net/ethtool: add netlink interface for the PLCA RS
Add support for configuring the PLCA Reconciliation Sublayer on multi-drop PHYs that support IEEE802.3cg-2019 Clause 148 (e.g., 10BASE-T1S). This patch adds the appropriate netlink interface to ethtool. Signed-off-by: Piergiorgio Beruto <piergiorgio.beruto@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Piergiorgio Beruto
David S. Miller
Родитель
a6f536063b
Коммит
8580e16c28
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@ -1716,6 +1716,141 @@ being used. Current supported options are toeplitz, xor or crc32.
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ETHTOOL_A_RSS_INDIR attribute returns RSS indrection table where each byte
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indicates queue number.
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PLCA_GET_CFG
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============
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Gets the IEEE 802.3cg-2019 Clause 148 Physical Layer Collision Avoidance
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(PLCA) Reconciliation Sublayer (RS) attributes.
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Request contents:
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===================================== ====== ==========================
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``ETHTOOL_A_PLCA_HEADER`` nested request header
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===================================== ====== ==========================
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Kernel response contents:
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====================================== ====== =============================
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``ETHTOOL_A_PLCA_HEADER`` nested reply header
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``ETHTOOL_A_PLCA_VERSION`` u16 Supported PLCA management
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interface standard/version
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``ETHTOOL_A_PLCA_ENABLED`` u8 PLCA Admin State
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``ETHTOOL_A_PLCA_NODE_ID`` u32 PLCA unique local node ID
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``ETHTOOL_A_PLCA_NODE_CNT`` u32 Number of PLCA nodes on the
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network, including the
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coordinator
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``ETHTOOL_A_PLCA_TO_TMR`` u32 Transmit Opportunity Timer
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value in bit-times (BT)
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``ETHTOOL_A_PLCA_BURST_CNT`` u32 Number of additional packets
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the node is allowed to send
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within a single TO
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``ETHTOOL_A_PLCA_BURST_TMR`` u32 Time to wait for the MAC to
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transmit a new frame before
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terminating the burst
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====================================== ====== =============================
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When set, the optional ``ETHTOOL_A_PLCA_VERSION`` attribute indicates which
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standard and version the PLCA management interface complies to. When not set,
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the interface is vendor-specific and (possibly) supplied by the driver.
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The OPEN Alliance SIG specifies a standard register map for 10BASE-T1S PHYs
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embedding the PLCA Reconcialiation Sublayer. See "10BASE-T1S PLCA Management
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Registers" at https://www.opensig.org/about/specifications/.
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When set, the optional ``ETHTOOL_A_PLCA_ENABLED`` attribute indicates the
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administrative state of the PLCA RS. When not set, the node operates in "plain"
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CSMA/CD mode. This option is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.1
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aPLCAAdminState / 30.16.1.2.1 acPLCAAdminControl.
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When set, the optional ``ETHTOOL_A_PLCA_NODE_ID`` attribute indicates the
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configured local node ID of the PHY. This ID determines which transmit
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opportunity (TO) is reserved for the node to transmit into. This option is
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corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.4 aPLCALocalNodeID. The valid
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range for this attribute is [0 .. 255] where 255 means "not configured".
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When set, the optional ``ETHTOOL_A_PLCA_NODE_CNT`` attribute indicates the
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configured maximum number of PLCA nodes on the mixing-segment. This number
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determines the total number of transmit opportunities generated during a
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PLCA cycle. This attribute is relevant only for the PLCA coordinator, which is
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the node with aPLCALocalNodeID set to 0. Follower nodes ignore this setting.
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This option is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.3
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aPLCANodeCount. The valid range for this attribute is [1 .. 255].
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When set, the optional ``ETHTOOL_A_PLCA_TO_TMR`` attribute indicates the
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configured value of the transmit opportunity timer in bit-times. This value
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must be set equal across all nodes sharing the medium for PLCA to work
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correctly. This option is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.5
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aPLCATransmitOpportunityTimer. The valid range for this attribute is
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[0 .. 255].
