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 | #define SCTP_PEER_ADDR_THLDS_V2 37 |
109 | |
110 | /* Internal Socket Options. Some of the sctp library functions are |
111 | * implemented using these socket options. |
112 | */ |
113 | #define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */ |
114 | #define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */ |
115 | #define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */ |
116 | /* Options 104-106 are deprecated and removed. Do not use this space */ |
117 | #define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */ |
118 | #define SCTP_GET_PEER_ADDRS 108 /* Get all peer address. */ |
119 | #define SCTP_GET_LOCAL_ADDRS 109 /* Get all local address. */ |
120 | #define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */ |
121 | #define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */ |
122 | #define SCTP_GET_ASSOC_STATS 112 /* Read only */ |
123 | #define SCTP_PR_SUPPORTED 113 |
124 | #define SCTP_DEFAULT_PRINFO 114 |
125 | #define SCTP_PR_ASSOC_STATUS 115 |
126 | #define SCTP_PR_STREAM_STATUS 116 |
127 | #define SCTP_RECONFIG_SUPPORTED 117 |
128 | #define SCTP_ENABLE_STREAM_RESET 118 |
129 | #define SCTP_RESET_STREAMS 119 |
130 | #define SCTP_RESET_ASSOC 120 |
131 | #define SCTP_ADD_STREAMS 121 |
132 | #define SCTP_SOCKOPT_PEELOFF_FLAGS 122 |
133 | #define SCTP_STREAM_SCHEDULER 123 |
134 | #define SCTP_STREAM_SCHEDULER_VALUE 124 |
135 | #define SCTP_INTERLEAVING_SUPPORTED 125 |
136 | #define SCTP_SENDMSG_CONNECT 126 |
137 | #define SCTP_EVENT 127 |
138 | #define SCTP_ASCONF_SUPPORTED 128 |
139 | #define SCTP_AUTH_SUPPORTED 129 |
140 | #define SCTP_ECN_SUPPORTED 130 |
141 | #define SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 131 |
142 | #define SCTP_EXPOSE_PF_STATE SCTP_EXPOSE_POTENTIALLY_FAILED_STATE |
143 | #define SCTP_REMOTE_UDP_ENCAPS_PORT 132 |
144 | #define SCTP_PLPMTUD_PROBE_INTERVAL 133 |
145 | |
146 | /* PR-SCTP policies */ |
147 | #define SCTP_PR_SCTP_NONE 0x0000 |
148 | #define SCTP_PR_SCTP_TTL 0x0010 |
149 | #define SCTP_PR_SCTP_RTX 0x0020 |
150 | #define SCTP_PR_SCTP_PRIO 0x0030 |
151 | #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_PRIO |
152 | #define SCTP_PR_SCTP_MASK 0x0030 |
153 | |
154 | #define __SCTP_PR_INDEX(x) ((x >> 4) - 1) |
155 | #define SCTP_PR_INDEX(x) __SCTP_PR_INDEX(SCTP_PR_SCTP_ ## x) |
156 | |
157 | #define SCTP_PR_POLICY(x) ((x) & SCTP_PR_SCTP_MASK) |
158 | #define SCTP_PR_SET_POLICY(flags, x) \ |
159 | do { \ |
160 | flags &= ~SCTP_PR_SCTP_MASK; \ |
161 | flags |= x; \ |
162 | } while (0) |
163 | |
164 | #define SCTP_PR_TTL_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_TTL) |
165 | #define SCTP_PR_RTX_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_RTX) |
166 | #define SCTP_PR_PRIO_ENABLED(x) (SCTP_PR_POLICY(x) == SCTP_PR_SCTP_PRIO) |
167 | |
168 | /* For enable stream reset */ |
169 | #define SCTP_ENABLE_RESET_STREAM_REQ 0x01 |
170 | #define SCTP_ENABLE_RESET_ASSOC_REQ 0x02 |
171 | #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x04 |
172 | #define SCTP_ENABLE_STRRESET_MASK 0x07 |
173 | |
174 | #define SCTP_STREAM_RESET_INCOMING 0x01 |
175 | #define SCTP_STREAM_RESET_OUTGOING 0x02 |
176 | |
177 | /* These are bit fields for msghdr->msg_flags. See section 5.1. */ |
178 | /* On user space Linux, these live in <bits/socket.h> as an enum. */ |
179 | enum sctp_msg_flags { |
180 | MSG_NOTIFICATION = 0x8000, |
181 | #define MSG_NOTIFICATION MSG_NOTIFICATION |
182 | }; |
183 | |
184 | /* 5.3.1 SCTP Initiation Structure (SCTP_INIT) |
185 | * |
186 | * This cmsghdr structure provides information for initializing new |
187 | * SCTP associations with sendmsg(). The SCTP_INITMSG socket option |
188 | * uses this same data structure. This structure is not used for |
189 | * recvmsg(). |
190 | * |
191 | * cmsg_level cmsg_type cmsg_data[] |
192 | * ------------ ------------ ---------------------- |
193 | * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg |
194 | */ |
195 | struct sctp_initmsg { |
196 | __u16 sinit_num_ostreams; |
197 | __u16 sinit_max_instreams; |
198 | __u16 sinit_max_attempts; |
199 | __u16 sinit_max_init_timeo; |
200 | }; |
201 | |
202 | /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV) |
203 | * |
204 | * This cmsghdr structure specifies SCTP options for sendmsg() and |
205 | * describes SCTP header information about a received message through |
206 | * recvmsg(). |
207 | * |
208 | * cmsg_level cmsg_type cmsg_data[] |
209 | * ------------ ------------ ---------------------- |
210 | * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo |
211 | */ |
212 | struct sctp_sndrcvinfo { |
213 | __u16 sinfo_stream; |
214 | __u16 sinfo_ssn; |
215 | __u16 sinfo_flags; |
216 | __u32 sinfo_ppid; |
217 | __u32 sinfo_context; |
218 | __u32 sinfo_timetolive; |
219 | __u32 sinfo_tsn; |
220 | __u32 sinfo_cumtsn; |
221 | sctp_assoc_t sinfo_assoc_id; |
222 | }; |
223 | |
224 | /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO) |
