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 $prot \
77 flower skip_hw ip_ttl 50 action pass
78
79 mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0
80
81 ip link set dev $tundev type $type ttl 50
82 sleep 2
83 mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10
84
85 ip link set dev $tundev type $type ttl 100
86 tc filter del dev $h3 ingress pref 77
87 mirror_uninstall $swp1 ingress
88
89 log_test "$what: TTL change ($tcflags)"
90}
91
92test_span_gre_tun_up()
93{
94 local tundev=$1; shift
95 local what=$1; shift
96
97 RET=0
98
99 ip link set dev $tundev down
100 mirror_install $swp1 ingress $tundev "matchall $tcflags"
101 fail_test_span_gre_dir $tundev ingress
102
103 ip link set dev $tundev up
104
105 quick_test_span_gre_dir $tundev ingress
106 mirror_uninstall $swp1 ingress
107
108 log_test "$what: tunnel down/up ($tcflags)"
109}
110
111test_span_gre_egress_up()
112{
113 local tundev=$1; shift
114 local remote_ip=$1; shift
115 local what=$1; shift
116
117 RET=0
118
119 ip link set dev $swp3 down
120 mirror_install $swp1 ingress $tundev "matchall $tcflags"
121 fail_test_span_gre_dir $tundev ingress
122
123 # After setting the device up, wait for neighbor to get resolved so that
124 # we can expect mirroring to work.
125 ip link set dev $swp3 up
126 setup_wait_dev $swp3
127 ping -c 1 -I $swp3 $remote_ip &>/dev/null
128
129 quick_test_span_gre_dir $tundev ingress
130 mirror_uninstall $swp1 ingress
131
132 log_test "$what: egress down/up ($tcflags)"
133}
134
135test_span_gre_remote_ip()
136{
137 local tundev=$1; shift
138 local type=$1; shift
139 local correct_ip=$1; shift
140 local wrong_ip=$1; shift
141 local what=$1; shift
142
143 RET=0
144
145 ip link set dev $tundev type $type remote $wrong_ip
146 mirror_install $swp1 ingress $tundev "matchall $tcflags"
147 fail_test_span_gre_dir $tundev ingress
148
149 ip link set dev $tundev type $type remote $correct_ip
150 quick_test_span_gre_dir $tundev ingress
151 mirror_uninstall $swp1 ingress
152
153 log_test "$what: remote address change ($tcflags)"
154}
155
156test_span_gre_tun_del()
157{
158 local tundev=$1; shift
159 local type=$1; shift
160 local flags=$1; shift
161 local local_ip=$1; shift
162 local remote_ip=$1; shift
163 local what=$1; shift
164
165 RET=0
166
167 mirror_install $swp1 ingress $tundev "matchall $tcflags"
168 quick_test_span_gre_dir $tundev ingress
169 ip link del dev $tundev
170 fail_test_span_gre_dir $tundev ingress
171
172 tunnel_create $tundev $type $local_ip $remote_ip \
173 ttl 100 tos inherit $flags
174
175 # Recreating the tunnel doesn't reestablish mirroring, so reinstall it
176 # and verify it works for the follow-up tests.
177 mirror_uninstall $swp1 ingress
178 mirror_install $swp1 ingress $tundev "matchall $tcflags"
179 quick_test_span_gre_dir $tundev ingress
180 mirror_uninstall $swp1 ingress
181
182 log_test "$what: tunnel deleted ($tcflags)"
183}
184
185test_span_gre_route_del()
186{
187 local tundev=$1; shift
188 local edev=$1; shift
189 local route=$1; shift
190 local what=$1; shift
191
192 RET=0
193
194 mirror_install $swp1 ingress $tundev "matchall $tcflags"
195 quick_test_span_gre_dir $tundev ingress
196
197 ip route del $route dev $edev
198 fail_test_span_gre_dir $tundev ingress
199
200 ip route add $route dev $edev
201 quick_test_span_gre_dir $tundev ingress
202
203 mirror_uninstall $swp1 ingress
204
205 log_test "$what: underlay route removal ($tcflags)"
206}
207
208test_ttl()
209{
210 test_span_gre_ttl gt4 gretap ip "mirror to gretap"
211 test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap"
212}
213
214test_tun_up()
215{
216 test_span_gre_tun_up gt4 "mirror to gretap"
217 test_span_gre_tun_up gt6 "mirror to ip6gretap"
218}
219
220test_egress_up()
221{
222 test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap"
223 test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap"
224}
225
226test_remote_ip()
227{
228 test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap"
229 test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap"
230}
231
232test_tun_del()
233{
234 test_span_gre_tun_del gt4 gretap "" \
235 192.0.2.129 192.0.2.130 "mirror to gretap"
236 test_span_gre_tun_del gt6 ip6gretap allow-localremote \
237 2001:db8:2::1 2001:db8:2::2 "mirror to ip6gretap"
238}
239
240test_route_del()
241{
242 test_span_gre_route_del gt4 $swp3 192.0.2.128/28 "mirror to gretap"
243 test_span_gre_route_del gt6 $swp3 2001:db8:2::/64 "mirror to ip6gretap"
244}
245
246test_all()
247{
248 slow_path_trap_install $swp1 ingress
249 slow_path_trap_install $swp1 egress
250
251 tests_run
252
253 slow_path_trap_uninstall $swp1 egress
254 slow_path_trap_uninstall $swp1 ingress
255}
256
257trap cleanup EXIT
258
259setup_prepare
260setup_wait
261
262tcflags="skip_hw"
263test_all
264
265if ! tc_offload_check; then
266 echo "WARN: Could not test offloaded functionality"
267else
268 tcflags="skip_sw"
269 test_all
270fi
271
272exit $EXIT_STATUS