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

From: Vladimir Oltean
Date: Wed Nov 11 2020 - 05:36:08 EST


Hi Alexandra,

On Wed, Nov 11, 2020 at 11:13:03AM +0100, Alexandra Winter wrote:
> On 08.11.20 18:23, Vladimir Oltean wrote:
> > On Sun, Nov 08, 2020 at 10:09:25PM +0800, DENG Qingfang wrote:
> >> Can it be turned off for switches that support SA learning from CPU?
> >
> > Is there a good reason I would add another property per switch and not
> > just do it unconditionally?
> >
> I have a similar concern for a future patch, where I want to turn on or off, whether the
> device driver listens to SWITCHDEV_{FDB,DEL}_ADD_TO_DEVICE for a certain interface.
> (Options will be: static MACs only, learning in the device or learning in bridge and notifications to device)
> What about 'bridge link set dev $netdev learning_sync on self' respectively the corresponding netlink message?

My understanding is that "learning_sync" is for pushing learnt addresses
from device to bridge, not from bridge to device.