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List:       netbsd-tech-net
Subject:    Re: Ethernet address copy performance tweak
From:       Jason R Thorpe <thorpej () wasabisystems ! com>
Date:       2002-08-19 15:35:59
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On Mon, Aug 19, 2002 at 10:01:17AM +0200, Andreas Öman 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 <thorpej@wasabisystems.com>
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