Share a common helper function for restarting sched_scan

This code sequence was already used at two different places (and an
additional one has been proposed), so add a common helper function to
avoid having to copy-paste this functionality in multiple locations.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/ctrl_iface.c

@@ -8564,10 +8564,7 @@ static int wpas_ctrl_iface_mac_rand_scan(struct wpa_supplicant *wpa_s,
 			}
 		} else if (wpa_s->sched_scanning &&
 			   (type & MAC_ADDR_RAND_SCHED_SCAN)) {
-			/* simulate timeout to restart the sched scan */
-			wpa_s->sched_scan_timed_out = 1;
-			wpa_s->prev_sched_ssid = NULL;
-			wpa_supplicant_cancel_sched_scan(wpa_s);
+			wpas_scan_restart_sched_scan(wpa_s);
 		}
 		return 0;
 	}
@@ -8593,12 +8590,8 @@ static int wpas_ctrl_iface_mac_rand_scan(struct wpa_supplicant *wpa_s,
 		wpas_mac_addr_rand_scan_set(wpa_s, MAC_ADDR_RAND_SCHED_SCAN,
 					    addr, mask);
 
-		if (wpa_s->sched_scanning && !wpa_s->pno) {
-			/* simulate timeout to restart the sched scan */
-			wpa_s->sched_scan_timed_out = 1;
-			wpa_s->prev_sched_ssid = NULL;
-			wpa_supplicant_cancel_sched_scan(wpa_s);
-		}
+		if (wpa_s->sched_scanning && !wpa_s->pno)
+			wpas_scan_restart_sched_scan(wpa_s);
 	}
 
 	if (type & MAC_ADDR_RAND_PNO) {

wpa_supplicant/scan.c

@@ -2745,3 +2745,12 @@ void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s)
 		wpa_supplicant_cancel_sched_scan(wpa_s);
 	}
 }
+
+
+void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s)
+{
+	/* simulate timeout to restart the sched scan */
+	wpa_s->sched_scan_timed_out = 1;
+	wpa_s->prev_sched_ssid = NULL;
+	wpa_supplicant_cancel_sched_scan(wpa_s);
+}

wpa_supplicant/scan.h

@@ -45,6 +45,7 @@ void wpa_scan_free_params(struct wpa_driver_scan_params *params);
 int wpas_start_pno(struct wpa_supplicant *wpa_s);
 int wpas_stop_pno(struct wpa_supplicant *wpa_s);
 void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s);
+void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s);
 
 void wpas_mac_addr_rand_scan_clear(struct wpa_supplicant *wpa_s,
 				   unsigned int type);