Allow driver wrappers to indicate maximum remain-on-channel duration

src/drivers/driver.h

@@ -505,6 +505,11 @@ struct wpa_driver_capa {
 	unsigned int flags;
 
 	int max_scan_ssids;
+
+	/**
+	 * max_remain_on_chan - Maximum remain-on-channel duration in msec
+	 */
+	unsigned int max_remain_on_chan;
 };
 
 

src/drivers/driver_nl80211.c

@@ -1157,6 +1157,7 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 	}
 
 	drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
+	drv->capa.max_remain_on_chan = 5000;
 
 	return 0;
 }

src/drivers/driver_test.c

@@ -2386,6 +2386,7 @@ static int wpa_driver_test_get_capa(void *priv, struct wpa_driver_capa *capa)
 		capa->flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME;
 	capa->flags |= WPA_DRIVER_FLAGS_AP;
 	capa->max_scan_ssids = 2;
+	capa->max_remain_on_chan = 60000;
 
 	return 0;
 }

wpa_supplicant/wpa_supplicant.c

@@ -2015,6 +2015,18 @@ next_driver:
 		return -1;
 	}
 
+	if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
+		wpa_s->drv_flags = capa.flags;
+		if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
+			if (ieee80211_sta_init(wpa_s))
+				return -1;
+		}
+		wpa_s->max_scan_ssids = capa.max_scan_ssids;
+		wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
+	}
+	if (wpa_s->max_remain_on_chan == 0)
+		wpa_s->max_remain_on_chan = 1000;
+
 	if (wpa_supplicant_driver_init(wpa_s) < 0)
 		return -1;
 
@@ -2047,15 +2059,6 @@ next_driver:
 		return -1;
 	}
 
-	if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
-		wpa_s->drv_flags = capa.flags;
-		if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
-			if (ieee80211_sta_init(wpa_s))
-				return -1;
-		}
-		wpa_s->max_scan_ssids = capa.max_scan_ssids;
-	}
-
 #ifdef CONFIG_IBSS_RSN
 	wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
 	if (!wpa_s->ibss_rsn) {

wpa_supplicant/wpa_supplicant_i.h

@@ -384,6 +384,7 @@ struct wpa_supplicant {
 	struct wpa_client_mlme mlme;
 	unsigned int drv_flags;
 	int max_scan_ssids;
+	unsigned int max_remain_on_chan;
 
 	int pending_mic_error_report;
 	int pending_mic_error_pairwise;