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 (at) 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 (at) acm.org> 38 * R. Stewart <randall (at) sctp.chicago.il.us> 39 * K. Morneau <kmorneau (at) cisco.com> 40 * Q. Xie <qxie1 (at) email.mot.com> 41 * Karl Knutson <karl (at) athena.chicago.il.us> 42 * Jon Grimm <jgrimm (at) us.ibm.com> 43 * Daisy Chang <daisyc (at) us.ibm.com> 44 * Ryan Layer <rmlayer (at) us.ibm.com> 45 * Ardelle Fan <ardelle.fan (at) intel.com> 46 * Sridhar Samudrala <sri (at) us.ibm.com> 47 * Inaky Perez-Gonzalez <inaky.gonzalez (at) intel.com> 48 * Vlad Yasevich <vladislav.yasevich (at) 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 /* The following symbols come from the Sockets API Extensions for 63 * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>. 64 */ 65 #define SCTP_RTOINFO 0 66 #define SCTP_ASSOCINFO 1 67 #define SCTP_INITMSG 2 68 #define SCTP_NODELAY 3 /* Get/set nodelay option. */ 69 #define SCTP_AUTOCLOSE 4 70 #define SCTP_SET_PEER_PRIMARY_ADDR 5 71 #define SCTP_PRIMARY_ADDR 6 72 #define SCTP_ADAPTATION_LAYER 7 73 #define SCTP_DISABLE_FRAGMENTS 8 74 #define SCTP_PEER_ADDR_PARAMS 9 75 #define SCTP_DEFAULT_SEND_PARAM 10 76 #define SCTP_EVENTS 11 77 #define SCTP_I_WANT_MAPPED_V4_ADDR 12 /* Turn on/off mapped v4 addresses */ 78 #define SCTP_MAXSEG 13 /* Get/set maximum fragment. */ 79 #define SCTP_STATUS 14 80 #define SCTP_GET_PEER_ADDR_INFO 15 81 #define SCTP_DELAYED_ACK_TIME 16 82 #define SCTP_DELAYED_ACK SCTP_DELAYED_ACK_TIME 83 #define SCTP_DELAYED_SACK SCTP_DELAYED_ACK_TIME 84 #define SCTP_CONTEXT 17 85 #define SCTP_FRAGMENT_INTERLEAVE 18 86 #define SCTP_PARTIAL_DELIVERY_POINT 19 /* Set/Get partial delivery point */ 87 #define SCTP_MAX_BURST 20 /* Set/Get max burst */ 88 #define SCTP_AUTH_CHUNK 21 /* Set only: add a chunk type to authenticate */ 89 #define SCTP_HMAC_IDENT 22 90 #define SCTP_AUTH_KEY 23 91 #define SCTP_AUTH_ACTIVE_KEY 24 92 #define SCTP_AUTH_DELETE_KEY 25 93 #define SCTP_PEER_AUTH_CHUNKS 26 /* Read only */ 94 #define SCTP_LOCAL_AUTH_CHUNKS 27 /* Read only */ 95 #define SCTP_GET_ASSOC_NUMBER 28 /* Read only */ 96 #define SCTP_GET_ASSOC_ID_LIST 29 /* Read only */ 97 #define SCTP_AUTO_ASCONF 30 98 #define SCTP_PEER_ADDR_THLDS 31 99 #define SCTP_RECVRCVINFO 32 100 #define SCTP_RECVNXTINFO 33 101 #define SCTP_DEFAULT_SNDINFO 34 102 #define SCTP_AUTH_DEACTIVATE_KEY 35 103 #define SCTP_REUSE_PORT 36 104 105 /* Internal Socket Options. Some of the sctp library functions are 106 * implemented using these socket options. 107 */ 108 #define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */ 109 #define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */ 110 #define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */ 111 /* Options 104-106 are deprecated and removed. Do not use this space */ 112 #define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */ 113 #define SCTP_GET_PEER_ADDRS 108 /* Get all peer address. */ 114 #define SCTP_GET_LOCAL_ADDRS 109 /* Get all local address. */ 115 #define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */ 116 #define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */ 117 #define SCTP_GET_ASSOC_STATS 112 /* Read only */ 118 #define SCTP_PR_SUPPORTED 113 119 #define SCTP_DEFAULT_PRINFO 114 120 #define SCTP_PR_ASSOC_STATUS 115 121 #define SCTP_PR_STREAM_STATUS 116 122 #define SCTP_RECONFIG_SUPPORTED 117 123 #define SCTP_ENABLE_STREAM_RESET 118 124 #define SCTP_RESET_STREAMS 119 125 #define SCTP_RESET_ASSOC 120 126 #define SCTP_ADD_STREAMS 121 127 #define SCTP_SOCKOPT_PEELOFF_FLAGS 122 128 #define SCTP_STREAM_SCHEDULER 123 129 #define SCTP_STREAM_SCHEDULER_VALUE 124 130 #define SCTP_INTERLEAVING_SUPPORTED 125 131 #define SCTP_SENDMSG_CONNECT 126 132 #define SCTP_EVENT 127 133 134 /* PR-SCTP policies */ 135 #define SCTP_PR_SCTP_NONE 0x0000 136 #define SCTP_PR_SCTP_TTL 0x0010 137 #define SCTP_PR_SCTP_RTX 0x0020 138 #define SCTP_PR_SCTP_PRIO 0x0030 139 #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_PRIO 140 #define SCTP_PR_SCTP_MASK 0x0030 141 142 #define __SCTP_PR_INDEX(x) ((x >> 4) - 1) 143 #define SCTP_PR_INDEX(x) __SCTP_PR_INDEX(SCTP_PR_SCTP_ ## x) 144 145 #define SCTP_PR_POLICY(x) ((x) & SCTP_PR_SCTP_MASK) 146 #define SCTP_PR_SET_POLICY(flags, x) \ 147 do { \ 148 flags &= ~SCTP_PR_SCTP_MASK; \ 149 flags |= x; \ 150 } while (0) 151 152 #define SCTP_PR_TTL_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_TTL) 153 #define SCTP_PR_RTX_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_RTX) 154 #define