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 __s32 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 36 108 109 /* Internal Socket Options. Some of the sctp library functions are 110 * implemented using these socket options. 111 */ 112 #define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */ 113 #define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */ 114 #define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */ 115 /* Options 104-106 are deprecated and removed. Do not use this space */ 116 #define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */ 117 #define SCTP_GET_PEER_ADDRS 108 /* Get all peer address. */ 118 #define SCTP_GET_LOCAL_ADDRS 109 /* Get all local address. */ 119 #define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */ 120 #define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */ 121 #define SCTP_GET_ASSOC_STATS 112 /* Read only */ 122 #define SCTP_PR_SUPPORTED 113 123 #define SCTP_DEFAULT_PRINFO 114 124 #define SCTP_PR_ASSOC_STATUS 115 125 #define SCTP_PR_STREAM_STATUS 116 126 #define SCTP_RECONFIG_SUPPORTED 117 127 #define SCTP_ENABLE_STREAM_RESET 118 128 #define SCTP_RESET_STREAMS 119 129 #define SCTP_RESET_ASSOC 120 130 #define SCTP_ADD_STREAMS 121 131 #define SCTP_SOCKOPT_PEELOFF_FLAGS 122 132 #define SCTP_STREAM_SCHEDULER 123 133 #define SCTP_STREAM_SCHEDULER_VALUE 124 134 #define SCTP_INTERLEAVING_SUPPORTED 125 135 #define SCTP_SENDMSG_CONNECT 126 136 #define SCTP_EVENT 127 137 138 /* PR-SCTP policies */ 139 #define SCTP_PR_SCTP_NONE 0x0000 140 #define SCTP_PR_SCTP_TTL 0x0010 141 #define SCTP_PR_SCTP_RTX 0x0020 142 #define SCTP_PR_SCTP_PRIO 0x0030 143 #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_PRIO 144 #define SCTP_PR_SCTP_MASK 0x0030 145 146 #define __SCTP_PR_INDEX(x) ((x >> 4) - 1) 147 #define SCTP_PR_INDEX(x) __SCTP_PR_INDEX(SCTP_PR_SCTP_ ## x) 148 149 #define SCTP_PR_POLICY(x) ((x) & SCTP_PR_SCTP_MASK) 150 #define SCTP_PR_SET_POLICY(flags, x) \ 151 do { \ 152 flags &= ~SCTP_PR_SCTP_MASK; \ 153 flags |= x; \ 154 } while (0) 155 156 #define SCTP_PR_TTL_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_TTL) 157 #define SCTP_PR_RTX_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_RTX) 158 #define SCTP_PR_PRIO_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_PRIO) 159 160 /* For enable stream reset */ 161 #define SCTP_ENABLE_RESET_STREAM_REQ 0x01 162 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x02 163 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x04 164 #define SCTP_ENABLE_STRRESET_MASK 0x07 165 166 #define SCTP_STREAM_RESET_INCOMING 0x01 167 #define SCTP_STREAM_RESET_OUTGOING 0x02 168 169 /* These are bit fields for msghdr->msg_flags. See section 5.1. */ 170 /* On user space Linux, these live in <bits/socket.h> as an enum. */ 171 enum sctp_msg_flags { 172 MSG_NOTIFICATION = 0x8000, 173 #define MSG_NOTIFICATION MSG_NOTIFICATION 174 }; 175 176 /* 5.3.1 SCTP Initiation Structure (SCTP_INIT) 177 * 178 * This cmsghdr structure provides information for initializing new 179 * SCTP associations with sendmsg(). The SCTP_INITMSG socket option 180 * uses this same data structure. This structure is not used for 181 * recvmsg(). 182 * 183 * cmsg_level cmsg_type cmsg_data[] 184 * ------------ ------------ ---------------------- 185 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg 186 */ 187 struct sctp_initmsg { 188 __u16 sinit_num_ostreams; 189 __u16 sinit_max_instreams; 190 __u16 sinit_max_attempts; 191 __u16 sinit_max_init_timeo; 192 }; 193 194 /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV) 195 * 196 * This cmsghdr structure specifies SCTP options for sendmsg() and 197 * describes SCTP header information about a received message through 198 * recvmsg(). 199 * 200 * cmsg_level cmsg_type cmsg_data[] 201 * ------------ ------------ ---------------------- 202 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo 203 */ 204 struct sctp_sndrcvinfo { 205 __u16 sinfo_stream; 206 __u16 sinfo_ssn; 207 __u16 sinfo_flags; 208 __u32 sinfo_ppid; 209 __u32 sinfo_context; 210 __u32 sinfo_timetolive; 211 __u32 sinfo_tsn; 212 __u32 sinfo_cumtsn; 213 sctp_assoc_t sinfo_assoc_id; 214 }; 215 216 /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO) 217 * 218 * This cmsghdr structure specifies SCTP options for sendmsg(). 