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+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * 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.
+ */
+
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+#endif
+
+#ifndef _NETINET_SCTP_CONSTANTS_H_
+#define _NETINET_SCTP_CONSTANTS_H_
+
+#if defined(_WIN32) && defined(__Userspace__)
+extern void getwintimeofday(struct timeval *tv);
+
+#endif
+/* IANA assigned port number for SCTP over UDP encapsulation */
+#define SCTP_OVER_UDP_TUNNELING_PORT 9899
+
+/* 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)
+
+/* Largest length of a chunk */
+#define SCTP_MAX_CHUNK_LENGTH 0xffff
+/* Largest length of an error cause */
+#define SCTP_MAX_CAUSE_LENGTH 0xffff
+/* 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
+
+/* 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 MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */
+#define SCTP_DEFAULT_MULTIPLE_ASCONFS 0
+
+/*
+ * Threshold 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
+
+#define PR_SCTP_UNORDERED_FLAG 0x0001
+
+/* 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) && ((a)->chunk_type != SCTP_IDATA))
+#define IS_SCTP_DATA(a) (((a)->chunk_type == SCTP_DATA) || ((a)->chunk_type == SCTP_IDATA))
+
+/* 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
+
+/* RFC 6525 */
+#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
+#define SCTP_ZERO_CHECKSUM_ACCEPTABLE 0x8001
+/* RFC 4895 */
+#define SCTP_RANDOM 0x8002
+#define SCTP_CHUNK_LIST 0x8003
+#define SCTP_HMAC_LIST 0x8004
+/* RFC 4820 */
+#define SCTP_PAD 0x8005
+/* RFC 5061 */
+#define SCTP_SUPPORTED_CHUNK_EXT 0x8008
+
+/*************0xC000 series*************/
+#define SCTP_PRSCTP_SUPPORTED 0xc000
+/* RFC 5061 */
+#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
+ */
+#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(_stcb) \
+ ((_stcb)->asoc.state & SCTP_STATE_MASK)
+#define SCTP_SET_STATE(_stcb, _state) \
+ sctp_set_state(_stcb, _state)
+#define SCTP_CLEAR_SUBSTATE(_stcb, _substate) \
+ (_stcb)->asoc.state &= ~(_substate)
+#define SCTP_ADD_SUBSTATE(_stcb, _substate) \
+ sctp_add_substate(_stcb, _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 initial 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_STRRESET 13
+#define SCTP_TIMER_TYPE_INPKILL 14
+#define SCTP_TIMER_TYPE_ASOCKILL 15
+#define SCTP_TIMER_TYPE_ADDR_WQ 16
+#define SCTP_TIMER_TYPE_PRIM_DELETED 17
+/* add new timers here - and increment LAST */
+#define SCTP_TIMER_TYPE_LAST 18
+
+#define SCTP_IS_TIMER_TYPE_VALID(t) (((t) > SCTP_TIMER_TYPE_NONE) && \
+ ((t) < SCTP_TIMER_TYPE_LAST))
+
+#if defined(__APPLE__) && !defined(__Userspace__)
+/* 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
+ */
+#define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512
+
+/*
+ * 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
+
+/*
+ * 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 (1000) /* 1 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 initially 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_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
+#define SCTP_NOTIFY_ASSOC_TIMEDOUT 28
+
+/* 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
+
+/* Maximum length of diagnostic information in error causes */
+#if defined(__Userspace__)
+#define SCTP_DIAG_INFO_LEN 256
