Re: [Bridge] [PATCH net-next v2 0/8] net: bridge: add flush filtering support

[Jakub Kicinski <kuba@kernel.org>]

On Tue, 12 Apr 2022 00:17:14 +0300 Nikolay Aleksandrov wrote:
> > Yup, basically the policy is defined in the core, so the types are
> > known. We can extract the fields from the message there, even if 
> > the exact meaning of the fields gets established in the callback.
> 
> That sounds nice, but there are a few catches, f.e. some ndo_fdb implementations
> check if attributes were set, i.e. they can also interpret 0, so it will require
> additional state (either special value, bitfield or some other way of telling them
> it was actually present but 0).
> Anyway I think that is orthogonal to adding the flush support, it's a nice cleanup but can
> be done separately because it will have to be done for all ndo_fdb callbacks and I
> suspect the change will grow considerably.
> OTOH the flush implementation via delneigh doesn't require a new ndo_fdb call way,
> would you mind if I finish that up without the struct conversion?

Not terribly, go ahead.