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ba914908 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
5dec02d7 PS |
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 _SCTP_H | |
55 | #define _SCTP_H | |
56 | ||
57 | #include <linux/types.h> | |
58 | #include <linux/socket.h> | |
59 | ||
60 | typedef __s32 sctp_assoc_t; | |
61 | ||
6b2d60bd DA |
62 | #define SCTP_FUTURE_ASSOC 0 |
63 | #define SCTP_CURRENT_ASSOC 1 | |
64 | #define SCTP_ALL_ASSOC 2 | |
65 | ||
5dec02d7 PS |
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 | |
9effc146 | 106 | #define SCTP_AUTH_DEACTIVATE_KEY 35 |
22ddbd82 | 107 | #define SCTP_REUSE_PORT 36 |
5dec02d7 PS |
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 | |
45f78b4d | 125 | #define SCTP_PR_STREAM_STATUS 116 |
2099b983 | 126 | #define SCTP_RECONFIG_SUPPORTED 117 |
a044b36a SH |
127 | #define SCTP_ENABLE_STREAM_RESET 118 |
128 | #define SCTP_RESET_STREAMS 119 | |
cad54934 SH |
129 | #define SCTP_RESET_ASSOC 120 |
130 | #define SCTP_ADD_STREAMS 121 | |
517771e2 | 131 | #define SCTP_SOCKOPT_PEELOFF_FLAGS 122 |
f53da99a SH |
132 | #define SCTP_STREAM_SCHEDULER 123 |
133 | #define SCTP_STREAM_SCHEDULER_VALUE 124 | |
f82517f8 | 134 | #define SCTP_INTERLEAVING_SUPPORTED 125 |
075bf62a | 135 | #define SCTP_SENDMSG_CONNECT 126 |
8d42678d | 136 | #define SCTP_EVENT 127 |
5dec02d7 PS |
137 | |
138 | /* PR-SCTP policies */ | |
139 | #define SCTP_PR_SCTP_NONE 0x0000 | |
140 | #define SCTP_PR_SCTP_TTL 0x0010 | |
141 | #define SCTP_PR_SCTP_RTX 0x0020 | |
142 | #define SCTP_PR_SCTP_PRIO 0x0030 | |
143 | #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_PRIO | |
144 | #define SCTP_PR_SCTP_MASK 0x0030 | |
145 | ||
146 | #define __SCTP_PR_INDEX(x) ((x >> 4) - 1) | |
147 | #define SCTP_PR_INDEX(x) __SCTP_PR_INDEX(SCTP_PR_SCTP_ ## x) | |
148 | ||
149 | #define SCTP_PR_POLICY(x) ((x) & SCTP_PR_SCTP_MASK) | |
150 | #define SCTP_PR_SET_POLICY(flags, x) \ | |
151 | do { \ | |
152 | flags &= ~SCTP_PR_SCTP_MASK; \ | |
153 | flags |= x; \ | |
154 | } while (0) | |
155 | ||
156 | #define SCTP_PR_TTL_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_TTL) | |
157 | #define SCTP_PR_RTX_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_RTX) | |
158 | #define SCTP_PR_PRIO_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_PRIO) | |
159 | ||
a044b36a SH |
160 | /* For enable stream reset */ |
161 | #define SCTP_ENABLE_RESET_STREAM_REQ 0x01 | |
162 | #define SCTP_ENABLE_RESET_ASSOC_REQ 0x02 | |
163 | #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x04 | |
164 | #define SCTP_ENABLE_STRRESET_MASK 0x07 | |
165 | ||
166 | #define SCTP_STREAM_RESET_INCOMING 0x01 | |
167 | #define SCTP_STREAM_RESET_OUTGOING 0x02 | |
168 | ||
5dec02d7 PS |
169 | /* These are bit fields for msghdr->msg_flags. See section 5.1. */ |
170 | /* On user space Linux, these live in <bits/socket.h> as an enum. */ | |
171 | enum sctp_msg_flags { | |
172 | MSG_NOTIFICATION = 0x8000, | |
173 | #define MSG_NOTIFICATION MSG_NOTIFICATION | |
174 | }; | |
175 | ||
176 | /* 5.3.1 SCTP Initiation Structure (SCTP_INIT) | |
177 | * | |
178 | * This cmsghdr structure provides information for initializing new | |
179 | * SCTP associations with sendmsg(). The SCTP_INITMSG socket option | |
180 | * uses this same data structure. This structure is not used for | |
181 | * recvmsg(). | |
182 | * | |
183 | * cmsg_level cmsg_type cmsg_data[] | |
184 | * ------------ ------------ ---------------------- | |
185 | * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg | |
186 | */ | |
187 | struct sctp_initmsg { | |
188 | __u16 sinit_num_ostreams; | |
189 | __u16 sinit_max_instreams; | |
190 | __u16 sinit_max_attempts; | |
191 | __u16 sinit_max_init_timeo; | |
192 | }; | |
193 | ||
194 | /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV) | |
195 | * | |
196 | * This cmsghdr structure specifies SCTP options for sendmsg() and | |
197 | * describes SCTP header information about a received message through | |
198 | * recvmsg(). | |
199 | * | |
200 | * cmsg_level cmsg_type cmsg_data[] | |
201 | * ------------ ------------ ---------------------- | |
202 | * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo | |
203 | */ | |
204 | struct sctp_sndrcvinfo { | |
205 | __u16 sinfo_stream; | |
206 | __u16 sinfo_ssn; | |
207 | __u16 sinfo_flags; | |
208 | __u32 sinfo_ppid; | |
209 | __u32 sinfo_context; | |
210 | __u32 sinfo_timetolive; | |
211 | __u32 sinfo_tsn; | |
212 | __u32 sinfo_cumtsn; | |
213 | sctp_assoc_t sinfo_assoc_id; | |
214 | }; | |
215 | ||
216 | /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO) | |
217 | * | |
218 | * This cmsghdr structure specifies SCTP options for sendmsg(). | |
219 | * | |
220 | * cmsg_level cmsg_type cmsg_data[] | |
221 | * ------------ ------------ ------------------- | |
222 | * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo | |
223 | */ | |
224 | struct sctp_sndinfo { | |
225 | __u16 snd_sid; | |
226 | __u16 snd_flags; | |
227 | __u32 snd_ppid; | |
228 | __u32 snd_context; | |
229 | sctp_assoc_t snd_assoc_id; | |
