/* @(#) $Header: /tcpdump/master/tcpdump/sctpHeader.h,v 1.6 2002/12/11 07:14:11 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.
*
* 4. 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:
*
* rstewar1@email.mot.com
* kmorneau@cisco.com
* qxie1@email.mot.com
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorperated into the next SCTP release.
*/
#ifndef __sctpHeader_h__
#define __sctpHeader_h__
#include <sctpConstants.h>
#ifdef __cplusplus
extern "C" {
#endif
/* the sctp common header */
#ifdef TRU64
#define _64BITS 1
#endif
struct sctpHeader{
u_int16_t source;
u_int16_t destination;
u_int32_t verificationTag;
u_int32_t adler32;
};
/* various descriptor parsers */
struct sctpChunkDesc{
u_int8_t chunkID;
u_int8_t chunkFlg;
u_int16_t chunkLength;
};
struct sctpParamDesc{
u_int16_t paramType;
u_int16_t paramLength;
};
struct sctpRelChunkDesc{
struct sctpChunkDesc chk;
u_int32_t serialNumber;
};
struct sctpVendorSpecificParam {
struct sctpParamDesc p; /* type must be 0xfffe */
u_int32_t vendorId; /* vendor ID from RFC 1700 */
u_int16_t vendorSpecificType;
u_int16_t vendorSpecificLen;
};
/* Structures for the control parts */
/* Sctp association init request/ack */
/* this is used for init ack, too */
struct sctpInitiation{
u_int32_t initTag; /* tag of mine */
u_int32_t rcvWindowCredit; /* rwnd */
u_int16_t NumPreopenStreams; /* OS */
u_int16_t MaxInboundStreams; /* MIS */
u_int32_t initialTSN;
/* optional param's follow in sctpParamDesc form */
};
struct sctpV4IpAddress{
struct sctpParamDesc p; /* type is set to SCTP_IPV4_PARAM_TYPE, len=10 */
u_int32_t ipAddress;
};
struct sctpV6IpAddress{
struct sctpParamDesc p; /* type is set to SCTP_IPV6_PARAM_TYPE, len=22 */
u_int8_t ipAddress[16];
};
struct sctpDNSName{
struct sctpParamDesc param;
u_int8_t name[1];
};
struct sctpCookiePreserve{
struct sctpParamDesc p; /* type is set to SCTP_COOKIE_PRESERVE, len=8 */
u_int32_t extraTime;
};
struct sctpTimeStamp{
u_int32_t ts_sec;
u_int32_t ts_usec;
};
/* wire structure of my cookie */
struct cookieMessage{
u_int32_t TieTag_curTag; /* copied from assoc if present */
u_int32_t TieTag_hisTag; /* copied from assoc if present */
int32_t cookieLife; /* life I will award this cookie */
struct sctpTimeStamp timeEnteringState; /* the time I built cookie */
struct sctpInitiation initAckISent; /* the INIT-ACK that I sent to my peer */
u_int32_t addressWhereISent[4]; /* I make this 4 ints so I get 128bits for future */
int32_t addrtype; /* address type */
u_int16_t locScope; /* V6 local scope flag */
u_int16_t siteScope; /* V6 site scope flag */
/* at the end is tacked on the INIT chunk sent in
* its entirety and of course our
* signature.
*/
};
/* this guy is for use when
* I have a initiate message gloming the
* things together.
*/
struct sctpUnifiedInit{
struct sctpChunkDesc uh;
struct sctpInitiation initm;
};
struct sctpSendableInit{
struct sctpHeader mh;
struct sctpUnifiedInit msg;
};
/* Selective Acknowledgement
* has the following structure with
* a optional ammount of trailing int's
* on the last part (based on the numberOfDesc
* field).
*/
struct sctpSelectiveAck{
u_int32_t highestConseqTSN;
u_int32_t updatedRwnd;
u_int16_t numberOfdesc;
u_int16_t numDupTsns;
};
struct sctpSelectiveFrag{
u_int16_t fragmentStart;
u_int16_t fragmentEnd;
};
struct sctpUnifiedSack{
struct sctpChunkDesc uh;
struct sctpSelectiveAck sack;
};
/* for both RTT request/response the
* following is sent
*/
struct sctpHBrequest {
u_int32_t time_value_1;
u_int32_t time_value_2;
};
/* here is what I read and respond with to. */
struct sctpHBunified{
struct sctpChunkDesc hdr;
struct sctpParamDesc hb;
};
/* here is what I send */
struct sctpHBsender{
struct sctpChunkDesc hdr;
struct sctpParamDesc hb;
struct sctpHBrequest rtt;
int8_t addrFmt[SCTP_ADDRMAX];
u_int16_t userreq;
};
/* for the abort and shutdown ACK
* we must carry the init tag in the common header. Just the
* common header is all that is needed with a chunk descriptor.
*/
struct sctpUnifiedAbort{
struct sctpChunkDesc uh;
};
struct sctpUnifiedAbortLight{
struct sctpHeader mh;
struct sctpChunkDesc uh;
};
struct sctpUnifiedAbortHeavy{
struct sctpHeader mh;
struct sctpChunkDesc uh;
u_int16_t causeCode;
u_int16_t causeLen;
};
/* For the graceful shutdown we must carry
* the tag (in common header) and the highest consequitive acking value
*/
struct sctpShutdown {
u_int32_t TSN_Seen;
};
struct sctpUnifiedShutdown{
struct sctpChunkDesc uh;
struct sctpShutdown shut;
};
/* in the unified message we add the trailing
* stream id since it is the only message
* that is defined as a operation error.
*/
struct sctpOpErrorCause{
u_int16_t cause;
u_int16_t causeLen;
};
struct sctpUnifiedOpError{
struct sctpChunkDesc uh;
struct sctpOpErrorCause c;
};
struct sctpUnifiedStreamError{
struct sctpHeader mh;
struct sctpChunkDesc uh;
struct sctpOpErrorCause c;
u_int16_t strmNum;
u_int16_t reserved;
};
struct staleCookieMsg{
struct sctpHeader mh;
struct sctpChunkDesc uh;
struct sctpOpErrorCause c;
u_int32_t moretime;
};
/* the following is used in all sends
* where nothing is needed except the
* chunk/type i.e. shutdownAck Abort */
struct sctpUnifiedSingleMsg{
struct sctpHeader mh;
struct sctpChunkDesc uh;
};
struct sctpDataPart{
u_int32_t TSN;
u_int16_t streamId;
u_int16_t sequence;
u_int32_t payloadtype;
};
struct sctpUnifiedDatagram{
struct sctpChunkDesc uh;
struct sctpDataPart dp;
};
struct sctpECN_echo{
struct sctpChunkDesc uh;
u_int32_t Lowest_TSN;
};
struct sctpCWR{
struct sctpChunkDesc uh;
u_int32_t TSN_reduced_at;
};
#ifdef __cplusplus
}
#endif
#endif