summaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/net/fib_nexthops.sh
blob: f9ebeac1e6f20e8fcafba752a916c87d61dfb7ca (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
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
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# ns: me               | ns: peer              | ns: remote
#   2001:db8:91::1     |       2001:db8:91::2  |
#   172.16.1.1         |       172.16.1.2      |
#            veth1 <---|---> veth2             |
#                      |              veth5 <--|--> veth6  172.16.101.1
#            veth3 <---|---> veth4             |           2001:db8:101::1
#   172.16.2.1         |       172.16.2.2      |
#   2001:db8:92::1     |       2001:db8:92::2  |
#
# This test is for checking IPv4 and IPv6 FIB behavior with nexthop
# objects. Device reference counts and network namespace cleanup tested
# by use of network namespace for peer.

ret=0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4

# all tests in this script. Can be overridden with -t option
IPV4_TESTS="ipv4_fcnal ipv4_grp_fcnal ipv4_withv6_fcnal ipv4_fcnal_runtime"
IPV6_TESTS="ipv6_fcnal ipv6_grp_fcnal ipv6_fcnal_runtime"

ALL_TESTS="basic ${IPV4_TESTS} ${IPV6_TESTS}"
TESTS="${ALL_TESTS}"
VERBOSE=0
PAUSE_ON_FAIL=no
PAUSE=no

nsid=100

################################################################################
# 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
}

get_linklocal()
{
	local dev=$1
	local ns
	local addr

	[ -n "$2" ] && ns="-netns $2"
	addr=$(ip $ns -6 -br addr show dev ${dev} | \
	awk '{
		for (i = 3; i <= NF; ++i) {
			if ($i ~ /^fe80/)
				print $i
		}
	}'
	)
	addr=${addr/\/*}

	[ -z "$addr" ] && return 1

	echo $addr

	return 0
}

create_ns()
{
	local n=${1}

	ip netns del ${n} 2>/dev/null

	set -e
	ip netns add ${n}
	ip netns set ${n} $((nsid++))
	ip -netns ${n} addr add 127.0.0.1/8 dev lo
	ip -netns ${n} link set lo up

	ip netns exec ${n} sysctl -qw net.ipv4.ip_forward=1
	ip netns exec ${n} sysctl -qw net.ipv4.fib_multipath_use_neigh=1
	ip netns exec ${n} sysctl -qw net.ipv4.conf.default.ignore_routes_with_linkdown=1
	ip netns exec ${n} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
	ip netns exec ${n} sysctl -qw net.ipv6.conf.all.forwarding=1
	ip netns exec ${n} sysctl -qw net.ipv6.conf.default.forwarding=1
	ip netns exec ${n} sysctl -qw net.ipv6.conf.default.ignore_routes_with_linkdown=1
	ip netns exec ${n} sysctl -qw net.ipv6.conf.all.accept_dad=0
	ip netns exec ${n} sysctl -qw net.ipv6.conf.default.accept_dad=0

	set +e
}

setup()
{
	cleanup

	create_ns me
	create_ns peer
	create_ns remote

	IP="ip -netns me"
	set -e
	$IP li add veth1 type veth peer name veth2
	$IP li set veth1 up
	$IP addr add 172.16.1.1/24 dev veth1
	$IP -6 addr add 2001:db8:91::1/64 dev veth1

	$IP li add veth3 type veth peer name veth4
	$IP li set veth3 up
	$IP addr add 172.16.2.1/24 dev veth3
	$IP -6 addr add 2001:db8:92::1/64 dev veth3

	$IP li set veth2 netns peer up
	ip -netns peer addr add 172.16.1.2/24 dev veth2
	ip -netns peer -6 addr add 2001:db8:91::2/64 dev veth2

