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dlb(7) Miscellaneous Information Manual 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 be- tween BSD-style device drivers and STREAMS protocol stacks. The dlb STREAMS pseudodevice driver is the Stream end in a Stream that communi- cates with BSD-based device drivers. When the /dev/streams/dlb character device is open, a Stream is con- structed 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. DIGITAL 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 DIGITAL UNIX's implementation of the style 2 provider. On the write side, the dlb pseudodevice driver translates connection- less style 2 DLPI messages to the appropriate BSD ifnet interface mes- sages. 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 specification in /usr/share/doclib/dlpi/dlpi.ps delim off dlb(7)