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      1 /*-
      2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
      3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
      4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions are met:
      8  *
      9  * a) Redistributions of source code must retain the above copyright notice,
     10  *    this list of conditions and the following disclaimer.
     11  *
     12  * b) Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in
     14  *    the documentation and/or other materials provided with the distribution.
     15  *
     16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
     17  *    contributors may be used to endorse or promote products derived
     18  *    from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     30  * THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifdef __FreeBSD__
     34 #include <sys/cdefs.h>
     35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_uio.h 255160 2013-09-02 22:48:41Z tuexen $");
     36 #endif
     37 
     38 #ifndef _NETINET_SCTP_UIO_H_
     39 #define _NETINET_SCTP_UIO_H_
     40 
     41 #if (defined(__APPLE__) && defined(KERNEL))
     42 #ifndef _KERNEL
     43 #define _KERNEL
     44 #endif
     45 #endif
     46 
     47 #if !(defined(__Windows__)) && !defined(__Userspace_os_Windows)
     48 #if ! defined(_KERNEL)
     49 #include <stdint.h>
     50 #endif
     51 #include <sys/types.h>
     52 #include <sys/socket.h>
     53 #include <netinet/in.h>
     54 #endif
     55 #if defined(__Windows__)
     56 #pragma warning(push)
     57 #pragma warning(disable: 4200)
     58 #if defined(_KERNEL)
     59 #include <sys/types.h>
     60 #include <sys/socket.h>
     61 #include <netinet/in.h>
     62 #endif
     63 #endif
     64 
     65 typedef uint32_t sctp_assoc_t;
     66 
     67 #define SCTP_FUTURE_ASSOC  0
     68 #define SCTP_CURRENT_ASSOC 1
     69 #define SCTP_ALL_ASSOC     2
     70 
     71 struct sctp_event {
     72 	sctp_assoc_t se_assoc_id;
     73 	uint16_t     se_type;
     74 	uint8_t      se_on;
     75 };
     76 
     77 /* Compatibility to previous define's */
     78 #define sctp_stream_reset_events sctp_stream_reset_event
     79 
     80 /* On/Off setup for subscription to events */
     81 struct sctp_event_subscribe {
     82 	uint8_t sctp_data_io_event;
     83 	uint8_t sctp_association_event;
     84 	uint8_t sctp_address_event;
     85 	uint8_t sctp_send_failure_event;
     86 	uint8_t sctp_peer_error_event;
     87 	uint8_t sctp_shutdown_event;
     88 	uint8_t sctp_partial_delivery_event;
     89 	uint8_t sctp_adaptation_layer_event;
     90 	uint8_t sctp_authentication_event;
     91 	uint8_t sctp_sender_dry_event;
     92 	uint8_t sctp_stream_reset_event;
     93 };
     94 
     95 /* ancillary data types */
     96 #define SCTP_INIT	0x0001
     97 #define SCTP_SNDRCV	0x0002
     98 #define SCTP_EXTRCV	0x0003
     99 #define SCTP_SNDINFO    0x0004
    100 #define SCTP_RCVINFO    0x0005
    101 #define SCTP_NXTINFO    0x0006
    102 #define SCTP_PRINFO     0x0007
    103 #define SCTP_AUTHINFO   0x0008
    104 #define SCTP_DSTADDRV4  0x0009
    105 #define SCTP_DSTADDRV6  0x000a
    106 
    107 /*
    108  * ancillary data structures
    109  */
    110 struct sctp_initmsg {
    111 #if defined(__FreeBSD__) && __FreeBSD_version < 800000
    112 	/* This is a bug. Not fixed for ABI compatibility */
    113 	uint32_t sinit_num_ostreams;
    114 	uint32_t sinit_max_instreams;
    115 #else
    116 	uint16_t sinit_num_ostreams;
    117 	uint16_t sinit_max_instreams;
    118 #endif
    119 	uint16_t sinit_max_attempts;
    120 	uint16_t sinit_max_init_timeo;
    121 };
    122 
    123 /* We add 96 bytes to the size of sctp_sndrcvinfo.
    124  * This makes the current structure 128 bytes long
    125  * which is nicely 64 bit aligned but also has room
    126  * for us to add more and keep ABI compatibility.
    127  * For example, already we have the sctp_extrcvinfo
    128  * when enabled which is 48 bytes.
    129  */
    130 
    131 /*
    132  * The assoc up needs a verfid
    133  * all sendrcvinfo's need a verfid for SENDING only.
    134  */
    135 
    136 
    137 #define SCTP_ALIGN_RESV_PAD 92
    138 #define SCTP_ALIGN_RESV_PAD_SHORT 76
    139 
    140 struct sctp_sndrcvinfo {
    141 	uint16_t sinfo_stream;
    142 	uint16_t sinfo_ssn;
    143 	uint16_t sinfo_flags;
    144 #if defined(__FreeBSD__) && __FreeBSD_version < 800000
    145 	uint16_t sinfo_pr_policy;
    146 #endif
    147 	uint32_t sinfo_ppid;
    148 	uint32_t sinfo_context;
    149 	uint32_t sinfo_timetolive;
    150 	uint32_t sinfo_tsn;
    151 	uint32_t sinfo_cumtsn;
    152 	sctp_assoc_t sinfo_assoc_id;
    153 	uint16_t sinfo_keynumber;
    154 	uint16_t sinfo_keynumber_valid;
    155 	uint8_t  __reserve_pad[SCTP_ALIGN_RESV_PAD];
    156 };
    157 
    158 struct sctp_extrcvinfo {
    159 	uint16_t sinfo_stream;
    160 	uint16_t sinfo_ssn;
    161 	uint16_t sinfo_flags;
    162 #if defined(__FreeBSD__) && __FreeBSD_version < 800000
    163 	uint16_t sinfo_pr_policy;
    164 #endif
    165 	uint32_t sinfo_ppid;
    166 	uint32_t sinfo_context;
    167 	uint32_t sinfo_timetolive;
    168 	uint32_t sinfo_tsn;
    169 	uint32_t sinfo_cumtsn;
    170 	sctp_assoc_t sinfo_assoc_id;
    171 	uint16_t sreinfo_next_flags;
    172 	uint16_t sreinfo_next_stream;
    173 	uint32_t sreinfo_next_aid;
    174 	uint32_t sreinfo_next_length;
    175 	uint32_t sreinfo_next_ppid;
    176 	uint16_t sinfo_keynumber;
    177 	uint16_t sinfo_keynumber_valid;
    178 	uint8_t  __reserve_pad[SCTP_ALIGN_RESV_PAD_SHORT];
    179 };
    180 
    181 struct sctp_sndinfo {
    182 	uint16_t snd_sid;
    183 	uint16_t snd_flags;
    184 	uint32_t snd_ppid;
    185 	uint32_t snd_context;
    186 	sctp_assoc_t snd_assoc_id;
    187 };
    188 
    189 struct sctp_prinfo {
    190 	uint16_t pr_policy;
    191 	uint32_t pr_value;
    192 };
    193 
    194 struct sctp_default_prinfo {
    195 	uint16_t pr_policy;
    196 	uint32_t pr_value;
    197 	sctp_assoc_t pr_assoc_id;
    198 };
    199 
    200 struct sctp_authinfo {
    201 	uint16_t auth_keynumber;
    202 };
    203 
    204 struct sctp_rcvinfo {
    205 	uint16_t rcv_sid;
    206 	uint16_t rcv_ssn;
    207 	uint16_t rcv_flags;
    208 	uint32_t rcv_ppid;
    209 	uint32_t rcv_tsn;
    210 	uint32_t rcv_cumtsn;
