summaryrefslogtreecommitdiffstats
path: root/netwerk/sctp/src/usrsctp.h
blob: 4c135a171db71eb1df98af1cff83eeb0a9669920 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
/*-
 * Copyright (c) 2009-2010 Brad Penoff
 * Copyright (c) 2009-2010 Humaira Kamal
 * Copyright (c) 2011-2012 Irene Ruengeler
 * Copyright (c) 2011-2012 Michael Tuexen
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __USRSCTP_H__
#define __USRSCTP_H__

#ifdef  __cplusplus
extern "C" {
#endif

#include <errno.h>
#include <sys/types.h>
#ifdef _WIN32
#ifdef _MSC_VER
#pragma warning(disable: 4200)
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#endif

#ifndef MSG_NOTIFICATION
/* This definition MUST be in sync with usrsctplib/user_socketvar.h */
#define MSG_NOTIFICATION 0x2000
#endif

#ifndef IPPROTO_SCTP
/* This is the IANA assigned protocol number of SCTP. */
#define IPPROTO_SCTP 132
#endif

#ifdef _WIN32
#if defined(_MSC_VER) && _MSC_VER >= 1600
#include <stdint.h>
#elif defined(SCTP_STDINT_INCLUDE)
#include SCTP_STDINT_INCLUDE
#else
typedef unsigned __int8  uint8_t;
typedef unsigned __int16 uint16_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
typedef          __int16 int16_t;
typedef          __int32 int32_t;
#endif

#ifndef ssize_t
#ifdef _WIN64
typedef __int64 ssize_t;
#elif defined _WIN32
typedef int ssize_t;
#else
#error "Unknown platform!"
#endif
#endif

#define MSG_EOR   0x8
#ifndef EWOULDBLOCK
#define EWOULDBLOCK  WSAEWOULDBLOCK
#endif
#ifndef EINPROGRESS
#define EINPROGRESS  WSAEINPROGRESS
#endif
#define SHUT_RD    1
#define SHUT_WR    2
#define SHUT_RDWR  3
#endif

typedef uint32_t sctp_assoc_t;

#if defined(_WIN32) && defined(_MSC_VER)
#pragma pack (push, 1)
#define SCTP_PACKED
#else
#define SCTP_PACKED __attribute__((packed))
#endif

struct sctp_common_header {
	uint16_t source_port;
	uint16_t destination_port;
	uint32_t verification_tag;
	uint32_t crc32c;
} SCTP_PACKED;

#if defined(_WIN32) && defined(_MSC_VER)
#pragma pack(pop)
#endif
#undef SCTP_PACKED

#define AF_CONN 123
/* The definition of struct sockaddr_conn MUST be in
 * tune with other sockaddr_* structures.
 */
#if defined(__APPLE__) || defined(__Bitrig__) || defined(__DragonFly__) || \
    defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
struct sockaddr_conn {
	uint8_t sconn_len;
	uint8_t sconn_family;
	uint16_t sconn_port;
	void *sconn_addr;
};
#else
struct sockaddr_conn {
	uint16_t sconn_family;
	uint16_t sconn_port;
	void *sconn_addr;
};
#endif

union sctp_sockstore {
	struct sockaddr_in sin;
	struct sockaddr_in6 sin6;
	struct sockaddr_conn sconn;
	struct sockaddr sa;
};

#define SCTP_FUTURE_ASSOC  0
#define SCTP_CURRENT_ASSOC 1
#define SCTP_ALL_ASSOC     2

#define SCTP_EVENT_READ    0x0001
#define SCTP_EVENT_WRITE   0x0002
#define SCTP_EVENT_ERROR   0x0004

/***  Structures and definitions to use the socket API  ***/

#define SCTP_ALIGN_RESV_PAD 92
#define SCTP_ALIGN_RESV_PAD_SHORT 76

struct sctp_rcvinfo {
	uint16_t rcv_sid;
	uint16_t rcv_ssn;
	uint16_t rcv_flags;
	uint32_t rcv_ppid;
	uint32_t rcv_tsn;
	uint32_t rcv_cumtsn;
	uint32_t rcv_context;
	sctp_assoc_t rcv_assoc_id;
};

struct sctp_nxtinfo {
	uint16_t nxt_sid;
	uint16_t nxt_flags;
	uint32_t nxt_ppid;
	uint32_t nxt_length;
	sctp_assoc_t nxt_assoc_id;
};

#define SCTP_NO_NEXT_MSG           0x0000
#define SCTP_NEXT_MSG_AVAIL        0x0001
#define SCTP_NEXT_MSG_ISCOMPLETE   0x0002
#define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
#define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008

struct sctp_recvv_rn {
	struct sctp_rcvinfo recvv_rcvinfo;
	struct sctp_nxtinfo recvv_nxtinfo;
};

#define SCTP_RECVV_NOINFO  0
#define SCTP_RECVV_RCVINFO 1
#define SCTP_RECVV_NXTINFO 2
#define SCTP_RECVV_RN      3

#define SCTP_SENDV_NOINFO   0
#define SCTP_SENDV_SNDINFO  1
#define SCTP_SENDV_PRINFO   2
#define SCTP_SENDV_AUTHINFO 3
#define SCTP_SENDV_SPA      4

#define SCTP_SEND_SNDINFO_VALID  0x00000001
#define SCTP_SEND_PRINFO_VALID   0x00000002
#define SCTP_SEND_AUTHINFO_VALID 0x00000004

struct sctp_snd_all_completes {
	uint16_t sall_stream;
	uint16_t sall_flags;
	uint32_t sall_ppid;
	uint32_t sall_context;
	uint32_t sall_num_sent;
	uint32_t sall_num_failed;
};

struct sctp_sndinfo {
	uint16_t snd_sid;
	uint16_t snd_flags;
	uint32_t snd_ppid;
	uint32_t snd_context;
	sctp_assoc_t snd_assoc_id;
};

struct sctp_prinfo {
	uint16_t pr_policy;
	uint32_t pr_value;
};

struct sctp_authinfo {
	uint16_t auth_keynumber;
};

struct sctp_sendv_spa {
	uint32_t sendv_flags;
	struct sctp_sndinfo sendv_sndinfo;
	struct sctp_prinfo sendv_prinfo;
	struct sctp_authinfo sendv_authinfo;
};

struct sctp_udpencaps {
	struct sockaddr_storage sue_address;
	uint32_t sue_assoc_id;
	uint16_t sue_port;
};

