summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/intel/ice/ice_vf_lib.c
blob: 9dbe6e9bb1f798ea82e73bc1a7fce7797c96b402 (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
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2022, Intel Corporation. */

#include "ice_vf_lib_private.h"
#include "ice.h"
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice_virtchnl_allowlist.h"

/* Public functions which may be accessed by all driver files */

/**
 * ice_get_vf_by_id - Get pointer to VF by ID
 * @pf: the PF private structure
 * @vf_id: the VF ID to locate
 *
 * Locate and return a pointer to the VF structure associated with a given ID.
 * Returns NULL if the ID does not have a valid VF structure associated with
 * it.
 *
 * This function takes a reference to the VF, which must be released by
 * calling ice_put_vf() once the caller is finished accessing the VF structure
 * returned.
 */
struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id)
{
	struct ice_vf *vf;

	rcu_read_lock();
	hash_for_each_possible_rcu(pf->vfs.table, vf, entry, vf_id) {
		if (vf->vf_id == vf_id) {
			struct ice_vf *found;

			if (kref_get_unless_zero(&vf->refcnt))
				found = vf;
			else
				found = NULL;

			rcu_read_unlock();
			return found;
		}
	}
	rcu_read_unlock();

	return NULL;
}

/**
 * ice_release_vf - Release VF associated with a refcount
 * @ref: the kref decremented to zero
 *
 * Callback function for kref_put to release a VF once its reference count has
 * hit zero.
 */
static void ice_release_vf(struct kref *ref)
{
	struct ice_vf *vf = container_of(ref, struct ice_vf, refcnt);

	vf->vf_ops->free(vf);
}

/**
 * ice_put_vf - Release a reference to a VF
 * @vf: the VF structure to decrease reference count on
 *
 * Decrease the reference count for a VF, and free the entry if it is no
 * longer in use.
 *
 * This must be called after ice_get_vf_by_id() once the reference to the VF
 * structure is no longer used. Otherwise, the VF structure will never be
 * freed.
 */
void ice_put_vf(struct ice_vf *vf)
{
	kref_put(&vf->refcnt, ice_release_vf);
}

/**
 * ice_has_vfs - Return true if the PF has any associated VFs
 * @pf: the PF private structure
 *
 * Return whether or not the PF has any allocated VFs.
 *
 * Note that this function only guarantees that there are no VFs at the point
 * of calling it. It does not guarantee that no more VFs will be added.
 */
bool ice_has_vfs(struct ice_pf *pf)
{
	/* A simple check that the hash table is not empty does not require
	 * the mutex or rcu_read_lock.
	 */
	return !hash_empty(pf->vfs.table);
}

/**
 * ice_get_num_vfs - Get number of allocated VFs
 * @pf: the PF private structure
 *
 * Return the total number of allocated VFs. NOTE: VF IDs are not guaranteed
 * to be contiguous. Do not assume that a VF ID is guaranteed to be less than
 * the output of this function.
 */
u16 ice_get_num_vfs(struct ice_pf *pf)
{
	struct ice_vf *vf;
	unsigned int bkt;
	u16 num_vfs = 0;

	rcu_read_lock();
	ice_for_each_vf_rcu(pf, bkt, vf)
		num_vfs++;
	rcu_read_unlock();

	return num_vfs;
}

/**
 * ice_get_vf_vsi - get VF's VSI based on the stored index
 * @vf: VF used to get VSI
 */
struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf)
{
	if (vf->lan_vsi_idx == ICE_NO_VSI)
		return NULL;

	return vf->pf->vsi[vf->lan_vsi_idx];
}

/**
 * ice_is_vf_disabled
 * @vf: pointer to the VF info
 *
 * If the PF has been disabled, there is no need resetting VF until PF is
 * active again. Similarly, if the VF has been disabled, this means something
 * else is resetting the VF, so we shouldn't continue.
 *
 * Returns true if the caller should consider the VF as disabled whether
 * because that single VF is explicitly disabled or because the PF is
 * currently disabled.
 */
bool ice_is_vf_disabled(struct ice_vf *vf)
{
	struct ice_pf *pf = vf->pf;

	return (test_bit(ICE_VF_DIS, pf->state) ||
		test_bit(ICE_VF_STATE_DIS, vf->vf_states));
}

/**
 * ice_wait_on_vf_reset - poll to make sure a given VF is ready after reset
 * @vf: The VF being resseting
 *
 * The max poll time is about ~800ms, which is about the maximum time it takes
 * for a VF to be reset and/or a VF driver to be removed.
 */
static void ice_wait_on_vf_reset(struct ice_vf *vf)
{
	int i;

	for (i = 0; i < ICE_MAX_VF_RESET_TRIES; i++) {
		if (test_bit(ICE_VF_STATE_INIT, vf->vf_states))
			break;
		msleep(ICE_MAX_VF_RESET_SLEEP_MS);
	}
}

