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To: Yoshikazu Oda <oda@nal.ecl.net>
cc: kjc@csl.sony.co.jp, P.Gevros@cs.ucl.ac.uk, salo@msc.edu,
        freebsd-atm@freebsd.org
Subject: Re: Efficient ATM card.
In-reply-to: Your message of "Mon, 01 Sep 1997 18:21:03 +0900." <199709010921.SAA01057@jamaica.nal.ecl.net>
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Date: Mon, 01 Sep 1997 10:34:57 +0100
Message-ID: <556.873106497@cs.ucl.ac.uk>
From: Panos GEVROS <P.Gevros@cs.ucl.ac.uk>
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We 've been promised a release of Cranor's driver with rate-limit 
functionality within the next 2 or 3 weeks, i 'd expect it to be publicly 
available,
My understanding was that the traffic shaping will be done all in s/w .
When we'll try it i'll let you know.

Panos

Yoshikazu Oda writes:
 |
 |I'm using ENI ATM card with HARP.
 |
 |
 |You can use only 1WORD-DMA for first generation pci chipsets.
 |It is default setting on HARP version 2.1. (So, this version
 |may work on old chipsets' machine.)
 |
 |Also, if you are using newer than triton-2 or else, you can use
 |4WORD-DMA, 8WORD-DMA for more performance by editting source
 |code (eni_transmit.c).
 |
 |
 |I'm also looking for traffic shaping function for ATM card too.
 |I know ENI card supports traffic shaping on its hardware (but no
 |other cards support it). There are 8 channels for PCR timer (only
 |PCR, so it can't support VBR service), and setting two parameters
 |(Pr,Rate_Res) to specify PCR for each channel. But I don't know
 |this may work fine.
 |
 |I'd like to know more about WRT's work for traffic shaping.
 |Is it hardware shaping on ENI card or shaping with software or else? 
 |
 |Regards,
 |
 |
 |--------------------------------
 |Yoshikazu Oda
 |	Integration Services Laboratory
 |	NTT Multimedia Networks Laboratories
 |	E-mail: oda.yoshikazu@na.tnl.ntt.co.jp
 |	        oda@nal.ecl.net
 |