• Hadar Hen Zion's avatar
    net/mlx4_en: Add support for hardware accelerated 802.1ad vlan · e38af4fa
    Hadar Hen Zion authored
    To enable device support in accelerated 802.1ad vlan, the port
    capability "packet has vlan enable" (phv_en) should be set.
    Firmware won't work properly, in case phv_en is not set.
    
    The user can enable "phv_en" port capability with the new ethtool
    private flag phv-bit. The phv-bit private flag default value is OFF,
    users who are interested in 802.1ad hardware acceleration should turn ON
    the phv-bit private flag:
    $ ethtool --set-priv-flags eth1 phv-bit on
    
    Once the private flag is set, the device is ready for 802.1ad vlan
    acceleration.
    
    The user should also change the interface device features and turn on
    "tx-vlan-stag-hw-insert" which is off by default:
    $ ethtool -K eth1  tx-vlan-stag-hw-insert on
    
    "phv-bit" private flag setting is available only for Physical
    Functions(PF), the Virtual Function (VF) will be able to use the feature
    by setting "tx-vlan-stag-hw-insert" ethtool device feature only if the
    feature was enabled by the Hypervisor.
    Signed-off-by: default avatarHadar Hen Zion <hadarh@mellanox.com>
    Signed-off-by: default avatarAmir Vadai <amirv@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    e38af4fa
mlx4_en.h 24.3 KB