/**
 * ice_check_vf_ready_for_cfg - check if VF is ready to be configured/queried
 * @vf: VF to check if it's ready to be configured/queried
 *
 * The purpose of this function is to make sure the VF is not in reset, not
 * disabled, and initialized so it can be configured and/or queried by a host
 * administrator.
 */
int ice_check_vf_ready_for_cfg(struct ice_vf *vf)
{
	ice_wait_on_vf_reset(vf);

	if (ice_is_vf_disabled(vf))
		return -EINVAL;

	if (ice_check_vf_init(vf))
		return -EBUSY;

	return 0;
}

/**
 * ice_trigger_vf_reset - Reset a VF on HW
 * @vf: pointer to the VF structure
 * @is_vflr: true if VFLR was issued, false if not
 * @is_pfr: true if the reset was triggered due to a previous PFR
 *
 * Trigger hardware to start a reset for a particular VF. Expects the caller
 * to wait the proper amount of time to allow hardware to reset the VF before
 * it cleans up and restores VF functionality.
 */
static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr)
{
	/* Inform VF that it is no longer active, as a warning */
	clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);

	/* Disable VF's configuration API during reset. The flag is re-enabled
	 * when it's safe again to access VF's VSI.
	 */
	clear_bit(ICE_VF_STATE_INIT, vf->vf_states);

	/* VF_MBX_ARQLEN and VF_MBX_ATQLEN are cleared by PFR, so the driver
	 * needs to clear them in the case of VFR/VFLR. If this is done for
	 * PFR, it can mess up VF resets because the VF driver may already
	 * have started cleanup by the time we get here.
	 */
	if (!is_pfr)
		vf->vf_ops->clear_mbx_register(vf);

	vf->vf_ops->trigger_reset_register(vf, is_vflr);
}

static void ice_vf_clear_counters(struct ice_vf *vf)
{
	struct ice_vsi *vsi = ice_get_vf_vsi(vf);

	if (vsi)
		vsi->num_vlan = 0;

	vf->num_mac = 0;
	memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events));
	memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events));
}

/**
 * ice_vf_pre_vsi_rebuild - tasks to be done prior to VSI rebuild
 * @vf: VF to perform pre VSI rebuild tasks
 *
 * These tasks are items that don't need to be amortized since they are most
 * likely called in a for loop with all VF(s) in the reset_all_vfs() case.
 */
static void ice_vf_pre_vsi_rebuild(struct ice_vf *vf)
{
	ice_vf_clear_counters(vf);
	vf->vf_ops->clear_reset_trigger(vf);
}

/**
 * ice_vf_rebuild_vsi - rebuild the VF's VSI
 * @vf: VF to rebuild the VSI for
 *
 * This is only called when all VF(s) are being reset (i.e. PCIe Reset on the
 * host, PFR, CORER, etc.).
 */
static int ice_vf_rebuild_vsi(struct ice_vf *vf)
{
	struct ice_vsi *vsi = ice_get_vf_vsi(vf);
	struct ice_pf *pf = vf->pf;

	if (WARN_ON(!vsi))
		return -EINVAL;

	if (ice_vsi_rebuild(vsi, true)) {
		dev_err(ice_pf_to_dev(pf), "failed to rebuild VF %d VSI\n",
			vf->vf_id);
		return -EIO;
	}
	/* vsi->idx will remain the same in this case so don't update
	 * vf->lan_vsi_idx
	 */
	vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);
	vf->lan_vsi_num = vsi->vsi_num;

	return 0;
}

/**
 * ice_is_any_vf_in_unicast_promisc - check if any VF(s)
 * are in unicast promiscuous mode
 * @pf: PF structure for accessing VF(s)
 *
 * Return false if no VF(s) are in unicast promiscuous mode,
 * else return true
 */
bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf)
{
	bool is_vf_promisc = false;
	struct ice_vf *vf;
	unsigned int bkt;

	rcu_read_lock();
	ice_for_each_vf_rcu(pf, bkt, vf) {
		/* found a VF that has promiscuous mode configured */
		if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states)) {
			is_vf_promisc = true;
			break;
		}
	}
	rcu_read_unlock();

	return is_vf_promisc;
}

/**
 * ice_vf_get_promisc_masks - Calculate masks for promiscuous modes
 * @vf: the VF pointer
 * @vsi: the VSI to configure
 * @ucast_m: promiscuous mask to apply to unicast
 * @mcast_m: promiscuous mask to apply to multicast
 *
 * Decide which mask should be used for unicast and multicast filter,
 * based on presence of VLANs
 */
void
ice_vf_get_promisc_masks(struct ice_vf *vf, struct ice_vsi *vsi,
			 u8 *ucast_m, u8 *mcast_m)
{
	if (ice_vf_is_port_vlan_ena(vf) ||
	    ice_vsi_has_non_zero_vlans(vsi)) {
		*mcast_m = ICE_MCAST_VLAN_PROMISC_BITS;
		*ucast_m = ICE_UCAST_VLAN_PROMISC_BITS;
	} else {
		*mcast_m = ICE_MCAST_PROMISC_BITS;
		*ucast_m = ICE_UCAST_PROMISC_BITS;
	}
}

