Hi,

Sorry - missed that mail somehow.

cfg80211_validate_beacon_int -> cfg80211_iter_combinations shall be
invoked for the interface combinations , currently.
diff_beacon_int_gcd_min is applicable for the interface combinations
and am not sure how can we validate this for a single interface .
This specific interface can be part of two different groups (
interface combinations) with different values for
"diff_beacon_int_gcd_min". 
I don't think we can get the match for the right set of combination
here , isn't ? 

Well if you have just a single interface, any combination that contains
it is valid, so you'd just continue?

I *think* the code works by checking if any combination applies to the
currently desired state, and rejects if no combination is possible,
that would still be perfectly reasonable here, no?

To make things simple , can we ignore the following rule 
" When >0, any beacon interval must also be bigger than this value." 
and rather have only the following one ? 
" When >0, different beacon intervals must have a GCD that's at least
as big as this value."  (To be more precise , any second interface
which does not meet this rule , will fail to start ) .

Yeah, I suppose we could, but does that really make sense? If you can
have a smaller BI, then you could as well have a smaller GCD, no?

johannes