219 * 220 * cmsg_level cmsg_type cmsg_data[] 221 * ------------ ------------ ------------------- 222 * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo 223 */ 224 struct sctp_sndinfo { 225 __u16 snd_sid; 226 __u16 snd_flags; 227 __u32 snd_ppid; 228 __u32 snd_context; 229 sctp_assoc_t snd_assoc_id; 230 }; 231 232 /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO) 233 * 234 * This cmsghdr structure describes SCTP receive information 235 * about a received message through recvmsg(). 236 * 237 * cmsg_level cmsg_type cmsg_data[] 238 * ------------ ------------ ------------------- 239 * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo 240 */ 241 struct sctp_rcvinfo { 242 __u16 rcv_sid; 243 __u16 rcv_ssn; 244 __u16 rcv_flags; 245 __u32 rcv_ppid; 246 __u32 rcv_tsn; 247 __u32 rcv_cumtsn; 248 __u32 rcv_context; 249 sctp_assoc_t rcv_assoc_id; 250 }; 251 252 /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO) 253 * 254 * This cmsghdr structure describes SCTP receive information 255 * of the next message that will be delivered through recvmsg() 256 * if this information is already available when delivering 257 * the current message. 258 * 259 * cmsg_level cmsg_type cmsg_data[] 260 * ------------ ------------ ------------------- 261 * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo 262 */ 263 struct sctp_nxtinfo { 264 __u16 nxt_sid; 265 __u16 nxt_flags; 266 __u32 nxt_ppid; 267 __u32 nxt_length; 268 sctp_assoc_t nxt_assoc_id; 269 }; 270 271 /* 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO) 272 * 273 * This cmsghdr structure specifies SCTP options for sendmsg(). 274 * 275 * cmsg_level cmsg_type cmsg_data[] 276 * ------------ ------------ ------------------- 277 * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo 278 */ 279 struct sctp_prinfo { 280 __u16 pr_policy; 281 __u32 pr_value; 282 }; 283 284 /* 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO) 285 * 286 * This cmsghdr structure specifies SCTP options for sendmsg(). 287 * 288 * cmsg_level cmsg_type cmsg_data[] 289 * ------------ ------------ ------------------- 290 * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo 291 */ 292 struct sctp_authinfo { 293 __u16 auth_keynumber; 294 }; 295 296 /* 297 * sinfo_flags: 16 bits (unsigned integer) 298 * 299 * This field may contain any of the following flags and is composed of 300 * a bitwise OR of these values. 301 */ 302 enum sctp_sinfo_flags { 303 SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */ 304 SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */ 305 SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */ 306 SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */ 307 /* 2 bits here have been used by SCTP_PR_SCTP_MASK */ 308 SCTP_SENDALL = (1 << 6), 309 SCTP_PR_SCTP_ALL = (1 << 7), 310 SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */ 311 SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */ 312 }; 313 314 typedef union { 315 __u8 raw; 316 struct sctp_initmsg init; 317 struct sctp_sndrcvinfo sndrcv; 318 } sctp_cmsg_data_t; 319 320 /* These are cmsg_types. */ 321 typedef enum sctp_cmsg_type { 322 SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ 323 #define SCTP_INIT SCTP_INIT 324 SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ 325 #define SCTP_SNDRCV SCTP_SNDRCV 326 SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */ 327 #define SCTP_SNDINFO SCTP_SNDINFO 328 SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */ 329 #define SCTP_RCVINFO SCTP_RCVINFO 330 SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */ 331 #define SCTP_NXTINFO SCTP_NXTINFO 332 SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */ 333 #define SCTP_PRINFO SCTP_PRINFO 334 SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure */ 335 #define SCTP_AUTHINFO SCTP_AUTHINFO 336 SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */ 337 #define SCTP_DSTADDRV4 SCTP_DSTADDRV4 338 SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */ 339 #define SCTP_DSTADDRV6 SCTP_DSTADDRV6 340 } sctp_cmsg_t; 341 342 /* 343 * 5.3.1.1 SCTP_ASSOC_CHANGE 344 * 345 * Communication notifications inform the ULP that an SCTP association 346 * has either begun or