/**
 * ice_vf_clear_all_promisc_modes - Clear promisc/allmulticast on VF VSI
 * @vf: the VF pointer
 * @vsi: the VSI to configure
 *
 * Clear all promiscuous/allmulticast filters for a VF
 */
static int
ice_vf_clear_all_promisc_modes(struct ice_vf *vf, struct ice_vsi *vsi)
{
	struct ice_pf *pf = vf->pf;
	u8 ucast_m, mcast_m;
	int ret = 0;

	ice_vf_get_promisc_masks(vf, vsi, &ucast_m, &mcast_m);
	if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states)) {
		if (!test_bit(ICE_FLAG_VF_TRUE_PROMISC_ENA, pf->flags)) {
			if (ice_is_dflt_vsi_in_use(vsi->port_info))
				ret = ice_clear_dflt_vsi(vsi);
		} else {
			ret = ice_vf_clear_vsi_promisc(vf, vsi, ucast_m);
		}

		if (ret) {
			dev_err(ice_pf_to_dev(vf->pf), "Disabling promiscuous mode failed\n");
		} else {
			clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
			dev_info(ice_pf_to_dev(vf->pf), "Disabling promiscuous mode succeeded\n");
		}
	}

	if (test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) {
		ret = ice_vf_clear_vsi_promisc(vf, vsi, mcast_m);
		if (ret) {
			dev_err(ice_pf_to_dev(vf->pf), "Disabling allmulticast mode failed\n");
		} else {
			clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
			dev_info(ice_pf_to_dev(vf->pf), "Disabling allmulticast mode succeeded\n");
		}
	}
	return ret;
}

/**
 * ice_vf_set_vsi_promisc - Enable promiscuous mode for a VF VSI
 * @vf: the VF to configure
 * @vsi: the VF's VSI
 * @promisc_m: the promiscuous mode to enable
 */
int
ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m)
{
	struct ice_hw *hw = &vsi->back->hw;
	int status;

	if (ice_vf_is_port_vlan_ena(vf))
		status = ice_fltr_set_vsi_promisc(hw, vsi->idx, promisc_m,
						  ice_vf_get_port_vlan_id(vf));
	else if (ice_vsi_has_non_zero_vlans(vsi))
		status = ice_fltr_set_vlan_vsi_promisc(hw, vsi, promisc_m);
	else
		status = ice_fltr_set_vsi_promisc(hw, vsi->idx, promisc_m, 0);

	if (status && status != -EEXIST) {
		dev_err(ice_pf_to_dev(vsi->back), "enable Tx/Rx filter promiscuous mode on VF-%u failed, error: %d\n",
			vf->vf_id, status);
		return status;
	}

	return 0;
}

/**
 * ice_vf_clear_vsi_promisc - Disable promiscuous mode for a VF VSI
 * @vf: the VF to configure
 * @vsi: the VF's VSI
 * @promisc_m: the promiscuous mode to disable
 */
int
ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m)
{
	struct ice_hw *hw = &vsi->back->hw;
	int status;

	if (ice_vf_is_port_vlan_ena(vf))
		status = ice_fltr_clear_vsi_promisc(hw, vsi->idx, promisc_m,
						    ice_vf_get_port_vlan_id(vf));
	else if (ice_vsi_has_non_zero_vlans(vsi))
		status = ice_fltr_clear_vlan_vsi_promisc(hw, vsi, promisc_m);
	else
		status = ice_fltr_clear_vsi_promisc(hw, vsi->idx, promisc_m, 0);

	if (status && status != -ENOENT) {
		dev_err(ice_pf_to_dev(vsi->back), "disable Tx/Rx filter promiscuous mode on VF-%u failed, error: %d\n",
			vf->vf_id, status);
		return status;
	}

	return 0;
}

/**
 * ice_reset_all_vfs - reset all allocated VFs in one go
 * @pf: pointer to the PF structure
 *
 * Reset all VFs at once, in response to a PF or other device reset.
 *
 * First, tell the hardware to reset each VF, then do all the waiting in one
 * chunk, and finally finish restoring each VF after the wait. This is useful
 * during PF routines which need to reset all VFs, as otherwise it must perform
 * these resets in a serialized fashion.
 */
void ice_reset_all_vfs(struct ice_pf *pf)
{
	struct device *dev = ice_pf_to_dev(pf);
	struct ice_hw *hw = &pf->hw;
	struct ice_vf *vf;
	unsigned int bkt;

