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 <[email protected]> 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 <[email protected]> 38 * R. Stewart <[email protected]> 39 * K. Morneau <[email protected]> 40 * Q. Xie <[email protected]> 41 * Karl Knutson <[email protected]> 42 * Jon Grimm <[email protected]> 43 * Daisy Chang <[email protected]> 44 * Ryan Layer <[email protected]> 45 * Ardelle Fan <[email protected]> 46 * Sridhar Samudrala <[email protected]> 47 * Inaky Perez-Gonzalez <[email protected]> 48 * Vlad Yasevich <[email protected]> 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 #define SCTP_ASCONF_SUPPORTED 128 138 #define SCTP_AUTH_SUPPORTED 129 139 #define SCTP_ECN_SUPPORTED 130 140 #define SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 131 141 #define SCTP_EXPOSE_PF_STATE SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 142 143 /* PR-SCTP policies */ 144 #define SCTP_PR_SCTP_NONE 0x0000 145 #define SCTP_PR_SCTP_TTL 0x0010 146 #define SCTP_PR_SCTP_RTX 0x0020 147 #define SCTP_PR_SCTP_PRIO 0x0030 148 #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_PRIO 149 #define SCTP_PR_SCTP_MASK 0x0030 150 151 #define __SCTP_PR_INDEX(x) ((x >> 4) - 1) 152 #define SCTP_PR_INDEX(x) __SCTP_PR_INDEX(SCTP_PR_SCTP_ ## x) 153 154 #define SCTP_PR_POLICY(x) ((x) & SCTP_PR_SCTP_MASK) 155 #define SCTP_PR_SET_POLICY(flags, x) \ 156 do { \ 157 flags &= ~SCTP_PR_SCTP_MASK; \ 158 flags |= x; \ 159 } while (0) 160 161 #define SCTP_PR_TTL_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_TTL) 162 #define SCTP_PR_RTX_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_RTX) 163 #define SCTP_PR_PRIO_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_PRIO) 164 165 /* For enable stream reset */ 166 #define SCTP_ENABLE_RESET_STREAM_REQ 0x01 167 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x02 168 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x04 169 #define SCTP_ENABLE_STRRESET_MASK 0x07 170 171 #define SCTP_STREAM_RESET_INCOMING 0x01 172 #define SCTP_STREAM_RESET_OUTGOING 0x02 173 174 /* These are bit fields for msghdr->msg_flags. See section 5.1. */ 175 /* On user space Linux, these live in <bits/socket.h> as an enum. */ 176 enum sctp_msg_flags { 177 MSG_NOTIFICATION = 0x8000, 178 #define MSG_NOTIFICATION MSG_NOTIFICATION 179 }; 180 181 /* 5.3.1 SCTP Initiation Structure (SCTP_INIT) 182 * 183 * This cmsghdr structure provides information for initializing new 184 * SCTP associations with sendmsg(). The SCTP_INITMSG socket option 185 * uses this same data structure. This structure is not used for 186 * recvmsg(). 187 * 188 * cmsg_level cmsg_type cmsg_data[] 189 * ------------ ------------ ---------------------- 190 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg 191 */ 192 struct sctp_initmsg { 193 __u16 sinit_num_ostreams; 194 __u16 sinit_max_instreams; 195 __u16 sinit_max_attempts; 196 __u16 sinit_max_init_timeo; 197 }; 198 199 /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV) 200 * 201 * This cmsghdr structure specifies SCTP options for sendmsg() and 202 * describes SCTP header information about a received message through 203 * recvmsg(). 204 * 205 * cmsg_level cmsg_type cmsg_data[] 206 * ------------ ------------ ---------------------- 207 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo 208 */ 209 struct sctp_sndrcvinfo { 210 __u16 sinfo_stream; 211 __u16 sinfo_ssn; 212 __u16 sinfo_flags; 213 __u32 sinfo_ppid; 214 __u32 sinfo_context; 215 __u32 sinfo_timetolive; 216 __u32 sinfo_tsn; 217 __u32 sinfo_cumtsn; 218 sctp_assoc_t sinfo_assoc_id; 219 }; 220 221 /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO) 222 * 223 * This cmsghdr structure specifies SCTP options for sendmsg(). 224 * 225 * cmsg_level cmsg_type cmsg_data[] 226 * ------------ ------------ ------------------- 227 * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo 228 */ 229 struct sctp_sndinfo { 230 __u16 snd_sid; 231 __u16 snd_flags; 232 __u32 snd_ppid; 233 __u32 snd_context; 234 sctp_assoc_t snd_assoc_id; 235 }; 236 237 /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO) 238 * 239 * This cmsghdr structure describes SCTP receive information 240 * about a received message through recvmsg(). 