/********  Notifications  **************/

/* notification types */
#define SCTP_ASSOC_CHANGE                 0x0001
#define SCTP_PEER_ADDR_CHANGE             0x0002
#define SCTP_REMOTE_ERROR                 0x0003
#define SCTP_SEND_FAILED                  0x0004
#define SCTP_SHUTDOWN_EVENT               0x0005
#define SCTP_ADAPTATION_INDICATION        0x0006
#define SCTP_PARTIAL_DELIVERY_EVENT       0x0007
#define SCTP_AUTHENTICATION_EVENT         0x0008
#define SCTP_STREAM_RESET_EVENT           0x0009
#define SCTP_SENDER_DRY_EVENT             0x000a
#define SCTP_NOTIFICATIONS_STOPPED_EVENT  0x000b
#define SCTP_ASSOC_RESET_EVENT            0x000c
#define SCTP_STREAM_CHANGE_EVENT          0x000d
#define SCTP_SEND_FAILED_EVENT            0x000e

/* notification event structures */


/* association change event */
struct sctp_assoc_change {
	uint16_t sac_type;
	uint16_t sac_flags;
	uint32_t sac_length;
	uint16_t sac_state;
	uint16_t sac_error;
	uint16_t sac_outbound_streams;
	uint16_t sac_inbound_streams;
	sctp_assoc_t sac_assoc_id;
	uint8_t sac_info[]; /* not available yet */
};

/* sac_state values */
#define SCTP_COMM_UP        0x0001
#define SCTP_COMM_LOST      0x0002
#define SCTP_RESTART        0x0003
#define SCTP_SHUTDOWN_COMP  0x0004
#define SCTP_CANT_STR_ASSOC 0x0005

/* sac_info values */
#define SCTP_ASSOC_SUPPORTS_PR           0x01
#define SCTP_ASSOC_SUPPORTS_AUTH         0x02
#define SCTP_ASSOC_SUPPORTS_ASCONF       0x03
#define SCTP_ASSOC_SUPPORTS_MULTIBUF     0x04
#define SCTP_ASSOC_SUPPORTS_RE_CONFIG    0x05
#define SCTP_ASSOC_SUPPORTS_INTERLEAVING 0x06
#define SCTP_ASSOC_SUPPORTS_MAX          0x06

/* Address event */
struct sctp_paddr_change {
	uint16_t spc_type;
	uint16_t spc_flags;
	uint32_t spc_length;
	struct sockaddr_storage spc_aaddr;
	uint32_t spc_state;
	uint32_t spc_error;
	sctp_assoc_t spc_assoc_id;
	uint8_t spc_padding[4];
};

/* paddr state values */
#define SCTP_ADDR_AVAILABLE   0x0001
#define SCTP_ADDR_UNREACHABLE 0x0002
#define SCTP_ADDR_REMOVED     0x0003
#define SCTP_ADDR_ADDED       0x0004
#define SCTP_ADDR_MADE_PRIM   0x0005
#define SCTP_ADDR_CONFIRMED   0x0006

/* remote error events */
struct sctp_remote_error {
	uint16_t sre_type;
	uint16_t sre_flags;
	uint32_t sre_length;
	uint16_t sre_error;
	sctp_assoc_t sre_assoc_id;
	uint8_t sre_data[];
};

/* shutdown event */
struct sctp_shutdown_event {
	uint16_t sse_type;
	uint16_t sse_flags;
	uint32_t sse_length;
	sctp_assoc_t sse_assoc_id;
};

/* Adaptation layer indication */
struct sctp_adaptation_event {
	uint16_t sai_type;
	uint16_t sai_flags;
	uint32_t sai_length;
	uint32_t sai_adaptation_ind;
	sctp_assoc_t sai_assoc_id;
};

/* Partial delivery event */
struct sctp_pdapi_event {
	uint16_t pdapi_type;
	uint16_t pdapi_flags;
	uint32_t pdapi_length;
	uint32_t pdapi_indication;
	uint32_t pdapi_stream;
	uint32_t pdapi_seq;
	sctp_assoc_t pdapi_assoc_id;
};

/* indication values */
#define SCTP_PARTIAL_DELIVERY_ABORTED  0x0001

/* SCTP authentication event */
struct sctp_authkey_event {
	uint16_t auth_type;
	uint16_t auth_flags;
	uint32_t auth_length;
	uint16_t auth_keynumber;
	uint32_t auth_indication;
	sctp_assoc_t auth_assoc_id;
};

/* indication values */
#define SCTP_AUTH_NEW_KEY   0x0001
#define SCTP_AUTH_NO_AUTH   0x0002
#define SCTP_AUTH_FREE_KEY  0x0003

/* SCTP sender dry event */
struct sctp_sender_dry_event {
	uint16_t sender_dry_type;
	uint16_t sender_dry_flags;
	uint32_t sender_dry_length;
	sctp_assoc_t sender_dry_assoc_id;
};


/* Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT */
struct sctp_stream_reset_event {
	uint16_t strreset_type;
	uint16_t strreset_flags;
	uint32_t strreset_length;
	sctp_assoc_t strreset_assoc_id;
	uint16_t strreset_stream_list[];
};

/* flags in stream_reset_event (strreset_flags) */
#define SCTP_STREAM_RESET_INCOMING_SSN  0x0001
#define SCTP_STREAM_RESET_OUTGOING_SSN  0x0002
#define SCTP_STREAM_RESET_DENIED        0x0004 /* SCTP_STRRESET_FAILED */
#define SCTP_STREAM_RESET_FAILED        0x0008 /* SCTP_STRRESET_FAILED */
#define SCTP_STREAM_CHANGED_DENIED      0x0010

#define SCTP_STREAM_RESET_INCOMING      0x00000001
#define SCTP_STREAM_RESET_OUTGOING      0x00000002


/* Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT */
struct sctp_assoc_reset_event {
	uint16_t assocreset_type;
	uint16_t assocreset_flags;
	uint32_t assocreset_length;
	sctp_assoc_t assocreset_assoc_id;
	uint32_t assocreset_local_tsn;
	uint32_t assocreset_remote_tsn;
};

#define SCTP_ASSOC_RESET_DENIED        0x0004
#define SCTP_ASSOC_RESET_FAILED        0x0008


/* Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT */
struct sctp_stream_change_event {
	uint16_t strchange_type;
	uint16_t strchange_flags;
	uint32_t strchange_length;
	sctp_assoc_t strchange_assoc_id;
	uint16_t strchange_instrms;
	uint16_t strchange_outstrms;
};

#define SCTP_STREAM_CHANGE_DENIED	0x0004
#define SCTP_STREAM_CHANGE_FAILED	0x0008


/* SCTP send failed event */
struct sctp_send_failed_event {
	uint16_t ssfe_type;
	uint16_t ssfe_flags;
	uint32_t ssfe_length;
	uint32_t ssfe_error;
	struct sctp_sndinfo ssfe_info;
	sctp_assoc_t ssfe_assoc_id;
	uint8_t  ssfe_data[];
};

