Re: gigabit ethernet on linux, intel pro/1000 ?

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On Tue, 10 Apr 2001, Jeff Garzik wrote:
> Jones Olatunji wrote:
> > Intel is good so also is 3c9x series.
> > I think either of them is good enough for you, I have use both of them before and they are quite okay.
> > 
> > But if you still insist on a preference any, maybe I will pick Intel.
> 
> Intel is nice hardware, but their driver needs cleanup and review, and
> no docs are available.  Plus, there is a patent issue with their
> software license, which makes me encourage everyone not to use Intel's
> driver software.
> 
> So, only if you have docs and are willing to write your own driver would
> I suggest using Intel hardware at the moment...  acenic is a good one to
> look at instead.

The acenic, hamachi and yellowfin are all aging at this point.

I'm developing the following drivers here at Scyld:
   intel-gige.c		Intel "e1000" board, optical only
   ns820.c		National Semiconductor DP83820 and DP83821 chips

The Intel chip has only a PCI memory space mapping, so that driver
doesn't have a matching diagnostic program.
The advantages of my driver over the Intel-written driver are
   It's released (or will be released) under the GPL
   It eliminates the bogus descriptor cruft of the multi-OS Intel driver
   It has endian-correction, etc. to support non-x86 kernels
The downside is that the driver was written from a "clean room" spec,
and thus doesn't use any magic Intel features.

The ns820 driver works with the new sub-$100 gigabit boards.  It has
only been tested with the 10/100/1000 transceiver on the D-Link board,
and might require configuration tweaks to work with other boards.
Right now the driver uses 32 bit addresses.  I plan to switch to 64 bit
addresses, which means I can't use the priority queues.

Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993

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