> > Moving the radio back to the creators namespace would be the most
> > consistent behavior, so I'll check how difficult such a reverse
> > lookup is. We then would delete the radio only if it is in the
> > creators namespace, or if the creators namespace is gone. Does that
> > make sense?

> It does make sense, but it does also feel a bit complicated. 

Yes, and proper locking gets difficult when using cfg80211_set_netns(),
which can sleep. This would probably need larger changes in the locking
code, but that's IMO not worth the effort.

> Perhaps just special-case the init_net case for consistency with the
> existing behaviour, and reserve netgroup 0 for that so we can easily
> check for it?

I'll do that in a v2, following immediately.

> > I suspect you should be defining a structure that currently 
> > containsĀ one integer member. Something (maybe a compile time 
> > assert) needs to check that buffer space you are accessing (where 
> > ever it is) is large enough.
> 
> It does look a bit awkward, but there's no value in having a struct -
> you still have an opaque pointer here and cast it to something whose
> size you assume to be present... it really makes no difference.

I agree there is no added safety when using a struct; Nonetheless have
I added one in v2, and is it just for any future member additions.

Best regards
Martin
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