	$IP li set veth4 netns peer up
	ip -netns peer addr add 172.16.2.2/24 dev veth4
	ip -netns peer -6 addr add 2001:db8:92::2/64 dev veth4

	ip -netns remote li add veth5 type veth peer name veth6
	ip -netns remote li set veth5 up
	ip -netns remote addr add dev veth5 172.16.101.1/24
	ip -netns remote addr add dev veth5 2001:db8:101::1/64
	ip -netns remote ro add 172.16.0.0/22 via 172.16.101.2
	ip -netns remote -6 ro add 2001:db8:90::/40 via 2001:db8:101::2

	ip -netns remote li set veth6 netns peer up
	ip -netns peer addr add dev veth6 172.16.101.2/24
	ip -netns peer addr add dev veth6 2001:db8:101::2/64
	set +e
}

cleanup()
{
	local ns

	for ns in me peer remote; do
		ip netns del ${ns} 2>/dev/null
	done
}

check_output()
{
	local out="$1"
	local expected="$2"
	local rc=0

	[ "${out}" = "${expected}" ] && return 0

	if [ -z "${out}" ]; then
		if [ "$VERBOSE" = "1" ]; then
			printf "\nNo entry found\n"
			printf "Expected:\n"
			printf "    ${expected}\n"
		fi
		return 1
	fi

	out=$(echo ${out})
	if [ "${out}" != "${expected}" ]; then
		rc=1
		if [ "${VERBOSE}" = "1" ]; then
			printf "    Unexpected entry. Have:\n"
			printf "        ${out}\n"
			printf "    Expected:\n"
			printf "        ${expected}\n\n"
		else
			echo "      WARNING: Unexpected route entry"
		fi
	fi

	return $rc
}

check_nexthop()
{
	local nharg="$1"
	local expected="$2"
	local out

	out=$($IP nexthop ls ${nharg} 2>/dev/null)

	check_output "${out}" "${expected}"
}

check_route()
{
	local pfx="$1"
	local expected="$2"
	local out

	out=$($IP route ls match ${pfx} 2>/dev/null)

	check_output "${out}" "${expected}"
}

check_route6()
{
	local pfx="$1"
	local expected="$2"
	local out

	out=$($IP -6 route ls match ${pfx} 2>/dev/null)

	check_output "${out}" "${expected}"
}

################################################################################
# basic operations (add, delete, replace) on nexthops and nexthop groups
#
# IPv6

ipv6_fcnal()
{
	local rc

	echo
	echo "IPv6"
	echo "----------------------"

	run_cmd "$IP nexthop add id 52 via 2001:db8:91::2 dev veth1"
	rc=$?
	log_test $rc 0 "Create nexthop with id, gw, dev"
	if [ $rc -ne 0 ]; then
		echo "Basic IPv6 create fails; can not continue"
		return 1
	fi

	run_cmd "$IP nexthop get id 52"
	log_test $? 0 "Get nexthop by id"
	check_nexthop "id 52" "id 52 via 2001:db8:91::2 dev veth1 scope link"

	run_cmd "$IP nexthop del id 52"
	log_test $? 0 "Delete nexthop by id"
	check_nexthop "id 52" ""

	#
	# gw, device spec
	#
	# gw validation, no device - fails since dev required
	run_cmd "$IP nexthop add id 52 via 2001:db8:92::3"
	log_test $? 2 "Create nexthop - gw only"

	# gw is not reachable throught given dev
	run_cmd "$IP nexthop add id 53 via 2001:db8:3::3 dev veth1"
	log_test $? 2 "Create nexthop - invalid gw+dev combination"

	# onlink arg overrides gw+dev lookup
	run_cmd "$IP nexthop add id 53 via 2001:db8:3::3 dev veth1 onlink"
	log_test $? 0 "Create nexthop - gw+dev and onlink"

	# admin down should delete nexthops
	set -e
	run_cmd "$IP -6 nexthop add id 55 via 2001:db8:91::3 dev veth1"
	run_cmd "$IP nexthop add id 56 via 2001:db8:91::4 dev veth1"
	run_cmd "$IP nexthop add id 57 via 2001:db8:91::5 dev veth1"
	run_cmd "$IP li set dev veth1 down"
	set +e
	check_nexthop "dev veth1" ""
	log_test $? 0 "Nexthops removed on admin down"
}

ipv6_grp_fcnal()
{
	local rc

	echo
	echo "IPv6 groups functional"
	echo "----------------------"

	# basic functionality: create a nexthop group, default weight
	run_cmd "$IP nexthop add id 61 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP nexthop add id 101 group 61"
	log_test $? 0 "Create nexthop group with single nexthop"

	# get nexthop group
	run_cmd "$IP nexthop get id 101"
	log_test $? 0 "Get nexthop group by id"
	check_nexthop "id 101" "id 101 group 61"

	# delete nexthop group
	run_cmd "$IP nexthop del id 101"
	log_test $? 0 "Delete nexthop group by id"
	check_nexthop "id 101" ""

