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) 2001-2007, 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("$FreeBSD$");
   35 
   36 #ifndef __sctp_constants_h__
   37 #define __sctp_constants_h__
   38 
   39 /* Number of packets to get before sack sent by default */
   40 #define SCTP_DEFAULT_SACK_FREQ 2
   41 
   42 /* Address limit - This variable is calculated
   43  * based on an 65535 byte max ip packet. We take out 100 bytes
   44  * for the cookie, 40 bytes for a v6 header and 32
   45  * bytes for the init structure. A second init structure
   46  * for the init-ack and then finally a third one for the
   47  * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes.
   48  * This leaves 65299 bytes for addresses. We throw out the 299 bytes.
   49  * Now whatever we send in the INIT() we need to allow to get back in the
   50  * INIT-ACK plus all the values from INIT and INIT-ACK
   51  * listed in the cookie. Plus we need some overhead for
   52  * maybe copied parameters in the COOKIE. If we
   53  * allow 1080 addresses, and each side has 1080 V6 addresses
   54  * that will be 21600 bytes. In the INIT-ACK we will
   55  * see the INIT-ACK 21600 + 43200 in the cookie. This leaves
   56  * about 500 bytes slack for misc things in the cookie.
   57  */
   58 #define SCTP_ADDRESS_LIMIT 1080
   59 
   60 /* We need at least 2k of space for us, inits
   61  * larger than that lets abort.
   62  */
   63 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048)
   64 
   65 /* Number of addresses where we just skip the counting */
   66 #define SCTP_COUNT_LIMIT 40
   67 
   68 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000)
   69 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000)
   70 
   71 /* Number of ticks to delay before running
   72  * iterator on an address change.
   73  */
   74 #define SCTP_ADDRESS_TICK_DELAY 2
   75 
   76 #define SCTP_VERSION_STRING "KAME-BSD 1.1"
   77 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */
   78 #define SCTP_AUDIT_SIZE 256
   79 
   80 #define SCTP_USE_THREAD_BASED_ITERATOR 1
   81 
   82 #define SCTP_KTRHEAD_NAME "sctp_iterator"
   83 #define SCTP_KTHREAD_PAGES 2
   84 
   85 
   86 /* If you support Multi-VRF how big to
   87  * make the initial array of VRF's to.
   88  */
   89 #define SCTP_DEFAULT_VRF_SIZE 4
   90 
   91 /* constants for rto calc */
   92 #define sctp_align_safe_nocopy 0
   93 #define sctp_align_unsafe_makecopy 1
   94 
   95 /* JRS - Values defined for the HTCP algorithm */
   96 #define ALPHA_BASE      (1<<7)  /* 1.0 with shift << 7 */
   97 #define BETA_MIN        (1<<6)  /* 0.5 with shift << 7 */
   98 #define BETA_MAX        102     /* 0.8 with shift << 7 */
   99 
  100 /* Places that CWND log can happen from */
  101 #define SCTP_CWND_LOG_FROM_FR   1
  102 #define SCTP_CWND_LOG_FROM_RTX  2
  103 #define SCTP_CWND_LOG_FROM_BRST 3
  104 #define SCTP_CWND_LOG_FROM_SS   4
  105 #define SCTP_CWND_LOG_FROM_CA   5
  106 #define SCTP_CWND_LOG_FROM_SAT  6
  107 #define SCTP_BLOCK_LOG_INTO_BLK 7
  108 #define SCTP_BLOCK_LOG_OUTOF_BLK 8
  109 #define SCTP_BLOCK_LOG_CHECK     9
  110 #define SCTP_STR_LOG_FROM_INTO_STRD 10
  111 #define SCTP_STR_LOG_FROM_IMMED_DEL 11
  112 #define SCTP_STR_LOG_FROM_INSERT_HD 12
  113 #define SCTP_STR_LOG_FROM_INSERT_MD 13
  114 #define SCTP_STR_LOG_FROM_INSERT_TL 14
  115 #define SCTP_STR_LOG_FROM_MARK_TSN  15
  116 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16
  117 #define SCTP_FR_LOG_BIGGEST_TSNS    17
  118 #define SCTP_FR_LOG_STRIKE_TEST     18
  119 #define SCTP_FR_LOG_STRIKE_CHUNK    19
  120 #define SCTP_FR_T3_TIMEOUT          20
  121 #define SCTP_MAP_PREPARE_SLIDE      21
  122 #define SCTP_MAP_SLIDE_FROM         22
  123 #define SCTP_MAP_SLIDE_RESULT       23
  124 #define SCTP_MAP_SLIDE_CLEARED      24
  125 #define SCTP_MAP_SLIDE_NONE         25
  126 #define SCTP_FR_T3_MARK_TIME        26
  127 #define SCTP_FR_T3_MARKED           27
  128 #define SCTP_FR_T3_STOPPED          28
  129 #define SCTP_FR_MARKED              30
  130 #define SCTP_CWND_LOG_NOADV_SS      31
  131 #define SCTP_CWND_LOG_NOADV_CA      32
  132 #define SCTP_MAX_BURST_APPLIED      33
  133 #define SCTP_MAX_IFP_APPLIED        34
  134 #define SCTP_MAX_BURST_ERROR_STOP   35
  135 #define SCTP_INCREASE_PEER_RWND     36
  136 #define SCTP_DECREASE_PEER_RWND     37
  137 #define SCTP_SET_PEER_RWND_VIA_SACK 38
  138 #define SCTP_LOG_MBCNT_INCREASE     39
  139 #define SCTP_LOG_MBCNT_DECREASE     40
  140 #define SCTP_LOG_MBCNT_CHKSET       41
  141 #define SCTP_LOG_NEW_SACK           42
  142 #define SCTP_LOG_TSN_ACKED          43
  143 #define SCTP_LOG_TSN_REVOKED        44
  144 #define SCTP_LOG_LOCK_TCB           45
  145 #define SCTP_LOG_LOCK_INP           46
  146 #define SCTP_LOG_LOCK_SOCK          47
  147 #define SCTP_LOG_LOCK_SOCKBUF_R     48
  148 #define SCTP_LOG_LOCK_SOCKBUF_S     49
  149 #define SCTP_LOG_LOCK_CREATE        50
  150 #define SCTP_LOG_INITIAL_RTT        51
  151 #define SCTP_LOG_RTTVAR             52
  152 #define SCTP_LOG_SBALLOC            53
  153 #define SCTP_LOG_SBFREE             54
  154 #define SCTP_LOG_SBRESULT           55
  155 #define SCTP_FR_DUPED               56
  156 #define SCTP_FR_MARKED_EARLY        57
  157 #define SCTP_FR_CWND_REPORT         58
  158 #define SCTP_FR_CWND_REPORT_START   59
  159 #define SCTP_FR_CWND_REPORT_STOP    60
  160 #define SCTP_CWND_LOG_FROM_SEND     61
  161 #define SCTP_CWND_INITIALIZATION    62
  162 #define SCTP_CWND_LOG_FROM_T3       63
