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: releng/8.2/sys/netinet/sctp_constants.h 214483 2010-10-28 19:10:31Z tuexen $");
   35 
   36 #ifndef __sctp_constants_h__
   37 #define __sctp_constants_h__
   38 
   39 /* IANA assigned port number for SCTP over UDP encapsulation */
   40 /* For freebsd we cannot bind the port at
   41  * startup. Otherwise what will happen is
   42  * we really won't be bound. The user must
   43  * put it into the sysctl... or we need
   44  * to build a special timer for this to allow
   45  * us to wait 1 second or so after the system
   46  * comes up.
   47  */
   48 #define SCTP_OVER_UDP_TUNNELING_PORT 0
   49 /* Number of packets to get before sack sent by default */
   50 #define SCTP_DEFAULT_SACK_FREQ 2
   51 
   52 /* Address limit - This variable is calculated
   53  * based on an 65535 byte max ip packet. We take out 100 bytes
   54  * for the cookie, 40 bytes for a v6 header and 32
   55  * bytes for the init structure. A second init structure
   56  * for the init-ack and then finally a third one for the
   57  * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes.
   58  * This leaves 65299 bytes for addresses. We throw out the 299 bytes.
   59  * Now whatever we send in the INIT() we need to allow to get back in the
   60  * INIT-ACK plus all the values from INIT and INIT-ACK
   61  * listed in the cookie. Plus we need some overhead for
   62  * maybe copied parameters in the COOKIE. If we
   63  * allow 1080 addresses, and each side has 1080 V6 addresses
   64  * that will be 21600 bytes. In the INIT-ACK we will
   65  * see the INIT-ACK 21600 + 43200 in the cookie. This leaves
   66  * about 500 bytes slack for misc things in the cookie.
   67  */
   68 #define SCTP_ADDRESS_LIMIT 1080
   69 
   70 /* We need at least 2k of space for us, inits
   71  * larger than that lets abort.
   72  */
   73 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048)
   74 
   75 /* Number of addresses where we just skip the counting */
   76 #define SCTP_COUNT_LIMIT 40
   77 
   78 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000)
   79 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000)
   80 
   81 /* Number of ticks to delay before running
   82  * iterator on an address change.
   83  */
   84 #define SCTP_ADDRESS_TICK_DELAY 2
   85 
   86 #define SCTP_VERSION_STRING "KAME-BSD 1.1"
   87 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */
   88 #define SCTP_AUDIT_SIZE 256
   89 
   90 
   91 #define SCTP_KTRHEAD_NAME "sctp_iterator"
   92 #define SCTP_KTHREAD_PAGES 0
   93 
   94 
   95 /* If you support Multi-VRF how big to
   96  * make the initial array of VRF's to.
   97  */
   98 #define SCTP_DEFAULT_VRF_SIZE 4
   99 
  100 /* constants for rto calc */
  101 #define sctp_align_safe_nocopy 0
  102 #define sctp_align_unsafe_makecopy 1
  103 
  104 /* JRS - Values defined for the HTCP algorithm */
  105 #define ALPHA_BASE      (1<<7)  /* 1.0 with shift << 7 */
  106 #define BETA_MIN        (1<<6)  /* 0.5 with shift << 7 */
  107 #define BETA_MAX        102     /* 0.8 with shift << 7 */
  108 
  109 /* Places that CWND log can happen from */
  110 #define SCTP_CWND_LOG_FROM_FR   1
  111 #define SCTP_CWND_LOG_FROM_RTX  2
  112 #define SCTP_CWND_LOG_FROM_BRST 3
  113 #define SCTP_CWND_LOG_FROM_SS   4
  114 #define SCTP_CWND_LOG_FROM_CA   5
  115 #define SCTP_CWND_LOG_FROM_SAT  6
  116 #define SCTP_BLOCK_LOG_INTO_BLK 7
  117 #define SCTP_BLOCK_LOG_OUTOF_BLK 8
  118 #define SCTP_BLOCK_LOG_CHECK     9
  119 #define SCTP_STR_LOG_FROM_INTO_STRD 10
  120 #define SCTP_STR_LOG_FROM_IMMED_DEL 11
  121 #define SCTP_STR_LOG_FROM_INSERT_HD 12
  122 #define SCTP_STR_LOG_FROM_INSERT_MD 13
  123 #define SCTP_STR_LOG_FROM_INSERT_TL 14
  124 #define SCTP_STR_LOG_FROM_MARK_TSN  15
  125 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16
  126 #define SCTP_FR_LOG_BIGGEST_TSNS    17
  127 #define SCTP_FR_LOG_STRIKE_TEST     18
  128 #define SCTP_FR_LOG_STRIKE_CHUNK    19
  129 #define SCTP_FR_T3_TIMEOUT          20
  130 #define SCTP_MAP_PREPARE_SLIDE      21
  131 #define SCTP_MAP_SLIDE_FROM         22
  132 #define SCTP_MAP_SLIDE_RESULT       23
  133 #define SCTP_MAP_SLIDE_CLEARED      24
  134 #define SCTP_MAP_SLIDE_NONE         25
  135 #define SCTP_FR_T3_MARK_TIME        26
  136 #define SCTP_FR_T3_MARKED           27
  137 #define SCTP_FR_T3_STOPPED          28
  138 #define SCTP_FR_MARKED              30
  139 #define SCTP_CWND_LOG_NOADV_SS      31
  140 #define SCTP_CWND_LOG_NOADV_CA      32
  141 #define SCTP_MAX_BURST_APPLIED      33
  142 #define SCTP_MAX_IFP_APPLIED        34
  143 #define SCTP_MAX_BURST_ERROR_STOP   35
  144 #define SCTP_INCREASE_PEER_RWND     36
  145 #define SCTP_DECREASE_PEER_RWND     37
  146 #define SCTP_SET_PEER_RWND_VIA_SACK 38
  147 #define SCTP_LOG_MBCNT_INCREASE     39
  148 #define SCTP_LOG_MBCNT_DECREASE     40
  149 #define SCTP_LOG_MBCNT_CHKSET       41
  150 #define SCTP_LOG_NEW_SACK           42
  151 #define SCTP_LOG_TSN_ACKED          43
  152 #define SCTP_LOG_TSN_REVOKED        44
  153 #define SCTP_LOG_LOCK_TCB           45
  154 #define SCTP_LOG_LOCK_INP           46
  155 #define SCTP_LOG_LOCK_SOCK          47
  156 #define SCTP_LOG_LOCK_SOCKBUF_R     48
  157 #define SCTP_LOG_LOCK_SOCKBUF_S     49
  158 #define SCTP_LOG_LOCK_CREATE        50
  159 #define SCTP_LOG_INITIAL_RTT        51
  160 #define SCTP_LOG_RTTVAR             52
  161 #define SCTP_LOG_SBALLOC            53
  162 #define SCTP_LOG_SBFREE             54
  163 #define SCTP_LOG_SBRESULT           55
  164 #define SCTP_FR_DUPED               56
  165 #define SCTP_FR_MARKED_EARLY        57
