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 uint64_t unsigned __int64
71 #define int16_t __int16
72 #define int32_t __int32
77 #define ssize_t __int64
81 #error "Unknown platform!"
87 #define EWOULDBLOCK WSAEWOULDBLOCK
90 #define EINPROGRESS WSAEINPROGRESS
97 typedef uint32_t sctp_assoc_t;
99 #if defined(_WIN32) && defined(_MSC_VER)
100 #pragma pack (push, 1)
103 #define SCTP_PACKED __attribute__((packed))
106 struct sctp_common_header {
107 uint16_t source_port;
108 uint16_t destination_port;
109 uint32_t verification_tag;
113 #if defined(_WIN32) && defined(_MSC_VER)
119 /* The definition of struct sockaddr_conn MUST be in
120 * tune with other sockaddr_* structures.
122 #if defined(__APPLE__) || defined(__Bitrig__) || defined(__DragonFly__) || \
123 defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
124 struct sockaddr_conn {
126 uint8_t sconn_family;
131 struct sockaddr_conn {
132 uint16_t sconn_family;
138 union sctp_sockstore {
139 struct sockaddr_in sin;
140 struct sockaddr_in6 sin6;
141 struct sockaddr_conn sconn;
145 #define SCTP_FUTURE_ASSOC 0
146 #define SCTP_CURRENT_ASSOC 1
147 #define SCTP_ALL_ASSOC 2
149 #define SCTP_EVENT_READ 0x0001
150 #define SCTP_EVENT_WRITE 0x0002
151 #define SCTP_EVENT_ERROR 0x0004
153 /*** Structures and definitions to use the socket API ***/
155 #define SCTP_ALIGN_RESV_PAD 92
156 #define SCTP_ALIGN_RESV_PAD_SHORT 76
158 struct sctp_rcvinfo {
165 uint32_t rcv_context;
166 sctp_assoc_t rcv_assoc_id;
169 struct sctp_nxtinfo {
174 sctp_assoc_t nxt_assoc_id;
177 #define SCTP_NO_NEXT_MSG 0x0000
178 #define SCTP_NEXT_MSG_AVAIL 0x0001
179 #define SCTP_NEXT_MSG_ISCOMPLETE 0x0002
180 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
181 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
183 struct sctp_recvv_rn {
184 struct sctp_rcvinfo recvv_rcvinfo;
185 struct sctp_nxtinfo recvv_nxtinfo;
188 #define SCTP_RECVV_NOINFO 0
189 #define SCTP_RECVV_RCVINFO 1
190 #define SCTP_RECVV_NXTINFO 2
191 #define SCTP_RECVV_RN 3
193 #define SCTP_SENDV_NOINFO 0
194 #define SCTP_SENDV_SNDINFO 1
195 #define SCTP_SENDV_PRINFO 2
196 #define SCTP_SENDV_AUTHINFO 3
197 #define SCTP_SENDV_SPA 4
199 #define SCTP_SEND_SNDINFO_VALID 0x00000001
200 #define SCTP_SEND_PRINFO_VALID 0x00000002
201 #define SCTP_SEND_AUTHINFO_VALID 0x00000004
203 struct sctp_snd_all_completes {
204 uint16_t sall_stream;
207 uint32_t sall_context;
208 uint32_t sall_num_sent;
209 uint32_t sall_num_failed;
212 struct sctp_sndinfo {
216 uint32_t snd_context;
217 sctp_assoc_t snd_assoc_id;
225 struct sctp_authinfo {
226 uint16_t auth_keynumber;
229 struct sctp_sendv_spa {
230 uint32_t sendv_flags;
231 struct sctp_sndinfo sendv_sndinfo;
232 struct sctp_prinfo sendv_prinfo;
233 struct sctp_authinfo sendv_authinfo;
236 struct sctp_udpencaps {
237 struct sockaddr_storage sue_address;
238 uint32_t sue_assoc_id;
242 /******** Notifications **************/
244 /* notification types */
245 #define SCTP_ASSOC_CHANGE 0x0001
246 #define SCTP_PEER_ADDR_CHANGE 0x0002
247 #define SCTP_REMOTE_ERROR 0x0003
248 #define SCTP_SEND_FAILED 0x0004
249 #define SCTP_SHUTDOWN_EVENT 0x0005
250 #define SCTP_ADAPTATION_INDICATION 0x0006
251 #define SCTP_PARTIAL_DELIVERY_EVENT 0x0007
252 #define SCTP_AUTHENTICATION_EVENT 0x0008
253 #define SCTP_STREAM_RESET_EVENT 0x0009
254 #define SCTP_SENDER_DRY_EVENT 0x000a
255 #define SCTP_NOTIFICATIONS_STOPPED_EVENT 0x000b
256 #define SCTP_ASSOC_RESET_EVENT 0x000c
257 #define SCTP_STREAM_CHANGE_EVENT 0x000d
258 #define SCTP_SEND_FAILED_EVENT 0x000e
260 /* notification event structures */
263 /* association change event */
264 struct sctp_assoc_change {
270 uint16_t sac_outbound_streams;
271 uint16_t sac_inbound_streams;
272 sctp_assoc_t sac_assoc_id;
273 uint8_t sac_info[]; /* not available yet */
276 /* sac_state values */
277 #define SCTP_COMM_UP 0x0001
278 #define SCTP_COMM_LOST 0x0002
279 #define SCTP_RESTART 0x0003
280 #define SCTP_SHUTDOWN_COMP 0x0004
281 #define SCTP_CANT_STR_ASSOC 0x0005
283 /* sac_info values */
284 #define SCTP_ASSOC_SUPPORTS_PR 0x01
285 #define SCTP_ASSOC_SUPPORTS_AUTH 0x02
286 #define SCTP_ASSOC_SUPPORTS_ASCONF 0x03
287 #define SCTP_ASSOC_SUPPORTS_MULTIBUF 0x04
288 #define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05
289 #define SCTP_ASSOC_SUPPORTS_INTERLEAVING 0x06
290 #define SCTP_ASSOC_SUPPORTS_MAX 0x06
293 struct sctp_paddr_change {
297 struct sockaddr_storage spc_aaddr;
300 sctp_assoc_t spc_assoc_id;
301 uint8_t spc_padding[4];
304 /* paddr state values */