230 | }; | |
231 | ||
232 | /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO) | |
233 | * | |
234 | * This cmsghdr structure describes SCTP receive information | |
235 | * about a received message through recvmsg(). | |
236 | * | |
237 | * cmsg_level cmsg_type cmsg_data[] | |
238 | * ------------ ------------ ------------------- | |
239 | * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo | |
240 | */ | |
241 | struct sctp_rcvinfo { | |
242 | __u16 rcv_sid; | |
243 | __u16 rcv_ssn; | |
244 | __u16 rcv_flags; | |
245 | __u32 rcv_ppid; | |
246 | __u32 rcv_tsn; | |
247 | __u32 rcv_cumtsn; | |
248 | __u32 rcv_context; | |
249 | sctp_assoc_t rcv_assoc_id; | |
250 | }; | |
251 | ||
252 | /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO) | |
253 | * | |
254 | * This cmsghdr structure describes SCTP receive information | |
255 | * of the next message that will be delivered through recvmsg() | |
256 | * if this information is already available when delivering | |
257 | * the current message. | |
258 | * | |
259 | * cmsg_level cmsg_type cmsg_data[] | |
260 | * ------------ ------------ ------------------- | |
261 | * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo | |
262 | */ | |
263 | struct sctp_nxtinfo { | |
264 | __u16 nxt_sid; | |
265 | __u16 nxt_flags; | |
266 | __u32 nxt_ppid; | |
267 | __u32 nxt_length; | |
268 | sctp_assoc_t nxt_assoc_id; | |
269 | }; | |
270 | ||
8c278eca DA |
271 | /* 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO) |
272 | * | |
273 | * This cmsghdr structure specifies SCTP options for sendmsg(). | |
274 | * | |
275 | * cmsg_level cmsg_type cmsg_data[] | |
276 | * ------------ ------------ ------------------- | |
277 | * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo | |
278 | */ | |
279 | struct sctp_prinfo { | |
280 | __u16 pr_policy; | |
281 | __u32 pr_value; | |
282 | }; | |
283 | ||
9effc146 DA |
284 | /* 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO) |
285 | * | |
286 | * This cmsghdr structure specifies SCTP options for sendmsg(). | |
287 | * | |
288 | * cmsg_level cmsg_type cmsg_data[] | |
289 | * ------------ ------------ ------------------- | |
290 | * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo | |
291 | */ | |
292 | struct sctp_authinfo { | |
293 | __u16 auth_keynumber; | |
294 | }; | |
295 | ||
5dec02d7 PS |
296 | /* |
297 | * sinfo_flags: 16 bits (unsigned integer) | |
298 | * | |
299 | * This field may contain any of the following flags and is composed of | |
300 | * a bitwise OR of these values. | |
301 | */ | |
302 | enum sctp_sinfo_flags { | |
303 | SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */ | |
304 | SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */ | |
305 | SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */ | |
306 | SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */ | |
8c278eca DA |
307 | /* 2 bits here have been used by SCTP_PR_SCTP_MASK */ |
308 | SCTP_SENDALL = (1 << 6), | |
39776a86 | 309 | SCTP_PR_SCTP_ALL = (1 << 7), |
5dec02d7 PS |
310 | SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */ |
311 | SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */ | |
312 | }; | |
313 | ||
314 | typedef union { | |
315 | __u8 raw; | |
316 | struct sctp_initmsg init; | |
317 | struct sctp_sndrcvinfo sndrcv; | |
318 | } sctp_cmsg_data_t; | |
319 | ||
320 | /* These are cmsg_types. */ | |
321 | typedef enum sctp_cmsg_type { | |
322 | SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ | |
323 | #define SCTP_INIT SCTP_INIT | |
324 | SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ | |
325 | #define SCTP_SNDRCV SCTP_SNDRCV | |
326 | SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */ | |
327 | #define SCTP_SNDINFO SCTP_SNDINFO | |
328 | SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */ | |
329 | #define SCTP_RCVINFO SCTP_RCVINFO | |
330 | SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */ | |
331 | #define SCTP_NXTINFO SCTP_NXTINFO | |
8c278eca DA |
332 | SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */ |
333 | #define SCTP_PRINFO SCTP_PRINFO | |
9effc146 | 334 | SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure */ |
8c278eca DA |
335 | #define SCTP_AUTHINFO SCTP_AUTHINFO |
336 | SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */ | |
337 | #define SCTP_DSTADDRV4 SCTP_DSTADDRV4 | |
338 | SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */ | |
339 | #define SCTP_DSTADDRV6 SCTP_DSTADDRV6 | |
5dec02d7 PS |
340 | } sctp_cmsg_t; |
341 | ||
342 | /* | |
343 | * 5.3.1.1 SCTP_ASSOC_CHANGE | |
344 | * | |
345 | * Communication notifications inform the ULP that an SCTP association | |
346 | * has either begun or ended. The identifier for a new association is | |
347 | * provided by this notificaion. The notification information has the | |
348 | * following format: | |
349 | * | |
350 | */ | |
351 | struct sctp_assoc_change { | |
352 | __u16 sac_type; | |
353 | __u16 sac_flags; | |
354 | __u32 sac_length; | |
355 | __u16 sac_state; | |
356 | __u16 sac_error; | |