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When set, the optional ``ETHTOOL_A_PLCA_BURST_CNT`` attribute indicates the
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configured number of extra packets that the node is allowed to send during a
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single transmit opportunity. By default, this attribute is 0, meaning that
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the node can only send a sigle frame per TO. When greater than 0, the PLCA RS
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keeps the TO after any transmission, waiting for the MAC to send a new frame
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for up to aPLCABurstTimer BTs. This can only happen a number of times per PLCA
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cycle up to the value of this parameter. After that, the burst is over and the
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normal counting of TOs resumes. This option is corresponding to
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``IEEE 802.3cg-2019`` 30.16.1.1.6 aPLCAMaxBurstCount. The valid range for this
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attribute is [0 .. 255].
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When set, the optional ``ETHTOOL_A_PLCA_BURST_TMR`` attribute indicates how
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many bit-times the PLCA RS waits for the MAC to initiate a new transmission
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when aPLCAMaxBurstCount is greater than 0. If the MAC fails to send a new
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frame within this time, the burst ends and the counting of TOs resumes.
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Otherwise, the new frame is sent as part of the current burst. This option
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is corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.7 aPLCABurstTimer. The
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valid range for this attribute is [0 .. 255]. Although, the value should be
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set greater than the Inter-Frame-Gap (IFG) time of the MAC (plus some margin)
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for PLCA burst mode to work as intended.
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PLCA_SET_CFG
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============
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Sets PLCA RS parameters.
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Request contents:
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====================================== ====== =============================
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``ETHTOOL_A_PLCA_HEADER`` nested request header
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``ETHTOOL_A_PLCA_ENABLED`` u8 PLCA Admin State
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``ETHTOOL_A_PLCA_NODE_ID`` u8 PLCA unique local node ID
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``ETHTOOL_A_PLCA_NODE_CNT`` u8 Number of PLCA nodes on the
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netkork, including the
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coordinator
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``ETHTOOL_A_PLCA_TO_TMR`` u8 Transmit Opportunity Timer
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value in bit-times (BT)
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``ETHTOOL_A_PLCA_BURST_CNT`` u8 Number of additional packets
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the node is allowed to send
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within a single TO
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``ETHTOOL_A_PLCA_BURST_TMR`` u8 Time to wait for the MAC to
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transmit a new frame before
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terminating the burst
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====================================== ====== =============================
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For a description of each attribute, see ``PLCA_GET_CFG``.
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PLCA_GET_STATUS
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===============
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Gets PLCA RS status information.
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Request contents:
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===================================== ====== ==========================
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``ETHTOOL_A_PLCA_HEADER`` nested request header
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===================================== ====== ==========================
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Kernel response contents:
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====================================== ====== =============================
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``ETHTOOL_A_PLCA_HEADER`` nested reply header
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``ETHTOOL_A_PLCA_STATUS`` u8 PLCA RS operational status
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====================================== ====== =============================
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When set, the ``ETHTOOL_A_PLCA_STATUS`` attribute indicates whether the node is
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detecting the presence of the BEACON on the network. This flag is
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corresponding to ``IEEE 802.3cg-2019`` 30.16.1.1.2 aPLCAStatus.
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Request translation
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===================
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@ -1817,4 +1952,7 @@ are netlink only.
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n/a ``ETHTOOL_MSG_PHC_VCLOCKS_GET``
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n/a ``ETHTOOL_MSG_MODULE_GET``
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n/a ``ETHTOOL_MSG_MODULE_SET``
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n/a ``ETHTOOL_MSG_PLCA_GET_CFG``
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n/a ``ETHTOOL_MSG_PLCA_SET_CFG``
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n/a ``ETHTOOL_MSG_PLCA_GET_STATUS``
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=================================== =====================================
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@ -16616,6 +16616,12 @@ S: Maintained
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F: Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
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F: drivers/iio/chemical/pms7003.c
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PLCA RECONCILIATION SUBLAYER (IEEE802.3 Clause 148)
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M: Piergiorgio Beruto <piergiorgio.beruto@gmail.com>
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L: netdev@vger.kernel.org
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S: Maintained
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F: net/ethtool/plca.c
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PLDMFW LIBRARY
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M: Jacob Keller <jacob.e.keller@intel.com>
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S: Maintained
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@ -802,12 +802,17 @@ int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
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struct phy_device;
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struct phy_tdr_config;
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struct phy_plca_cfg;
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struct phy_plca_status;
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/**
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* struct ethtool_phy_ops - Optional PHY device options
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* @get_sset_count: Get number of strings that @get_strings will write.
