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Re: [PATCH v3 4/4] cfg80211: DFS use 10 minutes CAC when weather channels

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> When nominal bandwidth falls completely or partly
> within the band 5600MHz to 5650MHz the CAC time shall
> be 10 minutes.
> This is ETSI requirement. FCC forbids weather channels usage.

Although it is correct to handle that with longer times and all, I don't think 
we should enable weather channels at all, not even for ETSI. Unlike "normal" 
channels, it requires 99.99% detection rate in CAC, which is (I think) 
practically impossible.

I guess we need ath9k (or other drivers, maybe ath10k too) to disallow CAC on 
these channels, if we know that the drivers can do it? Although I don't think 
it's technically possible ...

Cheers,
    Simon
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