SCTP_PR_PRIO_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_PRIO) 155 156 /* For enable stream reset */ 157 #define SCTP_ENABLE_RESET_STREAM_REQ 0x01 158 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x02 159 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x04 160 #define SCTP_ENABLE_STRRESET_MASK 0x07 161 162 #define SCTP_STREAM_RESET_INCOMING 0x01 163 #define SCTP_STREAM_RESET_OUTGOING 0x02 164 165 /* These are bit fields for msghdr->msg_flags. See section 5.1. */ 166 /* On user space Linux, these live in <bits/socket.h> as an enum. */ 167 enum sctp_msg_flags { 168 MSG_NOTIFICATION = 0x8000, 169 #define MSG_NOTIFICATION MSG_NOTIFICATION 170 }; 171 172 /* 5.3.1 SCTP Initiation Structure (SCTP_INIT) 173 * 174 * This cmsghdr structure provides information for initializing new 175 * SCTP associations with sendmsg(). The SCTP_INITMSG socket option 176 * uses this same data structure. This structure is not used for 177 * recvmsg(). 178 * 179 * cmsg_level cmsg_type cmsg_data[] 180 * ------------ ------------ ---------------------- 181 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg 182 */ 183 struct sctp_initmsg { 184 __u16 sinit_num_ostreams; 185 __u16 sinit_max_instreams; 186 __u16 sinit_max_attempts; 187 __u16 sinit_max_init_timeo; 188 }; 189 190 /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV) 191 * 192 * This cmsghdr structure specifies SCTP options for sendmsg() and 193 * describes SCTP header information about a received message through 194 * recvmsg(). 195 * 196 * cmsg_level cmsg_type cmsg_data[] 197 * ------------ ------------ ---------------------- 198 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo 199 */ 200 struct sctp_sndrcvinfo { 201 __u16 sinfo_stream; 202 __u16 sinfo_ssn; 203 __u16 sinfo_flags; 204 __u32 sinfo_ppid; 205 __u32 sinfo_context; 206 __u32 sinfo_timetolive; 207 __u32 sinfo_tsn; 208 __u32 sinfo_cumtsn; 209 sctp_assoc_t sinfo_assoc_id; 210 }; 211 212 /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO) 213 * 214 * This cmsghdr structure specifies SCTP options for sendmsg(). 215 * 216 * cmsg_level cmsg_type cmsg_data[] 217 * ------------ ------------ ------------------- 218 * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo 219 */ 220 struct sctp_sndinfo { 221 __u16 snd_sid; 222 __u16 snd_flags; 223 __u32 snd_ppid; 224 __u32 snd_context; 225 sctp_assoc_t snd_assoc_id; 226 }; 227 228 /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO) 229 * 230 * This cmsghdr structure describes SCTP receive information 231 * about a received message through recvmsg(). 232 * 233 * cmsg_level cmsg_type cmsg_data[] 234 * ------------ ------------ ------------------- 235 * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo 236 */ 237 struct sctp_rcvinfo { 238 __u16 rcv_sid; 239 __u16 rcv_ssn; 240 __u16 rcv_flags; 241 __u32 rcv_ppid; 242 __u32 rcv_tsn; 243 __u32 rcv_cumtsn; 244 __u32 rcv_context; 245 sctp_assoc_t rcv_assoc_id; 246 }; 247 248 /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO) 249 * 250 * This cmsghdr structure describes SCTP receive information 251 * of the next message that will be delivered through recvmsg() 252 * if this information is already available when delivering 253 * the current message. 254 * 255 * cmsg_level cmsg_type cmsg_data[] 256 * ------------ ------------ ------------------- 257 * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo 258 */ 259 struct sctp_nxtinfo { 260 __u16 nxt_sid; 261 __u16 nxt_flags; 262 __u32 nxt_ppid; 263 __u32 nxt_length; 264 sctp_assoc_t nxt_assoc_id; 265 }; 266 267 /* 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO) 268 * 269 * This cmsghdr structure specifies SCTP options for sendmsg(). 270 * 271 * cmsg_level cmsg_type cmsg_data[] 272 * ------------ ------------ ------------------- 273 * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo 274 */ 275 struct sctp_prinfo { 276 __u16 pr_policy; 277 __u32 pr_value; 278 }; 279 280 /* 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO) 281 * 282 * This cmsghdr structure specifies SCTP options for sendmsg(). 283 * 284 * cmsg_level cmsg_type cmsg_data[] 285 * ------------ ------------ ------------------- 286 * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo 287 */ 288 struct sctp_authinfo { 289 __u16 auth_keynumber; 290 }; 291 292 /* 293 * sinfo_flags: 16 bits (unsigned integer) 294 * 295 * This field may contain any of the following flags and is composed of 296 * a bitwise OR of these values. 