1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2 /* SCTP kernel implementation 3 * (C) Copyright IBM Corp. 2001, 2004 4 * Copyright (c) 1999-2000 Cisco, Inc. 5 * Copyright (c) 1999-2001 Motorola, Inc. 6 * Copyright (c) 2002 Intel Corp. 7 * 8 * This file is part of the SCTP kernel implementation 9 * 10 * This header represents the structures and constants needed to support 11 * the SCTP Extension to the Sockets API. 12 * 13 * This SCTP implementation is free software; 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 * 19 * This SCTP implementation is distributed in the hope that it 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 26 * along with GNU CC; see the file COPYING. If not, see 27 * <http://www.gnu.org/licenses/>. 28 * 29 * Please send any bug reports or fixes you make to the 30 * email address(es): 31 * lksctp developers <linux-sctp@vger.kernel.org> 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 * R. Stewart <randall@sctp.chicago.il.us> 39 * K. Morneau <kmorneau@cisco.com> 40 * Q. Xie <qxie1@email.mot.com> 41 * Karl Knutson <karl@athena.chicago.il.us> 42 * Jon Grimm <jgrimm@us.ibm.com> 43 * Daisy Chang <daisyc@us.ibm.com> 44 * Ryan Layer <rmlayer@us.ibm.com> 45 * Ardelle Fan <ardelle.fan@intel.com> 46 * Sridhar Samudrala <sri@us.ibm.com> 47 * Inaky Perez-Gonzalez <inaky.gonzalez@intel.com> 48 * Vlad Yasevich <vladislav.yasevich@hp.com> 49 * 50 * Any bugs reported given to us we will try to fix... any fixes shared will 51 * be incorporated into the next SCTP release. 52 */ 53 54 #ifndef _UAPI_SCTP_H 55 #define _UAPI_SCTP_H 56 57 #include <linux/types.h> 58 #include <linux/socket.h> 59 60 typedef int32_t sctp_assoc_t; 61 62 #define SCTP_FUTURE_ASSOC 0 63 #define SCTP_CURRENT_ASSOC 1 64 #define SCTP_ALL_ASSOC 2 65 66 /* The following symbols come from the Sockets API Extensions for 67 * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>. 68 */ 69 #define SCTP_RTOINFO 0 70 #define SCTP_ASSOCINFO 1 71 #define SCTP_INITMSG 2 72 #define SCTP_NODELAY 3 /* Get/set nodelay option. */ 73 #define SCTP_AUTOCLOSE 4 74 #define SCTP_SET_PEER_PRIMARY_ADDR 5 75 #define SCTP_PRIMARY_ADDR 6 76 #define SCTP_ADAPTATION_LAYER 7 77 #define SCTP_DISABLE_FRAGMENTS 8 78 #define SCTP_PEER_ADDR_PARAMS 9 79 #define SCTP_DEFAULT_SEND_PARAM 10 80 #define SCTP_EVENTS 11 81 #define SCTP_I_WANT_MAPPED_V4_ADDR 12 /* Turn on/off mapped v4 addresses */ 82 #define SCTP_MAXSEG 13 /* Get/set maximum fragment. */ 83 #define SCTP_STATUS 14 84 #define SCTP_GET_PEER_ADDR_INFO 15 85 #define SCTP_DELAYED_ACK_TIME 16 86 #define SCTP_DELAYED_ACK SCTP_DELAYED_ACK_TIME 87 #define SCTP_DELAYED_SACK SCTP_DELAYED_ACK_TIME 88 #define SCTP_CONTEXT 17 89 #define SCTP_FRAGMENT_INTERLEAVE 18 90 #define SCTP_PARTIAL_DELIVERY_POINT 19 /* Set/Get partial delivery point */ 91 #define SCTP_MAX_BURST 20 /* Set/Get max burst */ 92 #define SCTP_AUTH_CHUNK 21 /* Set only: add a chunk type to authenticate */ 93 #define SCTP_HMAC_IDENT 22 94 #define SCTP_AUTH_KEY 23 95 #define SCTP_AUTH_ACTIVE_KEY 24 96 #define SCTP_AUTH_DELETE_KEY 25 97 #define SCTP_PEER_AUTH_CHUNKS 26 /* Read only */ 98 #define SCTP_LOCAL_AUTH_CHUNKS 27 /* Read only */ 99 #define SCTP_GET_ASSOC_NUMBER 28 /* Read only */ 100 #define SCTP_GET_ASSOC_ID_LIST 29 /* Read only */ 101 #define SCTP_AUTO_ASCONF 30 102 #define SCTP_PEER_ADDR_THLDS 31 103 #define SCTP_RECVRCVINFO 32 104 #define SCTP_RECVNXTINFO 33 105 #define SCTP_DEFAULT_SNDINFO 34 106 #define SCTP_AUTH_DEACTIVATE_KEY 35 107 #define SCTP_REUSE_PORT 36 108 #define SCTP_PEER_ADDR_THLDS_V2 37 109 110 /* Internal Socket Options. Some of the sctp library functions are 111 * implemented using these socket options. 112 */ 113 #define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */ 114 #define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */ 115 #define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */ 116 /* Options 104-106 are deprecated and removed. Do not use this space */ 117 #define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */ 118 #define SCTP_GET_PEER_ADDRS 108 /* Get all peer address. */ 119 #define SCTP_GET_LOCAL_ADDRS 109 /* Get all local address. */ 120 #define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */ 121 #define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */ 122 #define SCTP_GET_ASSOC_STATS 112 /* Read only */ 123 #define SCTP_PR_SUPPORTED 113 124 #define SCTP_DEFAULT_PRINFO 114 125 #define SCTP_PR_ASSOC_STATUS 115 126 #define SCTP_PR_STREAM_STATUS 116 127 #define SCTP_RECONFIG_SUPPORTED 117 128 #define SCTP_ENABLE_STREAM_RESET 118 129 #define SCTP_RESET_STREAMS 119 130 #define SCTP_RESET_ASSOC 120 131 #define SCTP_ADD_STREAMS 121 132 #define SCTP_SOCKOPT_PEELOFF_FLAGS 122 133 #define SCTP_STREAM_SCHEDULER 123 134 #define SCTP_STREAM_SCHEDULER_VALUE 124 135 #define SCTP_INTERLEAVING_SUPPORTED 125 136 #define SCTP_SENDMSG_CONNECT 126 137 #define SCTP_EVENT 127 138 #define