summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/net/fib_nexthops.sh
blob: b3bf5319bb0e505b471e6c7798e85962411e920b (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
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
#!/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_res_grp_fcnal
	ipv4_withv6_fcnal
	ipv4_fcnal_runtime
	ipv4_large_grp
	ipv4_large_res_grp
	ipv4_compat_mode
	ipv4_fdb_grp_fcnal
	ipv4_torture
	ipv4_res_torture
"

IPV6_TESTS="
	ipv6_fcnal
	ipv6_grp_fcnal
	ipv6_res_grp_fcnal
	ipv6_fcnal_runtime
	ipv6_large_grp
	ipv6_large_res_grp
	ipv6_compat_mode
	ipv6_fdb_grp_fcnal
	ipv6_torture
	ipv6_res_torture
"

ALL_TESTS="
	basic
	basic_res
	${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"
	BRIDGE="bridge -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 nodad

	$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 nodad

	$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 nodad

	$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 nodad

	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 -6 addr add dev veth5 2001:db8:101::1/64 nodad
	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 -6 addr add dev veth6 2001:db8:101::2/64 nodad
	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_nexthop_bucket()
{
	local nharg="$1"
	local expected="$2"
	local out

	# remove the idle time since we cannot match it
	out=$($IP nexthop bucket ${nharg} \
		| sed s/idle_time\ [0-9.]*\ // 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 | sed -e 's/pref medium//')

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

check_large_grp()
{
	local ipv=$1
	local ecmp=$2
	local grpnum=100
	local nhidstart=100
	local grpidstart=1000
	local iter=0
	local nhidstr=""
	local grpidstr=""
	local grpstr=""
	local ipstr=""

	if [ $ipv -eq 4 ]; then
		ipstr="172.16.1."
	else
		ipstr="2001:db8:91::"
	fi

	#
	# Create $grpnum groups with specified $ecmp and dump them
	#

	# create nexthops with different gateways
	iter=2
	while [ $iter -le $(($ecmp + 1)) ]
	do
		nhidstr="$(($nhidstart + $iter))"
		run_cmd "$IP nexthop add id $nhidstr via $ipstr$iter dev veth1"
		check_nexthop "id $nhidstr" "id $nhidstr via $ipstr$iter dev veth1 scope link"

		if [ $iter -le $ecmp ]; then
			grpstr+="$nhidstr/"
		else
			grpstr+="$nhidstr"
		fi
		((iter++))
	done

	# create duplicate large ecmp groups
	iter=0
	while [ $iter -le $grpnum ]
	do
		grpidstr="$(($grpidstart + $iter))"
		run_cmd "$IP nexthop add id $grpidstr group $grpstr"
		check_nexthop "id $grpidstr" "id $grpidstr group $grpstr"
		((iter++))
	done

	# dump large groups
	run_cmd "$IP nexthop list"
	log_test $? 0 "Dump large (x$ecmp) ecmp groups"
}

check_large_res_grp()
{
	local ipv=$1
	local buckets=$2
	local ipstr=""

	if [ $ipv -eq 4 ]; then
		ipstr="172.16.1.2"
	else
		ipstr="2001:db8:91::2"
	fi

	# create a resilient group with $buckets buckets and dump them
	run_cmd "$IP nexthop add id 100 via $ipstr dev veth1"
	run_cmd "$IP nexthop add id 1000 group 100 type resilient buckets $buckets"
	run_cmd "$IP nexthop bucket list"
	log_test $? 0 "Dump large (x$buckets) nexthop buckets"
}

start_ip_monitor()
{
	local mtype=$1

	# start the monitor in the background
	tmpfile=`mktemp /var/run/nexthoptestXXX`
	mpid=`($IP monitor $mtype > $tmpfile & echo $!) 2>/dev/null`
	sleep 0.2
	echo "$mpid $tmpfile"
}

stop_ip_monitor()
{
	local mpid=$1
	local tmpfile=$2
	local el=$3

	# check the monitor results
	kill $mpid
	lines=`wc -l $tmpfile | cut "-d " -f1`
	test $lines -eq $el
	rc=$?
	rm -rf $tmpfile

	return $rc
}

check_nexthop_fdb_support()
{
	$IP nexthop help 2>&1 | grep -q fdb
	if [ $? -ne 0 ]; then
		echo "SKIP: iproute2 too old, missing fdb nexthop support"
		return $ksft_skip
	fi
}

check_nexthop_res_support()
{
	$IP nexthop help 2>&1 | grep -q resilient
	if [ $? -ne 0 ]; then
		echo "SKIP: iproute2 too old, missing resilient nexthop group support"
		return $ksft_skip
	fi
}

ipv6_fdb_grp_fcnal()
{
	local rc

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

	check_nexthop_fdb_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	# create group with multiple nexthops
	run_cmd "$IP nexthop add id 61 via 2001:db8:91::2 fdb"
	run_cmd "$IP nexthop add id 62 via 2001:db8:91::3 fdb"
	run_cmd "$IP nexthop add id 102 group 61/62 fdb"
	check_nexthop "id 102" "id 102 group 61/62 fdb"
	log_test $? 0 "Fdb Nexthop group with multiple nexthops"

	## get nexthop group
	run_cmd "$IP nexthop get id 102"
	check_nexthop "id 102" "id 102 group 61/62 fdb"
	log_test $? 0 "Get Fdb nexthop group by id"

	# fdb nexthop group can only contain fdb nexthops
	run_cmd "$IP nexthop add id 63 via 2001:db8:91::4"
	run_cmd "$IP nexthop add id 64 via 2001:db8:91::5"
	run_cmd "$IP nexthop add id 103 group 63/64 fdb"
	log_test $? 2 "Fdb Nexthop group with non-fdb nexthops"

