On Mon, 12 Feb 2024 17:16:13 +0100 Stanislaw Gruszka wrote:

Add genetlink family bind()/unbind() callbacks when adding/removing
multicast group to/from netlink client socket via setsockopt() or
bind() syscall.

They can be used to track if consumers of netlink multicast messages
emerge or disappear. Thus, a client implementing callbacks, can now
send events only when there are active consumers, preventing unnecessary
work when none exist.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Stanislaw Gruszka <redacted>

LGTM! genetlink code is a bit hot lately, to avoid any conflicts can
I put the first patch (or all of them) on a shared branch for both
netdev and PM to pull in? Once the other two patches are reviewed,
obviously.