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
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# This test is for checking bridge neighbor suppression functionality. The
# topology consists of two bridges (VTEPs) connected using VXLAN. A single
# host is connected to each bridge over multiple VLANs. The test checks that
# ARP/NS messages from the first host are suppressed on the VXLAN port when
# should.
#
# +-----------------------+ +------------------------+
# | h1 | | h2 |
# | | | |
# | + eth0.10 | | + eth0.10 |
# | | 192.0.2.1/28 | | | 192.0.2.2/28 |
# | | 2001:db8:1::1/64 | | | 2001:db8:1::2/64 |
# | | | | | |
# | | + eth0.20 | | | + eth0.20 |
# | \ | 192.0.2.17/28 | | \ | 192.0.2.18/28 |
# | \ | 2001:db8:2::1/64 | | \ | 2001:db8:2::2/64 |
# | \| | | \| |
# | + eth0 | | + eth0 |
# +----|------------------+ +----|-------------------+
# | |
# | |
# +----|-------------------------------+ +----|-------------------------------+
# | + swp1 + vx0 | | + swp1 + vx0 |
# | | | | | | | |
# | | br0 | | | | | |
# | +------------+-----------+ | | +------------+-----------+ |
# | | | | | |
# | | | | | |
# | +---+---+ | | +---+---+ |
# | | | | | | | |
# | | | | | | | |
# | + + | | + + |
# | br0.10 br0.20 | | br0.10 br0.20 |
# | | | |
# | 192.0.2.33 | | 192.0.2.34 |
# | + lo | | + lo |
# | | | |
# | | | |
# | 192.0.2.49/28 | | 192.0.2.50/28 |
# | veth0 +-------+ veth0 |
# | | | |
# | sw1 | | sw2 |
# +------------------------------------+ +------------------------------------+
source lib.sh
ret=0
# All tests in this script. Can be overridden with -t option.
TESTS="
neigh_suppress_arp
neigh_suppress_ns
neigh_vlan_suppress_arp
neigh_vlan_suppress_ns
"
VERBOSE=0
PAUSE_ON_FAIL=no
PAUSE=no
################################################################################
# Utilities
log_test()
{
local rc=$1
local expected=$2
local msg="$3"
if [ ${rc} -eq ${expected} ]; then
printf "TEST: %-60s [ OK ]\n" "${msg}"
nsuccess=$((nsuccess+1))
else
ret=1
nfail=$((nfail+1))
printf "TEST: %-60s [FAIL]\n" "${msg}"
if [ "$VERBOSE" = "1" ]; then
echo " rc=$rc, expected $expected"
fi
if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
echo
echo "hit enter to continue, 'q' to quit"
read a
[ "$a" = "q" ] && exit 1
fi
fi
if [ "${PAUSE}" = "yes" ]; then
echo
echo "hit enter to continue, 'q' to quit"
read a
[ "$a" = "q" ] && exit 1
fi
[ "$VERBOSE" = "1" ] && echo
}
run_cmd()
{
local cmd="$1"
local out
local stderr="2>/dev/null"
if [ "$VERBOSE" = "1" ]; then
printf "COMMAND: $cmd\n"
stderr=
fi
out=$(eval $cmd $stderr)
rc=$?
