Merge: selftests/net: give more time to udpgro bg processes to complete startup

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/1643

selftests/net: give more time to udpgro bg processes to complete startup

Bugzilla: https://bugzilla.redhat.com/2143407

In some conditions, background processes in udpgro don't have enough
time to set up the sockets. When foreground processes start, this
results in the test failing with "./udpgso_bench_tx: sendmsg: Connection
refused". For instance, this happens from time to time on a Qualcomm
SA8540P SoC running CentOS Stream 9.

To fix this, increase the time given to background processes to
complete the startup before foreground processes start.

Signed-off-by: Adrien Thierry <athierry@redhat.com>

Approved-by: Eric Chanudet <echanude@redhat.com>
Approved-by: Hangbin Liu <haliu@redhat.com>
Approved-by: Brian Masney <bmasney@redhat.com>
Approved-by: Andrea Claudi <aclaudi@redhat.com>

Signed-off-by: Herton R. Krzesinski <herton@redhat.com>

Author: Herton R. Krzesinski

tools/testing/selftests/net/udpgro.sh

@@ -50,7 +50,7 @@ run_one() {
 		echo "failed" &
 
 	# Hack: let bg programs complete the startup
-	sleep 0.1
+	sleep 0.2
 	./udpgso_bench_tx ${tx_args}
 	ret=$?
 	wait $(jobs -p)
@@ -117,7 +117,7 @@ run_one_2sock() {
 		echo "failed" &
 
 	# Hack: let bg programs complete the startup
-	sleep 0.1
+	sleep 0.2
 	./udpgso_bench_tx ${tx_args} -p 12345
 	sleep 0.1
 	# first UDP GSO socket should be closed at this point

tools/testing/selftests/net/udpgro_bench.sh

@@ -39,7 +39,7 @@ run_one() {
 	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -t ${rx_args} -r &
 
 	# Hack: let bg programs complete the startup
-	sleep 0.1
+	sleep 0.2
 	./udpgso_bench_tx ${tx_args}
 }