The patch adds the test framework for OVS using afxdp.
Currently there are two test cases, using ping and http
as traffic forwarding through ovs with 2 afxdp netdev.

Signed-off-by: William Tu <u9012063@...>
---
tests/automake.mk | 17 +++++
tests/ofproto-macros.at | 1 +
tests/system-afxdp-macros.at | 148 ++++++++++++++++++++++++++++++++++++++++
tests/system-afxdp-testsuite.at | 25 +++++++
tests/system-afxdp-traffic.at | 38 +++++++++++
5 files changed, 229 insertions(+)
create mode 100644 tests/system-afxdp-macros.at
create mode 100644 tests/system-afxdp-testsuite.at
create mode 100644 tests/system-afxdp-traffic.at

diff --git a/tests/automake.mk b/tests/automake.mk
index 732dc4ab9bdc..c112ae3fcf13 100644
--- a/tests/automake.mk
+++ b/tests/automake.mk
@@ -4,11 +4,13 @@ EXTRA_DIST += \
$(SYSTEM_TESTSUITE_AT) \
$(SYSTEM_KMOD_TESTSUITE_AT) \
$(SYSTEM_USERSPACE_TESTSUITE_AT) \
+ $(SYSTEM_AFXDP_TESTSUITE_AT) \
$(SYSTEM_BPF_TESTSUITE_AT) \
$(SYSTEM_OFFLOADS_TESTSUITE_AT) \
$(TESTSUITE) \
$(SYSTEM_KMOD_TESTSUITE) \
$(SYSTEM_USERSPACE_TESTSUITE) \
+ $(SYSTEM_AFXDP_TESTSUITE) \
$(SYSTEM_BPF_TESTSUITE) \
$(SYSTEM_OFFLOADS_TESTSUITE) \
tests/atlocal.in \
@@ -124,6 +126,11 @@ SYSTEM_USERSPACE_TESTSUITE_AT = \
tests/system-userspace-macros.at \
tests/system-userspace-packet-type-aware.at

+SYSTEM_AFXDP_TESTSUITE_AT = \
+ tests/system-afxdp-testsuite.at \
+ tests/system-afxdp-traffic.at \
+ tests/system-afxdp-macros.at
+
SYSTEM_TESTSUITE_AT = \
tests/system-common-macros.at \
tests/system-ovn.at \
@@ -142,6 +149,7 @@ TESTSUITE = $(srcdir)/tests/testsuite
TESTSUITE_PATCH = $(srcdir)/tests/testsuite.patch
SYSTEM_KMOD_TESTSUITE = $(srcdir)/tests/system-kmod-testsuite
SYSTEM_USERSPACE_TESTSUITE = $(srcdir)/tests/system-userspace-testsuite
+SYSTEM_AFXDP_TESTSUITE = $(srcdir)/tests/system-afxdp-testsuite
SYSTEM_BPF_TESTSUITE = $(srcdir)/tests/system-bpf-testsuite
BPF_TESTSUITE_PATCH = $(srcdir)/tests/system-bpf-testsuite.patch
SYSTEM_OFFLOADS_TESTSUITE = $(srcdir)/tests/system-offloads-testsuite
@@ -273,6 +281,11 @@ check-system-userspace: all
set $(SHELL) '$(SYSTEM_USERSPACE_TESTSUITE)' -C tests AUTOTEST_PATH='$(AUTOTEST_PATH)' $(TESTSUITEFLAGS) -j1; \
"$$@" || (test X'$(RECHECK)' = Xyes && "$$@" --recheck)

+check-afxdp: all
+ $(MAKE) install
+ set $(SHELL) '$(SYSTEM_AFXDP_TESTSUITE)' -C tests AUTOTEST_PATH='$(AUTOTEST_PATH)' $(TESTSUITEFLAGS) -j1; \
+ "$$@" || (test X'$(RECHECK)' = Xyes && "$$@" --recheck)
+
