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Re: [PATCH RFC] mac80211: Extend channel to frequency mapping for 802.11j

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On Tue December 28 2010 18:25:10 Jouni Malinen wrote:
> On Tue, Dec 28, 2010 at 10:08:02AM +0100, Johannes Berg wrote:
> > On Tue, 2010-12-28 at 11:01 +0200, Jouni Malinen wrote:
> > > Quite a few.. At least 4.85 GHz and 3.0 GHz for 20 MHz channels and
> > > more for 5 and 10 MHz channels (4.9375 GHz, 4.89 GHz, 3.0025 GHz,
> > > 4.0025 GHz, 5.0025 GHz) in channels defined by IEEE 802.11.
> > 
> > That's what I kinda thought ... doesn't that mean this patch is
> > insufficient?
> 
> Depends on what it is trying to achieve. Based on the Subject: line, it
> aims to add support for channels defined in 802.11j and it does indeed
> seem to do that (most of those odd channel starting frequencies come
> from 802.11y). If the goal were to cover all channels defined in the
> current IEEE 802.11 standard, then sure, it would be insufficient, but
> it is not like we support 3.6 GHz band or sub-20 MHz channels anyway, so
> only the 4.85 GHz starting frequency for some emergency channels from
> 802.11y would not be covered.

Well, yeah, I'm was only concerned about the 802.11j part. And I left out all 
stuff for non 20MHz channels. If it's needed these functions can be extended 
more later... The Japanese need 802.11j now, not a theoretically complete 
channel to frequency mapping... ;)

bruno
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