The Design and Implementation of the FreeBSD Operating System, Second Edition
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sys/netinet/sctp_constants.h

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    1 /*-
    2  * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions are met:
    6  *
    7  * a) Redistributions of source code must retain the above copyright notice,
    8  *   this list of conditions and the following disclaimer.
    9  *
   10  * b) Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in
   12  *   the documentation and/or other materials provided with the distribution.
   13  *
   14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   15  *    contributors may be used to endorse or promote products derived
   16  *    from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   28  * THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /* $KAME: sctp_constants.h,v 1.17 2005/03/06 16:04:17 itojun Exp $       */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: stable/7/sys/netinet/sctp_constants.h 202715 2010-01-20 19:14:34Z tuexen $");
   35 
   36 #ifndef __sctp_constants_h__
   37 #define __sctp_constants_h__
   38 
   39 /* IANA assigned port number for SCTP over UDP encapsulation */
   40 #define SCTP_OVER_UDP_TUNNELING_PORT 9899
   41 
   42 /* Number of packets to get before sack sent by default */
   43 #define SCTP_DEFAULT_SACK_FREQ 2
   44 
   45 /* Address limit - This variable is calculated
   46  * based on an 65535 byte max ip packet. We take out 100 bytes
   47  * for the cookie, 40 bytes for a v6 header and 32
   48  * bytes for the init structure. A second init structure
   49  * for the init-ack and then finally a third one for the
   50  * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes.
   51  * This leaves 65299 bytes for addresses. We throw out the 299 bytes.
   52  * Now whatever we send in the INIT() we need to allow to get back in the
   53  * INIT-ACK plus all the values from INIT and INIT-ACK
   54  * listed in the cookie. Plus we need some overhead for
   55  * maybe copied parameters in the COOKIE. If we
   56  * allow 1080 addresses, and each side has 1080 V6 addresses
   57  * that will be 21600 bytes. In the INIT-ACK we will
   58  * see the INIT-ACK 21600 + 43200 in the cookie. This leaves
   59  * about 500 bytes slack for misc things in the cookie.
   60  */
   61 #define SCTP_ADDRESS_LIMIT 1080
   62 
   63 /* We need at least 2k of space for us, inits
   64  * larger than that lets abort.
   65  */
   66 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048)
   67 
   68 /* Number of addresses where we just skip the counting */
   69 #define SCTP_COUNT_LIMIT 40
   70 
   71 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000)
   72 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000)
   73 
   74 /* Number of ticks to delay before running
   75  * iterator on an address change.
   76  */
   77 #define SCTP_ADDRESS_TICK_DELAY 2
   78 
   79 #define SCTP_VERSION_STRING "KAME-BSD 1.1"
   80 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */
   81 #define SCTP_AUDIT_SIZE 256
   82 
   83 #define SCTP_USE_THREAD_BASED_ITERATOR 1
   84 
   85 #define SCTP_KTRHEAD_NAME "sctp_iterator"
   86 #define SCTP_KTHREAD_PAGES 0
   87 
   88 
   89 /* If you support Multi-VRF how big to
   90  * make the initial array of VRF's to.
   91  */
   92 #define SCTP_DEFAULT_VRF_SIZE 4
   93 
   94 /* constants for rto calc */
   95 #define sctp_align_safe_nocopy 0
   96 #define sctp_align_unsafe_makecopy 1
   97 
   98 /* JRS - Values defined for the HTCP algorithm */
   99 #define ALPHA_BASE      (1<<7)  /* 1.0 with shift << 7 */
  100 #define BETA_MIN        (1<<6)  /* 0.5 with shift << 7 */
  101 #define BETA_MAX        102     /* 0.8 with shift << 7 */
  102 
  103 /* Places that CWND log can happen from */
  104 #define SCTP_CWND_LOG_FROM_FR   1
  105 #define SCTP_CWND_LOG_FROM_RTX  2
  106 #define SCTP_CWND_LOG_FROM_BRST 3
  107 #define SCTP_CWND_LOG_FROM_SS   4
  108 #define SCTP_CWND_LOG_FROM_CA   5
  109 #define SCTP_CWND_LOG_FROM_SAT  6
  110 #define SCTP_BLOCK_LOG_INTO_BLK 7
  111 #define SCTP_BLOCK_LOG_OUTOF_BLK 8
  112 #define SCTP_BLOCK_LOG_CHECK     9
  113 #define SCTP_STR_LOG_FROM_INTO_STRD 10
  114 #define SCTP_STR_LOG_FROM_IMMED_DEL 11
  115 #define SCTP_STR_LOG_FROM_INSERT_HD 12
  116 #define SCTP_STR_LOG_FROM_INSERT_MD 13
  117 #define SCTP_STR_LOG_FROM_INSERT_TL 14
  118 #define SCTP_STR_LOG_FROM_MARK_TSN  15
  119 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16
  120 #define SCTP_FR_LOG_BIGGEST_TSNS    17
  121 #define SCTP_FR_LOG_STRIKE_TEST     18
  122 #define SCTP_FR_LOG_STRIKE_CHUNK    19
  123 #define SCTP_FR_T3_TIMEOUT          20
  124 #define SCTP_MAP_PREPARE_SLIDE      21
  125 #define SCTP_MAP_SLIDE_FROM         22
  126 #define SCTP_MAP_SLIDE_RESULT       23
  127 #define SCTP_MAP_SLIDE_CLEARED      24
  128 #define SCTP_MAP_SLIDE_NONE         25
  129 #define SCTP_FR_T3_MARK_TIME        26
  130 #define SCTP_FR_T3_MARKED           27
  131 #define SCTP_FR_T3_STOPPED          28
  132 #define SCTP_FR_MARKED              30
  133 #define SCTP_CWND_LOG_NOADV_SS      31
  134 #define SCTP_CWND_LOG_NOADV_CA      32
  135 #define SCTP_MAX_BURST_APPLIED      33
  136 #define SCTP_MAX_IFP_APPLIED        34
  137 #define SCTP_MAX_BURST_ERROR_STOP   35
  138 #define SCTP_INCREASE_PEER_RWND     36
  139 #define SCTP_DECREASE_PEER_RWND     37
  140 #define SCTP_SET_PEER_RWND_VIA_SACK 38
  141 #define SCTP_LOG_MBCNT_INCREASE     39
  142 #define SCTP_LOG_MBCNT_DECREASE     40
  143 #define SCTP_LOG_MBCNT_CHKSET       41
  144 #define SCTP_LOG_NEW_SACK           42
  145 #define SCTP_LOG_TSN_ACKED          43
  146 #define SCTP_LOG_TSN_REVOKED        44
  147 #define SCTP_LOG_LOCK_TCB           45
  148 #define SCTP_LOG_LOCK_INP           46
  149 #define SCTP_LOG_LOCK_SOCK          47
  150 #define SCTP_LOG_LOCK_SOCKBUF_R     48
  151 #define SCTP_LOG_LOCK_SOCKBUF_S     49
  152 #define SCTP_LOG_LOCK_CREATE        50
  153 #define SCTP_LOG_INITIAL_RTT        51
  154 #define SCTP_LOG_RTTVAR             52
  155 #define SCTP_LOG_SBALLOC            53