297 */ 298 enum sctp_sinfo_flags { 299 SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */ 300 SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */ 301 SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */ 302 SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */ 303 /* 2 bits here have been used by SCTP_PR_SCTP_MASK */ 304 SCTP_SENDALL = (1 << 6), 305 SCTP_PR_SCTP_ALL = (1 << 7), 306 SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */ 307 SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */ 308 }; 309 310 typedef union { 311 __u8 raw; 312 struct sctp_initmsg init; 313 struct sctp_sndrcvinfo sndrcv; 314 } sctp_cmsg_data_t; 315 316 /* These are cmsg_types. */ 317 typedef enum sctp_cmsg_type { 318 SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ 319 #define SCTP_INIT SCTP_INIT 320 SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ 321 #define SCTP_SNDRCV SCTP_SNDRCV 322 SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */ 323 #define SCTP_SNDINFO SCTP_SNDINFO 324 SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */ 325 #define SCTP_RCVINFO SCTP_RCVINFO 326 SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */ 327 #define SCTP_NXTINFO SCTP_NXTINFO 328 SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */ 329 #define SCTP_PRINFO SCTP_PRINFO 330 SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure */ 331 #define SCTP_AUTHINFO SCTP_AUTHINFO 332 SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */ 333 #define SCTP_DSTADDRV4 SCTP_DSTADDRV4 334 SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */ 335 #define SCTP_DSTADDRV6 SCTP_DSTADDRV6 336 } sctp_cmsg_t; 337 338 /* 339 * 5.3.1.1 SCTP_ASSOC_CHANGE 340 * 341 * Communication notifications inform the ULP that an SCTP association 342 * has either begun or ended. The identifier for a new association is 343 * provided by this notificaion. The notification information has the 344 * following format: 345 * 346 */ 347 struct sctp_assoc_change { 348 __u16 sac_type; 349 __u16 sac_flags; 350 __u32 sac_length; 351 __u16 sac_state; 352 __u16 sac_error; 353 __u16 sac_outbound_streams; 354 __u16 sac_inbound_streams; 355 sctp_assoc_t sac_assoc_id; 356 __u8 sac_info[0]; 357 }; 358 359 /* 360 * sac_state: 32 bits (signed integer) 361 * 362 * This field holds one of a number of values that communicate the 363 * event that happened to the association. They include: 364 * 365 * Note: The following state names deviate from the API draft as 366 * the names clash too easily with other kernel symbols. 367 */ 368 enum sctp_sac_state { 369 SCTP_COMM_UP, 370 SCTP_COMM_LOST, 371 SCTP_RESTART, 372 SCTP_SHUTDOWN_COMP, 373 SCTP_CANT_STR_ASSOC, 374 }; 375 376 /* 377 * 5.3.1.2 SCTP_PEER_ADDR_CHANGE 378 * 379 * When a destination address on a multi-homed peer encounters a change 380 * an interface details event is sent. The information has the 381 * following structure: 382 */ 383 struct sctp_paddr_change { 384 __u16 spc_type; 385 __u16 spc_flags; 386 __u32 spc_length; 387 struct sockaddr_storage spc_aaddr; 388 int spc_state; 389 int spc_error; 390 sctp_assoc_t spc_assoc_id; 391 } __attribute__((packed, aligned(4))); 392 393 /* 394 * spc_state: 32 bits (signed integer) 395 * 396 * This field holds one of a number of values that communicate the 397 * event that happened to the address. They include: 398 */ 399 enum sctp_spc_state { 400 SCTP_ADDR_AVAILABLE, 401 SCTP_ADDR_UNREACHABLE, 402 SCTP_ADDR_REMOVED, 403 SCTP_ADDR_ADDED, 404 SCTP_ADDR_MADE_PRIM, 405 SCTP_ADDR_CONFIRMED, 406 }; 407 408 409 /* 410 * 5.3.1.3 SCTP_REMOTE_ERROR 411 * 412 * A remote peer may send an Operational Error message to its peer. 413 * This message indicates a variety of error conditions on an 414 * association. The entire error TLV as it appears on the wire is 415 * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP 416 * specification [SCTP] and any extensions for a list of possible 417 * error formats. SCTP error TLVs have the format: 418 */ 419 struct sctp_remote_error { 420 __u16 sre_type; 421 __u16 sre_flags; 422 __u32 sre_length; 423 __be16 sre_error; 424 sctp_assoc_t sre_assoc_id; 425 __u8 sre_data[0]; 426 }; 427 428 429 /* 430 * 5.3.1.4 SCTP_SEND_FAILED 431 * 432 * If SCTP cannot deliver a message it may return the message as a 433 * notification. 434 */ 435 struct sctp_send_failed { 436 __u16 ssf_type; 437 __u16 ssf_flags; 438 __u32 ssf_length; 439 __u32 ssf_error; 440 struct sctp_sndrcvinfo ssf_info; 441 sctp_assoc_t ssf_assoc_id; 442 __u8 ssf_data[0]; 443 }; 444 445 /* 446 * ssf_flags: 16 bits (unsigned integer) 447 * 448 * The flag value will take one of the following values 449 * 450 * SCTP_DATA_UNSENT - Indicates that the data was never put on 451 * the wire. 452 * 453 * SCTP_DATA_SENT - Indicates that the data was put on the wire. 454 * Note that this does not necessarily mean that the 455 * data was (or was not) successfully delivered. 