/* flag that indicates state of data */
#define SCTP_DATA_UNSENT  0x0001	/* inqueue never on wire */
#define SCTP_DATA_SENT    0x0002	/* on wire at failure */

/* SCTP event option */
struct sctp_event {
	sctp_assoc_t   se_assoc_id;
	uint16_t       se_type;
	uint8_t        se_on;
};

union sctp_notification {
	struct sctp_tlv {
		uint16_t sn_type;
		uint16_t sn_flags;
		uint32_t sn_length;
	} sn_header;
	struct sctp_assoc_change sn_assoc_change;
	struct sctp_paddr_change sn_paddr_change;
	struct sctp_remote_error sn_remote_error;
	struct sctp_shutdown_event sn_shutdown_event;
	struct sctp_adaptation_event sn_adaptation_event;
	struct sctp_pdapi_event sn_pdapi_event;
	struct sctp_authkey_event sn_auth_event;
	struct sctp_sender_dry_event sn_sender_dry_event;
	struct sctp_send_failed_event sn_send_failed_event;
	struct sctp_stream_reset_event sn_strreset_event;
	struct sctp_assoc_reset_event  sn_assocreset_event;
	struct sctp_stream_change_event sn_strchange_event;
};

struct sctp_event_subscribe {
	uint8_t sctp_data_io_event;
	uint8_t sctp_association_event;
	uint8_t sctp_address_event;
	uint8_t sctp_send_failure_event;
	uint8_t sctp_peer_error_event;
	uint8_t sctp_shutdown_event;
	uint8_t sctp_partial_delivery_event;
	uint8_t sctp_adaptation_layer_event;
	uint8_t sctp_authentication_event;
	uint8_t sctp_sender_dry_event;
	uint8_t sctp_stream_reset_event;
};



/* Flags that go into the sinfo->sinfo_flags field */
#define SCTP_DATA_LAST_FRAG   0x0001 /* tail part of the message could not be sent */
#define SCTP_DATA_NOT_FRAG    0x0003 /* complete message could not be sent */
#define SCTP_NOTIFICATION     0x0010 /* next message is a notification */
#define SCTP_COMPLETE         0x0020 /* next message is complete */
#define SCTP_EOF              0x0100 /* Start shutdown procedures */
#define SCTP_ABORT            0x0200 /* Send an ABORT to peer */
#define SCTP_UNORDERED        0x0400 /* Message is un-ordered */
#define SCTP_ADDR_OVER        0x0800 /* Override the primary-address */
#define SCTP_SENDALL          0x1000 /* Send this on all associations */
#define SCTP_EOR              0x2000 /* end of message signal */
#define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */

#define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
                                    & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
				        SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
					SCTP_SACK_IMMEDIATELY)) != 0)
/* for the endpoint */

/* The lower byte is an enumeration of PR-SCTP policies */
#define SCTP_PR_SCTP_NONE 0x0000 /* Reliable transfer */
#define SCTP_PR_SCTP_TTL  0x0001 /* Time based PR-SCTP */
#define SCTP_PR_SCTP_BUF  0x0002 /* Buffer based PR-SCTP */
#define SCTP_PR_SCTP_RTX  0x0003 /* Number of retransmissions based PR-SCTP */

#define PR_SCTP_POLICY(x)         ((x) & 0x0f)
#define PR_SCTP_ENABLED(x)        (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE)
#define PR_SCTP_TTL_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
#define PR_SCTP_BUF_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
#define PR_SCTP_RTX_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
#define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_RTX)


/*
 * user socket options: socket API defined
 */
/*
 * read-write options
 */
#define SCTP_RTOINFO                    0x00000001
#define SCTP_ASSOCINFO                  0x00000002
#define SCTP_INITMSG                    0x00000003
#define SCTP_NODELAY                    0x00000004
#define SCTP_AUTOCLOSE                  0x00000005
#define SCTP_PRIMARY_ADDR               0x00000007
#define SCTP_ADAPTATION_LAYER           0x00000008
#define SCTP_DISABLE_FRAGMENTS          0x00000009
#define SCTP_PEER_ADDR_PARAMS           0x0000000a
/* ancillary data/notification interest options */
/* Without this applied we will give V4 and V6 addresses on a V6 socket */
#define SCTP_I_WANT_MAPPED_V4_ADDR      0x0000000d
#define SCTP_MAXSEG                     0x0000000e
#define SCTP_DELAYED_SACK               0x0000000f
#define SCTP_FRAGMENT_INTERLEAVE        0x00000010
#define SCTP_PARTIAL_DELIVERY_POINT     0x00000011
/* authentication support */
#define SCTP_HMAC_IDENT                 0x00000014
#define SCTP_AUTH_ACTIVE_KEY            0x00000015
#define SCTP_AUTO_ASCONF                0x00000018
#define SCTP_MAX_BURST                  0x00000019
/* assoc level context */
#define SCTP_CONTEXT                    0x0000001a
/* explicit EOR signalling */
#define SCTP_EXPLICIT_EOR               0x0000001b
#define SCTP_REUSE_PORT                 0x0000001c

#define SCTP_EVENT                      0x0000001e
#define SCTP_RECVRCVINFO                0x0000001f
#define SCTP_RECVNXTINFO                0x00000020
#define SCTP_DEFAULT_SNDINFO            0x00000021
#define SCTP_DEFAULT_PRINFO             0x00000022
#define SCTP_REMOTE_UDP_ENCAPS_PORT     0x00000024
#define SCTP_ECN_SUPPORTED              0x00000025
#define SCTP_PR_SUPPORTED               0x00000026
#define SCTP_AUTH_SUPPORTED             0x00000027
#define SCTP_ASCONF_SUPPORTED           0x00000028
#define SCTP_RECONFIG_SUPPORTED         0x00000029
#define SCTP_NRSACK_SUPPORTED           0x00000030
#define SCTP_PKTDROP_SUPPORTED          0x00000031
#define SCTP_MAX_CWND                   0x00000032

#define SCTP_ENABLE_STREAM_RESET        0x00000900 /* struct sctp_assoc_value */

/* Pluggable Stream Scheduling Socket option */
#define SCTP_PLUGGABLE_SS               0x00001203
#define SCTP_SS_VALUE                   0x00001204

/*
 * read-only options
 */
#define SCTP_STATUS                     0x00000100
#define SCTP_GET_PEER_ADDR_INFO         0x00000101
/* authentication support */
#define SCTP_PEER_AUTH_CHUNKS           0x00000102
#define SCTP_LOCAL_AUTH_CHUNKS          0x00000103
#define SCTP_GET_ASSOC_NUMBER           0x00000104
#define SCTP_GET_ASSOC_ID_LIST          0x00000105
#define SCTP_TIMEOUTS                   0x00000106
#define SCTP_PR_STREAM_STATUS           0x00000107
#define SCTP_PR_ASSOC_STATUS            0x00000108