check-bpf: all
$(MAKE) install
set $(SHELL) '$(SYSTEM_BPF_TESTSUITE)' -C tests AUTOTEST_PATH='$(AUTOTEST_PATH)' $(TESTSUITEFLAGS) -j1; \
@@ -306,6 +319,10 @@ $(SYSTEM_USERSPACE_TESTSUITE): package.m4 $(SYSTEM_TESTSUITE_AT) $(SYSTEM_USERSP
$(AM_V_GEN)$(AUTOTEST) -I '$(srcdir)' -o $@.tmp $@.at
$(AM_V_at)mv $@.tmp $@

+$(SYSTEM_AFXDP_TESTSUITE): package.m4 $(SYSTEM_TESTSUITE_AT) $(SYSTEM_AFXDP_TESTSUITE_AT) $(COMMON_MACROS_AT)
+ $(AM_V_GEN)$(AUTOTEST) -I '$(srcdir)' -o $@.tmp $@.at
+ $(AM_V_at)mv $@.tmp $@
+
$(SYSTEM_BPF_TESTSUITE): package.m4 $(SYSTEM_TESTSUITE_AT) $(SYSTEM_BPF_TESTSUITE_AT) $(BPF_TESTSUITE_PATCH) $(COMMON_MACROS_AT)
$(AM_V_GEN)$(AUTOTEST) -I '$(srcdir)' -o $@.tmp $@.at
$(AM_V_at)mv $@.tmp $@
diff --git a/tests/ofproto-macros.at b/tests/ofproto-macros.at
index 487e40cc8ef2..e39498f24800 100644
--- a/tests/ofproto-macros.at
+++ b/tests/ofproto-macros.at
@@ -336,6 +336,7 @@ m4_define([_OVS_VSWITCHD_START],
on_exit "kill_ovs_vswitchd `cat ovs-vswitchd.pid`"
AT_CHECK([[sed < stderr '
/bpf|INFO|/d
+/netdev_linux|INFO|.*/d
/ovs_numa|INFO|Discovered /d
/vlog|INFO|opened log file/d
/vswitchd|INFO|ovs-vswitchd (Open vSwitch)/d
diff --git a/tests/system-afxdp-macros.at b/tests/system-afxdp-macros.at
new file mode 100644
index 000000000000..21e07ea05e3b
--- /dev/null
+++ b/tests/system-afxdp-macros.at
@@ -0,0 +1,148 @@
+# _ADD_BR([name])
+#
+# Expands into the proper ovs-vsctl commands to create a bridge with the
+# appropriate type and properties
+m4_define([_ADD_BR], [[add-br $1 -- set Bridge $1 datapath_type="netdev" protocols=OpenFlow10,OpenFlow11,OpenFlow12,OpenFlow13,OpenFlow14,OpenFlow15 fail-mode=secure ]])
+
+# OVS_TRAFFIC_VSWITCHD_START([vsctl-args], [vsctl-output], [=override])
+#
+# Creates a database and starts ovsdb-server, starts ovs-vswitchd
+# connected to that database, calls ovs-vsctl to create a bridge named
+# br0 with predictable settings, passing 'vsctl-args' as additional
+# commands to ovs-vsctl. If 'vsctl-args' causes ovs-vsctl to provide
+# output (e.g. because it includes "create" commands) then 'vsctl-output'
+# specifies the expected output after filtering through uuidfilt.
+m4_define([OVS_TRAFFIC_VSWITCHD_START],
+ [
+ export OVS_PKGDATADIR=$(`pwd`)
+ #OVS_WAIT_WHILE([ip link show ovs-netdev])
+ umount /sys/fs/bpf/
+ AT_CHECK([mount -t bpf none /sys/fs/bpf])
+ AT_CHECK([mkdir -p /sys/fs/bpf/ovs])
+ _OVS_VSWITCHD_START([--disable-system])
+ dnl Add bridges, ports, etc.
