system-traffic: Add basic gre tunnel sanity test.

Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Daniele Di Proietto <diproiettod@vmware.com>

diff --git a/tests/system-common-macros.at b/tests/system-common-macros.at
index 92569f9..1b9b5c1 100644 (file)
--- a/tests/system-common-macros.at
+++ b/tests/system-common-macros.at
@@ -155,3 +155,7 @@ m4_define([NETNS_DAEMONIZE],
 # Do basic check for vxlan functionality, skip the test if it's not there.
 m4_define([OVS_CHECK_VXLAN],
     [AT_SKIP_IF([! ip link add foo type vxlan help 2>&1 | grep dstport >/dev/null])])
+
+# OVS_CHECK_GRE()
+m4_define([OVS_CHECK_GRE],
+    [AT_SKIP_IF([! ip link add foo type gretap help 2>&1 | grep gre >/dev/null])])

diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 10c5717..0a9c084 100644 (file)
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -147,6 +147,46 @@ NS_CHECK_EXEC([at_ns0], [ping -s 3200 -q -c 3 -i 0.3 -w 2 10.1.1.100 | FORMAT_PI
 OVS_TRAFFIC_VSWITCHD_STOP
 AT_CLEANUP
 
+AT_SETUP([datapath - ping over gre tunnel])
+OVS_CHECK_GRE()
+
+OVS_TRAFFIC_VSWITCHD_START()
+ADD_BR([br-underlay])
+
+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, "172.31.1.1/24")
+AT_CHECK([ip addr add dev br-underlay "172.31.1.100/24"])
+AT_CHECK([ip link set dev br-underlay up])
+
+dnl Set up tunnel endpoints on OVS outside the namespace and with a native
+dnl linux device inside the namespace.
+ADD_OVS_TUNNEL([gre], [br0], [at_gre0], [172.31.1.1], [10.1.1.100/24])
+ADD_NATIVE_TUNNEL([gretap], [ns_gre0], [at_ns0], [172.31.1.100], [10.1.1.1/24])
+
+dnl First, check the underlay
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 172.31.1.100 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+
+dnl Okay, now check the overlay with different packet sizes
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.100 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+NS_CHECK_EXEC([at_ns0], [ping -s 1600 -q -c 3 -i 0.3 -w 2 10.1.1.100 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+NS_CHECK_EXEC([at_ns0], [ping -s 3200 -q -c 3 -i 0.3 -w 2 10.1.1.100 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+
+OVS_TRAFFIC_VSWITCHD_STOP
+AT_CLEANUP
+
 AT_SETUP([conntrack - controller])
 CHECK_CONNTRACK()
 OVS_TRAFFIC_VSWITCHD_START()