/*
 * write-only options
 */
#define SCTP_SET_PEER_PRIMARY_ADDR      0x00000006
#define SCTP_AUTH_CHUNK                 0x00000012
#define SCTP_AUTH_KEY                   0x00000013
#define SCTP_AUTH_DEACTIVATE_KEY        0x0000001d
#define SCTP_AUTH_DELETE_KEY            0x00000016
#define SCTP_RESET_STREAMS              0x00000901 /* struct sctp_reset_streams */
#define SCTP_RESET_ASSOC                0x00000902 /* sctp_assoc_t */
#define SCTP_ADD_STREAMS                0x00000903 /* struct sctp_add_streams */

struct sctp_initmsg {
	uint16_t sinit_num_ostreams;
	uint16_t sinit_max_instreams;
	uint16_t sinit_max_attempts;
	uint16_t sinit_max_init_timeo;
};

struct sctp_rtoinfo {
	sctp_assoc_t srto_assoc_id;
	uint32_t srto_initial;
	uint32_t srto_max;
	uint32_t srto_min;
};

struct sctp_assocparams {
	sctp_assoc_t sasoc_assoc_id;
	uint32_t sasoc_peer_rwnd;
	uint32_t sasoc_local_rwnd;
	uint32_t sasoc_cookie_life;
	uint16_t sasoc_asocmaxrxt;
	uint16_t sasoc_number_peer_destinations;
};

struct sctp_setprim {
	struct sockaddr_storage ssp_addr;
	sctp_assoc_t ssp_assoc_id;
	uint8_t ssp_padding[4];
};

struct sctp_setadaptation {
	uint32_t   ssb_adaptation_ind;
};

struct sctp_paddrparams {
	struct sockaddr_storage spp_address;
	sctp_assoc_t spp_assoc_id;
	uint32_t spp_hbinterval;
	uint32_t spp_pathmtu;
	uint32_t spp_flags;
	uint32_t spp_ipv6_flowlabel;
	uint16_t spp_pathmaxrxt;
	uint8_t spp_dscp;
};

#define SPP_HB_ENABLE       0x00000001
#define SPP_HB_DISABLE      0x00000002
#define SPP_HB_DEMAND       0x00000004
#define SPP_PMTUD_ENABLE    0x00000008
#define SPP_PMTUD_DISABLE   0x00000010
#define SPP_HB_TIME_IS_ZERO 0x00000080
#define SPP_IPV6_FLOWLABEL  0x00000100
#define SPP_DSCP            0x00000200

/* Used for SCTP_MAXSEG, SCTP_MAX_BURST, SCTP_ENABLE_STREAM_RESET, and SCTP_CONTEXT */
struct sctp_assoc_value {
	sctp_assoc_t assoc_id;
	uint32_t assoc_value;
};

/* To enable stream reset */
#define SCTP_ENABLE_RESET_STREAM_REQ  0x00000001
#define SCTP_ENABLE_RESET_ASSOC_REQ   0x00000002
#define SCTP_ENABLE_CHANGE_ASSOC_REQ  0x00000004
#define SCTP_ENABLE_VALUE_MASK        0x00000007

struct sctp_reset_streams {
	sctp_assoc_t srs_assoc_id;
	uint16_t srs_flags;
	uint16_t srs_number_streams;  /* 0 == ALL */
	uint16_t srs_stream_list[];   /* list if strrst_num_streams is not 0 */
};

struct sctp_add_streams {
	sctp_assoc_t	sas_assoc_id;
	uint16_t	sas_instrms;
	uint16_t	sas_outstrms;
};

struct sctp_hmacalgo {
	uint32_t shmac_number_of_idents;
	uint16_t shmac_idents[];
};

/* AUTH hmac_id */
#define SCTP_AUTH_HMAC_ID_RSVD    0x0000
#define SCTP_AUTH_HMAC_ID_SHA1    0x0001	/* default, mandatory */
#define SCTP_AUTH_HMAC_ID_SHA256  0x0003
#define SCTP_AUTH_HMAC_ID_SHA224  0x0004
#define SCTP_AUTH_HMAC_ID_SHA384  0x0005
#define SCTP_AUTH_HMAC_ID_SHA512  0x0006


struct sctp_sack_info {
	sctp_assoc_t sack_assoc_id;
	uint32_t sack_delay;
	uint32_t sack_freq;
};

struct sctp_default_prinfo {
	uint16_t pr_policy;
	uint32_t pr_value;
	sctp_assoc_t pr_assoc_id;
};

struct sctp_paddrinfo {
	struct sockaddr_storage spinfo_address;
	sctp_assoc_t spinfo_assoc_id;
	int32_t spinfo_state;
	uint32_t spinfo_cwnd;
	uint32_t spinfo_srtt;
	uint32_t spinfo_rto;
	uint32_t spinfo_mtu;
};

struct sctp_status {
	sctp_assoc_t sstat_assoc_id;
	int32_t  sstat_state;
	uint32_t sstat_rwnd;
	uint16_t sstat_unackdata;
	uint16_t sstat_penddata;
	uint16_t sstat_instrms;
	uint16_t sstat_outstrms;
	uint32_t sstat_fragmentation_point;
	struct sctp_paddrinfo sstat_primary;
};

/*
 * user state values
 */
#define SCTP_CLOSED             0x0000
#define SCTP_BOUND              0x1000
#define SCTP_LISTEN             0x2000
#define SCTP_COOKIE_WAIT        0x0002
#define SCTP_COOKIE_ECHOED      0x0004
#define SCTP_ESTABLISHED        0x0008
#define SCTP_SHUTDOWN_SENT      0x0010
#define SCTP_SHUTDOWN_RECEIVED  0x0020
#define SCTP_SHUTDOWN_ACK_SENT  0x0040
#define SCTP_SHUTDOWN_PENDING   0x0080


#define SCTP_ACTIVE       0x0001  /* SCTP_ADDR_REACHABLE */
#define SCTP_INACTIVE     0x0002  /* neither SCTP_ADDR_REACHABLE
                                     nor SCTP_ADDR_UNCONFIRMED */
#define SCTP_UNCONFIRMED  0x0200  /* SCTP_ADDR_UNCONFIRMED */

struct sctp_authchunks {
	sctp_assoc_t gauth_assoc_id;
/*	uint32_t gauth_number_of_chunks; not available */
	uint8_t  gauth_chunks[];
};

struct sctp_assoc_ids {
	uint32_t gaids_number_of_ids;
	sctp_assoc_t gaids_assoc_id[];
};

struct sctp_setpeerprim {
	struct sockaddr_storage sspp_addr;
	sctp_assoc_t sspp_assoc_id;
	uint8_t sspp_padding[4];
};

struct sctp_authchunk {
	uint8_t sauth_chunk;
};


struct sctp_get_nonce_values {
	sctp_assoc_t gn_assoc_id;
	uint32_t gn_peers_tag;
	uint32_t gn_local_tag;
};