+ OVS_WAIT_WHILE([ip link show br0])
+ AT_CHECK([ovs-vsctl -- _ADD_BR([br0]) -- $1 m4_if([$2], [], [], [| uuidfilt])], [0], [$2])
+])
+
+# OVS_TRAFFIC_VSWITCHD_STOP([WHITELIST], [extra_cmds])
+#
+# Gracefully stops ovs-vswitchd and ovsdb-server, checking their log files
+# for messages with severity WARN or higher and signaling an error if any
+# is present. The optional WHITELIST may contain shell-quoted "sed"
+# commands to delete any warnings that are actually expected, e.g.:
+#
+# OVS_TRAFFIC_VSWITCHD_STOP(["/expected error/d"])
+#
+# 'extra_cmds' are shell commands to be executed afte OVS_VSWITCHD_STOP() is
+# invoked. They can be used to perform additional cleanups such as name space
+# removal.
+m4_define([OVS_TRAFFIC_VSWITCHD_STOP],
+ [OVS_VSWITCHD_STOP([dnl
+$1";/netdev_linux.*obtaining netdev stats via vport failed/d
+/dpif_netlink.*Generic Netlink family 'ovs_datapath' does not exist. The Open vSwitch kernel module is probably not loaded./d"])
+ AT_CHECK([:; $2])
+ AT_CHECK([umount /sys/fs/bpf])
+ ])
+
+m4_define([ADD_VETH_AFXDP],
+ [ AT_CHECK([ip link add $1 type veth peer name ovs-$1 || return 77])
+ CONFIGURE_VETH_OFFLOADS([$1])
+ AT_CHECK([ip link set $1 netns $2])
+ AT_CHECK([ip link set dev ovs-$1 up])
+ AT_CHECK([ovs-vsctl add-port $3 ovs-$1 -- \
+ set interface ovs-$1 external-ids:iface-id="$1" type="afxdp"])
+ NS_CHECK_EXEC([$2], [ip addr add $4 dev $1 $7])
+ NS_CHECK_EXEC([$2], [ip link set dev $1 up])
+ if test -n "$5"; then
+ NS_CHECK_EXEC([$2], [ip link set dev $1 address $5])
+ fi
+ if test -n "$6"; then
+ NS_CHECK_EXEC([$2], [ip route add default via $6])
+ fi
+ on_exit 'ip link del ovs-$1'
+ ]
+)
+
+
+# CONFIGURE_VETH_OFFLOADS([VETH])
+#
+# Disable TX offloads for veths. The userspace datapath uses the AF_PACKET
+# socket to receive packets for veths. Unfortunately, the AF_PACKET socket
+# doesn't play well with offloads:
+# 1. GSO packets are received without segmentation and therefore discarded.
+# 2. Packets with offloaded partial checksum are received with the wrong
+# checksum, therefore discarded by the receiver.
+#
+# By disabling tx offloads in the non-OVS side of the veth peer we make sure
+# that the AF_PACKET socket will not receive bad packets.
+#
+# This is a workaround, and should be removed when offloads are properly
+# supported in netdev-linux.
+m4_define([CONFIGURE_VETH_OFFLOADS],
+ [AT_CHECK([ethtool -K $1 tx off], [0], [ignore], [ignore])]
+)
+
+# CHECK_CONNTRACK()
+#
+# Perform requirements checks for running conntrack tests.
+#
+m4_define([CHECK_CONNTRACK],
+ [AT_SKIP_IF([test $HAVE_PYTHON = no])]
+)
+
+# CHECK_CONNTRACK_ALG()
+#
+# Perform requirements checks for running conntrack ALG tests. The userspace
+# supports FTP and TFTP.
+#
+m4_define([CHECK_CONNTRACK_ALG])
+
+# CHECK_CONNTRACK_FRAG()
+#
+# Perform requirements checks for running conntrack fragmentations tests.
+# The userspace doesn't support fragmentation yet, so skip the tests.
+m4_define([CHECK_CONNTRACK_FRAG],
+[
+ AT_SKIP_IF([:])
+])
+
+# CHECK_CONNTRACK_LOCAL_STACK()
+#
+# Perform requirements checks for running conntrack tests with local stack.
