The Tor Browser: netwerk/sctp/src/netinet/sctp_constants.h@ac0c01689b40 (annotated)

netwerk/sctp/src/netinet/sctp_constants.h@ac0c01689b40 (annotated)

netwerk/sctp/src/netinet/sctp_constants.h

Thu, 15 Jan 2015 15:59:08 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:59:08 +0100
branch: TOR_BUG_9701
changeset 10: ac0c01689b40
permissions: -rwxr-xr-x

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /*-
  * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * a) Redistributions of source code must retain the above copyright notice,
  *    this list of conditions and the following disclaimer.
  *
  * b) Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the distribution.
  *
  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  *    contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 #ifdef __FreeBSD__
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD: head/sys/netinet/sctp_constants.h 256556 2013-10-15 20:21:27Z tuexen $");
 #endif
 #ifndef _NETINET_SCTP_CONSTANTS_H_
 #define _NETINET_SCTP_CONSTANTS_H_
 #if defined(__Userspace_os_Windows)
 extern void getwintimeofday(struct timeval *tv);
 #endif
 /* IANA assigned port number for SCTP over UDP encapsulation */
 #ifdef __FreeBSD__
 /* For freebsd we cannot bind the port at
  * startup. Otherwise what will happen is
  * we really won't be bound. The user must
  * put it into the sysctl... or we need
  * to build a special timer for this to allow
  * us to wait 1 second or so after the system
  * comes up.
  */
 #define SCTP_OVER_UDP_TUNNELING_PORT 0
 #else
 #define SCTP_OVER_UDP_TUNNELING_PORT 9899
 #endif
 /* Number of packets to get before sack sent by default */
 #define SCTP_DEFAULT_SACK_FREQ 2
 /* Address limit - This variable is calculated
  * based on an 65535 byte max ip packet. We take out 100 bytes
  * for the cookie, 40 bytes for a v6 header and 32
  * bytes for the init structure. A second init structure
  * for the init-ack and then finally a third one for the
  * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes.
  * This leaves 65299 bytes for addresses. We throw out the 299 bytes.
  * Now whatever we send in the INIT() we need to allow to get back in the
  * INIT-ACK plus all the values from INIT and INIT-ACK
  * listed in the cookie. Plus we need some overhead for
  * maybe copied parameters in the COOKIE. If we
  * allow 1080 addresses, and each side has 1080 V6 addresses
  * that will be 21600 bytes. In the INIT-ACK we will
  * see the INIT-ACK 21600 + 43200 in the cookie. This leaves
  * about 500 bytes slack for misc things in the cookie.
  */
 #define SCTP_ADDRESS_LIMIT 1080
 /* We need at least 2k of space for us, inits
  * larger than that lets abort.
  */
 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048)
 /* Number of addresses where we just skip the counting */
 #define SCTP_COUNT_LIMIT 40
 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000)
 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000)
 /* Number of ticks to delay before running
  * iterator on an address change.
  */
 #define SCTP_ADDRESS_TICK_DELAY 2
 #define SCTP_VERSION_STRING "KAME-BSD 1.1"
 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */
 #define SCTP_AUDIT_SIZE 256
 #define SCTP_KTRHEAD_NAME "sctp_iterator"
 #define SCTP_KTHREAD_PAGES 0
 #define SCTP_MCORE_NAME "sctp_core_worker"
 /* If you support Multi-VRF how big to
  * make the initial array of VRF's to.
  */
 #define SCTP_DEFAULT_VRF_SIZE 4
 /* constants for rto calc */
 #define sctp_align_safe_nocopy 0
 #define sctp_align_unsafe_makecopy 1
 /* JRS - Values defined for the HTCP algorithm */
 #define ALPHA_BASE	(1<<7)  /* 1.0 with shift << 7 */
 #define BETA_MIN	(1<<6)  /* 0.5 with shift << 7 */
 #define BETA_MAX	102	/* 0.8 with shift << 7 */
 /* Places that CWND log can happen from */
 #define SCTP_CWND_LOG_FROM_FR	1
 #define SCTP_CWND_LOG_FROM_RTX	2
 #define SCTP_CWND_LOG_FROM_BRST	3
 #define SCTP_CWND_LOG_FROM_SS	4
 #define SCTP_CWND_LOG_FROM_CA	5
 #define SCTP_CWND_LOG_FROM_SAT	6
 #define SCTP_BLOCK_LOG_INTO_BLK 7
 #define SCTP_BLOCK_LOG_OUTOF_BLK 8
 #define SCTP_BLOCK_LOG_CHECK     9
 #define SCTP_STR_LOG_FROM_INTO_STRD 10
 #define SCTP_STR_LOG_FROM_IMMED_DEL 11
 #define SCTP_STR_LOG_FROM_INSERT_HD 12
 #define SCTP_STR_LOG_FROM_INSERT_MD 13
 #define SCTP_STR_LOG_FROM_INSERT_TL 14
 #define SCTP_STR_LOG_FROM_MARK_TSN  15
 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16
 #define SCTP_FR_LOG_BIGGEST_TSNS    17
 #define SCTP_FR_LOG_STRIKE_TEST     18
 #define SCTP_FR_LOG_STRIKE_CHUNK    19
