Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* SCTP kernel reference Implementation |
| 2 | * (C) Copyright IBM Corp. 2001, 2004 |
| 3 | * Copyright (c) 1999-2000 Cisco, Inc. |
| 4 | * Copyright (c) 1999-2001 Motorola, Inc. |
| 5 | * Copyright (c) 2001 Intel Corp. |
| 6 | * Copyright (c) 2001 Nokia, Inc. |
| 7 | * Copyright (c) 2001 La Monte H.P. Yarroll |
| 8 | * |
| 9 | * This file is part of the SCTP kernel reference Implementation |
| 10 | * |
| 11 | * Various protocol defined structures. |
| 12 | * |
Vlad Yasevich | 60c778b | 2008-01-11 09:57:09 -0500 | [diff] [blame] | 13 | * This SCTP implementation is free software; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * you can redistribute it and/or modify it under the terms of |
| 15 | * the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2, or (at your option) |
| 17 | * any later version. |
| 18 | * |
Vlad Yasevich | 60c778b | 2008-01-11 09:57:09 -0500 | [diff] [blame] | 19 | * This SCTP implementation is distributed in the hope that it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 21 | * ************************ |
| 22 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 23 | * See the GNU General Public License for more details. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License |
Jeff Kirsher | 4b2f13a | 2013-12-06 06:28:48 -0800 | [diff] [blame] | 26 | * along with GNU CC; see the file COPYING. If not, see |
| 27 | * <http://www.gnu.org/licenses/>. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | * |
| 29 | * Please send any bug reports or fixes you make to the |
| 30 | * email address(es): |
Jean Sacren | 3195666 | 2014-01-19 15:24:53 -0700 | [diff] [blame] | 31 | * lksctp developers <linux-sctp@vger.kernel.org> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | * |
| 33 | * Or submit a bug report through the following website: |
| 34 | * http://www.sf.net/projects/lksctp |
| 35 | * |
| 36 | * Written or modified by: |
| 37 | * La Monte H.P. Yarroll <piggy@acm.org> |
| 38 | * Karl Knutson <karl@athena.chicago.il.us> |
| 39 | * Jon Grimm <jgrimm@us.ibm.com> |
| 40 | * Xingang Guo <xingang.guo@intel.com> |
| 41 | * randall@sctp.chicago.il.us |
| 42 | * kmorneau@cisco.com |
| 43 | * qxie1@email.mot.com |
| 44 | * Sridhar Samudrala <sri@us.ibm.com> |
| 45 | * Kevin Gao <kevin.gao@intel.com> |
| 46 | * |
| 47 | * Any bugs reported given to us we will try to fix... any fixes shared will |
| 48 | * be incorporated into the next SCTP release. |
| 49 | */ |
| 50 | #ifndef __LINUX_SCTP_H__ |
| 51 | #define __LINUX_SCTP_H__ |
| 52 | |
| 53 | #include <linux/in.h> /* We need in_addr. */ |
| 54 | #include <linux/in6.h> /* We need in6_addr. */ |
Daniel Borkmann | 1b86643 | 2013-04-09 05:54:01 +0000 | [diff] [blame] | 55 | #include <linux/skbuff.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Daniel Borkmann | 1b86643 | 2013-04-09 05:54:01 +0000 | [diff] [blame] | 57 | #include <uapi/linux/sctp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | /* Section 3.1. SCTP Common Header Format */ |
| 60 | typedef struct sctphdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 61 | __be16 source; |
| 62 | __be16 dest; |
| 63 | __be32 vtag; |
Vlad Yasevich | 4458f04 | 2009-02-13 08:33:42 +0000 | [diff] [blame] | 64 | __le32 checksum; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 65 | } sctp_sctphdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Arnaldo Carvalho de Melo | 2c0fd38 | 2007-03-13 13:59:32 -0300 | [diff] [blame] | 67 | static inline struct sctphdr *sctp_hdr(const struct sk_buff *skb) |
| 68 | { |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 69 | return (struct sctphdr *)skb_transport_header(skb); |
Arnaldo Carvalho de Melo | 2c0fd38 | 2007-03-13 13:59:32 -0300 | [diff] [blame] | 70 | } |
Arnaldo Carvalho de Melo | 2c0fd38 | 2007-03-13 13:59:32 -0300 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | /* Section 3.2. Chunk Field Descriptions. */ |
| 73 | typedef struct sctp_chunkhdr { |
| 74 | __u8 type; |
| 75 | __u8 flags; |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 76 | __be16 length; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 77 | } sctp_chunkhdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | |
| 80 | /* Section 3.2. Chunk Type Values. |
| 81 | * [Chunk Type] identifies the type of information contained in the Chunk |
| 82 | * Value field. It takes a value from 0 to 254. The value of 255 is |
| 83 | * reserved for future use as an extension field. |
| 84 | */ |
| 85 | typedef enum { |
| 86 | SCTP_CID_DATA = 0, |
| 87 | SCTP_CID_INIT = 1, |
| 88 | SCTP_CID_INIT_ACK = 2, |
