Re: Force use of 5GHz band

[Denis Kenzior <denkenz@gmail.com>]

Hi James,

>> Careful about using high factors like this.  Right now the rank is computed 
>> using a double, but truncated to a uint32_t and clamped to USHRT_MAX / 
>> uint16_t.  This works fine, but the FT roaming calculation is a bit more 
>> careless.  Could lead to very funny results.
> 
> I don't think FT uses that ranking factor, but either way yes some huge factor 
> like that shouldn't be needed.
> 

Right, but it uses another factor and truncates to a uint16_t.  So if you have 
USHRT_MAX as rank, multiply then truncate -> fun things happen.

>>
>> We may be better off introducing 2.4GHz factor and suggesting using a 0.0 
>> multiplier to turn bands off.  Or add an explicit setting.
> 
> I actually was thinking this would be nice. We actually don't even run a 2.4ghz 
> network at all so that would reduce extra scanning cycles, even if just a couple 
> seconds. I'll go ahead and add support for 0.0 factors disabling the band, and 
> add a 2.4 factor setting.

Excellent.

Regards,
-Denis