1 files changed, 8 insertions, 0 deletions

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 3652b239dad1..50c76f4fa402 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -252,9 +252,17 @@ struct ethtool_tunable {
 #define DOWNSHIFT_DEV_DEFAULT_COUNT     0xff
 #define DOWNSHIFT_DEV_DISABLE           0
 
+/* Time in msecs after which link is reported as down
+ * 0 = lowest time supported by the PHY
+ * 0xff = off, link down detection according to standard
+ */
+#define ETHTOOL_PHY_FAST_LINK_DOWN_ON   0
+#define ETHTOOL_PHY_FAST_LINK_DOWN_OFF  0xff
+
 enum phy_tunable_id {
         ETHTOOL_PHY_ID_UNSPEC,
         ETHTOOL_PHY_DOWNSHIFT,
+        ETHTOOL_PHY_FAST_LINK_DOWN,
         /*
          * Add your fresh new phy tunable attribute above and remember to update
          * phy_tunable_strings[] in net/core/ethtool.c