| 89 | SCTP_CID_SACK = 3, |
| 90 | SCTP_CID_HEARTBEAT = 4, |
| 91 | SCTP_CID_HEARTBEAT_ACK = 5, |
| 92 | SCTP_CID_ABORT = 6, |
| 93 | SCTP_CID_SHUTDOWN = 7, |
| 94 | SCTP_CID_SHUTDOWN_ACK = 8, |
| 95 | SCTP_CID_ERROR = 9, |
| 96 | SCTP_CID_COOKIE_ECHO = 10, |
| 97 | SCTP_CID_COOKIE_ACK = 11, |
| 98 | SCTP_CID_ECN_ECNE = 12, |
| 99 | SCTP_CID_ECN_CWR = 13, |
| 100 | SCTP_CID_SHUTDOWN_COMPLETE = 14, |
| 101 | |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 102 | /* AUTH Extension Section 4.1 */ |
| 103 | SCTP_CID_AUTH = 0x0F, |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | /* PR-SCTP Sec 3.2 */ |
| 106 | SCTP_CID_FWD_TSN = 0xC0, |
| 107 | |
| 108 | /* Use hex, as defined in ADDIP sec. 3.1 */ |
| 109 | SCTP_CID_ASCONF = 0xC1, |
| 110 | SCTP_CID_ASCONF_ACK = 0x80, |
Xin Long | cc16f00 | 2017-01-18 00:44:42 +0800 | [diff] [blame] | 111 | SCTP_CID_RECONF = 0x82, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | } sctp_cid_t; /* enum */ |
| 113 | |
| 114 | |
| 115 | /* Section 3.2 |
| 116 | * Chunk Types are encoded such that the highest-order two bits specify |
| 117 | * the action that must be taken if the processing endpoint does not |
| 118 | * recognize the Chunk Type. |
| 119 | */ |
| 120 | typedef enum { |
| 121 | SCTP_CID_ACTION_DISCARD = 0x00, |
| 122 | SCTP_CID_ACTION_DISCARD_ERR = 0x40, |
| 123 | SCTP_CID_ACTION_SKIP = 0x80, |
| 124 | SCTP_CID_ACTION_SKIP_ERR = 0xc0, |
| 125 | } sctp_cid_action_t; |
| 126 | |
| 127 | enum { SCTP_CID_ACTION_MASK = 0xc0, }; |
| 128 | |
| 129 | /* This flag is used in Chunk Flags for ABORT and SHUTDOWN COMPLETE. |
| 130 | * |
| 131 | * 3.3.7 Abort Association (ABORT) (6): |
| 132 | * The T bit is set to 0 if the sender had a TCB that it destroyed. |
| 133 | * If the sender did not have a TCB it should set this bit to 1. |
| 134 | */ |
| 135 | enum { SCTP_CHUNK_FLAG_T = 0x01 }; |
| 136 | |
| 137 | /* |
| 138 | * Set the T bit |
| 139 | * |
| 140 | * 0 1 2 3 |
| 141 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 142 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 143 | * | Type = 14 |Reserved |T| Length = 4 | |
| 144 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 145 | * |
| 146 | * Chunk Flags: 8 bits |
| 147 | * |
| 148 | * Reserved: 7 bits |
| 149 | * Set to 0 on transmit and ignored on receipt. |
| 150 | * |
| 151 | * T bit: 1 bit |
| 152 | * The T bit is set to 0 if the sender had a TCB that it destroyed. If |
| 153 | * the sender did NOT have a TCB it should set this bit to 1. |
| 154 | * |
| 155 | * Note: Special rules apply to this chunk for verification, please |
| 156 | * see Section 8.5.1 for details. |
| 157 | */ |
| 158 | |
| 159 | #define sctp_test_T_bit(c) ((c)->chunk_hdr->flags & SCTP_CHUNK_FLAG_T) |
| 160 | |
| 161 | /* RFC 2960 |
| 162 | * Section 3.2.1 Optional/Variable-length Parmaeter Format. |
| 163 | */ |
| 164 | |
| 165 | typedef struct sctp_paramhdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 166 | __be16 type; |
| 167 | __be16 length; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 168 | } sctp_paramhdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
| 170 | typedef enum { |
| 171 | |
| 172 | /* RFC 2960 Section 3.3.5 */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 173 | SCTP_PARAM_HEARTBEAT_INFO = cpu_to_be16(1), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | /* RFC 2960 Section 3.3.2.1 */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 175 | SCTP_PARAM_IPV4_ADDRESS = cpu_to_be16(5), |
| 176 | SCTP_PARAM_IPV6_ADDRESS = cpu_to_be16(6), |
| 177 | SCTP_PARAM_STATE_COOKIE = cpu_to_be16(7), |
| 178 | SCTP_PARAM_UNRECOGNIZED_PARAMETERS = cpu_to_be16(8), |
| 179 | SCTP_PARAM_COOKIE_PRESERVATIVE = cpu_to_be16(9), |
| 180 | SCTP_PARAM_HOST_NAME_ADDRESS = cpu_to_be16(11), |
| 181 | SCTP_PARAM_SUPPORTED_ADDRESS_TYPES = cpu_to_be16(12), |
| 182 | SCTP_PARAM_ECN_CAPABLE = cpu_to_be16(0x8000), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 184 | /* AUTH Extension Section 3 */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 185 | SCTP_PARAM_RANDOM = cpu_to_be16(0x8002), |
| 186 | SCTP_PARAM_CHUNKS = cpu_to_be16(0x8003), |
| 187 | SCTP_PARAM_HMAC_ALGO = cpu_to_be16(0x8004), |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 188 | |
Vlad Yasevich | 131a47e | 2007-09-16 15:53:56 -0700 | [diff] [blame] | 189 | /* Add-IP: Supported Extensions, Section 4.2 */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 190 | SCTP_PARAM_SUPPORTED_EXT = cpu_to_be16(0x8008), |