	$IP nexthop flush >/dev/null 2>&1
	check_nexthop "id 101" ""

	#
	# create group with multiple nexthops - mix of gw and dev only
	#
	run_cmd "$IP nexthop add id 62 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP nexthop add id 63 via 2001:db8:91::3 dev veth1"
	run_cmd "$IP nexthop add id 64 via 2001:db8:91::4 dev veth1"
	run_cmd "$IP nexthop add id 65 dev veth1"
	run_cmd "$IP nexthop add id 102 group 62/63/64/65"
	log_test $? 0 "Nexthop group with multiple nexthops"
	check_nexthop "id 102" "id 102 group 62/63/64/65"

	# Delete nexthop in a group and group is updated
	run_cmd "$IP nexthop del id 63"
	check_nexthop "id 102" "id 102 group 62/64/65"
	log_test $? 0 "Nexthop group updated when entry is deleted"

	# create group with multiple weighted nexthops
	run_cmd "$IP nexthop add id 63 via 2001:db8:91::3 dev veth1"
	run_cmd "$IP nexthop add id 103 group 62/63,2/64,3/65,4"
	log_test $? 0 "Nexthop group with weighted nexthops"
	check_nexthop "id 103" "id 103 group 62/63,2/64,3/65,4"

	# Delete nexthop in a weighted group and group is updated
	run_cmd "$IP nexthop del id 63"
	check_nexthop "id 103" "id 103 group 62/64,3/65,4"
	log_test $? 0 "Weighted nexthop group updated when entry is deleted"

	# admin down - nexthop is removed from group
	run_cmd "$IP li set dev veth1 down"
	check_nexthop "dev veth1" ""
	log_test $? 0 "Nexthops in groups removed on admin down"

	# expect groups to have been deleted as well
	check_nexthop "" ""

	run_cmd "$IP li set dev veth1 up"

	$IP nexthop flush >/dev/null 2>&1

	# group with nexthops using different devices
	set -e
	run_cmd "$IP nexthop add id 62 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP nexthop add id 63 via 2001:db8:91::3 dev veth1"
	run_cmd "$IP nexthop add id 64 via 2001:db8:91::4 dev veth1"
	run_cmd "$IP nexthop add id 65 via 2001:db8:91::5 dev veth1"

	run_cmd "$IP nexthop add id 72 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP nexthop add id 73 via 2001:db8:92::3 dev veth3"
	run_cmd "$IP nexthop add id 74 via 2001:db8:92::4 dev veth3"
	run_cmd "$IP nexthop add id 75 via 2001:db8:92::5 dev veth3"
	set +e

	# multiple groups with same nexthop
	run_cmd "$IP nexthop add id 104 group 62"
	run_cmd "$IP nexthop add id 105 group 62"
	check_nexthop "group" "id 104 group 62 id 105 group 62"
	log_test $? 0 "Multiple groups with same nexthop"

	run_cmd "$IP nexthop flush groups"
	[ $? -ne 0 ] && return 1

	# on admin down of veth1, it should be removed from the group
	run_cmd "$IP nexthop add id 105 group 62/63/72/73/64"
	run_cmd "$IP li set veth1 down"
	check_nexthop "id 105" "id 105 group 72/73"
	log_test $? 0 "Nexthops in group removed on admin down - mixed group"

	run_cmd "$IP nexthop add id 106 group 105/74"
	log_test $? 2 "Nexthop group can not have a group as an entry"

	# a group can have a blackhole entry only if it is the only
	# nexthop in the group. Needed for atomic replace with an
	# actual nexthop group
	run_cmd "$IP -6 nexthop add id 31 blackhole"
	run_cmd "$IP nexthop add id 107 group 31"
	log_test $? 0 "Nexthop group with a blackhole entry"

	run_cmd "$IP nexthop add id 108 group 31/24"
	log_test $? 2 "Nexthop group can not have a blackhole and another nexthop"
}

ipv6_fcnal_runtime()
{
	local rc

	echo
	echo "IPv6 functional runtime"
	echo "-----------------------"

	sleep 5

	#
	# IPv6 - the basics
	#
	run_cmd "$IP nexthop add id 81 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP ro add 2001:db8:101::1/128 nhid 81"
	log_test $? 0 "Route add"

	run_cmd "$IP ro delete 2001:db8:101::1/128 nhid 81"
	log_test $? 0 "Route delete"

	run_cmd "$IP ro add 2001:db8:101::1/128 nhid 81"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 0 "Ping with nexthop"

	run_cmd "$IP nexthop add id 82 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP nexthop add id 122 group 81/82"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 122"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 0 "Ping - multipath"

