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drm/atomic-helper: document drm_atomic_helper_check() restrictions
[drm/drm-misc.git] / tools / testing / selftests / net / forwarding / gre_custom_multipath_hash.sh
blobdda11a4a9450a8450abb73e2bbabf735f48434dc
1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # Test traffic distribution when there are multiple paths between an IPv4 GRE
5 # tunnel. The tunnel carries IPv4 and IPv6 traffic between multiple hosts.
6 # Multiple routes are in the underlay network. With the default multipath
7 # policy, SW2 will only look at the outer IP addresses, hence only a single
8 # route would be used.
9 #
10 # +--------------------------------+
11 # | H1 |
12 # | $h1 + |
13 # | 198.51.100.{2-253}/24 | |
14 # | 2001:db8:1::{2-fd}/64 | |
15 # +-------------------------|------+
16 # |
17 # +-------------------------|------------------+
18 # | SW1 | |
19 # | $ol1 + |
20 # | 198.51.100.1/24 |
21 # | 2001:db8:1::1/64 |
22 # | |
23 # | + g1 (gre) |
24 # | loc=192.0.2.1 |
25 # | rem=192.0.2.2 --. |
26 # | tos=inherit | |
27 # | v |
28 # | + $ul1 |
29 # | | 192.0.2.17/28 |
30 # +---------------------|----------------------+
31 # |
32 # +---------------------|----------------------+
33 # | SW2 | |
34 # | $ul21 + |
35 # | 192.0.2.18/28 | |
36 # | | |
37 # ! __________________+___ |
38 # | / \ |
39 # | | | |
40 # | + $ul22.111 (vlan) + $ul22.222 (vlan) |
41 # | | 192.0.2.33/28 | 192.0.2.49/28 |
42 # | | | |
43 # +--|----------------------|------------------+
44 # | |
45 # +--|----------------------|------------------+
46 # | | | |
47 # | + $ul32.111 (vlan) + $ul32.222 (vlan) |
48 # | | 192.0.2.34/28 | 192.0.2.50/28 |
49 # | | | |
50 # | \__________________+___/ |
51 # | | |
52 # | | |
53 # | $ul31 + |
54 # | 192.0.2.65/28 | SW3 |
55 # +---------------------|----------------------+
56 # |
57 # +---------------------|----------------------+
58 # | + $ul4 |
59 # | ^ 192.0.2.66/28 |
60 # | | |
61 # | + g2 (gre) | |
62 # | loc=192.0.2.2 | |
63 # | rem=192.0.2.1 --' |
64 # | tos=inherit |
65 # | |
66 # | $ol4 + |
67 # | 203.0.113.1/24 | |
68 # | 2001:db8:2::1/64 | SW4 |
69 # +-------------------------|------------------+
70 # |
71 # +-------------------------|------+
72 # | | |
73 # | $h2 + |
74 # | 203.0.113.{2-253}/24 |
75 # | 2001:db8:2::{2-fd}/64 H2 |
76 # +--------------------------------+
77
78 ALL_TESTS="
79 ping_ipv4
80 ping_ipv6
81 custom_hash
82 "
83
84 NUM_NETIFS=10
85 source lib.sh
86
87 h1_create()
88 {
89 simple_if_init $h1 198.51.100.2/24 2001:db8:1::2/64
90 ip route add vrf v$h1 default via 198.51.100.1 dev $h1
91 ip -6 route add vrf v$h1 default via 2001:db8:1::1 dev $h1
92 }
93
94 h1_destroy()
95 {
96 ip -6 route del vrf v$h1 default
97 ip route del vrf v$h1 default
98 simple_if_fini $h1 198.51.100.2/24 2001:db8:1::2/64
99 }
100
101 sw1_create()
102 {
103 simple_if_init $ol1 198.51.100.1/24 2001:db8:1::1/64
104 __simple_if_init $ul1 v$ol1 192.0.2.17/28
105
106 tunnel_create g1 gre 192.0.2.1 192.0.2.2 tos inherit dev v$ol1
107 __simple_if_init g1 v$ol1 192.0.2.1/32
108 ip route add vrf v$ol1 192.0.2.2/32 via 192.0.2.18
109
110 ip route add vrf v$ol1 203.0.113.0/24 dev g1
111 ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1
112 }
113
114 sw1_destroy()