225 | * |
226 | * This cmsghdr structure specifies SCTP options for sendmsg(). |
227 | * |
228 | * cmsg_level cmsg_type cmsg_data[] |
229 | * ------------ ------------ ------------------- |
230 | * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo |
231 | */ |
232 | struct sctp_sndinfo { |
233 | __u16 snd_sid; |
234 | __u16 snd_flags; |
235 | __u32 snd_ppid; |
236 | __u32 snd_context; |
237 | sctp_assoc_t snd_assoc_id; |
238 | }; |
239 | |
240 | /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO) |
241 | * |
242 | * This cmsghdr structure describes SCTP receive information |
243 | * about a received message through recvmsg(). |
244 | * |
245 | * cmsg_level cmsg_type cmsg_data[] |
246 | * ------------ ------------ ------------------- |
247 | * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo |
248 | */ |
249 | struct sctp_rcvinfo { |
250 | __u16 rcv_sid; |
251 | __u16 rcv_ssn; |
252 | __u16 rcv_flags; |
253 | __u32 rcv_ppid; |
254 | __u32 rcv_tsn; |
255 | __u32 rcv_cumtsn; |
256 | __u32 rcv_context; |
257 | sctp_assoc_t rcv_assoc_id; |
258 | }; |
259 | |
260 | /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO) |
261 | * |
262 | * This cmsghdr structure describes SCTP receive information |
263 | * of the next message that will be delivered through recvmsg() |
264 | * if this information is already available when delivering |
265 | * the current message. |
266 | * |
267 | * cmsg_level cmsg_type cmsg_data[] |
268 | * ------------ ------------ ------------------- |
269 | * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo |
270 | */ |
271 | struct sctp_nxtinfo { |
272 | __u16 nxt_sid; |
273 | __u16 nxt_flags; |
274 | __u32 nxt_ppid; |
275 | __u32 nxt_length; |
276 | sctp_assoc_t nxt_assoc_id; |
277 | }; |
278 | |
279 | /* 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO) |
280 | * |
281 | * This cmsghdr structure specifies SCTP options for sendmsg(). |
282 | * |
283 | * cmsg_level cmsg_type cmsg_data[] |
284 | * ------------ ------------ ------------------- |
285 | * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo |
286 | */ |
287 | struct sctp_prinfo { |
288 | __u16 pr_policy; |
289 | __u32 pr_value; |
290 | }; |
291 | |
292 | /* 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO) |
293 | * |
294 | * This cmsghdr structure specifies SCTP options for sendmsg(). |
295 | * |
296 | * cmsg_level cmsg_type cmsg_data[] |
297 | * ------------ ------------ ------------------- |
298 | * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo |
299 | */ |
300 | struct sctp_authinfo { |
301 | __u16 auth_keynumber; |
302 | }; |
303 | |
304 | /* |
305 | * sinfo_flags: 16 bits (unsigned integer) |
306 | * |
307 | * This field may contain any of the following flags and is composed of |
308 | * a bitwise OR of these values. |
309 | */ |
310 | enum sctp_sinfo_flags { |
311 | SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */ |
312 | SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */ |
313 | SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */ |
314 | SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */ |
315 | /* 2 bits here have been used by SCTP_PR_SCTP_MASK */ |
316 | SCTP_SENDALL = (1 << 6), |
317 | SCTP_PR_SCTP_ALL = (1 << 7), |
318 | SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */ |
319 | SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */ |
320 | }; |
321 | |
322 | typedef union { |
323 | __u8 raw; |
324 | struct sctp_initmsg init; |
325 | struct sctp_sndrcvinfo sndrcv; |
326 | } sctp_cmsg_data_t; |
327 | |
328 | /* These are cmsg_types. */ |
329 | typedef enum sctp_cmsg_type { |
330 | SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */ |
331 | #define SCTP_INIT SCTP_INIT |
332 | SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */ |
333 | #define SCTP_SNDRCV SCTP_SNDRCV |
334 | SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */ |
335 | #define SCTP_SNDINFO SCTP_SNDINFO |
336 | SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */ |
337 | #define SCTP_RCVINFO SCTP_RCVINFO |
338 | SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */ |
339 | #define SCTP_NXTINFO SCTP_NXTINFO |
340 | SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */ |
341 | #define SCTP_PRINFO SCTP_PRINFO |
342 | SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure */ |
343 | #define SCTP_AUTHINFO SCTP_AUTHINFO |
344 | SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */ |
345 | #define SCTP_DSTADDRV4 SCTP_DSTADDRV4 |
346 | SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */ |
347 | #define SCTP_DSTADDRV6 SCTP_DSTADDRV6 |
348 | } sctp_cmsg_t; |
349 | |
350 | /* |
351 | * 5.3.1.1 SCTP_ASSOC_CHANGE |
352 | * |
353 | * Communication notifications inform the ULP that an SCTP association |
354 | * has either begun or ended. The identifier for a new association is |
355 | * provided by this notificaion. The notification information has the |
356 | * following format: |
357 | * |
358 | */ |
359 | struct sctp_assoc_change { |
