mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 05:41:55 +00:00
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
|
|
|
|
====================
|
|
mlx5 devlink support
|
|
====================
|
|
|
|
This document describes the devlink features implemented by the ``mlx5``
|
|
device driver.
|
|
|
|
Parameters
|
|
==========
|
|
|
|
.. list-table:: Generic parameters implemented
|
|
|
|
* - Name
|
|
- Mode
|
|
* - ``enable_roce``
|
|
- driverinit
|
|
|
|
The ``mlx5`` driver also implements the following driver-specific
|
|
parameters.
|
|
|
|
.. list-table:: Driver-specific parameters implemented
|
|
:widths: 5 5 5 85
|
|
|
|
* - Name
|
|
- Type
|
|
- Mode
|
|
- Description
|
|
* - ``flow_steering_mode``
|
|
- string
|
|
- runtime
|
|
- Controls the flow steering mode of the driver
|
|
|
|
* ``dmfs`` Device managed flow steering. In DMFS mode, the HW
|
|
steering entities are created and managed through firmware.
|
|
* ``smfs`` Software managed flow steering. In SMFS mode, the HW
|
|
steering entities are created and manage through the driver without
|
|
firmware intervention.
|
|
* - ``fdb_large_groups``
|
|
- u32
|
|
- driverinit
|
|
- Control the number of large groups (size > 1) in the FDB table.
|
|
|
|
* The default value is 15, and the range is between 1 and 1024.
|
|
|
|
The ``mlx5`` driver supports reloading via ``DEVLINK_CMD_RELOAD``
|
|
|
|
Info versions
|
|
=============
|
|
|
|
The ``mlx5`` driver reports the following versions
|
|
|
|
.. list-table:: devlink info versions implemented
|
|
:widths: 5 5 90
|
|
|
|
* - Name
|
|
- Type
|
|
- Description
|
|
* - ``fw.psid``
|
|
- fixed
|
|
- Used to represent the board id of the device.
|
|
* - ``fw.version``
|
|
- stored, running
|
|
- Three digit major.minor.subminor firmware version number.
|