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1 /*-
2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * a) Redistributions of source code must retain the above copyright notice,
10  *    this list of conditions and the following disclaimer.
11  *
12  * b) Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in
14  *    the documentation and/or other materials provided with the distribution.
15  *
16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
17  *    contributors may be used to endorse or promote products derived
18  *    from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #ifdef __FreeBSD__
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_uio.h 269945 2014-08-13 15:50:16Z tuexen $");
36 #endif
37 
38 #ifndef _NETINET_SCTP_UIO_H_
39 #define _NETINET_SCTP_UIO_H_
40 
41 #if (defined(__APPLE__) && defined(KERNEL))
42 #ifndef _KERNEL
43 #define _KERNEL
44 #endif
45 #endif
46 
47 #if !(defined(__Windows__)) && !defined(__Userspace_os_Windows)
48 #if ! defined(_KERNEL)
49 #include <stdint.h>
50 #endif
51 #include <sys/types.h>
52 #include <sys/socket.h>
53 #include <netinet/in.h>
54 #endif
55 #if defined(__Windows__)
56 #pragma warning(push)
57 #pragma warning(disable: 4200)
58 #if defined(_KERNEL)
59 #include <sys/types.h>
60 #include <sys/socket.h>
61 #include <netinet/in.h>
62 #endif
63 #endif
64 
65 typedef uint32_t sctp_assoc_t;
66 
67 #define SCTP_FUTURE_ASSOC  0
68 #define SCTP_CURRENT_ASSOC 1
69 #define SCTP_ALL_ASSOC     2
70 
71 struct sctp_event {
72 	sctp_assoc_t se_assoc_id;
73 	uint16_t     se_type;
74 	uint8_t      se_on;
75 };
76 
77 /* Compatibility to previous define's */
78 #define sctp_stream_reset_events sctp_stream_reset_event
79 
80 /* On/Off setup for subscription to events */
81 struct sctp_event_subscribe {
82 	uint8_t sctp_data_io_event;
83 	uint8_t sctp_association_event;
84 	uint8_t sctp_address_event;
85 	uint8_t sctp_send_failure_event;
86 	uint8_t sctp_peer_error_event;
87 	uint8_t sctp_shutdown_event;
88 	uint8_t sctp_partial_delivery_event;
89 	uint8_t sctp_adaptation_layer_event;
90 	uint8_t sctp_authentication_event;
91 	uint8_t sctp_sender_dry_event;
92 	uint8_t sctp_stream_reset_event;
93 };
94 
95 /* ancillary data types */
96 #define SCTP_INIT	0x0001
97 #define SCTP_SNDRCV	0x0002
98 #define SCTP_EXTRCV	0x0003
99 #define SCTP_SNDINFO    0x0004
100 #define SCTP_RCVINFO    0x0005
101 #define SCTP_NXTINFO    0x0006
102 #define SCTP_PRINFO     0x0007
103 #define SCTP_AUTHINFO   0x0008
104 #define SCTP_DSTADDRV4  0x0009
105 #define SCTP_DSTADDRV6  0x000a
106 
107 /*
108  * ancillary data structures
109  */
110 struct sctp_initmsg {
111 #if defined(__FreeBSD__) && __FreeBSD_version < 800000
112 	/* This is a bug. Not fixed for ABI compatibility */
113 	uint32_t sinit_num_ostreams;
114 	uint32_t sinit_max_instreams;
115 #else
116 	uint16_t sinit_num_ostreams;
117 	uint16_t sinit_max_instreams;
118 #endif
119 	uint16_t sinit_max_attempts;
120 	uint16_t sinit_max_init_timeo;
121 };
122 
123 /* We add 96 bytes to the size of sctp_sndrcvinfo.
124  * This makes the current structure 128 bytes long
125  * which is nicely 64 bit aligned but also has room
126  * for us to add more and keep ABI compatibility.
127  * For example, already we have the sctp_extrcvinfo
128  * when enabled which is 48 bytes.
129  */
130 
131 /*
132  * The assoc up needs a verfid
133  * all sendrcvinfo's need a verfid for SENDING only.
134  */
135 
136 
137 #define SCTP_ALIGN_RESV_PAD 92
138 #define SCTP_ALIGN_RESV_PAD_SHORT 76
139 
140 struct sctp_sndrcvinfo {
141 	uint16_t sinfo_stream;
142 	uint16_t sinfo_ssn;
143 	uint16_t sinfo_flags;
144 #if defined(__FreeBSD__) && __FreeBSD_version < 800000
145 	uint16_t sinfo_pr_policy;
146 #endif
147 	uint32_t sinfo_ppid;
148 	uint32_t sinfo_context;
149 	uint32_t sinfo_timetolive;
150 	uint32_t sinfo_tsn;
151 	uint32_t sinfo_cumtsn;
152 	sctp_assoc_t sinfo_assoc_id;
153 	uint16_t sinfo_keynumber;
154 	uint16_t sinfo_keynumber_valid;
155 	uint8_t  __reserve_pad[SCTP_ALIGN_RESV_PAD];
156 };
157 
158 struct sctp_extrcvinfo {
159 	uint16_t sinfo_stream;
160 	uint16_t sinfo_ssn;
161 	uint16_t sinfo_flags;
162 #if defined(__FreeBSD__) && __FreeBSD_version < 800000
163 	uint16_t sinfo_pr_policy;
164 #endif
165 	uint32_t sinfo_ppid;
166 	uint32_t sinfo_context;
167 	uint32_t sinfo_timetolive;
168 	uint32_t sinfo_tsn;
169 	uint32_t sinfo_cumtsn;
170 	sctp_assoc_t sinfo_assoc_id;
171 	uint16_t sreinfo_next_flags;
172 	uint16_t sreinfo_next_stream;
173 	uint32_t sreinfo_next_aid;
174 	uint32_t sreinfo_next_length;
175 	uint32_t sreinfo_next_ppid;
176 	uint16_t sinfo_keynumber;
177 	uint16_t sinfo_keynumber_valid;
178 	uint8_t  __reserve_pad[SCTP_ALIGN_RESV_PAD_SHORT];
179 };
180 
181 struct sctp_sndinfo {
182 	uint16_t snd_sid;
183 	uint16_t snd_flags;
184 	uint32_t snd_ppid;
185 	uint32_t snd_context;
186 	sctp_assoc_t snd_assoc_id;
187 };
188 
189 struct sctp_prinfo {
190 	uint16_t pr_policy;
191 	uint32_t pr_value;
192 };
193 
194 struct sctp_default_prinfo {
195 	uint16_t pr_policy;
196 	uint32_t pr_value;
197 	sctp_assoc_t pr_assoc_id;
198 };
199 
200 struct sctp_authinfo {
201 	uint16_t auth_keynumber;
202 };
203 
204 struct sctp_rcvinfo {
205 	uint16_t rcv_sid;
206 	uint16_t rcv_ssn;
207 	uint16_t rcv_flags;
208 	uint32_t rcv_ppid;
209 	uint32_t rcv_tsn;
210 	uint32_t rcv_cumtsn;
211 	uint32_t rcv_context;
212 	sctp_assoc_t rcv_assoc_id;
213 };
214 
215 struct sctp_nxtinfo {
216 	uint16_t nxt_sid;
217 	uint16_t nxt_flags;
218 	uint32_t nxt_ppid;
219 	uint32_t nxt_length;
220 	sctp_assoc_t nxt_assoc_id;
221 };
222 
223 #define SCTP_NO_NEXT_MSG           0x0000
224 #define SCTP_NEXT_MSG_AVAIL        0x0001
225 #define SCTP_NEXT_MSG_ISCOMPLETE   0x0002