357 | __u16 sac_outbound_streams; | |
358 | __u16 sac_inbound_streams; | |
359 | sctp_assoc_t sac_assoc_id; | |
360 | __u8 sac_info[0]; | |
361 | }; | |
362 | ||
363 | /* | |
364 | * sac_state: 32 bits (signed integer) | |
365 | * | |
366 | * This field holds one of a number of values that communicate the | |
367 | * event that happened to the association. They include: | |
368 | * | |
369 | * Note: The following state names deviate from the API draft as | |
370 | * the names clash too easily with other kernel symbols. | |
371 | */ | |
372 | enum sctp_sac_state { | |
373 | SCTP_COMM_UP, | |
374 | SCTP_COMM_LOST, | |
375 | SCTP_RESTART, | |
376 | SCTP_SHUTDOWN_COMP, | |
377 | SCTP_CANT_STR_ASSOC, | |
378 | }; | |
379 | ||
380 | /* | |
381 | * 5.3.1.2 SCTP_PEER_ADDR_CHANGE | |
382 | * | |
383 | * When a destination address on a multi-homed peer encounters a change | |
384 | * an interface details event is sent. The information has the | |
385 | * following structure: | |
386 | */ | |
387 | struct sctp_paddr_change { | |
388 | __u16 spc_type; | |
389 | __u16 spc_flags; | |
390 | __u32 spc_length; | |
391 | struct sockaddr_storage spc_aaddr; | |
392 | int spc_state; | |
393 | int spc_error; | |
394 | sctp_assoc_t spc_assoc_id; | |
395 | } __attribute__((packed, aligned(4))); | |
396 | ||
397 | /* | |
398 | * spc_state: 32 bits (signed integer) | |
399 | * | |
400 | * This field holds one of a number of values that communicate the | |
401 | * event that happened to the address. They include: | |
402 | */ | |
403 | enum sctp_spc_state { | |
404 | SCTP_ADDR_AVAILABLE, | |
405 | SCTP_ADDR_UNREACHABLE, | |
406 | SCTP_ADDR_REMOVED, | |
407 | SCTP_ADDR_ADDED, | |
408 | SCTP_ADDR_MADE_PRIM, | |
409 | SCTP_ADDR_CONFIRMED, | |
410 | }; | |
411 | ||
412 | ||
413 | /* | |
414 | * 5.3.1.3 SCTP_REMOTE_ERROR | |
415 | * | |
416 | * A remote peer may send an Operational Error message to its peer. | |
417 | * This message indicates a variety of error conditions on an | |
418 | * association. The entire error TLV as it appears on the wire is | |
419 | * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP | |
420 | * specification [SCTP] and any extensions for a list of possible | |
421 | * error formats. SCTP error TLVs have the format: | |
422 | */ | |
423 | struct sctp_remote_error { | |
424 | __u16 sre_type; | |
425 | __u16 sre_flags; | |
426 | __u32 sre_length; | |
fe388b9e | 427 | __be16 sre_error; |
5dec02d7 PS |
428 | sctp_assoc_t sre_assoc_id; |
429 | __u8 sre_data[0]; | |
430 | }; | |
431 | ||
432 | ||
433 | /* | |
434 | * 5.3.1.4 SCTP_SEND_FAILED | |
435 | * | |
436 | * If SCTP cannot deliver a message it may return the message as a | |
437 | * notification. | |
438 | */ | |
439 | struct sctp_send_failed { | |
440 | __u16 ssf_type; | |
441 | __u16 ssf_flags; | |
442 | __u32 ssf_length; | |
443 | __u32 ssf_error; | |
444 | struct sctp_sndrcvinfo ssf_info; | |
445 | sctp_assoc_t ssf_assoc_id; | |
446 | __u8 ssf_data[0]; | |
447 | }; | |
448 | ||
449 | /* | |
450 | * ssf_flags: 16 bits (unsigned integer) | |
451 | * | |
452 | * The flag value will take one of the following values | |
453 | * | |
454 | * SCTP_DATA_UNSENT - Indicates that the data was never put on | |
455 | * the wire. | |
456 | * | |
457 | * SCTP_DATA_SENT - Indicates that the data was put on the wire. | |
458 | * Note that this does not necessarily mean that the | |
459 | * data was (or was not) successfully delivered. | |
460 | */ | |
461 | enum sctp_ssf_flags { | |
462 | SCTP_DATA_UNSENT, | |
463 | SCTP_DATA_SENT, | |
464 | }; | |
465 | ||
466 | /* | |
467 | * 5.3.1.5 SCTP_SHUTDOWN_EVENT | |
468 | * | |
469 | * When a peer sends a SHUTDOWN, SCTP delivers this notification to | |
470 | * inform the application that it should cease sending data. | |
471 | */ | |
472 | struct sctp_shutdown_event { | |
473 | __u16 sse_type; | |
474 | __u16 sse_flags; | |
475 | __u32 sse_length; | |
476 | sctp_assoc_t sse_assoc_id; | |
477 | }; | |
478 | ||
479 | /* | |
480 | * 5.3.1.6 SCTP_ADAPTATION_INDICATION | |
481 | * | |
482 | * When a peer sends a Adaptation Layer Indication parameter , SCTP | |
483 | * delivers this notification to inform the application | |
484 | * that of the peers requested adaptation layer. | |
485 | */ | |
486 | struct sctp_adaptation_event { | |
487 | __u16 sai_type; | |
488 | __u16 sai_flags; | |
489 | __u32 sai_length; | |
490 | __u32 sai_adaptation_ind; | |
491 | sctp_assoc_t sai_assoc_id; | |
492 | }; | |
493 | ||
494 | /* | |
495 | * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT | |
496 | * | |
497 | * When a receiver is engaged in a partial delivery of a | |
498 | * message this notification will be used to indicate | |
499 | * various events. | |
500 | */ | |
501 | struct sctp_pdapi_event { | |
502 | __u16 pdapi_type; | |
503 | __u16 pdapi_flags; | |
504 | __u32 pdapi_length; | |
505 | __u32 pdapi_indication; | |
506 | sctp_assoc_t pdapi_assoc_id; | |
f82517f8 DA |
507 | __u32 pdapi_stream; |
508 | __u32 pdapi_seq; | |
5dec02d7 PS |
509 | }; |
510 | ||