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* @get_strings: Return a set of strings that describe the requested objects
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* @get_stats: Return extended statistics about the PHY device.
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* @get_plca_cfg: Return PLCA configuration.
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* @set_plca_cfg: Set PLCA configuration.
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* @get_plca_status: Get PLCA configuration.
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* @start_cable_test: Start a cable test
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* @start_cable_test_tdr: Start a Time Domain Reflectometry cable test
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*
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@ -819,6 +824,13 @@ struct ethtool_phy_ops {
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int (*get_strings)(struct phy_device *dev, u8 *data);
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int (*get_stats)(struct phy_device *dev,
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struct ethtool_stats *stats, u64 *data);
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int (*get_plca_cfg)(struct phy_device *dev,
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struct phy_plca_cfg *plca_cfg);
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int (*set_plca_cfg)(struct phy_device *dev,
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const struct phy_plca_cfg *plca_cfg,
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struct netlink_ext_ack *extack);
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int (*get_plca_status)(struct phy_device *dev,
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struct phy_plca_status *plca_st);
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int (*start_cable_test)(struct phy_device *phydev,
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struct netlink_ext_ack *extack);
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int (*start_cable_test_tdr)(struct phy_device *phydev,
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@ -773,6 +773,63 @@ struct phy_tdr_config {
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};
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#define PHY_PAIR_ALL -1
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/**
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* struct phy_plca_cfg - Configuration of the PLCA (Physical Layer Collision
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* Avoidance) Reconciliation Sublayer.
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*
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* @version: read-only PLCA register map version. -1 = not available. Ignored
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* when setting the configuration. Format is the same as reported by the PLCA
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* IDVER register (31.CA00). -1 = not available.
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* @enabled: PLCA configured mode (enabled/disabled). -1 = not available / don't
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* set. 0 = disabled, anything else = enabled.
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* @node_id: the PLCA local node identifier. -1 = not available / don't set.
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* Allowed values [0 .. 254]. 255 = node disabled.
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* @node_cnt: the PLCA node count (maximum number of nodes having a TO). Only
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* meaningful for the coordinator (node_id = 0). -1 = not available / don't
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* set. Allowed values [1 .. 255].
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* @to_tmr: The value of the PLCA to_timer in bit-times, which determines the
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* PLCA transmit opportunity window opening. See IEEE802.3 Clause 148 for
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* more details. The to_timer shall be set equal over all nodes.
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* -1 = not available / don't set. Allowed values [0 .. 255].
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* @burst_cnt: controls how many additional frames a node is allowed to send in
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* single transmit opportunity (TO). The default value of 0 means that the
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* node is allowed exactly one frame per TO. A value of 1 allows two frames
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* per TO, and so on. -1 = not available / don't set.
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* Allowed values [0 .. 255].
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* @burst_tmr: controls how many bit times to wait for the MAC to send a new
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* frame before interrupting the burst. This value should be set to a value
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* greater than the MAC inter-packet gap (which is typically 96 bits).
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* -1 = not available / don't set. Allowed values [0 .. 255].
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*
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* A structure containing configuration parameters for setting/getting the PLCA
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* RS configuration. The driver does not need to implement all the parameters,
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* but should report what is actually used.
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*/
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struct phy_plca_cfg {
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int version;
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int enabled;
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int node_id;
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int node_cnt;
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int to_tmr;
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int burst_cnt;
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int burst_tmr;
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};
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/**
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* struct phy_plca_status - Status of the PLCA (Physical Layer Collision
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* Avoidance) Reconciliation Sublayer.
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*
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* @pst: The PLCA status as reported by the PST bit in the PLCA STATUS
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* register(31.CA03), indicating BEACON activity.
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*
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* A structure containing status information of the PLCA RS configuration.
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* The driver does not need to implement all the parameters, but should report
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* what is actually used.