Vlad Yasevich | 131a47e | 2007-09-16 15:53:56 -0700 | [diff] [blame] | 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | /* PR-SCTP Sec 3.1 */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 193 | SCTP_PARAM_FWD_TSN_SUPPORT = cpu_to_be16(0xc000), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
| 195 | /* Add-IP Extension. Section 3.2 */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 196 | SCTP_PARAM_ADD_IP = cpu_to_be16(0xc001), |
| 197 | SCTP_PARAM_DEL_IP = cpu_to_be16(0xc002), |
| 198 | SCTP_PARAM_ERR_CAUSE = cpu_to_be16(0xc003), |
| 199 | SCTP_PARAM_SET_PRIMARY = cpu_to_be16(0xc004), |
| 200 | SCTP_PARAM_SUCCESS_REPORT = cpu_to_be16(0xc005), |
| 201 | SCTP_PARAM_ADAPTATION_LAYER_IND = cpu_to_be16(0xc006), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
Xin Long | cc16f00 | 2017-01-18 00:44:42 +0800 | [diff] [blame] | 203 | /* RE-CONFIG. Section 4 */ |
| 204 | SCTP_PARAM_RESET_OUT_REQUEST = cpu_to_be16(0x000d), |
| 205 | SCTP_PARAM_RESET_IN_REQUEST = cpu_to_be16(0x000e), |
| 206 | SCTP_PARAM_RESET_TSN_REQUEST = cpu_to_be16(0x000f), |
| 207 | SCTP_PARAM_RESET_RESPONSE = cpu_to_be16(0x0010), |
| 208 | SCTP_PARAM_RESET_ADD_OUT_STREAMS = cpu_to_be16(0x0011), |
| 209 | SCTP_PARAM_RESET_ADD_IN_STREAMS = cpu_to_be16(0x0012), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | } sctp_param_t; /* enum */ |
| 211 | |
| 212 | |
| 213 | /* RFC 2960 Section 3.2.1 |
| 214 | * The Parameter Types are encoded such that the highest-order two bits |
| 215 | * specify the action that must be taken if the processing endpoint does |
| 216 | * not recognize the Parameter Type. |
| 217 | * |
| 218 | */ |
| 219 | typedef enum { |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 220 | SCTP_PARAM_ACTION_DISCARD = cpu_to_be16(0x0000), |
| 221 | SCTP_PARAM_ACTION_DISCARD_ERR = cpu_to_be16(0x4000), |
| 222 | SCTP_PARAM_ACTION_SKIP = cpu_to_be16(0x8000), |
| 223 | SCTP_PARAM_ACTION_SKIP_ERR = cpu_to_be16(0xc000), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | } sctp_param_action_t; |
| 225 | |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 226 | enum { SCTP_PARAM_ACTION_MASK = cpu_to_be16(0xc000), }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | /* RFC 2960 Section 3.3.1 Payload Data (DATA) (0) */ |
| 229 | |
| 230 | typedef struct sctp_datahdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 231 | __be32 tsn; |
| 232 | __be16 stream; |
| 233 | __be16 ssn; |
| 234 | __be32 ppid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | __u8 payload[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 236 | } sctp_datahdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | typedef struct sctp_data_chunk { |
| 239 | sctp_chunkhdr_t chunk_hdr; |
| 240 | sctp_datahdr_t data_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 241 | } sctp_data_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
| 243 | /* DATA Chuck Specific Flags */ |
| 244 | enum { |
| 245 | SCTP_DATA_MIDDLE_FRAG = 0x00, |
| 246 | SCTP_DATA_LAST_FRAG = 0x01, |
| 247 | SCTP_DATA_FIRST_FRAG = 0x02, |
| 248 | SCTP_DATA_NOT_FRAG = 0x03, |
| 249 | SCTP_DATA_UNORDERED = 0x04, |
Wei Yongjun | 475cba4 | 2009-11-23 15:53:52 -0500 | [diff] [blame] | 250 | SCTP_DATA_SACK_IMM = 0x08, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | }; |
| 252 | enum { SCTP_DATA_FRAG_MASK = 0x03, }; |
| 253 | |
| 254 | |
| 255 | /* RFC 2960 Section 3.3.2 Initiation (INIT) (1) |
| 256 | * |
| 257 | * This chunk is used to initiate a SCTP association between two |
| 258 | * endpoints. |
| 259 | */ |
| 260 | typedef struct sctp_inithdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 261 | __be32 init_tag; |
| 262 | __be32 a_rwnd; |
| 263 | __be16 num_outbound_streams; |
| 264 | __be16 num_inbound_streams; |
| 265 | __be32 initial_tsn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | __u8 params[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 267 | } sctp_inithdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | typedef struct sctp_init_chunk { |
| 270 | sctp_chunkhdr_t chunk_hdr; |
| 271 | sctp_inithdr_t init_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 272 | } sctp_init_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | |
| 275 | /* Section 3.3.2.1. IPv4 Address Parameter (5) */ |
| 276 | typedef struct sctp_ipv4addr_param { |
| 277 | sctp_paramhdr_t param_hdr; |
| 278 | struct in_addr addr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 279 | } sctp_ipv4addr_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
| 281 | /* Section 3.3.2.1. IPv6 Address Parameter (6) */ |
| 282 | typedef struct sctp_ipv6addr_param { |
| 283 | sctp_paramhdr_t param_hdr; |
| 284 | struct in6_addr addr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 285 | } sctp_ipv6addr_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
