Re: Regarding zerocopy implementation ...

Robert Love (rml@tech9.net)
06 Nov 2002 16:46:24 -0500

On Wed, 2002-11-06 at 10:23, Manish Lachwani wrote:
> Is there a zerocopy receive implementation in Linux? I know that FreeBSD
> 5.0-CURRENT has such an implementation named zerocopy sockets and when used
> with a Alteon Tigon II NIC with header splitting turned on in Firmware,
> works well. Do we have any such implementation in Linux? Any reponse is
> greatly appreciated ...

Yes, we have zero-copy networking if the device supports the requisite
features and the driver is so coded.

Quick glance over 2.4, it looks like the following drivers support
zero-copy networking: via-rhine, tg3, sunhme, sungem, starfire, ns83820,
dl2k, acenic, 8139too, 8139cp, 3c59x family (includes 3c9xx), Intel
e100, and Intel e1000.

Robert Love

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