QCA988x:ath10K in STA mode: Probe_Req() frame is NOT sent over the air, when the device is NOT set to scan_mode

[Ganesh Prasadh]

 > Hi,
 > We are using QCA988x:ath10K driver + OpenWRT 14.x platform and have an issue in sending Probe_Req() out in the air.
 > 
 > 
 > In STA mode Probe_Req() frame is NOT sent over the air, when the device is NOT set to scan_mode. Its simply brought up and using the info from another device's scan list.
 > It looks the firmware is NOT sending this frame and its discarded.
 > 
 > I wish to know what is ath10k firmware's behavior in sending Probe_Request() frame when its NOT in scan_mode.
 > 
 > 
 > Note:
 > - But when I change the code to send Authentication() frame, it goes out and my STA connects to AP
 > - when I trigger manually 'iwlist scan' it sends Probe_Req() in all channels, that was confirmed by capturing packets in wireshark, Broadcast frames are sent in the air
 >
 > Thanks!