summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
blob: 488e738f76c6dfdc0e75a2780e38ae307cb105c0 (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
/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
 * Copyright(c) 2013 - 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, see <http://www.gnu.org/licenses/>.
 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

#include "i40evf.h"
#include "i40e_prototype.h"

/* busy wait delay in msec */
#define I40EVF_BUSY_WAIT_DELAY 10
#define I40EVF_BUSY_WAIT_COUNT 50

/**
 * i40evf_send_pf_msg
 * @adapter: adapter structure
 * @op: virtual channel opcode
 * @msg: pointer to message buffer
 * @len: message length
 *
 * Send message to PF and print status if failure.
 **/
static int i40evf_send_pf_msg(struct i40evf_adapter *adapter,
			      enum i40e_virtchnl_ops op, u8 *msg, u16 len)
{
	struct i40e_hw *hw = &adapter->hw;
	i40e_status err;

	if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
		return 0; /* nothing to see here, move along */

	err = i40e_aq_send_msg_to_pf(hw, op, 0, msg, len, NULL);
	if (err)
		dev_err(&adapter->pdev->dev, "Unable to send opcode %d to PF, err %s, aq_err %s\n",
			op, i40evf_stat_str(hw, err),
			i40evf_aq_str(hw, hw->aq.asq_last_status));
	return err;
}

/**
 * i40evf_send_api_ver
 * @adapter: adapter structure
 *
 * Send API version admin queue message to the PF. The reply is not checked
 * in this function. Returns 0 if the message was successfully
 * sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
 **/
int i40evf_send_api_ver(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_version_info vvi;

	vvi.major = I40E_VIRTCHNL_VERSION_MAJOR;
	vvi.minor = I40E_VIRTCHNL_VERSION_MINOR;

	return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_VERSION, (u8 *)&vvi,
				  sizeof(vvi));
}

/**
 * i40evf_verify_api_ver
 * @adapter: adapter structure
 *
 * Compare API versions with the PF. Must be called after admin queue is
 * initialized. Returns 0 if API versions match, -EIO if they do not,
 * I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty, and any errors
 * from the firmware are propagated.
 **/
int i40evf_verify_api_ver(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_version_info *pf_vvi;
	struct i40e_hw *hw = &adapter->hw;
	struct i40e_arq_event_info event;
	enum i40e_virtchnl_ops op;
	i40e_status err;

	event.buf_len = I40EVF_MAX_AQ_BUF_SIZE;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
	if (!event.msg_buf) {
		err = -ENOMEM;
		goto out;
	}

	while (1) {
		err = i40evf_clean_arq_element(hw, &event, NULL);
		/* When the AQ is empty, i40evf_clean_arq_element will return
		 * nonzero and this loop will terminate.
		 */
		if (err)
			goto out_alloc;
		op =
		    (enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
		if (op == I40E_VIRTCHNL_OP_VERSION)
			break;
	}


	err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
	if (err)
		goto out_alloc;

	if (op != I40E_VIRTCHNL_OP_VERSION) {
		dev_info(&adapter->pdev->dev, "Invalid reply type %d from PF\n",
			op);
		err = -EIO;
		goto out_alloc;
	}

	pf_vvi = (struct i40e_virtchnl_version_info *)event.msg_buf;
	adapter->pf_version = *pf_vvi;

	if ((pf_vvi->major > I40E_VIRTCHNL_VERSION_MAJOR) ||
	    ((pf_vvi->major == I40E_VIRTCHNL_VERSION_MAJOR) &&
	     (pf_vvi->minor > I40E_VIRTCHNL_VERSION_MINOR)))
		err = -EIO;

out_alloc:
	kfree(event.msg_buf);
out:
	return err;
}

/**
 * i40evf_send_vf_config_msg
 * @adapter: adapter structure
 *
 * Send VF configuration request admin queue message to the PF. The reply
 * is not checked in this function. Returns 0 if the message was
 * successfully sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
 **/
int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
{
	u32 caps;

	adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
	adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
	caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
	       I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ |
	       I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
	       I40E_VIRTCHNL_VF_OFFLOAD_VLAN |
	       I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
	       I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;

	adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
	adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
	if (PF_IS_V11(adapter))
		return i40evf_send_pf_msg(adapter,
					  I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
					  (u8 *)&caps, sizeof(caps));
	else
		return i40evf_send_pf_msg(adapter,
					  I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
					  NULL, 0);
}

