1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 ALL_TESTS="ping_ipv4 ping_ipv6 multipath_test"
5 NUM_NETIFS=8
6 source lib.sh
7
8 h1_create()
9 {
10 vrf_create "vrf-h1"
11 ip link set dev $h1 master vrf-h1
12
13 ip link set dev vrf-h1 up
14 ip link set dev $h1 up
15
16 ip address add 192.0.2.2/24 dev $h1
17 ip address add 2001:db8:1::2/64 dev $h1
18
19 ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
20 ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
21 }
22
23 h1_destroy()
24 {
25 ip route del 2001:db8:2::/64 vrf vrf-h1
26 ip route del 198.51.100.0/24 vrf vrf-h1
27
28 ip address del 2001:db8:1::2/64 dev $h1
29 ip address del 192.0.2.2/24 dev $h1
30
31 ip link set dev $h1 down
32 vrf_destroy "vrf-h1"
33 }
34
35 h2_create()
36 {
37 vrf_create "vrf-h2"
38 ip link set dev $h2 master vrf-h2
39
40 ip link set dev vrf-h2 up
41 ip link set dev $h2 up
42
43 ip address add 198.51.100.2/24 dev $h2
44 ip address add 2001:db8:2::2/64 dev $h2
45
46 ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
47 ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
48 }
49
50 h2_destroy()
51 {
52 ip route del 2001:db8:1::/64 vrf vrf-h2
53 ip route del 192.0.2.0/24 vrf vrf-h2
54
55 ip address del 2001:db8:2::2/64 dev $h2
56 ip address del 198.51.100.2/24 dev $h2
57
58 ip link set dev $h2 down
59 vrf_destroy "vrf-h2"
60 }
61
62 router1_create()
63 {
64 vrf_create "vrf-r1"
65 ip link set dev $rp11 master vrf-r1
66 ip link set dev $rp12 master vrf-r1
67 ip link set dev $rp13 master vrf-r1
68
69 ip link set dev vrf-r1 up
70 ip link set dev $rp11 up
71 ip link set dev $rp12 up
72 ip link set dev $rp13 up
73
74 ip address add 192.0.2.1/24 dev $rp11
75 ip address add 2001:db8:1::1/64 dev $rp11
76
77 ip address add 169.254.2.12/24 dev $rp12
78 ip address add fe80:2::12/64 dev $rp12
79
80 ip address add 169.254.3.13/24 dev $rp13
81 ip address add fe80:3::13/64 dev $rp13
82
83 ip route add 198.51.100.0/24 vrf vrf-r1 \
84 nexthop via 169.254.2.22 dev $rp12 \
85 nexthop via 169.254.3.23 dev $rp13
86 ip route add 2001:db8:2::/64 vrf vrf-r1 \
87 nexthop via fe80:2::22 dev $rp12 \
88 nexthop via fe80:3::23 dev $rp13
89 }
90
91 router1_destroy()
92 {
93 ip route del 2001:db8:2::/64 vrf vrf-r1
94 ip route del 198.51.100.0/24 vrf vrf-r1
95
96 ip address del fe80:3::13/64 dev $rp13
97 ip address del 169.254.3.13/24 dev $rp13
98
99 ip address del fe80:2::12/64 dev $rp12
100 ip address del 169.254.2.12/24 dev $rp12
101
102 ip address del 2001:db8:1::1/64 dev $rp11
103 ip address del 192.0.2.1/24 dev $rp11
104
105 ip link set dev $rp13 down
106 ip link set dev $rp12 down
107 ip link set dev $rp11 down
108
109 vrf_destroy "vrf-r1"
110 }
111
112 router2_create()
113 {
114 vrf_create "vrf-r2"
115 ip link set dev $rp21 master vrf-r2
116 ip link set dev $rp22 master vrf-r2
117 ip link set dev $rp23 master vrf-r2
118
119 ip link set dev vrf-r2 up
120 ip link set dev $rp21 up
121 ip link set dev $rp22 up
122 ip link set dev $rp23 up
123
124 ip address add 198.51.100.1/24 dev $rp21
125 ip address add 2001:db8:2::1/64 dev $rp21
126
127 ip address add 169.254.2.22/24 dev $rp22
128 ip address add fe80:2::22/64 dev $rp22
129
130 ip address add 169.254.3.23/24 dev $rp23
131 ip address add fe80:3::23/64 dev $rp23
132
133 ip route add 192.0.2.0/24 vrf vrf-r2 \
134 nexthop via 169.254.2.12 dev $rp22 \
135 nexthop via 169.254.3.13 dev $rp23
136 ip route add 2001:db8:1::/64 vrf vrf-r2 \
137 nexthop via fe80:2::12 dev $rp22 \
138 nexthop via fe80:3::13 dev $rp23
139 }
140
141 router2_destroy()
142 {
143 ip route del 2001:db8:1::/64 vrf vrf-r2
144 ip route del 192.0.2.0/24 vrf vrf-r2
145
146 ip address del fe80:3::23/64 dev $rp23
147 ip address del 169.254.3.23/24 dev $rp23
148
149 ip address del fe80:2::22/64 dev $rp22
150 ip address del 169.254.2.22/24 dev $rp22
151
152 ip address del 2001:db8:2::1/64 dev $rp21
153 ip address del 198.51.100.1/24 dev $rp21
154
155 ip link set dev $rp23 down
156 ip link set dev $rp22 down
157 ip link set dev $rp21 down
158
159 vrf_destroy "vrf-r2"
160 }
161
162 multipath4_test()
163 {
164 local desc="$1"
165 local weight_rp12=$2
166 local weight_rp13=$3
167 local t0_rp12 t0_rp13 t1_rp12 t1_rp13
168 local packets_rp12 packets_rp13
169
170 # Transmit multiple flows from h1 to h2 and make sure they are
171 # distributed between both multipath links (rp12 and rp13)
172 # according to the configured weights.