305 #define SCTP_ADDR_AVAILABLE 0x0001
306 #define SCTP_ADDR_UNREACHABLE 0x0002
307 #define SCTP_ADDR_REMOVED 0x0003
308 #define SCTP_ADDR_ADDED 0x0004
309 #define SCTP_ADDR_MADE_PRIM 0x0005
310 #define SCTP_ADDR_CONFIRMED 0x0006
312 /* remote error events */
313 struct sctp_remote_error {
318 sctp_assoc_t sre_assoc_id;
323 struct sctp_shutdown_event {
327 sctp_assoc_t sse_assoc_id;
330 /* Adaptation layer indication */
331 struct sctp_adaptation_event {
335 uint32_t sai_adaptation_ind;
336 sctp_assoc_t sai_assoc_id;
339 /* Partial delivery event */
340 struct sctp_pdapi_event {
342 uint16_t pdapi_flags;
343 uint32_t pdapi_length;
344 uint32_t pdapi_indication;
345 uint32_t pdapi_stream;
347 sctp_assoc_t pdapi_assoc_id;
350 /* indication values */
351 #define SCTP_PARTIAL_DELIVERY_ABORTED 0x0001
353 /* SCTP authentication event */
354 struct sctp_authkey_event {
357 uint32_t auth_length;
358 uint16_t auth_keynumber;
359 uint32_t auth_indication;
360 sctp_assoc_t auth_assoc_id;
363 /* indication values */
364 #define SCTP_AUTH_NEW_KEY 0x0001
365 #define SCTP_AUTH_NO_AUTH 0x0002
366 #define SCTP_AUTH_FREE_KEY 0x0003
368 /* SCTP sender dry event */
369 struct sctp_sender_dry_event {
370 uint16_t sender_dry_type;
371 uint16_t sender_dry_flags;
372 uint32_t sender_dry_length;
373 sctp_assoc_t sender_dry_assoc_id;
377 /* Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT */
378 struct sctp_stream_reset_event {
379 uint16_t strreset_type;
380 uint16_t strreset_flags;
381 uint32_t strreset_length;
382 sctp_assoc_t strreset_assoc_id;
383 uint16_t strreset_stream_list[];
386 /* flags in stream_reset_event (strreset_flags) */
387 #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001
388 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002
389 #define SCTP_STREAM_RESET_DENIED 0x0004 /* SCTP_STRRESET_FAILED */
390 #define SCTP_STREAM_RESET_FAILED 0x0008 /* SCTP_STRRESET_FAILED */
391 #define SCTP_STREAM_CHANGED_DENIED 0x0010
393 #define SCTP_STREAM_RESET_INCOMING 0x00000001
394 #define SCTP_STREAM_RESET_OUTGOING 0x00000002
397 /* Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT */
398 struct sctp_assoc_reset_event {
399 uint16_t assocreset_type;
400 uint16_t assocreset_flags;
401 uint32_t assocreset_length;
402 sctp_assoc_t assocreset_assoc_id;
403 uint32_t assocreset_local_tsn;
404 uint32_t assocreset_remote_tsn;
407 #define SCTP_ASSOC_RESET_DENIED 0x0004
408 #define SCTP_ASSOC_RESET_FAILED 0x0008
411 /* Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT */
412 struct sctp_stream_change_event {
413 uint16_t strchange_type;
414 uint16_t strchange_flags;
415 uint32_t strchange_length;
416 sctp_assoc_t strchange_assoc_id;
417 uint16_t strchange_instrms;
418 uint16_t strchange_outstrms;
421 #define SCTP_STREAM_CHANGE_DENIED 0x0004
422 #define SCTP_STREAM_CHANGE_FAILED 0x0008
425 /* SCTP send failed event */
426 struct sctp_send_failed_event {
429 uint32_t ssfe_length;
431 struct sctp_sndinfo ssfe_info;
432 sctp_assoc_t ssfe_assoc_id;
436 /* flag that indicates state of data */
437 #define SCTP_DATA_UNSENT 0x0001 /* inqueue never on wire */
438 #define SCTP_DATA_SENT 0x0002 /* on wire at failure */
440 /* SCTP event option */
442 sctp_assoc_t se_assoc_id;
447 union sctp_notification {
453 struct sctp_assoc_change sn_assoc_change;
454 struct sctp_paddr_change sn_paddr_change;
455 struct sctp_remote_error sn_remote_error;
456 struct sctp_shutdown_event sn_shutdown_event;
457 struct sctp_adaptation_event sn_adaptation_event;
458 struct sctp_pdapi_event sn_pdapi_event;
459 struct sctp_authkey_event sn_auth_event;
460 struct sctp_sender_dry_event sn_sender_dry_event;
461 struct sctp_send_failed_event sn_send_failed_event;
462 struct sctp_stream_reset_event sn_strreset_event;
463 struct sctp_assoc_reset_event sn_assocreset_event;
464 struct sctp_stream_change_event sn_strchange_event;
467 struct sctp_event_subscribe {
468 uint8_t sctp_data_io_event;
469 uint8_t sctp_association_event;
470 uint8_t sctp_address_event;
471 uint8_t sctp_send_failure_event;
472 uint8_t sctp_peer_error_event;
473 uint8_t sctp_shutdown_event;
474 uint8_t sctp_partial_delivery_event;
475 uint8_t sctp_adaptation_layer_event;
476 uint8_t sctp_authentication_event;
477 uint8_t sctp_sender_dry_event;
478 uint8_t sctp_stream_reset_event;
483 /* Flags that go into the sinfo->sinfo_flags field */
484 #define SCTP_DATA_LAST_FRAG 0x0001 /* tail part of the message could not be sent */
485 #define SCTP_DATA_NOT_FRAG 0x0003 /* complete message could not be sent */
