1.. SPDX-License-Identifier: GPL-2.0
2
3====================
4mlx5 devlink support
5====================
6
7This document describes the devlink features implemented by the ``mlx5``
8device driver.
9
10Parameters
11==========
12
13.. list-table:: Generic parameters implemented
14
15   * - Name
16     - Mode
17     - Validation
18   * - ``enable_roce``
19     - driverinit
20   * - ``io_eq_size``
21     - driverinit
22     - The range is between 64 and 4096.
23   * - ``event_eq_size``
24     - driverinit
25     - The range is between 64 and 4096.
26
27The ``mlx5`` driver also implements the following driver-specific
28parameters.
29
30.. list-table:: Driver-specific parameters implemented
31   :widths: 5 5 5 85
32
33   * - Name
34     - Type
35     - Mode
36     - Description
37   * - ``flow_steering_mode``
38     - string
39     - runtime
40     - Controls the flow steering mode of the driver
41
42       * ``dmfs`` Device managed flow steering. In DMFS mode, the HW
43         steering entities are created and managed through firmware.
44       * ``smfs`` Software managed flow steering. In SMFS mode, the HW
45         steering entities are created and manage through the driver without
46         firmware intervention.
47   * - ``fdb_large_groups``
48     - u32
49     - driverinit
50     - Control the number of large groups (size > 1) in the FDB table.
51
52       * The default value is 15, and the range is between 1 and 1024.
53
54The ``mlx5`` driver supports reloading via ``DEVLINK_CMD_RELOAD``
55
56Info versions
57=============
58
59The ``mlx5`` driver reports the following versions
60
61.. list-table:: devlink info versions implemented
62   :widths: 5 5 90
63
64   * - Name
65     - Type
66     - Description
67   * - ``fw.psid``
68     - fixed
69     - Used to represent the board id of the device.
70   * - ``fw.version``
71     - stored, running
72     - Three digit major.minor.subminor firmware version number.
73