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dlb(7)


NAME

  dlb, dlpi - STREAMS pseudodevice driver for bridging BSD Drivers to STREAMS


SYNOPSIS

       #include <sys/dlpihdr.h>
       #include <fcntl.h>
       fd = open ("/dev/streams/dlb", O_RDWR, 0);


DESCRIPTION

  The dlb STREAMS pseudodevice driver provides a communication path between
  BSD-style device drivers and STREAMS protocol stacks. The dlb STREAMS
  pseudodevice driver is the Stream end in a Stream that communicates with
  BSD-based device drivers.

  When the /dev/streams/dlb character device is open, a Stream is constructed
  between a Stream head and the dlb pseudodevice driver. After the Stream
  that is intended to communicate with the BSD-based driver or drivers is
  created, the protocol module or modules can be pushed onto it.

  Tru64 UNIX supports a subset of the Data Link Provider Interface (DLPI)
  connectionless mode of communication. The attach DLPI primitive is required
  to associate a particular physical point of attachment (PPA) with a Stream
  in Tru64 UNIX's implementation of the style 2 provider.

  On the write side, the dlb pseudodevice driver translates connectionless
  style 2 DLPI messages to the appropriate BSD ifnet interface messages.  On
  the read side, the user-bound Service Access Point (SAP) messages received
  from a selected PPA over BSD based driver or drivers are sent upstream.


RELATED INFORMATION

  Network Programmer's Guide

  Data Link Provider Interface specification in
  /usr/share/doclib/dlpi/dlpi.ps

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