  163 #define SCTP_CWND_LOG_FROM_SACK     64
  164 #define SCTP_CWND_LOG_NO_CUMACK     65
  165 #define SCTP_CWND_LOG_FROM_RESEND   66
  166 #define SCTP_FR_LOG_CHECK_STRIKE    67
  167 #define SCTP_SEND_NOW_COMPLETES     68
  168 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69
  169 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS  70
  170 #define SCTP_LOG_FREE_SENT             71
  171 #define SCTP_NAGLE_APPLIED          72
  172 #define SCTP_NAGLE_SKIPPED          73
  173 #define SCTP_WAKESND_FROM_SACK      74
  174 #define SCTP_WAKESND_FROM_FWDTSN    75
  175 #define SCTP_NOWAKE_FROM_SACK       76
  176 #define SCTP_CWNDLOG_PRESEND        77
  177 #define SCTP_CWNDLOG_ENDSEND        78
  178 #define SCTP_AT_END_OF_SACK         79
  179 #define SCTP_REASON_FOR_SC          80
  180 #define SCTP_BLOCK_LOG_INTO_BLKA    81
  181 #define SCTP_ENTER_USER_RECV        82
  182 #define SCTP_USER_RECV_SACKS        83
  183 #define SCTP_SORECV_BLOCKSA         84
  184 #define SCTP_SORECV_BLOCKSB         85
  185 #define SCTP_SORECV_DONE            86
  186 #define SCTP_SACK_RWND_UPDATE       87
  187 #define SCTP_SORECV_ENTER           88
  188 #define SCTP_SORECV_ENTERPL         89
  189 #define SCTP_MBUF_INPUT             90
  190 #define SCTP_MBUF_IALLOC            91
  191 #define SCTP_MBUF_IFREE             92
  192 #define SCTP_MBUF_ICOPY             93
  193 #define SCTP_SORCV_FREECTL          94
  194 #define SCTP_SORCV_DOESCPY          95
  195 #define SCTP_SORCV_DOESLCK          96
  196 #define SCTP_SORCV_DOESADJ          97
  197 #define SCTP_SORCV_BOTWHILE         98
  198 #define SCTP_SORCV_PASSBF           99
  199 #define SCTP_SORCV_ADJD            100
  200 #define SCTP_UNKNOWN_MAX           101
  201 #define SCTP_RANDY_STUFF           102
  202 #define SCTP_RANDY_STUFF1          103
  203 #define SCTP_STRMOUT_LOG_ASSIGN    104
  204 #define SCTP_STRMOUT_LOG_SEND      105
  205 #define SCTP_FLIGHT_LOG_DOWN_CA    106
  206 #define SCTP_FLIGHT_LOG_UP         107
  207 #define SCTP_FLIGHT_LOG_DOWN_GAP   108
  208 #define SCTP_FLIGHT_LOG_DOWN_RSND  109
  209 #define SCTP_FLIGHT_LOG_UP_RSND    110
  210 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO    111
  211 #define SCTP_FLIGHT_LOG_DOWN_WP    112
  212 #define SCTP_FLIGHT_LOG_UP_REVOKE  113
  213 #define SCTP_FLIGHT_LOG_DOWN_PDRP  114
  214 #define SCTP_FLIGHT_LOG_DOWN_PMTU  115
  215 #define SCTP_SACK_LOG_NORMAL       116
  216 #define SCTP_SACK_LOG_EXPRESS      117
  217 #define SCTP_MAP_TSN_ENTERS        118
  218 #define SCTP_THRESHOLD_CLEAR       119
  219 #define SCTP_THRESHOLD_INCR        120
  220 
  221 #define SCTP_LOG_MAX_TYPES 121
  222 /*
  223  * To turn on various logging, you must first enable 'options KTR' and
  224  * you might want to bump the entires 'options KTR_ENTRIES=80000'.
  225  * To get something to log you define one of the logging defines.
  226  * (see LINT).
  227  *
  228  * This gets the compile in place, but you still need to turn the
  229  * logging flag on too in the sysctl (see in sctp.h).
  230  */
  231 
  232 #define SCTP_LOG_EVENT_UNKNOWN 0
  233 #define SCTP_LOG_EVENT_CWND  1
  234 #define SCTP_LOG_EVENT_BLOCK 2
  235 #define SCTP_LOG_EVENT_STRM  3
  236 #define SCTP_LOG_EVENT_FR    4
  237 #define SCTP_LOG_EVENT_MAP   5
  238 #define SCTP_LOG_EVENT_MAXBURST 6
  239 #define SCTP_LOG_EVENT_RWND  7
  240 #define SCTP_LOG_EVENT_MBCNT 8
  241 #define SCTP_LOG_EVENT_SACK  9
  242 #define SCTP_LOG_LOCK_EVENT 10
  243 #define SCTP_LOG_EVENT_RTT  11
  244 #define SCTP_LOG_EVENT_SB   12
  245 #define SCTP_LOG_EVENT_NAGLE 13
  246 #define SCTP_LOG_EVENT_WAKE 14
  247 #define SCTP_LOG_MISC_EVENT 15
  248 #define SCTP_LOG_EVENT_CLOSE 16
  249 #define SCTP_LOG_EVENT_MBUF 17
  250 #define SCTP_LOG_CHUNK_PROC 18
  251 #define SCTP_LOG_ERROR_RET  19
  252 
  253 #define SCTP_LOG_MAX_EVENT 20
  254 
  255 #define SCTP_LOCK_UNKNOWN 2
  256 
  257 
  258 /* number of associations by default for zone allocation */
  259 #define SCTP_MAX_NUM_OF_ASOC    40000
  260 /* how many addresses per assoc remote and local */
  261 #define SCTP_SCALE_FOR_ADDR     2
  262 
  263 /* default AUTO_ASCONF mode enable(1)/disable(0) value (sysctl) */
  264 #if defined (__APPLE__) && !defined(SCTP_APPLE_AUTO_ASCONF)
  265 #define SCTP_DEFAULT_AUTO_ASCONF        0
  266 #else
  267 #define SCTP_DEFAULT_AUTO_ASCONF        1
  268 #endif
  269 
  270 /* default MOBILITY_BASE mode enable(1)/disable(0) value (sysctl) */
  271 #if defined (__APPLE__) && !defined(SCTP_APPLE_MOBILITY_BASE)
  272 #define SCTP_DEFAULT_MOBILITY_BASE      0
  273 #else
  274 #define SCTP_DEFAULT_MOBILITY_BASE      0
  275 #endif
  276 
  277 /* default MOBILITY_FASTHANDOFF mode enable(1)/disable(0) value (sysctl) */
  278 #if defined (__APPLE__) && !defined(SCTP_APPLE_MOBILITY_FASTHANDOFF)
  279 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF       0
  280 #else
  281 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF       0
  282 #endif
  283 
  284 /*
  285  * Theshold for rwnd updates, we have to read (sb_hiwat >>
  286  * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a
  287  * window update sack. When we look, we compare the last rwnd we sent vs the
  288  * current rwnd. It too must be greater than this value. Using 3 divdes the
  289  * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need
  290  * to read 8k. This seems about right.. I hope :-D.. we do set a
  291  * min of a MTU on it so if the rwnd is real small we will insist
  292  * on a full MTU of 1500 bytes.
