95 lines
2.5 KiB
ReStructuredText
95 lines
2.5 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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====================
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mlx5 devlink support
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====================
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This document describes the devlink features implemented by the ``mlx5``
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device driver.
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Parameters
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==========
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.. list-table:: Generic parameters implemented
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* - Name
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- Mode
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- Validation
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* - ``enable_roce``
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- driverinit
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- Type: Boolean
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* - ``io_eq_size``
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- driverinit
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- The range is between 64 and 4096.
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* - ``event_eq_size``
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- driverinit
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- The range is between 64 and 4096.
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* - ``max_macs``
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- driverinit
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- The range is between 1 and 2^31. Only power of 2 values are supported.
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The ``mlx5`` driver also implements the following driver-specific
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parameters.
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.. list-table:: Driver-specific parameters implemented
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:widths: 5 5 5 85
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* - Name
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- Type
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- Mode
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- Description
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* - ``flow_steering_mode``
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- string
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- runtime
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- Controls the flow steering mode of the driver
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* ``dmfs`` Device managed flow steering. In DMFS mode, the HW
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steering entities are created and managed through firmware.
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* ``smfs`` Software managed flow steering. In SMFS mode, the HW
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steering entities are created and manage through the driver without
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firmware intervention.
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* - ``fdb_large_groups``
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- u32
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- driverinit
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- Control the number of large groups (size > 1) in the FDB table.
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* The default value is 15, and the range is between 1 and 1024.
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* - ``esw_multiport``
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- Boolean
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- runtime
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- Control MultiPort E-Switch shared fdb mode.
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An experimental mode where a single E-Switch is used and all the vports
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and physical ports on the NIC are connected to it.
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An example is to send traffic from a VF that is created on PF0 to an
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uplink that is natively associated with the uplink of PF1
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Note: Future devices, ConnectX-8 and onward, will eventually have this
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as the default to allow forwarding between all NIC ports in a single
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E-switch environment and the dual E-switch mode will likely get
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deprecated.
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Default: disabled
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The ``mlx5`` driver supports reloading via ``DEVLINK_CMD_RELOAD``
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Info versions
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=============
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The ``mlx5`` driver reports the following versions
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.. list-table:: devlink info versions implemented
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:widths: 5 5 90
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* - Name
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- Type
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- Description
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* - ``fw.psid``
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- fixed
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- Used to represent the board id of the device.
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* - ``fw.version``
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- stored, running
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- Three digit major.minor.subminor firmware version number.
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