456 */ 457 enum sctp_ssf_flags { 458 SCTP_DATA_UNSENT, 459 SCTP_DATA_SENT, 460 }; 461 462 /* 463 * 5.3.1.5 SCTP_SHUTDOWN_EVENT 464 * 465 * When a peer sends a SHUTDOWN, SCTP delivers this notification to 466 * inform the application that it should cease sending data. 467 */ 468 struct sctp_shutdown_event { 469 __u16 sse_type; 470 __u16 sse_flags; 471 __u32 sse_length; 472 sctp_assoc_t sse_assoc_id; 473 }; 474 475 /* 476 * 5.3.1.6 SCTP_ADAPTATION_INDICATION 477 * 478 * When a peer sends a Adaptation Layer Indication parameter , SCTP 479 * delivers this notification to inform the application 480 * that of the peers requested adaptation layer. 481 */ 482 struct sctp_adaptation_event { 483 __u16 sai_type; 484 __u16 sai_flags; 485 __u32 sai_length; 486 __u32 sai_adaptation_ind; 487 sctp_assoc_t sai_assoc_id; 488 }; 489 490 /* 491 * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT 492 * 493 * When a receiver is engaged in a partial delivery of a 494 * message this notification will be used to indicate 495 * various events. 496 */ 497 struct sctp_pdapi_event { 498 __u16 pdapi_type; 499 __u16 pdapi_flags; 500 __u32 pdapi_length; 501 __u32 pdapi_indication; 502 sctp_assoc_t pdapi_assoc_id; 503 __u32 pdapi_stream; 504 __u32 pdapi_seq; 505 }; 506 507 enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; 508 509 /* 510 * 5.3.1.8. SCTP_AUTHENTICATION_EVENT 511 * 512 * When a receiver is using authentication this message will provide 513 * notifications regarding new keys being made active as well as errors. 514 */ 515 struct sctp_authkey_event { 516 __u16 auth_type; 517 __u16 auth_flags; 518 __u32 auth_length; 519 __u16 auth_keynumber; 520 __u16 auth_altkeynumber; 521 __u32 auth_indication; 522 sctp_assoc_t auth_assoc_id; 523 }; 524 525 enum { 526 SCTP_AUTH_NEW_KEY, 527 #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY /* compatible with before */ 528 SCTP_AUTH_FREE_KEY, 529 SCTP_AUTH_NO_AUTH, 530 }; 531 532 /* 533 * 6.1.9. SCTP_SENDER_DRY_EVENT 534 * 535 * When the SCTP stack has no more user data to send or retransmit, this 536 * notification is given to the user. Also, at the time when a user app 537 * subscribes to this event, if there is no data to be sent or 538 * retransmit, the stack will immediately send up this notification. 539 */ 540 struct sctp_sender_dry_event { 541 __u16 sender_dry_type; 542 __u16 sender_dry_flags; 543 __u32 sender_dry_length; 544 sctp_assoc_t sender_dry_assoc_id; 545 }; 546 547 #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 548 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 549 #define SCTP_STREAM_RESET_DENIED 0x0004 550 #define SCTP_STREAM_RESET_FAILED 0x0008 551 struct sctp_stream_reset_event { 552 __u16 strreset_type; 553 __u16 strreset_flags; 554 __u32 strreset_length; 555 sctp_assoc_t strreset_assoc_id; 556 __u16 strreset_stream_list[]; 557 }; 558 559 #define SCTP_ASSOC_RESET_DENIED 0x0004 560 #define SCTP_ASSOC_RESET_FAILED 0x0008 561 struct sctp_assoc_reset_event { 562 __u16 assocreset_type; 563 __u16 assocreset_flags; 564 __u32 assocreset_length; 565 sctp_assoc_t assocreset_assoc_id; 566 __u32 assocreset_local_tsn; 567 __u32 assocreset_remote_tsn; 568 }; 569 570 #define SCTP_ASSOC_CHANGE_DENIED 0x0004 571 #define SCTP_ASSOC_CHANGE_FAILED 0x0008 572 #define SCTP_STREAM_CHANGE_DENIED SCTP_ASSOC_CHANGE_DENIED 573 #define SCTP_STREAM_CHANGE_FAILED SCTP_ASSOC_CHANGE_FAILED 574 struct sctp_stream_change_event { 575 __u16 strchange_type; 576 __u16 strchange_flags; 577 __u32 strchange_length; 578 sctp_assoc_t strchange_assoc_id; 579 __u16 strchange_instrms; 580 __u16 strchange_outstrms; 581 }; 582 583 /* 584 * Described in Section 7.3 585 * Ancillary Data and Notification Interest Options 586 */ 587 struct sctp_event_subscribe { 588 __u8 sctp_data_io_event; 589 __u8 sctp_association_event; 590 __u8 sctp_address_event; 591 __u8 sctp_send_failure_event; 592 __u8 sctp_peer_error_event; 593 __u8 sctp_shutdown_event; 594 __u8 sctp_partial_delivery_event; 595 __u8 sctp_adaptation_layer_event; 596 __u8 sctp_authentication_event; 597 __u8 sctp_sender_dry_event; 598 __u8 sctp_stream_reset_event; 599 __u8 sctp_assoc_reset_event; 600 __u8 sctp_stream_change_event; 601 }; 602 603 /* 604 * 5.3.1 SCTP Notification Structure 605 * 606 * The notification structure is defined as the union of all 607 * notification types. 