netdev - Re: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE

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Date:	Thu, 15 May 2008 15:10:17 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	"Kok, Auke" <auke-jan.h.kok@...el.com>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	Chris Peterson <cpeterso@...terso.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of
 IRQF_SAMPLE_RANDOM

Kok, Auke wrote:
> Jeff Garzik wrote:
>> Alan Cox wrote:
>>>> In short, I agree with Alan's IRQF_SAMPLE_DUBIOUS, and know of Linux
>>>> customers who also want the same.
>>> They should be made to read the Debian ssh security report - three times
>>> and understand the same would apply to them if something did cause their
>>> network packet arrivals to be observed or non-random
>>>
>>> Far better would be to get your CPU guys to put an RNG back into the
>>> systems or on the CPU die ala VIA. Given I've even seen people using VIA
>>> boxes as a random number feeder (streaming random numbers over SSL) there
>>> is clearly a demand 8)
>> The Treacherous Platform Module includes an RNG.
>>
>> Someone (hi Jesse?) should implement support for TPM_GetRandom.
> 
> Sounds like something he should neither use in the e1000 driver nor implement :)
> 
> This would be an interesting thing to the generic rng support in linux though

That's what I meant.  Support should be implemented in the appropriate 
place in order to solve the problem Jesse's complaining about.  That 
appropriate place being drivers/char/hw_random/

	Jeff




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