SCTP_ASCONF_SUPPORTED 128 139 #define SCTP_AUTH_SUPPORTED 129 140 #define SCTP_ECN_SUPPORTED 130 141 #define SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 131 142 #define SCTP_EXPOSE_PF_STATE SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 143 #define SCTP_REMOTE_UDP_ENCAPS_PORT 132 144 145 /* PR-SCTP policies */ 146 #define SCTP_PR_SCTP_NONE 0x0000 147 #define SCTP_PR_SCTP_TTL 0x0010 148 #define SCTP_PR_SCTP_RTX 0x0020 149 #define SCTP_PR_SCTP_PRIO 0x0030 150 #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_PRIO 151 #define SCTP_PR_SCTP_MASK 0x0030 152 153 #define __SCTP_PR_INDEX(x) ((x >> 4) - 1) 154 #define SCTP_PR_INDEX(x) __SCTP_PR_INDEX(SCTP_PR_SCTP_ ## x) 155 156 #define SCTP_PR_POLICY(x) ((x) & SCTP_PR_SCTP_MASK) 157 #define SCTP_PR_SET_POLICY(flags, x) \ 158 do { \ 159 flags &= ~SCTP_PR_SCTP_MASK; \ 160 flags |= x; \ 161 } while (0) 162 163 #define SCTP_PR_TTL_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_TTL) 164 #define SCTP_PR_RTX_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_RTX) 165 #define SCTP_PR_PRIO_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_PRIO) 166 167 /* For enable stream reset */ 168 #define SCTP_ENABLE_RESET_STREAM_REQ 0x01 169 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x02 170 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x04 171 #define SCTP_ENABLE_STRRESET_MASK 0x07 172 173 #define SCTP_STREAM_RESET_INCOMING 0x01 174 #define SCTP_STREAM_RESET_OUTGOING 0x02 175 176 /* These are bit fields for msghdr->msg_flags. See section 5.1. */ 177 /* On user space Linux, these live in <bits/socket.h> as an enum. */ 178 enum sctp_msg_flags { 179 MSG_NOTIFICATION = 0x8000, 180 #define MSG_NOTIFICATION MSG_NOTIFICATION 181 }; 182 183 /* 5.3.1 SCTP Initiation Structure (SCTP_INIT) 184 * 185 * This cmsghdr structure provides information for initializing new 186 * SCTP associations with sendmsg(). The SCTP_INITMSG socket option 187 * uses this same data structure. This structure is not used for 188 * recvmsg(). 189 * 190 * cmsg_level cmsg_type cmsg_data[] 191 * ------------ ------------ ---------------------- 192 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg 193 */ 194 struct sctp_initmsg { 195 uint16_t sinit_num_ostreams; 196 uint16_t sinit_max_instreams; 197 uint16_t sinit_max_attempts; 198 uint16_t sinit_max_init_timeo; 199 }; 200 201 /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV) 202 * 203 * This cmsghdr structure specifies SCTP options for sendmsg() and 204 * describes SCTP header information about a received message through 205 * recvmsg(). 206 * 207 * cmsg_level cmsg_type cmsg_data[] 208 * ------------ ------------ ---------------------- 209 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo 210 */ 211 struct sctp_sndrcvinfo { 212 uint16_t sinfo_stream; 213 uint16_t sinfo_ssn; 214 uint16_t sinfo_flags; 215 uint32_t sinfo_ppid; 216 uint32_t sinfo_context; 217 uint32_t sinfo_timetolive; 218 uint32_t sinfo_tsn; 219 uint32_t sinfo_cumtsn; 220 sctp_assoc_t sinfo_assoc_id; 221 }; 222 223 /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO) 224 * 225 * This cmsghdr structure specifies SCTP options for sendmsg(). 226 * 227 * cmsg_level cmsg_type cmsg_data[] 228 * ------------ ------------ ------------------- 229 * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo 230 */ 231 struct sctp_sndinfo { 232 uint16_t snd_sid; 233 uint16_t snd_flags; 234 uint32_t snd_ppid; 235 uint32_t snd_context; 236 sctp_assoc_t snd_assoc_id; 237 }; 238 239 /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO) 240 * 241 * This cmsghdr structure describes SCTP receive information 242 * about a received message through recvmsg(). 243 * 244 * cmsg_level cmsg_type cmsg_data[] 245 * ------------ ------------ ------------------- 246 * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo 247 */ 248 struct sctp_rcvinfo { 249 uint16_t rcv_sid; 250 uint16_t rcv_ssn; 251 uint16_t rcv_flags; 252 uint32_t rcv_ppid; 253 uint32_t rcv_tsn; 254 uint32_t rcv_cumtsn; 255 uint32_t rcv_context; 256 sctp_assoc_t rcv_assoc_id; 257 }; 258 259 /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO) 260 * 261 * This cmsghdr structure describes SCTP receive information 262 * of the next message that will be delivered through recvmsg() 263 * if this information is already available when delivering 264 * the current message. 265 * 266 * cmsg_level cmsg_type cmsg_data[] 267 * ------------ ------------ ------------------- 268 * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo 269 */ 270 struct sctp_nxtinfo { 271 uint16_t nxt_sid; 272 uint16_t nxt_flags; 273 uint32_t nxt_ppid; 274 uint32_t nxt_length; 275 sctp_assoc_t nxt_assoc_id; 276 }; 277 278 /* 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO) 279 * 280 * This cmsghdr structure specifies SCTP options for sendmsg(). 