xref: /freebsd/sys/netinet/sctp_uio.h (revision 4d3fc8b0)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are met:
10  *
11  * a) Redistributions of source code must retain the above copyright notice,
12  *    this list of conditions and the following disclaimer.
13  *
14  * b) Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in
16  *    the documentation and/or other materials provided with the distribution.
17  *
18  * c) Neither the name of Cisco Systems, Inc. nor the names of its
19  *    contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32  * THE POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37 
38 #ifndef _NETINET_SCTP_UIO_H_
39 #define _NETINET_SCTP_UIO_H_
40 
41 #if !defined(_KERNEL)
42 #include <stdint.h>
43 #endif
44 #include <sys/types.h>
45 #include <sys/socket.h>
46 #include <netinet/in.h>
47 
48 typedef uint32_t sctp_assoc_t;
49 
50 #define SCTP_FUTURE_ASSOC  0
51 #define SCTP_CURRENT_ASSOC 1
52 #define SCTP_ALL_ASSOC     2
53 
54 struct sctp_event {
55 	sctp_assoc_t se_assoc_id;
56 	uint16_t se_type;
57 	uint8_t se_on;
58 };
59 
60 /* Compatibility to previous define's */
61 #define sctp_stream_reset_events sctp_stream_reset_event
62 
63 /* On/Off setup for subscription to events */
64 struct sctp_event_subscribe {
65 	uint8_t sctp_data_io_event;
66 	uint8_t sctp_association_event;
67 	uint8_t sctp_address_event;
68 	uint8_t sctp_send_failure_event;
69 	uint8_t sctp_peer_error_event;
70 	uint8_t sctp_shutdown_event;
71 	uint8_t sctp_partial_delivery_event;
72 	uint8_t sctp_adaptation_layer_event;
73 	uint8_t sctp_authentication_event;
74 	uint8_t sctp_sender_dry_event;
75 	uint8_t sctp_stream_reset_event;
76 };
77 
78 /* ancillary data types */
79 #define SCTP_INIT	0x0001
80 #define SCTP_SNDRCV	0x0002
81 #define SCTP_EXTRCV	0x0003
82 #define SCTP_SNDINFO    0x0004
83 #define SCTP_RCVINFO    0x0005
84 #define SCTP_NXTINFO    0x0006
85 #define SCTP_PRINFO     0x0007
86 #define SCTP_AUTHINFO   0x0008
87 #define SCTP_DSTADDRV4  0x0009
88 #define SCTP_DSTADDRV6  0x000a
89 
90 /*
91  * ancillary data structures
92  */
93 struct sctp_initmsg {
94 	uint16_t sinit_num_ostreams;
95 	uint16_t sinit_max_instreams;
96 	uint16_t sinit_max_attempts;
97 	uint16_t sinit_max_init_timeo;
98 };
99 
100 /* We add 96 bytes to the size of sctp_sndrcvinfo.
101  * This makes the current structure 128 bytes long
102  * which is nicely 64 bit aligned but also has room
103  * for us to add more and keep ABI compatibility.
104  * For example, already we have the sctp_extrcvinfo
105  * when enabled which is 48 bytes.
106  */
107 
108 /*
109  * The assoc up needs a verfid
110  * all sendrcvinfo's need a verfid for SENDING only.
111  */
112 
113 #define SCTP_ALIGN_RESV_PAD 92
114 #define SCTP_ALIGN_RESV_PAD_SHORT 76
115 
116 struct sctp_sndrcvinfo {
117 	uint16_t sinfo_stream;
118 	uint16_t sinfo_ssn;
119 	uint16_t sinfo_flags;
120 	uint32_t sinfo_ppid;
121 	uint32_t sinfo_context;
122 	uint32_t sinfo_timetolive;
123 	uint32_t sinfo_tsn;
124 	uint32_t sinfo_cumtsn;
125 	sctp_assoc_t sinfo_assoc_id;
126 	uint16_t sinfo_keynumber;
127 	uint16_t sinfo_keynumber_valid;
128 	uint8_t __reserve_pad[SCTP_ALIGN_RESV_PAD];
129 };
130 
131 struct sctp_extrcvinfo {
132 	uint16_t sinfo_stream;
133 	uint16_t sinfo_ssn;
134 	uint16_t sinfo_flags;
135 	uint32_t sinfo_ppid;
136 	uint32_t sinfo_context;
137 	uint32_t sinfo_timetolive;	/* should have been sinfo_pr_value */
138 	uint32_t sinfo_tsn;
139 	uint32_t sinfo_cumtsn;
140 	sctp_assoc_t sinfo_assoc_id;
141 	uint16_t serinfo_next_flags;
142 	uint16_t serinfo_next_stream;
143 	uint32_t serinfo_next_aid;
144 	uint32_t serinfo_next_length;
145 	uint32_t serinfo_next_ppid;
146 	uint16_t sinfo_keynumber;
147 	uint16_t sinfo_keynumber_valid;
148 	uint8_t __reserve_pad[SCTP_ALIGN_RESV_PAD_SHORT];
149 };
150 #define sinfo_pr_value sinfo_timetolive
151 #define sreinfo_next_flags serinfo_next_flags
152 #define sreinfo_next_stream serinfo_next_stream
153 #define sreinfo_next_aid serinfo_next_aid
154 #define sreinfo_next_length serinfo_next_length
155 #define sreinfo_next_ppid serinfo_next_ppid
156 
157 struct sctp_sndinfo {
158 	uint16_t snd_sid;
159 	uint16_t snd_flags;
160 	uint32_t snd_ppid;
161 	uint32_t snd_context;
162 	sctp_assoc_t snd_assoc_id;
163 };
164 
165 struct sctp_prinfo {
166 	uint16_t pr_policy;
167 	uint32_t pr_value;
168 };
169 
170 struct sctp_default_prinfo {
171 	uint16_t pr_policy;
172 	uint32_t pr_value;
173 	sctp_assoc_t pr_assoc_id;
174 };
175 
176 struct sctp_authinfo {
177 	uint16_t auth_keynumber;
178 };
179 
180 struct sctp_rcvinfo {
181 	uint16_t rcv_sid;
182 	uint16_t rcv_ssn;
183 	uint16_t rcv_flags;
184 	uint32_t rcv_ppid;
185 	uint32_t rcv_tsn;
186 	uint32_t rcv_cumtsn;
187 	uint32_t rcv_context;
188 	sctp_assoc_t rcv_assoc_id;
189 };
190 
191 struct sctp_nxtinfo {
192 	uint16_t nxt_sid;
193 	uint16_t nxt_flags;
194 	uint32_t nxt_ppid;
195 	uint32_t nxt_length;
196 	sctp_assoc_t nxt_assoc_id;
197 };
198 
199 #define SCTP_NO_NEXT_MSG           0x0000
200 #define SCTP_NEXT_MSG_AVAIL        0x0001
201 #define SCTP_NEXT_MSG_ISCOMPLETE   0x0002
202 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
203 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
204 
205 struct sctp_recvv_rn {
206 	struct sctp_rcvinfo recvv_rcvinfo;
207 	struct sctp_nxtinfo recvv_nxtinfo;
208 };
209 
210 #define SCTP_RECVV_NOINFO  0
211 #define SCTP_RECVV_RCVINFO 1
212 #define SCTP_RECVV_NXTINFO 2
213 #define SCTP_RECVV_RN      3
214 
215 #define SCTP_SENDV_NOINFO   0
216 #define SCTP_SENDV_SNDINFO  1
217 #define SCTP_SENDV_PRINFO   2