  293  */
  294 #define SCTP_RWND_HIWAT_SHIFT 3
  295 
  296 /* How much of the rwnd must the
  297  * message be taking up to start partial delivery.
  298  * We calculate this by shifing the hi_water (recv_win)
  299  * left the following .. set to 1, when a message holds
  300  * 1/2 the rwnd. If we set it to 2 when a message holds
  301  * 1/4 the rwnd...etc..
  302  */
  303 
  304 #define SCTP_PARTIAL_DELIVERY_SHIFT 1
  305 
  306 /* Minimum number of bytes read by user before we
  307  * condsider doing a rwnd update
  308  */
  309 #define SCTP_MIN_READ_BEFORE_CONSIDERING  3000
  310 
  311 /*
  312  * default HMAC for cookies, etc... use one of the AUTH HMAC id's
  313  * SCTP_HMAC is the HMAC_ID to use
  314  * SCTP_SIGNATURE_SIZE is the digest length
  315  */
  316 #define SCTP_HMAC               SCTP_AUTH_HMAC_ID_SHA1
  317 #define SCTP_SIGNATURE_SIZE     SCTP_AUTH_DIGEST_LEN_SHA1
  318 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE
  319 
  320 /* DEFINE HERE WHAT CRC YOU WANT TO USE */
  321 #define SCTP_USECRC_RFC2960  1
  322 /* #define SCTP_USECRC_FLETCHER 1 */
  323 /* #define SCTP_USECRC_SSHCRC32 1 */
  324 /* #define SCTP_USECRC_FASTCRC32 1 */
  325 /* #define SCTP_USECRC_CRC32 1 */
  326 /* #define SCTP_USECRC_TCP32 1 */
  327 /* #define SCTP_USECRC_CRC16SMAL 1 */
  328 /* #define SCTP_USECRC_CRC16 1 */
  329 /* #define SCTP_USECRC_MODADLER 1 */
  330 
  331 #ifndef SCTP_ADLER32_BASE
  332 #define SCTP_ADLER32_BASE 65521
  333 #endif
  334 
  335 /*
  336  * the SCTP protocol signature this includes the version number encoded in
  337  * the last 4 bits of the signature.
  338  */
  339 #define PROTO_SIGNATURE_A       0x30000000
  340 #define SCTP_VERSION_NUMBER     0x3
  341 
  342 #define MAX_TSN 0xffffffff
  343 #define MAX_SEQ 0xffff
  344 
  345 /* how many executions every N tick's */
  346 #define SCTP_ITERATOR_MAX_AT_ONCE 20
  347 
  348 /* number of clock ticks between iterator executions */
  349 #define SCTP_ITERATOR_TICKS 1
  350 
  351 /*
  352  * option: If you comment out the following you will receive the old behavior
  353  * of obeying cwnd for the fast retransmit algorithm. With this defined a FR
  354  * happens right away with-out waiting for the flightsize to drop below the
  355  * cwnd value (which is reduced by the FR to 1/2 the inflight packets).
  356  */
  357 #define SCTP_IGNORE_CWND_ON_FR 1
  358 
  359 /*
  360  * Adds implementors guide behavior to only use newest highest update in SACK
  361  * gap ack's to figure out if you need to stroke a chunk for FR.
  362  */
  363 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1
  364 
  365 /* default max I can burst out after a fast retransmit */
  366 #define SCTP_DEF_MAX_BURST 4
  367 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */
  368 #define SCTP_FIRST_MBUF_RESV 68
  369 /* Packet transmit states in the sent field */
  370 #define SCTP_DATAGRAM_UNSENT            0
  371 #define SCTP_DATAGRAM_SENT              1
  372 #define SCTP_DATAGRAM_RESEND1           2       /* not used (in code, but may
  373                                                  * hit this value) */
  374 #define SCTP_DATAGRAM_RESEND2           3       /* not used (in code, but may
  375                                                  * hit this value) */
  376 #define SCTP_DATAGRAM_RESEND            4
  377 #define SCTP_DATAGRAM_ACKED             10010
  378 #define SCTP_DATAGRAM_INBOUND           10011
  379 #define SCTP_READY_TO_TRANSMIT          10012
  380 #define SCTP_DATAGRAM_MARKED            20010
  381 #define SCTP_FORWARD_TSN_SKIP           30010
  382 
  383 /* chunk output send from locations */
  384 #define SCTP_OUTPUT_FROM_USR_SEND       0
  385 #define SCTP_OUTPUT_FROM_T3             1
  386 #define SCTP_OUTPUT_FROM_INPUT_ERROR    2
  387 #define SCTP_OUTPUT_FROM_CONTROL_PROC   3
  388 #define SCTP_OUTPUT_FROM_SACK_TMR       4
  389 #define SCTP_OUTPUT_FROM_SHUT_TMR       5
  390 #define SCTP_OUTPUT_FROM_HB_TMR         6
  391 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR   7
  392 #define SCTP_OUTPUT_FROM_ASCONF_TMR     8
  393 #define SCTP_OUTPUT_FROM_STRRST_TMR     9
  394 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR  10
  395 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR   11
  396 #define SCTP_OUTPUT_FROM_STRRST_REQ     12
  397 #define SCTP_OUTPUT_FROM_USR_RCVD       13
  398 #define SCTP_OUTPUT_FROM_COOKIE_ACK     14
  399 #define SCTP_OUTPUT_FROM_DRAIN          15
  400 #define SCTP_OUTPUT_FROM_CLOSING        16
  401 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */
  402 
  403 /* align to 32-bit sizes */
  404 #define SCTP_SIZE32(x)  ((((x)+3) >> 2) << 2)
  405 
  406 #define IS_SCTP_CONTROL(a) ((a)->chunk_type != SCTP_DATA)
  407 #define IS_SCTP_DATA(a) ((a)->chunk_type == SCTP_DATA)
  408 
  409 
  410 /* SCTP parameter types */
  411 /*************0x0000 series*************/
  412 #define SCTP_HEARTBEAT_INFO             0x0001
  413 #define SCTP_IPV4_ADDRESS               0x0005
  414 #define SCTP_IPV6_ADDRESS               0x0006
  415 #define SCTP_STATE_COOKIE               0x0007
  416 #define SCTP_UNRECOG_PARAM              0x0008
  417 #define SCTP_COOKIE_PRESERVE            0x0009
  418 #define SCTP_HOSTNAME_ADDRESS           0x000b
  419 #define SCTP_SUPPORTED_ADDRTYPE         0x000c
  420 
  421 /* draft-ietf-stewart-strreset-xxx */
  422 #define SCTP_STR_RESET_OUT_REQUEST      0x000d
  423 #define SCTP_STR_RESET_IN_REQUEST       0x000e
  424 #define SCTP_STR_RESET_TSN_REQUEST      0x000f
  425 #define SCTP_STR_RESET_RESPONSE         0x0010
  426 
  427 #define SCTP_MAX_RESET_PARAMS 2
  428 #define SCTP_STREAM_RESET_TSN_DELTA    0x1000
  429 
  430 /*************0x4000 series*************/
  431 
  432 /*************0x8000 series*************/
  433 #define SCTP_ECN_CAPABLE                0x8000
  434 /* ECN Nonce: draft-ladha-sctp-ecn-nonce */
  435 #define SCTP_ECN_NONCE_SUPPORTED        0x8001
  436 /* draft-ietf-tsvwg-auth-xxx */
  437 #define SCTP_RANDOM                     0x8002
  438 #define SCTP_CHUNK_LIST                 0x8003
  439 #define SCTP_HMAC_LIST                  0x8004
  440 /*
  441  * draft-ietf-tsvwg-addip-sctp-xx param=0x8008  len=0xNNNN Byte | Byte | Byte
  442  * | Byte Byte | Byte ...
