linux-kernel - [PATCH 4/6] selftests: forwarding: tc_flower_cfm: skip tests if tools or feats are missing

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Message-ID: <20260120230208.328337-5-aleksey.oladko@virtuozzo.com>
Date: Tue, 20 Jan 2026 23:02:06 +0000
From: Aleksei Oladko <aleksey.oladko@...tuozzo.com>
To: "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>,
        Shuah Khan <shuah@...nel.org>, Petr Machata <petrm@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>
Cc: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Aleksei Oladko <aleksey.oladko@...tuozzo.com>
Subject: [PATCH 4/6] selftests: forwarding: tc_flower_cfm: skip tests if tools or feats are missing

The tc_flower_cfm.sh selftest assume the presence of iproute2
support for the `cfm` keyword in `tc filter` commands. These
assumptions can cause test failures.

This patch improves test robustness by skipping the test if
tc filter help does not mention CFM

Signed-off-by: Aleksei Oladko <aleksey.oladko@...tuozzo.com>
---
 tools/testing/selftests/net/forwarding/tc_flower_cfm.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/net/forwarding/tc_flower_cfm.sh b/tools/testing/selftests/net/forwarding/tc_flower_cfm.sh
index 3ca20df952eb..65f95fe88b38 100755
--- a/tools/testing/selftests/net/forwarding/tc_flower_cfm.sh
+++ b/tools/testing/selftests/net/forwarding/tc_flower_cfm.sh
@@ -196,6 +196,8 @@ cleanup()
 	vrf_cleanup
 }
 
+run_cmd_grep 'CFM' tc filter add dev lo ingress flower help || exit $ksft_skip
+
 trap cleanup EXIT
 
 setup_prepare
-- 
2.43.0