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charset="utf-8" Show details about the structures passed back and forth related to MAC Merge layer configuration, state and statistics. The rendered htmldocs will be much more verbose due to the kerneldoc references. Signed-off-by: Vladimir Oltean --- v2->v3: - reformat tables - delete obsolete netlink attributes and document new ones v1->v2: patch is new Documentation/networking/ethtool-netlink.rst | 89 ++++++++++++++++++++ Documentation/networking/statistics.rst | 1 + 2 files changed, 90 insertions(+) diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/n= etworking/ethtool-netlink.rst index d345f5df248e..31413535dce5 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -223,6 +223,8 @@ Userspace to kernel: ``ETHTOOL_MSG_PSE_SET`` set PSE parameters ``ETHTOOL_MSG_PSE_GET`` get PSE parameters ``ETHTOOL_MSG_RSS_GET`` get RSS settings + ``ETHTOOL_MSG_MM_GET`` get MAC merge layer state + ``ETHTOOL_MSG_MM_SET`` set MAC merge layer parameters =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 Kernel to userspace: @@ -265,6 +267,7 @@ Kernel to userspace: ``ETHTOOL_MSG_MODULE_GET_REPLY`` transceiver module parameters ``ETHTOOL_MSG_PSE_GET_REPLY`` PSE parameters ``ETHTOOL_MSG_RSS_GET_REPLY`` RSS settings + ``ETHTOOL_MSG_MM_GET_REPLY`` MAC merge layer status =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 ``GET`` requests are sent by userspace applications to retrieve device @@ -1868,6 +1871,90 @@ When set, the ``ETHTOOL_A_PLCA_STATUS`` attribute in= dicates whether the node is detecting the presence of the BEACON on the network. This flag is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.2 aPLCAStatus. =20 +MM_GET +=3D=3D=3D=3D=3D=3D + +Retrieve 802.3 MAC Merge parameters. + +Request contents: + + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + ``ETHTOOL_A_MM_HEADER`` nested request header + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +Kernel response contents: + + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D + ``ETHTOOL_A_MM_HEADER`` nested request header + ``ETHTOOL_A_MM_PMAC_ENABLED`` bool set if RX of preemptible and = SMD-V + frames is enabled + ``ETHTOOL_A_MM_TX_ENABLED`` bool set if TX of preemptible fram= es is + administratively enabled (mig= ht be + inactive if verification fail= ed) + ``ETHTOOL_A_MM_TX_ACTIVE`` bool set if TX of preemptible fram= es is + operationally enabled + ``ETHTOOL_A_MM_TX_MIN_FRAG_SIZE`` u32 minimum size of transmitted + non-final fragments, in octets + ``ETHTOOL_A_MM_RX_MIN_FRAG_SIZE`` u32 minimum size of received non-= final + fragments, in octets + ``ETHTOOL_A_MM_VERIFY_ENABLED`` bool set if TX of SMD-V frames is + administratively enabled + ``ETHTOOL_A_MM_VERIFY_STATUS`` u8 state of the verification fun= ction + ``ETHTOOL_A_MM_VERIFY_TIME`` u32 delay between verification at= tempts + ``ETHTOOL_A_MM_MAX_VERIFY_TIME``` u32 maximum verification interval + supported by device + ``ETHTOOL_A_MM_STATS`` nested IEEE 802.3-2018 subclause 30.= 14.1 + oMACMergeEntity statistics co= unters + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D + +The attributes are populated by the device driver through the following +structure: + +.. kernel-doc:: include/linux/ethtool.h + :identifiers: ethtool_mm_state + +The ``ETHTOOL_A_MM_VERIFY_STATUS`` will report one of the values from + +.. kernel-doc:: include/uapi/linux/ethtool.h + :identifiers: ethtool_mm_verify_status + +If ``ETHTOOL_A_MM_VERIFY_ENABLED`` was passed as false in the ``MM_SET`` +command, ``ETHTOOL_A_MM_VERIFY_STATUS`` will report either +``ETHTOOL_MM_VERIFY_STATUS_INITIAL`` or ``ETHTOOL_MM_VERIFY_STATUS_DISABLE= D``, +otherwise it should report one of the other states. + +It is recommended that drivers start with the pMAC disabled, and enable it= upon +user space request. It is also recommended that user space does not depend= upon +the default values from ``ETHTOOL_MSG_MM_GET`` requests. + +``ETHTOOL_A_MM_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set in +``ETHTOOL_A_HEADER_FLAGS``. The attribute will be empty if driver did not +report any statistics. Drivers fill in the statistics in the following +structure: + +.. kernel-doc:: include/linux/ethtool.h + :identifiers: ethtool_mm_stats + +MM_SET +=3D=3D=3D=3D=3D=3D + +Modifies the configuration of the 802.3 MAC Merge layer. + +Request contents: + + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + ``ETHTOOL_A_MM_VERIFY_TIME`` u32 see MM_GET description + ``ETHTOOL_A_MM_VERIFY_ENABLED`` bool see MM_GET description + ``ETHTOOL_A_MM_TX_ENABLED`` bool see MM_GET description + ``ETHTOOL_A_MM_PMAC_ENABLED`` bool see MM_GET description + ``ETHTOOL_A_MM_TX_MIN_FRAG_SIZE`` u32 see MM_GET description + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +The attributes are propagated to the driver through the following structur= e: + +.. kernel-doc:: include/linux/ethtool.h + :identifiers: ethtool_mm_cfg + Request translation =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 @@ -1972,4 +2059,6 @@ are netlink only. n/a ``ETHTOOL_MSG_PLCA_GET_CFG`` n/a ``ETHTOOL_MSG_PLCA_SET_CFG`` n/a ``ETHTOOL_MSG_PLCA_GET_STATUS`` + n/a ``ETHTOOL_MSG_MM_GET`` + n/a ``ETHTOOL_MSG_MM_SET`` =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D diff --git a/Documentation/networking/statistics.rst b/Documentation/networ= king/statistics.rst index c9aeb70dafa2..551b3cc29a41 100644 --- a/Documentation/networking/statistics.rst +++ b/Documentation/networking/statistics.rst @@ -171,6 +171,7 @@ statistics are supported in the following commands: =20 - `ETHTOOL_MSG_PAUSE_GET` - `ETHTOOL_MSG_FEC_GET` + - `ETHTOOL_MSG_MM_GET` =20 debugfs ------- --=20 2.34.1