On Wed, Apr 18, 2018 at 04:14:26PM +0300, Nikolay Aleksandrov wrote:

We want to avoid sysfs in general, all of networking config and stats
are moving to netlink. It is better controlled and structured for such
changes, also provides nice interfaces for automatic  type checks etc.

Aha, didn't know that. Thanks! :)

Also (but a minor reason) there is no tree/entity in sysfs for the vlans
where to add this. It will either have to be a file which does some
format string hack (like us currently) or will need to add new tree for
them which I'd really like to avoid for the bridge.

Yup, I did some ugly sysfs patches to read queriers per VLAN like that, just
for some basic feedback.  Really awful, although easy to debug because of it
being a simple file ... (I guess I'll have to make friends withe Netlink.)

[..]
Also after my vlan rhastable change, we have per-vlan context even today
(e.g. per-vlan stats use it) so we'll just extend that.

Interesting, this I'll have to look at in more detail!