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 /*-

  * 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