netdev - Re: [PATCH] netfilter: TCP and raw fix for ip_route_me

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Date:	Sun, 07 Aug 2011 22:53:52 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ja@....bg
Cc:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org
Subject: Re: [PATCH] netfilter: TCP and raw fix for ip_route_me_harder

From: Julian Anastasov <ja@....bg>
Date: Sun, 7 Aug 2011 22:11:00 +0300 (EEST)

> 
> 	TCP in some cases uses different global (raw) socket
> to send RST and ACK. The transparent flag is not set there.
> Currently, it is a problem for rerouting after the previous
> change.
> 
> 	Fix it by simplifying the checks in ip_route_me_harder
> and use FLOWI_FLAG_ANYSRC even for sockets. It looks safe
> because the initial routing allowed this source address to
> be used and now we just have to make sure the packet is rerouted.
> 
> 	As a side effect this also allows rerouting for normal
> raw sockets that use spoofed source addresses which was not possible
> even before we eliminated the ip_route_input call.
> 
> Signed-off-by: Julian Anastasov <ja@....bg>

Applied.
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