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

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Message-ID: <20250115232129.845884-1-kuba@kernel.org>
Date: Wed, 15 Jan 2025 15:21:29 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	Jakub Kicinski <kuba@...nel.org>,
	shuah@...nel.org,
	willemb@...gle.com,
	matttbe@...nel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH net-next] selftests/net: packetdrill: make tcp buf limited timing tests benign

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@...nel.org>
---
CC: shuah@...nel.org
CC: willemb@...gle.com
CC: matttbe@...nel.org
CC: linux-kselftest@...r.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