summaryrefslogtreecommitdiffstats
path: root/drivers/net/bonding/bond_options.c
blob: 1bcbb8913e1715872c463fa8717365d5eeae284e (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
/*
 * drivers/net/bond/bond_options.c - bonding options
 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/errno.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/rcupdate.h>
#include <linux/ctype.h>
#include <linux/inet.h>
#include <linux/sched/signal.h>

#include <net/bonding.h>

static int bond_option_active_slave_set(struct bonding *bond,
					const struct bond_opt_value *newval);
static int bond_option_miimon_set(struct bonding *bond,
				  const struct bond_opt_value *newval);
static int bond_option_updelay_set(struct bonding *bond,
				   const struct bond_opt_value *newval);
static int bond_option_downdelay_set(struct bonding *bond,
				     const struct bond_opt_value *newval);
static int bond_option_use_carrier_set(struct bonding *bond,
				       const struct bond_opt_value *newval);
static int bond_option_arp_interval_set(struct bonding *bond,
					const struct bond_opt_value *newval);
static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
static int bond_option_arp_ip_targets_set(struct bonding *bond,
					  const struct bond_opt_value *newval);
static int bond_option_arp_validate_set(struct bonding *bond,
					const struct bond_opt_value *newval);
static int bond_option_arp_all_targets_set(struct bonding *bond,
					   const struct bond_opt_value *newval);
static int bond_option_primary_set(struct bonding *bond,
				   const struct bond_opt_value *newval);
static int bond_option_primary_reselect_set(struct bonding *bond,
					    const struct bond_opt_value *newval);
static int bond_option_fail_over_mac_set(struct bonding *bond,
					 const struct bond_opt_value *newval);
static int bond_option_xmit_hash_policy_set(struct bonding *bond,
					    const struct bond_opt_value *newval);
static int bond_option_resend_igmp_set(struct bonding *bond,
				       const struct bond_opt_value *newval);
static int bond_option_num_peer_notif_set(struct bonding *bond,
					  const struct bond_opt_value *newval);
static int bond_option_all_slaves_active_set(struct bonding *bond,
					     const struct bond_opt_value *newval);
static int bond_option_min_links_set(struct bonding *bond,
				     const struct bond_opt_value *newval);
static int bond_option_lp_interval_set(struct bonding *bond,
				       const struct bond_opt_value *newval);
static int bond_option_pps_set(struct bonding *bond,
			       const struct bond_opt_value *newval);
static int bond_option_lacp_rate_set(struct bonding *bond,
				     const struct bond_opt_value *newval);
static int bond_option_ad_select_set(struct bonding *bond,
				     const struct bond_opt_value *newval);
static int bond_option_queue_id_set(struct bonding *bond,
				    const struct bond_opt_value *newval);
static int bond_option_mode_set(struct bonding *bond,
				const struct bond_opt_value *newval);
static int bond_option_slaves_set(struct bonding *bond,
				  const struct bond_opt_value *newval);
static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
				  const struct bond_opt_value *newval);
static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
					     const struct bond_opt_value *newval);
static int bond_option_ad_actor_system_set(struct bonding *bond,
					   const struct bond_opt_value *newval);
static int bond_option_ad_user_port_key_set(struct bonding *bond,
					    const struct bond_opt_value *newval);


static const struct bond_opt_value bond_mode_tbl[] = {
	{ "balance-rr",    BOND_MODE_ROUNDROBIN,   BOND_VALFLAG_DEFAULT},
	{ "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
	{ "balance-xor",   BOND_MODE_XOR,          0},
	{ "broadcast",     BOND_MODE_BROADCAST,    0},
	{ "802.3ad",       BOND_MODE_8023AD,       0},
	{ "balance-tlb",   BOND_MODE_TLB,          0},
	{ "balance-alb",   BOND_MODE_ALB,          0},
	{ NULL,            -1,                     0},
};

static const struct bond_opt_value bond_pps_tbl[] = {
	{ "default", 1,         BOND_VALFLAG_DEFAULT},
	{ "maxval",  USHRT_MAX, BOND_VALFLAG_MAX},
	{ NULL,      -1,        0},
};

static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
	{ "layer2",   BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
	{ "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
	{ "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
	{ "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
	{ "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
	{ NULL,       -1,                       0},
};

static const struct bond_opt_value bond_arp_validate_tbl[] = {
	{ "none",		BOND_ARP_VALIDATE_NONE,		BOND_VALFLAG_DEFAULT},
	{ "active",		BOND_ARP_VALIDATE_ACTIVE,	0},
	{ "backup",		BOND_ARP_VALIDATE_BACKUP,	0},
	{ "all",		BOND_ARP_VALIDATE_ALL,		0},
	{ "filter",		BOND_ARP_FILTER,		0},
	{ "filter_active",	BOND_ARP_FILTER_ACTIVE,		0},
	{ "filter_backup",	BOND_ARP_FILTER_BACKUP,		0},
	{ NULL,			-1,				0},
};

static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
	{ "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
	{ "all", BOND_ARP_TARGETS_ALL, 0},
	{ NULL,  -1,                   0},
};

static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
	{ "none",   BOND_FOM_NONE,   BOND_VALFLAG_DEFAULT},
	{ "active", BOND_FOM_ACTIVE, 0},
	{ "follow", BOND_FOM_FOLLOW, 0},
	{ NULL,     -1,              0},
};