	# Non fdb nexthop group can not contain fdb nexthops
	run_cmd "$IP nexthop add id 65 via 2001:db8:91::5 fdb"
	run_cmd "$IP nexthop add id 66 via 2001:db8:91::6 fdb"
	run_cmd "$IP nexthop add id 104 group 65/66"
	log_test $? 2 "Non-Fdb Nexthop group with fdb nexthops"

	# fdb nexthop cannot have blackhole
	run_cmd "$IP nexthop add id 67 blackhole fdb"
	log_test $? 2 "Fdb Nexthop with blackhole"

	# fdb nexthop with oif
	run_cmd "$IP nexthop add id 68 via 2001:db8:91::7 dev veth1 fdb"
	log_test $? 2 "Fdb Nexthop with oif"

	# fdb nexthop with onlink
	run_cmd "$IP nexthop add id 68 via 2001:db8:91::7 onlink fdb"
	log_test $? 2 "Fdb Nexthop with onlink"

	# fdb nexthop with encap
	run_cmd "$IP nexthop add id 69 encap mpls 101 via 2001:db8:91::8 dev veth1 fdb"
	log_test $? 2 "Fdb Nexthop with encap"

	run_cmd "$IP link add name vx10 type vxlan id 1010 local 2001:db8:91::9 remote 2001:db8:91::10 dstport 4789 nolearning noudpcsum tos inherit ttl 100"
	run_cmd "$BRIDGE fdb add 02:02:00:00:00:13 dev vx10 nhid 102 self"
	log_test $? 0 "Fdb mac add with nexthop group"

	## fdb nexthops can only reference nexthop groups and not nexthops
	run_cmd "$BRIDGE fdb add 02:02:00:00:00:14 dev vx10 nhid 61 self"
	log_test $? 255 "Fdb mac add with nexthop"

	run_cmd "$IP -6 ro add 2001:db8:101::1/128 nhid 66"
	log_test $? 2 "Route add with fdb nexthop"

	run_cmd "$IP -6 ro add 2001:db8:101::1/128 nhid 103"
	log_test $? 2 "Route add with fdb nexthop group"

	run_cmd "$IP nexthop del id 61"
	run_cmd "$BRIDGE fdb get to 02:02:00:00:00:13 dev vx10 self"
	log_test $? 0 "Fdb entry after deleting a single nexthop"

	run_cmd "$IP nexthop del id 102"
	log_test $? 0 "Fdb nexthop delete"

	run_cmd "$BRIDGE fdb get to 02:02:00:00:00:13 dev vx10 self"
	log_test $? 254 "Fdb entry after deleting a nexthop group"

	$IP link del dev vx10
}

ipv4_fdb_grp_fcnal()
{
	local rc

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

	check_nexthop_fdb_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	# create group with multiple nexthops
	run_cmd "$IP nexthop add id 12 via 172.16.1.2 fdb"
	run_cmd "$IP nexthop add id 13 via 172.16.1.3 fdb"
	run_cmd "$IP nexthop add id 102 group 12/13 fdb"
	check_nexthop "id 102" "id 102 group 12/13 fdb"
	log_test $? 0 "Fdb Nexthop group with multiple nexthops"

	# get nexthop group
	run_cmd "$IP nexthop get id 102"
	check_nexthop "id 102" "id 102 group 12/13 fdb"
	log_test $? 0 "Get Fdb nexthop group by id"

	# fdb nexthop group can only contain fdb nexthops
	run_cmd "$IP nexthop add id 14 via 172.16.1.2"
	run_cmd "$IP nexthop add id 15 via 172.16.1.3"
	run_cmd "$IP nexthop add id 103 group 14/15 fdb"
	log_test $? 2 "Fdb Nexthop group with non-fdb nexthops"

	# Non fdb nexthop group can not contain fdb nexthops
	run_cmd "$IP nexthop add id 16 via 172.16.1.2 fdb"
	run_cmd "$IP nexthop add id 17 via 172.16.1.3 fdb"
	run_cmd "$IP nexthop add id 104 group 14/15"
	log_test $? 2 "Non-Fdb Nexthop group with fdb nexthops"

	# fdb nexthop cannot have blackhole
	run_cmd "$IP nexthop add id 18 blackhole fdb"
	log_test $? 2 "Fdb Nexthop with blackhole"

	# fdb nexthop with oif
	run_cmd "$IP nexthop add id 16 via 172.16.1.2 dev veth1 fdb"
	log_test $? 2 "Fdb Nexthop with oif"

	# fdb nexthop with onlink
	run_cmd "$IP nexthop add id 16 via 172.16.1.2 onlink fdb"
	log_test $? 2 "Fdb Nexthop with onlink"

	# fdb nexthop with encap
	run_cmd "$IP nexthop add id 17 encap mpls 101 via 172.16.1.2 dev veth1 fdb"
	log_test $? 2 "Fdb Nexthop with encap"

	run_cmd "$IP link add name vx10 type vxlan id 1010 local 10.0.0.1 remote 10.0.0.2 dstport 4789 nolearning noudpcsum tos inherit ttl 100"
	run_cmd "$BRIDGE fdb add 02:02:00:00:00:13 dev vx10 nhid 102 self"
	log_test $? 0 "Fdb mac add with nexthop group"

	# fdb nexthops can only reference nexthop groups and not nexthops
	run_cmd "$BRIDGE fdb add 02:02:00:00:00:14 dev vx10 nhid 12 self"
	log_test $? 255 "Fdb mac add with nexthop"

	run_cmd "$IP ro add 172.16.0.0/22 nhid 15"
	log_test $? 2 "Route add with fdb nexthop"

	run_cmd "$IP ro add 172.16.0.0/22 nhid 103"
	log_test $? 2 "Route add with fdb nexthop group"

	run_cmd "$IP nexthop del id 12"
	run_cmd "$BRIDGE fdb get to 02:02:00:00:00:13 dev vx10 self"
	log_test $? 0 "Fdb entry after deleting a single nexthop"

	run_cmd "$IP nexthop del id 102"
	log_test $? 0 "Fdb nexthop delete"

	run_cmd "$BRIDGE fdb get to 02:02:00:00:00:13 dev vx10 self"
	log_test $? 254 "Fdb entry after deleting a nexthop group"