    211 	uint32_t rcv_context;
    212 	sctp_assoc_t rcv_assoc_id;
    213 };
    214 
    215 struct sctp_nxtinfo {
    216 	uint16_t nxt_sid;
    217 	uint16_t nxt_flags;
    218 	uint32_t nxt_ppid;
    219 	uint32_t nxt_length;
    220 	sctp_assoc_t nxt_assoc_id;
    221 };
    222 
    223 #define SCTP_NO_NEXT_MSG           0x0000
    224 #define SCTP_NEXT_MSG_AVAIL        0x0001
    225 #define SCTP_NEXT_MSG_ISCOMPLETE   0x0002
    226 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
    227 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
    228 
    229 struct sctp_recvv_rn {
    230 	struct sctp_rcvinfo recvv_rcvinfo;
    231 	struct sctp_nxtinfo recvv_nxtinfo;
    232 };
    233 
    234 #define SCTP_RECVV_NOINFO  0
    235 #define SCTP_RECVV_RCVINFO 1
    236 #define SCTP_RECVV_NXTINFO 2
    237 #define SCTP_RECVV_RN      3
    238 
    239 #define SCTP_SENDV_NOINFO   0
    240 #define SCTP_SENDV_SNDINFO  1
    241 #define SCTP_SENDV_PRINFO   2
    242 #define SCTP_SENDV_AUTHINFO 3
    243 #define SCTP_SENDV_SPA      4
    244 
    245 struct sctp_sendv_spa {
    246 	uint32_t sendv_flags;
    247 	struct sctp_sndinfo sendv_sndinfo;
    248 	struct sctp_prinfo sendv_prinfo;
    249 	struct sctp_authinfo sendv_authinfo;
    250 };
    251 
    252 #define SCTP_SEND_SNDINFO_VALID  0x00000001
    253 #define SCTP_SEND_PRINFO_VALID   0x00000002
    254 #define SCTP_SEND_AUTHINFO_VALID 0x00000004
    255 
    256 struct sctp_snd_all_completes {
    257 	uint16_t sall_stream;
    258 	uint16_t sall_flags;
    259 	uint32_t sall_ppid;
    260 	uint32_t sall_context;
    261 	uint32_t sall_num_sent;
    262 	uint32_t sall_num_failed;
    263 };
    264 
    265 /* Flags that go into the sinfo->sinfo_flags field */
    266 #define SCTP_NOTIFICATION     0x0010 /* next message is a notification */
    267 #define SCTP_COMPLETE         0x0020 /* next message is complete */
    268 #define SCTP_EOF              0x0100 /* Start shutdown procedures */
    269 #define SCTP_ABORT            0x0200 /* Send an ABORT to peer */
    270 #define SCTP_UNORDERED        0x0400 /* Message is un-ordered */
    271 #define SCTP_ADDR_OVER        0x0800 /* Override the primary-address */
    272 #define SCTP_SENDALL          0x1000 /* Send this on all associations */
    273 #define SCTP_EOR              0x2000 /* end of message signal */
    274 #define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */
    275 
    276 #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
    277                                     & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
    278 				        SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
    279 					SCTP_SACK_IMMEDIATELY)) != 0)
    280 /* for the endpoint */
    281 
    282 /* The lower byte is an enumeration of PR-SCTP policies */
    283 #define SCTP_PR_SCTP_NONE 0x0000 /* Reliable transfer */
    284 #define SCTP_PR_SCTP_TTL  0x0001 /* Time based PR-SCTP */
    285 #define SCTP_PR_SCTP_BUF  0x0002 /* Buffer based PR-SCTP */
    286 #define SCTP_PR_SCTP_RTX  0x0003 /* Number of retransmissions based PR-SCTP */
    287 
    288 #define PR_SCTP_POLICY(x)         ((x) & 0x0f)
    289 #define PR_SCTP_ENABLED(x)        (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE)
    290 #define PR_SCTP_TTL_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
    291 #define PR_SCTP_BUF_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
    292 #define PR_SCTP_RTX_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
    293 #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_RTX)
    294 /* Stat's */
    295 struct sctp_pcbinfo {
    296 	uint32_t ep_count;
    297 	uint32_t asoc_count;
    298 	uint32_t laddr_count;
    299 	uint32_t raddr_count;
    300 	uint32_t chk_count;
    301 	uint32_t readq_count;
    302 	uint32_t free_chunks;
    303 	uint32_t stream_oque;
    304 };
    305 
    306 struct sctp_sockstat {
    307 	sctp_assoc_t ss_assoc_id;
    308 	uint32_t ss_total_sndbuf;
    309 	uint32_t ss_total_recv_buf;
    310 };
    311 
    312 /*
    313  * notification event structures
    314  */
    315 
    316 /*
    317  * association change event
    318  */
    319 struct sctp_assoc_change {
    320 	uint16_t sac_type;
    321 	uint16_t sac_flags;
    322 	uint32_t sac_length;
    323 	uint16_t sac_state;
    324 	uint16_t sac_error;
    325 	uint16_t sac_outbound_streams;
    326 	uint16_t sac_inbound_streams;
    327 	sctp_assoc_t sac_assoc_id;
    328 	uint8_t sac_info[];
    329 };
    330 
    331 /* sac_state values */
    332 #define SCTP_COMM_UP            0x0001
    333 #define SCTP_COMM_LOST          0x0002
    334 #define SCTP_RESTART            0x0003
    335 #define SCTP_SHUTDOWN_COMP      0x0004
    336 #define SCTP_CANT_STR_ASSOC     0x0005
    337 
    338 /* sac_info values */
    339 #define SCTP_ASSOC_SUPPORTS_PR        0x01
    340 #define SCTP_ASSOC_SUPPORTS_AUTH      0x02
    341 #define SCTP_ASSOC_SUPPORTS_ASCONF    0x03
    342 #define SCTP_ASSOC_SUPPORTS_MULTIBUF  0x04
    343 #define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05
    344 #define SCTP_ASSOC_SUPPORTS_MAX       0x05
    345 /*
    346  * Address event
    347  */
    348 struct sctp_paddr_change {
    349 	uint16_t spc_type;
    350 	uint16_t spc_flags;
    351 	uint32_t spc_length;
    352 	struct sockaddr_storage spc_aaddr;
    353 	uint32_t spc_state;
    354 	uint32_t spc_error;
    355 	sctp_assoc_t spc_assoc_id;
    356 	uint8_t spc_padding[4];
    357 };
    358 
    359 /* paddr state values */
    360 #define SCTP_ADDR_AVAILABLE	0x0001
    361 #define SCTP_ADDR_UNREACHABLE	0x0002
    362 #define SCTP_ADDR_REMOVED	0x0003
    363 #define SCTP_ADDR_ADDED		0x0004
    364 #define SCTP_ADDR_MADE_PRIM	0x0005
    365 #define SCTP_ADDR_CONFIRMED	0x0006
    366 
    367 #define SCTP_ACTIVE		0x0001	/* SCTP_ADDR_REACHABLE */
    368 #define SCTP_INACTIVE		0x0002	/* neither SCTP_ADDR_REACHABLE
    369 					   nor SCTP_ADDR_UNCONFIRMED */
    370 #define SCTP_UNCONFIRMED	0x0200	/* SCTP_ADDR_UNCONFIRMED */
    371 
    372 /* remote error events */
    373 struct sctp_remote_error {
    374 	uint16_t sre_type;
    375 	uint16_t sre_flags;
    376 	uint32_t sre_length;
    377 	uint16_t sre_error;
    378 	sctp_assoc_t sre_assoc_id;
    379 	uint8_t sre_data[4];
    380 };
    381 
    382 /* data send failure event (deprecated) */