486 #define SCTP_NOTIFICATION 0x0010 /* next message is a notification */
487 #define SCTP_COMPLETE 0x0020 /* next message is complete */
488 #define SCTP_EOF 0x0100 /* Start shutdown procedures */
489 #define SCTP_ABORT 0x0200 /* Send an ABORT to peer */
490 #define SCTP_UNORDERED 0x0400 /* Message is un-ordered */
491 #define SCTP_ADDR_OVER 0x0800 /* Override the primary-address */
492 #define SCTP_SENDALL 0x1000 /* Send this on all associations */
493 #define SCTP_EOR 0x2000 /* end of message signal */
494 #define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */
496 #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
497 & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
498 SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
499 SCTP_SACK_IMMEDIATELY)) != 0)
500 /* for the endpoint */
502 /* The lower byte is an enumeration of PR-SCTP policies */
503 #define SCTP_PR_SCTP_NONE 0x0000 /* Reliable transfer */
504 #define SCTP_PR_SCTP_TTL 0x0001 /* Time based PR-SCTP */
505 #define SCTP_PR_SCTP_BUF 0x0002 /* Buffer based PR-SCTP */
506 #define SCTP_PR_SCTP_RTX 0x0003 /* Number of retransmissions based PR-SCTP */
508 #define PR_SCTP_POLICY(x) ((x) & 0x0f)
509 #define PR_SCTP_ENABLED(x) (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE)
510 #define PR_SCTP_TTL_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
511 #define PR_SCTP_BUF_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
512 #define PR_SCTP_RTX_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
513 #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_RTX)
517 * user socket options: socket API defined
522 #define SCTP_RTOINFO 0x00000001
523 #define SCTP_ASSOCINFO 0x00000002
524 #define SCTP_INITMSG 0x00000003
525 #define SCTP_NODELAY 0x00000004
526 #define SCTP_AUTOCLOSE 0x00000005
527 #define SCTP_PRIMARY_ADDR 0x00000007
528 #define SCTP_ADAPTATION_LAYER 0x00000008
529 #define SCTP_DISABLE_FRAGMENTS 0x00000009
530 #define SCTP_PEER_ADDR_PARAMS 0x0000000a
531 /* ancillary data/notification interest options */
532 /* Without this applied we will give V4 and V6 addresses on a V6 socket */
533 #define SCTP_I_WANT_MAPPED_V4_ADDR 0x0000000d
534 #define SCTP_MAXSEG 0x0000000e
535 #define SCTP_DELAYED_SACK 0x0000000f
536 #define SCTP_FRAGMENT_INTERLEAVE 0x00000010
537 #define SCTP_PARTIAL_DELIVERY_POINT 0x00000011
538 /* authentication support */
539 #define SCTP_HMAC_IDENT 0x00000014
540 #define SCTP_AUTH_ACTIVE_KEY 0x00000015
541 #define SCTP_AUTO_ASCONF 0x00000018
542 #define SCTP_MAX_BURST 0x00000019
543 /* assoc level context */
544 #define SCTP_CONTEXT 0x0000001a
545 /* explicit EOR signalling */
546 #define SCTP_EXPLICIT_EOR 0x0000001b
547 #define SCTP_REUSE_PORT 0x0000001c
549 #define SCTP_EVENT 0x0000001e
550 #define SCTP_RECVRCVINFO 0x0000001f
551 #define SCTP_RECVNXTINFO 0x00000020
552 #define SCTP_DEFAULT_SNDINFO 0x00000021
553 #define SCTP_DEFAULT_PRINFO 0x00000022
554 #define SCTP_REMOTE_UDP_ENCAPS_PORT 0x00000024
555 #define SCTP_ECN_SUPPORTED 0x00000025
556 #define SCTP_PR_SUPPORTED 0x00000026
557 #define SCTP_AUTH_SUPPORTED 0x00000027
558 #define SCTP_ASCONF_SUPPORTED 0x00000028
559 #define SCTP_RECONFIG_SUPPORTED 0x00000029
560 #define SCTP_NRSACK_SUPPORTED 0x00000030
561 #define SCTP_PKTDROP_SUPPORTED 0x00000031
562 #define SCTP_MAX_CWND 0x00000032
564 #define SCTP_ENABLE_STREAM_RESET 0x00000900 /* struct sctp_assoc_value */
566 /* Pluggable Stream Scheduling Socket option */
567 #define SCTP_PLUGGABLE_SS 0x00001203
568 #define SCTP_SS_VALUE 0x00001204
573 #define SCTP_STATUS 0x00000100
574 #define SCTP_GET_PEER_ADDR_INFO 0x00000101
575 /* authentication support */
576 #define SCTP_PEER_AUTH_CHUNKS 0x00000102
577 #define SCTP_LOCAL_AUTH_CHUNKS 0x00000103
578 #define SCTP_GET_ASSOC_NUMBER 0x00000104
579 #define SCTP_GET_ASSOC_ID_LIST 0x00000105
580 #define SCTP_TIMEOUTS 0x00000106
581 #define SCTP_PR_STREAM_STATUS 0x00000107
582 #define SCTP_PR_ASSOC_STATUS 0x00000108
587 #define SCTP_SET_PEER_PRIMARY_ADDR 0x00000006
588 #define SCTP_AUTH_CHUNK 0x00000012
589 #define SCTP_AUTH_KEY 0x00000013
590 #define SCTP_AUTH_DEACTIVATE_KEY 0x0000001d
591 #define SCTP_AUTH_DELETE_KEY 0x00000016
592 #define SCTP_RESET_STREAMS 0x00000901 /* struct sctp_reset_streams */
593 #define SCTP_RESET_ASSOC 0x00000902 /* sctp_assoc_t */
594 #define SCTP_ADD_STREAMS 0x00000903 /* struct sctp_add_streams */
596 struct sctp_initmsg {
597 uint16_t sinit_num_ostreams;
598 uint16_t sinit_max_instreams;
