Roaming ft-over-ds based on RSSI

[Ben Greear]

On 7/31/22 5:36 AM, Dennis Bland wrote:
>> Date: Thu, 7 Jul 2022 05:30:09 -0700
>> From: Ben Greear <greearb at candelatech.com>
>> To: "hostap at lists.infradead.org" <hostap at lists.infradead.org>
>> Subject: Roaming ft-over-ds based on RSSI
>> Message-ID: <e5c4bd2c-1432-3155-ec50-8e67fe2bdb89 at candelatech.com>
>> Content-Type: text/plain; charset=UTF-8; format=flowed
>>
>> Hello,
>>
>> While doing some testing with roaming based on changing RSSI (attenuation), we notice
>> that we cannot do a proper ft-over-ds roam.  If we explicitly ask for ft-ds roam using
>> wpa_cli, then it works as hoped.
>>
>> Maybe some extra code/config-options are needed in the logic that roams based on
>> RSSI?
>>
>> Any suggestions for best way to go about that?
>>
> 
> Back in 2019 we submitted an ft-over-ds patch to the hostap mailing
> list to configure a preference for ft-over-ds via wpa_cli or the .conf
> file, as we noticed wpa_supplicant would always use ft-over-air for
> RSSI roams.  By enabling this option, wpa_supplicant would always use
> ft-over-ds if supported by the AP, but still use ft-over-air if
> ft-over-ds was not available.  In most cases, ft-over-ds is preferred
> as the STA does not need to go off-channel to send the authentication
> request to the target AP.
> 
> Unfortunately the patch was not accepted, and of course that time
> period in the mailing list was somehow lost.  However, spinics still
> has a cached copy:
> 
> https://www.spinics.net/lists/hostap/msg05809.html

Thanks!

We'll give this a try..

--Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com