netdev - Re: [PATCH] Revert "ip_gre: make ipgre_tunnel_xmit() not parse network header as IP unconditionally"

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Message-Id: <20130316.230121.871149184534614934.davem@davemloft.net>
Date:	Sat, 16 Mar 2013 23:01:21 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	timo.teras@....fi
Cc:	netdev@...r.kernel.org, yamahata@...inux.co.jp, edumazet@...gle.com
Subject: Re: [PATCH] Revert "ip_gre: make ipgre_tunnel_xmit() not parse
 network header as IP unconditionally"

From: Timo Teräs <timo.teras@....fi>
Date: Wed, 13 Mar 2013 14:37:49 +0200

> This reverts commit 412ed94744d16806fbec3bd250fd94e71cde5a1f.
> 
> The commit is wrong as tiph points to the outer IPv4 header which is
> installed at ipgre_header() and not the inner one which is protocol dependant.
> 
> This commit broke succesfully opennhrp which use PF_PACKET socket with
> ETH_P_NHRP protocol. Additionally ssl_addr is set to the link-layer
> IPv4 address. This address is written by ipgre_header() to the skb
> earlier, and this is the IPv4 header tiph should point to - regardless
> of the inner protocol payload.
> 
> Signed-off-by: Timo Teräs <timo.teras@....fi>

Applied, and queued up for -stable, thanks.
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