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Ido Schimmel says: ==================== mlxsw: Add 'fw_load_policy' devlink parameter Shalom says: Currently, drivers do not have the ability to control the firmware loading policy and they always use their own fixed policy. This prevents drivers from running the device with a different firmware version for testing and/or debugging purposes. For example, testing a firmware bug fix. For these situations, the new devlink generic parameter, 'fw_load_policy', gives the ability to control this option and allows drivers to run with a different firmware version than required by the driver. Patch #1 adds the new parameter to devlink. The other two patches, #2 and #3, add support for this parameter in the mlxsw driver. Example: # Query the devlink parameters supported by the device $ devlink dev param show pci/0000:03:00.0: name fw_load_policy type generic values: cmode driverinit value driver # Flash new firmware using ethtool $ ethtool -f swp1 mellanox/mlxsw_spectrum-13.1703.4.mfa2 # Toggle parameter $ devlink dev param set pci/0000:03:00.0 name fw_load_policy value flash cmode driverinit # devlink reset $ devlink dev reload pci/0000:03:00.0 # Query firmware version to show changes took affect $ ethtool -i swp1 driver: mlxsw_spectrum version: 1.0 firmware-version: 13.1703.4 expansion-rom-version: bus-info: 0000:03:00.0 supports-statistics: yes supports-test: no supports-eeprom-access: no supports-register-dump: no supports-priv-flags: no iproute2 patches available here: https://github.com/tshalom/iproute2-next v2: * Change 'fw_version_check' to 'fw_load_policy' with values 'driver' and 'flash' (Jakub) ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.