Man page 9 : phy_ethtool_sset

phy_ethtool_sset - generic ethtool sset function, handles all the details

int phy_ethtool_sset(struct phy_device *  phydev , struct ethtool_cmd *  cmd );

phydev
    target phy_device struct

cmd
    ethtool_cmd

- We donAqt set port or transceiver, so we donAqt care what they were set to. - phy_start_aneg will make sure forced settings are sane, and choose the next best ones from the ones selected, so we donAqt care if ethtool tries to give us bad values.