static const struct bond_opt_value bond_intmax_tbl[] = {
	{ "off",     0,       BOND_VALFLAG_DEFAULT},
	{ "maxval",  INT_MAX, BOND_VALFLAG_MAX},
	{ NULL,      -1,      0}
};

static const struct bond_opt_value bond_lacp_rate_tbl[] = {
	{ "slow", AD_LACP_SLOW, 0},
	{ "fast", AD_LACP_FAST, 0},
	{ NULL,   -1,           0},
};

static const struct bond_opt_value bond_ad_select_tbl[] = {
	{ "stable",    BOND_AD_STABLE,    BOND_VALFLAG_DEFAULT},
	{ "bandwidth", BOND_AD_BANDWIDTH, 0},
	{ "count",     BOND_AD_COUNT,     0},
	{ NULL,        -1,                0},
};

static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
	{ "off",     0,   0},
	{ "maxval",  255, BOND_VALFLAG_MAX},
	{ "default", 1,   BOND_VALFLAG_DEFAULT},
	{ NULL,      -1,  0}
};

static const struct bond_opt_value bond_primary_reselect_tbl[] = {
	{ "always",  BOND_PRI_RESELECT_ALWAYS,  BOND_VALFLAG_DEFAULT},
	{ "better",  BOND_PRI_RESELECT_BETTER,  0},
	{ "failure", BOND_PRI_RESELECT_FAILURE, 0},
	{ NULL,      -1},
};

static const struct bond_opt_value bond_use_carrier_tbl[] = {
	{ "off", 0,  0},
	{ "on",  1,  BOND_VALFLAG_DEFAULT},
	{ NULL,  -1, 0}
};

static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
	{ "off", 0,  BOND_VALFLAG_DEFAULT},
	{ "on",  1,  0},
	{ NULL,  -1, 0}
};

static const struct bond_opt_value bond_resend_igmp_tbl[] = {
	{ "off",     0,   0},
	{ "maxval",  255, BOND_VALFLAG_MAX},
	{ "default", 1,   BOND_VALFLAG_DEFAULT},
	{ NULL,      -1,  0}
};

static const struct bond_opt_value bond_lp_interval_tbl[] = {
	{ "minval",  1,       BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
	{ "maxval",  INT_MAX, BOND_VALFLAG_MAX},
	{ NULL,      -1,      0},
};

static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
	{ "off", 0,  0},
	{ "on",  1,  BOND_VALFLAG_DEFAULT},
	{ NULL,  -1, 0}
};

static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
	{ "minval",  1,     BOND_VALFLAG_MIN},
	{ "maxval",  65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
	{ NULL,      -1,    0},
};

static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
	{ "minval",  0,     BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
	{ "maxval",  1023,  BOND_VALFLAG_MAX},
	{ NULL,      -1,    0},
};