| 287 | /* Section 3.3.2.1 Cookie Preservative (9) */ |
| 288 | typedef struct sctp_cookie_preserve_param { |
| 289 | sctp_paramhdr_t param_hdr; |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 290 | __be32 lifespan_increment; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 291 | } sctp_cookie_preserve_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | /* Section 3.3.2.1 Host Name Address (11) */ |
| 294 | typedef struct sctp_hostname_param { |
| 295 | sctp_paramhdr_t param_hdr; |
| 296 | uint8_t hostname[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 297 | } sctp_hostname_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
| 299 | /* Section 3.3.2.1 Supported Address Types (12) */ |
| 300 | typedef struct sctp_supported_addrs_param { |
| 301 | sctp_paramhdr_t param_hdr; |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 302 | __be16 types[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 303 | } sctp_supported_addrs_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
| 305 | /* Appendix A. ECN Capable (32768) */ |
| 306 | typedef struct sctp_ecn_capable_param { |
| 307 | sctp_paramhdr_t param_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 308 | } sctp_ecn_capable_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Ivan Skytte Jorgensen | 0f3fffd | 2006-12-20 16:07:04 -0800 | [diff] [blame] | 310 | /* ADDIP Section 3.2.6 Adaptation Layer Indication */ |
| 311 | typedef struct sctp_adaptation_ind_param { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | struct sctp_paramhdr param_hdr; |
Ivan Skytte Jorgensen | 0f3fffd | 2006-12-20 16:07:04 -0800 | [diff] [blame] | 313 | __be32 adaptation_ind; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 314 | } sctp_adaptation_ind_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
Vlad Yasevich | 131a47e | 2007-09-16 15:53:56 -0700 | [diff] [blame] | 316 | /* ADDIP Section 4.2.7 Supported Extensions Parameter */ |
| 317 | typedef struct sctp_supported_ext_param { |
| 318 | struct sctp_paramhdr param_hdr; |
| 319 | __u8 chunks[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 320 | } sctp_supported_ext_param_t; |
Vlad Yasevich | 131a47e | 2007-09-16 15:53:56 -0700 | [diff] [blame] | 321 | |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 322 | /* AUTH Section 3.1 Random */ |
| 323 | typedef struct sctp_random_param { |
| 324 | sctp_paramhdr_t param_hdr; |
| 325 | __u8 random_val[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 326 | } sctp_random_param_t; |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 327 | |
| 328 | /* AUTH Section 3.2 Chunk List */ |
| 329 | typedef struct sctp_chunks_param { |
| 330 | sctp_paramhdr_t param_hdr; |
| 331 | __u8 chunks[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 332 | } sctp_chunks_param_t; |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 333 | |
| 334 | /* AUTH Section 3.3 HMAC Algorithm */ |
| 335 | typedef struct sctp_hmac_algo_param { |
| 336 | sctp_paramhdr_t param_hdr; |
| 337 | __be16 hmac_ids[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 338 | } sctp_hmac_algo_param_t; |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | /* RFC 2960. Section 3.3.3 Initiation Acknowledgement (INIT ACK) (2): |
| 341 | * The INIT ACK chunk is used to acknowledge the initiation of an SCTP |
| 342 | * association. |
| 343 | */ |
| 344 | typedef sctp_init_chunk_t sctp_initack_chunk_t; |
| 345 | |
| 346 | /* Section 3.3.3.1 State Cookie (7) */ |
| 347 | typedef struct sctp_cookie_param { |
| 348 | sctp_paramhdr_t p; |
| 349 | __u8 body[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 350 | } sctp_cookie_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
| 352 | /* Section 3.3.3.1 Unrecognized Parameters (8) */ |
| 353 | typedef struct sctp_unrecognized_param { |
| 354 | sctp_paramhdr_t param_hdr; |
| 355 | sctp_paramhdr_t unrecognized; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 356 | } sctp_unrecognized_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
| 358 | |
| 359 | |
| 360 | /* |
| 361 | * 3.3.4 Selective Acknowledgement (SACK) (3): |
| 362 | * |
| 363 | * This chunk is sent to the peer endpoint to acknowledge received DATA |
| 364 | * chunks and to inform the peer endpoint of gaps in the received |
| 365 | * subsequences of DATA chunks as represented by their TSNs. |
| 366 | */ |
| 367 | |
| 368 | typedef struct sctp_gap_ack_block { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 369 | __be16 start; |
