The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netinet/sctp_uio.h

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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 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: head/sys/netinet/sctp_uio.h 300733 2016-05-26 11:38:26Z tuexen $");
   35 
   36 #ifndef _NETINET_SCTP_UIO_H_
   37 #define _NETINET_SCTP_UIO_H_
   38 
   39 
   40 #if ! defined(_KERNEL)
   41 #include <stdint.h>
   42 #endif
   43 #include <sys/types.h>
   44 #include <sys/socket.h>
   45 #include <netinet/in.h>
   46 
   47 typedef uint32_t sctp_assoc_t;
   48 
   49 #define SCTP_FUTURE_ASSOC  0
   50 #define SCTP_CURRENT_ASSOC 1
   51 #define SCTP_ALL_ASSOC     2
   52 
   53 struct sctp_event {
   54         sctp_assoc_t se_assoc_id;
   55         uint16_t se_type;
   56         uint8_t se_on;
   57 };
   58 
   59 /* Compatibility to previous define's */
   60 #define sctp_stream_reset_events sctp_stream_reset_event
   61 
   62 /* On/Off setup for subscription to events */
   63 struct sctp_event_subscribe {
   64         uint8_t sctp_data_io_event;
   65         uint8_t sctp_association_event;
   66         uint8_t sctp_address_event;
   67         uint8_t sctp_send_failure_event;
   68         uint8_t sctp_peer_error_event;
   69         uint8_t sctp_shutdown_event;
   70         uint8_t sctp_partial_delivery_event;
   71         uint8_t sctp_adaptation_layer_event;
   72         uint8_t sctp_authentication_event;
   73         uint8_t sctp_sender_dry_event;
   74         uint8_t sctp_stream_reset_event;
   75 };
   76 
   77 /* ancillary data types */
   78 #define SCTP_INIT       0x0001
   79 #define SCTP_SNDRCV     0x0002
   80 #define SCTP_EXTRCV     0x0003
   81 #define SCTP_SNDINFO    0x0004
   82 #define SCTP_RCVINFO    0x0005
   83 #define SCTP_NXTINFO    0x0006
   84 #define SCTP_PRINFO     0x0007
   85 #define SCTP_AUTHINFO   0x0008
   86 #define SCTP_DSTADDRV4  0x0009
   87 #define SCTP_DSTADDRV6  0x000a
   88 
   89 /*
   90  * ancillary data structures
   91  */
   92 struct sctp_initmsg {
   93         uint16_t sinit_num_ostreams;
   94         uint16_t sinit_max_instreams;
   95         uint16_t sinit_max_attempts;
   96         uint16_t sinit_max_init_timeo;
   97 };
   98 
   99 /* We add 96 bytes to the size of sctp_sndrcvinfo.
  100  * This makes the current structure 128 bytes long
  101  * which is nicely 64 bit aligned but also has room
  102  * for us to add more and keep ABI compatibility.
  103  * For example, already we have the sctp_extrcvinfo
  104  * when enabled which is 48 bytes.
  105  */
  106 
  107 /*
  108  * The assoc up needs a verfid
  109  * all sendrcvinfo's need a verfid for SENDING only.
  110  */
  111 
  112 
  113 #define SCTP_ALIGN_RESV_PAD 92
  114 #define SCTP_ALIGN_RESV_PAD_SHORT 76
  115 
  116 struct sctp_sndrcvinfo {
  117         uint16_t sinfo_stream;
  118         uint16_t sinfo_ssn;
  119         uint16_t sinfo_flags;
  120         uint32_t sinfo_ppid;
  121         uint32_t sinfo_context;
  122         uint32_t sinfo_timetolive;
  123         uint32_t sinfo_tsn;
  124         uint32_t sinfo_cumtsn;
  125         sctp_assoc_t sinfo_assoc_id;
  126         uint16_t sinfo_keynumber;
  127         uint16_t sinfo_keynumber_valid;
  128         uint8_t __reserve_pad[SCTP_ALIGN_RESV_PAD];
  129 };
  130 
  131 struct sctp_extrcvinfo {
  132         uint16_t sinfo_stream;
  133         uint16_t sinfo_ssn;
  134         uint16_t sinfo_flags;
  135         uint32_t sinfo_ppid;
  136         uint32_t sinfo_context;
  137         uint32_t sinfo_timetolive;      /* should have been sinfo_pr_value */
  138         uint32_t sinfo_tsn;
  139         uint32_t sinfo_cumtsn;
  140         sctp_assoc_t sinfo_assoc_id;
  141         uint16_t serinfo_next_flags;
  142         uint16_t serinfo_next_stream;
  143         uint32_t serinfo_next_aid;
  144         uint32_t serinfo_next_length;
  145         uint32_t serinfo_next_ppid;
  146         uint16_t sinfo_keynumber;
  147         uint16_t sinfo_keynumber_valid;
  148         uint8_t __reserve_pad[SCTP_ALIGN_RESV_PAD_SHORT];
  149 };
  150 
  151 #define sinfo_pr_value sinfo_timetolive
  152 #define sreinfo_next_flags serinfo_next_flags
  153 #define sreinfo_next_stream serinfo_next_stream
  154 #define sreinfo_next_aid serinfo_next_aid
  155 #define sreinfo_next_length serinfo_next_length
  156 #define sreinfo_next_ppid serinfo_next_ppid
  157 
  158 struct sctp_sndinfo {
  159         uint16_t snd_sid;
  160         uint16_t snd_flags;
  161         uint32_t snd_ppid;
  162         uint32_t snd_context;
  163         sctp_assoc_t snd_assoc_id;
  164 };
  165 
  166 struct sctp_prinfo {
  167         uint16_t pr_policy;
  168         uint32_t pr_value;
  169 };
  170 
  171 struct sctp_default_prinfo {
  172         uint16_t pr_policy;
  173         uint32_t pr_value;
  174         sctp_assoc_t pr_assoc_id;
  175 };
  176 
  177 struct sctp_authinfo {
  178         uint16_t auth_keynumber;
  179 };
  180 
  181 struct sctp_rcvinfo {
  182         uint16_t rcv_sid;
  183         uint16_t rcv_ssn;
  184         uint16_t rcv_flags;
  185         uint32_t rcv_ppid;
  186         uint32_t rcv_tsn;
  187         uint32_t rcv_cumtsn;
  188         uint32_t rcv_context;
  189         sctp_assoc_t rcv_assoc_id;
  190 };
  191 
  192 struct sctp_nxtinfo {
  193         uint16_t nxt_sid;
  194         uint16_t nxt_flags;
  195         uint32_t nxt_ppid;
  196         uint32_t nxt_length;
  197         sctp_assoc_t nxt_assoc_id;
  198 };
  199 
  200 #define SCTP_NO_NEXT_MSG           0x0000
  201 #define SCTP_NEXT_MSG_AVAIL        0x0001
  202 #define SCTP_NEXT_MSG_ISCOMPLETE   0x0002
  203 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
  204 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
  205 
  206 struct sctp_recvv_rn {
  207         struct sctp_rcvinfo recvv_rcvinfo;
  208         struct sctp_nxtinfo recvv_nxtinfo;
  209 };
  210 
  211 #define SCTP_RECVV_NOINFO  0
  212 #define SCTP_RECVV_RCVINFO 1
  213 #define SCTP_RECVV_NXTINFO 2
  214 #define SCTP_RECVV_RN      3
  215 
  216 #define SCTP_SENDV_NOINFO   0
  217 #define SCTP_SENDV_SNDINFO  1
  218 #define SCTP_SENDV_PRINFO   2
  219 #define SCTP_SENDV_AUTHINFO 3
  220 #define SCTP_SENDV_SPA      4
  221 
  222 struct sctp_sendv_spa {
  223         uint32_t sendv_flags;
  224         struct sctp_sndinfo sendv_sndinfo;
  225         struct sctp_prinfo sendv_prinfo;
  226         struct sctp_authinfo sendv_authinfo;
