[PATCH net-next 0/3] Adding PHY Loopback tunable

["Allan W. Nielsen" <allan.nielsen@microsemi.com>]

Hi All,

This series add support for PHY Loopback tunable, and implement it
for MSCC phys.

To configure loopback, the ethtool_tunable structure is used. 'id' must be
set to 'ETHTOOL_PHY_LOOPBACK' and 'data' specifies the loopback type:
ETHTOOL_PHY_LOOPBACK_* (DISABLE, NEAR, FAR or EXTN).

Here is how to configure loopback using ethtool:

Ethtool Help: ethtool -h for PHY tunables
    ethtool --set-phy-tunable DEVNAME      Set PHY tunable
                [ loopback off|near|far|extn ]
    ethtool --get-phy-tunable DEVNAME      Get PHY tunable
                [ loopback ]

Ethtool ex:
  ethtool --set-phy-tunable eth0 loopback near
  ethtool --set-phy-tunable eth0 loopback far
  ethtool --set-phy-tunable eth0 loopback extn
  ethtool --set-phy-tunable eth0 loopback off
  ethtool --get-phy-tunable eth0 loopback

Patches to ethtool will follow shortly.

The feature is tested on Beaglebone Black with VSC 8531 PHY.

Please review.

Best regards
Allan and Raju

Raju Lakkaraju (3):
  ethtool: (uapi) Add ETHTOOL_PHY_LOOPBACK to PHY tunables
  ethtool: Core impl for ETHTOOL_PHY_LOOPBACK tunable.
  net: phy: Add Loopback support in Microsemi PHYs driver

 drivers/net/phy/mscc.c       | 118 +++++++++++++++++++++++++++++++++++++++++++
 include/uapi/linux/ethtool.h |   8 +++
 net/core/ethtool.c           |   2 +
 3 files changed, 128 insertions(+)

-- 
2.7.3