Re: [PATCH 1/1] network memory allocator.

Evgeniy Polyakov
2006-08-14T12:39:25Z

On Mon, Aug 14, 2006 at 04:35:30PM +0400, Evgeniy Polyakov (johnpol@2ka.mipt.ru) wrote:
> > I'm still not clear on how you want to do this, only the trivial case of
> > a sniffer was mentioned by you. To be able to do true zero-copy receive
> > each packet will have to have its own page(s). Simply because you do not
> > know the destination before you receive it, the packet could end up
> > going to a whole different socket that the prev/next. As soon as you
> > start packing multiple packets on 1 page, you've lost the zero-copy
> > receive game.
>
> Userspace can sak for next packet and pointer to the new location will
> be removed.

... returned.

The same will be applied for sending support - userspace will request
new packet with given size and pointer to some chunk inside mapped area
will be returned.

--
Evgeniy Polyakov