226 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
227 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
228 
229 struct sctp_recvv_rn {
230 	struct sctp_rcvinfo recvv_rcvinfo;
231 	struct sctp_nxtinfo recvv_nxtinfo;
232 };
233 
234 #define SCTP_RECVV_NOINFO  0
235 #define SCTP_RECVV_RCVINFO 1
236 #define SCTP_RECVV_NXTINFO 2
237 #define SCTP_RECVV_RN      3
238 
239 #define SCTP_SENDV_NOINFO   0
240 #define SCTP_SENDV_SNDINFO  1
241 #define SCTP_SENDV_PRINFO   2
242 #define SCTP_SENDV_AUTHINFO 3
243 #define SCTP_SENDV_SPA      4
244 
245 struct sctp_sendv_spa {
246 	uint32_t sendv_flags;
247 	struct sctp_sndinfo sendv_sndinfo;
248 	struct sctp_prinfo sendv_prinfo;
249 	struct sctp_authinfo sendv_authinfo;
250 };
251 
252 #define SCTP_SEND_SNDINFO_VALID  0x00000001
253 #define SCTP_SEND_PRINFO_VALID   0x00000002
254 #define SCTP_SEND_AUTHINFO_VALID 0x00000004
255 
256 struct sctp_snd_all_completes {
257 	uint16_t sall_stream;
258 	uint16_t sall_flags;
259 	uint32_t sall_ppid;
260 	uint32_t sall_context;
261 	uint32_t sall_num_sent;
262 	uint32_t sall_num_failed;
263 };
264 
265 /* Flags that go into the sinfo->sinfo_flags field */
266 #define SCTP_NOTIFICATION     0x0010 /* next message is a notification */
267 #define SCTP_COMPLETE         0x0020 /* next message is complete */
268 #define SCTP_EOF              0x0100 /* Start shutdown procedures */
269 #define SCTP_ABORT            0x0200 /* Send an ABORT to peer */
270 #define SCTP_UNORDERED        0x0400 /* Message is un-ordered */
271 #define SCTP_ADDR_OVER        0x0800 /* Override the primary-address */
272 #define SCTP_SENDALL          0x1000 /* Send this on all associations */
273 #define SCTP_EOR              0x2000 /* end of message signal */
274 #define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */
275 
276 #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
277                                     & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
278 				        SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
279 					SCTP_SACK_IMMEDIATELY)) != 0)
280 /* for the endpoint */
281 
282 /* The lower four bits is an enumeration of PR-SCTP policies */
283 #define SCTP_PR_SCTP_NONE 0x0000 /* Reliable transfer */
284 #define SCTP_PR_SCTP_TTL  0x0001 /* Time based PR-SCTP */
285 #define SCTP_PR_SCTP_BUF  0x0002 /* Buffer based PR-SCTP */
286 #define SCTP_PR_SCTP_RTX  0x0003 /* Number of retransmissions based PR-SCTP */
287 #define SCTP_PR_SCTP_MAX  SCTP_PR_SCTP_RTX
288 #define SCTP_PR_SCTP_ALL  0x000f /* Used for aggregated stats */
289 
290 #define PR_SCTP_POLICY(x)         ((x) & 0x0f)
291 #define PR_SCTP_ENABLED(x)        ((PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE) && \
292                                    (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_ALL))
293 #define PR_SCTP_TTL_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
294 #define PR_SCTP_BUF_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
295 #define PR_SCTP_RTX_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
296 #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_MAX)
297 #define PR_SCTP_VALID_POLICY(x)   (PR_SCTP_POLICY(x) <= SCTP_PR_SCTP_MAX)
298 
299 /* Stat's */
300 struct sctp_pcbinfo {
301 	uint32_t ep_count;
302 	uint32_t asoc_count;
303 	uint32_t laddr_count;
304 	uint32_t raddr_count;
305 	uint32_t chk_count;
306 	uint32_t readq_count;
307 	uint32_t free_chunks;
308 	uint32_t stream_oque;
309 };
310 
311 struct sctp_sockstat {
312 	sctp_assoc_t ss_assoc_id;
313 	uint32_t ss_total_sndbuf;
314 	uint32_t ss_total_recv_buf;
315 };
316 
317 /*
318  * notification event structures
319  */
320 
321 /*
322  * association change event
323  */
324 struct sctp_assoc_change {
325 	uint16_t sac_type;
326 	uint16_t sac_flags;
327 	uint32_t sac_length;
328 	uint16_t sac_state;
329 	uint16_t sac_error;
330 	uint16_t sac_outbound_streams;
331 	uint16_t sac_inbound_streams;
332 	sctp_assoc_t sac_assoc_id;
333 	uint8_t sac_info[];
334 };
335 
336 /* sac_state values */
337 #define SCTP_COMM_UP            0x0001
338 #define SCTP_COMM_LOST          0x0002
339 #define SCTP_RESTART            0x0003
340 #define SCTP_SHUTDOWN_COMP      0x0004
341 #define SCTP_CANT_STR_ASSOC     0x0005
342 
343 /* sac_info values */
344 #define SCTP_ASSOC_SUPPORTS_PR        0x01
345 #define SCTP_ASSOC_SUPPORTS_AUTH      0x02
346 #define SCTP_ASSOC_SUPPORTS_ASCONF    0x03
347 #define SCTP_ASSOC_SUPPORTS_MULTIBUF  0x04
348 #define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05
349 #define SCTP_ASSOC_SUPPORTS_MAX       0x05
350 /*
351  * Address event
352  */
353 struct sctp_paddr_change {
354 	uint16_t spc_type;
355 	uint16_t spc_flags;
356 	uint32_t spc_length;
357 	struct sockaddr_storage spc_aaddr;
358 	uint32_t spc_state;
359 	uint32_t spc_error;
360 	sctp_assoc_t spc_assoc_id;
361 };
362 
363 /* paddr state values */
364 #define SCTP_ADDR_AVAILABLE	0x0001
365 #define SCTP_ADDR_UNREACHABLE	0x0002
366 #define SCTP_ADDR_REMOVED	0x0003
367 #define SCTP_ADDR_ADDED		0x0004
368 #define SCTP_ADDR_MADE_PRIM	0x0005
369 #define SCTP_ADDR_CONFIRMED	0x0006
370 
371 #define SCTP_ACTIVE		0x0001	/* SCTP_ADDR_REACHABLE */
372 #define SCTP_INACTIVE		0x0002	/* neither SCTP_ADDR_REACHABLE
373 					   nor SCTP_ADDR_UNCONFIRMED */
374 #define SCTP_UNCONFIRMED	0x0200	/* SCTP_ADDR_UNCONFIRMED */
375 
376 /* remote error events */
377 struct sctp_remote_error {
378 	uint16_t sre_type;
379 	uint16_t sre_flags;
380 	uint32_t sre_length;
381 	uint16_t sre_error;
382 	sctp_assoc_t sre_assoc_id;
383 	uint8_t sre_data[];
384 };
385 
386 /* data send failure event (deprecated) */
387 struct sctp_send_failed {
388 	uint16_t ssf_type;
