linux-kernel - [PATCH net 15/17] selftests: mptcp: join: skip PM listener tests if not supported

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Date:   Sat, 10 Jun 2023 18:11:50 +0200
From:   Matthieu Baerts <matthieu.baerts@...sares.net>
To:     mptcp@...ts.linux.dev, Mat Martineau <martineau@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>,
        Florian Westphal <fw@...len.de>,
        Davide Caratti <dcaratti@...hat.com>,
        Christoph Paasch <cpaasch@...le.com>,
        Geliang Tang <geliangtang@...il.com>,
        Geliang Tang <geliang.tang@...e.com>
Cc:     netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        Matthieu Baerts <matthieu.baerts@...sares.net>,
        stable@...r.kernel.org
Subject: [PATCH net 15/17] selftests: mptcp: join: skip PM listener tests
 if not supported

Selftests are supposed to run on any kernels, including the old ones not
supporting all MPTCP features.

One of them is the support of PM listener events introduced by commit
f8c9dfbd875b ("mptcp: add pm listener events").

It is possible to look for "mptcp_event_pm_listener" in kallsyms to know
in advance if the kernel supports this feature.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: 178d023208eb ("selftests: mptcp: listener test for in-kernel PM")
Cc: stable@...r.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@...sares.net>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 554fcafd6e8a..0c22efeba675 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -2774,6 +2774,11 @@ verify_listener_events()
 			$e_saddr $e_sport
 	fi
 
+	if ! mptcp_lib_kallsyms_has "mptcp_event_pm_listener$"; then
+		printf "[skip]: event not supported\n"
+		return
+	fi
+
 	type=$(grep "type:$e_type," $evt |
 	       sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q')
 	family=$(grep "type:$e_type," $evt |

-- 
2.40.1