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Communications Programming Concepts

Data Link Control Programming and Reference Information

You can use several procedures, as well as the data link control (DLC) reference information, to manage DLC.

DLC Reference Information

The following sections list available DLC reference information:

For more information on DLC reference items, see AIX Version 4.3 Technical Reference.

DLC Entry Points

dlcclose Closes a generic data link control (GDLC) channel.
dlcconfig Issues specific commands to GDLC.
dlcioctl Issues specific commands to GDLC.
dlcmpx Decodes the device handler's special file name appended to the opened call.
dlcopen Opens a GDLC channel.
dlcread Reads receive data from GDLC.
dlcselect Selects for asynchronous criteria from GDLC, such as receive data completion and exception conditions.
dlcwrite Writes transmit data to GDLC.

Kernel Services for DLC

fp_close Allows kernel to close the GDLC device manager using a file pointer.
fp_ioctl Transfers special commands from the kernel to GDLC.
fp_open Allows kernel to open the GDLC device manager by its device name.
fp_write Allows kernel data to be sent using a file pointer.

Kernel Routines for DLC

Datagram Data Received Routine for DLC

Exception Condition Routine for DLC

I-Frame Data Received Routine for DLC

Network Data Received Routine for DLC

XID Data Received Routine for DLC

DLC Extended Parameters for Subroutines and Kernel Services

open Subroutine Extended Parameters for DLC

read Subroutine Extended Parameters for DLC

write Subroutine Extended Parameters for DLC

Application Subroutines

close Subroutine Interface for Data Link Control Manager
ioctl Subroutine Interface for Data Link Control Manager
open Subroutine Interface for Data Link Control Manager
readx Subroutine Interface for Data Link Control Manager
select Subroutine Interface for Data Link Control Manager
writex Subroutine Interface for Data Link Control Manager

DLC Operations

ioctl Operations (op) for DLC

Parameter Blocks by ioctl Operation for DLC

DLC Programming Procedures

Adding an Installed DLC in Implementing GDLC Interface.

Listing, changing or removing DLC Attributes in Managing DLC Device Drivers in AIX Version 4.3 System Management Guide: Communications and Networks.


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