[PATCH net-next] selftests/net: packetdrill: make tcp buf limited timing tests benign

Jakub Kicinski
2025-01-15T23:21:35Z

The following tests are failing on debug kernels:

tcp_tcp_info_tcp-info-rwnd-limited.pkt
tcp_tcp_info_tcp-info-sndbuf-limited.pkt

with reports like:

assert 19000 <= tcpi_sndbuf_limited <= 21000, tcpi_sndbuf_limited; \
AssertionError: 18000

and:

assert 348000 <= tcpi_busy_time <= 360000, tcpi_busy_time
AssertionError: 362000

Extend commit 912d6f669725 ("selftests/net: packetdrill: report benign
debug flakes as xfail") to cover them.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: shuah@kernel.org
CC: willemb@google.com
CC: matttbe@kernel.org
CC: linux-kselftest@vger.kernel.org
---
tools/testing/selftests/net/packetdrill/ksft_runner.sh | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/net/packetdrill/ksft_runner.sh b/tools/testing/selftests/net/packetdrill/ksft_runner.sh
index ff989c325eef..e15c43b7359b 100755
--- a/tools/testing/selftests/net/packetdrill/ksft_runner.sh
+++ b/tools/testing/selftests/net/packetdrill/ksft_runner.sh
@@ -43,6 +43,7 @@ if [[ -n "${KSFT_MACHINE_SLOW}" ]]; then
"tcp_timestamping.*.pkt"
"tcp_user_timeout_user-timeout-probe.pkt"
"tcp_zerocopy_epoll_.*.pkt"
+ "tcp_tcp_info_tcp-info-*-limited.pkt"
)
readonly xfail_regex="^($(printf '%s|' "${xfail_list[@]}"))$"
[[ "$script" =~ ${xfail_regex} ]] && failfunc=ktap_test_xfail
--
2.48.0