Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 while true; do
126 ip neigh sh dev $swp3 $remote_ip nud reachable |
127 grep -q ^
128 if [[ $? -ne 0 ]]; then
129 sleep 1
130 else
131 break
132 fi
133 done
134
135 quick_test_span_gre_dir $tundev ingress
136 mirror_uninstall $swp1 ingress
137
138 log_test "$what: egress down/up ($tcflags)"
139}
140
141test_span_gre_remote_ip()
142{
143 local tundev=$1; shift
144 local type=$1; shift
145 local correct_ip=$1; shift
146 local wrong_ip=$1; shift
147 local what=$1; shift
148
149 RET=0
150
151 ip link set dev $tundev type $type remote $wrong_ip
152 mirror_install $swp1 ingress $tundev "matchall $tcflags"
153 fail_test_span_gre_dir $tundev ingress
154
155 ip link set dev $tundev type $type remote $correct_ip
156 quick_test_span_gre_dir $tundev ingress
157 mirror_uninstall $swp1 ingress
158
159 log_test "$what: remote address change ($tcflags)"
160}
161
162test_span_gre_tun_del()
163{
164 local tundev=$1; shift
165 local type=$1; shift
166 local flags=$1; shift
167 local local_ip=$1; shift
168 local remote_ip=$1; shift
169 local what=$1; shift
170
171 RET=0
172
173 mirror_install $swp1 ingress $tundev "matchall $tcflags"
174 quick_test_span_gre_dir $tundev ingress
175 ip link del dev $tundev
176 fail_test_span_gre_dir $tundev ingress
177
178 tunnel_create $tundev $type $local_ip $remote_ip \
179 ttl 100 tos inherit $flags
180
181 # Recreating the tunnel doesn't reestablish mirroring, so reinstall it
182 # and verify it works for the follow-up tests.
183 mirror_uninstall $swp1 ingress
184 mirror_install $swp1 ingress $tundev "matchall $tcflags"
185 quick_test_span_gre_dir $tundev ingress
186 mirror_uninstall $swp1 ingress
187
188 log_test "$what: tunnel deleted ($tcflags)"
189}
190
191test_span_gre_route_del()
192{
193 local tundev=$1; shift
194 local edev=$1; shift
195 local route=$1; shift
196 local what=$1; shift
197
198 RET=0
199
200 mirror_install $swp1 ingress $tundev "matchall $tcflags"
201 quick_test_span_gre_dir $tundev ingress
202
203 ip route del $route dev $edev
204 fail_test_span_gre_dir $tundev ingress
205
206 ip route add $route dev $edev
207 quick_test_span_gre_dir $tundev ingress
208
209 mirror_uninstall $swp1 ingress
210
211 log_test "$what: underlay route removal ($tcflags)"
212}
213
214test_ttl()
215{
216 test_span_gre_ttl gt4 gretap ip "mirror to gretap"
217 test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap"
218}
219
220test_tun_up()
221{
222 test_span_gre_tun_up gt4 "mirror to gretap"
223 test_span_gre_tun_up gt6 "mirror to ip6gretap"
224}
225
226test_egress_up()
227{
228 test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap"
229 test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap"
230}
231
232test_remote_ip()
233{
234 test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap"
235 test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap"
236}
237
238test_tun_del()
239{
240 test_span_gre_tun_del gt4 gretap "" \
241 192.0.2.129 192.0.2.130 "mirror to gretap"
242 test_span_gre_tun_del gt6 ip6gretap allow-localremote \
243 2001:db8:2::1 2001:db8:2::2 "mirror to ip6gretap"
244}
245
246test_route_del()
247{
248 test_span_gre_route_del gt4 $swp3 192.0.2.128/28 "mirror to gretap"
249 test_span_gre_route_del gt6 $swp3 2001:db8:2::/64 "mirror to ip6gretap"
250}
251
252test_all()
253{
254 slow_path_trap_install $swp1 ingress
255 slow_path_trap_install $swp1 egress
256
257 tests_run
258
259 slow_path_trap_uninstall $swp1 egress
260 slow_path_trap_uninstall $swp1 ingress
261}
262
263trap cleanup EXIT
264
265setup_prepare
266setup_wait
267
268tcflags="skip_hw"
269test_all
270
271if ! tc_offload_check; then
272 echo "WARN: Could not test offloaded functionality"
273else
274 tcflags="skip_sw"
275 test_all
276fi
277
278exit $EXIT_STATUS