  166 #define SCTP_FR_CWND_REPORT         58
  167 #define SCTP_FR_CWND_REPORT_START   59
  168 #define SCTP_FR_CWND_REPORT_STOP    60
  169 #define SCTP_CWND_LOG_FROM_SEND     61
  170 #define SCTP_CWND_INITIALIZATION    62
  171 #define SCTP_CWND_LOG_FROM_T3       63
  172 #define SCTP_CWND_LOG_FROM_SACK     64
  173 #define SCTP_CWND_LOG_NO_CUMACK     65
  174 #define SCTP_CWND_LOG_FROM_RESEND   66
  175 #define SCTP_FR_LOG_CHECK_STRIKE    67
  176 #define SCTP_SEND_NOW_COMPLETES     68
  177 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69
  178 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS  70
  179 #define SCTP_LOG_FREE_SENT             71
  180 #define SCTP_NAGLE_APPLIED          72
  181 #define SCTP_NAGLE_SKIPPED          73
  182 #define SCTP_WAKESND_FROM_SACK      74
  183 #define SCTP_WAKESND_FROM_FWDTSN    75
  184 #define SCTP_NOWAKE_FROM_SACK       76
  185 #define SCTP_CWNDLOG_PRESEND        77
  186 #define SCTP_CWNDLOG_ENDSEND        78
  187 #define SCTP_AT_END_OF_SACK         79
  188 #define SCTP_REASON_FOR_SC          80
  189 #define SCTP_BLOCK_LOG_INTO_BLKA    81
  190 #define SCTP_ENTER_USER_RECV        82
  191 #define SCTP_USER_RECV_SACKS        83
  192 #define SCTP_SORECV_BLOCKSA         84
  193 #define SCTP_SORECV_BLOCKSB         85
  194 #define SCTP_SORECV_DONE            86
  195 #define SCTP_SACK_RWND_UPDATE       87
  196 #define SCTP_SORECV_ENTER           88
  197 #define SCTP_SORECV_ENTERPL         89
  198 #define SCTP_MBUF_INPUT             90
  199 #define SCTP_MBUF_IALLOC            91
  200 #define SCTP_MBUF_IFREE             92
  201 #define SCTP_MBUF_ICOPY             93
  202 #define SCTP_MBUF_SPLIT             94
  203 #define SCTP_SORCV_FREECTL          95
  204 #define SCTP_SORCV_DOESCPY          96
  205 #define SCTP_SORCV_DOESLCK          97
  206 #define SCTP_SORCV_DOESADJ          98
  207 #define SCTP_SORCV_BOTWHILE         99
  208 #define SCTP_SORCV_PASSBF          100
  209 #define SCTP_SORCV_ADJD            101
  210 #define SCTP_UNKNOWN_MAX           102
  211 #define SCTP_RANDY_STUFF           103
  212 #define SCTP_RANDY_STUFF1          104
  213 #define SCTP_STRMOUT_LOG_ASSIGN    105
  214 #define SCTP_STRMOUT_LOG_SEND      106
  215 #define SCTP_FLIGHT_LOG_DOWN_CA    107
  216 #define SCTP_FLIGHT_LOG_UP         108
  217 #define SCTP_FLIGHT_LOG_DOWN_GAP   109
  218 #define SCTP_FLIGHT_LOG_DOWN_RSND  110
  219 #define SCTP_FLIGHT_LOG_UP_RSND    111
  220 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO    112
  221 #define SCTP_FLIGHT_LOG_DOWN_WP    113
  222 #define SCTP_FLIGHT_LOG_UP_REVOKE  114
  223 #define SCTP_FLIGHT_LOG_DOWN_PDRP  115
  224 #define SCTP_FLIGHT_LOG_DOWN_PMTU  116
  225 #define SCTP_SACK_LOG_NORMAL       117
  226 #define SCTP_SACK_LOG_EXPRESS      118
  227 #define SCTP_MAP_TSN_ENTERS        119
  228 #define SCTP_THRESHOLD_CLEAR       120
  229 #define SCTP_THRESHOLD_INCR        121
  230 #define SCTP_FLIGHT_LOG_DWN_WP_FWD 122
  231 #define SCTP_FWD_TSN_CHECK         123
  232 #define SCTP_LOG_MAX_TYPES 124
  233 /*
  234  * To turn on various logging, you must first enable 'options KTR' and
  235  * you might want to bump the entires 'options KTR_ENTRIES=80000'.
  236  * To get something to log you define one of the logging defines.
  237  * (see LINT).
  238  *
  239  * This gets the compile in place, but you still need to turn the
  240  * logging flag on too in the sysctl (see in sctp.h).
  241  */
  242 
  243 #define SCTP_LOG_EVENT_UNKNOWN 0
  244 #define SCTP_LOG_EVENT_CWND  1
  245 #define SCTP_LOG_EVENT_BLOCK 2
  246 #define SCTP_LOG_EVENT_STRM  3
  247 #define SCTP_LOG_EVENT_FR    4
  248 #define SCTP_LOG_EVENT_MAP   5
  249 #define SCTP_LOG_EVENT_MAXBURST 6
  250 #define SCTP_LOG_EVENT_RWND  7
  251 #define SCTP_LOG_EVENT_MBCNT 8
  252 #define SCTP_LOG_EVENT_SACK  9
  253 #define SCTP_LOG_LOCK_EVENT 10
  254 #define SCTP_LOG_EVENT_RTT  11
  255 #define SCTP_LOG_EVENT_SB   12
  256 #define SCTP_LOG_EVENT_NAGLE 13
  257 #define SCTP_LOG_EVENT_WAKE 14
  258 #define SCTP_LOG_MISC_EVENT 15
  259 #define SCTP_LOG_EVENT_CLOSE 16
  260 #define SCTP_LOG_EVENT_MBUF 17
  261 #define SCTP_LOG_CHUNK_PROC 18
  262 #define SCTP_LOG_ERROR_RET  19
  263 
  264 #define SCTP_LOG_MAX_EVENT 20
  265 
  266 #define SCTP_LOCK_UNKNOWN 2
  267 
  268 
  269 /* number of associations by default for zone allocation */
  270 #define SCTP_MAX_NUM_OF_ASOC    40000
  271 /* how many addresses per assoc remote and local */
  272 #define SCTP_SCALE_FOR_ADDR     2
  273 
  274 /* default AUTO_ASCONF mode enable(1)/disable(0) value (sysctl) */
  275 #define SCTP_DEFAULT_AUTO_ASCONF        1
  276 
  277 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */
  278 #define SCTP_DEFAULT_MULTIPLE_ASCONFS   0
  279 
  280 /* default MOBILITY_BASE mode enable(1)/disable(0) value (sysctl) */
  281 #define SCTP_DEFAULT_MOBILITY_BASE      0
  282 
  283 /* default MOBILITY_FASTHANDOFF mode enable(1)/disable(0) value (sysctl) */
  284 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF       0
  285 
  286 /*
  287  * Theshold for rwnd updates, we have to read (sb_hiwat >>
  288  * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a
  289  * window update sack. When we look, we compare the last rwnd we sent vs the
  290  * current rwnd. It too must be greater than this value. Using 3 divdes the
  291  * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need
  292  * to read 8k. This seems about right.. I hope :-D.. we do set a
  293  * min of a MTU on it so if the rwnd is real small we will insist
  294  * on a full MTU of 1500 bytes.