  443  *
  444  * Where each byte is a chunk type extension supported. For example, to support
  445  * all chunks one would have (in hex):
  446  *
  447  * 80 01 00 09 C0 C1 80 81 82 00 00 00
  448  *
  449  * Has the parameter. C0 = PR-SCTP    (RFC3758) C1, 80 = ASCONF (addip draft) 81
  450  * = Packet Drop 82 = Stream Reset 83 = Authentication
  451  */
  452 #define SCTP_SUPPORTED_CHUNK_EXT    0x8008
  453 
  454 /*************0xC000 series*************/
  455 #define SCTP_PRSCTP_SUPPORTED           0xc000
  456 /* draft-ietf-tsvwg-addip-sctp */
  457 #define SCTP_ADD_IP_ADDRESS             0xc001
  458 #define SCTP_DEL_IP_ADDRESS             0xc002
  459 #define SCTP_ERROR_CAUSE_IND            0xc003
  460 #define SCTP_SET_PRIM_ADDR              0xc004
  461 #define SCTP_SUCCESS_REPORT             0xc005
  462 #define SCTP_ULP_ADAPTATION             0xc006
  463 
  464 /* Notification error codes */
  465 #define SCTP_NOTIFY_DATAGRAM_UNSENT     0x0001
  466 #define SCTP_NOTIFY_DATAGRAM_SENT       0x0002
  467 #define SCTP_FAILED_THRESHOLD           0x0004
  468 #define SCTP_HEARTBEAT_SUCCESS          0x0008
  469 #define SCTP_RESPONSE_TO_USER_REQ       0x0010
  470 #define SCTP_INTERNAL_ERROR             0x0020
  471 #define SCTP_SHUTDOWN_GUARD_EXPIRES     0x0040
  472 #define SCTP_RECEIVED_SACK              0x0080
  473 #define SCTP_PEER_FAULTY                0x0100
  474 #define SCTP_ICMP_REFUSED               0x0200
  475 
  476 /* bits for TOS field */
  477 #define SCTP_ECT0_BIT           0x02
  478 #define SCTP_ECT1_BIT           0x01
  479 #define SCTP_CE_BITS            0x03
  480 
  481 /* below turns off above */
  482 #define SCTP_FLEXIBLE_ADDRESS   0x20
  483 #define SCTP_NO_HEARTBEAT       0x40
  484 
  485 /* mask to get sticky */
  486 #define SCTP_STICKY_OPTIONS_MASK        0x0c
  487 
  488 
  489 /*
  490  * SCTP states for internal state machine XXX (should match "user" values)
  491  */
  492 #define SCTP_STATE_EMPTY                0x0000
  493 #define SCTP_STATE_INUSE                0x0001
  494 #define SCTP_STATE_COOKIE_WAIT          0x0002
  495 #define SCTP_STATE_COOKIE_ECHOED        0x0004
  496 #define SCTP_STATE_OPEN                 0x0008
  497 #define SCTP_STATE_SHUTDOWN_SENT        0x0010
  498 #define SCTP_STATE_SHUTDOWN_RECEIVED    0x0020
  499 #define SCTP_STATE_SHUTDOWN_ACK_SENT    0x0040
  500 #define SCTP_STATE_SHUTDOWN_PENDING     0x0080
  501 #define SCTP_STATE_CLOSED_SOCKET        0x0100
  502 #define SCTP_STATE_ABOUT_TO_BE_FREED    0x0200
  503 #define SCTP_STATE_PARTIAL_MSG_LEFT     0x0400
  504 #define SCTP_STATE_WAS_ABORTED          0x0800
  505 #define SCTP_STATE_MASK                 0x007f
  506 
  507 #define SCTP_GET_STATE(asoc)    ((asoc)->state & SCTP_STATE_MASK)
  508 #define SCTP_SET_STATE(asoc, newstate)  ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) |  newstate)
  509 #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate)
  510 #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate)
  511 
  512 /* SCTP reachability state for each address */
  513 #define SCTP_ADDR_REACHABLE             0x001
  514 #define SCTP_ADDR_NOT_REACHABLE         0x002
  515 #define SCTP_ADDR_NOHB                  0x004
  516 #define SCTP_ADDR_BEING_DELETED         0x008
  517 #define SCTP_ADDR_NOT_IN_ASSOC          0x010
  518 #define SCTP_ADDR_WAS_PRIMARY           0x020
  519 #define SCTP_ADDR_SWITCH_PRIMARY        0x040
  520 #define SCTP_ADDR_OUT_OF_SCOPE          0x080
  521 #define SCTP_ADDR_DOUBLE_SWITCH         0x100
  522 #define SCTP_ADDR_UNCONFIRMED           0x200
  523 #define SCTP_ADDR_REQ_PRIMARY           0x400
  524 /* JRS 5/13/07 - Added potentially failed state for CMT PF */
  525 #define SCTP_ADDR_PF            0x800
  526 #define SCTP_REACHABLE_MASK             0x203
  527 
  528 /* bound address types (e.g. valid address types to allow) */
  529 #define SCTP_BOUND_V6           0x01
  530 #define SCTP_BOUND_V4           0x02
  531 
  532 /*
  533  * what is the default number of mbufs in a chain I allow before switching to
  534  * a cluster
  535  */
  536 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5
  537 
  538 /* How long a cookie lives in milli-seconds */
  539 #define SCTP_DEFAULT_COOKIE_LIFE        60000
  540 
  541 /* resource limit of streams */
  542 #define MAX_SCTP_STREAMS        2048
  543 
  544 /* Maximum the mapping array will  grow to (TSN mapping array) */
  545 #define SCTP_MAPPING_ARRAY      512
  546 
  547 /* size of the inital malloc on the mapping array */
  548 #define SCTP_INITIAL_MAPPING_ARRAY  16
  549 /* how much we grow the mapping array each call */
  550 #define SCTP_MAPPING_ARRAY_INCR     32
  551 
  552 /*
  553  * Here we define the timer types used by the implementation as arguments in
  554  * the set/get timer type calls.
