aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
blob: 97c85b859536bf1bfd0aa7b3e323dfd7a28e00b1 (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
/*******************************************************************************

  Intel 10 Gigabit PCI Express Linux driver
  Copyright(c) 1999 - 2014 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information:
  Linux NICS <linux.nics@intel.com>
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/vmalloc.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/ipv6.h>
#ifdef NETIF_F_HW_VLAN_CTAG_TX
#include <linux/if_vlan.h>
#endif

#include "ixgbe.h"
#include "ixgbe_type.h"
#include "ixgbe_sriov.h"

#ifdef CONFIG_PCI_IOV
static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;
	int num_vf_macvlans, i;
	struct vf_macvlans *mv_list;

	adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
	e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);

	/* Enable VMDq flag so device will be set in VM mode */
	adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
	if (!adapter->ring_feature[RING_F_VMDQ].limit)
		adapter->ring_feature[RING_F_VMDQ].limit = 1;
	adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;

	num_vf_macvlans = hw->mac.num_rar_entries -
	(IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);

	adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
					     sizeof(struct vf_macvlans),
					     GFP_KERNEL);
	if (mv_list) {
		/* Initialize list of VF macvlans */
		INIT_LIST_HEAD(&adapter->vf_mvs.l);
		for (i = 0; i < num_vf_macvlans; i++) {
			mv_list->vf = -1;
			mv_list->free = true;
			list_add(&mv_list->l, &adapter->vf_mvs.l);
			mv_list++;
		}
	}

	/* Initialize default switching mode VEB */
	IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
	adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;

	/* If call to enable VFs succeeded then allocate memory
	 * for per VF control structures.
	 */
	adapter->vfinfo =
		kcalloc(adapter->num_vfs,
			sizeof(struct vf_data_storage), GFP_KERNEL);
	if (adapter->vfinfo) {
		/* limit trafffic classes based on VFs enabled */
		if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
		    (adapter->num_vfs < 16)) {
			adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
			adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
		} else if (adapter->num_vfs < 32) {
			adapter->dcb_cfg.num_tcs.pg_tcs = 4;
			adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
		} else {
			adapter->dcb_cfg.num_tcs.pg_tcs = 1;
			adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
		}

		/* We do not support RSS w/ SR-IOV */
		adapter->ring_feature[RING_F_RSS].limit = 1;

		/* Disable RSC when in SR-IOV mode */
		adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
				     IXGBE_FLAG2_RSC_ENABLED);

		/* enable spoof checking for all VFs */
		for (i = 0; i < adapter->num_vfs; i++)
			adapter->vfinfo[i].spoofchk_enabled = true;
		return 0;
	}

	return -ENOMEM;
}

/* Note this function is called when the user wants to enable SR-IOV
 * VFs using the now deprecated module parameter
 */
void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
{
	int pre_existing_vfs = 0;

	pre_existing_vfs = pci_num_vf(adapter->pdev);
	if (!pre_existing_vfs && !adapter->num_vfs)
		return;

	/* If there are pre-existing VFs then we have to force
	 * use of that many - over ride any module parameter value.
	 * This may result from the user unloading the PF driver
	 * while VFs were assigned to guest VMs or because the VFs
	 * have been created via the new PCI SR-IOV sysfs interface.
	 */
	if (pre_existing_vfs) {
		adapter->num_vfs = pre_existing_vfs;
		dev_warn(&adapter->pdev->dev,
			 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
	} else {
		int err;
		/*
		 * The 82599 supports up to 64 VFs per physical function
		 * but this implementation limits allocation to 63 so that
		 * basic networking resources are still available to the
		 * physical function.  If the user requests greater thn
		 * 63 VFs then it is an error - reset to default of zero.
		 */
		adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);

		err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
		if (err) {
			e_err(probe, "Failed to enable PCI sriov: %d\n", err);
			adapter->num_vfs = 0;
			return;
		}
	}

	if (!__ixgbe_enable_sriov(adapter))
		return;