| 370 | __be16 end; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 371 | } sctp_gap_ack_block_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 373 | typedef __be32 sctp_dup_tsn_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
| 375 | typedef union { |
| 376 | sctp_gap_ack_block_t gab; |
| 377 | sctp_dup_tsn_t dup; |
| 378 | } sctp_sack_variable_t; |
| 379 | |
| 380 | typedef struct sctp_sackhdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 381 | __be32 cum_tsn_ack; |
| 382 | __be32 a_rwnd; |
| 383 | __be16 num_gap_ack_blocks; |
| 384 | __be16 num_dup_tsns; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | sctp_sack_variable_t variable[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 386 | } sctp_sackhdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | typedef struct sctp_sack_chunk { |
| 389 | sctp_chunkhdr_t chunk_hdr; |
| 390 | sctp_sackhdr_t sack_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 391 | } sctp_sack_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | |
| 394 | /* RFC 2960. Section 3.3.5 Heartbeat Request (HEARTBEAT) (4): |
| 395 | * |
| 396 | * An endpoint should send this chunk to its peer endpoint to probe the |
| 397 | * reachability of a particular destination transport address defined in |
| 398 | * the present association. |
| 399 | */ |
| 400 | |
| 401 | typedef struct sctp_heartbeathdr { |
| 402 | sctp_paramhdr_t info; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 403 | } sctp_heartbeathdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | typedef struct sctp_heartbeat_chunk { |
| 406 | sctp_chunkhdr_t chunk_hdr; |
| 407 | sctp_heartbeathdr_t hb_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 408 | } sctp_heartbeat_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | |
| 411 | /* For the abort and shutdown ACK we must carry the init tag in the |
| 412 | * common header. Just the common header is all that is needed with a |
| 413 | * chunk descriptor. |
| 414 | */ |
| 415 | typedef struct sctp_abort_chunk { |
| 416 | sctp_chunkhdr_t uh; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 417 | } sctp_abort_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | |
| 419 | |
| 420 | /* For the graceful shutdown we must carry the tag (in common header) |
| 421 | * and the highest consecutive acking value. |
| 422 | */ |
| 423 | typedef struct sctp_shutdownhdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 424 | __be32 cum_tsn_ack; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 425 | } sctp_shutdownhdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
| 427 | struct sctp_shutdown_chunk_t { |
| 428 | sctp_chunkhdr_t chunk_hdr; |
| 429 | sctp_shutdownhdr_t shutdown_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 430 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* RFC 2960. Section 3.3.10 Operation Error (ERROR) (9) */ |
| 433 | |
| 434 | typedef struct sctp_errhdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 435 | __be16 cause; |
| 436 | __be16 length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | __u8 variable[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 438 | } sctp_errhdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | typedef struct sctp_operr_chunk { |
| 441 | sctp_chunkhdr_t chunk_hdr; |
| 442 | sctp_errhdr_t err_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 443 | } sctp_operr_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
| 445 | /* RFC 2960 3.3.10 - Operation Error |
| 446 | * |
| 447 | * Cause Code: 16 bits (unsigned integer) |
| 448 | * |
| 449 | * Defines the type of error conditions being reported. |
| 450 | * Cause Code |
| 451 | * Value Cause Code |
| 452 | * --------- ---------------- |
| 453 | * 1 Invalid Stream Identifier |
| 454 | * 2 Missing Mandatory Parameter |
| 455 | * 3 Stale Cookie Error |
| 456 | * 4 Out of Resource |
| 457 | * 5 Unresolvable Address |
| 458 | * 6 Unrecognized Chunk Type |
| 459 | * 7 Invalid Mandatory Parameter |
| 460 | * 8 Unrecognized Parameters |
| 461 | * 9 No User Data |
| 462 | * 10 Cookie Received While Shutting Down |
| 463 | */ |
| 464 | typedef enum { |
| 465 | |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 466 | SCTP_ERROR_NO_ERROR = cpu_to_be16(0x00), |
| 467 | SCTP_ERROR_INV_STRM = cpu_to_be16(0x01), |
| 468 | SCTP_ERROR_MISS_PARAM = cpu_to_be16(0x02), |
| 469 | SCTP_ERROR_STALE_COOKIE = cpu_to_be16(0x03), |
| 470 | SCTP_ERROR_NO_RESOURCE = cpu_to_be16(0x04), |
| 471 | SCTP_ERROR_DNS_FAILED = cpu_to_be16(0x05), |
| 472 | SCTP_ERROR_UNKNOWN_CHUNK = cpu_to_be16(0x06), |
| 473 | SCTP_ERROR_INV_PARAM = cpu_to_be16(0x07), |
| 474 | SCTP_ERROR_UNKNOWN_PARAM = cpu_to_be16(0x08), |
| 475 | SCTP_ERROR_NO_DATA = cpu_to_be16(0x09), |
