Recently, during some conntrack testing a bug was uncovered in a DPDK PMD, which doesn't support an IPv4 packet with a zero checksum value. In order to show that the connection tracking code in userspace supports IPv4 UDP with a zero checksum, add a test case to enforce this behavior.
Reported-at: http://mails.dpdk.org/archives/dev/2021-January/198528.html Reported-by: Paolo Valerio <[email protected]> Signed-off-by: Aaron Conole <[email protected]> --- tests/system-traffic.at | 43 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/tests/system-traffic.at b/tests/system-traffic.at index fb5b9a36d2..4971ccc966 100644 --- a/tests/system-traffic.at +++ b/tests/system-traffic.at @@ -5927,6 +5927,48 @@ ovs-appctl dpif/dump-flows br0 OVS_TRAFFIC_VSWITCHD_STOP AT_CLEANUP + +AT_SETUP([conntrack - IPv4 UDP zero checksum]) +dnl This tracks sending zero checksum packets for udp over ipv4 +CHECK_CONNTRACK() +OVS_TRAFFIC_VSWITCHD_START() +OVS_CHECK_CT_CLEAR() + +ADD_NAMESPACES(at_ns0, at_ns1) +ADD_VETH(p0, at_ns0, br0, "10.1.1.1/24", "f0:00:00:01:01:01") +ADD_VETH(p1, at_ns1, br0, "10.1.1.2/24", "f0:00:00:01:01:02") +dnl setup ct flows +AT_DATA([flows.txt], [dnl +table=0,priority=10 ip,udp,ct_state=-trk action=ct(zone=1,table=1) +table=0,priority=0 action=drop +table=1,priority=10 ct_state=-est+trk+new,ip,ct_zone=1,in_port=1 action=ct(commit,table=2) +table=1,priority=10 ct_state=+est-new+trk,ct_zone=1,in_port=1 action=resubmit(,2) +table=1,priority=0 action=drop +table=2,priority=10 ct_state=+trk+new,in_port=1 action=2 +table=2,priority=10 ct_state=+trk+est action=2 +]) + +AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt]) + +# sending udp pkt +NS_CHECK_EXEC([at_ns0], [$PYTHON3 $srcdir/sendpkt.py p0 f0 00 00 01 01 02 f0 00 00 01 01 01 08 00 45 00 00 28 00 01 00 00 40 11 64 c0 0a 01 01 01 0a 01 01 02 04 d2 04 d2 00 14 00 00 aa aa aa aa aa aa aa aa aa aa aa aa > /dev/null]) + +sleep 1 + +dnl ensure CT picked up the packet +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.1.1)], [0], [dnl +udp,orig=(src=10.1.1.1,dst=10.1.1.2,sport=<cleared>,dport=<cleared>),reply=(src=10.1.1.2,dst=10.1.1.1,sport=<cleared>,dport=<cleared>) +]) + +AT_CHECK([ovs-ofctl dump-flows br0 | grep table=2, | OFPROTO_CLEAR_DURATION_IDLE], + [0], [dnl + cookie=0x0, duration=<cleared>, table=2, n_packets=1, n_bytes=54, idle_age=<cleared>, priority=10,ct_state=+new+trk,in_port=1 actions=output:2 + cookie=0x0, duration=<cleared>, table=2, n_packets=0, n_bytes=0, idle_age=<cleared>, priority=10,ct_state=+est+trk actions=output:2 +]) + +OVS_TRAFFIC_VSWITCHD_STOP +AT_CLEANUP + AT_SETUP([conntrack - Multiple ICMP traverse]) dnl This tracks sending ICMP packets via conntrack multiple times for the dnl same packet @@ -5971,6 +6013,7 @@ AT_CHECK([ovs-ofctl dump-flows br0 | grep table=2, | OFPROTO_CLEAR_DURATION_IDLE OVS_TRAFFIC_VSWITCHD_STOP AT_CLEANUP + AT_BANNER([802.1ad]) AT_SETUP([802.1ad - vlan_limit]) -- 2.25.4 _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