	#
	# IPv6 with blackhole nexthops
	#
	run_cmd "$IP -6 nexthop add id 83 blackhole"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 83"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 2 "Ping - blackhole"

	run_cmd "$IP nexthop replace id 83 via 2001:db8:91::2 dev veth1"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 0 "Ping - blackhole replaced with gateway"

	run_cmd "$IP -6 nexthop replace id 83 blackhole"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 2 "Ping - gateway replaced by blackhole"

	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 122"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	if [ $? -eq 0 ]; then
		run_cmd "$IP nexthop replace id 122 group 83"
		run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
		log_test $? 2 "Ping - group with blackhole"

		run_cmd "$IP nexthop replace id 122 group 81/82"
		run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
		log_test $? 0 "Ping - group blackhole replaced with gateways"
	else
		log_test 2 0 "Ping - multipath failed"
	fi

	#
	# device only and gw + dev only mix
	#
	run_cmd "$IP -6 nexthop add id 85 dev veth1"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 85"
	log_test $? 0 "IPv6 route with device only nexthop"
	check_route6 "2001:db8:101::1" "2001:db8:101::1 nhid 85 dev veth1 metric 1024 pref medium"

	run_cmd "$IP nexthop add id 123 group 81/85"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 123"
	log_test $? 0 "IPv6 multipath route with nexthop mix - dev only + gw"
	check_route6 "2001:db8:101::1" "2001:db8:101::1 nhid 123 metric 1024 nexthop via 2001:db8:91::2 dev veth1 weight 1 nexthop dev veth1 weight 1 pref medium"

	#
	# IPv6 route with v4 nexthop - not allowed
	#
	run_cmd "$IP ro delete 2001:db8:101::1/128"
	run_cmd "$IP nexthop add id 84 via 172.16.1.1 dev veth1"
	run_cmd "$IP ro add 2001:db8:101::1/128 nhid 84"
	log_test $? 2 "IPv6 route can not have a v4 gateway"

	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 81"
	run_cmd "$IP nexthop replace id 81 via 172.16.1.1 dev veth1"
	log_test $? 2 "Nexthop replace - v6 route, v4 nexthop"

	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 122"
	run_cmd "$IP nexthop replace id 81 via 172.16.1.1 dev veth1"
	log_test $? 2 "Nexthop replace of group entry - v6 route, v4 nexthop"

	$IP nexthop flush >/dev/null 2>&1

	#
	# weird IPv6 cases
	#
	run_cmd "$IP nexthop add id 86 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP ro add 2001:db8:101::1/128 nhid 81"

	# TO-DO:
	# existing route with old nexthop; append route with new nexthop
	# existing route with old nexthop; replace route with new
	# existing route with new nexthop; replace route with old
	# route with src address and using nexthop - not allowed
}

ipv4_fcnal()
{
	local rc

	echo
	echo "IPv4 functional"
	echo "----------------------"

	#
	# basic IPv4 ops - add, get, delete
	#
	run_cmd "$IP nexthop add id 12 via 172.16.1.2 dev veth1"
	rc=$?
	log_test $rc 0 "Create nexthop with id, gw, dev"
	if [ $rc -ne 0 ]; then
		echo "Basic IPv4 create fails; can not continue"
		return 1
	fi

	run_cmd "$IP nexthop get id 12"
	log_test $? 0 "Get nexthop by id"
	check_nexthop "id 12" "id 12 via 172.16.1.2 dev veth1 scope link"

	run_cmd "$IP nexthop del id 12"
	log_test $? 0 "Delete nexthop by id"
	check_nexthop "id 52" ""

	#
	# gw, device spec
	#
	# gw validation, no device - fails since dev is required
	run_cmd "$IP nexthop add id 12 via 172.16.2.3"
	log_test $? 2 "Create nexthop - gw only"

	# gw not reachable through given dev
	run_cmd "$IP nexthop add id 13 via 172.16.3.2 dev veth1"
	log_test $? 2 "Create nexthop - invalid gw+dev combination"

