1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# This test uses standard topology for testing gretap. See
5# mirror_gre_topo_lib.sh for more details.
6#
7# Test how mirrors to gretap and ip6gretap react to changes to relevant
8# configuration.
9
10ALL_TESTS="
11	test_ttl
12	test_tun_up
13	test_egress_up
14	test_remote_ip
15	test_tun_del
16	test_route_del
17"
18
19NUM_NETIFS=6
20source lib.sh
21source mirror_lib.sh
22source mirror_gre_lib.sh
23source mirror_gre_topo_lib.sh
24
25setup_prepare()
26{
27	h1=${NETIFS[p1]}
28	swp1=${NETIFS[p2]}
29
30	swp2=${NETIFS[p3]}
31	h2=${NETIFS[p4]}
32
33	swp3=${NETIFS[p5]}
34	h3=${NETIFS[p6]}
35
36	vrf_prepare
37	mirror_gre_topo_create
38
39	# This test downs $swp3, which deletes the configured IPv6 address
40	# unless this sysctl is set.
41	sysctl_set net.ipv6.conf.$swp3.keep_addr_on_down 1
42
43	ip address add dev $swp3 192.0.2.129/28
44	ip address add dev $h3 192.0.2.130/28
45
46	ip address add dev $swp3 2001:db8:2::1/64
47	ip address add dev $h3 2001:db8:2::2/64
48}
49
50cleanup()
51{
52	pre_cleanup
53
54	ip address del dev $h3 2001:db8:2::2/64
55	ip address del dev $swp3 2001:db8:2::1/64
56
57	ip address del dev $h3 192.0.2.130/28
58	ip address del dev $swp3 192.0.2.129/28
59
60	sysctl_restore net.ipv6.conf.$swp3.keep_addr_on_down
61
62	mirror_gre_topo_destroy
63	vrf_cleanup
64}
65
66test_span_gre_ttl()
67{
68	local tundev=$1; shift
69	local type=$1; shift
70	local prot=$1; shift
71	local what=$1; shift
72
73	RET=0
74
75	mirror_install $swp1 ingress $tundev "matchall $tcflags"
76	tc filter add dev $h3 ingress pref 77 prot $prot \
77		flower ip_ttl 50 action pass
78
79	mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0
80
81	ip link set dev $tundev type $type ttl 50
82	mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10
83
84	ip link set dev $tundev type $type ttl 100
85	tc filter del dev $h3 ingress pref 77
86	mirror_uninstall $swp1 ingress
87
88	log_test "$what: TTL change ($tcflags)"
89}
90
91test_span_gre_tun_up()
92{
93	local tundev=$1; shift
94	local what=$1; shift
95
96	RET=0
97
98	ip link set dev $tundev down
99	mirror_install $swp1 ingress $tundev "matchall $tcflags"
100	fail_test_span_gre_dir $tundev ingress
101
102	ip link set dev $tundev up
103
104	quick_test_span_gre_dir $tundev ingress
105	mirror_uninstall $swp1 ingress
106
107	log_test "$what: tunnel down/up ($tcflags)"
108}
109
110test_span_gre_egress_up()
111{
112	local tundev=$1; shift
113	local remote_ip=$1; shift
114	local what=$1; shift
115
116	RET=0
117
118	ip link set dev $swp3 down
119	mirror_install $swp1 ingress $tundev "matchall $tcflags"
120	fail_test_span_gre_dir $tundev ingress
121
122	# After setting the device up, wait for neighbor to get resolved so that
123	# we can expect mirroring to work.