	/* If we don't have any VFs, then there is nothing to reset */
	if (!ice_has_vfs(pf))
		return;

	mutex_lock(&pf->vfs.table_lock);

	/* clear all malicious info if the VFs are getting reset */
	ice_for_each_vf(pf, bkt, vf)
		if (ice_mbx_clear_malvf(&hw->mbx_snapshot, pf->vfs.malvfs,
					ICE_MAX_SRIOV_VFS, vf->vf_id))
			dev_dbg(dev, "failed to clear malicious VF state for VF %u\n",
				vf->vf_id);

	/* If VFs have been disabled, there is no need to reset */
	if (test_and_set_bit(ICE_VF_DIS, pf->state)) {
		mutex_unlock(&pf->vfs.table_lock);
		return;
	}

	/* Begin reset on all VFs at once */
	ice_for_each_vf(pf, bkt, vf)
		ice_trigger_vf_reset(vf, true, true);

	/* HW requires some time to make sure it can flush the FIFO for a VF
	 * when it resets it. Now that we've triggered all of the VFs, iterate
	 * the table again and wait for each VF to complete.
	 */
	ice_for_each_vf(pf, bkt, vf) {
		if (!vf->vf_ops->poll_reset_status(vf)) {
			/* Display a warning if at least one VF didn't manage
			 * to reset in time, but continue on with the
			 * operation.
			 */
			dev_warn(dev, "VF %u reset check timeout\n", vf->vf_id);
			break;
		}
	}

	/* free VF resources to begin resetting the VSI state */
	ice_for_each_vf(pf, bkt, vf) {
		mutex_lock(&vf->cfg_lock);

		vf->driver_caps = 0;
		ice_vc_set_default_allowlist(vf);

		ice_vf_fdir_exit(vf);
		ice_vf_fdir_init(vf);
		/* clean VF control VSI when resetting VFs since it should be
		 * setup only when VF creates its first FDIR rule.
		 */
		if (vf->ctrl_vsi_idx != ICE_NO_VSI)
			ice_vf_ctrl_invalidate_vsi(vf);

		ice_vf_pre_vsi_rebuild(vf);
		ice_vf_rebuild_vsi(vf);
		vf->vf_ops->post_vsi_rebuild(vf);

		mutex_unlock(&vf->cfg_lock);
	}

	if (ice_is_eswitch_mode_switchdev(pf))
		if (ice_eswitch_rebuild(pf))
			dev_warn(dev, "eswitch rebuild failed\n");

	ice_flush(hw);
	clear_bit(ICE_VF_DIS, pf->state);

	mutex_unlock(&pf->vfs.table_lock);
}

/**
 * ice_notify_vf_reset - Notify VF of a reset event
 * @vf: pointer to the VF structure
 */
static void ice_notify_vf_reset(struct ice_vf *vf)
{
	struct ice_hw *hw = &vf->pf->hw;
	struct virtchnl_pf_event pfe;

	/* Bail out if VF is in disabled state, neither initialized, nor active
	 * state - otherwise proceed with notifications
	 */
	if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
	     !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
	    test_bit(ICE_VF_STATE_DIS, vf->vf_states))
		return;

	pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
	pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
	ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
			      VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
			      NULL);
}

/**
 * ice_reset_vf - Reset a particular VF
 * @vf: pointer to the VF structure
 * @flags: flags controlling behavior of the reset
 *
 * Flags:
 *   ICE_VF_RESET_VFLR - Indicates a reset is due to VFLR event
 *   ICE_VF_RESET_NOTIFY - Send VF a notification prior to reset
 *   ICE_VF_RESET_LOCK - Acquire VF cfg_lock before resetting
 *
 * Returns 0 if the VF is currently in reset, if resets are disabled, or if
 * the VF resets successfully. Returns an error code if the VF fails to
 * rebuild.
 */
int ice_reset_vf(struct ice_vf *vf, u32 flags)
{
	struct ice_pf *pf = vf->pf;
	struct ice_vsi *vsi;
	struct device *dev;
	struct ice_hw *hw;
	int err = 0;
	bool rsd;

	dev = ice_pf_to_dev(pf);
	hw = &pf->hw;

	if (flags & ICE_VF_RESET_NOTIFY)
		ice_notify_vf_reset(vf);

	if (test_bit(ICE_VF_RESETS_DISABLED, pf->state)) {
		dev_dbg(dev, "Trying to reset VF %d, but all VF resets are disabled\n",
			vf->vf_id);
		return 0;
	}