241 * 242 * cmsg_level cmsg_type cmsg_data[] 243 * ------------ ------------ ------------------- 244 * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo 245 */ 246 struct sctp_rcvinfo { 247 __u16 rcv_sid; 248 __u16 rcv_ssn; 249 __u16 rcv_flags; 250 __u32 rcv_ppid; 251 __u32 rcv_tsn; 252 __u32 rcv_cumtsn; 253 __u32 rcv_context; 254 sctp_assoc_t rcv_assoc_id; 255 }; 256 257 /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO) 258 * 259 * This cmsghdr structure describes SCTP receive information 260 * of the next message that will be delivered through recvmsg() 261 * if this information is already available when delivering 262 * the current message. 263 * 264 * cmsg_level cmsg_type cmsg_data[] 265 * ------------ ------------ ------------------- 266 * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo 267 */ 268 struct sctp_nxtinfo { 269 __u16 nxt_sid; 270 __u16 nxt_flags; 271 __u32 nxt_ppid; 272 __u32 nxt_length; 273 sctp_assoc_t nxt_assoc_id; 274 }; 275 276 /* 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO) 277 * 278 * This cmsghdr structure specifies SCTP options for sendmsg(). 279 * 280 * cmsg_level cmsg_type cmsg_data[] 281 * ------------ ------------ ------------------- 282 * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo 283 */ 284 struct sctp_prinfo { 285 __u16 pr_policy; 286 __u32 pr_value; 287 }; 288 289 /* 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO) 290 * 291 * This cmsghdr structure specifies SCTP options for sendmsg(). 292 * 293 * cmsg_level cmsg_type cmsg_data[] 294 * ------------ ------------ ------------------- 295 * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo 296 */ 297 struct sctp_authinfo { 298 __u16 auth_keynumber; 299 }; 300 301 /* 302 * sinfo_flags: 16 bits (unsigned integer) 303 * 304 * This field may contain any of the following flags and is composed of 305 * a bitwise OR of these values. 306 */ 307 enum sctp_sinfo_flags { 308 SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */ 309 SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */ 310 SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */ 311 SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */ 312 /* 2 bits here have been used by SCTP_PR_SCTP_MASK */ 313 SCTP_SENDALL = (1 << 6), 314 SCTP_PR_SCTP_ALL = (1 << 7), 315 SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */ 316 SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */ 317 }; 318 319 typedef union { 320 __u8 raw; 321 struct sctp_initmsg init; 322 struct sctp_sndrcvinfo sndrcv; 323 } sctp_cmsg_data_t; 324 325 /* These are cmsg_types. */ 326 typedef enum sctp_cmsg_type { 327 SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ 328 #define SCTP_INIT SCTP_INIT 329 SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ 330 #define SCTP_SNDRCV SCTP_SNDRCV 331 SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */ 332 #define SCTP_SNDINFO SCTP_SNDINFO 333 SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */ 334 #define SCTP_RCVINFO SCTP_RCVINFO 335 SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */ 336 #define SCTP_NXTINFO SCTP_NXTINFO 337 SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */ 338 #define SCTP_PRINFO SCTP_PRINFO 339 SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure */ 340 #define SCTP_AUTHINFO SCTP_AUTHINFO 341 SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */ 342 #define SCTP_DSTADDRV4 SCTP_DSTADDRV4 343 SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */ 344 #define SCTP_DSTADDRV6 SCTP_DSTADDRV6 345 } sctp_cmsg_t; 346 347 /* 348 * 5.3.1.1 SCTP_ASSOC_CHANGE 349 * 350 * Communication notifications inform the ULP that an SCTP association 351 * has either begun or ended. The identifier for a new association is 352 * provided by this notificaion. The notification information has the 353 * following format: 354 * 355 */ 356 struct sctp_assoc_change { 357 __u16 sac_type; 358 __u16 sac_flags; 359 __u32 sac_length; 360 __u16 sac_state; 361 __u16 sac_error; 362 __u16 sac_outbound_streams; 363 __u16 sac_inbound_streams; 364 sctp_assoc_t sac_assoc_id; 365 __u8 sac_info[0]; 366 }; 367 368 /* 369 * sac_state: 32 bits (signed integer) 370 * 371 * This field holds one of a number of values that communicate the 372 * event that happened to the association. They include: 373 * 374 * Note: The following state names deviate from the API draft as 375 * the names clash too easily with other kernel symbols. 