2 * Copyright (c) 2009-2010 Brad Penoff
3 * Copyright (c) 2009-2010 Humaira Kamal
4 * Copyright (c) 2011-2012 Irene Ruengeler
5 * Copyright (c) 2011-2012 Michael Tuexen
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #include <sys/types.h>
42 #pragma warning(disable: 4200)
47 #include <sys/socket.h>
48 #include <netinet/in.h>
51 #ifndef MSG_NOTIFICATION
52 /* This definition MUST be in sync with usrsctplib/user_socketvar.h */
53 #define MSG_NOTIFICATION 0x2000
57 /* This is the IANA assigned protocol number of SCTP. */
58 #define IPPROTO_SCTP 132
62 #if defined(_MSC_VER) && _MSC_VER >= 1600
64 #elif defined(SCTP_STDINT_INCLUDE)
65 #include SCTP_STDINT_INCLUDE
67 #define uint8_t unsigned __int8
68 #define uint16_t unsigned __int16
69 #define uint32_t unsigned __int32
70 #define int16_t __int16
71 #define int32_t __int32
74 #define ssize_t __int64
77 #define EWOULDBLOCK WSAEWOULDBLOCK
80 #define EINPROGRESS WSAEINPROGRESS
87 typedef uint32_t sctp_assoc_t;
90 /* The definition of struct sockaddr_conn MUST be in
91 * tune with other sockaddr_* structures.
93 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__)
94 struct sockaddr_conn {
101 struct sockaddr_conn {
102 uint16_t sconn_family;
108 union sctp_sockstore {
110 struct sockaddr_in sin;
113 struct sockaddr_in6 sin6;
115 struct sockaddr_conn sconn;
119 #define SCTP_FUTURE_ASSOC 0
120 #define SCTP_CURRENT_ASSOC 1
121 #define SCTP_ALL_ASSOC 2
123 /*** Structures and definitions to use the socket API ***/
125 #define SCTP_ALIGN_RESV_PAD 92
126 #define SCTP_ALIGN_RESV_PAD_SHORT 76
128 struct sctp_rcvinfo {
135 uint32_t rcv_context;
136 sctp_assoc_t rcv_assoc_id;
139 struct sctp_nxtinfo {
144 sctp_assoc_t nxt_assoc_id;
147 #define SCTP_NO_NEXT_MSG 0x0000
148 #define SCTP_NEXT_MSG_AVAIL 0x0001
149 #define SCTP_NEXT_MSG_ISCOMPLETE 0x0002
150 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
151 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
153 struct sctp_recvv_rn {
154 struct sctp_rcvinfo recvv_rcvinfo;
155 struct sctp_nxtinfo recvv_nxtinfo;
158 #define SCTP_RECVV_NOINFO 0
159 #define SCTP_RECVV_RCVINFO 1
160 #define SCTP_RECVV_NXTINFO 2
161 #define SCTP_RECVV_RN 3
163 #define SCTP_SENDV_NOINFO 0
164 #define SCTP_SENDV_SNDINFO 1
165 #define SCTP_SENDV_PRINFO 2
166 #define SCTP_SENDV_AUTHINFO 3
167 #define SCTP_SENDV_SPA 4
169 #define SCTP_SEND_SNDINFO_VALID 0x00000001
170 #define SCTP_SEND_PRINFO_VALID 0x00000002
171 #define SCTP_SEND_AUTHINFO_VALID 0x00000004
173 struct sctp_snd_all_completes {
174 uint16_t sall_stream;
177 uint32_t sall_context;
178 uint32_t sall_num_sent;
179 uint32_t sall_num_failed;
182 struct sctp_sndinfo {
186 uint32_t snd_context;
187 sctp_assoc_t snd_assoc_id;
195 struct sctp_authinfo {
196 uint16_t auth_keynumber;
199 struct sctp_sendv_spa {
200 uint32_t sendv_flags;
201 struct sctp_sndinfo sendv_sndinfo;
202 struct sctp_prinfo sendv_prinfo;
203 struct sctp_authinfo sendv_authinfo;
206 struct sctp_udpencaps {
207 struct sockaddr_storage sue_address;
208 uint32_t sue_assoc_id;
212 /******** Notifications **************/
214 /* notification types */
215 #define SCTP_ASSOC_CHANGE 0x0001
216 #define SCTP_PEER_ADDR_CHANGE 0x0002
217 #define SCTP_REMOTE_ERROR 0x0003
218 #define SCTP_SEND_FAILED 0x0004
219 #define SCTP_SHUTDOWN_EVENT 0x0005
220 #define SCTP_ADAPTATION_INDICATION 0x0006
221 #define SCTP_PARTIAL_DELIVERY_EVENT 0x0007
222 #define SCTP_AUTHENTICATION_EVENT 0x0008
223 #define SCTP_STREAM_RESET_EVENT 0x0009
224 #define SCTP_SENDER_DRY_EVENT 0x000a
225 #define SCTP_NOTIFICATIONS_STOPPED_EVENT 0x000b
226 #define SCTP_ASSOC_RESET_EVENT 0x000c
227 #define SCTP_STREAM_CHANGE_EVENT 0x000d
228 #define SCTP_SEND_FAILED_EVENT 0x000e
230 /* notification event structures */
233 /* association change event */
234 struct sctp_assoc_change {
240 uint16_t sac_outbound_streams;
241 uint16_t sac_inbound_streams;
242 sctp_assoc_t sac_assoc_id;
243 uint8_t sac_info[]; /* not available yet */
246 /* sac_state values */
247 #define SCTP_COMM_UP 0x0001
248 #define SCTP_COMM_LOST 0x0002
249 #define SCTP_RESTART 0x0003
250 #define SCTP_SHUTDOWN_COMP 0x0004
251 #define SCTP_CANT_STR_ASSOC 0x0005
253 /* sac_info values */
254 #define SCTP_ASSOC_SUPPORTS_PR 0x01
255 #define SCTP_ASSOC_SUPPORTS_AUTH 0x02
256 #define SCTP_ASSOC_SUPPORTS_ASCONF 0x03