  156 #define SCTP_LOG_SBFREE             54
  157 #define SCTP_LOG_SBRESULT           55
  158 #define SCTP_FR_DUPED               56
  159 #define SCTP_FR_MARKED_EARLY        57
  160 #define SCTP_FR_CWND_REPORT         58
  161 #define SCTP_FR_CWND_REPORT_START   59
  162 #define SCTP_FR_CWND_REPORT_STOP    60
  163 #define SCTP_CWND_LOG_FROM_SEND     61
  164 #define SCTP_CWND_INITIALIZATION    62
  165 #define SCTP_CWND_LOG_FROM_T3       63
  166 #define SCTP_CWND_LOG_FROM_SACK     64
  167 #define SCTP_CWND_LOG_NO_CUMACK     65
  168 #define SCTP_CWND_LOG_FROM_RESEND   66
  169 #define SCTP_FR_LOG_CHECK_STRIKE    67
  170 #define SCTP_SEND_NOW_COMPLETES     68
  171 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69
  172 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS  70
  173 #define SCTP_LOG_FREE_SENT             71
  174 #define SCTP_NAGLE_APPLIED          72
  175 #define SCTP_NAGLE_SKIPPED          73
  176 #define SCTP_WAKESND_FROM_SACK      74
  177 #define SCTP_WAKESND_FROM_FWDTSN    75
  178 #define SCTP_NOWAKE_FROM_SACK       76
  179 #define SCTP_CWNDLOG_PRESEND        77
  180 #define SCTP_CWNDLOG_ENDSEND        78
  181 #define SCTP_AT_END_OF_SACK         79
  182 #define SCTP_REASON_FOR_SC          80
  183 #define SCTP_BLOCK_LOG_INTO_BLKA    81
  184 #define SCTP_ENTER_USER_RECV        82
  185 #define SCTP_USER_RECV_SACKS        83
  186 #define SCTP_SORECV_BLOCKSA         84
  187 #define SCTP_SORECV_BLOCKSB         85
  188 #define SCTP_SORECV_DONE            86
  189 #define SCTP_SACK_RWND_UPDATE       87
  190 #define SCTP_SORECV_ENTER           88
  191 #define SCTP_SORECV_ENTERPL         89
  192 #define SCTP_MBUF_INPUT             90
  193 #define SCTP_MBUF_IALLOC            91
  194 #define SCTP_MBUF_IFREE             92
  195 #define SCTP_MBUF_ICOPY             93
  196 #define SCTP_MBUF_SPLIT             94
  197 #define SCTP_SORCV_FREECTL          95
  198 #define SCTP_SORCV_DOESCPY          96
  199 #define SCTP_SORCV_DOESLCK          97
  200 #define SCTP_SORCV_DOESADJ          98
  201 #define SCTP_SORCV_BOTWHILE         99
  202 #define SCTP_SORCV_PASSBF          100
  203 #define SCTP_SORCV_ADJD            101
  204 #define SCTP_UNKNOWN_MAX           102
  205 #define SCTP_RANDY_STUFF           103
  206 #define SCTP_RANDY_STUFF1          104
  207 #define SCTP_STRMOUT_LOG_ASSIGN    105
  208 #define SCTP_STRMOUT_LOG_SEND      106
  209 #define SCTP_FLIGHT_LOG_DOWN_CA    107
  210 #define SCTP_FLIGHT_LOG_UP         108
  211 #define SCTP_FLIGHT_LOG_DOWN_GAP   109
  212 #define SCTP_FLIGHT_LOG_DOWN_RSND  110
  213 #define SCTP_FLIGHT_LOG_UP_RSND    111
  214 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO    112
  215 #define SCTP_FLIGHT_LOG_DOWN_WP    113
  216 #define SCTP_FLIGHT_LOG_UP_REVOKE  114
  217 #define SCTP_FLIGHT_LOG_DOWN_PDRP  115
  218 #define SCTP_FLIGHT_LOG_DOWN_PMTU  116
  219 #define SCTP_SACK_LOG_NORMAL       117
  220 #define SCTP_SACK_LOG_EXPRESS      118
  221 #define SCTP_MAP_TSN_ENTERS        119
  222 #define SCTP_THRESHOLD_CLEAR       120
  223 #define SCTP_THRESHOLD_INCR        121
  224 
  225 #define SCTP_LOG_MAX_TYPES 122
  226 /*
  227  * To turn on various logging, you must first enable 'options KTR' and
  228  * you might want to bump the entires 'options KTR_ENTRIES=80000'.
  229  * To get something to log you define one of the logging defines.
  230  * (see LINT).
  231  *
  232  * This gets the compile in place, but you still need to turn the
  233  * logging flag on too in the sysctl (see in sctp.h).
  234  */
  235 
  236 #define SCTP_LOG_EVENT_UNKNOWN 0
  237 #define SCTP_LOG_EVENT_CWND  1
  238 #define SCTP_LOG_EVENT_BLOCK 2
  239 #define SCTP_LOG_EVENT_STRM  3
  240 #define SCTP_LOG_EVENT_FR    4
  241 #define SCTP_LOG_EVENT_MAP   5
  242 #define SCTP_LOG_EVENT_MAXBURST 6
  243 #define SCTP_LOG_EVENT_RWND  7
  244 #define SCTP_LOG_EVENT_MBCNT 8
  245 #define SCTP_LOG_EVENT_SACK  9
  246 #define SCTP_LOG_LOCK_EVENT 10
  247 #define SCTP_LOG_EVENT_RTT  11
  248 #define SCTP_LOG_EVENT_SB   12
  249 #define SCTP_LOG_EVENT_NAGLE 13
  250 #define SCTP_LOG_EVENT_WAKE 14
  251 #define SCTP_LOG_MISC_EVENT 15
  252 #define SCTP_LOG_EVENT_CLOSE 16
  253 #define SCTP_LOG_EVENT_MBUF 17
  254 #define SCTP_LOG_CHUNK_PROC 18
  255 #define SCTP_LOG_ERROR_RET  19
  256 
  257 #define SCTP_LOG_MAX_EVENT 20
  258 
  259 #define SCTP_LOCK_UNKNOWN 2
  260 
  261 
  262 /* number of associations by default for zone allocation */
  263 #define SCTP_MAX_NUM_OF_ASOC    40000
  264 /* how many addresses per assoc remote and local */
  265 #define SCTP_SCALE_FOR_ADDR     2
  266 
  267 /* default AUTO_ASCONF mode enable(1)/disable(0) value (sysctl) */
  268 #if defined (__APPLE__) && !defined(SCTP_APPLE_AUTO_ASCONF)
  269 #define SCTP_DEFAULT_AUTO_ASCONF        0
  270 #else
  271 #define SCTP_DEFAULT_AUTO_ASCONF        1
  272 #endif
  273 
  274 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */
  275 #define SCTP_DEFAULT_MULTIPLE_ASCONFS   0
  276 
  277 /* default MOBILITY_BASE mode enable(1)/disable(0) value (sysctl) */
  278 #if defined (__APPLE__) && !defined(SCTP_APPLE_MOBILITY_BASE)
  279 #define SCTP_DEFAULT_MOBILITY_BASE      0
  280 #else
  281 #define SCTP_DEFAULT_MOBILITY_BASE      0
  282 #endif
  283 
  284 /* default MOBILITY_FASTHANDOFF mode enable(1)/disable(0) value (sysctl) */
  285 #if defined (__APPLE__) && !defined(SCTP_APPLE_MOBILITY_FASTHANDOFF)
  286 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF       0
  287 #else
  288 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF       0
  289 #endif
  290 
  291 /*
  292  * Theshold for rwnd updates, we have to read (sb_hiwat >>
  293  * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a
  294  * window update sack. When we look, we compare the last rwnd we sent vs the
  295  * current rwnd. It too must be greater than this value. Using 3 divdes the
  296  * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need
  297  * to read 8k. This seems about right.. I hope :-D.. we do set a
  298  * min of a MTU on it so if the rwnd is real small we will insist
  299  * on a full MTU of 1500 bytes.
