netdev - Re: some failures with vxlan offloads..

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Message-ID: <54508020.1040305@mellanox.com>
Date:	Wed, 29 Oct 2014 07:50:24 +0200
From:	Or Gerlitz <ogerlitz@...lanox.com>
To:	Tom Herbert <therbert@...gle.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: some failures with vxlan offloads..

On 10/28/2014 5:36 PM, Tom Herbert wrote:
>> I wonder if we have another bug somewhere... when both sides were offloaded,
>> >it works even with the mlx4 bug, canyou explain that?is it possible that the
>> >GRO stack somehow covers on the bug when both sides are offloaded and
>> >GRO/VXLAN comes into play?
>>
> Look at the receive side. As I mentioned, if the device is returning
> checksum-unnecessary and setting csum_level to 1 (inner checksum was
> validated) then stack won't try to verify the outer checksum. So in
> this case if outer checksum is incorrect nobody complains about it.

OK, I'll look there. Anything that should worries us at that stack trace 
I sent in my initial email of this thread, or you think this is related 
to the mlx4 driver checksum bug?

Or.

>

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