 #define SCTP_FR_T3_TIMEOUT          20
 #define SCTP_MAP_PREPARE_SLIDE      21
 #define SCTP_MAP_SLIDE_FROM         22
 #define SCTP_MAP_SLIDE_RESULT       23
 #define SCTP_MAP_SLIDE_CLEARED	    24
 #define SCTP_MAP_SLIDE_NONE         25
 #define SCTP_FR_T3_MARK_TIME        26
 #define SCTP_FR_T3_MARKED           27
 #define SCTP_FR_T3_STOPPED          28
 #define SCTP_FR_MARKED              30
 #define SCTP_CWND_LOG_NOADV_SS      31
 #define SCTP_CWND_LOG_NOADV_CA      32
 #define SCTP_MAX_BURST_APPLIED      33
 #define SCTP_MAX_IFP_APPLIED        34
 #define SCTP_MAX_BURST_ERROR_STOP   35
 #define SCTP_INCREASE_PEER_RWND     36
 #define SCTP_DECREASE_PEER_RWND     37
 #define SCTP_SET_PEER_RWND_VIA_SACK 38
 #define SCTP_LOG_MBCNT_INCREASE     39
 #define SCTP_LOG_MBCNT_DECREASE     40
 #define SCTP_LOG_MBCNT_CHKSET       41
 #define SCTP_LOG_NEW_SACK           42
 #define SCTP_LOG_TSN_ACKED          43
 #define SCTP_LOG_TSN_REVOKED        44
 #define SCTP_LOG_LOCK_TCB           45
 #define SCTP_LOG_LOCK_INP           46
 #define SCTP_LOG_LOCK_SOCK          47
 #define SCTP_LOG_LOCK_SOCKBUF_R     48
 #define SCTP_LOG_LOCK_SOCKBUF_S     49
 #define SCTP_LOG_LOCK_CREATE        50
 #define SCTP_LOG_INITIAL_RTT        51
 #define SCTP_LOG_RTTVAR             52
 #define SCTP_LOG_SBALLOC            53
 #define SCTP_LOG_SBFREE             54
 #define SCTP_LOG_SBRESULT           55
 #define SCTP_FR_DUPED               56
 #define SCTP_FR_MARKED_EARLY        57
 #define SCTP_FR_CWND_REPORT         58
 #define SCTP_FR_CWND_REPORT_START   59
 #define SCTP_FR_CWND_REPORT_STOP    60
 #define SCTP_CWND_LOG_FROM_SEND     61
 #define SCTP_CWND_INITIALIZATION    62
 #define SCTP_CWND_LOG_FROM_T3       63
 #define SCTP_CWND_LOG_FROM_SACK     64
 #define SCTP_CWND_LOG_NO_CUMACK     65
 #define SCTP_CWND_LOG_FROM_RESEND   66
 #define SCTP_FR_LOG_CHECK_STRIKE    67
 #define SCTP_SEND_NOW_COMPLETES     68
 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69
 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS  70
 #define SCTP_LOG_FREE_SENT             71
 #define SCTP_NAGLE_APPLIED          72
 #define SCTP_NAGLE_SKIPPED          73
 #define SCTP_WAKESND_FROM_SACK      74
 #define SCTP_WAKESND_FROM_FWDTSN    75
 #define SCTP_NOWAKE_FROM_SACK       76
 #define SCTP_CWNDLOG_PRESEND        77
 #define SCTP_CWNDLOG_ENDSEND        78
 #define SCTP_AT_END_OF_SACK         79
 #define SCTP_REASON_FOR_SC          80
 #define SCTP_BLOCK_LOG_INTO_BLKA    81
 #define SCTP_ENTER_USER_RECV        82
 #define SCTP_USER_RECV_SACKS        83
 #define SCTP_SORECV_BLOCKSA         84
 #define SCTP_SORECV_BLOCKSB         85
 #define SCTP_SORECV_DONE            86
 #define SCTP_SACK_RWND_UPDATE       87
 #define SCTP_SORECV_ENTER           88
 #define SCTP_SORECV_ENTERPL         89
 #define SCTP_MBUF_INPUT             90
 #define SCTP_MBUF_IALLOC            91
 #define SCTP_MBUF_IFREE             92
 #define SCTP_MBUF_ICOPY             93
 #define SCTP_MBUF_SPLIT             94
 #define SCTP_SORCV_FREECTL          95
 #define SCTP_SORCV_DOESCPY          96
 #define SCTP_SORCV_DOESLCK          97
 #define SCTP_SORCV_DOESADJ          98
 #define SCTP_SORCV_BOTWHILE         99
 #define SCTP_SORCV_PASSBF          100
 #define SCTP_SORCV_ADJD            101
 #define SCTP_UNKNOWN_MAX           102
 #define SCTP_RANDY_STUFF           103
 #define SCTP_RANDY_STUFF1          104
 #define SCTP_STRMOUT_LOG_ASSIGN	   105
 #define SCTP_STRMOUT_LOG_SEND	   106
 #define SCTP_FLIGHT_LOG_DOWN_CA    107
 #define SCTP_FLIGHT_LOG_UP         108
 #define SCTP_FLIGHT_LOG_DOWN_GAP   109
 #define SCTP_FLIGHT_LOG_DOWN_RSND  110
 #define SCTP_FLIGHT_LOG_UP_RSND    111
 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO    112
 #define SCTP_FLIGHT_LOG_DOWN_WP    113
 #define SCTP_FLIGHT_LOG_UP_REVOKE  114
 #define SCTP_FLIGHT_LOG_DOWN_PDRP  115
 #define SCTP_FLIGHT_LOG_DOWN_PMTU  116
 #define SCTP_SACK_LOG_NORMAL	   117
 #define SCTP_SACK_LOG_EXPRESS	   118
 #define SCTP_MAP_TSN_ENTERS        119
 #define SCTP_THRESHOLD_CLEAR       120
 #define SCTP_THRESHOLD_INCR        121
 #define SCTP_FLIGHT_LOG_DWN_WP_FWD 122
 #define SCTP_FWD_TSN_CHECK         123
 #define SCTP_LOG_MAX_TYPES 124
 /*
  * To turn on various logging, you must first enable 'options KTR' and
  * you might want to bump the entires 'options KTR_ENTRIES=80000'.
  * To get something to log you define one of the logging defines.
  * (see LINT).
  *
  * This gets the compile in place, but you still need to turn the
  * logging flag on too in the sysctl (see in sctp.h).