218 #define SCTP_SENDV_AUTHINFO 3
219 #define SCTP_SENDV_SPA      4
220 
221 struct sctp_sendv_spa {
222 	uint32_t sendv_flags;
223 	struct sctp_sndinfo sendv_sndinfo;
224 	struct sctp_prinfo sendv_prinfo;
225 	struct sctp_authinfo sendv_authinfo;
226 };
227 
228 #define SCTP_SEND_SNDINFO_VALID  0x00000001
229 #define SCTP_SEND_PRINFO_VALID   0x00000002
230 #define SCTP_SEND_AUTHINFO_VALID 0x00000004
231 
232 struct sctp_snd_all_completes {
233 	uint16_t sall_stream;
234 	uint16_t sall_flags;
235 	uint32_t sall_ppid;
236 	uint32_t sall_context;
237 	uint32_t sall_num_sent;
238 	uint32_t sall_num_failed;
239 };
240 
241 /* Flags that go into the sinfo->sinfo_flags field */
242 #define SCTP_NOTIFICATION     0x0010	/* next message is a notification */
243 #define SCTP_COMPLETE         0x0020	/* next message is complete */
244 #define SCTP_EOF              0x0100	/* Start shutdown procedures */
245 #define SCTP_ABORT            0x0200	/* Send an ABORT to peer */
246 #define SCTP_UNORDERED        0x0400	/* Message is un-ordered */
247 #define SCTP_ADDR_OVER        0x0800	/* Override the primary-address */
248 #define SCTP_SENDALL          0x1000	/* Send this on all associations */
249 #define SCTP_EOR              0x2000	/* end of message signal */
250 #define SCTP_SACK_IMMEDIATELY 0x4000	/* Set I-Bit */
251 
252 #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
253                                     & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
254 				        SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
255 					SCTP_SACK_IMMEDIATELY)) != 0)
256 /* for the endpoint */
257 
258 /* The lower four bits is an enumeration of PR-SCTP policies */
259 #define SCTP_PR_SCTP_NONE 0x0000	/* Reliable transfer */
260 #define SCTP_PR_SCTP_TTL  0x0001	/* Time based PR-SCTP */
261 #define SCTP_PR_SCTP_PRIO 0x0002	/* Buffer based PR-SCTP */
262 #define SCTP_PR_SCTP_BUF  SCTP_PR_SCTP_PRIO	/* For backwards compatibility */
263 #define SCTP_PR_SCTP_RTX  0x0003	/* Number of retransmissions based
264 					 * PR-SCTP */
265 #define SCTP_PR_SCTP_MAX  SCTP_PR_SCTP_RTX
266 #define SCTP_PR_SCTP_ALL  0x000f	/* Used for aggregated stats */
267 
268 #define PR_SCTP_POLICY(x)         ((x) & 0x0f)
269 #define PR_SCTP_ENABLED(x)        ((PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE) && \
270                                    (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_ALL))
271 #define PR_SCTP_TTL_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
272 #define PR_SCTP_BUF_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
273 #define PR_SCTP_RTX_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
274 #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_MAX)
275 #define PR_SCTP_VALID_POLICY(x)   (PR_SCTP_POLICY(x) <= SCTP_PR_SCTP_MAX)
276 
277 /* Stat's */
278 struct sctp_pcbinfo {
279 	uint32_t ep_count;
280 	uint32_t asoc_count;
281 	uint32_t laddr_count;
282 	uint32_t raddr_count;
283 	uint32_t chk_count;
284 	uint32_t readq_count;
285 	uint32_t free_chunks;
286 	uint32_t stream_oque;
287 };
288 
289 struct sctp_sockstat {
290 	sctp_assoc_t ss_assoc_id;
291 	uint32_t ss_total_sndbuf;
292 	uint32_t ss_total_recv_buf;
293 };
294 
295 /*
296  * notification event structures
297  */
298 
299 /*
300  * association change event
301  */
302 struct sctp_assoc_change {
303 	uint16_t sac_type;
304 	uint16_t sac_flags;
305 	uint32_t sac_length;
306 	uint16_t sac_state;
307 	uint16_t sac_error;
308 	uint16_t sac_outbound_streams;
309 	uint16_t sac_inbound_streams;
310 	sctp_assoc_t sac_assoc_id;
311 	uint8_t sac_info[];
312 };
313 
314 /* sac_state values */
315 #define SCTP_COMM_UP            0x0001
316 #define SCTP_COMM_LOST          0x0002
317 #define SCTP_RESTART            0x0003
318 #define SCTP_SHUTDOWN_COMP      0x0004
319 #define SCTP_CANT_STR_ASSOC     0x0005
320 
321 /* sac_info values */
322 #define SCTP_ASSOC_SUPPORTS_PR			0x01
323 #define SCTP_ASSOC_SUPPORTS_AUTH		0x02
324 #define SCTP_ASSOC_SUPPORTS_ASCONF		0x03
325 #define SCTP_ASSOC_SUPPORTS_MULTIBUF		0x04
326 #define SCTP_ASSOC_SUPPORTS_RE_CONFIG		0x05
327 #define SCTP_ASSOC_SUPPORTS_INTERLEAVING	0x06
328 #define SCTP_ASSOC_SUPPORTS_MAX			0x06
329 /*
330  * Address event
331  */
332 struct sctp_paddr_change {
333 	uint16_t spc_type;
334 	uint16_t spc_flags;
335 	uint32_t spc_length;
336 	struct sockaddr_storage spc_aaddr;
337 	uint32_t spc_state;
338 	uint32_t spc_error;
339 	sctp_assoc_t spc_assoc_id;
340 };
341 
342 /* paddr state values */
343 #define SCTP_ADDR_AVAILABLE	0x0001
344 #define SCTP_ADDR_UNREACHABLE	0x0002
345 #define SCTP_ADDR_REMOVED	0x0003
346 #define SCTP_ADDR_ADDED		0x0004
347 #define SCTP_ADDR_MADE_PRIM	0x0005
348 #define SCTP_ADDR_CONFIRMED	0x0006
349 
350 #define SCTP_ACTIVE		0x0001	/* SCTP_ADDR_REACHABLE */
351 #define SCTP_INACTIVE		0x0002	/* neither SCTP_ADDR_REACHABLE nor
352 					 * SCTP_ADDR_UNCONFIRMED */
353 #define SCTP_UNCONFIRMED	0x0200	/* SCTP_ADDR_UNCONFIRMED */
354 
355 /* remote error events */
356 struct sctp_remote_error {
357 	uint16_t sre_type;
358 	uint16_t sre_flags;
359 	uint32_t sre_length;
360 	uint16_t sre_error;
361 	sctp_assoc_t sre_assoc_id;
362 	uint8_t sre_data[];
363 };
364 
365 /* data send failure event (deprecated) */
366 struct sctp_send_failed {
367 	uint16_t ssf_type;
368 	uint16_t ssf_flags;
369 	uint32_t ssf_length;
370 	uint32_t ssf_error;
371 	struct sctp_sndrcvinfo ssf_info;
372 	sctp_assoc_t ssf_assoc_id;
373 	uint8_t ssf_data[];
374 };
375 
376 /* data send failure event (not deprecated) */
377 struct sctp_send_failed_event {
378 	uint16_t ssfe_type;