	/* If we have gotten to this point then there is no memory available
	 * to manage the VF devices - print message and bail.
	 */
	e_err(probe, "Unable to allocate memory for VF Data Storage - "
	      "SRIOV disabled\n");
	ixgbe_disable_sriov(adapter);
}

#endif /* #ifdef CONFIG_PCI_IOV */
int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;
	u32 gpie;
	u32 vmdctl;
	int rss;

	/* set num VFs to 0 to prevent access to vfinfo */
	adapter->num_vfs = 0;

	/* free VF control structures */
	kfree(adapter->vfinfo);
	adapter->vfinfo = NULL;

	/* free macvlan list */
	kfree(adapter->mv_list);
	adapter->mv_list = NULL;

	/* if SR-IOV is already disabled then there is nothing to do */
	if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
		return 0;

#ifdef CONFIG_PCI_IOV
	/*
	 * If our VFs are assigned we cannot shut down SR-IOV
	 * without causing issues, so just leave the hardware
	 * available but disabled
	 */
	if (pci_vfs_assigned(adapter->pdev)) {
		e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
		return -EPERM;
	}
	/* disable iov and allow time for transactions to clear */
	pci_disable_sriov(adapter->pdev);
#endif

	/* turn off device IOV mode */
	IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
	gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
	gpie &= ~IXGBE_GPIE_VTMODE_MASK;
	IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);

	/* set default pool back to 0 */
	vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
	vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
	IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
	IXGBE_WRITE_FLUSH(hw);

	/* Disable VMDq flag so device will be set in VM mode */
	if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
		adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
		adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
		rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
	} else {
		rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
	}

	adapter->ring_feature[RING_F_VMDQ].offset = 0;
	adapter->ring_feature[RING_F_RSS].limit = rss;

	/* take a breather then clean up driver data */
	msleep(100);
	return 0;
}

static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
{
#ifdef CONFIG_PCI_IOV
	struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
	int err = 0;
	int i;
	int pre_existing_vfs = pci_num_vf(dev);

	if (pre_existing_vfs && pre_existing_vfs != num_vfs)
		err = ixgbe_disable_sriov(adapter);
	else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
		return num_vfs;

	if (err)
		return err;

	/* While the SR-IOV capability structure reports total VFs to be 64,
	 * we have to limit the actual number allocated based on two factors.
	 * First, we reserve some transmit/receive resources for the PF.
	 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
	 * account for this, so that we don't accidentally allocate more VFs
	 * than we have available pools. The PCI bus driver already checks for
	 * other values out of range.
	 */
	if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS)
		return -EPERM;

	adapter->num_vfs = num_vfs;

	err = __ixgbe_enable_sriov(adapter);
	if (err)
		return  err;

	for (i = 0; i < adapter->num_vfs; i++)
		ixgbe_vf_configuration(dev, (i | 0x10000000));

	err = pci_enable_sriov(dev, num_vfs);
	if (err) {
		e_dev_warn("Failed to enable PCI sriov: %d\n", err);
		return err;
	}
	ixgbe_sriov_reinit(adapter);

	return num_vfs;
#else
	return 0;
#endif
}

static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
{
	struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
	int err;
#ifdef CONFIG_PCI_IOV
	u32 current_flags = adapter->flags;
#endif

	err = ixgbe_disable_sriov(adapter);

	/* Only reinit if no error and state changed */
#ifdef CONFIG_PCI_IOV
	if (!err && current_flags != adapter->flags)
		ixgbe_sriov_reinit(adapter);
#endif

	return err;
}

int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
{
	if (num_vfs == 0)
		return ixgbe_pci_sriov_disable(dev);
	else
		return ixgbe_pci_sriov_enable(dev, num_vfs);
}

static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
				   u32 *msgbuf, u32 vf)
{
	int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
		       >> IXGBE_VT_MSGINFO_SHIFT;
	u16 *hash_list = (u16 *)&msgbuf[1];
	struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
	struct ixgbe_hw *hw = &adapter->hw;
	int i;
	u32 vector_bit;
	u32 vector_reg;
	u32 mta_reg;
	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));

	/* only so many hash values supported */
	entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);