	$IP link del dev vx10
}

################################################################################
# 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_refs()
{
	if [ ! -x "$(command -v mausezahn)" ]; then
		echo "SKIP: Could not run test; need mausezahn tool"
		return
	fi

	run_cmd "$IP link set dev veth1 up"
	run_cmd "$IP link add veth1.10 link veth1 up type vlan id 10"
	run_cmd "$IP link add veth1.20 link veth1 up type vlan id 20"
	run_cmd "$IP -6 addr add 2001:db8:91::1/64 dev veth1.10"
	run_cmd "$IP -6 addr add 2001:db8:92::1/64 dev veth1.20"
	run_cmd "$IP -6 neigh add 2001:db8:91::2 lladdr 00:11:22:33:44:55 dev veth1.10"
	run_cmd "$IP -6 neigh add 2001:db8:92::2 lladdr 00:11:22:33:44:55 dev veth1.20"
	run_cmd "$IP nexthop add id 100 via 2001:db8:91::2 dev veth1.10"
	run_cmd "$IP nexthop add id 101 via 2001:db8:92::2 dev veth1.20"
	run_cmd "$IP nexthop add id 102 group 100"
	run_cmd "$IP route add 2001:db8:101::1/128 nhid 102"

	# create per-cpu dsts through nh 100
	run_cmd "ip netns exec me mausezahn -6 veth1.10 -B 2001:db8:101::1 -A 2001:db8:91::1 -c 5 -t tcp "dp=1-1023, flags=syn" >/dev/null 2>&1"

	# remove nh 100 from the group to delete the route potentially leaving
	# a stale per-cpu dst which holds a reference to the nexthop's net
	# device and to the IPv6 route
	run_cmd "$IP nexthop replace id 102 group 101"
	run_cmd "$IP route del 2001:db8:101::1/128"

	# add both nexthops to the group so a reference is taken on them
	run_cmd "$IP nexthop replace id 102 group 100/101"

	# if the bug described in commit "net: nexthop: release IPv6 per-cpu
	# dsts when replacing a nexthop group" exists at this point we have
	# an unlinked IPv6 route (but not freed due to stale dst) with a
	# reference over the group so we delete the group which will again
	# only unlink it due to the route reference
	run_cmd "$IP nexthop del id 102"

	# delete the nexthop with stale dst, since we have an unlinked
	# group with a ref to it and an unlinked IPv6 route with ref to the
	# group, the nh will only be unlinked and not freed so the stale dst
	# remains forever and we get a net device refcount imbalance
	run_cmd "$IP nexthop del id 100"

	# if a reference was lost this command will hang because the net device
	# cannot be removed
	timeout -s KILL 5 ip netns exec me ip link del veth1.10 >/dev/null 2>&1

	# we can't cleanup if the command is hung trying to delete the netdev
	if [ $? -eq 137 ]; then
		return 1
	fi

	# cleanup
	run_cmd "$IP link del veth1.20"
	run_cmd "$IP nexthop flush"

	return 0
}

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_grp_refs
	log_test $? 0 "Nexthop group replace refcounts"
}

ipv6_res_grp_fcnal()
{
	local rc

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

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	#
	# migration of nexthop buckets - equal weights
	#
	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 102 group 62/63 type resilient buckets 2 idle_timer 0"

	run_cmd "$IP nexthop del id 63"
	check_nexthop "id 102" \
		"id 102 group 62 type resilient buckets 2 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated when entry is deleted"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 62 id 102 index 1 nhid 62"
	log_test $? 0 "Nexthop buckets updated when entry is deleted"

	run_cmd "$IP nexthop add id 63 via 2001:db8:91::3 dev veth1"
	run_cmd "$IP nexthop replace id 102 group 62/63 type resilient buckets 2 idle_timer 0"
	check_nexthop "id 102" \
		"id 102 group 62/63 type resilient buckets 2 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated after replace"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 63 id 102 index 1 nhid 62"
	log_test $? 0 "Nexthop buckets updated after replace"

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

	#
	# migration of nexthop buckets - unequal weights
	#
	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 102 group 62,3/63,1 type resilient buckets 4 idle_timer 0"

	run_cmd "$IP nexthop del id 63"
	check_nexthop "id 102" \
		"id 102 group 62,3 type resilient buckets 4 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated when entry is deleted - nECMP"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 62 id 102 index 1 nhid 62 id 102 index 2 nhid 62 id 102 index 3 nhid 62"
	log_test $? 0 "Nexthop buckets updated when entry is deleted - nECMP"

	run_cmd "$IP nexthop add id 63 via 2001:db8:91::3 dev veth1"
	run_cmd "$IP nexthop replace id 102 group 62,3/63,1 type resilient buckets 4 idle_timer 0"
	check_nexthop "id 102" \
		"id 102 group 62,3/63 type resilient buckets 4 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated after replace - nECMP"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 63 id 102 index 1 nhid 62 id 102 index 2 nhid 62 id 102 index 3 nhid 62"
	log_test $? 0 "Nexthop buckets updated after replace - nECMP"
}

ipv6_fcnal_runtime()
{
	local rc

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

	#
	# 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"

	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"