360 | __u16 sac_type; |
361 | __u16 sac_flags; |
362 | __u32 sac_length; |
363 | __u16 sac_state; |
364 | __u16 sac_error; |
365 | __u16 sac_outbound_streams; |
366 | __u16 sac_inbound_streams; |
367 | sctp_assoc_t sac_assoc_id; |
368 | __u8 sac_info[]; |
369 | }; |
370 | |
371 | /* |
372 | * sac_state: 32 bits (signed integer) |
373 | * |
374 | * This field holds one of a number of values that communicate the |
375 | * event that happened to the association. They include: |
376 | * |
377 | * Note: The following state names deviate from the API draft as |
378 | * the names clash too easily with other kernel symbols. |
379 | */ |
380 | enum sctp_sac_state { |
381 | SCTP_COMM_UP, |
382 | SCTP_COMM_LOST, |
383 | SCTP_RESTART, |
384 | SCTP_SHUTDOWN_COMP, |
385 | SCTP_CANT_STR_ASSOC, |
386 | }; |
387 | |
388 | /* |
389 | * 5.3.1.2 SCTP_PEER_ADDR_CHANGE |
390 | * |
391 | * When a destination address on a multi-homed peer encounters a change |
392 | * an interface details event is sent. The information has the |
393 | * following structure: |
394 | */ |
395 | struct sctp_paddr_change { |
396 | __u16 spc_type; |
397 | __u16 spc_flags; |
398 | __u32 spc_length; |
399 | struct sockaddr_storage spc_aaddr; |
400 | int spc_state; |
401 | int spc_error; |
402 | sctp_assoc_t spc_assoc_id; |
403 | } __attribute__((packed, aligned(4))); |
404 | |
405 | /* |
406 | * spc_state: 32 bits (signed integer) |
407 | * |
408 | * This field holds one of a number of values that communicate the |
409 | * event that happened to the address. They include: |
410 | */ |
411 | enum sctp_spc_state { |
412 | SCTP_ADDR_AVAILABLE, |
413 | SCTP_ADDR_UNREACHABLE, |
414 | SCTP_ADDR_REMOVED, |
415 | SCTP_ADDR_ADDED, |
416 | SCTP_ADDR_MADE_PRIM, |
417 | SCTP_ADDR_CONFIRMED, |
418 | SCTP_ADDR_POTENTIALLY_FAILED, |
419 | #define SCTP_ADDR_PF SCTP_ADDR_POTENTIALLY_FAILED |
420 | }; |
421 | |
422 | |
423 | /* |
424 | * 5.3.1.3 SCTP_REMOTE_ERROR |
425 | * |
426 | * A remote peer may send an Operational Error message to its peer. |
427 | * This message indicates a variety of error conditions on an |
428 | * association. The entire error TLV as it appears on the wire is |
429 | * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP |
430 | * specification [SCTP] and any extensions for a list of possible |
431 | * error formats. SCTP error TLVs have the format: |
432 | */ |
433 | struct sctp_remote_error { |
434 | __u16 sre_type; |
435 | __u16 sre_flags; |
436 | __u32 sre_length; |
437 | __be16 sre_error; |
438 | sctp_assoc_t sre_assoc_id; |
439 | __u8 sre_data[]; |
440 | }; |
441 | |
442 | |
443 | /* |
444 | * 5.3.1.4 SCTP_SEND_FAILED |
445 | * |
446 | * If SCTP cannot deliver a message it may return the message as a |
447 | * notification. |
448 | */ |
449 | struct sctp_send_failed { |
450 | __u16 ssf_type; |
451 | __u16 ssf_flags; |
452 | __u32 ssf_length; |
453 | __u32 ssf_error; |
454 | struct sctp_sndrcvinfo ssf_info; |
455 | sctp_assoc_t ssf_assoc_id; |
456 | __u8 ssf_data[]; |
457 | }; |
458 | |
459 | struct sctp_send_failed_event { |
460 | __u16 ssf_type; |
461 | __u16 ssf_flags; |
462 | __u32 ssf_length; |
463 | __u32 ssf_error; |
464 | struct sctp_sndinfo ssfe_info; |
465 | sctp_assoc_t ssf_assoc_id; |
466 | __u8 ssf_data[]; |
467 | }; |
468 | |
469 | /* |
470 | * ssf_flags: 16 bits (unsigned integer) |
471 | * |
472 | * The flag value will take one of the following values |
473 | * |
474 | * SCTP_DATA_UNSENT - Indicates that the data was never put on |
475 | * the wire. |
476 | * |
477 | * SCTP_DATA_SENT - Indicates that the data was put on the wire. |
478 | * Note that this does not necessarily mean that the |
479 | * data was (or was not) successfully delivered. |
480 | */ |
481 | enum sctp_ssf_flags { |
482 | SCTP_DATA_UNSENT, |
483 | SCTP_DATA_SENT, |
484 | }; |
485 | |
486 | /* |
487 | * 5.3.1.5 SCTP_SHUTDOWN_EVENT |
488 | * |
489 | * When a peer sends a SHUTDOWN, SCTP delivers this notification to |
490 | * inform the application that it should cease sending data. |
491 | */ |
492 | struct sctp_shutdown_event { |
493 | __u16 sse_type; |
494 | __u16 sse_flags; |
495 | __u32 sse_length; |
496 | sctp_assoc_t sse_assoc_id; |
497 | }; |
498 | |
499 | /* |
500 | * 5.3.1.6 SCTP_ADAPTATION_INDICATION |
501 | * |
502 | * When a peer sends a Adaptation Layer Indication parameter , SCTP |
503 | * delivers this notification to inform the application |
504 | * that of the peers requested adaptation layer. |
505 | */ |
506 | struct sctp_adaptation_event { |
507 | __u16 sai_type; |
508 | __u16 sai_flags; |
509 | __u32 sai_length; |
510 | __u32 sai_adaptation_ind; |
511 | sctp_assoc_t sai_assoc_id; |
512 | }; |
513 | |
514 | /* |
515 | * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT |
516 | * |
517 | * When a receiver is engaged in a partial delivery of a |
518 | * message this notification will be used to indicate |
519 | * various events. |
520 | */ |
521 | struct sctp_pdapi_event { |
522 | __u16 pdapi_type; |
