#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# Test for "tc action mirred egress mirror" when the underlay route points at a
# bridge device with vlan filtering (802.1q).
#
# This test uses standard topology for testing mirror-to-gretap. See
# mirror_gre_topo_lib.sh for more details. The full topology is as follows:
#
#  +---------------------+                               +---------------------+
#  | H1                  |                               |                  H2 |
#  |     + $h1           |                               |           $h2 +     |
#  |     | 192.0.2.1/28  |                               |  192.0.2.2/28 |     |
#  +-----|---------------+                               +---------------|-----+
#        |                                                               |
#  +-----|---------------------------------------------------------------|-----+
#  | SW  o---> mirror                                                    |     |
#  | +---|---------------------------------------------------------------|---+ |
#  | |   + $swp1                  + br1 (802.1q bridge)            $swp2 +   | |
#  | |                              192.0.2.129/28                           | |
#  | |   + $swp3                    2001:db8:2::1/64                         | |
#  | |   | vid555                   vid555[pvid,untagged]                    | |
#  | +---|-------------------------------------------------------------------+ |
#  |     |                                          ^                      ^   |
#  |     |                     + gt6 (ip6gretap)    |   + gt4 (gretap)     |   |
#  |     |                     : loc=2001:db8:2::1  |   : loc=192.0.2.129  |   |
#  |     |                     : rem=2001:db8:2::2 -+   : rem=192.0.2.130 -+   |
#  |     |                     : ttl=100                : ttl=100              |
#  |     |                     : tos=inherit            : tos=inherit          |
#  +-----|---------------------:------------------------:----------------------+
#        |                     :                        :
#  +-----|---------------------:------------------------:----------------------+
#  | H3  + $h3                 + h3-gt6(ip6gretap)      + h3-gt4 (gretap)      |
#  |     |                       loc=2001:db8:2::2        loc=192.0.2.130      |
#  |     + $h3.555               rem=2001:db8:2::1        rem=192.0.2.129      |
#  |       192.0.2.130/28        ttl=100                  ttl=100              |
#  |       2001:db8:2::2/64      tos=inherit              tos=inherit          |
#  +---------------------------------------------------------------------------+

ALL_TESTS="
	test_gretap
	test_ip6gretap
"

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
	# Avoid changing br1's PVID while it is operational as a L3 interface.
	ip link set dev br1 down

	ip link set dev $swp3 master br1
	bridge vlan add dev br1 vid 555 pvid untagged self
	ip link set dev br1 up
	ip address add dev br1 192.0.2.129/28
	ip address add dev br1 2001:db8:2::1/64

	ip -4 route add 192.0.2.130/32 dev br1
	ip -6 route add 2001:db8:2::2/128 dev br1

	vlan_create $h3 555 v$h3 192.0.2.130/28 2001:db8:2::2/64
	bridge vlan add dev $swp3 vid 555
}

cleanup()
{
	pre_cleanup

	ip link set dev $swp3 nomaster
	vlan_destroy $h3 555

	mirror_gre_topo_destroy
	vrf_cleanup
}

test_gretap()
{
	ip neigh replace 192.0.2.130 lladdr $(mac_get $h3) \
		 nud permanent dev br1
	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_ip6gretap()
{
	ip neigh replace 2001:db8:2::2 lladdr $(mac_get $h3) \
		nud permanent dev br1
	full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap"
	full_test_span_gre_dir gt6 egress 0 8 "mirror to ip6gretap"
}

tests()
{
	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"
tests

if ! tc_offload_check; then
	echo "WARN: Could not test offloaded functionality"
else
	tcflags="skip_sw"
	tests
fi

exit $EXIT_STATUS