  555  */
  556 #define SCTP_TIMER_INIT         0
  557 #define SCTP_TIMER_RECV         1
  558 #define SCTP_TIMER_SEND         2
  559 #define SCTP_TIMER_HEARTBEAT    3
  560 #define SCTP_TIMER_PMTU         4
  561 #define SCTP_TIMER_MAXSHUTDOWN  5
  562 #define SCTP_TIMER_SIGNATURE    6
  563 /*
  564  * number of timer types in the base SCTP structure used in the set/get and
  565  * has the base default.
  566  */
  567 #define SCTP_NUM_TMRS   7
  568 
  569 /* timer types */
  570 #define SCTP_TIMER_TYPE_NONE            0
  571 #define SCTP_TIMER_TYPE_SEND            1
  572 #define SCTP_TIMER_TYPE_INIT            2
  573 #define SCTP_TIMER_TYPE_RECV            3
  574 #define SCTP_TIMER_TYPE_SHUTDOWN        4
  575 #define SCTP_TIMER_TYPE_HEARTBEAT       5
  576 #define SCTP_TIMER_TYPE_COOKIE          6
  577 #define SCTP_TIMER_TYPE_NEWCOOKIE       7
  578 #define SCTP_TIMER_TYPE_PATHMTURAISE    8
  579 #define SCTP_TIMER_TYPE_SHUTDOWNACK     9
  580 #define SCTP_TIMER_TYPE_ASCONF          10
  581 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD   11
  582 #define SCTP_TIMER_TYPE_AUTOCLOSE       12
  583 #define SCTP_TIMER_TYPE_EVENTWAKE       13
  584 #define SCTP_TIMER_TYPE_STRRESET        14
  585 #define SCTP_TIMER_TYPE_INPKILL         15
  586 #define SCTP_TIMER_TYPE_ITERATOR        16
  587 #define SCTP_TIMER_TYPE_EARLYFR         17
  588 #define SCTP_TIMER_TYPE_ASOCKILL        18
  589 #define SCTP_TIMER_TYPE_ADDR_WQ         19
  590 #define SCTP_TIMER_TYPE_ZERO_COPY       20
  591 #define SCTP_TIMER_TYPE_ZCOPY_SENDQ     21
  592 #define SCTP_TIMER_TYPE_PRIM_DELETED    22
  593 /* add new timers here - and increment LAST */
  594 #define SCTP_TIMER_TYPE_LAST            23
  595 
  596 #define SCTP_IS_TIMER_TYPE_VALID(t)     (((t) > SCTP_TIMER_TYPE_NONE) && \
  597                                          ((t) < SCTP_TIMER_TYPE_LAST))
  598 
  599 
  600 
  601 /*
  602  * Number of ticks before the soxwakeup() event that is delayed is sent AFTER
  603  * the accept() call
  604  */
  605 #define SCTP_EVENTWAKEUP_WAIT_TICKS     3000
  606 
  607 /*
  608  * Of course we really don't collect stale cookies, being folks of decerning
  609  * taste. However we do count them, if we get too many before the association
  610  * comes up.. we give up. Below is the constant that dictates when we give it
  611  * up...this is a implemenation dependent treatment. In ours we do not ask
  612  * for a extension of time, but just retry this many times...
  613  */
  614 #define SCTP_MAX_STALE_COOKIES_I_COLLECT 10
  615 
  616 /* max number of TSN's dup'd that I will hold */
  617 #define SCTP_MAX_DUP_TSNS       20
  618 
  619 /*
  620  * Here we define the types used when setting the retry amounts.
  621  */
  622 /* constants for type of set */
  623 #define SCTP_MAXATTEMPT_INIT    2
  624 #define SCTP_MAXATTEMPT_SEND    3
  625 
  626 /* Maximum TSN's we will summarize in a drop report */
  627 #define SCTP_MAX_DROP_REPORT 16
  628 
  629 /* How many drop re-attempts we make on  INIT/COOKIE-ECHO */
  630 #define SCTP_RETRY_DROPPED_THRESH 4
  631 
  632 /*
  633  * And the max we will keep a history of in the tcb which MUST be lower than
  634  * 256.
  635  */
  636 #define SCTP_MAX_DROP_SAVE_REPORT 16
  637 
  638 /*
  639  * Here we define the default timers and the default number of attemts we
  640  * make for each respective side (send/init).
  641  */
  642 
  643 /*
  644  * Maxmium number of chunks a single association can have on it. Note that
  645  * this is a squishy number since the count can run over this if the user
  646  * sends a large message down .. the fragmented chunks don't count until
  647  * AFTER the message is on queue.. it would be the next send that blocks
  648  * things. This number will get tuned up at boot in the sctp_init and use the
  649  * number of clusters as a base. This way high bandwidth environments will
  650  * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks
  651  */
  652 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512
  653 
  654 
  655 /* The conversion from time to ticks and vice versa is done by rounding
  656  * upwards. This way we can test in the code the time to be positive and
  657  * know that this corresponds to a positive number of ticks.
  658  */
  659 #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000))
  660 #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz))
  661 
  662 #define SEC_TO_TICKS(x) ((x) * hz)
  663 #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz)
  664 
  665 /*
  666  * Basically the minimum amount of time before I do a early FR. Making this
  667  * value to low will cause duplicate retransmissions.
  668  */
  669 #define SCTP_MINFR_MSEC_TIMER 250
  670 /* The floor this value is allowed to fall to when starting a timer. */
  671 #define SCTP_MINFR_MSEC_FLOOR 20
  672 
  673 /* init timer def = 1 sec */
  674 #define SCTP_INIT_SEC   1
  675 
  676 /* send timer def = 1 seconds */
  677 #define SCTP_SEND_SEC   1
  678 
  679 /* recv timer def = 200ms  */
  680 #define SCTP_RECV_MSEC  200
  681 
  682 /* 30 seconds + RTO (in ms) */
  683 #define SCTP_HB_DEFAULT_MSEC    30000
  684 
  685 /* Max time I will wait for Shutdown to complete */
  686 #define SCTP_DEF_MAX_SHUTDOWN_SEC 180
  687 
  688 
  689 /*
  690  * This is how long a secret lives, NOT how long a cookie lives how many
  691  * ticks the current secret will live.