+# While the kernel connection tracker automatically passes all the connection
+# tracking state from an internal port to the OpenvSwitch kernel module, there
+# is simply no way of doing that with the userspace, so skip the tests.
+m4_define([CHECK_CONNTRACK_LOCAL_STACK],
+[
+ AT_SKIP_IF([:])
+])
+
+# CHECK_CONNTRACK_NAT()
+#
+# Perform requirements checks for running conntrack NAT tests. The userspace
+# datapath supports NAT.
+#
+m4_define([CHECK_CONNTRACK_NAT])
+
+# CHECK_CT_DPIF_FLUSH_BY_CT_TUPLE()
+#
+# Perform requirements checks for running ovs-dpctl flush-conntrack by
+# conntrack 5-tuple test. The userspace datapath does not support
+# this feature yet.
+m4_define([CHECK_CT_DPIF_FLUSH_BY_CT_TUPLE],
+[
+ AT_SKIP_IF([:])
+])
+
+# CHECK_CT_DPIF_SET_GET_MAXCONNS()
+#
+# Perform requirements checks for running ovs-dpctl ct-set-maxconns or
+# ovs-dpctl ct-get-maxconns. The userspace datapath does support this feature.
+m4_define([CHECK_CT_DPIF_SET_GET_MAXCONNS])
+
+# CHECK_CT_DPIF_GET_NCONNS()
+#
+# Perform requirements checks for running ovs-dpctl ct-get-nconns. The
+# userspace datapath does support this feature.
+m4_define([CHECK_CT_DPIF_GET_NCONNS])
diff --git a/tests/system-afxdp-testsuite.at b/tests/system-afxdp-testsuite.at
new file mode 100644
index 000000000000..ff56ba3c56ab
--- /dev/null
+++ b/tests/system-afxdp-testsuite.at
@@ -0,0 +1,25 @@
+AT_INIT
+
+AT_COPYRIGHT([Copyright (c) 2018 Nicira, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.])
+
+m4_ifdef([AT_COLOR_TESTS], [AT_COLOR_TESTS])
+
+m4_include([tests/ovs-macros.at])
+m4_include([tests/ovsdb-macros.at])
+m4_include([tests/ofproto-macros.at])
+m4_include([tests/system-afxdp-macros.at])
+m4_include([tests/system-common-macros.at])
+
+m4_include([tests/system-afxdp-traffic.at])
diff --git a/tests/system-afxdp-traffic.at b/tests/system-afxdp-traffic.at
new file mode 100644
index 000000000000..cee33c274f69
--- /dev/null
+++ b/tests/system-afxdp-traffic.at
@@ -0,0 +1,38 @@
+AT_BANNER([AFXDP netdev datapath-sanity])
+
+AT_SETUP([datapath - ping between two ports])
+OVS_TRAFFIC_VSWITCHD_START()
+
+AT_CHECK([ovs-ofctl add-flow br0 "actions=normal"])
+
+ADD_NAMESPACES(at_ns0, at_ns1)
+
+ADD_VETH_AFXDP(p0, at_ns0, br0, "10.1.1.1/24")
+ADD_VETH_AFXDP(p1, at_ns1, br0, "10.1.1.2/24")
+
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.2 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+OVS_TRAFFIC_VSWITCHD_STOP
+AT_CLEANUP
+
+AT_SETUP([datapath - http between two ports])
+OVS_TRAFFIC_VSWITCHD_START()
+
+AT_CHECK([ovs-ofctl add-flow br0 "actions=normal"])
+
+ADD_NAMESPACES(at_ns0, at_ns1)
+
+ADD_VETH(p0, at_ns0, br0, "10.1.1.1/24")
+ADD_VETH(p1, at_ns1, br0, "10.1.1.2/24")
+
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.2 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+
+OVS_START_L7([at_ns1], [http])
+NS_CHECK_EXEC([at_ns0], [wget 10.1.1.2 -t 3 -T 1 --retry-connrefused -v -o wget0.log])
+
+OVS_TRAFFIC_VSWITCHD_STOP
+AT_CLEANUP
+
--
2.7.4