  227 };
  228 
  229 #define SCTP_SEND_SNDINFO_VALID  0x00000001
  230 #define SCTP_SEND_PRINFO_VALID   0x00000002
  231 #define SCTP_SEND_AUTHINFO_VALID 0x00000004
  232 
  233 struct sctp_snd_all_completes {
  234         uint16_t sall_stream;
  235         uint16_t sall_flags;
  236         uint32_t sall_ppid;
  237         uint32_t sall_context;
  238         uint32_t sall_num_sent;
  239         uint32_t sall_num_failed;
  240 };
  241 
  242 /* Flags that go into the sinfo->sinfo_flags field */
  243 #define SCTP_NOTIFICATION     0x0010    /* next message is a notification */
  244 #define SCTP_COMPLETE         0x0020    /* next message is complete */
  245 #define SCTP_EOF              0x0100    /* Start shutdown procedures */
  246 #define SCTP_ABORT            0x0200    /* Send an ABORT to peer */
  247 #define SCTP_UNORDERED        0x0400    /* Message is un-ordered */
  248 #define SCTP_ADDR_OVER        0x0800    /* Override the primary-address */
  249 #define SCTP_SENDALL          0x1000    /* Send this on all associations */
  250 #define SCTP_EOR              0x2000    /* end of message signal */
  251 #define SCTP_SACK_IMMEDIATELY 0x4000    /* Set I-Bit */
  252 
  253 #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
  254                                     & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
  255                                         SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
  256                                         SCTP_SACK_IMMEDIATELY)) != 0)
  257 /* for the endpoint */
  258 
  259 /* The lower four bits is an enumeration of PR-SCTP policies */
  260 #define SCTP_PR_SCTP_NONE 0x0000/* Reliable transfer */
  261 #define SCTP_PR_SCTP_TTL  0x0001/* Time based PR-SCTP */
  262 #define SCTP_PR_SCTP_BUF  0x0002/* Buffer based PR-SCTP */
  263 #define SCTP_PR_SCTP_RTX  0x0003/* Number of retransmissions based PR-SCTP */
  264 #define SCTP_PR_SCTP_MAX  SCTP_PR_SCTP_RTX
  265 #define SCTP_PR_SCTP_ALL  0x000f/* Used for aggregated stats */
  266 
  267 #define PR_SCTP_POLICY(x)         ((x) & 0x0f)
  268 #define PR_SCTP_ENABLED(x)        ((PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE) && \
  269                                    (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_ALL))
  270 #define PR_SCTP_TTL_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
  271 #define PR_SCTP_BUF_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
  272 #define PR_SCTP_RTX_ENABLED(x)    (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
  273 #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_MAX)
  274 #define PR_SCTP_VALID_POLICY(x)   (PR_SCTP_POLICY(x) <= SCTP_PR_SCTP_MAX)
  275 
  276 /* Stat's */
  277 struct sctp_pcbinfo {
  278         uint32_t ep_count;
  279         uint32_t asoc_count;
  280         uint32_t laddr_count;
  281         uint32_t raddr_count;
  282         uint32_t chk_count;
  283         uint32_t readq_count;
  284         uint32_t free_chunks;
  285         uint32_t stream_oque;
  286 };
  287 
  288 struct sctp_sockstat {
  289         sctp_assoc_t ss_assoc_id;
  290         uint32_t ss_total_sndbuf;
  291         uint32_t ss_total_recv_buf;
  292 };
  293 
  294 /*
  295  * notification event structures
  296  */
  297 
  298 /*
  299  * association change event
  300  */
  301 struct sctp_assoc_change {
  302         uint16_t sac_type;
  303         uint16_t sac_flags;
  304         uint32_t sac_length;
  305         uint16_t sac_state;
  306         uint16_t sac_error;
  307         uint16_t sac_outbound_streams;
  308         uint16_t sac_inbound_streams;
  309         sctp_assoc_t sac_assoc_id;
  310         uint8_t sac_info[];
  311 };
  312 
  313 /* sac_state values */
  314 #define SCTP_COMM_UP            0x0001
  315 #define SCTP_COMM_LOST          0x0002
  316 #define SCTP_RESTART            0x0003
  317 #define SCTP_SHUTDOWN_COMP      0x0004
  318 #define SCTP_CANT_STR_ASSOC     0x0005
  319 
  320 /* sac_info values */
  321 #define SCTP_ASSOC_SUPPORTS_PR                  0x01
  322 #define SCTP_ASSOC_SUPPORTS_AUTH                0x02
  323 #define SCTP_ASSOC_SUPPORTS_ASCONF              0x03
  324 #define SCTP_ASSOC_SUPPORTS_MULTIBUF            0x04
  325 #define SCTP_ASSOC_SUPPORTS_RE_CONFIG           0x05
  326 #define SCTP_ASSOC_SUPPORTS_INTERLEAVING        0x06
  327 #define SCTP_ASSOC_SUPPORTS_MAX                 0x06
  328 /*
  329  * Address event
  330  */
  331 struct sctp_paddr_change {
  332         uint16_t spc_type;
  333         uint16_t spc_flags;
  334         uint32_t spc_length;
  335         struct sockaddr_storage spc_aaddr;
  336         uint32_t spc_state;
  337         uint32_t spc_error;
  338         sctp_assoc_t spc_assoc_id;
  339 };
  340 
  341 /* paddr state values */
  342 #define SCTP_ADDR_AVAILABLE     0x0001
  343 #define SCTP_ADDR_UNREACHABLE   0x0002
  344 #define SCTP_ADDR_REMOVED       0x0003
  345 #define SCTP_ADDR_ADDED         0x0004
  346 #define SCTP_ADDR_MADE_PRIM     0x0005
  347 #define SCTP_ADDR_CONFIRMED     0x0006
  348 
  349 #define SCTP_ACTIVE             0x0001  /* SCTP_ADDR_REACHABLE */
  350 #define SCTP_INACTIVE           0x0002  /* neither SCTP_ADDR_REACHABLE nor
  351                                          * SCTP_ADDR_UNCONFIRMED */
  352 #define SCTP_UNCONFIRMED        0x0200  /* SCTP_ADDR_UNCONFIRMED */
  353 
  354 /* remote error events */
  355 struct sctp_remote_error {
  356         uint16_t sre_type;
  357         uint16_t sre_flags;
  358         uint32_t sre_length;
  359         uint16_t sre_error;
  360         sctp_assoc_t sre_assoc_id;
  361         uint8_t sre_data[];
  362 };
  363 
  364 /* data send failure event (deprecated) */
  365 struct sctp_send_failed {
  366         uint16_t ssf_type;
  367         uint16_t ssf_flags;
  368         uint32_t ssf_length;
  369         uint32_t ssf_error;
  370         struct sctp_sndrcvinfo ssf_info;
  371         sctp_assoc_t ssf_assoc_id;
  372         uint8_t ssf_data[];
  373 };
  374 
  375 /* data send failure event (not deprecated) */
  376 struct sctp_send_failed_event {
  377         uint16_t ssfe_type;
  378         uint16_t ssfe_flags;
  379         uint32_t ssfe_length;
  380         uint32_t ssfe_error;
  381         struct sctp_sndinfo ssfe_info;
  382         sctp_assoc_t ssfe_assoc_id;
  383         uint8_t ssfe_data[];
  384 };
  385 
  386 /* flag that indicates state of data */
