dnet man page on Solaris

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dnet(7D)			    Devices			      dnet(7D)

NAME
       dnet - Ethernet driver for DEC 21040, 21041, 21140 Ethernet cards

SYNOPSIS
       /kernel/drv/dnet

DESCRIPTION
       The  dnet  Ethernet  driver  is	a  multithreaded,  loadable, clonable,
       STREAMS GLD driver. Multiple controllers installed  within  the	system
       are  supported  by  the	driver. The dnet driver functions include con‐
       troller	initialization,	 frame	transmit   and	 receive,   functional
       addresses,  promiscuous	and  multicast support, and error recovery and
       reporting.

APPLICATION PROGRAMMING INTERFACE
       The cloning character-special device, /dev/dnet, is used to access  all
       DEC 21040/21041/21140 devices installed in the system.

       The  dnet  driver  is  dependent on /kernel/misc/gld, a loadable kernel
       module that provides the dnet driver with the DLPI  and	STREAMS	 func‐
       tionality  required  of	a LAN driver.  See gld(7D) for more details on
       the primitives supported by the driver.

       The device is  initialized  on  the  first  attach  and	de-initialized
       (stopped) on the last detach.

       The  values  returned  by  the  driver  in the DL_INFO_ACK primitive in
       response to a DL_INFO_REQ from the user are as follows:

	 ·  The maximum SDU is 1500 (ETHERMTU - defined in <sys/ethernet.h>).

	 ·  The minimum SDU is 0.

	 ·  The DLSAP address length is 8.

	 ·  The MAC type is DL_ETHER.

	 ·  The sap length value is −2, meaning the physical address component
	    is followed immediately by a 2-byte sap component within the DLSAP
	    address.

	 ·  The broadcast address value is the Ethernet/IEEE broadcast address
	    (FF:FF:FF:FF:FF:FF).

       Once  in the DL_ATTACHED state, the user must send a DL_BIND_REQ to as‐
       sociate a particular Service Access Point (SAP) with the stream.

PRECONFIGURATION
       The PCI configuration process varies from system to system. Follow  the
       instructions provided by the vendor.

   Known Problems and Limitations
	 ·  On	multiport  cards  (exception:  Osicom (Rockwell) RNS2340), the
	    first port is the top port. (On the Osicom RNS2340, the first port
	    is the bottom port.)

	 ·  If	the   dnet  driver  fails  to  determine the correct speed and
	    duplex mode resulting in a corresponding drop in performance,  set
	    the speed and duplex mode using the dnet.conf file.

	 ·
	    The	 dnet  driver  incorrectly  counts  carrier lost or no carrier
	    errors while in full-duplex	 mode.	There  is  no  carrier	signal
	    present  when  in full-duplex mode and it should not be counted as
	    an error.

	 ·  Version 4 SROM formats are not supported.

CONFIGURATION
       The /kernel/drv/dnet.conf file supports the following options:

       full-duplex     For full duplex operation use full-duplex=1,  for  half
		       duplex  use  full-duplex=0. Half-duplex operation gives
		       better results on older 10mbit networks.

       speed	       For 10mbit operation use speed=10, for  100mbit	opera‐
		       tion  use  speed=100.  Certain  21140  based cards will
		       operate at either speed.	 Use  the  speed  property  to
		       override the 100mbit default in this case.

FILES
       /dev/dnet		       character special device

       /kernel/drv/dnet.conf	       dnet configuration file

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Architecture		     │x86			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       attributes(5), dlpi(7P), gld(7D) streamio(7I)

       Writing Device Drivers

	STREAMS Programming Guide

       Network Interfaces Programmer's Guide

SunOS 5.10			  20 OCT 2000			      dnet(7D)
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