	if (flags & ICE_VF_RESET_LOCK)
		mutex_lock(&vf->cfg_lock);
	else
		lockdep_assert_held(&vf->cfg_lock);

	if (ice_is_vf_disabled(vf)) {
		vsi = ice_get_vf_vsi(vf);
		if (!vsi) {
			dev_dbg(dev, "VF is already removed\n");
			err = -EINVAL;
			goto out_unlock;
		}
		ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);

		if (ice_vsi_is_rx_queue_active(vsi))
			ice_vsi_stop_all_rx_rings(vsi);

		dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n",
			vf->vf_id);
		goto out_unlock;
	}

	/* Set VF disable bit state here, before triggering reset */
	set_bit(ICE_VF_STATE_DIS, vf->vf_states);
	ice_trigger_vf_reset(vf, flags & ICE_VF_RESET_VFLR, false);

	vsi = ice_get_vf_vsi(vf);
	if (WARN_ON(!vsi)) {
		err = -EIO;
		goto out_unlock;
	}

	ice_dis_vf_qs(vf);

	/* Call Disable LAN Tx queue AQ whether or not queues are
	 * enabled. This is needed for successful completion of VFR.
	 */
	ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
			NULL, vf->vf_ops->reset_type, vf->vf_id, NULL);

	/* poll VPGEN_VFRSTAT reg to make sure
	 * that reset is complete
	 */
	rsd = vf->vf_ops->poll_reset_status(vf);

	/* Display a warning if VF didn't manage to reset in time, but need to
	 * continue on with the operation.
	 */
	if (!rsd)
		dev_warn(dev, "VF reset check timeout on VF %d\n", vf->vf_id);

	vf->driver_caps = 0;
	ice_vc_set_default_allowlist(vf);

	/* disable promiscuous modes in case they were enabled
	 * ignore any error if disabling process failed
	 */
	ice_vf_clear_all_promisc_modes(vf, vsi);

	ice_eswitch_del_vf_mac_rule(vf);

	ice_vf_fdir_exit(vf);
	ice_vf_fdir_init(vf);
	/* clean VF control VSI when resetting VF since it should be setup
	 * only when VF creates its first FDIR rule.
	 */
	if (vf->ctrl_vsi_idx != ICE_NO_VSI)
		ice_vf_ctrl_vsi_release(vf);

	ice_vf_pre_vsi_rebuild(vf);

	if (vf->vf_ops->vsi_rebuild(vf)) {
		dev_err(dev, "Failed to release and setup the VF%u's VSI\n",
			vf->vf_id);
		err = -EFAULT;
		goto out_unlock;
	}

	vf->vf_ops->post_vsi_rebuild(vf);
	vsi = ice_get_vf_vsi(vf);
	if (WARN_ON(!vsi)) {
		err = -EINVAL;
		goto out_unlock;
	}

	ice_eswitch_update_repr(vsi);
	ice_eswitch_replay_vf_mac_rule(vf);

	/* if the VF has been reset allow it to come up again */
	if (ice_mbx_clear_malvf(&hw->mbx_snapshot, pf->vfs.malvfs,
				ICE_MAX_SRIOV_VFS, vf->vf_id))
		dev_dbg(dev, "failed to clear malicious VF state for VF %u\n",
			vf->vf_id);

out_unlock:
	if (flags & ICE_VF_RESET_LOCK)
		mutex_unlock(&vf->cfg_lock);

	return err;
}

/**
 * ice_set_vf_state_qs_dis - Set VF queues state to disabled
 * @vf: pointer to the VF structure
 */
static void ice_set_vf_state_qs_dis(struct ice_vf *vf)
{
	/* Clear Rx/Tx enabled queues flag */
	bitmap_zero(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF);
	bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF);
	clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
}

/**
 * ice_set_vf_state_dis - Set VF state to disabled
 * @vf: pointer to the VF structure
 */
void ice_set_vf_state_dis(struct ice_vf *vf)
{
	ice_set_vf_state_qs_dis(vf);
	vf->vf_ops->clear_reset_state(vf);
}

/* Private functions only accessed from other virtualization files */

/**
 * ice_dis_vf_qs - Disable the VF queues
 * @vf: pointer to the VF structure
 */
void ice_dis_vf_qs(struct ice_vf *vf)
{
	struct ice_vsi *vsi = ice_get_vf_vsi(vf);

	if (WARN_ON(!vsi))
		return;

	ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);
	ice_vsi_stop_all_rx_rings(vsi);
	ice_set_vf_state_qs_dis(vf);
}