379 	uint16_t ssfe_flags;
380 	uint32_t ssfe_length;
381 	uint32_t ssfe_error;
382 	struct sctp_sndinfo ssfe_info;
383 	sctp_assoc_t ssfe_assoc_id;
384 	uint8_t ssfe_data[];
385 };
386 
387 /* flag that indicates state of data */
388 #define SCTP_DATA_UNSENT	0x0001	/* inqueue never on wire */
389 #define SCTP_DATA_SENT		0x0002	/* on wire at failure */
390 
391 /* shutdown event */
392 struct sctp_shutdown_event {
393 	uint16_t sse_type;
394 	uint16_t sse_flags;
395 	uint32_t sse_length;
396 	sctp_assoc_t sse_assoc_id;
397 };
398 
399 /* Adaptation layer indication stuff */
400 struct sctp_adaptation_event {
401 	uint16_t sai_type;
402 	uint16_t sai_flags;
403 	uint32_t sai_length;
404 	uint32_t sai_adaptation_ind;
405 	sctp_assoc_t sai_assoc_id;
406 };
407 
408 struct sctp_setadaptation {
409 	uint32_t ssb_adaptation_ind;
410 };
411 
412 /* compatible old spelling */
413 struct sctp_adaption_event {
414 	uint16_t sai_type;
415 	uint16_t sai_flags;
416 	uint32_t sai_length;
417 	uint32_t sai_adaption_ind;
418 	sctp_assoc_t sai_assoc_id;
419 };
420 
421 struct sctp_setadaption {
422 	uint32_t ssb_adaption_ind;
423 };
424 
425 /*
426  * Partial Delivery API event
427  */
428 struct sctp_pdapi_event {
429 	uint16_t pdapi_type;
430 	uint16_t pdapi_flags;
431 	uint32_t pdapi_length;
432 	uint32_t pdapi_indication;
433 	uint16_t pdapi_stream;
434 	uint16_t pdapi_seq;
435 	sctp_assoc_t pdapi_assoc_id;
436 };
437 
438 /* indication values */
439 #define SCTP_PARTIAL_DELIVERY_ABORTED	0x0001
440 
441 /*
442  * authentication key event
443  */
444 struct sctp_authkey_event {
445 	uint16_t auth_type;
446 	uint16_t auth_flags;
447 	uint32_t auth_length;
448 	uint16_t auth_keynumber;
449 	uint16_t auth_altkeynumber;
450 	uint32_t auth_indication;
451 	sctp_assoc_t auth_assoc_id;
452 };
453 
454 /* indication values */
455 #define SCTP_AUTH_NEW_KEY	0x0001
456 #define SCTP_AUTH_NEWKEY	SCTP_AUTH_NEW_KEY
457 #define SCTP_AUTH_NO_AUTH	0x0002
458 #define SCTP_AUTH_FREE_KEY	0x0003
459 
460 struct sctp_sender_dry_event {
461 	uint16_t sender_dry_type;
462 	uint16_t sender_dry_flags;
463 	uint32_t sender_dry_length;
464 	sctp_assoc_t sender_dry_assoc_id;
465 };
466 
467 /*
468  * Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT
469  */
470 struct sctp_stream_reset_event {
471 	uint16_t strreset_type;
472 	uint16_t strreset_flags;
473 	uint32_t strreset_length;
474 	sctp_assoc_t strreset_assoc_id;
475 	uint16_t strreset_stream_list[];
476 };
477 
478 /* flags in stream_reset_event (strreset_flags) */
479 #define SCTP_STREAM_RESET_INCOMING_SSN  0x0001
480 #define SCTP_STREAM_RESET_OUTGOING_SSN  0x0002
481 #define SCTP_STREAM_RESET_DENIED        0x0004
482 #define SCTP_STREAM_RESET_FAILED        0x0008
483 
484 /*
485  * Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT
486  */
487 struct sctp_assoc_reset_event {
488 	uint16_t assocreset_type;
489 	uint16_t assocreset_flags;
490 	uint32_t assocreset_length;
491 	sctp_assoc_t assocreset_assoc_id;
492 	uint32_t assocreset_local_tsn;
493 	uint32_t assocreset_remote_tsn;
494 };
495 
496 #define SCTP_ASSOC_RESET_DENIED		0x0004
497 #define SCTP_ASSOC_RESET_FAILED		0x0008
498 
499 /*
500  * Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT
501  */
502 struct sctp_stream_change_event {
503 	uint16_t strchange_type;
504 	uint16_t strchange_flags;
505 	uint32_t strchange_length;
506 	sctp_assoc_t strchange_assoc_id;
507 	uint16_t strchange_instrms;
508 	uint16_t strchange_outstrms;
509 };
510 
511 #define SCTP_STREAM_CHANGE_DENIED	0x0004
512 #define SCTP_STREAM_CHANGE_FAILED	0x0008
513 
514 /* SCTP notification event */
515 struct sctp_tlv {
516 	uint16_t sn_type;
517 	uint16_t sn_flags;
518 	uint32_t sn_length;
519 };
520 
521 union sctp_notification {
522 	struct sctp_tlv sn_header;
523 	struct sctp_assoc_change sn_assoc_change;
524 	struct sctp_paddr_change sn_paddr_change;
525 	struct sctp_remote_error sn_remote_error;
526 	struct sctp_send_failed sn_send_failed;
527 	struct sctp_shutdown_event sn_shutdown_event;
528 	struct sctp_adaptation_event sn_adaptation_event;
529 	/* compatibility same as above */
530 	struct sctp_adaption_event sn_adaption_event;
531 	struct sctp_pdapi_event sn_pdapi_event;
532 	struct sctp_authkey_event sn_auth_event;
533 	struct sctp_sender_dry_event sn_sender_dry_event;
534 	struct sctp_send_failed_event sn_send_failed_event;
535 	struct sctp_stream_reset_event sn_strreset_event;
536 	struct sctp_assoc_reset_event sn_assocreset_event;
537 	struct sctp_stream_change_event sn_strchange_event;
538 };
539 
540 /* notification types */
541 #define SCTP_ASSOC_CHANGE                       0x0001
542 #define SCTP_PEER_ADDR_CHANGE                   0x0002
543 #define SCTP_REMOTE_ERROR                       0x0003
544 #define SCTP_SEND_FAILED                        0x0004
545 #define SCTP_SHUTDOWN_EVENT                     0x0005
546 #define SCTP_ADAPTATION_INDICATION              0x0006
547 /* same as above */
548 #define SCTP_ADAPTION_INDICATION                0x0006
549 #define SCTP_PARTIAL_DELIVERY_EVENT             0x0007
550 #define SCTP_AUTHENTICATION_EVENT               0x0008
551 #define SCTP_STREAM_RESET_EVENT                 0x0009
552 #define SCTP_SENDER_DRY_EVENT                   0x000a
553 #define SCTP_NOTIFICATIONS_STOPPED_EVENT        0x000b	/* we don't send this */
554 #define SCTP_ASSOC_RESET_EVENT                  0x000c
555 #define SCTP_STREAM_CHANGE_EVENT                0x000d
556 #define SCTP_SEND_FAILED_EVENT                  0x000e
557 /*
558  * socket option structs
559  */
560 
561 struct sctp_paddrparams {