523 | __u16 pdapi_flags; |
524 | __u32 pdapi_length; |
525 | __u32 pdapi_indication; |
526 | sctp_assoc_t pdapi_assoc_id; |
527 | __u32 pdapi_stream; |
528 | __u32 pdapi_seq; |
529 | }; |
530 | |
531 | enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, }; |
532 | |
533 | /* |
534 | * 5.3.1.8. SCTP_AUTHENTICATION_EVENT |
535 | * |
536 | * When a receiver is using authentication this message will provide |
537 | * notifications regarding new keys being made active as well as errors. |
538 | */ |
539 | struct sctp_authkey_event { |
540 | __u16 auth_type; |
541 | __u16 auth_flags; |
542 | __u32 auth_length; |
543 | __u16 auth_keynumber; |
544 | __u16 auth_altkeynumber; |
545 | __u32 auth_indication; |
546 | sctp_assoc_t auth_assoc_id; |
547 | }; |
548 | |
549 | enum { |
550 | SCTP_AUTH_NEW_KEY, |
551 | #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY /* compatible with before */ |
552 | SCTP_AUTH_FREE_KEY, |
553 | SCTP_AUTH_NO_AUTH, |
554 | }; |
555 | |
556 | /* |
557 | * 6.1.9. SCTP_SENDER_DRY_EVENT |
558 | * |
559 | * When the SCTP stack has no more user data to send or retransmit, this |
560 | * notification is given to the user. Also, at the time when a user app |
561 | * subscribes to this event, if there is no data to be sent or |
562 | * retransmit, the stack will immediately send up this notification. |
563 | */ |
564 | struct sctp_sender_dry_event { |
565 | __u16 sender_dry_type; |
566 | __u16 sender_dry_flags; |
567 | __u32 sender_dry_length; |
568 | sctp_assoc_t sender_dry_assoc_id; |
569 | }; |
570 | |
571 | #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 |
572 | #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 |
573 | #define SCTP_STREAM_RESET_DENIED 0x0004 |
574 | #define SCTP_STREAM_RESET_FAILED 0x0008 |
575 | struct sctp_stream_reset_event { |
576 | __u16 strreset_type; |
577 | __u16 strreset_flags; |
578 | __u32 strreset_length; |
579 | sctp_assoc_t strreset_assoc_id; |
580 | __u16 strreset_stream_list[]; |
581 | }; |
582 | |
583 | #define SCTP_ASSOC_RESET_DENIED 0x0004 |
584 | #define SCTP_ASSOC_RESET_FAILED 0x0008 |
585 | struct sctp_assoc_reset_event { |
586 | __u16 assocreset_type; |
587 | __u16 assocreset_flags; |
588 | __u32 assocreset_length; |
589 | sctp_assoc_t assocreset_assoc_id; |
590 | __u32 assocreset_local_tsn; |
591 | __u32 assocreset_remote_tsn; |
592 | }; |
593 | |
594 | #define SCTP_ASSOC_CHANGE_DENIED 0x0004 |
595 | #define SCTP_ASSOC_CHANGE_FAILED 0x0008 |
596 | #define SCTP_STREAM_CHANGE_DENIED SCTP_ASSOC_CHANGE_DENIED |
597 | #define SCTP_STREAM_CHANGE_FAILED SCTP_ASSOC_CHANGE_FAILED |
598 | struct sctp_stream_change_event { |
599 | __u16 strchange_type; |
600 | __u16 strchange_flags; |
601 | __u32 strchange_length; |
602 | sctp_assoc_t strchange_assoc_id; |
603 | __u16 strchange_instrms; |
604 | __u16 strchange_outstrms; |
605 | }; |
606 | |
607 | /* |
608 | * Described in Section 7.3 |
609 | * Ancillary Data and Notification Interest Options |
610 | */ |
611 | struct sctp_event_subscribe { |
612 | __u8 sctp_data_io_event; |
613 | __u8 sctp_association_event; |
614 | __u8 sctp_address_event; |
615 | __u8 sctp_send_failure_event; |
616 | __u8 sctp_peer_error_event; |
617 | __u8 sctp_shutdown_event; |
618 | __u8 sctp_partial_delivery_event; |
619 | __u8 sctp_adaptation_layer_event; |
620 | __u8 sctp_authentication_event; |
621 | __u8 sctp_sender_dry_event; |
622 | __u8 sctp_stream_reset_event; |
623 | __u8 sctp_assoc_reset_event; |
624 | __u8 sctp_stream_change_event; |
625 | __u8 sctp_send_failure_event_event; |
626 | }; |
627 | |
628 | /* |
629 | * 5.3.1 SCTP Notification Structure |
630 | * |
631 | * The notification structure is defined as the union of all |
632 | * notification types. |
633 | * |
634 | */ |
635 | union sctp_notification { |
636 | struct { |
637 | __u16 sn_type; /* Notification type. */ |
638 | __u16 sn_flags; |
639 | __u32 sn_length; |
640 | } ; |
641 | struct sctp_assoc_change sn_assoc_change; |
642 | struct sctp_paddr_change sn_paddr_change; |
643 | struct sctp_remote_error sn_remote_error; |
644 | struct sctp_send_failed sn_send_failed; |
645 | struct sctp_shutdown_event sn_shutdown_event; |
646 | struct sctp_adaptation_event sn_adaptation_event; |
647 | struct sctp_pdapi_event sn_pdapi_event; |
648 | struct sctp_authkey_event sn_authkey_event; |
649 | struct sctp_sender_dry_event sn_sender_dry_event; |
650 | struct sctp_stream_reset_event sn_strreset_event; |
651 | struct sctp_assoc_reset_event sn_assocreset_event; |
652 | struct sctp_stream_change_event sn_strchange_event; |
653 | struct sctp_send_failed_event sn_send_failed_event; |
654 | }; |
655 | |
656 | /* Section 5.3.1 |
657 | * All standard values for sn_type flags are greater than 2^15. |
658 | * Values from 2^15 and down are reserved. |
659 | */ |
660 | |
661 | enum sctp_sn_type { |
662 | SCTP_SN_TYPE_BASE = (1<<15), |
663 | SCTP_DATA_IO_EVENT = SCTP_SN_TYPE_BASE, |
664 | #define SCTP_DATA_IO_EVENT SCTP_DATA_IO_EVENT |
665 | SCTP_ASSOC_CHANGE, |