173 sysctl_set net.ipv4.fib_multipath_hash_policy 1
174 ip route replace 198.51.100.0/24 vrf vrf-r1 \
175 nexthop via 169.254.2.22 dev $rp12 weight $weight_rp12 \
176 nexthop via 169.254.3.23 dev $rp13 weight $weight_rp13
177
178 t0_rp12=$(link_stats_tx_packets_get $rp12)
179 t0_rp13=$(link_stats_tx_packets_get $rp13)
180
181 ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \
182 -d $MZ_DELAY -t udp "sp=1024,dp=0-32768"
183 sleep 1
184
185 t1_rp12=$(link_stats_tx_packets_get $rp12)
186 t1_rp13=$(link_stats_tx_packets_get $rp13)
187
188 let "packets_rp12 = $t1_rp12 - $t0_rp12"
189 let "packets_rp13 = $t1_rp13 - $t0_rp13"
190 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
191
192 # Restore settings.
193 ip route replace 198.51.100.0/24 vrf vrf-r1 \
194 nexthop via 169.254.2.22 dev $rp12 \
195 nexthop via 169.254.3.23 dev $rp13
196 sysctl_restore net.ipv4.fib_multipath_hash_policy
197 }
198
199 multipath6_test()
200 {
201 local desc="$1"
202 local weight_rp12=$2
203 local weight_rp13=$3
204 local t0_rp12 t0_rp13 t1_rp12 t1_rp13
205 local packets_rp12 packets_rp13
206
207 # Transmit multiple flows from h1 to h2 and make sure they are
208 # distributed between both multipath links (rp12 and rp13)
209 # according to the configured weights.
210 sysctl_set net.ipv6.fib_multipath_hash_policy 1
211
212 ip route replace 2001:db8:2::/64 vrf vrf-r1 \
213 nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
214 nexthop via fe80:3::23 dev $rp13 weight $weight_rp13
215
216 t0_rp12=$(link_stats_tx_packets_get $rp12)
217 t0_rp13=$(link_stats_tx_packets_get $rp13)
218
219 $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
220 -d $MZ_DELAY -t udp "sp=1024,dp=0-32768"
221 sleep 1
222
223 t1_rp12=$(link_stats_tx_packets_get $rp12)
224 t1_rp13=$(link_stats_tx_packets_get $rp13)
225
226 let "packets_rp12 = $t1_rp12 - $t0_rp12"
227 let "packets_rp13 = $t1_rp13 - $t0_rp13"
228 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
229
230 ip route replace 2001:db8:2::/64 vrf vrf-r1 \
231 nexthop via fe80:2::22 dev $rp12 \
232 nexthop via fe80:3::23 dev $rp13
233
234 sysctl_restore net.ipv6.fib_multipath_hash_policy
235 }
236
237 multipath_test()
238 {
239 log_info "Running IPv4 multipath tests"
240 multipath4_test "ECMP" 1 1
241 multipath4_test "Weighted MP 2:1" 2 1
242 multipath4_test "Weighted MP 11:45" 11 45
243
244 log_info "Running IPv6 multipath tests"
245 multipath6_test "ECMP" 1 1
246 multipath6_test "Weighted MP 2:1" 2 1
247 multipath6_test "Weighted MP 11:45" 11 45
248 }
249
250 setup_prepare()
251 {
252 h1=${NETIFS[p1]}
253 rp11=${NETIFS[p2]}
254
255 rp12=${NETIFS[p3]}
256 rp22=${NETIFS[p4]}
257
258 rp13=${NETIFS[p5]}
259 rp23=${NETIFS[p6]}
260
261 rp21=${NETIFS[p7]}
262 h2=${NETIFS[p8]}
263
264 vrf_prepare
265
266 h1_create
267 h2_create
268
269 router1_create
270 router2_create
271
272 forwarding_enable
273 }
274
275 cleanup()
276 {
277 pre_cleanup
278
279 forwarding_restore
280
281 router2_destroy
282 router1_destroy
283
284 h2_destroy
285 h1_destroy
286
287 vrf_cleanup
288 }
289
290 ping_ipv4()
291 {
292 ping_test $h1 198.51.100.2
293 }
294
295 ping_ipv6()
296 {
297 ping6_test $h1 2001:db8:2::2
298 }
299
300 trap cleanup EXIT
301
302 setup_prepare
303 setup_wait
304
305 tests_run
306
307 exit $EXIT_STATUS
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