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| author | Anatolii Gerasymenko <anatolii.gerasymenko@intel.com> | 2022-08-11 15:05:35 +0200 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2022-08-24 17:45:55 +0200 |
| commit | 26d1c571e16a4ca8c144f6627245eb8209f326c2 (patch) | |
| tree | 62667e125408935c0ac6a94395ebaf5e24018a73 /Documentation/networking/devlink | |
| parent | ice: Add additional flags to ice_nvm_write_activate (diff) | |
| download | linux-26d1c571e16a4ca8c144f6627245eb8209f326c2.tar.xz linux-26d1c571e16a4ca8c144f6627245eb8209f326c2.zip | |
ice: Implement devlink port split operations
Allow to configure port split options using the devlink port split
interface. Support port splitting only for port 0, as the FW has
a predefined set of available port split options for the whole device.
Add ice_devlink_port_options_print() function to print the table with
all available FW port split options. It will be printed after each port
split and unsplit command.
Add documentation for devlink port split interface usage for the ice
driver.
Co-developed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Anatolii Gerasymenko <anatolii.gerasymenko@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'Documentation/networking/devlink')
| -rw-r--r-- | Documentation/networking/devlink/ice.rst | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/networking/devlink/ice.rst b/Documentation/networking/devlink/ice.rst index 8c082b139bbd..0c89ceb8986d 100644 --- a/Documentation/networking/devlink/ice.rst +++ b/Documentation/networking/devlink/ice.rst @@ -139,6 +139,42 @@ EMP firmware image. The driver does not currently support reloading the driver via ``DEVLINK_RELOAD_ACTION_DRIVER_REINIT``. +Port split +========== + +The ``ice`` driver supports port splitting only for port 0, as the FW has +a predefined set of available port split options for the whole device. + +A system reboot is required for port split to be applied. + +The following command will select the port split option with 4 ports: + +.. code:: shell + + $ devlink port split pci/0000:16:00.0/0 count 4 + +The list of all available port options will be printed to dynamic debug after +each ``split`` and ``unsplit`` command. The first option is the default. + +.. code:: shell + + ice 0000:16:00.0: Available port split options and max port speeds (Gbps): + ice 0000:16:00.0: Status Split Quad 0 Quad 1 + ice 0000:16:00.0: count L0 L1 L2 L3 L4 L5 L6 L7 + ice 0000:16:00.0: Active 2 100 - - - 100 - - - + ice 0000:16:00.0: 2 50 - 50 - - - - - + ice 0000:16:00.0: Pending 4 25 25 25 25 - - - - + ice 0000:16:00.0: 4 25 25 - - 25 25 - - + ice 0000:16:00.0: 8 10 10 10 10 10 10 10 10 + ice 0000:16:00.0: 1 100 - - - - - - - + +There could be multiple FW port options with the same port split count. When +the same port split count request is issued again, the next FW port option with +the same port split count will be selected. + +``devlink port unsplit`` will select the option with a split count of 1. If +there is no FW option available with split count 1, you will receive an error. + Regions ======= |