  */
 #define SCTP_LOG_EVENT_UNKNOWN 0
 #define SCTP_LOG_EVENT_CWND  1
 #define SCTP_LOG_EVENT_BLOCK 2
 #define SCTP_LOG_EVENT_STRM  3
 #define SCTP_LOG_EVENT_FR    4
 #define SCTP_LOG_EVENT_MAP   5
 #define SCTP_LOG_EVENT_MAXBURST 6
 #define SCTP_LOG_EVENT_RWND  7
 #define SCTP_LOG_EVENT_MBCNT 8
 #define SCTP_LOG_EVENT_SACK  9
 #define SCTP_LOG_LOCK_EVENT 10
 #define SCTP_LOG_EVENT_RTT  11
 #define SCTP_LOG_EVENT_SB   12
 #define SCTP_LOG_EVENT_NAGLE 13
 #define SCTP_LOG_EVENT_WAKE 14
 #define SCTP_LOG_MISC_EVENT 15
 #define SCTP_LOG_EVENT_CLOSE 16
 #define SCTP_LOG_EVENT_MBUF 17
 #define SCTP_LOG_CHUNK_PROC 18
 #define SCTP_LOG_ERROR_RET  19
 #define SCTP_LOG_MAX_EVENT 20
 #define SCTP_LOCK_UNKNOWN 2
 /* number of associations by default for zone allocation */
 #define SCTP_MAX_NUM_OF_ASOC	40000
 /* how many addresses per assoc remote and local */
 #define SCTP_SCALE_FOR_ADDR	2
 /* default AUTO_ASCONF mode enable(1)/disable(0) value (sysctl) */
 #if defined(__APPLE__)
 #if !defined(SCTP_APPLE_AUTO_ASCONF)
 #define SCTP_DEFAULT_AUTO_ASCONF        0
 #else
 #define SCTP_DEFAULT_AUTO_ASCONF	1
 #endif
 #else
 #define SCTP_DEFAULT_AUTO_ASCONF	1
 #endif
 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */
 #define SCTP_DEFAULT_MULTIPLE_ASCONFS	0
 /* default MOBILITY_BASE mode enable(1)/disable(0) value (sysctl) */
 #if defined(__APPLE__)
 #if !defined(SCTP_APPLE_MOBILITY_BASE)
 #define SCTP_DEFAULT_MOBILITY_BASE      0
 #else
 #define SCTP_DEFAULT_MOBILITY_BASE	1
 #endif
 #else
 #define SCTP_DEFAULT_MOBILITY_BASE	0
 #endif
 /* default MOBILITY_FASTHANDOFF mode enable(1)/disable(0) value (sysctl) */
 #if defined(__APPLE__)
 #if !defined(SCTP_APPLE_MOBILITY_FASTHANDOFF)
 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF	0
 #else
 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF	1
 #endif
 #else
 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF	0
 #endif
 /*
  * Theshold for rwnd updates, we have to read (sb_hiwat >>
  * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a
  * window update sack. When we look, we compare the last rwnd we sent vs the
  * current rwnd. It too must be greater than this value. Using 3 divdes the
  * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need
  * to read 8k. This seems about right.. I hope :-D.. we do set a
  * min of a MTU on it so if the rwnd is real small we will insist
  * on a full MTU of 1500 bytes.
  */
 #define SCTP_RWND_HIWAT_SHIFT 3
 /* How much of the rwnd must the
  * message be taking up to start partial delivery.
  * We calculate this by shifing the hi_water (recv_win)
  * left the following .. set to 1, when a message holds
  * 1/2 the rwnd. If we set it to 2 when a message holds
  * 1/4 the rwnd...etc..
  */
 #define SCTP_PARTIAL_DELIVERY_SHIFT 1
 /*
  * default HMAC for cookies, etc... use one of the AUTH HMAC id's
  * SCTP_HMAC is the HMAC_ID to use
  * SCTP_SIGNATURE_SIZE is the digest length
  */
 #define SCTP_HMAC		SCTP_AUTH_HMAC_ID_SHA1
 #define SCTP_SIGNATURE_SIZE	SCTP_AUTH_DIGEST_LEN_SHA1
 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE
 /*
  * the SCTP protocol signature this includes the version number encoded in
  * the last 4 bits of the signature.
  */
 #define PROTO_SIGNATURE_A	0x30000000
 #define SCTP_VERSION_NUMBER	0x3
 #define MAX_TSN	0xffffffff
 /* how many executions every N tick's */
 #define SCTP_ITERATOR_MAX_AT_ONCE 20
 /* number of clock ticks between iterator executions */
 #define SCTP_ITERATOR_TICKS 1
 /*
  * option: If you comment out the following you will receive the old behavior
  * of obeying cwnd for the fast retransmit algorithm. With this defined a FR
  * happens right away with-out waiting for the flightsize to drop below the
  * cwnd value (which is reduced by the FR to 1/2 the inflight packets).
  */
 #define SCTP_IGNORE_CWND_ON_FR 1
 /*
  * Adds implementors guide behavior to only use newest highest update in SACK
  * gap ack's to figure out if you need to stroke a chunk for FR.
  */
 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1
 /* default max I can burst out after a fast retransmit, 0 disables it */
 #define SCTP_DEF_MAX_BURST 4
 #define SCTP_DEF_HBMAX_BURST 4
 #define SCTP_DEF_FRMAX_BURST 4
 /* RTO calculation flag to say if it
  * is safe to determine local lan or not.