511 | enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; | |
512 | ||
513 | /* | |
514 | * 5.3.1.8. SCTP_AUTHENTICATION_EVENT | |
515 | * | |
516 | * When a receiver is using authentication this message will provide | |
517 | * notifications regarding new keys being made active as well as errors. | |
518 | */ | |
519 | struct sctp_authkey_event { | |
520 | __u16 auth_type; | |
521 | __u16 auth_flags; | |
522 | __u32 auth_length; | |
523 | __u16 auth_keynumber; | |
524 | __u16 auth_altkeynumber; | |
525 | __u32 auth_indication; | |
526 | sctp_assoc_t auth_assoc_id; | |
527 | }; | |
528 | ||
9effc146 DA |
529 | enum { |
530 | SCTP_AUTH_NEW_KEY, | |
531 | #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY /* compatible with before */ | |
532 | SCTP_AUTH_FREE_KEY, | |
533 | SCTP_AUTH_NO_AUTH, | |
534 | }; | |
5dec02d7 PS |
535 | |
536 | /* | |
537 | * 6.1.9. SCTP_SENDER_DRY_EVENT | |
538 | * | |
539 | * When the SCTP stack has no more user data to send or retransmit, this | |
540 | * notification is given to the user. Also, at the time when a user app | |
541 | * subscribes to this event, if there is no data to be sent or | |
542 | * retransmit, the stack will immediately send up this notification. | |
543 | */ | |
544 | struct sctp_sender_dry_event { | |
545 | __u16 sender_dry_type; | |
546 | __u16 sender_dry_flags; | |
547 | __u32 sender_dry_length; | |
548 | sctp_assoc_t sender_dry_assoc_id; | |
549 | }; | |
550 | ||
ae429903 SH |
551 | #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 |
552 | #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 | |
553 | #define SCTP_STREAM_RESET_DENIED 0x0004 | |
554 | #define SCTP_STREAM_RESET_FAILED 0x0008 | |
555 | struct sctp_stream_reset_event { | |
556 | __u16 strreset_type; | |
557 | __u16 strreset_flags; | |
558 | __u32 strreset_length; | |
559 | sctp_assoc_t strreset_assoc_id; | |
560 | __u16 strreset_stream_list[]; | |
561 | }; | |
562 | ||
2099b983 SH |
563 | #define SCTP_ASSOC_RESET_DENIED 0x0004 |
564 | #define SCTP_ASSOC_RESET_FAILED 0x0008 | |
565 | struct sctp_assoc_reset_event { | |
566 | __u16 assocreset_type; | |
567 | __u16 assocreset_flags; | |
568 | __u32 assocreset_length; | |
569 | sctp_assoc_t assocreset_assoc_id; | |
570 | __u32 assocreset_local_tsn; | |
571 | __u32 assocreset_remote_tsn; | |
572 | }; | |
573 | ||
574 | #define SCTP_ASSOC_CHANGE_DENIED 0x0004 | |
575 | #define SCTP_ASSOC_CHANGE_FAILED 0x0008 | |
8d42678d DA |
576 | #define SCTP_STREAM_CHANGE_DENIED SCTP_ASSOC_CHANGE_DENIED |
577 | #define SCTP_STREAM_CHANGE_FAILED SCTP_ASSOC_CHANGE_FAILED | |
2099b983 SH |
578 | struct sctp_stream_change_event { |
579 | __u16 strchange_type; | |
580 | __u16 strchange_flags; | |
581 | __u32 strchange_length; | |
582 | sctp_assoc_t strchange_assoc_id; | |
583 | __u16 strchange_instrms; | |
584 | __u16 strchange_outstrms; | |
585 | }; | |
586 | ||
5dec02d7 PS |
587 | /* |
588 | * Described in Section 7.3 | |
589 | * Ancillary Data and Notification Interest Options | |
590 | */ | |
591 | struct sctp_event_subscribe { | |
592 | __u8 sctp_data_io_event; | |
593 | __u8 sctp_association_event; | |
594 | __u8 sctp_address_event; | |
595 | __u8 sctp_send_failure_event; | |
596 | __u8 sctp_peer_error_event; | |
597 | __u8 sctp_shutdown_event; | |
598 | __u8 sctp_partial_delivery_event; | |
599 | __u8 sctp_adaptation_layer_event; | |
600 | __u8 sctp_authentication_event; | |
601 | __u8 sctp_sender_dry_event; | |
ae429903 | 602 | __u8 sctp_stream_reset_event; |
2099b983 SH |
603 | __u8 sctp_assoc_reset_event; |
604 | __u8 sctp_stream_change_event; | |
5dec02d7 PS |
605 | }; |
606 | ||
607 | /* | |
608 | * 5.3.1 SCTP Notification Structure | |
609 | * | |
610 | * The notification structure is defined as the union of all | |
611 | * notification types. | |
612 | * | |
613 | */ | |
614 | union sctp_notification { | |
615 | struct { | |
616 | __u16 sn_type; /* Notification type. */ | |
617 | __u16 sn_flags; | |
618 | __u32 sn_length; | |
619 | } sn_header; | |
620 | struct sctp_assoc_change sn_assoc_change; | |
621 | struct sctp_paddr_change sn_paddr_change; | |
622 | struct sctp_remote_error sn_remote_error; | |
623 | struct sctp_send_failed sn_send_failed; | |
624 | struct sctp_shutdown_event sn_shutdown_event; | |
625 | struct sctp_adaptation_event sn_adaptation_event; | |
626 | struct sctp_pdapi_event sn_pdapi_event; | |
627 | struct sctp_authkey_event sn_authkey_event; | |
628 | struct sctp_sender_dry_event sn_sender_dry_event; | |
ae429903 | 629 | struct sctp_stream_reset_event sn_strreset_event; |
2099b983 SH |
630 | struct sctp_assoc_reset_event sn_assocreset_event; |
631 | struct sctp_stream_change_event sn_strchange_event; | |
5dec02d7 PS |
632 | }; |
633 | ||
634 | /* Section 5.3.1 | |
635 | * All standard values for sn_type flags are greater than 2^15. | |
636 | * Values from 2^15 and down are reserved. | |
637 | */ | |
638 | ||
639 | enum sctp_sn_type { | |
8d42678d DA |
640 | SCTP_SN_TYPE_BASE = (1<<15), |
641 | SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE, | |