608 * 609 */ 610 union sctp_notification { 611 struct { 612 __u16 sn_type; /* Notification type. */ 613 __u16 sn_flags; 614 __u32 sn_length; 615 } sn_header; 616 struct sctp_assoc_change sn_assoc_change; 617 struct sctp_paddr_change sn_paddr_change; 618 struct sctp_remote_error sn_remote_error; 619 struct sctp_send_failed sn_send_failed; 620 struct sctp_shutdown_event sn_shutdown_event; 621 struct sctp_adaptation_event sn_adaptation_event; 622 struct sctp_pdapi_event sn_pdapi_event; 623 struct sctp_authkey_event sn_authkey_event; 624 struct sctp_sender_dry_event sn_sender_dry_event; 625 struct sctp_stream_reset_event sn_strreset_event; 626 struct sctp_assoc_reset_event sn_assocreset_event; 627 struct sctp_stream_change_event sn_strchange_event; 628 }; 629 630 /* Section 5.3.1 631 * All standard values for sn_type flags are greater than 2^15. 632 * Values from 2^15 and down are reserved. 633 */ 634 635 enum sctp_sn_type { 636 SCTP_SN_TYPE_BASE = (1<<15), 637 SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE, 638 #define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT 639 SCTP_ASSOC_CHANGE, 640 #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE 641 SCTP_PEER_ADDR_CHANGE, 642 #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE 643 SCTP_SEND_FAILED, 644 #define SCTP_SEND_FAILED SCTP_SEND_FAILED 645 SCTP_REMOTE_ERROR, 646 #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR 647 SCTP_SHUTDOWN_EVENT, 648 #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT 649 SCTP_PARTIAL_DELIVERY_EVENT, 650 #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT 651 SCTP_ADAPTATION_INDICATION, 652 #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION 653 SCTP_AUTHENTICATION_EVENT, 654 #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT 655 SCTP_SENDER_DRY_EVENT, 656 #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT 657 SCTP_STREAM_RESET_EVENT, 658 #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT 659 SCTP_ASSOC_RESET_EVENT, 660 #define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT 661 SCTP_STREAM_CHANGE_EVENT, 662 #define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT 663 SCTP_SN_TYPE_MAX = SCTP_STREAM_CHANGE_EVENT, 664 #define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX 665 }; 666 667 /* Notification error codes used to fill up the error fields in some 668 * notifications. 669 * SCTP_PEER_ADDRESS_CHAGE : spc_error 670 * SCTP_ASSOC_CHANGE : sac_error 671 * These names should be potentially included in the draft 04 of the SCTP 672 * sockets API specification. 673 */ 674 typedef enum sctp_sn_error { 675 SCTP_FAILED_THRESHOLD, 676 SCTP_RECEIVED_SACK, 677 SCTP_HEARTBEAT_SUCCESS, 678 SCTP_RESPONSE_TO_USER_REQ, 679 SCTP_INTERNAL_ERROR, 680 SCTP_SHUTDOWN_GUARD_EXPIRES, 681 SCTP_PEER_FAULTY, 682 } sctp_sn_error_t; 683 684 /* 685 * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) 686 * 687 * The protocol parameters used to initialize and bound retransmission 688 * timeout (RTO) are tunable. See [SCTP] for more information on how 689 * these parameters are used in RTO calculation. 690 */ 691 struct sctp_rtoinfo { 692 sctp_assoc_t srto_assoc_id; 693 __u32 srto_initial; 694 __u32 srto_max; 695 __u32 srto_min; 696 }; 697 698 /* 699 * 7.1.2 Association Parameters (SCTP_ASSOCINFO) 700 * 701 * This option is used to both examine and set various association and 702 * endpoint parameters. 703 */ 704 struct sctp_assocparams { 705 sctp_assoc_t sasoc_assoc_id; 706 __u16 sasoc_asocmaxrxt; 707 __u16 sasoc_number_peer_destinations; 708 __u32 sasoc_peer_rwnd; 709 __u32 sasoc_local_rwnd; 710 __u32 sasoc_cookie_life; 711 }; 712 713 /* 714 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) 715 * 716 * Requests that the peer mark the enclosed address as the association 717 * primary. The enclosed address must be one of the association's 718 * locally bound addresses. The following structure is used to make a 719 * set primary request: 720 */ 721 struct sctp_setpeerprim { 722 sctp_assoc_t sspp_assoc_id; 723 struct sockaddr_storage sspp_addr; 724 } __attribute__((packed, aligned(4))); 725 726 /* 727 * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) 728 * 729 * Requests that the local SCTP stack use the enclosed peer address as 730 * the association primary. The enclosed address must be one of the 731 * association peer's addresses. The following structure is used to 732 * make a set peer primary request: 733 */ 734 struct sctp_prim { 735 sctp_assoc_t ssp_assoc_id; 736 struct sockaddr_storage ssp_addr; 737 } __attribute__((packed, aligned(4))); 738 739 /* For backward compatibility use, define the old name too */ 740 #define sctp_setprim sctp_prim 741 742 /* 743 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER) 744 * 745 * Requests that the local endpoint set the specified Adaptation Layer 746 * Indication parameter for all future INIT and INIT-ACK exchanges. 