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87dac697a0
Add a devlink parameter to control the number of large groups in a
autogrouped flow table. The default value is 15, and the range is between 1
and 1024.
The size of each large group can be calculated according to the following
formula: size = 4M / (fdb_large_groups + 1).
Examples:
- Set the number of large groups to 20.
$ devlink dev param set pci/0000:82:00.0 name fdb_large_groups \
cmode driverinit value 20
Then run devlink reload command to apply the new value.
$ devlink dev reload pci/0000:82:00.0
- Read the number of large groups in flow table.
$ devlink dev param show pci/0000:82:00.0 name fdb_large_groups
pci/0000:82:00.0:
name fdb_large_groups type driver-specific
values:
cmode driverinit value 20
Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
66 lines
1.6 KiB
ReStructuredText
66 lines
1.6 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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* - ``enable_roce``
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- driverinit
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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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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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