/**
 * ice_check_vf_init - helper to check if VF init complete
 * @vf: the pointer to the VF to check
 */
int ice_check_vf_init(struct ice_vf *vf)
{
	struct ice_pf *pf = vf->pf;

	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
		dev_err(ice_pf_to_dev(pf), "VF ID: %u in reset. Try again.\n",
			vf->vf_id);
		return -EBUSY;
	}
	return 0;
}

/**
 * ice_vf_get_port_info - Get the VF's port info structure
 * @vf: VF used to get the port info structure for
 */
struct ice_port_info *ice_vf_get_port_info(struct ice_vf *vf)
{
	return vf->pf->hw.port_info;
}

/**
 * ice_cfg_mac_antispoof - Configure MAC antispoof checking behavior
 * @vsi: the VSI to configure
 * @enable: whether to enable or disable the spoof checking
 *
 * Configure a VSI to enable (or disable) spoof checking behavior.
 */
static int ice_cfg_mac_antispoof(struct ice_vsi *vsi, bool enable)
{
	struct ice_vsi_ctx *ctx;
	int err;

	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;

	ctx->info.sec_flags = vsi->info.sec_flags;
	ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);

	if (enable)
		ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;
	else
		ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;

	err = ice_update_vsi(&vsi->back->hw, vsi->idx, ctx, NULL);
	if (err)
		dev_err(ice_pf_to_dev(vsi->back), "Failed to configure Tx MAC anti-spoof %s for VSI %d, error %d\n",
			enable ? "ON" : "OFF", vsi->vsi_num, err);
	else
		vsi->info.sec_flags = ctx->info.sec_flags;

	kfree(ctx);

	return err;
}

/**
 * ice_vsi_ena_spoofchk - enable Tx spoof checking for this VSI
 * @vsi: VSI to enable Tx spoof checking for
 */
static int ice_vsi_ena_spoofchk(struct ice_vsi *vsi)
{
	struct ice_vsi_vlan_ops *vlan_ops;
	int err = 0;

	vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);

	/* Allow VF with VLAN 0 only to send all tagged traffic */
	if (vsi->type != ICE_VSI_VF || ice_vsi_has_non_zero_vlans(vsi)) {
		err = vlan_ops->ena_tx_filtering(vsi);
		if (err)
			return err;
	}

	return ice_cfg_mac_antispoof(vsi, true);
}

/**
 * ice_vsi_dis_spoofchk - disable Tx spoof checking for this VSI
 * @vsi: VSI to disable Tx spoof checking for
 */
static int ice_vsi_dis_spoofchk(struct ice_vsi *vsi)
{
	struct ice_vsi_vlan_ops *vlan_ops;
	int err;

	vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);

	err = vlan_ops->dis_tx_filtering(vsi);
	if (err)
		return err;

	return ice_cfg_mac_antispoof(vsi, false);
}

/**
 * ice_vsi_apply_spoofchk - Apply Tx spoof checking setting to a VSI
 * @vsi: VSI associated to the VF
 * @enable: whether to enable or disable the spoof checking
 */
int ice_vsi_apply_spoofchk(struct ice_vsi *vsi, bool enable)
{
	int err;

	if (enable)
		err = ice_vsi_ena_spoofchk(vsi);
	else
		err = ice_vsi_dis_spoofchk(vsi);

	return err;
}

/**
 * ice_is_vf_trusted
 * @vf: pointer to the VF info
 */
bool ice_is_vf_trusted(struct ice_vf *vf)
{
	return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
}

/**
 * ice_vf_has_no_qs_ena - check if the VF has any Rx or Tx queues enabled
 * @vf: the VF to check
 *
 * Returns true if the VF has no Rx and no Tx queues enabled and returns false
 * otherwise
 */
bool ice_vf_has_no_qs_ena(struct ice_vf *vf)
{
	return (!bitmap_weight(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) &&
		!bitmap_weight(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF));
}

/**
 * ice_is_vf_link_up - check if the VF's link is up
 * @vf: VF to check if link is up
 */
bool ice_is_vf_link_up(struct ice_vf *vf)
{
	struct ice_port_info *pi = ice_vf_get_port_info(vf);

	if (ice_check_vf_init(vf))
		return false;

	if (ice_vf_has_no_qs_ena(vf))
		return false;
	else if (vf->link_forced)
		return vf->link_up;
	else
		return pi->phy.link_info.link_info &
			ICE_AQ_LINK_UP;
}

/**
 * ice_vf_set_host_trust_cfg - set trust setting based on pre-reset value
 * @vf: VF to configure trust setting for
 */
static void ice_vf_set_host_trust_cfg(struct ice_vf *vf)
{
	if (vf->trusted)
		set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
	else
		clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
}