376 */ 377 enum sctp_sac_state { 378 SCTP_COMM_UP, 379 SCTP_COMM_LOST, 380 SCTP_RESTART, 381 SCTP_SHUTDOWN_COMP, 382 SCTP_CANT_STR_ASSOC, 383 }; 384 385 /* 386 * 5.3.1.2 SCTP_PEER_ADDR_CHANGE 387 * 388 * When a destination address on a multi-homed peer encounters a change 389 * an interface details event is sent. The information has the 390 * following structure: 391 */ 392 struct sctp_paddr_change { 393 __u16 spc_type; 394 __u16 spc_flags; 395 __u32 spc_length; 396 struct sockaddr_storage spc_aaddr; 397 int spc_state; 398 int spc_error; 399 sctp_assoc_t spc_assoc_id; 400 } __attribute__((packed, aligned(4))); 401 402 /* 403 * spc_state: 32 bits (signed integer) 404 * 405 * This field holds one of a number of values that communicate the 406 * event that happened to the address. They include: 407 */ 408 enum sctp_spc_state { 409 SCTP_ADDR_AVAILABLE, 410 SCTP_ADDR_UNREACHABLE, 411 SCTP_ADDR_REMOVED, 412 SCTP_ADDR_ADDED, 413 SCTP_ADDR_MADE_PRIM, 414 SCTP_ADDR_CONFIRMED, 415 SCTP_ADDR_POTENTIALLY_FAILED, 416 #define SCTP_ADDR_PF SCTP_ADDR_POTENTIALLY_FAILED 417 }; 418 419 420 /* 421 * 5.3.1.3 SCTP_REMOTE_ERROR 422 * 423 * A remote peer may send an Operational Error message to its peer. 424 * This message indicates a variety of error conditions on an 425 * association. The entire error TLV as it appears on the wire is 426 * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP 427 * specification [SCTP] and any extensions for a list of possible 428 * error formats. SCTP error TLVs have the format: 429 */ 430 struct sctp_remote_error { 431 __u16 sre_type; 432 __u16 sre_flags; 433 __u32 sre_length; 434 __be16 sre_error; 435 sctp_assoc_t sre_assoc_id; 436 __u8 sre_data[0]; 437 }; 438 439 440 /* 441 * 5.3.1.4 SCTP_SEND_FAILED 442 * 443 * If SCTP cannot deliver a message it may return the message as a 444 * notification. 445 */ 446 struct sctp_send_failed { 447 __u16 ssf_type; 448 __u16 ssf_flags; 449 __u32 ssf_length; 450 __u32 ssf_error; 451 struct sctp_sndrcvinfo ssf_info; 452 sctp_assoc_t ssf_assoc_id; 453 __u8 ssf_data[0]; 454 }; 455 456 struct sctp_send_failed_event { 457 __u16 ssf_type; 458 __u16 ssf_flags; 459 __u32 ssf_length; 460 __u32 ssf_error; 461 struct sctp_sndinfo ssfe_info; 462 sctp_assoc_t ssf_assoc_id; 463 __u8 ssf_data[0]; 464 }; 465 466 /* 467 * ssf_flags: 16 bits (unsigned integer) 468 * 469 * The flag value will take one of the following values 470 * 471 * SCTP_DATA_UNSENT - Indicates that the data was never put on 472 * the wire. 473 * 474 * SCTP_DATA_SENT - Indicates that the data was put on the wire. 475 * Note that this does not necessarily mean that the 476 * data was (or was not) successfully delivered. 477 */ 478 enum sctp_ssf_flags { 479 SCTP_DATA_UNSENT, 480 SCTP_DATA_SENT, 481 }; 482 483 /* 484 * 5.3.1.5 SCTP_SHUTDOWN_EVENT 485 * 486 * When a peer sends a SHUTDOWN, SCTP delivers this notification to 487 * inform the application that it should cease sending data. 488 */ 489 struct sctp_shutdown_event { 490 __u16 sse_type; 491 __u16 sse_flags; 492 __u32 sse_length; 493 sctp_assoc_t sse_assoc_id; 494 }; 495 496 /* 497 * 5.3.1.6 SCTP_ADAPTATION_INDICATION 498 * 499 * When a peer sends a Adaptation Layer Indication parameter , SCTP 500 * delivers this notification to inform the application 501 * that of the peers requested adaptation layer. 502 */ 503 struct sctp_adaptation_event { 504 __u16 sai_type; 505 __u16 sai_flags; 506 __u32 sai_length; 507 __u32 sai_adaptation_ind; 508 sctp_assoc_t sai_assoc_id; 509 }; 510 511 /* 512 * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT 513 * 514 * When a receiver is engaged in a partial delivery of a 515 * message this notification will be used to indicate 516 * various events. 517 */ 518 struct sctp_pdapi_event { 519 __u16 pdapi_type; 520 __u16 pdapi_flags; 521 __u32 pdapi_length; 522 __u32 pdapi_indication; 523 sctp_assoc_t pdapi_assoc_id; 524 __u32 pdapi_stream; 525 __u32 pdapi_seq; 526 }; 527 528 enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; 529 530 /* 531 * 5.3.1.8. SCTP_AUTHENTICATION_EVENT 532 * 533 * When a receiver is using authentication this message will provide 534 * notifications regarding new keys being made active as well as errors. 