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.. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
============
Devlink Info
============
The ``devlink-info`` mechanism enables device drivers to report device
information in a generic fashion. It is extensible, and enables exporting
even device or driver specific information.
devlink supports representing the following types of versions
.. list-table:: List of version types
:widths: 5 95
* - Type
- Description
* - ``fixed``
- Represents fixed versions, which cannot change. For example,
component identifiers or the board version reported in the PCI VPD.
* - ``running``
- Represents the version of the currently running component. For
example the running version of firmware. These versions generally
only update after a reboot.
* - ``stored``
- Represents the version of a component as stored, such as after a
flash update. Stored values should update to reflect changes in the
flash even if a reboot has not yet occurred.
Generic Versions
================
It is expected that drivers use the following generic names for exporting
version information. Other information may be exposed using driver-specific
names, but these should be documented in the driver-specific file.
board.id
--------
Unique identifier of the board design.
board.rev
---------
Board design revision.
asic.id
-------
ASIC design identifier.
asic.rev
--------
ASIC design revision.
board.manufacture
-----------------
An identifier of the company or the facility which produced the part.
fw
--
Overall firmware version, often representing the collection of
fw.mgmt, fw.app, etc.
fw.mgmt
-------
Control unit firmware version. This firmware is responsible for house
keeping tasks, PHY control etc. but not the packet-by-packet data path
operation.
fw.app
------
Data path microcode controlling high-speed packet processing.
fw.undi
-------
UNDI software, may include the UEFI driver, firmware or both.
fw.ncsi
-------
Version of the software responsible for supporting/handling the
Network Controller Sideband Interface.
fw.psid
-------
Unique identifier of the firmware parameter set.
fw.roce
-------
RoCE firmware version which is responsible for handling roce
management.
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