netdev - Re: [PATCH net] ipv6: update skb->csum when CE mark is propagated

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Message-Id: <20160115.150756.1662802308203397449.davem@davemloft.net>
Date:	Fri, 15 Jan 2016 15:07:56 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, herbert@...dor.apana.org.au,
	tom@...bertland.com
Subject: Re: [PATCH net] ipv6: update skb->csum when CE mark is propagated

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 15 Jan 2016 04:56:56 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> When a tunnel decapsulates the outer header, it has to comply
> with RFC 6080 and eventually propagate CE mark into inner header.
> 
> It turns out IP6_ECN_set_ce() does not correctly update skb->csum
> for CHECKSUM_COMPLETE packets, triggering infamous "hw csum failure"
> messages and stack traces.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied and queued up for -stable, thanks Eric.