| 476 | SCTP_ERROR_COOKIE_IN_SHUTDOWN = cpu_to_be16(0x0a), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
| 478 | |
| 479 | /* SCTP Implementation Guide: |
| 480 | * 11 Restart of an association with new addresses |
| 481 | * 12 User Initiated Abort |
| 482 | * 13 Protocol Violation |
| 483 | */ |
| 484 | |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 485 | SCTP_ERROR_RESTART = cpu_to_be16(0x0b), |
| 486 | SCTP_ERROR_USER_ABORT = cpu_to_be16(0x0c), |
| 487 | SCTP_ERROR_PROTO_VIOLATION = cpu_to_be16(0x0d), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | |
| 489 | /* ADDIP Section 3.3 New Error Causes |
| 490 | * |
| 491 | * Four new Error Causes are added to the SCTP Operational Errors, |
| 492 | * primarily for use in the ASCONF-ACK chunk. |
| 493 | * |
| 494 | * Value Cause Code |
| 495 | * --------- ---------------- |
Wei Yongjun | a84db79 | 2009-04-07 15:41:39 +0800 | [diff] [blame] | 496 | * 0x00A0 Request to Delete Last Remaining IP Address. |
| 497 | * 0x00A1 Operation Refused Due to Resource Shortage. |
| 498 | * 0x00A2 Request to Delete Source IP Address. |
| 499 | * 0x00A3 Association Aborted due to illegal ASCONF-ACK |
| 500 | * 0x00A4 Request refused - no authorization. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | */ |
Wei Yongjun | a84db79 | 2009-04-07 15:41:39 +0800 | [diff] [blame] | 502 | SCTP_ERROR_DEL_LAST_IP = cpu_to_be16(0x00A0), |
| 503 | SCTP_ERROR_RSRC_LOW = cpu_to_be16(0x00A1), |
| 504 | SCTP_ERROR_DEL_SRC_IP = cpu_to_be16(0x00A2), |
| 505 | SCTP_ERROR_ASCONF_ACK = cpu_to_be16(0x00A3), |
| 506 | SCTP_ERROR_REQ_REFUSED = cpu_to_be16(0x00A4), |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 507 | |
| 508 | /* AUTH Section 4. New Error Cause |
| 509 | * |
| 510 | * This section defines a new error cause that will be sent if an AUTH |
| 511 | * chunk is received with an unsupported HMAC identifier. |
| 512 | * illustrates the new error cause. |
| 513 | * |
| 514 | * Cause Code Error Cause Name |
| 515 | * -------------------------------------------------------------- |
| 516 | * 0x0105 Unsupported HMAC Identifier |
| 517 | */ |
Harvey Harrison | f3a7c66 | 2009-02-14 22:58:35 -0800 | [diff] [blame] | 518 | SCTP_ERROR_UNSUP_HMAC = cpu_to_be16(0x0105) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | } sctp_error_t; |
| 520 | |
| 521 | |
| 522 | |
| 523 | /* RFC 2960. Appendix A. Explicit Congestion Notification. |
| 524 | * Explicit Congestion Notification Echo (ECNE) (12) |
| 525 | */ |
| 526 | typedef struct sctp_ecnehdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 527 | __be32 lowest_tsn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } sctp_ecnehdr_t; |
| 529 | |
| 530 | typedef struct sctp_ecne_chunk { |
| 531 | sctp_chunkhdr_t chunk_hdr; |
| 532 | sctp_ecnehdr_t ence_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 533 | } sctp_ecne_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | /* RFC 2960. Appendix A. Explicit Congestion Notification. |
| 536 | * Congestion Window Reduced (CWR) (13) |
| 537 | */ |
| 538 | typedef struct sctp_cwrhdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 539 | __be32 lowest_tsn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } sctp_cwrhdr_t; |
| 541 | |
| 542 | typedef struct sctp_cwr_chunk { |
| 543 | sctp_chunkhdr_t chunk_hdr; |
| 544 | sctp_cwrhdr_t cwr_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 545 | } sctp_cwr_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
| 547 | /* PR-SCTP |
| 548 | * 3.2 Forward Cumulative TSN Chunk Definition (FORWARD TSN) |
| 549 | * |
| 550 | * Forward Cumulative TSN chunk has the following format: |
| 551 | * |
| 552 | * 0 1 2 3 |
| 553 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 554 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 555 | * | Type = 192 | Flags = 0x00 | Length = Variable | |
| 556 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 557 | * | New Cumulative TSN | |
| 558 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 559 | * | Stream-1 | Stream Sequence-1 | |
| 560 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 561 | * \ / |
| 562 | * / \ |
| 563 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 564 | * | Stream-N | Stream Sequence-N | |
| 565 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 566 | * |
| 567 | * Chunk Flags: |
| 568 | * |
| 569 | * Set to all zeros on transmit and ignored on receipt. |
| 570 | * |
| 571 | * New Cumulative TSN: 32 bit u_int |
| 572 | * |
| 573 | * This indicates the new cumulative TSN to the data receiver. Upon |
| 574 | * the reception of this value, the data receiver MUST consider |