static const struct bond_option bond_opts[BOND_OPT_LAST] = {
	[BOND_OPT_MODE] = {
		.id = BOND_OPT_MODE,
		.name = "mode",
		.desc = "bond device mode",
		.flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
		.values = bond_mode_tbl,
		.set = bond_option_mode_set
	},
	[BOND_OPT_PACKETS_PER_SLAVE] = {
		.id = BOND_OPT_PACKETS_PER_SLAVE,
		.name = "packets_per_slave",
		.desc = "Packets to send per slave in RR mode",
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
		.values = bond_pps_tbl,
		.set = bond_option_pps_set
	},
	[BOND_OPT_XMIT_HASH] = {
		.id = BOND_OPT_XMIT_HASH,
		.name = "xmit_hash_policy",
		.desc = "balance-xor, 802.3ad, and tlb hashing method",
		.values = bond_xmit_hashtype_tbl,
		.set = bond_option_xmit_hash_policy_set
	},
	[BOND_OPT_ARP_VALIDATE] = {
		.id = BOND_OPT_ARP_VALIDATE,
		.name = "arp_validate",
		.desc = "validate src/dst of ARP probes",
		.unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
			       BIT(BOND_MODE_ALB),
		.values = bond_arp_validate_tbl,
		.set = bond_option_arp_validate_set
	},
	[BOND_OPT_ARP_ALL_TARGETS] = {
		.id = BOND_OPT_ARP_ALL_TARGETS,
		.name = "arp_all_targets",
		.desc = "fail on any/all arp targets timeout",
		.values = bond_arp_all_targets_tbl,
		.set = bond_option_arp_all_targets_set
	},
	[BOND_OPT_FAIL_OVER_MAC] = {
		.id = BOND_OPT_FAIL_OVER_MAC,
		.name = "fail_over_mac",
		.desc = "For active-backup, do not set all slaves to the same MAC",
		.flags = BOND_OPTFLAG_NOSLAVES,
		.values = bond_fail_over_mac_tbl,
		.set = bond_option_fail_over_mac_set
	},
	[BOND_OPT_ARP_INTERVAL] = {
		.id = BOND_OPT_ARP_INTERVAL,
		.name = "arp_interval",
		.desc = "arp interval in milliseconds",
		.unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
			       BIT(BOND_MODE_ALB),
		.values = bond_intmax_tbl,
		.set = bond_option_arp_interval_set
	},
	[BOND_OPT_ARP_TARGETS] = {
		.id = BOND_OPT_ARP_TARGETS,
		.name = "arp_ip_target",
		.desc = "arp targets in n.n.n.n form",
		.flags = BOND_OPTFLAG_RAWVAL,
		.set = bond_option_arp_ip_targets_set
	},
	[BOND_OPT_DOWNDELAY] = {
		.id = BOND_OPT_DOWNDELAY,
		.name = "downdelay",
		.desc = "Delay before considering link down, in milliseconds",
		.values = bond_intmax_tbl,
		.set = bond_option_downdelay_set
	},
	[BOND_OPT_UPDELAY] = {
		.id = BOND_OPT_UPDELAY,
		.name = "updelay",
		.desc = "Delay before considering link up, in milliseconds",
		.values = bond_intmax_tbl,
		.set = bond_option_updelay_set
	},
	[BOND_OPT_LACP_RATE] = {
		.id = BOND_OPT_LACP_RATE,
		.name = "lacp_rate",
		.desc = "LACPDU tx rate to request from 802.3ad partner",
		.flags = BOND_OPTFLAG_IFDOWN,
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
		.values = bond_lacp_rate_tbl,
		.set = bond_option_lacp_rate_set
	},
	[BOND_OPT_MINLINKS] = {
		.id = BOND_OPT_MINLINKS,
		.name = "min_links",
		.desc = "Minimum number of available links before turning on carrier",
		.values = bond_intmax_tbl,
		.set = bond_option_min_links_set
	},
	[BOND_OPT_AD_SELECT] = {
		.id = BOND_OPT_AD_SELECT,
		.name = "ad_select",
		.desc = "803.ad aggregation selection logic",
		.flags = BOND_OPTFLAG_IFDOWN,
		.values = bond_ad_select_tbl,
		.set = bond_option_ad_select_set
	},
	[BOND_OPT_NUM_PEER_NOTIF] = {
		.id = BOND_OPT_NUM_PEER_NOTIF,
		.name = "num_unsol_na",
		.desc = "Number of peer notifications to send on failover event",
		.values = bond_num_peer_notif_tbl,
		.set = bond_option_num_peer_notif_set
	},
	[BOND_OPT_MIIMON] = {
		.id = BOND_OPT_MIIMON,
		.name = "miimon",
		.desc = "Link check interval in milliseconds",
		.values = bond_intmax_tbl,
		.set = bond_option_miimon_set
	},
	[BOND_OPT_PRIMARY] = {
		.id = BOND_OPT_PRIMARY,
		.name = "primary",
		.desc = "Primary network device to use",
		.flags = BOND_OPTFLAG_RAWVAL,
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
						BIT(BOND_MODE_TLB) |
						BIT(BOND_MODE_ALB)),
		.set = bond_option_primary_set
	},
	[BOND_OPT_PRIMARY_RESELECT] = {
		.id = BOND_OPT_PRIMARY_RESELECT,
		.name = "primary_reselect",
		.desc = "Reselect primary slave once it comes up",
		.values = bond_primary_reselect_tbl,
		.set = bond_option_primary_reselect_set
	},
	[BOND_OPT_USE_CARRIER] = {
		.id = BOND_OPT_USE_CARRIER,
		.name = "use_carrier",
		.desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
		.values = bond_use_carrier_tbl,
		.set = bond_option_use_carrier_set
	},
	[BOND_OPT_ACTIVE_SLAVE] = {
		.id = BOND_OPT_ACTIVE_SLAVE,
		.name = "active_slave",
		.desc = "Currently active slave",
		.flags = BOND_OPTFLAG_RAWVAL,
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
						BIT(BOND_MODE_TLB) |
						BIT(BOND_MODE_ALB)),
		.set = bond_option_active_slave_set
	},
	[BOND_OPT_QUEUE_ID] = {
		.id = BOND_OPT_QUEUE_ID,
		.name = "queue_id",
		.desc = "Set queue id of a slave",
		.flags = BOND_OPTFLAG_RAWVAL,
		.set = bond_option_queue_id_set
	},
	[BOND_OPT_ALL_SLAVES_ACTIVE] = {
		.id = BOND_OPT_ALL_SLAVES_ACTIVE,
		.name = "all_slaves_active",
		.desc = "Keep all frames received on an interface by setting active flag for all slaves",
		.values = bond_all_slaves_active_tbl,
		.set = bond_option_all_slaves_active_set
	},
	[BOND_OPT_RESEND_IGMP] = {
		.id = BOND_OPT_RESEND_IGMP,
		.name = "resend_igmp",
		.desc = "Number of IGMP membership reports to send on link failure",
		.values = bond_resend_igmp_tbl,
		.set = bond_option_resend_igmp_set
	},
	[BOND_OPT_LP_INTERVAL] = {
		.id = BOND_OPT_LP_INTERVAL,
		.name = "lp_interval",
		.desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
		.values = bond_lp_interval_tbl,
		.set = bond_option_lp_interval_set
	},
	[BOND_OPT_SLAVES] = {
		.id = BOND_OPT_SLAVES,
		.name = "slaves",
		.desc = "Slave membership management",
		.flags = BOND_OPTFLAG_RAWVAL,
		.set = bond_option_slaves_set
	},
	[BOND_OPT_TLB_DYNAMIC_LB] = {
		.id = BOND_OPT_TLB_DYNAMIC_LB,
		.name = "tlb_dynamic_lb",
		.desc = "Enable dynamic flow shuffling",
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB)),
		.values = bond_tlb_dynamic_lb_tbl,
		.flags = BOND_OPTFLAG_IFDOWN,
		.set = bond_option_tlb_dynamic_lb_set,
	},
	[BOND_OPT_AD_ACTOR_SYS_PRIO] = {
		.id = BOND_OPT_AD_ACTOR_SYS_PRIO,
		.name = "ad_actor_sys_prio",
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
		.values = bond_ad_actor_sys_prio_tbl,
		.set = bond_option_ad_actor_sys_prio_set,
	},
	[BOND_OPT_AD_ACTOR_SYSTEM] = {
		.id = BOND_OPT_AD_ACTOR_SYSTEM,
		.name = "ad_actor_system",
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
		.flags = BOND_OPTFLAG_RAWVAL,
		.set = bond_option_ad_actor_system_set,
	},
	[BOND_OPT_AD_USER_PORT_KEY] = {
		.id = BOND_OPT_AD_USER_PORT_KEY,
		.name = "ad_user_port_key",
		.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
		.flags = BOND_OPTFLAG_IFDOWN,
		.values = bond_ad_user_port_key_tbl,
		.set = bond_option_ad_user_port_key_set,
	},
	[BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
		.id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
		.name = "num_grat_arp",
		.desc = "Number of peer notifications to send on failover event",
		.values = bond_num_peer_notif_tbl,
		.set = bond_option_num_peer_notif_set
	}
};