ended. The identifier for a new association is 347 * provided by this notificaion. The notification information has the 348 * following format: 349 * 350 */ 351 struct sctp_assoc_change { 352 __u16 sac_type; 353 __u16 sac_flags; 354 __u32 sac_length; 355 __u16 sac_state; 356 __u16 sac_error; 357 __u16 sac_outbound_streams; 358 __u16 sac_inbound_streams; 359 sctp_assoc_t sac_assoc_id; 360 __u8 sac_info[0]; 361 }; 362 363 /* 364 * sac_state: 32 bits (signed integer) 365 * 366 * This field holds one of a number of values that communicate the 367 * event that happened to the association. They include: 368 * 369 * Note: The following state names deviate from the API draft as 370 * the names clash too easily with other kernel symbols. 371 */ 372 enum sctp_sac_state { 373 SCTP_COMM_UP, 374 SCTP_COMM_LOST, 375 SCTP_RESTART, 376 SCTP_SHUTDOWN_COMP, 377 SCTP_CANT_STR_ASSOC, 378 }; 379 380 /* 381 * 5.3.1.2 SCTP_PEER_ADDR_CHANGE 382 * 383 * When a destination address on a multi-homed peer encounters a change 384 * an interface details event is sent. The information has the 385 * following structure: 386 */ 387 struct sctp_paddr_change { 388 __u16 spc_type; 389 __u16 spc_flags; 390 __u32 spc_length; 391 struct sockaddr_storage spc_aaddr; 392 int spc_state; 393 int spc_error; 394 sctp_assoc_t spc_assoc_id; 395 } __attribute__((packed, aligned(4))); 396 397 /* 398 * spc_state: 32 bits (signed integer) 399 * 400 * This field holds one of a number of values that communicate the 401 * event that happened to the address. They include: 402 */ 403 enum sctp_spc_state { 404 SCTP_ADDR_AVAILABLE, 405 SCTP_ADDR_UNREACHABLE, 406 SCTP_ADDR_REMOVED, 407 SCTP_ADDR_ADDED, 408 SCTP_ADDR_MADE_PRIM, 409 SCTP_ADDR_CONFIRMED, 410 }; 411 412 413 /* 414 * 5.3.1.3 SCTP_REMOTE_ERROR 415 * 416 * A remote peer may send an Operational Error message to its peer. 417 * This message indicates a variety of error conditions on an 418 * association. The entire error TLV as it appears on the wire is 419 * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP 420 * specification [SCTP] and any extensions for a list of possible 421 * error formats. SCTP error TLVs have the format: 422 */ 423 struct sctp_remote_error { 424 __u16 sre_type; 425 __u16 sre_flags; 426 __u32 sre_length; 427 __be16 sre_error; 428 sctp_assoc_t sre_assoc_id; 429 __u8 sre_data[0]; 430 }; 431 432 433 /* 434 * 5.3.1.4 SCTP_SEND_FAILED 435 * 436 * If SCTP cannot deliver a message it may return the message as a 437 * notification. 438 */ 439 struct sctp_send_failed { 440 __u16 ssf_type; 441 __u16 ssf_flags; 442 __u32 ssf_length; 443 __u32 ssf_error; 444 struct sctp_sndrcvinfo ssf_info; 445 sctp_assoc_t ssf_assoc_id; 446 __u8 ssf_data[0]; 447 }; 448 449 /* 450 * ssf_flags: 16 bits (unsigned integer) 451 * 452 * The flag value will take one of the following values 453 * 454 * SCTP_DATA_UNSENT - Indicates that the data was never put on 455 * the wire. 456 * 457 * SCTP_DATA_SENT - Indicates that the data was put on the wire. 458 * Note that this does not necessarily mean that the 459 * data was (or was not) successfully delivered. 460 */ 461 enum sctp_ssf_flags { 462 SCTP_DATA_UNSENT, 463 SCTP_DATA_SENT, 464 }; 465 466 /* 467 * 5.3.1.5 SCTP_SHUTDOWN_EVENT 468 * 469 * When a peer sends a SHUTDOWN, SCTP delivers this notification to 470 * inform the application that it should cease sending data. 471 */ 472 struct sctp_shutdown_event { 473 __u16 sse_type; 474 __u16 sse_flags; 475 __u32 sse_length; 476 sctp_assoc_t sse_assoc_id; 477 }; 478 479 /* 480 * 5.3.1.6 SCTP_ADAPTATION_INDICATION 481 * 482 * When a peer sends a Adaptation Layer Indication parameter , SCTP 483 * delivers this notification to inform the application 484 * that of the peers requested adaptation layer. 485 */ 486 struct sctp_adaptation_event { 487 __u16 sai_type; 488 __u16 sai_flags; 489 __u32 sai_length; 490 __u32 sai_adaptation_ind; 491 sctp_assoc_t sai_assoc_id; 492 }; 493 494 /* 495 * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT 496 * 497 * When a receiver is engaged in a partial delivery of a 498 * message this notification will be used to indicate 499 * various events. 