system-traffic: Add basic vxlan tunnel sanity test.

This test is skipped if the 'ip' command cannot interpret the vxlan 'dstport'
option; this is used as a proxy for detecting native kernel support for this
tunnel type.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Daniele Di Proietto <diproiettod@vmware.com>

diff --git a/tests/system-common-macros.at b/tests/system-common-macros.at
index 8144db9..2761c08 100644 (file)
--- a/tests/system-common-macros.at
+++ b/tests/system-common-macros.at
@@ -75,6 +75,44 @@ m4_define([ADD_VLAN],
     ]
 )
 
+# ADD_OVS_TUNNEL([type], [bridge], [port], [remote-addr], [overlay-addr])
+#
+# Add an ovs-based tunnel device in the root namespace, with name 'port' and
+# type 'type'. The tunnel device will be configured as point-to-point with the
+# 'remote-addr' as the underlay address of the remote tunnel endpoint.
+#
+# 'port will be configured with the address 'overlay-addr'.
+#
+m4_define([ADD_OVS_TUNNEL],
+   [AT_CHECK([ovs-vsctl add-port $2 $3 -- \
+              set int $3 type=$1 options:remote_ip=$4])
+    AT_CHECK([ip addr add dev $2 $5])
+    AT_CHECK([ip link set dev $2 up])
+    AT_CHECK([ip link set dev $2 mtu 1450])
+    ON_EXIT([ip addr del dev $2 $5])
+   ]
+)
+
+# ADD_NATIVE_TUNNEL([type], [port], [namespace], [remote-addr], [overlay-addr],
+#                   [link-args])
+#
+# Add a native tunnel device within 'namespace', with name 'port' and type
+# 'type'. The tunnel device will be configured as point-to-point with the
+# 'remote-addr' as the underlay address of the remote tunnel endpoint (as
+# viewed from the perspective of that namespace).
+#
+# 'port' will be configured with the address 'overlay-addr'. 'link-args' is
+# made available so that additional arguments can be passed to "ip link",
+# for instance to configure the vxlan destination port.
+#
+m4_define([ADD_NATIVE_TUNNEL],
+   [NS_CHECK_EXEC([$3], [ip link add dev $2 type $1 remote $4 $6])
+    NS_CHECK_EXEC([$3], [ip addr add dev $2 $5])
+    NS_CHECK_EXEC([$3], [ip link set dev $2 up])
+    NS_CHECK_EXEC([$3], [ip link set dev $2 mtu 1450])
+   ]
+)
+
 # FORMAT_PING([])
 #
 # Strip variant pieces from ping output so the output can be reliably compared.

diff --git a/tests/system-kmod-macros.at b/tests/system-kmod-macros.at
index 2e2bf4e..5fab7b7 100644 (file)
--- a/tests/system-kmod-macros.at
+++ b/tests/system-kmod-macros.at
@@ -13,9 +13,15 @@ m4_define([_ADD_BR], [[add-br $1]])
 # output (e.g. because it includes "create" commands) then 'vsctl-output'
 # specifies the expected output after filtering through uuidfilt.pl.
 #
+# Best-effort loading of all available vport modules is performed.
+#
 m4_define([OVS_TRAFFIC_VSWITCHD_START],
-  [ AT_CHECK([modprobe openvswitch])
-    ON_EXIT([modprobe -r openvswitch])
+  [AT_CHECK([modprobe openvswitch])
+   ON_EXIT([modprobe -r openvswitch])
+   m4_foreach([mod], [[vport_geneve], [vport_gre], [vport_lisp], [vport_stt], [vport_vxlan]],
+              [modprobe -q mod || echo "Module mod not loaded."
+               ON_EXIT([modprobe -q -r mod])])
+   ON_EXIT([ovs-dpctl del-dp ovs-system])
    _OVS_VSWITCHD_START([])
    dnl Add bridges, ports, etc.
    AT_CHECK([ovs-vsctl -- _ADD_BR([br0]) -- set bridge br0 protocols=[[OpenFlow10,OpenFlow11,OpenFlow12,OpenFlow13,OpenFlow14,OpenFlow15]] fail-mode=secure -- $1 m4_if([$2], [], [], [| ${PERL} $srcdir/uuidfilt.pl])], [0], [$2])

diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 8324480..7dbed68 100644 (file)
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -101,3 +101,41 @@ NS_CHECK_EXEC([at_ns0], [ping6 -s 3200 -q -c 3 -i 0.3 -w 2 fc00:1::2 | FORMAT_PI
 
 OVS_TRAFFIC_VSWITCHD_STOP
 AT_CLEANUP
+
+AT_SETUP([datapath - ping over vxlan tunnel])
+AT_SKIP_IF([! ip link add foo type vxlan help 2>&1 | grep dstport >/dev/null])
+
+OVS_TRAFFIC_VSWITCHD_START(
+   [set-fail-mode br0 standalone -- ])
+ADD_BR([br-underlay], [set-fail-mode br-underlay standalone])
+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([vxlan], [br0], [at_vxlan0], [172.31.1.1], [10.1.1.100/24])
+ADD_NATIVE_TUNNEL([vxlan], [at_vxlan1], [at_ns0], [172.31.1.100], [10.1.1.1/24],
+                  [id 0 dstport 4789])
+
+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