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*/
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struct phy_plca_status {
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bool pst;
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};
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/**
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* struct phy_driver - Driver structure for a particular PHY type
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*
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@ -52,6 +52,9 @@ enum {
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ETHTOOL_MSG_PSE_GET,
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ETHTOOL_MSG_PSE_SET,
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ETHTOOL_MSG_RSS_GET,
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ETHTOOL_MSG_PLCA_GET_CFG,
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ETHTOOL_MSG_PLCA_SET_CFG,
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ETHTOOL_MSG_PLCA_GET_STATUS,
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/* add new constants above here */
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__ETHTOOL_MSG_USER_CNT,
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@ -99,6 +102,9 @@ enum {
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ETHTOOL_MSG_MODULE_NTF,
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ETHTOOL_MSG_PSE_GET_REPLY,
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ETHTOOL_MSG_RSS_GET_REPLY,
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ETHTOOL_MSG_PLCA_GET_CFG_REPLY,
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ETHTOOL_MSG_PLCA_GET_STATUS_REPLY,
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ETHTOOL_MSG_PLCA_NTF,
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/* add new constants above here */
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__ETHTOOL_MSG_KERNEL_CNT,
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@ -894,6 +900,25 @@ enum {
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ETHTOOL_A_RSS_MAX = (__ETHTOOL_A_RSS_CNT - 1),
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};
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/* PLCA */
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enum {
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ETHTOOL_A_PLCA_UNSPEC,
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ETHTOOL_A_PLCA_HEADER, /* nest - _A_HEADER_* */
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ETHTOOL_A_PLCA_VERSION, /* u16 */
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ETHTOOL_A_PLCA_ENABLED, /* u8 */
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ETHTOOL_A_PLCA_STATUS, /* u8 */
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ETHTOOL_A_PLCA_NODE_CNT, /* u32 */
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ETHTOOL_A_PLCA_NODE_ID, /* u32 */
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ETHTOOL_A_PLCA_TO_TMR, /* u32 */
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ETHTOOL_A_PLCA_BURST_CNT, /* u32 */
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ETHTOOL_A_PLCA_BURST_TMR, /* u32 */
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/* add new constants above here */
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__ETHTOOL_A_PLCA_CNT,
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ETHTOOL_A_PLCA_MAX = (__ETHTOOL_A_PLCA_CNT - 1)
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};
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/* generic netlink info */
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#define ETHTOOL_GENL_NAME "ethtool"
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#define ETHTOOL_GENL_VERSION 1
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@ -8,4 +8,4 @@ ethtool_nl-y := netlink.o bitset.o strset.o linkinfo.o linkmodes.o rss.o \
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linkstate.o debug.o wol.o features.o privflags.o rings.o \
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channels.o coalesce.o pause.o eee.o tsinfo.o cabletest.o \
