Date: Mon, 01 Sep 1997 10:34:57 +0100 From: Panos GEVROS <P.Gevros@cs.ucl.ac.uk> 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. Message-ID: <556.873106497@cs.ucl.ac.uk> In-Reply-To: Your message of "Mon, 01 Sep 1997 18:21:03 %2B0900." <199709010921.SAA01057@jamaica.nal.ecl.net>
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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 |
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