535 */ 536 struct sctp_authkey_event { 537 __u16 auth_type; 538 __u16 auth_flags; 539 __u32 auth_length; 540 __u16 auth_keynumber; 541 __u16 auth_altkeynumber; 542 __u32 auth_indication; 543 sctp_assoc_t auth_assoc_id; 544 }; 545 546 enum { 547 SCTP_AUTH_NEW_KEY, 548 #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY /* compatible with before */ 549 SCTP_AUTH_FREE_KEY, 550 SCTP_AUTH_NO_AUTH, 551 }; 552 553 /* 554 * 6.1.9. SCTP_SENDER_DRY_EVENT 555 * 556 * When the SCTP stack has no more user data to send or retransmit, this 557 * notification is given to the user. Also, at the time when a user app 558 * subscribes to this event, if there is no data to be sent or 559 * retransmit, the stack will immediately send up this notification. 560 */ 561 struct sctp_sender_dry_event { 562 __u16 sender_dry_type; 563 __u16 sender_dry_flags; 564 __u32 sender_dry_length; 565 sctp_assoc_t sender_dry_assoc_id; 566 }; 567 568 #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 569 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 570 #define SCTP_STREAM_RESET_DENIED 0x0004 571 #define SCTP_STREAM_RESET_FAILED 0x0008 572 struct sctp_stream_reset_event { 573 __u16 strreset_type; 574 __u16 strreset_flags; 575 __u32 strreset_length; 576 sctp_assoc_t strreset_assoc_id; 577 __u16 strreset_stream_list[]; 578 }; 579 580 #define SCTP_ASSOC_RESET_DENIED 0x0004 581 #define SCTP_ASSOC_RESET_FAILED 0x0008 582 struct sctp_assoc_reset_event { 583 __u16 assocreset_type; 584 __u16 assocreset_flags; 585 __u32 assocreset_length; 586 sctp_assoc_t assocreset_assoc_id; 587 __u32 assocreset_local_tsn; 588 __u32 assocreset_remote_tsn; 589 }; 590 591 #define SCTP_ASSOC_CHANGE_DENIED 0x0004 592 #define SCTP_ASSOC_CHANGE_FAILED 0x0008 593 #define SCTP_STREAM_CHANGE_DENIED SCTP_ASSOC_CHANGE_DENIED 594 #define SCTP_STREAM_CHANGE_FAILED SCTP_ASSOC_CHANGE_FAILED 595 struct sctp_stream_change_event { 596 __u16 strchange_type; 597 __u16 strchange_flags; 598 __u32 strchange_length; 599 sctp_assoc_t strchange_assoc_id; 600 __u16 strchange_instrms; 601 __u16 strchange_outstrms; 602 }; 603 604 /* 605 * Described in Section 7.3 606 * Ancillary Data and Notification Interest Options 607 */ 608 struct sctp_event_subscribe { 609 __u8 sctp_data_io_event; 610 __u8 sctp_association_event; 611 __u8 sctp_address_event; 612 __u8 sctp_send_failure_event; 613 __u8 sctp_peer_error_event; 614 __u8 sctp_shutdown_event; 615 __u8 sctp_partial_delivery_event; 616 __u8 sctp_adaptation_layer_event; 617 __u8 sctp_authentication_event; 618 __u8 sctp_sender_dry_event; 619 __u8 sctp_stream_reset_event; 620 __u8 sctp_assoc_reset_event; 621 __u8 sctp_stream_change_event; 622 __u8 sctp_send_failure_event_event; 623 }; 624 625 /* 626 * 5.3.1 SCTP Notification Structure 627 * 628 * The notification structure is defined as the union of all 629 * notification types. 630 * 631 */ 632 union sctp_notification { 633 struct { 634 __u16 sn_type; /* Notification type. */ 635 __u16 sn_flags; 636 __u32 sn_length; 637 } sn_header; 638 struct sctp_assoc_change sn_assoc_change; 639 struct sctp_paddr_change sn_paddr_change; 640 struct sctp_remote_error sn_remote_error; 641 struct sctp_send_failed sn_send_failed; 642 struct sctp_shutdown_event sn_shutdown_event; 643 struct sctp_adaptation_event sn_adaptation_event; 644 struct sctp_pdapi_event sn_pdapi_event; 645 struct sctp_authkey_event sn_authkey_event; 646 struct sctp_sender_dry_event sn_sender_dry_event; 647 struct sctp_stream_reset_event sn_strreset_event; 648 struct sctp_assoc_reset_event sn_assocreset_event; 649 struct sctp_stream_change_event sn_strchange_event; 650 struct sctp_send_failed_event sn_send_failed_event; 651 }; 652 653 /* Section 5.3.1 654 * All standard values for sn_type flags are greater than 2^15. 655 * Values from 2^15 and down are reserved. 