bgscan-simple: Poll for signal in init

It is not guaranteed that we will get a CQM signal shortly after setting
up monitoring. In order to establish the correct initial background
scanning rate, poll directly for the signal strength.

Signed-off-by: Paul Stewart

wpa_supplicant/bgscan_simple.c

@@ -122,6 +122,15 @@ static void * bgscan_simple_init(struct wpa_supplicant *wpa_s,
 	}
 
 	data->scan_interval = data->short_interval;
+	if (data->signal_threshold) {
+		/* Poll for signal info to set initial scan interval */
+		struct wpa_signal_info siginfo;
+		if (wpa_drv_signal_poll(wpa_s, &siginfo) == 0 &&
+		    siginfo.current_signal >= data->signal_threshold)
+			data->scan_interval = data->long_interval;
+	}
+	wpa_printf(MSG_DEBUG, "bgscan simple: Init scan interval: %d",
+		   data->scan_interval);
 	eloop_register_timeout(data->scan_interval, 0, bgscan_simple_timeout,
 			       data, NULL);