257 #define SCTP_ASSOC_SUPPORTS_MULTIBUF 0x04
258 #define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05
259 #define SCTP_ASSOC_SUPPORTS_MAX 0x05
262 struct sctp_paddr_change {
266 struct sockaddr_storage spc_aaddr;
269 sctp_assoc_t spc_assoc_id;
270 uint8_t spc_padding[4];
273 /* paddr state values */
274 #define SCTP_ADDR_AVAILABLE 0x0001
275 #define SCTP_ADDR_UNREACHABLE 0x0002
276 #define SCTP_ADDR_REMOVED 0x0003
277 #define SCTP_ADDR_ADDED 0x0004
278 #define SCTP_ADDR_MADE_PRIM 0x0005
279 #define SCTP_ADDR_CONFIRMED 0x0006
281 /* remote error events */
282 struct sctp_remote_error {
287 sctp_assoc_t sre_assoc_id;
292 struct sctp_shutdown_event {
296 sctp_assoc_t sse_assoc_id;
299 /* Adaptation layer indication */
300 struct sctp_adaptation_event {
304 uint32_t sai_adaptation_ind;
305 sctp_assoc_t sai_assoc_id;
308 /* Partial delivery event */
309 struct sctp_pdapi_event {
311 uint16_t pdapi_flags;
312 uint32_t pdapi_length;
313 uint32_t pdapi_indication;
314 uint32_t pdapi_stream;
316 sctp_assoc_t pdapi_assoc_id;
319 /* indication values */
320 #define SCTP_PARTIAL_DELIVERY_ABORTED 0x0001
322 /* SCTP authentication event */
323 struct sctp_authkey_event {
326 uint32_t auth_length;
327 uint16_t auth_keynumber;
328 uint32_t auth_indication;
329 sctp_assoc_t auth_assoc_id;
332 /* indication values */
333 #define SCTP_AUTH_NEW_KEY 0x0001
334 #define SCTP_AUTH_NO_AUTH 0x0002
335 #define SCTP_AUTH_FREE_KEY 0x0003
337 /* SCTP sender dry event */
338 struct sctp_sender_dry_event {
339 uint16_t sender_dry_type;
340 uint16_t sender_dry_flags;
341 uint32_t sender_dry_length;
342 sctp_assoc_t sender_dry_assoc_id;
346 /* Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT */
347 struct sctp_stream_reset_event {
348 uint16_t strreset_type;
349 uint16_t strreset_flags;
350 uint32_t strreset_length;
351 sctp_assoc_t strreset_assoc_id;
352 uint16_t strreset_stream_list[];
355 /* flags in stream_reset_event (strreset_flags) */
356 #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001
357 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002
358 #define SCTP_STREAM_RESET_DENIED 0x0004 /* SCTP_STRRESET_FAILED */
359 #define SCTP_STREAM_RESET_FAILED 0x0008 /* SCTP_STRRESET_FAILED */
360 #define SCTP_STREAM_CHANGED_DENIED 0x0010
362 #define SCTP_STREAM_RESET_INCOMING 0x00000001
363 #define SCTP_STREAM_RESET_OUTGOING 0x00000002
366 /* Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT */
367 struct sctp_assoc_reset_event {
368 uint16_t assocreset_type;
369 uint16_t assocreset_flags;
370 uint32_t assocreset_length;
371 sctp_assoc_t assocreset_assoc_id;
372 uint32_t assocreset_local_tsn;
373 uint32_t assocreset_remote_tsn;
376 #define SCTP_ASSOC_RESET_DENIED 0x0004
377 #define SCTP_ASSOC_RESET_FAILED 0x0008
380 /* Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT */
381 struct sctp_stream_change_event {
382 uint16_t strchange_type;
383 uint16_t strchange_flags;
384 uint32_t strchange_length;
385 sctp_assoc_t strchange_assoc_id;
386 uint16_t strchange_instrms;
387 uint16_t strchange_outstrms;
390 #define SCTP_STREAM_CHANGE_DENIED 0x0004
391 #define SCTP_STREAM_CHANGE_FAILED 0x0008
394 /* SCTP send failed event */
395 struct sctp_send_failed_event {
398 uint32_t ssfe_length;
400 struct sctp_sndinfo ssfe_info;
401 sctp_assoc_t ssfe_assoc_id;
405 /* flag that indicates state of data */
406 #define SCTP_DATA_UNSENT 0x0001 /* inqueue never on wire */
407 #define SCTP_DATA_SENT 0x0002 /* on wire at failure */
409 /* SCTP event option */
411 sctp_assoc_t se_assoc_id;
416 union sctp_notification {
422 struct sctp_assoc_change sn_assoc_change;
423 struct sctp_paddr_change sn_paddr_change;
424 struct sctp_remote_error sn_remote_error;
425 struct sctp_shutdown_event sn_shutdown_event;
426 struct sctp_adaptation_event sn_adaptation_event;
427 struct sctp_pdapi_event sn_pdapi_event;
428 struct sctp_authkey_event sn_auth_event;
429 struct sctp_sender_dry_event sn_sender_dry_event;
430 struct sctp_send_failed_event sn_send_failed_event;
431 struct sctp_stream_reset_event sn_strreset_event;
432 struct sctp_assoc_reset_event sn_assocreset_event;
433 struct sctp_stream_change_event sn_strchange_event;
436 struct sctp_event_subscribe {
437 uint8_t sctp_data_io_event;
438 uint8_t sctp_association_event;
439 uint8_t sctp_address_event;