	/*
	 * salt away the number of multi cast addresses assigned
	 * to this VF for later use to restore when the PF multi cast
	 * list changes
	 */
	vfinfo->num_vf_mc_hashes = entries;

	/*
	 * VFs are limited to using the MTA hash table for their multicast
	 * addresses
	 */
	for (i = 0; i < entries; i++) {
		vfinfo->vf_mc_hashes[i] = hash_list[i];
	}

	for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
		vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
		vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
		mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
		mta_reg |= (1 << vector_bit);
		IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
	}
	vmolr |= IXGBE_VMOLR_ROMPE;
	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);

	return 0;
}

#ifdef CONFIG_PCI_IOV
void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;
	struct vf_data_storage *vfinfo;
	int i, j;
	u32 vector_bit;
	u32 vector_reg;
	u32 mta_reg;

	for (i = 0; i < adapter->num_vfs; i++) {
		u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
		vfinfo = &adapter->vfinfo[i];
		for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
			hw->addr_ctrl.mta_in_use++;
			vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
			vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
			mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
			mta_reg |= (1 << vector_bit);
			IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
		}

		if (vfinfo->num_vf_mc_hashes)
			vmolr |= IXGBE_VMOLR_ROMPE;
		else
			vmolr &= ~IXGBE_VMOLR_ROMPE;
		IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
	}

	/* Restore any VF macvlans */
	ixgbe_full_sync_mac_table(adapter);
}
#endif

static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
			     u32 vf)
{
	/* VLAN 0 is a special case, don't allow it to be removed */
	if (!vid && !add)
		return 0;

	return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
}

static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
{
	struct ixgbe_hw *hw = &adapter->hw;
	int max_frame = msgbuf[1];
	u32 max_frs;

	/*
	 * For 82599EB we have to keep all PFs and VFs operating with
	 * the same max_frame value in order to avoid sending an oversize
	 * frame to a VF.  In order to guarantee this is handled correctly
	 * for all cases we have several special exceptions to take into
	 * account before we can enable the VF for receive
	 */
	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
		struct net_device *dev = adapter->netdev;
		int pf_max_frame = dev->mtu + ETH_HLEN;
		u32 reg_offset, vf_shift, vfre;
		s32 err = 0;

#ifdef CONFIG_FCOE
		if (dev->features & NETIF_F_FCOE_MTU)
			pf_max_frame = max_t(int, pf_max_frame,
					     IXGBE_FCOE_JUMBO_FRAME_SIZE);

#endif /* CONFIG_FCOE */
		switch (adapter->vfinfo[vf].vf_api) {
		case ixgbe_mbox_api_11:
			/*
			 * Version 1.1 supports jumbo frames on VFs if PF has
			 * jumbo frames enabled which means legacy VFs are
			 * disabled
			 */
			if (pf_max_frame > ETH_FRAME_LEN)
				break;
		default:
			/*
			 * If the PF or VF are running w/ jumbo frames enabled
			 * we need to shut down the VF Rx path as we cannot
			 * support jumbo frames on legacy VFs
			 */
			if ((pf_max_frame > ETH_FRAME_LEN) ||
			    (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
				err = -EINVAL;
			break;
		}

		/* determine VF receive enable location */
		vf_shift = vf % 32;
		reg_offset = vf / 32;

		/* enable or disable receive depending on error */
		vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
		if (err)
			vfre &= ~(1 << vf_shift);
		else
			vfre |= 1 << vf_shift;
		IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);

		if (err) {
			e_err(drv, "VF max_frame %d out of range\n", max_frame);
			return err;
		}
	}

	/* MTU < 68 is an error and causes problems on some kernels */
	if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
		e_err(drv, "VF max_frame %d out of range\n", max_frame);
		return -EINVAL;
	}

	/* pull current max frame size from hardware */
	max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
	max_frs &= IXGBE_MHADD_MFS_MASK;
	max_frs >>= IXGBE_MHADD_MFS_SHIFT;

	if (max_frs < max_frame) {
		max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
		IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
	}

	e_info(hw, "VF requests change max MTU to %d\n", max_frame);

	return 0;
}

static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
{
	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
	vmolr |= IXGBE_VMOLR_BAM;
	if (aupe)
		vmolr |= IXGBE_VMOLR_AUPE;
	else
		vmolr &= ~IXGBE_VMOLR_AUPE;
	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
}

static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
{
	struct ixgbe_hw *hw = &adapter->hw;

	IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
}
static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
{
	struct ixgbe_hw *hw = &adapter->hw;
	struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
	u8 num_tcs = netdev_get_num_tc(adapter->netdev);

	/* add PF assigned VLAN or VLAN 0 */
	ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);

	/* reset offloads to defaults */
	ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);

	/* set outgoing tags for VFs */
	if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
		ixgbe_clear_vmvir(adapter, vf);
	} else {
		if (vfinfo->pf_qos || !num_tcs)
			ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
					vfinfo->pf_qos, vf);
		else
			ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
					adapter->default_up, vf);

		if (vfinfo->spoofchk_enabled)
			hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
	}

	/* reset multicast table array for vf */
	adapter->vfinfo[vf].num_vf_mc_hashes = 0;

	/* Flush and reset the mta with the new values */
	ixgbe_set_rx_mode(adapter->netdev);

	ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);

	/* reset VF api back to unknown */
	adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
}

static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
			    int vf, unsigned char *mac_addr)
{
	ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
	memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
	ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);

	return 0;
}

static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
				int vf, int index, unsigned char *mac_addr)
{
	struct list_head *pos;
	struct vf_macvlans *entry;

	if (index <= 1) {
		list_for_each(pos, &adapter->vf_mvs.l) {
			entry = list_entry(pos, struct vf_macvlans, l);
			if (entry->vf == vf) {
				entry->vf = -1;
				entry->free = true;
				entry->is_macvlan = false;
				ixgbe_del_mac_filter(adapter,
						     entry->vf_macvlan, vf);
			}
		}
	}

	/*
	 * If index was zero then we were asked to clear the uc list
	 * for the VF.  We're done.
	 */
	if (!index)
		return 0;

	entry = NULL;

	list_for_each(pos, &adapter->vf_mvs.l) {
		entry = list_entry(pos, struct vf_macvlans, l);
		if (entry->free)
			break;
	}

	/*
	 * If we traversed the entire list and didn't find a free entry
	 * then we're out of space on the RAR table.  Also entry may
	 * be NULL because the original memory allocation for the list
	 * failed, which is not fatal but does mean we can't support
	 * VF requests for MACVLAN because we couldn't allocate
	 * memory for the list management required.
	 */
	if (!entry || !entry->free)
		return -ENOSPC;

	entry->free = false;
	entry->is_macvlan = true;
	entry->vf = vf;
	memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);

	ixgbe_add_mac_filter(adapter, mac_addr, vf);

	return 0;
}

int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
{
	struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
	unsigned int vfn = (event_mask & 0x3f);

	bool enable = ((event_mask & 0x10000000U) != 0);

	if (enable)
		eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);

	return 0;
}

static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
{
	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
	struct ixgbe_hw *hw = &adapter->hw;
	unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
	u32 reg, reg_offset, vf_shift;
	u32 msgbuf[4] = {0, 0, 0, 0};
	u8 *addr = (u8 *)(&msgbuf[1]);
	u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
	int i;

	e_info(probe, "VF Reset msg received from vf %d\n", vf);

	/* reset the filters for the device */
	ixgbe_vf_reset_event(adapter, vf);

	/* set vf mac address */
	if (!is_zero_ether_addr(vf_mac))
		ixgbe_set_vf_mac(adapter, vf, vf_mac);

	vf_shift = vf % 32;
	reg_offset = vf / 32;

	/* enable transmit for vf */
	reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
	reg |= 1 << vf_shift;
	IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);

	/* force drop enable for all VF Rx queues */
	for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
		/* flush previous write */
		IXGBE_WRITE_FLUSH(hw);

		/* indicate to hardware that we want to set drop enable */
		reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
		reg |= i <<  IXGBE_QDE_IDX_SHIFT;
		IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
	}

