netdev - Re: [PATCH net-next 2/2] bnx2x: add RSS capability for GRE traffic

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Date:	Sat, 17 Aug 2013 22:04:26 +0300
From:	Dmitry Kravkov <dkravkov@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jerry Chu <hkchu@...gle.com>, Dmitry Kravkov <dmitry@...adcom.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Eilon Greenstein <eilong@...adcom.com>,
	Tom Herbert <therbert@...gle.com>,
	Maciej Żenczykowski <maze@...gle.com>
Subject: Re: [PATCH net-next 2/2] bnx2x: add RSS capability for GRE traffic

On Sat, Aug 17, 2013 at 10:01 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> On Sat, 2013-08-17 at 21:52 +0300, Dmitry Kravkov wrote:
>
>>
>> Current bnx2x HW is not able to perform CSUM validation for
>> encapsulated packets, so in any case host needs to do that.
>> Today GRO/TPA feature depends on CSUM, but theoretically (i did not
>> investigate it) and probably HW can provide aggregated packets w/o
>> csum validation - this will save headers processing for host.
>
> I am not sure I understand this.
>
> Aggregation cannot be done if csums are not validated.
>
>

Thanks. Eric. So we can't do with current bnx2x HW.
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