281 * 282 * cmsg_level cmsg_type cmsg_data[] 283 * ------------ ------------ ------------------- 284 * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo 285 */ 286 struct sctp_prinfo { 287 uint16_t pr_policy; 288 uint32_t pr_value; 289 }; 290 291 /* 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO) 292 * 293 * This cmsghdr structure specifies SCTP options for sendmsg(). 294 * 295 * cmsg_level cmsg_type cmsg_data[] 296 * ------------ ------------ ------------------- 297 * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo 298 */ 299 struct sctp_authinfo { 300 uint16_t auth_keynumber; 301 }; 302 303 /* 304 * sinfo_flags: 16 bits (unsigned integer) 305 * 306 * This field may contain any of the following flags and is composed of 307 * a bitwise OR of these values. 308 */ 309 enum sctp_sinfo_flags { 310 SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */ 311 SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */ 312 SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */ 313 SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */ 314 /* 2 bits here have been used by SCTP_PR_SCTP_MASK */ 315 SCTP_SENDALL = (1 << 6), 316 SCTP_PR_SCTP_ALL = (1 << 7), 317 SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */ 318 SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */ 319 }; 320 321 typedef union { 322 uint8_t raw; 323 struct sctp_initmsg init; 324 struct sctp_sndrcvinfo sndrcv; 325 } sctp_cmsg_data_t; 326 327 /* These are cmsg_types. */ 328 typedef enum sctp_cmsg_type { 329 SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ 330 #define SCTP_INIT SCTP_INIT 331 SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ 332 #define SCTP_SNDRCV SCTP_SNDRCV 333 SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */ 334 #define SCTP_SNDINFO SCTP_SNDINFO 335 SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */ 336 #define SCTP_RCVINFO SCTP_RCVINFO 337 SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */ 338 #define SCTP_NXTINFO SCTP_NXTINFO 339 SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */ 340 #define SCTP_PRINFO SCTP_PRINFO 341 SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure */ 342 #define SCTP_AUTHINFO SCTP_AUTHINFO 343 SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */ 344 #define SCTP_DSTADDRV4 SCTP_DSTADDRV4 345 SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */ 346 #define SCTP_DSTADDRV6 SCTP_DSTADDRV6 347 } sctp_cmsg_t; 348 349 /* 350 * 5.3.1.1 SCTP_ASSOC_CHANGE 351 * 352 * Communication notifications inform the ULP that an SCTP association 353 * has either begun or ended. The identifier for a new association is 354 * provided by this notificaion. The notification information has the 355 * following format: 356 * 357 */ 358 struct sctp_assoc_change { 359 uint16_t sac_type; 360 uint16_t sac_flags; 361 uint32_t sac_length; 362 uint16_t sac_state; 363 uint16_t sac_error; 364 uint16_t sac_outbound_streams; 365 uint16_t sac_inbound_streams; 366 sctp_assoc_t sac_assoc_id; 367 uint8_t sac_info[0]; 368 }; 369 370 /* 371 * sac_state: 32 bits (signed integer) 372 * 373 * This field holds one of a number of values that communicate the 374 * event that happened to the association. They include: 375 * 376 * Note: The following state names deviate from the API draft as 377 * the names clash too easily with other kernel symbols. 378 */ 379 enum sctp_sac_state { 380 SCTP_COMM_UP, 381 SCTP_COMM_LOST, 382 SCTP_RESTART, 383 SCTP_SHUTDOWN_COMP, 384 SCTP_CANT_STR_ASSOC, 385 }; 386 387 /* 388 * 5.3.1.2 SCTP_PEER_ADDR_CHANGE 389 * 390 * When a destination address on a multi-homed peer encounters a change 391 * an interface details event is sent. The information has the 392 * following structure: 393 */ 394 struct sctp_paddr_change { 395 uint16_t spc_type; 396 uint16_t spc_flags; 397 uint32_t spc_length; 398 struct sockaddr_storage spc_aaddr; 399 int spc_state; 400 int spc_error; 401 sctp_assoc_t spc_assoc_id; 402 } __attribute__((packed, aligned(4))); 403 404 /* 405 * spc_state: 32 bits (signed integer) 406 * 407 * This field holds one of a number of values that communicate the 408 * event that happened to the address. They include: 409 */ 410 enum sctp_spc_state { 411 SCTP_ADDR_AVAILABLE, 412 SCTP_ADDR_UNREACHABLE, 413 SCTP_ADDR_REMOVED, 414 SCTP_ADDR_ADDED, 415 SCTP_ADDR_MADE_PRIM, 416 SCTP_ADDR_CONFIRMED, 417 SCTP_ADDR_POTENTIALLY_FAILED, 418 #define SCTP_ADDR_PF SCTP_ADDR_POTENTIALLY_FAILED 419 }; 420 421 422 /* 423 * 5.3.1.3 SCTP_REMOTE_ERROR 424 * 425 * A remote peer may send an Operational Error message to its peer. 426 * This message indicates a variety of error conditions on an 427 * association. The entire error TLV as it appears on the wire is 428 * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP 429 * specification [SCTP] and any extensions for a list of possible 430 * error formats. SCTP error TLVs have the format: 431 */ 432 struct sctp_remote_error { 433 uint16_t sre_type; 434 uint16_t sre_flags; 435 uint32_t sre_length; 436 uint16_t sre_error; 437 sctp_assoc_t sre_assoc_id; 438 uint8_t sre_data[0]; 439 }; 440 441 442 /* 443 * 5.3.1.4 SCTP_SEND_FAILED 444 * 445 * If SCTP cannot deliver a message it may return the message as a 446 * notification. 