Re: zero copy

Emiliano Gabrielli (emiliano.gabrielli@roma2.infn.it)
Fri, 7 Feb 2003 11:04:59 +0100 (CET)

<quote who="Venkat Raghu">
>
>
> Hi,
>
> What is zero copy mechanism in ethernet drivers.
>
> Regards
> Venkat

Zero copy is intended to bypass the need of copying the user space buffer in kernel
space via copy_from_user.

It is achieved by mapping dma buffer in user space for exaple so that eth driver can
directly use them for dma

-- 
Emiliano Gabrielli


dip. di Fisica
2° Università di Roma "Tor Vergata"





-- 
Emiliano Gabrielli


dip. di Fisica
2° Università di Roma "Tor Vergata"




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