  */
 #define SCTP_RTT_FROM_NON_DATA 0
 #define SCTP_RTT_FROM_DATA     1
 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */
 #define SCTP_FIRST_MBUF_RESV 68
 /* Packet transmit states in the sent field */
 #define SCTP_DATAGRAM_UNSENT		0
 #define SCTP_DATAGRAM_SENT		1
 #define SCTP_DATAGRAM_RESEND1		2	/* not used (in code, but may
 						 * hit this value) */
 #define SCTP_DATAGRAM_RESEND2		3	/* not used (in code, but may
 						 * hit this value) */
 #define SCTP_DATAGRAM_RESEND		4
 #define SCTP_DATAGRAM_ACKED		10010
 #define SCTP_DATAGRAM_MARKED		20010
 #define SCTP_FORWARD_TSN_SKIP		30010
 #define SCTP_DATAGRAM_NR_ACKED		40010
 /* chunk output send from locations */
 #define SCTP_OUTPUT_FROM_USR_SEND       0
 #define SCTP_OUTPUT_FROM_T3       	1
 #define SCTP_OUTPUT_FROM_INPUT_ERROR    2
 #define SCTP_OUTPUT_FROM_CONTROL_PROC   3
 #define SCTP_OUTPUT_FROM_SACK_TMR       4
 #define SCTP_OUTPUT_FROM_SHUT_TMR       5
 #define SCTP_OUTPUT_FROM_HB_TMR         6
 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR   7
 #define SCTP_OUTPUT_FROM_ASCONF_TMR     8
 #define SCTP_OUTPUT_FROM_STRRST_TMR     9
 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR  10
 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR   11
 #define SCTP_OUTPUT_FROM_STRRST_REQ     12
 #define SCTP_OUTPUT_FROM_USR_RCVD       13
 #define SCTP_OUTPUT_FROM_COOKIE_ACK     14
 #define SCTP_OUTPUT_FROM_DRAIN          15
 #define SCTP_OUTPUT_FROM_CLOSING        16
 #define SCTP_OUTPUT_FROM_SOCKOPT        17
 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */
 /* align to 32-bit sizes */
 #define SCTP_SIZE32(x)	((((x) + 3) >> 2) << 2)
 #define IS_SCTP_CONTROL(a) ((a)->chunk_type != SCTP_DATA)
 #define IS_SCTP_DATA(a) ((a)->chunk_type == SCTP_DATA)
 /* SCTP parameter types */
 /*************0x0000 series*************/
 #define SCTP_HEARTBEAT_INFO		0x0001
 #if defined(__Userspace__)
 #define SCTP_CONN_ADDRESS               0x0004
 #endif
 #define SCTP_IPV4_ADDRESS		0x0005
 #define SCTP_IPV6_ADDRESS		0x0006
 #define SCTP_STATE_COOKIE		0x0007
 #define SCTP_UNRECOG_PARAM		0x0008
 #define SCTP_COOKIE_PRESERVE		0x0009
 #define SCTP_HOSTNAME_ADDRESS		0x000b
 #define SCTP_SUPPORTED_ADDRTYPE		0x000c
 /* draft-ietf-stewart-tsvwg-strreset-xxx */
 #define SCTP_STR_RESET_OUT_REQUEST	0x000d
 #define SCTP_STR_RESET_IN_REQUEST	0x000e
 #define SCTP_STR_RESET_TSN_REQUEST	0x000f
 #define SCTP_STR_RESET_RESPONSE		0x0010
 #define SCTP_STR_RESET_ADD_OUT_STREAMS	0x0011
 #define SCTP_STR_RESET_ADD_IN_STREAMS   0x0012
 #define SCTP_MAX_RESET_PARAMS 2
 #define SCTP_STREAM_RESET_TSN_DELTA    0x1000
 /*************0x4000 series*************/
 /*************0x8000 series*************/
 #define SCTP_ECN_CAPABLE		0x8000
 /* draft-ietf-tsvwg-auth-xxx */
 #define SCTP_RANDOM			0x8002
 #define SCTP_CHUNK_LIST			0x8003
 #define SCTP_HMAC_LIST			0x8004
 /*
  * draft-ietf-tsvwg-addip-sctp-xx param=0x8008  len=0xNNNN Byte | Byte | Byte
  * | Byte Byte | Byte ...
  *
  * Where each byte is a chunk type extension supported. For example, to support
  * all chunks one would have (in hex):
  *
  * 80 01 00 09 C0 C1 80 81 82 00 00 00
  *
  * Has the parameter. C0 = PR-SCTP    (RFC3758) C1, 80 = ASCONF (addip draft) 81
  * = Packet Drop 82 = Stream Reset 83 = Authentication
  */
 #define SCTP_SUPPORTED_CHUNK_EXT    0x8008
 /*************0xC000 series*************/
 #define SCTP_PRSCTP_SUPPORTED		0xc000
 /* draft-ietf-tsvwg-addip-sctp */
 #define SCTP_ADD_IP_ADDRESS		0xc001
 #define SCTP_DEL_IP_ADDRESS		0xc002
 #define SCTP_ERROR_CAUSE_IND		0xc003
 #define SCTP_SET_PRIM_ADDR		0xc004
 #define SCTP_SUCCESS_REPORT		0xc005
 #define SCTP_ULP_ADAPTATION		0xc006
 /* behave-nat-draft */
 #define SCTP_HAS_NAT_SUPPORT            0xc007
 #define SCTP_NAT_VTAGS                  0xc008
 /* bits for TOS field */
 #define SCTP_ECT0_BIT		0x02
 #define SCTP_ECT1_BIT		0x01
 #define SCTP_CE_BITS		0x03
 /* below turns off above */
 #define SCTP_FLEXIBLE_ADDRESS	0x20
 #define SCTP_NO_HEARTBEAT	0x40
 /* mask to get sticky */
 #define SCTP_STICKY_OPTIONS_MASK	0x0c
 /*
  * SCTP states for internal state machine XXX (should match "user" values)
  */
 #define SCTP_STATE_EMPTY		0x0000
 #define SCTP_STATE_INUSE		0x0001
 #define SCTP_STATE_COOKIE_WAIT		0x0002
 #define SCTP_STATE_COOKIE_ECHOED	0x0004
 #define SCTP_STATE_OPEN			0x0008
 #define SCTP_STATE_SHUTDOWN_SENT	0x0010
 #define SCTP_STATE_SHUTDOWN_RECEIVED	0x0020
 #define SCTP_STATE_SHUTDOWN_ACK_SENT	0x0040
 #define SCTP_STATE_SHUTDOWN_PENDING	0x0080
 #define SCTP_STATE_CLOSED_SOCKET	0x0100
 #define SCTP_STATE_ABOUT_TO_BE_FREED    0x0200
 #define SCTP_STATE_PARTIAL_MSG_LEFT     0x0400
 #define SCTP_STATE_WAS_ABORTED          0x0800
 #define SCTP_STATE_IN_ACCEPT_QUEUE      0x1000
 #define SCTP_STATE_MASK			0x007f
 #define SCTP_GET_STATE(asoc)	((asoc)->state & SCTP_STATE_MASK)
 #define SCTP_SET_STATE(asoc, newstate)  ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) |  newstate)
 #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate)
 #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate)
 /* SCTP reachability state for each address */
 #define SCTP_ADDR_REACHABLE		0x001
 #define SCTP_ADDR_NO_PMTUD              0x002
 #define SCTP_ADDR_NOHB			0x004
 #define SCTP_ADDR_BEING_DELETED		0x008
 #define SCTP_ADDR_NOT_IN_ASSOC		0x010
 #define SCTP_ADDR_OUT_OF_SCOPE		0x080
 #define SCTP_ADDR_UNCONFIRMED		0x200
 #define SCTP_ADDR_REQ_PRIMARY           0x400
 /* JRS 5/13/07 - Added potentially failed state for CMT PF */
 #define SCTP_ADDR_PF                    0x800
 /* bound address types (e.g. valid address types to allow) */
 #define SCTP_BOUND_V6		0x01
 #define SCTP_BOUND_V4		0x02
 /*
  * what is the default number of mbufs in a chain I allow before switching to
  * a cluster
  */
 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5
 /* How long a cookie lives in milli-seconds */
 #define SCTP_DEFAULT_COOKIE_LIFE	60000
 /* Maximum the mapping array will  grow to (TSN mapping array) */
 #define SCTP_MAPPING_ARRAY	512
 /* size of the inital malloc on the mapping array */
 #define SCTP_INITIAL_MAPPING_ARRAY  16
 /* how much we grow the mapping array each call */
 #define SCTP_MAPPING_ARRAY_INCR     32
 /*
  * Here we define the timer types used by the implementation as arguments in
  * the set/get timer type calls.