599 uint16_t sinit_max_attempts;
600 uint16_t sinit_max_init_timeo;
603 struct sctp_rtoinfo {
604 sctp_assoc_t srto_assoc_id;
605 uint32_t srto_initial;
610 struct sctp_assocparams {
611 sctp_assoc_t sasoc_assoc_id;
612 uint32_t sasoc_peer_rwnd;
613 uint32_t sasoc_local_rwnd;
614 uint32_t sasoc_cookie_life;
615 uint16_t sasoc_asocmaxrxt;
616 uint16_t sasoc_number_peer_destinations;
619 struct sctp_setprim {
620 struct sockaddr_storage ssp_addr;
621 sctp_assoc_t ssp_assoc_id;
622 uint8_t ssp_padding[4];
625 struct sctp_setadaptation {
626 uint32_t ssb_adaptation_ind;
629 struct sctp_paddrparams {
630 struct sockaddr_storage spp_address;
631 sctp_assoc_t spp_assoc_id;
632 uint32_t spp_hbinterval;
633 uint32_t spp_pathmtu;
635 uint32_t spp_ipv6_flowlabel;
636 uint16_t spp_pathmaxrxt;
640 #define SPP_HB_ENABLE 0x00000001
641 #define SPP_HB_DISABLE 0x00000002
642 #define SPP_HB_DEMAND 0x00000004
643 #define SPP_PMTUD_ENABLE 0x00000008
644 #define SPP_PMTUD_DISABLE 0x00000010
645 #define SPP_HB_TIME_IS_ZERO 0x00000080
646 #define SPP_IPV6_FLOWLABEL 0x00000100
647 #define SPP_DSCP 0x00000200
649 /* Used for SCTP_MAXSEG, SCTP_MAX_BURST, SCTP_ENABLE_STREAM_RESET, and SCTP_CONTEXT */
650 struct sctp_assoc_value {
651 sctp_assoc_t assoc_id;
652 uint32_t assoc_value;
655 /* To enable stream reset */
656 #define SCTP_ENABLE_RESET_STREAM_REQ 0x00000001
657 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x00000002
658 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x00000004
659 #define SCTP_ENABLE_VALUE_MASK 0x00000007
661 struct sctp_reset_streams {
662 sctp_assoc_t srs_assoc_id;
664 uint16_t srs_number_streams; /* 0 == ALL */
665 uint16_t srs_stream_list[]; /* list if strrst_num_streams is not 0 */
668 struct sctp_add_streams {
669 sctp_assoc_t sas_assoc_id;
670 uint16_t sas_instrms;
671 uint16_t sas_outstrms;
674 struct sctp_hmacalgo {
675 uint32_t shmac_number_of_idents;
676 uint16_t shmac_idents[];
680 #define SCTP_AUTH_HMAC_ID_RSVD 0x0000
681 #define SCTP_AUTH_HMAC_ID_SHA1 0x0001 /* default, mandatory */
682 #define SCTP_AUTH_HMAC_ID_SHA256 0x0003
683 #define SCTP_AUTH_HMAC_ID_SHA224 0x0004
684 #define SCTP_AUTH_HMAC_ID_SHA384 0x0005
685 #define SCTP_AUTH_HMAC_ID_SHA512 0x0006
688 struct sctp_sack_info {
689 sctp_assoc_t sack_assoc_id;
694 struct sctp_default_prinfo {
697 sctp_assoc_t pr_assoc_id;
700 struct sctp_paddrinfo {
701 struct sockaddr_storage spinfo_address;
702 sctp_assoc_t spinfo_assoc_id;
703 int32_t spinfo_state;
704 uint32_t spinfo_cwnd;
705 uint32_t spinfo_srtt;
711 sctp_assoc_t sstat_assoc_id;
714 uint16_t sstat_unackdata;
715 uint16_t sstat_penddata;
716 uint16_t sstat_instrms;
717 uint16_t sstat_outstrms;
718 uint32_t sstat_fragmentation_point;
719 struct sctp_paddrinfo sstat_primary;
725 #define SCTP_CLOSED 0x0000
726 #define SCTP_BOUND 0x1000
727 #define SCTP_LISTEN 0x2000
728 #define SCTP_COOKIE_WAIT 0x0002
729 #define SCTP_COOKIE_ECHOED 0x0004
730 #define SCTP_ESTABLISHED 0x0008
731 #define SCTP_SHUTDOWN_SENT 0x0010
732 #define SCTP_SHUTDOWN_RECEIVED 0x0020
733 #define SCTP_SHUTDOWN_ACK_SENT 0x0040
734 #define SCTP_SHUTDOWN_PENDING 0x0080
737 #define SCTP_ACTIVE 0x0001 /* SCTP_ADDR_REACHABLE */
738 #define SCTP_INACTIVE 0x0002 /* neither SCTP_ADDR_REACHABLE
739 nor SCTP_ADDR_UNCONFIRMED */
740 #define SCTP_UNCONFIRMED 0x0200 /* SCTP_ADDR_UNCONFIRMED */
742 struct sctp_authchunks {
743 sctp_assoc_t gauth_assoc_id;
744 /* uint32_t gauth_number_of_chunks; not available */
745 uint8_t gauth_chunks[];
748 struct sctp_assoc_ids {
749 uint32_t gaids_number_of_ids;
750 sctp_assoc_t gaids_assoc_id[];
753 struct sctp_setpeerprim {
754 struct sockaddr_storage sspp_addr;
755 sctp_assoc_t sspp_assoc_id;
756 uint8_t sspp_padding[4];
759 struct sctp_authchunk {
764 struct sctp_get_nonce_values {
765 sctp_assoc_t gn_assoc_id;
766 uint32_t gn_peers_tag;
767 uint32_t gn_local_tag;
772 * Main SCTP chunk types
774 /************0x00 series ***********/
775 #define SCTP_DATA 0x00
776 #define SCTP_INITIATION 0x01
777 #define SCTP_INITIATION_ACK 0x02
778 #define SCTP_SELECTIVE_ACK 0x03
779 #define SCTP_HEARTBEAT_REQUEST 0x04
780 #define SCTP_HEARTBEAT_ACK 0x05
781 #define SCTP_ABORT_ASSOCIATION 0x06
782 #define SCTP_SHUTDOWN 0x07
783 #define SCTP_SHUTDOWN_ACK 0x08
784 #define SCTP_OPERATION_ERROR 0x09
785 #define SCTP_COOKIE_ECHO 0x0a
786 #define SCTP_COOKIE_ACK 0x0b
787 #define SCTP_ECN_ECHO 0x0c
788 #define SCTP_ECN_CWR 0x0d
789 #define SCTP_SHUTDOWN_COMPLETE 0x0e
791 #define SCTP_AUTHENTICATION 0x0f