    383 struct sctp_send_failed {
    384 	uint16_t ssf_type;
    385 	uint16_t ssf_flags;
    386 	uint32_t ssf_length;
    387 	uint32_t ssf_error;
    388 	struct sctp_sndrcvinfo ssf_info;
    389 	sctp_assoc_t ssf_assoc_id;
    390 	uint8_t ssf_data[];
    391 };
    392 
    393 /* data send failure event (not deprecated) */
    394 struct sctp_send_failed_event {
    395 	uint16_t ssfe_type;
    396 	uint16_t ssfe_flags;
    397 	uint32_t ssfe_length;
    398 	uint32_t ssfe_error;
    399 	struct sctp_sndinfo ssfe_info;
    400 	sctp_assoc_t ssfe_assoc_id;
    401 	uint8_t  ssfe_data[];
    402 };
    403 
    404 /* flag that indicates state of data */
    405 #define SCTP_DATA_UNSENT	0x0001	/* inqueue never on wire */
    406 #define SCTP_DATA_SENT		0x0002	/* on wire at failure */
    407 
    408 /* shutdown event */
    409 struct sctp_shutdown_event {
    410 	uint16_t sse_type;
    411 	uint16_t sse_flags;
    412 	uint32_t sse_length;
    413 	sctp_assoc_t sse_assoc_id;
    414 };
    415 
    416 /* Adaptation layer indication stuff */
    417 struct sctp_adaptation_event {
    418 	uint16_t sai_type;
    419 	uint16_t sai_flags;
    420 	uint32_t sai_length;
    421 	uint32_t sai_adaptation_ind;
    422 	sctp_assoc_t sai_assoc_id;
    423 };
    424 
    425 struct sctp_setadaptation {
    426 	uint32_t ssb_adaptation_ind;
    427 };
    428 
    429 /* compatible old spelling */
    430 struct sctp_adaption_event {
    431 	uint16_t sai_type;
    432 	uint16_t sai_flags;
    433 	uint32_t sai_length;
    434 	uint32_t sai_adaption_ind;
    435 	sctp_assoc_t sai_assoc_id;
    436 };
    437 
    438 struct sctp_setadaption {
    439 	uint32_t ssb_adaption_ind;
    440 };
    441 
    442 
    443 /*
    444  * Partial Delivery API event
    445  */
    446 struct sctp_pdapi_event {
    447 	uint16_t pdapi_type;
    448 	uint16_t pdapi_flags;
    449 	uint32_t pdapi_length;
    450 	uint32_t pdapi_indication;
    451 	uint16_t pdapi_stream;
    452 	uint16_t pdapi_seq;
    453 	sctp_assoc_t pdapi_assoc_id;
    454 };
    455 
    456 /* indication values */
    457 #define SCTP_PARTIAL_DELIVERY_ABORTED	0x0001
    458 
    459 
    460 /*
    461  * authentication key event
    462  */
    463 struct sctp_authkey_event {
    464 	uint16_t auth_type;
    465 	uint16_t auth_flags;
    466 	uint32_t auth_length;
    467 	uint16_t auth_keynumber;
    468 	uint16_t auth_altkeynumber;
    469 	uint32_t auth_indication;
    470 	sctp_assoc_t auth_assoc_id;
    471 };
    472 
    473 /* indication values */
    474 #define SCTP_AUTH_NEW_KEY	0x0001
    475 #define SCTP_AUTH_NEWKEY	SCTP_AUTH_NEW_KEY
    476 #define SCTP_AUTH_NO_AUTH	0x0002
    477 #define SCTP_AUTH_FREE_KEY	0x0003
    478 
    479 
    480 struct sctp_sender_dry_event {
    481 	uint16_t sender_dry_type;
    482 	uint16_t sender_dry_flags;
    483 	uint32_t sender_dry_length;
    484 	sctp_assoc_t sender_dry_assoc_id;
    485 };
    486 
    487 
    488 /*
    489  * Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT
    490  */
    491 struct sctp_stream_reset_event {
    492 	uint16_t strreset_type;
    493 	uint16_t strreset_flags;
    494 	uint32_t strreset_length;
    495 	sctp_assoc_t strreset_assoc_id;
    496 	uint16_t strreset_stream_list[];
    497 };
    498 
    499 /* flags in stream_reset_event (strreset_flags) */
    500 #define SCTP_STREAM_RESET_INCOMING_SSN  0x0001
    501 #define SCTP_STREAM_RESET_OUTGOING_SSN  0x0002
    502 #define SCTP_STREAM_RESET_DENIED        0x0004
    503 #define SCTP_STREAM_RESET_FAILED        0x0008
    504 
    505 /*
    506  * Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT
    507  */
    508 struct sctp_assoc_reset_event {
    509 	uint16_t 	assocreset_type;
    510 	uint16_t	assocreset_flags;
    511 	uint32_t	assocreset_length;
    512 	sctp_assoc_t	assocreset_assoc_id;
    513 	uint32_t	assocreset_local_tsn;
    514 	uint32_t	assocreset_remote_tsn;
    515 };
    516 
    517 #define SCTP_ASSOC_RESET_DENIED		0x0004
    518 #define SCTP_ASSOC_RESET_FAILED		0x0008
    519 
    520 /*
    521  * Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT
    522  */
    523 struct sctp_stream_change_event {
    524 	uint16_t	strchange_type;
    525 	uint16_t	strchange_flags;
    526 	uint32_t	strchange_length;
    527 	sctp_assoc_t	strchange_assoc_id;
    528 	uint16_t	strchange_instrms;
    529 	uint16_t	strchange_outstrms;
    530 };
    531 
    532 #define SCTP_STREAM_CHANGE_DENIED	0x0004
    533 #define SCTP_STREAM_CHANGE_FAILED	0x0008
    534 
    535 
    536 /* SCTP notification event */
    537 struct sctp_tlv {
    538 	uint16_t sn_type;
    539 	uint16_t sn_flags;
    540 	uint32_t sn_length;
    541 };
    542 
    543 union sctp_notification {
    544 	struct sctp_tlv sn_header;
    545 	struct sctp_assoc_change sn_assoc_change;
    546 	struct sctp_paddr_change sn_paddr_change;
    547 	struct sctp_remote_error sn_remote_error;
    548 	struct sctp_send_failed sn_send_failed;
    549 	struct sctp_shutdown_event sn_shutdown_event;
    550 	struct sctp_adaptation_event sn_adaptation_event;
    551 	/* compatibility same as above */
    552 	struct sctp_adaption_event sn_adaption_event;
    553 	struct sctp_pdapi_event sn_pdapi_event;
    554 	struct sctp_authkey_event sn_auth_event;
    555 	struct sctp_sender_dry_event sn_sender_dry_event;
    556 	struct sctp_send_failed_event sn_send_failed_event;
    557 	struct sctp_stream_reset_event sn_strreset_event;
    558 	struct sctp_assoc_reset_event  sn_assocreset_event;
    559 	struct sctp_stream_change_event sn_strchange_event;
    560 };
    561 
    562 /* notification types */
    563 #define SCTP_ASSOC_CHANGE                       0x0001
    564 #define SCTP_PEER_ADDR_CHANGE                   0x0002
    565 #define SCTP_REMOTE_ERROR                       0x0003
    566 #define SCTP_SEND_FAILED                        0x0004
    567 #define SCTP_SHUTDOWN_EVENT                     0x0005
    568 #define SCTP_ADAPTATION_INDICATION              0x0006
    569 /* same as above */
    570 #define SCTP_ADAPTION_INDICATION                0x0006
    571 #define SCTP_PARTIAL_DELIVERY_EVENT             0x0007
    572 #define SCTP_AUTHENTICATION_EVENT               0x0008
    573 #define SCTP_STREAM_RESET_EVENT                 0x0009
    574 #define SCTP_SENDER_DRY_EVENT                   0x000a