  295  */
  296 #define SCTP_RWND_HIWAT_SHIFT 3
  297 
  298 /* How much of the rwnd must the
  299  * message be taking up to start partial delivery.
  300  * We calculate this by shifing the hi_water (recv_win)
  301  * left the following .. set to 1, when a message holds
  302  * 1/2 the rwnd. If we set it to 2 when a message holds
  303  * 1/4 the rwnd...etc..
  304  */
  305 
  306 #define SCTP_PARTIAL_DELIVERY_SHIFT 1
  307 
  308 /*
  309  * default HMAC for cookies, etc... use one of the AUTH HMAC id's
  310  * SCTP_HMAC is the HMAC_ID to use
  311  * SCTP_SIGNATURE_SIZE is the digest length
  312  */
  313 #define SCTP_HMAC               SCTP_AUTH_HMAC_ID_SHA1
  314 #define SCTP_SIGNATURE_SIZE     SCTP_AUTH_DIGEST_LEN_SHA1
  315 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE
  316 
  317 /*
  318  * the SCTP protocol signature this includes the version number encoded in
  319  * the last 4 bits of the signature.
  320  */
  321 #define PROTO_SIGNATURE_A       0x30000000
  322 #define SCTP_VERSION_NUMBER     0x3
  323 
  324 #define MAX_TSN 0xffffffff
  325 #define MAX_SEQ 0xffff
  326 
  327 /* how many executions every N tick's */
  328 #define SCTP_ITERATOR_MAX_AT_ONCE 20
  329 
  330 /* number of clock ticks between iterator executions */
  331 #define SCTP_ITERATOR_TICKS 1
  332 
  333 /*
  334  * option: If you comment out the following you will receive the old behavior
  335  * of obeying cwnd for the fast retransmit algorithm. With this defined a FR
  336  * happens right away with-out waiting for the flightsize to drop below the
  337  * cwnd value (which is reduced by the FR to 1/2 the inflight packets).
  338  */
  339 #define SCTP_IGNORE_CWND_ON_FR 1
  340 
  341 /*
  342  * Adds implementors guide behavior to only use newest highest update in SACK
  343  * gap ack's to figure out if you need to stroke a chunk for FR.
  344  */
  345 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1
  346 
  347 /* default max I can burst out after a fast retransmit */
  348 #define SCTP_DEF_MAX_BURST 4
  349 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */
  350 #define SCTP_FIRST_MBUF_RESV 68
  351 /* Packet transmit states in the sent field */
  352 #define SCTP_DATAGRAM_UNSENT            0
  353 #define SCTP_DATAGRAM_SENT              1
  354 #define SCTP_DATAGRAM_RESEND1           2       /* not used (in code, but may
  355                                                  * hit this value) */
  356 #define SCTP_DATAGRAM_RESEND2           3       /* not used (in code, but may
  357                                                  * hit this value) */
  358 #define SCTP_DATAGRAM_RESEND            4
  359 #define SCTP_DATAGRAM_ACKED             10010
  360 #define SCTP_DATAGRAM_MARKED            20010
  361 #define SCTP_FORWARD_TSN_SKIP           30010
  362 
  363 /* chunk output send from locations */
  364 #define SCTP_OUTPUT_FROM_USR_SEND       0
  365 #define SCTP_OUTPUT_FROM_T3             1
  366 #define SCTP_OUTPUT_FROM_INPUT_ERROR    2
  367 #define SCTP_OUTPUT_FROM_CONTROL_PROC   3
  368 #define SCTP_OUTPUT_FROM_SACK_TMR       4
  369 #define SCTP_OUTPUT_FROM_SHUT_TMR       5
  370 #define SCTP_OUTPUT_FROM_HB_TMR         6
  371 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR   7
  372 #define SCTP_OUTPUT_FROM_ASCONF_TMR     8
  373 #define SCTP_OUTPUT_FROM_STRRST_TMR     9
  374 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR  10
  375 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR   11
  376 #define SCTP_OUTPUT_FROM_STRRST_REQ     12
  377 #define SCTP_OUTPUT_FROM_USR_RCVD       13
  378 #define SCTP_OUTPUT_FROM_COOKIE_ACK     14
  379 #define SCTP_OUTPUT_FROM_DRAIN          15
  380 #define SCTP_OUTPUT_FROM_CLOSING        16
  381 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */
  382 
  383 /* align to 32-bit sizes */
  384 #define SCTP_SIZE32(x)  ((((x)+3) >> 2) << 2)
  385 
  386 #define IS_SCTP_CONTROL(a) ((a)->chunk_type != SCTP_DATA)
  387 #define IS_SCTP_DATA(a) ((a)->chunk_type == SCTP_DATA)
  388 
  389 
  390 /* SCTP parameter types */
  391 /*************0x0000 series*************/
  392 #define SCTP_HEARTBEAT_INFO             0x0001
  393 #define SCTP_IPV4_ADDRESS               0x0005
  394 #define SCTP_IPV6_ADDRESS               0x0006
  395 #define SCTP_STATE_COOKIE               0x0007
  396 #define SCTP_UNRECOG_PARAM              0x0008
  397 #define SCTP_COOKIE_PRESERVE            0x0009
  398 #define SCTP_HOSTNAME_ADDRESS           0x000b
  399 #define SCTP_SUPPORTED_ADDRTYPE         0x000c
  400 
  401 /* draft-ietf-stewart-tsvwg-strreset-xxx */
  402 #define SCTP_STR_RESET_OUT_REQUEST      0x000d
  403 #define SCTP_STR_RESET_IN_REQUEST       0x000e
  404 #define SCTP_STR_RESET_TSN_REQUEST      0x000f
  405 #define SCTP_STR_RESET_RESPONSE         0x0010
  406 #define SCTP_STR_RESET_ADD_STREAMS  0x0011
  407 
  408 #define SCTP_MAX_RESET_PARAMS 2
  409 #define SCTP_STREAM_RESET_TSN_DELTA    0x1000
  410 
  411 /*************0x4000 series*************/
  412 
  413 /*************0x8000 series*************/
  414 #define SCTP_ECN_CAPABLE                0x8000
  415 /* ECN Nonce: draft-ladha-sctp-ecn-nonce */
  416 #define SCTP_ECN_NONCE_SUPPORTED        0x8001
  417 /* draft-ietf-tsvwg-auth-xxx */
  418 #define SCTP_RANDOM                     0x8002
  419 #define SCTP_CHUNK_LIST                 0x8003
  420 #define SCTP_HMAC_LIST                  0x8004
  421 /*
  422  * draft-ietf-tsvwg-addip-sctp-xx param=0x8008  len=0xNNNN Byte | Byte | Byte
  423  * | Byte Byte | Byte ...