  387 #define SCTP_DATA_UNSENT        0x0001  /* inqueue never on wire */
  388 #define SCTP_DATA_SENT          0x0002  /* on wire at failure */
  389 
  390 /* shutdown event */
  391 struct sctp_shutdown_event {
  392         uint16_t sse_type;
  393         uint16_t sse_flags;
  394         uint32_t sse_length;
  395         sctp_assoc_t sse_assoc_id;
  396 };
  397 
  398 /* Adaptation layer indication stuff */
  399 struct sctp_adaptation_event {
  400         uint16_t sai_type;
  401         uint16_t sai_flags;
  402         uint32_t sai_length;
  403         uint32_t sai_adaptation_ind;
  404         sctp_assoc_t sai_assoc_id;
  405 };
  406 
  407 struct sctp_setadaptation {
  408         uint32_t ssb_adaptation_ind;
  409 };
  410 
  411 /* compatible old spelling */
  412 struct sctp_adaption_event {
  413         uint16_t sai_type;
  414         uint16_t sai_flags;
  415         uint32_t sai_length;
  416         uint32_t sai_adaption_ind;
  417         sctp_assoc_t sai_assoc_id;
  418 };
  419 
  420 struct sctp_setadaption {
  421         uint32_t ssb_adaption_ind;
  422 };
  423 
  424 
  425 /*
  426  * Partial Delivery API event
  427  */
  428 struct sctp_pdapi_event {
  429         uint16_t pdapi_type;
  430         uint16_t pdapi_flags;
  431         uint32_t pdapi_length;
  432         uint32_t pdapi_indication;
  433         uint16_t pdapi_stream;
  434         uint16_t pdapi_seq;
  435         sctp_assoc_t pdapi_assoc_id;
  436 };
  437 
  438 /* indication values */
  439 #define SCTP_PARTIAL_DELIVERY_ABORTED   0x0001
  440 
  441 
  442 /*
  443  * authentication key event
  444  */
  445 struct sctp_authkey_event {
  446         uint16_t auth_type;
  447         uint16_t auth_flags;
  448         uint32_t auth_length;
  449         uint16_t auth_keynumber;
  450         uint16_t auth_altkeynumber;
  451         uint32_t auth_indication;
  452         sctp_assoc_t auth_assoc_id;
  453 };
  454 
  455 /* indication values */
  456 #define SCTP_AUTH_NEW_KEY       0x0001
  457 #define SCTP_AUTH_NEWKEY        SCTP_AUTH_NEW_KEY
  458 #define SCTP_AUTH_NO_AUTH       0x0002
  459 #define SCTP_AUTH_FREE_KEY      0x0003
  460 
  461 
  462 struct sctp_sender_dry_event {
  463         uint16_t sender_dry_type;
  464         uint16_t sender_dry_flags;
  465         uint32_t sender_dry_length;
  466         sctp_assoc_t sender_dry_assoc_id;
  467 };
  468 
  469 
  470 /*
  471  * Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT
  472  */
  473 struct sctp_stream_reset_event {
  474         uint16_t strreset_type;
  475         uint16_t strreset_flags;
  476         uint32_t strreset_length;
  477         sctp_assoc_t strreset_assoc_id;
  478         uint16_t strreset_stream_list[];
  479 };
  480 
  481 /* flags in stream_reset_event (strreset_flags) */
  482 #define SCTP_STREAM_RESET_INCOMING_SSN  0x0001
  483 #define SCTP_STREAM_RESET_OUTGOING_SSN  0x0002
  484 #define SCTP_STREAM_RESET_DENIED        0x0004
  485 #define SCTP_STREAM_RESET_FAILED        0x0008
  486 
  487 /*
  488  * Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT
  489  */
  490 struct sctp_assoc_reset_event {
  491         uint16_t assocreset_type;
  492         uint16_t assocreset_flags;
  493         uint32_t assocreset_length;
  494         sctp_assoc_t assocreset_assoc_id;
  495         uint32_t assocreset_local_tsn;
  496         uint32_t assocreset_remote_tsn;
  497 };
  498 
  499 #define SCTP_ASSOC_RESET_DENIED         0x0004
  500 #define SCTP_ASSOC_RESET_FAILED         0x0008
  501 
  502 /*
  503  * Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT
  504  */
  505 struct sctp_stream_change_event {
  506         uint16_t strchange_type;
  507         uint16_t strchange_flags;
  508         uint32_t strchange_length;
  509         sctp_assoc_t strchange_assoc_id;
  510         uint16_t strchange_instrms;
  511         uint16_t strchange_outstrms;
  512 };
  513 
  514 #define SCTP_STREAM_CHANGE_DENIED       0x0004
  515 #define SCTP_STREAM_CHANGE_FAILED       0x0008
  516 
  517 
  518 /* SCTP notification event */
  519 struct sctp_tlv {
  520         uint16_t sn_type;
  521         uint16_t sn_flags;
  522         uint32_t sn_length;
  523 };
  524 
  525 union sctp_notification {
  526         struct sctp_tlv sn_header;
  527         struct sctp_assoc_change sn_assoc_change;
  528         struct sctp_paddr_change sn_paddr_change;
  529         struct sctp_remote_error sn_remote_error;
  530         struct sctp_send_failed sn_send_failed;
  531         struct sctp_shutdown_event sn_shutdown_event;
  532         struct sctp_adaptation_event sn_adaptation_event;
  533         /* compatibility same as above */
  534         struct sctp_adaption_event sn_adaption_event;
  535         struct sctp_pdapi_event sn_pdapi_event;
  536         struct sctp_authkey_event sn_auth_event;
  537         struct sctp_sender_dry_event sn_sender_dry_event;
  538         struct sctp_send_failed_event sn_send_failed_event;
  539         struct sctp_stream_reset_event sn_strreset_event;
  540         struct sctp_assoc_reset_event sn_assocreset_event;
  541         struct sctp_stream_change_event sn_strchange_event;
  542 };
  543 
  544 /* notification types */
  545 #define SCTP_ASSOC_CHANGE                       0x0001
  546 #define SCTP_PEER_ADDR_CHANGE                   0x0002
  547 #define SCTP_REMOTE_ERROR                       0x0003
  548 #define SCTP_SEND_FAILED                        0x0004
  549 #define SCTP_SHUTDOWN_EVENT                     0x0005
  550 #define SCTP_ADAPTATION_INDICATION              0x0006
  551 /* same as above */
  552 #define SCTP_ADAPTION_INDICATION                0x0006
  553 #define SCTP_PARTIAL_DELIVERY_EVENT             0x0007
  554 #define SCTP_AUTHENTICATION_EVENT               0x0008
  555 #define SCTP_STREAM_RESET_EVENT                 0x0009
  556 #define SCTP_SENDER_DRY_EVENT                   0x000a
  557 #define SCTP_NOTIFICATIONS_STOPPED_EVENT        0x000b  /* we don't send this */
  558 #define SCTP_ASSOC_RESET_EVENT                  0x000c
  559 #define SCTP_STREAM_CHANGE_EVENT                0x000d
  560 #define SCTP_SEND_FAILED_EVENT                  0x000e
  561 /*
  562  * socket option structs
  563  */
  564 
  565 struct sctp_paddrparams {
  566         struct sockaddr_storage spp_address;
  567         sctp_assoc_t spp_assoc_id;
  568         uint32_t spp_hbinterval;
  569         uint32_t spp_pathmtu;
  570         uint32_t spp_flags;
  571         uint32_t spp_ipv6_flowlabel;