	/* enable receive for vf */
	reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
	reg |= 1 << vf_shift;
	/*
	 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
	 * For more info take a look at ixgbe_set_vf_lpe
	 */
	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
		struct net_device *dev = adapter->netdev;
		int pf_max_frame = dev->mtu + ETH_HLEN;

#ifdef CONFIG_FCOE
		if (dev->features & NETIF_F_FCOE_MTU)
			pf_max_frame = max_t(int, pf_max_frame,
					     IXGBE_FCOE_JUMBO_FRAME_SIZE);

#endif /* CONFIG_FCOE */
		if (pf_max_frame > ETH_FRAME_LEN)
			reg &= ~(1 << vf_shift);
	}
	IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);

	/* enable VF mailbox for further messages */
	adapter->vfinfo[vf].clear_to_send = true;

	/* Enable counting of spoofed packets in the SSVPC register */
	reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
	reg |= (1 << vf_shift);
	IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);

	/*
	 * Reset the VFs TDWBAL and TDWBAH registers
	 * which are not cleared by an FLR
	 */
	for (i = 0; i < q_per_pool; i++) {
		IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
		IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
	}

	/* reply to reset with ack and vf mac address */
	msgbuf[0] = IXGBE_VF_RESET;
	if (!is_zero_ether_addr(vf_mac)) {
		msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
		memcpy(addr, vf_mac, ETH_ALEN);
	} else {
		msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
		dev_warn(&adapter->pdev->dev,
			 "VF %d has no MAC address assigned, you may have to assign one manually\n",
			 vf);
	}

	/*
	 * Piggyback the multicast filter type so VF can compute the
	 * correct vectors
	 */
	msgbuf[3] = hw->mac.mc_filter_type;
	ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);

	return 0;
}

static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
				 u32 *msgbuf, u32 vf)
{
	u8 *new_mac = ((u8 *)(&msgbuf[1]));

	if (!is_valid_ether_addr(new_mac)) {
		e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
		return -1;
	}

	if (adapter->vfinfo[vf].pf_set_mac &&
	    !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
		e_warn(drv,
		       "VF %d attempted to override administratively set MAC address\n"
		       "Reload the VF driver to resume operations\n",
		       vf);
		return -1;
	}

	return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
}

static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
{
	u32 vlvf;
	s32 regindex;

	/* short cut the special case */
	if (vlan == 0)
		return 0;

	/* Search for the vlan id in the VLVF entries */
	for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
		vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
		if ((vlvf & VLAN_VID_MASK) == vlan)
			break;
	}

	/* Return a negative value if not found */
	if (regindex >= IXGBE_VLVF_ENTRIES)
		regindex = -1;

	return regindex;
}

static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
				 u32 *msgbuf, u32 vf)
{
	struct ixgbe_hw *hw = &adapter->hw;
	int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
	int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
	int err;
	s32 reg_ndx;
	u32 vlvf;
	u32 bits;
	u8 tcs = netdev_get_num_tc(adapter->netdev);

	if (adapter->vfinfo[vf].pf_vlan || tcs) {
		e_warn(drv,
		       "VF %d attempted to override administratively set VLAN configuration\n"
		       "Reload the VF driver to resume operations\n",
		       vf);
		return -1;
	}

	if (add)
		adapter->vfinfo[vf].vlan_count++;
	else if (adapter->vfinfo[vf].vlan_count)
		adapter->vfinfo[vf].vlan_count--;

	/* in case of promiscuous mode any VLAN filter set for a VF must
	 * also have the PF pool added to it.
	 */
	if (add && adapter->netdev->flags & IFF_PROMISC)
		err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));

	err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
	if (!err && adapter->vfinfo[vf].spoofchk_enabled)
		hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);