	#
	# 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"

	run_cmd "$IP nexthop add id 86 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP nexthop add id 87 via 172.16.1.1 dev veth1"
	run_cmd "$IP nexthop add id 88 via 172.16.1.1 dev veth1"
	run_cmd "$IP nexthop add id 124 group 86/87/88"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
	log_test $? 2 "IPv6 route can not have a group with v4 and v6 gateways"

	run_cmd "$IP nexthop del id 88"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
	log_test $? 2 "IPv6 route can not have a group with v4 and v6 gateways"

	run_cmd "$IP nexthop del id 87"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
	log_test $? 0 "IPv6 route using a group after removing v4 gateways"

	run_cmd "$IP ro delete 2001:db8:101::1/128"
	run_cmd "$IP nexthop add id 87 via 172.16.1.1 dev veth1"
	run_cmd "$IP nexthop add id 88 via 172.16.1.1 dev veth1"
	run_cmd "$IP nexthop replace id 124 group 86/87/88"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
	log_test $? 2 "IPv6 route can not have a group with v4 and v6 gateways"

	run_cmd "$IP nexthop replace id 88 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
	log_test $? 2 "IPv6 route can not have a group with v4 and v6 gateways"

	run_cmd "$IP nexthop replace id 87 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
	log_test $? 0 "IPv6 route using a group after replacing v4 gateways"

	$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"

	# route can not use prefsrc with nexthops
	run_cmd "$IP ro add 2001:db8:101::2/128 nhid 86 from 2001:db8:91::1"
	log_test $? 2 "IPv6 route can not use src routing with external nexthop"

	# check cleanup path on invalid metric
	run_cmd "$IP ro add 2001:db8:101::2/128 nhid 86 congctl lock foo"
	log_test $? 2 "IPv6 route with invalid metric"

	# rpfilter and default route
	$IP nexthop flush >/dev/null 2>&1
	run_cmd "ip netns exec me ip6tables -t mangle -I PREROUTING 1 -m rpfilter --invert -j DROP"
	run_cmd "$IP nexthop add id 91 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP nexthop add id 92 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP nexthop add id 93 group 91/92"
	run_cmd "$IP -6 ro add default nhid 91"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 0 "Nexthop with default route and rpfilter"
	run_cmd "$IP -6 ro replace default nhid 93"
	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
	log_test $? 0 "Nexthop with multipath default route and rpfilter"

	# 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
}

ipv6_large_grp()
{
	local ecmp=32

	echo
	echo "IPv6 large groups (x$ecmp)"
	echo "---------------------"

	check_large_grp 6 $ecmp

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

ipv6_large_res_grp()
{
	echo
	echo "IPv6 large resilient group (128k buckets)"
	echo "-----------------------------------------"

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	check_large_res_grp 6 $((128 * 1024))

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

ipv6_del_add_loop1()
{
	while :; do
		$IP nexthop del id 100
		$IP nexthop add id 100 via 2001:db8:91::2 dev veth1
	done >/dev/null 2>&1
}

ipv6_grp_replace_loop()
{
	while :; do
		$IP nexthop replace id 102 group 100/101
	done >/dev/null 2>&1
}

ipv6_torture()
{
	local pid1
	local pid2
	local pid3
	local pid4
	local pid5

	echo
	echo "IPv6 runtime torture"
	echo "--------------------"
	if [ ! -x "$(command -v mausezahn)" ]; then
		echo "SKIP: Could not run test; need mausezahn tool"
		return
	fi

	run_cmd "$IP nexthop add id 100 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP nexthop add id 101 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP nexthop add id 102 group 100/101"
	run_cmd "$IP route add 2001:db8:101::1 nhid 102"
	run_cmd "$IP route add 2001:db8:101::2 nhid 102"

	ipv6_del_add_loop1 &
	pid1=$!
	ipv6_grp_replace_loop &
	pid2=$!
	ip netns exec me ping -f 2001:db8:101::1 >/dev/null 2>&1 &
	pid3=$!
	ip netns exec me ping -f 2001:db8:101::2 >/dev/null 2>&1 &
	pid4=$!
	ip netns exec me mausezahn -6 veth1 -B 2001:db8:101::2 -A 2001:db8:91::1 -c 0 -t tcp "dp=1-1023, flags=syn" >/dev/null 2>&1 &
	pid5=$!

	sleep 300
	kill -9 $pid1 $pid2 $pid3 $pid4 $pid5
	wait $pid1 $pid2 $pid3 $pid4 $pid5 2>/dev/null

	# if we did not crash, success
	log_test 0 0 "IPv6 torture test"
}

ipv6_res_grp_replace_loop()
{
	while :; do
		$IP nexthop replace id 102 group 100/101 type resilient
	done >/dev/null 2>&1
}

ipv6_res_torture()
{
	local pid1
	local pid2
	local pid3
	local pid4
	local pid5

	echo
	echo "IPv6 runtime resilient nexthop group torture"
	echo "--------------------------------------------"

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	if [ ! -x "$(command -v mausezahn)" ]; then
		echo "SKIP: Could not run test; need mausezahn tool"
		return
	fi

	run_cmd "$IP nexthop add id 100 via 2001:db8:91::2 dev veth1"
	run_cmd "$IP nexthop add id 101 via 2001:db8:92::2 dev veth3"
	run_cmd "$IP nexthop add id 102 group 100/101 type resilient buckets 512 idle_timer 0"
	run_cmd "$IP route add 2001:db8:101::1 nhid 102"
	run_cmd "$IP route add 2001:db8:101::2 nhid 102"

	ipv6_del_add_loop1 &
	pid1=$!
	ipv6_res_grp_replace_loop &
	pid2=$!
	ip netns exec me ping -f 2001:db8:101::1 >/dev/null 2>&1 &
	pid3=$!
	ip netns exec me ping -f 2001:db8:101::2 >/dev/null 2>&1 &
	pid4=$!
	ip netns exec me mausezahn -6 veth1 \
			    -B 2001:db8:101::2 -A 2001:db8:91::1 -c 0 \
			    -t tcp "dp=1-1023, flags=syn" >/dev/null 2>&1 &
	pid5=$!

	sleep 300
	kill -9 $pid1 $pid2 $pid3 $pid4 $pid5
	wait $pid1 $pid2 $pid3 $pid4 $pid5 2>/dev/null

	# if we did not crash, success
	log_test 0 0 "IPv6 resilient nexthop group torture test"
}

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"

