netdev - [PATCH net 03/17] selftests: mptcp: join: helpers to skip tests

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Date: Sat, 10 Jun 2023 18:11:38 +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 03/17] selftests: mptcp: join: helpers to skip tests

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

Here are some helpers that will be used to mark subtests as skipped if a
feature is not supported. Marking as a fix for the commit introducing
this selftest to help with the backports.

While at it, also check if kallsyms feature is available as it will also
be used in the following commits to check if MPTCP features are
available before starting a test.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: b08fbf241064 ("selftests: add test-cases for MPTCP MP_JOIN")
Cc: stable@...r.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@...sares.net>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 27 +++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 74cc8a74a9d6..a63aed145393 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -142,6 +142,7 @@ cleanup_partial()
 check_tools()
 {
 	mptcp_lib_check_mptcp
+	mptcp_lib_check_kallsyms

 	if ! ip -Version &> /dev/null; then
 		echo "SKIP: Could not run test without ip tool"
@@ -191,6 +192,32 @@ cleanup()
 	cleanup_partial
 }

+# $1: msg
+print_title()
+{
+	printf "%03u %-36s %s" "${TEST_COUNT}" "${TEST_NAME}" "${1}"
+}
+
+# [ $1: fail msg ]
+mark_as_skipped()
+{
+	local msg="${1:-"Feature not supported"}"
+
+	mptcp_lib_fail_if_expected_feature "${msg}"
+
+	print_title "[ skip ] ${msg}"
+	printf "\n"
+}
+
+# $@: condition
+continue_if()
+{
+	if ! "${@}"; then
+		mark_as_skipped
+		return 1
+	fi
+}
+
 skip_test()
 {
 	if [ "${#only_tests_ids[@]}" -eq 0 ] && [ "${#only_tests_names[@]}" -eq 0 ]; then

-- 
2.40.1