  */
 #define SCTP_TIMER_INIT 	0
 #define SCTP_TIMER_RECV 	1
 #define SCTP_TIMER_SEND 	2
 #define SCTP_TIMER_HEARTBEAT	3
 #define SCTP_TIMER_PMTU		4
 #define SCTP_TIMER_MAXSHUTDOWN	5
 #define SCTP_TIMER_SIGNATURE	6
 /*
  * number of timer types in the base SCTP structure used in the set/get and
  * has the base default.
  */
 #define SCTP_NUM_TMRS	7
 /* timer types */
 #define SCTP_TIMER_TYPE_NONE		0
 #define SCTP_TIMER_TYPE_SEND		1
 #define SCTP_TIMER_TYPE_INIT		2
 #define SCTP_TIMER_TYPE_RECV		3
 #define SCTP_TIMER_TYPE_SHUTDOWN	4
 #define SCTP_TIMER_TYPE_HEARTBEAT	5
 #define SCTP_TIMER_TYPE_COOKIE		6
 #define SCTP_TIMER_TYPE_NEWCOOKIE	7
 #define SCTP_TIMER_TYPE_PATHMTURAISE	8
 #define SCTP_TIMER_TYPE_SHUTDOWNACK	9
 #define SCTP_TIMER_TYPE_ASCONF		10
 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD	11
 #define SCTP_TIMER_TYPE_AUTOCLOSE	12
 #define SCTP_TIMER_TYPE_EVENTWAKE	13
 #define SCTP_TIMER_TYPE_STRRESET        14
 #define SCTP_TIMER_TYPE_INPKILL         15
 #define SCTP_TIMER_TYPE_ASOCKILL        16
 #define SCTP_TIMER_TYPE_ADDR_WQ         17
 #define SCTP_TIMER_TYPE_ZERO_COPY       18
 #define SCTP_TIMER_TYPE_ZCOPY_SENDQ     19
 #define SCTP_TIMER_TYPE_PRIM_DELETED    20
 /* add new timers here - and increment LAST */
 #define SCTP_TIMER_TYPE_LAST            21
 #define SCTP_IS_TIMER_TYPE_VALID(t)	(((t) > SCTP_TIMER_TYPE_NONE) && \
 					 ((t) < SCTP_TIMER_TYPE_LAST))
 #if defined(__APPLE__)
 /* Number of ticks to run the main timer at in msec */
 #define SCTP_MAIN_TIMER_DEFAULT		10
 #endif
 /* max number of TSN's dup'd that I will hold */
 #define SCTP_MAX_DUP_TSNS	20
 /*
  * Here we define the types used when setting the retry amounts.
  */
 /* How many drop re-attempts we make on  INIT/COOKIE-ECHO */
 #define SCTP_RETRY_DROPPED_THRESH 4
 /*
  * Maxmium number of chunks a single association can have on it. Note that
  * this is a squishy number since the count can run over this if the user
  * sends a large message down .. the fragmented chunks don't count until
  * AFTER the message is on queue.. it would be the next send that blocks
  * things. This number will get tuned up at boot in the sctp_init and use the
  * number of clusters as a base. This way high bandwidth environments will
  * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks
  */
 #ifdef __Panda__
 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 10240
 #else
 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512
 #endif
 /* The conversion from time to ticks and vice versa is done by rounding
  * upwards. This way we can test in the code the time to be positive and
  * know that this corresponds to a positive number of ticks.
  */
 #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000))
 #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz))
 #define SEC_TO_TICKS(x) ((x) * hz)
 #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz)
 /*
  * Basically the minimum amount of time before I do a early FR. Making this
  * value to low will cause duplicate retransmissions.
  */
 #define SCTP_MINFR_MSEC_TIMER 250
 /* The floor this value is allowed to fall to when starting a timer. */
 #define SCTP_MINFR_MSEC_FLOOR 20
 /* init timer def = 1 sec */
 #define SCTP_INIT_SEC	1
 /* send timer def = 1 seconds */
 #define SCTP_SEND_SEC	1
 /* recv timer def = 200ms  */
 #define SCTP_RECV_MSEC	200
 /* 30 seconds + RTO (in ms) */
 #define SCTP_HB_DEFAULT_MSEC	30000
 /* Max time I will wait for Shutdown to complete */
 #define SCTP_DEF_MAX_SHUTDOWN_SEC 180
 /*
  * This is how long a secret lives, NOT how long a cookie lives how many
  * ticks the current secret will live.
  */
 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600
 #define SCTP_RTO_UPPER_BOUND	(60000)	/* 60 sec in ms */
 #define SCTP_RTO_LOWER_BOUND	(1000)	/* 1 sec is ms */
 #define SCTP_RTO_INITIAL	(3000)	/* 3 sec in ms */
 #define SCTP_INP_KILL_TIMEOUT 20	/* number of ms to retry kill of inpcb */
 #define SCTP_ASOC_KILL_TIMEOUT 10	/* number of ms to retry kill of inpcb */
 #define SCTP_DEF_MAX_INIT		8
 #define SCTP_DEF_MAX_SEND		10
 #define SCTP_DEF_MAX_PATH_RTX		5
 #define SCTP_DEF_PATH_PF_THRESHOLD	SCTP_DEF_MAX_PATH_RTX
 #define SCTP_DEF_PMTU_RAISE_SEC	600	/* 10 min between raise attempts */
 /* How many streams I request initally by default */
 #define SCTP_OSTREAM_INITIAL 10
 #define SCTP_ISTREAM_INITIAL 2048
 /*
  * How many smallest_mtu's need to increase before a window update sack is
  * sent (should be a power of 2).