	# nexthop route delete warning: route add with nhid and delete
	# using device
	run_cmd "$IP li set dev veth1 up"
	run_cmd "$IP nexthop add id 12 via 172.16.1.3 dev veth1"
	out1=`dmesg | grep "WARNING:.*fib_nh_match.*" | wc -l`
	run_cmd "$IP route add 172.16.101.1/32 nhid 12"
	run_cmd "$IP route delete 172.16.101.1/32 dev veth1"
	out2=`dmesg | grep "WARNING:.*fib_nh_match.*" | wc -l`
	[ $out1 -eq $out2 ]
	rc=$?
	log_test $rc 0 "Delete nexthop route warning"
	run_cmd "$IP route delete 172.16.101.1/32 nhid 12"
	run_cmd "$IP nexthop del id 12"
}

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_res_grp_fcnal()
{
	local rc

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

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	#
	# migration of nexthop buckets - equal weights
	#
	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 102 group 12/13 type resilient buckets 2 idle_timer 0"

	run_cmd "$IP nexthop del id 13"
	check_nexthop "id 102" \
		"id 102 group 12 type resilient buckets 2 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated when entry is deleted"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 12 id 102 index 1 nhid 12"
	log_test $? 0 "Nexthop buckets updated when entry is deleted"

	run_cmd "$IP nexthop add id 13 via 172.16.1.3 dev veth1"
	run_cmd "$IP nexthop replace id 102 group 12/13 type resilient buckets 2 idle_timer 0"
	check_nexthop "id 102" \
		"id 102 group 12/13 type resilient buckets 2 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated after replace"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 13 id 102 index 1 nhid 12"
	log_test $? 0 "Nexthop buckets updated after replace"

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

	#
	# migration of nexthop buckets - unequal weights
	#
	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 102 group 12,3/13,1 type resilient buckets 4 idle_timer 0"

	run_cmd "$IP nexthop del id 13"
	check_nexthop "id 102" \
		"id 102 group 12,3 type resilient buckets 4 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated when entry is deleted - nECMP"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 12 id 102 index 1 nhid 12 id 102 index 2 nhid 12 id 102 index 3 nhid 12"
	log_test $? 0 "Nexthop buckets updated when entry is deleted - nECMP"

	run_cmd "$IP nexthop add id 13 via 172.16.1.3 dev veth1"
	run_cmd "$IP nexthop replace id 102 group 12,3/13,1 type resilient buckets 4 idle_timer 0"
	check_nexthop "id 102" \
		"id 102 group 12,3/13 type resilient buckets 4 idle_timer 0 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Nexthop group updated after replace - nECMP"
	check_nexthop_bucket "list id 102" \
		"id 102 index 0 nhid 13 id 102 index 1 nhid 12 id 102 index 2 nhid 12 id 102 index 3 nhid 12"
	log_test $? 0 "Nexthop buckets updated after replace - nECMP"
}

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"

	# check cleanup path on invalid metric
	run_cmd "$IP ro add 172.16.101.2/32 nhid 22 congctl lock foo"
	log_test $? 2 "IPv4 route with invalid metric"

	#
	# 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"

	run_cmd "$IP ro delete 172.16.101.1/32 nhid 122"

	#
	# multiple default routes
	# - tests fib_select_default
	run_cmd "$IP nexthop add id 501 via 172.16.1.2 dev veth1"
	run_cmd "$IP ro add default nhid 501"
	run_cmd "$IP ro add default via 172.16.1.3 dev veth1 metric 20"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "Ping - multiple default routes, nh first"

	# flip the order
	run_cmd "$IP ro del default nhid 501"
	run_cmd "$IP ro del default via 172.16.1.3 dev veth1 metric 20"
	run_cmd "$IP ro add default via 172.16.1.2 dev veth1 metric 20"
	run_cmd "$IP nexthop replace id 501 via 172.16.1.3 dev veth1"
	run_cmd "$IP ro add default nhid 501 metric 20"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "Ping - multiple default routes, nh second"

	run_cmd "$IP nexthop delete nhid 501"
	run_cmd "$IP ro del default"

	#
	# 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

	run_cmd "$IP ro del 172.16.101.1/32 via inet6 ${lladdr} dev veth1"
	run_cmd "$IP -4 ro add default via inet6 ${lladdr} dev veth1"
	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
	log_test $? 0 "IPv4 default route with IPv6 gateway"

	#
	# 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"
}

ipv4_large_grp()
{
	local ecmp=32

	echo
	echo "IPv4 large groups (x$ecmp)"
	echo "---------------------"

	check_large_grp 4 $ecmp

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

ipv4_large_res_grp()
{
	echo
	echo "IPv4 large resilient group (128k buckets)"
	echo "-----------------------------------------"

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	check_large_res_grp 4 $((128 * 1024))

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

sysctl_nexthop_compat_mode_check()
{
	local sysctlname="net.ipv4.nexthop_compat_mode"
	local lprefix=$1

	IPE="ip netns exec me"

	$IPE sysctl -q $sysctlname 2>&1 >/dev/null
	if [ $? -ne 0 ]; then
		echo "SKIP: kernel lacks nexthop compat mode sysctl control"
		return $ksft_skip
	fi

	out=$($IPE sysctl $sysctlname 2>/dev/null)
	log_test $? 0 "$lprefix default nexthop compat mode check"
	check_output "${out}" "$sysctlname = 1"
}

sysctl_nexthop_compat_mode_set()
{
	local sysctlname="net.ipv4.nexthop_compat_mode"
	local mode=$1
	local lprefix=$2

	IPE="ip netns exec me"

	out=$($IPE sysctl -w $sysctlname=$mode)
	log_test $? 0 "$lprefix set compat mode - $mode"
	check_output "${out}" "net.ipv4.nexthop_compat_mode = $mode"
}

ipv6_compat_mode()
{
	local rc

	echo
	echo "IPv6 nexthop api compat mode test"
	echo "--------------------------------"

	sysctl_nexthop_compat_mode_check "IPv6"
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	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 "$IP nexthop add id 122 group 62/63"
	ipmout=$(start_ip_monitor route)

	run_cmd "$IP -6 ro add 2001:db8:101::1/128 nhid 122"
	# route add notification should contain expanded nexthops
	stop_ip_monitor $ipmout 3
	log_test $? 0 "IPv6 compat mode on - route add notification"

