This patch prints out TEST_COUNT for every tests in script
mptcp_connect.sh. The output looks like:

 01 New MPTCP socket can be blocked via sysctl                        [ OK ]
 INFO: validating network environment with pings
 02 INFO: Using loss of 0.90% delay 30 ms on ns3eth4
 03 ns1 MPTCP -> ns1 (10.0.1.1:10000      ) MPTCP  (duration   116ms) [ OK ]
 04 ns1 MPTCP -> ns1 (10.0.1.1:10001      ) TCP    (duration    33ms) [ OK ]
 05 ns1 TCP   -> ns1 (10.0.1.1:10002      ) MPTCP  (duration    25ms) [ OK ]
 06 ns1 MPTCP -> ns1 (dead:beef:1::1:10003) MPTCP  (duration   128ms) [ OK ]
 07 ns1 MPTCP -> ns1 (dead:beef:1::1:10004) TCP    (duration    31ms) [ 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>
---
 .../selftests/net/mptcp/mptcp_connect.sh      | 21 ++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
index 0a6d40c3aa85..7442bb2a8562 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -267,7 +267,8 @@ check_mptcp_disabled()
 		return 1
 	fi
 
-	echo -n -e "New MPTCP socket can be blocked via sysctl\t\t"
+	TEST_COUNT=$((TEST_COUNT+1))
+	echo -n -e "0${TEST_COUNT} New MPTCP socket can be blocked via sysctl\t\t"
 	mptcp_lib_print_ok "\t           [ OK ]"
 	mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl"
 	return 0
@@ -337,7 +338,8 @@ do_transfer()
 	local addr_port
 	addr_port=$(printf "%s:%d" ${connect_addr} ${port})
 	local result_msg
-	result_msg="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})"
+	result_msg="$(printf "%02u %.3s %-5s -> %.3s (%-20s) %-5s" \
+		${TEST_COUNT} ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})"
 	printf "%s\t" "${result_msg}"
 
 	if $capture; then
@@ -641,7 +643,8 @@ run_test_transparent()
 	# following function has been exported (T). Not great but better than
 	# checking for a specific kernel version.
 	if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then
-		echo "INFO: ${msg} not supported by the kernel: SKIP"
+		TEST_COUNT=$((TEST_COUNT+1))
+		echo "${TEST_COUNT} INFO: ${msg} not supported by the kernel: SKIP"
 		mptcp_lib_result_skip "${TEST_GROUP}"
 		return
 	fi
@@ -658,7 +661,8 @@ table inet mangle {
 }
 EOF
 	if [ $? -ne 0 ]; then
-		echo "SKIP: $msg, could not load nft ruleset"
+		TEST_COUNT=$((TEST_COUNT+1))
+		echo "${TEST_COUNT} SKIP: $msg, could not load nft ruleset"
 		mptcp_lib_fail_if_expected_feature "nft rules"
 		mptcp_lib_result_skip "${TEST_GROUP}"
 		return
@@ -675,7 +679,8 @@ EOF
 	ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100
 	if [ $? -ne 0 ]; then
 		ip netns exec "$listener_ns" nft flush ruleset
-		echo "SKIP: $msg, ip $r6flag rule failed"
+		TEST_COUNT=$((TEST_COUNT+1))
+		echo "${TEST_COUNT} SKIP: $msg, ip $r6flag rule failed"
 		mptcp_lib_fail_if_expected_feature "ip rule"
 		mptcp_lib_result_skip "${TEST_GROUP}"
 		return
@@ -685,7 +690,8 @@ EOF
 	if [ $? -ne 0 ]; then
 		ip netns exec "$listener_ns" nft flush ruleset
 		ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100
-		echo "SKIP: $msg, ip route add local $local_addr failed"
+		TEST_COUNT=$((TEST_COUNT+1))
+		echo "${TEST_COUNT} SKIP: $msg, ip route add local $local_addr failed"
 		mptcp_lib_fail_if_expected_feature "ip route"
 		mptcp_lib_result_skip "${TEST_GROUP}"
 		return
@@ -842,7 +848,8 @@ mptcp_lib_result_code "${ret}" "ping tests"
 stop_if_error "Could not even run ping tests"
 
 [ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms
-echo -n "INFO: Using loss of $tc_loss "
+TEST_COUNT=$((TEST_COUNT+1))
+echo -n "0${TEST_COUNT} INFO: Using loss of $tc_loss "
 test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms "
 
 reorder_delay=$(($tc_delay / 4))
-- 
2.35.3