• Oleksij Rempel's avatar
    ethtool: add interface to interact with Ethernet Power Equipment · 18ff0bcd
    Oleksij Rempel authored
    Add interface to support Power Sourcing Equipment. At current step it
    provides generic way to address all variants of PSE devices as defined
    in IEEE 802.3-2018 but support only objects specified for IEEE 802.3-2018 104.4
    PoDL Power Sourcing Equipment (PSE).
    
    Currently supported and mandatory objects are:
    IEEE 802.3-2018 30.15.1.1.3 aPoDLPSEPowerDetectionStatus
    IEEE 802.3-2018 30.15.1.1.2 aPoDLPSEAdminState
    IEEE 802.3-2018 30.15.1.2.1 acPoDLPSEAdminControl
    
    This is minimal interface needed to control PSE on each separate
    ethernet port but it provides not all mandatory objects specified in
    IEEE 802.3-2018.
    
    Since "PoDL PSE" and "PSE" have similar names, but some different values
    I decide to not merge them and keep separate naming schema. This should
    allow as to be as close to IEEE 802.3 spec as possible and avoid name
    conflicts in the future.
    
    This implementation is connected to PHYs instead of MACs because PSE
    auto classification can potentially interfere with PHY auto negotiation.
    So, may be some extra PHY related initialization will be needed.
    
    With WIP version of ethtools interaction with PSE capable link looks
    as following:
    
    $ ip l
    ...
    5: t1l1@eth0: <BROADCAST,MULTICAST> ..
    ...
    
    $ ethtool --show-pse t1l1
    PSE attributs for t1l1:
    PoDL PSE Admin State: disabled
    PoDL PSE Power Detection Status: disabled
    
    $ ethtool --set-pse t1l1 podl-pse-admin-control enable
    $ ethtool --show-pse t1l1
    PSE attributs for t1l1:
    PoDL PSE Admin State: enabled
    PoDL PSE Power Detection Status: delivering power
    Signed-off-by: default avatarkernel test robot <lkp@intel.com>
    Signed-off-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
    Reviewed-by: default avatarBagas Sanjaya <bagasdotme@gmail.com>
    Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
    Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
    18ff0bcd
netlink.c 29.9 KB