/*
 * Main SCTP chunk types
 */
/************0x00 series ***********/
#define SCTP_DATA               0x00
#define SCTP_INITIATION         0x01
#define SCTP_INITIATION_ACK     0x02
#define SCTP_SELECTIVE_ACK      0x03
#define SCTP_HEARTBEAT_REQUEST  0x04
#define SCTP_HEARTBEAT_ACK      0x05
#define SCTP_ABORT_ASSOCIATION  0x06
#define SCTP_SHUTDOWN           0x07
#define SCTP_SHUTDOWN_ACK       0x08
#define SCTP_OPERATION_ERROR    0x09
#define SCTP_COOKIE_ECHO        0x0a
#define SCTP_COOKIE_ACK         0x0b
#define SCTP_ECN_ECHO           0x0c
#define SCTP_ECN_CWR            0x0d
#define SCTP_SHUTDOWN_COMPLETE  0x0e
/* RFC4895 */
#define SCTP_AUTHENTICATION     0x0f
/* EY nr_sack chunk id*/
#define SCTP_NR_SELECTIVE_ACK   0x10
/************0x40 series ***********/
/************0x80 series ***********/
/* RFC5061 */
#define	SCTP_ASCONF_ACK         0x80
/* draft-ietf-stewart-pktdrpsctp */
#define SCTP_PACKET_DROPPED     0x81
/* draft-ietf-stewart-strreset-xxx */
#define SCTP_STREAM_RESET       0x82

/* RFC4820                         */
#define SCTP_PAD_CHUNK          0x84
/************0xc0 series ***********/
/* RFC3758 */
#define SCTP_FORWARD_CUM_TSN    0xc0
/* RFC5061 */
#define SCTP_ASCONF             0xc1

struct sctp_authkey {
	sctp_assoc_t sca_assoc_id;
	uint16_t sca_keynumber;
	uint16_t sca_keylength;
	uint8_t  sca_key[];
};

struct sctp_authkeyid {
	sctp_assoc_t scact_assoc_id;
	uint16_t scact_keynumber;
};

struct sctp_cc_option {
	int option;
	struct sctp_assoc_value aid_value;
};

struct sctp_stream_value {
	sctp_assoc_t assoc_id;
	uint16_t stream_id;
	uint16_t stream_value;
};

struct sctp_timeouts {
	sctp_assoc_t stimo_assoc_id;
	uint32_t stimo_init;
	uint32_t stimo_data;
	uint32_t stimo_sack;
	uint32_t stimo_shutdown;
	uint32_t stimo_heartbeat;
	uint32_t stimo_cookie;
	uint32_t stimo_shutdownack;
};

struct sctp_prstatus {
	sctp_assoc_t sprstat_assoc_id;
	uint16_t sprstat_sid;
	uint16_t sprstat_policy;
	uint64_t sprstat_abandoned_unsent;
	uint64_t sprstat_abandoned_sent;
};

/* Standard TCP Congestion Control */
#define SCTP_CC_RFC2581         0x00000000
/* High Speed TCP Congestion Control (Floyd) */
#define SCTP_CC_HSTCP           0x00000001
/* HTCP Congestion Control */
#define SCTP_CC_HTCP            0x00000002
/* RTCC Congestion Control - RFC2581 plus */
#define SCTP_CC_RTCC            0x00000003

#define SCTP_CC_OPT_RTCC_SETMODE 0x00002000
#define SCTP_CC_OPT_USE_DCCC_EC  0x00002001
#define SCTP_CC_OPT_STEADY_STEP  0x00002002

#define SCTP_CMT_OFF            0
#define SCTP_CMT_BASE           1
#define SCTP_CMT_RPV1           2
#define SCTP_CMT_RPV2           3
#define SCTP_CMT_MPTCP          4
#define SCTP_CMT_MAX            SCTP_CMT_MPTCP

/* RS - Supported stream scheduling modules for pluggable
 * stream scheduling
 */
/* Default simple round-robin */
#define SCTP_SS_DEFAULT             0x00000000
/* Real round-robin */
#define SCTP_SS_ROUND_ROBIN         0x00000001
/* Real round-robin per packet */
#define SCTP_SS_ROUND_ROBIN_PACKET  0x00000002
/* Priority */
#define SCTP_SS_PRIORITY            0x00000003
/* Fair Bandwidth */
#define SCTP_SS_FAIR_BANDWITH       0x00000004
/* First-come, first-serve */
#define SCTP_SS_FIRST_COME          0x00000005

/******************** System calls *************/

struct socket;

void
usrsctp_init(uint16_t,
             int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
             void (*)(const char *format, ...));

void
usrsctp_init_nothreads(uint16_t,
		       int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
		       void (*)(const char *format, ...));

struct socket *
usrsctp_socket(int domain, int type, int protocol,
               int (*receive_cb)(struct socket *sock, union sctp_sockstore addr, void *data,
                                 size_t datalen, struct sctp_rcvinfo, int flags, void *ulp_info),
               int (*send_cb)(struct socket *sock, uint32_t sb_free, void *ulp_info),
               uint32_t sb_threshold,
               void *ulp_info);

int
usrsctp_setsockopt(struct socket *so,
                   int level,
                   int option_name,
                   const void *option_value,
                   socklen_t option_len);

int
usrsctp_getsockopt(struct socket *so,
                   int level,
                   int option_name,
                   void *option_value,
                   socklen_t *option_len);

int
usrsctp_opt_info(struct socket *so,
                 sctp_assoc_t id,
                 int opt,
                 void *arg,
                 socklen_t *size);

int
usrsctp_getpaddrs(struct socket *so,
                  sctp_assoc_t id,
                  struct sockaddr **raddrs);

void
usrsctp_freepaddrs(struct sockaddr *addrs);

int
usrsctp_getladdrs(struct socket *so,
                  sctp_assoc_t id,
                  struct sockaddr **raddrs);

void
usrsctp_freeladdrs(struct sockaddr *addrs);

ssize_t
usrsctp_sendv(struct socket *so,
              const void *data,
              size_t len,
              struct sockaddr *to,
              int addrcnt,
              void *info,
              socklen_t infolen,
              unsigned int infotype,
              int flags);

ssize_t
usrsctp_recvv(struct socket *so,
              void *dbuf,
              size_t len,
              struct sockaddr *from,
              socklen_t * fromlen,
              void *info,
              socklen_t *infolen,
              unsigned int *infotype,
              int *msg_flags);

int
usrsctp_bind(struct socket *so,
             struct sockaddr *name,
             socklen_t namelen);