666 | #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE |
667 | SCTP_PEER_ADDR_CHANGE, |
668 | #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE |
669 | SCTP_SEND_FAILED, |
670 | #define SCTP_SEND_FAILED SCTP_SEND_FAILED |
671 | SCTP_REMOTE_ERROR, |
672 | #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR |
673 | SCTP_SHUTDOWN_EVENT, |
674 | #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT |
675 | SCTP_PARTIAL_DELIVERY_EVENT, |
676 | #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT |
677 | SCTP_ADAPTATION_INDICATION, |
678 | #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION |
679 | SCTP_AUTHENTICATION_EVENT, |
680 | #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT |
681 | SCTP_SENDER_DRY_EVENT, |
682 | #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT |
683 | SCTP_STREAM_RESET_EVENT, |
684 | #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT |
685 | SCTP_ASSOC_RESET_EVENT, |
686 | #define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT |
687 | SCTP_STREAM_CHANGE_EVENT, |
688 | #define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT |
689 | SCTP_SEND_FAILED_EVENT, |
690 | #define SCTP_SEND_FAILED_EVENT SCTP_SEND_FAILED_EVENT |
691 | SCTP_SN_TYPE_MAX = SCTP_SEND_FAILED_EVENT, |
692 | #define SCTP_SN_TYPE_MAX SCTP_SN_TYPE_MAX |
693 | }; |
694 | |
695 | /* Notification error codes used to fill up the error fields in some |
696 | * notifications. |
697 | * SCTP_PEER_ADDRESS_CHAGE : spc_error |
698 | * SCTP_ASSOC_CHANGE : sac_error |
699 | * These names should be potentially included in the draft 04 of the SCTP |
700 | * sockets API specification. |
701 | */ |
702 | typedef enum sctp_sn_error { |
703 | SCTP_FAILED_THRESHOLD, |
704 | SCTP_RECEIVED_SACK, |
705 | SCTP_HEARTBEAT_SUCCESS, |
706 | SCTP_RESPONSE_TO_USER_REQ, |
707 | SCTP_INTERNAL_ERROR, |
708 | SCTP_SHUTDOWN_GUARD_EXPIRES, |
709 | SCTP_PEER_FAULTY, |
710 | } sctp_sn_error_t; |
711 | |
712 | /* |
713 | * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO) |
714 | * |
715 | * The protocol parameters used to initialize and bound retransmission |
716 | * timeout (RTO) are tunable. See [SCTP] for more information on how |
717 | * these parameters are used in RTO calculation. |
718 | */ |
719 | struct sctp_rtoinfo { |
720 | sctp_assoc_t srto_assoc_id; |
721 | __u32 srto_initial; |
722 | __u32 srto_max; |
723 | __u32 srto_min; |
724 | }; |
725 | |
726 | /* |
727 | * 7.1.2 Association Parameters (SCTP_ASSOCINFO) |
728 | * |
729 | * This option is used to both examine and set various association and |
730 | * endpoint parameters. |
731 | */ |
732 | struct sctp_assocparams { |
733 | sctp_assoc_t sasoc_assoc_id; |
734 | __u16 sasoc_asocmaxrxt; |
735 | __u16 sasoc_number_peer_destinations; |
736 | __u32 sasoc_peer_rwnd; |
737 | __u32 sasoc_local_rwnd; |
738 | __u32 sasoc_cookie_life; |
739 | }; |
740 | |
741 | /* |
742 | * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR) |
743 | * |
744 | * Requests that the peer mark the enclosed address as the association |
745 | * primary. The enclosed address must be one of the association's |
746 | * locally bound addresses. The following structure is used to make a |
747 | * set primary request: |
748 | */ |
749 | struct sctp_setpeerprim { |
750 | sctp_assoc_t sspp_assoc_id; |
751 | struct sockaddr_storage sspp_addr; |
752 | } __attribute__((packed, aligned(4))); |
753 | |
754 | /* |
755 | * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR) |
756 | * |
757 | * Requests that the local SCTP stack use the enclosed peer address as |
758 | * the association primary. The enclosed address must be one of the |
759 | * association peer's addresses. The following structure is used to |
760 | * make a set peer primary request: |
761 | */ |
762 | struct sctp_prim { |
763 | sctp_assoc_t ssp_assoc_id; |
764 | struct sockaddr_storage ssp_addr; |
765 | } __attribute__((packed, aligned(4))); |
766 | |
767 | /* For backward compatibility use, define the old name too */ |
768 | #define sctp_setprim sctp_prim |
769 | |
770 | /* |
771 | * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER) |
772 | * |
773 | * Requests that the local endpoint set the specified Adaptation Layer |
774 | * Indication parameter for all future INIT and INIT-ACK exchanges. |
775 | */ |
776 | struct sctp_setadaptation { |
777 | __u32 ssb_adaptation_ind; |
778 | }; |
779 | |
780 | /* |
781 | * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS) |
782 | * |
783 | * Applications can enable or disable heartbeats for any peer address |
784 | * of an association, modify an address's heartbeat interval, force a |
785 | * heartbeat to be sent immediately, and adjust the address's maximum |
786 | * number of retransmissions sent before an address is considered |
787 | * unreachable. The following structure is used to access and modify an |
788 | * address's parameters: |
789 | */ |
790 | enum sctp_spp_flags { |
791 | SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/ |