if [ "$VERBOSE" = "1" -a -n "$out" ]; then
echo " $out"
fi
return $rc
}
tc_check_packets()
{
local ns=$1; shift
local id=$1; shift
local handle=$1; shift
local count=$1; shift
local pkts
sleep 0.1
pkts=$(tc -n $ns -j -s filter show $id \
| jq ".[] | select(.options.handle == $handle) | \
.options.actions[0].stats.packets")
[[ $pkts == $count ]]
}
################################################################################
# Setup
setup_topo_ns()
{
local ns=$1; shift
ip netns exec $ns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
ip netns exec $ns sysctl -qw net.ipv6.conf.default.ignore_routes_with_linkdown=1
ip netns exec $ns sysctl -qw net.ipv6.conf.all.accept_dad=0
ip netns exec $ns sysctl -qw net.ipv6.conf.default.accept_dad=0
}
setup_topo()
{
local ns
setup_ns h1 h2 sw1 sw2
for ns in $h1 $h2 $sw1 $sw2; do
setup_topo_ns $ns
done
ip -n $h1 link add name eth0 type veth peer name swp1 netns $sw1
ip -n $sw1 link add name veth0 type veth peer name veth0 netns $sw2
ip -n $h2 link add name eth0 type veth peer name swp1 netns $sw2
}
setup_host_common()
{
local ns=$1; shift
local v4addr1=$1; shift
local v4addr2=$1; shift
local v6addr1=$1; shift
local v6addr2=$1; shift
ip -n $ns link set dev eth0 up
ip -n $ns link add link eth0 name eth0.10 up type vlan id 10
ip -n $ns link add link eth0 name eth0.20 up type vlan id 20
ip -n $ns address add $v4addr1 dev eth0.10
ip -n $ns address add $v4addr2 dev eth0.20
ip -n $ns address add $v6addr1 dev eth0.10
ip -n $ns address add $v6addr2 dev eth0.20
}
setup_h1()
{
local ns=$h1
local v4addr1=192.0.2.1/28
local v4addr2=192.0.2.17/28
local v6addr1=2001:db8:1::1/64
local v6addr2=2001:db8:2::1/64
setup_host_common $ns $v4addr1 $v4addr2 $v6addr1 $v6addr2
}
setup_h2()
{
local ns=$h2
local v4addr1=192.0.2.2/28
local v4addr2=192.0.2.18/28
local v6addr1=2001:db8:1::2/64
local v6addr2=2001:db8:2::2/64
setup_host_common $ns $v4addr1 $v4addr2 $v6addr1 $v6addr2
}
setup_sw_common()
{
local ns=$1; shift
local local_addr=$1; shift
local remote_addr=$1; shift
local veth_addr=$1; shift
local gw_addr=$1; shift
ip -n $ns address add $local_addr/32 dev lo
ip -n $ns link set dev veth0 up
ip -n $ns address add $veth_addr/28 dev veth0
ip -n $ns route add default via $gw_addr
ip -n $ns link add name br0 up type bridge vlan_filtering 1 \
vlan_default_pvid 0 mcast_snooping 0
ip -n $ns link add link br0 name br0.10 up type vlan id 10
bridge -n $ns vlan add vid 10 dev br0 self
ip -n $ns link add link br0 name br0.20 up type vlan id 20
bridge -n $ns vlan add vid 20 dev br0 self
ip -n $ns link set dev swp1 up master br0
bridge -n $ns vlan add vid 10 dev swp1
bridge -n $ns vlan add vid 20 dev swp1
ip -n $ns link add name vx0 up master br0 type vxlan \
local $local_addr dstport 4789 nolearning external
bridge -n $ns fdb add 00:00:00:00:00:00 dev vx0 self static \
dst $remote_addr src_vni 10010
bridge -n $ns fdb add 00:00:00:00:00:00 dev vx0 self static \
dst $remote_addr src_vni 10020
bridge -n $ns link set dev vx0 vlan_tunnel on learning off
bridge -n $ns vlan add vid 10 dev vx0
bridge -n $ns vlan add vid 10 dev vx0 tunnel_info id 10010
bridge -n $ns vlan add vid 20 dev vx0
bridge -n $ns vlan add vid 20 dev vx0 tunnel_info id 10020
}
setup_sw1()
{
local ns=$sw1
local local_addr=192.0.2.33
local remote_addr=192.0.2.34
local veth_addr=192.0.2.49
local gw_addr=192.0.2.50
setup_sw_common $ns $local_addr $remote_addr $veth_addr $gw_addr
}
setup_sw2()
{
local ns=$sw2
local local_addr=192.0.2.34
local remote_addr=192.0.2.33
local veth_addr=192.0.2.50
local gw_addr=192.0.2.49
setup_sw_common $ns $local_addr $remote_addr $veth_addr $gw_addr
}
setup()
{
set -e
setup_topo
setup_h1
setup_h2
setup_sw1
setup_sw2
sleep 5
set +e
}
cleanup()
{
cleanup_ns $h1 $h2 $sw1 $sw2
}
################################################################################
# Tests
neigh_suppress_arp_common()
{
local vid=$1; shift
local sip=$1; shift
local tip=$1; shift
local h2_mac
echo
echo "Per-port ARP suppression - VLAN $vid"
echo "----------------------------------"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto 0x0806 flower indev swp1 arp_tip $tip arp_sip $sip arp_op request action pass"