/* Searches for an option by name */
const struct bond_option *bond_opt_get_by_name(const char *name)
{
	const struct bond_option *opt;
	int option;

	for (option = 0; option < BOND_OPT_LAST; option++) {
		opt = bond_opt_get(option);
		if (opt && !strcmp(opt->name, name))
			return opt;
	}

	return NULL;
}

/* Searches for a value in opt's values[] table */
const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
{
	const struct bond_option *opt;
	int i;

	opt = bond_opt_get(option);
	if (WARN_ON(!opt))
		return NULL;
	for (i = 0; opt->values && opt->values[i].string; i++)
		if (opt->values[i].value == val)
			return &opt->values[i];

	return NULL;
}

/* Searches for a value in opt's values[] table which matches the flagmask */
static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
						 u32 flagmask)
{
	int i;

	for (i = 0; opt->values && opt->values[i].string; i++)
		if (opt->values[i].flags & flagmask)
			return &opt->values[i];

	return NULL;
}

/* If maxval is missing then there's no range to check. In case minval is
 * missing then it's considered to be 0.
 */
static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
{
	const struct bond_opt_value *minval, *maxval;

	minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
	maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
	if (!maxval || (minval && val < minval->value) || val > maxval->value)
		return false;

	return true;
}

/**
 * bond_opt_parse - parse option value
 * @opt: the option to parse against
 * @val: value to parse
 *
 * This function tries to extract the value from @val and check if it's
 * a possible match for the option and returns NULL if a match isn't found,
 * or the struct_opt_value that matched. It also strips the new line from
 * @val->string if it's present.
 */
const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
					    struct bond_opt_value *val)
{
	char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
	const struct bond_opt_value *tbl;
	const struct bond_opt_value *ret = NULL;
	bool checkval;
	int i, rv;

	/* No parsing if the option wants a raw val */
	if (opt->flags & BOND_OPTFLAG_RAWVAL)
		return val;

	tbl = opt->values;
	if (!tbl)
		goto out;

	/* ULLONG_MAX is used to bypass string processing */
	checkval = val->value != ULLONG_MAX;
	if (!checkval) {
		if (!val->string)
			goto out;
		p = strchr(val->string, '\n');
		if (p)
			*p = '\0';
		for (p = val->string; *p; p++)
			if (!(isdigit(*p) || isspace(*p)))
				break;
		/* The following code extracts the string to match or the value
		 * and sets checkval appropriately
		 */
		if (*p) {
			rv = sscanf(val->string, "%32s", valstr);
		} else {
			rv = sscanf(val->string, "%llu", &val->value);
			checkval = true;
		}
		if (!rv)
			goto out;
	}

	for (i = 0; tbl[i].string; i++) {
		/* Check for exact match */
		if (checkval) {
			if (val->value == tbl[i].value)
				ret = &tbl[i];
		} else {
			if (!strcmp(valstr, "default") &&
			    (tbl[i].flags & BOND_VALFLAG_DEFAULT))
				ret = &tbl[i];

			if (!strcmp(valstr, tbl[i].string))
				ret = &tbl[i];
		}
		/* Found an exact match */
		if (ret)
			goto out;
	}
	/* Possible range match */
	if (checkval && bond_opt_check_range(opt, val->value))
		ret = val;
out:
	return ret;
}

