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

Jouni Malinen j
Sat Nov 19 09:36:06 PST 2011

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.

Jouni Malinen                                            PGP id EFC895FA

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