linux-kernel - Re: [PATCH net] macvtap: unbreak receiving of gro skb with frag list

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Message-Id: <20151023.023524.817747898949803431.davem@davemloft.net>
Date:	Fri, 23 Oct 2015 02:35:24 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	mst@...hat.com, vyasevic@...hat.com
Subject: Re: [PATCH net] macvtap: unbreak receiving of gro skb with frag
 list

From: Jason Wang <jasowang@...hat.com>
Date: Fri, 23 Oct 2015 00:57:05 -0400

> We don't have fraglist support in TAP_FEATURES. This will lead
> software segmentation of gro skb with frag list. Fixes by having
> frag list support in TAP_FEATURES.
> 
> With this patch single session of netperf receiving were restored from
> about 5Gb/s to about 12Gb/s on mlx4.
> 
> Fixes a567dd6252 ("macvtap: simplify usage of tap_features")
> Cc: Vlad Yasevich <vyasevic@...hat.com>
> Cc: Michael S. Tsirkin <mst@...hat.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied and queued up for -stable, thanks Jason.
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