  300  */
  301 #define SCTP_RWND_HIWAT_SHIFT 3
  302 
  303 /* How much of the rwnd must the
  304  * message be taking up to start partial delivery.
  305  * We calculate this by shifing the hi_water (recv_win)
  306  * left the following .. set to 1, when a message holds
  307  * 1/2 the rwnd. If we set it to 2 when a message holds
  308  * 1/4 the rwnd...etc..
  309  */
  310 
  311 #define SCTP_PARTIAL_DELIVERY_SHIFT 1
  312 
  313 /* Minimum number of bytes read by user before we
  314  * condsider doing a rwnd update
  315  */
  316 
  317 /*
  318  * default HMAC for cookies, etc... use one of the AUTH HMAC id's
  319  * SCTP_HMAC is the HMAC_ID to use
  320  * SCTP_SIGNATURE_SIZE is the digest length
  321  */
  322 #define SCTP_HMAC               SCTP_AUTH_HMAC_ID_SHA1
  323 #define SCTP_SIGNATURE_SIZE     SCTP_AUTH_DIGEST_LEN_SHA1
  324 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE
  325 
  326 /* DEFINE HERE WHAT CRC YOU WANT TO USE */
  327 #define SCTP_USECRC_RFC2960  1
  328 /* #define SCTP_USECRC_FLETCHER 1 */
  329 /* #define SCTP_USECRC_SSHCRC32 1 */
  330 /* #define SCTP_USECRC_FASTCRC32 1 */
  331 /* #define SCTP_USECRC_CRC32 1 */
  332 /* #define SCTP_USECRC_TCP32 1 */
  333 /* #define SCTP_USECRC_CRC16SMAL 1 */
  334 /* #define SCTP_USECRC_CRC16 1 */
  335 /* #define SCTP_USECRC_MODADLER 1 */
  336 
  337 #ifndef SCTP_ADLER32_BASE
  338 #define SCTP_ADLER32_BASE 65521
  339 #endif
  340 
  341 /*
  342  * the SCTP protocol signature this includes the version number encoded in
  343  * the last 4 bits of the signature.
  344  */
  345 #define PROTO_SIGNATURE_A       0x30000000
  346 #define SCTP_VERSION_NUMBER     0x3
  347 
  348 #define MAX_TSN 0xffffffff
  349 #define MAX_SEQ 0xffff
  350 
  351 /* how many executions every N tick's */
  352 #define SCTP_ITERATOR_MAX_AT_ONCE 20
  353 
  354 /* number of clock ticks between iterator executions */
  355 #define SCTP_ITERATOR_TICKS 1
  356 
  357 /*
  358  * option: If you comment out the following you will receive the old behavior
  359  * of obeying cwnd for the fast retransmit algorithm. With this defined a FR
  360  * happens right away with-out waiting for the flightsize to drop below the
  361  * cwnd value (which is reduced by the FR to 1/2 the inflight packets).
  362  */
  363 #define SCTP_IGNORE_CWND_ON_FR 1
  364 
  365 /*
  366  * Adds implementors guide behavior to only use newest highest update in SACK
  367  * gap ack's to figure out if you need to stroke a chunk for FR.
  368  */
  369 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1
  370 
  371 /* default max I can burst out after a fast retransmit */
  372 #define SCTP_DEF_MAX_BURST 4
  373 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */
  374 #define SCTP_FIRST_MBUF_RESV 68
  375 /* Packet transmit states in the sent field */
  376 #define SCTP_DATAGRAM_UNSENT            0
  377 #define SCTP_DATAGRAM_SENT              1
  378 #define SCTP_DATAGRAM_RESEND1           2       /* not used (in code, but may
  379                                                  * hit this value) */
  380 #define SCTP_DATAGRAM_RESEND2           3       /* not used (in code, but may
  381                                                  * hit this value) */
  382 #define SCTP_DATAGRAM_RESEND            4
  383 #define SCTP_DATAGRAM_ACKED             10010
  384 /* EY
  385  * If a tsn is nr-gapped, its first tagged as NR_MARKED and then NR_ACKED
  386  * When yet another nr-sack is received, if a particular TSN's sent tag
  387  * is observed to be NR_ACKED after gap-ack info is processed, this implies
  388  * that particular TSN is reneged
  389 */
  390 #define SCTP_DATAGRAM_NR_ACKED          10020
  391 #define SCTP_DATAGRAM_NR_MARKED         20005
  392 #define SCTP_DATAGRAM_MARKED            20010
  393 #define SCTP_FORWARD_TSN_SKIP           30010
  394 
  395 /* chunk output send from locations */
  396 #define SCTP_OUTPUT_FROM_USR_SEND       0
  397 #define SCTP_OUTPUT_FROM_T3             1
  398 #define SCTP_OUTPUT_FROM_INPUT_ERROR    2
  399 #define SCTP_OUTPUT_FROM_CONTROL_PROC   3
  400 #define SCTP_OUTPUT_FROM_SACK_TMR       4
  401 #define SCTP_OUTPUT_FROM_SHUT_TMR       5
  402 #define SCTP_OUTPUT_FROM_HB_TMR         6
  403 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR   7
  404 #define SCTP_OUTPUT_FROM_ASCONF_TMR     8
  405 #define SCTP_OUTPUT_FROM_STRRST_TMR     9
  406 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR  10
  407 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR   11
  408 #define SCTP_OUTPUT_FROM_STRRST_REQ     12
  409 #define SCTP_OUTPUT_FROM_USR_RCVD       13
  410 #define SCTP_OUTPUT_FROM_COOKIE_ACK     14
  411 #define SCTP_OUTPUT_FROM_DRAIN          15
  412 #define SCTP_OUTPUT_FROM_CLOSING        16
  413 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */
  414 
  415 /* align to 32-bit sizes */
  416 #define SCTP_SIZE32(x)  ((((x)+3) >> 2) << 2)
  417 
  418 #define IS_SCTP_CONTROL(a) ((a)->chunk_type != SCTP_DATA)
  419 #define IS_SCTP_DATA(a) ((a)->chunk_type == SCTP_DATA)
  420 
  421 
  422 /* SCTP parameter types */
  423 /*************0x0000 series*************/
  424 #define SCTP_HEARTBEAT_INFO             0x0001
  425 #define SCTP_IPV4_ADDRESS               0x0005
  426 #define SCTP_IPV6_ADDRESS               0x0006
