netdev - [PATCH net 03/14] selftests: mptcp: connect: skip disconnect tests if not supported

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Message-Id: <20230608-upstream-net-20230608-mptcp-selftests-support-old-kernels-part-2-v1-3-20997a6fd841@tessares.net>
Date: Thu, 08 Jun 2023 18:38:45 +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>, Davide Caratti <dcaratti@...hat.com>, 
 Dmytro Shytyi <dmytro@...tyi.net>, Menglong Dong <imagedong@...cent.com>, 
 Geliang Tang <geliang.tang@...e.com>, 
 Kishen Maloor <kishen.maloor@...el.com>
Cc: Florian Westphal <fw@...len.de>, netdev@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Matthieu Baerts <matthieu.baerts@...sares.net>, stable@...r.kernel.org
Subject: [PATCH net 03/14] selftests: mptcp: connect: skip disconnect 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 full support of disconnections from the userspace
introduced by commit b29fcfb54cd7 ("mptcp: full disconnect
implementation").

It is possible to look for "mptcp_pm_data_reset" in kallsyms because a
preparation patch added it to ease the introduction of the mentioned
feature.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: 05be5e273c84 ("selftests: mptcp: add disconnect tests")
Cc: stable@...r.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@...sares.net>
---
 tools/testing/selftests/net/mptcp/mptcp_connect.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
index f9c36c6929cc..895114fb6832 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -797,6 +797,11 @@ run_tests_disconnect()
 	local old_cin=$cin
 	local old_sin=$sin

+	if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then
+		echo "INFO: Full disconnect not supported: SKIP"
+		return
+	fi
+
 	cat $cin $cin $cin > "$cin".disconnect

 	# force do_transfer to cope with the multiple tranmissions

-- 
2.40.1