792 /* EY nr_sack chunk id*/
793 #define SCTP_NR_SELECTIVE_ACK 0x10
794 /************0x40 series ***********/
795 /************0x80 series ***********/
797 #define SCTP_ASCONF_ACK 0x80
798 /* draft-ietf-stewart-pktdrpsctp */
799 #define SCTP_PACKET_DROPPED 0x81
800 /* draft-ietf-stewart-strreset-xxx */
801 #define SCTP_STREAM_RESET 0x82
804 #define SCTP_PAD_CHUNK 0x84
805 /************0xc0 series ***********/
807 #define SCTP_FORWARD_CUM_TSN 0xc0
809 #define SCTP_ASCONF 0xc1
811 struct sctp_authkey {
812 sctp_assoc_t sca_assoc_id;
813 uint16_t sca_keynumber;
814 uint16_t sca_keylength;
818 struct sctp_authkeyid {
819 sctp_assoc_t scact_assoc_id;
820 uint16_t scact_keynumber;
823 struct sctp_cc_option {
825 struct sctp_assoc_value aid_value;
828 struct sctp_stream_value {
829 sctp_assoc_t assoc_id;
831 uint16_t stream_value;
834 struct sctp_timeouts {
835 sctp_assoc_t stimo_assoc_id;
839 uint32_t stimo_shutdown;
840 uint32_t stimo_heartbeat;
841 uint32_t stimo_cookie;
842 uint32_t stimo_shutdownack;
845 struct sctp_prstatus {
846 sctp_assoc_t sprstat_assoc_id;
847 uint16_t sprstat_sid;
848 uint16_t sprstat_policy;
849 uint64_t sprstat_abandoned_unsent;
850 uint64_t sprstat_abandoned_sent;
853 /* Standard TCP Congestion Control */
854 #define SCTP_CC_RFC2581 0x00000000
855 /* High Speed TCP Congestion Control (Floyd) */
856 #define SCTP_CC_HSTCP 0x00000001
857 /* HTCP Congestion Control */
858 #define SCTP_CC_HTCP 0x00000002
859 /* RTCC Congestion Control - RFC2581 plus */
860 #define SCTP_CC_RTCC 0x00000003
862 #define SCTP_CC_OPT_RTCC_SETMODE 0x00002000
863 #define SCTP_CC_OPT_USE_DCCC_EC 0x00002001
864 #define SCTP_CC_OPT_STEADY_STEP 0x00002002
866 #define SCTP_CMT_OFF 0
867 #define SCTP_CMT_BASE 1
868 #define SCTP_CMT_RPV1 2
869 #define SCTP_CMT_RPV2 3
870 #define SCTP_CMT_MPTCP 4
871 #define SCTP_CMT_MAX SCTP_CMT_MPTCP
873 /* RS - Supported stream scheduling modules for pluggable
876 /* Default simple round-robin */
877 #define SCTP_SS_DEFAULT 0x00000000
878 /* Real round-robin */
879 #define SCTP_SS_ROUND_ROBIN 0x00000001
880 /* Real round-robin per packet */
881 #define SCTP_SS_ROUND_ROBIN_PACKET 0x00000002
883 #define SCTP_SS_PRIORITY 0x00000003
885 #define SCTP_SS_FAIR_BANDWITH 0x00000004
886 /* First-come, first-serve */
887 #define SCTP_SS_FIRST_COME 0x00000005
889 /******************** System calls *************/
894 usrsctp_init(uint16_t,
895 int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
896 void (*)(const char *format, ...));
899 usrsctp_init_nothreads(uint16_t,
900 int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
901 void (*)(const char *format, ...));
904 usrsctp_socket(int domain, int type, int protocol,
905 int (*receive_cb)(struct socket *sock, union sctp_sockstore addr, void *data,
906 size_t datalen, struct sctp_rcvinfo, int flags, void *ulp_info),
907 int (*send_cb)(struct socket *sock, uint32_t sb_free),
908 uint32_t sb_threshold,
912 usrsctp_setsockopt(struct socket *so,
915 const void *option_value,
916 socklen_t option_len);
919 usrsctp_getsockopt(struct socket *so,
923 socklen_t *option_len);
926 usrsctp_opt_info(struct socket *so,
933 usrsctp_getpaddrs(struct socket *so,
935 struct sockaddr **raddrs);
938 usrsctp_freepaddrs(struct sockaddr *addrs);
941 usrsctp_getladdrs(struct socket *so,
943 struct sockaddr **raddrs);
946 usrsctp_freeladdrs(struct sockaddr *addrs);
949 usrsctp_sendv(struct socket *so,
956 unsigned int infotype,
960 usrsctp_recvv(struct socket *so,
963 struct sockaddr *from,
967 unsigned int *infotype,
971 usrsctp_bind(struct socket *so,
972 struct sockaddr *name,
975 #define SCTP_BINDX_ADD_ADDR 0x00008001
976 #define SCTP_BINDX_REM_ADDR 0x00008002
979 usrsctp_bindx(struct socket *so,
980 struct sockaddr *addrs,
985 usrsctp_listen(struct socket *so,
989 usrsctp_accept(struct socket *so,
990 struct sockaddr * aname,
991 socklen_t * anamelen);
994 usrsctp_peeloff(struct socket *, sctp_assoc_t);
997 usrsctp_connect(struct socket *so,
998 struct sockaddr *name,
1002 usrsctp_connectx(struct socket *so,
1003 const struct sockaddr *addrs, int addrcnt,
1007 usrsctp_close(struct socket *so);
1010 usrsctp_getassocid(struct socket *, struct sockaddr *);
1013 usrsctp_finish(void);
1016 usrsctp_shutdown(struct socket *so, int how);
1019 usrsctp_conninput(void *, const void *, size_t, uint8_t);
1022 usrsctp_set_non_blocking(struct socket *, int);
1025 usrsctp_get_non_blocking(struct socket *);
1028 usrsctp_register_address(void *);
1031 usrsctp_deregister_address(void *);