500 */ 501 struct sctp_pdapi_event { 502 __u16 pdapi_type; 503 __u16 pdapi_flags; 504 __u32 pdapi_length; 505 __u32 pdapi_indication; 506 sctp_assoc_t pdapi_assoc_id; 507 __u32 pdapi_stream; 508 __u32 pdapi_seq; 509 }; 510 511 enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; 512 513 /* 514 * 5.3.1.8. SCTP_AUTHENTICATION_EVENT 515 * 516 * When a receiver is using authentication this message will provide 517 * notifications regarding new keys being made active as well as errors. 518 */ 519 struct sctp_authkey_event { 520 __u16 auth_type; 521 __u16 auth_flags; 522 __u32 auth_length; 523 __u16 auth_keynumber; 524 __u16 auth_altkeynumber; 525 __u32 auth_indication; 526 sctp_assoc_t auth_assoc_id; 527 }; 528 529 enum { 530 SCTP_AUTH_NEW_KEY, 531 #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY /* compatible with before */ 532 SCTP_AUTH_FREE_KEY, 533 SCTP_AUTH_NO_AUTH, 534 }; 535 536 /* 537 * 6.1.9. SCTP_SENDER_DRY_EVENT 538 * 539 * When the SCTP stack has no more user data to send or retransmit, this 540 * notification is given to the user. Also, at the time when a user app 541 * subscribes to this event, if there is no data to be sent or 542 * retransmit, the stack will immediately send up this notification. 543 */ 544 struct sctp_sender_dry_event { 545 __u16 sender_dry_type; 546 __u16 sender_dry_flags; 547 __u32 sender_dry_length; 548 sctp_assoc_t sender_dry_assoc_id; 549 }; 550 551 #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 552 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 553 #define SCTP_STREAM_RESET_DENIED 0x0004 554 #define SCTP_STREAM_RESET_FAILED 0x0008 555 struct sctp_stream_reset_event { 556 __u16 strreset_type; 557 __u16 strreset_flags; 558 __u32 strreset_length; 559 sctp_assoc_t strreset_assoc_id; 560 __u16 strreset_stream_list[]; 561 }; 562 563 #define SCTP_ASSOC_RESET_DENIED 0x0004 564 #define SCTP_ASSOC_RESET_FAILED 0x0008 565 struct sctp_assoc_reset_event { 566 __u16 assocreset_type; 567 __u16 assocreset_flags; 568 __u32 assocreset_length; 569 sctp_assoc_t assocreset_assoc_id; 570 __u32 assocreset_local_tsn; 571 __u32 assocreset_remote_tsn; 572 }; 573 574 #define SCTP_ASSOC_CHANGE_DENIED 0x0004 575 #define SCTP_ASSOC_CHANGE_FAILED 0x0008 576 #define SCTP_STREAM_CHANGE_DENIED SCTP_ASSOC_CHANGE_DENIED 577 #define SCTP_STREAM_CHANGE_FAILED SCTP_ASSOC_CHANGE_FAILED 578 struct sctp_stream_change_event { 579 __u16 strchange_type; 580 __u16 strchange_flags; 581 __u32 strchange_length; 582 sctp_assoc_t strchange_assoc_id; 583 __u16 strchange_instrms; 584 __u16 strchange_outstrms; 585 }; 586 587 /* 588 * Described in Section 7.3 589 * Ancillary Data and Notification Interest Options 590 */ 591 struct sctp_event_subscribe { 592 __u8 sctp_data_io_event; 593 __u8 sctp_association_event; 594 __u8 sctp_address_event; 595 __u8 sctp_send_failure_event; 596 __u8 sctp_peer_error_event; 597 __u8 sctp_shutdown_event; 598 __u8 sctp_partial_delivery_event; 599 __u8 sctp_adaptation_layer_event; 600 __u8 sctp_authentication_event; 601 __u8 sctp_sender_dry_event; 602 __u8 sctp_stream_reset_event; 603 __u8 sctp_assoc_reset_event; 604 __u8 sctp_stream_change_event; 605 }; 606 607 /* 608 * 5.3.1 SCTP Notification Structure 609 * 610 * The notification structure is defined as the union of all 611 * notification types. 612 * 613 */ 614 union sctp_notification { 615 struct { 616 __u16 sn_type; /* Notification type. */ 617 __u16 sn_flags; 618 __u32 sn_length; 619 } sn_header; 620 struct sctp_assoc_change sn_assoc_change; 621 struct sctp_paddr_change sn_paddr_change; 622 struct sctp_remote_error sn_remote_error; 623 struct sctp_send_failed sn_send_failed; 624 struct sctp_shutdown_event sn_shutdown_event; 625 struct sctp_adaptation_event sn_adaptation_event; 626 struct sctp_pdapi_event sn_pdapi_event; 627 struct sctp_authkey_event sn_authkey_event; 628 struct sctp_sender_dry_event sn_sender_dry_event; 629 struct sctp_stream_reset_event sn_strreset_event; 630 struct sctp_assoc_reset_event sn_assocreset_event; 631 struct sctp_stream_change_event sn_strchange_event; 632 }; 633 634 /* Section 5.3.1 635 * All standard values for sn_type flags are greater than 2^15. 636 * Values from 2^15 and down are reserved. 