selftests: openvswitch: add a test for ipv4 forwarding

This is a simple ipv4 bidirectional connectivity test.

Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: Adrian Moreno <amorenoz@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
index 5cdacb3..5d60a94 100755 (executable)
--- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
+++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
@@ -12,6 +12,7 @@ TRACING=0
 
 tests="
        arp_ping                                eth-arp: Basic arp ping between two NS
+       connect_v4                              ip4-xon: Basic ipv4 ping between two NS
        netlink_checks                          ovsnl: validate netlink attrs and settings
        upcall_interfaces                       ovs: test the upcall interfaces"
 
@@ -192,6 +193,45 @@ test_arp_ping () {
        return 0
 }
 
+# connect_v4 test
+#  - client has 1500 byte MTU
+#  - server has 1500 byte MTU
+#  - use ICMP to ping in each direction
+test_connect_v4 () {
+
+       sbx_add "test_connect_v4" || return $?
+
+       ovs_add_dp "test_connect_v4" cv4 || return 1
+
+       info "create namespaces"
+       for ns in client server; do
+               ovs_add_netns_and_veths "test_connect_v4" "cv4" "$ns" \
+                   "${ns:0:1}0" "${ns:0:1}1" || return 1
+       done
+
+
+       ip netns exec client ip addr add 172.31.110.10/24 dev c1
+       ip netns exec client ip link set c1 up
+       ip netns exec server ip addr add 172.31.110.20/24 dev s1
+       ip netns exec server ip link set s1 up
+
+       # Add forwarding for ARP and ip packets - completely wildcarded
+       ovs_add_flow "test_connect_v4" cv4 \
+               'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
+       ovs_add_flow "test_connect_v4" cv4 \
+               'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
+       ovs_add_flow "test_connect_v4" cv4 \
+               'in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' '2' || return 1
+       ovs_add_flow "test_connect_v4" cv4 \
+               'in_port(2),eth(),eth_type(0x0800),ipv4(src=172.31.110.20)' '1' || return 1
+
+       # do a ping
+       ovs_sbx "test_connect_v4" ip netns exec client ping 172.31.110.20 -c 3 || return 1
+
+       info "done..."
+       return 0
+}
+
 # netlink_validation
 # - Create a dp
 # - check no warning with "old version" simulation