447 */ 448 struct sctp_send_failed { 449 uint16_t ssf_type; 450 uint16_t ssf_flags; 451 uint32_t ssf_length; 452 uint32_t ssf_error; 453 struct sctp_sndrcvinfo ssf_info; 454 sctp_assoc_t ssf_assoc_id; 455 uint8_t ssf_data[0]; 456 }; 457 458 struct sctp_send_failed_event { 459 uint16_t ssf_type; 460 uint16_t ssf_flags; 461 uint32_t ssf_length; 462 uint32_t ssf_error; 463 struct sctp_sndinfo ssfe_info; 464 sctp_assoc_t ssf_assoc_id; 465 uint8_t ssf_data[0]; 466 }; 467 468 /* 469 * ssf_flags: 16 bits (unsigned integer) 470 * 471 * The flag value will take one of the following values 472 * 473 * SCTP_DATA_UNSENT - Indicates that the data was never put on 474 * the wire. 475 * 476 * SCTP_DATA_SENT - Indicates that the data was put on the wire. 477 * Note that this does not necessarily mean that the 478 * data was (or was not) successfully delivered. 479 */ 480 enum sctp_ssf_flags { 481 SCTP_DATA_UNSENT, 482 SCTP_DATA_SENT, 483 }; 484 485 /* 486 * 5.3.1.5 SCTP_SHUTDOWN_EVENT 487 * 488 * When a peer sends a SHUTDOWN, SCTP delivers this notification to 489 * inform the application that it should cease sending data. 490 */ 491 struct sctp_shutdown_event { 492 uint16_t sse_type; 493 uint16_t sse_flags; 494 uint32_t sse_length; 495 sctp_assoc_t sse_assoc_id; 496 }; 497 498 /* 499 * 5.3.1.6 SCTP_ADAPTATION_INDICATION 500 * 501 * When a peer sends a Adaptation Layer Indication parameter , SCTP 502 * delivers this notification to inform the application 503 * that of the peers requested adaptation layer. 504 */ 505 struct sctp_adaptation_event { 506 uint16_t sai_type; 507 uint16_t sai_flags; 508 uint32_t sai_length; 509 uint32_t sai_adaptation_ind; 510 sctp_assoc_t sai_assoc_id; 511 }; 512 513 /* 514 * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT 515 * 516 * When a receiver is engaged in a partial delivery of a 517 * message this notification will be used to indicate 518 * various events. 519 */ 520 struct sctp_pdapi_event { 521 uint16_t pdapi_type; 522 uint16_t pdapi_flags; 523 uint32_t pdapi_length; 524 uint32_t pdapi_indication; 525 sctp_assoc_t pdapi_assoc_id; 526 uint32_t pdapi_stream; 527 uint32_t pdapi_seq; 528 }; 529 530 enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; 531 532 /* 533 * 5.3.1.8. SCTP_AUTHENTICATION_EVENT 534 * 535 * When a receiver is using authentication this message will provide 536 * notifications regarding new keys being made active as well as errors. 537 */ 538 struct sctp_authkey_event { 539 uint16_t auth_type; 540 uint16_t auth_flags; 541 uint32_t auth_length; 542 uint16_t auth_keynumber; 543 uint16_t auth_altkeynumber; 544 uint32_t auth_indication; 545 sctp_assoc_t auth_assoc_id; 546 }; 547 548 enum { 549 SCTP_AUTH_NEW_KEY, 550 #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY /* compatible with before */ 551 SCTP_AUTH_FREE_KEY, 552 SCTP_AUTH_NO_AUTH, 553 }; 554 555 /* 556 * 6.1.9. SCTP_SENDER_DRY_EVENT 557 * 558 * When the SCTP stack has no more user data to send or retransmit, this 559 * notification is given to the user. Also, at the time when a user app 560 * subscribes to this event, if there is no data to be sent or 561 * retransmit, the stack will immediately send up this notification. 562 */ 563 struct sctp_sender_dry_event { 564 uint16_t sender_dry_type; 565 uint16_t sender_dry_flags; 566 uint32_t sender_dry_length; 567 sctp_assoc_t sender_dry_assoc_id; 568 }; 569 570 #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 571 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 572 #define SCTP_STREAM_RESET_DENIED 0x0004 573 #define SCTP_STREAM_RESET_FAILED 0x0008 574 struct sctp_stream_reset_event { 575 uint16_t strreset_type; 576 uint16_t strreset_flags; 577 uint32_t strreset_length; 578 sctp_assoc_t strreset_assoc_id; 579 uint16_t strreset_stream_list[]; 580 }; 581 582 #define SCTP_ASSOC_RESET_DENIED 0x0004 583 #define SCTP_ASSOC_RESET_FAILED 0x0008 584 struct sctp_assoc_reset_event { 585 uint16_t assocreset_type; 586 uint16_t assocreset_flags; 587 uint32_t assocreset_length; 588 sctp_assoc_t assocreset_assoc_id; 589 uint32_t assocreset_local_tsn; 590 uint32_t assocreset_remote_tsn; 591 }; 592 593 #define SCTP_ASSOC_CHANGE_DENIED 0x0004 594 #define SCTP_ASSOC_CHANGE_FAILED 0x0008 595 #define SCTP_STREAM_CHANGE_DENIED SCTP_ASSOC_CHANGE_DENIED 596 #define SCTP_STREAM_CHANGE_FAILED SCTP_ASSOC_CHANGE_FAILED 597 struct sctp_stream_change_event { 598 uint16_t strchange_type; 599 uint16_t strchange_flags; 600 uint32_t strchange_length; 601 sctp_assoc_t strchange_assoc_id; 602 uint16_t strchange_instrms; 603 uint16_t strchange_outstrms; 604 }; 605 606 /* 607 * Described in Section 7.3 608 * Ancillary Data and Notification Interest Options 609 */ 610 struct sctp_event_subscribe { 611 uint8_t sctp_data_io_event; 612 uint8_t sctp_association_event; 613 uint8_t sctp_address_event; 614 uint8_t sctp_send_failure_event; 615 uint8_t sctp_peer_error_event; 616 uint8_t sctp_shutdown_event; 617 uint8_t sctp_partial_delivery_event; 618 uint8_t sctp_adaptation_layer_event; 619 uint8_t sctp_authentication_event; 620 uint8_t sctp_sender_dry_event; 621 uint8_t sctp_stream_reset_event; 622 uint8_t sctp_assoc_reset_event; 623 uint8_t sctp_stream_change_event; 624 uint8_t sctp_send_failure_event_event; 625 }; 626 627 /* 628 * 5.3.1 SCTP Notification Structure 629 * 630 * The notification structure is defined as the union of all 631 * notification types. 