	# route dump should contain expanded nexthops
	check_route6 "2001:db8:101::1" "2001:db8:101::1 nhid 122 metric 1024 nexthop via 2001:db8:91::2 dev veth1 weight 1 nexthop via 2001:db8:91::3 dev veth1 weight 1"
	log_test $? 0 "IPv6 compat mode on - route dump"

	# change in nexthop group should generate route notification
	run_cmd "$IP nexthop add id 64 via 2001:db8:91::4 dev veth1"
	ipmout=$(start_ip_monitor route)
	run_cmd "$IP nexthop replace id 122 group 62/64"
	stop_ip_monitor $ipmout 3

	log_test $? 0 "IPv6 compat mode on - nexthop change"

	# set compat mode off
	sysctl_nexthop_compat_mode_set 0 "IPv6"

	run_cmd "$IP -6 ro del 2001:db8:101::1/128 nhid 122"

	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 "$IP nexthop add id 122 group 62/63"
	ipmout=$(start_ip_monitor route)

	run_cmd "$IP -6 ro add 2001:db8:101::1/128 nhid 122"
	# route add notification should not contain expanded nexthops
	stop_ip_monitor $ipmout 1
	log_test $? 0 "IPv6 compat mode off - route add notification"

	# route dump should not contain expanded nexthops
	check_route6 "2001:db8:101::1" "2001:db8:101::1 nhid 122 metric 1024"
	log_test $? 0 "IPv6 compat mode off - route dump"

	# change in nexthop group should not generate route notification
	run_cmd "$IP nexthop add id 64 via 2001:db8:91::4 dev veth1"
	ipmout=$(start_ip_monitor route)
	run_cmd "$IP nexthop replace id 122 group 62/64"
	stop_ip_monitor $ipmout 0
	log_test $? 0 "IPv6 compat mode off - nexthop change"

	# nexthop delete should not generate route notification
	ipmout=$(start_ip_monitor route)
	run_cmd "$IP nexthop del id 122"
	stop_ip_monitor $ipmout 0
	log_test $? 0 "IPv6 compat mode off - nexthop delete"

	# set compat mode back on
	sysctl_nexthop_compat_mode_set 1 "IPv6"
}

ipv4_compat_mode()
{
	local rc

	echo
	echo "IPv4 nexthop api compat mode"
	echo "----------------------------"

	sysctl_nexthop_compat_mode_check "IPv4"
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	run_cmd "$IP nexthop add id 21 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 22 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 122 group 21/22"
	ipmout=$(start_ip_monitor route)

	run_cmd "$IP ro add 172.16.101.1/32 nhid 122"
	stop_ip_monitor $ipmout 3

	# route add notification should contain expanded nexthops
	log_test $? 0 "IPv4 compat mode on - route add notification"

	# route dump should contain expanded nexthops
	check_route "172.16.101.1" "172.16.101.1 nhid 122 nexthop via 172.16.1.2 dev veth1 weight 1 nexthop via 172.16.1.2 dev veth1 weight 1"
	log_test $? 0 "IPv4 compat mode on - route dump"

	# change in nexthop group should generate route notification
	run_cmd "$IP nexthop add id 23 via 172.16.1.3 dev veth1"
	ipmout=$(start_ip_monitor route)
	run_cmd "$IP nexthop replace id 122 group 21/23"
	stop_ip_monitor $ipmout 3
	log_test $? 0 "IPv4 compat mode on - nexthop change"

	sysctl_nexthop_compat_mode_set 0 "IPv4"

	# cleanup
	run_cmd "$IP ro del 172.16.101.1/32 nhid 122"

	ipmout=$(start_ip_monitor route)
	run_cmd "$IP ro add 172.16.101.1/32 nhid 122"
	stop_ip_monitor $ipmout 1
	# route add notification should not contain expanded nexthops
	log_test $? 0 "IPv4 compat mode off - route add notification"

	# route dump should not contain expanded nexthops
	check_route "172.16.101.1" "172.16.101.1 nhid 122"
	log_test $? 0 "IPv4 compat mode off - route dump"

	# change in nexthop group should not generate route notification
	ipmout=$(start_ip_monitor route)
	run_cmd "$IP nexthop replace id 122 group 21/22"
	stop_ip_monitor $ipmout 0
	log_test $? 0 "IPv4 compat mode off - nexthop change"

	# nexthop delete should not generate route notification
	ipmout=$(start_ip_monitor route)
	run_cmd "$IP nexthop del id 122"
	stop_ip_monitor $ipmout 0
	log_test $? 0 "IPv4 compat mode off - nexthop delete"

	sysctl_nexthop_compat_mode_set 1 "IPv4"
}

ipv4_del_add_loop1()
{
	while :; do
		$IP nexthop del id 100
		$IP nexthop add id 100 via 172.16.1.2 dev veth1
	done >/dev/null 2>&1
}

ipv4_grp_replace_loop()
{
	while :; do
		$IP nexthop replace id 102 group 100/101
	done >/dev/null 2>&1
}

ipv4_torture()
{
	local pid1
	local pid2
	local pid3
	local pid4
	local pid5

	echo
	echo "IPv4 runtime torture"
	echo "--------------------"
	if [ ! -x "$(command -v mausezahn)" ]; then
		echo "SKIP: Could not run test; need mausezahn tool"
		return
	fi

	run_cmd "$IP nexthop add id 100 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 101 via 172.16.2.2 dev veth3"
	run_cmd "$IP nexthop add id 102 group 100/101"
	run_cmd "$IP route add 172.16.101.1 nhid 102"
	run_cmd "$IP route add 172.16.101.2 nhid 102"

	ipv4_del_add_loop1 &
	pid1=$!
	ipv4_grp_replace_loop &
	pid2=$!
	ip netns exec me ping -f 172.16.101.1 >/dev/null 2>&1 &
	pid3=$!
	ip netns exec me ping -f 172.16.101.2 >/dev/null 2>&1 &
	pid4=$!
	ip netns exec me mausezahn veth1 -B 172.16.101.2 -A 172.16.1.1 -c 0 -t tcp "dp=1-1023, flags=syn" >/dev/null 2>&1 &
	pid5=$!

