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