netdev - Re: r8169 : always copying the rx buffer to new skb

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Message-ID: <4DBF0033.2070804@genband.com>
Date:	Mon, 02 May 2011 13:04:19 -0600
From:	Chris Friesen <chris.friesen@...band.com>
To:	John Lumby <johnlumby@...mail.com>
CC:	Francois Romieu <romieu@...zoreil.com>, netdev@...r.kernel.org,
	Ben Hutchings <bhutchings@...arflare.com>, nic_swsd@...ltek.com
Subject: Re: r8169 :  always copying the rx buffer to new skb

On 04/26/2011 08:18 PM, John Lumby wrote:

> So - question :
> is there any way, when returning from rtl8169_poll, to tell napi
> something like :
> " finish this interrupt context and let something else run on this CPU
> (always CPU0 on my machine) BUT reschedule another napi poll on this
> same device at some time after that "

Does the hardware support any options for interrupt mitigation?  I've 
used some devices where you can specify a minimum time between 
interrupts such that even if NAPI re-enabled interrupts and there were 
packets waiting the hardware would wait a certain time before raising a 
new interrupt.

Chris

-- 
Chris Friesen
Software Developer
GENBAND
chris.friesen@...band.com
www.genband.com
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