Re: [PATCH v2 net-next] net: core: use listified Rx for GRO_NORMAL in napi_gro_receive()

Nicholas Johnson
2019-11-25T13:07:11Z

On Mon, Nov 25, 2019 at 12:42:44PM +0100, Paolo Abeni wrote:
> I think it would be nice moving the iwlwifi driver to full/plain NAPI
> mode. The interrupt handler could keep processing extra work as it does
> now and queue real pkts on some internal queue, and than schedule the
> relevant napi, which in turn could process such queue in the napi poll
> method. Likely I missed tons of details and/or oversimplified it...

It must have something to do with iwlwifi (as if we needed more
evidence). I just booted a different variant of the Dell XPS 9370 which
has Qualcomm Wi-Fi [168c:003e] (ath10k_pci.ko), instead of Intel Wi-Fi,
from the same USB SSD as before, and it has no issues whatsoever.

My regression report quickly blown up to be way over my head in terms of
understanding, but I will keep monitoring the discussions and try to
learn from it. Everybody, please keep me CC'd into any further
communications with driver teams, as I am genuinely interested in the
journey and the outcome.

> Cheers,
>
> Paolo
>
>
Cheers,
Nicholas