netdev - Re: [PATCH net-next] bridge: Remove unnecessary vlan_put_tag in br_handle

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Message-Id: <20140122.213005.510576128360790291.davem@davemloft.net>
Date:	Wed, 22 Jan 2014 21:30:05 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	makita.toshiaki@....ntt.co.jp
Cc:	stephen@...workplumber.org, vyasevic@...hat.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] bridge: Remove unnecessary vlan_put_tag in
 br_handle_vlan

From: Toshiaki Makita <makita.toshiaki@....ntt.co.jp>
Date: Wed, 22 Jan 2014 09:29:37 +0900

> br_handle_vlan() pushes HW accelerated vlan tag into skbuff when outgoing
> port is the bridge device.
> This is unnecessary because __netif_receive_skb_core() can handle skbs
> with HW accelerated vlan tag. In current implementation,
> __netif_receive_skb_core() needs to extract the vlan tag embedded in skb
> data. This could cause low network performance especially when receiving
> frames at a high frame rate on the bridge device.
> 
> Signed-off-by: Toshiaki Makita <makita.toshiaki@....ntt.co.jp>

Applied.
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