Subject: Re: Ethernet address copy performance tweak
To: =?iso-8859-1?Q?Andreas_=D6man?= <>
From: Jason R Thorpe <>
List: tech-net
Date: 08/19/2002 08:35:59
On Mon, Aug 19, 2002 at 10:01:17AM +0200, Andreas Íman wrote:

 > Just out of curiosity. Have anyone tried working with prebuilt 
 > ether-headers (stored somewhere in the rtentry for a link local route) ?
 > And just let the NIC DMA gather it for you and no copying needs to be 
 > done at all.
 > Or would that cause too much performance penalties in the NIC because we 
 > consume too many DMA descriptors for one single packet ?

That's certainly something worth looking into, but it would be a fairly
significant change to the network code.

        -- Jason R. Thorpe <>