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tunnels.o fec.o eeprom.o stats.o phc_vclocks.o module.o \
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pse-pd.o
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pse-pd.o plca.o
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@ -288,6 +288,8 @@ ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = {
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[ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops,
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[ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops,
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[ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops,
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[ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops,
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[ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops,
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};
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static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb)
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@ -603,6 +605,7 @@ ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = {
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[ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops,
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[ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops,
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[ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops,
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[ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops,
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};
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/* default notification handler */
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@ -696,6 +699,7 @@ static const ethnl_notify_handler_t ethnl_notify_handlers[] = {
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[ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify,
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[ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify,
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[ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify,
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[ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify,
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};
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void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data)
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@ -1047,6 +1051,31 @@ static const struct genl_ops ethtool_genl_ops[] = {
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.policy = ethnl_rss_get_policy,
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.maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1,
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},
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{
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.cmd = ETHTOOL_MSG_PLCA_GET_CFG,
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.doit = ethnl_default_doit,
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.start = ethnl_default_start,
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.dumpit = ethnl_default_dumpit,
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.done = ethnl_default_done,
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.policy = ethnl_plca_get_cfg_policy,
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.maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1,
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},
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{
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.cmd = ETHTOOL_MSG_PLCA_SET_CFG,
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.flags = GENL_UNS_ADMIN_PERM,
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.doit = ethnl_set_plca_cfg,
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.policy = ethnl_plca_set_cfg_policy,
