summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/net/ethernet/sfc/ef10_sriov.c
blob: 3c17f274e80200ca8bb08b5a0db62aa34a943af9 (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
/****************************************************************************
 * Driver for Solarflare network controllers and boards
 * Copyright 2015 Solarflare Communications Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation, incorporated herein by reference.
 */
#include <linux/pci.h>
#include <linux/module.h>
#include "net_driver.h"
#include "ef10_sriov.h"
#include "efx.h"
#include "nic.h"
#include "mcdi_pcol.h"

static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id,
				    unsigned int vf_fn)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN);
	struct efx_ef10_nic_data *nic_data = efx->nic_data;

	MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id);
	MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION,
			      EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index,
			      EVB_PORT_ASSIGN_IN_VF, vf_fn);

	return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf),
			    NULL, 0, NULL);
}

static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id,
				  unsigned int vswitch_type)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN);
	int rc;

	MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
	MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type);
	MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2);
	MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS,
			      VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0);

	/* Quietly try to allocate 2 VLAN tags */
	rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf),
				NULL, 0, NULL);

	/* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */
	if (rc == -EPROTO) {
		MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1);
		rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf,
				  sizeof(inbuf), NULL, 0, NULL);
	} else if (rc) {
		efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC,
				       MC_CMD_VSWITCH_ALLOC_IN_LEN,
				       NULL, 0, rc);
	}
	return rc;
}

static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN);

	MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id);

	return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf),
			    NULL, 0, NULL);
}

static int efx_ef10_vport_alloc(struct efx_nic *efx,
				unsigned int port_id_in,
				unsigned int vport_type,
				u16 vlan,
				unsigned int *port_id_out)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN);
	MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN);
	size_t outlen;
	int rc;

	EFX_WARN_ON_PARANOID(!port_id_out);

	MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in);
	MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type);
	MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS,
		       (vlan != EFX_EF10_NO_VLAN));
	MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS,
			      VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0);
	if (vlan != EFX_EF10_NO_VLAN)
		MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS,
				      VPORT_ALLOC_IN_VLAN_TAG_0, vlan);

	rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf),
			  outbuf, sizeof(outbuf), &outlen);
	if (rc)
		return rc;
	if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN)
		return -EIO;

	*port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID);
	return 0;
}

static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN);

	MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id);

	return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf),
			    NULL, 0, NULL);
}

static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	int i;

	if (!nic_data->vf)
		return;

	for (i = 0; i < efx->vf_count; i++) {
		struct ef10_vf *vf = nic_data->vf + i;

		/* If VF is assigned, do not free the vport  */
		if (vf->pci_dev &&
		    vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
			continue;

		if (vf->vport_assigned) {
			efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i);
			vf->vport_assigned = 0;
		}

		if (!is_zero_ether_addr(vf->mac)) {
			efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
			eth_zero_addr(vf->mac);
		}

		if (vf->vport_id) {
			efx_ef10_vport_free(efx, vf->vport_id);
			vf->vport_id = 0;
		}

		vf->efx = NULL;
	}
}

static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;

	efx_ef10_sriov_free_vf_vports(efx);
	kfree(nic_data->vf);
	nic_data->vf = NULL;
}

static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx,
					  unsigned int vf_i)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	struct ef10_vf *vf = nic_data->vf + vf_i;
	int rc;

	if (WARN_ON_ONCE(!nic_data->vf))
		return -EOPNOTSUPP;

	rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
				  MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
				  vf->vlan, &vf->vport_id);
	if (rc)
		return rc;

	rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
	if (rc) {
		eth_zero_addr(vf->mac);
		return rc;
	}

	rc =  efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
	if (rc)
		return rc;

	vf->vport_assigned = 1;
	return 0;
}

static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	unsigned int i;
	int rc;

	nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf),
			       GFP_KERNEL);
	if (!nic_data->vf)
		return -ENOMEM;

	for (i = 0; i < efx->vf_count; i++) {
		random_ether_addr(nic_data->vf[i].mac);
		nic_data->vf[i].efx = NULL;
		nic_data->vf[i].vlan = EFX_EF10_NO_VLAN;