637 */ 638 639 enum sctp_sn_type { 640 SCTP_SN_TYPE_BASE = (1<<15), 641 SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE, 642 #define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT 643 SCTP_ASSOC_CHANGE, 644 #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE 645 SCTP_PEER_ADDR_CHANGE, 646 #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE 647 SCTP_SEND_FAILED, 648 #define SCTP_SEND_FAILED SCTP_SEND_FAILED 649 SCTP_REMOTE_ERROR, 650 #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR 651 SCTP_SHUTDOWN_EVENT, 652 #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT 653 SCTP_PARTIAL_DELIVERY_EVENT, 654 #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT 655 SCTP_ADAPTATION_INDICATION, 656 #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION 657 SCTP_AUTHENTICATION_EVENT, 658 #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT 659 SCTP_SENDER_DRY_EVENT, 660 #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT 661 SCTP_STREAM_RESET_EVENT, 662 #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT 663 SCTP_ASSOC_RESET_EVENT, 664 #define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT 665 SCTP_STREAM_CHANGE_EVENT, 666 #define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT 667 SCTP_SN_TYPE_MAX = SCTP_STREAM_CHANGE_EVENT, 668 #define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX 669 }; 670 671 /* Notification error codes used to fill up the error fields in some 672 * notifications. 673 * SCTP_PEER_ADDRESS_CHAGE : spc_error 674 * SCTP_ASSOC_CHANGE : sac_error 675 * These names should be potentially included in the draft 04 of the SCTP 676 * sockets API specification. 677 */ 678 typedef enum sctp_sn_error { 679 SCTP_FAILED_THRESHOLD, 680 SCTP_RECEIVED_SACK, 681 SCTP_HEARTBEAT_SUCCESS, 682 SCTP_RESPONSE_TO_USER_REQ, 683 SCTP_INTERNAL_ERROR, 684 SCTP_SHUTDOWN_GUARD_EXPIRES, 685 SCTP_PEER_FAULTY, 686 } sctp_sn_error_t; 687 688 /* 689 * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) 690 * 691 * The protocol parameters used to initialize and bound retransmission 692 * timeout (RTO) are tunable. See [SCTP] for more information on how 693 * these parameters are used in RTO calculation. 694 */ 695 struct sctp_rtoinfo { 696 sctp_assoc_t srto_assoc_id; 697 __u32 srto_initial; 698 __u32 srto_max; 699 __u32 srto_min; 700 }; 701 702 /* 703 * 7.1.2 Association Parameters (SCTP_ASSOCINFO) 704 * 705 * This option is used to both examine and set various association and 706 * endpoint parameters. 707 */ 708 struct sctp_assocparams { 709 sctp_assoc_t sasoc_assoc_id; 710 __u16 sasoc_asocmaxrxt; 711 __u16 sasoc_number_peer_destinations; 712 __u32 sasoc_peer_rwnd; 713 __u32 sasoc_local_rwnd; 714 __u32 sasoc_cookie_life; 715 }; 716 717 /* 718 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) 719 * 720 * Requests that the peer mark the enclosed address as the association 721 * primary. The enclosed address must be one of the association's 722 * locally bound addresses. The following structure is used to make a 723 * set primary request: 724 */ 725 struct sctp_setpeerprim { 726 sctp_assoc_t sspp_assoc_id; 727 struct sockaddr_storage sspp_addr; 728 } __attribute__((packed, aligned(4))); 729 730 /* 731 * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) 732 * 733 * Requests that the local SCTP stack use the enclosed peer address as 734 * the association primary. The enclosed address must be one of the 735 * association peer's addresses. The following structure is used to 736 * make a set peer primary request: 737 */ 738 struct sctp_prim { 739 sctp_assoc_t ssp_assoc_id; 740 struct sockaddr_storage ssp_addr; 741 } __attribute__((packed, aligned(4))); 742 743 /* For backward compatibility use, define the old name too */ 744 #define sctp_setprim sctp_prim 745 746 /* 747 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER) 748 * 749 * Requests that the local endpoint set the specified Adaptation Layer 750 * Indication parameter for all future INIT and INIT-ACK exchanges. 