  */
 /* Send window update (incr * this > hiwat). Should be a power of 2 */
 #define SCTP_MINIMAL_RWND		(4096)	/* minimal rwnd */
 #define SCTP_ADDRMAX		16
 /* SCTP DEBUG Switch parameters */
 #define SCTP_DEBUG_TIMER1	0x00000001
 #define SCTP_DEBUG_TIMER2	0x00000002	/* unused */
 #define SCTP_DEBUG_TIMER3	0x00000004	/* unused */
 #define SCTP_DEBUG_TIMER4	0x00000008
 #define SCTP_DEBUG_OUTPUT1	0x00000010
 #define SCTP_DEBUG_OUTPUT2	0x00000020
 #define SCTP_DEBUG_OUTPUT3	0x00000040
 #define SCTP_DEBUG_OUTPUT4	0x00000080
 #define SCTP_DEBUG_UTIL1	0x00000100
 #define SCTP_DEBUG_UTIL2	0x00000200	/* unused */
 #define SCTP_DEBUG_AUTH1	0x00000400
 #define SCTP_DEBUG_AUTH2	0x00000800	/* unused */
 #define SCTP_DEBUG_INPUT1	0x00001000
 #define SCTP_DEBUG_INPUT2	0x00002000
 #define SCTP_DEBUG_INPUT3	0x00004000
 #define SCTP_DEBUG_INPUT4	0x00008000	/* unused */
 #define SCTP_DEBUG_ASCONF1	0x00010000
 #define SCTP_DEBUG_ASCONF2	0x00020000
 #define SCTP_DEBUG_OUTPUT5	0x00040000	/* unused */
 #define SCTP_DEBUG_XXX		0x00080000	/* unused */
 #define SCTP_DEBUG_PCB1		0x00100000
 #define SCTP_DEBUG_PCB2		0x00200000	/* unused */
 #define SCTP_DEBUG_PCB3		0x00400000
 #define SCTP_DEBUG_PCB4		0x00800000
 #define SCTP_DEBUG_INDATA1	0x01000000
 #define SCTP_DEBUG_INDATA2	0x02000000	/* unused */
 #define SCTP_DEBUG_INDATA3	0x04000000	/* unused */
 #define SCTP_DEBUG_CRCOFFLOAD	0x08000000	/* unused */
 #define SCTP_DEBUG_USRREQ1	0x10000000	/* unused */
 #define SCTP_DEBUG_USRREQ2	0x20000000	/* unused */
 #define SCTP_DEBUG_PEEL1	0x40000000
 #if defined(__Userspace__)
 #define SCTP_DEBUG_USR 		0x80000000
 #else
 #define SCTP_DEBUG_XXXXX	0x80000000	/* unused */
 #endif
 #define SCTP_DEBUG_ALL		0x7ff3ffff
 #define SCTP_DEBUG_NOISY	0x00040000
 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */
 #define SCTP_SWS_SENDER_DEF	1420
 /*
  * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1
  * would be hiwat/2 etc.
  */
 /* What receiver needs to see in sockbuf or we tell peer its 1 */
 #define SCTP_SWS_RECEIVER_DEF	3000
 #define SCTP_INITIAL_CWND 4380
 #define SCTP_DEFAULT_MTU 1500 /* emergency default MTU */
 /* amount peer is obligated to have in rwnd or I will abort */
 #define SCTP_MIN_RWND	1500
 #define SCTP_DEFAULT_MAXSEGMENT 65535
 #define SCTP_CHUNK_BUFFER_SIZE	512
 #define SCTP_PARAM_BUFFER_SIZE	512
 /* small chunk store for looking at chunk_list in auth */
 #define SCTP_SMALL_CHUNK_STORE 260
 #define SCTP_HOW_MANY_SECRETS	2	/* how many secrets I keep */
 #define SCTP_NUMBER_OF_SECRETS	8	/* or 8 * 4 = 32 octets */
 #define SCTP_SECRET_SIZE	32	/* number of octets in a 256 bits */
 /*
  * SCTP upper layer notifications
  */
 #define SCTP_NOTIFY_ASSOC_UP                     1
 #define SCTP_NOTIFY_ASSOC_DOWN                   2
 #define SCTP_NOTIFY_INTERFACE_DOWN               3
 #define SCTP_NOTIFY_INTERFACE_UP                 4
 #define SCTP_NOTIFY_SENT_DG_FAIL                 5
 #define SCTP_NOTIFY_UNSENT_DG_FAIL               6
 #define SCTP_NOTIFY_SPECIAL_SP_FAIL              7
 #define SCTP_NOTIFY_ASSOC_LOC_ABORTED            8
 #define SCTP_NOTIFY_ASSOC_REM_ABORTED            9
 #define SCTP_NOTIFY_ASSOC_RESTART               10
 #define SCTP_NOTIFY_PEER_SHUTDOWN               11
 #define SCTP_NOTIFY_ASCONF_ADD_IP               12
 #define SCTP_NOTIFY_ASCONF_DELETE_IP            13
 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY          14
 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 15
 #define SCTP_NOTIFY_INTERFACE_CONFIRMED         16
 #define SCTP_NOTIFY_STR_RESET_RECV              17
 #define SCTP_NOTIFY_STR_RESET_SEND              18
 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT        19
 #define SCTP_NOTIFY_STR_RESET_FAILED_IN         20
 #define SCTP_NOTIFY_STR_RESET_DENIED_OUT        21
 #define SCTP_NOTIFY_STR_RESET_DENIED_IN         22
 #define SCTP_NOTIFY_AUTH_NEW_KEY                23
 #define SCTP_NOTIFY_AUTH_FREE_KEY               24
 #define SCTP_NOTIFY_NO_PEER_AUTH                25
 #define SCTP_NOTIFY_SENDER_DRY                  26
 #define SCTP_NOTIFY_REMOTE_ERROR                27
 /* This is the value for messages that are NOT completely
  * copied down where we will start to split the message.
