tihdr.h

This a separate release of the OpenSS7 X/Open XTI/TLI library, TLI modules (timod, tirdwr) and the I

 *  that has been bound to the stream.  If a connection has been established,
 *  the remote address is the protocol address of the remote transport entity.
 */
struct T_addr_ack {
	t_scalar_t PRIM_type;		/* always T_ADDR_ACK */
	t_scalar_t LOCADDR_length;	/* length of local address - see not in sec. 1.4 */
	t_scalar_t LOCADDR_offset;	/* offset of local address */
	t_scalar_t REMADDR_length;	/* length of remote address - see not in sec. 1.4 */
	t_scalar_t REMADDR_offset;	/* offset of remote address */
};

/* 
 *  Connection Oriented Transport Primitives
 */

/* 
 *  T_CONN_REQ, M_PROTO
 *
 *  This primitive requests that the transport provider make a connection to
 *  the specified destination.
 */
struct T_conn_req {
	t_scalar_t PRIM_type;		/* always T_CONN_REQ */
	t_scalar_t DEST_length;		/* dest addr length */
	t_scalar_t DEST_offset;		/* dest addr offset */
	t_scalar_t OPT_length;		/* options length */
	t_scalar_t OPT_offset;		/* options offset */
};

/* 
 *  T_CONN_RES, M_PROTO (followed by 0 or more M_DATA)
 *
 *  This primitive requests that the transport provider accept a previous
 *  connect request on the specified response queue.
 */
struct T_conn_res {
	t_scalar_t PRIM_type;		/* always T_CONN_RES */
	t_scalar_t ACCEPTOR_id;		/* reponse queue ptr */
	t_scalar_t OPT_length;		/* options length */
	t_scalar_t OPT_offset;		/* options offset */
	t_scalar_t SEQ_number;		/* sequence number */
};

/* 
 *  T_DSICON_REQ, M_PROTO (followed by 0 or more M_DATA)
 *
 *  This primitive request that the transport provider deny a request for
 *  connection, or disconnect an existing connection.
 */
struct T_discon_req {
	t_scalar_t PRIM_type;		/* always T_DISCON_REQ */
	t_scalar_t SEQ_number;		/* sequence number */
};

/* 
 *  T_DATA_REQ, (opt M_PROTO) (followed by 0 or more M_DATA)
 *
 *  This primitive indicates to the transport provider that this message
 *  contains a transport interface data unit.  One or more transport interface
 *  data units form a transport service data unit (TSDU)[11].  This primitive
 *  has a mechanism which indicates the beginning and end of a transport
 *  service data unit.  However, not all transport providers support the
 *  concept of a transport service data unit, as noted in section 2.1.2.1.
 */
struct T_data_req {
	t_scalar_t PRIM_type;		/* always T_DATA_REQ */
	t_scalar_t MORE_flag;		/* indicates more data in TSDU */
};

/* 
 *  T_EXDATA_REQ, M_PROTO (followed by 1 or more M_DATA)
 *
 *  This primitive indicates to the transport provider that this message
 *  contains an expedited transport interface data unit.  One or more
 *  expedited transport interface data units form an expedited transport
 *  service data unit[12].  This primitive has a mechanism which indicates the
 *  beginning and end of an expedited tansport service data unit.  However,
 *  not all transport providers support the concept of an expedited transport
 *  service data unit, as noted in section 2.1.2.1.
 */
struct T_exdata_req {
	t_scalar_t PRIM_type;		/* T_EXDATA_REQ */
	t_scalar_t MORE_flag;
};

/* 
 *  T_ORDREL_REQ, M_PROTO
 *
 *  This primitive indicates to the transport provider that the user is
 *  finished sending data.  This primitive is only supported by the transport
 *  provider if it is of type T_COTS_ORD.
 */
struct T_ordrel_req {
	t_scalar_t PRIM_type;		/* always T_ORDREL_REQ */
};

