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| author | Oleksij Rempel <o.rempel@pengutronix.de> | 2020-05-20 09:29:14 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-22 03:18:00 +0300 |
| commit | 8066021915924f58ed338bf38208215f5a7355f6 (patch) | |
| tree | 2433e62686485794774f5366c6f86b2efff9f4f2 /Documentation/networking/ethtool-netlink.rst | |
| parent | b0301a5a288d804374b194e755180967ff7a295b (diff) | |
| download | linux-8066021915924f58ed338bf38208215f5a7355f6.tar.xz | |
ethtool: provide UAPI for PHY Signal Quality Index (SQI)
Signal Quality Index is a mandatory value required by "OPEN Alliance
SIG" for the 100Base-T1 PHYs [1]. This indicator can be used for cable
integrity diagnostic and investigating other noise sources and
implement by at least two vendors: NXP[2] and TI[3].
[1] http://www.opensig.org/download/document/218/Advanced_PHY_features_for_automotive_Ethernet_V1.0.pdf
[2] https://www.nxp.com/docs/en/data-sheet/TJA1100.pdf
[3] https://www.ti.com/product/DP83TC811R-Q1
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ethtool-netlink.rst')
| -rw-r--r-- | Documentation/networking/ethtool-netlink.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index eed46b6aa07d..7e651ea33eab 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -454,10 +454,12 @@ Request contents: Kernel response contents: - ==================================== ====== ========================== + ==================================== ====== ============================ ``ETHTOOL_A_LINKSTATE_HEADER`` nested reply header ``ETHTOOL_A_LINKSTATE_LINK`` bool link state (up/down) - ==================================== ====== ========================== + ``ETHTOOL_A_LINKSTATE_SQI`` u32 Current Signal Quality Index + ``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value + ==================================== ====== ============================ For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns carrier flag provided by ``netif_carrier_ok()`` but there are drivers which |