642 | #define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT | |
5dec02d7 PS |
643 | SCTP_ASSOC_CHANGE, |
644 | #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE | |
645 | SCTP_PEER_ADDR_CHANGE, | |
646 | #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE | |
647 | SCTP_SEND_FAILED, | |
648 | #define SCTP_SEND_FAILED SCTP_SEND_FAILED | |
649 | SCTP_REMOTE_ERROR, | |
650 | #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR | |
651 | SCTP_SHUTDOWN_EVENT, | |
652 | #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT | |
653 | SCTP_PARTIAL_DELIVERY_EVENT, | |
654 | #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT | |
655 | SCTP_ADAPTATION_INDICATION, | |
656 | #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION | |
657 | SCTP_AUTHENTICATION_EVENT, | |
658 | #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT | |
659 | SCTP_SENDER_DRY_EVENT, | |
660 | #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT | |
ae429903 SH |
661 | SCTP_STREAM_RESET_EVENT, |
662 | #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT | |
2099b983 SH |
663 | SCTP_ASSOC_RESET_EVENT, |
664 | #define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT | |
665 | SCTP_STREAM_CHANGE_EVENT, | |
666 | #define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT | |
8d42678d DA |
667 | SCTP_SN_TYPE_MAX = SCTP_STREAM_CHANGE_EVENT, |
668 | #define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX | |
5dec02d7 PS |
669 | }; |
670 | ||
671 | /* Notification error codes used to fill up the error fields in some | |
672 | * notifications. | |
673 | * SCTP_PEER_ADDRESS_CHAGE : spc_error | |
674 | * SCTP_ASSOC_CHANGE : sac_error | |
675 | * These names should be potentially included in the draft 04 of the SCTP | |
676 | * sockets API specification. | |
677 | */ | |
678 | typedef enum sctp_sn_error { | |
679 | SCTP_FAILED_THRESHOLD, | |
680 | SCTP_RECEIVED_SACK, | |
681 | SCTP_HEARTBEAT_SUCCESS, | |
682 | SCTP_RESPONSE_TO_USER_REQ, | |
683 | SCTP_INTERNAL_ERROR, | |
684 | SCTP_SHUTDOWN_GUARD_EXPIRES, | |
685 | SCTP_PEER_FAULTY, | |
686 | } sctp_sn_error_t; | |
687 | ||
688 | /* | |
689 | * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) | |
690 | * | |
691 | * The protocol parameters used to initialize and bound retransmission | |
692 | * timeout (RTO) are tunable. See [SCTP] for more information on how | |
693 | * these parameters are used in RTO calculation. | |
694 | */ | |
695 | struct sctp_rtoinfo { | |
696 | sctp_assoc_t srto_assoc_id; | |
697 | __u32 srto_initial; | |
698 | __u32 srto_max; | |
699 | __u32 srto_min; | |
700 | }; | |
701 | ||
702 | /* | |
703 | * 7.1.2 Association Parameters (SCTP_ASSOCINFO) | |
704 | * | |
705 | * This option is used to both examine and set various association and | |
706 | * endpoint parameters. | |
707 | */ | |
708 | struct sctp_assocparams { | |
709 | sctp_assoc_t sasoc_assoc_id; | |
710 | __u16 sasoc_asocmaxrxt; | |
711 | __u16 sasoc_number_peer_destinations; | |
712 | __u32 sasoc_peer_rwnd; | |
713 | __u32 sasoc_local_rwnd; | |
714 | __u32 sasoc_cookie_life; | |
715 | }; | |
716 | ||
717 | /* | |
718 | * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) | |
719 | * | |
720 | * Requests that the peer mark the enclosed address as the association | |
721 | * primary. The enclosed address must be one of the association's | |
722 | * locally bound addresses. The following structure is used to make a | |
723 | * set primary request: | |
724 | */ | |
725 | struct sctp_setpeerprim { | |
726 | sctp_assoc_t sspp_assoc_id; | |
727 | struct sockaddr_storage sspp_addr; | |
728 | } __attribute__((packed, aligned(4))); | |
729 | ||
730 | /* | |
731 | * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) | |
732 | * | |
733 | * Requests that the local SCTP stack use the enclosed peer address as | |
734 | * the association primary. The enclosed address must be one of the | |
735 | * association peer's addresses. The following structure is used to | |
736 | * make a set peer primary request: | |
737 | */ | |
738 | struct sctp_prim { | |
739 | sctp_assoc_t ssp_assoc_id; | |
740 | struct sockaddr_storage ssp_addr; | |
741 | } __attribute__((packed, aligned(4))); | |
742 | ||
743 | /* For backward compatibility use, define the old name too */ | |
744 | #define sctp_setprim sctp_prim | |
745 | ||
746 | /* | |
747 | * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER) | |
748 | * | |
749 | * Requests that the local endpoint set the specified Adaptation Layer | |
750 | * Indication parameter for all future INIT and INIT-ACK exchanges. | |
751 | */ | |
752 | struct sctp_setadaptation { | |
753 | __u32 ssb_adaptation_ind; | |
754 | }; | |
755 | ||
756 | /* | |
757 | * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) | |
758 | * | |
759 | * Applications can enable or disable heartbeats for any peer address | |
760 | * of an association, modify an address's heartbeat interval, force a | |
761 | * heartbeat to be sent immediately, and adjust the address's maximum | |
762 | * number of retransmissions sent before an address is considered | |
763 | * unreachable. The following structure is used to access and modify an | |
764 | * address's parameters: | |
765 | */ | |
766 | enum sctp_spp_flags { | |
767 | SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/ | |
768 | SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/ | |
769 | SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE, | |
770 | SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/ | |
771 | SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/ | |
772 | SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ | |
773 | SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE, | |
774 | SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/ | |
775 | SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/ | |
776 | SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE, | |
777 | SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */ | |
22ddbd82 DA |
778 | SPP_IPV6_FLOWLABEL = 1<<8, |
779 | SPP_DSCP = 1<<9, | |
5dec02d7 PS |
780 | }; |
781 | ||
782 | struct sctp_paddrparams { | |
783 | sctp_assoc_t spp_assoc_id; | |
784 | struct sockaddr_storage spp_address; | |
785 | __u32 spp_hbinterval; | |
786 | __u16 spp_pathmaxrxt; | |
787 | __u32 spp_pathmtu; | |
788 | __u32 spp_sackdelay; | |
789 | __u32 spp_flags; | |
22ddbd82 DA |
790 | __u32 spp_ipv6_flowlabel; |
791 | __u8 spp_dscp; | |
5dec02d7 PS |
792 | } __attribute__((packed, aligned(4))); |
793 | ||
794 | /* | |
795 | * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK) | |
796 | * | |
797 | * This set option adds a chunk type that the user is requesting to be | |
798 | * received only in an authenticated way. Changes to the list of chunks | |
799 | * will only effect future associations on the socket. | |
800 | */ | |
801 | struct sctp_authchunk { | |
802 | __u8 sauth_chunk; | |
803 | }; | |
804 | ||
805 | /* | |
806 | * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT) | |
807 | * | |
808 | * This option gets or sets the list of HMAC algorithms that the local | |
809 | * endpoint requires the peer to use. | |
810 | */ | |
811 | /* This here is only used by user space as is. It might not be a good idea | |
812 | * to export/reveal the whole structure with reserved fields etc. | |
813 | */ | |
814 | enum { | |
815 | SCTP_AUTH_HMAC_ID_SHA1 = 1, | |
816 | SCTP_AUTH_HMAC_ID_SHA256 = 3, | |
817 | }; | |
818 | ||
819 | struct sctp_hmacalgo { | |
820 | __u32 shmac_num_idents; | |
821 | __u16 shmac_idents[]; | |
822 | }; | |
823 | ||
824 | /* Sadly, user and kernel space have different names for | |
825 | * this structure member, so this is to not break anything. | |
826 | */ | |
827 | #define shmac_number_of_idents shmac_num_idents | |
828 | ||
829 | /* | |
830 | * 7.1.20. Set a shared key (SCTP_AUTH_KEY) | |
831 | * | |
832 | * This option will set a shared secret key which is used to build an | |
833 | * association shared key. | |
834 | */ | |
835 | struct sctp_authkey { | |
836 | sctp_assoc_t sca_assoc_id; | |
837 | __u16 sca_keynumber; | |
838 | __u16 sca_keylength; | |
839 | __u8 sca_key[]; | |
840 | }; | |
841 | ||
842 | /* | |
843 | * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY) | |
844 | * | |
845 | * This option will get or set the active shared key to be used to build | |
846 | * the association shared key. | |
847 | */ | |
848 | ||
849 | struct sctp_authkeyid { | |
850 | sctp_assoc_t scact_assoc_id; | |
851 | __u16 scact_keynumber; | |
852 | }; | |
853 | ||
854 | ||
855 | /* | |
856 | * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK) | |
857 | * | |
858 | * This option will effect the way delayed acks are performed. This | |
859 | * option allows you to get or set the delayed ack time, in | |
860 | * milliseconds. It also allows changing the delayed ack frequency. | |
861 | * Changing the frequency to 1 disables the delayed sack algorithm. If | |
862 | * the assoc_id is 0, then this sets or gets the endpoints default | |
863 | * values. If the assoc_id field is non-zero, then the set or get | |
864 | * effects the specified association for the one to many model (the | |
865 | * assoc_id field is ignored by the one to one model). Note that if | |
866 | * sack_delay or sack_freq are 0 when setting this option, then the | |
867 | * current values will remain unchanged. | |
868 | */ | |
869 | struct sctp_sack_info { | |
870 | sctp_assoc_t sack_assoc_id; | |
871 | uint32_t sack_delay; | |
872 | uint32_t sack_freq; | |
873 | }; | |
874 | ||
875 | struct sctp_assoc_value { | |
876 | sctp_assoc_t assoc_id; | |
877 | uint32_t assoc_value; | |
878 | }; | |
879 | ||
f53da99a SH |
880 | struct sctp_stream_value { |
881 | sctp_assoc_t assoc_id; | |
882 | uint16_t stream_id; | |
883 | uint16_t stream_value; | |
884 | }; | |
885 | ||
5dec02d7 PS |
886 | /* |
887 | * 7.2.2 Peer Address Information | |
888 | * | |
889 | * Applications can retrieve information about a specific peer address | |
890 | * of an association, including its reachability state, congestion | |
891 | * window, and retransmission timer values. This information is | |