#define SCTP_BINDX_ADD_ADDR 0x00008001
#define SCTP_BINDX_REM_ADDR 0x00008002

int
usrsctp_bindx(struct socket *so,
              struct sockaddr *addrs,
              int addrcnt,
              int flags);

int
usrsctp_listen(struct socket *so,
               int backlog);

struct socket *
usrsctp_accept(struct socket *so,
               struct sockaddr * aname,
               socklen_t * anamelen);

struct socket *
usrsctp_peeloff(struct socket *, sctp_assoc_t);

int
usrsctp_connect(struct socket *so,
                struct sockaddr *name,
                socklen_t namelen);

int
usrsctp_connectx(struct socket *so,
                 const struct sockaddr *addrs, int addrcnt,
                 sctp_assoc_t *id);

void
usrsctp_close(struct socket *so);

sctp_assoc_t
usrsctp_getassocid(struct socket *, struct sockaddr *);

int
usrsctp_finish(void);

int
usrsctp_shutdown(struct socket *so, int how);

void
usrsctp_conninput(void *, const void *, size_t, uint8_t);

int
usrsctp_set_non_blocking(struct socket *, int);

int
usrsctp_get_non_blocking(struct socket *);

void
usrsctp_register_address(void *);

void
usrsctp_deregister_address(void *);

int
usrsctp_set_ulpinfo(struct socket *, void *);

int
usrsctp_get_ulpinfo(struct socket *, void **);

int
usrsctp_set_upcall(struct socket *so,
                   void (*upcall)(struct socket *, void *, int),
                   void *arg);

int
usrsctp_get_events(struct socket *so);


void
usrsctp_handle_timers(uint32_t elapsed_milliseconds);

#define SCTP_DUMP_OUTBOUND 1
#define SCTP_DUMP_INBOUND  0

char *
usrsctp_dumppacket(const void *, size_t, int);

void
usrsctp_freedumpbuffer(char *);

void
usrsctp_enable_crc32c_offload(void);

void
usrsctp_disable_crc32c_offload(void);

uint32_t
usrsctp_crc32c(void *, size_t);

#define USRSCTP_TUNABLE_DECL(__field)               \
int usrsctp_tunable_set_ ## __field(uint32_t value);\
uint32_t usrsctp_sysctl_get_ ## __field(void);

USRSCTP_TUNABLE_DECL(sctp_hashtblsize)
USRSCTP_TUNABLE_DECL(sctp_pcbtblsize)
USRSCTP_TUNABLE_DECL(sctp_chunkscale)

#define USRSCTP_SYSCTL_DECL(__field)               \
int usrsctp_sysctl_set_ ## __field(uint32_t value);\
uint32_t usrsctp_sysctl_get_ ## __field(void);

USRSCTP_SYSCTL_DECL(sctp_sendspace)
USRSCTP_SYSCTL_DECL(sctp_recvspace)
USRSCTP_SYSCTL_DECL(sctp_auto_asconf)
USRSCTP_SYSCTL_DECL(sctp_multiple_asconfs)
USRSCTP_SYSCTL_DECL(sctp_ecn_enable)
USRSCTP_SYSCTL_DECL(sctp_pr_enable)
USRSCTP_SYSCTL_DECL(sctp_auth_enable)
USRSCTP_SYSCTL_DECL(sctp_asconf_enable)
USRSCTP_SYSCTL_DECL(sctp_reconfig_enable)
USRSCTP_SYSCTL_DECL(sctp_nrsack_enable)
USRSCTP_SYSCTL_DECL(sctp_pktdrop_enable)
USRSCTP_SYSCTL_DECL(sctp_no_csum_on_loopback)
USRSCTP_SYSCTL_DECL(sctp_peer_chunk_oh)
USRSCTP_SYSCTL_DECL(sctp_max_burst_default)
USRSCTP_SYSCTL_DECL(sctp_max_chunks_on_queue)
USRSCTP_SYSCTL_DECL(sctp_min_split_point)
USRSCTP_SYSCTL_DECL(sctp_delayed_sack_time_default)
USRSCTP_SYSCTL_DECL(sctp_sack_freq_default)
USRSCTP_SYSCTL_DECL(sctp_system_free_resc_limit)
USRSCTP_SYSCTL_DECL(sctp_asoc_free_resc_limit)
USRSCTP_SYSCTL_DECL(sctp_heartbeat_interval_default)
USRSCTP_SYSCTL_DECL(sctp_pmtu_raise_time_default)
USRSCTP_SYSCTL_DECL(sctp_shutdown_guard_time_default)
USRSCTP_SYSCTL_DECL(sctp_secret_lifetime_default)
USRSCTP_SYSCTL_DECL(sctp_rto_max_default)
USRSCTP_SYSCTL_DECL(sctp_rto_min_default)
USRSCTP_SYSCTL_DECL(sctp_rto_initial_default)
USRSCTP_SYSCTL_DECL(sctp_init_rto_max_default)
USRSCTP_SYSCTL_DECL(sctp_valid_cookie_life_default)
USRSCTP_SYSCTL_DECL(sctp_init_rtx_max_default)
USRSCTP_SYSCTL_DECL(sctp_assoc_rtx_max_default)
USRSCTP_SYSCTL_DECL(sctp_path_rtx_max_default)
USRSCTP_SYSCTL_DECL(sctp_add_more_threshold)
USRSCTP_SYSCTL_DECL(sctp_nr_incoming_streams_default)
USRSCTP_SYSCTL_DECL(sctp_nr_outgoing_streams_default)
USRSCTP_SYSCTL_DECL(sctp_cmt_on_off)
USRSCTP_SYSCTL_DECL(sctp_cmt_use_dac)
USRSCTP_SYSCTL_DECL(sctp_use_cwnd_based_maxburst)
USRSCTP_SYSCTL_DECL(sctp_nat_friendly)
USRSCTP_SYSCTL_DECL(sctp_L2_abc_variable)
USRSCTP_SYSCTL_DECL(sctp_mbuf_threshold_count)
USRSCTP_SYSCTL_DECL(sctp_do_drain)
USRSCTP_SYSCTL_DECL(sctp_hb_maxburst)
USRSCTP_SYSCTL_DECL(sctp_abort_if_one_2_one_hits_limit)
USRSCTP_SYSCTL_DECL(sctp_min_residual)
USRSCTP_SYSCTL_DECL(sctp_max_retran_chunk)
USRSCTP_SYSCTL_DECL(sctp_logging_level)
USRSCTP_SYSCTL_DECL(sctp_default_cc_module)
USRSCTP_SYSCTL_DECL(sctp_default_frag_interleave)
USRSCTP_SYSCTL_DECL(sctp_mobility_base)
USRSCTP_SYSCTL_DECL(sctp_mobility_fasthandoff)
USRSCTP_SYSCTL_DECL(sctp_inits_include_nat_friendly)
USRSCTP_SYSCTL_DECL(sctp_udp_tunneling_port)
USRSCTP_SYSCTL_DECL(sctp_enable_sack_immediately)
USRSCTP_SYSCTL_DECL(sctp_vtag_time_wait)
USRSCTP_SYSCTL_DECL(sctp_blackhole)
USRSCTP_SYSCTL_DECL(sctp_sendall_limit)
USRSCTP_SYSCTL_DECL(sctp_diag_info_code)
USRSCTP_SYSCTL_DECL(sctp_fr_max_burst_default)
USRSCTP_SYSCTL_DECL(sctp_path_pf_threshold)
USRSCTP_SYSCTL_DECL(sctp_default_ss_module)
USRSCTP_SYSCTL_DECL(sctp_rttvar_bw)
USRSCTP_SYSCTL_DECL(sctp_rttvar_rtt)
USRSCTP_SYSCTL_DECL(sctp_rttvar_eqret)
USRSCTP_SYSCTL_DECL(sctp_steady_step)
USRSCTP_SYSCTL_DECL(sctp_use_dccc_ecn)
USRSCTP_SYSCTL_DECL(sctp_buffer_splitting)
USRSCTP_SYSCTL_DECL(sctp_initial_cwnd)
USRSCTP_SYSCTL_DECL(sctp_ootb_with_zero_cksum)
#ifdef SCTP_DEBUG
USRSCTP_SYSCTL_DECL(sctp_debug_on)
/* More specific values can be found in sctp_constants, but
 * are not considered to be part of the API.
 */
#define SCTP_DEBUG_NONE 0x00000000
#define SCTP_DEBUG_ALL  0xffffffff
#endif
#undef USRSCTP_SYSCTL_DECL
struct sctp_timeval {
	uint32_t tv_sec;
	uint32_t tv_usec;
};