  572         uint16_t spp_pathmaxrxt;
  573         uint8_t spp_dscp;
  574 };
  575 
  576 #define spp_ipv4_tos spp_dscp
  577 
  578 #define SPP_HB_ENABLE           0x00000001
  579 #define SPP_HB_DISABLE          0x00000002
  580 #define SPP_HB_DEMAND           0x00000004
  581 #define SPP_PMTUD_ENABLE        0x00000008
  582 #define SPP_PMTUD_DISABLE       0x00000010
  583 #define SPP_HB_TIME_IS_ZERO     0x00000080
  584 #define SPP_IPV6_FLOWLABEL      0x00000100
  585 #define SPP_DSCP                0x00000200
  586 #define SPP_IPV4_TOS            SPP_DSCP
  587 
  588 struct sctp_paddrthlds {
  589         struct sockaddr_storage spt_address;
  590         sctp_assoc_t spt_assoc_id;
  591         uint16_t spt_pathmaxrxt;
  592         uint16_t spt_pathpfthld;
  593         uint16_t spt_pathcpthld;
  594 };
  595 
  596 struct sctp_paddrinfo {
  597         struct sockaddr_storage spinfo_address;
  598         sctp_assoc_t spinfo_assoc_id;
  599         int32_t spinfo_state;
  600         uint32_t spinfo_cwnd;
  601         uint32_t spinfo_srtt;
  602         uint32_t spinfo_rto;
  603         uint32_t spinfo_mtu;
  604 };
  605 
  606 struct sctp_rtoinfo {
  607         sctp_assoc_t srto_assoc_id;
  608         uint32_t srto_initial;
  609         uint32_t srto_max;
  610         uint32_t srto_min;
  611 };
  612 
  613 struct sctp_assocparams {
  614         sctp_assoc_t sasoc_assoc_id;
  615         uint32_t sasoc_peer_rwnd;
  616         uint32_t sasoc_local_rwnd;
  617         uint32_t sasoc_cookie_life;
  618         uint16_t sasoc_asocmaxrxt;
  619         uint16_t sasoc_number_peer_destinations;
  620 };
  621 
  622 struct sctp_setprim {
  623         struct sockaddr_storage ssp_addr;
  624         sctp_assoc_t ssp_assoc_id;
  625         uint8_t ssp_padding[4];
  626 };
  627 
  628 struct sctp_setpeerprim {
  629         struct sockaddr_storage sspp_addr;
  630         sctp_assoc_t sspp_assoc_id;
  631         uint8_t sspp_padding[4];
  632 };
  633 
  634 struct sctp_getaddresses {
  635         sctp_assoc_t sget_assoc_id;
  636         /* addr is filled in for N * sockaddr_storage */
  637         struct sockaddr addr[1];
  638 };
  639 
  640 struct sctp_status {
  641         sctp_assoc_t sstat_assoc_id;
  642         int32_t sstat_state;
  643         uint32_t sstat_rwnd;
  644         uint16_t sstat_unackdata;
  645         uint16_t sstat_penddata;
  646         uint16_t sstat_instrms;
  647         uint16_t sstat_outstrms;
  648         uint32_t sstat_fragmentation_point;
  649         struct sctp_paddrinfo sstat_primary;
  650 };
  651 
  652 /*
  653  * AUTHENTICATION support
  654  */
  655 /* SCTP_AUTH_CHUNK */
  656 struct sctp_authchunk {
  657         uint8_t sauth_chunk;
  658 };
  659 
  660 /* SCTP_AUTH_KEY */
  661 struct sctp_authkey {
  662         sctp_assoc_t sca_assoc_id;
  663         uint16_t sca_keynumber;
  664         uint16_t sca_keylength;
  665         uint8_t sca_key[];
  666 };
  667 
  668 /* SCTP_HMAC_IDENT */
  669 struct sctp_hmacalgo {
  670         uint32_t shmac_number_of_idents;
  671         uint16_t shmac_idents[];
  672 };
  673 
  674 /* AUTH hmac_id */
  675 #define SCTP_AUTH_HMAC_ID_RSVD          0x0000
  676 #define SCTP_AUTH_HMAC_ID_SHA1          0x0001  /* default, mandatory */
  677 #define SCTP_AUTH_HMAC_ID_SHA256        0x0003
  678 
  679 /* SCTP_AUTH_ACTIVE_KEY / SCTP_AUTH_DELETE_KEY */
  680 struct sctp_authkeyid {
  681         sctp_assoc_t scact_assoc_id;
  682         uint16_t scact_keynumber;
  683 };
  684 
  685 /* SCTP_PEER_AUTH_CHUNKS / SCTP_LOCAL_AUTH_CHUNKS */
  686 struct sctp_authchunks {
  687         sctp_assoc_t gauth_assoc_id;
  688         uint32_t gauth_number_of_chunks;
  689         uint8_t gauth_chunks[];
  690 };
  691 
  692 struct sctp_assoc_value {
  693         sctp_assoc_t assoc_id;
  694         uint32_t assoc_value;
  695 };
  696 
  697 struct sctp_cc_option {
  698         int option;
  699         struct sctp_assoc_value aid_value;
  700 };
  701 
  702 struct sctp_stream_value {
  703         sctp_assoc_t assoc_id;
  704         uint16_t stream_id;
  705         uint16_t stream_value;
  706 };
  707 
  708 struct sctp_assoc_ids {
  709         uint32_t gaids_number_of_ids;
  710         sctp_assoc_t gaids_assoc_id[];
  711 };
  712 
  713 struct sctp_sack_info {
  714         sctp_assoc_t sack_assoc_id;
  715         uint32_t sack_delay;
  716         uint32_t sack_freq;
  717 };
  718 
  719 struct sctp_timeouts {
  720         sctp_assoc_t stimo_assoc_id;
  721         uint32_t stimo_init;
  722         uint32_t stimo_data;
  723         uint32_t stimo_sack;
  724         uint32_t stimo_shutdown;
  725         uint32_t stimo_heartbeat;
  726         uint32_t stimo_cookie;
  727         uint32_t stimo_shutdownack;
  728 };
  729 
  730 struct sctp_udpencaps {
  731         struct sockaddr_storage sue_address;
  732         sctp_assoc_t sue_assoc_id;
  733         uint16_t sue_port;
  734 };
  735 
  736 struct sctp_prstatus {
  737         sctp_assoc_t sprstat_assoc_id;
  738         uint16_t sprstat_sid;
  739         uint16_t sprstat_policy;
  740         uint64_t sprstat_abandoned_unsent;
  741         uint64_t sprstat_abandoned_sent;
  742 };
  743 
  744 struct sctp_cwnd_args {
  745         struct sctp_nets *net;  /* network to *//* FIXME: LP64 issue */
  746         uint32_t cwnd_new_value;/* cwnd in k */
  747         uint32_t pseudo_cumack;
  748         uint16_t inflight;      /* flightsize in k */
  749         uint16_t cwnd_augment;  /* increment to it */
  750         uint8_t meets_pseudo_cumack;
  751         uint8_t need_new_pseudo_cumack;
  752         uint8_t cnt_in_send;
  753         uint8_t cnt_in_str;
  754 };
  755 
  756 struct sctp_blk_args {
  757         uint32_t onsb;          /* in 1k bytes */
  758         uint32_t sndlen;        /* len of send being attempted */
  759         uint32_t peer_rwnd;     /* rwnd of peer */
  760         uint16_t send_sent_qcnt;/* chnk cnt */
  761         uint16_t stream_qcnt;   /* chnk cnt */
  762         uint16_t chunks_on_oque;/* chunks out */
  763         uint16_t flight_size;   /* flight size in k */
  764 };
  765 
  766 /*
  767  * Max we can reset in one setting, note this is dictated not by the define
  768  * but the size of a mbuf cluster so don't change this define and think you
  769  * can specify more. You must do multiple resets if you want to reset more
  770  * than SCTP_MAX_EXPLICIT_STR_RESET.
