netdev - Re: [RFC PATCH 3/3] xfrm4: Invalidate all ipv4 routes on IPsec pmtu events

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Message-Id: <20130118.143923.1384219845592340856.davem@davemloft.net>
Date:	Fri, 18 Jan 2013 14:39:23 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	steffen.klassert@...unet.com
Cc:	Yurij.Plotnikov@...etlabs.ru, bhutchings@...arflare.com,
	netdev@...r.kernel.org, Alexandra.Kossovsky@...etlabs.ru
Subject: Re: [RFC PATCH 3/3] xfrm4: Invalidate all ipv4 routes on IPsec
 pmtu events

From: Steffen Klassert <steffen.klassert@...unet.com>
Date: Fri, 18 Jan 2013 09:16:01 +0100

> On IPsec pmtu events we can't access the transport headers of
> the original packet, so we can't find the socket that sent
> the packet. The only chance to notify the socket about the
> pmtu change is to force a relookup for all routes. This
> patch implenents this for the IPsec protocols.
> 
> Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>

Expensive, but I really can't come up with a better idea.
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