792 | SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/ |
793 | SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE, |
794 | SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/ |
795 | SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/ |
796 | SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/ |
797 | SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE, |
798 | SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/ |
799 | SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/ |
800 | SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE, |
801 | SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */ |
802 | SPP_IPV6_FLOWLABEL = 1<<8, |
803 | SPP_DSCP = 1<<9, |
804 | }; |
805 | |
806 | struct sctp_paddrparams { |
807 | sctp_assoc_t spp_assoc_id; |
808 | struct sockaddr_storage spp_address; |
809 | __u32 spp_hbinterval; |
810 | __u16 spp_pathmaxrxt; |
811 | __u32 spp_pathmtu; |
812 | __u32 spp_sackdelay; |
813 | __u32 spp_flags; |
814 | __u32 spp_ipv6_flowlabel; |
815 | __u8 spp_dscp; |
816 | } __attribute__((packed, aligned(4))); |
817 | |
818 | /* |
819 | * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK) |
820 | * |
821 | * This set option adds a chunk type that the user is requesting to be |
822 | * received only in an authenticated way. Changes to the list of chunks |
823 | * will only effect future associations on the socket. |
824 | */ |
825 | struct sctp_authchunk { |
826 | __u8 sauth_chunk; |
827 | }; |
828 | |
829 | /* |
830 | * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT) |
831 | * |
832 | * This option gets or sets the list of HMAC algorithms that the local |
833 | * endpoint requires the peer to use. |
834 | */ |
835 | #ifndef __KERNEL__ |
836 | /* This here is only used by user space as is. It might not be a good idea |
837 | * to export/reveal the whole structure with reserved fields etc. |
838 | */ |
839 | enum { |
840 | SCTP_AUTH_HMAC_ID_SHA1 = 1, |
841 | SCTP_AUTH_HMAC_ID_SHA256 = 3, |
842 | }; |
843 | #endif |
844 | |
845 | struct sctp_hmacalgo { |
846 | __u32 shmac_num_idents; |
847 | __u16 shmac_idents[]; |
848 | }; |
849 | |
850 | /* Sadly, user and kernel space have different names for |
851 | * this structure member, so this is to not break anything. |
852 | */ |
853 | #define shmac_number_of_idents shmac_num_idents |
854 | |
855 | /* |
856 | * 7.1.20. Set a shared key (SCTP_AUTH_KEY) |
857 | * |
858 | * This option will set a shared secret key which is used to build an |
859 | * association shared key. |
860 | */ |
861 | struct sctp_authkey { |
862 | sctp_assoc_t sca_assoc_id; |
863 | __u16 sca_keynumber; |
864 | __u16 sca_keylength; |
865 | __u8 sca_key[]; |
866 | }; |
867 | |
868 | /* |
869 | * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY) |
870 | * |
871 | * This option will get or set the active shared key to be used to build |
872 | * the association shared key. |
873 | */ |
874 | |
875 | struct sctp_authkeyid { |
876 | sctp_assoc_t scact_assoc_id; |
877 | __u16 scact_keynumber; |
878 | }; |
879 | |
880 | |
881 | /* |
882 | * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK) |
883 | * |
884 | * This option will effect the way delayed acks are performed. This |
885 | * option allows you to get or set the delayed ack time, in |
886 | * milliseconds. It also allows changing the delayed ack frequency. |
887 | * Changing the frequency to 1 disables the delayed sack algorithm. If |
888 | * the assoc_id is 0, then this sets or gets the endpoints default |
889 | * values. If the assoc_id field is non-zero, then the set or get |
890 | * effects the specified association for the one to many model (the |
891 | * assoc_id field is ignored by the one to one model). Note that if |
892 | * sack_delay or sack_freq are 0 when setting this option, then the |
893 | * current values will remain unchanged. |
894 | */ |
895 | struct sctp_sack_info { |
896 | sctp_assoc_t sack_assoc_id; |
897 | uint32_t sack_delay; |
898 | uint32_t sack_freq; |
899 | }; |
900 | |
901 | struct sctp_assoc_value { |
902 | sctp_assoc_t assoc_id; |
903 | uint32_t assoc_value; |
904 | }; |
905 | |
906 | struct sctp_stream_value { |
907 | sctp_assoc_t assoc_id; |
908 | uint16_t stream_id; |
909 | uint16_t stream_value; |
910 | }; |
911 | |
912 | /* |
913 | * 7.2.2 Peer Address Information |
914 | * |
915 | * Applications can retrieve information about a specific peer address |
916 | * of an association, including its reachability state, congestion |
917 | * window, and retransmission timer values. This information is |
918 | * read-only. The following structure is used to access this |
919 | * information: |
920 | */ |
921 | struct sctp_paddrinfo { |
922 | sctp_assoc_t spinfo_assoc_id; |
923 | struct sockaddr_storage spinfo_address; |
924 | __s32 spinfo_state; |
925 | __u32 spinfo_cwnd; |
926 | __u32 spinfo_srtt; |
927 | __u32 spinfo_rto; |
928 | __u32 spinfo_mtu; |
929 | } __attribute__((packed, aligned(4))); |
930 | |