    575 #define SCTP_NOTIFICATIONS_STOPPED_EVENT        0x000b /* we don't send this*/
    576 #define SCTP_ASSOC_RESET_EVENT                  0x000c
    577 #define SCTP_STREAM_CHANGE_EVENT                0x000d
    578 #define SCTP_SEND_FAILED_EVENT                  0x000e
    579 /*
    580  * socket option structs
    581  */
    582 
    583 struct sctp_paddrparams {
    584 	struct sockaddr_storage spp_address;
    585 	sctp_assoc_t spp_assoc_id;
    586 	uint32_t spp_hbinterval;
    587 	uint32_t spp_pathmtu;
    588 	uint32_t spp_flags;
    589 	uint32_t spp_ipv6_flowlabel;
    590 	uint16_t spp_pathmaxrxt;
    591 	uint8_t spp_dscp;
    592 };
    593 #define spp_ipv4_tos spp_dscp
    594 
    595 #define SPP_HB_ENABLE		0x00000001
    596 #define SPP_HB_DISABLE		0x00000002
    597 #define SPP_HB_DEMAND		0x00000004
    598 #define SPP_PMTUD_ENABLE	0x00000008
    599 #define SPP_PMTUD_DISABLE	0x00000010
    600 #define SPP_HB_TIME_IS_ZERO     0x00000080
    601 #define SPP_IPV6_FLOWLABEL      0x00000100
    602 #define SPP_DSCP                0x00000200
    603 #define SPP_IPV4_TOS            SPP_DSCP
    604 
    605 struct sctp_paddrthlds {
    606 	struct sockaddr_storage spt_address;
    607 	sctp_assoc_t spt_assoc_id;
    608 	uint16_t spt_pathmaxrxt;
    609 	uint16_t spt_pathpfthld;
    610 };
    611 
    612 struct sctp_paddrinfo {
    613 	struct sockaddr_storage spinfo_address;
    614 	sctp_assoc_t spinfo_assoc_id;
    615 	int32_t spinfo_state;
    616 	uint32_t spinfo_cwnd;
    617 	uint32_t spinfo_srtt;
    618 	uint32_t spinfo_rto;
    619 	uint32_t spinfo_mtu;
    620 };
    621 
    622 struct sctp_rtoinfo {
    623 	sctp_assoc_t srto_assoc_id;
    624 	uint32_t srto_initial;
    625 	uint32_t srto_max;
    626 	uint32_t srto_min;
    627 };
    628 
    629 struct sctp_assocparams {
    630 	sctp_assoc_t sasoc_assoc_id;
    631 	uint32_t sasoc_peer_rwnd;
    632 	uint32_t sasoc_local_rwnd;
    633 	uint32_t sasoc_cookie_life;
    634 	uint16_t sasoc_asocmaxrxt;
    635 	uint16_t sasoc_number_peer_destinations;
    636 };
    637 
    638 struct sctp_setprim {
    639 	struct sockaddr_storage ssp_addr;
    640 	sctp_assoc_t ssp_assoc_id;
    641 	uint8_t ssp_padding[4];
    642 };
    643 
    644 struct sctp_setpeerprim {
    645 	struct sockaddr_storage sspp_addr;
    646 	sctp_assoc_t sspp_assoc_id;
    647 	uint8_t sspp_padding[4];
    648 };
    649 
    650 struct sctp_getaddresses {
    651 	sctp_assoc_t sget_assoc_id;
    652 	/* addr is filled in for N * sockaddr_storage */
    653 	struct sockaddr addr[1];
    654 };
    655 
    656 struct sctp_status {
    657 	sctp_assoc_t sstat_assoc_id;
    658 	int32_t sstat_state;
    659 	uint32_t sstat_rwnd;
    660 	uint16_t sstat_unackdata;
    661 	uint16_t sstat_penddata;
    662 	uint16_t sstat_instrms;
    663 	uint16_t sstat_outstrms;
    664 	uint32_t sstat_fragmentation_point;
    665 	struct sctp_paddrinfo sstat_primary;
    666 };
    667 
    668 /*
    669  * AUTHENTICATION support
    670  */
    671 /* SCTP_AUTH_CHUNK */
    672 struct sctp_authchunk {
    673 	uint8_t sauth_chunk;
    674 };
    675 
    676 /* SCTP_AUTH_KEY */
    677 struct sctp_authkey {
    678 	sctp_assoc_t sca_assoc_id;
    679 	uint16_t sca_keynumber;
    680 	uint16_t sca_keylength;
    681 	uint8_t sca_key[];
    682 };
    683 
    684 /* SCTP_HMAC_IDENT */
    685 struct sctp_hmacalgo {
    686 	uint32_t shmac_number_of_idents;
    687 	uint16_t shmac_idents[];
    688 };
    689 
    690 /* AUTH hmac_id */
    691 #define SCTP_AUTH_HMAC_ID_RSVD		0x0000
    692 #define SCTP_AUTH_HMAC_ID_SHA1		0x0001	/* default, mandatory */
    693 #define SCTP_AUTH_HMAC_ID_SHA256	0x0003
    694 
    695 /* SCTP_AUTH_ACTIVE_KEY / SCTP_AUTH_DELETE_KEY */
    696 struct sctp_authkeyid {
    697 	sctp_assoc_t scact_assoc_id;
    698 	uint16_t scact_keynumber;
    699 };
    700 
    701 /* SCTP_PEER_AUTH_CHUNKS / SCTP_LOCAL_AUTH_CHUNKS */
    702 struct sctp_authchunks {
    703 	sctp_assoc_t gauth_assoc_id;
    704 	uint32_t gauth_number_of_chunks;
    705 	uint8_t gauth_chunks[];
    706 };
    707 
    708 struct sctp_assoc_value {
    709 	sctp_assoc_t assoc_id;
    710 	uint32_t assoc_value;
    711 };
    712 
    713 struct sctp_cc_option {
    714 	int option;
    715 	struct sctp_assoc_value aid_value;
    716 };
    717 
    718 struct sctp_stream_value {
    719 	sctp_assoc_t assoc_id;
    720 	uint16_t stream_id;
    721 	uint16_t stream_value;
    722 };
    723 
    724 struct sctp_assoc_ids {
    725 	uint32_t gaids_number_of_ids;
    726 	sctp_assoc_t gaids_assoc_id[];
    727 };
    728 
    729 struct sctp_sack_info {
    730 	sctp_assoc_t sack_assoc_id;
    731 	uint32_t sack_delay;
    732 	uint32_t sack_freq;
    733 };
    734 
    735 struct sctp_timeouts {
    736 	sctp_assoc_t stimo_assoc_id;
    737 	uint32_t stimo_init;
    738 	uint32_t stimo_data;
    739 	uint32_t stimo_sack;
    740 	uint32_t stimo_shutdown;
    741 	uint32_t stimo_heartbeat;
    742 	uint32_t stimo_cookie;
    743 	uint32_t stimo_shutdownack;
    744 };
    745 
    746 struct sctp_udpencaps {
    747 	struct sockaddr_storage sue_address;
    748 	sctp_assoc_t sue_assoc_id;
    749 	uint16_t sue_port;
    750 };
    751 
    752 struct sctp_cwnd_args {
    753 	struct sctp_nets *net;	/* network to */ /* FIXME: LP64 issue */
    754 	uint32_t cwnd_new_value;/* cwnd in k */
    755 	uint32_t pseudo_cumack;
    756 	uint16_t inflight;	/* flightsize in k */
    757 	uint16_t cwnd_augment;	/* increment to it */
    758 	uint8_t meets_pseudo_cumack;
    759 	uint8_t need_new_pseudo_cumack;
    760 	uint8_t cnt_in_send;
    761 	uint8_t cnt_in_str;
    762 };
    763 
    764 struct sctp_blk_args {
    765 	uint32_t onsb;		/* in 1k bytes */
    766 	uint32_t sndlen;	/* len of send being attempted */
    767 	uint32_t peer_rwnd;	/* rwnd of peer */
    768 	uint16_t send_sent_qcnt;/* chnk cnt */
    769 	uint16_t stream_qcnt;	/* chnk cnt */
    770 	uint16_t chunks_on_oque;/* chunks out */
    771 	uint16_t flight_size;   /* flight size in k */
    772 };
    773 
    774 /*
    775  * Max we can reset in one setting, note this is dictated not by the define
    776  * but the size of a mbuf cluster so don't change this define and think you
    777  * can specify more. You must do multiple resets if you want to reset more
    778  * than SCTP_MAX_EXPLICIT_STR_RESET.