/**
 * ice_vf_rebuild_host_mac_cfg - add broadcast and the VF's perm_addr/LAA
 * @vf: VF to add MAC filters for
 *
 * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver
 * always re-adds a broadcast filter and the VF's perm_addr/LAA after reset.
 */
static int ice_vf_rebuild_host_mac_cfg(struct ice_vf *vf)
{
	struct device *dev = ice_pf_to_dev(vf->pf);
	struct ice_vsi *vsi = ice_get_vf_vsi(vf);
	u8 broadcast[ETH_ALEN];
	int status;

	if (WARN_ON(!vsi))
		return -EINVAL;

	if (ice_is_eswitch_mode_switchdev(vf->pf))
		return 0;

	eth_broadcast_addr(broadcast);
	status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI);
	if (status) {
		dev_err(dev, "failed to add broadcast MAC filter for VF %u, error %d\n",
			vf->vf_id, status);
		return status;
	}

	vf->num_mac++;

	if (is_valid_ether_addr(vf->hw_lan_addr.addr)) {
		status = ice_fltr_add_mac(vsi, vf->hw_lan_addr.addr,
					  ICE_FWD_TO_VSI);
		if (status) {
			dev_err(dev, "failed to add default unicast MAC filter %pM for VF %u, error %d\n",
				&vf->hw_lan_addr.addr[0], vf->vf_id,
				status);
			return status;
		}
		vf->num_mac++;

		ether_addr_copy(vf->dev_lan_addr.addr, vf->hw_lan_addr.addr);
	}

	return 0;
}

/**
 * ice_vf_rebuild_host_vlan_cfg - add VLAN 0 filter or rebuild the Port VLAN
 * @vf: VF to add MAC filters for
 * @vsi: Pointer to VSI
 *
 * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver
 * always re-adds either a VLAN 0 or port VLAN based filter after reset.
 */
static int ice_vf_rebuild_host_vlan_cfg(struct ice_vf *vf, struct ice_vsi *vsi)
{
	struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
	struct device *dev = ice_pf_to_dev(vf->pf);
	int err;

	if (ice_vf_is_port_vlan_ena(vf)) {
		err = vlan_ops->set_port_vlan(vsi, &vf->port_vlan_info);
		if (err) {
			dev_err(dev, "failed to configure port VLAN via VSI parameters for VF %u, error %d\n",
				vf->vf_id, err);
			return err;
		}

		err = vlan_ops->add_vlan(vsi, &vf->port_vlan_info);
	} else {
		err = ice_vsi_add_vlan_zero(vsi);
	}

	if (err) {
		dev_err(dev, "failed to add VLAN %u filter for VF %u during VF rebuild, error %d\n",
			ice_vf_is_port_vlan_ena(vf) ?
			ice_vf_get_port_vlan_id(vf) : 0, vf->vf_id, err);
		return err;
	}

	err = vlan_ops->ena_rx_filtering(vsi);
	if (err)
		dev_warn(dev, "failed to enable Rx VLAN filtering for VF %d VSI %d during VF rebuild, error %d\n",
			 vf->vf_id, vsi->idx, err);

	return 0;
}

/**
 * ice_vf_rebuild_host_tx_rate_cfg - re-apply the Tx rate limiting configuration
 * @vf: VF to re-apply the configuration for
 *
 * Called after a VF VSI has been re-added/rebuild during reset. The PF driver
 * needs to re-apply the host configured Tx rate limiting configuration.
 */
static int ice_vf_rebuild_host_tx_rate_cfg(struct ice_vf *vf)
{
	struct device *dev = ice_pf_to_dev(vf->pf);
	struct ice_vsi *vsi = ice_get_vf_vsi(vf);
	int err;

	if (WARN_ON(!vsi))
		return -EINVAL;

	if (vf->min_tx_rate) {
		err = ice_set_min_bw_limit(vsi, (u64)vf->min_tx_rate * 1000);
		if (err) {
			dev_err(dev, "failed to set min Tx rate to %d Mbps for VF %u, error %d\n",
				vf->min_tx_rate, vf->vf_id, err);
			return err;
		}
	}

	if (vf->max_tx_rate) {
		err = ice_set_max_bw_limit(vsi, (u64)vf->max_tx_rate * 1000);
		if (err) {
			dev_err(dev, "failed to set max Tx rate to %d Mbps for VF %u, error %d\n",
				vf->max_tx_rate, vf->vf_id, err);
			return err;
		}
	}

	return 0;
}

/**
 * ice_vf_rebuild_aggregator_node_cfg - rebuild aggregator node config
 * @vsi: Pointer to VSI
 *
 * This function moves VSI into corresponding scheduler aggregator node
 * based on cached value of "aggregator node info" per VSI
 */
static void ice_vf_rebuild_aggregator_node_cfg(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
	struct device *dev;
	int status;