1034 usrsctp_set_ulpinfo(struct socket *, void *);
1037 usrsctp_get_ulpinfo(struct socket *, void **);
1040 usrsctp_set_upcall(struct socket *so,
1041 void (*upcall)(struct socket *, void *, int),
1045 usrsctp_get_events(struct socket *so);
1049 usrsctp_handle_timers(uint32_t elapsed_milliseconds);
1051 #define SCTP_DUMP_OUTBOUND 1
1052 #define SCTP_DUMP_INBOUND 0
1055 usrsctp_dumppacket(const void *, size_t, int);
1058 usrsctp_freedumpbuffer(char *);
1061 usrsctp_enable_crc32c_offload(void);
1064 usrsctp_disable_crc32c_offload(void);
1067 usrsctp_crc32c(void *, size_t);
1069 #define USRSCTP_TUNABLE_DECL(__field) \
1070 int usrsctp_tunable_set_ ## __field(uint32_t value);\
1071 uint32_t usrsctp_sysctl_get_ ## __field(void);
1073 USRSCTP_TUNABLE_DECL(sctp_hashtblsize)
1074 USRSCTP_TUNABLE_DECL(sctp_pcbtblsize)
1075 USRSCTP_TUNABLE_DECL(sctp_chunkscale)
1077 #define USRSCTP_SYSCTL_DECL(__field) \
1078 int usrsctp_sysctl_set_ ## __field(uint32_t value);\
1079 uint32_t usrsctp_sysctl_get_ ## __field(void);
1081 USRSCTP_SYSCTL_DECL(sctp_sendspace)
1082 USRSCTP_SYSCTL_DECL(sctp_recvspace)
1083 USRSCTP_SYSCTL_DECL(sctp_auto_asconf)
1084 USRSCTP_SYSCTL_DECL(sctp_multiple_asconfs)
1085 USRSCTP_SYSCTL_DECL(sctp_ecn_enable)
1086 USRSCTP_SYSCTL_DECL(sctp_pr_enable)
1087 USRSCTP_SYSCTL_DECL(sctp_auth_enable)
1088 USRSCTP_SYSCTL_DECL(sctp_asconf_enable)
1089 USRSCTP_SYSCTL_DECL(sctp_reconfig_enable)
1090 USRSCTP_SYSCTL_DECL(sctp_nrsack_enable)
1091 USRSCTP_SYSCTL_DECL(sctp_pktdrop_enable)
1092 USRSCTP_SYSCTL_DECL(sctp_no_csum_on_loopback)
1093 USRSCTP_SYSCTL_DECL(sctp_peer_chunk_oh)
1094 USRSCTP_SYSCTL_DECL(sctp_max_burst_default)
1095 USRSCTP_SYSCTL_DECL(sctp_max_chunks_on_queue)
1096 USRSCTP_SYSCTL_DECL(sctp_min_split_point)
1097 USRSCTP_SYSCTL_DECL(sctp_delayed_sack_time_default)
1098 USRSCTP_SYSCTL_DECL(sctp_sack_freq_default)
1099 USRSCTP_SYSCTL_DECL(sctp_system_free_resc_limit)
1100 USRSCTP_SYSCTL_DECL(sctp_asoc_free_resc_limit)
1101 USRSCTP_SYSCTL_DECL(sctp_heartbeat_interval_default)
1102 USRSCTP_SYSCTL_DECL(sctp_pmtu_raise_time_default)
1103 USRSCTP_SYSCTL_DECL(sctp_shutdown_guard_time_default)
1104 USRSCTP_SYSCTL_DECL(sctp_secret_lifetime_default)
1105 USRSCTP_SYSCTL_DECL(sctp_rto_max_default)
1106 USRSCTP_SYSCTL_DECL(sctp_rto_min_default)
1107 USRSCTP_SYSCTL_DECL(sctp_rto_initial_default)
1108 USRSCTP_SYSCTL_DECL(sctp_init_rto_max_default)
1109 USRSCTP_SYSCTL_DECL(sctp_valid_cookie_life_default)
1110 USRSCTP_SYSCTL_DECL(sctp_init_rtx_max_default)
1111 USRSCTP_SYSCTL_DECL(sctp_assoc_rtx_max_default)
1112 USRSCTP_SYSCTL_DECL(sctp_path_rtx_max_default)
1113 USRSCTP_SYSCTL_DECL(sctp_add_more_threshold)
1114 USRSCTP_SYSCTL_DECL(sctp_nr_incoming_streams_default)
1115 USRSCTP_SYSCTL_DECL(sctp_nr_outgoing_streams_default)
1116 USRSCTP_SYSCTL_DECL(sctp_cmt_on_off)
1117 USRSCTP_SYSCTL_DECL(sctp_cmt_use_dac)
1118 USRSCTP_SYSCTL_DECL(sctp_use_cwnd_based_maxburst)
1119 USRSCTP_SYSCTL_DECL(sctp_nat_friendly)
1120 USRSCTP_SYSCTL_DECL(sctp_L2_abc_variable)
1121 USRSCTP_SYSCTL_DECL(sctp_mbuf_threshold_count)
1122 USRSCTP_SYSCTL_DECL(sctp_do_drain)
1123 USRSCTP_SYSCTL_DECL(sctp_hb_maxburst)
1124 USRSCTP_SYSCTL_DECL(sctp_abort_if_one_2_one_hits_limit)
1125 USRSCTP_SYSCTL_DECL(sctp_min_residual)
1126 USRSCTP_SYSCTL_DECL(sctp_max_retran_chunk)
1127 USRSCTP_SYSCTL_DECL(sctp_logging_level)
1128 USRSCTP_SYSCTL_DECL(sctp_default_cc_module)
1129 USRSCTP_SYSCTL_DECL(sctp_default_frag_interleave)
1130 USRSCTP_SYSCTL_DECL(sctp_mobility_base)
1131 USRSCTP_SYSCTL_DECL(sctp_mobility_fasthandoff)
1132 USRSCTP_SYSCTL_DECL(sctp_inits_include_nat_friendly)
1133 USRSCTP_SYSCTL_DECL(sctp_udp_tunneling_port)
1134 USRSCTP_SYSCTL_DECL(sctp_enable_sack_immediately)
1135 USRSCTP_SYSCTL_DECL(sctp_vtag_time_wait)
1136 USRSCTP_SYSCTL_DECL(sctp_blackhole)
1137 USRSCTP_SYSCTL_DECL(sctp_sendall_limit)
1138 USRSCTP_SYSCTL_DECL(sctp_diag_info_code)
1139 USRSCTP_SYSCTL_DECL(sctp_fr_max_burst_default)
1140 USRSCTP_SYSCTL_DECL(sctp_path_pf_threshold)
1141 USRSCTP_SYSCTL_DECL(sctp_default_ss_module)
1142 USRSCTP_SYSCTL_DECL(sctp_rttvar_bw)
1143 USRSCTP_SYSCTL_DECL(sctp_rttvar_rtt)
1144 USRSCTP_SYSCTL_DECL(sctp_rttvar_eqret)
1145 USRSCTP_SYSCTL_DECL(sctp_steady_step)
1146 USRSCTP_SYSCTL_DECL(sctp_use_dccc_ecn)
1147 USRSCTP_SYSCTL_DECL(sctp_buffer_splitting)
1148 USRSCTP_SYSCTL_DECL(sctp_initial_cwnd)
1150 USRSCTP_SYSCTL_DECL(sctp_debug_on)
1151 /* More specific values can be found in sctp_constants, but
1152 * are not considered to be part of the API.