    779  */
    780 #define SCTP_MAX_EXPLICT_STR_RESET   1000
    781 
    782 struct sctp_reset_streams {
    783 	sctp_assoc_t srs_assoc_id;
    784 	uint16_t srs_flags;
    785 	uint16_t srs_number_streams;	/* 0 == ALL */
    786 	uint16_t srs_stream_list[];/* list if strrst_num_streams is not 0 */
    787 };
    788 
    789 struct sctp_add_streams {
    790 	sctp_assoc_t	sas_assoc_id;
    791 	uint16_t	sas_instrms;
    792 	uint16_t	sas_outstrms;
    793 };
    794 
    795 struct sctp_get_nonce_values {
    796 	sctp_assoc_t gn_assoc_id;
    797 	uint32_t gn_peers_tag;
    798 	uint32_t gn_local_tag;
    799 };
    800 
    801 /* Debugging logs */
    802 struct sctp_str_log {
    803 	void *stcb; /* FIXME: LP64 issue */
    804 	uint32_t n_tsn;
    805 	uint32_t e_tsn;
    806 	uint16_t n_sseq;
    807 	uint16_t e_sseq;
    808 	uint16_t strm;
    809 };
    810 
    811 struct sctp_sb_log {
    812 	void  *stcb; /* FIXME: LP64 issue */
    813 	uint32_t so_sbcc;
    814 	uint32_t stcb_sbcc;
    815 	uint32_t incr;
    816 };
    817 
    818 struct sctp_fr_log {
    819 	uint32_t largest_tsn;
    820 	uint32_t largest_new_tsn;
    821 	uint32_t tsn;
    822 };
    823 
    824 struct sctp_fr_map {
    825 	uint32_t base;
    826 	uint32_t cum;
    827 	uint32_t high;
    828 };
    829 
    830 struct sctp_rwnd_log {
    831 	uint32_t rwnd;
    832 	uint32_t send_size;
    833 	uint32_t overhead;
    834 	uint32_t new_rwnd;
    835 };
    836 
    837 struct sctp_mbcnt_log {
    838 	uint32_t total_queue_size;
    839 	uint32_t size_change;
    840 	uint32_t total_queue_mb_size;
    841 	uint32_t mbcnt_change;
    842 };
    843 
    844 struct sctp_sack_log {
    845 	uint32_t cumack;
    846 	uint32_t oldcumack;
    847 	uint32_t tsn;
    848 	uint16_t numGaps;
    849 	uint16_t numDups;
    850 };
    851 
    852 struct sctp_lock_log {
    853 	void *sock;  /* FIXME: LP64 issue */
    854 	void *inp; /* FIXME: LP64 issue */
    855 	uint8_t tcb_lock;
    856 	uint8_t inp_lock;
    857 	uint8_t info_lock;
    858 	uint8_t sock_lock;
    859 	uint8_t sockrcvbuf_lock;
    860 	uint8_t socksndbuf_lock;
    861 	uint8_t create_lock;
    862 	uint8_t resv;
    863 };
    864 
    865 struct sctp_rto_log {
    866 	void * net; /* FIXME: LP64 issue */
    867 	uint32_t rtt;
    868 };
    869 
    870 struct sctp_nagle_log {
    871 	void  *stcb; /* FIXME: LP64 issue */
    872 	uint32_t total_flight;
    873 	uint32_t total_in_queue;
    874 	uint16_t count_in_queue;
    875 	uint16_t count_in_flight;
    876 };
    877 
    878 struct sctp_sbwake_log {
    879 	void *stcb; /* FIXME: LP64 issue */
    880 	uint16_t send_q;
    881 	uint16_t sent_q;
    882 	uint16_t flight;
    883 	uint16_t wake_cnt;
    884 	uint8_t stream_qcnt;	/* chnk cnt */
    885 	uint8_t chunks_on_oque;/* chunks out */
    886 	uint8_t sbflags;
    887 	uint8_t sctpflags;
    888 };
    889 
    890 struct sctp_misc_info {
    891 	uint32_t log1;
    892 	uint32_t log2;
    893 	uint32_t log3;
    894 	uint32_t log4;
    895 };
    896 
    897 struct sctp_log_closing {
    898 	void *inp; /* FIXME: LP64 issue */
    899 	void *stcb;  /* FIXME: LP64 issue */
    900 	uint32_t sctp_flags;
    901 	uint16_t  state;
    902 	int16_t  loc;
    903 };
    904 
    905 struct sctp_mbuf_log {
    906 	struct mbuf *mp; /* FIXME: LP64 issue */
    907 	caddr_t  ext;
    908 	caddr_t  data;
    909 	uint16_t size;
    910 	uint8_t  refcnt;
    911 	uint8_t  mbuf_flags;
    912 };
    913 
    914 struct sctp_cwnd_log {
    915 	uint64_t time_event;
    916 	uint8_t  from;
    917 	uint8_t  event_type;
    918 	uint8_t  resv[2];
    919 	union {
    920 		struct sctp_log_closing close;
    921 		struct sctp_blk_args blk;
    922 		struct sctp_cwnd_args cwnd;
    923 		struct sctp_str_log strlog;
    924 		struct sctp_fr_log fr;
    925 		struct sctp_fr_map map;
    926 		struct sctp_rwnd_log rwnd;
    927 		struct sctp_mbcnt_log mbcnt;
    928 		struct sctp_sack_log sack;
    929 		struct sctp_lock_log lock;
    930 		struct sctp_rto_log rto;
    931 		struct sctp_sb_log sb;
    932 		struct sctp_nagle_log nagle;
    933 		struct sctp_sbwake_log wake;
    934 		struct sctp_mbuf_log mb;
    935 		struct sctp_misc_info misc;
    936 	}     x;
    937 };
    938 
    939 struct sctp_cwnd_log_req {
    940 	int32_t num_in_log;		/* Number in log */
    941 	int32_t num_ret;		/* Number returned */
    942 	int32_t start_at;		/* start at this one */
    943 	int32_t end_at;		        /* end at this one */
    944 	struct sctp_cwnd_log log[];
    945 };
    946 
    947 struct sctp_timeval {
    948 	uint32_t tv_sec;
    949 	uint32_t tv_usec;
    950 };
    951 
    952 struct sctpstat {
    953 	struct sctp_timeval sctps_discontinuitytime; /* sctpStats 18 (TimeStamp) */
    954 	/* MIB according to RFC 3873 */
    955 	uint32_t  sctps_currestab;           /* sctpStats  1   (Gauge32) */
    956 	uint32_t  sctps_activeestab;         /* sctpStats  2 (Counter32) */
    957 	uint32_t  sctps_restartestab;
    958 	uint32_t  sctps_collisionestab;
    959 	uint32_t  sctps_passiveestab;        /* sctpStats  3 (Counter32) */
    960 	uint32_t  sctps_aborted;             /* sctpStats  4 (Counter32) */
    961 	uint32_t  sctps_shutdown;            /* sctpStats  5 (Counter32) */
    962 	uint32_t  sctps_outoftheblue;        /* sctpStats  6 (Counter32) */
    963 	uint32_t  sctps_checksumerrors;      /* sctpStats  7 (Counter32) */
    964 	uint32_t  sctps_outcontrolchunks;    /* sctpStats  8 (Counter64) */
    965 	uint32_t  sctps_outorderchunks;      /* sctpStats  9 (Counter64) */
    966 	uint32_t  sctps_outunorderchunks;    /* sctpStats 10 (Counter64) */
    967 	uint32_t  sctps_incontrolchunks;     /* sctpStats 11 (Counter64) */
    968 	uint32_t  sctps_inorderchunks;       /* sctpStats 12 (Counter64) */
    969 	uint32_t  sctps_inunorderchunks;     /* sctpStats 13 (Counter64) */
    970 	uint32_t  sctps_fragusrmsgs;         /* sctpStats 14 (Counter64) */
    971 	uint32_t  sctps_reasmusrmsgs;        /* sctpStats 15 (Counter64) */
    972 	uint32_t  sctps_outpackets;          /* sctpStats 16 (Counter64) */
    973 	uint32_t  sctps_inpackets;           /* sctpStats 17 (Counter64) */
    974 
    975 	/* input statistics: */
    976 	uint32_t  sctps_recvpackets;         /* total input packets        */
    977 	uint32_t  sctps_recvdatagrams;       /* total input datagrams      */
    978 	uint32_t  sctps_recvpktwithdata;     /* total packets that had data */
    979 	uint32_t  sctps_recvsacks;           /* total input SACK chunks    */
    980 	uint32_t  sctps_recvdata;            /* total input DATA chunks    */
    981 	uint32_t  sctps_recvdupdata;         /* total input duplicate DATA chunks */
    982 	uint32_t  sctps_recvheartbeat;       /* total input HB chunks      */
    983 	uint32_t  sctps_recvheartbeatack;    /* total input HB-ACK chunks  */
    984 	uint32_t  sctps_recvecne;            /* total input ECNE chunks    */
    985 	uint32_t  sctps_recvauth;            /* total input AUTH chunks    */
    986 	uint32_t  sctps_recvauthmissing;     /* total input chunks missing AUTH */
    987 	uint32_t  sctps_recvivalhmacid;      /* total number of invalid HMAC ids received */
    988 	uint32_t  sctps_recvivalkeyid;       /* total number of invalid secret ids received */
    989 	uint32_t  sctps_recvauthfailed;      /* total number of auth failed */
    990 	uint32_t  sctps_recvexpress;         /* total fast path receives all one chunk */
    991 	uint32_t  sctps_recvexpressm;        /* total fast path multi-part data */
    992 	uint32_t  sctps_recvnocrc;
    993 	uint32_t  sctps_recvswcrc;
    994 	uint32_t  sctps_recvhwcrc;
    995 
    996 	/* output statistics: */
    997 	uint32_t  sctps_sendpackets;         /* total output packets       */
    998 	uint32_t  sctps_sendsacks;           /* total output SACKs         */
    999 	uint32_t  sctps_senddata;            /* total output DATA chunks   */
   1000 	uint32_t  sctps_sendretransdata;     /* total output retransmitted DATA chunks */
   1001 	uint32_t  sctps_sendfastretrans;     /* total output fast retransmitted DATA chunks */
   1002 	uint32_t  sctps_sendmultfastretrans; /* total FR's that happened more than once
   1003                                               * to same chunk (u-del multi-fr algo).
