Re: [PATCH 1/1] network memory allocator.
From: Evgeniy Polyakov
Date: Mon Aug 14 2006 - 08:37:08 EST
On Mon, Aug 14, 2006 at 04:35:30PM +0400, Evgeniy Polyakov (johnpol@xxxxxxxxxxx) 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.
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.
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