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