summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/mscc/ocelot_net.c
blob: 0668d23cdbfa9a155534965511007ecbdaf2c677 (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
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Microsemi Ocelot Switch driver
 *
 * Copyright (c) 2017, 2019 Microsemi Corporation
 */

#include <linux/if_bridge.h>
#include "ocelot.h"
#include "ocelot_vcap.h"

int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
			       struct flow_cls_offload *f,
			       bool ingress)
{
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	if (!ingress)
		return -EOPNOTSUPP;

	switch (f->command) {
	case FLOW_CLS_REPLACE:
		return ocelot_cls_flower_replace(ocelot, port, f, ingress);
	case FLOW_CLS_DESTROY:
		return ocelot_cls_flower_destroy(ocelot, port, f, ingress);
	case FLOW_CLS_STATS:
		return ocelot_cls_flower_stats(ocelot, port, f, ingress);
	default:
		return -EOPNOTSUPP;
	}
}

static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
					struct tc_cls_matchall_offload *f,
					bool ingress)
{
	struct netlink_ext_ack *extack = f->common.extack;
	struct ocelot *ocelot = priv->port.ocelot;
	struct ocelot_policer pol = { 0 };
	struct flow_action_entry *action;
	int port = priv->chip_port;
	int err;

	if (!ingress) {
		NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported");
		return -EOPNOTSUPP;
	}

	switch (f->command) {
	case TC_CLSMATCHALL_REPLACE:
		if (!flow_offload_has_one_action(&f->rule->action)) {
			NL_SET_ERR_MSG_MOD(extack,
					   "Only one action is supported");
			return -EOPNOTSUPP;
		}

		if (priv->tc.block_shared) {
			NL_SET_ERR_MSG_MOD(extack,
					   "Rate limit is not supported on shared blocks");
			return -EOPNOTSUPP;
		}

		action = &f->rule->action.entries[0];

		if (action->id != FLOW_ACTION_POLICE) {
			NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
			return -EOPNOTSUPP;
		}

		if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
			NL_SET_ERR_MSG_MOD(extack,
					   "Only one policer per port is supported");
			return -EEXIST;
		}

		pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
		pol.burst = action->police.burst;

		err = ocelot_port_policer_add(ocelot, port, &pol);
		if (err) {
			NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
			return err;
		}

		priv->tc.police_id = f->cookie;
		priv->tc.offload_cnt++;
		return 0;
	case TC_CLSMATCHALL_DESTROY:
		if (priv->tc.police_id != f->cookie)
			return -ENOENT;

		err = ocelot_port_policer_del(ocelot, port);
		if (err) {
			NL_SET_ERR_MSG_MOD(extack,
					   "Could not delete policer");
			return err;
		}
		priv->tc.police_id = 0;
		priv->tc.offload_cnt--;
		return 0;
	case TC_CLSMATCHALL_STATS:
	default:
		return -EOPNOTSUPP;
	}
}

static int ocelot_setup_tc_block_cb(enum tc_setup_type type,
				    void *type_data,
				    void *cb_priv, bool ingress)
{
	struct ocelot_port_private *priv = cb_priv;

	if (!tc_cls_can_offload_and_chain0(priv->dev, type_data))
		return -EOPNOTSUPP;

	switch (type) {
	case TC_SETUP_CLSMATCHALL:
		return ocelot_setup_tc_cls_matchall(priv, type_data, ingress);
	case TC_SETUP_CLSFLOWER:
		return ocelot_setup_tc_cls_flower(priv, type_data, ingress);
	default:
		return -EOPNOTSUPP;
	}
}

static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type,
				       void *type_data,
				       void *cb_priv)
{
	return ocelot_setup_tc_block_cb(type, type_data,
					cb_priv, true);
}

static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type,
				       void *type_data,
				       void *cb_priv)
{
	return ocelot_setup_tc_block_cb(type, type_data,
					cb_priv, false);
}

static LIST_HEAD(ocelot_block_cb_list);

static int ocelot_setup_tc_block(struct ocelot_port_private *priv,
				 struct flow_block_offload *f)
{
	struct flow_block_cb *block_cb;
	flow_setup_cb_t *cb;