   1004 					      */
   1005 	uint32_t  sctps_sendheartbeat;       /* total output HB chunks     */
   1006 	uint32_t  sctps_sendecne;            /* total output ECNE chunks    */
   1007 	uint32_t  sctps_sendauth;            /* total output AUTH chunks FIXME   */
   1008 	uint32_t  sctps_senderrors;	     /* ip_output error counter */
   1009 	uint32_t  sctps_sendnocrc;
   1010 	uint32_t  sctps_sendswcrc;
   1011 	uint32_t  sctps_sendhwcrc;
   1012 	/* PCKDROPREP statistics: */
   1013 	uint32_t  sctps_pdrpfmbox;           /* Packet drop from middle box */
   1014 	uint32_t  sctps_pdrpfehos;           /* P-drop from end host */
   1015 	uint32_t  sctps_pdrpmbda;            /* P-drops with data */
   1016 	uint32_t  sctps_pdrpmbct;            /* P-drops, non-data, non-endhost */
   1017 	uint32_t  sctps_pdrpbwrpt;           /* P-drop, non-endhost, bandwidth rep only */
   1018 	uint32_t  sctps_pdrpcrupt;           /* P-drop, not enough for chunk header */
   1019 	uint32_t  sctps_pdrpnedat;           /* P-drop, not enough data to confirm */
   1020 	uint32_t  sctps_pdrppdbrk;           /* P-drop, where process_chunk_drop said break */
   1021 	uint32_t  sctps_pdrptsnnf;           /* P-drop, could not find TSN */
   1022 	uint32_t  sctps_pdrpdnfnd;           /* P-drop, attempt reverse TSN lookup */
   1023 	uint32_t  sctps_pdrpdiwnp;           /* P-drop, e-host confirms zero-rwnd */
   1024 	uint32_t  sctps_pdrpdizrw;           /* P-drop, midbox confirms no space */
   1025 	uint32_t  sctps_pdrpbadd;            /* P-drop, data did not match TSN */
   1026 	uint32_t  sctps_pdrpmark;            /* P-drop, TSN's marked for Fast Retran */
   1027 	/* timeouts */
   1028 	uint32_t  sctps_timoiterator;        /* Number of iterator timers that fired */
   1029 	uint32_t  sctps_timodata;            /* Number of T3 data time outs */
   1030 	uint32_t  sctps_timowindowprobe;     /* Number of window probe (T3) timers that fired */
   1031 	uint32_t  sctps_timoinit;            /* Number of INIT timers that fired */
   1032 	uint32_t  sctps_timosack;            /* Number of sack timers that fired */
   1033 	uint32_t  sctps_timoshutdown;        /* Number of shutdown timers that fired */
   1034 	uint32_t  sctps_timoheartbeat;       /* Number of heartbeat timers that fired */
   1035 	uint32_t  sctps_timocookie;          /* Number of times a cookie timeout fired */
   1036 	uint32_t  sctps_timosecret;          /* Number of times an endpoint changed its cookie secret*/
   1037 	uint32_t  sctps_timopathmtu;         /* Number of PMTU timers that fired */
   1038 	uint32_t  sctps_timoshutdownack;     /* Number of shutdown ack timers that fired */
   1039 	uint32_t  sctps_timoshutdownguard;   /* Number of shutdown guard timers that fired */
   1040 	uint32_t  sctps_timostrmrst;         /* Number of stream reset timers that fired */
   1041 	uint32_t  sctps_timoearlyfr;         /* Number of early FR timers that fired */
   1042 	uint32_t  sctps_timoasconf;          /* Number of times an asconf timer fired */
   1043 	uint32_t  sctps_timodelprim;	     /* Number of times a prim_deleted timer fired */
   1044 	uint32_t  sctps_timoautoclose;       /* Number of times auto close timer fired */
   1045 	uint32_t  sctps_timoassockill;       /* Number of asoc free timers expired */
   1046 	uint32_t  sctps_timoinpkill;         /* Number of inp free timers expired */
   1047 	/* former early FR counters */
   1048 	uint32_t  sctps_spare[11];
   1049 	/* others */
   1050 	uint32_t  sctps_hdrops;	          /* packet shorter than header */
   1051 	uint32_t  sctps_badsum;	          /* checksum error             */
   1052 	uint32_t  sctps_noport;           /* no endpoint for port       */
   1053 	uint32_t  sctps_badvtag;          /* bad v-tag                  */
   1054 	uint32_t  sctps_badsid;           /* bad SID                    */
   1055 	uint32_t  sctps_nomem;            /* no memory                  */
   1056 	uint32_t  sctps_fastretransinrtt; /* number of multiple FR in a RTT window */
   1057 	uint32_t  sctps_markedretrans;
   1058 	uint32_t  sctps_naglesent;        /* nagle allowed sending      */
   1059 	uint32_t  sctps_naglequeued;      /* nagle doesn't allow sending */
   1060 	uint32_t  sctps_maxburstqueued;   /* max burst doesn't allow sending */
   1061 	uint32_t  sctps_ifnomemqueued;    /* look ahead tells us no memory in
   1062                                          * interface ring buffer OR we had a
   1063 					 * send error and are queuing one send.
   1064                                          */
   1065 	uint32_t  sctps_windowprobed;     /* total number of window probes sent */
   1066 	uint32_t  sctps_lowlevelerr;	/* total times an output error causes us
   1067 					 * to clamp down on next user send.