	# onlink flag overrides gw+dev lookup
	run_cmd "$IP nexthop add id 13 via 172.16.3.2 dev veth1 onlink"
	log_test $? 0 "Create nexthop - gw+dev and onlink"

	# admin down should delete nexthops
	set -e
	run_cmd "$IP nexthop add id 15 via 172.16.1.3 dev veth1"
	run_cmd "$IP nexthop add id 16 via 172.16.1.4 dev veth1"
	run_cmd "$IP nexthop add id 17 via 172.16.1.5 dev veth1"
	run_cmd "$IP li set dev veth1 down"
	set +e
	check_nexthop "dev veth1" ""
	log_test $? 0 "Nexthops removed on admin down"
}

ipv4_grp_fcnal()
{
	local rc

	echo
	echo "IPv4 groups functional"
	echo "----------------------"

	# basic functionality: create a nexthop group, default weight
	run_cmd "$IP nexthop add id 11 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 101 group 11"
	log_test $? 0 "Create nexthop group with single nexthop"

	# get nexthop group
	run_cmd "$IP nexthop get id 101"
	log_test $? 0 "Get nexthop group by id"
	check_nexthop "id 101" "id 101 group 11"

	# delete nexthop group
	run_cmd "$IP nexthop del id 101"
	log_test $? 0 "Delete nexthop group by id"
	check_nexthop "id 101" ""

	$IP nexthop flush >/dev/null 2>&1

	#
	# create group with multiple nexthops
	run_cmd "$IP nexthop add id 12 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 13 via 172.16.1.3 dev veth1"
	run_cmd "$IP nexthop add id 14 via 172.16.1.4 dev veth1"
	run_cmd "$IP nexthop add id 15 via 172.16.1.5 dev veth1"
	run_cmd "$IP nexthop add id 102 group 12/13/14/15"
	log_test $? 0 "Nexthop group with multiple nexthops"
	check_nexthop "id 102" "id 102 group 12/13/14/15"

	# Delete nexthop in a group and group is updated
	run_cmd "$IP nexthop del id 13"
	check_nexthop "id 102" "id 102 group 12/14/15"
	log_test $? 0 "Nexthop group updated when entry is deleted"

	# create group with multiple weighted nexthops
	run_cmd "$IP nexthop add id 13 via 172.16.1.3 dev veth1"
	run_cmd "$IP nexthop add id 103 group 12/13,2/14,3/15,4"
	log_test $? 0 "Nexthop group with weighted nexthops"
	check_nexthop "id 103" "id 103 group 12/13,2/14,3/15,4"

	# Delete nexthop in a weighted group and group is updated
	run_cmd "$IP nexthop del id 13"
	check_nexthop "id 103" "id 103 group 12/14,3/15,4"
	log_test $? 0 "Weighted nexthop group updated when entry is deleted"

	# admin down - nexthop is removed from group
	run_cmd "$IP li set dev veth1 down"
	check_nexthop "dev veth1" ""
	log_test $? 0 "Nexthops in groups removed on admin down"

	# expect groups to have been deleted as well
	check_nexthop "" ""

	run_cmd "$IP li set dev veth1 up"

	$IP nexthop flush >/dev/null 2>&1

	# group with nexthops using different devices
	set -e
	run_cmd "$IP nexthop add id 12 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 13 via 172.16.1.3 dev veth1"
	run_cmd "$IP nexthop add id 14 via 172.16.1.4 dev veth1"
	run_cmd "$IP nexthop add id 15 via 172.16.1.5 dev veth1"

	run_cmd "$IP nexthop add id 22 via 172.16.2.2 dev veth3"
	run_cmd "$IP nexthop add id 23 via 172.16.2.3 dev veth3"
	run_cmd "$IP nexthop add id 24 via 172.16.2.4 dev veth3"
	run_cmd "$IP nexthop add id 25 via 172.16.2.5 dev veth3"
	set +e