  * So, with our default, we split only if the piece we
  * want to take will fill up a full MTU (assuming
  * a 1500 byte MTU).
  */
 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904
 /* ABORT CODES and other tell-tale location
  * codes are generated by adding the below
  * to the instance id.
  */
 /* File defines */
 #define SCTP_FROM_SCTP_INPUT   0x10000000
 #define SCTP_FROM_SCTP_PCB     0x20000000
 #define SCTP_FROM_SCTP_INDATA  0x30000000
 #define SCTP_FROM_SCTP_TIMER   0x40000000
 #define SCTP_FROM_SCTP_USRREQ  0x50000000
 #define SCTP_FROM_SCTPUTIL     0x60000000
 #define SCTP_FROM_SCTP6_USRREQ 0x70000000
 #define SCTP_FROM_SCTP_ASCONF  0x80000000
 #define SCTP_FROM_SCTP_OUTPUT  0x90000000
 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000
 #define SCTP_FROM_SCTP_PANDA   0xb0000000
 #define SCTP_FROM_SCTP_SYSCTL  0xc0000000
 /* Location ID's */
 #define SCTP_LOC_1  0x00000001
 #define SCTP_LOC_2  0x00000002
 #define SCTP_LOC_3  0x00000003
 #define SCTP_LOC_4  0x00000004
 #define SCTP_LOC_5  0x00000005
 #define SCTP_LOC_6  0x00000006
 #define SCTP_LOC_7  0x00000007
 #define SCTP_LOC_8  0x00000008
 #define SCTP_LOC_9  0x00000009
 #define SCTP_LOC_10 0x0000000a
 #define SCTP_LOC_11 0x0000000b
 #define SCTP_LOC_12 0x0000000c
 #define SCTP_LOC_13 0x0000000d
 #define SCTP_LOC_14 0x0000000e
 #define SCTP_LOC_15 0x0000000f
 #define SCTP_LOC_16 0x00000010
 #define SCTP_LOC_17 0x00000011
 #define SCTP_LOC_18 0x00000012
 #define SCTP_LOC_19 0x00000013
 #define SCTP_LOC_20 0x00000014
 #define SCTP_LOC_21 0x00000015
 #define SCTP_LOC_22 0x00000016
 #define SCTP_LOC_23 0x00000017
 #define SCTP_LOC_24 0x00000018
 #define SCTP_LOC_25 0x00000019
 #define SCTP_LOC_26 0x0000001a
 #define SCTP_LOC_27 0x0000001b
 #define SCTP_LOC_28 0x0000001c
 #define SCTP_LOC_29 0x0000001d
 #define SCTP_LOC_30 0x0000001e
 #define SCTP_LOC_31 0x0000001f
 #define SCTP_LOC_32 0x00000020
 #define SCTP_LOC_33 0x00000021
 /* Free assoc codes */
 #define SCTP_NORMAL_PROC      0
 #define SCTP_PCBFREE_NOFORCE  1
 #define SCTP_PCBFREE_FORCE    2
 /* From codes for adding addresses */
 #define SCTP_ADDR_IS_CONFIRMED 8
 #define SCTP_ADDR_DYNAMIC_ADDED 6
 #define SCTP_IN_COOKIE_PROC 100
 #define SCTP_ALLOC_ASOC  1
 #define SCTP_LOAD_ADDR_2 2
 #define SCTP_LOAD_ADDR_3 3
 #define SCTP_LOAD_ADDR_4 4
 #define SCTP_LOAD_ADDR_5 5
 #define SCTP_DONOT_SETSCOPE 0
 #define SCTP_DO_SETSCOPE 1
 /* This value determines the default for when
  * we try to add more on the send queue., if
  * there is room. This prevents us from cycling
  * into the copy_resume routine to often if
  * we have not got enough space to add a decent
  * enough size message. Note that if we have enough
  * space to complete the message copy we will always
  * add to the message, no matter what the size. Its
  * only when we reach the point that we have some left
  * to add, there is only room for part of it that we
  * will use this threshold. Its also a sysctl.
  */
 #define SCTP_DEFAULT_ADD_MORE 1452
 #ifndef SCTP_PCBHASHSIZE
 /* default number of association hash buckets in each endpoint */
 #define SCTP_PCBHASHSIZE 256
 #endif
 #ifndef SCTP_TCBHASHSIZE
 #define SCTP_TCBHASHSIZE 1024
 #endif
 #ifndef SCTP_CHUNKQUEUE_SCALE
 #define SCTP_CHUNKQUEUE_SCALE 10
 #endif
 #ifdef __FreeBSD__
 /* clock variance is 1 ms */
 #define SCTP_CLOCK_GRANULARITY	1
 #else
 /* clock variance is 10 ms */
 #define SCTP_CLOCK_GRANULARITY	10
 #endif
 #define IP_HDR_SIZE 40		/* we use the size of a IP6 header here this
 				 * detracts a small amount for ipv4 but it
 				 * simplifies the ipv6 addition */
 /* Argument magic number for sctp_inpcb_free() */
 /* third argument */
 #define SCTP_CALLED_DIRECTLY_NOCMPSET     0
 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE  1
 #define SCTP_CALLED_FROM_INPKILL_TIMER    2
 /* second argument */
 #define SCTP_FREE_SHOULD_USE_ABORT          1
 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0
 #ifndef IPPROTO_SCTP
 #define IPPROTO_SCTP 132	/* the Official IANA number :-) */
 #endif				/* !IPPROTO_SCTP */
 #define SCTP_MAX_DATA_BUNDLING		256
 /* modular comparison */
 /* See RFC 1982 for details. */
 #define SCTP_SSN_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \
                            ((a > b) && ((uint16_t)(a - b) < (1U<<15))))
 #define SCTP_SSN_GE(a, b) (SCTP_SSN_GT(a, b) || (a == b))
 #define SCTP_TSN_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \
                            ((a > b) && ((uint32_t)(a - b) < (1U<<31))))
 #define SCTP_TSN_GE(a, b) (SCTP_TSN_GT(a, b) || (a == b))
 /* Mapping array manipulation routines */
 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01)
 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07))))
 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff))
 #define SCTP_CALC_TSN_TO_GAP(gap, tsn, mapping_tsn) do { \
 	                if (tsn >= mapping_tsn) { \
 						gap = tsn - mapping_tsn; \
 					} else { \
 						gap = (MAX_TSN - mapping_tsn) + tsn + 1; \
 					} \
                   } while (0)
 #define SCTP_RETRAN_DONE -1
 #define SCTP_RETRAN_EXIT -2
 /*
  * This value defines the number of vtag block time wait entry's per list
  * element.  Each entry will take 2 4 byte ints (and of course the overhead
  * of the next pointer as well). Using 15 as an example will yield * ((8 *
  * 15) + 8) or 128 bytes of overhead for each timewait block that gets
  * initialized. Increasing it to 31 would yeild 256 bytes per block.