/* Check opt's dependencies against bond mode and currently set options */
static int bond_opt_check_deps(struct bonding *bond,
			       const struct bond_option *opt)
{
	struct bond_params *params = &bond->params;

	if (test_bit(params->mode, &opt->unsuppmodes))
		return -EACCES;
	if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
		return -ENOTEMPTY;
	if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
		return -EBUSY;

	return 0;
}

static void bond_opt_dep_print(struct bonding *bond,
			       const struct bond_option *opt)
{
	const struct bond_opt_value *modeval;
	struct bond_params *params;

	params = &bond->params;
	modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
	if (test_bit(params->mode, &opt->unsuppmodes))
		netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
			   opt->name, modeval->string, modeval->value);
}

static void bond_opt_error_interpret(struct bonding *bond,
				     const struct bond_option *opt,
				     int error, const struct bond_opt_value *val)
{
	const struct bond_opt_value *minval, *maxval;
	char *p;

	switch (error) {
	case -EINVAL:
		if (val) {
			if (val->string) {
				/* sometimes RAWVAL opts may have new lines */
				p = strchr(val->string, '\n');
				if (p)
					*p = '\0';
				netdev_err(bond->dev, "option %s: invalid value (%s)\n",
					   opt->name, val->string);
			} else {
				netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
					   opt->name, val->value);
			}
		}
		minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
		maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
		if (!maxval)
			break;
		netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
			   opt->name, minval ? minval->value : 0, maxval->value);
		break;
	case -EACCES:
		bond_opt_dep_print(bond, opt);
		break;
	case -ENOTEMPTY:
		netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
			   opt->name);
		break;
	case -EBUSY:
		netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
			   opt->name);
		break;
	default:
		break;
	}
}

/**
 * __bond_opt_set - set a bonding option
 * @bond: target bond device
 * @option: option to set
 * @val: value to set it to
 *
 * This function is used to change the bond's option value, it can be
 * used for both enabling/changing an option and for disabling it. RTNL lock
 * must be obtained before calling this function.
 */
int __bond_opt_set(struct bonding *bond,
		   unsigned int option, struct bond_opt_value *val)
{
	const struct bond_opt_value *retval = NULL;
	const struct bond_option *opt;
	int ret = -ENOENT;

	ASSERT_RTNL();

	opt = bond_opt_get(option);
	if (WARN_ON(!val) || WARN_ON(!opt))
		goto out;
	ret = bond_opt_check_deps(bond, opt);
	if (ret)
		goto out;
	retval = bond_opt_parse(opt, val);
	if (!retval) {
		ret = -EINVAL;
		goto out;
	}
	ret = opt->set(bond, retval);
out:
	if (ret)
		bond_opt_error_interpret(bond, opt, ret, val);
	else if (bond->dev->reg_state == NETREG_REGISTERED)
		call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);

	return ret;
}

/**
 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
 * @bond: target bond device
 * @option: option to set
 * @buf: value to set it to
 *
 * This function tries to acquire RTNL without blocking and if successful
 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
 */
int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
{
	struct bond_opt_value optval;
	int ret;

	if (!rtnl_trylock())
		return restart_syscall();
	bond_opt_initstr(&optval, buf);
	ret = __bond_opt_set(bond, option, &optval);
	rtnl_unlock();

	return ret;
}

/**
 * bond_opt_get - get a pointer to an option
 * @option: option for which to return a pointer
 *
 * This function checks if option is valid and if so returns a pointer
 * to its entry in the bond_opts[] option array.
 */
const struct bond_option *bond_opt_get(unsigned int option)
{
	if (!BOND_OPT_VALID(option))
		return NULL;

	return &bond_opts[option];
}

static int bond_option_mode_set(struct bonding *bond,
				const struct bond_opt_value *newval)
{
	if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) {
		netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
			    newval->string);
		/* disable arp monitoring */
		bond->params.arp_interval = 0;
		/* set miimon to default value */
		bond->params.miimon = BOND_DEFAULT_MIIMON;
		netdev_info(bond->dev, "Setting MII monitoring interval to %d\n",
			    bond->params.miimon);
	}

	/* don't cache arp_validate between modes */
	bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
	bond->params.mode = newval->value;

	return 0;
}

static int bond_option_active_slave_set(struct bonding *bond,
					const struct bond_opt_value *newval)
{
	char ifname[IFNAMSIZ] = { 0, };
	struct net_device *slave_dev;
	int ret = 0;

	sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
	if (!strlen(ifname) || newval->string[0] == '\n') {
		slave_dev = NULL;
	} else {
		slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
		if (!slave_dev)
			return -ENODEV;
	}

	if (slave_dev) {
		if (!netif_is_bond_slave(slave_dev)) {
			netdev_err(bond->dev, "Device %s is not bonding slave\n",
				   slave_dev->name);
			return -EINVAL;
		}

		if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
			netdev_err(bond->dev, "Device %s is not our slave\n",
				   slave_dev->name);
			return -EINVAL;
		}
	}

	block_netpoll_tx();
	/* check to see if we are clearing active */
	if (!slave_dev) {
		netdev_info(bond->dev, "Clearing current active slave\n");
		RCU_INIT_POINTER(bond->curr_active_slave, NULL);
		bond_select_active_slave(bond);
	} else {
		struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
		struct slave *new_active = bond_slave_get_rtnl(slave_dev);