1154 #define SCTP_DEBUG_NONE 0x00000000
1155 #define SCTP_DEBUG_ALL 0xffffffff
1157 #undef USRSCTP_SYSCTL_DECL
1158 struct sctp_timeval {
1164 struct sctp_timeval sctps_discontinuitytime; /* sctpStats 18 (TimeStamp) */
1165 /* MIB according to RFC 3873 */
1166 uint32_t sctps_currestab; /* sctpStats 1 (Gauge32) */
1167 uint32_t sctps_activeestab; /* sctpStats 2 (Counter32) */
1168 uint32_t sctps_restartestab;
1169 uint32_t sctps_collisionestab;
1170 uint32_t sctps_passiveestab; /* sctpStats 3 (Counter32) */
1171 uint32_t sctps_aborted; /* sctpStats 4 (Counter32) */
1172 uint32_t sctps_shutdown; /* sctpStats 5 (Counter32) */
1173 uint32_t sctps_outoftheblue; /* sctpStats 6 (Counter32) */
1174 uint32_t sctps_checksumerrors; /* sctpStats 7 (Counter32) */
1175 uint32_t sctps_outcontrolchunks; /* sctpStats 8 (Counter64) */
1176 uint32_t sctps_outorderchunks; /* sctpStats 9 (Counter64) */
1177 uint32_t sctps_outunorderchunks; /* sctpStats 10 (Counter64) */
1178 uint32_t sctps_incontrolchunks; /* sctpStats 11 (Counter64) */
1179 uint32_t sctps_inorderchunks; /* sctpStats 12 (Counter64) */
1180 uint32_t sctps_inunorderchunks; /* sctpStats 13 (Counter64) */
1181 uint32_t sctps_fragusrmsgs; /* sctpStats 14 (Counter64) */
1182 uint32_t sctps_reasmusrmsgs; /* sctpStats 15 (Counter64) */
1183 uint32_t sctps_outpackets; /* sctpStats 16 (Counter64) */
1184 uint32_t sctps_inpackets; /* sctpStats 17 (Counter64) */
1186 /* input statistics: */
1187 uint32_t sctps_recvpackets; /* total input packets */
1188 uint32_t sctps_recvdatagrams; /* total input datagrams */
1189 uint32_t sctps_recvpktwithdata; /* total packets that had data */
1190 uint32_t sctps_recvsacks; /* total input SACK chunks */
1191 uint32_t sctps_recvdata; /* total input DATA chunks */
1192 uint32_t sctps_recvdupdata; /* total input duplicate DATA chunks */
1193 uint32_t sctps_recvheartbeat; /* total input HB chunks */
1194 uint32_t sctps_recvheartbeatack; /* total input HB-ACK chunks */
1195 uint32_t sctps_recvecne; /* total input ECNE chunks */
1196 uint32_t sctps_recvauth; /* total input AUTH chunks */
1197 uint32_t sctps_recvauthmissing; /* total input chunks missing AUTH */
1198 uint32_t sctps_recvivalhmacid; /* total number of invalid HMAC ids received */
1199 uint32_t sctps_recvivalkeyid; /* total number of invalid secret ids received */
1200 uint32_t sctps_recvauthfailed; /* total number of auth failed */
1201 uint32_t sctps_recvexpress; /* total fast path receives all one chunk */
1202 uint32_t sctps_recvexpressm; /* total fast path multi-part data */
1203 uint32_t sctps_recv_spare; /* formerly sctps_recvnocrc */
1204 uint32_t sctps_recvswcrc;
1205 uint32_t sctps_recvhwcrc;
1207 /* output statistics: */
1208 uint32_t sctps_sendpackets; /* total output packets */
1209 uint32_t sctps_sendsacks; /* total output SACKs */
1210 uint32_t sctps_senddata; /* total output DATA chunks */
1211 uint32_t sctps_sendretransdata; /* total output retransmitted DATA chunks */
1212 uint32_t sctps_sendfastretrans; /* total output fast retransmitted DATA chunks */
1213 uint32_t sctps_sendmultfastretrans; /* total FR's that happened more than once
1214 * to same chunk (u-del multi-fr algo).