	/* Go through all the checks to see if the VLAN filter should
	 * be wiped completely.
	 */
	if (!add && adapter->netdev->flags & IFF_PROMISC) {
		reg_ndx = ixgbe_find_vlvf_entry(hw, vid);
		if (reg_ndx < 0)
			return err;
		vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx));
		/* See if any other pools are set for this VLAN filter
		 * entry other than the PF.
		 */
		if (VMDQ_P(0) < 32) {
			bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
			bits &= ~(1 << VMDQ_P(0));
			bits |= IXGBE_READ_REG(hw,
					       IXGBE_VLVFB(reg_ndx * 2) + 1);
		} else {
			bits = IXGBE_READ_REG(hw,
					      IXGBE_VLVFB(reg_ndx * 2) + 1);
			bits &= ~(1 << (VMDQ_P(0) - 32));
			bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
		}

		/* If the filter was removed then ensure PF pool bit
		 * is cleared if the PF only added itself to the pool
		 * because the PF is in promiscuous mode.
		 */
		if ((vlvf & VLAN_VID_MASK) == vid &&
		    !test_bit(vid, adapter->active_vlans) && !bits)
			ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
	}

	return err;
}

static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
				    u32 *msgbuf, u32 vf)
{
	u8 *new_mac = ((u8 *)(&msgbuf[1]));
	int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
		    IXGBE_VT_MSGINFO_SHIFT;
	int err;

	if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
		e_warn(drv,
		       "VF %d requested MACVLAN filter but is administratively denied\n",
		       vf);
		return -1;
	}

	/* An non-zero index indicates the VF is setting a filter */
	if (index) {
		if (!is_valid_ether_addr(new_mac)) {
			e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
			return -1;
		}

		/*
		 * If the VF is allowed to set MAC filters then turn off
		 * anti-spoofing to avoid false positives.
		 */
		if (adapter->vfinfo[vf].spoofchk_enabled)
			ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
	}

	err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
	if (err == -ENOSPC)
		e_warn(drv,
		       "VF %d has requested a MACVLAN filter but there is no space for it\n",
		       vf);

	return err < 0;
}

static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
				  u32 *msgbuf, u32 vf)
{
	int api = msgbuf[1];

	switch (api) {
	case ixgbe_mbox_api_10:
	case ixgbe_mbox_api_11:
		adapter->vfinfo[vf].vf_api = api;
		return 0;
	default:
		break;
	}

	e_info(drv, "VF %d requested invalid api version %u\n", vf, api);

	return -1;
}

static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
			       u32 *msgbuf, u32 vf)
{
	struct net_device *dev = adapter->netdev;
	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
	unsigned int default_tc = 0;
	u8 num_tcs = netdev_get_num_tc(dev);

	/* verify the PF is supporting the correct APIs */
	switch (adapter->vfinfo[vf].vf_api) {
	case ixgbe_mbox_api_20:
	case ixgbe_mbox_api_11:
		break;
	default:
		return -1;
	}

	/* only allow 1 Tx queue for bandwidth limiting */
	msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
	msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);

	/* if TCs > 1 determine which TC belongs to default user priority */
	if (num_tcs > 1)
		default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);

	/* notify VF of need for VLAN tag stripping, and correct queue */
	if (num_tcs)
		msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
	else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
		msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
	else
		msgbuf[IXGBE_VF_TRANS_VLAN] = 0;

	/* notify VF of default queue */
	msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;

	return 0;
}

static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
{
	u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
	u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
	struct ixgbe_hw *hw = &adapter->hw;
	s32 retval;

	retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);

	if (retval) {
		pr_err("Error receiving message from VF\n");
		return retval;
	}

	/* this is a message we already processed, do nothing */
	if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
		return 0;

	/* flush the ack before we write any messages back */
	IXGBE_WRITE_FLUSH(hw);

	if (msgbuf[0] == IXGBE_VF_RESET)
		return ixgbe_vf_reset_msg(adapter, vf);

	/*
	 * until the vf completes a virtual function reset it should not be
	 * allowed to start any configuration.
	 */
	if (!adapter->vfinfo[vf].clear_to_send) {
		msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
		ixgbe_write_mbx(hw, msgbuf, 1, vf);
		return 0;
	}

	switch ((msgbuf[0] & 0xFFFF)) {
	case IXGBE_VF_SET_MAC_ADDR:
		retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
		break;
	case IXGBE_VF_SET_MULTICAST:
		retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
		break;
	case IXGBE_VF_SET_VLAN:
		retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
		break;
	case IXGBE_VF_SET_LPE:
		retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
		break;
	case IXGBE_VF_SET_MACVLAN:
		retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
		break;
	case IXGBE_VF_API_NEGOTIATE:
		retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
		break;
	case IXGBE_VF_GET_QUEUES:
		retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
		break;
	default:
		e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
		retval = IXGBE_ERR_MBX;
		break;
	}