		rc = efx_ef10_sriov_assign_vf_vport(efx, i);
		if (rc)
			goto fail;
	}

	return 0;
fail:
	efx_ef10_sriov_free_vf_vports(efx);
	kfree(nic_data->vf);
	nic_data->vf = NULL;
	return rc;
}

static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
{
	unsigned int i;
	int rc;

	for (i = 0; i < efx->vf_count; i++) {
		rc = efx_ef10_sriov_assign_vf_vport(efx, i);
		if (rc)
			goto fail;
	}

	return 0;
fail:
	efx_ef10_sriov_free_vf_vswitching(efx);
	return rc;
}

/* On top of the default firmware vswitch setup, create a VEB vswitch and
 * expansion vport for use by this function.
 */
int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	struct net_device *net_dev = efx->net_dev;
	int rc;

	if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
		/* vswitch not needed as we have no VFs */
		efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
		return 0;
	}

	rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
				    MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
	if (rc)
		goto fail1;

	rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
				  MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
				  EFX_EF10_NO_VLAN, &nic_data->vport_id);
	if (rc)
		goto fail2;

	rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
	if (rc)
		goto fail3;
	ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);

	rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
	if (rc)
		goto fail4;

	return 0;
fail4:
	efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
	eth_zero_addr(nic_data->vport_mac);
fail3:
	efx_ef10_vport_free(efx, nic_data->vport_id);
	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
fail2:
	efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
fail1:
	return rc;
}

int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;

	return efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
}

int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	int rc;

	if (!nic_data->must_probe_vswitching)
		return 0;

	rc = efx_ef10_vswitching_probe_pf(efx);
	if (rc)
		goto fail;

	rc = efx_ef10_sriov_restore_vf_vswitching(efx);
	if (rc)
		goto fail;

	nic_data->must_probe_vswitching = false;
fail:
	return rc;
}

int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	int rc;

	if (!nic_data->must_probe_vswitching)
		return 0;

	rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
	if (rc)
		return rc;

	nic_data->must_probe_vswitching = false;
	return 0;
}

void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;

	efx_ef10_sriov_free_vf_vswitching(efx);

	efx_ef10_vadaptor_free(efx, nic_data->vport_id);

	if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
		return; /* No vswitch was ever created */

	if (!is_zero_ether_addr(nic_data->vport_mac)) {
		efx_ef10_vport_del_mac(efx, nic_data->vport_id,
				       efx->net_dev->dev_addr);
		eth_zero_addr(nic_data->vport_mac);
	}
	efx_ef10_vport_free(efx, nic_data->vport_id);
	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;

	/* Only free the vswitch if no VFs are assigned */
	if (!pci_vfs_assigned(efx->pci_dev))
		efx_ef10_vswitch_free(efx, nic_data->vport_id);
}

void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
{
	efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
}

static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
{
	int rc = 0;
	struct pci_dev *dev = efx->pci_dev;

	efx->vf_count = num_vfs;

	rc = efx_ef10_sriov_alloc_vf_vswitching(efx);
	if (rc)
		goto fail1;

	rc = pci_enable_sriov(dev, num_vfs);
	if (rc)
		goto fail2;

	return 0;
fail2:
	efx_ef10_sriov_free_vf_vswitching(efx);
fail1:
	efx->vf_count = 0;
	netif_err(efx, probe, efx->net_dev,
		  "Failed to enable SRIOV VFs\n");
	return rc;
}

static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
{
	struct pci_dev *dev = efx->pci_dev;
	unsigned int vfs_assigned = 0;

	vfs_assigned = pci_vfs_assigned(dev);

	if (vfs_assigned && !force) {
		netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
			   "please detach them before disabling SR-IOV\n");
		return -EBUSY;
	}

	if (!vfs_assigned)
		pci_disable_sriov(dev);

	efx_ef10_sriov_free_vf_vswitching(efx);
	efx->vf_count = 0;
	return 0;
}

int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
{
	if (num_vfs == 0)
		return efx_ef10_pci_sriov_disable(efx, false);
	else
		return efx_ef10_pci_sriov_enable(efx, num_vfs);
}

int efx_ef10_sriov_init(struct efx_nic *efx)
{
	return 0;
}

void efx_ef10_sriov_fini(struct efx_nic *efx)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	unsigned int i;
	int rc;

	if (!nic_data->vf) {
		/* Remove any un-assigned orphaned VFs */
		if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
			pci_disable_sriov(efx->pci_dev);
		return;
	}

