edaa | 2013-04-23 21:40:03 +0800 | [diff] [blame] | 543 | }; |
| 544 | |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 545 | /** |
| 546 | * struct batadv_tvlv_mcast_data - payload of a multicast tvlv |
| 547 | * @flags: multicast flags announced by the orig node |
| 548 | * @reserved: reserved field |
| 549 | */ |
| 550 | struct batadv_tvlv_mcast_data { |
Sven Eckelmann | 6b5e971 | 2015-05-26 18:34:26 +0200 | [diff] [blame] | 551 | u8 flags; |
| 552 | u8 reserved[3]; |
Linus Lüssing | 60432d7 | 2014-02-15 17:47:51 +0100 | [diff] [blame] | 553 | }; |
| 554 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 555 | #endif /* _NET_BATMAN_ADV_PACKET_H_ */ |