/**
 * i40evf_get_vf_config
 * @hw: pointer to the hardware structure
 * @len: length of buffer
 *
 * Get VF configuration from PF and populate hw structure. Must be called after
 * admin queue is initialized. Busy waits until response is received from PF,
 * with maximum timeout. Response from PF is returned in the buffer for further
 * processing by the caller.
 **/
int i40evf_get_vf_config(struct i40evf_adapter *adapter)
{
	struct i40e_hw *hw = &adapter->hw;
	struct i40e_arq_event_info event;
	enum i40e_virtchnl_ops op;
	i40e_status err;
	u16 len;

	len =  sizeof(struct i40e_virtchnl_vf_resource) +
		I40E_MAX_VF_VSI * sizeof(struct i40e_virtchnl_vsi_resource);
	event.buf_len = len;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
	if (!event.msg_buf) {
		err = -ENOMEM;
		goto out;
	}

	while (1) {
		/* When the AQ is empty, i40evf_clean_arq_element will return
		 * nonzero and this loop will terminate.
		 */
		err = i40evf_clean_arq_element(hw, &event, NULL);
		if (err)
			goto out_alloc;
		op =
		    (enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
		if (op == I40E_VIRTCHNL_OP_GET_VF_RESOURCES)
			break;
	}

	err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
	memcpy(adapter->vf_res, event.msg_buf, min(event.msg_len, len));

	i40e_vf_parse_hw_config(hw, adapter->vf_res);
out_alloc:
	kfree(event.msg_buf);
out:
	return err;
}

/**
 * i40evf_configure_queues
 * @adapter: adapter structure
 *
 * Request that the PF set up our (previously allocated) queues.
 **/
void i40evf_configure_queues(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_vsi_queue_config_info *vqci;
	struct i40e_virtchnl_queue_pair_info *vqpi;
	int pairs = adapter->num_active_queues;
	int i, len;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot configure queues, command %d pending\n",
			adapter->current_op);
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES;
	len = sizeof(struct i40e_virtchnl_vsi_queue_config_info) +
		       (sizeof(struct i40e_virtchnl_queue_pair_info) * pairs);
	vqci = kzalloc(len, GFP_KERNEL);
	if (!vqci)
		return;

	vqci->vsi_id = adapter->vsi_res->vsi_id;
	vqci->num_queue_pairs = pairs;
	vqpi = vqci->qpair;
	/* Size check is not needed here - HW max is 16 queue pairs, and we
	 * can fit info for 31 of them into the AQ buffer before it overflows.
	 */
	for (i = 0; i < pairs; i++) {
		vqpi->txq.vsi_id = vqci->vsi_id;
		vqpi->txq.queue_id = i;
		vqpi->txq.ring_len = adapter->tx_rings[i].count;
		vqpi->txq.dma_ring_addr = adapter->tx_rings[i].dma;
		vqpi->txq.headwb_enabled = 1;
		vqpi->txq.dma_headwb_addr = vqpi->txq.dma_ring_addr +
		    (vqpi->txq.ring_len * sizeof(struct i40e_tx_desc));

		vqpi->rxq.vsi_id = vqci->vsi_id;
		vqpi->rxq.queue_id = i;
		vqpi->rxq.ring_len = adapter->rx_rings[i].count;
		vqpi->rxq.dma_ring_addr = adapter->rx_rings[i].dma;
		vqpi->rxq.max_pkt_size = adapter->netdev->mtu
					+ ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
		vqpi->rxq.databuffer_size = adapter->rx_rings[i].rx_buf_len;
		if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
			vqpi->rxq.splithdr_enabled = true;
			vqpi->rxq.hdr_size = I40E_RX_HDR_SIZE;
		}
		vqpi++;
	}

	adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
			   (u8 *)vqci, len);
	kfree(vqci);
}

