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authorVikas Gupta <vikas.gupta@broadcom.com>2022-07-27 22:27:20 +0530
committerJakub Kicinski <kuba@kernel.org>2022-07-28 21:56:53 -0700
commit08f588fa301bef264576fc915da6bf31b585a824 (patch)
tree50d145246f44d78fb22ac7816834bd4c867e4e51 /Documentation/networking
parentMerge branch 'mlx5e-use-tls-tx-pool-to-improve-connection-rate' (diff)
downloadlinux-dev-08f588fa301bef264576fc915da6bf31b585a824.tar.xz
linux-dev-08f588fa301bef264576fc915da6bf31b585a824.zip
devlink: introduce framework for selftests
Add a framework for running selftests. Framework exposes devlink commands and test suite(s) to the user to execute and query the supported tests by the driver. Below are new entries in devlink_nl_ops devlink_nl_cmd_selftests_show_doit/dumpit: To query the supported selftests by the drivers. devlink_nl_cmd_selftests_run: To execute selftests. Users can provide a test mask for executing group tests or standalone tests. Documentation/networking/devlink/ path is already part of MAINTAINERS & the new files come under this path. Hence no update needed to the MAINTAINERS Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com> Reviewed-by: Andy Gospodarek <gospo@broadcom.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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+.. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+=================
+Devlink Selftests
+=================
+
+The ``devlink-selftests`` API allows executing selftests on the device.
+
+Tests Mask
+==========
+The ``devlink-selftests`` command should be run with a mask indicating
+the tests to be executed.
+
+Tests Description
+=================
+The following is a list of tests that drivers may execute.
+
+.. list-table:: List of tests
+ :widths: 5 90
+
+ * - Name
+ - Description
+ * - ``DEVLINK_SELFTEST_FLASH``
+ - Devices may have the firmware on non-volatile memory on the board, e.g.
+ flash. This particular test helps to run a flash selftest on the device.
+ Implementation of the test is left to the driver/firmware.
+
+example usage
+-------------
+
+.. code:: shell
+
+ # Query selftests supported on the devlink device
+ $ devlink dev selftests show DEV
+ # Query selftests supported on all devlink devices
+ $ devlink dev selftests show
+ # Executes selftests on the device
+ $ devlink dev selftests run DEV id flash