		BUG_ON(!new_active);

		if (new_active == old_active) {
			/* do nothing */
			netdev_info(bond->dev, "%s is already the current active slave\n",
				    new_active->dev->name);
		} else {
			if (old_active && (new_active->link == BOND_LINK_UP) &&
			    bond_slave_is_up(new_active)) {
				netdev_info(bond->dev, "Setting %s as active slave\n",
					    new_active->dev->name);
				bond_change_active_slave(bond, new_active);
			} else {
				netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n",
					   new_active->dev->name,
					   new_active->dev->name);
				ret = -EINVAL;
			}
		}
	}
	unblock_netpoll_tx();

	return ret;
}

/* There are two tricky bits here.  First, if MII monitoring is activated, then
 * we must disable ARP monitoring.  Second, if the timer isn't running, we must
 * start it.
 */
static int bond_option_miimon_set(struct bonding *bond,
				  const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n",
		    newval->value);
	bond->params.miimon = newval->value;
	if (bond->params.updelay)
		netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
			bond->params.updelay * bond->params.miimon);
	if (bond->params.downdelay)
		netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
			    bond->params.downdelay * bond->params.miimon);
	if (newval->value && bond->params.arp_interval) {
		netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
		bond->params.arp_interval = 0;
		if (bond->params.arp_validate)
			bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
	}
	if (bond->dev->flags & IFF_UP) {
		/* If the interface is up, we may need to fire off
		 * the MII timer. If the interface is down, the
		 * timer will get fired off when the open function
		 * is called.
		 */
		if (!newval->value) {
			cancel_delayed_work_sync(&bond->mii_work);
		} else {
			cancel_delayed_work_sync(&bond->arp_work);
			queue_delayed_work(bond->wq, &bond->mii_work, 0);
		}
	}

	return 0;
}

/* Set up and down delays. These must be multiples of the
 * MII monitoring value, and are stored internally as the multiplier.
 * Thus, we must translate to MS for the real world.
 */
static int bond_option_updelay_set(struct bonding *bond,
				   const struct bond_opt_value *newval)
{
	int value = newval->value;

	if (!bond->params.miimon) {
		netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n");
		return -EPERM;
	}
	if ((value % bond->params.miimon) != 0) {
		netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
			    value, bond->params.miimon,
			    (value / bond->params.miimon) *
			    bond->params.miimon);
	}
	bond->params.updelay = value / bond->params.miimon;
	netdev_info(bond->dev, "Setting up delay to %d\n",
		    bond->params.updelay * bond->params.miimon);

	return 0;
}

static int bond_option_downdelay_set(struct bonding *bond,
				     const struct bond_opt_value *newval)
{
	int value = newval->value;

	if (!bond->params.miimon) {
		netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n");
		return -EPERM;
	}
	if ((value % bond->params.miimon) != 0) {
		netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
			    value, bond->params.miimon,
			    (value / bond->params.miimon) *
			    bond->params.miimon);
	}
	bond->params.downdelay = value / bond->params.miimon;
	netdev_info(bond->dev, "Setting down delay to %d\n",
		    bond->params.downdelay * bond->params.miimon);

	return 0;
}

static int bond_option_use_carrier_set(struct bonding *bond,
				       const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting use_carrier to %llu\n",
		    newval->value);
	bond->params.use_carrier = newval->value;

	return 0;
}

/* There are two tricky bits here.  First, if ARP monitoring is activated, then
 * we must disable MII monitoring.  Second, if the ARP timer isn't running,
 * we must start it.
 */
static int bond_option_arp_interval_set(struct bonding *bond,
					const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n",
		    newval->value);
	bond->params.arp_interval = newval->value;
	if (newval->value) {
		if (bond->params.miimon) {
			netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
			bond->params.miimon = 0;
		}
		if (!bond->params.arp_targets[0])
			netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
	}
	if (bond->dev->flags & IFF_UP) {
		/* If the interface is up, we may need to fire off
		 * the ARP timer.  If the interface is down, the
		 * timer will get fired off when the open function
		 * is called.
		 */
		if (!newval->value) {
			if (bond->params.arp_validate)
				bond->recv_probe = NULL;
			cancel_delayed_work_sync(&bond->arp_work);
		} else {
			/* arp_validate can be set only in active-backup mode */
			bond->recv_probe = bond_arp_rcv;
			cancel_delayed_work_sync(&bond->mii_work);
			queue_delayed_work(bond->wq, &bond->arp_work, 0);
		}
	}

	return 0;
}

static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
					    __be32 target,
					    unsigned long last_rx)
{
	__be32 *targets = bond->params.arp_targets;
	struct list_head *iter;
	struct slave *slave;

	if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
		bond_for_each_slave(bond, slave, iter)
			slave->target_last_arp_rx[slot] = last_rx;
		targets[slot] = target;
	}
}

static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
{
	__be32 *targets = bond->params.arp_targets;
	int ind;

	if (!bond_is_ip_target_ok(target)) {
		netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
			   &target);
		return -EINVAL;
	}

	if (bond_get_targets_ip(targets, target) != -1) { /* dup */
		netdev_err(bond->dev, "ARP target %pI4 is already present\n",
			   &target);
		return -EINVAL;
	}

	ind = bond_get_targets_ip(targets, 0); /* first free slot */
	if (ind == -1) {
		netdev_err(bond->dev, "ARP target table is full!\n");
		return -EINVAL;
	}

	netdev_info(bond->dev, "Adding ARP target %pI4\n", &target);