  692  */
  693 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600
  694 
  695 #define SCTP_RTO_UPPER_BOUND    (60000) /* 60 sec in ms */
  696 #define SCTP_RTO_UPPER_BOUND_SEC 60     /* for the init timer */
  697 #define SCTP_RTO_LOWER_BOUND    (1000)  /* 1 sec in ms */
  698 #define SCTP_RTO_INITIAL        (3000)  /* 3 sec in ms */
  699 
  700 
  701 #define SCTP_INP_KILL_TIMEOUT 20/* number of ms to retry kill of inpcb */
  702 #define SCTP_ASOC_KILL_TIMEOUT 10       /* number of ms to retry kill of inpcb */
  703 
  704 #define SCTP_DEF_MAX_INIT       8
  705 #define SCTP_DEF_MAX_SEND       10
  706 #define SCTP_DEF_MAX_PATH_RTX   5
  707 
  708 #define SCTP_DEF_PMTU_RAISE_SEC 600     /* 10 min between raise attempts */
  709 #define SCTP_DEF_PMTU_MIN       600
  710 
  711 
  712 #define SCTP_MSEC_IN_A_SEC      1000
  713 #define SCTP_USEC_IN_A_SEC      1000000
  714 #define SCTP_NSEC_IN_A_SEC      1000000000
  715 
  716 #define SCTP_MAX_OUTSTANDING_DG 10000
  717 
  718 /* How many streams I request initally by default */
  719 #define SCTP_OSTREAM_INITIAL 10
  720 
  721 /*
  722  * How many smallest_mtu's need to increase before a window update sack is
  723  * sent (should be a power of 2).
  724  */
  725 #define SCTP_SEG_TO_RWND_UPD 32
  726 /* Send window update (incr * this > hiwat). Should be a power of 2 */
  727 #define SCTP_SCALE_OF_RWND_TO_UPD       4
  728 #define SCTP_MINIMAL_RWND               (4096)  /* minimal rwnd */
  729 
  730 #define SCTP_ADDRMAX            24
  731 
  732 /* SCTP DEBUG Switch parameters */
  733 #define SCTP_DEBUG_TIMER1       0x00000001
  734 #define SCTP_DEBUG_TIMER2       0x00000002      /* unused */
  735 #define SCTP_DEBUG_TIMER3       0x00000004      /* unused */
  736 #define SCTP_DEBUG_TIMER4       0x00000008
  737 #define SCTP_DEBUG_OUTPUT1      0x00000010
  738 #define SCTP_DEBUG_OUTPUT2      0x00000020
  739 #define SCTP_DEBUG_OUTPUT3      0x00000040
  740 #define SCTP_DEBUG_OUTPUT4      0x00000080
  741 #define SCTP_DEBUG_UTIL1        0x00000100
  742 #define SCTP_DEBUG_UTIL2        0x00000200      /* unused */
  743 #define SCTP_DEBUG_AUTH1        0x00000400
  744 #define SCTP_DEBUG_AUTH2        0x00000800      /* unused */
  745 #define SCTP_DEBUG_INPUT1       0x00001000
  746 #define SCTP_DEBUG_INPUT2       0x00002000
  747 #define SCTP_DEBUG_INPUT3       0x00004000
  748 #define SCTP_DEBUG_INPUT4       0x00008000      /* unused */
  749 #define SCTP_DEBUG_ASCONF1      0x00010000
  750 #define SCTP_DEBUG_ASCONF2      0x00020000
  751 #define SCTP_DEBUG_OUTPUT5      0x00040000      /* unused */
  752 #define SCTP_DEBUG_XXX          0x00080000      /* unused */
  753 #define SCTP_DEBUG_PCB1         0x00100000
  754 #define SCTP_DEBUG_PCB2         0x00200000      /* unused */
  755 #define SCTP_DEBUG_PCB3         0x00400000
  756 #define SCTP_DEBUG_PCB4         0x00800000
  757 #define SCTP_DEBUG_INDATA1      0x01000000
  758 #define SCTP_DEBUG_INDATA2      0x02000000      /* unused */
  759 #define SCTP_DEBUG_INDATA3      0x04000000      /* unused */
  760 #define SCTP_DEBUG_INDATA4      0x08000000      /* unused */
  761 #define SCTP_DEBUG_USRREQ1      0x10000000      /* unused */
  762 #define SCTP_DEBUG_USRREQ2      0x20000000      /* unused */
  763 #define SCTP_DEBUG_PEEL1        0x40000000
  764 #define SCTP_DEBUG_XXXXX        0x80000000      /* unused */
  765 #define SCTP_DEBUG_ALL          0x7ff3ffff
  766 #define SCTP_DEBUG_NOISY        0x00040000
  767 
  768 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */
  769 #define SCTP_SWS_SENDER_DEF     1420
  770 
  771 /*
  772  * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1
  773  * would be hiwat/2 etc.
  774  */
  775 /* What receiver needs to see in sockbuf or we tell peer its 1 */
  776 #define SCTP_SWS_RECEIVER_DEF   3000
  777 
  778 #define SCTP_INITIAL_CWND 4380
  779 
  780 #define SCTP_DEFAULT_MTU 1500   /* emegency default MTU */
  781 /* amount peer is obligated to have in rwnd or I will abort */
  782 #define SCTP_MIN_RWND   1500
  783 
  784 #define SCTP_WINDOW_MIN 1500    /* smallest rwnd can be */
  785 #define SCTP_WINDOW_MAX 1048576 /* biggest I can grow rwnd to My playing
  786                                  * around suggests a value greater than 64k
  787                                  * does not do much, I guess via the kernel
  788                                  * limitations on the stream/socket. */
  789 
  790 /* I can handle a 1meg re-assembly */
  791 #define SCTP_DEFAULT_MAXMSGREASM 1048576
  792 
  793 #define SCTP_DEFAULT_MAXSEGMENT 65535
  794 
  795 #define SCTP_CHUNK_BUFFER_SIZE  512
  796 #define SCTP_PARAM_BUFFER_SIZE  512
  797 
  798 /* small chunk store for looking at chunk_list in auth */
  799 #define SCTP_SMALL_CHUNK_STORE 260
  800 
  801 #define SCTP_DEFAULT_MINSEGMENT 512     /* MTU size ... if no mtu disc */
  802 #define SCTP_HOW_MANY_SECRETS   2       /* how many secrets I keep */
  803 
  804 #define SCTP_NUMBER_OF_SECRETS  8       /* or 8 * 4 = 32 octets */
  805 #define SCTP_SECRET_SIZE        32      /* number of octets in a 256 bits */
  806 
  807 
  808 /*
  809  * SCTP upper layer notifications
  810  */
  811 #define SCTP_NOTIFY_ASSOC_UP            1
  812 #define SCTP_NOTIFY_ASSOC_DOWN          2
  813 #define SCTP_NOTIFY_INTERFACE_DOWN      3
  814 #define SCTP_NOTIFY_INTERFACE_UP        4
  815 #define SCTP_NOTIFY_DG_FAIL             5
  816 #define SCTP_NOTIFY_STRDATA_ERR         6
  817 #define SCTP_NOTIFY_ASSOC_ABORTED       7
  818 #define SCTP_NOTIFY_PEER_OPENED_STREAM  8
  819 #define SCTP_NOTIFY_STREAM_OPENED_OK    9
  820 #define SCTP_NOTIFY_ASSOC_RESTART       10
  821 #define SCTP_NOTIFY_HB_RESP             11
  822 #define SCTP_NOTIFY_ASCONF_SUCCESS      12
  823 #define SCTP_NOTIFY_ASCONF_FAILED       13
  824 #define SCTP_NOTIFY_PEER_SHUTDOWN       14
  825 #define SCTP_NOTIFY_ASCONF_ADD_IP       15
  826 #define SCTP_NOTIFY_ASCONF_DELETE_IP    16
  827 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY  17
  828 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 18
  829 #define SCTP_NOTIFY_INTERFACE_CONFIRMED 20
  830 #define SCTP_NOTIFY_STR_RESET_RECV      21
  831 #define SCTP_NOTIFY_STR_RESET_SEND      22
  832 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT 23
  833 #define SCTP_NOTIFY_STR_RESET_FAILED_IN 24
  834 #define SCTP_NOTIFY_AUTH_NEW_KEY        25
  835 #define SCTP_NOTIFY_AUTH_KEY_CONFLICT   26
  836 #define SCTP_NOTIFY_SPECIAL_SP_FAIL     27
  837 #define SCTP_NOTIFY_MAX                 27
  838 
  839 /* This is the value for messages that are NOT completely
  840  * copied down where we will start to split the message.
