From owner-freebsd-net  Fri Jul  5 10:24:21 2002
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Date: Fri, 5 Jul 2002 13:27:35 -0400
From: Bosko Milekic <bmilekic@unixdaemons.com>
To: John Polstra <jdp@polstra.com>
Cc: net@FreeBSD.ORG
Subject: Re: virtually contig jumbo mbufs (was Re: new zero copy sockets snapshot)
Message-ID: <20020705132735.A873@unixdaemons.com>
References: <20020619090046.A2063@panzer.kdm.org> <20020705002056.A5365@unixdaemons.com> <20020704231321.A42134@panzer.kdm.org> <15653.35606.290023.621040@grasshopper.cs.duke.edu> <200207051645.g65Gj1lM003467@vashon.polstra.com>
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In-Reply-To: <200207051645.g65Gj1lM003467@vashon.polstra.com>; from jdp@polstra.com on Fri, Jul 05, 2002 at 09:45:01AM -0700
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On Fri, Jul 05, 2002 at 09:45:01AM -0700, John Polstra wrote:
> The BCM570x chips (bge driver) definitely need a single physically
> contiguous buffer for each received packet.

  This is totally ridiculous for gigE hardware, IMO.  Do you know of
  other cards that can't do scatter gather DMA?

> John
> -- 
>   John Polstra
>   John D. Polstra & Co., Inc.                        Seattle, Washington USA
>   "Disappointment is a good sign of basic intelligence."  -- Chögyam Trungpa

Regards,
-- 
Bosko Milekic
bmilekic@unixdaemons.com
bmilekic@FreeBSD.org


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