  427 #define SCTP_STATE_COOKIE               0x0007
  428 #define SCTP_UNRECOG_PARAM              0x0008
  429 #define SCTP_COOKIE_PRESERVE            0x0009
  430 #define SCTP_HOSTNAME_ADDRESS           0x000b
  431 #define SCTP_SUPPORTED_ADDRTYPE         0x000c
  432 
  433 /* draft-ietf-stewart-strreset-xxx */
  434 #define SCTP_STR_RESET_OUT_REQUEST      0x000d
  435 #define SCTP_STR_RESET_IN_REQUEST       0x000e
  436 #define SCTP_STR_RESET_TSN_REQUEST      0x000f
  437 #define SCTP_STR_RESET_RESPONSE         0x0010
  438 
  439 #define SCTP_MAX_RESET_PARAMS 2
  440 #define SCTP_STREAM_RESET_TSN_DELTA    0x1000
  441 
  442 /*************0x4000 series*************/
  443 
  444 /*************0x8000 series*************/
  445 #define SCTP_ECN_CAPABLE                0x8000
  446 /* ECN Nonce: draft-ladha-sctp-ecn-nonce */
  447 #define SCTP_ECN_NONCE_SUPPORTED        0x8001
  448 /* draft-ietf-tsvwg-auth-xxx */
  449 #define SCTP_RANDOM                     0x8002
  450 #define SCTP_CHUNK_LIST                 0x8003
  451 #define SCTP_HMAC_LIST                  0x8004
  452 /*
  453  * draft-ietf-tsvwg-addip-sctp-xx param=0x8008  len=0xNNNN Byte | Byte | Byte
  454  * | Byte Byte | Byte ...
  455  *
  456  * Where each byte is a chunk type extension supported. For example, to support
  457  * all chunks one would have (in hex):
  458  *
  459  * 80 01 00 09 C0 C1 80 81 82 00 00 00
  460  *
  461  * Has the parameter. C0 = PR-SCTP    (RFC3758) C1, 80 = ASCONF (addip draft) 81
  462  * = Packet Drop 82 = Stream Reset 83 = Authentication
  463  */
  464 #define SCTP_SUPPORTED_CHUNK_EXT    0x8008
  465 
  466 /*************0xC000 series*************/
  467 #define SCTP_PRSCTP_SUPPORTED           0xc000
  468 /* draft-ietf-tsvwg-addip-sctp */
  469 #define SCTP_ADD_IP_ADDRESS             0xc001
  470 #define SCTP_DEL_IP_ADDRESS             0xc002
  471 #define SCTP_ERROR_CAUSE_IND            0xc003
  472 #define SCTP_SET_PRIM_ADDR              0xc004
  473 #define SCTP_SUCCESS_REPORT             0xc005
  474 #define SCTP_ULP_ADAPTATION             0xc006
  475 /* behave-nat-draft */
  476 #define SCTP_HAS_NAT_SUPPORT            0xc007
  477 #define SCTP_NAT_VTAGS                  0xc008
  478 
  479 /* Notification error codes */
  480 #define SCTP_NOTIFY_DATAGRAM_UNSENT     0x0001
  481 #define SCTP_NOTIFY_DATAGRAM_SENT       0x0002
  482 #define SCTP_FAILED_THRESHOLD           0x0004
  483 #define SCTP_HEARTBEAT_SUCCESS          0x0008
  484 #define SCTP_RESPONSE_TO_USER_REQ       0x0010
  485 #define SCTP_INTERNAL_ERROR             0x0020
  486 #define SCTP_SHUTDOWN_GUARD_EXPIRES     0x0040
  487 #define SCTP_RECEIVED_SACK              0x0080
  488 #define SCTP_PEER_FAULTY                0x0100
  489 #define SCTP_ICMP_REFUSED               0x0200
  490 
  491 /* bits for TOS field */
  492 #define SCTP_ECT0_BIT           0x02
  493 #define SCTP_ECT1_BIT           0x01
  494 #define SCTP_CE_BITS            0x03
  495 
  496 /* below turns off above */
  497 #define SCTP_FLEXIBLE_ADDRESS   0x20
  498 #define SCTP_NO_HEARTBEAT       0x40
  499 
  500 /* mask to get sticky */
  501 #define SCTP_STICKY_OPTIONS_MASK        0x0c
  502 
  503 
  504 /*
  505  * SCTP states for internal state machine XXX (should match "user" values)
  506  */
  507 #define SCTP_STATE_EMPTY                0x0000
  508 #define SCTP_STATE_INUSE                0x0001
  509 #define SCTP_STATE_COOKIE_WAIT          0x0002
  510 #define SCTP_STATE_COOKIE_ECHOED        0x0004
  511 #define SCTP_STATE_OPEN                 0x0008
  512 #define SCTP_STATE_SHUTDOWN_SENT        0x0010
  513 #define SCTP_STATE_SHUTDOWN_RECEIVED    0x0020
  514 #define SCTP_STATE_SHUTDOWN_ACK_SENT    0x0040
  515 #define SCTP_STATE_SHUTDOWN_PENDING     0x0080
  516 #define SCTP_STATE_CLOSED_SOCKET        0x0100
  517 #define SCTP_STATE_ABOUT_TO_BE_FREED    0x0200
  518 #define SCTP_STATE_PARTIAL_MSG_LEFT     0x0400
  519 #define SCTP_STATE_WAS_ABORTED          0x0800
  520 #define SCTP_STATE_MASK                 0x007f
  521 
  522 #define SCTP_GET_STATE(asoc)    ((asoc)->state & SCTP_STATE_MASK)
  523 #define SCTP_SET_STATE(asoc, newstate)  ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) |  newstate)
  524 #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate)
  525 #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate)
  526 
  527 /* SCTP reachability state for each address */
  528 #define SCTP_ADDR_REACHABLE             0x001
  529 #define SCTP_ADDR_NOT_REACHABLE         0x002
  530 #define SCTP_ADDR_NOHB                  0x004
  531 #define SCTP_ADDR_BEING_DELETED         0x008
  532 #define SCTP_ADDR_NOT_IN_ASSOC          0x010
  533 #define SCTP_ADDR_WAS_PRIMARY           0x020
  534 #define SCTP_ADDR_SWITCH_PRIMARY        0x040
  535 #define SCTP_ADDR_OUT_OF_SCOPE          0x080
  536 #define SCTP_ADDR_DOUBLE_SWITCH         0x100
  537 #define SCTP_ADDR_UNCONFIRMED           0x200
  538 #define SCTP_ADDR_REQ_PRIMARY           0x400
  539 /* JRS 5/13/07 - Added potentially failed state for CMT PF */
  540 #define SCTP_ADDR_PF            0x800
  541 #define SCTP_REACHABLE_MASK             0x203
  542 
  543 /* bound address types (e.g. valid address types to allow) */
  544 #define SCTP_BOUND_V6           0x01
  545 #define SCTP_BOUND_V4           0x02