  841  * So, with our default, we split only if the piece we
  842  * want to take will fill up a full MTU (assuming
  843  * a 1500 byte MTU).
  844  */
  845 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904
  846 
  847 /* ABORT CODES and other tell-tale location
  848  * codes are generated by adding the below
  849  * to the instance id.
  850  */
  851 
  852 /* File defines */
  853 #define SCTP_FROM_SCTP_INPUT   0x10000000
  854 #define SCTP_FROM_SCTP_PCB     0x20000000
  855 #define SCTP_FROM_SCTP_INDATA  0x30000000
  856 #define SCTP_FROM_SCTP_TIMER   0x40000000
  857 #define SCTP_FROM_SCTP_USRREQ  0x50000000
  858 #define SCTP_FROM_SCTPUTIL     0x60000000
  859 #define SCTP_FROM_SCTP6_USRREQ 0x70000000
  860 #define SCTP_FROM_SCTP_ASCONF  0x80000000
  861 #define SCTP_FROM_SCTP_OUTPUT  0x90000000
  862 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000
  863 #define SCTP_FROM_SCTP_PANDA   0xb0000000
  864 #define SCTP_FROM_SCTP_SYSCTL  0xc0000000
  865 
  866 /* Location ID's */
  867 #define SCTP_LOC_1  0x00000001
  868 #define SCTP_LOC_2  0x00000002
  869 #define SCTP_LOC_3  0x00000003
  870 #define SCTP_LOC_4  0x00000004
  871 #define SCTP_LOC_5  0x00000005
  872 #define SCTP_LOC_6  0x00000006
  873 #define SCTP_LOC_7  0x00000007
  874 #define SCTP_LOC_8  0x00000008
  875 #define SCTP_LOC_9  0x00000009
  876 #define SCTP_LOC_10 0x0000000a
  877 #define SCTP_LOC_11 0x0000000b
  878 #define SCTP_LOC_12 0x0000000c
  879 #define SCTP_LOC_13 0x0000000d
  880 #define SCTP_LOC_14 0x0000000e
  881 #define SCTP_LOC_15 0x0000000f
  882 #define SCTP_LOC_16 0x00000010
  883 #define SCTP_LOC_17 0x00000011
  884 #define SCTP_LOC_18 0x00000012
  885 #define SCTP_LOC_19 0x00000013
  886 #define SCTP_LOC_20 0x00000014
  887 #define SCTP_LOC_21 0x00000015
  888 #define SCTP_LOC_22 0x00000016
  889 #define SCTP_LOC_23 0x00000017
  890 #define SCTP_LOC_24 0x00000018
  891 #define SCTP_LOC_25 0x00000019
  892 #define SCTP_LOC_26 0x0000001a
  893 #define SCTP_LOC_27 0x0000001b
  894 #define SCTP_LOC_28 0x0000001c
  895 #define SCTP_LOC_29 0x0000001d
  896 #define SCTP_LOC_30 0x0000001e
  897 #define SCTP_LOC_31 0x0000001f
  898 #define SCTP_LOC_32 0x00000020
  899 #define SCTP_LOC_33 0x00000021
  900 
  901 
  902 /* Free assoc codes */
  903 #define SCTP_NORMAL_PROC      0
  904 #define SCTP_PCBFREE_NOFORCE  1
  905 #define SCTP_PCBFREE_FORCE    2
  906 
  907 /* From codes for adding addresses */
  908 #define SCTP_ADDR_IS_CONFIRMED 8
  909 #define SCTP_ADDR_DYNAMIC_ADDED 6
  910 #define SCTP_IN_COOKIE_PROC 100
  911 #define SCTP_ALLOC_ASOC  1
  912 #define SCTP_LOAD_ADDR_2 2
  913 #define SCTP_LOAD_ADDR_3 3
  914 #define SCTP_LOAD_ADDR_4 4
  915 #define SCTP_LOAD_ADDR_5 5
  916 
  917 #define SCTP_DONOT_SETSCOPE 0
  918 #define SCTP_DO_SETSCOPE 1
  919 
  920 
  921 /* This value determines the default for when
  922  * we try to add more on the send queue., if
  923  * there is room. This prevents us from cycling
  924  * into the copy_resume routine to often if
  925  * we have not got enough space to add a decent
  926  * enough size message. Note that if we have enough
  927  * space to complete the message copy we will always
  928  * add to the message, no matter what the size. Its
  929  * only when we reach the point that we have some left
  930  * to add, there is only room for part of it that we
  931  * will use this threshold. Its also a sysctl.