124	ip link set dev $swp3 up
125	setup_wait_dev $swp3
126	ping -c 1 -I $swp3 $remote_ip &>/dev/null
127
128	quick_test_span_gre_dir $tundev ingress
129	mirror_uninstall $swp1 ingress
130
131	log_test "$what: egress down/up ($tcflags)"
132}
133
134test_span_gre_remote_ip()
135{
136	local tundev=$1; shift
137	local type=$1; shift
138	local correct_ip=$1; shift
139	local wrong_ip=$1; shift
140	local what=$1; shift
141
142	RET=0
143
144	ip link set dev $tundev type $type remote $wrong_ip
145	mirror_install $swp1 ingress $tundev "matchall $tcflags"
146	fail_test_span_gre_dir $tundev ingress
147
148	ip link set dev $tundev type $type remote $correct_ip
149	quick_test_span_gre_dir $tundev ingress
150	mirror_uninstall $swp1 ingress
151
152	log_test "$what: remote address change ($tcflags)"
153}
154
155test_span_gre_tun_del()
156{
157	local tundev=$1; shift
158	local type=$1; shift
159	local flags=$1; shift
160	local local_ip=$1; shift
161	local remote_ip=$1; shift
162	local what=$1; shift
163
164	RET=0
165
166	mirror_install $swp1 ingress $tundev "matchall $tcflags"
167	quick_test_span_gre_dir $tundev ingress
168	ip link del dev $tundev
169	fail_test_span_gre_dir $tundev ingress
170
171	tunnel_create $tundev $type $local_ip $remote_ip \
172		      ttl 100 tos inherit $flags
173
174	# Recreating the tunnel doesn't reestablish mirroring, so reinstall it
175	# and verify it works for the follow-up tests.
176	mirror_uninstall $swp1 ingress
177	mirror_install $swp1 ingress $tundev "matchall $tcflags"
178	quick_test_span_gre_dir $tundev ingress
179	mirror_uninstall $swp1 ingress
180
181	log_test "$what: tunnel deleted ($tcflags)"
182}
183
184test_span_gre_route_del()
185{
186	local tundev=$1; shift
187	local edev=$1; shift
188	local route=$1; shift
189	local what=$1; shift
190
191	RET=0
192
193	mirror_install $swp1 ingress $tundev "matchall $tcflags"
194	quick_test_span_gre_dir $tundev ingress
195
196	ip route del $route dev $edev
197	fail_test_span_gre_dir $tundev ingress
198
199	ip route add $route dev $edev
200	quick_test_span_gre_dir $tundev ingress
201
202	mirror_uninstall $swp1 ingress
203
204	log_test "$what: underlay route removal ($tcflags)"
205}
206
207test_ttl()
208{
209	test_span_gre_ttl gt4 gretap ip "mirror to gretap"
210	test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap"
211}
212
213test_tun_up()
214{
215	test_span_gre_tun_up gt4 "mirror to gretap"
216	test_span_gre_tun_up gt6 "mirror to ip6gretap"
217}
218
219test_egress_up()
220{
221	test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap"
222	test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap"
223}
224
225test_remote_ip()
226{
227	test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap"
228	test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap"
229}
230
231test_tun_del()
232{
233	test_span_gre_tun_del gt4 gretap "" \
234			      192.0.2.129 192.0.2.130 "mirror to gretap"
235	test_span_gre_tun_del gt6 ip6gretap allow-localremote \
236			      2001:db8:2::1 2001:db8:2::2 "mirror to ip6gretap"
237}
238
239test_route_del()
240{
241	test_span_gre_route_del gt4 $swp3 192.0.2.128/28 "mirror to gretap"
242	test_span_gre_route_del gt6 $swp3 2001:db8:2::/64 "mirror to ip6gretap"
243}
244
245test_all()
246{
247	slow_path_trap_install $swp1 ingress
248	slow_path_trap_install $swp1 egress
249
250	tests_run
251
252	slow_path_trap_uninstall $swp1 egress
253	slow_path_trap_uninstall $swp1 ingress
254}
255
256trap cleanup EXIT
257
258setup_prepare
259setup_wait
260
261tcflags="skip_hw"
262test_all
263
264if ! tc_offload_check; then
265	echo "WARN: Could not test offloaded functionality"
266else
267	tcflags="skip_sw"
268	test_all
269fi
270
271exit $EXIT_STATUS
272