diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index b67af60..3350870 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -492,11 +492,12 @@
 	__u64		data_mask;
 
 	__s32		action;
-#define ETHTOOL_RXNTUPLE_ACTION_DROP -1		/* drop packet */
+#define ETHTOOL_RXNTUPLE_ACTION_DROP	(-1)	/* drop packet */
+#define ETHTOOL_RXNTUPLE_ACTION_CLEAR	(-2)	/* clear filter */
 };
 
 /**
- * struct ethtool_rx_ntuple - command to set RX flow filter
+ * struct ethtool_rx_ntuple - command to set or clear RX flow filter
  * @cmd: Command number - %ETHTOOL_SRXNTUPLE
  * @fs: Flow filter specification
  */