sctpconstants.h

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/* @(#) $Header: /tcpdump/master/tcpdump/sctpConstants.h,v 1.4 2003-06-03 23:49:23 guy Exp $ (LBL) */

/* SCTP reference Implementation Copyright (C) 1999 Cisco And Motorola
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. Neither the name of Cisco nor of Motorola may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * This file is part of the SCTP reference Implementation
 *
 *
 * Please send any bug reports or fixes you make to one of the following email
 * addresses:
 *
 * [e-mail]
 * [e-mail]
 * [e-mail]
 *
 * Any bugs reported given to us we will try to fix... any fixes shared will
 * be incorperated into the next SCTP release.
 */


#ifndef __sctpConstants_h__
#define __sctpConstants_h__


  /* If you wish to use MD5 instead of SLA uncomment the line
   * below. Why you would like to do this:
   * a) There may be IPR on SHA-1, or so the FIP-180-1 page says,
   * b) MD5 is 3 times faster (has coded here).
   *
   * The disadvantage is, it is thought that MD5 has been
   * cracked... see RFC2104.
   */
/*#define USE_MD5 1*/

/* 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
#define MAX_SEQ 0xffff

/* 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
/* default max I can burst out after a fast retransmit */
#define SCTP_DEF_MAX_BURST 4

/* Packet transmit states in the sent
 * field in the SCTP_transmitOnQueue struct
 */
#define SCTP_DATAGRAM_UNSENT 		0
#define SCTP_DATAGRAM_SENT   		1
#define SCTP_DATAGRAM_RESEND1		2 /* not used */
#define SCTP_DATAGRAM_RESEND2		3 /* not used */
#define SCTP_DATAGRAM_RESEND3		4 /* not used */
#define SCTP_DATAGRAM_RESEND		5
#define SCTP_DATAGRAM_ACKED		10010
#define SCTP_DATAGRAM_INBOUND		10011
#define SCTP_READY_TO_TRANSMIT		10012
#define SCTP_DATAGRAM_MARKED		20010

#define MAX_FSID 64	/* debug 5 ints used for cc dynamic tracking */

/* The valid defines for all message
 * types know to SCTP. 0 is reserved
 */
#define SCTP_MSGTYPE_MASK	0xff

#define SCTP_DATA		0x00
#define SCTP_INITIATION		0x01
#define SCTP_INITIATION_ACK	0x02
#define SCTP_SELECTIVE_ACK	0x03
#define SCTP_HEARTBEAT_REQUEST	0x04
#define SCTP_HEARTBEAT_ACK	0x05
#define SCTP_ABORT_ASSOCIATION	0x06
#define SCTP_SHUTDOWN		0x07
#define SCTP_SHUTDOWN_ACK	0x08
#define SCTP_OPERATION_ERR	0x09
#define SCTP_COOKIE_ECHO	0x0a
#define SCTP_COOKIE_ACK         0x0b
#define SCTP_ECN_ECHO		0x0c
#define SCTP_ECN_CWR		0x0d
#define SCTP_SHUTDOWN_COMPLETE	0x0e
#define SCTP_FORWARD_CUM_TSN    0xc0
#define SCTP_RELIABLE_CNTL      0xc1
#define SCTP_RELIABLE_CNTL_ACK  0xc2

/* ABORT and SHUTDOWN COMPLETE FLAG */
#define SCTP_HAD_NO_TCB		0x01

/* Data Chuck Specific Flags */
#define SCTP_DATA_FRAG_MASK	0x03
#define SCTP_DATA_MIDDLE_FRAG	0x00
#define SCTP_DATA_LAST_FRAG	0x01
#define SCTP_DATA_FIRST_FRAG	0x02
#define SCTP_DATA_NOT_FRAG	0x03
#define SCTP_DATA_UNORDERED	0x04

#define SCTP_CRC_ENABLE_BIT	0x01	/* lower bit of reserved */

#define isSCTPControl(a) (a->chunkID != SCTP_DATA)
#define isSCTPData(a) (a->chunkID == SCTP_DATA)

/* sctp parameter types for init/init-ack */

#define SCTP_IPV4_PARAM_TYPE    0x0005
#define SCTP_IPV6_PARAM_TYPE    0x0006
#define SCTP_RESPONDER_COOKIE   0x0007
#define SCTP_UNRECOG_PARAM	0x0008
#define SCTP_COOKIE_PRESERVE    0x0009
#define SCTP_HOSTNAME_VIA_DNS   0x000b
#define SCTP_RESTRICT_ADDR_TO	0x000c

#define SCTP_ECN_I_CAN_DO_ECN	0x8000
#define SCTP_OPERATION_SUCCEED	0x4001
#define SCTP_ERROR_NOT_EXECUTED	0x4002

