[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Sun, 10 Oct 2010 02:09:24 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: Patrick Simmons <linuxrocks123@...scape.net>
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH] Add IRQF_SAMPLE_RANDOM Flag to forcedeth
Patrick Simmons wrote:
> This patch adds the IRQF_SAMPLE_RANDOM flag to the forcedeth driver,
> allowing the interrupt timing for forcedeth to be used for entropy
> generation. This should help /dev/random generate more secure random
> numbers on machines using this driver.
[...]
We don't enable this for network drivers any more because:
1. At high packet rates, interrupt moderation makes interrupts very
regular.
2. At low packet rates, a malicious sender can control the interrupt
timing.
Ben.
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists