selftests: forwarding: Test mirror-to-gre w/ UL VLAN

Test for "tc action mirred egress mirror" that mirrors to a gretap
netdevice whose underlay route points at a vlan device.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_vlan.sh b/tools/testing/selftests/net/forwarding/mirror_gre_vlan.sh
new file mode 100755 (executable)
index 0000000..88cecdb
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/mirror_gre_vlan.sh
@@ -0,0 +1,92 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# This test uses standard topology for testing gretap. See
+# mirror_gre_topo_lib.sh for more details.
+#
+# Test for "tc action mirred egress mirror" that mirrors to a gretap netdevice
+# whose underlay route points at a vlan device.
+
+ALL_TESTS="
+       test_gretap
+"
+
+NUM_NETIFS=6
+source lib.sh
+source mirror_lib.sh
+source mirror_gre_lib.sh
+source mirror_gre_topo_lib.sh
+
+setup_prepare()
+{
+       h1=${NETIFS[p1]}
+       swp1=${NETIFS[p2]}
+
+       swp2=${NETIFS[p3]}
+       h2=${NETIFS[p4]}
+
+       swp3=${NETIFS[p5]}
+       h3=${NETIFS[p6]}
+
+       vrf_prepare
+       mirror_gre_topo_create
+
+       ip link add name $swp3.555 link $swp3 type vlan id 555
+       ip address add dev $swp3.555 192.0.2.129/32
+       ip address add dev $swp3.555 2001:db8:2::1/128
+       ip link set dev $swp3.555 up
+
+       ip route add 192.0.2.130/32 dev $swp3.555
+       ip -6 route add 2001:db8:2::2/128 dev $swp3.555
+
+       ip link add name $h3.555 link $h3 type vlan id 555
+       ip link set dev $h3.555 master v$h3
+       ip address add dev $h3.555 192.0.2.130/28
+       ip address add dev $h3.555 2001:db8:2::2/64
+       ip link set dev $h3.555 up
+}
+
+cleanup()
+{
+       pre_cleanup
+
+       ip link del dev $h3.555
+       ip link del dev $swp3.555
+
+       mirror_gre_topo_destroy
+       vrf_cleanup
+}
+
+test_gretap()
+{
+       full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap"
+       full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap"
+}
+
+test_all()
+{
+       slow_path_trap_install $swp1 ingress
+       slow_path_trap_install $swp1 egress
+
+       tests_run
+
+       slow_path_trap_uninstall $swp1 egress
+       slow_path_trap_uninstall $swp1 ingress
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+tcflags="skip_hw"
+test_all
+
+if ! tc_offload_check; then
+       echo "WARN: Could not test offloaded functionality"
+else
+       tcflags="skip_sw"
+       test_all
+fi
+
+exit $EXIT_STATUS