/**
 * i40evf_enable_queues
 * @adapter: adapter structure
 *
 * Request that the PF enable all of our queues.
 **/
void i40evf_enable_queues(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_queue_select vqs;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot enable queues, command %d pending\n",
			adapter->current_op);
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_ENABLE_QUEUES;
	vqs.vsi_id = adapter->vsi_res->vsi_id;
	vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
	vqs.rx_queues = vqs.tx_queues;
	adapter->aq_required &= ~I40EVF_FLAG_AQ_ENABLE_QUEUES;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
			   (u8 *)&vqs, sizeof(vqs));
}

/**
 * i40evf_disable_queues
 * @adapter: adapter structure
 *
 * Request that the PF disable all of our queues.
 **/
void i40evf_disable_queues(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_queue_select vqs;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot disable queues, command %d pending\n",
			adapter->current_op);
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_DISABLE_QUEUES;
	vqs.vsi_id = adapter->vsi_res->vsi_id;
	vqs.tx_queues = BIT(adapter->num_active_queues) - 1;
	vqs.rx_queues = vqs.tx_queues;
	adapter->aq_required &= ~I40EVF_FLAG_AQ_DISABLE_QUEUES;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
			   (u8 *)&vqs, sizeof(vqs));
}

/**
 * i40evf_map_queues
 * @adapter: adapter structure
 *
 * Request that the PF map queues to interrupt vectors. Misc causes, including
 * admin queue, are always mapped to vector 0.
 **/
void i40evf_map_queues(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_irq_map_info *vimi;
	int v_idx, q_vectors, len;
	struct i40e_q_vector *q_vector;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot map queues to vectors, command %d pending\n",
			adapter->current_op);
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP;

	q_vectors = adapter->num_msix_vectors - NONQ_VECS;

	len = sizeof(struct i40e_virtchnl_irq_map_info) +
	      (adapter->num_msix_vectors *
		sizeof(struct i40e_virtchnl_vector_map));
	vimi = kzalloc(len, GFP_KERNEL);
	if (!vimi)
		return;

	vimi->num_vectors = adapter->num_msix_vectors;
	/* Queue vectors first */
	for (v_idx = 0; v_idx < q_vectors; v_idx++) {
		q_vector = adapter->q_vectors + v_idx;
		vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
		vimi->vecmap[v_idx].vector_id = v_idx + NONQ_VECS;
		vimi->vecmap[v_idx].txq_map = q_vector->ring_mask;
		vimi->vecmap[v_idx].rxq_map = q_vector->ring_mask;
	}
	/* Misc vector last - this is only for AdminQ messages */
	vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
	vimi->vecmap[v_idx].vector_id = 0;
	vimi->vecmap[v_idx].txq_map = 0;
	vimi->vecmap[v_idx].rxq_map = 0;

	adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
			   (u8 *)vimi, len);
	kfree(vimi);
}

/**
 * i40evf_add_ether_addrs
 * @adapter: adapter structure
 * @addrs: the MAC address filters to add (contiguous)
 * @count: number of filters
 *
 * Request that the PF add one or more addresses to our filters.
 **/
void i40evf_add_ether_addrs(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_ether_addr_list *veal;
	int len, i = 0, count = 0;
	struct i40evf_mac_filter *f;
	bool more = false;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot add filters, command %d pending\n",
			adapter->current_op);
		return;
	}
	list_for_each_entry(f, &adapter->mac_filter_list, list) {
		if (f->add)
			count++;
	}
	if (!count) {
		adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS;

	len = sizeof(struct i40e_virtchnl_ether_addr_list) +
	      (count * sizeof(struct i40e_virtchnl_ether_addr));
	if (len > I40EVF_MAX_AQ_BUF_SIZE) {
		dev_warn(&adapter->pdev->dev, "Too many add MAC changes in one request\n");
		count = (I40EVF_MAX_AQ_BUF_SIZE -
			 sizeof(struct i40e_virtchnl_ether_addr_list)) /
			sizeof(struct i40e_virtchnl_ether_addr);
		len = sizeof(struct i40e_virtchnl_ether_addr_list) +
		      (count * sizeof(struct i40e_virtchnl_ether_addr));
		more = true;
	}

	veal = kzalloc(len, GFP_KERNEL);
	if (!veal)
		return;

	veal->vsi_id = adapter->vsi_res->vsi_id;
	veal->num_elements = count;
	list_for_each_entry(f, &adapter->mac_filter_list, list) {
		if (f->add) {
			ether_addr_copy(veal->list[i].addr, f->macaddr);
			i++;
			f->add = false;
		}
	}
	if (!more)
		adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
			   (u8 *)veal, len);
	kfree(veal);
}