	_bond_options_arp_ip_target_set(bond, ind, target, jiffies);

	return 0;
}

static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
{
	return _bond_option_arp_ip_target_add(bond, target);
}

static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
{
	__be32 *targets = bond->params.arp_targets;
	struct list_head *iter;
	struct slave *slave;
	unsigned long *targets_rx;
	int ind, i;

	if (!bond_is_ip_target_ok(target)) {
		netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
			   &target);
		return -EINVAL;
	}

	ind = bond_get_targets_ip(targets, target);
	if (ind == -1) {
		netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
			   &target);
		return -EINVAL;
	}

	if (ind == 0 && !targets[1] && bond->params.arp_interval)
		netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");

	netdev_info(bond->dev, "Removing ARP target %pI4\n", &target);

	bond_for_each_slave(bond, slave, iter) {
		targets_rx = slave->target_last_arp_rx;
		for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
			targets_rx[i] = targets_rx[i+1];
		targets_rx[i] = 0;
	}
	for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
		targets[i] = targets[i+1];
	targets[i] = 0;

	return 0;
}

void bond_option_arp_ip_targets_clear(struct bonding *bond)
{
	int i;

	for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
		_bond_options_arp_ip_target_set(bond, i, 0, 0);
}

static int bond_option_arp_ip_targets_set(struct bonding *bond,
					  const struct bond_opt_value *newval)
{
	int ret = -EPERM;
	__be32 target;

	if (newval->string) {
		if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
			netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
				   &target);
			return ret;
		}
		if (newval->string[0] == '+')
			ret = bond_option_arp_ip_target_add(bond, target);
		else if (newval->string[0] == '-')
			ret = bond_option_arp_ip_target_rem(bond, target);
		else
			netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
	} else {
		target = newval->value;
		ret = bond_option_arp_ip_target_add(bond, target);
	}

	return ret;
}

static int bond_option_arp_validate_set(struct bonding *bond,
					const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n",
		    newval->string, newval->value);

	if (bond->dev->flags & IFF_UP) {
		if (!newval->value)
			bond->recv_probe = NULL;
		else if (bond->params.arp_interval)
			bond->recv_probe = bond_arp_rcv;
	}
	bond->params.arp_validate = newval->value;

	return 0;
}

static int bond_option_arp_all_targets_set(struct bonding *bond,
					   const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.arp_all_targets = newval->value;

	return 0;
}

static int bond_option_primary_set(struct bonding *bond,
				   const struct bond_opt_value *newval)
{
	char *p, *primary = newval->string;
	struct list_head *iter;
	struct slave *slave;

	block_netpoll_tx();

	p = strchr(primary, '\n');
	if (p)
		*p = '\0';
	/* check to see if we are clearing primary */
	if (!strlen(primary)) {
		netdev_info(bond->dev, "Setting primary slave to None\n");
		RCU_INIT_POINTER(bond->primary_slave, NULL);
		memset(bond->params.primary, 0, sizeof(bond->params.primary));
		bond_select_active_slave(bond);
		goto out;
	}

	bond_for_each_slave(bond, slave, iter) {
		if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
			netdev_info(bond->dev, "Setting %s as primary slave\n",
				    slave->dev->name);
			rcu_assign_pointer(bond->primary_slave, slave);
			strcpy(bond->params.primary, slave->dev->name);
			bond_select_active_slave(bond);
			goto out;
		}
	}

	if (rtnl_dereference(bond->primary_slave)) {
		netdev_info(bond->dev, "Setting primary slave to None\n");
		RCU_INIT_POINTER(bond->primary_slave, NULL);
		bond_select_active_slave(bond);
	}
	strncpy(bond->params.primary, primary, IFNAMSIZ);
	bond->params.primary[IFNAMSIZ - 1] = 0;

	netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n",
		    primary, bond->dev->name);

out:
	unblock_netpoll_tx();

	return 0;
}

static int bond_option_primary_reselect_set(struct bonding *bond,
					    const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.primary_reselect = newval->value;

	block_netpoll_tx();
	bond_select_active_slave(bond);
	unblock_netpoll_tx();

	return 0;
}

static int bond_option_fail_over_mac_set(struct bonding *bond,
					 const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.fail_over_mac = newval->value;

	return 0;
}

static int bond_option_xmit_hash_policy_set(struct bonding *bond,
					    const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.xmit_policy = newval->value;

	return 0;
}

static int bond_option_resend_igmp_set(struct bonding *bond,
				       const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting resend_igmp to %llu\n",
		    newval->value);
	bond->params.resend_igmp = newval->value;

	return 0;
}

static int bond_option_num_peer_notif_set(struct bonding *bond,
				   const struct bond_opt_value *newval)
{
	bond->params.num_peer_notif = newval->value;

	return 0;
}

static int bond_option_all_slaves_active_set(struct bonding *bond,
					     const struct bond_opt_value *newval)
{
	struct list_head *iter;
	struct slave *slave;

	if (newval->value == bond->params.all_slaves_active)
		return 0;
	bond->params.all_slaves_active = newval->value;
	bond_for_each_slave(bond, slave, iter) {
		if (!bond_is_active_slave(slave)) {
			if (newval->value)
				slave->inactive = 0;
			else
				slave->inactive = 1;
		}
	}

	return 0;
}

static int bond_option_min_links_set(struct bonding *bond,
				     const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting min links value to %llu\n",
		    newval->value);
	bond->params.min_links = newval->value;
	bond_set_carrier(bond);

