WPS: Use single channel scan if AP channel already known

[thirdparty/hostap.git] / wpa_supplicant / scan.c

diff --git a/wpa_supplicant/scan.c b/wpa_supplicant/scan.c
index 4abc9dada5d833d928b2c27acc80fe02a131c778..16f2bbf05c60b4994d1a9b07982830463f3f9de4 100644 (file)
--- a/wpa_supplicant/scan.c
+++ b/wpa_supplicant/scan.c
@@ -344,6 +344,16 @@ static void wpa_supplicant_optimize_freqs(
                wpa_s->after_wps--;
        }
 
+       if (params->freqs == NULL && wpa_s->known_wps_freq && wpa_s->wps_freq)
+       {
+               /* Optimize provisioning scan based on already known channel */
+               wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz",
+                       wpa_s->wps_freq);
+               params->freqs = os_zalloc(2 * sizeof(int));
+               if (params->freqs)
+                       params->freqs[0] = wpa_s->wps_freq;
+               wpa_s->known_wps_freq = 0; /* only do this once */
+       }
 #endif /* CONFIG_WPS */
 }