[PATCH 2/3] hostapd: Avoid excessive probe response retries

Helmut Schaa helmut.schaa at googlemail.com
Mon Nov 21 02:58:42 EST 2011


On Sat, Nov 19, 2011 at 6:36 PM, Jouni Malinen <j at w1.fi> wrote:
> On Thu, Nov 10, 2011 at 04:21:20PM +0100, Helmut Schaa wrote:
>> Some client implementations only wait a few ms after sending a probe
>> request while scanning. Since probe responses are always sent at a low
>> rate this can eat quite some airtime and it might be impossible to get
>> the frame out before the client leaves the channel again. If the client
>> leaves before all probe reponses where acked this can cause the probe
>> reponse to be retried quite often consuming even more airtime.
>>
>> Hence, add a new noack flag to the driver's send_mlme callback that
>> allows hostapd to request if the driver should expect an ACK for this
>> frame or not.
>>
>> Use the new noack-policy only for broadcast probe requests that contain
>> a wildcard SSID.
>
> Thanks, applied. We can still consider adding a configuration parameter
> for this separately, but it looked fine to push this in as-is now.

Ok, thanks so far, I've still got the config parameter on my TODO list.
Helmut


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