562 	struct sockaddr_storage spp_address;
563 	sctp_assoc_t spp_assoc_id;
564 	uint32_t spp_hbinterval;
565 	uint32_t spp_pathmtu;
566 	uint32_t spp_flags;
567 	uint32_t spp_ipv6_flowlabel;
568 	uint16_t spp_pathmaxrxt;
569 	uint8_t spp_dscp;
570 };
571 #define spp_ipv4_tos spp_dscp
572 
573 #define SPP_HB_ENABLE		0x00000001
574 #define SPP_HB_DISABLE		0x00000002
575 #define SPP_HB_DEMAND		0x00000004
576 #define SPP_PMTUD_ENABLE	0x00000008
577 #define SPP_PMTUD_DISABLE	0x00000010
578 #define SPP_HB_TIME_IS_ZERO     0x00000080
579 #define SPP_IPV6_FLOWLABEL      0x00000100
580 #define SPP_DSCP                0x00000200
581 #define SPP_IPV4_TOS            SPP_DSCP
582 
583 struct sctp_paddrthlds {
584 	struct sockaddr_storage spt_address;
585 	sctp_assoc_t spt_assoc_id;
586 	uint16_t spt_pathmaxrxt;
587 	uint16_t spt_pathpfthld;
588 	uint16_t spt_pathcpthld;
589 };
590 
591 struct sctp_paddrinfo {
592 	struct sockaddr_storage spinfo_address;
593 	sctp_assoc_t spinfo_assoc_id;
594 	int32_t spinfo_state;
595 	uint32_t spinfo_cwnd;
596 	uint32_t spinfo_srtt;
597 	uint32_t spinfo_rto;
598 	uint32_t spinfo_mtu;
599 };
600 
601 struct sctp_rtoinfo {
602 	sctp_assoc_t srto_assoc_id;
603 	uint32_t srto_initial;
604 	uint32_t srto_max;
605 	uint32_t srto_min;
606 };
607 
608 struct sctp_assocparams {
609 	sctp_assoc_t sasoc_assoc_id;
610 	uint32_t sasoc_peer_rwnd;
611 	uint32_t sasoc_local_rwnd;
612 	uint32_t sasoc_cookie_life;
613 	uint16_t sasoc_asocmaxrxt;
614 	uint16_t sasoc_number_peer_destinations;
615 };
616 
617 struct sctp_setprim {
618 	struct sockaddr_storage ssp_addr;
619 	sctp_assoc_t ssp_assoc_id;
620 	uint8_t ssp_padding[4];
621 };
622 
623 struct sctp_setpeerprim {
624 	struct sockaddr_storage sspp_addr;
625 	sctp_assoc_t sspp_assoc_id;
626 	uint8_t sspp_padding[4];
627 };
628 
629 union sctp_sockstore {
630 	struct sockaddr_in sin;
631 	struct sockaddr_in6 sin6;
632 	struct sockaddr sa;
633 };
634 
635 struct sctp_getaddresses {
636 	sctp_assoc_t sget_assoc_id;
637 	union sctp_sockstore addr[];
638 };
639 
640 struct sctp_status {
641 	sctp_assoc_t sstat_assoc_id;
642 	int32_t sstat_state;
643 	uint32_t sstat_rwnd;
644 	uint16_t sstat_unackdata;
645 	uint16_t sstat_penddata;
646 	uint16_t sstat_instrms;
647 	uint16_t sstat_outstrms;
648 	uint32_t sstat_fragmentation_point;
649 	struct sctp_paddrinfo sstat_primary;
650 };
651 
652 /*
653  * AUTHENTICATION support
654  */
655 /* SCTP_AUTH_CHUNK */
656 struct sctp_authchunk {
657 	uint8_t sauth_chunk;
658 };
659 
660 /* SCTP_AUTH_KEY */
661 struct sctp_authkey {
662 	sctp_assoc_t sca_assoc_id;
663 	uint16_t sca_keynumber;
664 	uint16_t sca_keylength;
665 	uint8_t sca_key[];
666 };
667 
668 /* SCTP_HMAC_IDENT */
669 struct sctp_hmacalgo {
670 	uint32_t shmac_number_of_idents;
671 	uint16_t shmac_idents[];
672 };
673 
674 /* AUTH hmac_id */
675 #define SCTP_AUTH_HMAC_ID_RSVD		0x0000
676 #define SCTP_AUTH_HMAC_ID_SHA1		0x0001	/* default, mandatory */
677 #define SCTP_AUTH_HMAC_ID_SHA256	0x0003
678 
679 /* SCTP_AUTH_ACTIVE_KEY / SCTP_AUTH_DELETE_KEY */
680 struct sctp_authkeyid {
681 	sctp_assoc_t scact_assoc_id;
682 	uint16_t scact_keynumber;
683 };
684 
685 /* SCTP_PEER_AUTH_CHUNKS / SCTP_LOCAL_AUTH_CHUNKS */
686 struct sctp_authchunks {
687 	sctp_assoc_t gauth_assoc_id;
688 	uint32_t gauth_number_of_chunks;
689 	uint8_t gauth_chunks[];
690 };
691 
692 struct sctp_assoc_value {
693 	sctp_assoc_t assoc_id;
694 	uint32_t assoc_value;
695 };
696 
697 struct sctp_cc_option {
698 	int option;
699 	struct sctp_assoc_value aid_value;
700 };
701 
702 struct sctp_stream_value {
703 	sctp_assoc_t assoc_id;
704 	uint16_t stream_id;
705 	uint16_t stream_value;
706 };
707 
708 struct sctp_assoc_ids {
709 	uint32_t gaids_number_of_ids;
710 	sctp_assoc_t gaids_assoc_id[];
711 };
712 
713 struct sctp_sack_info {
714 	sctp_assoc_t sack_assoc_id;
715 	uint32_t sack_delay;
716 	uint32_t sack_freq;
717 };
718 
719 struct sctp_timeouts {
720 	sctp_assoc_t stimo_assoc_id;
721 	uint32_t stimo_init;
722 	uint32_t stimo_data;
723 	uint32_t stimo_sack;
724 	uint32_t stimo_shutdown;
725 	uint32_t stimo_heartbeat;
726 	uint32_t stimo_cookie;
727 	uint32_t stimo_shutdownack;
728 };
729 
730 struct sctp_udpencaps {
731 	struct sockaddr_storage sue_address;
732 	sctp_assoc_t sue_assoc_id;
733 	uint16_t sue_port;
734 };
735 
736 struct sctp_prstatus {
737 	sctp_assoc_t sprstat_assoc_id;
738 	uint16_t sprstat_sid;
739 	uint16_t sprstat_policy;
740 	uint64_t sprstat_abandoned_unsent;
741 	uint64_t sprstat_abandoned_sent;
742 };
743 
744 struct sctp_cwnd_args {
745 	struct sctp_nets *net;	/* network to *//* FIXME: LP64 issue */
746 	uint32_t cwnd_new_value;	/* cwnd in k */
747 	uint32_t pseudo_cumack;
748 	uint16_t inflight;	/* flightsize in k */
749 	uint16_t cwnd_augment;	/* increment to it */
750 	uint8_t meets_pseudo_cumack;
751 	uint8_t need_new_pseudo_cumack;
752 	uint8_t cnt_in_send;
753 	uint8_t cnt_in_str;
754 };
755 
756 struct sctp_blk_args {
757 	uint32_t onsb;		/* in 1k bytes */
758 	uint32_t sndlen;	/* len of send being attempted */
759 	uint32_t peer_rwnd;	/* rwnd of peer */
760 	uint16_t send_sent_qcnt;	/* chnk cnt */
761 	uint16_t stream_qcnt;	/* chnk cnt */
762 	uint16_t chunks_on_oque;	/* chunks out */
763 	uint16_t flight_size;	/* flight size in k */
764 };
765 
766 /*
767  * Max we can reset in one setting, note this is dictated not by the define
768  * but the size of a mbuf cluster so don't change this define and think you
769  * can specify more. You must do multiple resets if you want to reset more
770  * than SCTP_MAX_EXPLICIT_STR_RESET.