440 uint8_t sctp_send_failure_event;
441 uint8_t sctp_peer_error_event;
442 uint8_t sctp_shutdown_event;
443 uint8_t sctp_partial_delivery_event;
444 uint8_t sctp_adaptation_layer_event;
445 uint8_t sctp_authentication_event;
446 uint8_t sctp_sender_dry_event;
447 uint8_t sctp_stream_reset_event;
452 /* Flags that go into the sinfo->sinfo_flags field */
453 #define SCTP_NOTIFICATION 0x0010 /* next message is a notification */
454 #define SCTP_COMPLETE 0x0020 /* next message is complete */
455 #define SCTP_EOF 0x0100 /* Start shutdown procedures */
456 #define SCTP_ABORT 0x0200 /* Send an ABORT to peer */
457 #define SCTP_UNORDERED 0x0400 /* Message is un-ordered */
458 #define SCTP_ADDR_OVER 0x0800 /* Override the primary-address */
459 #define SCTP_SENDALL 0x1000 /* Send this on all associations */
460 #define SCTP_EOR 0x2000 /* end of message signal */
461 #define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */
463 #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
464 & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
465 SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
466 SCTP_SACK_IMMEDIATELY)) != 0)
467 /* for the endpoint */
469 /* The lower byte is an enumeration of PR-SCTP policies */
470 #define SCTP_PR_SCTP_NONE 0x0000 /* Reliable transfer */
471 #define SCTP_PR_SCTP_TTL 0x0001 /* Time based PR-SCTP */
472 #define SCTP_PR_SCTP_BUF 0x0002 /* Buffer based PR-SCTP */
473 #define SCTP_PR_SCTP_RTX 0x0003 /* Number of retransmissions based PR-SCTP */
475 #define PR_SCTP_POLICY(x) ((x) & 0x0f)
476 #define PR_SCTP_ENABLED(x) (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE)
477 #define PR_SCTP_TTL_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
478 #define PR_SCTP_BUF_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
479 #define PR_SCTP_RTX_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
480 #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_RTX)
484 * user socket options: socket API defined
489 #define SCTP_RTOINFO 0x00000001
490 #define SCTP_ASSOCINFO 0x00000002
491 #define SCTP_INITMSG 0x00000003
492 #define SCTP_NODELAY 0x00000004
493 #define SCTP_AUTOCLOSE 0x00000005
494 #define SCTP_PRIMARY_ADDR 0x00000007
495 #define SCTP_ADAPTATION_LAYER 0x00000008
496 #define SCTP_DISABLE_FRAGMENTS 0x00000009
497 #define SCTP_PEER_ADDR_PARAMS 0x0000000a
498 /* ancillary data/notification interest options */
499 /* Without this applied we will give V4 and V6 addresses on a V6 socket */
500 #define SCTP_I_WANT_MAPPED_V4_ADDR 0x0000000d
501 #define SCTP_MAXSEG 0x0000000e
502 #define SCTP_DELAYED_SACK 0x0000000f
503 #define SCTP_FRAGMENT_INTERLEAVE 0x00000010
504 #define SCTP_PARTIAL_DELIVERY_POINT 0x00000011
505 /* authentication support */
506 #define SCTP_HMAC_IDENT 0x00000014
507 #define SCTP_AUTH_ACTIVE_KEY 0x00000015
508 #define SCTP_AUTO_ASCONF 0x00000018
509 #define SCTP_MAX_BURST 0x00000019
510 /* assoc level context */
511 #define SCTP_CONTEXT 0x0000001a
512 /* explicit EOR signalling */
513 #define SCTP_EXPLICIT_EOR 0x0000001b
514 #define SCTP_REUSE_PORT 0x0000001c
516 #define SCTP_EVENT 0x0000001e
517 #define SCTP_RECVRCVINFO 0x0000001f
518 #define SCTP_RECVNXTINFO 0x00000020
519 #define SCTP_DEFAULT_SNDINFO 0x00000021
520 #define SCTP_DEFAULT_PRINFO 0x00000022
521 #define SCTP_REMOTE_UDP_ENCAPS_PORT 0x00000024
523 #define SCTP_ENABLE_STREAM_RESET 0x00000900 /* struct sctp_assoc_value */
528 #define SCTP_STATUS 0x00000100
529 #define SCTP_GET_PEER_ADDR_INFO 0x00000101
530 /* authentication support */
531 #define SCTP_PEER_AUTH_CHUNKS 0x00000102
532 #define SCTP_LOCAL_AUTH_CHUNKS 0x00000103
533 #define SCTP_GET_ASSOC_NUMBER 0x00000104
534 #define SCTP_GET_ASSOC_ID_LIST 0x00000105
539 #define SCTP_SET_PEER_PRIMARY_ADDR 0x00000006
540 #define SCTP_AUTH_CHUNK 0x00000012
541 #define SCTP_AUTH_KEY 0x00000013
542 #define SCTP_AUTH_DEACTIVATE_KEY 0x0000001d
543 #define SCTP_AUTH_DELETE_KEY 0x00000016
544 #define SCTP_RESET_STREAMS 0x00000901 /* struct sctp_reset_streams */
545 #define SCTP_RESET_ASSOC 0x00000902 /* sctp_assoc_t */
546 #define SCTP_ADD_STREAMS 0x00000903 /* struct sctp_add_streams */
548 struct sctp_initmsg {
549 uint16_t sinit_num_ostreams;
550 uint16_t sinit_max_instreams;
551 uint16_t sinit_max_attempts;
552 uint16_t sinit_max_init_timeo;
555 struct sctp_rtoinfo {