632 * 633 */ 634 union sctp_notification { 635 struct { 636 uint16_t sn_type; /* Notification type. */ 637 uint16_t sn_flags; 638 uint32_t sn_length; 639 } sn_header; 640 struct sctp_assoc_change sn_assoc_change; 641 struct sctp_paddr_change sn_paddr_change; 642 struct sctp_remote_error sn_remote_error; 643 struct sctp_send_failed sn_send_failed; 644 struct sctp_shutdown_event sn_shutdown_event; 645 struct sctp_adaptation_event sn_adaptation_event; 646 struct sctp_pdapi_event sn_pdapi_event; 647 struct sctp_authkey_event sn_authkey_event; 648 struct sctp_sender_dry_event sn_sender_dry_event; 649 struct sctp_stream_reset_event sn_strreset_event; 650 struct sctp_assoc_reset_event sn_assocreset_event; 651 struct sctp_stream_change_event sn_strchange_event; 652 struct sctp_send_failed_event sn_send_failed_event; 653 }; 654 655 /* Section 5.3.1 656 * All standard values for sn_type flags are greater than 2^15. 657 * Values from 2^15 and down are reserved. 658 */ 659 660 enum sctp_sn_type { 661 SCTP_SN_TYPE_BASE = (1<<15), 662 SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE, 663 #define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT 664 SCTP_ASSOC_CHANGE, 665 #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE 666 SCTP_PEER_ADDR_CHANGE, 667 #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE 668 SCTP_SEND_FAILED, 669 #define SCTP_SEND_FAILED SCTP_SEND_FAILED 670 SCTP_REMOTE_ERROR, 671 #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR 672 SCTP_SHUTDOWN_EVENT, 673 #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT 674 SCTP_PARTIAL_DELIVERY_EVENT, 675 #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT 676 SCTP_ADAPTATION_INDICATION, 677 #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION 678 SCTP_AUTHENTICATION_EVENT, 679 #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT 680 SCTP_SENDER_DRY_EVENT, 681 #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT 682 SCTP_STREAM_RESET_EVENT, 683 #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT 684 SCTP_ASSOC_RESET_EVENT, 685 #define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT 686 SCTP_STREAM_CHANGE_EVENT, 687 #define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT 688 SCTP_SEND_FAILED_EVENT, 689 #define SCTP_SEND_FAILED_EVENT SCTP_SEND_FAILED_EVENT 690 SCTP_SN_TYPE_MAX = SCTP_SEND_FAILED_EVENT, 691 #define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX 692 }; 693 694 /* Notification error codes used to fill up the error fields in some 695 * notifications. 696 * SCTP_PEER_ADDRESS_CHAGE : spc_error 697 * SCTP_ASSOC_CHANGE : sac_error 698 * These names should be potentially included in the draft 04 of the SCTP 699 * sockets API specification. 700 */ 701 typedef enum sctp_sn_error { 702 SCTP_FAILED_THRESHOLD, 703 SCTP_RECEIVED_SACK, 704 SCTP_HEARTBEAT_SUCCESS, 705 SCTP_RESPONSE_TO_USER_REQ, 706 SCTP_INTERNAL_ERROR, 707 SCTP_SHUTDOWN_GUARD_EXPIRES, 708 SCTP_PEER_FAULTY, 709 } sctp_sn_int; 710 711 /* 712 * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) 713 * 714 * The protocol parameters used to initialize and bound retransmission 715 * timeout (RTO) are tunable. See [SCTP] for more information on how 716 * these parameters are used in RTO calculation. 717 */ 718 struct sctp_rtoinfo { 719 sctp_assoc_t srto_assoc_id; 720 uint32_t srto_initial; 721 uint32_t srto_max; 722 uint32_t srto_min; 723 }; 724 725 /* 726 * 7.1.2 Association Parameters (SCTP_ASSOCINFO) 727 * 728 * This option is used to both examine and set various association and 729 * endpoint parameters. 