931 | /* Peer addresses's state. */ |
932 | /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x] |
933 | * calls. |
934 | * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters. |
935 | * Not yet confirmed by a heartbeat and not available for data |
936 | * transfers. |
937 | * ACTIVE : Peer address confirmed, active and available for data transfers. |
938 | * INACTIVE: Peer address inactive and not available for data transfers. |
939 | */ |
940 | enum sctp_spinfo_state { |
941 | SCTP_INACTIVE, |
942 | SCTP_PF, |
943 | #define SCTP_POTENTIALLY_FAILED SCTP_PF |
944 | SCTP_ACTIVE, |
945 | SCTP_UNCONFIRMED, |
946 | SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */ |
947 | }; |
948 | |
949 | /* |
950 | * 7.2.1 Association Status (SCTP_STATUS) |
951 | * |
952 | * Applications can retrieve current status information about an |
953 | * association, including association state, peer receiver window size, |
954 | * number of unacked data chunks, and number of data chunks pending |
955 | * receipt. This information is read-only. The following structure is |
956 | * used to access this information: |
957 | */ |
958 | struct sctp_status { |
959 | sctp_assoc_t sstat_assoc_id; |
960 | __s32 sstat_state; |
961 | __u32 sstat_rwnd; |
962 | __u16 sstat_unackdata; |
963 | __u16 sstat_penddata; |
964 | __u16 sstat_instrms; |
965 | __u16 sstat_outstrms; |
966 | __u32 sstat_fragmentation_point; |
967 | struct sctp_paddrinfo sstat_primary; |
968 | }; |
969 | |
970 | /* |
971 | * 7.2.3. Get the list of chunks the peer requires to be authenticated |
972 | * (SCTP_PEER_AUTH_CHUNKS) |
973 | * |
974 | * This option gets a list of chunks for a specified association that |
975 | * the peer requires to be received authenticated only. |
976 | */ |
977 | struct sctp_authchunks { |
978 | sctp_assoc_t gauth_assoc_id; |
979 | __u32 gauth_number_of_chunks; |
980 | uint8_t gauth_chunks[]; |
981 | }; |
982 | |
983 | /* The broken spelling has been released already in lksctp-tools header, |
984 | * so don't break anyone, now that it's fixed. |
985 | */ |
986 | #define guth_number_of_chunks gauth_number_of_chunks |
987 | |
988 | /* Association states. */ |
989 | enum sctp_sstat_state { |
990 | SCTP_EMPTY = 0, |
991 | SCTP_CLOSED = 1, |
992 | SCTP_COOKIE_WAIT = 2, |
993 | SCTP_COOKIE_ECHOED = 3, |
994 | SCTP_ESTABLISHED = 4, |
995 | SCTP_SHUTDOWN_PENDING = 5, |
996 | SCTP_SHUTDOWN_SENT = 6, |
997 | SCTP_SHUTDOWN_RECEIVED = 7, |
998 | SCTP_SHUTDOWN_ACK_SENT = 8, |
999 | }; |
1000 | |
1001 | /* |
1002 | * 8.2.6. Get the Current Identifiers of Associations |
1003 | * (SCTP_GET_ASSOC_ID_LIST) |
1004 | * |
1005 | * This option gets the current list of SCTP association identifiers of |
1006 | * the SCTP associations handled by a one-to-many style socket. |
1007 | */ |
1008 | struct sctp_assoc_ids { |
1009 | __u32 gaids_number_of_ids; |
1010 | sctp_assoc_t gaids_assoc_id[]; |
1011 | }; |
1012 | |
1013 | /* |
1014 | * 8.3, 8.5 get all peer/local addresses in an association. |
1015 | * This parameter struct is used by SCTP_GET_PEER_ADDRS and |
1016 | * SCTP_GET_LOCAL_ADDRS socket options used internally to implement |
1017 | * sctp_getpaddrs() and sctp_getladdrs() API. |
1018 | */ |
1019 | struct sctp_getaddrs_old { |
1020 | sctp_assoc_t assoc_id; |
1021 | int addr_num; |
1022 | #ifdef __KERNEL__ |
1023 | struct sockaddr __user *addrs; |
1024 | #else |
1025 | struct sockaddr *addrs; |
1026 | #endif |
1027 | }; |
1028 | |
1029 | struct sctp_getaddrs { |
1030 | sctp_assoc_t assoc_id; /*input*/ |
1031 | __u32 addr_num; /*output*/ |
1032 | __u8 addrs[]; /*output, variable size*/ |
1033 | }; |
1034 | |
1035 | /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves |
1036 | * association stats. All stats are counts except sas_maxrto and |
1037 | * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since |
1038 | * the last call. Will return 0 when RTO was not update since last call |
1039 | */ |
1040 | struct sctp_assoc_stats { |
1041 | sctp_assoc_t sas_assoc_id; /* Input */ |
1042 | /* Transport of observed max RTO */ |
1043 | struct sockaddr_storage sas_obs_rto_ipaddr; |
1044 | __u64 sas_maxrto; /* Maximum Observed RTO for period */ |
1045 | __u64 sas_isacks; /* SACKs received */ |
1046 | __u64 sas_osacks; /* SACKs sent */ |
1047 | __u64 sas_opackets; /* Packets sent */ |
1048 | __u64 sas_ipackets; /* Packets received */ |
1049 | __u64 sas_rtxchunks; /* Retransmitted Chunks */ |
1050 | __u64 sas_outofseqtsns;/* TSN received > next expected */ |
1051 | __u64 sas_idupchunks; /* Dups received (ordered+unordered) */ |
1052 | __u64 sas_gapcnt; /* Gap Acknowledgements Received */ |
1053 | __u64 sas_ouodchunks; /* Unordered data chunks sent */ |
1054 | __u64 sas_iuodchunks; /* Unordered data chunks received */ |
1055 | __u64 sas_oodchunks; /* Ordered data chunks sent */ |
1056 | __u64 sas_iodchunks; /* Ordered data chunks received */ |
1057 | __u64 sas_octrlchunks; /* Control chunks sent */ |
1058 | __u64 sas_ictrlchunks; /* Control chunks received */ |