  771  */
  772 #define SCTP_MAX_EXPLICT_STR_RESET   1000
  773 
  774 struct sctp_reset_streams {
  775         sctp_assoc_t srs_assoc_id;
  776         uint16_t srs_flags;
  777         uint16_t srs_number_streams;    /* 0 == ALL */
  778         uint16_t srs_stream_list[];     /* list if strrst_num_streams is not 0 */
  779 };
  780 
  781 struct sctp_add_streams {
  782         sctp_assoc_t sas_assoc_id;
  783         uint16_t sas_instrms;
  784         uint16_t sas_outstrms;
  785 };
  786 
  787 struct sctp_get_nonce_values {
  788         sctp_assoc_t gn_assoc_id;
  789         uint32_t gn_peers_tag;
  790         uint32_t gn_local_tag;
  791 };
  792 
  793 /* Debugging logs */
  794 struct sctp_str_log {
  795         void *stcb;             /* FIXME: LP64 issue */
  796         uint32_t n_tsn;
  797         uint32_t e_tsn;
  798         uint16_t n_sseq;
  799         uint16_t e_sseq;
  800         uint16_t strm;
  801 };
  802 
  803 struct sctp_sb_log {
  804         void *stcb;             /* FIXME: LP64 issue */
  805         uint32_t so_sbcc;
  806         uint32_t stcb_sbcc;
  807         uint32_t incr;
  808 };
  809 
  810 struct sctp_fr_log {
  811         uint32_t largest_tsn;
  812         uint32_t largest_new_tsn;
  813         uint32_t tsn;
  814 };
  815 
  816 struct sctp_fr_map {
  817         uint32_t base;
  818         uint32_t cum;
  819         uint32_t high;
  820 };
  821 
  822 struct sctp_rwnd_log {
  823         uint32_t rwnd;
  824         uint32_t send_size;
  825         uint32_t overhead;
  826         uint32_t new_rwnd;
  827 };
  828 
  829 struct sctp_mbcnt_log {
  830         uint32_t total_queue_size;
  831         uint32_t size_change;
  832         uint32_t total_queue_mb_size;
  833         uint32_t mbcnt_change;
  834 };
  835 
  836 struct sctp_sack_log {
  837         uint32_t cumack;
  838         uint32_t oldcumack;
  839         uint32_t tsn;
  840         uint16_t numGaps;
  841         uint16_t numDups;
  842 };
  843 
  844 struct sctp_lock_log {
  845         void *sock;             /* FIXME: LP64 issue */
  846         void *inp;              /* FIXME: LP64 issue */
  847         uint8_t tcb_lock;
  848         uint8_t inp_lock;
  849         uint8_t info_lock;
  850         uint8_t sock_lock;
  851         uint8_t sockrcvbuf_lock;
  852         uint8_t socksndbuf_lock;
  853         uint8_t create_lock;
  854         uint8_t resv;
  855 };
  856 
  857 struct sctp_rto_log {
  858         void *net;              /* FIXME: LP64 issue */
  859         uint32_t rtt;
  860 };
  861 
  862 struct sctp_nagle_log {
  863         void *stcb;             /* FIXME: LP64 issue */
  864         uint32_t total_flight;
  865         uint32_t total_in_queue;
  866         uint16_t count_in_queue;
  867         uint16_t count_in_flight;
  868 };
  869 
  870 struct sctp_sbwake_log {
  871         void *stcb;             /* FIXME: LP64 issue */
  872         uint16_t send_q;
  873         uint16_t sent_q;
  874         uint16_t flight;
  875         uint16_t wake_cnt;
  876         uint8_t stream_qcnt;    /* chnk cnt */
  877         uint8_t chunks_on_oque; /* chunks out */
  878         uint8_t sbflags;
  879         uint8_t sctpflags;
  880 };
  881 
  882 struct sctp_misc_info {
  883         uint32_t log1;
  884         uint32_t log2;
  885         uint32_t log3;
  886         uint32_t log4;
  887 };
  888 
  889 struct sctp_log_closing {
  890         void *inp;              /* FIXME: LP64 issue */
  891         void *stcb;             /* FIXME: LP64 issue */
  892         uint32_t sctp_flags;
  893         uint16_t state;
  894         int16_t loc;
  895 };
  896 
  897 struct sctp_mbuf_log {
  898         struct mbuf *mp;        /* FIXME: LP64 issue */
  899         caddr_t ext;
  900         caddr_t data;
  901         uint16_t size;
  902         uint8_t refcnt;
  903         uint8_t mbuf_flags;
  904 };
  905 
  906 struct sctp_cwnd_log {
  907         uint64_t time_event;
  908         uint8_t from;
  909         uint8_t event_type;
  910         uint8_t resv[2];
  911         union {
  912                 struct sctp_log_closing close;
  913                 struct sctp_blk_args blk;
  914                 struct sctp_cwnd_args cwnd;
  915                 struct sctp_str_log strlog;
  916                 struct sctp_fr_log fr;
  917                 struct sctp_fr_map map;
  918                 struct sctp_rwnd_log rwnd;
  919                 struct sctp_mbcnt_log mbcnt;
  920                 struct sctp_sack_log sack;
  921                 struct sctp_lock_log lock;
  922                 struct sctp_rto_log rto;
  923                 struct sctp_sb_log sb;
  924                 struct sctp_nagle_log nagle;
  925                 struct sctp_sbwake_log wake;
  926                 struct sctp_mbuf_log mb;
  927                 struct sctp_misc_info misc;
  928         }     x;
  929 };
  930 
  931 struct sctp_cwnd_log_req {
  932         int32_t num_in_log;     /* Number in log */
  933         int32_t num_ret;        /* Number returned */
  934         int32_t start_at;       /* start at this one */
  935         int32_t end_at;         /* end at this one */
  936         struct sctp_cwnd_log log[];
  937 };
  938 
  939 struct sctp_timeval {
  940         uint32_t tv_sec;
  941         uint32_t tv_usec;
  942 };
  943 
  944 struct sctpstat {
  945         struct sctp_timeval sctps_discontinuitytime;    /* sctpStats 18
  946                                                          * (TimeStamp) */
  947         /* MIB according to RFC 3873 */
  948         uint32_t sctps_currestab;       /* sctpStats  1   (Gauge32) */
  949         uint32_t sctps_activeestab;     /* sctpStats  2 (Counter32) */
  950         uint32_t sctps_restartestab;
  951         uint32_t sctps_collisionestab;
  952         uint32_t sctps_passiveestab;    /* sctpStats  3 (Counter32) */
  953         uint32_t sctps_aborted; /* sctpStats  4 (Counter32) */
  954         uint32_t sctps_shutdown;/* sctpStats  5 (Counter32) */
  955         uint32_t sctps_outoftheblue;    /* sctpStats  6 (Counter32) */
  956         uint32_t sctps_checksumerrors;  /* sctpStats  7 (Counter32) */
  957         uint32_t sctps_outcontrolchunks;        /* sctpStats  8 (Counter64) */
  958         uint32_t sctps_outorderchunks;  /* sctpStats  9 (Counter64) */
  959         uint32_t sctps_outunorderchunks;        /* sctpStats 10 (Counter64) */
  960         uint32_t sctps_incontrolchunks; /* sctpStats 11 (Counter64) */
  961         uint32_t sctps_inorderchunks;   /* sctpStats 12 (Counter64) */