	# multiple groups with same nexthop
	run_cmd "$IP nexthop add id 104 group 12"
	run_cmd "$IP nexthop add id 105 group 12"
	check_nexthop "group" "id 104 group 12 id 105 group 12"
	log_test $? 0 "Multiple groups with same nexthop"

	run_cmd "$IP nexthop flush groups"
	[ $? -ne 0 ] && return 1

	# on admin down of veth1, it should be removed from the group
	run_cmd "$IP nexthop add id 105 group 12/13/22/23/14"
	run_cmd "$IP li set veth1 down"
	check_nexthop "id 105" "id 105 group 22/23"
	log_test $? 0 "Nexthops in group removed on admin down - mixed group"

	run_cmd "$IP nexthop add id 106 group 105/24"
	log_test $? 2 "Nexthop group can not have a group as an entry"

	# a group can have a blackhole entry only if it is the only
	# nexthop in the group. Needed for atomic replace with an
	# actual nexthop group
	run_cmd "$IP nexthop add id 31 blackhole"
	run_cmd "$IP nexthop add id 107 group 31"
	log_test $? 0 "Nexthop group with a blackhole entry"

	run_cmd "$IP nexthop add id 108 group 31/24"
	log_test $? 2 "Nexthop group can not have a blackhole and another nexthop"
}

ipv4_withv6_fcnal()
{
	local lladdr

	set -e
	lladdr=$(get_linklocal veth2 peer)
	run_cmd "$IP nexthop add id 11 via ${lladdr} dev veth1"
	set +e
	run_cmd "$IP ro add 172.16.101.1/32 nhid 11"
	log_test $? 0 "IPv6 nexthop with IPv4 route"
	check_route "172.16.101.1" "172.16.101.1 nhid 11 via inet6 ${lladdr} dev veth1"

	set -e
	run_cmd "$IP nexthop add id 12 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 101 group 11/12"
	set +e
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 101"
	log_test $? 0 "IPv6 nexthop with IPv4 route"

	check_route "172.16.101.1" "172.16.101.1 nhid 101 nexthop via inet6 ${lladdr} dev veth1 weight 1 nexthop via 172.16.1.2 dev veth1 weight 1"

	run_cmd "$IP ro replace 172.16.101.1/32 via inet6 ${lladdr} dev veth1"
	log_test $? 0 "IPv4 route with IPv6 gateway"
	check_route "172.16.101.1" "172.16.101.1 via inet6 ${lladdr} dev veth1"

	run_cmd "$IP ro replace 172.16.101.1/32 via inet6 2001:db8:50::1 dev veth1"
	log_test $? 2 "IPv4 route with invalid IPv6 gateway"
}

ipv4_fcnal_runtime()
{
	local lladdr
	local rc

	echo
	echo "IPv4 functional runtime"
	echo "-----------------------"

	run_cmd "$IP nexthop add id 21 via 172.16.1.2 dev veth1"
	run_cmd "$IP ro add 172.16.101.1/32 nhid 21"
	log_test $? 0 "Route add"
	check_route "172.16.101.1" "172.16.101.1 nhid 21 via 172.16.1.2 dev veth1"

	run_cmd "$IP ro delete 172.16.101.1/32 nhid 21"
	log_test $? 0 "Route delete"

	#
	# scope mismatch
	#
	run_cmd "$IP nexthop add id 22 via 172.16.1.2 dev veth1"
	run_cmd "$IP ro add 172.16.101.1/32 nhid 22 scope host"
	log_test $? 2 "Route add - scope conflict with nexthop"

	run_cmd "$IP nexthop replace id 22 dev veth3"
	run_cmd "$IP ro add 172.16.101.1/32 nhid 22 scope host"
	run_cmd "$IP nexthop replace id 22 via 172.16.2.2 dev veth3"
	log_test $? 2 "Nexthop replace with invalid scope for existing route"

	#
	# add route with nexthop and check traffic
	#
	run_cmd "$IP nexthop replace id 21 via 172.16.1.2 dev veth1"
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 21"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "Basic ping"

	run_cmd "$IP nexthop replace id 22 via 172.16.2.2 dev veth3"
	run_cmd "$IP nexthop add id 122 group 21/22"
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 122"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "Ping - multipath"

	#
	# IPv4 with blackhole nexthops
	#
	run_cmd "$IP nexthop add id 23 blackhole"
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 23"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 2 "Ping - blackhole"

	run_cmd "$IP nexthop replace id 23 via 172.16.1.2 dev veth1"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "Ping - blackhole replaced with gateway"

	run_cmd "$IP nexthop replace id 23 blackhole"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 2 "Ping - gateway replaced by blackhole"

	run_cmd "$IP ro replace 172.16.101.1/32 nhid 122"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	if [ $? -eq 0 ]; then
		run_cmd "$IP nexthop replace id 122 group 23"
		run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
		log_test $? 2 "Ping - group with blackhole"

		run_cmd "$IP nexthop replace id 122 group 21/22"
		run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
		log_test $? 0 "Ping - group blackhole replaced with gateways"
	else
		log_test 2 0 "Ping - multipath failed"
	fi