/**
 * i40evf_del_ether_addrs
 * @adapter: adapter structure
 * @addrs: the MAC address filters to remove (contiguous)
 * @count: number of filtes
 *
 * Request that the PF remove one or more addresses from our filters.
 **/
void i40evf_del_ether_addrs(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_ether_addr_list *veal;
	struct i40evf_mac_filter *f, *ftmp;
	int len, i = 0, count = 0;
	bool more = false;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot remove filters, command %d pending\n",
			adapter->current_op);
		return;
	}
	list_for_each_entry(f, &adapter->mac_filter_list, list) {
		if (f->remove)
			count++;
	}
	if (!count) {
		adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS;

	len = sizeof(struct i40e_virtchnl_ether_addr_list) +
	      (count * sizeof(struct i40e_virtchnl_ether_addr));
	if (len > I40EVF_MAX_AQ_BUF_SIZE) {
		dev_warn(&adapter->pdev->dev, "Too many delete MAC changes in one request\n");
		count = (I40EVF_MAX_AQ_BUF_SIZE -
			 sizeof(struct i40e_virtchnl_ether_addr_list)) /
			sizeof(struct i40e_virtchnl_ether_addr);
		len = sizeof(struct i40e_virtchnl_ether_addr_list) +
		      (count * sizeof(struct i40e_virtchnl_ether_addr));
		more = true;
	}
	veal = kzalloc(len, GFP_KERNEL);
	if (!veal)
		return;

	veal->vsi_id = adapter->vsi_res->vsi_id;
	veal->num_elements = count;
	list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
		if (f->remove) {
			ether_addr_copy(veal->list[i].addr, f->macaddr);
			i++;
			list_del(&f->list);
			kfree(f);
		}
	}
	if (!more)
		adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
			   (u8 *)veal, len);
	kfree(veal);
}

/**
 * i40evf_add_vlans
 * @adapter: adapter structure
 * @vlans: the VLANs to add
 * @count: number of VLANs
 *
 * Request that the PF add one or more VLAN filters to our VSI.
 **/
void i40evf_add_vlans(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_vlan_filter_list *vvfl;
	int len, i = 0, count = 0;
	struct i40evf_vlan_filter *f;
	bool more = false;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot add VLANs, command %d pending\n",
			adapter->current_op);
		return;
	}

	list_for_each_entry(f, &adapter->vlan_filter_list, list) {
		if (f->add)
			count++;
	}
	if (!count) {
		adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_ADD_VLAN;

	len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
	      (count * sizeof(u16));
	if (len > I40EVF_MAX_AQ_BUF_SIZE) {
		dev_warn(&adapter->pdev->dev, "Too many add VLAN changes in one request\n");
		count = (I40EVF_MAX_AQ_BUF_SIZE -
			 sizeof(struct i40e_virtchnl_vlan_filter_list)) /
			sizeof(u16);
		len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
		      (count * sizeof(u16));
		more = true;
	}
	vvfl = kzalloc(len, GFP_KERNEL);
	if (!vvfl)
		return;

	vvfl->vsi_id = adapter->vsi_res->vsi_id;
	vvfl->num_elements = count;
	list_for_each_entry(f, &adapter->vlan_filter_list, list) {
		if (f->add) {
			vvfl->vlan_id[i] = f->vlan;
			i++;
			f->add = false;
		}
	}
	if (!more)
		adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
	kfree(vvfl);
}