  424  *
  425  * Where each byte is a chunk type extension supported. For example, to support
  426  * all chunks one would have (in hex):
  427  *
  428  * 80 01 00 09 C0 C1 80 81 82 00 00 00
  429  *
  430  * Has the parameter. C0 = PR-SCTP    (RFC3758) C1, 80 = ASCONF (addip draft) 81
  431  * = Packet Drop 82 = Stream Reset 83 = Authentication
  432  */
  433 #define SCTP_SUPPORTED_CHUNK_EXT    0x8008
  434 
  435 /*************0xC000 series*************/
  436 #define SCTP_PRSCTP_SUPPORTED           0xc000
  437 /* draft-ietf-tsvwg-addip-sctp */
  438 #define SCTP_ADD_IP_ADDRESS             0xc001
  439 #define SCTP_DEL_IP_ADDRESS             0xc002
  440 #define SCTP_ERROR_CAUSE_IND            0xc003
  441 #define SCTP_SET_PRIM_ADDR              0xc004
  442 #define SCTP_SUCCESS_REPORT             0xc005
  443 #define SCTP_ULP_ADAPTATION             0xc006
  444 /* behave-nat-draft */
  445 #define SCTP_HAS_NAT_SUPPORT            0xc007
  446 #define SCTP_NAT_VTAGS                  0xc008
  447 
  448 /* Notification error codes */
  449 #define SCTP_NOTIFY_DATAGRAM_UNSENT     0x0001
  450 #define SCTP_NOTIFY_DATAGRAM_SENT       0x0002
  451 #define SCTP_FAILED_THRESHOLD           0x0004
  452 #define SCTP_HEARTBEAT_SUCCESS          0x0008
  453 #define SCTP_RESPONSE_TO_USER_REQ       0x0010
  454 #define SCTP_INTERNAL_ERROR             0x0020
  455 #define SCTP_SHUTDOWN_GUARD_EXPIRES     0x0040
  456 #define SCTP_RECEIVED_SACK              0x0080
  457 #define SCTP_PEER_FAULTY                0x0100
  458 #define SCTP_ICMP_REFUSED               0x0200
  459 
  460 /* bits for TOS field */
  461 #define SCTP_ECT0_BIT           0x02
  462 #define SCTP_ECT1_BIT           0x01
  463 #define SCTP_CE_BITS            0x03
  464 
  465 /* below turns off above */
  466 #define SCTP_FLEXIBLE_ADDRESS   0x20
  467 #define SCTP_NO_HEARTBEAT       0x40
  468 
  469 /* mask to get sticky */
  470 #define SCTP_STICKY_OPTIONS_MASK        0x0c
  471 
  472 
  473 /*
  474  * SCTP states for internal state machine XXX (should match "user" values)
  475  */
  476 #define SCTP_STATE_EMPTY                0x0000
  477 #define SCTP_STATE_INUSE                0x0001
  478 #define SCTP_STATE_COOKIE_WAIT          0x0002
  479 #define SCTP_STATE_COOKIE_ECHOED        0x0004
  480 #define SCTP_STATE_OPEN                 0x0008
  481 #define SCTP_STATE_SHUTDOWN_SENT        0x0010
  482 #define SCTP_STATE_SHUTDOWN_RECEIVED    0x0020
  483 #define SCTP_STATE_SHUTDOWN_ACK_SENT    0x0040
  484 #define SCTP_STATE_SHUTDOWN_PENDING     0x0080
  485 #define SCTP_STATE_CLOSED_SOCKET        0x0100
  486 #define SCTP_STATE_ABOUT_TO_BE_FREED    0x0200
  487 #define SCTP_STATE_PARTIAL_MSG_LEFT     0x0400
  488 #define SCTP_STATE_WAS_ABORTED          0x0800
  489 #define SCTP_STATE_IN_ACCEPT_QUEUE      0x1000
  490 #define SCTP_STATE_MASK                 0x007f
  491 
  492 #define SCTP_GET_STATE(asoc)    ((asoc)->state & SCTP_STATE_MASK)
  493 #define SCTP_SET_STATE(asoc, newstate)  ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) |  newstate)
  494 #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate)
  495 #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate)
  496 
  497 /* SCTP reachability state for each address */
  498 #define SCTP_ADDR_REACHABLE             0x001
  499 #define SCTP_ADDR_NOT_REACHABLE         0x002
  500 #define SCTP_ADDR_NOHB                  0x004
  501 #define SCTP_ADDR_BEING_DELETED         0x008
  502 #define SCTP_ADDR_NOT_IN_ASSOC          0x010
  503 #define SCTP_ADDR_WAS_PRIMARY           0x020
  504 #define SCTP_ADDR_SWITCH_PRIMARY        0x040
  505 #define SCTP_ADDR_OUT_OF_SCOPE          0x080
  506 #define SCTP_ADDR_DOUBLE_SWITCH         0x100
  507 #define SCTP_ADDR_UNCONFIRMED           0x200
  508 #define SCTP_ADDR_REQ_PRIMARY           0x400
  509 /* JRS 5/13/07 - Added potentially failed state for CMT PF */
  510 #define SCTP_ADDR_PF            0x800
  511 #define SCTP_REACHABLE_MASK             0x203
  512 
  513 /* bound address types (e.g. valid address types to allow) */
  514 #define SCTP_BOUND_V6           0x01
  515 #define SCTP_BOUND_V4           0x02
  516 
  517 /*
  518  * what is the default number of mbufs in a chain I allow before switching to
  519  * a cluster
  520  */
  521 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5
  522 
  523 /* How long a cookie lives in milli-seconds */
  524 #define SCTP_DEFAULT_COOKIE_LIFE        60000
  525 
  526 /* resource limit of streams */
  527 #define MAX_SCTP_STREAMS        2048
  528 
  529 /* Maximum the mapping array will  grow to (TSN mapping array) */
  530 #define SCTP_MAPPING_ARRAY      512
  531 
  532 /* size of the inital malloc on the mapping array */
  533 #define SCTP_INITIAL_MAPPING_ARRAY  16
  534 /* how much we grow the mapping array each call */
  535 #define SCTP_MAPPING_ARRAY_INCR     32
  536 
  537 /*
  538  * Here we define the timer types used by the implementation as arguments in
  539  * the set/get timer type calls.