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.maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1,
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},
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{
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.cmd = ETHTOOL_MSG_PLCA_GET_STATUS,
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.doit = ethnl_default_doit,
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.start = ethnl_default_start,
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.dumpit = ethnl_default_dumpit,
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.done = ethnl_default_done,
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.policy = ethnl_plca_get_status_policy,
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.maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1,
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},
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};
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static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
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@ -347,6 +347,8 @@ extern const struct ethnl_request_ops ethnl_phc_vclocks_request_ops;
|
|||
extern const struct ethnl_request_ops ethnl_module_request_ops;
|
||||
extern const struct ethnl_request_ops ethnl_pse_request_ops;
|
||||
extern const struct ethnl_request_ops ethnl_rss_request_ops;
|
||||
extern const struct ethnl_request_ops ethnl_plca_cfg_request_ops;
|
||||
extern const struct ethnl_request_ops ethnl_plca_status_request_ops;
|
||||
|
||||
extern const struct nla_policy ethnl_header_policy[ETHTOOL_A_HEADER_FLAGS + 1];
|
||||
extern const struct nla_policy ethnl_header_policy_stats[ETHTOOL_A_HEADER_FLAGS + 1];
|
||||
|
|
@ -388,6 +390,9 @@ extern const struct nla_policy ethnl_module_set_policy[ETHTOOL_A_MODULE_POWER_MO
|
|||
extern const struct nla_policy ethnl_pse_get_policy[ETHTOOL_A_PSE_HEADER + 1];
|
||||
extern const struct nla_policy ethnl_pse_set_policy[ETHTOOL_A_PSE_MAX + 1];
|
||||
extern const struct nla_policy ethnl_rss_get_policy[ETHTOOL_A_RSS_CONTEXT + 1];
|
||||
extern const struct nla_policy ethnl_plca_get_cfg_policy[ETHTOOL_A_PLCA_HEADER + 1];
|
||||
extern const struct nla_policy ethnl_plca_set_cfg_policy[ETHTOOL_A_PLCA_MAX + 1];
|
||||
extern const struct nla_policy ethnl_plca_get_status_policy[ETHTOOL_A_PLCA_HEADER + 1];
|
||||
|
||||
int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info);
|
||||
int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info);
|
||||
|
|
@ -408,6 +413,7 @@ int ethnl_tunnel_info_dumpit(struct sk_buff *skb, struct netlink_callback *cb);
|
|||
int ethnl_set_fec(struct sk_buff *skb, struct genl_info *info);
|
||||
int ethnl_set_module(struct sk_buff *skb, struct genl_info *info);
|
||||
int ethnl_set_pse(struct sk_buff *skb, struct genl_info *info);
|
||||
int ethnl_set_plca_cfg(struct sk_buff *skb, struct genl_info *info);
|
||||
|
||||
extern const char stats_std_names[__ETHTOOL_STATS_CNT][ETH_GSTRING_LEN];
|
||||
extern const char stats_eth_phy_names[__ETHTOOL_A_STATS_ETH_PHY_CNT][ETH_GSTRING_LEN];
|
||||
|
|
|
|||
|
|
@ -0,0 +1,277 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
|
||||
#include <linux/phy.h>
|
||||
#include <linux/ethtool_netlink.h>
|
||||
|
||||
#include "netlink.h"
|
||||
#include "common.h"
|
||||
|
||||
struct plca_req_info {
|
||||
struct ethnl_req_info base;
|
||||
};
|
||||
|
||||
struct plca_reply_data {
|
||||
struct ethnl_reply_data base;
|
||||
struct phy_plca_cfg plca_cfg;
|
||||
struct phy_plca_status plca_st;
|
||||
};
|
||||
|
||||
// Helpers ------------------------------------------------------------------ //
|
||||
|
||||
#define PLCA_REPDATA(__reply_base) \
|
||||
container_of(__reply_base, struct plca_reply_data, base)
|
||||
|
||||
static void plca_update_sint(int *dst, const struct nlattr *attr,
|
||||
bool *mod)
|
||||
{
|
||||
if (!attr)
|
||||
return;
|
||||
|
||||
*dst = nla_get_u32(attr);
|
||||
*mod = true;
|
||||
}
|
||||
|
||||
// PLCA get configuration message ------------------------------------------- //
|
||||
|
||||
const struct nla_policy ethnl_plca_get_cfg_policy[] = {
