linux-kernel - Re: [PATCH] netpoll: make arp replies through netpoll use mac address of sender

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Message-ID: <20061208141357.GA2661@hmsreliant.homelinux.net>
Date:	Fri, 8 Dec 2006 09:13:57 -0500
From:	Neil Horman <nhorman@...driver.com>
To:	David Miller <davem@...emloft.net>
Cc:	linux-net@...r.kernel.org, mpm@...enic.com, akpm@...l.org,
	linux-kernel@...r.kernel.org, clalance@...hat.com
Subject: Re: [PATCH] netpoll: make arp replies through netpoll use mac address of sender

On Fri, Dec 08, 2006 at 12:07:27AM -0800, David Miller wrote:
> From: Neil Horman <nhorman@...driver.com>
> Date: Thu, 7 Dec 2006 14:45:53 -0500
> 
> > Back in 2.4 arp requests that were recevied by netpoll were processed in
> > netconsole_receive_skb, where they were responded to using the src mac of the
> > request sender.  In the 2.6 kernel arp_reply is responsible for this function,
> > but instead of using the src mac address of the incomming request, the stored
> > mac address that was registered for the netconsole application is used.  While
> > this is usually ok, it can lead to failures in netpoll in some situations
> > (specifically situations where a network may have two gateways, as arp requests
> > from one may be responded to using the mac address of the other).  This patch
> > reverts the behavior to what we had in 2.4, in which all arp requests are sent
> > back using the src address of the request sender.
> > 
> > Signed-off-by: Neil Horman <nhorman@...driver.com>
> 
> Applied, and I'll push this to -stable, thanks Neil.
> 
> But please submit networking patches next time to
> netdev@...r.kernel.org, most of the networking developers did not see
> this patch because you sent it to the user help list (linux-net)
> instead of the developer list (netdev).
> 
My bad, wasn't thinking.  Thanks guys!
Neil

> Thanks again.

-- 
/***************************************************
 *Neil Horman
 *Software Engineer
 *gpg keyid: 1024D / 0x92A74FA1 - http://pgp.mit.edu
 ***************************************************/
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