  540  */
  541 #define SCTP_TIMER_INIT         0
  542 #define SCTP_TIMER_RECV         1
  543 #define SCTP_TIMER_SEND         2
  544 #define SCTP_TIMER_HEARTBEAT    3
  545 #define SCTP_TIMER_PMTU         4
  546 #define SCTP_TIMER_MAXSHUTDOWN  5
  547 #define SCTP_TIMER_SIGNATURE    6
  548 /*
  549  * number of timer types in the base SCTP structure used in the set/get and
  550  * has the base default.
  551  */
  552 #define SCTP_NUM_TMRS   7
  553 
  554 /* timer types */
  555 #define SCTP_TIMER_TYPE_NONE            0
  556 #define SCTP_TIMER_TYPE_SEND            1
  557 #define SCTP_TIMER_TYPE_INIT            2
  558 #define SCTP_TIMER_TYPE_RECV            3
  559 #define SCTP_TIMER_TYPE_SHUTDOWN        4
  560 #define SCTP_TIMER_TYPE_HEARTBEAT       5
  561 #define SCTP_TIMER_TYPE_COOKIE          6
  562 #define SCTP_TIMER_TYPE_NEWCOOKIE       7
  563 #define SCTP_TIMER_TYPE_PATHMTURAISE    8
  564 #define SCTP_TIMER_TYPE_SHUTDOWNACK     9
  565 #define SCTP_TIMER_TYPE_ASCONF          10
  566 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD   11
  567 #define SCTP_TIMER_TYPE_AUTOCLOSE       12
  568 #define SCTP_TIMER_TYPE_EVENTWAKE       13
  569 #define SCTP_TIMER_TYPE_STRRESET        14
  570 #define SCTP_TIMER_TYPE_INPKILL         15
  571 #define SCTP_TIMER_TYPE_EARLYFR         17
  572 #define SCTP_TIMER_TYPE_ASOCKILL        18
  573 #define SCTP_TIMER_TYPE_ADDR_WQ         19
  574 #define SCTP_TIMER_TYPE_ZERO_COPY       20
  575 #define SCTP_TIMER_TYPE_ZCOPY_SENDQ     21
  576 #define SCTP_TIMER_TYPE_PRIM_DELETED    22
  577 /* add new timers here - and increment LAST */
  578 #define SCTP_TIMER_TYPE_LAST            23
  579 
  580 #define SCTP_IS_TIMER_TYPE_VALID(t)     (((t) > SCTP_TIMER_TYPE_NONE) && \
  581                                          ((t) < SCTP_TIMER_TYPE_LAST))
  582 
  583 
  584 
  585 /* max number of TSN's dup'd that I will hold */
  586 #define SCTP_MAX_DUP_TSNS       20
  587 
  588 /*
  589  * Here we define the types used when setting the retry amounts.
  590  */
  591 /* How many drop re-attempts we make on  INIT/COOKIE-ECHO */
  592 #define SCTP_RETRY_DROPPED_THRESH 4
  593 
  594 /*
  595  * Maxmium number of chunks a single association can have on it. Note that
  596  * this is a squishy number since the count can run over this if the user
  597  * sends a large message down .. the fragmented chunks don't count until
  598  * AFTER the message is on queue.. it would be the next send that blocks
  599  * things. This number will get tuned up at boot in the sctp_init and use the
  600  * number of clusters as a base. This way high bandwidth environments will
  601  * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks
  602  */
  603 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512
  604 
  605 
  606 /* The conversion from time to ticks and vice versa is done by rounding
  607  * upwards. This way we can test in the code the time to be positive and
  608  * know that this corresponds to a positive number of ticks.
  609  */
  610 #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000))
  611 #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz))
  612 
  613 #define SEC_TO_TICKS(x) ((x) * hz)
  614 #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz)
  615 
  616 /*
  617  * Basically the minimum amount of time before I do a early FR. Making this
  618  * value to low will cause duplicate retransmissions.
  619  */
  620 #define SCTP_MINFR_MSEC_TIMER 250
  621 /* The floor this value is allowed to fall to when starting a timer. */
  622 #define SCTP_MINFR_MSEC_FLOOR 20
  623 
  624 /* init timer def = 1 sec */
  625 #define SCTP_INIT_SEC   1
  626 
  627 /* send timer def = 1 seconds */
  628 #define SCTP_SEND_SEC   1
  629 
  630 /* recv timer def = 200ms  */
  631 #define SCTP_RECV_MSEC  200
  632 
  633 /* 30 seconds + RTO (in ms) */
  634 #define SCTP_HB_DEFAULT_MSEC    30000
  635 
  636 /* Max time I will wait for Shutdown to complete */
  637 #define SCTP_DEF_MAX_SHUTDOWN_SEC 180
  638 
  639 
  640 /*
  641  * This is how long a secret lives, NOT how long a cookie lives how many
  642  * ticks the current secret will live.
  643  */
  644 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600
  645 
  646 #define SCTP_RTO_UPPER_BOUND    (60000) /* 60 sec in ms */
  647 #define SCTP_RTO_UPPER_BOUND_SEC 60     /* for the init timer */
  648 #define SCTP_RTO_LOWER_BOUND    (1000)  /* 1 sec in ms */
  649 #define SCTP_RTO_INITIAL        (3000)  /* 3 sec in ms */
  650 
  651 
  652 #define SCTP_INP_KILL_TIMEOUT 20/* number of ms to retry kill of inpcb */
  653 #define SCTP_ASOC_KILL_TIMEOUT 10       /* number of ms to retry kill of inpcb */
  654 
  655 #define SCTP_DEF_MAX_INIT       8
  656 #define SCTP_DEF_MAX_SEND       10
  657 #define SCTP_DEF_MAX_PATH_RTX   5
  658 
  659 #define SCTP_DEF_PMTU_RAISE_SEC 600     /* 10 min between raise attempts */
  660 
  661 
  662 /* How many streams I request initally by default */
  663 #define SCTP_OSTREAM_INITIAL 10
  664 
  665 /*
  666  * How many smallest_mtu's need to increase before a window update sack is
  667  * sent (should be a power of 2).
  668  */
  669 /* Send window update (incr * this > hiwat). Should be a power of 2 */
  670 #define SCTP_MINIMAL_RWND               (4096)  /* minimal rwnd */
  671 
  672 #define SCTP_ADDRMAX            24
  673 
  674 /* SCTP DEBUG Switch parameters */
  675 #define SCTP_DEBUG_TIMER1       0x00000001
  676 #define SCTP_DEBUG_TIMER2       0x00000002      /* unused */
  677 #define SCTP_DEBUG_TIMER3       0x00000004      /* unused */
  678 #define SCTP_DEBUG_TIMER4       0x00000008
  679 #define SCTP_DEBUG_OUTPUT1      0x00000010
  680 #define SCTP_DEBUG_OUTPUT2      0x00000020
  681 #define SCTP_DEBUG_OUTPUT3      0x00000040
  682 #define SCTP_DEBUG_OUTPUT4      0x00000080
  683 #define SCTP_DEBUG_UTIL1        0x00000100
  684 #define SCTP_DEBUG_UTIL2        0x00000200      /* unused */
  685 #define SCTP_DEBUG_AUTH1        0x00000400
  686 #define SCTP_DEBUG_AUTH2        0x00000800      /* unused */
  687 #define SCTP_DEBUG_INPUT1       0x00001000
  688 #define SCTP_DEBUG_INPUT2       0x00002000
  689 #define SCTP_DEBUG_INPUT3       0x00004000
  690 #define SCTP_DEBUG_INPUT4       0x00008000      /* unused */
  691 #define SCTP_DEBUG_ASCONF1      0x00010000
  692 #define SCTP_DEBUG_ASCONF2      0x00020000
  693 #define SCTP_DEBUG_OUTPUT5      0x00040000      /* unused */
  694 #define SCTP_DEBUG_XXX          0x00080000      /* unused */
  695 #define SCTP_DEBUG_PCB1         0x00100000
  696 #define SCTP_DEBUG_PCB2         0x00200000      /* unused */
  697 #define SCTP_DEBUG_PCB3         0x00400000
  698 #define SCTP_DEBUG_PCB4         0x00800000
  699 #define SCTP_DEBUG_INDATA1      0x01000000
  700 #define SCTP_DEBUG_INDATA2      0x02000000      /* unused */
  701 #define SCTP_DEBUG_INDATA3      0x04000000      /* unused */
  702 #define SCTP_DEBUG_CRCOFFLOAD   0x08000000      /* unused */
  703 #define SCTP_DEBUG_USRREQ1      0x10000000      /* unused */
  704 #define SCTP_DEBUG_USRREQ2      0x20000000      /* unused */
  705 #define SCTP_DEBUG_PEEL1        0x40000000
  706 #define SCTP_DEBUG_XXXXX        0x80000000      /* unused */
  707 #define SCTP_DEBUG_ALL          0x7ff3ffff
  708 #define SCTP_DEBUG_NOISY        0x00040000
  709 
  710 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */
  711 #define SCTP_SWS_SENDER_DEF     1420
  712 
  713 /*
  714  * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1
  715  * would be hiwat/2 etc.
  716  */
  717 /* What receiver needs to see in sockbuf or we tell peer its 1 */
  718 #define SCTP_SWS_RECEIVER_DEF   3000
  719 
  720 #define SCTP_INITIAL_CWND 4380
  721 
  722 #define SCTP_DEFAULT_MTU 1500   /* emergency default MTU */
  723 /* amount peer is obligated to have in rwnd or I will abort */
  724 #define SCTP_MIN_RWND   1500
  725 
  726 #define SCTP_DEFAULT_MAXSEGMENT 65535
  727 
  728 #define SCTP_CHUNK_BUFFER_SIZE  512
  729 #define SCTP_PARAM_BUFFER_SIZE  512
  730 
  731 /* small chunk store for looking at chunk_list in auth */
  732 #define SCTP_SMALL_CHUNK_STORE 260
  733 
  734 #define SCTP_DEFAULT_MINSEGMENT 512     /* MTU size ... if no mtu disc */
  735 #define SCTP_HOW_MANY_SECRETS   2       /* how many secrets I keep */
  736 
  737 #define SCTP_NUMBER_OF_SECRETS  8       /* or 8 * 4 = 32 octets */
  738 #define SCTP_SECRET_SIZE        32      /* number of octets in a 256 bits */
  739 
  740 
  741 /*
  742  * SCTP upper layer notifications
  743  */
  744 #define SCTP_NOTIFY_ASSOC_UP                     1
  745 #define SCTP_NOTIFY_ASSOC_DOWN                   2
  746 #define SCTP_NOTIFY_INTERFACE_DOWN               3
  747 #define SCTP_NOTIFY_INTERFACE_UP                 4
  748 #define SCTP_NOTIFY_DG_FAIL                      5
  749 #define SCTP_NOTIFY_STRDATA_ERR                  6
  750 #define SCTP_NOTIFY_ASSOC_ABORTED                7
  751 #define SCTP_NOTIFY_PEER_OPENED_STREAM           8
  752 #define SCTP_NOTIFY_STREAM_OPENED_OK             9
  753 #define SCTP_NOTIFY_ASSOC_RESTART               10
  754 #define SCTP_NOTIFY_HB_RESP                     11
  755 #define SCTP_NOTIFY_ASCONF_SUCCESS              12
  756 #define SCTP_NOTIFY_ASCONF_FAILED               13
  757 #define SCTP_NOTIFY_PEER_SHUTDOWN               14
  758 #define SCTP_NOTIFY_ASCONF_ADD_IP               15
  759 #define SCTP_NOTIFY_ASCONF_DELETE_IP            16
  760 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY          17
  761 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 18
  762 #define SCTP_NOTIFY_INTERFACE_CONFIRMED         20
  763 #define SCTP_NOTIFY_STR_RESET_RECV              21
  764 #define SCTP_NOTIFY_STR_RESET_SEND              22
  765 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT        23
  766 #define SCTP_NOTIFY_STR_RESET_FAILED_IN         24
  767 #define SCTP_NOTIFY_AUTH_NEW_KEY                25
  768 #define SCTP_NOTIFY_AUTH_FREE_KEY               26
  769 #define SCTP_NOTIFY_SPECIAL_SP_FAIL             27
  770 #define SCTP_NOTIFY_NO_PEER_AUTH                28
  771 #define SCTP_NOTIFY_SENDER_DRY                  29
  772 #define SCTP_NOTIFY_STR_RESET_ADD_OK            30
  773 #define SCTP_NOTIFY_STR_RESET_ADD_FAIL          31
  774 #define SCTP_NOTIFY_STR_RESET_INSTREAM_ADD_OK   32
  775 #define SCTP_NOTIFY_MAX                         32
  776 
  777 
  778 /* This is the value for messages that are NOT completely
  779  * copied down where we will start to split the message.