	/* notify the VF of the results of what it sent us */
	if (retval)
		msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
	else
		msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;

	msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;

	ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);

	return retval;
}

static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
{
	struct ixgbe_hw *hw = &adapter->hw;
	u32 msg = IXGBE_VT_MSGTYPE_NACK;

	/* if device isn't clear to send it shouldn't be reading either */
	if (!adapter->vfinfo[vf].clear_to_send)
		ixgbe_write_mbx(hw, &msg, 1, vf);
}

void ixgbe_msg_task(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;
	u32 vf;

	for (vf = 0; vf < adapter->num_vfs; vf++) {
		/* process any reset requests */
		if (!ixgbe_check_for_rst(hw, vf))
			ixgbe_vf_reset_event(adapter, vf);

		/* process any messages pending */
		if (!ixgbe_check_for_msg(hw, vf))
			ixgbe_rcv_msg_from_vf(adapter, vf);

		/* process any acks */
		if (!ixgbe_check_for_ack(hw, vf))
			ixgbe_rcv_ack_from_vf(adapter, vf);
	}
}

void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;

	/* disable transmit and receive for all vfs */
	IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
	IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);

	IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
	IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
}

void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
{
	struct ixgbe_hw *hw = &adapter->hw;
	u32 ping;
	int i;

	for (i = 0 ; i < adapter->num_vfs; i++) {
		ping = IXGBE_PF_CONTROL_MSG;
		if (adapter->vfinfo[i].clear_to_send)
			ping |= IXGBE_VT_MSGTYPE_CTS;
		ixgbe_write_mbx(hw, &ping, 1, i);
	}
}

int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
		return -EINVAL;
	adapter->vfinfo[vf].pf_set_mac = true;
	dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
	dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
				      " change effective.");
	if (test_bit(__IXGBE_DOWN, &adapter->state)) {
		dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
			 " but the PF device is not up.\n");
		dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
			 " attempting to use the VF device.\n");
	}
	return ixgbe_set_vf_mac(adapter, vf, mac);
}

int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
{
	int err = 0;
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;

	if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
		return -EINVAL;
	if (vlan || qos) {
		if (adapter->vfinfo[vf].pf_vlan)
			err = ixgbe_set_vf_vlan(adapter, false,
						adapter->vfinfo[vf].pf_vlan,
						vf);
		if (err)
			goto out;
		err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
		if (err)
			goto out;
		ixgbe_set_vmvir(adapter, vlan, qos, vf);
		ixgbe_set_vmolr(hw, vf, false);
		if (adapter->vfinfo[vf].spoofchk_enabled)
			hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
		adapter->vfinfo[vf].vlan_count++;
		adapter->vfinfo[vf].pf_vlan = vlan;
		adapter->vfinfo[vf].pf_qos = qos;
		dev_info(&adapter->pdev->dev,
			 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
		if (test_bit(__IXGBE_DOWN, &adapter->state)) {
			dev_warn(&adapter->pdev->dev,
				 "The VF VLAN has been set,"
				 " but the PF device is not up.\n");
			dev_warn(&adapter->pdev->dev,
				 "Bring the PF device up before"
				 " attempting to use the VF device.\n");
		}
	} else {
		err = ixgbe_set_vf_vlan(adapter, false,
					adapter->vfinfo[vf].pf_vlan, vf);
		ixgbe_clear_vmvir(adapter, vf);
		ixgbe_set_vmolr(hw, vf, true);
		hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
		if (adapter->vfinfo[vf].vlan_count)
			adapter->vfinfo[vf].vlan_count--;
		adapter->vfinfo[vf].pf_vlan = 0;
		adapter->vfinfo[vf].pf_qos = 0;
	}
out:
	return err;
}

