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SubjectRe: zero-copy TCP
Jes Sorensen writes:
> >>>>> "Richard" == Richard Gooch <rgooch@ras.ucalgary.ca> writes:
>
> Richard> Andrew Morton writes:
> >> All of them except the 3c905 provide hardware Rx and Tx
> >> checksumming of IP, TCP and UDP headers. No 64 bit addressing
> >> support.
>
> Richard> And does the driver support it? Has anyone benchmarked the
> Richard> performance difference (if any)?
>
> There isn't much gain from using it when we can't do zero copy xmits
> in the first place. It might be worth enabling for receive though.

I thought you said some of the GigE drivers supported this? Or were
you just saying that the GigE cards were some of the few which
supported scatter/gather DMA and IP checksumming?

Regards,

Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca
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