On Tuesday 08 March 2016 10:25 PM, Johannes Berg wrote: > On Mon, 2016-03-07 at 12:42 +0530, Vasanthakumar Thiagarajan wrote: >> Especially during off-channel scan user space might be interested >> in probe reponse frames along with beacon to build a list >> of preferred channel and bssid which could be sent to the stations >> around for better spectrum management. Do not drop probe response >> frame in AP mode and advertise driver's capability to receive probe >> response frame in AP mode to user space. > > I'm not convinced that this is a good idea - these frames will still > populate the BSS cache, and it's not really quite well-specified what > happens when you have both [1] > > I also don't understand the use case; "might be interested" is ... very > vague.
When an user space wants to have control over the duration of off-channel (single channel) scan it could use remain-on-channel interface instead of trigger_scan to perform off-channel scan. I dont think BSS cache will be updated with the BSS information received during remain-on-channel. In this case, user space could use probe response frames to build BSS list. Vasanth