751 */ 752 struct sctp_setadaptation { 753 __u32 ssb_adaptation_ind; 754 }; 755 756 /* 757 * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) 758 * 759 * Applications can enable or disable heartbeats for any peer address 760 * of an association, modify an address's heartbeat interval, force a 761 * heartbeat to be sent immediately, and adjust the address's maximum 762 * number of retransmissions sent before an address is considered 763 * unreachable. The following structure is used to access and modify an 764 * address's parameters: 765 */ 766 enum sctp_spp_flags { 767 SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/ 768 SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/ 769 SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE, 770 SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/ 771 SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/ 772 SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ 773 SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE, 774 SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/ 775 SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/ 776 SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE, 777 SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */ 778 SPP_IPV6_FLOWLABEL = 1<<8, 779 SPP_DSCP = 1<<9, 780 }; 781 782 struct sctp_paddrparams { 783 sctp_assoc_t spp_assoc_id; 784 struct sockaddr_storage spp_address; 785 __u32 spp_hbinterval; 786 __u16 spp_pathmaxrxt; 787 __u32 spp_pathmtu; 788 __u32 spp_sackdelay; 789 __u32 spp_flags; 790 __u32 spp_ipv6_flowlabel; 791 __u8 spp_dscp; 792 } __attribute__((packed, aligned(4))); 793 794 /* 795 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK) 796 * 797 * This set option adds a chunk type that the user is requesting to be 798 * received only in an authenticated way. Changes to the list of chunks 799 * will only effect future associations on the socket. 800 */ 801 struct sctp_authchunk { 802 __u8 sauth_chunk; 803 }; 804 805 /* 806 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT) 807 * 808 * This option gets or sets the list of HMAC algorithms that the local 809 * endpoint requires the peer to use. 810 */ 811 #ifndef __KERNEL__ 812 /* This here is only used by user space as is. It might not be a good idea 813 * to export/reveal the whole structure with reserved fields etc. 814 */ 815 enum { 816 SCTP_AUTH_HMAC_ID_SHA1 = 1, 817 SCTP_AUTH_HMAC_ID_SHA256 = 3, 818 }; 819 #endif 820 821 struct sctp_hmacalgo { 822 __u32 shmac_num_idents; 823 __u16 shmac_idents[]; 824 }; 825 826 /* Sadly, user and kernel space have different names for 827 * this structure member, so this is to not break anything. 828 */ 829 #define shmac_number_of_idents shmac_num_idents 830 831 /* 832 * 7.1.20. Set a shared key (SCTP_AUTH_KEY) 833 * 834 * This option will set a shared secret key which is used to build an 835 * association shared key. 836 */ 837 struct sctp_authkey { 838 sctp_assoc_t sca_assoc_id; 839 __u16 sca_keynumber; 840 __u16 sca_keylength; 841 __u8 sca_key[]; 842 }; 843 844 /* 845 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY) 846 * 847 * This option will get or set the active shared key to be used to build 848 * the association shared key. 849 */ 850 851 struct sctp_authkeyid { 852 sctp_assoc_t scact_assoc_id; 853 __u16 scact_keynumber; 854 }; 855 856 857 /* 858 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK) 859 * 860 * This option will effect the way delayed acks are performed. This 861 * option allows you to get or set the delayed ack time, in 862 * milliseconds. It also allows changing the delayed ack frequency. 863 * Changing the frequency to 1 disables the delayed sack algorithm. If 864 * the assoc_id is 0, then this sets or gets the endpoints default 865 * values. If the assoc_id field is non-zero, then the set or get 866 * effects the specified association for the one to many model (the 867 * assoc_id field is ignored by the one to one model). Note that if 868 * sack_delay or sack_freq are 0 when setting this option, then the 869 * current values will remain unchanged. 870 */ 871 struct sctp_sack_info { 872 sctp_assoc_t sack_assoc_id; 873 uint32_t sack_delay; 874 uint32_t sack_freq; 875 }; 876 877 struct sctp_assoc_value { 878 sctp_assoc_t assoc_id; 879 uint32_t assoc_value; 880 }; 881 882 struct sctp_stream_value { 883 sctp_assoc_t assoc_id; 884 uint16_t stream_id; 885 uint16_t stream_value; 886 }; 887 888 /* 889 * 7.2.2 Peer Address Information 890 * 891 * Applications can retrieve information about a specific peer address 892 * of an association, including its reachability state, congestion 893 * window, and retransmission timer values. This information is 894 * read-only. The following structure is used to access this 895 * information: 896 */ 897 struct sctp_paddrinfo { 898 sctp_assoc_t spinfo_assoc_id; 899 struct sockaddr_storage spinfo_address; 900 __s32 spinfo_state; 901 __u32 spinfo_cwnd; 902 __u32 spinfo_srtt; 903 __u32 spinfo_rto; 904 __u32 spinfo_mtu; 905 } __attribute__((packed, aligned(4))); 906 907 /* Peer addresses's state. */ 908 /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x] 909 * calls. 