+#else
+#define SCTP_DIAG_INFO_LEN 128
+#endif
+
+/* 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_SYSCTL 0xb0000000
+#define SCTP_FROM_SCTP_CC_FUNCTIONS 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
+#define SCTP_LOC_34 0x00000022
+#define SCTP_LOC_35 0x00000023
+#define SCTP_LOC_36 0x00000024
+#define SCTP_LOC_37 0x00000025
+
+/* 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
+
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+/* 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_UINT16_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \
+ ((a > b) && ((uint16_t)(a - b) < (1U<<15))))
+#define SCTP_UINT16_GE(a, b) (SCTP_UINT16_GT(a, b) || (a == b))
+#define SCTP_UINT32_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \
+ ((a > b) && ((uint32_t)(a - b) < (1U<<31))))
+#define SCTP_UINT32_GE(a, b) (SCTP_UINT32_GT(a, b) || (a == b))
+
+#define SCTP_SSN_GT(a, b) SCTP_UINT16_GT(a, b)
+#define SCTP_SSN_GE(a, b) SCTP_UINT16_GE(a, b)
+#define SCTP_TSN_GT(a, b) SCTP_UINT32_GT(a, b)
+#define SCTP_TSN_GE(a, b) SCTP_UINT32_GE(a, b)
+#define SCTP_MID_GT(i, a, b) (((i) == 1) ? SCTP_UINT32_GT(a, b) : SCTP_UINT16_GT((uint16_t)a, (uint16_t)b))
+#define SCTP_MID_GE(i, a, b) (((i) == 1) ? SCTP_UINT32_GE(a, b) : SCTP_UINT16_GE((uint16_t)a, (uint16_t)b))
+#define SCTP_MID_EQ(i, a, b) (((i) == 1) ? a == b : (uint16_t)a == (uint16_t)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 yield 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__
+ */
+#define SCTP_SO_LOCKED 1
+#define SCTP_SO_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)
+
+#define IN4_ISLINKLOCAL_ADDRESS(a) \
+ ((((uint8_t *)&(a)->s_addr)[0] == 169) && \
+ (((uint8_t *)&(a)->s_addr)[1] == 254))
+
+/* Maximum size of optval for IPPROTO_SCTP level socket options. */
+#define SCTP_SOCKET_OPTION_LIMIT (64 * 1024)
+
+#if defined(__Userspace__)
+#if defined(_WIN32)
+#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) { \
+ sctp_pcb_add_flags(inp, SCTP_PCB_FLAGS_WAKEOUTPUT); \
+ } else { \
+ sowwakeup(so); \
+ } \
+} while (0)
+
+#if defined(__FreeBSD__) || defined(_WIN32) || defined(__Userspace__)
+#define sctp_sowwakeup_locked(inp, so) \
+do { \
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
+ sctp_pcb_add_flags(inp, SCTP_PCB_FLAGS_WAKEOUTPUT); \
+ SOCKBUF_UNLOCK(&((so)->so_snd)); \
+ } else { \
+ sowwakeup_locked(so); \
+ } \
+} while (0)
+#else
+#define sctp_sowwakeup_locked(inp, so) \
+do { \
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
+ sctp_pcb_add_flags(inp, SCTP_PCB_FLAGS_WAKEOUTPUT); \
+ SOCKBUF_UNLOCK(&((so)->so_snd)); \
+ } else { \
+ sowwakeup(so); \
+ } \
+} while (0)
+#endif
+
+#define sctp_sorwakeup(inp, so) \
+do { \
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
+ sctp_pcb_add_flags(inp, SCTP_PCB_FLAGS_WAKEINPUT); \
+ } else { \
+ sorwakeup(so); \
+ } \
+} while (0)
+
+#if defined(__FreeBSD__) || defined(_WIN32) || defined(__Userspace__)
+#define sctp_sorwakeup_locked(inp, so) \
+do { \
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \
+ sctp_pcb_add_flags(inp, 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) { \
+ sctp_pcb_add_flags(inp, SCTP_PCB_FLAGS_WAKEINPUT); \
+ SOCKBUF_UNLOCK(&((so)->so_rcv)); \
+ } else { \
+ sorwakeup(so); \
+ } \
+} while (0)
+#endif
+
+#endif /* _KERNEL || __Userspace__*/
+#endif