730 */ 731 struct sctp_assocparams { 732 sctp_assoc_t sasoc_assoc_id; 733 uint16_t sasoc_asocmaxrxt; 734 uint16_t sasoc_number_peer_destinations; 735 uint32_t sasoc_peer_rwnd; 736 uint32_t sasoc_local_rwnd; 737 uint32_t sasoc_cookie_life; 738 }; 739 740 /* 741 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) 742 * 743 * Requests that the peer mark the enclosed address as the association 744 * primary. The enclosed address must be one of the association's 745 * locally bound addresses. The following structure is used to make a 746 * set primary request: 747 */ 748 struct sctp_setpeerprim { 749 sctp_assoc_t sspp_assoc_id; 750 struct sockaddr_storage sspp_addr; 751 } __attribute__((packed, aligned(4))); 752 753 /* 754 * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) 755 * 756 * Requests that the local SCTP stack use the enclosed peer address as 757 * the association primary. The enclosed address must be one of the 758 * association peer's addresses. The following structure is used to 759 * make a set peer primary request: 760 */ 761 struct sctp_prim { 762 sctp_assoc_t ssp_assoc_id; 763 struct sockaddr_storage ssp_addr; 764 } __attribute__((packed, aligned(4))); 765 766 /* For backward compatibility use, define the old name too */ 767 #define sctp_setprim sctp_prim 768 769 /* 770 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER) 771 * 772 * Requests that the local endpoint set the specified Adaptation Layer 773 * Indication parameter for all future INIT and INIT-ACK exchanges. 774 */ 775 struct sctp_setadaptation { 776 uint32_t ssb_adaptation_ind; 777 }; 778 779 /* 780 * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) 781 * 782 * Applications can enable or disable heartbeats for any peer address 783 * of an association, modify an address's heartbeat interval, force a 784 * heartbeat to be sent immediately, and adjust the address's maximum 785 * number of retransmissions sent before an address is considered 786 * unreachable. The following structure is used to access and modify an 787 * address's parameters: 788 */ 789 enum sctp_spp_flags { 790 SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/ 791 SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/ 792 SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE, 793 SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/ 794 SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/ 795 SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ 796 SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE, 797 SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/ 798 SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/ 799 SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE, 800 SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */ 801 SPP_IPV6_FLOWLABEL = 1<<8, 802 SPP_DSCP = 1<<9, 803 }; 804 805 struct sctp_paddrparams { 806 sctp_assoc_t spp_assoc_id; 807 struct sockaddr_storage spp_address; 808 uint32_t spp_hbinterval; 809 uint16_t spp_pathmaxrxt; 810 uint32_t spp_pathmtu; 811 uint32_t spp_sackdelay; 812 uint32_t spp_flags; 813 uint32_t spp_ipv6_flowlabel; 814 uint8_t spp_dscp; 815 } __attribute__((packed, aligned(4))); 816 817 /* 818 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK) 819 * 820 * This set option adds a chunk type that the user is requesting to be 821 * received only in an authenticated way. Changes to the list of chunks 822 * will only effect future associations on the socket. 823 */ 824 struct sctp_authchunk { 825 uint8_t sauth_chunk; 826 }; 827 828 /* 829 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT) 830 * 831 * This option gets or sets the list of HMAC algorithms that the local 832 * endpoint requires the peer to use. 833 */ 834 #ifndef __KERNEL__ 835 /* This here is only used by user space as is. It might not be a good idea 836 * to export/reveal the whole structure with reserved fields etc. 837 */ 838 enum { 839 SCTP_AUTH_HMAC_ID_SHA1 = 1, 840 SCTP_AUTH_HMAC_ID_SHA256 = 3, 841 }; 842 #endif 843 844 struct sctp_hmacalgo { 845 uint32_t shmac_num_idents; 846 uint16_t shmac_idents[]; 847 }; 848 849 /* Sadly, user and kernel space have different names for 850 * this structure member, so this is to not break anything. 851 */ 852 #define shmac_number_of_idents shmac_num_idents 853 854 /* 855 * 7.1.20. Set a shared key (SCTP_AUTH_KEY) 856 * 857 * This option will set a shared secret key which is used to build an 858 * association shared key. 859 */ 860 struct sctp_authkey { 861 sctp_assoc_t sca_assoc_id; 862 uint16_t sca_keynumber; 863 uint16_t sca_keylength; 864 uint8_t sca_key[]; 865 }; 866 867 /* 868 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY) 869 * 870 * This option will get or set the active shared key to be used to build 871 * the association shared key. 872 */ 873 874 struct sctp_authkeyid { 875 sctp_assoc_t scact_assoc_id; 876 uint16_t scact_keynumber; 877 }; 878 879 880 /* 881 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK) 882 * 883 * This option will effect the way delayed acks are performed. This 884 * option allows you to get or set the delayed ack time, in 885 * milliseconds. It also allows changing the delayed ack frequency. 886 * Changing the frequency to 1 disables the delayed sack algorithm. If 887 * the assoc_id is 0, then this sets or gets the endpoints default 888 * values. If the assoc_id field is non-zero, then the set or get 889 * effects the specified association for the one to many model (the 890 * assoc_id field is ignored by the one to one model). Note that if 891 * sack_delay or sack_freq are 0 when setting this option, then the 892 * current values will remain unchanged. 