summaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/net/forwarding/gre_multipath_nh_res.sh
blob: 088b65e64d6653d66431a51625e62ced0d4ab468 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# Test traffic distribution when a wECMP route forwards traffic to two GRE
# tunnels.
#
# +-------------------------+
# | H1                      |
# |               $h1 +     |
# |      192.0.2.1/28 |     |
# |  2001:db8:1::1/64 |     |
# +-------------------|-----+
#                     |
# +-------------------|------------------------+
# | SW1               |                        |
# |              $ol1 +                        |
# |      192.0.2.2/28                          |
# |  2001:db8:1::2/64                          |
# |                                            |
# |  + g1a (gre)          + g1b (gre)          |
# |    loc=192.0.2.65       loc=192.0.2.81     |
# |    rem=192.0.2.66 --.   rem=192.0.2.82 --. |
# |    tos=inherit      |   tos=inherit      | |
# |  .------------------'                    | |
# |  |                    .------------------' |
# |  v                    v                    |
# |  + $ul1.111 (vlan)    + $ul1.222 (vlan)    |
# |  | 192.0.2.129/28     | 192.0.2.145/28     |
# |   \                  /                     |
# |    \________________/                      |
# |            |                               |
# |            + $ul1                          |
# +------------|-------------------------------+
#              |
# +------------|-------------------------------+
# | SW2        + $ul2                          |
# |     _______|________                       |
# |    /                \                      |
# |   /                  \                     |
# |  + $ul2.111 (vlan)    + $ul2.222 (vlan)    |
# |  ^ 192.0.2.130/28     ^ 192.0.2.146/28     |
# |  |                    |                    |
# |  |                    '------------------. |
# |  '------------------.                    | |
# |  + g2a (gre)        | + g2b (gre)        | |
# |    loc=192.0.2.66   |   loc=192.0.2.82   | |
# |    rem=192.0.2.65 --'   rem=192.0.2.81 --' |
# |    tos=inherit          tos=inherit        |
# |                                            |
# |              $ol2 +                        |
# |     192.0.2.17/28 |                        |
# |  2001:db8:2::1/64 |                        |
# +-------------------|------------------------+
#                     |
# +-------------------|-----+
# | H2                |     |
# |               $h2 +     |
# |     192.0.2.18/28       |
# |  2001:db8:2::2/64       |
# +-------------------------+

ALL_TESTS="
	ping_ipv4
	ping_ipv6
	multipath_ipv4
	multipath_ipv6
	multipath_ipv6_l4
"

NUM_NETIFS=6
source lib.sh

h1_create()
{
	simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64
	ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2
	ip route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2
}

h1_destroy()
{
	ip route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2
	ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2
	simple_if_fini $h1 192.0.2.1/28
}

sw1_create()
{
	simple_if_init $ol1 192.0.2.2/28 2001:db8:1::2/64
	__simple_if_init $ul1 v$ol1
	vlan_create $ul1 111 v$ol1 192.0.2.129/28
	vlan_create $ul1 222 v$ol1 192.0.2.145/28

	tunnel_create g1a gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1
	__simple_if_init g1a v$ol1 192.0.2.65/32
	ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130

	tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$ol1
	__simple_if_init g1b v$ol1 192.0.2.81/32
	ip route add vrf v$ol1 192.0.2.82/32 via 192.0.2.146

	ip -6 nexthop add id 101 dev g1a
	ip -6 nexthop add id 102 dev g1b
	ip nexthop add id 103 group 101/102 type resilient buckets 512 \
		idle_timer 0

	ip route add vrf v$ol1 192.0.2.16/28 nhid 103
	ip route add vrf v$ol1 2001:db8:2::/64 nhid 103
}

sw1_destroy()
{
	ip route del vrf v$ol1 2001:db8:2::/64
	ip route del vrf v$ol1 192.0.2.16/28

	ip nexthop del id 103
	ip -6 nexthop del id 102
	ip -6 nexthop del id 101

	ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146
	__simple_if_fini g1b 192.0.2.81/32
	tunnel_destroy g1b

	ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130
	__simple_if_fini g1a 192.0.2.65/32
	tunnel_destroy g1a

	vlan_destroy $ul1 222
	vlan_destroy $ul1 111
	__simple_if_fini $ul1
	simple_if_fini $ol1 192.0.2.2/28 2001:db8:1::2/64
}

sw2_create()
{
	simple_if_init $ol2 192.0.2.17/28 2001:db8:2::1/64
	__simple_if_init $ul2 v$ol2
	vlan_create $ul2 111 v$ol2 192.0.2.130/28
	vlan_create $ul2 222 v$ol2 192.0.2.146/28

	tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2
	__simple_if_init g2a v$ol2 192.0.2.66/32
	ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129

	tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2
	__simple_if_init g2b v$ol2 192.0.2.82/32
	ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145

	ip -6 nexthop add id 201 dev g2a
	ip -6 nexthop add id 202 dev g2b
	ip nexthop add id 203 group 201/202 type resilient buckets 512 \
		idle_timer 0

	ip route add vrf v$ol2 192.0.2.0/28 nhid 203
	ip route add vrf v$ol2 2001:db8:1::/64 nhid 203

	tc qdisc add dev $ul2 clsact
	tc filter add dev $ul2 ingress pref 111 prot 802.1Q \
	   flower vlan_id 111 action pass
	tc filter add dev $ul2 ingress pref 222 prot 802.1Q \
	   flower vlan_id 222 action pass
}

sw2_destroy()
{
	tc qdisc del dev $ul2 clsact

	ip route del vrf v$ol2 2001:db8:1::/64
	ip route del vrf v$ol2 192.0.2.0/28

	ip nexthop del id 203
	ip -6 nexthop del id 202
	ip -6 nexthop del id 201

	ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145
	__simple_if_fini g2b 192.0.2.82/32
	tunnel_destroy g2b

	ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129
	__simple_if_fini g2a 192.0.2.66/32
	tunnel_destroy g2a

	vlan_destroy $ul2 222
	vlan_destroy $ul2 111
	__simple_if_fini $ul2
	simple_if_fini $ol2 192.0.2.17/28 2001:db8:2::1/64
}

h2_create()
{
	simple_if_init $h2 192.0.2.18/28 2001:db8:2::2/64
	ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17
	ip route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1
}

h2_destroy()
{
	ip route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1
	ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17
	simple_if_fini $h2 192.0.2.18/28 2001:db8:2::2/64
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	ol1=${NETIFS[p2]}

	ul1=${NETIFS[p3]}
	ul2=${NETIFS[p4]}

	ol2=${NETIFS[p5]}
	h2=${NETIFS[p6]}

	vrf_prepare
	h1_create
	sw1_create
	sw2_create
	h2_create

	forwarding_enable
}

cleanup()
{
	pre_cleanup

	forwarding_restore

	h2_destroy
	sw2_destroy
	sw1_destroy
	h1_destroy
	vrf_cleanup
}

multipath4_test()
{
	local what=$1; shift
	local weight1=$1; shift
	local weight2=$1; shift

	sysctl_set net.ipv4.fib_multipath_hash_policy 1
	ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
		type resilient

	local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t0_222=$(tc_rule_stats_get $ul2 222 ingress)

	ip vrf exec v$h1 \
	   $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \
	       -d 1msec -t udp "sp=1024,dp=0-32768"

	local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t1_222=$(tc_rule_stats_get $ul2 222 ingress)

	local d111=$((t1_111 - t0_111))
	local d222=$((t1_222 - t0_222))
	multipath_eval "$what" $weight1 $weight2 $d111 $d222

	ip nexthop replace id 103 group 101/102 type resilient
	sysctl_restore net.ipv4.fib_multipath_hash_policy
}

multipath6_test()
{
	local what=$1; shift
	local weight1=$1; shift
	local weight2=$1; shift

	sysctl_set net.ipv6.fib_multipath_hash_policy 0
	ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
		type resilient

	local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t0_222=$(tc_rule_stats_get $ul2 222 ingress)

	# Generate 16384 echo requests, each with a random flow label.
	for ((i=0; i < 16384; ++i)); do
		ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
	done

	local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t1_222=$(tc_rule_stats_get $ul2 222 ingress)

	local d111=$((t1_111 - t0_111))
	local d222=$((t1_222 - t0_222))
	multipath_eval "$what" $weight1 $weight2 $d111 $d222

	ip nexthop replace id 103 group 101/102 type resilient
	sysctl_restore net.ipv6.fib_multipath_hash_policy
}

multipath6_l4_test()
{
	local what=$1; shift
	local weight1=$1; shift
	local weight2=$1; shift

	sysctl_set net.ipv6.fib_multipath_hash_policy 1
	ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
		type resilient

	local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t0_222=$(tc_rule_stats_get $ul2 222 ingress)

	ip vrf exec v$h1 \
		$MZ $h1 -6 -q -p 64 -A 2001:db8:1::1 -B 2001:db8:2::2 \
		-d 1msec -t udp "sp=1024,dp=0-32768"

	local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t1_222=$(tc_rule_stats_get $ul2 222 ingress)

	local d111=$((t1_111 - t0_111))
	local d222=$((t1_222 - t0_222))
	multipath_eval "$what" $weight1 $weight2 $d111 $d222

	ip nexthop replace id 103 group 101/102 type resilient
	sysctl_restore net.ipv6.fib_multipath_hash_policy
}

ping_ipv4()
{
	ping_test $h1 192.0.2.18
}

ping_ipv6()
{
	ping6_test $h1 2001:db8:2::2
}

multipath_ipv4()
{
	log_info "Running IPv4 multipath tests"
	multipath4_test "ECMP" 1 1
	multipath4_test "Weighted MP 2:1" 2 1
	multipath4_test "Weighted MP 11:45" 11 45
}

multipath_ipv6()
{
	log_info "Running IPv6 multipath tests"
	multipath6_test "ECMP" 1 1
	multipath6_test "Weighted MP 2:1" 2 1
	multipath6_test "Weighted MP 11:45" 11 45
}

multipath_ipv6_l4()
{
	log_info "Running IPv6 L4 hash multipath tests"
	multipath6_l4_test "ECMP" 1 1
	multipath6_l4_test "Weighted MP 2:1" 2 1
	multipath6_l4_test "Weighted MP 11:45" 11 45
}

trap cleanup EXIT

setup_prepare
setup_wait
tests_run

exit $EXIT_STATUS