Re: [RFC PATCH net-next 3/3] net: dsa: listen for SWITCHDEV_{FDB,DEL}_ADD_TO_DEVICE on foreign bridge neighbors

[Tobias Waldekranz]

On Mon Nov 9, 2020 at 3:38 PM CET, Vladimir Oltean wrote:
> On Mon, Nov 09, 2020 at 02:31:11PM +0200, Vladimir Oltean wrote:
> > I need to sit on this for a while. How many DSA drivers do we have that
> > don't do SA learning in hardware for CPU-injected packets? ocelot/felix
> > and mv88e6xxx? Who else? Because if there aren't that many (or any at
> > all except for these two), then I could try to spend some time and see
> > how Felix behaves when I send FORWARD frames to it. Then we could go on
> > full blast with the other alternative, to force-enable address learning
> > from the CPU port, and declare this one as too complicated and not worth
> > the effort.
>
> In fact I'm not sure that I should be expecting an answer to this
> question. We can evaluate the other alternative in parallel. Would you
> be so kind to send some sort of RFC for your TX-side offload_fwd_mark so
> that I could test with the hardware I have, and get a better
> understanding
> of the limitations there?

That is the plan. I have some stuff I need to get done before
though. The current implementation is on a 4.19 kernel, so it's going
to take some time to rebase it.