	if (!vsi->agg_node)
		return;

	dev = ice_pf_to_dev(pf);
	if (vsi->agg_node->num_vsis == ICE_MAX_VSIS_IN_AGG_NODE) {
		dev_dbg(dev,
			"agg_id %u already has reached max_num_vsis %u\n",
			vsi->agg_node->agg_id, vsi->agg_node->num_vsis);
		return;
	}

	status = ice_move_vsi_to_agg(pf->hw.port_info, vsi->agg_node->agg_id,
				     vsi->idx, vsi->tc_cfg.ena_tc);
	if (status)
		dev_dbg(dev, "unable to move VSI idx %u into aggregator %u node",
			vsi->idx, vsi->agg_node->agg_id);
	else
		vsi->agg_node->num_vsis++;
}

/**
 * ice_vf_rebuild_host_cfg - host admin configuration is persistent across reset
 * @vf: VF to rebuild host configuration on
 */
void ice_vf_rebuild_host_cfg(struct ice_vf *vf)
{
	struct device *dev = ice_pf_to_dev(vf->pf);
	struct ice_vsi *vsi = ice_get_vf_vsi(vf);

	if (WARN_ON(!vsi))
		return;

	ice_vf_set_host_trust_cfg(vf);

	if (ice_vf_rebuild_host_mac_cfg(vf))
		dev_err(dev, "failed to rebuild default MAC configuration for VF %d\n",
			vf->vf_id);

	if (ice_vf_rebuild_host_vlan_cfg(vf, vsi))
		dev_err(dev, "failed to rebuild VLAN configuration for VF %u\n",
			vf->vf_id);

	if (ice_vf_rebuild_host_tx_rate_cfg(vf))
		dev_err(dev, "failed to rebuild Tx rate limiting configuration for VF %u\n",
			vf->vf_id);

	if (ice_vsi_apply_spoofchk(vsi, vf->spoofchk))
		dev_err(dev, "failed to rebuild spoofchk configuration for VF %d\n",
			vf->vf_id);

	/* rebuild aggregator node config for main VF VSI */
	ice_vf_rebuild_aggregator_node_cfg(vsi);
}

/**
 * ice_vf_ctrl_invalidate_vsi - invalidate ctrl_vsi_idx to remove VSI access
 * @vf: VF that control VSI is being invalidated on
 */
void ice_vf_ctrl_invalidate_vsi(struct ice_vf *vf)
{
	vf->ctrl_vsi_idx = ICE_NO_VSI;
}

/**
 * ice_vf_ctrl_vsi_release - invalidate the VF's control VSI after freeing it
 * @vf: VF that control VSI is being released on
 */
void ice_vf_ctrl_vsi_release(struct ice_vf *vf)
{
	ice_vsi_release(vf->pf->vsi[vf->ctrl_vsi_idx]);
	ice_vf_ctrl_invalidate_vsi(vf);
}

/**
 * ice_vf_ctrl_vsi_setup - Set up a VF control VSI
 * @vf: VF to setup control VSI for
 *
 * Returns pointer to the successfully allocated VSI struct on success,
 * otherwise returns NULL on failure.
 */
struct ice_vsi *ice_vf_ctrl_vsi_setup(struct ice_vf *vf)
{
	struct ice_port_info *pi = ice_vf_get_port_info(vf);
	struct ice_pf *pf = vf->pf;
	struct ice_vsi *vsi;

	vsi = ice_vsi_setup(pf, pi, ICE_VSI_CTRL, vf, NULL);
	if (!vsi) {
		dev_err(ice_pf_to_dev(pf), "Failed to create VF control VSI\n");
		ice_vf_ctrl_invalidate_vsi(vf);
	}

	return vsi;
}

/**
 * ice_vf_invalidate_vsi - invalidate vsi_idx/vsi_num to remove VSI access
 * @vf: VF to remove access to VSI for
 */
void ice_vf_invalidate_vsi(struct ice_vf *vf)
{
	vf->lan_vsi_idx = ICE_NO_VSI;
	vf->lan_vsi_num = ICE_NO_VSI;
}

/**
 * ice_vf_set_initialized - VF is ready for VIRTCHNL communication
 * @vf: VF to set in initialized state
 *
 * After this function the VF will be ready to receive/handle the
 * VIRTCHNL_OP_GET_VF_RESOURCES message
 */
void ice_vf_set_initialized(struct ice_vf *vf)
{
	ice_set_vf_state_qs_dis(vf);
	clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
	clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
	clear_bit(ICE_VF_STATE_DIS, vf->vf_states);
	set_bit(ICE_VF_STATE_INIT, vf->vf_states);
	memset(&vf->vlan_v2_caps, 0, sizeof(vf->vlan_v2_caps));
}