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-rw-r--r--Documentation/networking/ethtool-netlink.rst1
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diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index d578b8bcd8a4..bede24ef44fd 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -491,6 +491,7 @@ Kernel response contents:
``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value
``ETHTOOL_A_LINKSTATE_EXT_STATE`` u8 link extended state
``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` u8 link extended substate
+ ``ETHTOOL_A_LINKSTATE_EXT_DOWN_CNT`` u32 count of link down events
==================================== ====== ============================
For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns