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Date:	Wed, 21 May 2014 17:20:16 -0400 (EDT)
From:	David Miller <>
Subject: Re: [PATCH net v2] ipv6: gro: fix CHECKSUM_COMPLETE support

From: Eric Dumazet <>
Date: Mon, 19 May 2014 21:56:34 -0700

> From: Eric Dumazet <>
> When GRE support was added in linux-3.14, CHECKSUM_COMPLETE handling
> broke on GRE+IPv6 because we did not update/use the appropriate csum :
> GRO layer is supposed to use/update NAPI_GRO_CB(skb)->csum instead of
> skb->csum
> Tested using a GRE tunnel and IPv6 traffic. GRO aggregation now happens
> at the first level (ethernet device) instead of being done in gre
> tunnel. Native IPv6+TCP is still properly aggregated.
> Fixes: bf5a755f5e918 ("net-gre-gro: Add GRE support to the GRO stack")
> Signed-off-by: Eric Dumazet <>
> Cc: Jerry Chu <>
> ---
> v2: use nlen instead of sizeof(*iph) to support extension headers

Applied and queued up for -stable, thanks.
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