1059 | }; |
1060 | |
1061 | /* |
1062 | * 8.1 sctp_bindx() |
1063 | * |
1064 | * The flags parameter is formed from the bitwise OR of zero or more of the |
1065 | * following currently defined flags: |
1066 | */ |
1067 | #define SCTP_BINDX_ADD_ADDR 0x01 |
1068 | #define SCTP_BINDX_REM_ADDR 0x02 |
1069 | |
1070 | /* This is the structure that is passed as an argument(optval) to |
1071 | * getsockopt(SCTP_SOCKOPT_PEELOFF). |
1072 | */ |
1073 | typedef struct { |
1074 | sctp_assoc_t associd; |
1075 | int sd; |
1076 | } sctp_peeloff_arg_t; |
1077 | |
1078 | typedef struct { |
1079 | sctp_peeloff_arg_t p_arg; |
1080 | unsigned flags; |
1081 | } sctp_peeloff_flags_arg_t; |
1082 | |
1083 | /* |
1084 | * Peer Address Thresholds socket option |
1085 | */ |
1086 | struct sctp_paddrthlds { |
1087 | sctp_assoc_t spt_assoc_id; |
1088 | struct sockaddr_storage spt_address; |
1089 | __u16 spt_pathmaxrxt; |
1090 | __u16 spt_pathpfthld; |
1091 | }; |
1092 | |
1093 | /* Use a new structure with spt_pathcpthld for back compatibility */ |
1094 | struct sctp_paddrthlds_v2 { |
1095 | sctp_assoc_t spt_assoc_id; |
1096 | struct sockaddr_storage spt_address; |
1097 | __u16 spt_pathmaxrxt; |
1098 | __u16 spt_pathpfthld; |
1099 | __u16 spt_pathcpthld; |
1100 | }; |
1101 | |
1102 | /* |
1103 | * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status |
1104 | */ |
1105 | struct sctp_prstatus { |
1106 | sctp_assoc_t sprstat_assoc_id; |
1107 | __u16 sprstat_sid; |
1108 | __u16 sprstat_policy; |
1109 | __u64 sprstat_abandoned_unsent; |
1110 | __u64 sprstat_abandoned_sent; |
1111 | }; |
1112 | |
1113 | struct sctp_default_prinfo { |
1114 | sctp_assoc_t pr_assoc_id; |
1115 | __u32 pr_value; |
1116 | __u16 pr_policy; |
1117 | }; |
1118 | |
1119 | struct sctp_info { |
1120 | __u32 sctpi_tag; |
1121 | __u32 sctpi_state; |
1122 | __u32 sctpi_rwnd; |
1123 | __u16 sctpi_unackdata; |
1124 | __u16 sctpi_penddata; |
1125 | __u16 sctpi_instrms; |
1126 | __u16 sctpi_outstrms; |
1127 | __u32 sctpi_fragmentation_point; |
1128 | __u32 sctpi_inqueue; |
1129 | __u32 sctpi_outqueue; |
1130 | __u32 sctpi_overall_error; |
1131 | __u32 sctpi_max_burst; |
1132 | __u32 sctpi_maxseg; |
1133 | __u32 sctpi_peer_rwnd; |
1134 | __u32 sctpi_peer_tag; |
1135 | __u8 sctpi_peer_capable; |
1136 | __u8 sctpi_peer_sack; |
1137 | __u16 __reserved1; |
1138 | |
1139 | /* assoc status info */ |
1140 | __u64 sctpi_isacks; |
1141 | __u64 sctpi_osacks; |
1142 | __u64 sctpi_opackets; |
1143 | __u64 sctpi_ipackets; |
1144 | __u64 sctpi_rtxchunks; |
1145 | __u64 sctpi_outofseqtsns; |
1146 | __u64 sctpi_idupchunks; |
1147 | __u64 sctpi_gapcnt; |
1148 | __u64 sctpi_ouodchunks; |
1149 | __u64 sctpi_iuodchunks; |
1150 | __u64 sctpi_oodchunks; |
1151 | __u64 sctpi_iodchunks; |
1152 | __u64 sctpi_octrlchunks; |
1153 | __u64 sctpi_ictrlchunks; |
1154 | |
1155 | /* primary transport info */ |
1156 | struct sockaddr_storage sctpi_p_address; |
1157 | __s32 sctpi_p_state; |
1158 | __u32 sctpi_p_cwnd; |
1159 | __u32 sctpi_p_srtt; |
1160 | __u32 sctpi_p_rto; |
1161 | __u32 sctpi_p_hbinterval; |
1162 | __u32 sctpi_p_pathmaxrxt; |
1163 | __u32 sctpi_p_sackdelay; |
1164 | __u32 sctpi_p_sackfreq; |
1165 | __u32 sctpi_p_ssthresh; |
1166 | __u32 sctpi_p_partial_bytes_acked; |
1167 | __u32 sctpi_p_flight_size; |
1168 | __u16 sctpi_p_error; |
1169 | __u16 __reserved2; |
1170 | |
1171 | /* sctp sock info */ |
1172 | __u32 sctpi_s_autoclose; |
1173 | __u32 sctpi_s_adaptation_ind; |
1174 | __u32 sctpi_s_pd_point; |
1175 | __u8 sctpi_s_nodelay; |
1176 | __u8 sctpi_s_disable_fragments; |
1177 | __u8 sctpi_s_v4mapped; |
1178 | __u8 sctpi_s_frag_interleave; |
1179 | __u32 sctpi_s_type; |
1180 | __u32 __reserved3; |
1181 | }; |
1182 | |
1183 | struct sctp_reset_streams { |
1184 | sctp_assoc_t srs_assoc_id; |
1185 | uint16_t srs_flags; |
1186 | uint16_t srs_number_streams; /* 0 == ALL */ |
1187 | uint16_t srs_stream_list[]; /* list if srs_num_streams is not 0 */ |
1188 | }; |
1189 | |
1190 | struct sctp_add_streams { |
1191 | sctp_assoc_t sas_assoc_id; |
1192 | uint16_t sas_instrms; |
1193 | uint16_t sas_outstrms; |
1194 | }; |
1195 | |
1196 | struct sctp_event { |
1197 | sctp_assoc_t se_assoc_id; |
1198 | uint16_t se_type; |
1199 | uint8_t se_on; |
1200 | }; |
1201 | |
1202 | struct sctp_udpencaps { |
1203 | sctp_assoc_t sue_assoc_id; |
1204 | struct sockaddr_storage sue_address; |
1205 | uint16_t sue_port; |
1206 | }; |
1207 | |
1208 | /* SCTP Stream schedulers */ |
1209 | enum sctp_sched_type { |
1210 | SCTP_SS_FCFS, |
1211 | SCTP_SS_DEFAULT = SCTP_SS_FCFS, |
1212 | SCTP_SS_PRIO, |
1213 | SCTP_SS_RR, |
1214 | SCTP_SS_FC, |
1215 | SCTP_SS_WFQ, |
1216 | SCTP_SS_MAX = SCTP_SS_WFQ |
1217 | }; |
1218 | |
1219 | /* Probe Interval socket option */ |
1220 | struct sctp_probeinterval { |
1221 | sctp_assoc_t spi_assoc_id; |
1222 | struct sockaddr_storage spi_address; |
1223 | __u32 spi_interval; |
1224 | }; |
1225 | |
1226 | #endif /* _UAPI_SCTP_H */ |
1227 | |