| 575 | * any missing TSNs earlier than or equal to this value as received |
| 576 | * and stop reporting them as gaps in any subsequent SACKs. |
| 577 | * |
| 578 | * Stream-N: 16 bit u_int |
| 579 | * |
| 580 | * This field holds a stream number that was skipped by this |
| 581 | * FWD-TSN. |
| 582 | * |
| 583 | * Stream Sequence-N: 16 bit u_int |
| 584 | * This field holds the sequence number associated with the stream |
| 585 | * that was skipped. The stream sequence field holds the largest stream |
| 586 | * sequence number in this stream being skipped. The receiver of |
| 587 | * the FWD-TSN's can use the Stream-N and Stream Sequence-N fields |
| 588 | * to enable delivery of any stranded TSN's that remain on the stream |
| 589 | * re-ordering queues. This field MUST NOT report TSN's corresponding |
| 590 | * to DATA chunk that are marked as unordered. For ordered DATA |
| 591 | * chunks this field MUST be filled in. |
| 592 | */ |
| 593 | struct sctp_fwdtsn_skip { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 594 | __be16 stream; |
| 595 | __be16 ssn; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 596 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
| 598 | struct sctp_fwdtsn_hdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 599 | __be32 new_cum_tsn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | struct sctp_fwdtsn_skip skip[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 601 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | struct sctp_fwdtsn_chunk { |
| 604 | struct sctp_chunkhdr chunk_hdr; |
| 605 | struct sctp_fwdtsn_hdr fwdtsn_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 606 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
| 608 | |
| 609 | /* ADDIP |
| 610 | * Section 3.1.1 Address Configuration Change Chunk (ASCONF) |
| 611 | * |
| 612 | * Serial Number: 32 bits (unsigned integer) |
| 613 | * This value represents a Serial Number for the ASCONF Chunk. The |
| 614 | * valid range of Serial Number is from 0 to 2^32-1. |
| 615 | * Serial Numbers wrap back to 0 after reaching 2^32 -1. |
| 616 | * |
| 617 | * Address Parameter: 8 or 20 bytes (depending on type) |
| 618 | * The address is an address of the sender of the ASCONF chunk, |
| 619 | * the address MUST be considered part of the association by the |
| 620 | * peer endpoint. This field may be used by the receiver of the |
| 621 | * ASCONF to help in finding the association. This parameter MUST |
| 622 | * be present in every ASCONF message i.e. it is a mandatory TLV |
| 623 | * parameter. |
| 624 | * |
| 625 | * ASCONF Parameter: TLV format |
| 626 | * Each Address configuration change is represented by a TLV |
| 627 | * parameter as defined in Section 3.2. One or more requests may |
| 628 | * be present in an ASCONF Chunk. |
| 629 | * |
| 630 | * Section 3.1.2 Address Configuration Acknowledgement Chunk (ASCONF-ACK) |
| 631 | * |
| 632 | * Serial Number: 32 bits (unsigned integer) |
| 633 | * This value represents the Serial Number for the received ASCONF |
| 634 | * Chunk that is acknowledged by this chunk. This value is copied |
| 635 | * from the received ASCONF Chunk. |
| 636 | * |
| 637 | * ASCONF Parameter Response: TLV format |
| 638 | * The ASCONF Parameter Response is used in the ASCONF-ACK to |
| 639 | * report status of ASCONF processing. |
| 640 | */ |
| 641 | typedef struct sctp_addip_param { |
| 642 | sctp_paramhdr_t param_hdr; |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 643 | __be32 crr_id; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 644 | } sctp_addip_param_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
| 646 | typedef struct sctp_addiphdr { |
Al Viro | f3ffaf1 | 2006-11-20 16:59:12 -0800 | [diff] [blame] | 647 | __be32 serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | __u8 params[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 649 | } sctp_addiphdr_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
| 651 | typedef struct sctp_addip_chunk { |
| 652 | sctp_chunkhdr_t chunk_hdr; |
| 653 | sctp_addiphdr_t addip_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 654 | } sctp_addip_chunk_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 656 | /* AUTH |
| 657 | * Section 4.1 Authentication Chunk (AUTH) |
| 658 | * |
| 659 | * This chunk is used to hold the result of the HMAC calculation. |
| 660 | * |
| 661 | * 0 1 2 3 |
| 662 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 663 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 664 | * | Type = 0x0F | Flags=0 | Length | |
| 665 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 666 | * | Shared Key Identifier | HMAC Identifier | |
