[PATCH 1/6] net: macb: use dummy descriptor for RBQP

Bin Meng bmeng.cn at gmail.com
Wed Dec 16 08:17:14 CET 2020


Hi Eugen,

On Wed, Dec 16, 2020 at 2:55 PM <Eugen.Hristev at microchip.com> wrote:
>
> On 03.12.2020 11:25, Claudiu Beznea wrote:
> > In case of multiple queues on RX side the queue scheduler
> > will try to use all the available configured queues (with
> > descriptors having TX_USED bit cleared). If at least one RBQP
> > points to a descriptor with a valid used bit configuration then
> > the reception may block as this may point to any memory. To avoid
> > this scenario all the queues (except queue zero) were disabled by
> > setting DMA descriptors with used bit set on proper RBQP. The driver
> > anyway uses only queue 0 for TX/RX.
> >
> > Signed-off-by: Claudiu Beznea <claudiu.beznea at microchip.com>
> > ---
>
> Hi Anup, Bin, Padmarao,
>
> I noticed on the mailing list that you have been actively working and
> testing the Macb driver on various platforms, we have this series
> outstanding and I want to make sure that it does not break anything on
> your side, so it would be appreciated if you could have a look or test
> it before it goes into master branch.
>

Is this series for Microchip PolarFire SoC?

Regards,
Bin


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