747 */ 748 struct sctp_setadaptation { 749 __u32 ssb_adaptation_ind; 750 }; 751 752 /* 753 * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) 754 * 755 * Applications can enable or disable heartbeats for any peer address 756 * of an association, modify an address's heartbeat interval, force a 757 * heartbeat to be sent immediately, and adjust the address's maximum 758 * number of retransmissions sent before an address is considered 759 * unreachable. The following structure is used to access and modify an 760 * address's parameters: 761 */ 762 enum sctp_spp_flags { 763 SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/ 764 SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/ 765 SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE, 766 SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/ 767 SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/ 768 SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ 769 SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE, 770 SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/ 771 SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/ 772 SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE, 773 SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */ 774 SPP_IPV6_FLOWLABEL = 1<<8, 775 SPP_DSCP = 1<<9, 776 }; 777 778 struct sctp_paddrparams { 779 sctp_assoc_t spp_assoc_id; 780 struct sockaddr_storage spp_address; 781 __u32 spp_hbinterval; 782 __u16 spp_pathmaxrxt; 783 __u32 spp_pathmtu; 784 __u32 spp_sackdelay; 785 __u32 spp_flags; 786 __u32 spp_ipv6_flowlabel; 787 __u8 spp_dscp; 788 } __attribute__((packed, aligned(4))); 789 790 /* 791 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK) 792 * 793 * This set option adds a chunk type that the user is requesting to be 794 * received only in an authenticated way. Changes to the list of chunks 795 * will only effect future associations on the socket. 796 */ 797 struct sctp_authchunk { 798 __u8 sauth_chunk; 799 }; 800 801 /* 802 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT) 803 * 804 * This option gets or sets the list of HMAC algorithms that the local 805 * endpoint requires the peer to use. 806 */ 807 #ifndef __KERNEL__ 808 /* This here is only used by user space as is. It might not be a good idea 809 * to export/reveal the whole structure with reserved fields etc. 810 */ 811 enum { 812 SCTP_AUTH_HMAC_ID_SHA1 = 1, 813 SCTP_AUTH_HMAC_ID_SHA256 = 3, 814 }; 815 #endif 816 817 struct sctp_hmacalgo { 818 __u32 shmac_num_idents; 819 __u16 shmac_idents[]; 820 }; 821 822 /* Sadly, user and kernel space have different names for 823 * this structure member, so this is to not break anything. 824 */ 825 #define shmac_number_of_idents shmac_num_idents 826 827 /* 828 * 7.1.20. Set a shared key (SCTP_AUTH_KEY) 829 * 830 * This option will set a shared secret key which is used to build an 831 * association shared key. 832 */ 833 struct sctp_authkey { 834 sctp_assoc_t sca_assoc_id; 835 __u16 sca_keynumber; 836 __u16 sca_keylength; 837 __u8 sca_key[]; 838 }; 839 840 /* 841 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY) 842 * 843 * This option will get or set the active shared key to be used to build 844 * the association shared key. 845 */ 846 847 struct sctp_authkeyid { 848 sctp_assoc_t scact_assoc_id; 849 __u16 scact_keynumber; 850 }; 851 852 853 /* 854 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK) 855 * 856 * This option will effect the way delayed acks are performed. This 857 * option allows you to get or set the delayed ack time, in 858 * milliseconds. It also allows changing the delayed ack frequency. 859 * Changing the frequency to 1 disables the delayed sack algorithm. If 860 * the assoc_id is 0, then this sets or gets the endpoints default 861 * values. If the assoc_id field is non-zero, then the set or get 862 * effects the specified association for the one to many model (the 863 * assoc_id field is ignored by the one to one model). Note that if 864 * sack_delay or sack_freq are 0 when setting this option, then the 865 * current values will remain unchanged. 