|
||||
[ETHTOOL_A_PLCA_HEADER] =
|
||||
NLA_POLICY_NESTED(ethnl_header_policy),
|
||||
};
|
||||
|
||||
static int plca_get_cfg_prepare_data(const struct ethnl_req_info *req_base,
|
||||
struct ethnl_reply_data *reply_base,
|
||||
struct genl_info *info)
|
||||
{
|
||||
struct plca_reply_data *data = PLCA_REPDATA(reply_base);
|
||||
struct net_device *dev = reply_base->dev;
|
||||
const struct ethtool_phy_ops *ops;
|
||||
int ret;
|
||||
|
||||
// check that the PHY device is available and connected
|
||||
if (!dev->phydev) {
|
||||
ret = -EOPNOTSUPP;
|
||||
goto out;
|
||||
}
|
||||
|
||||
// note: rtnl_lock is held already by ethnl_default_doit
|
||||
ops = ethtool_phy_ops;
|
||||
if (!ops || !ops->get_plca_cfg) {
|
||||
ret = -EOPNOTSUPP;
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = ethnl_ops_begin(dev);
|
||||
if (!ret)
|
||||
goto out;
|
||||
|
||||
memset(&data->plca_cfg, 0xff,
|
||||
sizeof_field(struct plca_reply_data, plca_cfg));
|
||||
|
||||
ret = ops->get_plca_cfg(dev->phydev, &data->plca_cfg);
|
||||
ethnl_ops_complete(dev);
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int plca_get_cfg_reply_size(const struct ethnl_req_info *req_base,
|
||||
const struct ethnl_reply_data *reply_base)
|
||||
{
|
||||
return nla_total_size(sizeof(u16)) + /* _VERSION */
|
||||
nla_total_size(sizeof(u8)) + /* _ENABLED */
|
||||
nla_total_size(sizeof(u32)) + /* _NODE_CNT */
|
||||
nla_total_size(sizeof(u32)) + /* _NODE_ID */
|
||||
nla_total_size(sizeof(u32)) + /* _TO_TIMER */
|
||||
nla_total_size(sizeof(u32)) + /* _BURST_COUNT */
|
||||
nla_total_size(sizeof(u32)); /* _BURST_TIMER */
|
||||
}
|
||||
|
||||
static int plca_get_cfg_fill_reply(struct sk_buff *skb,
|
||||
const struct ethnl_req_info *req_base,
|
||||
const struct ethnl_reply_data *reply_base)
|
||||
{
|
||||
const struct plca_reply_data *data = PLCA_REPDATA(reply_base);
|
||||
const struct phy_plca_cfg *plca = &data->plca_cfg;
|
||||
|
||||
if ((plca->version >= 0 &&
|
||||
nla_put_u16(skb, ETHTOOL_A_PLCA_VERSION, plca->version)) ||
|
||||
(plca->enabled >= 0 &&
|
||||
nla_put_u8(skb, ETHTOOL_A_PLCA_ENABLED, !!plca->enabled)) ||
|
||||
(plca->node_id >= 0 &&
|
||||
nla_put_u32(skb, ETHTOOL_A_PLCA_NODE_ID, plca->node_id)) ||
|
||||
(plca->node_cnt >= 0 &&
|
||||
nla_put_u32(skb, ETHTOOL_A_PLCA_NODE_CNT, plca->node_cnt)) ||
|
||||
(plca->to_tmr >= 0 &&
|
||||
nla_put_u32(skb, ETHTOOL_A_PLCA_TO_TMR, plca->to_tmr)) ||
|
||||
(plca->burst_cnt >= 0 &&
|
||||
nla_put_u32(skb, ETHTOOL_A_PLCA_BURST_CNT, plca->burst_cnt)) ||
|
||||
(plca->burst_tmr >= 0 &&
|
||||
nla_put_u32(skb, ETHTOOL_A_PLCA_BURST_TMR, plca->burst_tmr)))
|
||||
return -EMSGSIZE;
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
const struct ethnl_request_ops ethnl_plca_cfg_request_ops = {
|
||||
.request_cmd = ETHTOOL_MSG_PLCA_GET_CFG,
|
||||
.reply_cmd = ETHTOOL_MSG_PLCA_GET_CFG_REPLY,
|
||||
.hdr_attr = ETHTOOL_A_PLCA_HEADER,
|
||||
.req_info_size = sizeof(struct plca_req_info),
|
||||
.reply_data_size = sizeof(struct plca_reply_data),
|
||||
|
||||
.prepare_data = plca_get_cfg_prepare_data,
|
||||
.reply_size = plca_get_cfg_reply_size,
|
||||
.fill_reply = plca_get_cfg_fill_reply,
|
||||
};
|
||||
|
||||
// PLCA set configuration message ------------------------------------------- //
|
||||
|
||||
const struct nla_policy ethnl_plca_set_cfg_policy[] = {
|
||||
[ETHTOOL_A_PLCA_HEADER] =
|
||||
NLA_POLICY_NESTED(ethnl_header_policy),
|
||||
[ETHTOOL_A_PLCA_ENABLED] = NLA_POLICY_MAX(NLA_U8, 1),
|
||||
[ETHTOOL_A_PLCA_NODE_ID] = NLA_POLICY_MAX(NLA_U32, 255),
|
||||
[ETHTOOL_A_PLCA_NODE_CNT] = NLA_POLICY_RANGE(NLA_U32, 1, 255),
|
||||
[ETHTOOL_A_PLCA_TO_TMR] = NLA_POLICY_MAX(NLA_U32, 255),
|
||||
[ETHTOOL_A_PLCA_BURST_CNT] = NLA_POLICY_MAX(NLA_U32, 255),
|
||||
[ETHTOOL_A_PLCA_BURST_TMR] = NLA_POLICY_MAX(NLA_U32, 255),
|
||||
};
|
||||
|
||||
int ethnl_set_plca_cfg(struct sk_buff *skb, struct genl_info *info)
|
||||
{
|
||||
struct ethnl_req_info req_info = {};
|
||||
struct nlattr **tb = info->attrs;
|
||||
const struct ethtool_phy_ops *ops;
|
||||
struct phy_plca_cfg plca_cfg;
|
||||
