Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!SUN.SOE.CLARKSON.EDU!nelson
From: nelson@SUN.SOE.CLARKSON.EDU (Russ Nelson)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: [bkc@omnigate.clarkson.edu: possible bug in 5210 packet driver/ncsa driver]
Message-ID: <8903160350.AA02456@sun.soe.clarkson.edu>
Date: 16 Mar 89 03:50:06 GMT
References: <8903010434.AA00485@asylum.sf.ca.us>
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: nelson@clutx.clarkson.edu
Organization: The Internet
Lines: 14


   I got the impression that this particular NI5210 driver has different
   maximum sizes for receive and transmit buffers? That's kind of odd.

Probably not too odd, given the architecture of the 82586 Ethernet
controller.  The chip requires you to set up a linked list of buckets
of memory.  Incoming packets get dumped into one or more buckets as
needed automagically by the 82586.  Any memory used for transmitting
gets taken from this linked list.  Multiple packets can be chained and
transmitted by the chip, but I don't think there's much advantage in that.
I'd rather use the memory for incoming packets.
--russ (nelson@clutx [.bitnet | .clarkson.edu])
If you can, help others.
If you can't, at least don't hurt others--the Dalai Lama