771  */
772 #define SCTP_MAX_EXPLICT_STR_RESET   1000
773 
774 struct sctp_reset_streams {
775 	sctp_assoc_t srs_assoc_id;
776 	uint16_t srs_flags;
777 	uint16_t srs_number_streams;	/* 0 == ALL */
778 	uint16_t srs_stream_list[];	/* list if strrst_num_streams is not 0 */
779 };
780 
781 struct sctp_add_streams {
782 	sctp_assoc_t sas_assoc_id;
783 	uint16_t sas_instrms;
784 	uint16_t sas_outstrms;
785 };
786 
787 struct sctp_get_nonce_values {
788 	sctp_assoc_t gn_assoc_id;
789 	uint32_t gn_peers_tag;
790 	uint32_t gn_local_tag;
791 };
792 
793 /* Debugging logs */
794 struct sctp_str_log {
795 	void *stcb;		/* FIXME: LP64 issue */
796 	uint32_t n_tsn;
797 	uint32_t e_tsn;
798 	uint16_t n_sseq;
799 	uint16_t e_sseq;
800 	uint16_t strm;
801 };
802 
803 struct sctp_sb_log {
804 	void *stcb;		/* FIXME: LP64 issue */
805 	uint32_t so_sbcc;
806 	uint32_t stcb_sbcc;
807 	uint32_t incr;
808 };
809 
810 struct sctp_fr_log {
811 	uint32_t largest_tsn;
812 	uint32_t largest_new_tsn;
813 	uint32_t tsn;
814 };
815 
816 struct sctp_fr_map {
817 	uint32_t base;
818 	uint32_t cum;
819 	uint32_t high;
820 };
821 
822 struct sctp_rwnd_log {
823 	uint32_t rwnd;
824 	uint32_t send_size;
825 	uint32_t overhead;
826 	uint32_t new_rwnd;
827 };
828 
829 struct sctp_mbcnt_log {
830 	uint32_t total_queue_size;
831 	uint32_t size_change;
832 	uint32_t total_queue_mb_size;
833 	uint32_t mbcnt_change;
834 };
835 
836 struct sctp_sack_log {
837 	uint32_t cumack;
838 	uint32_t oldcumack;
839 	uint32_t tsn;
840 	uint16_t numGaps;
841 	uint16_t numDups;
842 };
843 
844 struct sctp_lock_log {
845 	void *sock;		/* FIXME: LP64 issue */
846 	void *inp;		/* FIXME: LP64 issue */
847 	uint8_t tcb_lock;
848 	uint8_t inp_lock;
849 	uint8_t info_lock;
850 	uint8_t sock_lock;
851 	uint8_t sockrcvbuf_lock;
852 	uint8_t socksndbuf_lock;
853 	uint8_t create_lock;
854 	uint8_t resv;
855 };
856 
857 struct sctp_rto_log {
858 	void *net;		/* FIXME: LP64 issue */
859 	uint32_t rtt;
860 };
861 
862 struct sctp_nagle_log {
863 	void *stcb;		/* FIXME: LP64 issue */
864 	uint32_t total_flight;
865 	uint32_t total_in_queue;
866 	uint16_t count_in_queue;
867 	uint16_t count_in_flight;
868 };
869 
870 struct sctp_sbwake_log {
871 	void *stcb;		/* FIXME: LP64 issue */
872 	uint16_t send_q;
873 	uint16_t sent_q;
874 	uint16_t flight;
875 	uint16_t wake_cnt;
876 	uint8_t stream_qcnt;	/* chnk cnt */
877 	uint8_t chunks_on_oque;	/* chunks out */
878 	uint8_t sbflags;
879 	uint8_t sctpflags;
880 };
881 
882 struct sctp_misc_info {
883 	uint32_t log1;
884 	uint32_t log2;
885 	uint32_t log3;
886 	uint32_t log4;
887 };
888 
889 struct sctp_log_closing {
890 	void *inp;		/* FIXME: LP64 issue */
891 	void *stcb;		/* FIXME: LP64 issue */
892 	uint32_t sctp_flags;
893 	uint16_t state;
894 	int16_t loc;
895 };
896 
897 struct sctp_mbuf_log {
898 	struct mbuf *mp;	/* FIXME: LP64 issue */
899 	caddr_t ext;
900 	caddr_t data;
901 	uint16_t size;
902 	uint8_t refcnt;
903 	uint8_t mbuf_flags;
904 };
905 
906 struct sctp_cwnd_log {
907 	uint64_t time_event;
908 	uint8_t from;
909 	uint8_t event_type;
910 	uint8_t resv[2];
911 	union {
912 		struct sctp_log_closing close;
913 		struct sctp_blk_args blk;
914 		struct sctp_cwnd_args cwnd;
915 		struct sctp_str_log strlog;
916 		struct sctp_fr_log fr;
917 		struct sctp_fr_map map;
918 		struct sctp_rwnd_log rwnd;
919 		struct sctp_mbcnt_log mbcnt;
920 		struct sctp_sack_log sack;
921 		struct sctp_lock_log lock;
922 		struct sctp_rto_log rto;
923 		struct sctp_sb_log sb;
924 		struct sctp_nagle_log nagle;
925 		struct sctp_sbwake_log wake;
926 		struct sctp_mbuf_log mb;
927 		struct sctp_misc_info misc;
928 	}     x;
929 };
930 
931 struct sctp_cwnd_log_req {
932 	int32_t num_in_log;	/* Number in log */
933 	int32_t num_ret;	/* Number returned */
934 	int32_t start_at;	/* start at this one */
935 	int32_t end_at;		/* end at this one */
936 	struct sctp_cwnd_log log[];
937 };
938 
939 struct sctp_timeval {
940 	uint32_t tv_sec;
941 	uint32_t tv_usec;
942 };
943 
944 struct sctpstat {
945 	struct sctp_timeval sctps_discontinuitytime;	/* sctpStats 18
946 							 * (TimeStamp) */
947 	/* MIB according to RFC 3873 */
948 	uint32_t sctps_currestab;	/* sctpStats  1   (Gauge32) */
949 	uint32_t sctps_activeestab;	/* sctpStats  2 (Counter32) */
950 	uint32_t sctps_restartestab;
951 	uint32_t sctps_collisionestab;
952 	uint32_t sctps_passiveestab;	/* sctpStats  3 (Counter32) */
953 	uint32_t sctps_aborted;	/* sctpStats  4 (Counter32) */
954 	uint32_t sctps_shutdown;	/* sctpStats  5 (Counter32) */
955 	uint32_t sctps_outoftheblue;	/* sctpStats  6 (Counter32) */
956 	uint32_t sctps_checksumerrors;	/* sctpStats  7 (Counter32) */
957 	uint32_t sctps_outcontrolchunks;	/* sctpStats  8 (Counter64) */
958 	uint32_t sctps_outorderchunks;	/* sctpStats  9 (Counter64) */
959 	uint32_t sctps_outunorderchunks;	/* sctpStats 10 (Counter64) */
960 	uint32_t sctps_incontrolchunks;	/* sctpStats 11 (Counter64) */
961 	uint32_t sctps_inorderchunks;	/* sctpStats 12 (Counter64) */
962 	uint32_t sctps_inunorderchunks;	/* sctpStats 13 (Counter64) */
963 	uint32_t sctps_fragusrmsgs;	/* sctpStats 14 (Counter64) */
964 	uint32_t sctps_reasmusrmsgs;	/* sctpStats 15 (Counter64) */
965 	uint32_t sctps_outpackets;	/* sctpStats 16 (Counter64) */
