rndis_wlan: set current packet filter to zero on stop

Set current packet filter to zero to block receiving data packets from
device.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rndis_wlan.c

@@ -2530,7 +2530,8 @@ static int rndis_wlan_reset(struct usbnet *usbdev)
 	if (retval)
 		devwarn(usbdev, "rndis_reset() failed: %d", retval);
 
-	/* rndis_reset cleared multicast list, so restore here. */
+	/* rndis_reset cleared multicast list, so restore here.
+	   (set_multicast_list() also turns on current packet filter) */
 	set_multicast_list(usbdev);
 
 	queue_delayed_work(priv->workqueue, &priv->stats_work,
@@ -2544,6 +2545,7 @@ static int rndis_wlan_stop(struct usbnet *usbdev)
 {
 	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 	int retval;
+	__le32 filter;
 
 	devdbg(usbdev, "rndis_wlan_stop");
 
@@ -2560,6 +2562,12 @@ static int rndis_wlan_stop(struct usbnet *usbdev)
 		priv->scan_request = NULL;
 	}
 
+	/* Set current packet filter zero to block receiving data packets from
+	   device. */
+	filter = 0;
+	rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
+								sizeof(filter));
+
 	return retval;
 }