	/* Remove any VFs in the host */
	for (i = 0; i < efx->vf_count; ++i) {
		struct efx_nic *vf_efx = nic_data->vf[i].efx;

		if (vf_efx)
			vf_efx->pci_dev->driver->remove(vf_efx->pci_dev);
	}

	rc = efx_ef10_pci_sriov_disable(efx, true);
	if (rc)
		netif_dbg(efx, drv, efx->net_dev,
			  "Disabling SRIOV was not successful rc=%d\n", rc);
	else
		netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n");
}

static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id,
				     u8 *mac)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
	MCDI_DECLARE_BUF_ERR(outbuf);
	size_t outlen;
	int rc;

	MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
	ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);

	rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
			  sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);

	return rc;
}

int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	struct ef10_vf *vf;
	int rc;

	if (!nic_data->vf)
		return -EOPNOTSUPP;

	if (vf_i >= efx->vf_count)
		return -EINVAL;
	vf = nic_data->vf + vf_i;

	if (vf->efx) {
		efx_device_detach_sync(vf->efx);
		efx_net_stop(vf->efx->net_dev);

		down_write(&vf->efx->filter_sem);
		vf->efx->type->filter_table_remove(vf->efx);

		rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
		if (rc) {
			up_write(&vf->efx->filter_sem);
			return rc;
		}
	}

	rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
	if (rc)
		return rc;

	if (!is_zero_ether_addr(vf->mac)) {
		rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac);
		if (rc)
			return rc;
	}

	if (!is_zero_ether_addr(mac)) {
		rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
		if (rc) {
			eth_zero_addr(vf->mac);
			goto fail;
		}
		if (vf->efx)
			ether_addr_copy(vf->efx->net_dev->dev_addr, mac);
	}

	ether_addr_copy(vf->mac, mac);

	rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
	if (rc)
		goto fail;

	if (vf->efx) {
		/* VF cannot use the vport_id that the PF created */
		rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
		if (rc) {
			up_write(&vf->efx->filter_sem);
			return rc;
		}
		vf->efx->type->filter_table_probe(vf->efx);
		up_write(&vf->efx->filter_sem);
		efx_net_open(vf->efx->net_dev);
		netif_device_attach(vf->efx->net_dev);
	}

	return 0;

fail:
	memset(vf->mac, 0, ETH_ALEN);
	return rc;
}

int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
			       u8 qos)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	struct ef10_vf *vf;
	u16 old_vlan, new_vlan;
	int rc = 0, rc2 = 0;

	if (vf_i >= efx->vf_count)
		return -EINVAL;
	if (qos != 0)
		return -EINVAL;

	vf = nic_data->vf + vf_i;

	new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan;
	if (new_vlan == vf->vlan)
		return 0;

	if (vf->efx) {
		efx_device_detach_sync(vf->efx);
		efx_net_stop(vf->efx->net_dev);

		down_write(&vf->efx->filter_sem);
		vf->efx->type->filter_table_remove(vf->efx);

		rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
		if (rc)
			goto restore_filters;
	}

	if (vf->vport_assigned) {
		rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
		if (rc) {
			netif_warn(efx, drv, efx->net_dev,
				   "Failed to change vlan on VF %d.\n", vf_i);
			netif_warn(efx, drv, efx->net_dev,
				   "This is likely because the VF is bound to a driver in a VM.\n");
			netif_warn(efx, drv, efx->net_dev,
				   "Please unload the driver in the VM.\n");
			goto restore_vadaptor;
		}
		vf->vport_assigned = 0;
	}

	if (!is_zero_ether_addr(vf->mac)) {
		rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
		if (rc)
			goto restore_evb_port;
	}

	if (vf->vport_id) {
		rc = efx_ef10_vport_free(efx, vf->vport_id);
		if (rc)
			goto restore_mac;
		vf->vport_id = 0;
	}

