netdev - Re: [PATCH net] tcp6: don't move IP6CB before xfrm6_policy

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Date:	Mon, 22 Dec 2014 16:48:44 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	nicolas.dichtel@...nd.com
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net] tcp6: don't move IP6CB before xfrm6_policy_check()

From: Nicolas Dichtel <nicolas.dichtel@...nd.com>
Date: Mon, 22 Dec 2014 18:22:48 +0100

> When xfrm6_policy_check() is used, _decode_session6() is called after some
> intermediate functions. This function uses IP6CB(), thus TCP_SKB_CB() must be
> prepared after the call of xfrm6_policy_check().
> 
> Before this patch, scenarii with IPv6 + TCP + IPsec Transport are broken.
> 
> Fixes: 971f10eca186 ("tcp: better TCP_SKB_CB layout to reduce cache line misses")
> Reported-by: Huaibin Wang <huaibin.wang@...nd.com>
> Suggested-by: Eric Dumazet <edumazet@...gle.com>
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>

Applied and queued up for -stable, thanks everyone.
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