966 	uint32_t sctps_inpackets;	/* sctpStats 17 (Counter64) */
967 
968 	/* input statistics: */
969 	uint32_t sctps_recvpackets;	/* total input packets        */
970 	uint32_t sctps_recvdatagrams;	/* total input datagrams      */
971 	uint32_t sctps_recvpktwithdata;	/* total packets that had data */
972 	uint32_t sctps_recvsacks;	/* total input SACK chunks    */
973 	uint32_t sctps_recvdata;	/* total input DATA chunks    */
974 	uint32_t sctps_recvdupdata;	/* total input duplicate DATA chunks */
975 	uint32_t sctps_recvheartbeat;	/* total input HB chunks      */
976 	uint32_t sctps_recvheartbeatack;	/* total input HB-ACK chunks  */
977 	uint32_t sctps_recvecne;	/* total input ECNE chunks    */
978 	uint32_t sctps_recvauth;	/* total input AUTH chunks    */
979 	uint32_t sctps_recvauthmissing;	/* total input chunks missing AUTH */
980 	uint32_t sctps_recvivalhmacid;	/* total number of invalid HMAC ids
981 					 * received */
982 	uint32_t sctps_recvivalkeyid;	/* total number of invalid secret ids
983 					 * received */
984 	uint32_t sctps_recvauthfailed;	/* total number of auth failed */
985 	uint32_t sctps_recvexpress;	/* total fast path receives all one
986 					 * chunk */
987 	uint32_t sctps_recvexpressm;	/* total fast path multi-part data */
988 	uint32_t sctps_recv_spare;	/* formerly sctps_recvnocrc */
989 	uint32_t sctps_recvswcrc;
990 	uint32_t sctps_recvhwcrc;
991 
992 	/* output statistics: */
993 	uint32_t sctps_sendpackets;	/* total output packets       */
994 	uint32_t sctps_sendsacks;	/* total output SACKs         */
995 	uint32_t sctps_senddata;	/* total output DATA chunks   */
996 	uint32_t sctps_sendretransdata;	/* total output retransmitted DATA
997 					 * chunks */
998 	uint32_t sctps_sendfastretrans;	/* total output fast retransmitted
999 					 * DATA chunks */
1000 	uint32_t sctps_sendmultfastretrans;	/* total FR's that happened
1001 						 * more than once to same
1002 						 * chunk (u-del multi-fr
1003 						 * algo). */
1004 	uint32_t sctps_sendheartbeat;	/* total output HB chunks     */
1005 	uint32_t sctps_sendecne;	/* total output ECNE chunks    */
1006 	uint32_t sctps_sendauth;	/* total output AUTH chunks FIXME   */
1007 	uint32_t sctps_senderrors;	/* ip_output error counter */
1008 	uint32_t sctps_send_spare;	/* formerly sctps_sendnocrc */
1009 	uint32_t sctps_sendswcrc;
1010 	uint32_t sctps_sendhwcrc;
1011 	/* PCKDROPREP statistics: */
1012 	uint32_t sctps_pdrpfmbox;	/* Packet drop from middle box */
1013 	uint32_t sctps_pdrpfehos;	/* P-drop from end host */
1014 	uint32_t sctps_pdrpmbda;	/* P-drops with data */
1015 	uint32_t sctps_pdrpmbct;	/* P-drops, non-data, non-endhost */
1016 	uint32_t sctps_pdrpbwrpt;	/* P-drop, non-endhost, bandwidth rep
1017 					 * only */
1018 	uint32_t sctps_pdrpcrupt;	/* P-drop, not enough for chunk header */
1019 	uint32_t sctps_pdrpnedat;	/* P-drop, not enough data to confirm */
1020 	uint32_t sctps_pdrppdbrk;	/* P-drop, where process_chunk_drop
1021 					 * said break */
1022 	uint32_t sctps_pdrptsnnf;	/* P-drop, could not find TSN */
1023 	uint32_t sctps_pdrpdnfnd;	/* P-drop, attempt reverse TSN lookup */
1024 	uint32_t sctps_pdrpdiwnp;	/* P-drop, e-host confirms zero-rwnd */
1025 	uint32_t sctps_pdrpdizrw;	/* P-drop, midbox confirms no space */
1026 	uint32_t sctps_pdrpbadd;	/* P-drop, data did not match TSN */
1027 	uint32_t sctps_pdrpmark;	/* P-drop, TSN's marked for Fast
1028 					 * Retran */
1029 	/* timeouts */
1030 	uint32_t sctps_timoiterator;	/* Number of iterator timers that
1031 					 * fired */
1032 	uint32_t sctps_timodata;	/* Number of T3 data time outs */
1033 	uint32_t sctps_timowindowprobe;	/* Number of window probe (T3) timers
1034 					 * that fired */
1035 	uint32_t sctps_timoinit;	/* Number of INIT timers that fired */
1036 	uint32_t sctps_timosack;	/* Number of sack timers that fired */
1037 	uint32_t sctps_timoshutdown;	/* Number of shutdown timers that
1038 					 * fired */
1039 	uint32_t sctps_timoheartbeat;	/* Number of heartbeat timers that
1040 					 * fired */
1041 	uint32_t sctps_timocookie;	/* Number of times a cookie timeout
1042 					 * fired */
1043 	uint32_t sctps_timosecret;	/* Number of times an endpoint changed
1044 					 * its cookie secret */
1045 	uint32_t sctps_timopathmtu;	/* Number of PMTU timers that fired */
1046 	uint32_t sctps_timoshutdownack;	/* Number of shutdown ack timers that
1047 					 * fired */
1048 	uint32_t sctps_timoshutdownguard;	/* Number of shutdown guard
1049 						 * timers that fired */
1050 	uint32_t sctps_timostrmrst;	/* Number of stream reset timers that
1051 					 * fired */
1052 	uint32_t sctps_timoearlyfr;	/* Number of early FR timers that
1053 					 * fired */
1054 	uint32_t sctps_timoasconf;	/* Number of times an asconf timer
1055 					 * fired */
1056 	uint32_t sctps_timodelprim;	/* Number of times a prim_deleted
1057 					 * timer fired */
1058 	uint32_t sctps_timoautoclose;	/* Number of times auto close timer
1059 					 * fired */
1060 	uint32_t sctps_timoassockill;	/* Number of asoc free timers expired */
1061 	uint32_t sctps_timoinpkill;	/* Number of inp free timers expired */
1062 	/* former early FR counters */
1063 	uint32_t sctps_spare[11];
1064 	/* others */
1065 	uint32_t sctps_hdrops;	/* packet shorter than header */
1066 	uint32_t sctps_badsum;	/* checksum error             */