	#
	# device only and gw + dev only mix
	#
	run_cmd "$IP nexthop add id 85 dev veth1"
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 85"
	log_test $? 0 "IPv4 route with device only nexthop"
	check_route "172.16.101.1" "172.16.101.1 nhid 85 dev veth1"

	run_cmd "$IP nexthop add id 123 group 21/85"
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 123"
	log_test $? 0 "IPv4 multipath route with nexthop mix - dev only + gw"
	check_route "172.16.101.1" "172.16.101.1 nhid 123 nexthop via 172.16.1.2 dev veth1 weight 1 nexthop dev veth1 weight 1"

	#
	# IPv4 with IPv6
	#
	set -e
	lladdr=$(get_linklocal veth2 peer)
	run_cmd "$IP nexthop add id 24 via ${lladdr} dev veth1"
	set +e
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 24"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "IPv6 nexthop with IPv4 route"

	$IP neigh sh | grep -q "${lladdr} dev veth1"
	if [ $? -eq 1 ]; then
		echo "    WARNING: Neigh entry missing for ${lladdr}"
		$IP neigh sh | grep 'dev veth1'
	fi

	$IP neigh sh | grep -q "172.16.101.1 dev eth1"
	if [ $? -eq 0 ]; then
		echo "    WARNING: Neigh entry exists for 172.16.101.1"
		$IP neigh sh | grep 'dev veth1'
	fi

	set -e
	run_cmd "$IP nexthop add id 25 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 101 group 24/25"
	set +e
	run_cmd "$IP ro replace 172.16.101.1/32 nhid 101"
	log_test $? 0 "IPv4 route with mixed v4-v6 multipath route"

	check_route "172.16.101.1" "172.16.101.1 nhid 101 nexthop via inet6 ${lladdr} dev veth1 weight 1 nexthop via 172.16.1.2 dev veth1 weight 1"

	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "IPv6 nexthop with IPv4 route"

	run_cmd "$IP ro replace 172.16.101.1/32 via inet6 ${lladdr} dev veth1"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "IPv4 route with IPv6 gateway"

	$IP neigh sh | grep -q "${lladdr} dev veth1"
	if [ $? -eq 1 ]; then
		echo "    WARNING: Neigh entry missing for ${lladdr}"
		$IP neigh sh | grep 'dev veth1'
	fi

	$IP neigh sh | grep -q "172.16.101.1 dev eth1"
	if [ $? -eq 0 ]; then
		echo "    WARNING: Neigh entry exists for 172.16.101.1"
		$IP neigh sh | grep 'dev veth1'
	fi

	#
	# MPLS as an example of LWT encap
	#
	run_cmd "$IP nexthop add id 51 encap mpls 101 via 172.16.1.2 dev veth1"
	log_test $? 0 "IPv4 route with MPLS encap"
	check_nexthop "id 51" "id 51 encap mpls 101 via 172.16.1.2 dev veth1 scope link"
	log_test $? 0 "IPv4 route with MPLS encap - check"

	run_cmd "$IP nexthop add id 52 encap mpls 102 via inet6 2001:db8:91::2 dev veth1"
	log_test $? 0 "IPv4 route with MPLS encap and v6 gateway"
	check_nexthop "id 52" "id 52 encap mpls 102 via 2001:db8:91::2 dev veth1 scope link"
	log_test $? 0 "IPv4 route with MPLS encap, v6 gw - check"
}

basic()
{
	echo
	echo "Basic functional tests"
	echo "----------------------"
	run_cmd "$IP nexthop ls"
	log_test $? 0 "List with nothing defined"

	run_cmd "$IP nexthop get id 1"
	log_test $? 2 "Nexthop get on non-existent id"

	# attempt to create nh without a device or gw - fails
	run_cmd "$IP nexthop add id 1"
	log_test $? 2 "Nexthop with no device or gateway"