115 {
116 ip -6 route del vrf v$ol1 2001:db8:2::/64
117 ip route del vrf v$ol1 203.0.113.0/24
118
119 ip route del vrf v$ol1 192.0.2.2/32
120 __simple_if_fini g1 192.0.2.1/32
121 tunnel_destroy g1
122
123 __simple_if_fini $ul1 192.0.2.17/28
124 simple_if_fini $ol1 198.51.100.1/24 2001:db8:1::1/64
125 }
126
127 sw2_create()
128 {
129 simple_if_init $ul21 192.0.2.18/28
130 __simple_if_init $ul22 v$ul21
131 vlan_create $ul22 111 v$ul21 192.0.2.33/28
132 vlan_create $ul22 222 v$ul21 192.0.2.49/28
133
134 ip route add vrf v$ul21 192.0.2.1/32 via 192.0.2.17
135 ip route add vrf v$ul21 192.0.2.2/32 \
136 nexthop via 192.0.2.34 \
137 nexthop via 192.0.2.50
138 }
139
140 sw2_destroy()
141 {
142 ip route del vrf v$ul21 192.0.2.2/32
143 ip route del vrf v$ul21 192.0.2.1/32
144
145 vlan_destroy $ul22 222
146 vlan_destroy $ul22 111
147 __simple_if_fini $ul22
148 simple_if_fini $ul21 192.0.2.18/28
149 }
150
151 sw3_create()
152 {
153 simple_if_init $ul31 192.0.2.65/28
154 __simple_if_init $ul32 v$ul31
155 vlan_create $ul32 111 v$ul31 192.0.2.34/28
156 vlan_create $ul32 222 v$ul31 192.0.2.50/28
157
158 ip route add vrf v$ul31 192.0.2.2/32 via 192.0.2.66
159 ip route add vrf v$ul31 192.0.2.1/32 \
160 nexthop via 192.0.2.33 \
161 nexthop via 192.0.2.49
162
163 tc qdisc add dev $ul32 clsact
164 tc filter add dev $ul32 ingress pref 111 prot 802.1Q \
165 flower vlan_id 111 action pass
166 tc filter add dev $ul32 ingress pref 222 prot 802.1Q \
167 flower vlan_id 222 action pass
168 }
169
170 sw3_destroy()
171 {
172 tc qdisc del dev $ul32 clsact
173
174 ip route del vrf v$ul31 192.0.2.1/32
175 ip route del vrf v$ul31 192.0.2.2/32
176
177 vlan_destroy $ul32 222
178 vlan_destroy $ul32 111
179 __simple_if_fini $ul32
180 simple_if_fini $ul31 192.0.2.65/28
181 }
182
183 sw4_create()
184 {
185 simple_if_init $ol4 203.0.113.1/24 2001:db8:2::1/64
186 __simple_if_init $ul4 v$ol4 192.0.2.66/28
187
188 tunnel_create g2 gre 192.0.2.2 192.0.2.1 tos inherit dev v$ol4
189 __simple_if_init g2 v$ol4 192.0.2.2/32
190 ip route add vrf v$ol4 192.0.2.1/32 via 192.0.2.65
191
192 ip route add vrf v$ol4 198.51.100.0/24 dev g2
193 ip -6 route add vrf v$ol4 2001:db8:1::/64 dev g2
194 }
195
196 sw4_destroy()
197 {
198 ip -6 route del vrf v$ol4 2001:db8:1::/64
199 ip route del vrf v$ol4 198.51.100.0/24
200
201 ip route del vrf v$ol4 192.0.2.1/32
202 __simple_if_fini g2 192.0.2.2/32
203 tunnel_destroy g2
204
205 __simple_if_fini $ul4 192.0.2.66/28
206 simple_if_fini $ol4 203.0.113.1/24 2001:db8:2::1/64
207 }
208
209 h2_create()
210 {
211 simple_if_init $h2 203.0.113.2/24 2001:db8:2::2/64
212 ip route add vrf v$h2 default via 203.0.113.1 dev $h2
213 ip -6 route add vrf v$h2 default via 2001:db8:2::1 dev $h2
214 }
215
216 h2_destroy()
217 {
218 ip -6 route del vrf v$h2 default
219 ip route del vrf v$h2 default
220 simple_if_fini $h2 203.0.113.2/24 2001:db8:2::2/64
221 }
222
223 setup_prepare()
224 {
225 h1=${NETIFS[p1]}
226
227 ol1=${NETIFS[p2]}
228 ul1=${NETIFS[p3]}
229
230 ul21=${NETIFS[p4]}
231 ul22=${NETIFS[p5]}
232
233 ul32=${NETIFS[p6]}
234 ul31=${NETIFS[p7]}
235
236 ul4=${NETIFS[p8]}
237 ol4=${NETIFS[p9]}
238
239 h2=${NETIFS[p10]}
240
241 vrf_prepare
242 h1_create
243 sw1_create
244 sw2_create
245 sw3_create
246 sw4_create
247 h2_create