556 sctp_assoc_t srto_assoc_id;
557 uint32_t srto_initial;
562 struct sctp_assocparams {
563 sctp_assoc_t sasoc_assoc_id;
564 uint32_t sasoc_peer_rwnd;
565 uint32_t sasoc_local_rwnd;
566 uint32_t sasoc_cookie_life;
567 uint16_t sasoc_asocmaxrxt;
568 uint16_t sasoc_number_peer_destinations;
571 struct sctp_setprim {
572 struct sockaddr_storage ssp_addr;
573 sctp_assoc_t ssp_assoc_id;
574 uint8_t ssp_padding[4];
577 struct sctp_setadaptation {
578 uint32_t ssb_adaptation_ind;
581 struct sctp_paddrparams {
582 struct sockaddr_storage spp_address;
583 sctp_assoc_t spp_assoc_id;
584 uint32_t spp_hbinterval;
585 uint32_t spp_pathmtu;
587 uint32_t spp_ipv6_flowlabel;
588 uint16_t spp_pathmaxrxt;
592 #define SPP_HB_ENABLE 0x00000001
593 #define SPP_HB_DISABLE 0x00000002
594 #define SPP_HB_DEMAND 0x00000004
595 #define SPP_PMTUD_ENABLE 0x00000008
596 #define SPP_PMTUD_DISABLE 0x00000010
597 #define SPP_HB_TIME_IS_ZERO 0x00000080
598 #define SPP_IPV6_FLOWLABEL 0x00000100
599 #define SPP_DSCP 0x00000200
601 /* Used for SCTP_MAXSEG, SCTP_MAX_BURST, SCTP_ENABLE_STREAM_RESET, and SCTP_CONTEXT */
602 struct sctp_assoc_value {
603 sctp_assoc_t assoc_id;
604 uint32_t assoc_value;
607 /* To enable stream reset */
608 #define SCTP_ENABLE_RESET_STREAM_REQ 0x00000001
609 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x00000002
610 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x00000004
611 #define SCTP_ENABLE_VALUE_MASK 0x00000007
613 struct sctp_reset_streams {
614 sctp_assoc_t srs_assoc_id;
616 uint16_t srs_number_streams; /* 0 == ALL */
617 uint16_t srs_stream_list[]; /* list if strrst_num_streams is not 0 */
620 struct sctp_add_streams {
621 sctp_assoc_t sas_assoc_id;
622 uint16_t sas_instrms;
623 uint16_t sas_outstrms;
626 struct sctp_hmacalgo {
627 uint32_t shmac_number_of_idents;
628 uint16_t shmac_idents[];
632 #define SCTP_AUTH_HMAC_ID_RSVD 0x0000
633 #define SCTP_AUTH_HMAC_ID_SHA1 0x0001 /* default, mandatory */
634 #define SCTP_AUTH_HMAC_ID_SHA256 0x0003
635 #define SCTP_AUTH_HMAC_ID_SHA224 0x0004
636 #define SCTP_AUTH_HMAC_ID_SHA384 0x0005
637 #define SCTP_AUTH_HMAC_ID_SHA512 0x0006
640 struct sctp_sack_info {
641 sctp_assoc_t sack_assoc_id;
646 struct sctp_default_prinfo {
649 sctp_assoc_t pr_assoc_id;
652 struct sctp_paddrinfo {
653 struct sockaddr_storage spinfo_address;
654 sctp_assoc_t spinfo_assoc_id;
655 int32_t spinfo_state;
656 uint32_t spinfo_cwnd;
657 uint32_t spinfo_srtt;
663 sctp_assoc_t sstat_assoc_id;
666 uint16_t sstat_unackdata;
667 uint16_t sstat_penddata;
668 uint16_t sstat_instrms;
669 uint16_t sstat_outstrms;
670 uint32_t sstat_fragmentation_point;
671 struct sctp_paddrinfo sstat_primary;
677 #define SCTP_CLOSED 0x0000
678 #define SCTP_BOUND 0x1000
679 #define SCTP_LISTEN 0x2000
680 #define SCTP_COOKIE_WAIT 0x0002
681 #define SCTP_COOKIE_ECHOED 0x0004
682 #define SCTP_ESTABLISHED 0x0008
683 #define SCTP_SHUTDOWN_SENT 0x0010
684 #define SCTP_SHUTDOWN_RECEIVED 0x0020
685 #define SCTP_SHUTDOWN_ACK_SENT 0x0040
686 #define SCTP_SHUTDOWN_PENDING 0x0080
689 #define SCTP_ACTIVE 0x0001 /* SCTP_ADDR_REACHABLE */
690 #define SCTP_INACTIVE 0x0002 /* neither SCTP_ADDR_REACHABLE
691 nor SCTP_ADDR_UNCONFIRMED */
692 #define SCTP_UNCONFIRMED 0x0200 /* SCTP_ADDR_UNCONFIRMED */
694 struct sctp_authchunks {
695 sctp_assoc_t gauth_assoc_id;
696 /* uint32_t gauth_number_of_chunks; not available */
697 uint8_t gauth_chunks[];
700 struct sctp_assoc_ids {
701 uint32_t gaids_number_of_ids;
702 sctp_assoc_t gaids_assoc_id[];
705 struct sctp_setpeerprim {
706 struct sockaddr_storage sspp_addr;
707 sctp_assoc_t sspp_assoc_id;
708 uint8_t sspp_padding[4];
711 struct sctp_authchunk {
716 struct sctp_get_nonce_values {
717 sctp_assoc_t gn_assoc_id;
718 uint32_t gn_peers_tag;
719 uint32_t gn_local_tag;
724 * Main SCTP chunk types
726 /************0x00 series ***********/
727 #define SCTP_DATA 0x00
728 #define SCTP_INITIATION 0x01
729 #define SCTP_INITIATION_ACK 0x02
730 #define SCTP_SELECTIVE_ACK 0x03
731 #define SCTP_HEARTBEAT_REQUEST 0x04
732 #define SCTP_HEARTBEAT_ACK 0x05
733 #define SCTP_ABORT_ASSOCIATION 0x06
734 #define SCTP_SHUTDOWN 0x07
735 #define SCTP_SHUTDOWN_ACK 0x08
736 #define SCTP_OPERATION_ERROR 0x09
737 #define SCTP_COOKIE_ECHO 0x0a
738 #define SCTP_COOKIE_ACK 0x0b
739 #define SCTP_ECN_ECHO 0x0c
