aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
blob: da31735311f137091e9447e189491e4b223a40ed (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
/*******************************************************************************

  Intel 10 Gigabit PCI Express Linux driver
  Copyright(c) 1999 - 2011 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 "ixgbe.h"
#include <linux/dcbnl.h>
#include "ixgbe_dcb_82598.h"
#include "ixgbe_dcb_82599.h"

/* Callbacks for DCB netlink in the kernel */
#define BIT_DCB_MODE	0x01
#define BIT_PFC		0x02
#define BIT_PG_RX	0x04
#define BIT_PG_TX	0x08
#define BIT_APP_UPCHG	0x10
#define BIT_LINKSPEED   0x80

/* Responses for the DCB_C_SET_ALL command */
#define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
#define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
#define DCB_HW_CHG      2  /* DCB configuration changed, no reset */

int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
                       struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
{
	struct tc_configuration *src_tc_cfg = NULL;
	struct tc_configuration *dst_tc_cfg = NULL;
	int i;

	if (!src_dcb_cfg || !dst_dcb_cfg)
		return -EINVAL;

	for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
		src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
		dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];

		dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
				src_tc_cfg->path[DCB_TX_CONFIG].prio_type;

		dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
				src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;

		dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
				src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;

		dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
				src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;

		dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
				src_tc_cfg->path[DCB_RX_CONFIG].prio_type;

		dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
				src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;

		dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
				src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;

		dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
				src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
	}

	for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
		dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
			[i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
				[DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
		dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
			[i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
				[DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
	}

	for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
		dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
			src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
	}

	dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;

	return 0;
}

static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
}

static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
{
	u8 err = 0;
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	/* Fail command if not in CEE mode */
	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
		return 1;

	/* verify there is something to do, if not then exit */
	if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
		return err;

	if (state > 0)
		err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
	else
		err = ixgbe_setup_tc(netdev, 0);

	return err;
}

static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
					 u8 *perm_addr)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	int i, j;

	memset(perm_addr, 0xff, MAX_ADDR_LEN);

	for (i = 0; i < netdev->addr_len; i++)
		perm_addr[i] = adapter->hw.mac.perm_addr[i];

	switch (adapter->hw.mac.type) {
	case ixgbe_mac_82599EB:
	case ixgbe_mac_X540:
		for (j = 0; j < netdev->addr_len; j++, i++)
			perm_addr[i] = adapter->hw.mac.san_addr[j];
		break;
	default:
		break;
	}
}

static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
                                         u8 prio, u8 bwg_id, u8 bw_pct,
                                         u8 up_map)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (prio != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
	if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
	if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
			bw_pct;
	if (up_map != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
			up_map;

	if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
	     adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
	    (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
	     adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
	    (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
	     adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
	    (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
	     adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
		adapter->dcb_set_bitmap |= BIT_PG_TX;

	if (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
	     adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)
		adapter->dcb_set_bitmap |= BIT_PFC | BIT_APP_UPCHG;
}

static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
                                          u8 bw_pct)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;

	if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
	    adapter->dcb_cfg.bw_percentage[0][bwg_id])
		adapter->dcb_set_bitmap |= BIT_PG_TX;
}

static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
                                         u8 prio, u8 bwg_id, u8 bw_pct,
                                         u8 up_map)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (prio != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
	if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
	if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
			bw_pct;
	if (up_map != DCB_ATTR_VALUE_UNDEFINED)
		adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
			up_map;

	if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
	     adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
	    (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
	     adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
	    (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
	     adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
	    (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
	     adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
		adapter->dcb_set_bitmap |= BIT_PG_RX;

	if (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
	     adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)
		adapter->dcb_set_bitmap |= BIT_PFC;
}

static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
                                          u8 bw_pct)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;

	if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
	    adapter->dcb_cfg.bw_percentage[1][bwg_id])
		adapter->dcb_set_bitmap |= BIT_PG_RX;
}

static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
                                         u8 *prio, u8 *bwg_id, u8 *bw_pct,
                                         u8 *up_map)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	*prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
	*bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
	*bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
	*up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
}

static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
                                          u8 *bw_pct)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	*bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
}

static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
                                         u8 *prio, u8 *bwg_id, u8 *bw_pct,
                                         u8 *up_map)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	*prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
	*bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
	*bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
	*up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
}

static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
                                          u8 *bw_pct)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	*bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
}

static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
                                    u8 setting)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
	if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
	    adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
		adapter->dcb_set_bitmap |= BIT_PFC;
		adapter->temp_dcb_cfg.pfc_mode_enable = true;
	}
}

static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
                                    u8 *setting)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	*setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
}