  962         uint32_t sctps_inunorderchunks; /* sctpStats 13 (Counter64) */
  963         uint32_t sctps_fragusrmsgs;     /* sctpStats 14 (Counter64) */
  964         uint32_t sctps_reasmusrmsgs;    /* sctpStats 15 (Counter64) */
  965         uint32_t sctps_outpackets;      /* sctpStats 16 (Counter64) */
  966         uint32_t sctps_inpackets;       /* sctpStats 17 (Counter64) */
  967 
  968         /* input statistics: */
  969         uint32_t sctps_recvpackets;     /* total input packets        */
  970         uint32_t sctps_recvdatagrams;   /* total input datagrams      */
  971         uint32_t sctps_recvpktwithdata; /* total packets that had data */
  972         uint32_t sctps_recvsacks;       /* total input SACK chunks    */
  973         uint32_t sctps_recvdata;/* total input DATA chunks    */
  974         uint32_t sctps_recvdupdata;     /* total input duplicate DATA chunks */
  975         uint32_t sctps_recvheartbeat;   /* total input HB chunks      */
  976         uint32_t sctps_recvheartbeatack;        /* total input HB-ACK chunks  */
  977         uint32_t sctps_recvecne;/* total input ECNE chunks    */
  978         uint32_t sctps_recvauth;/* total input AUTH chunks    */
  979         uint32_t sctps_recvauthmissing; /* total input chunks missing AUTH */
  980         uint32_t sctps_recvivalhmacid;  /* total number of invalid HMAC ids
  981                                          * received */
  982         uint32_t sctps_recvivalkeyid;   /* total number of invalid secret ids
  983                                          * received */
  984         uint32_t sctps_recvauthfailed;  /* total number of auth failed */
  985         uint32_t sctps_recvexpress;     /* total fast path receives all one
  986                                          * chunk */
  987         uint32_t sctps_recvexpressm;    /* total fast path multi-part data */
  988         uint32_t sctps_recvnocrc;
  989         uint32_t sctps_recvswcrc;
  990         uint32_t sctps_recvhwcrc;
  991 
  992         /* output statistics: */
  993         uint32_t sctps_sendpackets;     /* total output packets       */
  994         uint32_t sctps_sendsacks;       /* total output SACKs         */
  995         uint32_t sctps_senddata;/* total output DATA chunks   */
  996         uint32_t sctps_sendretransdata; /* total output retransmitted DATA
  997                                          * chunks */
  998         uint32_t sctps_sendfastretrans; /* total output fast retransmitted
  999                                          * DATA chunks */
 1000         uint32_t sctps_sendmultfastretrans;     /* total FR's that happened
 1001                                                  * more than once to same
 1002                                                  * chunk (u-del multi-fr
 1003                                                  * algo). */
 1004         uint32_t sctps_sendheartbeat;   /* total output HB chunks     */
 1005         uint32_t sctps_sendecne;/* total output ECNE chunks    */
 1006         uint32_t sctps_sendauth;/* total output AUTH chunks FIXME   */
 1007         uint32_t sctps_senderrors;      /* ip_output error counter */
 1008         uint32_t sctps_sendnocrc;
 1009         uint32_t sctps_sendswcrc;
 1010         uint32_t sctps_sendhwcrc;
 1011         /* PCKDROPREP statistics: */
 1012         uint32_t sctps_pdrpfmbox;       /* Packet drop from middle box */
 1013         uint32_t sctps_pdrpfehos;       /* P-drop from end host */
 1014         uint32_t sctps_pdrpmbda;/* P-drops with data */
 1015         uint32_t sctps_pdrpmbct;/* P-drops, non-data, non-endhost */
 1016         uint32_t sctps_pdrpbwrpt;       /* P-drop, non-endhost, bandwidth rep
 1017                                          * only */
 1018         uint32_t sctps_pdrpcrupt;       /* P-drop, not enough for chunk header */
 1019         uint32_t sctps_pdrpnedat;       /* P-drop, not enough data to confirm */
 1020         uint32_t sctps_pdrppdbrk;       /* P-drop, where process_chunk_drop
 1021                                          * said break */
 1022         uint32_t sctps_pdrptsnnf;       /* P-drop, could not find TSN */
 1023         uint32_t sctps_pdrpdnfnd;       /* P-drop, attempt reverse TSN lookup */
 1024         uint32_t sctps_pdrpdiwnp;       /* P-drop, e-host confirms zero-rwnd */
 1025         uint32_t sctps_pdrpdizrw;       /* P-drop, midbox confirms no space */
 1026         uint32_t sctps_pdrpbadd;/* P-drop, data did not match TSN */
 1027         uint32_t sctps_pdrpmark;/* P-drop, TSN's marked for Fast Retran */
 1028         /* timeouts */
 1029         uint32_t sctps_timoiterator;    /* Number of iterator timers that
 1030                                          * fired */
 1031         uint32_t sctps_timodata;/* Number of T3 data time outs */
 1032         uint32_t sctps_timowindowprobe; /* Number of window probe (T3) timers
 1033                                          * that fired */
 1034         uint32_t sctps_timoinit;/* Number of INIT timers that fired */
 1035         uint32_t sctps_timosack;/* Number of sack timers that fired */
 1036         uint32_t sctps_timoshutdown;    /* Number of shutdown timers that
 1037                                          * fired */
 1038         uint32_t sctps_timoheartbeat;   /* Number of heartbeat timers that
 1039                                          * fired */
 1040         uint32_t sctps_timocookie;      /* Number of times a cookie timeout
 1041                                          * fired */
 1042         uint32_t sctps_timosecret;      /* Number of times an endpoint changed
 1043                                          * its cookie secret */
 1044         uint32_t sctps_timopathmtu;     /* Number of PMTU timers that fired */
 1045         uint32_t sctps_timoshutdownack; /* Number of shutdown ack timers that
 1046                                          * fired */
 1047         uint32_t sctps_timoshutdownguard;       /* Number of shutdown guard
 1048                                                  * timers that fired */
 1049         uint32_t sctps_timostrmrst;     /* Number of stream reset timers that
 1050                                          * fired */
 1051         uint32_t sctps_timoearlyfr;     /* Number of early FR timers that
 1052                                          * fired */
 1053         uint32_t sctps_timoasconf;      /* Number of times an asconf timer
 1054                                          * fired */
 1055         uint32_t sctps_timodelprim;     /* Number of times a prim_deleted
 1056                                          * timer fired */