/* 
 *  T_CONN_IND, M_PROTO
 *
 *  This primnitive indicates to the transport user that a connect request to
 *  the user has been made by the user at the specified source address.  The
 */
struct T_conn_ind {
	t_scalar_t PRIM_type;		/* always T_CONN_IND */
	t_scalar_t SRC_length;		/* source addr length = see note in sec. 1.4 */
	t_scalar_t SRC_offset;		/* source addr offset */
	t_scalar_t OPT_length;		/* options length = see note in sec. 1.4 */
	t_scalar_t OPT_offset;		/* options offset */
	t_scalar_t SEQ_number;		/* sequence number - see not in sec. 1.4 */
};

/* 
 *  T_CONN_CON, M_PROTO, (followed by 0 or more M_DATA)
 *
 *  This primitive indicates to the user that a connect request has been
 *  confirmed on the specified responding address.
 */
struct T_conn_con {
	t_scalar_t PRIM_type;		/* T_CONN_CON */
	t_scalar_t RES_length;		/* responding addr length - see note in sec. 1.4 */
	t_scalar_t RES_offset;		/* responding addr offset */
	t_scalar_t OPT_length;		/* options length - see note in sec. 1.4 */
	t_scalar_t OPT_offset;		/* options offset */
};

/* 
 *  T_DISCON_IND, M_PROTO (followed by 0 or more M_DATA)
 *
 *  This primitive indicates to the user that either a request for connection
 *  has been denied or and existing connection has been disconnected.
 */
struct T_discon_ind {
	t_scalar_t PRIM_type;		/* T_DISCON_IND */
	t_scalar_t DISCON_reason;	/* disconnect reason - see note in sec. 1.4 */
	t_scalar_t SEQ_number;		/* sequence number - see note in sec. 1.4 */
};

/* 
 *  T_DATA_IND, (opt M_PROTO) (followed by 0 or more M_DATA)
 *
 *  This primitive indicates to the transport user that this message contains
 *  a transport interface data unit.  One or more transport interface data
 *  units form a transport servie data unit.  This primitive has a mechanism
 *  which indicates the beginning and end of a transport service data unit.
 *  However, not all transport provider support the concept of a transport
 *  service data unit, as noted in section 2.1.2.1.
 */
struct T_data_ind {
	t_scalar_t PRIM_type;		/* always T_DATA_IND */
	t_scalar_t MORE_flag;		/* indicates more data in TSDU */
};

/* 
 *  T_EXDATA_IND, M_PROTO
 *
 *  This primitive indicates to the transport user that this message contains
 *  an expedited transport interface data unit.  One or more expedited
 *  transport interface data units form an expedited transport service data
 *  unit.  This primitive has a mechanism which indicates the beginning and
 *  end of an expedited transport service data unit.  However, not all
 *  transport providers support the concept of an expedited transport service
 *  data unit, as noted in section 2.1.2.1.
 */
struct T_exdata_ind {
	t_scalar_t PRIM_type;		/* always T_EXDATA_IND */
	t_scalar_t MORE_flag;		/* indicates more data in ETSDU */
};

/* 
 *  T_ORDREL_IND, M_PROTO
 *
 *  This primitive indicates to the transport user that the other side of the
 *  connection is finished sending data.  This primitive is only supported by
 *  the transport provider if it is of type T_COTS_ORD.
 */
struct T_ordrel_ind {
	t_scalar_t PRIM_type;		/* always T_ORDREL_IND */
};

/* 
 *  Connectionless-Mode Transport Primitives
 */

/* 
 *  T_UNITDATA_REQ, M_PROTO
 *
 *  This primitive request that the transport provider send the specified
 *  datagram to the specified destination.
 */
struct T_unitdata_req {
	t_scalar_t PRIM_type;		/* always T_UNITDATA_REQ */
	t_scalar_t DEST_length;		/* dest addr length */
	t_scalar_t DEST_offset;		/* dest addr offset */
	t_scalar_t OPT_length;		/* options length */
	t_scalar_t OPT_offset;		/* options offset */
};