389 	uint16_t ssf_flags;
390 	uint32_t ssf_length;
391 	uint32_t ssf_error;
392 	struct sctp_sndrcvinfo ssf_info;
393 	sctp_assoc_t ssf_assoc_id;
394 	uint8_t ssf_data[];
395 };
396 
397 /* data send failure event (not deprecated) */
398 struct sctp_send_failed_event {
399 	uint16_t ssfe_type;
400 	uint16_t ssfe_flags;
401 	uint32_t ssfe_length;
402 	uint32_t ssfe_error;
403 	struct sctp_sndinfo ssfe_info;
404 	sctp_assoc_t ssfe_assoc_id;
405 	uint8_t  ssfe_data[];
406 };
407 
408 /* flag that indicates state of data */
409 #define SCTP_DATA_UNSENT	0x0001	/* inqueue never on wire */
410 #define SCTP_DATA_SENT		0x0002	/* on wire at failure */
411 
412 /* shutdown event */
413 struct sctp_shutdown_event {
414 	uint16_t sse_type;
415 	uint16_t sse_flags;
416 	uint32_t sse_length;
417 	sctp_assoc_t sse_assoc_id;
418 };
419 
420 /* Adaptation layer indication stuff */
421 struct sctp_adaptation_event {
422 	uint16_t sai_type;
423 	uint16_t sai_flags;
424 	uint32_t sai_length;
425 	uint32_t sai_adaptation_ind;
426 	sctp_assoc_t sai_assoc_id;
427 };
428 
429 struct sctp_setadaptation {
430 	uint32_t ssb_adaptation_ind;
431 };
432 
433 /* compatible old spelling */
434 struct sctp_adaption_event {
435 	uint16_t sai_type;
436 	uint16_t sai_flags;
437 	uint32_t sai_length;
438 	uint32_t sai_adaption_ind;
439 	sctp_assoc_t sai_assoc_id;
440 };
441 
442 struct sctp_setadaption {
443 	uint32_t ssb_adaption_ind;
444 };
445 
446 
447 /*
448  * Partial Delivery API event
449  */
450 struct sctp_pdapi_event {
451 	uint16_t pdapi_type;
452 	uint16_t pdapi_flags;
453 	uint32_t pdapi_length;
454 	uint32_t pdapi_indication;
455 	uint16_t pdapi_stream;
456 	uint16_t pdapi_seq;
457 	sctp_assoc_t pdapi_assoc_id;
458 };
459 
460 /* indication values */
461 #define SCTP_PARTIAL_DELIVERY_ABORTED	0x0001
462 
463 
464 /*
465  * authentication key event
466  */
467 struct sctp_authkey_event {
468 	uint16_t auth_type;
469 	uint16_t auth_flags;
470 	uint32_t auth_length;
471 	uint16_t auth_keynumber;
472 	uint16_t auth_altkeynumber;
473 	uint32_t auth_indication;
474 	sctp_assoc_t auth_assoc_id;
475 };
476 
477 /* indication values */
478 #define SCTP_AUTH_NEW_KEY	0x0001
479 #define SCTP_AUTH_NEWKEY	SCTP_AUTH_NEW_KEY
480 #define SCTP_AUTH_NO_AUTH	0x0002
481 #define SCTP_AUTH_FREE_KEY	0x0003
482 
483 
484 struct sctp_sender_dry_event {
485 	uint16_t sender_dry_type;
486 	uint16_t sender_dry_flags;
487 	uint32_t sender_dry_length;
488 	sctp_assoc_t sender_dry_assoc_id;
489 };
490 
491 
492 /*
493  * Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT
494  */
495 struct sctp_stream_reset_event {
496 	uint16_t strreset_type;
497 	uint16_t strreset_flags;
498 	uint32_t strreset_length;
499 	sctp_assoc_t strreset_assoc_id;
500 	uint16_t strreset_stream_list[];
501 };
502 
503 /* flags in stream_reset_event (strreset_flags) */
504 #define SCTP_STREAM_RESET_INCOMING_SSN  0x0001
505 #define SCTP_STREAM_RESET_OUTGOING_SSN  0x0002
506 #define SCTP_STREAM_RESET_DENIED        0x0004
507 #define SCTP_STREAM_RESET_FAILED        0x0008
508 
509 /*
510  * Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT
511  */
512 struct sctp_assoc_reset_event {
513 	uint16_t 	assocreset_type;
514 	uint16_t	assocreset_flags;
515 	uint32_t	assocreset_length;
516 	sctp_assoc_t	assocreset_assoc_id;
517 	uint32_t	assocreset_local_tsn;
518 	uint32_t	assocreset_remote_tsn;
519 };
520 
521 #define SCTP_ASSOC_RESET_DENIED		0x0004
522 #define SCTP_ASSOC_RESET_FAILED		0x0008
523 
524 /*
525  * Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT
526  */
527 struct sctp_stream_change_event {
528 	uint16_t	strchange_type;
529 	uint16_t	strchange_flags;
530 	uint32_t	strchange_length;
531 	sctp_assoc_t	strchange_assoc_id;
532 	uint16_t	strchange_instrms;
533 	uint16_t	strchange_outstrms;
534 };
535 
536 #define SCTP_STREAM_CHANGE_DENIED	0x0004
537 #define SCTP_STREAM_CHANGE_FAILED	0x0008
538 
539 
540 /* SCTP notification event */
541 struct sctp_tlv {
542 	uint16_t sn_type;
543 	uint16_t sn_flags;
544 	uint32_t sn_length;
545 };
546 
547 union sctp_notification {
548 	struct sctp_tlv sn_header;
549 	struct sctp_assoc_change sn_assoc_change;
550 	struct sctp_paddr_change sn_paddr_change;
551 	struct sctp_remote_error sn_remote_error;
552 	struct sctp_send_failed sn_send_failed;
553 	struct sctp_shutdown_event sn_shutdown_event;
554 	struct sctp_adaptation_event sn_adaptation_event;
555 	/* compatibility same as above */
556 	struct sctp_adaption_event sn_adaption_event;
557 	struct sctp_pdapi_event sn_pdapi_event;
558 	struct sctp_authkey_event sn_auth_event;
559 	struct sctp_sender_dry_event sn_sender_dry_event;
560 	struct sctp_send_failed_event sn_send_failed_event;
561 	struct sctp_stream_reset_event sn_strreset_event;
562 	struct sctp_assoc_reset_event  sn_assocreset_event;
563 	struct sctp_stream_change_event sn_strchange_event;
564 };
565 
566 /* notification types */
567 #define SCTP_ASSOC_CHANGE                       0x0001
568 #define SCTP_PEER_ADDR_CHANGE                   0x0002
569 #define SCTP_REMOTE_ERROR                       0x0003
570 #define SCTP_SEND_FAILED                        0x0004
571 #define SCTP_SHUTDOWN_EVENT                     0x0005
572 #define SCTP_ADAPTATION_INDICATION              0x0006
573 /* same as above */
574 #define SCTP_ADAPTION_INDICATION                0x0006
575 #define SCTP_PARTIAL_DELIVERY_EVENT             0x0007
576 #define SCTP_AUTHENTICATION_EVENT               0x0008
577 #define SCTP_STREAM_RESET_EVENT                 0x0009
578 #define SCTP_SENDER_DRY_EVENT                   0x000a
579 #define SCTP_NOTIFICATIONS_STOPPED_EVENT        0x000b /* we don't send this*/
580 #define SCTP_ASSOC_RESET_EVENT                  0x000c