656 */ 657 658 enum sctp_sn_type { 659 SCTP_SN_TYPE_BASE = (1<<15), 660 SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE, 661 #define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT 662 SCTP_ASSOC_CHANGE, 663 #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE 664 SCTP_PEER_ADDR_CHANGE, 665 #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE 666 SCTP_SEND_FAILED, 667 #define SCTP_SEND_FAILED SCTP_SEND_FAILED 668 SCTP_REMOTE_ERROR, 669 #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR 670 SCTP_SHUTDOWN_EVENT, 671 #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT 672 SCTP_PARTIAL_DELIVERY_EVENT, 673 #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT 674 SCTP_ADAPTATION_INDICATION, 675 #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION 676 SCTP_AUTHENTICATION_EVENT, 677 #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT 678 SCTP_SENDER_DRY_EVENT, 679 #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT 680 SCTP_STREAM_RESET_EVENT, 681 #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT 682 SCTP_ASSOC_RESET_EVENT, 683 #define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT 684 SCTP_STREAM_CHANGE_EVENT, 685 #define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT 686 SCTP_SEND_FAILED_EVENT, 687 #define SCTP_SEND_FAILED_EVENT SCTP_SEND_FAILED_EVENT 688 SCTP_SN_TYPE_MAX = SCTP_SEND_FAILED_EVENT, 689 #define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX 690 }; 691 692 /* Notification error codes used to fill up the error fields in some 693 * notifications. 694 * SCTP_PEER_ADDRESS_CHAGE : spc_error 695 * SCTP_ASSOC_CHANGE : sac_error 696 * These names should be potentially included in the draft 04 of the SCTP 697 * sockets API specification. 698 */ 699 typedef enum sctp_sn_error { 700 SCTP_FAILED_THRESHOLD, 701 SCTP_RECEIVED_SACK, 702 SCTP_HEARTBEAT_SUCCESS, 703 SCTP_RESPONSE_TO_USER_REQ, 704 SCTP_INTERNAL_ERROR, 705 SCTP_SHUTDOWN_GUARD_EXPIRES, 706 SCTP_PEER_FAULTY, 707 } sctp_sn_error_t; 708 709 /* 710 * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) 711 * 712 * The protocol parameters used to initialize and bound retransmission 713 * timeout (RTO) are tunable. See [SCTP] for more information on how 714 * these parameters are used in RTO calculation. 715 */ 716 struct sctp_rtoinfo { 717 sctp_assoc_t srto_assoc_id; 718 __u32 srto_initial; 719 __u32 srto_max; 720 __u32 srto_min; 721 }; 722 723 /* 724 * 7.1.2 Association Parameters (SCTP_ASSOCINFO) 725 * 726 * This option is used to both examine and set various association and 727 * endpoint parameters. 728 */ 729 struct sctp_assocparams { 730 sctp_assoc_t sasoc_assoc_id; 731 __u16 sasoc_asocmaxrxt; 732 __u16 sasoc_number_peer_destinations; 733 __u32 sasoc_peer_rwnd; 734 __u32 sasoc_local_rwnd; 735 __u32 sasoc_cookie_life; 736 }; 737 738 /* 739 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) 740 * 741 * Requests that the peer mark the enclosed address as the association 742 * primary. The enclosed address must be one of the association's 743 * locally bound addresses. The following structure is used to make a 744 * set primary request: 745 */ 746 struct sctp_setpeerprim { 747 sctp_assoc_t sspp_assoc_id; 748 struct sockaddr_storage sspp_addr; 749 } __attribute__((packed, aligned(4))); 750 751 /* 752 * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) 753 * 754 * Requests that the local SCTP stack use the enclosed peer address as 755 * the association primary. The enclosed address must be one of the 756 * association peer's addresses. The following structure is used to 757 * make a set peer primary request: 758 */ 759 struct sctp_prim { 760 sctp_assoc_t ssp_assoc_id; 761 struct sockaddr_storage ssp_addr; 762 } __attribute__((packed, aligned(4))); 763 764 /* For backward compatibility use, define the old name too */ 765 #define sctp_setprim sctp_prim 766 767 /* 768 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER) 769 * 770 * Requests that the local endpoint set the specified Adaptation Layer 771 * Indication parameter for all future INIT and INIT-ACK exchanges. 