248
249 forwarding_enable
250 }
251
252 cleanup()
253 {
254 pre_cleanup
255
256 forwarding_restore
257
258 h2_destroy
259 sw4_destroy
260 sw3_destroy
261 sw2_destroy
262 sw1_destroy
263 h1_destroy
264 vrf_cleanup
265 }
266
267 ping_ipv4()
268 {
269 ping_test $h1 203.0.113.2
270 }
271
272 ping_ipv6()
273 {
274 ping6_test $h1 2001:db8:2::2
275 }
276
277 send_src_ipv4()
278 {
279 ip vrf exec v$h1 $MZ $h1 -q -p 64 \
280 -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
281 -d $MZ_DELAY -c 50 -t udp "sp=20000,dp=30000"
282 }
283
284 send_dst_ipv4()
285 {
286 ip vrf exec v$h1 $MZ $h1 -q -p 64 \
287 -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
288 -d $MZ_DELAY -c 50 -t udp "sp=20000,dp=30000"
289 }
290
291 send_src_udp4()
292 {
293 ip vrf exec v$h1 $MZ $h1 -q -p 64 \
294 -A 198.51.100.2 -B 203.0.113.2 \
295 -d $MZ_DELAY -t udp "sp=0-32768,dp=30000"
296 }
297
298 send_dst_udp4()
299 {
300 ip vrf exec v$h1 $MZ $h1 -q -p 64 \
301 -A 198.51.100.2 -B 203.0.113.2 \
302 -d $MZ_DELAY -t udp "sp=20000,dp=0-32768"
303 }
304
305 send_src_ipv6()
306 {
307 ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
308 -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:2::2 \
309 -d $MZ_DELAY -c 50 -t udp "sp=20000,dp=30000"
310 }
311
312 send_dst_ipv6()
313 {
314 ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
315 -A 2001:db8:1::2 -B "2001:db8:2::2-2001:db8:2::fd" \
316 -d $MZ_DELAY -c 50 -t udp "sp=20000,dp=30000"
317 }
318
319 send_flowlabel()
320 {
321 # Generate 16384 echo requests, each with a random flow label.
322 ip vrf exec v$h1 sh -c \
323 "for _ in {1..16384}; do \
324 $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1; \
325 done"
326 }
327
328 send_src_udp6()
329 {
330 ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
331 -A 2001:db8:1::2 -B 2001:db8:2::2 \
332 -d $MZ_DELAY -t udp "sp=0-32768,dp=30000"
333 }
334
335 send_dst_udp6()
336 {
337 ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
338 -A 2001:db8:1::2 -B 2001:db8:2::2 \
339 -d $MZ_DELAY -t udp "sp=20000,dp=0-32768"
340 }
341
342 custom_hash_test()
343 {
344 local field="$1"; shift
345 local balanced="$1"; shift
346 local send_flows="$@"
347
348 RET=0
349
350 local t0_111=$(tc_rule_stats_get $ul32 111 ingress)
351 local t0_222=$(tc_rule_stats_get $ul32 222 ingress)
352
353 $send_flows
354
355 local t1_111=$(tc_rule_stats_get $ul32 111 ingress)
356 local t1_222=$(tc_rule_stats_get $ul32 222 ingress)
357
358 local d111=$((t1_111 - t0_111))
359 local d222=$((t1_222 - t0_222))
360
361 local diff=$((d222 - d111))
362 local sum=$((d111 + d222))
363
364 local pct=$(echo "$diff / $sum * 100" | bc -l)
365 local is_balanced=$(echo "-20 <= $pct && $pct <= 20" | bc)
366
367 [[ ( $is_balanced -eq 1 && $balanced == "balanced" ) ||
368 ( $is_balanced -eq 0 && $balanced == "unbalanced" ) ]]
369 check_err $? "Expected traffic to be $balanced, but it is not"
370
371 log_test "Multipath hash field: $field ($balanced)"
372 log_info "Packets sent on path1 / path2: $d111 / $d222"
373 }
374
375 custom_hash_v4()
376 {
377 log_info "Running IPv4 overlay custom multipath hash tests"
378
379 # Prevent the neighbour table from overflowing, as different neighbour
380 # entries will be created on $ol4 when using different destination IPs.