   1068 					 */
   1069 	uint32_t  sctps_lowlevelerrusr;	/* total times sctp_senderrors were caused from
   1070 					 * a user send from a user invoked send not
   1071 					 * a sack response
   1072 					 */
   1073 	uint32_t  sctps_datadropchklmt;	/* Number of in data drops due to chunk limit reached */
   1074 	uint32_t  sctps_datadroprwnd;	/* Number of in data drops due to rwnd limit reached */
   1075 	uint32_t  sctps_ecnereducedcwnd;  /* Number of times a ECN reduced the cwnd */
   1076 	uint32_t  sctps_vtagexpress;	/* Used express lookup via vtag */
   1077 	uint32_t  sctps_vtagbogus;	/* Collision in express lookup. */
   1078 	uint32_t  sctps_primary_randry;	/* Number of times the sender ran dry of user data on primary */
   1079 	uint32_t  sctps_cmt_randry;       /* Same for above */
   1080 	uint32_t  sctps_slowpath_sack;    /* Sacks the slow way */
   1081 	uint32_t  sctps_wu_sacks_sent;	/* Window Update only sacks sent */
   1082 	uint32_t  sctps_sends_with_flags; /* number of sends with sinfo_flags !=0 */
   1083 	uint32_t  sctps_sends_with_unord; /* number of unordered sends */
   1084 	uint32_t  sctps_sends_with_eof; 	/* number of sends with EOF flag set */
   1085 	uint32_t  sctps_sends_with_abort; /* number of sends with ABORT flag set */
   1086 	uint32_t  sctps_protocol_drain_calls;	/* number of times protocol drain called */
   1087 	uint32_t  sctps_protocol_drains_done; 	/* number of times we did a protocol drain */
   1088 	uint32_t  sctps_read_peeks;	/* Number of times recv was called with peek */
   1089 	uint32_t  sctps_cached_chk;       /* Number of cached chunks used */
   1090 	uint32_t  sctps_cached_strmoq;    /* Number of cached stream oq's used */
   1091 	uint32_t  sctps_left_abandon;     /* Number of unread messages abandoned by close */
   1092 	uint32_t  sctps_send_burst_avoid; /* Unused */
   1093 	uint32_t  sctps_send_cwnd_avoid;  /* Send cwnd full  avoidance, already max burst inflight to net */
   1094 	uint32_t  sctps_fwdtsn_map_over;  /* number of map array over-runs via fwd-tsn's */
   1095 	uint32_t  sctps_queue_upd_ecne;  /* Number of times we queued or updated an ECN chunk on send queue */
   1096 	uint32_t  sctps_reserved[31];     /* Future ABI compat - remove int's from here when adding new */
   1097 };
   1098 
   1099 #define SCTP_STAT_INCR(_x) SCTP_STAT_INCR_BY(_x,1)
   1100 #define SCTP_STAT_DECR(_x) SCTP_STAT_DECR_BY(_x,1)
   1101 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
   1102 #define SCTP_STAT_INCR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x += _d)
   1103 #define SCTP_STAT_DECR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x -= _d)
   1104 #else
   1105 #define SCTP_STAT_INCR_BY(_x,_d) atomic_add_int(&SCTP_BASE_STAT(_x), _d)
   1106 #define SCTP_STAT_DECR_BY(_x,_d) atomic_subtract_int(&SCTP_BASE_STAT(_x), _d)
   1107 #endif
   1108 /* The following macros are for handling MIB values, */
   1109 #define SCTP_STAT_INCR_COUNTER32(_x) SCTP_STAT_INCR(_x)
   1110 #define SCTP_STAT_INCR_COUNTER64(_x) SCTP_STAT_INCR(_x)
   1111 #define SCTP_STAT_INCR_GAUGE32(_x) SCTP_STAT_INCR(_x)
   1112 #define SCTP_STAT_DECR_COUNTER32(_x) SCTP_STAT_DECR(_x)
   1113 #define SCTP_STAT_DECR_COUNTER64(_x) SCTP_STAT_DECR(_x)
   1114 #define SCTP_STAT_DECR_GAUGE32(_x) SCTP_STAT_DECR(_x)
   1115 
   1116 #if defined(__Userspace__)
   1117 union sctp_sockstore {
   1118 #if defined(INET)
   1119 	struct sockaddr_in sin;
   1120 #endif
   1121 #if defined(INET6)
   1122 	struct sockaddr_in6 sin6;
   1123 #endif
   1124 	struct sockaddr_conn sconn;
   1125 	struct sockaddr sa;
   1126 };
   1127 #else
   1128 union sctp_sockstore {
   1129 	struct sockaddr_in sin;
   1130 	struct sockaddr_in6 sin6;
   1131 	struct sockaddr sa;
   1132 };
   1133 #endif
   1134 
   1135 
   1136 /***********************************/
   1137 /* And something for us old timers */
   1138 /***********************************/
   1139 
   1140 #ifndef __APPLE__
   1141 #ifndef __Userspace__
   1142 #ifndef ntohll
   1143 #if defined(__Userspace_os_Linux)
   1144 #ifndef _BSD_SOURCE
   1145 #define _BSD_SOURCE
   1146 #endif
   1147 #include <endian.h>
   1148 #else
   1149 #include <sys/endian.h>
   1150 #endif
   1151 #define ntohll(x) be64toh(x)
   1152 #endif
   1153 
   1154 #ifndef htonll
   1155 #if defined(__Userspace_os_Linux)
   1156 #ifndef _BSD_SOURCE
   1157 #define _BSD_SOURCE
   1158 #endif
   1159 #include <endian.h>
   1160 #else
   1161 #include <sys/endian.h>
   1162 #endif
   1163 #define htonll(x) htobe64(x)
   1164 #endif
   1165 #endif
   1166 #endif
   1167 /***********************************/
   1168 
   1169 
   1170 struct xsctp_inpcb {
   1171 	uint32_t last;
   1172 	uint32_t flags;
   1173 #if defined(__FreeBSD__) && __FreeBSD_version < 1000048
   1174 	uint32_t features;
   1175 #else
   1176 	uint64_t features;
   1177 #endif
   1178 	uint32_t total_sends;
   1179 	uint32_t total_recvs;
   1180 	uint32_t total_nospaces;
   1181 	uint32_t fragmentation_point;
   1182 	uint16_t local_port;
   1183 	uint16_t qlen;
   1184 	uint16_t maxqlen;
   1185 #if defined(__Windows__)
   1186 	uint16_t padding;
   1187 #endif
   1188 #if defined(__FreeBSD__) && __FreeBSD_version < 1000048
   1189 	uint32_t extra_padding[32]; /* future */
   1190 #else
   1191 	uint32_t extra_padding[31]; /* future */
   1192 #endif
   1193 };
   1194 
   1195 struct xsctp_tcb {
   1196 	union sctp_sockstore primary_addr;      /* sctpAssocEntry 5/6 */
   1197 	uint32_t last;
   1198 	uint32_t heartbeat_interval;            /* sctpAssocEntry 7   */
   1199 	uint32_t state;                         /* sctpAssocEntry 8   */
   1200 	uint32_t in_streams;                    /* sctpAssocEntry 9   */
   1201 	uint32_t out_streams;                   /* sctpAssocEntry 10  */
   1202 	uint32_t max_nr_retrans;                /* sctpAssocEntry 11  */
   1203 	uint32_t primary_process;               /* sctpAssocEntry 12  */
   1204 	uint32_t T1_expireries;                 /* sctpAssocEntry 13  */
   1205 	uint32_t T2_expireries;                 /* sctpAssocEntry 14  */
   1206 	uint32_t retransmitted_tsns;            /* sctpAssocEntry 15  */
   1207 	uint32_t total_sends;
   1208 	uint32_t total_recvs;
   1209 	uint32_t local_tag;
   1210 	uint32_t remote_tag;
   1211 	uint32_t initial_tsn;
   1212 	uint32_t highest_tsn;
   1213 	uint32_t cumulative_tsn;
   1214 	uint32_t cumulative_tsn_ack;
   1215 	uint32_t mtu;
   1216 	uint32_t refcnt;
   1217 	uint16_t local_port;                    /* sctpAssocEntry 3   */
   1218 	uint16_t remote_port;                   /* sctpAssocEntry 4   */
   1219 	struct sctp_timeval start_time;         /* sctpAssocEntry 16  */
   1220 	struct sctp_timeval discontinuity_time; /* sctpAssocEntry 17  */
   1221 #if defined(__FreeBSD__)
   1222 #if __FreeBSD_version >= 800000
   1223 	uint32_t peers_rwnd;
   1224 	sctp_assoc_t assoc_id;                  /* sctpAssocEntry 1   */
   1225 	uint32_t extra_padding[32];              /* future */
   1226 #else
   1227 #endif
   1228 #else
   1229 	uint32_t peers_rwnd;
   1230 	sctp_assoc_t assoc_id;                  /* sctpAssocEntry 1   */
   1231 	uint32_t extra_padding[32];              /* future */
   1232 #endif
   1233 };
   1234 
