selftests: mlxsw: extack: Test VLAN add on a port device

Test mapping a VLAN at a port device such that on the same VLAN, there
already is an unoffloadable VXLAN device.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/drivers/net/mlxsw/extack.sh

@@ -8,6 +8,7 @@ lib_dir=$(dirname $0)/../../../net/forwarding
 ALL_TESTS="
 	netdev_pre_up_test
 	vxlan_vlan_add_test
+	port_vlan_add_test
 "
 NUM_NETIFS=2
 source $lib_dir/lib.sh
@@ -105,6 +106,35 @@ vxlan_vlan_add_test()
 	ip link del dev br1
 }
 
+port_vlan_add_test()
+{
+	RET=0
+
+	ip link add name br1 up type bridge vlan_filtering 1 mcast_snooping 0
+
+	# Unsupported configuration: mlxsw demands VXLAN with "noudpcsum".
+	ip link add name vx1 up type vxlan id 1000 \
+		local 192.0.2.17 remote 192.0.2.18 \
+		dstport 4789 tos inherit ttl 100
+
+	ip link set dev $swp1 master br1
+	check_err $?
+
+	bridge vlan del dev $swp1 vid 1
+
+	ip link set dev vx1 master br1
+	check_err $?
+
+	bridge vlan add dev $swp1 vid 1 pvid untagged 2>&1 >/dev/null \
+		| grep -q mlxsw_spectrum
+	check_err $?
+
+	log_test "extack - map VLAN at port"
+
+	ip link del dev vx1
+	ip link del dev br1
+}
+
 trap cleanup EXIT
 
 setup_prepare