581 #define SCTP_STREAM_CHANGE_EVENT                0x000d
582 #define SCTP_SEND_FAILED_EVENT                  0x000e
583 /*
584  * socket option structs
585  */
586 
587 struct sctp_paddrparams {
588 	struct sockaddr_storage spp_address;
589 	sctp_assoc_t spp_assoc_id;
590 	uint32_t spp_hbinterval;
591 	uint32_t spp_pathmtu;
592 	uint32_t spp_flags;
593 	uint32_t spp_ipv6_flowlabel;
594 	uint16_t spp_pathmaxrxt;
595 	uint8_t spp_dscp;
596 };
597 #define spp_ipv4_tos spp_dscp
598 
599 #define SPP_HB_ENABLE		0x00000001
600 #define SPP_HB_DISABLE		0x00000002
601 #define SPP_HB_DEMAND		0x00000004
602 #define SPP_PMTUD_ENABLE	0x00000008
603 #define SPP_PMTUD_DISABLE	0x00000010
604 #define SPP_HB_TIME_IS_ZERO     0x00000080
605 #define SPP_IPV6_FLOWLABEL      0x00000100
606 #define SPP_DSCP                0x00000200
607 #define SPP_IPV4_TOS            SPP_DSCP
608 
609 struct sctp_paddrthlds {
610 	struct sockaddr_storage spt_address;
611 	sctp_assoc_t spt_assoc_id;
612 	uint16_t spt_pathmaxrxt;
613 	uint16_t spt_pathpfthld;
614 };
615 
616 struct sctp_paddrinfo {
617 	struct sockaddr_storage spinfo_address;
618 	sctp_assoc_t spinfo_assoc_id;
619 	int32_t spinfo_state;
620 	uint32_t spinfo_cwnd;
621 	uint32_t spinfo_srtt;
622 	uint32_t spinfo_rto;
623 	uint32_t spinfo_mtu;
624 };
625 
626 struct sctp_rtoinfo {
627 	sctp_assoc_t srto_assoc_id;
628 	uint32_t srto_initial;
629 	uint32_t srto_max;
630 	uint32_t srto_min;
631 };
632 
633 struct sctp_assocparams {
634 	sctp_assoc_t sasoc_assoc_id;
635 	uint32_t sasoc_peer_rwnd;
636 	uint32_t sasoc_local_rwnd;
637 	uint32_t sasoc_cookie_life;
638 	uint16_t sasoc_asocmaxrxt;
639 	uint16_t sasoc_number_peer_destinations;
640 };
641 
642 struct sctp_setprim {
643 	struct sockaddr_storage ssp_addr;
644 	sctp_assoc_t ssp_assoc_id;
645 	uint8_t ssp_padding[4];
646 };
647 
648 struct sctp_setpeerprim {
649 	struct sockaddr_storage sspp_addr;
650 	sctp_assoc_t sspp_assoc_id;
651 	uint8_t sspp_padding[4];
652 };
653 
654 struct sctp_getaddresses {
655 	sctp_assoc_t sget_assoc_id;
656 	/* addr is filled in for N * sockaddr_storage */
657 	struct sockaddr addr[1];
658 };
659 
660 struct sctp_status {
661 	sctp_assoc_t sstat_assoc_id;
662 	int32_t sstat_state;
663 	uint32_t sstat_rwnd;
664 	uint16_t sstat_unackdata;
665 	uint16_t sstat_penddata;
666 	uint16_t sstat_instrms;
667 	uint16_t sstat_outstrms;
668 	uint32_t sstat_fragmentation_point;
669 	struct sctp_paddrinfo sstat_primary;
670 };
671 
672 /*
673  * AUTHENTICATION support
674  */
675 /* SCTP_AUTH_CHUNK */
676 struct sctp_authchunk {
677 	uint8_t sauth_chunk;
678 };
679 
680 /* SCTP_AUTH_KEY */
681 struct sctp_authkey {
682 	sctp_assoc_t sca_assoc_id;
683 	uint16_t sca_keynumber;
684 	uint16_t sca_keylength;
685 	uint8_t sca_key[];
686 };
687 
688 /* SCTP_HMAC_IDENT */
689 struct sctp_hmacalgo {
690 	uint32_t shmac_number_of_idents;
691 	uint16_t shmac_idents[];
692 };
693 
694 /* AUTH hmac_id */
695 #define SCTP_AUTH_HMAC_ID_RSVD		0x0000
696 #define SCTP_AUTH_HMAC_ID_SHA1		0x0001	/* default, mandatory */
697 #define SCTP_AUTH_HMAC_ID_SHA256	0x0003
698 
699 /* SCTP_AUTH_ACTIVE_KEY / SCTP_AUTH_DELETE_KEY */
700 struct sctp_authkeyid {
701 	sctp_assoc_t scact_assoc_id;
702 	uint16_t scact_keynumber;
703 };
704 
705 /* SCTP_PEER_AUTH_CHUNKS / SCTP_LOCAL_AUTH_CHUNKS */
706 struct sctp_authchunks {
707 	sctp_assoc_t gauth_assoc_id;
708 	uint32_t gauth_number_of_chunks;
709 	uint8_t gauth_chunks[];
710 };
711 
712 struct sctp_assoc_value {
713 	sctp_assoc_t assoc_id;
714 	uint32_t assoc_value;
715 };
716 
717 struct sctp_cc_option {
718 	int option;
719 	struct sctp_assoc_value aid_value;
720 };
721 
722 struct sctp_stream_value {
723 	sctp_assoc_t assoc_id;
724 	uint16_t stream_id;
725 	uint16_t stream_value;
726 };
727 
728 struct sctp_assoc_ids {
729 	uint32_t gaids_number_of_ids;
730 	sctp_assoc_t gaids_assoc_id[];
731 };
732 
733 struct sctp_sack_info {
734 	sctp_assoc_t sack_assoc_id;
735 	uint32_t sack_delay;
736 	uint32_t sack_freq;
737 };
738 
739 struct sctp_timeouts {
740 	sctp_assoc_t stimo_assoc_id;
741 	uint32_t stimo_init;
742 	uint32_t stimo_data;
743 	uint32_t stimo_sack;
744 	uint32_t stimo_shutdown;
745 	uint32_t stimo_heartbeat;
746 	uint32_t stimo_cookie;
747 	uint32_t stimo_shutdownack;
748 };
749 
750 struct sctp_udpencaps {
751 	struct sockaddr_storage sue_address;
752 	sctp_assoc_t sue_assoc_id;
753 	uint16_t sue_port;
754 };
755 
756 struct sctp_prstatus {
757 	sctp_assoc_t sprstat_assoc_id;
758 	uint16_t sprstat_sid;
759 	uint16_t sprstat_policy;
760 	uint64_t sprstat_abandoned_unsent;
761 	uint64_t sprstat_abandoned_sent;
762 };
763 
764 struct sctp_cwnd_args {
765 	struct sctp_nets *net;	/* network to */ /* FIXME: LP64 issue */
766 	uint32_t cwnd_new_value;/* cwnd in k */
767 	uint32_t pseudo_cumack;
768 	uint16_t inflight;	/* flightsize in k */
769 	uint16_t cwnd_augment;	/* increment to it */
770 	uint8_t meets_pseudo_cumack;
771 	uint8_t need_new_pseudo_cumack;
772 	uint8_t cnt_in_send;
773 	uint8_t cnt_in_str;
774 };
775 
776 struct sctp_blk_args {
777 	uint32_t onsb;		/* in 1k bytes */
778 	uint32_t sndlen;	/* len of send being attempted */
779 	uint32_t peer_rwnd;	/* rwnd of peer */
780 	uint16_t send_sent_qcnt;/* chnk cnt */
781 	uint16_t stream_qcnt;	/* chnk cnt */
782 	uint16_t chunks_on_oque;/* chunks out */
783 	uint16_t flight_size;   /* flight size in k */
784 };
785 
786 /*
787  * Max we can reset in one setting, note this is dictated not by the define
788  * but the size of a mbuf cluster so don't change this define and think you
789  * can specify more. You must do multiple resets if you want to reset more
790  * than SCTP_MAX_EXPLICIT_STR_RESET.