  546 
  547 /*
  548  * what is the default number of mbufs in a chain I allow before switching to
  549  * a cluster
  550  */
  551 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5
  552 
  553 /* How long a cookie lives in milli-seconds */
  554 #define SCTP_DEFAULT_COOKIE_LIFE        60000
  555 
  556 /* resource limit of streams */
  557 #define MAX_SCTP_STREAMS        2048
  558 
  559 /* Maximum the mapping array will  grow to (TSN mapping array) */
  560 #define SCTP_MAPPING_ARRAY      512
  561 
  562 /* size of the inital malloc on the mapping array */
  563 #define SCTP_INITIAL_MAPPING_ARRAY  16
  564 /* how much we grow the mapping array each call */
  565 #define SCTP_MAPPING_ARRAY_INCR     32
  566 /* EY 05/13/08 - nr_sack version of the previous 3 constants */
  567 /* Maximum the nr mapping array will  grow to (TSN mapping array) */
  568 #define SCTP_NR_MAPPING_ARRAY   512
  569 /* size of the inital malloc on the nr mapping array */
  570 #define SCTP_INITIAL_NR_MAPPING_ARRAY  16
  571 /* how much we grow the nr mapping array each call */
  572 #define SCTP_NR_MAPPING_ARRAY_INCR     32
  573 /*
  574  * Here we define the timer types used by the implementation as arguments in
  575  * the set/get timer type calls.
  576  */
  577 #define SCTP_TIMER_INIT         0
  578 #define SCTP_TIMER_RECV         1
  579 #define SCTP_TIMER_SEND         2
  580 #define SCTP_TIMER_HEARTBEAT    3
  581 #define SCTP_TIMER_PMTU         4
  582 #define SCTP_TIMER_MAXSHUTDOWN  5
  583 #define SCTP_TIMER_SIGNATURE    6
  584 /*
  585  * number of timer types in the base SCTP structure used in the set/get and
  586  * has the base default.
  587  */
  588 #define SCTP_NUM_TMRS   7
  589 
  590 /* timer types */
  591 #define SCTP_TIMER_TYPE_NONE            0
  592 #define SCTP_TIMER_TYPE_SEND            1
  593 #define SCTP_TIMER_TYPE_INIT            2
  594 #define SCTP_TIMER_TYPE_RECV            3
  595 #define SCTP_TIMER_TYPE_SHUTDOWN        4
  596 #define SCTP_TIMER_TYPE_HEARTBEAT       5
  597 #define SCTP_TIMER_TYPE_COOKIE          6
  598 #define SCTP_TIMER_TYPE_NEWCOOKIE       7
  599 #define SCTP_TIMER_TYPE_PATHMTURAISE    8
  600 #define SCTP_TIMER_TYPE_SHUTDOWNACK     9
  601 #define SCTP_TIMER_TYPE_ASCONF          10
  602 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD   11
  603 #define SCTP_TIMER_TYPE_AUTOCLOSE       12
  604 #define SCTP_TIMER_TYPE_EVENTWAKE       13
  605 #define SCTP_TIMER_TYPE_STRRESET        14
  606 #define SCTP_TIMER_TYPE_INPKILL         15
  607 #define SCTP_TIMER_TYPE_ITERATOR        16
  608 #define SCTP_TIMER_TYPE_EARLYFR         17
  609 #define SCTP_TIMER_TYPE_ASOCKILL        18
  610 #define SCTP_TIMER_TYPE_ADDR_WQ         19
  611 #define SCTP_TIMER_TYPE_ZERO_COPY       20
  612 #define SCTP_TIMER_TYPE_ZCOPY_SENDQ     21
  613 #define SCTP_TIMER_TYPE_PRIM_DELETED    22
  614 /* add new timers here - and increment LAST */
  615 #define SCTP_TIMER_TYPE_LAST            23
  616 
  617 #define SCTP_IS_TIMER_TYPE_VALID(t)     (((t) > SCTP_TIMER_TYPE_NONE) && \
  618                                          ((t) < SCTP_TIMER_TYPE_LAST))
  619 
  620 
  621 
  622 /*
  623  * Number of ticks before the soxwakeup() event that is delayed is sent AFTER
  624  * the accept() call
  625  */
  626 
  627 /*
  628  * Of course we really don't collect stale cookies, being folks of decerning
  629  * taste. However we do count them, if we get too many before the association
  630  * comes up.. we give up. Below is the constant that dictates when we give it
  631  * up...this is a implemenation dependent treatment. In ours we do not ask
  632  * for a extension of time, but just retry this many times...
  633  */
  634 
  635 /* max number of TSN's dup'd that I will hold */
  636 #define SCTP_MAX_DUP_TSNS       20
  637 
  638 /*
  639  * Here we define the types used when setting the retry amounts.
  640  */
  641 /* constants for type of set */
  642 
  643 /* Maximum TSN's we will summarize in a drop report */
  644 
  645 /* How many drop re-attempts we make on  INIT/COOKIE-ECHO */
  646 #define SCTP_RETRY_DROPPED_THRESH 4
  647 
  648 /*
  649  * And the max we will keep a history of in the tcb which MUST be lower than
  650  * 256.
  651  */
  652 
  653 /*
  654  * Here we define the default timers and the default number of attemts we
  655  * make for each respective side (send/init).
  656  */
  657 
  658 /*
  659  * Maxmium number of chunks a single association can have on it. Note that
  660  * this is a squishy number since the count can run over this if the user
  661  * sends a large message down .. the fragmented chunks don't count until
  662  * AFTER the message is on queue.. it would be the next send that blocks
  663  * things. This number will get tuned up at boot in the sctp_init and use the
  664  * number of clusters as a base. This way high bandwidth environments will
  665  * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks
  666  */
  667 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512
  668 
  669 
  670 /* The conversion from time to ticks and vice versa is done by rounding
  671  * upwards. This way we can test in the code the time to be positive and
  672  * know that this corresponds to a positive number of ticks.
