changes v5:
- set MASTER_SLAVE_CFG_UNSUPPORTED as default value
- send a netlink error message on validation error
- more code fixes

changes v4:
- rename port_mode to master_slave 
- move validation code to net/ethtool/linkmodes.c 
- add UNSUPPORTED state and avoid sending unsupported fields
- more formatting and naming fixes
- tja11xx: support only force mode
- tja11xx: mark state as unsupported

changes v3:
- provide separate field for config and state.
- make state rejected on set
- add validation

changes v2:
- change names. Use MASTER_PREFERRED instead of MULTIPORT
- configure master/slave only on request. Default configuration can be
  provided by PHY or eeprom
- status and configuration to the user space.

Oleksij Rempel (2):
  ethtool: provide UAPI for PHY master/slave configuration.
  net: phy: tja11xx: add support for master-slave configuration

 Documentation/networking/ethtool-netlink.rst | 35 ++++----
 drivers/net/phy/nxp-tja11xx.c                | 43 +++++++++
 drivers/net/phy/phy.c                        |  4 +-
 drivers/net/phy/phy_device.c                 | 94 ++++++++++++++++++++
 include/linux/phy.h                          |  3 +
 include/uapi/linux/ethtool.h                 | 16 +++-
 include/uapi/linux/ethtool_netlink.h         |  2 +
 include/uapi/linux/mii.h                     |  2 +
 net/ethtool/linkmodes.c                      | 45 ++++++++++
 9 files changed, 226 insertions(+), 18 deletions(-)

-- 
2.26.2