[wireless-regdb] [PATCH] regdb: allow 40 MHz on world roaming channels 12/13

Luis R. Rodriguez mcgrof at gmail.com
Tue Dec 4 13:13:52 EST 2012


On Tue, Dec 4, 2012 at 9:48 AM, Johannes Berg <johannes at sipsolutions.net> wrote:
> On Mon, 2012-11-12 at 10:51 +0100, Johannes Berg wrote:
>> From: Johannes Berg <johannes.berg at intel.com>
>>
>> When in world roaming mode, allow 40 MHz to be used
>> on channels 12 and 13 so that an AP that is, e.g.,
>> using HT40+ on channel 9 (in the UK) can be used.
>
> Well, hold on.. this can't possibly work now :(
>
> This is what happens when Luis and I disagree ...
>
> I thought the bandwidth in a given section means the bandwidth that can
> be used from this section,

No, indeed that was the objective.

> Luis implemented it to mean that a channel
> overlapping any part of that section can only use that much bandwidth.

This was a side effect of the checks we have in place, it was not expected.

> Note sure which was intended?

Technically speaking the math should be possible to figure out to
enable HT40 or not based on peer channels and although that was
assumed the user reported it not allowing HT40 due to the peer
channels not allowing HT40. I took your patch as an assumption that
was not possible.

  Luis



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