(+CC Ido)
On 15/02/2022 07:13, Jakub Kicinski wrote:

On Fri, 11 Feb 2022 15:14:26 +0200 Oleksandr Mazur wrote:

quoted

Whenever bridge driver hits the max capacity of MDBs, it disables
the MC processing (by setting corresponding bridge option), but never
notifies switchdev about such change (the notifiers are called only upon
explicit setting of this option, through the registered netlink interface).

This could lead to situation when Software MDB processing gets disabled,
but this event never gets offloaded to the underlying Hardware.

Fix this by adding a notify message in such case.

Any comments on this one?

We have drivers offloading mdb so presumably this should have a Fixes
tag and go to net, right?

The change looks ok, but it'd be nice to get switchdev folks comment as well.
About the tree, -net should be targeted. I think the issue has existed
since mdb disabled could be offloaded, so the tag should be:

Fixes: 147c1e9b902c ("switchdev: bridge: Offload multicast disabled")