netdev - Re: Regression in mvneta with XDP patches

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Date:   Mon, 11 Nov 2019 17:12:55 +0200
From:   Ilias Apalodimas <ilias.apalodimas@...aro.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Lorenzo Bianconi <lorenzo@...nel.org>, brouer@...hat.com,
        netdev <netdev@...r.kernel.org>
Subject: Re: Regression in mvneta with XDP patches

On Mon, Nov 11, 2019 at 04:09:07PM +0100, Andrew Lunn wrote:
> > looking at the dts, could you please confirm mvneta is using hw or sw buffer manager
> > on this board? Moreover are you using DSA as well?
> 
> So my reply to Ilias answered the first question. And yes, i'm using
> DSA. But that should not matter, mvneta is just receiving frames which
> happen to have an extra header after the two MAC addresses.
> 
In theory (famous last words) DSA or not shouldn't be affected by this. 
The driver was already allocating a page per packet before our changes. 
We just allocate that page via page_pool.

Thanks
/Ilias