	sleep 300
	kill -9 $pid1 $pid2 $pid3 $pid4 $pid5
	wait $pid1 $pid2 $pid3 $pid4 $pid5 2>/dev/null

	# if we did not crash, success
	log_test 0 0 "IPv4 torture test"
}

ipv4_res_grp_replace_loop()
{
	while :; do
		$IP nexthop replace id 102 group 100/101 type resilient
	done >/dev/null 2>&1
}

ipv4_res_torture()
{
	local pid1
	local pid2
	local pid3
	local pid4
	local pid5

	echo
	echo "IPv4 runtime resilient nexthop group torture"
	echo "--------------------------------------------"

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	if [ ! -x "$(command -v mausezahn)" ]; then
		echo "SKIP: Could not run test; need mausezahn tool"
		return
	fi

	run_cmd "$IP nexthop add id 100 via 172.16.1.2 dev veth1"
	run_cmd "$IP nexthop add id 101 via 172.16.2.2 dev veth3"
	run_cmd "$IP nexthop add id 102 group 100/101 type resilient buckets 512 idle_timer 0"
	run_cmd "$IP route add 172.16.101.1 nhid 102"
	run_cmd "$IP route add 172.16.101.2 nhid 102"

	ipv4_del_add_loop1 &
	pid1=$!
	ipv4_res_grp_replace_loop &
	pid2=$!
	ip netns exec me ping -f 172.16.101.1 >/dev/null 2>&1 &
	pid3=$!
	ip netns exec me ping -f 172.16.101.2 >/dev/null 2>&1 &
	pid4=$!
	ip netns exec me mausezahn veth1 \
				-B 172.16.101.2 -A 172.16.1.1 -c 0 \
				-t tcp "dp=1-1023, flags=syn" >/dev/null 2>&1 &
	pid5=$!

	sleep 300
	kill -9 $pid1 $pid2 $pid3 $pid4 $pid5
	wait $pid1 $pid2 $pid3 $pid4 $pid5 2>/dev/null

	# if we did not crash, success
	log_test 0 0 "IPv4 resilient nexthop group torture test"
}

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"

	# blackhole nexthop should not be affected by the state of the loopback
	# device
	run_cmd "$IP link set dev lo down"
	check_nexthop "id 2" "id 2 blackhole"
	log_test $? 0 "Blackhole nexthop with loopback device down"

	run_cmd "$IP link set dev lo up"

	#
	# 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"

	# Tests to ensure that flushing works as expected.
	run_cmd "$IP nexthop add id 105 blackhole proto 99"
	run_cmd "$IP nexthop add id 106 blackhole proto 100"
	run_cmd "$IP nexthop add id 107 blackhole proto 99"
	run_cmd "$IP nexthop flush proto 99"
	check_nexthop "id 105" ""
	check_nexthop "id 106" "id 106 blackhole proto 100"
	check_nexthop "id 107" ""
	run_cmd "$IP nexthop flush proto 100"
	check_nexthop "id 106" ""

	run_cmd "$IP nexthop flush proto 100"
	log_test $? 0 "Test proto flush"

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

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

	# Test to ensure that flushing with a multi-part nexthop dump works as
	# expected.
	local batch_file=$(mktemp)

	for i in $(seq 1 $((64 * 1024))); do
		echo "nexthop add id $i blackhole" >> $batch_file
	done

	$IP -b $batch_file
	$IP nexthop flush >/dev/null 2>&1
	[[ $($IP nexthop | wc -l) -eq 0 ]]
	log_test $? 0 "Large scale nexthop flushing"

	rm $batch_file
}

check_nexthop_buckets_balance()
{
	local nharg=$1; shift
	local ret

	while (($# > 0)); do
		local selector=$1; shift
		local condition=$1; shift
		local count

		count=$($IP -j nexthop bucket ${nharg} ${selector} | jq length)
		(( $count $condition ))
		ret=$?
		if ((ret != 0)); then
			return $ret
		fi
	done

	return 0
}

basic_res()
{
	echo
	echo "Basic resilient nexthop group functional tests"
	echo "----------------------------------------------"

	check_nexthop_res_support
	if [ $? -eq $ksft_skip ]; then
		return $ksft_skip
	fi

	run_cmd "$IP nexthop add id 1 dev veth1"

	#
	# resilient nexthop group addition
	#

	run_cmd "$IP nexthop add id 101 group 1 type resilient buckets 8"
	log_test $? 0 "Add a nexthop group with default parameters"

	run_cmd "$IP nexthop get id 101"
	check_nexthop "id 101" \
		"id 101 group 1 type resilient buckets 8 idle_timer 120 unbalanced_timer 0 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group with default parameters"

	run_cmd "$IP nexthop add id 102 group 1 type resilient
			buckets 4 idle_timer 100 unbalanced_timer 5"
	run_cmd "$IP nexthop get id 102"
	check_nexthop "id 102" \
		"id 102 group 1 type resilient buckets 4 idle_timer 100 unbalanced_timer 5 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group with non-default parameters"

	run_cmd "$IP nexthop add id 103 group 1 type resilient buckets 0"
	log_test $? 2 "Add a nexthop group with 0 buckets"

