netdev - Re: [PATCH v5 1/2] Renesas Ethernet AVB driver proper

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Message-Id: <20150608.151954.191885697349673611.davem@davemloft.net>
Date:	Mon, 08 Jun 2015 15:19:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	sergei.shtylyov@...entembedded.com
Cc:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, devicetree@...r.kernel.org,
	galak@...eaurora.org, netdev@...r.kernel.org,
	richardcochran@...il.com, linux-sh@...r.kernel.org,
	mitsuhiro.kimura.kc@...esas.com
Subject: Re: [PATCH v5 1/2] Renesas Ethernet AVB driver proper

From: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Date: Tue, 09 Jun 2015 00:44:16 +0300

> On 06/04/2015 06:12 AM, David Miller wrote:
> 
>> Furthermore, you should pass the NAPI context into ravb_rx() and use
> 
>    I guess I should have one NAPI context per RX queue?

Yes.

> 
>> it so that you can invoke napi_gro_receive() on all of the packets and
>> therefore support GRO.
> 
>    Hmm, I don't think I have a hardware support for generic RX offload...
> I'm still unsure what it is anyway -- is it used for IP packet
> defragmentation?

It's completely implemented in software, you don't need to do anything
other than properly invoke napi_gro_receive().
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