892 | * read-only. The following structure is used to access this | |
893 | * information: | |
894 | */ | |
895 | struct sctp_paddrinfo { | |
896 | sctp_assoc_t spinfo_assoc_id; | |
897 | struct sockaddr_storage spinfo_address; | |
898 | __s32 spinfo_state; | |
899 | __u32 spinfo_cwnd; | |
900 | __u32 spinfo_srtt; | |
901 | __u32 spinfo_rto; | |
902 | __u32 spinfo_mtu; | |
903 | } __attribute__((packed, aligned(4))); | |
904 | ||
905 | /* Peer addresses's state. */ | |
906 | /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x] | |
907 | * calls. | |
908 | * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters. | |
909 | * Not yet confirmed by a heartbeat and not available for data | |
910 | * transfers. | |
911 | * ACTIVE : Peer address confirmed, active and available for data transfers. | |
912 | * INACTIVE: Peer address inactive and not available for data transfers. | |
913 | */ | |
914 | enum sctp_spinfo_state { | |
915 | SCTP_INACTIVE, | |
916 | SCTP_PF, | |
917 | SCTP_ACTIVE, | |
918 | SCTP_UNCONFIRMED, | |
919 | SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */ | |
920 | }; | |
921 | ||
922 | /* | |
923 | * 7.2.1 Association Status (SCTP_STATUS) | |
924 | * | |
925 | * Applications can retrieve current status information about an | |
926 | * association, including association state, peer receiver window size, | |
927 | * number of unacked data chunks, and number of data chunks pending | |
928 | * receipt. This information is read-only. The following structure is | |
929 | * used to access this information: | |
930 | */ | |
931 | struct sctp_status { | |
932 | sctp_assoc_t sstat_assoc_id; | |
933 | __s32 sstat_state; | |
934 | __u32 sstat_rwnd; | |
935 | __u16 sstat_unackdata; | |
936 | __u16 sstat_penddata; | |
937 | __u16 sstat_instrms; | |
938 | __u16 sstat_outstrms; | |
939 | __u32 sstat_fragmentation_point; | |
940 | struct sctp_paddrinfo sstat_primary; | |
941 | }; | |
942 | ||
943 | /* | |
944 | * 7.2.3. Get the list of chunks the peer requires to be authenticated | |
945 | * (SCTP_PEER_AUTH_CHUNKS) | |
946 | * | |
947 | * This option gets a list of chunks for a specified association that | |
948 | * the peer requires to be received authenticated only. | |
949 | */ | |
950 | struct sctp_authchunks { | |
951 | sctp_assoc_t gauth_assoc_id; | |
952 | __u32 gauth_number_of_chunks; | |
953 | uint8_t gauth_chunks[]; | |
954 | }; | |
955 | ||
956 | /* The broken spelling has been released already in lksctp-tools header, | |
957 | * so don't break anyone, now that it's fixed. | |
958 | */ | |
959 | #define guth_number_of_chunks gauth_number_of_chunks | |
960 | ||
961 | /* Association states. */ | |
962 | enum sctp_sstat_state { | |
963 | SCTP_EMPTY = 0, | |
964 | SCTP_CLOSED = 1, | |
965 | SCTP_COOKIE_WAIT = 2, | |
966 | SCTP_COOKIE_ECHOED = 3, | |
967 | SCTP_ESTABLISHED = 4, | |
968 | SCTP_SHUTDOWN_PENDING = 5, | |
969 | SCTP_SHUTDOWN_SENT = 6, | |
970 | SCTP_SHUTDOWN_RECEIVED = 7, | |
971 | SCTP_SHUTDOWN_ACK_SENT = 8, | |
972 | }; | |
973 | ||
974 | /* | |
975 | * 8.2.6. Get the Current Identifiers of Associations | |
976 | * (SCTP_GET_ASSOC_ID_LIST) | |
977 | * | |
978 | * This option gets the current list of SCTP association identifiers of | |
979 | * the SCTP associations handled by a one-to-many style socket. | |
980 | */ | |
981 | struct sctp_assoc_ids { | |
982 | __u32 gaids_number_of_ids; | |
983 | sctp_assoc_t gaids_assoc_id[]; | |
984 | }; | |
985 | ||
986 | /* | |
987 | * 8.3, 8.5 get all peer/local addresses in an association. | |
988 | * This parameter struct is used by SCTP_GET_PEER_ADDRS and | |
989 | * SCTP_GET_LOCAL_ADDRS socket options used internally to implement | |
990 | * sctp_getpaddrs() and sctp_getladdrs() API. | |
991 | */ | |
992 | struct sctp_getaddrs_old { | |
993 | sctp_assoc_t assoc_id; | |
994 | int addr_num; | |
995 | struct sockaddr *addrs; | |
996 | }; | |
997 | ||
998 | struct sctp_getaddrs { | |
999 | sctp_assoc_t assoc_id; /*input*/ | |
1000 | __u32 addr_num; /*output*/ | |
1001 | __u8 addrs[0]; /*output, variable size*/ | |
1002 | }; | |
1003 | ||
1004 | /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves | |
1005 | * association stats. All stats are counts except sas_maxrto and | |
1006 | * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since | |
1007 | * the last call. Will return 0 when RTO was not update since last call | |
1008 | */ | |
1009 | struct sctp_assoc_stats { | |
1010 | sctp_assoc_t sas_assoc_id; /* Input */ | |
1011 | /* Transport of observed max RTO */ | |
1012 | struct sockaddr_storage sas_obs_rto_ipaddr; | |
1013 | __u64 sas_maxrto; /* Maximum Observed RTO for period */ | |
1014 | __u64 sas_isacks; /* SACKs received */ | |
1015 | __u64 sas_osacks; /* SACKs sent */ | |
1016 | __u64 sas_opackets; /* Packets sent */ | |
1017 | __u64 sas_ipackets; /* Packets received */ | |
1018 | __u64 sas_rtxchunks; /* Retransmitted Chunks */ | |
1019 | __u64 sas_outofseqtsns;/* TSN received > next expected */ | |
1020 | __u64 sas_idupchunks; /* Dups received (ordered+unordered) */ | |