struct net_device *dev;
|
||||
bool mod = false;
|
||||
int ret;
|
||||
|
||||
ret = ethnl_parse_header_dev_get(&req_info,
|
||||
tb[ETHTOOL_A_PLCA_HEADER],
|
||||
genl_info_net(info), info->extack,
|
||||
true);
|
||||
if (!ret)
|
||||
return ret;
|
||||
|
||||
dev = req_info.dev;
|
||||
|
||||
rtnl_lock();
|
||||
|
||||
// check that the PHY device is available and connected
|
||||
if (!dev->phydev) {
|
||||
ret = -EOPNOTSUPP;
|
||||
goto out_rtnl;
|
||||
}
|
||||
|
||||
ops = ethtool_phy_ops;
|
||||
if (!ops || !ops->set_plca_cfg) {
|
||||
ret = -EOPNOTSUPP;
|
||||
goto out_rtnl;
|
||||
}
|
||||
|
||||
ret = ethnl_ops_begin(dev);
|
||||
if (!ret)
|
||||
goto out_rtnl;
|
||||
|
||||
memset(&plca_cfg, 0xff, sizeof(plca_cfg));
|
||||
plca_update_sint(&plca_cfg.enabled, tb[ETHTOOL_A_PLCA_ENABLED], &mod);
|
||||
plca_update_sint(&plca_cfg.node_id, tb[ETHTOOL_A_PLCA_NODE_ID], &mod);
|
||||
plca_update_sint(&plca_cfg.node_cnt, tb[ETHTOOL_A_PLCA_NODE_CNT], &mod);
|
||||
plca_update_sint(&plca_cfg.to_tmr, tb[ETHTOOL_A_PLCA_TO_TMR], &mod);
|
||||
plca_update_sint(&plca_cfg.burst_cnt, tb[ETHTOOL_A_PLCA_BURST_CNT],
|
||||
&mod);
|
||||
plca_update_sint(&plca_cfg.burst_tmr, tb[ETHTOOL_A_PLCA_BURST_TMR],
|
||||
&mod);
|
||||
|
||||
ret = 0;
|
||||
if (!mod)
|
||||
goto out_ops;
|
||||
|
||||
ret = ops->set_plca_cfg(dev->phydev, &plca_cfg, info->extack);
|
||||
if (!ret)
|
||||
goto out_ops;
|
||||
|
||||
ethtool_notify(dev, ETHTOOL_MSG_PLCA_NTF, NULL);
|
||||
|
||||
out_ops:
|
||||
ethnl_ops_complete(dev);
|
||||
out_rtnl:
|
||||
rtnl_unlock();
|
||||
ethnl_parse_header_dev_put(&req_info);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
// PLCA get status message -------------------------------------------------- //
|
||||
|
||||
const struct nla_policy ethnl_plca_get_status_policy[] = {
|
||||
[ETHTOOL_A_PLCA_HEADER] =
|
||||
NLA_POLICY_NESTED(ethnl_header_policy),
|
||||
};
|
||||
|
||||
static int plca_get_status_prepare_data(const struct ethnl_req_info *req_base,
|
||||
struct ethnl_reply_data *reply_base,
|
||||
struct genl_info *info)
|
||||
{
|
||||
struct plca_reply_data *data = PLCA_REPDATA(reply_base);
|
||||
struct net_device *dev = reply_base->dev;
|
||||
const struct ethtool_phy_ops *ops;
|
||||
int ret;
|
||||
|
||||
// check that the PHY device is available and connected
|
||||
if (!dev->phydev) {
|
||||
ret = -EOPNOTSUPP;
|
||||
goto out;
|
||||
}
|
||||
|
||||
// note: rtnl_lock is held already by ethnl_default_doit
|
||||
ops = ethtool_phy_ops;
|
||||
if (!ops || !ops->get_plca_status) {
|
||||
ret = -EOPNOTSUPP;
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = ethnl_ops_begin(dev);
|
||||
if (!ret)
|
||||
goto out;
|
||||
|
||||
memset(&data->plca_st, 0xff,
|
||||
sizeof_field(struct plca_reply_data, plca_st));
|
||||
|
||||
ret = ops->get_plca_status(dev->phydev, &data->plca_st);
|
||||
ethnl_ops_complete(dev);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int plca_get_status_reply_size(const struct ethnl_req_info *req_base,
|
||||
const struct ethnl_reply_data *reply_base)
|
||||
{
|
||||
return nla_total_size(sizeof(u8)); /* _STATUS */
|
||||
}
|
||||
|
||||
static int plca_get_status_fill_reply(struct sk_buff *skb,
|
||||
const struct ethnl_req_info *req_base,
|
||||
const struct ethnl_reply_data *reply_base)
|
||||
{
|
||||
const struct plca_reply_data *data = PLCA_REPDATA(reply_base);
|
||||
const u8 status = data->plca_st.pst;
|
||||
|
||||
if (nla_put_u8(skb, ETHTOOL_A_PLCA_STATUS, !!status))
|
||||
return -EMSGSIZE;
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
const struct ethnl_request_ops ethnl_plca_status_request_ops = {
|
||||
.request_cmd = ETHTOOL_MSG_PLCA_GET_STATUS,
|
||||
.reply_cmd = ETHTOOL_MSG_PLCA_GET_STATUS_REPLY,
|
||||
.hdr_attr = ETHTOOL_A_PLCA_HEADER,
|
||||
.req_info_size = sizeof(struct plca_req_info),
|
||||
.reply_data_size = sizeof(struct plca_reply_data),
|
||||
|
||||
.prepare_data = plca_get_status_prepare_data,
|
||||
.reply_size = plca_get_status_reply_size,
|
||||
.fill_reply = plca_get_status_fill_reply,
|
||||
};
|
||||
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