  */
 #define SCTP_NUMBER_IN_VTAG_BLOCK 15
 /*
  * If we use the STACK option, we have an array of this size head pointers.
  * This array is mod'd the with the size to find which bucket and then all
  * entries must be searched to see if the tag is in timed wait. If so we
  * reject it.
  */
 #define SCTP_STACK_VTAG_HASH_SIZE   32
 /*
  * Number of seconds of time wait for a vtag.
  */
 #define SCTP_TIME_WAIT 60
 /* How many micro seconds is the cutoff from
  * local lan type rtt's
  */
  /*
   * We allow 900us for the rtt.
   */
 #define SCTP_LOCAL_LAN_RTT 900
 #define SCTP_LAN_UNKNOWN  0
 #define SCTP_LAN_LOCAL    1
 #define SCTP_LAN_INTERNET 2
 #define SCTP_SEND_BUFFER_SPLITTING 0x00000001
 #define SCTP_RECV_BUFFER_SPLITTING 0x00000002
 /* The system retains a cache of free chunks such to
  * cut down on calls the memory allocation system. There
  * is a per association limit of free items and a overall
  * system limit. If either one gets hit then the resource
  * stops being cached.
  */
 #define SCTP_DEF_ASOC_RESC_LIMIT 10
 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000
 /*-
  * defines for socket lock states.
  * Used by __APPLE__ and SCTP_SO_LOCK_TESTING
  */
 #define SCTP_SO_LOCKED		1
 #define SCTP_SO_NOT_LOCKED	0
 #define SCTP_HOLDS_LOCK 1
 #define SCTP_NOT_LOCKED 0
 /*-
  * For address locks, do we hold the lock?
  */
 #define SCTP_ADDR_LOCKED 1
 #define SCTP_ADDR_NOT_LOCKED 0
 #define IN4_ISPRIVATE_ADDRESS(a) \
    ((((uint8_t *)&(a)->s_addr)[0] == 10) || \
     ((((uint8_t *)&(a)->s_addr)[0] == 172) && \
      (((uint8_t *)&(a)->s_addr)[1] >= 16) && \
      (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \
     ((((uint8_t *)&(a)->s_addr)[0] == 192) && \
      (((uint8_t *)&(a)->s_addr)[1] == 168)))
 #define IN4_ISLOOPBACK_ADDRESS(a) \
     ((((uint8_t *)&(a)->s_addr)[0] == 127) && \
      (((uint8_t *)&(a)->s_addr)[1] == 0) && \
      (((uint8_t *)&(a)->s_addr)[2] == 0) && \
      (((uint8_t *)&(a)->s_addr)[3] == 1))
 #define IN4_ISLINKLOCAL_ADDRESS(a) \
     ((((uint8_t *)&(a)->s_addr)[0] == 169) && \
      (((uint8_t *)&(a)->s_addr)[1] == 254))
 #if defined(__Userspace__)
 #if defined(__Userspace_os_Windows)
 #define SCTP_GETTIME_TIMEVAL(x)	getwintimeofday(x)
 #define SCTP_GETPTIME_TIMEVAL(x) getwintimeofday(x) /* this doesn't seem to ever be used.. */
 #else
 #define SCTP_GETTIME_TIMEVAL(x)	gettimeofday(x, NULL)
 #define SCTP_GETPTIME_TIMEVAL(x) gettimeofday(x, NULL)
 #endif
 #endif
 #if defined(_KERNEL)
 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x))
 #define SCTP_GETPTIME_TIMEVAL(x) (microuptime(x))
 #endif
 #if defined(_KERNEL) || defined(__Userspace__)
 #define sctp_sowwakeup(inp, so) \
 do { \
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 		inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 	} else { \
 		sowwakeup(so); \
 	} \
 } while (0)
 #if defined(__FreeBSD__) || defined(__Windows__) || defined(__Userspace__)
 #define sctp_sowwakeup_locked(inp, so) \
 do { \
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
                 SOCKBUF_UNLOCK(&((so)->so_snd)); \
 		inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 	} else { \
 		sowwakeup_locked(so); \
 	} \
 } while (0)
 #else
 #define sctp_sowwakeup_locked(inp, so) \
 do { \
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
                 SOCKBUF_UNLOCK(&((so)->so_snd)); \
 		inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \
 	} else { \
 		sowwakeup(so); \
 	} \
 } while (0)
 #endif
 #define sctp_sorwakeup(inp, so) \
 do { \
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 		inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
 	} else { \
 		sorwakeup(so); \
 	} \
 } while (0)
 #if defined(__FreeBSD__) || defined(__Windows__) || defined(__Userspace__)
 #define sctp_sorwakeup_locked(inp, so) \
 do { \
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 		inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
                 SOCKBUF_UNLOCK(&((so)->so_rcv)); \
 	} else { \
 		sorwakeup_locked(so); \
 	} \
 } while (0)
 #else
 #define sctp_sorwakeup_locked(inp, so) \
 do { \
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
 		inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \
                 SOCKBUF_UNLOCK(&((so)->so_rcv)); \
 	} else { \
 		sorwakeup(so); \
 	} \
 } while (0)
 #endif
 #endif				/* _KERNEL || __Userspace__*/
 #endif

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netwerk/sctp/src/netinet/sctp_constants.h@ac0c01689b40 (annotated)

netwerk/sctp/src/netinet/sctp_constants.h