/* 
 *  T_UNITDATA_IND, M_PROTO
 *
 *  This primitive indicates to the transport user that a datagram has been
 *  received from the specified source address.
 */
struct T_unitdata_ind {
	t_scalar_t PRIM_type;		/* T_UNITDATA_IND */
	t_scalar_t SRC_length;		/* source addr length - see note in sec. 1.4 */
	t_scalar_t SRC_offset;		/* source addr offset */
	t_scalar_t OPT_length;		/* options length - see note in sec. 1.4 */
	t_scalar_t OPT_offset;		/* options offset */
};

/* 
 *  T_UDERROR_IND, M_PROTO
 *
 *  This primitive indicates to the transport user that a datagram with the
 *  specified destination address and options produced an error.
 */
struct T_uderror_ind {
	t_scalar_t PRIM_type;		/* T_UDERROR_IND */
	t_scalar_t DEST_length;		/* dest addr length - see note in sec. 1.4 */
	t_scalar_t DEST_offset;		/* dest addr offset */
	t_scalar_t OPT_length;		/* options length - see note in sec. 1.4 */
	t_scalar_t OPT_offset;		/* options offset */
	t_scalar_t ERROR_type;		/* error type */
};

struct T_optdata_req {
	t_scalar_t PRIM_type;		/* T_OPTDATA_REQ */
	t_scalar_t DATA_flag;		/* flag bits associated with data */
	t_scalar_t OPT_length;		/* options length */
	t_scalar_t OPT_offset;		/* options offset */
};

struct T_optdata_ind {
	t_scalar_t PRIM_type;		/* T_OPTDATA_REQ */
	t_scalar_t DATA_flag;		/* flag bits associated with data */
	t_scalar_t OPT_length;		/* options length */
	t_scalar_t OPT_offset;		/* options offset */
};

struct T_capability_req {
	t_scalar_t PRIM_type;		/* T_CAPABILITY_REQ */
	t_uscalar_t CAP_bits1;		/* capability bits 1 */
};

struct T_capability_ack {
	t_scalar_t PRIM_type;		/* T_CAPABILITY_ACK */
	t_uscalar_t CAP_bits1;		/* capability bits #1 */
	struct T_info_ack INFO_ack;	/* info acknowledgement */
	t_uscalar_t ACCEPTOR_id;	/* accepting endpoint id */
};

#define TC1_INFO	(1<<0)
#define TC1_ACCEPTOR_ID	(1<<1)
#define TCI_CAP_BITS2	(1<<31)

union T_primitives {
	t_scalar_t type;
	struct T_addr_ack addr_ack;
	struct T_addr_req addr_req;
	struct T_bind_ack bind_ack;
	struct T_bind_req bind_req;
	struct T_conn_con conn_con;
	struct T_conn_ind conn_ind;
	struct T_conn_req conn_req;
	struct T_conn_res conn_res;
	struct T_data_ind data_ind;
	struct T_data_req data_req;
	struct T_discon_ind discon_ind;
	struct T_discon_req discon_req;
	struct T_error_ack error_ack;
	struct T_exdata_ind exdata_ind;
	struct T_exdata_req exdata_req;
	struct T_info_ack info_ack;
	struct T_info_req info_req;
	struct T_ok_ack ok_ack;
	struct T_optmgmt_ack optmgmt_ack;
	struct T_optmgmt_req optmgmt_req;
	struct T_ordrel_ind ordrel_ind;
	struct T_ordrel_req ordrel_req;
	struct T_uderror_ind uderror_ind;
	struct T_unbind_req unbind_req;
	struct T_unitdata_ind unitdata_ind;
	struct T_unitdata_req unitdata_req;
	struct T_optdata_req optdata_req;
	struct T_optdata_ind optdata_ind;
	struct T_capability_req capability_req;
	struct T_capability_ack capability_ack;
};

#endif				/* _SYS_TIHDR_H */