 1057         uint32_t sctps_timoautoclose;   /* Number of times auto close timer
 1058                                          * fired */
 1059         uint32_t sctps_timoassockill;   /* Number of asoc free timers expired */
 1060         uint32_t sctps_timoinpkill;     /* Number of inp free timers expired */
 1061         /* former early FR counters */
 1062         uint32_t sctps_spare[11];
 1063         /* others */
 1064         uint32_t sctps_hdrops;  /* packet shorter than header */
 1065         uint32_t sctps_badsum;  /* checksum error             */
 1066         uint32_t sctps_noport;  /* no endpoint for port       */
 1067         uint32_t sctps_badvtag; /* bad v-tag                  */
 1068         uint32_t sctps_badsid;  /* bad SID                    */
 1069         uint32_t sctps_nomem;   /* no memory                  */
 1070         uint32_t sctps_fastretransinrtt;        /* number of multiple FR in a
 1071                                                  * RTT window */
 1072         uint32_t sctps_markedretrans;
 1073         uint32_t sctps_naglesent;       /* nagle allowed sending      */
 1074         uint32_t sctps_naglequeued;     /* nagle doesn't allow sending */
 1075         uint32_t sctps_maxburstqueued;  /* max burst doesn't allow sending */
 1076         uint32_t sctps_ifnomemqueued;   /* look ahead tells us no memory in
 1077                                          * interface ring buffer OR we had a
 1078                                          * send error and are queuing one
 1079                                          * send. */
 1080         uint32_t sctps_windowprobed;    /* total number of window probes sent */
 1081         uint32_t sctps_lowlevelerr;     /* total times an output error causes
 1082                                          * us to clamp down on next user send. */
 1083         uint32_t sctps_lowlevelerrusr;  /* total times sctp_senderrors were
 1084                                          * caused from a user send from a user
 1085                                          * invoked send not a sack response */
 1086         uint32_t sctps_datadropchklmt;  /* Number of in data drops due to
 1087                                          * chunk limit reached */
 1088         uint32_t sctps_datadroprwnd;    /* Number of in data drops due to rwnd
 1089                                          * limit reached */
 1090         uint32_t sctps_ecnereducedcwnd; /* Number of times a ECN reduced the
 1091                                          * cwnd */
 1092         uint32_t sctps_vtagexpress;     /* Used express lookup via vtag */
 1093         uint32_t sctps_vtagbogus;       /* Collision in express lookup. */
 1094         uint32_t sctps_primary_randry;  /* Number of times the sender ran dry
 1095                                          * of user data on primary */
 1096         uint32_t sctps_cmt_randry;      /* Same for above */
 1097         uint32_t sctps_slowpath_sack;   /* Sacks the slow way */
 1098         uint32_t sctps_wu_sacks_sent;   /* Window Update only sacks sent */
 1099         uint32_t sctps_sends_with_flags;        /* number of sends with
 1100                                                  * sinfo_flags !=0 */
 1101         uint32_t sctps_sends_with_unord;        /* number of unordered sends */
 1102         uint32_t sctps_sends_with_eof;  /* number of sends with EOF flag set */
 1103         uint32_t sctps_sends_with_abort;        /* number of sends with ABORT
 1104                                                  * flag set */
 1105         uint32_t sctps_protocol_drain_calls;    /* number of times protocol
 1106                                                  * drain called */
 1107         uint32_t sctps_protocol_drains_done;    /* number of times we did a
 1108                                                  * protocol drain */
 1109         uint32_t sctps_read_peeks;      /* Number of times recv was called
 1110                                          * with peek */
 1111         uint32_t sctps_cached_chk;      /* Number of cached chunks used */
 1112         uint32_t sctps_cached_strmoq;   /* Number of cached stream oq's used */
 1113         uint32_t sctps_left_abandon;    /* Number of unread messages abandoned
 1114                                          * by close */
 1115         uint32_t sctps_send_burst_avoid;        /* Unused */
 1116         uint32_t sctps_send_cwnd_avoid; /* Send cwnd full  avoidance, already
 1117                                          * max burst inflight to net */
 1118         uint32_t sctps_fwdtsn_map_over; /* number of map array over-runs via
 1119                                          * fwd-tsn's */
 1120         uint32_t sctps_queue_upd_ecne;  /* Number of times we queued or
 1121                                          * updated an ECN chunk on send queue */
 1122         uint32_t sctps_reserved[31];    /* Future ABI compat - remove int's
 1123                                          * from here when adding new */
 1124 };
 1125 
 1126 #define SCTP_STAT_INCR(_x) SCTP_STAT_INCR_BY(_x,1)
 1127 #define SCTP_STAT_DECR(_x) SCTP_STAT_DECR_BY(_x,1)
 1128 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 1129 #define SCTP_STAT_INCR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x += _d)
 1130 #define SCTP_STAT_DECR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x -= _d)
 1131 #else
 1132 #define SCTP_STAT_INCR_BY(_x,_d) atomic_add_int(&SCTP_BASE_STAT(_x), _d)
 1133 #define SCTP_STAT_DECR_BY(_x,_d) atomic_subtract_int(&SCTP_BASE_STAT(_x), _d)
 1134 #endif
 1135 /* The following macros are for handling MIB values, */
 1136 #define SCTP_STAT_INCR_COUNTER32(_x) SCTP_STAT_INCR(_x)
 1137 #define SCTP_STAT_INCR_COUNTER64(_x) SCTP_STAT_INCR(_x)
 1138 #define SCTP_STAT_INCR_GAUGE32(_x) SCTP_STAT_INCR(_x)
 1139 #define SCTP_STAT_DECR_COUNTER32(_x) SCTP_STAT_DECR(_x)
 1140 #define SCTP_STAT_DECR_COUNTER64(_x) SCTP_STAT_DECR(_x)
 1141 #define SCTP_STAT_DECR_GAUGE32(_x) SCTP_STAT_DECR(_x)
 1142 
 1143 union sctp_sockstore {
 1144         struct sockaddr_in sin;
 1145         struct sockaddr_in6 sin6;
 1146         struct sockaddr sa;
 1147 };
 1148 
 1149 
 1150 /***********************************/
 1151 /* And something for us old timers */
 1152 /***********************************/
 1153 
 1154 #ifndef ntohll
 1155 #include <sys/endian.h>
 1156 #define ntohll(x) be64toh(x)
 1157 #endif
 1158 
 1159 #ifndef htonll
 1160 #include <sys/endian.h>
 1161 #define htonll(x) htobe64(x)
 1162 #endif
 1163 /***********************************/
 1164 
 1165 
 1166 struct xsctp_inpcb {
