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Re: [PATCH] cfg80211: fix channel to frequency mapping in 5.9GHz range

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On Tue, 2013-10-15 at 11:40 +0200, Dennis H Jensen wrote:

> > Yes, but then before 5910 would have been channel 182. Now you're making
> > it channel 197. That doesn't really make sense at all.
> 
> OK, fair enough, but the fact is that there is a hole in the frequencies
> that were added in 802.11p.

802.11p ... yeah, that's an issue.

> > > In case that doesn't do it. What is needed to get channel 182 to be 5910
> > > MHz as Annex E defines for the US and Europe? Channel to frequency
> > > mapping based on operating class?
> > 
> > Annex E is the 802.11 spec, to get something into that ...
> 
> You misunderstood me; the European operating class 14, for example,
> states that channel 182 is to be 5910.

That's a 10MHz channel only.

In any case, I don't see a good way out. Pretending that the channel
number is something else like you did in this patch is clearly wrong and
will obviously lead to interoperability issues.

I think we need to actually start taking the operating class (or maybe
just the starting frequency) into account in the kernel. How we do that
I don't really know.

johannes

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