#define SCTP_UNRELIABLE_STRM    0xc000
#define SCTP_ADD_IP_ADDRESS     0xc001
#define SCTP_DEL_IP_ADDRESS     0xc002
#define SCTP_STRM_FLOW_LIMIT    0xc003
#define SCTP_PARTIAL_CSUM       0xc004
#define SCTP_ERROR_CAUSE_TLV	0xc005
#define SCTP_MIT_STACK_NAME	0xc006
#define SCTP_SETADDRESS_PRIMARY 0xc007

/* bits for TOS field */
#define SCTP_ECT_BIT		0x02
#define SCTP_CE_BIT		0x01

/* error codes */
#define SCTP_OP_ERROR_NO_ERROR		0x0000
#define SCTP_OP_ERROR_INV_STRM		0x0001
#define SCTP_OP_ERROR_MISS_PARAM	0x0002
#define SCTP_OP_ERROR_STALE_COOKIE	0x0003
#define SCTP_OP_ERROR_NO_RESOURCE 	0x0004
#define SCTP_OP_ERROR_DNS_FAILED   	0x0005
#define SCTP_OP_ERROR_UNK_CHUNK	   	0x0006
#define SCTP_OP_ERROR_INV_PARAM		0x0007
#define SCTP_OP_ERROR_UNK_PARAM	       	0x0008
#define SCTP_OP_ERROR_NO_USERD    	0x0009
#define SCTP_OP_ERROR_COOKIE_SHUT	0x000a
#define SCTP_OP_ERROR_DELETE_LAST	0x000b
#define SCTP_OP_ERROR_RESOURCE_SHORT 	0x000c

#define SCTP_MAX_ERROR_CAUSE  12

/* empty error causes i.e. nothing but the cause
 * are SCTP_OP_ERROR_NO_RESOURCE, SCTP_OP_ERROR_INV_PARAM,
 * SCTP_OP_ERROR_COOKIE_SHUT.
 */

/* parameter for Heart Beat */
#define HEART_BEAT_PARAM 0x0001



/* send options for SCTP
 */
#define SCTP_ORDERED_DELIVERY		0x01
#define SCTP_NON_ORDERED_DELIVERY	0x02
#define SCTP_DO_CRC16			0x08
#define SCTP_MY_ADDRESS_ONLY		0x10

/* below turns off above */
#define SCTP_FLEXIBLE_ADDRESS		0x20
#define SCTP_NO_HEARTBEAT		0x40

/* mask to get sticky */
#define SCTP_STICKY_OPTIONS_MASK        0x0c

/* MTU discovery flags */
#define SCTP_DONT_FRAGMENT		0x0100
#define SCTP_FRAGMENT_OK		0x0200


/* SCTP state defines for internal state machine */
#define SCTP_STATE_EMPTY		0x0000
#define SCTP_STATE_INUSE		0x0001
#define SCTP_STATE_COOKIE_WAIT		0x0002
#define SCTP_STATE_COOKIE_SENT		0x0004
#define SCTP_STATE_OPEN			0x0008
#define SCTP_STATE_SHUTDOWN		0x0010
#define SCTP_STATE_SHUTDOWN_RECV	0x0020
#define SCTP_STATE_SHUTDOWN_ACK_SENT	0x0040
#define SCTP_STATE_SHUTDOWN_PEND	0x0080
#define SCTP_STATE_MASK			0x007f
/* SCTP reachability state for each address */
#define SCTP_ADDR_NOT_REACHABLE		1
#define SCTP_ADDR_REACHABLE		2
#define SCTP_ADDR_NOHB			4
#define SCTP_ADDR_BEING_DELETED		8

/* How long a cookie lives */
#define SCTP_DEFAULT_COOKIE_LIFE 60 /* seconds */

/* resource limit of streams */
#define MAX_SCTP_STREAMS 2048


/* guess at how big to make the TSN mapping array */
#define SCTP_STARTING_MAPARRAY 10000

/* Here we define the timer types used
 * by the implementation has
 * 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_SHUTDOWN	3
#define SCTP_TIMER_HEARTBEAT	4
#define SCTP_TIMER_PMTU		5
/* number of timer types in the base SCTP
 * structure used in the set/get and has
 * the base default.
 */
#define SCTP_NUM_TMRS 6



#define SCTP_IPV4_ADDRESS	2
#define SCTP_IPV6_ADDRESS	4

/* timer types */
#define SctpTimerTypeNone		0
#define SctpTimerTypeSend		1
#define SctpTimerTypeInit		2
#define SctpTimerTypeRecv		3
#define SctpTimerTypeShutdown		4
#define SctpTimerTypeHeartbeat		5
#define SctpTimerTypeCookie		6
#define SctpTimerTypeNewCookie		7
#define SctpTimerTypePathMtuRaise	8
#define SctpTimerTypeShutdownAck	9
#define SctpTimerTypeRelReq		10

/* Here are the timer directives given to the
 * user provided function
 */
#define SCTP_TIMER_START	1
#define SCTP_TIMER_STOP		2

/* running flag states in timer structure */
#define SCTP_TIMER_IDLE		0x0
#define SCTP_TIMER_EXPIRED	0x1
#define SCTP_TIMER_RUNNING	0x2