  932  */
  933 #define SCTP_DEFAULT_ADD_MORE 1452
  934 
  935 #ifndef SCTP_PCBHASHSIZE
  936 /* default number of association hash buckets in each endpoint */
  937 #define SCTP_PCBHASHSIZE 256
  938 #endif
  939 #ifndef SCTP_TCBHASHSIZE
  940 #define SCTP_TCBHASHSIZE 1024
  941 #endif
  942 
  943 #ifndef SCTP_CHUNKQUEUE_SCALE
  944 #define SCTP_CHUNKQUEUE_SCALE 10
  945 #endif
  946 
  947 /* clock variance is 1 ms */
  948 #define SCTP_CLOCK_GRANULARITY  1
  949 #define IP_HDR_SIZE 40          /* we use the size of a IP6 header here this
  950                                  * detracts a small amount for ipv4 but it
  951                                  * simplifies the ipv6 addition */
  952 
  953 /* Argument magic number for sctp_inpcb_free() */
  954 
  955 /* third argument */
  956 #define SCTP_CALLED_DIRECTLY_NOCMPSET     0
  957 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE  1
  958 
  959 /* second argument */
  960 #define SCTP_FREE_SHOULD_USE_ABORT          1
  961 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0
  962 
  963 #ifndef IPPROTO_SCTP
  964 #define IPPROTO_SCTP 132        /* the Official IANA number :-) */
  965 #endif                          /* !IPPROTO_SCTP */
  966 
  967 #define SCTP_MAX_DATA_BUNDLING          256
  968 #define SCTP_MAX_CONTROL_BUNDLING       20
  969 
  970 /* modular comparison */
  971 /* True if a > b (mod = M) */
  972 #define compare_with_wrap(a, b, M) (((a > b) && ((a - b) < ((M >> 1) + 1))) || \
  973               ((b > a) && ((b - a) > ((M >> 1) + 1))))
  974 
  975 
  976 /* Mapping array manipulation routines */
  977 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01)
  978 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07))))
  979 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff))
  980 
  981 
  982 #define SCTP_RETRAN_DONE -1
  983 #define SCTP_RETRAN_EXIT -2
  984 
  985 /*
  986  * This value defines the number of vtag block time wait entry's per list
  987  * element.  Each entry will take 2 4 byte ints (and of course the overhead
  988  * of the next pointer as well). Using 15 as an example will yield * ((8 *
  989  * 15) + 8) or 128 bytes of overhead for each timewait block that gets
  990  * initialized. Increasing it to 31 would yeild 256 bytes per block.
  991  */
  992 #define SCTP_NUMBER_IN_VTAG_BLOCK 15
  993 /*
  994  * If we use the STACK option, we have an array of this size head pointers.
  995  * This array is mod'd the with the size to find which bucket and then all
  996  * entries must be searched to see if the tag is in timed wait. If so we
  997  * reject it.
  998  */
  999 #define SCTP_STACK_VTAG_HASH_SIZE   31
 1000 #define SCTP_STACK_VTAG_HASH_SIZE_A 32
 1001 
 1002 
 1003 /*
 1004  * If we use the per-endpoint model than we do not have a hash table of
 1005  * entries but instead have a single head pointer and we must crawl through
 1006  * the entire list.
 1007  */
 1008 
 1009 /*
 1010  * Number of seconds of time wait for a vtag.
 1011  */
 1012 #define SCTP_TIME_WAIT 60
 1013 
 1014 /* This time wait is the same as the default cookie life
 1015  * since we now enter a tag in every time we send a cookie.
 1016  * We want this shorter to avoid vtag depletion.
 1017  */
 1018 #define SCTP_TIME_WAIT_SHORT 60
 1019 
 1020 /* The system retains a cache of free chunks such to
 1021  * cut down on calls the memory allocation system. There
 1022  * is a per association limit of free items and a overall
 1023  * system limit. If either one gets hit then the resource
 1024  * stops being cached.
 1025  */
 1026 
 1027 #define SCTP_DEF_ASOC_RESC_LIMIT 10
 1028 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000
 1029 
 1030 /*-
 1031  * defines for socket lock states.
 1032  * Used by __APPLE__ and SCTP_SO_LOCK_TESTING
 1033  */
 1034 #define SCTP_SO_LOCKED          1
 1035 #define SCTP_SO_NOT_LOCKED      0
 1036 
 1037 
 1038 #define SCTP_HOLDS_LOCK 1
 1039 #define SCTP_NOT_LOCKED 0
 1040 
 1041 /*-
 1042  * For address locks, do we hold the lock?
 1043  */
 1044 #define SCTP_ADDR_LOCKED 1
 1045 #define SCTP_ADDR_NOT_LOCKED 0
 1046 
 1047 #define IN4_ISPRIVATE_ADDRESS(a) \
 1048    ((((uint8_t *)&(a)->s_addr)[0] == 10) || \
 1049     ((((uint8_t *)&(a)->s_addr)[0] == 172) && \
 1050      (((uint8_t *)&(a)->s_addr)[1] >= 16) && \
 1051      (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \
 1052     ((((uint8_t *)&(a)->s_addr)[0] == 192) && \
 1053      (((uint8_t *)&(a)->s_addr)[1] == 168)))
 1054 
 1055 #define IN4_ISLOOPBACK_ADDRESS(a) \
 1056     ((((uint8_t *)&(a)->s_addr)[0] == 127) && \
 1057      (((uint8_t *)&(a)->s_addr)[1] == 0) && \
 1058      (((uint8_t *)&(a)->s_addr)[2] == 0) && \
 1059      (((uint8_t *)&(a)->s_addr)[3] == 1))
 1060 
 1061 
 1062 #if defined(_KERNEL)
 1063 
 1064 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x))
 1065 #define SCTP_GETPTIME_TIMEVAL(x)        (microuptime(x))
 1066 /*#if defined(__FreeBSD__) || defined(__APPLE__)*/
 1067 /*#define SCTP_GETTIME_TIMEVAL(x) { \*/
 1068 /*      (x)->tv_sec = ticks / 1000; \*/
 1069 /*      (x)->tv_usec = (ticks % 1000) * 1000; \*/
 1070 /*}*/
 1071 
 1072 /*#else*/
 1073 /*#define SCTP_GETTIME_TIMEVAL(x)       (microtime(x))*/
 1074 /*#endif                                 __FreeBSD__ */
 1075 
 1076 #define sctp_sowwakeup(inp, so) \
 1077 do { \
 1078         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1079                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 1080         } else { \
 1081                 sowwakeup(so); \
 1082         } \
 1083 } while (0)
 1084 
 1085 #define sctp_sowwakeup_locked(inp, so) \
 1086 do { \
 1087         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1088                 SOCKBUF_UNLOCK(&((so)->so_snd)); \
 1089                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 1090         } else { \
 1091                 sowwakeup_locked(so); \
 1092         } \
 1093 } while (0)
 1094 
 1095 #define sctp_sorwakeup(inp, so) \
 1096 do { \
 1097         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1098                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 1099         } else { \
 1100                 sorwakeup(so); \
 1101         } \
 1102 } while (0)
 1103 
 1104 #define sctp_sorwakeup_locked(inp, so) \
 1105 do { \
 1106         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1107                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 1108                 SOCKBUF_UNLOCK(&((so)->so_rcv)); \
 1109         } else { \
 1110                 sorwakeup_locked(so); \
 1111         } \
 1112 } while (0)
 1113 
 1114 #endif                          /* _KERNEL */
 1115 #endif

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