kernel.git/tools/testing/selftests/net/lib/py/ksft.py, branch master

selftests: net: py: teach ksft_pr() multi-line safety

2026-01-14T01:54:00Z

Make printing multi-line logs easier by automatically prefixing each line in ksft_pr(). Make use of this when formatting exceptions. Reviewed-by: Petr Machata Link: https://patch.msgid.link/20260113000740.255360-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: ensure defer() is only used within a test case

2026-01-10T23:11:59Z

I wasted a couple of hours recently after accidentally adding a defer() from within a function which itself was called as part of defer(). This leads to an infinite loop of defer(). Make sure this cannot happen and raise a helpful exception. I understand that the pair of _ksft_defer_arm() calls may not be the most Pythonic way to implement this, but it's easy enough to understand. Reviewed-by: Petr Machata Link: https://patch.msgid.link/20260108225257.2684238-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: capitalize defer queue and improve import

2026-01-10T23:11:59Z

Import utils and refer to the global defer queue that way instead of importing the queue. This will make it possible to assign value to the global variable. While at it capitalize the name, to comply with the Python coding style. Reviewed-by: Petr Machata Link: https://patch.msgid.link/20260108225257.2684238-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: handle interrupt during cleanup

2025-12-01T20:01:29Z

Following up on the old discussion [1]. Let the BaseExceptions out of defer()'ed cleanup. And handle it in the main loop. This allows us to exit the tests if user hit Ctrl-C during defer(). Link: https://lore.kernel.org/20251119063228.3adfd743@kernel.org # [1] Reviewed-by: Simon Horman Reviewed-by: Petr Machata Link: https://patch.msgid.link/20251128004846.2602687-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: add test variants

2025-11-21T02:19:29Z

There's a lot of cases where we try to re-run the same code with different parameters. We currently need to either use a generator method or create a "main" case implementation which then gets called by trivial case functions: def _test(x, y, z): ... def case_int(): _test(1, 2, 3) def case_str(): _test('a', 'b', 'c') Add support for variants, similar to kselftests_harness.h and a lot of other frameworks. Variants can be added as decorator to test functions: @ksft_variants([(1, 2, 3), ('a', 'b', 'c')]) def case(x, y, z): ... ksft_run() will auto-generate case names: case.1_2_3 case.a_b_c Because the names may not always be pretty (and to avoid forcing classes to implement case-friendly __str__()) add a wrapper class KsftNamedVariant which lets the user specify the name for the variant. Note that ksft_run's args are still supported. ksft_run splices args and variant params together. Reviewed-by: Willem de Bruijn Reviewed-by: Petr Machata Link: https://patch.msgid.link/20251120021024.2944527-4-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: extract the case generation logic

2025-11-21T02:19:29Z

In preparation for adding test variants move the test case collection logic to a dedicated function. New helper returns (function, args, name, ) tuples. The main test loop can simply run them, not much logic or discernment needed. Reviewed-by: Petr Machata Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20251120021024.2944527-3-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: py: coding style improvements

2025-11-21T02:19:28Z

We're about to add more features here and finding new issues with old ones in place is hard. Address ruff checks: - bare exceptions - f-string with no params - unused import We need to use BaseException when handling defer(), as Petr points out. This retains the old behavior of ignoring SIGTERM while running cleanups. Reviewed-by: Willem de Bruijn Reviewed-by: Petr Machata Link: https://patch.msgid.link/20251120021024.2944527-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: psp: add tests for destroying devices

2025-09-30T13:17:22Z

Add tests for making sure device can disappear while associations exist. This is netdevsim-only since destroying real devices is more tricky. Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Zahka Link: https://patch.msgid.link/20250927225420.1443468-9-kuba@kernel.org Reviewed-by: Willem de Bruijn Signed-off-by: Paolo Abeni

selftests: drv-net: psp: add association tests

2025-09-30T13:17:22Z

Add tests for exercising PSP associations for TCP sockets. Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Zahka Link: https://patch.msgid.link/20250927225420.1443468-6-kuba@kernel.org Reviewed-by: Willem de Bruijn Signed-off-by: Paolo Abeni

selftests: net: prevent Python from buffering the output

2025-07-17T23:27:38Z

Make sure Python doesn't buffer the output, otherwise for some tests we may see false positive timeouts in NIPA. NIPA thinks that a machine has hung if the test doesn't print anything for 3min. This is also nice to heave for running the tests manually, especially in vng. Reviewed-by: Petr Machata Link: https://patch.msgid.link/20250716205712.1787325-1-kuba@kernel.org Signed-off-by: Jakub Kicinski