[9fans] ne2000

[jmk@plan9.bell-labs.com jmk@plan9.bell-labs.com]

i can get 100% of a 100Mb/s link with UDP on a 21140 based card.
what are you doing wrong?

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Date: Tue, 22 Jul 97 12:27:37 PDT
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Subject: Re: [9fans] ne2000
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In <199707230448.64603.out.baker@plan9.cs.su.oz.au>
 David Hogan <dhog@lore.plan9.cs.su.oz.au> wrote:

> > the datsheets and application notes for the dp8390 explain most of what you need
> > to know about the wrteched ne2000. they're available on-line at the national
> > semiconductor website.
>
> Thanks, I'll check it out.
>
> > no matter how cheap you say it is, it's not worth the money.
>
> After looking at the driver code, I have to agree.  Reading in
> packets using INSx -- what is this, the stone age??
>
> The target application is talking to an ISDN gateway, so
> efficiency isn't crucial.  But if cable modem ever arrives,
> I'll probably want a better ethernet card (or if I get
> a second computer...).
>
> So, which ethernet cards do PCI bus mastering?  :-)

PCI Cogent Ethernet and Fast Ethernet adapters are very good.
We get 60% of a 100mbits link using UDP. These are not
supported on the release, but you could get the information to
write a driver from Digital Semiconductor
(DECchip 21140A PCI Fast ethenet Lan Controller).
The interface is very similar to a lance controller
and it does scatther send (up to two).