From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757173AbYEPOPs (ORCPT ); Fri, 16 May 2008 10:15:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754818AbYEPOPh (ORCPT ); Fri, 16 May 2008 10:15:37 -0400 Received: from caffeine.csclub.uwaterloo.ca ([129.97.134.17]:44995 "EHLO caffeine.csclub.uwaterloo.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752713AbYEPOPg (ORCPT ); Fri, 16 May 2008 10:15:36 -0400 Date: Fri, 16 May 2008 10:15:34 -0400 To: Will Newton Cc: Jeff Garzik , "Kok, Auke" , Rick Jones , "Brandeburg, Jesse" , Alan Cox , Chris Peterson , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE_RANDOM Message-ID: <20080516141534.GD11302@csclub.uwaterloo.ca> References: <20080515142154.0595e475@core> <36D9DB17C6DE9E40B059440DB8D95F52052D71BB@orsmsx418.amr.corp.intel.com> <482C7B18.6060003@garzik.org> <482C7E53.3050300@hp.com> <482C8184.2030906@garzik.org> <482C8550.5000909@intel.com> <482C8D4D.3040702@garzik.org> <20080516132107.GA11304@csclub.uwaterloo.ca> <482D8EE9.10404@garzik.org> <87a5b0800805160659j1e8482efjea2fb8167f755e05@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87a5b0800805160659j1e8482efjea2fb8167f755e05@mail.gmail.com> User-Agent: Mutt/1.5.13 (2006-08-11) From: lsorense@csclub.uwaterloo.ca (Lennart Sorensen) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 16, 2008 at 02:59:03PM +0100, Will Newton wrote: > I don't know egd that well, but from a cursory look it gets data from > such things as w or last (wtmp) which is static on most embedded > boxes. It also uses netstat and snmp - surely this is at least as easy > to manipulate as interrupt timings? I'm not a cryptographer by any > means but it looks as if it works by magic. Last changed 2002, written > in perl. No, I don't think I'll be shipping this on any systems any > time soon. I will certainly keep applying a patch to the kernel to enable the ethernet driver as a source of entropy. I won't expect the upstream kernel to want it, but it certainly is useful to have some source of entropy. Generating an ssl key or the like can take an awful long time if you have no sources at all. The last thing I need is another perl script eating up resources for no good reason. -- Len Sorensen