--- include/linux/ethtool.h

+++ include/linux/ethtool.h

@@ -357,6 +357,8 @@ struct ethtool_rxnfc {

__u32 flow_type;

/* The rx flow hash value or the rule DB size */

__u64 data;

+ /* The following fields are not valid and must not be used for

+ * the ETHTOOL_{G,X}RXFH commands. */

struct ethtool_rx_flow_spec fs;

__u32 rule_cnt;

__u32 rule_locs[0];