1067 	uint32_t sctps_noport;	/* no endpoint for port       */
1068 	uint32_t sctps_badvtag;	/* bad v-tag                  */
1069 	uint32_t sctps_badsid;	/* bad SID                    */
1070 	uint32_t sctps_nomem;	/* no memory                  */
1071 	uint32_t sctps_fastretransinrtt;	/* number of multiple FR in a
1072 						 * RTT window */
1073 	uint32_t sctps_markedretrans;
1074 	uint32_t sctps_naglesent;	/* nagle allowed sending      */
1075 	uint32_t sctps_naglequeued;	/* nagle doesn't allow sending */
1076 	uint32_t sctps_maxburstqueued;	/* max burst doesn't allow sending */
1077 	uint32_t sctps_ifnomemqueued;	/* look ahead tells us no memory in
1078 					 * interface ring buffer OR we had a
1079 					 * send error and are queuing one
1080 					 * send. */
1081 	uint32_t sctps_windowprobed;	/* total number of window probes sent */
1082 	uint32_t sctps_lowlevelerr;	/* total times an output error causes
1083 					 * us to clamp down on next user send. */
1084 	uint32_t sctps_lowlevelerrusr;	/* total times sctp_senderrors were
1085 					 * caused from a user send from a user
1086 					 * invoked send not a sack response */
1087 	uint32_t sctps_datadropchklmt;	/* Number of in data drops due to
1088 					 * chunk limit reached */
1089 	uint32_t sctps_datadroprwnd;	/* Number of in data drops due to rwnd
1090 					 * limit reached */
1091 	uint32_t sctps_ecnereducedcwnd;	/* Number of times a ECN reduced the
1092 					 * cwnd */
1093 	uint32_t sctps_vtagexpress;	/* Used express lookup via vtag */
1094 	uint32_t sctps_vtagbogus;	/* Collision in express lookup. */
1095 	uint32_t sctps_primary_randry;	/* Number of times the sender ran dry
1096 					 * of user data on primary */
1097 	uint32_t sctps_cmt_randry;	/* Same for above */
1098 	uint32_t sctps_slowpath_sack;	/* Sacks the slow way */
1099 	uint32_t sctps_wu_sacks_sent;	/* Window Update only sacks sent */
1100 	uint32_t sctps_sends_with_flags;	/* number of sends with
1101 						 * sinfo_flags !=0 */
1102 	uint32_t sctps_sends_with_unord;	/* number of unordered sends */
1103 	uint32_t sctps_sends_with_eof;	/* number of sends with EOF flag set */
1104 	uint32_t sctps_sends_with_abort;	/* number of sends with ABORT
1105 						 * flag set */
1106 	uint32_t sctps_protocol_drain_calls;	/* number of times protocol
1107 						 * drain called */
1108 	uint32_t sctps_protocol_drains_done;	/* number of times we did a
1109 						 * protocol drain */
1110 	uint32_t sctps_read_peeks;	/* Number of times recv was called
1111 					 * with peek */
1112 	uint32_t sctps_cached_chk;	/* Number of cached chunks used */
1113 	uint32_t sctps_cached_strmoq;	/* Number of cached stream oq's used */
1114 	uint32_t sctps_left_abandon;	/* Number of unread messages abandoned
1115 					 * by close */
1116 	uint32_t sctps_send_burst_avoid;	/* Unused */
1117 	uint32_t sctps_send_cwnd_avoid;	/* Send cwnd full  avoidance, already
1118 					 * max burst inflight to net */
1119 	uint32_t sctps_fwdtsn_map_over;	/* number of map array over-runs via
1120 					 * fwd-tsn's */
1121 	uint32_t sctps_queue_upd_ecne;	/* Number of times we queued or
1122 					 * updated an ECN chunk on send queue */
1123 	uint32_t sctps_recvzerocrc;	/* Number of accepted packets with
1124 					 * zero CRC */
1125 	uint32_t sctps_sendzerocrc;	/* Number of packets sent with zero
1126 					 * CRC */
1127 	uint32_t sctps_reserved[29];	/* Future ABI compat - remove int's
1128 					 * from here when adding new */
1129 };
1130 
1131 #define SCTP_STAT_INCR(_x) SCTP_STAT_INCR_BY(_x,1)
1132 #define SCTP_STAT_DECR(_x) SCTP_STAT_DECR_BY(_x,1)
1133 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
1134 #define SCTP_STAT_INCR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x += _d)
1135 #define SCTP_STAT_DECR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x -= _d)
1136 #else
1137 #define SCTP_STAT_INCR_BY(_x,_d) atomic_add_int(&SCTP_BASE_STAT(_x), _d)
1138 #define SCTP_STAT_DECR_BY(_x,_d) atomic_subtract_int(&SCTP_BASE_STAT(_x), _d)
1139 #endif
1140 /* The following macros are for handling MIB values, */
1141 #define SCTP_STAT_INCR_COUNTER32(_x) SCTP_STAT_INCR(_x)
1142 #define SCTP_STAT_INCR_COUNTER64(_x) SCTP_STAT_INCR(_x)
1143 #define SCTP_STAT_INCR_GAUGE32(_x) SCTP_STAT_INCR(_x)
1144 #define SCTP_STAT_DECR_COUNTER32(_x) SCTP_STAT_DECR(_x)
1145 #define SCTP_STAT_DECR_COUNTER64(_x) SCTP_STAT_DECR(_x)
1146 #define SCTP_STAT_DECR_GAUGE32(_x) SCTP_STAT_DECR(_x)
1147 
1148 /***********************************/
1149 /* And something for us old timers */
1150 /***********************************/
1151 
1152 #ifndef ntohll
1153 #include <sys/endian.h>
1154 #define ntohll(x) be64toh(x)
1155 #endif
1156 
1157 #ifndef htonll
1158 #include <sys/endian.h>
1159 #define htonll(x) htobe64(x)
1160 #endif
1161 /***********************************/
1162 
1163 struct xsctp_inpcb {
1164 	uint32_t last;
1165 	uint32_t flags;
1166 	uint64_t features;
1167 	uint32_t total_sends;
1168 	uint32_t total_recvs;
1169 	uint32_t total_nospaces;
1170 	uint32_t fragmentation_point;
1171 	uint16_t local_port;
1172 	uint16_t qlen_old;
1173 	uint16_t maxqlen_old;
1174 	uint16_t __spare16;
1175 	kvaddr_t socket;
1176 	uint32_t qlen;
1177 	uint32_t maxqlen;
1178 	uint32_t extra_padding[26];	/* future */
1179 };
1180 