#ifdef IXGBE_FCOE
static void ixgbe_dcbnl_devreset(struct net_device *dev)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);

	while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
		usleep_range(1000, 2000);

	if (netif_running(dev))
		dev->netdev_ops->ndo_stop(dev);

	ixgbe_clear_interrupt_scheme(adapter);
	ixgbe_init_interrupt_scheme(adapter);

	if (netif_running(dev))
		dev->netdev_ops->ndo_open(dev);

	clear_bit(__IXGBE_RESETTING, &adapter->state);
}
#endif

static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	int ret, i;
#ifdef IXGBE_FCOE
	struct dcb_app app = {
			      .selector = DCB_APP_IDTYPE_ETHTYPE,
			      .protocol = ETH_P_FCOE,
			     };
	u8 up;

	/* In IEEE mode, use the IEEE Ethertype selector value */
	if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
		app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
		up = dcb_ieee_getapp_mask(netdev, &app);
	} else {
		up = dcb_getapp(netdev, &app);
	}
#endif

	/* Fail command if not in CEE mode */
	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
		return 1;

	ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
				 MAX_TRAFFIC_CLASS);
	if (ret)
		return DCB_NO_HW_CHG;

	if (adapter->dcb_cfg.pfc_mode_enable) {
		switch (adapter->hw.mac.type) {
		case ixgbe_mac_82599EB:
		case ixgbe_mac_X540:
			if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
				adapter->last_lfc_mode =
				                  adapter->hw.fc.current_mode;
			break;
		default:
			break;
		}
		adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
	} else {
		switch (adapter->hw.mac.type) {
		case ixgbe_mac_82598EB:
			adapter->hw.fc.requested_mode = ixgbe_fc_none;
			break;
		case ixgbe_mac_82599EB:
		case ixgbe_mac_X540:
			adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
			break;
		default:
			break;
		}
	}

	if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
		u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
		u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
		/* Priority to TC mapping in CEE case default to 1:1 */
		u8 prio_tc[MAX_USER_PRIORITY];
		int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;

#ifdef IXGBE_FCOE
		if (adapter->netdev->features & NETIF_F_FCOE_MTU)
			max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif

		ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
					       max_frame, DCB_TX_CONFIG);
		ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
					       max_frame, DCB_RX_CONFIG);

		ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
					DCB_TX_CONFIG, refill);
		ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
		ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
				       DCB_TX_CONFIG, bwg_id);
		ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
				      DCB_TX_CONFIG, prio_type);
		ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
				     DCB_TX_CONFIG, prio_tc);

		ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
					bwg_id, prio_type, prio_tc);

		for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
			netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
	}

	if (adapter->dcb_set_bitmap & BIT_PFC) {
		u8 pfc_en;
		u8 prio_tc[MAX_USER_PRIORITY];

		ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
				     DCB_TX_CONFIG, prio_tc);
		ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
		ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
		ret = DCB_HW_CHG;
	}

	if (adapter->dcb_cfg.pfc_mode_enable)
		adapter->hw.fc.current_mode = ixgbe_fc_pfc;

#ifdef IXGBE_FCOE
	/* Reprogam FCoE hardware offloads when the traffic class
	 * FCoE is using changes. This happens if the APP info
	 * changes or the up2tc mapping is updated.
	 */
	if ((up && !(up & (1 << adapter->fcoe.up))) ||
	    (adapter->dcb_set_bitmap & BIT_APP_UPCHG)) {
		adapter->fcoe.up = ffs(up) - 1;
		ixgbe_dcbnl_devreset(netdev);
		ret = DCB_HW_CHG_RST;
	}
#endif

