netdev - Re: [PATCH] sky2: don't do GRO on second port

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Date:	Thu, 2 Sep 2010 08:33:27 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	shemminger@...tta.com, eric.dumazet@...il.com,
	herbert@...dor.apana.org.au, netdev@...r.kernel.org
Subject: Re: [PATCH] sky2: don't do GRO on second port

On Wed, Sep 01, 2010 at 02:51:51PM -0700, David Miller wrote:
> The only scenerio you can guarentee that all packets for a given
> flow key will be treated the same is the one where the input device
> is the same as well.
> 
> When there is a single napi --> device mapping, it works, but without
> that invariant it doesn't.

Do you mean a single napi can't be used eg. for vlan_gro and napi_gro?
(napi_gro handles flows for skb->dev different from napi->dev or I
miss something?)

Jarek P.
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