1216 uint32_t sctps_sendheartbeat; /* total output HB chunks */
1217 uint32_t sctps_sendecne; /* total output ECNE chunks */
1218 uint32_t sctps_sendauth; /* total output AUTH chunks FIXME */
1219 uint32_t sctps_senderrors; /* ip_output error counter */
1220 uint32_t sctps_send_spare; /* formerly sctps_sendnocrc */
1221 uint32_t sctps_sendswcrc;
1222 uint32_t sctps_sendhwcrc;
1223 /* PCKDROPREP statistics: */
1224 uint32_t sctps_pdrpfmbox; /* Packet drop from middle box */
1225 uint32_t sctps_pdrpfehos; /* P-drop from end host */
1226 uint32_t sctps_pdrpmbda; /* P-drops with data */
1227 uint32_t sctps_pdrpmbct; /* P-drops, non-data, non-endhost */
1228 uint32_t sctps_pdrpbwrpt; /* P-drop, non-endhost, bandwidth rep only */
1229 uint32_t sctps_pdrpcrupt; /* P-drop, not enough for chunk header */
1230 uint32_t sctps_pdrpnedat; /* P-drop, not enough data to confirm */
1231 uint32_t sctps_pdrppdbrk; /* P-drop, where process_chunk_drop said break */
1232 uint32_t sctps_pdrptsnnf; /* P-drop, could not find TSN */
1233 uint32_t sctps_pdrpdnfnd; /* P-drop, attempt reverse TSN lookup */
1234 uint32_t sctps_pdrpdiwnp; /* P-drop, e-host confirms zero-rwnd */
1235 uint32_t sctps_pdrpdizrw; /* P-drop, midbox confirms no space */
1236 uint32_t sctps_pdrpbadd; /* P-drop, data did not match TSN */
1237 uint32_t sctps_pdrpmark; /* P-drop, TSN's marked for Fast Retran */
1239 uint32_t sctps_timoiterator; /* Number of iterator timers that fired */
1240 uint32_t sctps_timodata; /* Number of T3 data time outs */
1241 uint32_t sctps_timowindowprobe; /* Number of window probe (T3) timers that fired */
1242 uint32_t sctps_timoinit; /* Number of INIT timers that fired */
1243 uint32_t sctps_timosack; /* Number of sack timers that fired */
1244 uint32_t sctps_timoshutdown; /* Number of shutdown timers that fired */
1245 uint32_t sctps_timoheartbeat; /* Number of heartbeat timers that fired */
1246 uint32_t sctps_timocookie; /* Number of times a cookie timeout fired */
1247 uint32_t sctps_timosecret; /* Number of times an endpoint changed its cookie secret*/
1248 uint32_t sctps_timopathmtu; /* Number of PMTU timers that fired */
1249 uint32_t sctps_timoshutdownack; /* Number of shutdown ack timers that fired */
1250 uint32_t sctps_timoshutdownguard; /* Number of shutdown guard timers that fired */
1251 uint32_t sctps_timostrmrst; /* Number of stream reset timers that fired */
1252 uint32_t sctps_timoearlyfr; /* Number of early FR timers that fired */
1253 uint32_t sctps_timoasconf; /* Number of times an asconf timer fired */
1254 uint32_t sctps_timodelprim; /* Number of times a prim_deleted timer fired */
1255 uint32_t sctps_timoautoclose; /* Number of times auto close timer fired */
1256 uint32_t sctps_timoassockill; /* Number of asoc free timers expired */
1257 uint32_t sctps_timoinpkill; /* Number of inp free timers expired */
1258 /* former early FR counters */
1259 uint32_t sctps_spare[11];
1261 uint32_t sctps_hdrops; /* packet shorter than header */
1262 uint32_t sctps_badsum; /* checksum error */
1263 uint32_t sctps_noport; /* no endpoint for port */
1264 uint32_t sctps_badvtag; /* bad v-tag */
1265 uint32_t sctps_badsid; /* bad SID */
1266 uint32_t sctps_nomem; /* no memory */
1267 uint32_t sctps_fastretransinrtt; /* number of multiple FR in a RTT window */
1268 uint32_t sctps_markedretrans;
1269 uint32_t sctps_naglesent; /* nagle allowed sending */
1270 uint32_t sctps_naglequeued; /* nagle doesn't allow sending */
1271 uint32_t sctps_maxburstqueued; /* max burst doesn't allow sending */
1272 uint32_t sctps_ifnomemqueued; /* look ahead tells us no memory in
1273 * interface ring buffer OR we had a
1274 * send error and are queuing one send.
1276 uint32_t sctps_windowprobed; /* total number of window probes sent */
1277 uint32_t sctps_lowlevelerr; /* total times an output error causes us
1278 * to clamp down on next user send.
1280 uint32_t sctps_lowlevelerrusr; /* total times sctp_senderrors were caused from
1281 * a user send from a user invoked send not
1284 uint32_t sctps_datadropchklmt; /* Number of in data drops due to chunk limit reached */
1285 uint32_t sctps_datadroprwnd; /* Number of in data drops due to rwnd limit reached */
1286 uint32_t sctps_ecnereducedcwnd; /* Number of times a ECN reduced the cwnd */
1287 uint32_t sctps_vtagexpress; /* Used express lookup via vtag */
1288 uint32_t sctps_vtagbogus; /* Collision in express lookup. */
1289 uint32_t sctps_primary_randry; /* Number of times the sender ran dry of user data on primary */
1290 uint32_t sctps_cmt_randry; /* Same for above */
1291 uint32_t sctps_slowpath_sack; /* Sacks the slow way */
1292 uint32_t sctps_wu_sacks_sent; /* Window Update only sacks sent */
1293 uint32_t sctps_sends_with_flags; /* number of sends with sinfo_flags !=0 */
1294 uint32_t sctps_sends_with_unord; /* number of unordered sends */
1295 uint32_t sctps_sends_with_eof; /* number of sends with EOF flag set */
1296 uint32_t sctps_sends_with_abort; /* number of sends with ABORT flag set */
1297 uint32_t sctps_protocol_drain_calls;/* number of times protocol drain called */
1298 uint32_t sctps_protocol_drains_done;/* number of times we did a protocol drain */
1299 uint32_t sctps_read_peeks; /* Number of times recv was called with peek */
1300 uint32_t sctps_cached_chk; /* Number of cached chunks used */
1301 uint32_t sctps_cached_strmoq; /* Number of cached stream oq's used */
1302 uint32_t sctps_left_abandon; /* Number of unread messages abandoned by close */
1303 uint32_t sctps_send_burst_avoid; /* Unused */
1304 uint32_t sctps_send_cwnd_avoid; /* Send cwnd full avoidance, already max burst inflight to net */
1305 uint32_t sctps_fwdtsn_map_over; /* number of map array over-runs via fwd-tsn's */
1306 uint32_t sctps_queue_upd_ecne; /* Number of times we queued or updated an ECN chunk on send queue */
1307 uint32_t sctps_reserved[31]; /* Future ABI compat - remove int's from here when adding new */
1311 usrsctp_get_stat(struct sctpstat *);
1315 #pragma warning(default: 4200)