740 #define SCTP_ECN_CWR 0x0d
741 #define SCTP_SHUTDOWN_COMPLETE 0x0e
743 #define SCTP_AUTHENTICATION 0x0f
744 /* EY nr_sack chunk id*/
745 #define SCTP_NR_SELECTIVE_ACK 0x10
746 /************0x40 series ***********/
747 /************0x80 series ***********/
749 #define SCTP_ASCONF_ACK 0x80
750 /* draft-ietf-stewart-pktdrpsctp */
751 #define SCTP_PACKET_DROPPED 0x81
752 /* draft-ietf-stewart-strreset-xxx */
753 #define SCTP_STREAM_RESET 0x82
756 #define SCTP_PAD_CHUNK 0x84
757 /************0xc0 series ***********/
759 #define SCTP_FORWARD_CUM_TSN 0xc0
761 #define SCTP_ASCONF 0xc1
763 struct sctp_authkey {
764 sctp_assoc_t sca_assoc_id;
765 uint16_t sca_keynumber;
766 uint16_t sca_keylength;
770 struct sctp_authkeyid {
771 sctp_assoc_t scact_assoc_id;
772 uint16_t scact_keynumber;
775 struct sctp_cc_option {
777 struct sctp_assoc_value aid_value;
780 struct sctp_cwnd_args {
781 struct sctp_nets *net; /* network to */ /* FIXME: LP64 issue */
782 uint32_t cwnd_new_value; /* cwnd in k */
783 uint32_t pseudo_cumack;
784 uint16_t inflight; /* flightsize in k */
785 uint16_t cwnd_augment; /* increment to it */
786 uint8_t meets_pseudo_cumack;
787 uint8_t need_new_pseudo_cumack;
792 struct sctp_blk_args {
793 uint32_t onsb; /* in 1k bytes */
794 uint32_t sndlen; /* len of send being attempted */
795 uint32_t peer_rwnd; /* rwnd of peer */
796 uint16_t send_sent_qcnt; /* chnk cnt */
797 uint16_t stream_qcnt; /* chnk cnt */
798 uint16_t chunks_on_oque; /* chunks out */
799 uint16_t flight_size; /* flight size in k */
802 struct sctp_timeouts {
803 sctp_assoc_t stimo_assoc_id;
807 uint32_t stimo_shutdown;
808 uint32_t stimo_heartbeat;
809 uint32_t stimo_cookie;
810 uint32_t stimo_shutdownack;
814 /* Standard TCP Congestion Control */
815 #define SCTP_CC_RFC2581 0x00000000
816 /* High Speed TCP Congestion Control (Floyd) */
817 #define SCTP_CC_HSTCP 0x00000001
818 /* HTCP Congestion Control */
819 #define SCTP_CC_HTCP 0x00000002
820 /* RTCC Congestion Control - RFC2581 plus */
821 #define SCTP_CC_RTCC 0x00000003
823 #define SCTP_CC_OPT_RTCC_SETMODE 0x00002000
824 #define SCTP_CC_OPT_USE_DCCC_EC 0x00002001
825 #define SCTP_CC_OPT_STEADY_STEP 0x00002002
827 #define SCTP_CMT_OFF 0
828 #define SCTP_CMT_BASE 1
829 #define SCTP_CMT_RPV1 2
830 #define SCTP_CMT_RPV2 3
831 #define SCTP_CMT_MPTCP 4
832 #define SCTP_CMT_MAX SCTP_CMT_MPTCP
834 /* RS - Supported stream scheduling modules for pluggable
837 /* Default simple round-robin */
838 #define SCTP_SS_DEFAULT 0x00000000
839 /* Real round-robin */
840 #define SCTP_SS_ROUND_ROBIN 0x00000001
841 /* Real round-robin per packet */
842 #define SCTP_SS_ROUND_ROBIN_PACKET 0x00000002
844 #define SCTP_SS_PRIORITY 0x00000003
846 #define SCTP_SS_FAIR_BANDWITH 0x00000004
847 /* First-come, first-serve */
848 #define SCTP_SS_FIRST_COME 0x00000005
850 /******************** System calls *************/
853 usrsctp_init(uint16_t,
854 int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
855 void (*)(const char *format, ...));
858 usrsctp_socket(int domain, int type, int protocol,
859 int (*receive_cb)(struct socket *sock, union sctp_sockstore addr, void *data,
860 size_t datalen, struct sctp_rcvinfo, int flags, void *ulp_info),
861 int (*send_cb)(struct socket *sock, uint32_t sb_free),
862 uint32_t sb_threshold,
866 usrsctp_setsockopt(struct socket *so,
869 const void *option_value,
870 socklen_t option_len);
873 usrsctp_getsockopt(struct socket *so,
877 socklen_t *option_len);
880 usrsctp_getpaddrs(struct socket *so,
882 struct sockaddr **raddrs);
885 usrsctp_freepaddrs(struct sockaddr *addrs);
888 usrsctp_getladdrs(struct socket *so,
890 struct sockaddr **raddrs);
893 usrsctp_freeladdrs(struct sockaddr *addrs);
896 usrsctp_sendv(struct socket *so,
903 unsigned int infotype,
907 usrsctp_recvv(struct socket *so,
910 struct sockaddr *from,
914 unsigned int *infotype,
918 usrsctp_bind(struct socket *so,
919 struct sockaddr *name,
922 #define SCTP_BINDX_ADD_ADDR 0x00008001
923 #define SCTP_BINDX_REM_ADDR 0x00008002
926 usrsctp_bindx(struct socket *so,
927 struct sockaddr *addrs,
932 usrsctp_listen(struct socket *so,
936 usrsctp_accept(struct socket *so,
937 struct sockaddr * aname,
938 socklen_t * anamelen);
941 usrsctp_peeloff(struct socket *, sctp_assoc_t);
944 usrsctp_connect(struct socket *so,
