t_optdata_ind.7

7号信令功能代码,为开源代码

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.\"
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.TH T_OPTDATA_IND 7 "2004/01/12 23:45:24" "LiS-2_16_18-8" "Transport Provider Interface (TPI)"
.SH NAME
.B T_OPTDATA_IND
\- Data indication with options
.SH SYNOPSIS
The message consists of one
.B M_PROTO
message block followed by zero or more
message blocks, where each
.B M_DATA
message block contains one or more bytes
of data.  The format of the
.B M_PROTO
message block is as follows:
.sp
.nf
\fC\s-1\
struct T_optdata_ind {
    t_scalar_t PRIM_type;      /* always T_OPTDATA_IND           */
    t_scalar_t DATA_flag;      /* flag bits associated with data */
    t_scalar_t OPT_length;     /* options length                 */
    t_scalar_t OPT_offset;     /* options offset                 */
};
\fR\s+1
.fi
.SH DESCRIPTION
The primitive indicates to the transport user that the message contains
a transport interface data unit.  One or more transport interface data units
form a transport service data unit (TSDU).
.PP
Note that the maximum transport service and data unit sizes allowed by a
transport provider is indicated to the user by the
.BR T_INFO_ACK (7)
primitive.
.PP
This primitive has a mechanism that 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.
.PP
This primitive also provides mechanisms to have options associated with the
data being transferred.
.SH PARAMETERS
The fields of this message have the following semantics:
.TP 16
.I PRIM_type
identifies the primitive type
.TP
.I DATA_flag
specifiesbit fields specific general properties associated with the
data being transferred.  The following settings are currently defined:
.RS
.TP
.B T_ODF_MORE
When set, this bit indicates that the next
.BR T_OPTDATA_IND (7)
primitive is also part of this transport service data unit.
.RE
.TP
.I OPT_length
the length of the requested options asociated with the primitive
.TP
.I OPT_offset
the offset (from the beginning of the M_PROTO message block) where the
options asociated with this primitive begin.
.SH RULES
If a TSDU spans multiple
.BR T_OPTDATA_IND (7)
message blocks, then an ETSDU may be placed between two
.BR T_DATA_IND (7)
message blocks.  Once an ETSDU is started, then the ETSDU must be completed
before any
.BR T_OPTDATA_IND (7)
message blocks defining a TSDU are resumed.
.SH MODES
Only connection mode.
.SH ORIGINATOR
Transport provider.
.SH "SEE ALSO"
.BR T_OPTDATA_REQ (7),
.BR T_DATA_REQ (7),
.BR T_DATA_IND (7),
.BR T_EXDATA_REQ (7),
.BR T_EXDATA_IND (7).
.SH VERSIONS
.PP
This manpage was written for
.B LiS\c
.
.[
LiS
.]
.br
The Transport Provider Interface first appeared in SVR 4.
.[
svr4
.]
.br
This interface conforms to TPI Version 2, Draft 2.
.XX
.[
TPI Revision 2.0.0
.]
.[
magic
.]
.[
advprog
.]
.[
$LIST$
.]
.T2