1181 struct xsctp_tcb {
1182 	union sctp_sockstore primary_addr;	/* sctpAssocEntry 5/6 */
1183 	uint32_t last;
1184 	uint32_t heartbeat_interval;	/* sctpAssocEntry 7   */
1185 	uint32_t state;		/* sctpAssocEntry 8   */
1186 	uint32_t in_streams;	/* sctpAssocEntry 9   */
1187 	uint32_t out_streams;	/* sctpAssocEntry 10  */
1188 	uint32_t max_nr_retrans;	/* sctpAssocEntry 11  */
1189 	uint32_t primary_process;	/* sctpAssocEntry 12  */
1190 	uint32_t T1_expireries;	/* sctpAssocEntry 13  */
1191 	uint32_t T2_expireries;	/* sctpAssocEntry 14  */
1192 	uint32_t retransmitted_tsns;	/* sctpAssocEntry 15  */
1193 	uint32_t total_sends;
1194 	uint32_t total_recvs;
1195 	uint32_t local_tag;
1196 	uint32_t remote_tag;
1197 	uint32_t initial_tsn;
1198 	uint32_t highest_tsn;
1199 	uint32_t cumulative_tsn;
1200 	uint32_t cumulative_tsn_ack;
1201 	uint32_t mtu;
1202 	uint32_t refcnt;
1203 	uint16_t local_port;	/* sctpAssocEntry 3   */
1204 	uint16_t remote_port;	/* sctpAssocEntry 4   */
1205 	struct sctp_timeval start_time;	/* sctpAssocEntry 16  */
1206 	struct sctp_timeval discontinuity_time;	/* sctpAssocEntry 17  */
1207 	uint32_t peers_rwnd;
1208 	sctp_assoc_t assoc_id;	/* sctpAssocEntry 1   */
1209 	uint32_t extra_padding[32];	/* future */
1210 };
1211 
1212 struct xsctp_laddr {
1213 	union sctp_sockstore address;	/* sctpAssocLocalAddrEntry 1/2 */
1214 	uint32_t last;
1215 	struct sctp_timeval start_time;	/* sctpAssocLocalAddrEntry 3   */
1216 	uint32_t extra_padding[32];	/* future */
1217 };
1218 
1219 struct xsctp_raddr {
1220 	union sctp_sockstore address;	/* sctpAssocLocalRemEntry 1/2 */
1221 	uint32_t last;
1222 	uint32_t rto;		/* sctpAssocLocalRemEntry 5   */
1223 	uint32_t max_path_rtx;	/* sctpAssocLocalRemEntry 6   */
1224 	uint32_t rtx;		/* sctpAssocLocalRemEntry 7   */
1225 	uint32_t error_counter;	/* */
1226 	uint32_t cwnd;		/* */
1227 	uint32_t flight_size;	/* */
1228 	uint32_t mtu;		/* */
1229 	uint8_t active;		/* sctpAssocLocalRemEntry 3   */
1230 	uint8_t confirmed;	/* */
1231 	uint8_t heartbeat_enabled;	/* sctpAssocLocalRemEntry 4   */
1232 	uint8_t potentially_failed;
1233 	struct sctp_timeval start_time;	/* sctpAssocLocalRemEntry 8   */
1234 	uint32_t rtt;
1235 	uint32_t heartbeat_interval;
1236 	uint32_t ssthresh;
1237 	uint16_t encaps_port;
1238 	uint16_t state;
1239 	uint32_t extra_padding[29];	/* future */
1240 };
1241 
1242 #define SCTP_MAX_LOGGING_SIZE 30000
1243 #define SCTP_TRACE_PARAMS 6	/* This number MUST be even   */
1244 
1245 struct sctp_log_entry {
1246 	uint64_t timestamp;
1247 	uint32_t subsys;
1248 	uint32_t padding;
1249 	uint32_t params[SCTP_TRACE_PARAMS];
1250 };
1251 
1252 struct sctp_log {
1253 	struct sctp_log_entry entry[SCTP_MAX_LOGGING_SIZE];
1254 	uint32_t index;
1255 	uint32_t padding;
1256 };
1257 
1258 /*
1259  * Kernel defined for sctp_send
1260  */
1261 #if defined(_KERNEL) || defined(__Userspace__)
1262 int
1263 sctp_lower_sosend(struct socket *so,
1264     struct sockaddr *addr,
1265     struct uio *uio,
1266     struct mbuf *top,
1267     struct mbuf *control,
1268     int flags,
1269     struct sctp_sndrcvinfo *srcv
1270     ,struct thread *p
1271 );
1272 
1273 int
1274 sctp_sorecvmsg(struct socket *so,
1275     struct uio *uio,
1276     struct mbuf **mp,
1277     struct sockaddr *from,
1278     int fromlen,
1279     int *msg_flags,
1280     struct sctp_sndrcvinfo *sinfo,
1281     int filling_sinfo);
1282 #endif
1283 
1284 /*
1285  * API system calls
1286  */
1287 #if !(defined(_KERNEL)) && !(defined(__Userspace__))
1288 
1289 __BEGIN_DECLS
1290 int sctp_peeloff(int, sctp_assoc_t);
1291 int sctp_bindx(int, struct sockaddr *, int, int);
1292 int sctp_connectx(int, const struct sockaddr *, int, sctp_assoc_t *);
1293 int sctp_getaddrlen(sa_family_t);
1294 int sctp_getpaddrs(int, sctp_assoc_t, struct sockaddr **);
1295 void sctp_freepaddrs(struct sockaddr *);
1296 int sctp_getladdrs(int, sctp_assoc_t, struct sockaddr **);
1297 void sctp_freeladdrs(struct sockaddr *);
1298 int sctp_opt_info(int, sctp_assoc_t, int, void *, socklen_t *);
1299 
1300 /* deprecated */
1301 ssize_t
1302 sctp_sendmsg(int, const void *, size_t, const struct sockaddr *,
1303     socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
1304 
1305 /* deprecated */
1306 ssize_t
1307 sctp_send(int, const void *, size_t,
1308     const struct sctp_sndrcvinfo *, int);
1309 
1310 /* deprecated */
1311 ssize_t
1312 sctp_sendx(int, const void *, size_t, struct sockaddr *,
1313     int, struct sctp_sndrcvinfo *, int);
1314 
1315 /* deprecated */
1316 ssize_t
1317 sctp_sendmsgx(int sd, const void *, size_t, struct sockaddr *,
1318     int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
1319 
1320 sctp_assoc_t sctp_getassocid(int, struct sockaddr *);
1321 
1322 /* deprecated */
1323 ssize_t
1324 sctp_recvmsg(int, void *, size_t, struct sockaddr *, socklen_t *,
1325     struct sctp_sndrcvinfo *, int *);
1326 
1327 ssize_t
1328 sctp_sendv(int, const struct iovec *, int, struct sockaddr *,
1329     int, void *, socklen_t, unsigned int, int);
1330 
1331 ssize_t
1332 sctp_recvv(int, const struct iovec *, int, struct sockaddr *,
1333     socklen_t *, void *, socklen_t *, unsigned int *, int *);
1334 
1335 __END_DECLS
1336 
1337 #endif				/* !_KERNEL */
1338 #endif				/* !__sctp_uio_h__ */
1339