  673  */
  674 #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000))
  675 #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz))
  676 
  677 #define SEC_TO_TICKS(x) ((x) * hz)
  678 #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz)
  679 
  680 /*
  681  * Basically the minimum amount of time before I do a early FR. Making this
  682  * value to low will cause duplicate retransmissions.
  683  */
  684 #define SCTP_MINFR_MSEC_TIMER 250
  685 /* The floor this value is allowed to fall to when starting a timer. */
  686 #define SCTP_MINFR_MSEC_FLOOR 20
  687 
  688 /* init timer def = 1 sec */
  689 #define SCTP_INIT_SEC   1
  690 
  691 /* send timer def = 1 seconds */
  692 #define SCTP_SEND_SEC   1
  693 
  694 /* recv timer def = 200ms  */
  695 #define SCTP_RECV_MSEC  200
  696 
  697 /* 30 seconds + RTO (in ms) */
  698 #define SCTP_HB_DEFAULT_MSEC    30000
  699 
  700 /* Max time I will wait for Shutdown to complete */
  701 #define SCTP_DEF_MAX_SHUTDOWN_SEC 180
  702 
  703 
  704 /*
  705  * This is how long a secret lives, NOT how long a cookie lives how many
  706  * ticks the current secret will live.
  707  */
  708 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600
  709 
  710 #define SCTP_RTO_UPPER_BOUND    (60000) /* 60 sec in ms */
  711 #define SCTP_RTO_UPPER_BOUND_SEC 60     /* for the init timer */
  712 #define SCTP_RTO_LOWER_BOUND    (1000)  /* 1 sec in ms */
  713 #define SCTP_RTO_INITIAL        (3000)  /* 3 sec in ms */
  714 
  715 
  716 #define SCTP_INP_KILL_TIMEOUT 20/* number of ms to retry kill of inpcb */
  717 #define SCTP_ASOC_KILL_TIMEOUT 10       /* number of ms to retry kill of inpcb */
  718 
  719 #define SCTP_DEF_MAX_INIT       8
  720 #define SCTP_DEF_MAX_SEND       10
  721 #define SCTP_DEF_MAX_PATH_RTX   5
  722 
  723 #define SCTP_DEF_PMTU_RAISE_SEC 600     /* 10 min between raise attempts */
  724 
  725 
  726 /* How many streams I request initally by default */
  727 #define SCTP_OSTREAM_INITIAL 10
  728 
  729 /*
  730  * How many smallest_mtu's need to increase before a window update sack is
  731  * sent (should be a power of 2).
  732  */
  733 /* Send window update (incr * this > hiwat). Should be a power of 2 */
  734 #define SCTP_MINIMAL_RWND               (4096)  /* minimal rwnd */
  735 
  736 #define SCTP_ADDRMAX            24
  737 
  738 /* SCTP DEBUG Switch parameters */
  739 #define SCTP_DEBUG_TIMER1       0x00000001
  740 #define SCTP_DEBUG_TIMER2       0x00000002      /* unused */
  741 #define SCTP_DEBUG_TIMER3       0x00000004      /* unused */
  742 #define SCTP_DEBUG_TIMER4       0x00000008
  743 #define SCTP_DEBUG_OUTPUT1      0x00000010
  744 #define SCTP_DEBUG_OUTPUT2      0x00000020
  745 #define SCTP_DEBUG_OUTPUT3      0x00000040
  746 #define SCTP_DEBUG_OUTPUT4      0x00000080
  747 #define SCTP_DEBUG_UTIL1        0x00000100
  748 #define SCTP_DEBUG_UTIL2        0x00000200      /* unused */
  749 #define SCTP_DEBUG_AUTH1        0x00000400
  750 #define SCTP_DEBUG_AUTH2        0x00000800      /* unused */
  751 #define SCTP_DEBUG_INPUT1       0x00001000
  752 #define SCTP_DEBUG_INPUT2       0x00002000
  753 #define SCTP_DEBUG_INPUT3       0x00004000
  754 #define SCTP_DEBUG_INPUT4       0x00008000      /* unused */
  755 #define SCTP_DEBUG_ASCONF1      0x00010000
  756 #define SCTP_DEBUG_ASCONF2      0x00020000
  757 #define SCTP_DEBUG_OUTPUT5      0x00040000      /* unused */
  758 #define SCTP_DEBUG_XXX          0x00080000      /* unused */
  759 #define SCTP_DEBUG_PCB1         0x00100000
  760 #define SCTP_DEBUG_PCB2         0x00200000      /* unused */
  761 #define SCTP_DEBUG_PCB3         0x00400000
  762 #define SCTP_DEBUG_PCB4         0x00800000
  763 #define SCTP_DEBUG_INDATA1      0x01000000
  764 #define SCTP_DEBUG_INDATA2      0x02000000      /* unused */
  765 #define SCTP_DEBUG_INDATA3      0x04000000      /* unused */
  766 #define SCTP_DEBUG_INDATA4      0x08000000      /* unused */
  767 #define SCTP_DEBUG_USRREQ1      0x10000000      /* unused */
  768 #define SCTP_DEBUG_USRREQ2      0x20000000      /* unused */
  769 #define SCTP_DEBUG_PEEL1        0x40000000
  770 #define SCTP_DEBUG_XXXXX        0x80000000      /* unused */
  771 #define SCTP_DEBUG_ALL          0x7ff3ffff
  772 #define SCTP_DEBUG_NOISY        0x00040000
  773 
  774 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */
  775 #define SCTP_SWS_SENDER_DEF     1420
  776 
  777 /*
  778  * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1
  779  * would be hiwat/2 etc.