 1167         uint32_t last;
 1168         uint32_t flags;
 1169         uint64_t features;
 1170         uint32_t total_sends;
 1171         uint32_t total_recvs;
 1172         uint32_t total_nospaces;
 1173         uint32_t fragmentation_point;
 1174         uint16_t local_port;
 1175         uint16_t qlen_old;
 1176         uint16_t maxqlen_old;
 1177         void *socket;
 1178         uint32_t qlen;
 1179         uint32_t maxqlen;
 1180 #if defined(__LP64__)
 1181         uint32_t extra_padding[27];     /* future */
 1182 #else
 1183         uint32_t extra_padding[28];     /* future */
 1184 #endif
 1185 };
 1186 
 1187 struct xsctp_tcb {
 1188         union sctp_sockstore primary_addr;      /* sctpAssocEntry 5/6 */
 1189         uint32_t last;
 1190         uint32_t heartbeat_interval;    /* sctpAssocEntry 7   */
 1191         uint32_t state;         /* sctpAssocEntry 8   */
 1192         uint32_t in_streams;    /* sctpAssocEntry 9   */
 1193         uint32_t out_streams;   /* sctpAssocEntry 10  */
 1194         uint32_t max_nr_retrans;/* sctpAssocEntry 11  */
 1195         uint32_t primary_process;       /* sctpAssocEntry 12  */
 1196         uint32_t T1_expireries; /* sctpAssocEntry 13  */
 1197         uint32_t T2_expireries; /* sctpAssocEntry 14  */
 1198         uint32_t retransmitted_tsns;    /* sctpAssocEntry 15  */
 1199         uint32_t total_sends;
 1200         uint32_t total_recvs;
 1201         uint32_t local_tag;
 1202         uint32_t remote_tag;
 1203         uint32_t initial_tsn;
 1204         uint32_t highest_tsn;
 1205         uint32_t cumulative_tsn;
 1206         uint32_t cumulative_tsn_ack;
 1207         uint32_t mtu;
 1208         uint32_t refcnt;
 1209         uint16_t local_port;    /* sctpAssocEntry 3   */
 1210         uint16_t remote_port;   /* sctpAssocEntry 4   */
 1211         struct sctp_timeval start_time; /* sctpAssocEntry 16  */
 1212         struct sctp_timeval discontinuity_time; /* sctpAssocEntry 17  */
 1213         uint32_t peers_rwnd;
 1214         sctp_assoc_t assoc_id;  /* sctpAssocEntry 1   */
 1215         uint32_t extra_padding[32];     /* future */
 1216 };
 1217 
 1218 struct xsctp_laddr {
 1219         union sctp_sockstore address;   /* sctpAssocLocalAddrEntry 1/2 */
 1220         uint32_t last;
 1221         struct sctp_timeval start_time; /* sctpAssocLocalAddrEntry 3   */
 1222         uint32_t extra_padding[32];     /* future */
 1223 };
 1224 
 1225 struct xsctp_raddr {
 1226         union sctp_sockstore address;   /* sctpAssocLocalRemEntry 1/2 */
 1227         uint32_t last;
 1228         uint32_t rto;           /* sctpAssocLocalRemEntry 5   */
 1229         uint32_t max_path_rtx;  /* sctpAssocLocalRemEntry 6   */
 1230         uint32_t rtx;           /* sctpAssocLocalRemEntry 7   */
 1231         uint32_t error_counter; /* */
 1232         uint32_t cwnd;          /* */
 1233         uint32_t flight_size;   /* */
 1234         uint32_t mtu;           /* */
 1235         uint8_t active;         /* sctpAssocLocalRemEntry 3   */
 1236         uint8_t confirmed;      /* */
 1237         uint8_t heartbeat_enabled;      /* sctpAssocLocalRemEntry 4   */
 1238         uint8_t potentially_failed;
 1239         struct sctp_timeval start_time; /* sctpAssocLocalRemEntry 8   */
 1240         uint32_t rtt;
 1241         uint32_t heartbeat_interval;
 1242         uint32_t ssthresh;
 1243         uint32_t extra_padding[30];     /* future */
 1244 };
 1245 
 1246 #define SCTP_MAX_LOGGING_SIZE 30000
 1247 #define SCTP_TRACE_PARAMS 6     /* This number MUST be even   */
 1248 
 1249 struct sctp_log_entry {
 1250         uint64_t timestamp;
 1251         uint32_t subsys;
 1252         uint32_t padding;
 1253         uint32_t params[SCTP_TRACE_PARAMS];
 1254 };
 1255 
 1256 struct sctp_log {
 1257         struct sctp_log_entry entry[SCTP_MAX_LOGGING_SIZE];
 1258         uint32_t index;
 1259         uint32_t padding;
 1260 };
 1261 
 1262 /*
 1263  * Kernel defined for sctp_send
 1264  */
 1265 #if defined(_KERNEL) || defined(__Userspace__)
 1266 int
 1267 sctp_lower_sosend(struct socket *so,
 1268     struct sockaddr *addr,
 1269     struct uio *uio,
 1270     struct mbuf *i_pak,
 1271     struct mbuf *control,
 1272     int flags,
 1273     struct sctp_sndrcvinfo *srcv
 1274     ,struct thread *p
 1275 );
 1276 
 1277 int
 1278 sctp_sorecvmsg(struct socket *so,
 1279     struct uio *uio,
 1280     struct mbuf **mp,
 1281     struct sockaddr *from,
 1282     int fromlen,
 1283     int *msg_flags,
 1284     struct sctp_sndrcvinfo *sinfo,
 1285     int filling_sinfo);
 1286 
 1287 #endif
 1288 
 1289 /*
 1290  * API system calls
 1291  */
 1292 #if !(defined(_KERNEL)) && !(defined(__Userspace__))
 1293 
 1294 __BEGIN_DECLS
 1295 int sctp_peeloff(int, sctp_assoc_t);
 1296 int sctp_bindx(int, struct sockaddr *, int, int);
 1297 int sctp_connectx(int, const struct sockaddr *, int, sctp_assoc_t *);
 1298 int sctp_getaddrlen(sa_family_t);
 1299 int sctp_getpaddrs(int, sctp_assoc_t, struct sockaddr **);
 1300 void sctp_freepaddrs(struct sockaddr *);
 1301 int sctp_getladdrs(int, sctp_assoc_t, struct sockaddr **);
 1302 void sctp_freeladdrs(struct sockaddr *);
 1303 int sctp_opt_info(int, sctp_assoc_t, int, void *, socklen_t *);
 1304 
 1305 /* deprecated */
 1306 ssize_t 
 1307 sctp_sendmsg(int, const void *, size_t, const struct sockaddr *,
 1308     socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
 1309 
 1310 /* deprecated */
 1311 ssize_t 
 1312 sctp_send(int, const void *, size_t,
 1313     const struct sctp_sndrcvinfo *, int);
 1314 
 1315 /* deprecated */
 1316 ssize_t 
 1317 sctp_sendx(int, const void *, size_t, struct sockaddr *,
 1318     int, struct sctp_sndrcvinfo *, int);
 1319 
 1320 /* deprecated */
 1321 ssize_t 
 1322 sctp_sendmsgx(int sd, const void *, size_t, struct sockaddr *,
 1323     int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t);
 1324 
 1325 sctp_assoc_t sctp_getassocid(int, struct sockaddr *);
 1326 
 1327 /* deprecated */
 1328 ssize_t 
 1329 sctp_recvmsg(int, void *, size_t, struct sockaddr *, socklen_t *,
 1330     struct sctp_sndrcvinfo *, int *);
 1331 
 1332 ssize_t 
 1333 sctp_sendv(int, const struct iovec *, int, struct sockaddr *,
 1334     int, void *, socklen_t, unsigned int, int);
 1335 
 1336 ssize_t 
 1337 sctp_recvv(int, const struct iovec *, int, struct sockaddr *,
 1338     socklen_t *, void *, socklen_t *, unsigned int *, int *);
 1339 
 1340 __END_DECLS
 1341 
 1342 #endif                          /* !_KERNEL */
 1343 #endif                          /* !__sctp_uio_h__ */

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