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| author | Kuba Pawlak <kuba.pawlak@canonical.com> | 2026-09-04 16:03:34 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-09-09 13:49:05 -0700 |
| commit | 5bb36cd12006500fe6b96c17c2fbe870ae89eb96 (patch) | |
| tree | 884b0c376318b605817c3d5f034c253b0cf5079b | |
| parent | 1c9c07d0ad69deaec73ca755ba5f3815fa493bf8 (diff) | |
| download | linux-next-5bb36cd12006500fe6b96c17c2fbe870ae89eb96.tar.gz linux-next-5bb36cd12006500fe6b96c17c2fbe870ae89eb96.zip | |
selftests: net: Skip so_incoming_cpu on single-CPU systems
The test requires at least two CPUs to exercise the distribution of
connections between per-CPU listeners. It currently enforces this
prerequisite with an assertion, causing all test cases to fail on
single-vCPU systems even though no kernel functionality was tested.
Report the unsupported environment as a skip instead. Check the
prerequisite before setting up the network namespace so skipped tests do
not make unnecessary system changes.
Link: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2023546
Signed-off-by: Kuba Pawlak <kuba.pawlak@canonical.com>
Link: https://patch.msgid.link/20260904140334.562593-1-kuba.pawlak@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | tools/testing/selftests/net/so_incoming_cpu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/testing/selftests/net/so_incoming_cpu.c b/tools/testing/selftests/net/so_incoming_cpu.c index 4740701f1a9a..1b73442386ae 100644 --- a/tools/testing/selftests/net/so_incoming_cpu.c +++ b/tools/testing/selftests/net/so_incoming_cpu.c @@ -81,10 +81,11 @@ static int nr_client_per_server, nr_server, nr_client; FIXTURE_SETUP(so_incoming_cpu) { - setup_netns(_metadata); - nr_server = get_nprocs(); - ASSERT_LE(2, nr_server); + if (nr_server < 2) + SKIP(return, "requires at least two CPUs"); + + setup_netns(_metadata); if (NR_CLIENT_PER_SERVER_DEFAULT * nr_server < NR_PORT) nr_client_per_server = NR_CLIENT_PER_SERVER_DEFAULT; |