Add new drv_flag for indicating user space AP MLME

This makes it easier for hostapd to determine at runtime which
operations to use.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/drivers/driver.h

@@ -831,6 +831,8 @@ struct wpa_driver_capa {
 #define WPA_DRIVER_FLAGS_AP_UAPSD			0x00400000
 /* Driver supports inactivity timer in AP mode */
 #define WPA_DRIVER_FLAGS_INACTIVITY_TIMER		0x00800000
+/* Driver expects user space implementation of MLME in AP mode */
+#define WPA_DRIVER_FLAGS_AP_MLME			0x01000000
 	unsigned int flags;
 
 	int max_scan_ssids;

src/drivers/driver_nl80211.c

@@ -2631,9 +2631,16 @@ 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.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 
-	if (!info.device_ap_sme)
+	if (!info.device_ap_sme) {
 		drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
 
+		/*
+		 * No AP SME is currently assumed to also indicate no AP MLME
+		 * in the driver/firmware.
+		 */
+		drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
+	}
+
 	drv->device_ap_sme = info.device_ap_sme;
 	drv->poll_command_supported = info.poll_command_supported;
 	drv->data_tx_status = info.data_tx_status;