893 */ 894 struct sctp_sack_info { 895 sctp_assoc_t sack_assoc_id; 896 uint32_t sack_delay; 897 uint32_t sack_freq; 898 }; 899 900 struct sctp_assoc_value { 901 sctp_assoc_t assoc_id; 902 uint32_t assoc_value; 903 }; 904 905 struct sctp_stream_value { 906 sctp_assoc_t assoc_id; 907 uint16_t stream_id; 908 uint16_t stream_value; 909 }; 910 911 /* 912 * 7.2.2 Peer Address Information 913 * 914 * Applications can retrieve information about a specific peer address 915 * of an association, including its reachability state, congestion 916 * window, and retransmission timer values. This information is 917 * read-only. The following structure is used to access this 918 * information: 919 */ 920 struct sctp_paddrinfo { 921 sctp_assoc_t spinfo_assoc_id; 922 struct sockaddr_storage spinfo_address; 923 int32_t spinfo_state; 924 uint32_t spinfo_cwnd; 925 uint32_t spinfo_srtt; 926 uint32_t spinfo_rto; 927 uint32_t spinfo_mtu; 928 } __attribute__((packed, aligned(4))); 929 930 /* Peer addresses's state. */ 931 /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x] 932 * calls. 933 * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters. 934 * Not yet confirmed by a heartbeat and not available for data 935 * transfers. 936 * ACTIVE : Peer address confirmed, active and available for data transfers. 937 * INACTIVE: Peer address inactive and not available for data transfers. 938 */ 939 enum sctp_spinfo_state { 940 SCTP_INACTIVE, 941 SCTP_PF, 942 #define SCTP_POTENTIALLY_FAILED SCTP_PF 943 SCTP_ACTIVE, 944 SCTP_UNCONFIRMED, 945 SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */ 946 }; 947 948 /* 949 * 7.2.1 Association Status (SCTP_STATUS) 950 * 951 * Applications can retrieve current status information about an 952 * association, including association state, peer receiver window size, 953 * number of unacked data chunks, and number of data chunks pending 954 * receipt. This information is read-only. The following structure is 955 * used to access this information: 956 */ 957 struct sctp_status { 958 sctp_assoc_t sstat_assoc_id; 959 int32_t sstat_state; 960 uint32_t sstat_rwnd; 961 uint16_t sstat_unackdata; 962 uint16_t sstat_penddata; 963 uint16_t sstat_instrms; 964 uint16_t sstat_outstrms; 965 uint32_t sstat_fragmentation_point; 966 struct sctp_paddrinfo sstat_primary; 967 }; 968 969 /* 970 * 7.2.3. Get the list of chunks the peer requires to be authenticated 971 * (SCTP_PEER_AUTH_CHUNKS) 972 * 973 * This option gets a list of chunks for a specified association that 974 * the peer requires to be received authenticated only. 975 */ 976 struct sctp_authchunks { 977 sctp_assoc_t gauth_assoc_id; 978 uint32_t gauth_number_of_chunks; 979 uint8_t gauth_chunks[]; 980 }; 981 982 /* The broken spelling has been released already in lksctp-tools header, 983 * so don't break anyone, now that it's fixed. 984 */ 985 #define guth_number_of_chunks gauth_number_of_chunks 986 987 /* Association states. */ 988 enum sctp_sstat_state { 989 SCTP_EMPTY = 0, 990 SCTP_CLOSED = 1, 991 SCTP_COOKIE_WAIT = 2, 992 SCTP_COOKIE_ECHOED = 3, 993 SCTP_ESTABLISHED = 4, 994 SCTP_SHUTDOWN_PENDING = 5, 995 SCTP_SHUTDOWN_SENT = 6, 996 SCTP_SHUTDOWN_RECEIVED = 7, 997 SCTP_SHUTDOWN_ACK_SENT = 8, 998 }; 999 1000 /* 1001 * 8.2.6. Get the Current Identifiers of Associations 1002 * (SCTP_GET_ASSOC_ID_LIST) 1003 * 1004 * This option gets the current list of SCTP association identifiers of 1005 * the SCTP associations handled by a one-to-many style socket. 1006 */ 1007 struct sctp_assoc_ids { 1008 uint32_t gaids_number_of_ids; 1009 sctp_assoc_t gaids_assoc_id[]; 1010 }; 1011 1012 /* 1013 * 8.3, 8.5 get all peer/local addresses in an association. 1014 * This parameter struct is used by SCTP_GET_PEER_ADDRS and 1015 * SCTP_GET_LOCAL_ADDRS socket options used internally to implement 1016 * sctp_getpaddrs() and sctp_getladdrs() API. 1017 */ 1018 struct sctp_getaddrs_old { 1019 sctp_assoc_t assoc_id; 1020 int addr_num; 1021 #ifdef __KERNEL__ 1022 struct sockaddr *addrs; 1023 #else 1024 struct sockaddr *addrs; 1025 #endif 1026 }; 1027 1028 struct sctp_getaddrs { 1029 sctp_assoc_t assoc_id; /*input*/ 1030 uint32_t addr_num; /*output*/ 1031 uint8_t addrs[0]; /*output, variable size*/ 1032 }; 1033 1034 /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves 1035 * association stats. All stats are counts except sas_maxrto and 1036 * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since 1037 * the last call. Will return 0 when RTO was not update since last call 1038 */ 1039 struct sctp_assoc_stats { 1040 sctp_assoc_t sas_assoc_id; /* Input */ 1041 /* Transport of observed max RTO */ 1042 struct sockaddr_storage sas_obs_rto_ipaddr; 1043 uint64_t sas_maxrto; /* Maximum Observed RTO for period */ 1044 uint64_t sas_isacks; /* SACKs received */ 1045 uint64_t sas_osacks; /* SACKs sent */ 1046 uint64_t sas_opackets; /* Packets sent */ 1047 uint64_t