	adapter->dcb_set_bitmap = 0x00;
	return ret;
}

static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	switch (capid) {
	case DCB_CAP_ATTR_PG:
		*cap = true;
		break;
	case DCB_CAP_ATTR_PFC:
		*cap = true;
		break;
	case DCB_CAP_ATTR_UP2TC:
		*cap = false;
		break;
	case DCB_CAP_ATTR_PG_TCS:
		*cap = 0x80;
		break;
	case DCB_CAP_ATTR_PFC_TCS:
		*cap = 0x80;
		break;
	case DCB_CAP_ATTR_GSP:
		*cap = true;
		break;
	case DCB_CAP_ATTR_BCN:
		*cap = false;
		break;
	case DCB_CAP_ATTR_DCBX:
		*cap = adapter->dcbx_cap;
		break;
	default:
		*cap = false;
		break;
	}

	return 0;
}

static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	u8 rval = 0;

	if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
		switch (tcid) {
		case DCB_NUMTCS_ATTR_PG:
			*num = adapter->dcb_cfg.num_tcs.pg_tcs;
			break;
		case DCB_NUMTCS_ATTR_PFC:
			*num = adapter->dcb_cfg.num_tcs.pfc_tcs;
			break;
		default:
			rval = -EINVAL;
			break;
		}
	} else {
		rval = -EINVAL;
	}

	return rval;
}

static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
{
	return -EINVAL;
}

static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	return adapter->dcb_cfg.pfc_mode_enable;
}

static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	adapter->temp_dcb_cfg.pfc_mode_enable = state;
	if (adapter->temp_dcb_cfg.pfc_mode_enable !=
		adapter->dcb_cfg.pfc_mode_enable)
		adapter->dcb_set_bitmap |= BIT_PFC;
}

/**
 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 * @netdev : the corresponding netdev
 * @idtype : identifies the id as ether type or TCP/UDP port number
 * @id: id is either ether type or TCP/UDP port number
 *
 * Returns : on success, returns a non-zero 802.1p user priority bitmap
 * otherwise returns 0 as the invalid user priority bitmap to indicate an
 * error.
 */
static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct dcb_app app = {
				.selector = idtype,
				.protocol = id,
			     };

	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
		return 0;

	return dcb_getapp(netdev, &app);
}

static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
				   struct ieee_ets *ets)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;

	ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;

	/* No IEEE PFC settings available */
	if (!my_ets)
		return 0;

	ets->cbs = my_ets->cbs;
	memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
	memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
	memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
	memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
	return 0;
}

static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
				   struct ieee_ets *ets)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
	int i;
	__u8 max_tc = 0;

	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
		return -EINVAL;

	if (!adapter->ixgbe_ieee_ets) {
		adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
						  GFP_KERNEL);
		if (!adapter->ixgbe_ieee_ets)
			return -ENOMEM;
	}

	memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));

	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		if (ets->prio_tc[i] > max_tc)
			max_tc = ets->prio_tc[i];
	}

	if (max_tc)
		max_tc++;

	if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
		return -EINVAL;

	if (max_tc != netdev_get_num_tc(dev))
		ixgbe_setup_tc(dev, max_tc);

	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
		netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);

	return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
}

static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
				   struct ieee_pfc *pfc)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
	int i;

	pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;

	/* No IEEE PFC settings available */
	if (!my_pfc)
		return 0;

	pfc->pfc_en = my_pfc->pfc_en;
	pfc->mbc = my_pfc->mbc;
	pfc->delay = my_pfc->delay;

	for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
		pfc->requests[i] = adapter->stats.pxoffrxc[i];
		pfc->indications[i] = adapter->stats.pxofftxc[i];
	}

	return 0;
}

static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
				   struct ieee_pfc *pfc)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	u8 *prio_tc;

	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
		return -EINVAL;

	if (!adapter->ixgbe_ieee_pfc) {
		adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
						  GFP_KERNEL);
		if (!adapter->ixgbe_ieee_pfc)
			return -ENOMEM;
	}

	prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
	memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
	return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
}

static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
				   struct dcb_app *app)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	int err = -EINVAL;

	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
		return err;

	err = dcb_ieee_setapp(dev, app);

#ifdef IXGBE_FCOE
	if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
	    app->protocol == ETH_P_FCOE) {
		u8 app_mask = dcb_ieee_getapp_mask(dev, app);

		if (app_mask & (1 << adapter->fcoe.up))
			return err;

		adapter->fcoe.up = app->priority;
		ixgbe_dcbnl_devreset(dev);
	}
#endif
	return 0;
}

static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
				   struct dcb_app *app)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	int err;

	if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
		return -EINVAL;

	err = dcb_ieee_delapp(dev, app);

