diff options
| author | Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> | 2016-11-17 13:07:22 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-18 12:12:14 -0500 |
| commit | 607c7029146790201e90b58c4235ddff0304d6e0 (patch) | |
| tree | 7f00fbf68b795424f40bfeecf8220c3be5650750 | |
| parent | 968ad9da7e0e333e25442950e10a1b631981ce84 (diff) | |
ethtool: (uapi) Add ETHTOOL_PHY_DOWNSHIFT to PHY tunables
For operation in cabling environments that are incompatible with
1000BASE-T, PHY device may provide an automatic link speed downshift
operation. When enabled, the device automatically changes its 1000BASE-T
auto-negotiation to the next slower speed after a configured number of
failed attempts at 1000BASE-T. This feature is useful in setting up in
networks using older cable installations that include only pairs A and B,
and not pairs C and D.
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com>
Signed-off-by: Allan W. Nielsen <allan.nielsen@microsemi.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/uapi/linux/ethtool.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index 42f696f139ec..f0db7788f887 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -248,9 +248,12 @@ struct ethtool_tunable { void *data[0]; }; +#define DOWNSHIFT_DEV_DEFAULT_COUNT 0xff +#define DOWNSHIFT_DEV_DISABLE 0 + enum phy_tunable_id { ETHTOOL_PHY_ID_UNSPEC, - + ETHTOOL_PHY_DOWNSHIFT, /* * Add your fresh new phy tunable attribute above and remember to update * phy_tunable_strings[] in net/core/ethtool.c |