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Re: [RFC 1/5] cfg80211: regulatory rules, fix bw checking

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On Wed, 2014-01-15 at 17:05 +0100, Janusz Dziedzic wrote:

> > We did discuss something like this previously (and see our todo list on
> > the wiki), but this isn't just some arbitrary internal change, it
> > completely changes the interpretation of the regulatory database.
> >
> 
> We need this because of such split DFS REG_RULE for ETSI:

In general, I totally think what you're proposing makes sense, and I
also think we should take it further like here:
http://wireless.kernel.org/en/developers/todo-list/regulatory

However I do think that should be considered carefully in terms of the
userspace impact/change.

> -       (5250 - 5330 @ 80), (N/A, 20), DFS
> -       (5490 - 5710 @ 80), (N/A, 27), DFS
> +       (5250 - 5330 @ 80), (N/A, 20), (60), DFS
> +       (5490 - 5590 @ 80), (N/A, 27), (60), DFS
> +       (5590 - 5650 @ 80), (N/A, 27), (600), DFS   // here different
> CAC time but still 80MHz should be available
> +       (5650 - 5710 @ 80), (N/A, 27), (60), DFS
> 
> In the future could be also usefull for 160MHz:
>         (5170 - 5250 @ 160), (N/A, 20)
>         (5250 - 5330 @ 160), (N/A, 20), DFS

Yes, the whole @xyz thing is a bit superfluous, I believe it should
really be @unlimited (meaning only restriction is that it fits) for most
countries.

> We can implement CAC time as hardcoded (already send such patches some
> time ago) one but seems this is close connected with regulatory
> configuration and seems like good idea put this in regulatory db.

I totally agree, this is a good idea.

johannes

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