diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 49f87980210e..2d04c786b1d7 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -638,6 +638,8 @@ enum ethtool_link_ext_substate_link_logical_mismatch {
 enum ethtool_link_ext_substate_bad_signal_integrity {
 	ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS = 1,
 	ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE,
+	ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_REFERENCE_CLOCK_LOST,
+	ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_ALOS,
 };
 
 /**