  780  * So, with our default, we split only if the piece we
  781  * want to take will fill up a full MTU (assuming
  782  * a 1500 byte MTU).
  783  */
  784 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904
  785 
  786 /* ABORT CODES and other tell-tale location
  787  * codes are generated by adding the below
  788  * to the instance id.
  789  */
  790 
  791 /* File defines */
  792 #define SCTP_FROM_SCTP_INPUT   0x10000000
  793 #define SCTP_FROM_SCTP_PCB     0x20000000
  794 #define SCTP_FROM_SCTP_INDATA  0x30000000
  795 #define SCTP_FROM_SCTP_TIMER   0x40000000
  796 #define SCTP_FROM_SCTP_USRREQ  0x50000000
  797 #define SCTP_FROM_SCTPUTIL     0x60000000
  798 #define SCTP_FROM_SCTP6_USRREQ 0x70000000
  799 #define SCTP_FROM_SCTP_ASCONF  0x80000000
  800 #define SCTP_FROM_SCTP_OUTPUT  0x90000000
  801 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000
  802 #define SCTP_FROM_SCTP_PANDA   0xb0000000
  803 #define SCTP_FROM_SCTP_SYSCTL  0xc0000000
  804 
  805 /* Location ID's */
  806 #define SCTP_LOC_1  0x00000001
  807 #define SCTP_LOC_2  0x00000002
  808 #define SCTP_LOC_3  0x00000003
  809 #define SCTP_LOC_4  0x00000004
  810 #define SCTP_LOC_5  0x00000005
  811 #define SCTP_LOC_6  0x00000006
  812 #define SCTP_LOC_7  0x00000007
  813 #define SCTP_LOC_8  0x00000008
  814 #define SCTP_LOC_9  0x00000009
  815 #define SCTP_LOC_10 0x0000000a
  816 #define SCTP_LOC_11 0x0000000b
  817 #define SCTP_LOC_12 0x0000000c
  818 #define SCTP_LOC_13 0x0000000d
  819 #define SCTP_LOC_14 0x0000000e
  820 #define SCTP_LOC_15 0x0000000f
  821 #define SCTP_LOC_16 0x00000010
  822 #define SCTP_LOC_17 0x00000011
  823 #define SCTP_LOC_18 0x00000012
  824 #define SCTP_LOC_19 0x00000013
  825 #define SCTP_LOC_20 0x00000014
  826 #define SCTP_LOC_21 0x00000015
  827 #define SCTP_LOC_22 0x00000016
  828 #define SCTP_LOC_23 0x00000017
  829 #define SCTP_LOC_24 0x00000018
  830 #define SCTP_LOC_25 0x00000019
  831 #define SCTP_LOC_26 0x0000001a
  832 #define SCTP_LOC_27 0x0000001b
  833 #define SCTP_LOC_28 0x0000001c
  834 #define SCTP_LOC_29 0x0000001d
  835 #define SCTP_LOC_30 0x0000001e
  836 #define SCTP_LOC_31 0x0000001f
  837 #define SCTP_LOC_32 0x00000020
  838 #define SCTP_LOC_33 0x00000021
  839 
  840 
  841 /* Free assoc codes */
  842 #define SCTP_NORMAL_PROC      0
  843 #define SCTP_PCBFREE_NOFORCE  1
  844 #define SCTP_PCBFREE_FORCE    2
  845 
  846 /* From codes for adding addresses */
  847 #define SCTP_ADDR_IS_CONFIRMED 8
  848 #define SCTP_ADDR_DYNAMIC_ADDED 6
  849 #define SCTP_IN_COOKIE_PROC 100
  850 #define SCTP_ALLOC_ASOC  1
  851 #define SCTP_LOAD_ADDR_2 2
  852 #define SCTP_LOAD_ADDR_3 3
  853 #define SCTP_LOAD_ADDR_4 4
  854 #define SCTP_LOAD_ADDR_5 5
  855 
  856 #define SCTP_DONOT_SETSCOPE 0
  857 #define SCTP_DO_SETSCOPE 1
  858 
  859 
  860 /* This value determines the default for when
  861  * we try to add more on the send queue., if
  862  * there is room. This prevents us from cycling
  863  * into the copy_resume routine to often if
  864  * we have not got enough space to add a decent
  865  * enough size message. Note that if we have enough
  866  * space to complete the message copy we will always
  867  * add to the message, no matter what the size. Its
  868  * only when we reach the point that we have some left
  869  * to add, there is only room for part of it that we
  870  * will use this threshold. Its also a sysctl.