  780  */
  781 /* What receiver needs to see in sockbuf or we tell peer its 1 */
  782 #define SCTP_SWS_RECEIVER_DEF   3000
  783 
  784 #define SCTP_INITIAL_CWND 4380
  785 
  786 #define SCTP_DEFAULT_MTU 1500   /* emegency default MTU */
  787 /* amount peer is obligated to have in rwnd or I will abort */
  788 #define SCTP_MIN_RWND   1500
  789 
  790 #define SCTP_DEFAULT_MAXSEGMENT 65535
  791 
  792 #define SCTP_CHUNK_BUFFER_SIZE  512
  793 #define SCTP_PARAM_BUFFER_SIZE  512
  794 
  795 /* small chunk store for looking at chunk_list in auth */
  796 #define SCTP_SMALL_CHUNK_STORE 260
  797 
  798 #define SCTP_DEFAULT_MINSEGMENT 512     /* MTU size ... if no mtu disc */
  799 #define SCTP_HOW_MANY_SECRETS   2       /* how many secrets I keep */
  800 
  801 #define SCTP_NUMBER_OF_SECRETS  8       /* or 8 * 4 = 32 octets */
  802 #define SCTP_SECRET_SIZE        32      /* number of octets in a 256 bits */
  803 
  804 
  805 /*
  806  * SCTP upper layer notifications
  807  */
  808 #define SCTP_NOTIFY_ASSOC_UP                     1
  809 #define SCTP_NOTIFY_ASSOC_DOWN                   2
  810 #define SCTP_NOTIFY_INTERFACE_DOWN               3
  811 #define SCTP_NOTIFY_INTERFACE_UP                 4
  812 #define SCTP_NOTIFY_DG_FAIL                      5
  813 #define SCTP_NOTIFY_STRDATA_ERR                  6
  814 #define SCTP_NOTIFY_ASSOC_ABORTED                7
  815 #define SCTP_NOTIFY_PEER_OPENED_STREAM           8
  816 #define SCTP_NOTIFY_STREAM_OPENED_OK             9
  817 #define SCTP_NOTIFY_ASSOC_RESTART               10
  818 #define SCTP_NOTIFY_HB_RESP                     11
  819 #define SCTP_NOTIFY_ASCONF_SUCCESS              12
  820 #define SCTP_NOTIFY_ASCONF_FAILED               13
  821 #define SCTP_NOTIFY_PEER_SHUTDOWN               14
  822 #define SCTP_NOTIFY_ASCONF_ADD_IP               15
  823 #define SCTP_NOTIFY_ASCONF_DELETE_IP            16
  824 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY          17
  825 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 18
  826 #define SCTP_NOTIFY_INTERFACE_CONFIRMED         20
  827 #define SCTP_NOTIFY_STR_RESET_RECV              21
  828 #define SCTP_NOTIFY_STR_RESET_SEND              22
  829 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT        23
  830 #define SCTP_NOTIFY_STR_RESET_FAILED_IN         24
  831 #define SCTP_NOTIFY_AUTH_NEW_KEY                25
  832 #define SCTP_NOTIFY_AUTH_FREE_KEY               26
  833 #define SCTP_NOTIFY_SPECIAL_SP_FAIL             27
  834 #define SCTP_NOTIFY_NO_PEER_AUTH                28
  835 #define SCTP_NOTIFY_SENDER_DRY                  29
  836 #define SCTP_NOTIFY_MAX                         29
  837 
  838 /* This is the value for messages that are NOT completely
  839  * copied down where we will start to split the message.
  840  * So, with our default, we split only if the piece we
  841  * want to take will fill up a full MTU (assuming
  842  * a 1500 byte MTU).
  843  */
  844 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904
  845 
  846 /* ABORT CODES and other tell-tale location
  847  * codes are generated by adding the below
  848  * to the instance id.
  849  */
  850 
  851 /* File defines */
  852 #define SCTP_FROM_SCTP_INPUT   0x10000000
  853 #define SCTP_FROM_SCTP_PCB     0x20000000
  854 #define SCTP_FROM_SCTP_INDATA  0x30000000
  855 #define SCTP_FROM_SCTP_TIMER   0x40000000
  856 #define SCTP_FROM_SCTP_USRREQ  0x50000000
  857 #define SCTP_FROM_SCTPUTIL     0x60000000
  858 #define SCTP_FROM_SCTP6_USRREQ 0x70000000
  859 #define SCTP_FROM_SCTP_ASCONF  0x80000000
  860 #define SCTP_FROM_SCTP_OUTPUT  0x90000000
  861 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000
  862 #define SCTP_FROM_SCTP_PANDA   0xb0000000
  863 #define SCTP_FROM_SCTP_SYSCTL  0xc0000000
  864 
  865 /* Location ID's */
  866 #define SCTP_LOC_1  0x00000001
  867 #define SCTP_LOC_2  0x00000002
  868 #define SCTP_LOC_3  0x00000003
  869 #define SCTP_LOC_4  0x00000004
  870 #define SCTP_LOC_5  0x00000005
  871 #define SCTP_LOC_6  0x00000006
  872 #define SCTP_LOC_7  0x00000007
  873 #define SCTP_LOC_8  0x00000008
  874 #define SCTP_LOC_9  0x00000009
  875 #define SCTP_LOC_10 0x0000000a
  876 #define SCTP_LOC_11 0x0000000b
  877 #define SCTP_LOC_12 0x0000000c
  878 #define SCTP_LOC_13 0x0000000d
  879 #define SCTP_LOC_14 0x0000000e
  880 #define SCTP_LOC_15 0x0000000f
  881 #define SCTP_LOC_16 0x00000010
  882 #define SCTP_LOC_17 0x00000011
  883 #define SCTP_LOC_18 0x00000012
  884 #define SCTP_LOC_19 0x00000013
  885 #define SCTP_LOC_20 0x00000014
  886 #define SCTP_LOC_21 0x00000015
  887 #define SCTP_LOC_22 0x00000016
  888 #define SCTP_LOC_23 0x00000017
  889 #define SCTP_LOC_24 0x00000018
  890 #define SCTP_LOC_25 0x00000019
  891 #define SCTP_LOC_26 0x0000001a
  892 #define SCTP_LOC_27 0x0000001b
  893 #define SCTP_LOC_28 0x0000001c
  894 #define SCTP_LOC_29 0x0000001d
  895 #define SCTP_LOC_30 0x0000001e
  896 #define SCTP_LOC_31 0x0000001f
  897 #define SCTP_LOC_32 0x00000020
  898 #define SCTP_LOC_33 0x00000021
  899 
  900 
  901 /* Free assoc codes */
  902 #define SCTP_NORMAL_PROC      0
  903 #define SCTP_PCBFREE_NOFORCE  1
  904 #define SCTP_PCBFREE_FORCE    2
  905 
  906 /* From codes for adding addresses */
  907 #define SCTP_ADDR_IS_CONFIRMED 8
  908 #define SCTP_ADDR_DYNAMIC_ADDED 6
  909 #define SCTP_IN_COOKIE_PROC 100
  910 #define SCTP_ALLOC_ASOC  1
  911 #define SCTP_LOAD_ADDR_2 2
  912 #define SCTP_LOAD_ADDR_3 3
  913 #define SCTP_LOAD_ADDR_4 4
  914 #define SCTP_LOAD_ADDR_5 5
  915 
  916 #define SCTP_DONOT_SETSCOPE 0
  917 #define SCTP_DO_SETSCOPE 1
  918 
  919 
  920 /* This value determines the default for when
  921  * we try to add more on the send queue., if
  922  * there is room. This prevents us from cycling
  923  * into the copy_resume routine to often if
  924  * we have not got enough space to add a decent
  925  * enough size message. Note that if we have enough
  926  * space to complete the message copy we will always
  927  * add to the message, no matter what the size. Its
  928  * only when we reach the point that we have some left
  929  * to add, there is only room for part of it that we
  930  * will use this threshold. Its also a sysctl.