	/* Do the actual vlan change */
	old_vlan = vf->vlan;
	vf->vlan = new_vlan;

	/* Restore everything in reverse order */
	rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
				  MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
				  vf->vlan, &vf->vport_id);
	if (rc)
		goto reset_nic_up_write;

restore_mac:
	if (!is_zero_ether_addr(vf->mac)) {
		rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
		if (rc2) {
			eth_zero_addr(vf->mac);
			goto reset_nic_up_write;
		}
	}

restore_evb_port:
	rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
	if (rc2)
		goto reset_nic_up_write;
	else
		vf->vport_assigned = 1;

restore_vadaptor:
	if (vf->efx) {
		rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
		if (rc2)
			goto reset_nic_up_write;
	}

restore_filters:
	if (vf->efx) {
		rc2 = vf->efx->type->filter_table_probe(vf->efx);
		if (rc2)
			goto reset_nic_up_write;

		up_write(&vf->efx->filter_sem);

		up_write(&vf->efx->filter_sem);

		rc2 = efx_net_open(vf->efx->net_dev);
		if (rc2)
			goto reset_nic;

		netif_device_attach(vf->efx->net_dev);
	}
	return rc;

reset_nic_up_write:
	if (vf->efx)
		up_write(&vf->efx->filter_sem);

reset_nic:
	if (vf->efx) {
		netif_err(efx, drv, efx->net_dev,
			  "Failed to restore VF - scheduling reset.\n");
		efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH);
	} else {
		netif_err(efx, drv, efx->net_dev,
			  "Failed to restore the VF and cannot reset the VF "
			  "- VF is not functional.\n");
		netif_err(efx, drv, efx->net_dev,
			  "Please reload the driver attached to the VF.\n");
	}

	return rc ? rc : rc2;
}

int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i,
				   bool spoofchk)
{
	return spoofchk ? -EOPNOTSUPP : 0;
}

int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,
				     int link_state)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
	struct efx_ef10_nic_data *nic_data = efx->nic_data;

	BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO !=
		     MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO);
	BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE !=
		     MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP);
	BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE !=
		     MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN);
	MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
			      LINK_STATE_MODE_IN_FUNCTION_PF,
			      nic_data->pf_index,
			      LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
	MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state);
	return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
			    NULL, 0, NULL); /* don't care what old mode was */
}

int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i,
				 struct ifla_vf_info *ivf)
{
	MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
	MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN);

	struct efx_ef10_nic_data *nic_data = efx->nic_data;
	struct ef10_vf *vf;
	size_t outlen;
	int rc;

	if (vf_i >= efx->vf_count)
		return -EINVAL;

	if (!nic_data->vf)
		return -EOPNOTSUPP;

	vf = nic_data->vf + vf_i;

	ivf->vf = vf_i;
	ivf->min_tx_rate = 0;
	ivf->max_tx_rate = 0;
	ether_addr_copy(ivf->mac, vf->mac);
	ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan;
	ivf->qos = 0;

	MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
			      LINK_STATE_MODE_IN_FUNCTION_PF,
			      nic_data->pf_index,
			      LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
	MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE,
		       MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE);
	rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
			  outbuf, sizeof(outbuf), &outlen);
	if (rc)
		return rc;
	if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN)
		return -EIO;
	ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE);

	return 0;
}

int efx_ef10_sriov_get_phys_port_id(struct efx_nic *efx,
				    struct netdev_phys_item_id *ppid)
{
	struct efx_ef10_nic_data *nic_data = efx->nic_data;

	if (!is_valid_ether_addr(nic_data->port_id))
		return -EOPNOTSUPP;

	ppid->id_len = ETH_ALEN;
	memcpy(ppid->id, nic_data->port_id, ppid->id_len);

	return 0;
}