  871  */
  872 #define SCTP_DEFAULT_ADD_MORE 1452
  873 
  874 #ifndef SCTP_PCBHASHSIZE
  875 /* default number of association hash buckets in each endpoint */
  876 #define SCTP_PCBHASHSIZE 256
  877 #endif
  878 #ifndef SCTP_TCBHASHSIZE
  879 #define SCTP_TCBHASHSIZE 1024
  880 #endif
  881 
  882 #ifndef SCTP_CHUNKQUEUE_SCALE
  883 #define SCTP_CHUNKQUEUE_SCALE 10
  884 #endif
  885 
  886 /* clock variance is 1 ms */
  887 #define SCTP_CLOCK_GRANULARITY  1
  888 #define IP_HDR_SIZE 40          /* we use the size of a IP6 header here this
  889                                  * detracts a small amount for ipv4 but it
  890                                  * simplifies the ipv6 addition */
  891 
  892 /* Argument magic number for sctp_inpcb_free() */
  893 
  894 /* third argument */
  895 #define SCTP_CALLED_DIRECTLY_NOCMPSET     0
  896 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE  1
  897 #define SCTP_CALLED_FROM_INPKILL_TIMER    2
  898 /* second argument */
  899 #define SCTP_FREE_SHOULD_USE_ABORT          1
  900 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0
  901 
  902 #ifndef IPPROTO_SCTP
  903 #define IPPROTO_SCTP 132        /* the Official IANA number :-) */
  904 #endif                          /* !IPPROTO_SCTP */
  905 
  906 #define SCTP_MAX_DATA_BUNDLING          256
  907 
  908 /* modular comparison */
  909 /* True if a > b (mod = M) */
  910 #define compare_with_wrap(a, b, M) (((a > b) && ((a - b) < ((M >> 1) + 1))) || \
  911               ((b > a) && ((b - a) > ((M >> 1) + 1))))
  912 
  913 
  914 /* Mapping array manipulation routines */
  915 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01)
  916 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07))))
  917 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff))
  918 #define SCTP_CALC_TSN_TO_GAP(gap, tsn, mapping_tsn) do { \
  919                         if (tsn >= mapping_tsn) { \
  920                                                 gap = tsn - mapping_tsn; \
  921                                         } else { \
  922                                                 gap = (MAX_TSN - mapping_tsn) + tsn + 1; \
  923                                         } \
  924                   } while(0)
  925 
  926 
  927 #define SCTP_RETRAN_DONE -1
  928 #define SCTP_RETRAN_EXIT -2
  929 
  930 /*
  931  * This value defines the number of vtag block time wait entry's per list
  932  * element.  Each entry will take 2 4 byte ints (and of course the overhead
  933  * of the next pointer as well). Using 15 as an example will yield * ((8 *
  934  * 15) + 8) or 128 bytes of overhead for each timewait block that gets
  935  * initialized. Increasing it to 31 would yeild 256 bytes per block.
  936  */
  937 #define SCTP_NUMBER_IN_VTAG_BLOCK 15
  938 /*
  939  * If we use the STACK option, we have an array of this size head pointers.
  940  * This array is mod'd the with the size to find which bucket and then all
  941  * entries must be searched to see if the tag is in timed wait. If so we
  942  * reject it.
  943  */
  944 #define SCTP_STACK_VTAG_HASH_SIZE   32
  945 
  946 /*
  947  * Number of seconds of time wait for a vtag.
  948  */
  949 #define SCTP_TIME_WAIT 60
  950 
  951 #define SCTP_SEND_BUFFER_SPLITTING 0x00000001
  952 #define SCTP_RECV_BUFFER_SPLITTING 0x00000002
  953 
  954 /* The system retains a cache of free chunks such to
  955  * cut down on calls the memory allocation system. There
  956  * is a per association limit of free items and a overall
  957  * system limit. If either one gets hit then the resource
  958  * stops being cached.
  959  */
  960 
  961 #define SCTP_DEF_ASOC_RESC_LIMIT 10
  962 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000
  963 
  964 /*-
  965  * defines for socket lock states.
  966  * Used by __APPLE__ and SCTP_SO_LOCK_TESTING
  967  */
  968 #define SCTP_SO_LOCKED          1
  969 #define SCTP_SO_NOT_LOCKED      0
  970 
  971 
  972 #define SCTP_HOLDS_LOCK 1
  973 #define SCTP_NOT_LOCKED 0
  974 
  975 /*-
  976  * For address locks, do we hold the lock?
  977  */
  978 #define SCTP_ADDR_LOCKED 1
  979 #define SCTP_ADDR_NOT_LOCKED 0
  980 
  981 #define IN4_ISPRIVATE_ADDRESS(a) \
  982    ((((uint8_t *)&(a)->s_addr)[0] == 10) || \
  983     ((((uint8_t *)&(a)->s_addr)[0] == 172) && \
  984      (((uint8_t *)&(a)->s_addr)[1] >= 16) && \
  985      (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \
  986     ((((uint8_t *)&(a)->s_addr)[0] == 192) && \
  987      (((uint8_t *)&(a)->s_addr)[1] == 168)))
  988 
  989 #define IN4_ISLOOPBACK_ADDRESS(a) \
  990     ((((uint8_t *)&(a)->s_addr)[0] == 127) && \
  991      (((uint8_t *)&(a)->s_addr)[1] == 0) && \
  992      (((uint8_t *)&(a)->s_addr)[2] == 0) && \
  993      (((uint8_t *)&(a)->s_addr)[3] == 1))
  994 
  995 
  996 #if defined(_KERNEL)
  997 
  998 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x))
  999 #define SCTP_GETPTIME_TIMEVAL(x)        (microuptime(x))
 1000 #endif
 1001 /*#if defined(__FreeBSD__) || defined(__APPLE__)*/
 1002 /*#define SCTP_GETTIME_TIMEVAL(x) { \*/
 1003 /*      (x)->tv_sec = ticks / 1000; \*/
 1004 /*      (x)->tv_usec = (ticks % 1000) * 1000; \*/
 1005 /*}*/
 1006 
 1007 /*#else*/
 1008 /*#define SCTP_GETTIME_TIMEVAL(x)       (microtime(x))*/
 1009 /*#endif                                 __FreeBSD__ */
 1010 
 1011 #if defined(_KERNEL) || defined(__Userspace__)
 1012 #define sctp_sowwakeup(inp, so) \
 1013 do { \
 1014         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1015                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 1016         } else { \
 1017                 sowwakeup(so); \
 1018         } \
 1019 } while (0)
 1020 
 1021 #define sctp_sowwakeup_locked(inp, so) \
 1022 do { \
 1023         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1024                 SOCKBUF_UNLOCK(&((so)->so_snd)); \
 1025                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 1026         } else { \
 1027                 sowwakeup_locked(so); \
 1028         } \
 1029 } while (0)
 1030 
 1031 #define sctp_sorwakeup(inp, so) \
 1032 do { \
 1033         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1034                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 1035         } else { \
 1036                 sorwakeup(so); \
 1037         } \
 1038 } while (0)
 1039 
 1040 #define sctp_sorwakeup_locked(inp, so) \
 1041 do { \
 1042         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 1043                 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 1044                 SOCKBUF_UNLOCK(&((so)->so_rcv)); \
 1045         } else { \
 1046                 sorwakeup_locked(so); \
 1047         } \
 1048 } while (0)
 1049 
 1050 #endif                          /* _KERNEL || __Userspace__ */
 1051 #endif

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