| 667 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 668 | * | | |
| 669 | * \ HMAC / |
| 670 | * / \ |
| 671 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 672 | * |
| 673 | * Type: 1 byte (unsigned integer) |
| 674 | * This value MUST be set to 0x0F for all AUTH-chunks. |
| 675 | * |
| 676 | * Flags: 1 byte (unsigned integer) |
| 677 | * Set to zero on transmit and ignored on receipt. |
| 678 | * |
| 679 | * Length: 2 bytes (unsigned integer) |
| 680 | * This value holds the length of the HMAC in bytes plus 8. |
| 681 | * |
| 682 | * Shared Key Identifier: 2 bytes (unsigned integer) |
| 683 | * This value describes which endpoint pair shared key is used. |
| 684 | * |
| 685 | * HMAC Identifier: 2 bytes (unsigned integer) |
| 686 | * This value describes which message digest is being used. Table 2 |
| 687 | * shows the currently defined values. |
| 688 | * |
| 689 | * The following Table 2 shows the currently defined values for HMAC |
| 690 | * identifiers. |
| 691 | * |
| 692 | * +-----------------+--------------------------+ |
| 693 | * | HMAC Identifier | Message Digest Algorithm | |
| 694 | * +-----------------+--------------------------+ |
| 695 | * | 0 | Reserved | |
| 696 | * | 1 | SHA-1 defined in [8] | |
| 697 | * | 2 | Reserved | |
| 698 | * | 3 | SHA-256 defined in [8] | |
| 699 | * +-----------------+--------------------------+ |
| 700 | * |
| 701 | * |
| 702 | * HMAC: n bytes (unsigned integer) This hold the result of the HMAC |
| 703 | * calculation. |
| 704 | */ |
| 705 | typedef struct sctp_authhdr { |
| 706 | __be16 shkey_id; |
| 707 | __be16 hmac_id; |
| 708 | __u8 hmac[0]; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 709 | } sctp_authhdr_t; |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 710 | |
| 711 | typedef struct sctp_auth_chunk { |
| 712 | sctp_chunkhdr_t chunk_hdr; |
| 713 | sctp_authhdr_t auth_hdr; |
Marcelo Ricardo Leitner | 85c727b | 2017-02-07 11:37:56 -0200 | [diff] [blame] | 714 | } sctp_auth_chunk_t; |
Vlad Yasevich | f7b0e93 | 2007-09-16 19:26:06 -0700 | [diff] [blame] | 715 | |
Xin Long | 52c52a6 | 2016-04-14 15:35:30 +0800 | [diff] [blame] | 716 | struct sctp_infox { |
| 717 | struct sctp_info *sctpinfo; |
| 718 | struct sctp_association *asoc; |
| 719 | }; |
| 720 | |
Xin Long | cc16f00 | 2017-01-18 00:44:42 +0800 | [diff] [blame] | 721 | struct sctp_reconf_chunk { |
| 722 | sctp_chunkhdr_t chunk_hdr; |
| 723 | __u8 params[0]; |
Xin Long | 9faf1c0 | 2017-02-09 01:18:15 +0800 | [diff] [blame] | 724 | }; |
Xin Long | cc16f00 | 2017-01-18 00:44:42 +0800 | [diff] [blame] | 725 | |
| 726 | struct sctp_strreset_outreq { |
| 727 | sctp_paramhdr_t param_hdr; |
| 728 | __u32 request_seq; |
| 729 | __u32 response_seq; |
| 730 | __u32 send_reset_at_tsn; |
| 731 | __u16 list_of_streams[0]; |
Xin Long | 9faf1c0 | 2017-02-09 01:18:15 +0800 | [diff] [blame] | 732 | }; |
Xin Long | cc16f00 | 2017-01-18 00:44:42 +0800 | [diff] [blame] | 733 | |
| 734 | struct sctp_strreset_inreq { |
| 735 | sctp_paramhdr_t param_hdr; |
| 736 | __u32 request_seq; |
| 737 | __u16 list_of_streams[0]; |
Xin Long | 9faf1c0 | 2017-02-09 01:18:15 +0800 | [diff] [blame] | 738 | }; |
Xin Long | cc16f00 | 2017-01-18 00:44:42 +0800 | [diff] [blame] | 739 | |
Xin Long | c56480a | 2017-02-09 01:18:17 +0800 | [diff] [blame] | 740 | struct sctp_strreset_tsnreq { |
| 741 | sctp_paramhdr_t param_hdr; |
| 742 | __u32 request_seq; |
| 743 | }; |
| 744 | |
Xin Long | 7809811 | 2017-02-09 01:18:19 +0800 | [diff] [blame] | 745 | struct sctp_strreset_addstrm { |
| 746 | sctp_paramhdr_t param_hdr; |
| 747 | __u32 request_seq; |
| 748 | __u16 number_of_streams; |
| 749 | __u16 reserved; |
| 750 | }; |
| 751 | |
Xin Long | bd4b9f8 | 2017-02-17 12:45:37 +0800 | [diff] [blame] | 752 | enum { |
| 753 | SCTP_STRRESET_NOTHING_TO_DO = 0x00, |
| 754 | SCTP_STRRESET_PERFORMED = 0x01, |
| 755 | SCTP_STRRESET_DENIED = 0x02, |
| 756 | SCTP_STRRESET_ERR_WRONG_SSN = 0x03, |
| 757 | SCTP_STRRESET_ERR_IN_PROGRESS = 0x04, |
| 758 | SCTP_STRRESET_ERR_BAD_SEQNO = 0x05, |
| 759 | SCTP_STRRESET_IN_PROGRESS = 0x06, |
| 760 | }; |
| 761 | |
| 762 | struct sctp_strreset_resp { |
| 763 | sctp_paramhdr_t param_hdr; |
| 764 | __u32 response_seq; |
| 765 | __u32 result; |
| 766 | }; |
| 767 | |
| 768 | struct sctp_strreset_resptsn { |
| 769 | sctp_paramhdr_t param_hdr; |
| 770 | __u32 response_seq; |
| 771 | __u32 result; |
| 772 | __u32 senders_next_tsn; |
| 773 | __u32 receivers_next_tsn; |
| 774 | }; |
| 775 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | #endif /* __LINUX_SCTP_H__ */ |