772 */ 773 struct sctp_setadaptation { 774 __u32 ssb_adaptation_ind; 775 }; 776 777 /* 778 * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) 779 * 780 * Applications can enable or disable heartbeats for any peer address 781 * of an association, modify an address's heartbeat interval, force a 782 * heartbeat to be sent immediately, and adjust the address's maximum 783 * number of retransmissions sent before an address is considered 784 * unreachable. The following structure is used to access and modify an 785 * address's parameters: 786 */ 787 enum sctp_spp_flags { 788 SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/ 789 SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/ 790 SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE, 791 SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/ 792 SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/ 793 SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ 794 SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE, 795 SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/ 796 SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/ 797 SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE, 798 SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */ 799 SPP_IPV6_FLOWLABEL = 1<<8, 800 SPP_DSCP = 1<<9, 801 }; 802 803 struct sctp_paddrparams { 804 sctp_assoc_t spp_assoc_id; 805 struct sockaddr_storage spp_address; 806 __u32 spp_hbinterval; 807 __u16 spp_pathmaxrxt; 808 __u32 spp_pathmtu; 809 __u32 spp_sackdelay; 810 __u32 spp_flags; 811 __u32 spp_ipv6_flowlabel; 812 __u8 spp_dscp; 813 } __attribute__((packed, aligned(4))); 814 815 /* 816 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK) 817 * 818 * This set option adds a chunk type that the user is requesting to be 819 * received only in an authenticated way. Changes to the list of chunks 820 * will only effect future associations on the socket. 821 */ 822 struct sctp_authchunk { 823 __u8 sauth_chunk; 824 }; 825 826 /* 827 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT) 828 * 829 * This option gets or sets the list of HMAC algorithms that the local 830 * endpoint requires the peer to use. 831 */ 832 #ifndef __KERNEL__ 833 /* This here is only used by user space as is. It might not be a good idea 834 * to export/reveal the whole structure with reserved fields etc. 835 */ 836 enum { 837 SCTP_AUTH_HMAC_ID_SHA1 = 1, 838 SCTP_AUTH_HMAC_ID_SHA256 = 3, 839 }; 840 #endif 841 842 struct sctp_hmacalgo { 843 __u32 shmac_num_idents; 844 __u16 shmac_idents[]; 845 }; 846 847 /* Sadly, user and kernel space have different names for 848 * this structure member, so this is to not break anything. 849 */ 850 #define shmac_number_of_idents shmac_num_idents 851 852 /* 853 * 7.1.20. Set a shared key (SCTP_AUTH_KEY) 854 * 855 * This option will set a shared secret key which is used to build an 856 * association shared key. 857 */ 858 struct sctp_authkey { 859 sctp_assoc_t sca_assoc_id; 860 __u16 sca_keynumber; 861 __u16 sca_keylength; 862 __u8 sca_key[]; 863 }; 864 865 /* 866 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY) 867 * 868 * This option will get or set the active shared key to be used to build 869 * the association shared key. 870 */ 871 872 struct sctp_authkeyid { 873 sctp_assoc_t scact_assoc_id; 874 __u16 scact_keynumber; 875 }; 876 877 878 /* 879 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK) 880 * 881 * This option will effect the way delayed acks are performed. This 882 * option allows you to get or set the delayed ack time, in 883 * milliseconds. It also allows changing the delayed ack frequency. 884 * Changing the frequency to 1 disables the delayed sack algorithm. If 885 * the assoc_id is 0, then this sets or gets the endpoints default 886 * values. If the assoc_id field is non-zero, then the set or get 887 * effects the specified association for the one to many model (the 888 * assoc_id field is ignored by the one to one model). Note that if 889 * sack_delay or sack_freq are 0 when setting this option, then the 890 * current values will remain unchanged. 891 */ 892 struct sctp_sack_info { 893 sctp_assoc_t sack_assoc_id; 894 uint32_t sack_delay; 895 uint32_t sack_freq; 896 }; 897 898 struct sctp_assoc_value { 899 sctp_assoc_t assoc_id; 900 uint32_t assoc_value; 901 }; 902 903 struct sctp_stream_value { 904 sctp_assoc_t assoc_id; 905 uint16_t stream_id; 906 uint16_t stream_value; 907 }; 908 909 /* 910 * 7.2.2 Peer Address Information 911 * 912 * Applications can retrieve information about a specific peer address 913 * of an association, including its reachability state, congestion 914 * window, and retransmission timer values. This information is 915 * read-only. The following structure is used to access this 916 * information: 917 */ 918 struct sctp_paddrinfo { 919 sctp_assoc_t spinfo_assoc_id; 920 struct sockaddr_storage spinfo_address; 921 __s32 spinfo_state; 922 __u32 spinfo_cwnd; 923 __u32 spinfo_srtt; 924 __u32 spinfo_rto; 925 __u32 spinfo_mtu; 926 } __attribute__((packed, aligned(4))); 927 928 /* Peer addresses's state. */ 929 /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x] 930 * calls. 