selftests/net: packetdrill: report benign debug flakes as xfail

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A few recently added packetdrill tests that are known time sensitive
(e.g., because testing timestamping) occasionally fail in debug mode:
https://netdev.bots.linux.dev/contest.html?executor=vmksft-packetdrill-dbg

These failures are well understood. Correctness of the tests is
verified in non-debug mode. Continue running in debug mode also, to
keep coverage with debug instrumentation.

But, only in debug mode, mark these tests with well understood
timing issues as XFAIL (known failing) rather than FAIL when failing.

Introduce an allow list xfail_list with known cases.

Expand the ktap infrastructure with XFAIL support.

Fixes: eab35989cc ("selftests/net: packetdrill: import tcp/fast_recovery, tcp/nagle, tcp/timestamping")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Closes: https://lore.kernel.org/netdev/20241218100013.0c698629@kernel.org/
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250103113142.129251-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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This commit is contained in:

Willem de Bruijn 2025-01-03 06:31:14 -05:00 • committed by Paolo Abeni

parent 51cfbed198

commit 912d6f6697

2 changed files with 31 additions and 7 deletions

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15

tools/testing/selftests/kselftest/ktap_helpers.sh

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tools/testing/selftests/net/packetdrill/ksft_runner.sh

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