nl80211: Fix mgmt RX for device SME in AP mode without monitor

Drivers that use device SME in AP mode may still need to be
subscribed for Action frame RX when monitor interface is not used.
This fixes number of P2P GO operations with ath6kl.

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

src/drivers/driver_nl80211.c

@@ -3163,6 +3163,28 @@ out_err:
 }
 
 
+static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
+{
+	if (nl80211_alloc_mgmt_handle(bss))
+		return -1;
+	wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
+		   "handle %p (device SME)", bss->nl_mgmt);
+
+	if (nl80211_register_frame(bss, bss->nl_mgmt,
+				   (WLAN_FC_TYPE_MGMT << 2) |
+				   (WLAN_FC_STYPE_ACTION << 4),
+				   NULL, 0) < 0)
+		goto out_err;
+
+	return 0;
+
+out_err:
+	eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
+	nl_destroy_handles(&bss->nl_mgmt);
+	return -1;
+}
+
+
 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
 {
 	if (bss->nl_mgmt == NULL)
@@ -6084,6 +6106,10 @@ static int nl80211_setup_ap(struct i802_bss *bss)
 		if (nl80211_mgmt_subscribe_ap(bss))
 			return -1;
 
+	if (drv->device_ap_sme && !drv->use_monitor)
+		if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
+			return -1;
+
 	if (!drv->device_ap_sme && drv->use_monitor &&
 	    nl80211_create_monitor_interface(drv) &&
 	    !drv->device_ap_sme)
@@ -6104,9 +6130,11 @@ static void nl80211_teardown_ap(struct i802_bss *bss)
 {
 	struct wpa_driver_nl80211_data *drv = bss->drv;
 
-	if (drv->device_ap_sme)
+	if (drv->device_ap_sme) {
 		wpa_driver_nl80211_probe_req_report(bss, 0);
-	else if (drv->use_monitor)
+		if (!drv->use_monitor)
+			nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
+	} else if (drv->use_monitor)
 		nl80211_remove_monitor_interface(drv);
 	else
 		nl80211_mgmt_unsubscribe(bss, "AP teardown");