791  */
792 #define SCTP_MAX_EXPLICT_STR_RESET   1000
793 
794 struct sctp_reset_streams {
795 	sctp_assoc_t srs_assoc_id;
796 	uint16_t srs_flags;
797 	uint16_t srs_number_streams;	/* 0 == ALL */
798 	uint16_t srs_stream_list[];/* list if strrst_num_streams is not 0 */
799 };
800 
801 struct sctp_add_streams {
802 	sctp_assoc_t	sas_assoc_id;
803 	uint16_t	sas_instrms;
804 	uint16_t	sas_outstrms;
805 };
806 
807 struct sctp_get_nonce_values {
808 	sctp_assoc_t gn_assoc_id;
809 	uint32_t gn_peers_tag;
810 	uint32_t gn_local_tag;
811 };
812 
813 /* Debugging logs */
814 struct sctp_str_log {
815 	void *stcb; /* FIXME: LP64 issue */
816 	uint32_t n_tsn;
817 	uint32_t e_tsn;
818 	uint16_t n_sseq;
819 	uint16_t e_sseq;
820 	uint16_t strm;
821 };
822 
823 struct sctp_sb_log {
824 	void  *stcb; /* FIXME: LP64 issue */
825 	uint32_t so_sbcc;
826 	uint32_t stcb_sbcc;
827 	uint32_t incr;
828 };
829 
830 struct sctp_fr_log {
831 	uint32_t largest_tsn;
832 	uint32_t largest_new_tsn;
833 	uint32_t tsn;
834 };
835 
836 struct sctp_fr_map {
837 	uint32_t base;
838 	uint32_t cum;
839 	uint32_t high;
840 };
841 
842 struct sctp_rwnd_log {
843 	uint32_t rwnd;
844 	uint32_t send_size;
845 	uint32_t overhead;
846 	uint32_t new_rwnd;
847 };
848 
849 struct sctp_mbcnt_log {
850 	uint32_t total_queue_size;
851 	uint32_t size_change;
852 	uint32_t total_queue_mb_size;
853 	uint32_t mbcnt_change;
854 };
855 
856 struct sctp_sack_log {
857 	uint32_t cumack;
858 	uint32_t oldcumack;
859 	uint32_t tsn;
860 	uint16_t numGaps;
861 	uint16_t numDups;
862 };
863 
864 struct sctp_lock_log {
865 	void *sock;  /* FIXME: LP64 issue */
866 	void *inp; /* FIXME: LP64 issue */
867 	uint8_t tcb_lock;
868 	uint8_t inp_lock;
869 	uint8_t info_lock;
870 	uint8_t sock_lock;
871 	uint8_t sockrcvbuf_lock;
872 	uint8_t socksndbuf_lock;
873 	uint8_t create_lock;
874 	uint8_t resv;
875 };
876 
877 struct sctp_rto_log {
878 	void * net; /* FIXME: LP64 issue */
879 	uint32_t rtt;
880 };
881 
882 struct sctp_nagle_log {
883 	void  *stcb; /* FIXME: LP64 issue */
884 	uint32_t total_flight;
885 	uint32_t total_in_queue;
886 	uint16_t count_in_queue;
887 	uint16_t count_in_flight;
888 };
889 
890 struct sctp_sbwake_log {
891 	void *stcb; /* FIXME: LP64 issue */
892 	uint16_t send_q;
893 	uint16_t sent_q;
894 	uint16_t flight;
895 	uint16_t wake_cnt;
896 	uint8_t stream_qcnt;	/* chnk cnt */
897 	uint8_t chunks_on_oque;/* chunks out */
898 	uint8_t sbflags;
899 	uint8_t sctpflags;
900 };
901 
902 struct sctp_misc_info {
903 	uint32_t log1;
904 	uint32_t log2;
905 	uint32_t log3;
906 	uint32_t log4;
907 };
908 
909 struct sctp_log_closing {
910 	void *inp; /* FIXME: LP64 issue */
911 	void *stcb;  /* FIXME: LP64 issue */
912 	uint32_t sctp_flags;
913 	uint16_t  state;
914 	int16_t  loc;
915 };
916 
917 struct sctp_mbuf_log {
918 	struct mbuf *mp; /* FIXME: LP64 issue */
919 	caddr_t  ext;
920 	caddr_t  data;
921 	uint16_t size;
922 	uint8_t  refcnt;
923 	uint8_t  mbuf_flags;
924 };
925 
926 struct sctp_cwnd_log {
927 	uint64_t time_event;
928 	uint8_t  from;
929 	uint8_t  event_type;
930 	uint8_t  resv[2];
931 	union {
932 		struct sctp_log_closing close;
933 		struct sctp_blk_args blk;
934 		struct sctp_cwnd_args cwnd;
935 		struct sctp_str_log strlog;
936 		struct sctp_fr_log fr;
937 		struct sctp_fr_map map;
938 		struct sctp_rwnd_log rwnd;
939 		struct sctp_mbcnt_log mbcnt;
940 		struct sctp_sack_log sack;
941 		struct sctp_lock_log lock;
942 		struct sctp_rto_log rto;
943 		struct sctp_sb_log sb;
944 		struct sctp_nagle_log nagle;
945 		struct sctp_sbwake_log wake;
946 		struct sctp_mbuf_log mb;
947 		struct sctp_misc_info misc;
948 	}     x;
949 };
950 
951 struct sctp_cwnd_log_req {
952 	int32_t num_in_log;		/* Number in log */
953 	int32_t num_ret;		/* Number returned */
954 	int32_t start_at;		/* start at this one */
955 	int32_t end_at;		        /* end at this one */
956 	struct sctp_cwnd_log log[];
957 };
958 
959 struct sctp_timeval {
960 	uint32_t tv_sec;
961 	uint32_t tv_usec;
962 };
963 
964 struct sctpstat {
965 	struct sctp_timeval sctps_discontinuitytime; /* sctpStats 18 (TimeStamp) */
966 	/* MIB according to RFC 3873 */
967 	uint32_t  sctps_currestab;           /* sctpStats  1   (Gauge32) */
968 	uint32_t  sctps_activeestab;         /* sctpStats  2 (Counter32) */
969 	uint32_t  sctps_restartestab;
970 	uint32_t  sctps_collisionestab;
971 	uint32_t  sctps_passiveestab;        /* sctpStats  3 (Counter32) */
972 	uint32_t  sctps_aborted;             /* sctpStats  4 (Counter32) */
973 	uint32_t  sctps_shutdown;            /* sctpStats  5 (Counter32) */
974 	uint32_t  sctps_outoftheblue;        /* sctpStats  6 (Counter32) */
975 	uint32_t  sctps_checksumerrors;      /* sctpStats  7 (Counter32) */
976 	uint32_t  sctps_outcontrolchunks;    /* sctpStats  8 (Counter64) */
977 	uint32_t  sctps_outorderchunks;      /* sctpStats  9 (Counter64) */
978 	uint32_t  sctps_outunorderchunks;    /* sctpStats 10 (Counter64) */
979 	uint32_t  sctps_incontrolchunks;     /* sctpStats 11 (Counter64) */
980 	uint32_t  sctps_inorderchunks;       /* sctpStats 12 (Counter64) */
981 	uint32_t  sctps_inunorderchunks;     /* sctpStats 13 (Counter64) */
982 	uint32_t  sctps_fragusrmsgs;         /* sctpStats 14 (Counter64) */
983 	uint32_t  sctps_reasmusrmsgs;        /* sctpStats 15 (Counter64) */
984 	uint32_t  sctps_outpackets;          /* sctpStats 16 (Counter64) */
985 	uint32_t  sctps_inpackets;           /* sctpStats 17 (Counter64) */
986 
987 	/* input statistics: */
988 	uint32_t  sctps_recvpackets;         /* total input packets        */
989 	uint32_t  sctps_recvdatagrams;       /* total input datagrams      */
990 	uint32_t  sctps_recvpktwithdata;     /* total packets that had data */
991 	uint32_t  sctps_recvsacks;           /* total input SACK chunks    */
992 	uint32_t  sctps_recvdata;            /* total input DATA chunks    */
993 	uint32_t  sctps_recvdupdata;         /* total input duplicate DATA chunks */
994 	uint32_t  sctps_recvheartbeat;       /* total input HB chunks      */
995 	uint32_t  sctps_recvheartbeatack;    /* total input HB-ACK chunks  */
996 	uint32_t  sctps_recvecne;            /* total input ECNE chunks    */
997 	uint32_t  sctps_recvauth;            /* total input AUTH chunks    */
998 	uint32_t  sctps_recvauthmissing;     /* total input chunks missing AUTH */
999 	uint32_t  sctps_recvivalhmacid;      /* total number of invalid HMAC ids received */
1000 	uint32_t  sctps_recvivalkeyid;       /* total number of invalid secret ids received */
1001 	uint32_t  sctps_recvauthfailed;      /* total number of auth failed */
1002 	uint32_t  sctps_recvexpress;         /* total fast path receives all one chunk */
1003 	uint32_t  sctps_recvexpressm;        /* total fast path multi-part data */
1004 	uint32_t  sctps_recvnocrc;
1005 	uint32_t  sctps_recvswcrc;
1006 	uint32_t  sctps_recvhwcrc;
1007 
1008 	/* output statistics: */
1009 	uint32_t  sctps_sendpackets;         /* total output packets       */
1010 	uint32_t  sctps_sendsacks;           /* total output SACKs         */
1011 	uint32_t  sctps_senddata;            /* total output DATA chunks   */
1012 	uint32_t  sctps_sendretransdata;     /* total output retransmitted DATA chunks */
1013 	uint32_t  sctps_sendfastretrans;     /* total output fast retransmitted DATA chunks */
1014 	uint32_t  sctps_sendmultfastretrans; /* total FR's that happened more than once
1015                                               * to same chunk (u-del multi-fr algo).
