[PATCH 5.15.y] selftests: mptcp: diag: return KSFT_FAIL not test_cnt

["Matthieu Baerts (NGI0)" <matttbe@kernel.org>]

From: Geliang Tang <tanggeliang@kylinos.cn>

The test counter 'test_cnt' should not be returned in diag.sh, e.g. what
if only the 4th test fail? Will do 'exit 4' which is 'exit ${KSFT_SKIP}',
the whole test will be marked as skipped instead of 'failed'!

So we should do ret=${KSFT_FAIL} instead.

Fixes: df62f2ec3df6 ("selftests/mptcp: add diag interface tests")
Cc: stable@vger.kernel.org
Fixes: 42fb6cddec3b ("selftests: mptcp: more stable diag tests")
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 45bcc0346561daa3f59e19a753cc7f3e08e8dff1)
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
Notes:
 - Conflicts in diag.sh because the commit ce9902573652 ("selftests:
   mptcp: diag: format subtests results in TAP") is not in v5.15 tree.
   These conflicts were in the context for an unrelated feature.
 - Compared to the conflicts seen with the same patch in the v6.1 tree,
   there was an extra one here in v5.15 because the commit f2ae0fa68e28
   ("selftests/mptcp: add diag listen tests") is no the in this tree: it
   moves the assignation of 'ret' in '__chk_nr()' under an extra check.
   The conflict was easy to fix, simply by changing the value of 'ret'
   from the previous location.
---
 tools/testing/selftests/net/mptcp/diag.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/diag.sh b/tools/testing/selftests/net/mptcp/diag.sh
index 57a681107f73..a8178a9c1e10 100755
--- a/tools/testing/selftests/net/mptcp/diag.sh
+++ b/tools/testing/selftests/net/mptcp/diag.sh
@@ -53,7 +53,7 @@ __chk_nr()
 	printf "%-50s" "$msg"
 	if [ $nr != $expected ]; then
 		echo "[ fail ] expected $expected found $nr"
-		ret=$test_cnt
+		ret=${KSFT_FAIL}
 	else
 		echo "[  ok  ]"
 	fi
@@ -88,10 +88,10 @@ wait_msk_nr()
 	printf "%-50s" "$msg"
 	if [ $i -ge $timeout ]; then
 		echo "[ fail ] timeout while expecting $expected max $max last $nr"
-		ret=$test_cnt
+		ret=${KSFT_FAIL}
 	elif [ $nr != $expected ]; then
 		echo "[ fail ] expected $expected found $nr"
-		ret=$test_cnt
+		ret=${KSFT_FAIL}
 	else
 		echo "[  ok  ]"
 	fi
-- 
2.43.0