Extract the main part of check_expected() in userspace_pm.sh to a new
function mptcp_lib_check_expected() in mptcp_lib.sh. It will be used
in both mptcp_john.sh and userspace_pm.sh.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
---
 .../testing/selftests/net/mptcp/mptcp_lib.sh  | 42 +++++++++++++++++++
 .../selftests/net/mptcp/userspace_pm.sh       | 41 +++---------------
 2 files changed, 47 insertions(+), 36 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
index 7a68791c5773..19e6ceb2b4b0 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
@@ -387,3 +387,45 @@ mptcp_lib_evts_remove() {
 
 	rm -rf "${server_evts}" "${client_evts}"
 }
+
+# $1: var name ; $2: prev ret
+mptcp_lib_check_expected_one()
+{
+	local var="${1}"
+	local exp="e_${var}"
+	local prev_ret="${2}"
+
+	if [ "${!var}" = "${!exp}" ]
+	then
+		return 0
+	fi
+
+	if [ "${prev_ret}" = "0" ]
+	then
+		ret=1
+	fi
+
+	printf "\tExpected value for '%s': '%s', got '%s'.\n" \
+		"${var}" "${!exp}" "${!var}"
+	return 1
+}
+
+# $@: all var names to check
+mptcp_lib_check_expected()
+{
+	local rc=0
+	local var
+
+	for var in "${@}"
+	do
+		mptcp_lib_check_expected_one "${var}" "${rc}" || rc=1
+	done
+
+	if [ ${rc} -eq 0 ]
+	then
+		mptcp_lib_print_ok "[ ok ]"
+		return 0
+	fi
+
+	return 1
+}
diff --git a/tools/testing/selftests/net/mptcp/userspace_pm.sh b/tools/testing/selftests/net/mptcp/userspace_pm.sh
index 7f4aaca032dd..cc6e8120ed10 100755
--- a/tools/testing/selftests/net/mptcp/userspace_pm.sh
+++ b/tools/testing/selftests/net/mptcp/userspace_pm.sh
@@ -233,46 +233,15 @@ make_connection()
 	fi
 }
 
-# $1: var name ; $2: prev ret
-check_expected_one()
-{
-	local var="${1}"
-	local exp="e_${var}"
-	local prev_ret="${2}"
-
-	if [ "${!var}" = "${!exp}" ]
-	then
-		return 0
-	fi
-
-	if [ "${prev_ret}" = "0" ]
-	then
-		test_fail
-	fi
-
-	_printf "\tExpected value for '%s': '%s', got '%s'.\n" \
-		"${var}" "${!exp}" "${!var}"
-	return 1
-}
-
 # $@: all var names to check
 check_expected()
 {
-	local rc=0
-	local var
-
-	for var in "${@}"
-	do
-		check_expected_one "${var}" "${rc}" || rc=1
-	done
-
-	if [ ${rc} -eq 0 ]
-	then
-		test_pass
-		return 0
+	mptcp_lib_check_expected ${*}
+	if [ $? -eq 0 ]; then
+		mptcp_lib_result_pass "${TEST_NAME}"
+	else
+		test_fail
 	fi
-
-	return 1
 }
 
 verify_announce_event()
-- 
2.35.3