1016 					      */
1017 	uint32_t  sctps_sendheartbeat;       /* total output HB chunks     */
1018 	uint32_t  sctps_sendecne;            /* total output ECNE chunks    */
1019 	uint32_t  sctps_sendauth;            /* total output AUTH chunks FIXME   */
1020 	uint32_t  sctps_senderrors;	     /* ip_output error counter */
1021 	uint32_t  sctps_sendnocrc;
1022 	uint32_t  sctps_sendswcrc;
1023 	uint32_t  sctps_sendhwcrc;
1024 	/* PCKDROPREP statistics: */
1025 	uint32_t  sctps_pdrpfmbox;           /* Packet drop from middle box */
1026 	uint32_t  sctps_pdrpfehos;           /* P-drop from end host */
1027 	uint32_t  sctps_pdrpmbda;            /* P-drops with data */
1028 	uint32_t  sctps_pdrpmbct;            /* P-drops, non-data, non-endhost */
1029 	uint32_t  sctps_pdrpbwrpt;           /* P-drop, non-endhost, bandwidth rep only */
1030 	uint32_t  sctps_pdrpcrupt;           /* P-drop, not enough for chunk header */
1031 	uint32_t  sctps_pdrpnedat;           /* P-drop, not enough data to confirm */
1032 	uint32_t  sctps_pdrppdbrk;           /* P-drop, where process_chunk_drop said break */
1033 	uint32_t  sctps_pdrptsnnf;           /* P-drop, could not find TSN */
1034 	uint32_t  sctps_pdrpdnfnd;           /* P-drop, attempt reverse TSN lookup */
1035 	uint32_t  sctps_pdrpdiwnp;           /* P-drop, e-host confirms zero-rwnd */
1036 	uint32_t  sctps_pdrpdizrw;           /* P-drop, midbox confirms no space */
1037 	uint32_t  sctps_pdrpbadd;            /* P-drop, data did not match TSN */
1038 	uint32_t  sctps_pdrpmark;            /* P-drop, TSN's marked for Fast Retran */
1039 	/* timeouts */
1040 	uint32_t  sctps_timoiterator;        /* Number of iterator timers that fired */
1041 	uint32_t  sctps_timodata;            /* Number of T3 data time outs */
1042 	uint32_t  sctps_timowindowprobe;     /* Number of window probe (T3) timers that fired */
1043 	uint32_t  sctps_timoinit;            /* Number of INIT timers that fired */
1044 	uint32_t  sctps_timosack;            /* Number of sack timers that fired */
1045 	uint32_t  sctps_timoshutdown;        /* Number of shutdown timers that fired */
1046 	uint32_t  sctps_timoheartbeat;       /* Number of heartbeat timers that fired */
1047 	uint32_t  sctps_timocookie;          /* Number of times a cookie timeout fired */
1048 	uint32_t  sctps_timosecret;          /* Number of times an endpoint changed its cookie secret*/
1049 	uint32_t  sctps_timopathmtu;         /* Number of PMTU timers that fired */
1050 	uint32_t  sctps_timoshutdownack;     /* Number of shutdown ack timers that fired */
1051 	uint32_t  sctps_timoshutdownguard;   /* Number of shutdown guard timers that fired */
1052 	uint32_t  sctps_timostrmrst;         /* Number of stream reset timers that fired */
1053 	uint32_t  sctps_timoearlyfr;         /* Number of early FR timers that fired */
1054 	uint32_t  sctps_timoasconf;          /* Number of times an asconf timer fired */
1055 	uint32_t  sctps_timodelprim;	     /* Number of times a prim_deleted timer fired */
1056 	uint32_t  sctps_timoautoclose;       /* Number of times auto close timer fired */
1057 	uint32_t  sctps_timoassockill;       /* Number of asoc free timers expired */
1058 	uint32_t  sctps_timoinpkill;         /* Number of inp free timers expired */
1059 	/* former early FR counters */
1060 	uint32_t  sctps_spare[11];
1061 	/* others */
1062 	uint32_t  sctps_hdrops;	          /* packet shorter than header */
1063 	uint32_t  sctps_badsum;	          /* checksum error             */
1064 	uint32_t  sctps_noport;           /* no endpoint for port       */
1065 	uint32_t  sctps_badvtag;          /* bad v-tag                  */
1066 	uint32_t  sctps_badsid;           /* bad SID                    */
1067 	uint32_t  sctps_nomem;            /* no memory                  */
1068 	uint32_t  sctps_fastretransinrtt; /* number of multiple FR in a RTT window */
1069 	uint32_t  sctps_markedretrans;
1070 	uint32_t  sctps_naglesent;        /* nagle allowed sending      */
1071 	uint32_t  sctps_naglequeued;      /* nagle doesn't allow sending */
1072 	uint32_t  sctps_maxburstqueued;   /* max burst doesn't allow sending */
1073 	uint32_t  sctps_ifnomemqueued;    /* look ahead tells us no memory in
1074                                          * interface ring buffer OR we had a
1075 					 * send error and are queuing one send.
1076                                          */
1077 	uint32_t  sctps_windowprobed;     /* total number of window probes sent */
1078 	uint32_t  sctps_lowlevelerr;	/* total times an output error causes us
1079 					 * to clamp down on next user send.
