Re: [PATCH 0/4] Packet/beacon loss roaming improvements

[James Prestwood <prestwoj@gmail.com>]

Hi Denis,

>>
>> In theory only 5:
>> known_freq_set = known_networks_get_recent_frequencies(5);
>>
> 
> No, that picks the top 5 most recently used networks.  The known 
> frequencies for each of the top 5 are added to the quick scan.  This 
> works okay most of the time, but we do not rotate out known frequencies, 
> so if you have a network with lots of APs spread out over the spectrum, 
> it might end up scanning quite a bit.

Ah, that is exactly the problem then.

I wonder if we should be limiting both known networks and frequencies in 
those networks. We do push new frequencies in order that they are added 
so it may be nice to just pick the first 5 or so in the queue. Then we'd 
be capping 25 frequencies at most instead of the whole spectrum in the 
worst case.

> 
> Regards,
> -Denis