netdev - Re: question about netif

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Date:	Wed, 14 Aug 2013 13:44:27 +0300
From:	Rami Rosen <roszenrami@...il.com>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	David Shwatrz <dshwatrz@...il.com>,
	Julia Lawall <julia.lawall@...6.fr>, grant.likely@...aro.org,
	rob.herring@...xeda.com, Netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	devicetree@...r.kernel.org
Subject: Re: question about netif_rx

Hi,
BTW, this is not the only NAPI issue here. When looking into cleanup
of resources in this driver, a call to netif_napi_del() is missing
(though there is a call to  napi_disable(), which is not enough for
proper cleanup).

Best,
Rami Rosen
http://ramirose.wix.com/ramirosen

On Tue, Aug 13, 2013 at 11:41 PM, Francois Romieu <romieu@...zoreil.com> wrote:
> (no top-post nor lazy quote please)
>
> David Shwatrz <dshwatrz@...il.com> :
> [...]
>> In the napi_gro_receive() we check that the device supports
>> NETIF_F_GRO, but I don't see that we inspect checksum or that
>> NETIF_F_GRO is depends on checksum.
>
> napi_gro_receive is irrelevant. Let aside tunnel, the real work happens
> in the protocol specific gro_receive handlers.
>
> However I am an happy retard and I missed that tcp gro stopped depending
> on Rx checksum since commit 861b650101eb0c627d171eb18de81dddb93d395e. :o/
>
> So, yes, napi_gro_receive could be used.
>
> --
> Ueimor
> --
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