	# attempt to create nh with down device - fails
	$IP li set veth1 down
	run_cmd "$IP nexthop add id 1 dev veth1"
	log_test $? 2 "Nexthop with down device"

	# create nh with linkdown device - fails
	$IP li set veth1 up
	ip -netns peer li set veth2 down
	run_cmd "$IP nexthop add id 1 dev veth1"
	log_test $? 2 "Nexthop with device that is linkdown"
	ip -netns peer li set veth2 up

	# device only
	run_cmd "$IP nexthop add id 1 dev veth1"
	log_test $? 0 "Nexthop with device only"

	# create nh with duplicate id
	run_cmd "$IP nexthop add id 1 dev veth3"
	log_test $? 2 "Nexthop with duplicate id"

	# blackhole nexthop
	run_cmd "$IP nexthop add id 2 blackhole"
	log_test $? 0 "Blackhole nexthop"

	# blackhole nexthop can not have other specs
	run_cmd "$IP nexthop replace id 2 blackhole dev veth1"
	log_test $? 2 "Blackhole nexthop with other attributes"

	#
	# groups
	#

	run_cmd "$IP nexthop add id 101 group 1"
	log_test $? 0 "Create group"

	run_cmd "$IP nexthop add id 102 group 2"
	log_test $? 0 "Create group with blackhole nexthop"

	# multipath group can not have a blackhole as 1 path
	run_cmd "$IP nexthop add id 103 group 1/2"
	log_test $? 2 "Create multipath group where 1 path is a blackhole"

	# multipath group can not have a member replaced by a blackhole
	run_cmd "$IP nexthop replace id 2 dev veth3"
	run_cmd "$IP nexthop replace id 102 group 1/2"
	run_cmd "$IP nexthop replace id 2 blackhole"
	log_test $? 2 "Multipath group can not have a member replaced by blackhole"

	# attempt to create group with non-existent nexthop
	run_cmd "$IP nexthop add id 103 group 12"
	log_test $? 2 "Create group with non-existent nexthop"

	# attempt to create group with same nexthop
	run_cmd "$IP nexthop add id 103 group 1/1"
	log_test $? 2 "Create group with same nexthop multiple times"

	# replace nexthop with a group - fails
	run_cmd "$IP nexthop replace id 2 group 1"
	log_test $? 2 "Replace nexthop with nexthop group"

	# replace nexthop group with a nexthop - fails
	run_cmd "$IP nexthop replace id 101 dev veth1"
	log_test $? 2 "Replace nexthop group with nexthop"

	# nexthop group with other attributes fail
	run_cmd "$IP nexthop add id 104 group 1 dev veth1"
	log_test $? 2 "Nexthop group and device"

	run_cmd "$IP nexthop add id 104 group 1 blackhole"
	log_test $? 2 "Nexthop group and blackhole"

	$IP nexthop flush >/dev/null 2>&1
}

################################################################################
# usage

usage()
{
	cat <<EOF
usage: ${0##*/} OPTS

        -t <test>   Test(s) to run (default: all)
                    (options: $ALL_TESTS)
        -4          IPv4 tests only
        -6          IPv6 tests only
        -p          Pause on fail
        -P          Pause after each test before cleanup
        -v          verbose mode (show commands and output)

    Runtime test
	-n num	    Number of nexthops to target
	-N    	    Use new style to install routes in DUT

done
EOF
}

################################################################################
# main

while getopts :t:pP46hv o
do
	case $o in
		t) TESTS=$OPTARG;;
		4) TESTS=${IPV4_TESTS};;
		6) TESTS=${IPV6_TESTS};;
		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

ip help 2>&1 | grep -q nexthop
if [ $? -ne 0 ]; then
	echo "SKIP: iproute2 too old, missing nexthop command"
	exit $ksft_skip
fi

out=$(ip nexthop ls 2>&1 | grep -q "Operation not supported")
if [ $? -eq 0 ]; then
	echo "SKIP: kernel lacks nexthop support"
	exit $ksft_skip
fi

for t in $TESTS
do
	case $t in
	none) IP="ip -netns peer"; setup; exit 0;;
	*) setup; $t; cleanup;;
	esac
done

if [ "$TESTS" != "none" ]; then
	printf "\nTests passed: %3d\n" ${nsuccess}
	printf "Tests failed: %3d\n"   ${nfail}
fi

exit $ret