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.. SPDX-License-Identifier: GPL-2.0
====================
i40e devlink support
====================
This document describes the devlink features implemented by the ``i40e``
device driver.
Parameters
==========
.. list-table:: Generic parameters implemented
:widths: 5 5 90
* - Name
- Mode
- Notes
* - ``max_mac_per_vf``
- runtime
- Controls the maximum number of MAC addresses a VF can use
on i40e devices.
By default (``0``), the driver enforces its internally calculated per-VF
MAC filter limit, which is based on the number of allocated VFS.
If set to a non-zero value, this parameter acts as a strict cap:
the driver will use the user-provided value instead of its internal
calculation.
**Important notes:**
- This value **must be set before enabling SR-IOV**.
Attempting to change it while SR-IOV is enabled will return an error.
- MAC filters are a **shared hardware resource** across all VFs.
Setting a high value may cause other VFs to be starved of filters.
- This value is a **Administrative policy**. The hardware may return
errors when its absolute limit is reached, regardless of the value
set here.
The default value is ``0`` (internal calculation is used).
Info versions
=============
The ``i40e`` driver reports the following versions
.. list-table:: devlink info versions implemented
:widths: 5 5 5 90
* - Name
- Type
- Example
- Description
* - ``board.id``
- fixed
- K15190-000
- The Product Board Assembly (PBA) identifier of the board.
* - ``fw.mgmt``
- running
- 9.130
- 2-digit version number of the management firmware that controls the
PHY, link, etc.
* - ``fw.mgmt.api``
- running
- 1.15
- 2-digit version number of the API exported over the AdminQ by the
management firmware. Used by the driver to identify what commands
are supported.
* - ``fw.mgmt.build``
- running
- 73618
- Build number of the source for the management firmware.
* - ``fw.undi``
- running
- 1.3429.0
- Version of the Option ROM containing the UEFI driver. The version is
reported in ``major.minor.patch`` format. The major version is
incremented whenever a major breaking change occurs, or when the
minor version would overflow. The minor version is incremented for
non-breaking changes and reset to 1 when the major version is
incremented. The patch version is normally 0 but is incremented when
a fix is delivered as a patch against an older base Option ROM.
* - ``fw.psid.api``
- running
- 9.30
- Version defining the format of the flash contents.
* - ``fw.bundle_id``
- running
- 0x8000e5f3
- Unique identifier of the firmware image file that was loaded onto
the device. Also referred to as the EETRACK identifier of the NVM.
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