/**
 * i40evf_del_vlans
 * @adapter: adapter structure
 * @vlans: the VLANs to remove
 * @count: number of VLANs
 *
 * Request that the PF remove one or more VLAN filters from our VSI.
 **/
void i40evf_del_vlans(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_vlan_filter_list *vvfl;
	struct i40evf_vlan_filter *f, *ftmp;
	int len, i = 0, count = 0;
	bool more = false;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot remove VLANs, command %d pending\n",
			adapter->current_op);
		return;
	}

	list_for_each_entry(f, &adapter->vlan_filter_list, list) {
		if (f->remove)
			count++;
	}
	if (!count) {
		adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_DEL_VLAN;

	len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
	      (count * sizeof(u16));
	if (len > I40EVF_MAX_AQ_BUF_SIZE) {
		dev_warn(&adapter->pdev->dev, "Too many delete VLAN changes in one request\n");
		count = (I40EVF_MAX_AQ_BUF_SIZE -
			 sizeof(struct i40e_virtchnl_vlan_filter_list)) /
			sizeof(u16);
		len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
		      (count * sizeof(u16));
		more = true;
	}
	vvfl = kzalloc(len, GFP_KERNEL);
	if (!vvfl)
		return;

	vvfl->vsi_id = adapter->vsi_res->vsi_id;
	vvfl->num_elements = count;
	list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
		if (f->remove) {
			vvfl->vlan_id[i] = f->vlan;
			i++;
			list_del(&f->list);
			kfree(f);
		}
	}
	if (!more)
		adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len);
	kfree(vvfl);
}

/**
 * i40evf_set_promiscuous
 * @adapter: adapter structure
 * @flags: bitmask to control unicast/multicast promiscuous.
 *
 * Request that the PF enable promiscuous mode for our VSI.
 **/
void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags)
{
	struct i40e_virtchnl_promisc_info vpi;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot set promiscuous mode, command %d pending\n",
			adapter->current_op);
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
	vpi.vsi_id = adapter->vsi_res->vsi_id;
	vpi.flags = flags;
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
			   (u8 *)&vpi, sizeof(vpi));
}

/**
 * i40evf_request_stats
 * @adapter: adapter structure
 *
 * Request VSI statistics from PF.
 **/
void i40evf_request_stats(struct i40evf_adapter *adapter)
{
	struct i40e_virtchnl_queue_select vqs;

	if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
		/* no error message, this isn't crucial */
		return;
	}
	adapter->current_op = I40E_VIRTCHNL_OP_GET_STATS;
	vqs.vsi_id = adapter->vsi_res->vsi_id;
	/* queue maps are ignored for this message - only the vsi is used */
	if (i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_STATS,
			       (u8 *)&vqs, sizeof(vqs)))
		/* if the request failed, don't lock out others */
		adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
}
/**
 * i40evf_request_reset
 * @adapter: adapter structure
 *
 * Request that the PF reset this VF. No response is expected.
 **/
void i40evf_request_reset(struct i40evf_adapter *adapter)
{
	/* Don't check CURRENT_OP - this is always higher priority */
	i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_RESET_VF, NULL, 0);
	adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
}

/**
 * i40evf_virtchnl_completion
 * @adapter: adapter structure
 * @v_opcode: opcode sent by PF
 * @v_retval: retval sent by PF
 * @msg: message sent by PF
 * @msglen: message length
 *
 * Asynchronous completion function for admin queue messages. Rather than busy
 * wait, we fire off our requests and assume that no errors will be returned.
 * This function handles the reply messages.
 **/
void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
				enum i40e_virtchnl_ops v_opcode,
				i40e_status v_retval,
				u8 *msg, u16 msglen)
{
	struct net_device *netdev = adapter->netdev;