sas_ipackets; /* Packets received */ 1048 uint64_t sas_rtxchunks; /* Retransmitted Chunks */ 1049 uint64_t sas_outofseqtsns;/* TSN received > next expected */ 1050 uint64_t sas_idupchunks; /* Dups received (ordered+unordered) */ 1051 uint64_t sas_gapcnt; /* Gap Acknowledgements Received */ 1052 uint64_t sas_ouodchunks; /* Unordered data chunks sent */ 1053 uint64_t sas_iuodchunks; /* Unordered data chunks received */ 1054 uint64_t sas_oodchunks; /* Ordered data chunks sent */ 1055 uint64_t sas_iodchunks; /* Ordered data chunks received */ 1056 uint64_t sas_octrlchunks; /* Control chunks sent */ 1057 uint64_t sas_ictrlchunks; /* Control chunks received */ 1058 }; 1059 1060 /* 1061 * 8.1 sctp_bindx() 1062 * 1063 * The flags parameter is formed from the bitwise OR of zero or more of the 1064 * following currently defined flags: 1065 */ 1066 #define SCTP_BINDX_ADD_ADDR 0x01 1067 #define SCTP_BINDX_REM_ADDR 0x02 1068 1069 /* This is the structure that is passed as an argument(optval) to 1070 * getsockopt(SCTP_SOCKOPT_PEELOFF). 1071 */ 1072 typedef struct { 1073 sctp_assoc_t associd; 1074 int sd; 1075 } sctp_peeloff_arg_t; 1076 1077 typedef struct { 1078 sctp_peeloff_arg_t p_arg; 1079 unsigned flags; 1080 } sctp_peeloff_flags_arg_t; 1081 1082 /* 1083 * Peer Address Thresholds socket option 1084 */ 1085 struct sctp_paddrthlds { 1086 sctp_assoc_t spt_assoc_id; 1087 struct sockaddr_storage spt_address; 1088 uint16_t spt_pathmaxrxt; 1089 uint16_t spt_pathpfthld; 1090 }; 1091 1092 /* Use a new structure with spt_pathcpthld for back compatibility */ 1093 struct sctp_paddrthlds_v2 { 1094 sctp_assoc_t spt_assoc_id; 1095 struct sockaddr_storage spt_address; 1096 uint16_t spt_pathmaxrxt; 1097 uint16_t spt_pathpfthld; 1098 uint16_t spt_pathcpthld; 1099 }; 1100 1101 /* 1102 * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status 1103 */ 1104 struct sctp_prstatus { 1105 sctp_assoc_t sprstat_assoc_id; 1106 uint16_t sprstat_sid; 1107 uint16_t sprstat_policy; 1108 uint64_t sprstat_abandoned_unsent; 1109 uint64_t sprstat_abandoned_sent; 1110 }; 1111 1112 struct sctp_default_prinfo { 1113 sctp_assoc_t pr_assoc_id; 1114 uint32_t pr_value; 1115 uint16_t pr_policy; 1116 }; 1117 1118 struct sctp_info { 1119 uint32_t sctpi_tag; 1120 uint32_t sctpi_state; 1121 uint32_t sctpi_rwnd; 1122 uint16_t sctpi_unackdata; 1123 uint16_t sctpi_penddata; 1124 uint16_t sctpi_instrms; 1125 uint16_t sctpi_outstrms; 1126 uint32_t sctpi_fragmentation_point; 1127 uint32_t sctpi_inqueue; 1128 uint32_t sctpi_outqueue; 1129 uint32_t sctpi_overall_error; 1130 uint32_t sctpi_max_burst; 1131 uint32_t sctpi_maxseg; 1132 uint32_t sctpi_peer_rwnd; 1133 uint32_t sctpi_peer_tag; 1134 uint8_t sctpi_peer_capable; 1135 uint8_t sctpi_peer_sack; 1136 uint16_t __reserved1; 1137 1138 /* assoc status info */ 1139 uint64_t sctpi_isacks; 1140 uint64_t sctpi_osacks; 1141 uint64_t sctpi_opackets; 1142 uint64_t sctpi_ipackets; 1143 uint64_t sctpi_rtxchunks; 1144 uint64_t sctpi_outofseqtsns; 1145 uint64_t sctpi_idupchunks; 1146 uint64_t sctpi_gapcnt; 1147 uint64_t sctpi_ouodchunks; 1148 uint64_t sctpi_iuodchunks; 1149 uint64_t sctpi_oodchunks; 1150 uint64_t sctpi_iodchunks; 1151 uint64_t sctpi_octrlchunks; 1152 uint64_t sctpi_ictrlchunks; 1153 1154 /* primary transport info */ 1155 struct sockaddr_storage sctpi_p_address; 1156 int32_t sctpi_p_state; 1157 uint32_t sctpi_p_cwnd; 1158 uint32_t sctpi_p_srtt; 1159 uint32_t sctpi_p_rto; 1160 uint32_t sctpi_p_hbinterval; 1161 uint32_t sctpi_p_pathmaxrxt; 1162 uint32_t sctpi_p_sackdelay; 1163 uint32_t sctpi_p_sackfreq; 1164 uint32_t sctpi_p_ssthresh; 1165 uint32_t sctpi_p_partial_bytes_acked; 1166 uint32_t sctpi_p_flight_size; 1167 uint16_t sctpi_p_error; 1168 uint16_t __reserved2; 1169 1170 /* sctp sock info */ 1171 uint32_t sctpi_s_autoclose; 1172 uint32_t sctpi_s_adaptation_ind; 1173 uint32_t sctpi_s_pd_point; 1174 uint8_t sctpi_s_nodelay; 1175 uint8_t sctpi_s_disable_fragments; 1176 uint8_t sctpi_s_v4mapped; 1177 uint8_t sctpi_s_frag_interleave; 1178 uint32_t sctpi_s_type; 1179 uint32_t __reserved3; 1180 }; 1181 1182 struct sctp_reset_streams { 1183 sctp_assoc_t srs_assoc_id; 1184 uint16_t srs_flags; 1185 uint16_t srs_number_streams; /* 0 == ALL */ 1186 uint16_t srs_stream_list[]; /* list if srs_num_streams is not 0 */ 1187 }; 1188 1189 struct sctp_add_streams { 1190 sctp_assoc_t sas_assoc_id; 1191 uint16_t sas_instrms; 1192 uint16_t sas_outstrms; 1193 }; 1194 1195 struct sctp_event { 1196 sctp_assoc_t se_assoc_id; 1197 uint16_t se_type; 1198 uint8_t se_on; 1199 }; 1200 1201 struct sctp_udpencaps { 1202 sctp_assoc_t sue_assoc_id; 1203 struct sockaddr_storage sue_address; 1204 uint16_t sue_port; 1205 }; 1206 1207 /* SCTP Stream schedulers */ 1208 enum sctp_sched_type { 1209 SCTP_SS_FCFS, 1210 SCTP_SS_DEFAULT = SCTP_SS_FCFS, 1211 SCTP_SS_PRIO, 1212 SCTP_SS_RR, 1213 SCTP_SS_MAX = SCTP_SS_RR 1214 }; 1215 1216 #endif /* _UAPI_SCTP_H */ 1217