381 sysctl_set net.ipv4.neigh.default.gc_thresh1 1024
382 sysctl_set net.ipv4.neigh.default.gc_thresh2 1024
383 sysctl_set net.ipv4.neigh.default.gc_thresh3 1024
384
385 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0040
386 custom_hash_test "Inner source IP" "balanced" send_src_ipv4
387 custom_hash_test "Inner source IP" "unbalanced" send_dst_ipv4
388
389 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0080
390 custom_hash_test "Inner destination IP" "balanced" send_dst_ipv4
391 custom_hash_test "Inner destination IP" "unbalanced" send_src_ipv4
392
393 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0400
394 custom_hash_test "Inner source port" "balanced" send_src_udp4
395 custom_hash_test "Inner source port" "unbalanced" send_dst_udp4
396
397 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0800
398 custom_hash_test "Inner destination port" "balanced" send_dst_udp4
399 custom_hash_test "Inner destination port" "unbalanced" send_src_udp4
400
401 sysctl_restore net.ipv4.neigh.default.gc_thresh3
402 sysctl_restore net.ipv4.neigh.default.gc_thresh2
403 sysctl_restore net.ipv4.neigh.default.gc_thresh1
404 }
405
406 custom_hash_v6()
407 {
408 log_info "Running IPv6 overlay custom multipath hash tests"
409
410 # Prevent the neighbour table from overflowing, as different neighbour
411 # entries will be created on $ol4 when using different destination IPs.
412 sysctl_set net.ipv6.neigh.default.gc_thresh1 1024
413 sysctl_set net.ipv6.neigh.default.gc_thresh2 1024
414 sysctl_set net.ipv6.neigh.default.gc_thresh3 1024
415
416 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0040
417 custom_hash_test "Inner source IP" "balanced" send_src_ipv6
418 custom_hash_test "Inner source IP" "unbalanced" send_dst_ipv6
419
420 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0080
421 custom_hash_test "Inner destination IP" "balanced" send_dst_ipv6
422 custom_hash_test "Inner destination IP" "unbalanced" send_src_ipv6
423
424 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0200
425 custom_hash_test "Inner flowlabel" "balanced" send_flowlabel
426 custom_hash_test "Inner flowlabel" "unbalanced" send_src_ipv6
427
428 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0400
429 custom_hash_test "Inner source port" "balanced" send_src_udp6
430 custom_hash_test "Inner source port" "unbalanced" send_dst_udp6
431
432 sysctl_set net.ipv4.fib_multipath_hash_fields 0x0800
433 custom_hash_test "Inner destination port" "balanced" send_dst_udp6
434 custom_hash_test "Inner destination port" "unbalanced" send_src_udp6
435
436 sysctl_restore net.ipv6.neigh.default.gc_thresh3
437 sysctl_restore net.ipv6.neigh.default.gc_thresh2
438 sysctl_restore net.ipv6.neigh.default.gc_thresh1
439 }
440
441 custom_hash()
442 {
443 # Test that when the hash policy is set to custom, traffic is
444 # distributed only according to the fields set in the
445 # fib_multipath_hash_fields sysctl.
446 #
447 # Each time set a different field and make sure traffic is only
448 # distributed when the field is changed in the packet stream.
449
450 sysctl_set net.ipv4.fib_multipath_hash_policy 3
451
452 custom_hash_v4
453 custom_hash_v6
454
455 sysctl_restore net.ipv4.fib_multipath_hash_policy
456 }
457
458 trap cleanup EXIT
459
460 setup_prepare
461 setup_wait
462 tests_run
463
464 exit $EXIT_STATUS
Kernel DRM miscellaneous fixes and cross-tree changes