	return 0;
}

static int bond_option_lp_interval_set(struct bonding *bond,
				       const struct bond_opt_value *newval)
{
	bond->params.lp_interval = newval->value;

	return 0;
}

static int bond_option_pps_set(struct bonding *bond,
			       const struct bond_opt_value *newval)
{
	bond->params.packets_per_slave = newval->value;
	if (newval->value > 0) {
		bond->params.reciprocal_packets_per_slave =
			reciprocal_value(newval->value);
	} else {
		/* reciprocal_packets_per_slave is unused if
		 * packets_per_slave is 0 or 1, just initialize it
		 */
		bond->params.reciprocal_packets_per_slave =
			(struct reciprocal_value) { 0 };
	}

	return 0;
}

static int bond_option_lacp_rate_set(struct bonding *bond,
				     const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.lacp_fast = newval->value;
	bond_3ad_update_lacp_rate(bond);

	return 0;
}

static int bond_option_ad_select_set(struct bonding *bond,
				     const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.ad_select = newval->value;

	return 0;
}

static int bond_option_queue_id_set(struct bonding *bond,
				    const struct bond_opt_value *newval)
{
	struct slave *slave, *update_slave;
	struct net_device *sdev;
	struct list_head *iter;
	char *delim;
	int ret = 0;
	u16 qid;

	/* delim will point to queue id if successful */
	delim = strchr(newval->string, ':');
	if (!delim)
		goto err_no_cmd;

	/* Terminate string that points to device name and bump it
	 * up one, so we can read the queue id there.
	 */
	*delim = '\0';
	if (sscanf(++delim, "%hd\n", &qid) != 1)
		goto err_no_cmd;

	/* Check buffer length, valid ifname and queue id */
	if (!dev_valid_name(newval->string) ||
	    qid > bond->dev->real_num_tx_queues)
		goto err_no_cmd;

	/* Get the pointer to that interface if it exists */
	sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
	if (!sdev)
		goto err_no_cmd;

	/* Search for thes slave and check for duplicate qids */
	update_slave = NULL;
	bond_for_each_slave(bond, slave, iter) {
		if (sdev == slave->dev)
			/* We don't need to check the matching
			 * slave for dups, since we're overwriting it
			 */
			update_slave = slave;
		else if (qid && qid == slave->queue_id) {
			goto err_no_cmd;
		}
	}

	if (!update_slave)
		goto err_no_cmd;

	/* Actually set the qids for the slave */
	update_slave->queue_id = qid;

out:
	return ret;

err_no_cmd:
	netdev_info(bond->dev, "invalid input for queue_id set\n");
	ret = -EPERM;
	goto out;

}

static int bond_option_slaves_set(struct bonding *bond,
				  const struct bond_opt_value *newval)
{
	char command[IFNAMSIZ + 1] = { 0, };
	struct net_device *dev;
	char *ifname;
	int ret;

	sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
	ifname = command + 1;
	if ((strlen(command) <= 1) ||
	    !dev_valid_name(ifname))
		goto err_no_cmd;

	dev = __dev_get_by_name(dev_net(bond->dev), ifname);
	if (!dev) {
		netdev_info(bond->dev, "interface %s does not exist!\n",
			    ifname);
		ret = -ENODEV;
		goto out;
	}

	switch (command[0]) {
	case '+':
		netdev_info(bond->dev, "Adding slave %s\n", dev->name);
		ret = bond_enslave(bond->dev, dev);
		break;

	case '-':
		netdev_info(bond->dev, "Removing slave %s\n", dev->name);
		ret = bond_release(bond->dev, dev);
		break;

	default:
		goto err_no_cmd;
	}

out:
	return ret;

err_no_cmd:
	netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
	ret = -EPERM;
	goto out;
}

static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
					  const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
		    newval->string, newval->value);
	bond->params.tlb_dynamic_lb = newval->value;

	return 0;
}

static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
					     const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
		    newval->value);

	bond->params.ad_actor_sys_prio = newval->value;
	bond_3ad_update_ad_actor_settings(bond);

	return 0;
}

static int bond_option_ad_actor_system_set(struct bonding *bond,
					   const struct bond_opt_value *newval)
{
	u8 macaddr[ETH_ALEN];
	u8 *mac;
	int i;

	if (newval->string) {
		i = sscanf(newval->string, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
			   &macaddr[0], &macaddr[1], &macaddr[2],
			   &macaddr[3], &macaddr[4], &macaddr[5]);
		if (i != ETH_ALEN)
			goto err;
		mac = macaddr;
	} else {
		mac = (u8 *)&newval->value;
	}

	if (!is_valid_ether_addr(mac))
		goto err;

	netdev_info(bond->dev, "Setting ad_actor_system to %pM\n", mac);
	ether_addr_copy(bond->params.ad_actor_system, mac);
	bond_3ad_update_ad_actor_settings(bond);

	return 0;

err:
	netdev_err(bond->dev, "Invalid MAC address.\n");
	return -EINVAL;
}

static int bond_option_ad_user_port_key_set(struct bonding *bond,
					    const struct bond_opt_value *newval)
{
	netdev_info(bond->dev, "Setting ad_user_port_key to %llu\n",
		    newval->value);

	bond->params.ad_user_port_key = newval->value;
	return 0;
}
OpenPOWER on IntegriCloud