945 struct sockaddr *name,
949 usrsctp_connectx(struct socket *so,
950 const struct sockaddr *addrs, int addrcnt,
954 usrsctp_close(struct socket *so);
957 usrsctp_finish(void);
960 usrsctp_shutdown(struct socket *so, int how);
963 usrsctp_conninput(void *, const void *, size_t, uint8_t);
966 usrsctp_set_non_blocking(struct socket *, int);
969 usrsctp_get_non_blocking(struct socket *);
972 usrsctp_register_address(void *);
975 usrsctp_deregister_address(void *);
977 #define SCTP_DUMP_OUTBOUND 1
978 #define SCTP_DUMP_INBOUND 0
981 usrsctp_dumppacket(void *, size_t, int);
984 usrsctp_freedumpbuffer(char *);
986 #define USRSCTP_SYSCTL_DECL(__field) \
987 void usrsctp_sysctl_set_ ## __field(uint32_t value);\
988 uint32_t usrsctp_sysctl_get_ ## __field(void);
990 USRSCTP_SYSCTL_DECL(sctp_sendspace)
991 USRSCTP_SYSCTL_DECL(sctp_recvspace)
992 USRSCTP_SYSCTL_DECL(sctp_auto_asconf)
993 USRSCTP_SYSCTL_DECL(sctp_multiple_asconfs)
994 USRSCTP_SYSCTL_DECL(sctp_ecn_enable)
995 USRSCTP_SYSCTL_DECL(sctp_strict_sacks)
996 #if !defined(SCTP_WITH_NO_CSUM)
997 USRSCTP_SYSCTL_DECL(sctp_no_csum_on_loopback)
999 USRSCTP_SYSCTL_DECL(sctp_peer_chunk_oh)
1000 USRSCTP_SYSCTL_DECL(sctp_max_burst_default)
1001 USRSCTP_SYSCTL_DECL(sctp_max_chunks_on_queue)
1002 USRSCTP_SYSCTL_DECL(sctp_hashtblsize)
1003 USRSCTP_SYSCTL_DECL(sctp_pcbtblsize)
1004 USRSCTP_SYSCTL_DECL(sctp_min_split_point)
1005 USRSCTP_SYSCTL_DECL(sctp_chunkscale)
1006 USRSCTP_SYSCTL_DECL(sctp_delayed_sack_time_default)
1007 USRSCTP_SYSCTL_DECL(sctp_sack_freq_default)
1008 USRSCTP_SYSCTL_DECL(sctp_system_free_resc_limit)
1009 USRSCTP_SYSCTL_DECL(sctp_asoc_free_resc_limit)
1010 USRSCTP_SYSCTL_DECL(sctp_heartbeat_interval_default)
1011 USRSCTP_SYSCTL_DECL(sctp_pmtu_raise_time_default)
1012 USRSCTP_SYSCTL_DECL(sctp_shutdown_guard_time_default)
1013 USRSCTP_SYSCTL_DECL(sctp_secret_lifetime_default)
1014 USRSCTP_SYSCTL_DECL(sctp_rto_max_default)
1015 USRSCTP_SYSCTL_DECL(sctp_rto_min_default)
1016 USRSCTP_SYSCTL_DECL(sctp_rto_initial_default)
1017 USRSCTP_SYSCTL_DECL(sctp_init_rto_max_default)
1018 USRSCTP_SYSCTL_DECL(sctp_valid_cookie_life_default)
1019 USRSCTP_SYSCTL_DECL(sctp_init_rtx_max_default)
1020 USRSCTP_SYSCTL_DECL(sctp_assoc_rtx_max_default)
1021 USRSCTP_SYSCTL_DECL(sctp_path_rtx_max_default)
1022 USRSCTP_SYSCTL_DECL(sctp_add_more_threshold)
1023 USRSCTP_SYSCTL_DECL(sctp_nr_incoming_streams_default)
1024 USRSCTP_SYSCTL_DECL(sctp_nr_outgoing_streams_default)
1025 USRSCTP_SYSCTL_DECL(sctp_cmt_on_off)
1026 USRSCTP_SYSCTL_DECL(sctp_cmt_use_dac)
1027 USRSCTP_SYSCTL_DECL(sctp_nr_sack_on_off)
1028 USRSCTP_SYSCTL_DECL(sctp_use_cwnd_based_maxburst)
1029 USRSCTP_SYSCTL_DECL(sctp_asconf_auth_nochk)
1030 USRSCTP_SYSCTL_DECL(sctp_auth_disable)
1031 USRSCTP_SYSCTL_DECL(sctp_nat_friendly)
1032 USRSCTP_SYSCTL_DECL(sctp_L2_abc_variable)
1033 USRSCTP_SYSCTL_DECL(sctp_mbuf_threshold_count)
1034 USRSCTP_SYSCTL_DECL(sctp_do_drain)
1035 USRSCTP_SYSCTL_DECL(sctp_hb_maxburst)
1036 USRSCTP_SYSCTL_DECL(sctp_abort_if_one_2_one_hits_limit)
1037 USRSCTP_SYSCTL_DECL(sctp_strict_data_order)
1038 USRSCTP_SYSCTL_DECL(sctp_min_residual)
1039 USRSCTP_SYSCTL_DECL(sctp_max_retran_chunk)
1040 USRSCTP_SYSCTL_DECL(sctp_logging_level)
1041 USRSCTP_SYSCTL_DECL(sctp_default_cc_module)
1042 USRSCTP_SYSCTL_DECL(sctp_default_frag_interleave)
1043 USRSCTP_SYSCTL_DECL(sctp_mobility_base)
1044 USRSCTP_SYSCTL_DECL(sctp_mobility_fasthandoff)
1045 USRSCTP_SYSCTL_DECL(sctp_inits_include_nat_friendly)
1046 USRSCTP_SYSCTL_DECL(sctp_udp_tunneling_port)
1047 USRSCTP_SYSCTL_DECL(sctp_enable_sack_immediately)
1048 USRSCTP_SYSCTL_DECL(sctp_vtag_time_wait)
1049 USRSCTP_SYSCTL_DECL(sctp_blackhole)
1050 USRSCTP_SYSCTL_DECL(sctp_diag_info_code)
1051 USRSCTP_SYSCTL_DECL(sctp_fr_max_burst_default)
1052 USRSCTP_SYSCTL_DECL(sctp_path_pf_threshold)
1053 USRSCTP_SYSCTL_DECL(sctp_default_ss_module)
1054 USRSCTP_SYSCTL_DECL(sctp_rttvar_bw)
1055 USRSCTP_SYSCTL_DECL(sctp_rttvar_rtt)
1056 USRSCTP_SYSCTL_DECL(sctp_rttvar_eqret)
1057 USRSCTP_SYSCTL_DECL(sctp_steady_step)
1058 USRSCTP_SYSCTL_DECL(sctp_use_dccc_ecn)
1059 USRSCTP_SYSCTL_DECL(sctp_buffer_splitting)
1060 USRSCTP_SYSCTL_DECL(sctp_initial_cwnd)
1062 USRSCTP_SYSCTL_DECL(sctp_debug_on)
1063 /* More specific values can be found in sctp_constants, but
1064 * are not considered to be part of the API.