# Initial state - check that ARP requests are not suppressed and that
# ARP replies are received.
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 0 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "ARP suppression"
# Enable neighbor suppression and check that nothing changes compared
# to the initial state.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 0 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "ARP suppression"
# Install an FDB entry for the remote host and check that nothing
# changes compared to the initial state.
h2_mac=$(ip -n $h2 -j -p link show eth0.$vid | jq -r '.[]["address"]')
run_cmd "bridge -n $sw1 fdb replace $h2_mac dev vx0 master static vlan $vid"
log_test $? 0 "FDB entry installation"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 0 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "ARP suppression"
# Install a neighbor on the matching SVI interface and check that ARP
# requests are suppressed.
run_cmd "ip -n $sw1 neigh replace $tip lladdr $h2_mac nud permanent dev br0.$vid"
log_test $? 0 "Neighbor entry installation"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 0 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "ARP suppression"
# Take the second host down and check that ARP requests are suppressed
# and that ARP replies are received.
run_cmd "ip -n $h2 link set dev eth0.$vid down"
log_test $? 0 "H2 down"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 0 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "ARP suppression"
run_cmd "ip -n $h2 link set dev eth0.$vid up"
log_test $? 0 "H2 up"
# Disable neighbor suppression and check that ARP requests are no
# longer suppressed.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 0 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 4
log_test $? 0 "ARP suppression"
# Take the second host down and check that ARP requests are not
# suppressed and that ARP replies are not received.
run_cmd "ip -n $h2 link set dev eth0.$vid down"
log_test $? 0 "H2 down"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
log_test $? 1 "arping"
tc_check_packets $sw1 "dev vx0 egress" 101 5
log_test $? 0 "ARP suppression"
}
neigh_suppress_arp()
{
local vid=10
local sip=192.0.2.1
local tip=192.0.2.2
neigh_suppress_arp_common $vid $sip $tip
vid=20
sip=192.0.2.17
tip=192.0.2.18
neigh_suppress_arp_common $vid $sip $tip
}
neigh_suppress_ns_common()
{
local vid=$1; shift
local saddr=$1; shift
local daddr=$1; shift
local maddr=$1; shift
local h2_mac
echo
echo "Per-port NS suppression - VLAN $vid"
echo "---------------------------------"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ipv6 flower indev swp1 ip_proto icmpv6 dst_ip $maddr src_ip $saddr type 135 code 0 action pass"
# Initial state - check that NS messages are not suppressed and that ND
# messages are received.
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 0 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "NS suppression"
# Enable neighbor suppression and check that nothing changes compared
# to the initial state.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 0 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "NS suppression"
# Install an FDB entry for the remote host and check that nothing
# changes compared to the initial state.
h2_mac=$(ip -n $h2 -j -p link show eth0.$vid | jq -r '.[]["address"]')
run_cmd "bridge -n $sw1 fdb replace $h2_mac dev vx0 master static vlan $vid"
log_test $? 0 "FDB entry installation"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 0 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "NS suppression"
# Install a neighbor on the matching SVI interface and check that NS
# messages are suppressed.
run_cmd "ip -n $sw1 neigh replace $daddr lladdr $h2_mac nud permanent dev br0.$vid"
log_test $? 0 "Neighbor entry installation"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 0 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "NS suppression"
# Take the second host down and check that NS messages are suppressed
# and that ND messages are received.
run_cmd "ip -n $h2 link set dev eth0.$vid down"
log_test $? 0 "H2 down"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 0 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "NS suppression"
run_cmd "ip -n $h2 link set dev eth0.$vid up"
log_test $? 0 "H2 up"
# Disable neighbor suppression and check that NS messages are no longer
# suppressed.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 0 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 4
log_test $? 0 "NS suppression"