910 * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters. 911 * Not yet confirmed by a heartbeat and not available for data 912 * transfers. 913 * ACTIVE : Peer address confirmed, active and available for data transfers. 914 * INACTIVE: Peer address inactive and not available for data transfers. 915 */ 916 enum sctp_spinfo_state { 917 SCTP_INACTIVE, 918 SCTP_PF, 919 SCTP_ACTIVE, 920 SCTP_UNCONFIRMED, 921 SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */ 922 }; 923 924 /* 925 * 7.2.1 Association Status (SCTP_STATUS) 926 * 927 * Applications can retrieve current status information about an 928 * association, including association state, peer receiver window size, 929 * number of unacked data chunks, and number of data chunks pending 930 * receipt. This information is read-only. The following structure is 931 * used to access this information: 932 */ 933 struct sctp_status { 934 sctp_assoc_t sstat_assoc_id; 935 __s32 sstat_state; 936 __u32 sstat_rwnd; 937 __u16 sstat_unackdata; 938 __u16 sstat_penddata; 939 __u16 sstat_instrms; 940 __u16 sstat_outstrms; 941 __u32 sstat_fragmentation_point; 942 struct sctp_paddrinfo sstat_primary; 943 }; 944 945 /* 946 * 7.2.3. Get the list of chunks the peer requires to be authenticated 947 * (SCTP_PEER_AUTH_CHUNKS) 948 * 949 * This option gets a list of chunks for a specified association that 950 * the peer requires to be received authenticated only. 951 */ 952 struct sctp_authchunks { 953 sctp_assoc_t gauth_assoc_id; 954 __u32 gauth_number_of_chunks; 955 uint8_t gauth_chunks[]; 956 }; 957 958 /* The broken spelling has been released already in lksctp-tools header, 959 * so don't break anyone, now that it's fixed. 960 */ 961 #define guth_number_of_chunks gauth_number_of_chunks 962 963 /* Association states. */ 964 enum sctp_sstat_state { 965 SCTP_EMPTY = 0, 966 SCTP_CLOSED = 1, 967 SCTP_COOKIE_WAIT = 2, 968 SCTP_COOKIE_ECHOED = 3, 969 SCTP_ESTABLISHED = 4, 970 SCTP_SHUTDOWN_PENDING = 5, 971 SCTP_SHUTDOWN_SENT = 6, 972 SCTP_SHUTDOWN_RECEIVED = 7, 973 SCTP_SHUTDOWN_ACK_SENT = 8, 974 }; 975 976 /* 977 * 8.2.6. Get the Current Identifiers of Associations 978 * (SCTP_GET_ASSOC_ID_LIST) 979 * 980 * This option gets the current list of SCTP association identifiers of 981 * the SCTP associations handled by a one-to-many style socket. 982 */ 983 struct sctp_assoc_ids { 984 __u32 gaids_number_of_ids; 985 sctp_assoc_t gaids_assoc_id[]; 986 }; 987 988 /* 989 * 8.3, 8.5 get all peer/local addresses in an association. 990 * This parameter struct is used by SCTP_GET_PEER_ADDRS and 991 * SCTP_GET_LOCAL_ADDRS socket options used internally to implement 992 * sctp_getpaddrs() and sctp_getladdrs() API. 993 */ 994 struct sctp_getaddrs_old { 995 sctp_assoc_t assoc_id; 996 int addr_num; 997 #ifdef __KERNEL__ 998 struct sockaddr __user *addrs; 999 #else 1000 struct sockaddr *addrs; 1001 #endif 1002 }; 1003 1004 struct sctp_getaddrs { 1005 sctp_assoc_t assoc_id; /*input*/ 1006 __u32 addr_num; /*output*/ 1007 __u8 addrs[0]; /*output, variable size*/ 1008 }; 1009 1010 /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves 1011 * association stats. All stats are counts except sas_maxrto and 1012 * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since 1013 * the last call. Will return 0 when RTO was not update since last call 1014 */ 1015 struct sctp_assoc_stats { 1016 sctp_assoc_t sas_assoc_id; /* Input */ 1017 /* Transport of observed max RTO */ 1018 struct sockaddr_storage sas_obs_rto_ipaddr; 1019 __u64 sas_maxrto; /* Maximum Observed RTO for period */ 1020 __u64 sas_isacks; /* SACKs received */ 1021 __u64 sas_osacks; /* SACKs sent */ 1022 __u64 sas_opackets; /* Packets sent */ 1023 __u64 sas_ipackets; /* Packets received */ 1024 __u64 sas_rtxchunks; /* Retransmitted Chunks */ 1025 __u64 sas_outofseqtsns;/* TSN received > next expected */ 1026 __u64 sas_idupchunks; /* Dups received (ordered+unordered) */ 1027 __u64 sas_gapcnt; /* Gap Acknowledgements Received */ 1028 __u64 sas_ouodchunks; /* Unordered data chunks sent */ 1029 __u64 sas_iuodchunks; /* Unordered data chunks received */ 1030 __u64 sas_oodchunks; /* Ordered data chunks sent */ 1031 __u64 sas_iodchunks; /* Ordered data chunks received */ 1032 __u64 sas_octrlchunks; /* Control chunks sent */ 1033 __u64 sas_ictrlchunks; /* Control chunks received */ 1034 }; 1035 1036 /* 1037 * 8.1 sctp_bindx() 1038 * 1039 * The flags parameter is formed from the bitwise OR of zero or more of the 1040 * following currently defined flags: 1041 */ 1042 #define SCTP_BINDX_ADD_ADDR 0x01 1043 #define SCTP_BINDX_REM_ADDR 0x02 1044 1045 /* This is the structure that is passed as an argument(optval) to 1046 * getsockopt(SCTP_SOCKOPT_PEELOFF). 1047 */ 1048 typedef struct { 1049 sctp_assoc_t associd; 1050 int sd; 1051 } sctp_peeloff_arg_t; 1052 1053 typedef struct { 1054 sctp_peeloff_arg_t p_arg; 1055 unsigned flags; 1056 } sctp_peeloff_flags_arg_t; 1057 1058 /* 1059 * Peer Address Thresholds socket option 1060 */ 1061 struct sctp_paddrthlds { 1062 sctp_assoc_t spt_assoc_id; 1063 struct sockaddr_storage spt_address; 1064 __u16 spt_pathmaxrxt; 1065 __u16 spt_pathpfthld; 1066 }; 1067 1068 /* 1069 * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status 1070 */ 1071 struct sctp_prstatus { 1072 sctp_assoc_t sprstat_assoc_id; 1073 __u16 sprstat_sid; 1074 __u16 sprstat_policy; 1075 __u64 sprstat_abandoned_unsent; 1076 __u64 sprstat_abandoned_sent; 1077 }; 1078 1079 struct sctp_default_prinfo { 1080 sctp_assoc_t pr_assoc_id; 1081 __u32 pr_value; 1082 __u16 pr_policy; 1083 }; 1084 1085 struct sctp_info { 1086 __u32 sctpi_tag; 1087 __u32 sctpi_state; 1088 __u32 sctpi_rwnd; 1089 __u16 sctpi_unackdata; 1090 __u16 sctpi_penddata; 1091 __u16 sctpi_instrms; 1092 __u16 sctpi_outstrms; 1093 __u32 sctpi_fragmentation_point; 1094 __u32 sctpi_inqueue; 1095 __u32 sctpi_outqueue; 1096 __u32 sctpi_overall_error; 1097 __u32 sctpi_max_burst; 1098 __u32 sctpi_maxseg; 1099 __u32 sctpi_peer_rwnd; 1100 __u32 sctpi_peer_tag; 1101 __u8 sctpi_peer_capable; 1102 __u8 sctpi_peer_sack; 1103 __u16 __reserved1; 1104 1105 /* assoc status info */ 1106 __u64 sctpi_isacks; 1107 __u64 sctpi_osacks; 1108 __u64 sctpi_opackets; 1109 __u64 sctpi_ipackets; 1110 __u64 sctpi_rtxchunks; 1111 __u64 sctpi_outofseqtsns; 1112 __u64 sctpi_idupchunks; 1113 __u64 sctpi_gapcnt; 1114 __u64 sctpi_ouodchunks; 1115 __u64 sctpi_iuodchunks; 1116 __u64 sctpi_oodchunks; 1117 __u64 sctpi_iodchunks; 1118 __u64 sctpi_octrlchunks; 1119 __u64 sctpi_ictrlchunks; 1120 1121 /* primary transport info */ 1122 struct sockaddr_storage sctpi_p_address; 1123 __s32 sctpi_p_state; 1124 __u32 sctpi_p_cwnd; 1125 __u32 sctpi_p_srtt; 1126 __u32 sctpi_p_rto; 1127 __u32 sctpi_p_hbinterval; 1128 __u32 sctpi_p_pathmaxrxt; 1129 __u32 sctpi_p_sackdelay; 1130 __u32 sctpi_p_sackfreq; 1131 __u32 sctpi_p_ssthresh; 1132 __u32 sctpi_p_partial_bytes_acked; 1133 __u32 sctpi_p_flight_size; 1134 __u16 sctpi_p_error; 1135 __u16 __reserved2; 1136 1137 /* sctp sock info */ 1138 __u32 sctpi_s_autoclose; 1139 __u32 sctpi_s_adaptation_ind; 1140 __u32 sctpi_s_pd_point; 1141 __u8 sctpi_s_nodelay; 1142 __u8 sctpi_s_disable_fragments; 1143 __u8 sctpi_s_v4mapped; 1144 __u8 sctpi_s_frag_interleave; 1145 __u32 sctpi_s_type; 1146 __u32 __reserved3; 1147 }; 1148 1149 struct sctp_reset_streams { 1150 sctp_assoc_t srs_assoc_id; 1151 uint16_t srs_flags; 1152 uint16_t srs_number_streams; /* 0 == ALL */ 1153 uint16_t srs_stream_list[]; /* list if srs_num_streams is not 0 */ 1154 }; 1155 1156 struct sctp_add_streams { 1157 sctp_assoc_t sas_assoc_id; 1158 uint16_t sas_instrms; 1159 uint16_t sas_outstrms; 1160 }; 1161 1162 struct sctp_event { 1163 sctp_assoc_t se_assoc_id; 1164 uint16_t se_type; 1165 uint8_t se_on; 1166 }; 1167 1168 /* SCTP Stream schedulers */ 1169 enum sctp_sched_type { 1170 SCTP_SS_FCFS, 1171 SCTP_SS_DEFAULT = SCTP_SS_FCFS, 1172 SCTP_SS_PRIO, 1173 SCTP_SS_RR, 1174 SCTP_SS_MAX = SCTP_SS_RR 1175 }; 1176 1177 #endif /* _UAPI_SCTP_H */ 1178