1066 #define SCTP_DEBUG_NONE 0x00000000
1067 #define SCTP_DEBUG_ALL 0xffffffff
1069 #undef USRSCTP_SYSCTL_DECL
1070 struct sctp_timeval {
1076 struct sctp_timeval sctps_discontinuitytime; /* sctpStats 18 (TimeStamp) */
1077 /* MIB according to RFC 3873 */
1078 uint32_t sctps_currestab; /* sctpStats 1 (Gauge32) */
1079 uint32_t sctps_activeestab; /* sctpStats 2 (Counter32) */
1080 uint32_t sctps_restartestab;
1081 uint32_t sctps_collisionestab;
1082 uint32_t sctps_passiveestab; /* sctpStats 3 (Counter32) */
1083 uint32_t sctps_aborted; /* sctpStats 4 (Counter32) */
1084 uint32_t sctps_shutdown; /* sctpStats 5 (Counter32) */
1085 uint32_t sctps_outoftheblue; /* sctpStats 6 (Counter32) */
1086 uint32_t sctps_checksumerrors; /* sctpStats 7 (Counter32) */
1087 uint32_t sctps_outcontrolchunks; /* sctpStats 8 (Counter64) */
1088 uint32_t sctps_outorderchunks; /* sctpStats 9 (Counter64) */
1089 uint32_t sctps_outunorderchunks; /* sctpStats 10 (Counter64) */
1090 uint32_t sctps_incontrolchunks; /* sctpStats 11 (Counter64) */
1091 uint32_t sctps_inorderchunks; /* sctpStats 12 (Counter64) */
1092 uint32_t sctps_inunorderchunks; /* sctpStats 13 (Counter64) */
1093 uint32_t sctps_fragusrmsgs; /* sctpStats 14 (Counter64) */
1094 uint32_t sctps_reasmusrmsgs; /* sctpStats 15 (Counter64) */
1095 uint32_t sctps_outpackets; /* sctpStats 16 (Counter64) */
1096 uint32_t sctps_inpackets; /* sctpStats 17 (Counter64) */
1098 /* input statistics: */
1099 uint32_t sctps_recvpackets; /* total input packets */
1100 uint32_t sctps_recvdatagrams; /* total input datagrams */
1101 uint32_t sctps_recvpktwithdata; /* total packets that had data */
1102 uint32_t sctps_recvsacks; /* total input SACK chunks */
1103 uint32_t sctps_recvdata; /* total input DATA chunks */
1104 uint32_t sctps_recvdupdata; /* total input duplicate DATA chunks */
1105 uint32_t sctps_recvheartbeat; /* total input HB chunks */
1106 uint32_t sctps_recvheartbeatack; /* total input HB-ACK chunks */
1107 uint32_t sctps_recvecne; /* total input ECNE chunks */
1108 uint32_t sctps_recvauth; /* total input AUTH chunks */
1109 uint32_t sctps_recvauthmissing; /* total input chunks missing AUTH */
1110 uint32_t sctps_recvivalhmacid; /* total number of invalid HMAC ids received */
1111 uint32_t sctps_recvivalkeyid; /* total number of invalid secret ids received */
1112 uint32_t sctps_recvauthfailed; /* total number of auth failed */
1113 uint32_t sctps_recvexpress; /* total fast path receives all one chunk */
1114 uint32_t sctps_recvexpressm; /* total fast path multi-part data */
1115 uint32_t sctps_recvnocrc;
1116 uint32_t sctps_recvswcrc;
1117 uint32_t sctps_recvhwcrc;
1119 /* output statistics: */
1120 uint32_t sctps_sendpackets; /* total output packets */
1121 uint32_t sctps_sendsacks; /* total output SACKs */
1122 uint32_t sctps_senddata; /* total output DATA chunks */
1123 uint32_t sctps_sendretransdata; /* total output retransmitted DATA chunks */
1124 uint32_t sctps_sendfastretrans; /* total output fast retransmitted DATA chunks */
1125 uint32_t sctps_sendmultfastretrans; /* total FR's that happened more than once
1126 * to same chunk (u-del multi-fr algo).
