netdev - Re: [PATCH net-next-2.6] net: propagate NETIF_F

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Message-Id: <20100926.182728.245387828.davem@davemloft.net>
Date:	Sun, 26 Sep 2010 18:27:28 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	jeffrey.t.kirsher@...el.com, netdev@...r.kernel.org,
	gospo@...hat.com, bphilips@...ell.com, yi.zou@...el.com
Subject: Re: [PATCH net-next-2.6] net: propagate NETIF_F_HIGHDMA to vlans

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 23 Sep 2010 12:46:11 +0200

> Automatically allows vlans to get NETIF_F_HIGHDMA if underlying device
> supports it.
> 
> On 32bit arches (and more precisely if CONFIG_HIGHMEM is enabled), it
> can help to reduce cost of illegal_highdma() and __skb_linearize()
> calls.
> 
> Tested on tg3 , bnx2, bonding, this worked very well.
> 
> This is a generalization of a patch provided by Yi Zou & Jeff Kirsher.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied, thanks Eric.
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