This patch prints out TEST_COUNT for every tests in script
mptcp_sockopt.sh.

The output looks like:

 01 transfer ipv4                                                [ OK ]
 02 mark ipv4                                                    [ OK ]
 03 transfer ipv6                                                [ OK ]
 04 mark ipv6                                                    [ OK ]
 PASS: all packets had packet mark set
 05 sockopt v4                                                   [ OK ]
 06 sockopt v6                                                   [ OK ]
 PASS: SOL_MPTCP getsockopt has expected information
 07 TCP_INQ: -t tcp                                              [ OK ]
 PASS: TCP_INQ cmsg/ioctl -t tcp
 08 TCP_INQ: -6 -t tcp                                           [ OK ]
 PASS: TCP_INQ cmsg/ioctl -6 -t tcp
 09 TCP_INQ: -r tcp                                              [ OK ]
 PASS: TCP_INQ cmsg/ioctl -r tcp
 10 TCP_INQ: -6 -r tcp                                           [ OK ]

Having test counters helps to quickly identify issues when looking at a
long list of output logs and results.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
---
 .../testing/selftests/net/mptcp/mptcp_sockopt.sh  | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index d03f9f9daa39..2aff01813058 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -173,7 +173,8 @@ do_transfer()
 	wait $spid
 	local rets=$?
 
-	printf "%-25s %35s" "transfer ${ip}" " "
+	TEST_COUNT=$((TEST_COUNT+1))
+	printf "%02u %-25s %35s" "$TEST_COUNT" "transfer ${ip}" " "
 	if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
 		echo " client exit code $retc, server $rets" 1>&2
 		echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2
@@ -189,7 +190,8 @@ do_transfer()
 	fi
 	mptcp_lib_print_ok "[ OK ]"
 
-	printf "%-25s %35s" "mark ${ip}" " "
+	TEST_COUNT=$((TEST_COUNT+1))
+	printf "%02u %-25s %35s" "$TEST_COUNT" "mark ${ip}" " "
 	if [ $local_addr = "::" ];then
 		check_mark $listener_ns 6 || retc=1
 		check_mark $connector_ns 6 || retc=1
@@ -236,7 +238,8 @@ do_mptcp_sockopt_tests()
 	ip netns exec "$ns3" ./mptcp_sockopt
 	lret=$?
 
-	printf "%-25s %35s" "sockopt v4" " "
+	TEST_COUNT=$((TEST_COUNT+1))
+	printf "%02u %-25s %35s" "$TEST_COUNT" "sockopt v4" " "
 	if [ $lret -ne 0 ]; then
 		echo "FAIL: SOL_MPTCP getsockopt" 1>&2
 		mptcp_lib_result_fail "sockopt v4"
@@ -249,7 +252,8 @@ do_mptcp_sockopt_tests()
 	ip netns exec "$ns3" ./mptcp_sockopt -6
 	lret=$?
 
-	printf "%-25s %35s" "sockopt v6" " "
+	TEST_COUNT=$((TEST_COUNT+1))
+	printf "%02u %-25s %35s" "$TEST_COUNT" "sockopt v6" " "
 	if [ $lret -ne 0 ]; then
 		echo "FAIL: SOL_MPTCP getsockopt (ipv6)" 1>&2
 		mptcp_lib_result_fail "sockopt v6"
@@ -279,7 +283,8 @@ run_tests()
 
 do_tcpinq_test()
 {
-	printf "%-25s %35s" "TCP_INQ: $*" " "
+	TEST_COUNT=$((TEST_COUNT+1))
+	printf "%02u %-25s %35s" "$TEST_COUNT" "TCP_INQ: $*" " "
 	ip netns exec "$ns3" ./mptcp_inq "$@"
 	local lret=$?
 	if [ $lret -ne 0 ];then
-- 
2.35.3