1128 uint32_t sctps_sendheartbeat; /* total output HB chunks */
1129 uint32_t sctps_sendecne; /* total output ECNE chunks */
1130 uint32_t sctps_sendauth; /* total output AUTH chunks FIXME */
1131 uint32_t sctps_senderrors; /* ip_output error counter */
1132 uint32_t sctps_sendnocrc;
1133 uint32_t sctps_sendswcrc;
1134 uint32_t sctps_sendhwcrc;
1135 /* PCKDROPREP statistics: */
1136 uint32_t sctps_pdrpfmbox; /* Packet drop from middle box */
1137 uint32_t sctps_pdrpfehos; /* P-drop from end host */
1138 uint32_t sctps_pdrpmbda; /* P-drops with data */
1139 uint32_t sctps_pdrpmbct; /* P-drops, non-data, non-endhost */
1140 uint32_t sctps_pdrpbwrpt; /* P-drop, non-endhost, bandwidth rep only */
1141 uint32_t sctps_pdrpcrupt; /* P-drop, not enough for chunk header */
1142 uint32_t sctps_pdrpnedat; /* P-drop, not enough data to confirm */
1143 uint32_t sctps_pdrppdbrk; /* P-drop, where process_chunk_drop said break */
1144 uint32_t sctps_pdrptsnnf; /* P-drop, could not find TSN */
1145 uint32_t sctps_pdrpdnfnd; /* P-drop, attempt reverse TSN lookup */
1146 uint32_t sctps_pdrpdiwnp; /* P-drop, e-host confirms zero-rwnd */
1147 uint32_t sctps_pdrpdizrw; /* P-drop, midbox confirms no space */
1148 uint32_t sctps_pdrpbadd; /* P-drop, data did not match TSN */
1149 uint32_t sctps_pdrpmark; /* P-drop, TSN's marked for Fast Retran */
1151 uint32_t sctps_timoiterator; /* Number of iterator timers that fired */
1152 uint32_t sctps_timodata; /* Number of T3 data time outs */
1153 uint32_t sctps_timowindowprobe; /* Number of window probe (T3) timers that fired */
1154 uint32_t sctps_timoinit; /* Number of INIT timers that fired */
1155 uint32_t sctps_timosack; /* Number of sack timers that fired */
1156 uint32_t sctps_timoshutdown; /* Number of shutdown timers that fired */
1157 uint32_t sctps_timoheartbeat; /* Number of heartbeat timers that fired */
1158 uint32_t sctps_timocookie; /* Number of times a cookie timeout fired */
1159 uint32_t sctps_timosecret; /* Number of times an endpoint changed its cookie secret*/
1160 uint32_t sctps_timopathmtu; /* Number of PMTU timers that fired */
1161 uint32_t sctps_timoshutdownack; /* Number of shutdown ack timers that fired */
1162 uint32_t sctps_timoshutdownguard; /* Number of shutdown guard timers that fired */
1163 uint32_t sctps_timostrmrst; /* Number of stream reset timers that fired */
1164 uint32_t sctps_timoearlyfr; /* Number of early FR timers that fired */
1165 uint32_t sctps_timoasconf; /* Number of times an asconf timer fired */
1166 uint32_t sctps_timodelprim; /* Number of times a prim_deleted timer fired */
1167 uint32_t sctps_timoautoclose; /* Number of times auto close timer fired */
1168 uint32_t sctps_timoassockill; /* Number of asoc free timers expired */
1169 uint32_t sctps_timoinpkill; /* Number of inp free timers expired */
1170 /* former early FR counters */
1171 uint32_t sctps_spare[11];
1173 uint32_t sctps_hdrops; /* packet shorter than header */
1174 uint32_t sctps_badsum; /* checksum error */
1175 uint32_t sctps_noport; /* no endpoint for port */
1176 uint32_t sctps_badvtag; /* bad v-tag */
1177 uint32_t sctps_badsid; /* bad SID */
1178 uint32_t sctps_nomem; /* no memory */
1179 uint32_t sctps_fastretransinrtt; /* number of multiple FR in a RTT window */
1180 uint32_t sctps_markedretrans;
1181 uint32_t sctps_naglesent; /* nagle allowed sending */
1182 uint32_t sctps_naglequeued; /* nagle doesn't allow sending */
1183 uint32_t sctps_maxburstqueued; /* max burst doesn't allow sending */
1184 uint32_t sctps_ifnomemqueued; /* look ahead tells us no memory in
1185 * interface ring buffer OR we had a
1186 * send error and are queuing one send.
1188 uint32_t sctps_windowprobed; /* total number of window probes sent */
1189 uint32_t sctps_lowlevelerr; /* total times an output error causes us
1190 * to clamp down on next user send.
1192 uint32_t sctps_lowlevelerrusr; /* total times sctp_senderrors were caused from
1193 * a user send from a user invoked send not
1196 uint32_t sctps_datadropchklmt; /* Number of in data drops due to chunk limit reached */
1197 uint32_t sctps_datadroprwnd; /* Number of in data drops due to rwnd limit reached */
1198 uint32_t sctps_ecnereducedcwnd; /* Number of times a ECN reduced the cwnd */
1199 uint32_t sctps_vtagexpress; /* Used express lookup via vtag */
1200 uint32_t sctps_vtagbogus; /* Collision in express lookup. */
1201 uint32_t sctps_primary_randry; /* Number of times the sender ran dry of user data on primary */
1202 uint32_t sctps_cmt_randry; /* Same for above */
1203 uint32_t sctps_slowpath_sack; /* Sacks the slow way */
1204 uint32_t sctps_wu_sacks_sent; /* Window Update only sacks sent */
1205 uint32_t sctps_sends_with_flags; /* number of sends with sinfo_flags !=0 */
1206 uint32_t sctps_sends_with_unord; /* number of unordered sends */
1207 uint32_t sctps_sends_with_eof; /* number of sends with EOF flag set */
1208 uint32_t sctps_sends_with_abort; /* number of sends with ABORT flag set */
1209 uint32_t sctps_protocol_drain_calls;/* number of times protocol drain called */
1210 uint32_t sctps_protocol_drains_done;/* number of times we did a protocol drain */
1211 uint32_t sctps_read_peeks; /* Number of times recv was called with peek */
1212 uint32_t sctps_cached_chk; /* Number of cached chunks used */
1213 uint32_t sctps_cached_strmoq; /* Number of cached stream oq's used */
1214 uint32_t sctps_left_abandon; /* Number of unread messages abandoned by close */
1215 uint32_t sctps_send_burst_avoid; /* Unused */
1216 uint32_t sctps_send_cwnd_avoid; /* Send cwnd full avoidance, already max burst inflight to net */
1217 uint32_t sctps_fwdtsn_map_over; /* number of map array over-runs via fwd-tsn's */
1218 uint32_t sctps_queue_upd_ecne; /* Number of times we queued or updated an ECN chunk on send queue */
1219 uint32_t sctps_reserved[31]; /* Future ABI compat - remove int's from here when adding new */
1223 usrsctp_get_stat(struct sctpstat *);
1227 #pragma warning(default: 4200)