	#
	# resilient nexthop group replacement
	#

	run_cmd "$IP nexthop replace id 101 group 1 type resilient
			buckets 8 idle_timer 240 unbalanced_timer 80"
	log_test $? 0 "Replace nexthop group parameters"
	check_nexthop "id 101" \
		"id 101 group 1 type resilient buckets 8 idle_timer 240 unbalanced_timer 80 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group after replacing parameters"

	run_cmd "$IP nexthop replace id 101 group 1 type resilient idle_timer 512"
	log_test $? 0 "Replace idle timer"
	check_nexthop "id 101" \
		"id 101 group 1 type resilient buckets 8 idle_timer 512 unbalanced_timer 80 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group after replacing idle timer"

	run_cmd "$IP nexthop replace id 101 group 1 type resilient unbalanced_timer 256"
	log_test $? 0 "Replace unbalanced timer"
	check_nexthop "id 101" \
		"id 101 group 1 type resilient buckets 8 idle_timer 512 unbalanced_timer 256 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group after replacing unbalanced timer"

	run_cmd "$IP nexthop replace id 101 group 1 type resilient"
	log_test $? 0 "Replace with no parameters"
	check_nexthop "id 101" \
		"id 101 group 1 type resilient buckets 8 idle_timer 512 unbalanced_timer 256 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group after replacing no parameters"

	run_cmd "$IP nexthop replace id 101 group 1"
	log_test $? 2 "Replace nexthop group type - implicit"

	run_cmd "$IP nexthop replace id 101 group 1 type mpath"
	log_test $? 2 "Replace nexthop group type - explicit"

	run_cmd "$IP nexthop replace id 101 group 1 type resilient buckets 1024"
	log_test $? 2 "Replace number of nexthop buckets"

	check_nexthop "id 101" \
		"id 101 group 1 type resilient buckets 8 idle_timer 512 unbalanced_timer 256 unbalanced_time 0"
	log_test $? 0 "Get a nexthop group after replacing with invalid parameters"

	#
	# resilient nexthop buckets dump
	#

	$IP nexthop flush >/dev/null 2>&1
	run_cmd "$IP nexthop add id 1 dev veth1"
	run_cmd "$IP nexthop add id 2 dev veth3"
	run_cmd "$IP nexthop add id 101 group 1/2 type resilient buckets 4"
	run_cmd "$IP nexthop add id 201 group 1/2"

	check_nexthop_bucket "" \
		"id 101 index 0 nhid 2 id 101 index 1 nhid 2 id 101 index 2 nhid 1 id 101 index 3 nhid 1"
	log_test $? 0 "Dump all nexthop buckets"

	check_nexthop_bucket "list id 101" \
		"id 101 index 0 nhid 2 id 101 index 1 nhid 2 id 101 index 2 nhid 1 id 101 index 3 nhid 1"
	log_test $? 0 "Dump all nexthop buckets in a group"

	sleep 0.1
	(( $($IP -j nexthop bucket list id 101 |
	     jq '[.[] | select(.bucket.idle_time > 0 and
	                       .bucket.idle_time < 2)] | length') == 4 ))
	log_test $? 0 "All nexthop buckets report a positive near-zero idle time"

	check_nexthop_bucket "list dev veth1" \
		"id 101 index 2 nhid 1 id 101 index 3 nhid 1"
	log_test $? 0 "Dump all nexthop buckets with a specific nexthop device"

	check_nexthop_bucket "list nhid 2" \
		"id 101 index 0 nhid 2 id 101 index 1 nhid 2"
	log_test $? 0 "Dump all nexthop buckets with a specific nexthop identifier"

	run_cmd "$IP nexthop bucket list id 111"
	log_test $? 2 "Dump all nexthop buckets in a non-existent group"

	run_cmd "$IP nexthop bucket list id 201"
	log_test $? 2 "Dump all nexthop buckets in a non-resilient group"

	run_cmd "$IP nexthop bucket list dev bla"
	log_test $? 255 "Dump all nexthop buckets using a non-existent device"

	run_cmd "$IP nexthop bucket list groups"
	log_test $? 255 "Dump all nexthop buckets with invalid 'groups' keyword"

	run_cmd "$IP nexthop bucket list fdb"
	log_test $? 255 "Dump all nexthop buckets with invalid 'fdb' keyword"

	#
	# resilient nexthop buckets get requests
	#

	check_nexthop_bucket "get id 101 index 0" "id 101 index 0 nhid 2"
	log_test $? 0 "Get a valid nexthop bucket"

	run_cmd "$IP nexthop bucket get id 101 index 999"
	log_test $? 2 "Get a nexthop bucket with valid group, but invalid index"

	run_cmd "$IP nexthop bucket get id 201 index 0"
	log_test $? 2 "Get a nexthop bucket from a non-resilient group"

	run_cmd "$IP nexthop bucket get id 999 index 0"
	log_test $? 2 "Get a nexthop bucket from a non-existent group"

	#
	# tests for bucket migration
	#

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

	run_cmd "$IP nexthop add id 1 dev veth1"
	run_cmd "$IP nexthop add id 2 dev veth3"
	run_cmd "$IP nexthop add id 101
			group 1/2 type resilient buckets 10
			idle_timer 1 unbalanced_timer 20"

	check_nexthop_buckets_balance "list id 101" \
				      "nhid 1" "== 5" \
				      "nhid 2" "== 5"
	log_test $? 0 "Initial bucket allocation"

	run_cmd "$IP nexthop replace id 101
			group 1,2/2,3 type resilient"
	check_nexthop_buckets_balance "list id 101" \
				      "nhid 1" "== 4" \
				      "nhid 2" "== 6"
	log_test $? 0 "Bucket allocation after replace"

	# Check that increase in idle timer does not make buckets appear busy.
	run_cmd "$IP nexthop replace id 101
			group 1,2/2,3 type resilient
			idle_timer 10"
	run_cmd "$IP nexthop replace id 101
			group 1/2 type resilient"
	check_nexthop_buckets_balance "list id 101" \
				      "nhid 1" "== 5" \
				      "nhid 2" "== 5"
	log_test $? 0 "Buckets migrated after idle timer change"

	$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