# Take the second host down and check that NS messages are not
# suppressed and that ND messages are not received.
run_cmd "ip -n $h2 link set dev eth0.$vid down"
log_test $? 0 "H2 down"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
log_test $? 2 "ndisc6"
tc_check_packets $sw1 "dev vx0 egress" 101 5
log_test $? 0 "NS suppression"
}
neigh_suppress_ns()
{
local vid=10
local saddr=2001:db8:1::1
local daddr=2001:db8:1::2
local maddr=ff02::1:ff00:2
neigh_suppress_ns_common $vid $saddr $daddr $maddr
vid=20
saddr=2001:db8:2::1
daddr=2001:db8:2::2
maddr=ff02::1:ff00:2
neigh_suppress_ns_common $vid $saddr $daddr $maddr
}
neigh_vlan_suppress_arp()
{
local vid1=10
local vid2=20
local sip1=192.0.2.1
local sip2=192.0.2.17
local tip1=192.0.2.2
local tip2=192.0.2.18
local h2_mac1
local h2_mac2
echo
echo "Per-{Port, VLAN} ARP suppression"
echo "--------------------------------"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto 0x0806 flower indev swp1 arp_tip $tip1 arp_sip $sip1 arp_op request action pass"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 102 proto 0x0806 flower indev swp1 arp_tip $tip2 arp_sip $sip2 arp_op request action pass"
h2_mac1=$(ip -n $h2 -j -p link show eth0.$vid1 | jq -r '.[]["address"]')
h2_mac2=$(ip -n $h2 -j -p link show eth0.$vid2 | jq -r '.[]["address"]')
run_cmd "bridge -n $sw1 fdb replace $h2_mac1 dev vx0 master static vlan $vid1"
run_cmd "bridge -n $sw1 fdb replace $h2_mac2 dev vx0 master static vlan $vid2"
run_cmd "ip -n $sw1 neigh replace $tip1 lladdr $h2_mac1 nud permanent dev br0.$vid1"
run_cmd "ip -n $sw1 neigh replace $tip2 lladdr $h2_mac2 nud permanent dev br0.$vid2"
# Enable per-{Port, VLAN} neighbor suppression and check that ARP
# requests are not suppressed and that ARP replies are received.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress on\""
log_test $? 0 "\"neigh_vlan_suppress\" is on"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
log_test $? 0 "arping (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
log_test $? 0 "arping (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "ARP suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 1
log_test $? 0 "ARP suppression (VLAN $vid2)"
# Enable neighbor suppression on VLAN 10 and check that only on this
# VLAN ARP requests are suppressed.
run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on (VLAN $vid1)"
run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid2 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid2)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
log_test $? 0 "arping (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
log_test $? 0 "arping (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "ARP suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 2
log_test $? 0 "ARP suppression (VLAN $vid2)"
# Enable neighbor suppression on the port and check that it has no
# effect compared to previous state.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
log_test $? 0 "arping (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
log_test $? 0 "arping (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "ARP suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 3
log_test $? 0 "ARP suppression (VLAN $vid2)"
# Disable neighbor suppression on the port and check that it has no
# effect compared to previous state.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
log_test $? 0 "arping (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
log_test $? 0 "arping (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "ARP suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 4
log_test $? 0 "ARP suppression (VLAN $vid2)"
# Disable neighbor suppression on VLAN 10 and check that ARP requests
# are no longer suppressed on this VLAN.
run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress off"
run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
log_test $? 0 "arping (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
log_test $? 0 "arping (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "ARP suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 5
log_test $? 0 "ARP suppression (VLAN $vid2)"
# Disable per-{Port, VLAN} neighbor suppression, enable neighbor
# suppression on the port and check that on both VLANs ARP requests are
# suppressed.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress off"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress off\""
log_test $? 0 "\"neigh_vlan_suppress\" is off"
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
log_test $? 0 "arping (VLAN $vid1)"
run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
log_test $? 0 "arping (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "ARP suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 5
log_test $? 0 "ARP suppression (VLAN $vid2)"
}
neigh_vlan_suppress_ns()
{
local vid1=10
local vid2=20
local saddr1=2001:db8:1::1
local saddr2=2001:db8:2::1
local daddr1=2001:db8:1::2
local daddr2=2001:db8:2::2
local maddr=ff02::1:ff00:2
local h2_mac1
local h2_mac2
echo
echo "Per-{Port, VLAN} NS suppression"
echo "-------------------------------"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ipv6 flower indev swp1 ip_proto icmpv6 dst_ip $maddr src_ip $saddr1 type 135 code 0 action pass"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 102 proto ipv6 flower indev swp1 ip_proto icmpv6 dst_ip $maddr src_ip $saddr2 type 135 code 0 action pass"
h2_mac1=$(ip -n $h2 -j -p link show eth0.$vid1 | jq -r '.[]["address"]')
h2_mac2=$(ip -n $h2 -j -p link show eth0.$vid2 | jq -r '.[]["address"]')
run_cmd "bridge -n $sw1 fdb replace $h2_mac1 dev vx0 master static vlan $vid1"
run_cmd "bridge -n $sw1 fdb replace $h2_mac2 dev vx0 master static vlan $vid2"
run_cmd "ip -n $sw1 neigh replace $daddr1 lladdr $h2_mac1 nud permanent dev br0.$vid1"
run_cmd "ip -n $sw1 neigh replace $daddr2 lladdr $h2_mac2 nud permanent dev br0.$vid2"
# Enable per-{Port, VLAN} neighbor suppression and check that NS
# messages are not suppressed and that ND messages are received.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress on\""
log_test $? 0 "\"neigh_vlan_suppress\" is on"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
log_test $? 0 "ndisc6 (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
log_test $? 0 "ndisc6 (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "NS suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 1
log_test $? 0 "NS suppression (VLAN $vid2)"
