[ovs-dev] [PATCH 8/8] system-traffic.at: Add ip6erspan v2 tunnel test that doesn't depend on upstream gre module

[Yifeng Sun]

Introduce a new test that doesn't setup native ip6erspan v2 tunnels but sends
simulated raw packets.
This test is supposed to only run for kernel version from 4.4.x to 4.15.x.

Signed-off-by: Yifeng Sun <pkusunyifeng at gmail.com>
---
 tests/system-traffic.at | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 60fd032..1eeaff0 100644
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -765,6 +765,53 @@ AT_CHECK([tcpdump -xx -r p0.pcap 2>&1 | egrep "IP6 fc00:100::100 > fc00:100::1:
 OVS_TRAFFIC_VSWITCHD_STOP
 AT_CLEANUP
 
+AT_SETUP([datapath - ping over ip6erspan v2 tunnel by simulated packets])
+OVS_CHECK_KERNEL(4, 4, 15)
+
+OVS_TRAFFIC_VSWITCHD_START()
+AT_CHECK([ovs-vsctl -- set bridge br0 other-config:hwaddr=\"f2:ff:00:00:00:01\"])
+ADD_BR([br-underlay], [set bridge br-underlay other-config:hwaddr=\"f2:ff:00:00:00:02\"])
+
+AT_CHECK([ovs-ofctl add-flow br0 "actions=normal"])
+AT_CHECK([ovs-ofctl add-flow br-underlay "actions=normal"])
+
+ADD_NAMESPACES(at_ns0)
+
+dnl Set up underlay link from host into the namespace using veth pair.
+ADD_VETH(p0, at_ns0, br-underlay, "fc00:100::1/96", f2:ff:00:00:00:03, [], nodad)
+AT_CHECK([ip addr add dev br-underlay "fc00:100::100/96" nodad])
+AT_CHECK([ip link set dev br-underlay up])
+
+dnl Set up tunnel endpoints on OVS outside the namespace and simulate a native
+dnl linux device inside the namespace.
+ADD_OVS_TUNNEL6([ip6erspan], [br0], [at_erspan0], [fc00:100::1], [10.1.1.100/24],
+                [options:key=121 options:erspan_ver=2 options:erspan_dir=0 options:erspan_hwid=0x7])
+
+OVS_WAIT_UNTIL([ip netns exec at_ns0 ping6 -c 2 fc00:100::100])
+
+ip netns exec at_ns0 tcpdump -U -i p0 -w p0.pcap &
+sleep 1
+
+dnl First, check the underlay.
+NS_CHECK_EXEC([at_ns0], [ping6 -q -c 3 -i 0.3 -w 2 fc00:100::100 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+
+dnl Okay, now send raw arp request and icmp echo request.
+ovs-ofctl -O OpenFlow13 packet-out br-underlay "in_port=1 packet=f2ff00000002f2ff0000000386dd60008531003e2f40fc000100000000000000000000000001fc000100000000000000000000000100100088be0000000620000079af514f9900008070fffffffffffff2ff0000000408060001080006040001f2ff000000040a0101010000000000000a010164 actions=normal"
+
+sleep 1
+AT_CHECK([tcpdump -xx -r p0.pcap 2>&1 | egrep "0806 0001 0800 0604 0002" 2>&1 1>/dev/null])
+AT_CHECK([tcpdump -xx -r p0.pcap 2>&1 | egrep "0a01 0164 f2ff 0000 0004" 2>&1 1>/dev/null])
+
+ovs-ofctl -O OpenFlow13 packet-out br-underlay "in_port=1 packet=f2ff00000002f2ff0000000386dd60008531007e3c40fc000100000000000000000000000001fc0001000000000000000000000001002f00040104010100100088be0000000720004079af514f9b00008070f2ff00000001f2ff00000004080045000054ffcb4000400124770a0101010a0101640800419e23ac000112d7685b000000004caf0c0000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637 actions=normal"
+
+sleep 1
+AT_CHECK([tcpdump -xx -r p0.pcap 2>&1 | egrep "IP6 fc00:100::100 > fc00:100::1: GREv0, .* length 118" 2>&1 1>/dev/null])
+
+OVS_TRAFFIC_VSWITCHD_STOP
+AT_CLEANUP
+
 AT_SETUP([datapath - clone action])
 OVS_TRAFFIC_VSWITCHD_START()
 
-- 
2.7.4