Re: zero-copy TCP fileserving

Jamie Lokier (lkd@tantalophile.demon.co.uk)
Fri, 4 Jun 1999 14:34:37 +0200


I wrote:
> So hardware has to buffer an entire frame before it can insert the
> TCP/UDP checksum.

> As most (if not all) network drivers do load the entire frame onto the
> card before beginning transmission, this is a possibility.

Linus has pointed out that good cards fetch the data from memory as it
is transmitted (is this true?) so I'll eat my words before everyone else
does. :-)

-- Jamie

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