# Enable neighbor suppression on VLAN 10 and check that only on this
# VLAN NS messages are suppressed.
run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on (VLAN $vid1)"
run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid2 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid2)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
log_test $? 0 "ndisc6 (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
log_test $? 0 "ndisc6 (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "NS suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 2
log_test $? 0 "NS suppression (VLAN $vid2)"
# Enable neighbor suppression on the port and check that it has no
# effect compared to previous state.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
log_test $? 0 "ndisc6 (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
log_test $? 0 "ndisc6 (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "NS suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 3
log_test $? 0 "NS suppression (VLAN $vid2)"
# Disable neighbor suppression on the port and check that it has no
# effect compared to previous state.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
log_test $? 0 "ndisc6 (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
log_test $? 0 "ndisc6 (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "NS suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 4
log_test $? 0 "NS suppression (VLAN $vid2)"
# Disable neighbor suppression on VLAN 10 and check that NS messages
# are no longer suppressed on this VLAN.
run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress off"
run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress off\""
log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
log_test $? 0 "ndisc6 (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
log_test $? 0 "ndisc6 (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "NS suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 5
log_test $? 0 "NS suppression (VLAN $vid2)"
# Disable per-{Port, VLAN} neighbor suppression, enable neighbor
# suppression on the port and check that on both VLANs NS messages are
# suppressed.
run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress off"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress off\""
log_test $? 0 "\"neigh_vlan_suppress\" is off"
run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
log_test $? 0 "\"neigh_suppress\" is on"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
log_test $? 0 "ndisc6 (VLAN $vid1)"
run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
log_test $? 0 "ndisc6 (VLAN $vid2)"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "NS suppression (VLAN $vid1)"
tc_check_packets $sw1 "dev vx0 egress" 102 5
log_test $? 0 "NS suppression (VLAN $vid2)"
}
################################################################################
# Usage
usage()
{
cat <<EOF
usage: ${0##*/} OPTS
-t <test> Test(s) to run (default: all)
(options: $TESTS)
-p Pause on fail
-P Pause after each test before cleanup
-v Verbose mode (show commands and output)
EOF
}
################################################################################
# Main
trap cleanup EXIT
while getopts ":t:pPvh" opt; do
case $opt in
t) TESTS=$OPTARG;;
p) PAUSE_ON_FAIL=yes;;
P) PAUSE=yes;;
v) VERBOSE=$(($VERBOSE + 1));;
h) usage; exit 0;;
*) usage; exit 1;;
esac
done
# Make sure we don't pause twice.
[ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no
if [ "$(id -u)" -ne 0 ];then
echo "SKIP: Need root privileges"
exit $ksft_skip;
fi
if [ ! -x "$(command -v ip)" ]; then
echo "SKIP: Could not run test without ip tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v bridge)" ]; then
echo "SKIP: Could not run test without bridge tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v tc)" ]; then
echo "SKIP: Could not run test without tc tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v arping)" ]; then
echo "SKIP: Could not run test without arping tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v ndisc6)" ]; then
echo "SKIP: Could not run test without ndisc6 tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v jq)" ]; then
echo "SKIP: Could not run test without jq tool"
exit $ksft_skip
fi
bridge link help 2>&1 | grep -q "neigh_vlan_suppress"
if [ $? -ne 0 ]; then
echo "SKIP: iproute2 bridge too old, missing per-VLAN neighbor suppression support"
exit $ksft_skip
fi
# Start clean.
cleanup
for t in $TESTS
do
setup; $t; cleanup;
done
if [ "$TESTS" != "none" ]; then
printf "\nTests passed: %3d\n" ${nsuccess}
printf "Tests failed: %3d\n" ${nfail}
fi
exit $ret
|