1021 | __u64 sas_gapcnt; /* Gap Acknowledgements Received */ | |
1022 | __u64 sas_ouodchunks; /* Unordered data chunks sent */ | |
1023 | __u64 sas_iuodchunks; /* Unordered data chunks received */ | |
1024 | __u64 sas_oodchunks; /* Ordered data chunks sent */ | |
1025 | __u64 sas_iodchunks; /* Ordered data chunks received */ | |
1026 | __u64 sas_octrlchunks; /* Control chunks sent */ | |
1027 | __u64 sas_ictrlchunks; /* Control chunks received */ | |
1028 | }; | |
1029 | ||
1030 | /* | |
1031 | * 8.1 sctp_bindx() | |
1032 | * | |
1033 | * The flags parameter is formed from the bitwise OR of zero or more of the | |
1034 | * following currently defined flags: | |
1035 | */ | |
1036 | #define SCTP_BINDX_ADD_ADDR 0x01 | |
1037 | #define SCTP_BINDX_REM_ADDR 0x02 | |
1038 | ||
1039 | /* This is the structure that is passed as an argument(optval) to | |
1040 | * getsockopt(SCTP_SOCKOPT_PEELOFF). | |
1041 | */ | |
1042 | typedef struct { | |
1043 | sctp_assoc_t associd; | |
1044 | int sd; | |
1045 | } sctp_peeloff_arg_t; | |
1046 | ||
517771e2 SH |
1047 | typedef struct { |
1048 | sctp_peeloff_arg_t p_arg; | |
1049 | unsigned flags; | |
1050 | } sctp_peeloff_flags_arg_t; | |
1051 | ||
5dec02d7 PS |
1052 | /* |
1053 | * Peer Address Thresholds socket option | |
1054 | */ | |
1055 | struct sctp_paddrthlds { | |
1056 | sctp_assoc_t spt_assoc_id; | |
1057 | struct sockaddr_storage spt_address; | |
1058 | __u16 spt_pathmaxrxt; | |
1059 | __u16 spt_pathpfthld; | |
1060 | }; | |
1061 | ||
1062 | /* | |
1063 | * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status | |
1064 | */ | |
1065 | struct sctp_prstatus { | |
1066 | sctp_assoc_t sprstat_assoc_id; | |
1067 | __u16 sprstat_sid; | |
1068 | __u16 sprstat_policy; | |
1069 | __u64 sprstat_abandoned_unsent; | |
1070 | __u64 sprstat_abandoned_sent; | |
1071 | }; | |
1072 | ||
1073 | struct sctp_default_prinfo { | |
1074 | sctp_assoc_t pr_assoc_id; | |
1075 | __u32 pr_value; | |
1076 | __u16 pr_policy; | |
1077 | }; | |
1078 | ||
1079 | struct sctp_info { | |
1080 | __u32 sctpi_tag; | |
1081 | __u32 sctpi_state; | |
1082 | __u32 sctpi_rwnd; | |
1083 | __u16 sctpi_unackdata; | |
1084 | __u16 sctpi_penddata; | |
1085 | __u16 sctpi_instrms; | |
1086 | __u16 sctpi_outstrms; | |
1087 | __u32 sctpi_fragmentation_point; | |
1088 | __u32 sctpi_inqueue; | |
1089 | __u32 sctpi_outqueue; | |
1090 | __u32 sctpi_overall_error; | |
1091 | __u32 sctpi_max_burst; | |
1092 | __u32 sctpi_maxseg; | |
1093 | __u32 sctpi_peer_rwnd; | |
1094 | __u32 sctpi_peer_tag; | |
1095 | __u8 sctpi_peer_capable; | |
1096 | __u8 sctpi_peer_sack; | |
1097 | __u16 __reserved1; | |
1098 | ||
1099 | /* assoc status info */ | |
1100 | __u64 sctpi_isacks; | |
1101 | __u64 sctpi_osacks; | |
1102 | __u64 sctpi_opackets; | |
1103 | __u64 sctpi_ipackets; | |
1104 | __u64 sctpi_rtxchunks; | |
1105 | __u64 sctpi_outofseqtsns; | |
1106 | __u64 sctpi_idupchunks; | |
1107 | __u64 sctpi_gapcnt; | |
1108 | __u64 sctpi_ouodchunks; | |
1109 | __u64 sctpi_iuodchunks; | |
1110 | __u64 sctpi_oodchunks; | |
1111 | __u64 sctpi_iodchunks; | |
1112 | __u64 sctpi_octrlchunks; | |
1113 | __u64 sctpi_ictrlchunks; | |
1114 | ||
1115 | /* primary transport info */ | |
1116 | struct sockaddr_storage sctpi_p_address; | |
1117 | __s32 sctpi_p_state; | |
1118 | __u32 sctpi_p_cwnd; | |
1119 | __u32 sctpi_p_srtt; | |
1120 | __u32 sctpi_p_rto; | |
1121 | __u32 sctpi_p_hbinterval; | |
1122 | __u32 sctpi_p_pathmaxrxt; | |
1123 | __u32 sctpi_p_sackdelay; | |
1124 | __u32 sctpi_p_sackfreq; | |
1125 | __u32 sctpi_p_ssthresh; | |
1126 | __u32 sctpi_p_partial_bytes_acked; | |
1127 | __u32 sctpi_p_flight_size; | |
1128 | __u16 sctpi_p_error; | |
1129 | __u16 __reserved2; | |
1130 | ||
1131 | /* sctp sock info */ | |
1132 | __u32 sctpi_s_autoclose; | |
1133 | __u32 sctpi_s_adaptation_ind; | |
1134 | __u32 sctpi_s_pd_point; | |
1135 | __u8 sctpi_s_nodelay; | |
1136 | __u8 sctpi_s_disable_fragments; | |
1137 | __u8 sctpi_s_v4mapped; | |
1138 | __u8 sctpi_s_frag_interleave; | |
1139 | __u32 sctpi_s_type; | |
1140 | __u32 __reserved3; | |
1141 | }; | |
1142 | ||
a044b36a SH |
1143 | struct sctp_reset_streams { |
1144 | sctp_assoc_t srs_assoc_id; | |
1145 | uint16_t srs_flags; | |
1146 | uint16_t srs_number_streams; /* 0 == ALL */ | |
1147 | uint16_t srs_stream_list[]; /* list if srs_num_streams is not 0 */ | |
1148 | }; | |
1149 | ||
cad54934 SH |
1150 | struct sctp_add_streams { |
1151 | sctp_assoc_t sas_assoc_id; | |
1152 | uint16_t sas_instrms; | |
1153 | uint16_t sas_outstrms; | |
1154 | }; | |
1155 | ||
8d42678d DA |
1156 | struct sctp_event { |
1157 | sctp_assoc_t se_assoc_id; | |
1158 | uint16_t se_type; | |
1159 | uint8_t se_on; | |
1160 | }; | |
1161 | ||
f53da99a SH |
1162 | /* SCTP Stream schedulers */ |
1163 | enum sctp_sched_type { | |
1164 | SCTP_SS_FCFS, | |
8d42678d | 1165 | SCTP_SS_DEFAULT = SCTP_SS_FCFS, |
f53da99a SH |
1166 | SCTP_SS_PRIO, |
1167 | SCTP_SS_RR, | |
1168 | SCTP_SS_MAX = SCTP_SS_RR | |
1169 | }; | |
1170 | ||
5dec02d7 | 1171 | #endif /* _SCTP_H */ |