#ifdef IXGBE_FCOE
	if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
	    app->protocol == ETH_P_FCOE) {
		u8 app_mask = dcb_ieee_getapp_mask(dev, app);

		if (app_mask & (1 << adapter->fcoe.up))
			return err;

		adapter->fcoe.up = app_mask ?
				   ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
		ixgbe_dcbnl_devreset(dev);
	}
#endif
	return err;
}

static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	return adapter->dcbx_cap;
}

static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
{
	struct ixgbe_adapter *adapter = netdev_priv(dev);
	struct ieee_ets ets = {0};
	struct ieee_pfc pfc = {0};

	/* no support for LLD_MANAGED modes or CEE+IEEE */
	if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
	    ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
	    !(mode & DCB_CAP_DCBX_HOST))
		return 1;

	if (mode == adapter->dcbx_cap)
		return 0;

	adapter->dcbx_cap = mode;

	/* ETS and PFC defaults */
	ets.ets_cap = 8;
	pfc.pfc_cap = 8;

	if (mode & DCB_CAP_DCBX_VER_IEEE) {
		ixgbe_dcbnl_ieee_setets(dev, &ets);
		ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
	} else if (mode & DCB_CAP_DCBX_VER_CEE) {
		u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;

		adapter->dcb_set_bitmap |= mask;
		ixgbe_dcbnl_set_all(dev);
	} else {
		/* Drop into single TC mode strict priority as this
		 * indicates CEE and IEEE versions are disabled
		 */
		ixgbe_dcbnl_ieee_setets(dev, &ets);
		ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
		ixgbe_setup_tc(dev, 0);
	}

	return 0;
}

const struct dcbnl_rtnl_ops dcbnl_ops = {
	.ieee_getets	= ixgbe_dcbnl_ieee_getets,
	.ieee_setets	= ixgbe_dcbnl_ieee_setets,
	.ieee_getpfc	= ixgbe_dcbnl_ieee_getpfc,
	.ieee_setpfc	= ixgbe_dcbnl_ieee_setpfc,
	.ieee_setapp	= ixgbe_dcbnl_ieee_setapp,
	.ieee_delapp	= ixgbe_dcbnl_ieee_delapp,
	.getstate	= ixgbe_dcbnl_get_state,
	.setstate	= ixgbe_dcbnl_set_state,
	.getpermhwaddr	= ixgbe_dcbnl_get_perm_hw_addr,
	.setpgtccfgtx	= ixgbe_dcbnl_set_pg_tc_cfg_tx,
	.setpgbwgcfgtx	= ixgbe_dcbnl_set_pg_bwg_cfg_tx,
	.setpgtccfgrx	= ixgbe_dcbnl_set_pg_tc_cfg_rx,
	.setpgbwgcfgrx	= ixgbe_dcbnl_set_pg_bwg_cfg_rx,
	.getpgtccfgtx	= ixgbe_dcbnl_get_pg_tc_cfg_tx,
	.getpgbwgcfgtx	= ixgbe_dcbnl_get_pg_bwg_cfg_tx,
	.getpgtccfgrx	= ixgbe_dcbnl_get_pg_tc_cfg_rx,
	.getpgbwgcfgrx	= ixgbe_dcbnl_get_pg_bwg_cfg_rx,
	.setpfccfg	= ixgbe_dcbnl_set_pfc_cfg,
	.getpfccfg	= ixgbe_dcbnl_get_pfc_cfg,
	.setall		= ixgbe_dcbnl_set_all,
	.getcap		= ixgbe_dcbnl_getcap,
	.getnumtcs	= ixgbe_dcbnl_getnumtcs,
	.setnumtcs	= ixgbe_dcbnl_setnumtcs,
	.getpfcstate	= ixgbe_dcbnl_getpfcstate,
	.setpfcstate	= ixgbe_dcbnl_setpfcstate,
	.getapp		= ixgbe_dcbnl_getapp,
	.getdcbx	= ixgbe_dcbnl_getdcbx,
	.setdcbx	= ixgbe_dcbnl_setdcbx,
};