866 */ 867 struct sctp_sack_info { 868 sctp_assoc_t sack_assoc_id; 869 uint32_t sack_delay; 870 uint32_t sack_freq; 871 }; 872 873 struct sctp_assoc_value { 874 sctp_assoc_t assoc_id; 875 uint32_t assoc_value; 876 }; 877 878 struct sctp_stream_value { 879 sctp_assoc_t assoc_id; 880 uint16_t stream_id; 881 uint16_t stream_value; 882 }; 883 884 /* 885 * 7.2.2 Peer Address Information 886 * 887 * Applications can retrieve information about a specific peer address 888 * of an association, including its reachability state, congestion 889 * window, and retransmission timer values. This information is 890 * read-only. The following structure is used to access this 891 * information: 892 */ 893 struct sctp_paddrinfo { 894 sctp_assoc_t spinfo_assoc_id; 895 struct sockaddr_storage spinfo_address; 896 __s32 spinfo_state; 897 __u32 spinfo_cwnd; 898 __u32 spinfo_srtt; 899 __u32 spinfo_rto; 900 __u32 spinfo_mtu; 901 } __attribute__((packed, aligned(4))); 902 903 /* Peer addresses's state. */ 904 /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x] 905 * calls. 906 * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters. 907 * Not yet confirmed by a heartbeat and not available for data 908 * transfers. 909 * ACTIVE : Peer address confirmed, active and available for data transfers. 910 * INACTIVE: Peer address inactive and not available for data transfers. 911 */ 912 enum sctp_spinfo_state { 913 SCTP_INACTIVE, 914 SCTP_PF, 915 SCTP_ACTIVE, 916 SCTP_UNCONFIRMED, 917 SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */ 918 }; 919 920 /* 921 * 7.2.1 Association Status (SCTP_STATUS) 922 * 923 * Applications can retrieve current status information about an 924 * association, including association state, peer receiver window size, 925 * number of unacked data chunks, and number of data chunks pending 926 * receipt. This information is read-only. The following structure is 927 * used to access this information: 928 */ 929 struct sctp_status { 930 sctp_assoc_t sstat_assoc_id; 931 __s32 sstat_state; 932 __u32 sstat_rwnd; 933 __u16 sstat_unackdata; 934 __u16 sstat_penddata; 935 __u16 sstat_instrms; 936 __u16 sstat_outstrms; 937 __u32 sstat_fragmentation_point; 938 struct sctp_paddrinfo sstat_primary; 939 }; 940 941 /* 942 * 7.2.3. Get the list of chunks the peer requires to be authenticated 943 * (SCTP_PEER_AUTH_CHUNKS) 944 * 945 * This option gets a list of chunks for a specified association that 946 * the peer requires to be received authenticated only. 947 */ 948 struct sctp_authchunks { 949 sctp_assoc_t gauth_assoc_id; 950 __u32 gauth_number_of_chunks; 951 uint8_t gauth_chunks[]; 952 }; 953 954 /* The broken spelling has been released already in lksctp-tools header, 955 * so don't break anyone, now that it's fixed. 956 */ 957 #define guth_number_of_chunks gauth_number_of_chunks 958 959 /* Association states. */ 960 enum sctp_sstat_state { 961 SCTP_EMPTY = 0, 962 SCTP_CLOSED = 1, 963 SCTP_COOKIE_WAIT = 2, 964 SCTP_COOKIE_ECHOED = 3, 965 SCTP_ESTABLISHED = 4, 966 SCTP_SHUTDOWN_PENDING = 5, 967 SCTP_SHUTDOWN_SENT = 6, 968 SCTP_SHUTDOWN_RECEIVED = 7, 969 SCTP_SHUTDOWN_ACK_SENT = 8, 970 }; 971 972 /* 973 * 8.2.6. Get the Current Identifiers of Associations 974 * (SCTP_GET_ASSOC_ID_LIST) 975 * 976 * This option gets the current list of SCTP association identifiers of 977 * the SCTP associations handled by a one-to-many style socket. 978 */ 979 struct sctp_assoc_ids { 980 __u32 gaids_number_of_ids; 981 sctp_assoc_t gaids_assoc_id[]; 982 }; 983 984 /* 985 * 8.3, 8.5 get all peer/local addresses in an association. 986 * This parameter struct is used by SCTP_GET_PEER_ADDRS and 987 * SCTP_GET_LOCAL_ADDRS socket options used internally to implement 988 * sctp_getpaddrs() and sctp_getladdrs() API. 989 */ 990 struct sctp_getaddrs_old { 991 sctp_assoc_t assoc_id; 992 int addr_num; 993 #ifdef __KERNEL__ 994 struct sockaddr __user *addrs; 995 #else 996 struct sockaddr *addrs; 997 #endif 998 }; 999 1000 struct sctp_getaddrs { 1001 sctp_assoc_t assoc_id; /*input*/ 1002 __u32 addr_num; /*output*/ 1003 __u8 addrs[0]; /*output, variable size*/ 1004 }; 1005 1006 /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves 1007 * association stats. All stats are counts except sas_maxrto and 1008 * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since 1009 * the last call. Will return 0 when RTO was not update since last call 1010 */ 1011 struct sctp_assoc_stats { 1012 sctp_assoc_t sas_assoc_id; /* Input */ 1013 /* Transport of observed max