static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
{
	switch (adapter->link_speed) {
	case IXGBE_LINK_SPEED_100_FULL:
		return 100;
	case IXGBE_LINK_SPEED_1GB_FULL:
		return 1000;
	case IXGBE_LINK_SPEED_10GB_FULL:
		return 10000;
	default:
		return 0;
	}
}

static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
{
	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
	struct ixgbe_hw *hw = &adapter->hw;
	u32 bcnrc_val = 0;
	u16 queue, queues_per_pool;
	u16 tx_rate = adapter->vfinfo[vf].tx_rate;

	if (tx_rate) {
		/* start with base link speed value */
		bcnrc_val = adapter->vf_rate_link_speed;

		/* Calculate the rate factor values to set */
		bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
		bcnrc_val /= tx_rate;

		/* clear everything but the rate factor */
		bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
			     IXGBE_RTTBCNRC_RF_DEC_MASK;

		/* enable the rate scheduler */
		bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
	}

	/*
	 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
	 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
	 * and 0x004 otherwise.
	 */
	switch (hw->mac.type) {
	case ixgbe_mac_82599EB:
		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
		break;
	case ixgbe_mac_X540:
		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
		break;
	default:
		break;
	}

	/* determine how many queues per pool based on VMDq mask */
	queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);

	/* write value for all Tx queues belonging to VF */
	for (queue = 0; queue < queues_per_pool; queue++) {
		unsigned int reg_idx = (vf * queues_per_pool) + queue;

		IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
		IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
	}
}

void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
{
	int i;

	/* VF Tx rate limit was not set */
	if (!adapter->vf_rate_link_speed)
		return;

	if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
		adapter->vf_rate_link_speed = 0;
		dev_info(&adapter->pdev->dev,
			 "Link speed has been changed. VF Transmit rate is disabled\n");
	}

	for (i = 0; i < adapter->num_vfs; i++) {
		if (!adapter->vf_rate_link_speed)
			adapter->vfinfo[i].tx_rate = 0;

		ixgbe_set_vf_rate_limit(adapter, i);
	}
}

int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
			int max_tx_rate)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	int link_speed;

	/* verify VF is active */
	if (vf >= adapter->num_vfs)
		return -EINVAL;

	/* verify link is up */
	if (!adapter->link_up)
		return -EINVAL;

	/* verify we are linked at 10Gbps */
	link_speed = ixgbe_link_mbps(adapter);
	if (link_speed != 10000)
		return -EINVAL;

	if (min_tx_rate)
		return -EINVAL;

	/* rate limit cannot be less than 10Mbs or greater than link speed */
	if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
		return -EINVAL;

	/* store values */
	adapter->vf_rate_link_speed = link_speed;
	adapter->vfinfo[vf].tx_rate = max_tx_rate;

	/* update hardware configuration */
	ixgbe_set_vf_rate_limit(adapter, vf);

	return 0;
}

int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	int vf_target_reg = vf >> 3;
	int vf_target_shift = vf % 8;
	struct ixgbe_hw *hw = &adapter->hw;
	u32 regval;

	if (vf >= adapter->num_vfs)
		return -EINVAL;

	adapter->vfinfo[vf].spoofchk_enabled = setting;

	regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
	regval &= ~(1 << vf_target_shift);
	regval |= (setting << vf_target_shift);
	IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);

	if (adapter->vfinfo[vf].vlan_count) {
		vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
		regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
		regval &= ~(1 << vf_target_shift);
		regval |= (setting << vf_target_shift);
		IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
	}

	return 0;
}

int ixgbe_ndo_get_vf_config(struct net_device *netdev,
			    int vf, struct ifla_vf_info *ivi)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	if (vf >= adapter->num_vfs)
		return -EINVAL;
	ivi->vf = vf;
	memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
	ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
	ivi->min_tx_rate = 0;
	ivi->vlan = adapter->vfinfo[vf].pf_vlan;
	ivi->qos = adapter->vfinfo[vf].pf_qos;
	ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
	return 0;
}

Privacy Policy