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
4ALL_TESTS="ping_ipv4 ping_ipv6 multipath_test"
5NUM_NETIFS=8
6source lib.sh
7
8h1_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
23h1_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
35h2_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
50h2_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
62router1_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
91router1_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
112router2_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
141router2_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
162multipath4_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 $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \
182 -d 1msec -t udp "sp=1024,dp=0-32768"
183
184 t1_rp12=$(link_stats_tx_packets_get $rp12)
185 t1_rp13=$(link_stats_tx_packets_get $rp13)
186
187 let "packets_rp12 = $t1_rp12 - $t0_rp12"
188 let "packets_rp13 = $t1_rp13 - $t0_rp13"
189 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
190
191 # Restore settings.
192 ip route replace 198.51.100.0/24 vrf vrf-r1 \
193 nexthop via 169.254.2.22 dev $rp12 \
194 nexthop via 169.254.3.23 dev $rp13
195 sysctl_restore net.ipv4.fib_multipath_hash_policy
196}
197
198multipath6_l4_test()
199{
200 local desc="$1"
201 local weight_rp12=$2
202 local weight_rp13=$3
203 local t0_rp12 t0_rp13 t1_rp12 t1_rp13
204 local packets_rp12 packets_rp13
205
206 # Transmit multiple flows from h1 to h2 and make sure they are
207 # distributed between both multipath links (rp12 and rp13)
208 # according to the configured weights.
209 sysctl_set net.ipv6.fib_multipath_hash_policy 1
210
211 ip route replace 2001:db8:2::/64 vrf vrf-r1 \
212 nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
213 nexthop via fe80:3::23 dev $rp13 weight $weight_rp13
214
215 t0_rp12=$(link_stats_tx_packets_get $rp12)
216 t0_rp13=$(link_stats_tx_packets_get $rp13)
217
218 $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
219 -d 1msec -t udp "sp=1024,dp=0-32768"
220
221 t1_rp12=$(link_stats_tx_packets_get $rp12)
222 t1_rp13=$(link_stats_tx_packets_get $rp13)
223
224 let "packets_rp12 = $t1_rp12 - $t0_rp12"
225 let "packets_rp13 = $t1_rp13 - $t0_rp13"
226 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
227
228 ip route replace 2001:db8:2::/64 vrf vrf-r1 \
229 nexthop via fe80:2::22 dev $rp12 \
230 nexthop via fe80:3::23 dev $rp13
231
232 sysctl_restore net.ipv6.fib_multipath_hash_policy
233}
234
235multipath6_test()
236{
237 local desc="$1"
238 local weight_rp12=$2
239 local weight_rp13=$3
240 local t0_rp12 t0_rp13 t1_rp12 t1_rp13
241 local packets_rp12 packets_rp13
242
243 ip route replace 2001:db8:2::/64 vrf vrf-r1 \
244 nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
245 nexthop via fe80:3::23 dev $rp13 weight $weight_rp13
246
247 t0_rp12=$(link_stats_tx_packets_get $rp12)
248 t0_rp13=$(link_stats_tx_packets_get $rp13)
249
250 # Generate 16384 echo requests, each with a random flow label.
251 for _ in $(seq 1 16384); do
252 ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
253 done
254
255 t1_rp12=$(link_stats_tx_packets_get $rp12)
256 t1_rp13=$(link_stats_tx_packets_get $rp13)
257
258 let "packets_rp12 = $t1_rp12 - $t0_rp12"
259 let "packets_rp13 = $t1_rp13 - $t0_rp13"
260 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
261
262 ip route replace 2001:db8:2::/64 vrf vrf-r1 \
263 nexthop via fe80:2::22 dev $rp12 \
264 nexthop via fe80:3::23 dev $rp13
265}
266
267multipath_test()
268{
269 log_info "Running IPv4 multipath tests"
270 multipath4_test "ECMP" 1 1
271 multipath4_test "Weighted MP 2:1" 2 1
272 multipath4_test "Weighted MP 11:45" 11 45
273
274 log_info "Running IPv6 multipath tests"
275 multipath6_test "ECMP" 1 1
276 multipath6_test "Weighted MP 2:1" 2 1
277 multipath6_test "Weighted MP 11:45" 11 45
278
279 log_info "Running IPv6 L4 hash multipath tests"
280 multipath6_l4_test "ECMP" 1 1
281 multipath6_l4_test "Weighted MP 2:1" 2 1
282 multipath6_l4_test "Weighted MP 11:45" 11 45
283}
284
285setup_prepare()
286{
287 h1=${NETIFS[p1]}
288 rp11=${NETIFS[p2]}
289
290 rp12=${NETIFS[p3]}
291 rp22=${NETIFS[p4]}
292
293 rp13=${NETIFS[p5]}
294 rp23=${NETIFS[p6]}
295
296 rp21=${NETIFS[p7]}
297 h2=${NETIFS[p8]}
298
299 vrf_prepare
300
301 h1_create
302 h2_create
303
304 router1_create
305 router2_create
306
307 forwarding_enable
308}
309
310cleanup()
311{
312 pre_cleanup
313
314 forwarding_restore
315
316 router2_destroy
317 router1_destroy
318
319 h2_destroy
320 h1_destroy
321
322 vrf_cleanup
323}
324
325ping_ipv4()
326{
327 ping_test $h1 198.51.100.2
328}
329
330ping_ipv6()
331{
332 ping6_test $h1 2001:db8:2::2
333}
334
335trap cleanup EXIT
336
337setup_prepare
338setup_wait
339
340tests_run
341
342exit $EXIT_STATUS