When we send a packet through UDP without other side having open port, it usually replies with ICMP message. netcat upon getting that error fails with: "Ncat: Connection refused.". However, there is a race because this message might arrive after the netcat client is already done, so it will exit without any error.
To prevent that error ignore the return code, stdout and stderr for those calls. It is fine to ignore because all those changed instances are checking packet count after the calls so if the netcat fails for other reasons it will be detected by the packet count check. Signed-off-by: Ales Musil <[email protected]> --- tests/system-ovn.at | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/tests/system-ovn.at b/tests/system-ovn.at index bcd829c8b..939c2c3dc 100644 --- a/tests/system-ovn.at +++ b/tests/system-ovn.at @@ -4850,9 +4850,9 @@ NS_CHECK_EXEC([lsp], [tcpdump -l -nn -c 3 -i lsp ${filter} > lsp.pcap 2>tcpdump_ OVS_WAIT_UNTIL([grep "listening" tcpdump_err]) # Generate IPv4 UDP hairpin traffic. -NS_CHECK_EXEC([lsp], [echo a | nc -u 88.88.88.88 4040 &], [0]) -NS_CHECK_EXEC([lsp], [echo a | nc -u 88.88.88.89 4040 &], [0]) -NS_CHECK_EXEC([lsp], [echo a | nc -u 88.88.88.90 2021 &], [0]) +NS_CHECK_EXEC([lsp], [echo a | nc -u 88.88.88.88 4040], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([lsp], [echo a | nc -u 88.88.88.89 4040], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([lsp], [echo a | nc -u 88.88.88.90 2021], [ignore], [ignore], [ignore]) # Check hairpin traffic. OVS_WAIT_UNTIL([ @@ -4949,9 +4949,9 @@ NS_CHECK_EXEC([lsp], [tcpdump -l -nn -c 3 -i lsp $filter > lsp.pcap 2>tcpdump_er OVS_WAIT_UNTIL([grep "listening" tcpdump_err]) # Generate IPv6 UDP hairpin traffic. -NS_CHECK_EXEC([lsp], [echo a | nc -u 8800::0088 4040 &], [0]) -NS_CHECK_EXEC([lsp], [echo a | nc -u 8800::0089 4040 &], [0]) -NS_CHECK_EXEC([lsp], [echo a | nc -u 8800::0090 2021 &], [0]) +NS_CHECK_EXEC([lsp], [echo a | nc -u 8800::0088 4040], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([lsp], [echo a | nc -u 8800::0089 4040], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([lsp], [echo a | nc -u 8800::0090 2021], [ignore], [ignore], [ignore]) # Check hairpin traffic. OVS_WAIT_UNTIL([ @@ -9132,17 +9132,17 @@ NS_CHECK_EXEC([vm1], [nc 66.66.66.66 666 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm2], [nc 66.66.66.66 666 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm3], [nc 66.66.66.66 666 -z], [0], [ignore], [ignore]) -NS_CHECK_EXEC([vm1], [echo a | nc -u 66.66.66.66 777 &], [0]) -NS_CHECK_EXEC([vm2], [echo a | nc -u 66.66.66.66 777 &], [0]) -NS_CHECK_EXEC([vm3], [echo a | nc -u 66.66.66.66 777 &], [0]) +NS_CHECK_EXEC([vm1], [echo a | nc -u 66.66.66.66 777], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm2], [echo a | nc -u 66.66.66.66 777], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm3], [echo a | nc -u 66.66.66.66 777], [ignore], [ignore], [ignore]) NS_CHECK_EXEC([vm1], [nc 66.66.66.66 888 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm2], [nc 66.66.66.66 888 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm3], [nc 66.66.66.66 888 -z], [0], [ignore], [ignore]) -NS_CHECK_EXEC([vm1], [echo a | nc -u 66.66.66.66 999 &], [0]) -NS_CHECK_EXEC([vm2], [echo a | nc -u 66.66.66.66 999 &], [0]) -NS_CHECK_EXEC([vm3], [echo a | nc -u 66.66.66.66 999 &], [0]) +NS_CHECK_EXEC([vm1], [echo a | nc -u 66.66.66.66 999], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm2], [echo a | nc -u 66.66.66.66 999], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm3], [echo a | nc -u 66.66.66.66 999], [ignore], [ignore], [ignore]) OVS_WAIT_UNTIL([ requests=`grep "UDP" -c vm1.pcap` @@ -9271,17 +9271,17 @@ NS_CHECK_EXEC([vm1], [nc 6666::1 666 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm2], [nc 6666::1 666 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm3], [nc 6666::1 666 -z], [0], [ignore], [ignore]) -NS_CHECK_EXEC([vm1], [echo a | nc -u 6666::1 777 &], [0]) -NS_CHECK_EXEC([vm2], [echo a | nc -u 6666::1 777 &], [0]) -NS_CHECK_EXEC([vm3], [echo a | nc -u 6666::1 777 &], [0]) +NS_CHECK_EXEC([vm1], [echo a | nc -u 6666::1 777], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm2], [echo a | nc -u 6666::1 777], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm3], [echo a | nc -u 6666::1 777], [ignore], [ignore], [ignore]) NS_CHECK_EXEC([vm1], [nc 6666::1 888 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm2], [nc 6666::1 888 -z], [0], [ignore], [ignore]) NS_CHECK_EXEC([vm3], [nc 6666::1 888 -z], [0], [ignore], [ignore]) -NS_CHECK_EXEC([vm1], [echo a | nc -u 6666::1 999 &], [0]) -NS_CHECK_EXEC([vm2], [echo a | nc -u 6666::1 999 &], [0]) -NS_CHECK_EXEC([vm3], [echo a | nc -u 6666::1 999 &], [0]) +NS_CHECK_EXEC([vm1], [echo a | nc -u 6666::1 999], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm2], [echo a | nc -u 6666::1 999], [ignore], [ignore], [ignore]) +NS_CHECK_EXEC([vm3], [echo a | nc -u 6666::1 999], [ignore], [ignore], [ignore]) OVS_WAIT_UNTIL([ requests=`grep "UDP" -c vm1.pcap` -- 2.39.2 _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