struct sctpstat {
	struct sctp_timeval sctps_discontinuitytime; /* sctpStats 18 (TimeStamp) */
	/* MIB according to RFC 3873 */
	uint32_t  sctps_currestab;           /* sctpStats  1   (Gauge32) */
	uint32_t  sctps_activeestab;         /* sctpStats  2 (Counter32) */
	uint32_t  sctps_restartestab;
	uint32_t  sctps_collisionestab;
	uint32_t  sctps_passiveestab;        /* sctpStats  3 (Counter32) */
	uint32_t  sctps_aborted;             /* sctpStats  4 (Counter32) */
	uint32_t  sctps_shutdown;            /* sctpStats  5 (Counter32) */
	uint32_t  sctps_outoftheblue;        /* sctpStats  6 (Counter32) */
	uint32_t  sctps_checksumerrors;      /* sctpStats  7 (Counter32) */
	uint32_t  sctps_outcontrolchunks;    /* sctpStats  8 (Counter64) */
	uint32_t  sctps_outorderchunks;      /* sctpStats  9 (Counter64) */
	uint32_t  sctps_outunorderchunks;    /* sctpStats 10 (Counter64) */
	uint32_t  sctps_incontrolchunks;     /* sctpStats 11 (Counter64) */
	uint32_t  sctps_inorderchunks;       /* sctpStats 12 (Counter64) */
	uint32_t  sctps_inunorderchunks;     /* sctpStats 13 (Counter64) */
	uint32_t  sctps_fragusrmsgs;         /* sctpStats 14 (Counter64) */
	uint32_t  sctps_reasmusrmsgs;        /* sctpStats 15 (Counter64) */
	uint32_t  sctps_outpackets;          /* sctpStats 16 (Counter64) */
	uint32_t  sctps_inpackets;           /* sctpStats 17 (Counter64) */

	/* input statistics: */
	uint32_t  sctps_recvpackets;         /* total input packets        */
	uint32_t  sctps_recvdatagrams;       /* total input datagrams      */
	uint32_t  sctps_recvpktwithdata;     /* total packets that had data */
	uint32_t  sctps_recvsacks;           /* total input SACK chunks    */
	uint32_t  sctps_recvdata;            /* total input DATA chunks    */
	uint32_t  sctps_recvdupdata;         /* total input duplicate DATA chunks */
	uint32_t  sctps_recvheartbeat;       /* total input HB chunks      */
	uint32_t  sctps_recvheartbeatack;    /* total input HB-ACK chunks  */
	uint32_t  sctps_recvecne;            /* total input ECNE chunks    */
	uint32_t  sctps_recvauth;            /* total input AUTH chunks    */
	uint32_t  sctps_recvauthmissing;     /* total input chunks missing AUTH */
	uint32_t  sctps_recvivalhmacid;      /* total number of invalid HMAC ids received */
	uint32_t  sctps_recvivalkeyid;       /* total number of invalid secret ids received */
	uint32_t  sctps_recvauthfailed;      /* total number of auth failed */
	uint32_t  sctps_recvexpress;         /* total fast path receives all one chunk */
	uint32_t  sctps_recvexpressm;        /* total fast path multi-part data */
	uint32_t  sctps_recv_spare;          /* formerly sctps_recvnocrc */
	uint32_t  sctps_recvswcrc;
	uint32_t  sctps_recvhwcrc;