   1235 struct xsctp_laddr {
   1236 	union sctp_sockstore address;    /* sctpAssocLocalAddrEntry 1/2 */
   1237 	uint32_t last;
   1238 	struct sctp_timeval start_time;  /* sctpAssocLocalAddrEntry 3   */
   1239 	uint32_t extra_padding[32];       /* future */
   1240 };
   1241 
   1242 struct xsctp_raddr {
   1243 	union sctp_sockstore address;      /* sctpAssocLocalRemEntry 1/2 */
   1244 	uint32_t last;
   1245 	uint32_t rto;                      /* sctpAssocLocalRemEntry 5   */
   1246 	uint32_t max_path_rtx;             /* sctpAssocLocalRemEntry 6   */
   1247 	uint32_t rtx;                      /* sctpAssocLocalRemEntry 7   */
   1248 	uint32_t error_counter;            /*                            */
   1249 	uint32_t cwnd;                     /*                            */
   1250 	uint32_t flight_size;              /*                            */
   1251 	uint32_t mtu;                      /*                            */
   1252 	uint8_t active;                    /* sctpAssocLocalRemEntry 3   */
   1253 	uint8_t confirmed;                 /*                            */
   1254 	uint8_t heartbeat_enabled;         /* sctpAssocLocalRemEntry 4   */
   1255 	uint8_t potentially_failed;
   1256 	struct sctp_timeval start_time;    /* sctpAssocLocalRemEntry 8   */
   1257 #if defined(__FreeBSD__)
   1258 #if __FreeBSD_version >= 800000
   1259 	uint32_t rtt;
   1260 	uint32_t heartbeat_interval;
   1261 	uint32_t extra_padding[31];              /* future */
   1262 #endif
   1263 #else
   1264 	uint32_t rtt;
   1265 	uint32_t heartbeat_interval;
   1266 	uint32_t extra_padding[31];              /* future */
   1267 #endif
   1268 };
   1269 
   1270 #define SCTP_MAX_LOGGING_SIZE 30000
   1271 #define SCTP_TRACE_PARAMS 6                /* This number MUST be even   */
   1272 
   1273 struct sctp_log_entry {
   1274 	uint64_t timestamp;
   1275 	uint32_t subsys;
   1276 	uint32_t padding;
   1277 	uint32_t params[SCTP_TRACE_PARAMS];
   1278 };
   1279 
   1280 struct sctp_log {
   1281 	struct sctp_log_entry entry[SCTP_MAX_LOGGING_SIZE];
   1282 	uint32_t index;
   1283 	uint32_t padding;
   1284 };
   1285 
   1286 /*
   1287  * Kernel defined for sctp_send
   1288  */
   1289 #if defined(_KERNEL) || defined(__Userspace__)
   1290 int
   1291 sctp_lower_sosend(struct socket *so,
   1292     struct sockaddr *addr,
   1293     struct uio *uio,
   1294 #if defined(__Panda__)
   1295     pakhandle_type i_pak,
   1296     pakhandle_type i_control,
   1297 #else
   1298     struct mbuf *i_pak,
   1299     struct mbuf *control,
   1300 #endif
   1301     int flags,
   1302     struct sctp_sndrcvinfo *srcv
   1303 #if !(defined(__Panda__) || defined(__Userspace__))
   1304 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
   1305     ,struct thread *p
   1306 #elif defined(__Windows__)
   1307     , PKTHREAD p
   1308 #else
   1309     ,struct proc *p
   1310 #endif
   1311 #endif
   1312 );
   1313 
   1314 int
   1315 sctp_sorecvmsg(struct socket *so,
   1316     struct uio *uio,
   1317 #if defined(__Panda__)
   1318     particletype **mp,
   1319 #else
   1320     struct mbuf **mp,
   1321 #endif
   1322     struct sockaddr *from,
   1323     int fromlen,
   1324     int *msg_flags,
   1325     struct sctp_sndrcvinfo *sinfo,
   1326     int filling_sinfo);
   1327 #endif
   1328 
   1329 /*
   1330  * API system calls
   1331  */
   1332 #if !(defined(_KERNEL)) && !(defined(__Userspace__))
   1333 
   1334 __BEGIN_DECLS
   1335 #if defined(__FreeBSD__) && __FreeBSD_version < 902000
   1336 int	sctp_peeloff __P((int, sctp_assoc_t));
   1337 int	sctp_bindx __P((int, struct sockaddr *, int, int));
   1338 int	sctp_connectx __P((int, const struct sockaddr *, int, sctp_assoc_t *));
   1339 int	sctp_getaddrlen __P((sa_family_t));
   1340 int	sctp_getpaddrs __P((int, sctp_assoc_t, struct sockaddr **));
   1341 void	sctp_freepaddrs __P((struct sockaddr *));
   1342 int	sctp_getladdrs __P((int, sctp_assoc_t, struct sockaddr **));
   1343 void	sctp_freeladdrs __P((struct sockaddr *));
   1344 int	sctp_opt_info __P((int, sctp_assoc_t, int, void *, socklen_t *));
   1345 
   1346 /* deprecated */
   1347 ssize_t	sctp_sendmsg __P((int, const void *, size_t, const struct sockaddr *,
   1348 	    socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t));
   1349 
   1350 /* deprecated */
   1351 ssize_t	sctp_send __P((int, const void *, size_t,
   1352 	    const struct sctp_sndrcvinfo *, int));
   1353 
   1354 /* deprecated */
   1355 ssize_t	sctp_sendx __P((int, const void *, size_t, struct sockaddr *,
   1356 	    int, struct sctp_sndrcvinfo *, int));
   1357 
   1358 /* deprecated */
   1359 ssize_t	sctp_sendmsgx __P((int sd, const void *, size_t, struct sockaddr *,
   1360 	    int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t));
   1361 
   1362 sctp_assoc_t	sctp_getassocid __P((int, struct sockaddr *));
   1363 
   1364 /* deprecated */
   1365 ssize_t	sctp_recvmsg __P((int, void *, size_t, struct sockaddr *, socklen_t *,
   1366 	    struct sctp_sndrcvinfo *, int *));
   1367 
   1368 ssize_t	sctp_sendv __P((int, const struct iovec *, int, struct sockaddr *,
   1369 	    int, void *, socklen_t, unsigned int, int));
   1370 
   1371 ssize_t	sctp_recvv __P((int, const struct iovec *, int, struct sockaddr *,
   1372 	    socklen_t *, void *, socklen_t *, unsigned int *, int *));
   1373 #else
   1374 int	sctp_peeloff(int, sctp_assoc_t);
   1375 int	sctp_bindx(int, struct sockaddr *, int, int);
   1376 int	sctp_connectx(int, const struct sockaddr *, int, sctp_assoc_t *);
   1377 int	sctp_getaddrlen(sa_family_t);
   1378 int	sctp_getpaddrs(int, sctp_assoc_t, struct sockaddr **);
   1379 void	sctp_freepaddrs(struct sockaddr *);
   1380 int	sctp_getladdrs(int, sctp_assoc_t, struct sockaddr **);
   1381 void	sctp_freeladdrs(struct sockaddr *);
   1382 int	sctp_opt_info(int, sctp_assoc_t, int, void *, socklen_t *);
   1383 
   1384 /* deprecated */
   1385 ssize_t	sctp_sendmsg(int, const void *, size_t, const struct sockaddr *,
   1386 	    socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
   1387 
   1388 /* deprecated */
   1389 ssize_t	sctp_send(int, const void *, size_t,
   1390 	    const struct sctp_sndrcvinfo *, int);
   1391 
   1392 /* deprecated */
   1393 ssize_t	sctp_sendx(int, const void *, size_t, struct sockaddr *,
   1394 	    int, struct sctp_sndrcvinfo *, int);
   1395 
   1396 /* deprecated */
   1397 ssize_t	sctp_sendmsgx(int sd, const void *, size_t, struct sockaddr *,
   1398 	    int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
   1399 
   1400 sctp_assoc_t	sctp_getassocid(int, struct sockaddr *);
   1401 
   1402 /* deprecated */
   1403 ssize_t	sctp_recvmsg(int, void *, size_t, struct sockaddr *, socklen_t *,
   1404 	    struct sctp_sndrcvinfo *, int *);
   1405 
   1406 ssize_t	sctp_sendv(int, const struct iovec *, int, struct sockaddr *,
   1407 	    int, void *, socklen_t, unsigned int, int);
   1408 
   1409 ssize_t	sctp_recvv(int, const struct iovec *, int, struct sockaddr *,
   1410 	    socklen_t *, void *, socklen_t *, unsigned int *, int *);
   1411 #endif
   1412 __END_DECLS
   1413 
   1414 #endif				/* !_KERNEL */
   1415 #endif				/* !__sctp_uio_h__ */
   1416