1080 					 */
1081 	uint32_t  sctps_lowlevelerrusr;	/* total times sctp_senderrors were caused from
1082 					 * a user send from a user invoked send not
1083 					 * a sack response
1084 					 */
1085 	uint32_t  sctps_datadropchklmt;	/* Number of in data drops due to chunk limit reached */
1086 	uint32_t  sctps_datadroprwnd;	/* Number of in data drops due to rwnd limit reached */
1087 	uint32_t  sctps_ecnereducedcwnd;  /* Number of times a ECN reduced the cwnd */
1088 	uint32_t  sctps_vtagexpress;	/* Used express lookup via vtag */
1089 	uint32_t  sctps_vtagbogus;	/* Collision in express lookup. */
1090 	uint32_t  sctps_primary_randry;	/* Number of times the sender ran dry of user data on primary */
1091 	uint32_t  sctps_cmt_randry;       /* Same for above */
1092 	uint32_t  sctps_slowpath_sack;    /* Sacks the slow way */
1093 	uint32_t  sctps_wu_sacks_sent;	/* Window Update only sacks sent */
1094 	uint32_t  sctps_sends_with_flags; /* number of sends with sinfo_flags !=0 */
1095 	uint32_t  sctps_sends_with_unord; /* number of unordered sends */
1096 	uint32_t  sctps_sends_with_eof; 	/* number of sends with EOF flag set */
1097 	uint32_t  sctps_sends_with_abort; /* number of sends with ABORT flag set */
1098 	uint32_t  sctps_protocol_drain_calls;	/* number of times protocol drain called */
1099 	uint32_t  sctps_protocol_drains_done; 	/* number of times we did a protocol drain */
1100 	uint32_t  sctps_read_peeks;	/* Number of times recv was called with peek */
1101 	uint32_t  sctps_cached_chk;       /* Number of cached chunks used */
1102 	uint32_t  sctps_cached_strmoq;    /* Number of cached stream oq's used */
1103 	uint32_t  sctps_left_abandon;     /* Number of unread messages abandoned by close */
1104 	uint32_t  sctps_send_burst_avoid; /* Unused */
1105 	uint32_t  sctps_send_cwnd_avoid;  /* Send cwnd full  avoidance, already max burst inflight to net */
1106 	uint32_t  sctps_fwdtsn_map_over;  /* number of map array over-runs via fwd-tsn's */
1107 	uint32_t  sctps_queue_upd_ecne;  /* Number of times we queued or updated an ECN chunk on send queue */
1108 	uint32_t  sctps_reserved[31];     /* Future ABI compat - remove int's from here when adding new */
1109 };
1110 
1111 #define SCTP_STAT_INCR(_x) SCTP_STAT_INCR_BY(_x,1)
1112 #define SCTP_STAT_DECR(_x) SCTP_STAT_DECR_BY(_x,1)
1113 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
1114 #define SCTP_STAT_INCR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x += _d)
1115 #define SCTP_STAT_DECR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x -= _d)
1116 #else
1117 #define SCTP_STAT_INCR_BY(_x,_d) atomic_add_int(&SCTP_BASE_STAT(_x), _d)
1118 #define SCTP_STAT_DECR_BY(_x,_d) atomic_subtract_int(&SCTP_BASE_STAT(_x), _d)
1119 #endif
1120 /* The following macros are for handling MIB values, */
1121 #define SCTP_STAT_INCR_COUNTER32(_x) SCTP_STAT_INCR(_x)
1122 #define SCTP_STAT_INCR_COUNTER64(_x) SCTP_STAT_INCR(_x)
1123 #define SCTP_STAT_INCR_GAUGE32(_x) SCTP_STAT_INCR(_x)
1124 #define SCTP_STAT_DECR_COUNTER32(_x) SCTP_STAT_DECR(_x)
1125 #define SCTP_STAT_DECR_COUNTER64(_x) SCTP_STAT_DECR(_x)
1126 #define SCTP_STAT_DECR_GAUGE32(_x) SCTP_STAT_DECR(_x)
1127 
1128 #if defined(__Userspace__)
1129 union sctp_sockstore {
1130 #if defined(INET)
1131 	struct sockaddr_in sin;
1132 #endif
1133 #if defined(INET6)
1134 	struct sockaddr_in6 sin6;
1135 #endif
1136 	struct sockaddr_conn sconn;
1137 	struct sockaddr sa;
1138 };
1139 #else
1140 union sctp_sockstore {
1141 	struct sockaddr_in sin;
1142 	struct sockaddr_in6 sin6;
1143 	struct sockaddr sa;
1144 };
1145 #endif
1146 
1147 
1148 /***********************************/
1149 /* And something for us old timers */
1150 /***********************************/
1151 
1152 #ifndef __APPLE__
1153 #ifndef __Userspace__
1154 #ifndef ntohll
1155 #if defined(__Userspace_os_Linux)
1156 #ifndef _BSD_SOURCE
1157 #define _BSD_SOURCE
1158 #endif
1159 #include <endian.h>
1160 #else
1161 #include <sys/endian.h>
1162 #endif
1163 #define ntohll(x) be64toh(x)
1164 #endif
1165 
1166 #ifndef htonll
1167 #if defined(__Userspace_os_Linux)
1168 #ifndef _BSD_SOURCE
1169 #define _BSD_SOURCE
1170 #endif
1171 #include <endian.h>
1172 #else
1173 #include <sys/endian.h>
1174 #endif
1175 #define htonll(x) htobe64(x)
1176 #endif
1177 #endif
1178 #endif
1179 /***********************************/
1180 
1181 
1182 struct xsctp_inpcb {
1183 	uint32_t last;
1184 	uint32_t flags;
1185 #if defined(__FreeBSD__) && __FreeBSD_version < 1000048
1186 	uint32_t features;
1187 #else
1188 	uint64_t features;
1189 #endif
1190 	uint32_t total_sends;
1191 	uint32_t total_recvs;
1192 	uint32_t total_nospaces;
1193 	uint32_t fragmentation_point;
1194 	uint16_t local_port;
1195 	uint16_t qlen;
1196 	uint16_t maxqlen;
1197 #if defined(__Windows__)
1198 	uint16_t padding;
1199 #endif
1200 #if defined(__FreeBSD__) && __FreeBSD_version < 1000048
1201 	uint32_t extra_padding[32]; /* future */
1202 #else
1203 	uint32_t extra_padding[31]; /* future */
1204 #endif
1205 };
1206 
1207 struct xsctp_tcb {
1208 	union sctp_sockstore primary_addr;      /* sctpAssocEntry 5/6 */
1209 	uint32_t last;
1210 	uint32_t heartbeat_interval;            /* sctpAssocEntry 7   */
1211 	uint32_t state;                         /* sctpAssocEntry 8   */
1212 	uint32_t in_streams;                    /* sctpAssocEntry 9   */
1213 	uint32_t out_streams;                   /* sctpAssocEntry 10  */
1214 	uint32_t max_nr_retrans;                /* sctpAssocEntry 11  */
1215 	uint32_t primary_process;               /* sctpAssocEntry 12  */
1216 	uint32_t T1_expireries;                 /* sctpAssocEntry 13  */
1217 	uint32_t T2_expireries;                 /* sctpAssocEntry 14  */
1218 	uint32_t retransmitted_tsns;            /* sctpAssocEntry 15  */
1219 	uint32_t total_sends;
1220 	uint32_t total_recvs;
1221 	uint32_t local_tag;
1222 	uint32_t remote_tag;
1223 	uint32_t initial_tsn;
1224 	uint32_t highest_tsn;
1225 	uint32_t cumulative_tsn;
1226 	uint32_t cumulative_tsn_ack;
1227 	uint32_t mtu;
1228 	uint32_t refcnt;
1229 	uint16_t local_port;                    /* sctpAssocEntry 3   */
1230 	uint16_t remote_port;                   /* sctpAssocEntry 4   */
1231 	struct sctp_timeval start_time;         /* sctpAssocEntry 16  */
1232 	struct sctp_timeval discontinuity_time; /* sctpAssocEntry 17  */
1233 #if defined(__FreeBSD__)
1234 #if __FreeBSD_version >= 800000
1235 	uint32_t peers_rwnd;
1236 	sctp_assoc_t assoc_id;                  /* sctpAssocEntry 1   */
1237 	uint32_t extra_padding[32];              /* future */
1238 #else
1239 #endif
1240 #else
1241 	uint32_t peers_rwnd;
1242 	sctp_assoc_t assoc_id;                  /* sctpAssocEntry 1   */
1243 	uint32_t extra_padding[32];              /* future */
