RE: [PATCH 3/5] staging: fsl-dpaa2/eth: Don't account SWA in tx_data_offset

From: Bogdan Purcareata
Date: Fri Oct 27 2017 - 10:31:40 EST


> -----Original Message-----
> From: Dan Carpenter [mailto:dan.carpenter@xxxxxxxxxx]
> Sent: Friday, October 27, 2017 5:27 PM
> To: Bogdan Purcareata <bogdan.purcareata@xxxxxxx>
> Cc: Ruxandra Ioana Radulescu <ruxandra.radulescu@xxxxxxx>;
> gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> devel@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 3/5] staging: fsl-dpaa2/eth: Don't account SWA in
> tx_data_offset
>
>
> On Fri, Oct 27, 2017 at 02:11:34PM +0000, Bogdan Purcareata wrote:
> > When configuring the Tx buffer layout, the software annotation size is
> > mentioned, and MC accounts for it when configuring the frame
> > tx_data_offset. No need to handle it in the driver as well.
> >
>
> The impact is that we allocate slightly less memory right?

Yes, 64B per frame.

Bogdan P.