931 * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters. 932 * Not yet confirmed by a heartbeat and not available for data 933 * transfers. 934 * ACTIVE : Peer address confirmed, active and available for data transfers. 935 * INACTIVE: Peer address inactive and not available for data transfers. 936 */ 937 enum sctp_spinfo_state { 938 SCTP_INACTIVE, 939 SCTP_PF, 940 #define SCTP_POTENTIALLY_FAILED SCTP_PF 941 SCTP_ACTIVE, 942 SCTP_UNCONFIRMED, 943 SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */ 944 }; 945 946 /* 947 * 7.2.1 Association Status (SCTP_STATUS) 948 * 949 * Applications can retrieve current status information about an 950 * association, including association state, peer receiver window size, 951 * number of unacked data chunks, and number of data chunks pending 952 * receipt. This information is read-only. The following structure is 953 * used to access this information: 954 */ 955 struct sctp_status { 956 sctp_assoc_t sstat_assoc_id; 957 __s32 sstat_state; 958 __u32 sstat_rwnd; 959 __u16 sstat_unackdata; 960 __u16 sstat_penddata; 961 __u16 sstat_instrms; 962 __u16 sstat_outstrms; 963 __u32 sstat_fragmentation_point; 964 struct sctp_paddrinfo sstat_primary; 965 }; 966 967 /* 968 * 7.2.3. Get the list of chunks the peer requires to be authenticated 969 * (SCTP_PEER_AUTH_CHUNKS) 970 * 971 * This option gets a list of chunks for a specified association that 972 * the peer requires to be received authenticated only. 973 */ 974 struct sctp_authchunks { 975 sctp_assoc_t gauth_assoc_id; 976 __u32 gauth_number_of_chunks; 977 uint8_t gauth_chunks[]; 978 }; 979 980 /* The broken spelling has been released already in lksctp-tools header, 981 * so don't break anyone, now that it's fixed. 982 */ 983 #define guth_number_of_chunks gauth_number_of_chunks 984 985 /* Association states. */ 986 enum sctp_sstat_state { 987 SCTP_EMPTY = 0, 988 SCTP_CLOSED = 1, 989 SCTP_COOKIE_WAIT = 2, 990 SCTP_COOKIE_ECHOED = 3, 991 SCTP_ESTABLISHED = 4, 992 SCTP_SHUTDOWN_PENDING = 5, 993 SCTP_SHUTDOWN_SENT = 6, 994 SCTP_SHUTDOWN_RECEIVED = 7, 995 SCTP_SHUTDOWN_ACK_SENT = 8, 996 }; 997 998 /* 999 * 8.2.6. Get the Current Identifiers of Associations 1000 * (SCTP_GET_ASSOC_ID_LIST) 1001 * 1002 * This option gets the current list of SCTP association identifiers of 1003 * the SCTP associations handled by a one-to-many style socket. 1004 */ 1005 struct sctp_assoc_ids { 1006 __u32 gaids_number_of_ids; 1007 sctp_assoc_t gaids_assoc_id[]; 1008 }; 1009 1010 /* 1011 * 8.3, 8.5 get all peer/local addresses in an association. 1012 * This parameter struct is used by SCTP_GET_PEER_ADDRS and 1013 * SCTP_GET_LOCAL_ADDRS socket options used internally to implement 1014 * sctp_getpaddrs() and sctp_getladdrs() API. 1015 */ 1016 struct sctp_getaddrs_old { 1017 sctp_assoc_t assoc_id; 1018 int addr_num; 1019 #ifdef __KERNEL__ 1020 struct sockaddr __user *addrs; 1021 #else 1022 struct sockaddr *addrs; 1023 #endif 1024 }; 1025 1026 struct sctp_getaddrs { 1027 sctp_assoc_t assoc_id; /*input*/ 1028 __u32 addr_num; /*output*/ 1029 __u8 addrs[0]; /*output, variable size*/ 1030 }; 1031 1032 /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves 1033 * association stats. All stats are counts except sas_maxrto and 1034 * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since 1035 * the last call. Will return 0 when RTO was not update since last call 1036 */ 1037 struct sctp_assoc_stats { 1038 sctp_assoc_t sas_assoc_id; /* Input */ 1039 /* Transport of observed max RTO */ 1040 struct sockaddr_storage sas_obs_rto_ipaddr; 1041 __u64 sas_maxrto; /* Maximum Observed RTO for period */ 1042 __u64 sas_isacks; /* SACKs received */ 1043 __u64 sas_osacks; /* SACKs sent */ 1044 __u64 sas_opackets; /* Packets sent */ 1045 __u64 sas_ipackets; /* Packets received */ 1046 __u64 sas_rtxchunks; /* Retransmitted Chunks */ 1047 __u64 sas_outofseqtsns;/* TSN received > next expected */ 1048 __u64 sas_idupchunks; /* Dups received (ordered+unordered) */ 1049 __u64 sas_gapcnt; /* Gap Acknowledgements Received */ 1050 __u64 sas_ouodchunks; /* Unordered data chunks sent */ 1051 __u64 sas_iuodchunks; /* Unordered data chunks received */ 1052 __u64 sas_oodchunks; /* Ordered data chunks sent */ 1053 __u64 sas_iodchunks; /* Ordered data chunks received */ 1054 __u64 sas_octrlchunks; /* Control chunks sent */ 1055 __u64 sas_ictrlchunks; /* Control chunks received */ 1056 }; 1057 1058 /* 1059 * 8.1 sctp_bindx() 1060 * 1061 * The flags parameter is formed from the bitwise OR of zero or more of the 1062 * following currently defined flags: 1063 */ 1064 #define SCTP_BINDX_ADD_ADDR 0x01 1065 #define SCTP_BINDX_REM_ADDR 0x02 1066 1067 /* This is the structure that is passed as an argument(optval) to 1068 * getsockopt(SCTP_SOCKOPT_PEELOFF). 1069 */ 1070 typedef struct { 1071 sctp_assoc_t associd; 1072 int sd; 1073 } sctp_peeloff_arg_t; 1074 1075 typedef struct { 1076 sctp_peeloff_arg_t p_arg; 1077 unsigned flags; 1078 } sctp_peeloff_flags_arg_t; 1079 1080 /* 1081 * Peer Address Thresholds socket option 1082 */ 1083 struct sctp_paddrthlds { 1084 sctp_assoc_t spt_assoc_id; 1085 struct sockaddr_storage spt_address; 1086 __u16 spt_pathmaxrxt; 1087 __u16 spt_pathpfthld; 1088 }; 1089 1090 /* 1091 * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status 1092 */ 1093 struct sctp_prstatus { 1094 sctp_assoc_t sprstat_assoc_id; 1095 __u16 sprstat_sid; 1096 __u16 sprstat_policy; 1097 __u64 sprstat_abandoned_unsent; 1098 __u64 sprstat_abandoned_sent; 1099 }; 1100 1101 struct sctp_default_prinfo { 1102 sctp_assoc_t pr_assoc_id; 1103 __u32 pr_value; 1104 __u16 pr_policy; 1105 }; 1106 1107 struct sctp_info { 1108 __u32 sctpi_tag; 1109 __u32 sctpi_state; 1110 __u32 sctpi_rwnd; 1111 __u16 sctpi_unackdata; 1112 __u16 sctpi_penddata; 1113 __u16 sctpi_instrms; 1114 __u16 sctpi_outstrms; 1115 __u32 sctpi_fragmentation_point; 1116 __u32 sctpi_inqueue; 1117 __u32 sctpi_outqueue; 1118 __u32 sctpi_overall_error; 1119 __u32 sctpi_max_burst; 1120 __u32 sctpi_maxseg; 1121 __u32 sctpi_peer_rwnd; 1122 __u32 sctpi_peer_tag; 1123 __u8 sctpi_peer_capable; 1124 __u8 sctpi_peer_sack; 1125 __u16 __reserved1; 1126 1127 /* assoc status info */ 1128 __u64 sctpi_isacks; 1129 __u64 sctpi_osacks; 1130 __u64 sctpi_opackets; 1131 __u64 sctpi_ipackets; 1132 __u64 sctpi_rtxchunks; 1133 __u64 sctpi_outofseqtsns; 1134 __u64 sctpi_idupchunks; 1135 __u64 sctpi_gapcnt; 1136 __u64 sctpi_ouodchunks; 1137 __u64 sctpi_iuodchunks; 1138 __u64 sctpi_oodchunks; 1139 __u64 sctpi_iodchunks; 1140 __u64 sctpi_octrlchunks; 1141 __u64 sctpi_ictrlchunks; 1142 1143 /* primary transport info */ 1144 struct sockaddr_storage sctpi_p_address; 1145 __s32 sctpi_p_state; 1146 __u32 sctpi_p_cwnd; 1147 __u32 sctpi_p_srtt; 1148 __u32 sctpi_p_rto; 1149 __u32 sctpi_p_hbinterval; 1150 __u32 sctpi_p_pathmaxrxt; 1151 __u32 sctpi_p_sackdelay; 1152 __u32 sctpi_p_sackfreq; 1153 __u32 sctpi_p_ssthresh; 1154 __u32 sctpi_p_partial_bytes_acked; 1155 __u32 sctpi_p_flight_size; 1156 __u16 sctpi_p_error; 1157 __u16 __reserved2; 1158 1159 /* sctp sock info */ 1160 __u32 sctpi_s_autoclose; 1161 __u32 sctpi_s_adaptation_ind; 1162 __u32 sctpi_s_pd_point; 1163 __u8 sctpi_s_nodelay; 1164 __u8 sctpi_s_disable_fragments; 1165 __u8 sctpi_s_v4mapped; 1166 __u8 sctpi_s_frag_interleave; 1167 __u32 sctpi_s_type; 1168 __u32 __reserved3; 1169 }; 1170 1171 struct sctp_reset_streams { 1172 sctp_assoc_t srs_assoc_id; 1173 uint16_t srs_flags; 1174 uint16_t srs_number_streams; /* 0 == ALL */ 1175 uint16_t srs_stream_list[]; /* list if srs_num_streams is not 0 */ 1176 }; 1177 1178 struct sctp_add_streams { 1179 sctp_assoc_t sas_assoc_id; 1180 uint16_t sas_instrms; 1181 uint16_t sas_outstrms; 1182 }; 1183 1184 struct sctp_event { 1185 sctp_assoc_t se_assoc_id; 1186 uint16_t se_type; 1187 uint8_t se_on; 1188 }; 1189 1190 /* SCTP Stream schedulers */ 1191 enum sctp_sched_type { 1192 SCTP_SS_FCFS, 1193 SCTP_SS_DEFAULT = SCTP_SS_FCFS, 1194 SCTP_SS_PRIO, 1195 SCTP_SS_RR, 1196 SCTP_SS_MAX = SCTP_SS_RR 1197 }; 1198 1199 #endif /* _UAPI_SCTP_H */ 1200