RTO */ 1014 struct sockaddr_storage sas_obs_rto_ipaddr; 1015 __u64 sas_maxrto; /* Maximum Observed RTO for period */ 1016 __u64 sas_isacks; /* SACKs received */ 1017 __u64 sas_osacks; /* SACKs sent */ 1018 __u64 sas_opackets; /* Packets sent */ 1019 __u64 sas_ipackets; /* Packets received */ 1020 __u64 sas_rtxchunks; /* Retransmitted Chunks */ 1021 __u64 sas_outofseqtsns;/* TSN received > next expected */ 1022 __u64 sas_idupchunks; /* Dups received (ordered+unordered) */ 1023 __u64 sas_gapcnt; /* Gap Acknowledgements Received */ 1024 __u64 sas_ouodchunks; /* Unordered data chunks sent */ 1025 __u64 sas_iuodchunks; /* Unordered data chunks received */ 1026 __u64 sas_oodchunks; /* Ordered data chunks sent */ 1027 __u64 sas_iodchunks; /* Ordered data chunks received */ 1028 __u64 sas_octrlchunks; /* Control chunks sent */ 1029 __u64 sas_ictrlchunks; /* Control chunks received */ 1030 }; 1031 1032 /* 1033 * 8.1 sctp_bindx() 1034 * 1035 * The flags parameter is formed from the bitwise OR of zero or more of the 1036 * following currently defined flags: 1037 */ 1038 #define SCTP_BINDX_ADD_ADDR 0x01 1039 #define SCTP_BINDX_REM_ADDR 0x02 1040 1041 /* This is the structure that is passed as an argument(optval) to 1042 * getsockopt(SCTP_SOCKOPT_PEELOFF). 1043 */ 1044 typedef struct { 1045 sctp_assoc_t associd; 1046 int sd; 1047 } sctp_peeloff_arg_t; 1048 1049 typedef struct { 1050 sctp_peeloff_arg_t p_arg; 1051 unsigned flags; 1052 } sctp_peeloff_flags_arg_t; 1053 1054 /* 1055 * Peer Address Thresholds socket option 1056 */ 1057 struct sctp_paddrthlds { 1058 sctp_assoc_t spt_assoc_id; 1059 struct sockaddr_storage spt_address; 1060 __u16 spt_pathmaxrxt; 1061 __u16 spt_pathpfthld; 1062 }; 1063 1064 /* 1065 * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status 1066 */ 1067 struct sctp_prstatus { 1068 sctp_assoc_t sprstat_assoc_id; 1069 __u16 sprstat_sid; 1070 __u16 sprstat_policy; 1071 __u64 sprstat_abandoned_unsent; 1072 __u64 sprstat_abandoned_sent; 1073 }; 1074 1075 struct sctp_default_prinfo { 1076 sctp_assoc_t pr_assoc_id; 1077 __u32 pr_value; 1078 __u16 pr_policy; 1079 }; 1080 1081 struct sctp_info { 1082 __u32 sctpi_tag; 1083 __u32 sctpi_state; 1084 __u32 sctpi_rwnd; 1085 __u16 sctpi_unackdata; 1086 __u16 sctpi_penddata; 1087 __u16 sctpi_instrms; 1088 __u16 sctpi_outstrms; 1089 __u32 sctpi_fragmentation_point; 1090 __u32 sctpi_inqueue; 1091 __u32 sctpi_outqueue; 1092 __u32 sctpi_overall_error; 1093 __u32 sctpi_max_burst; 1094 __u32 sctpi_maxseg; 1095 __u32 sctpi_peer_rwnd; 1096 __u32 sctpi_peer_tag; 1097 __u8 sctpi_peer_capable; 1098 __u8 sctpi_peer_sack; 1099 __u16 __reserved1; 1100 1101 /* assoc status info */ 1102 __u64 sctpi_isacks; 1103 __u64 sctpi_osacks; 1104 __u64 sctpi_opackets; 1105 __u64 sctpi_ipackets; 1106 __u64 sctpi_rtxchunks; 1107 __u64 sctpi_outofseqtsns; 1108 __u64 sctpi_idupchunks; 1109 __u64 sctpi_gapcnt; 1110 __u64 sctpi_ouodchunks; 1111 __u64 sctpi_iuodchunks; 1112 __u64 sctpi_oodchunks; 1113 __u64 sctpi_iodchunks; 1114 __u64 sctpi_octrlchunks; 1115 __u64 sctpi_ictrlchunks; 1116 1117 /* primary transport info */ 1118 struct sockaddr_storage sctpi_p_address; 1119 __s32 sctpi_p_state; 1120 __u32 sctpi_p_cwnd; 1121 __u32 sctpi_p_srtt; 1122 __u32 sctpi_p_rto; 1123 __u32 sctpi_p_hbinterval; 1124 __u32 sctpi_p_pathmaxrxt; 1125 __u32 sctpi_p_sackdelay; 1126 __u32 sctpi_p_sackfreq; 1127 __u32 sctpi_p_ssthresh; 1128 __u32 sctpi_p_partial_bytes_acked; 1129 __u32 sctpi_p_flight_size; 1130 __u16 sctpi_p_error; 1131 __u16 __reserved2; 1132 1133 /* sctp sock info */ 1134 __u32 sctpi_s_autoclose; 1135 __u32 sctpi_s_adaptation_ind; 1136 __u32 sctpi_s_pd_point; 1137 __u8 sctpi_s_nodelay; 1138 __u8 sctpi_s_disable_fragments; 1139 __u8 sctpi_s_v4mapped; 1140 __u8 sctpi_s_frag_interleave; 1141 __u32 sctpi_s_type; 1142 __u32 __reserved3; 1143 }; 1144 1145 struct sctp_reset_streams { 1146 sctp_assoc_t srs_assoc_id; 1147 uint16_t srs_flags; 1148 uint16_t srs_number_streams; /* 0 == ALL */ 1149 uint16_t srs_stream_list[]; /* list if srs_num_streams is not 0 */ 1150 }; 1151 1152 struct sctp_add_streams { 1153 sctp_assoc_t sas_assoc_id; 1154 uint16_t sas_instrms; 1155 uint16_t sas_outstrms; 1156 }; 1157 1158 struct sctp_event { 1159 sctp_assoc_t se_assoc_id; 1160 uint16_t se_type; 1161 uint8_t se_on; 1162 }; 1163 1164 /* SCTP Stream schedulers */ 1165 enum sctp_sched_type { 1166 SCTP_SS_FCFS, 1167 SCTP_SS_DEFAULT = SCTP_SS_FCFS, 1168 SCTP_SS_PRIO, 1169 SCTP_SS_RR, 1170 SCTP_SS_MAX = SCTP_SS_RR 1171 }; 1172 1173 #endif /* _UAPI_SCTP_H */ 1174
