File /code/linux-sctp/include/netinet/sctp.h

#ifndef _NETINET_SCTP_H
#define _NETINET_SCTP_H 1

#ident "@(#) $Name:  $($Revision: 0.4 $) Copyright (c) 1997-2002 OpenSS7 Corporation."

#include <features.h>
#include <sys/types.h>

__BEGIN_DECLS

enum {
	SCTP_ESTABLISHED = 1,
	SCTP_COOKIE_WAIT,
	SCTP_COOKIE_ECHOED,
	SCTP_SHUTDOWN_PENDING,
	SCTP_SHUTDOWN_SENT,
	SCTP_UNREACHABLE,
	SCTP_CLOSED,
	SCTP_SHUTDOWN_RECEIVED,
	SCTP_SHUTDOWN_RECVWAIT,
	SCTP_LISTEN,
	SCTP_SHUTDOWN_ACK_SENT,
	SCTP_MAX_STATES
};

/*
 *  User SCTP_HB socket option structure
 */
struct sctp_hbitvl {
	struct sockaddr_in
	 dest;					/* destination IP address */
	uint hb_act;				/* activation flag */
	uint hb_itvl;				/* interval in milliseconds */
};
/*
 *  User SCTP_RTO socket option structure
 */
struct sctp_rtoval {
	struct sockaddr_in
	 dest;					/* destination IP address */
	uint rto_initial;			/* RTO.Initial (milliseconds) */
	uint rto_min;				/* RTO.Min (milliseconds) */
	uint rto_max;				/* RTO.Max (milliseconds) */
	uint max_retrans;			/* Path.Max.Retrans (retires) */
};
/*
 *  User SCTP_STATUS socket option structure
 */
struct sctp_dstat {
	struct sockaddr_in
	 dest;					/* destination IP address */
	uint dst_cwnd;				/* congestion window */
	uint dst_unack;				/* unacknowledged chunks */
	uint dst_srtt;				/* smoothed round trip time */
	uint dst_rvar;				/* rtt variance */
	uint dst_rto;				/* current rto */
	uint dst_sst;				/* slow start threshold */
};
struct sctp_astat {
	uint assoc_rwnd;			/* receive window */
	uint assoc_rbuf;			/* receive buffer */
	uint assoc_nrep;			/* destinations reported */
};

/*
 *  User-settable options (used with setsockopt).
 */
#define SCTP_NODELAY		 1	/* don't delay send to defrag or bundle chunks */
#define SCTP_MAXSEG		 2	/* set artificial path MTU */
#define SCTP_CORK		 3	/* control sending of partial chunks */
#define SCTP_RECVSID		 4	/* control addition of stream id ancillary data */
#define SCTP_RECVPPI		 5	/* control addition of payload proto id ancillary data */
#define SCTP_RECVSSN		 6
#define SCTP_RECVTSN		 7
#define SCTP_SID		 8	/* stream id default and ancillary data */
#define SCTP_PPI		 9	/* payload protocol id default and ancillary data */
#define SCTP_SSN		10
#define SCTP_TSN		11
#define SCTP_HB			12	/* control heartbeat setting and interval */
#define SCTP_RTO		13	/* control and check RTO values */
#define SCTP_COOKIE_LIFE	14
#define SCTP_SACK_DELAY		15
#define SCTP_PATH_MAX_RETRANS	16
#define SCTP_ASSOC_MAX_RETRANS	17
#define SCTP_MAX_INIT_RETRIES	18
#define SCTP_HEARTBEAT_ITVL	19
#define SCTP_RTO_INITIAL	20
#define SCTP_RTO_MIN		21
#define SCTP_RTO_MAX		22
#define SCTP_OSTREAMS		23
#define SCTP_ISTREAMS		24
#define SCTP_COOKIE_INC		25
#define SCTP_THROTTLE_ITVL	26
#define SCTP_MAC_TYPE		27
#define SCTP_CKSUM_TYPE		28
#define SCTP_DEBUG_OPTIONS	29
#define SCTP_STATUS		30
#define SCTP_ALI		31
#define SCTP_PR			32
#define SCTP_DISPOSITION	33
#define SCTP_LIFETIME		34
#define SCTP_ADD		35
#define SCTP_ADD_IP		36
#define SCTP_DEL_IP		37
#define SCTP_SET		38
#define SCTP_SET_IP		39
#define SCTP_ECN		40
#define SCTP_MAX_BURST		41

/*
 *  HMAC settings for cookie verification for use with SCTP_MAC_TYPE socket
 *  option.
 */
#define SCTP_HMAC_NONE		0	/* no hmac (all one's) */
#define SCTP_HMAC_SHA_1		1	/* SHA-1 coded hmac */
#define SCTP_HMAC_MD5		2	/* MD5 coded hmac */

/*
 *  CSUM settings for checksum algorithm selection with SCTP_CHKSUM_TYPE
 *  socket option.
 */
#define SCTP_CSUM_ADLER32	0	/* Adler32 checksum output */
#define SCTP_CSUM_CRC32C	1	/* CRC-32c checksum output */

/*
 *  Debugging flags for use with SCTP_DEBUG_OPTIONS socket option.
 */
#define SCTP_OPTION_DROPPING	0x01	/* stream will drop packets */
#define SCTP_OPTION_BREAK	0x02	/* stream will break dest #1 and 2 one way */
#define SCTP_OPTION_DBREAK	0x04	/* stream will break dest both ways */
#define SCTP_OPTION_RANDOM	0x08	/* stream will drop packets at random */

/*
 *  Partial reliability preference for use wtih SCTP_PR socket option
 */
#define SCTP_PR_NONE		0x0	/* no partial reliability */
#define SCTP_PR_PREFERRED	0x1	/* partial reliability preferred */
#define SCTP_PR_REQUIRED	0x2	/* partial reliability required */

/*
 *  Message retrieval dispositions for use with MSG_CONFIRM to  recvmsg()
 */
#define SCTP_DISPOSITION_NONE		0x0
#define SCTP_DISPOSITION_UNSENT		0x1
#define SCTP_DISPOSITION_SENT		0x2
#define SCTP_DISPOSITION_GAP_ACKED	0x3
#define SCTP_DISPOSITION_ACKED		0x4

/* this should be in in.h */
#ifndef IPPROTO_SCTP
#define IPPROTO_SCTP        132	/* Stream Control Transmission Protocol */
#endif

/* this should be in socket.h */
#ifndef SOL_SCTP
#define SOL_SCTP            132	/* SCTP level */
#endif

__END_DECLS
#endif				/* _NETINET_SCTP_H */