	/* output statistics: */
	uint32_t  sctps_sendpackets;         /* total output packets       */
	uint32_t  sctps_sendsacks;           /* total output SACKs         */
	uint32_t  sctps_senddata;            /* total output DATA chunks   */
	uint32_t  sctps_sendretransdata;     /* total output retransmitted DATA chunks */
	uint32_t  sctps_sendfastretrans;     /* total output fast retransmitted DATA chunks */
	uint32_t  sctps_sendmultfastretrans; /* total FR's that happened more than once
	                                      * to same chunk (u-del multi-fr algo).
	                                      */
	uint32_t  sctps_sendheartbeat;       /* total output HB chunks     */
	uint32_t  sctps_sendecne;            /* total output ECNE chunks    */
	uint32_t  sctps_sendauth;            /* total output AUTH chunks FIXME   */
	uint32_t  sctps_senderrors;          /* ip_output error counter */
	uint32_t  sctps_send_spare;          /* formerly sctps_sendnocrc */
	uint32_t  sctps_sendswcrc;
	uint32_t  sctps_sendhwcrc;
	/* PCKDROPREP statistics: */
	uint32_t  sctps_pdrpfmbox;           /* Packet drop from middle box */
	uint32_t  sctps_pdrpfehos;           /* P-drop from end host */
	uint32_t  sctps_pdrpmbda;            /* P-drops with data */
	uint32_t  sctps_pdrpmbct;            /* P-drops, non-data, non-endhost */
	uint32_t  sctps_pdrpbwrpt;           /* P-drop, non-endhost, bandwidth rep only */
	uint32_t  sctps_pdrpcrupt;           /* P-drop, not enough for chunk header */
	uint32_t  sctps_pdrpnedat;           /* P-drop, not enough data to confirm */
	uint32_t  sctps_pdrppdbrk;           /* P-drop, where process_chunk_drop said break */
	uint32_t  sctps_pdrptsnnf;           /* P-drop, could not find TSN */
	uint32_t  sctps_pdrpdnfnd;           /* P-drop, attempt reverse TSN lookup */
	uint32_t  sctps_pdrpdiwnp;           /* P-drop, e-host confirms zero-rwnd */
	uint32_t  sctps_pdrpdizrw;           /* P-drop, midbox confirms no space */
	uint32_t  sctps_pdrpbadd;            /* P-drop, data did not match TSN */
	uint32_t  sctps_pdrpmark;            /* P-drop, TSN's marked for Fast Retran */
	/* timeouts */
	uint32_t  sctps_timoiterator;        /* Number of iterator timers that fired */
	uint32_t  sctps_timodata;            /* Number of T3 data time outs */
	uint32_t  sctps_timowindowprobe;     /* Number of window probe (T3) timers that fired */
	uint32_t  sctps_timoinit;            /* Number of INIT timers that fired */
	uint32_t  sctps_timosack;            /* Number of sack timers that fired */
	uint32_t  sctps_timoshutdown;        /* Number of shutdown timers that fired */
	uint32_t  sctps_timoheartbeat;       /* Number of heartbeat timers that fired */
	uint32_t  sctps_timocookie;          /* Number of times a cookie timeout fired */
	uint32_t  sctps_timosecret;          /* Number of times an endpoint changed its cookie secret*/
	uint32_t  sctps_timopathmtu;         /* Number of PMTU timers that fired */
	uint32_t  sctps_timoshutdownack;     /* Number of shutdown ack timers that fired */
	uint32_t  sctps_timoshutdownguard;   /* Number of shutdown guard timers that fired */
	uint32_t  sctps_timostrmrst;         /* Number of stream reset timers that fired */
	uint32_t  sctps_timoearlyfr;         /* Number of early FR timers that fired */
	uint32_t  sctps_timoasconf;          /* Number of times an asconf timer fired */
	uint32_t  sctps_timodelprim;	     /* Number of times a prim_deleted timer fired */
	uint32_t  sctps_timoautoclose;       /* Number of times auto close timer fired */
	uint32_t  sctps_timoassockill;       /* Number of asoc free timers expired */
	uint32_t  sctps_timoinpkill;         /* Number of inp free timers expired */
	/* former early FR counters */
	uint32_t  sctps_spare[11];
	/* others */
	uint32_t  sctps_hdrops;              /* packet shorter than header */
	uint32_t  sctps_badsum;              /* checksum error             */
	uint32_t  sctps_noport;              /* no endpoint for port       */
	uint32_t  sctps_badvtag;             /* bad v-tag                  */
	uint32_t  sctps_badsid;              /* bad SID                    */
	uint32_t  sctps_nomem;               /* no memory                  */
	uint32_t  sctps_fastretransinrtt;    /* number of multiple FR in a RTT window */
	uint32_t  sctps_markedretrans;
	uint32_t  sctps_naglesent;           /* nagle allowed sending      */
	uint32_t  sctps_naglequeued;         /* nagle doesn't allow sending */
	uint32_t  sctps_maxburstqueued;      /* max burst doesn't allow sending */
	uint32_t  sctps_ifnomemqueued;       /* look ahead tells us no memory in
	                                      * interface ring buffer OR we had a
	                                      * send error and are queuing one send.
	                                      */
	uint32_t  sctps_windowprobed;        /* total number of window probes sent */
	uint32_t  sctps_lowlevelerr;         /* total times an output error causes us
	                                      * to clamp down on next user send.
	                                      */
	uint32_t  sctps_lowlevelerrusr;      /* total times sctp_senderrors were caused from
	                                      * a user send from a user invoked send not
	                                      * a sack response
	                                      */
	uint32_t  sctps_datadropchklmt;      /* Number of in data drops due to chunk limit reached */
	uint32_t  sctps_datadroprwnd;        /* Number of in data drops due to rwnd limit reached */
	uint32_t  sctps_ecnereducedcwnd;     /* Number of times a ECN reduced the cwnd */
	uint32_t  sctps_vtagexpress;         /* Used express lookup via vtag */
	uint32_t  sctps_vtagbogus;           /* Collision in express lookup. */
	uint32_t  sctps_primary_randry;      /* Number of times the sender ran dry of user data on primary */
	uint32_t  sctps_cmt_randry;          /* Same for above */
	uint32_t  sctps_slowpath_sack;       /* Sacks the slow way */
	uint32_t  sctps_wu_sacks_sent;       /* Window Update only sacks sent */
	uint32_t  sctps_sends_with_flags;    /* number of sends with sinfo_flags !=0 */
	uint32_t  sctps_sends_with_unord;    /* number of unordered sends */
	uint32_t  sctps_sends_with_eof;      /* number of sends with EOF flag set */
	uint32_t  sctps_sends_with_abort;    /* number of sends with ABORT flag set */
	uint32_t  sctps_protocol_drain_calls;/* number of times protocol drain called */
	uint32_t  sctps_protocol_drains_done;/* number of times we did a protocol drain */
	uint32_t  sctps_read_peeks;          /* Number of times recv was called with peek */
	uint32_t  sctps_cached_chk;          /* Number of cached chunks used */
	uint32_t  sctps_cached_strmoq;       /* Number of cached stream oq's used */
	uint32_t  sctps_left_abandon;        /* Number of unread messages abandoned by close */
	uint32_t  sctps_send_burst_avoid;    /* Unused */
	uint32_t  sctps_send_cwnd_avoid;     /* Send cwnd full  avoidance, already max burst inflight to net */
	uint32_t  sctps_fwdtsn_map_over;     /* number of map array over-runs via fwd-tsn's */
	uint32_t  sctps_queue_upd_ecne;      /* Number of times we queued or updated an ECN chunk on send queue */
	uint32_t  sctps_recvzerocrc;         /* Number of accepted packets with zero CRC */
	uint32_t  sctps_sendzerocrc;         /* Number of packets sent with zero CRC */
	uint32_t  sctps_reserved[29];        /* Future ABI compat - remove int's from here when adding new */
};

void
usrsctp_get_stat(struct sctpstat *);

#ifdef _WIN32
#ifdef _MSC_VER
#pragma warning(default: 4200)
#endif
#endif
#ifdef  __cplusplus
}
#endif
#endif