  931  */
  932 #define SCTP_DEFAULT_ADD_MORE 1452
  933 
  934 #ifndef SCTP_PCBHASHSIZE
  935 /* default number of association hash buckets in each endpoint */
  936 #define SCTP_PCBHASHSIZE 256
  937 #endif
  938 #ifndef SCTP_TCBHASHSIZE
  939 #define SCTP_TCBHASHSIZE 1024
  940 #endif
  941 
  942 #ifndef SCTP_CHUNKQUEUE_SCALE
  943 #define SCTP_CHUNKQUEUE_SCALE 10
  944 #endif
  945 
  946 /* clock variance is 1 ms */
  947 #define SCTP_CLOCK_GRANULARITY  1
  948 #define IP_HDR_SIZE 40          /* we use the size of a IP6 header here this
  949                                  * detracts a small amount for ipv4 but it
  950                                  * simplifies the ipv6 addition */
  951 
  952 /* Argument magic number for sctp_inpcb_free() */
  953 
  954 /* third argument */
  955 #define SCTP_CALLED_DIRECTLY_NOCMPSET     0
  956 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE  1
  957 
  958 /* second argument */
  959 #define SCTP_FREE_SHOULD_USE_ABORT          1
  960 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0
  961 
  962 #ifndef IPPROTO_SCTP
  963 #define IPPROTO_SCTP 132        /* the Official IANA number :-) */
  964 #endif                          /* !IPPROTO_SCTP */
  965 
  966 #define SCTP_MAX_DATA_BUNDLING          256
  967 
  968 /* modular comparison */
  969 /* True if a > b (mod = M) */
  970 #define compare_with_wrap(a, b, M) (((a > b) && ((a - b) < ((M >> 1) + 1))) || \
  971               ((b > a) && ((b - a) > ((M >> 1) + 1))))
  972 
  973 
  974 /* Mapping array manipulation routines */
  975 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01)
  976 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07))))
  977 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff))
  978 
  979 
  980 #define SCTP_RETRAN_DONE -1
  981 #define SCTP_RETRAN_EXIT -2
  982 
  983 /*
  984  * This value defines the number of vtag block time wait entry's per list
  985  * element.  Each entry will take 2 4 byte ints (and of course the overhead
  986  * of the next pointer as well). Using 15 as an example will yield * ((8 *
  987  * 15) + 8) or 128 bytes of overhead for each timewait block that gets
  988  * initialized. Increasing it to 31 would yeild 256 bytes per block.
  989  */
  990 #define SCTP_NUMBER_IN_VTAG_BLOCK 15
  991 /*
  992  * If we use the STACK option, we have an array of this size head pointers.
  993  * This array is mod'd the with the size to find which bucket and then all
  994  * entries must be searched to see if the tag is in timed wait. If so we
  995  * reject it.
  996  */
  997 #define SCTP_STACK_VTAG_HASH_SIZE   32
  998 
  999 
 1000 /*
 1001  * If we use the per-endpoint model than we do not have a hash table of
 1002  * entries but instead have a single head pointer and we must crawl through
 1003  * the entire list.
 1004  */
 1005 
 1006 /*
 1007  * Number of seconds of time wait for a vtag.
 1008  */
 1009 #define SCTP_TIME_WAIT 60
 1010 
 1011 /* The system retains a cache of free chunks such to
 1012  * cut down on calls the memory allocation system. There
 1013  * is a per association limit of free items and a overall
 1014  * system limit. If either one gets hit then the resource
 1015  * stops being cached.
 1016  */
 1017 
 1018 #define SCTP_DEF_ASOC_RESC_LIMIT 10
 1019 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000
 1020 
 1021 /*-
 1022  * defines for socket lock states.
 1023  * Used by __APPLE__ and SCTP_SO_LOCK_TESTING
 1024  */
 1025 #define SCTP_SO_LOCKED          1
 1026 #define SCTP_SO_NOT_LOCKED      0
 1027 
 1028 
 1029 #define SCTP_HOLDS_LOCK 1
 1030 #define SCTP_NOT_LOCKED 0
 1031 
 1032 /*-
 1033  * For address locks, do we hold the lock?
 1034  */
 1035 #define SCTP_ADDR_LOCKED 1
 1036 #define SCTP_ADDR_NOT_LOCKED 0
 1037 
 1038 #define IN4_ISPRIVATE_ADDRESS(a) \
 1039    ((((uint8_t *)&(a)->s_addr)[0] == 10) || \
 1040     ((((uint8_t *)&(a)->s_addr)[0] == 172) && \
 1041      (((uint8_t *)&(a)->s_addr)[1] >= 16) && \
 1042      (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \
 1043     ((((uint8_t *)&(a)->s_addr)[0] == 192) && \
 1044      (((uint8_t *)&(a)->s_addr)[1] == 168)))
 1045 
 1046 #define IN4_ISLOOPBACK_ADDRESS(a) \
 1047     ((((uint8_t *)&(a)->s_addr)[0] == 127) && \
 1048      (((uint8_t *)&(a)->s_addr)[1] == 0) && \
 1049      (((uint8_t *)&(a)->s_addr)[2] == 0) && \
 1050      (((uint8_t *)&(a)->s_addr)[3] == 1))
 1051 
 1052 
 1053 #if defined(_KERNEL)
 1054 
 1055 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x))
 1056 #define SCTP_GETPTIME_TIMEVAL(x)        (microuptime(x))
 1057 #endif
 1058 /*#if defined(__FreeBSD__) || defined(__APPLE__)*/
 1059 /*#define SCTP_GETTIME_TIMEVAL(x) { \*/
 1060 /*      (x)->tv_sec = ticks / 1000; \*/
 1061 /*      (x)->tv_usec = (ticks % 1000) * 1000; \*/
 1062 /*}*/
 1063 
 1064 /*#else*/
 1065 /*#define SCTP_GETTIME_TIMEVAL(x)       (microtime(x))*/
 1066 /*#endif                                 __FreeBSD__ */
 1067 
 1068 #if defined(_KERNEL) || defined(__Userspace__)
 1069 #define sctp_sowwakeup(inp, so) \
 1070 do { \
 1071         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1072                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 1073         } else { \
 1074                 sowwakeup(so); \
 1075         } \
 1076 } while (0)
 1077 
 1078 #define sctp_sowwakeup_locked(inp, so) \
 1079 do { \
 1080         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1081                 SOCKBUF_UNLOCK(&((so)->so_snd)); \
 1082                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 1083         } else { \
 1084                 sowwakeup_locked(so); \
 1085         } \
 1086 } while (0)
 1087 
 1088 #define sctp_sorwakeup(inp, so) \
 1089 do { \
 1090         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1091                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 1092         } else { \
 1093                 sorwakeup(so); \
 1094         } \
 1095 } while (0)
 1096 
 1097 #define sctp_sorwakeup_locked(inp, so) \
 1098 do { \
 1099         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1100                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 1101                 SOCKBUF_UNLOCK(&((so)->so_rcv)); \
 1102         } else { \
 1103                 sorwakeup_locked(so); \
 1104         } \
 1105 } while (0)
 1106 
 1107 #endif                          /* _KERNEL || __Userspace__ */
 1108 #endif

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