	if (v_opcode == I40E_VIRTCHNL_OP_EVENT) {
		struct i40e_virtchnl_pf_event *vpe =
			(struct i40e_virtchnl_pf_event *)msg;
		switch (vpe->event) {
		case I40E_VIRTCHNL_EVENT_LINK_CHANGE:
			adapter->link_up =
				vpe->event_data.link_event.link_status;
			if (adapter->link_up && !netif_carrier_ok(netdev)) {
				dev_info(&adapter->pdev->dev, "NIC Link is Up\n");
				netif_carrier_on(netdev);
				netif_tx_wake_all_queues(netdev);
			} else if (!adapter->link_up) {
				dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
				netif_carrier_off(netdev);
				netif_tx_stop_all_queues(netdev);
			}
			break;
		case I40E_VIRTCHNL_EVENT_RESET_IMPENDING:
			dev_info(&adapter->pdev->dev, "PF reset warning received\n");
			if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
				adapter->flags |= I40EVF_FLAG_RESET_PENDING;
				dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
				schedule_work(&adapter->reset_task);
			}
			break;
		default:
			dev_err(&adapter->pdev->dev, "Unknown event %d from PF\n",
				vpe->event);
			break;
		}
		return;
	}
	if (v_retval) {
		switch (v_opcode) {
		case I40E_VIRTCHNL_OP_ADD_VLAN:
			dev_err(&adapter->pdev->dev, "Failed to add VLAN filter, error %s\n",
				i40evf_stat_str(&adapter->hw, v_retval));
			break;
		case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
			dev_err(&adapter->pdev->dev, "Failed to add MAC filter, error %s\n",
				i40evf_stat_str(&adapter->hw, v_retval));
			break;
		case I40E_VIRTCHNL_OP_DEL_VLAN:
			dev_err(&adapter->pdev->dev, "Failed to delete VLAN filter, error %s\n",
				i40evf_stat_str(&adapter->hw, v_retval));
			break;
		case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
			dev_err(&adapter->pdev->dev, "Failed to delete MAC filter, error %s\n",
				i40evf_stat_str(&adapter->hw, v_retval));
			break;
		default:
			dev_err(&adapter->pdev->dev, "PF returned error %d (%s) to our request %d\n",
				v_retval,
				i40evf_stat_str(&adapter->hw, v_retval),
				v_opcode);
		}
	}
	switch (v_opcode) {
	case I40E_VIRTCHNL_OP_GET_STATS: {
		struct i40e_eth_stats *stats =
			(struct i40e_eth_stats *)msg;
		adapter->net_stats.rx_packets = stats->rx_unicast +
						 stats->rx_multicast +
						 stats->rx_broadcast;
		adapter->net_stats.tx_packets = stats->tx_unicast +
						 stats->tx_multicast +
						 stats->tx_broadcast;
		adapter->net_stats.rx_bytes = stats->rx_bytes;
		adapter->net_stats.tx_bytes = stats->tx_bytes;
		adapter->net_stats.tx_errors = stats->tx_errors;
		adapter->net_stats.rx_dropped = stats->rx_discards;
		adapter->net_stats.tx_dropped = stats->tx_discards;
		adapter->current_stats = *stats;
		}
		break;
	case I40E_VIRTCHNL_OP_GET_VF_RESOURCES: {
		u16 len = sizeof(struct i40e_virtchnl_vf_resource) +
			  I40E_MAX_VF_VSI *
			  sizeof(struct i40e_virtchnl_vsi_resource);
		memcpy(adapter->vf_res, msg, min(msglen, len));
		i40e_vf_parse_hw_config(&adapter->hw, adapter->vf_res);
		/* restore current mac address */
		ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
		i40evf_process_config(adapter);
		}
		break;
	case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
		/* enable transmits */
		i40evf_irq_enable(adapter, true);
		netif_tx_start_all_queues(adapter->netdev);
		netif_carrier_on(adapter->netdev);
		break;
	case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
		i40evf_free_all_tx_resources(adapter);
		i40evf_free_all_rx_resources(adapter);
		if (adapter->state == __I40EVF_DOWN_PENDING)
			adapter->state = __I40EVF_DOWN;
		break;
	case I40E_VIRTCHNL_OP_VERSION:
	case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
		/* Don't display an error if we get these out of sequence.
		 * If the firmware needed to get kicked, we'll get these and
		 * it's no problem.
		 */
		if (v_opcode != adapter->current_op)
			return;
		break;
	default:
		if (v_opcode != adapter->current_op)
			dev_warn(&adapter->pdev->dev, "Expected response %d from PF, received %d\n",
				 adapter->current_op, v_opcode);
		break;
	} /* switch v_opcode */
	adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
}