1244 #endif
1245 };
1246 
1247 struct xsctp_laddr {
1248 	union sctp_sockstore address;    /* sctpAssocLocalAddrEntry 1/2 */
1249 	uint32_t last;
1250 	struct sctp_timeval start_time;  /* sctpAssocLocalAddrEntry 3   */
1251 	uint32_t extra_padding[32];       /* future */
1252 };
1253 
1254 struct xsctp_raddr {
1255 	union sctp_sockstore address;      /* sctpAssocLocalRemEntry 1/2 */
1256 	uint32_t last;
1257 	uint32_t rto;                      /* sctpAssocLocalRemEntry 5   */
1258 	uint32_t max_path_rtx;             /* sctpAssocLocalRemEntry 6   */
1259 	uint32_t rtx;                      /* sctpAssocLocalRemEntry 7   */
1260 	uint32_t error_counter;            /*                            */
1261 	uint32_t cwnd;                     /*                            */
1262 	uint32_t flight_size;              /*                            */
1263 	uint32_t mtu;                      /*                            */
1264 	uint8_t active;                    /* sctpAssocLocalRemEntry 3   */
1265 	uint8_t confirmed;                 /*                            */
1266 	uint8_t heartbeat_enabled;         /* sctpAssocLocalRemEntry 4   */
1267 	uint8_t potentially_failed;
1268 	struct sctp_timeval start_time;    /* sctpAssocLocalRemEntry 8   */
1269 #if defined(__FreeBSD__)
1270 #if __FreeBSD_version >= 800000
1271 	uint32_t rtt;
1272 	uint32_t heartbeat_interval;
1273 	uint32_t extra_padding[31];              /* future */
1274 #endif
1275 #else
1276 	uint32_t rtt;
1277 	uint32_t heartbeat_interval;
1278 	uint32_t extra_padding[31];              /* future */
1279 #endif
1280 };
1281 
1282 #define SCTP_MAX_LOGGING_SIZE 30000
1283 #define SCTP_TRACE_PARAMS 6                /* This number MUST be even   */
1284 
1285 struct sctp_log_entry {
1286 	uint64_t timestamp;
1287 	uint32_t subsys;
1288 	uint32_t padding;
1289 	uint32_t params[SCTP_TRACE_PARAMS];
1290 };
1291 
1292 struct sctp_log {
1293 	struct sctp_log_entry entry[SCTP_MAX_LOGGING_SIZE];
1294 	uint32_t index;
1295 	uint32_t padding;
1296 };
1297 
1298 /*
1299  * Kernel defined for sctp_send
1300  */
1301 #if defined(_KERNEL) || defined(__Userspace__)
1302 int
1303 sctp_lower_sosend(struct socket *so,
1304     struct sockaddr *addr,
1305     struct uio *uio,
1306 #if defined(__Panda__)
1307     pakhandle_type i_pak,
1308     pakhandle_type i_control,
1309 #else
1310     struct mbuf *i_pak,
1311     struct mbuf *control,
1312 #endif
1313     int flags,
1314     struct sctp_sndrcvinfo *srcv
1315 #if !(defined(__Panda__) || defined(__Userspace__))
1316 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1317     ,struct thread *p
1318 #elif defined(__Windows__)
1319     , PKTHREAD p
1320 #else
1321     ,struct proc *p
1322 #endif
1323 #endif
1324 );
1325 
1326 int
1327 sctp_sorecvmsg(struct socket *so,
1328     struct uio *uio,
1329 #if defined(__Panda__)
1330     particletype **mp,
1331 #else
1332     struct mbuf **mp,
1333 #endif
1334     struct sockaddr *from,
1335     int fromlen,
1336     int *msg_flags,
1337     struct sctp_sndrcvinfo *sinfo,
1338     int filling_sinfo);
1339 #endif
1340 
1341 /*
1342  * API system calls
1343  */
1344 #if !(defined(_KERNEL)) && !(defined(__Userspace__))
1345 
1346 __BEGIN_DECLS
1347 #if defined(__FreeBSD__) && __FreeBSD_version < 902000
1348 int	sctp_peeloff __P((int, sctp_assoc_t));
1349 int	sctp_bindx __P((int, struct sockaddr *, int, int));
1350 int	sctp_connectx __P((int, const struct sockaddr *, int, sctp_assoc_t *));
1351 int	sctp_getaddrlen __P((sa_family_t));
1352 int	sctp_getpaddrs __P((int, sctp_assoc_t, struct sockaddr **));
1353 void	sctp_freepaddrs __P((struct sockaddr *));
1354 int	sctp_getladdrs __P((int, sctp_assoc_t, struct sockaddr **));
1355 void	sctp_freeladdrs __P((struct sockaddr *));
1356 int	sctp_opt_info __P((int, sctp_assoc_t, int, void *, socklen_t *));
1357 
1358 /* deprecated */
1359 ssize_t	sctp_sendmsg __P((int, const void *, size_t, const struct sockaddr *,
1360 	    socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t));
1361 
1362 /* deprecated */
1363 ssize_t	sctp_send __P((int, const void *, size_t,
1364 	    const struct sctp_sndrcvinfo *, int));
1365 
1366 /* deprecated */
1367 ssize_t	sctp_sendx __P((int, const void *, size_t, struct sockaddr *,
1368 	    int, struct sctp_sndrcvinfo *, int));
1369 
1370 /* deprecated */
1371 ssize_t	sctp_sendmsgx __P((int sd, const void *, size_t, struct sockaddr *,
1372 	    int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t));
1373 
1374 sctp_assoc_t	sctp_getassocid __P((int, struct sockaddr *));
1375 
1376 /* deprecated */
1377 ssize_t	sctp_recvmsg __P((int, void *, size_t, struct sockaddr *, socklen_t *,
1378 	    struct sctp_sndrcvinfo *, int *));
1379 
1380 ssize_t	sctp_sendv __P((int, const struct iovec *, int, struct sockaddr *,
1381 	    int, void *, socklen_t, unsigned int, int));
1382 
1383 ssize_t	sctp_recvv __P((int, const struct iovec *, int, struct sockaddr *,
1384 	    socklen_t *, void *, socklen_t *, unsigned int *, int *));
1385 #else
1386 int	sctp_peeloff(int, sctp_assoc_t);
1387 int	sctp_bindx(int, struct sockaddr *, int, int);
1388 int	sctp_connectx(int, const struct sockaddr *, int, sctp_assoc_t *);
1389 int	sctp_getaddrlen(sa_family_t);
1390 int	sctp_getpaddrs(int, sctp_assoc_t, struct sockaddr **);
1391 void	sctp_freepaddrs(struct sockaddr *);
1392 int	sctp_getladdrs(int, sctp_assoc_t, struct sockaddr **);
1393 void	sctp_freeladdrs(struct sockaddr *);
1394 int	sctp_opt_info(int, sctp_assoc_t, int, void *, socklen_t *);
1395 
1396 /* deprecated */
1397 ssize_t	sctp_sendmsg(int, const void *, size_t, const struct sockaddr *,
1398 	    socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
1399 
1400 /* deprecated */
1401 ssize_t	sctp_send(int, const void *, size_t,
1402 	    const struct sctp_sndrcvinfo *, int);
1403 
1404 /* deprecated */
1405 ssize_t	sctp_sendx(int, const void *, size_t, struct sockaddr *,
1406 	    int, struct sctp_sndrcvinfo *, int);
1407 
1408 /* deprecated */
1409 ssize_t	sctp_sendmsgx(int sd, const void *, size_t, struct sockaddr *,
1410 	    int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
1411 
1412 sctp_assoc_t	sctp_getassocid(int, struct sockaddr *);
1413 
1414 /* deprecated */
1415 ssize_t	sctp_recvmsg(int, void *, size_t, struct sockaddr *, socklen_t *,
1416 	    struct sctp_sndrcvinfo *, int *);
1417 
1418 ssize_t	sctp_sendv(int, const struct iovec *, int, struct sockaddr *,
1419 	    int, void *, socklen_t, unsigned int, int);
1420 
1421 ssize_t	sctp_recvv(int, const struct iovec *, int, struct sockaddr *,
1422 	    socklen_t *, void *, socklen_t *, unsigned int *, int *);
1423 #endif
1424 __END_DECLS
1425 
1426 #endif				/* !_KERNEL */
1427 #endif				/* !__sctp_uio_h__ */
1428