	if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) {
		cb = ocelot_setup_tc_block_cb_ig;
		priv->tc.block_shared = f->block_shared;
	} else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) {
		cb = ocelot_setup_tc_block_cb_eg;
	} else {
		return -EOPNOTSUPP;
	}

	f->driver_block_list = &ocelot_block_cb_list;

	switch (f->command) {
	case FLOW_BLOCK_BIND:
		if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list))
			return -EBUSY;

		block_cb = flow_block_cb_alloc(cb, priv, priv, NULL);
		if (IS_ERR(block_cb))
			return PTR_ERR(block_cb);

		flow_block_cb_add(block_cb, f);
		list_add_tail(&block_cb->driver_list, f->driver_block_list);
		return 0;
	case FLOW_BLOCK_UNBIND:
		block_cb = flow_block_cb_lookup(f->block, cb, priv);
		if (!block_cb)
			return -ENOENT;

		flow_block_cb_remove(block_cb, f);
		list_del(&block_cb->driver_list);
		return 0;
	default:
		return -EOPNOTSUPP;
	}
}

static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type,
			   void *type_data)
{
	struct ocelot_port_private *priv = netdev_priv(dev);

	switch (type) {
	case TC_SETUP_BLOCK:
		return ocelot_setup_tc_block(priv, type_data);
	default:
		return -EOPNOTSUPP;
	}
	return 0;
}

static void ocelot_port_adjust_link(struct net_device *dev)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	ocelot_adjust_link(ocelot, port, dev->phydev);
}

static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
			       bool untagged)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	int port = priv->chip_port;
	int ret;

	ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged);
	if (ret)
		return ret;

	/* Add the port MAC address to with the right VLAN information */
	ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,
			  ENTRYTYPE_LOCKED);

	return 0;
}

static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;
	int ret;

	/* 8021q removes VID 0 on module unload for all interfaces
	 * with VLAN filtering feature. We need to keep it to receive
	 * untagged traffic.
	 */
	if (vid == 0)
		return 0;

	ret = ocelot_vlan_del(ocelot, port, vid);
	if (ret)
		return ret;

	/* Del the port MAC address to with the right VLAN information */
	ocelot_mact_forget(ocelot, dev->dev_addr, vid);

	return 0;
}

static int ocelot_port_open(struct net_device *dev)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	int port = priv->chip_port;
	int err;

	if (priv->serdes) {
		err = phy_set_mode_ext(priv->serdes, PHY_MODE_ETHERNET,
				       ocelot_port->phy_mode);
		if (err) {
			netdev_err(dev, "Could not set mode of SerDes\n");
			return err;
		}
	}

	err = phy_connect_direct(dev, priv->phy, &ocelot_port_adjust_link,
				 ocelot_port->phy_mode);
	if (err) {
		netdev_err(dev, "Could not attach to PHY\n");
		return err;
	}

	dev->phydev = priv->phy;

	phy_attached_info(priv->phy);
	phy_start(priv->phy);

	ocelot_port_enable(ocelot, port, priv->phy);

	return 0;
}

static int ocelot_port_stop(struct net_device *dev)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	phy_disconnect(priv->phy);

	dev->phydev = NULL;

	ocelot_port_disable(ocelot, port);

	return 0;
}

/* Generate the IFH for frame injection
 *
 * The IFH is a 128bit-value
 * bit 127: bypass the analyzer processing
 * bit 56-67: destination mask
 * bit 28-29: pop_cnt: 3 disables all rewriting of the frame
 * bit 20-27: cpu extraction queue mask
 * bit 16: tag type 0: C-tag, 1: S-tag
 * bit 0-11: VID
 */
static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info)
{
	ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21);
	ifh[1] = (0xf00 & info->port) >> 8;
	ifh[2] = (0xff & info->port) << 24;
	ifh[3] = (info->tag_type << 16) | info->vid;

	return 0;
}

static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct skb_shared_info *shinfo = skb_shinfo(skb);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	u32 val, ifh[OCELOT_TAG_LEN / 4];
	struct frame_info info = {};
	u8 grp = 0; /* Send everything on CPU group 0 */
	unsigned int i, count, last;
	int port = priv->chip_port;

	val = ocelot_read(ocelot, QS_INJ_STATUS);
	if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) ||
	    (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp))))
		return NETDEV_TX_BUSY;

	ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
			 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);

	info.port = BIT(port);
	info.tag_type = IFH_TAG_TYPE_C;
	info.vid = skb_vlan_tag_get(skb);

	/* Check if timestamping is needed */
	if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP) {
		info.rew_op = ocelot_port->ptp_cmd;
		if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP)
			info.rew_op |= (ocelot_port->ts_id  % 4) << 3;
	}

	ocelot_gen_ifh(ifh, &info);

	for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
		ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]),
				 QS_INJ_WR, grp);

	count = (skb->len + 3) / 4;
	last = skb->len % 4;
	for (i = 0; i < count; i++)
		ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp);

	/* Add padding */
	while (i < (OCELOT_BUFFER_CELL_SZ / 4)) {
		ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
		i++;
	}

	/* Indicate EOF and valid bytes in last word */
	ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
			 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) |
			 QS_INJ_CTRL_EOF,
			 QS_INJ_CTRL, grp);

	/* Add dummy CRC */
	ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
	skb_tx_timestamp(skb);

	dev->stats.tx_packets++;
	dev->stats.tx_bytes += skb->len;

	if (!ocelot_port_add_txtstamp_skb(ocelot_port, skb)) {
		ocelot_port->ts_id++;
		return NETDEV_TX_OK;
	}

	dev_kfree_skb_any(skb);
	return NETDEV_TX_OK;
}

static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;

	return ocelot_mact_forget(ocelot, addr, ocelot_port->pvid);
}

static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;

	return ocelot_mact_learn(ocelot, PGID_CPU, addr, ocelot_port->pvid,
				 ENTRYTYPE_LOCKED);
}

static void ocelot_set_rx_mode(struct net_device *dev)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	u32 val;
	int i;

	/* This doesn't handle promiscuous mode because the bridge core is
	 * setting IFF_PROMISC on all slave interfaces and all frames would be
	 * forwarded to the CPU port.
	 */
	val = GENMASK(ocelot->num_phys_ports - 1, 0);
	for_each_nonreserved_multicast_dest_pgid(ocelot, i)
		ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);

	__dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync);
}

static int ocelot_port_get_phys_port_name(struct net_device *dev,
					  char *buf, size_t len)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	int port = priv->chip_port;
	int ret;

	ret = snprintf(buf, len, "p%d", port);
	if (ret >= len)
		return -EINVAL;

	return 0;
}

static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	const struct sockaddr *addr = p;

	/* Learn the new net device MAC address in the mac table. */
	ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, ocelot_port->pvid,
			  ENTRYTYPE_LOCKED);
	/* Then forget the previous one. */
	ocelot_mact_forget(ocelot, dev->dev_addr, ocelot_port->pvid);

	ether_addr_copy(dev->dev_addr, addr->sa_data);
	return 0;
}

static void ocelot_get_stats64(struct net_device *dev,
			       struct rtnl_link_stats64 *stats)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	/* Configure the port to read the stats from */
	ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port),
		     SYS_STAT_CFG);

	/* Get Rx stats */
	stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS);
	stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) +
			    ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) +
			    ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) +
			    ocelot_read(ocelot, SYS_COUNT_RX_LONGS) +
			    ocelot_read(ocelot, SYS_COUNT_RX_64) +
			    ocelot_read(ocelot, SYS_COUNT_RX_65_127) +
			    ocelot_read(ocelot, SYS_COUNT_RX_128_255) +
			    ocelot_read(ocelot, SYS_COUNT_RX_256_1023) +
			    ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) +
			    ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX);
	stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST);
	stats->rx_dropped = dev->stats.rx_dropped;

	/* Get Tx stats */
	stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS);
	stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) +
			    ocelot_read(ocelot, SYS_COUNT_TX_65_127) +
			    ocelot_read(ocelot, SYS_COUNT_TX_128_511) +
			    ocelot_read(ocelot, SYS_COUNT_TX_512_1023) +
			    ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) +
			    ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX);
	stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) +
			    ocelot_read(ocelot, SYS_COUNT_TX_AGING);
	stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION);
}

static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
			       struct net_device *dev,
			       const unsigned char *addr,
			       u16 vid, u16 flags,
			       struct netlink_ext_ack *extack)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	return ocelot_fdb_add(ocelot, port, addr, vid);
}

static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
			       struct net_device *dev,
			       const unsigned char *addr, u16 vid)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	return ocelot_fdb_del(ocelot, port, addr, vid);
}

static int ocelot_port_fdb_dump(struct sk_buff *skb,
				struct netlink_callback *cb,
				struct net_device *dev,
				struct net_device *filter_dev, int *idx)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	struct ocelot_dump_ctx dump = {
		.dev = dev,
		.skb = skb,
		.cb = cb,
		.idx = *idx,
	};
	int port = priv->chip_port;
	int ret;

	ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump);

	*idx = dump.idx;

	return ret;
}

static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
				  u16 vid)
{
	return ocelot_vlan_vid_add(dev, vid, false, false);
}

static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
				   u16 vid)
{
	return ocelot_vlan_vid_del(dev, vid);
}

static void ocelot_vlan_mode(struct ocelot *ocelot, int port,
			     netdev_features_t features)
{
	u32 val;

	/* Filtering */
	val = ocelot_read(ocelot, ANA_VLANMASK);
	if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
		val |= BIT(port);
	else
		val &= ~BIT(port);
	ocelot_write(ocelot, val, ANA_VLANMASK);
}

static int ocelot_set_features(struct net_device *dev,
			       netdev_features_t features)
{
	netdev_features_t changed = dev->features ^ features;
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
	    priv->tc.offload_cnt) {
		netdev_err(dev,
			   "Cannot disable HW TC offload while offloads active\n");
		return -EBUSY;
	}

	if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
		ocelot_vlan_mode(ocelot, port, features);

	return 0;
}

static int ocelot_get_port_parent_id(struct net_device *dev,
				     struct netdev_phys_item_id *ppid)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;

	ppid->id_len = sizeof(ocelot->base_mac);
	memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len);

	return 0;
}

static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	/* If the attached PHY device isn't capable of timestamping operations,
	 * use our own (when possible).
	 */
	if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) {
		switch (cmd) {
		case SIOCSHWTSTAMP:
			return ocelot_hwstamp_set(ocelot, port, ifr);
		case SIOCGHWTSTAMP:
			return ocelot_hwstamp_get(ocelot, port, ifr);
		}
	}

	return phy_mii_ioctl(dev->phydev, ifr, cmd);
}

static const struct net_device_ops ocelot_port_netdev_ops = {
	.ndo_open			= ocelot_port_open,
	.ndo_stop			= ocelot_port_stop,
	.ndo_start_xmit			= ocelot_port_xmit,
	.ndo_set_rx_mode		= ocelot_set_rx_mode,
	.ndo_get_phys_port_name		= ocelot_port_get_phys_port_name,
	.ndo_set_mac_address		= ocelot_port_set_mac_address,
	.ndo_get_stats64		= ocelot_get_stats64,
	.ndo_fdb_add			= ocelot_port_fdb_add,
	.ndo_fdb_del			= ocelot_port_fdb_del,
	.ndo_fdb_dump			= ocelot_port_fdb_dump,
	.ndo_vlan_rx_add_vid		= ocelot_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid		= ocelot_vlan_rx_kill_vid,
	.ndo_set_features		= ocelot_set_features,
	.ndo_get_port_parent_id		= ocelot_get_port_parent_id,
	.ndo_setup_tc			= ocelot_setup_tc,
	.ndo_do_ioctl			= ocelot_ioctl,
};

static void ocelot_port_get_strings(struct net_device *netdev, u32 sset,
				    u8 *data)
{
	struct ocelot_port_private *priv = netdev_priv(netdev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	ocelot_get_strings(ocelot, port, sset, data);
}

static void ocelot_port_get_ethtool_stats(struct net_device *dev,
					  struct ethtool_stats *stats,
					  u64 *data)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	ocelot_get_ethtool_stats(ocelot, port, data);
}

static int ocelot_port_get_sset_count(struct net_device *dev, int sset)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	return ocelot_get_sset_count(ocelot, port, sset);
}

static int ocelot_port_get_ts_info(struct net_device *dev,
				   struct ethtool_ts_info *info)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;

	if (!ocelot->ptp)
		return ethtool_op_get_ts_info(dev, info);

	return ocelot_get_ts_info(ocelot, port, info);
}

static const struct ethtool_ops ocelot_ethtool_ops = {
	.get_strings		= ocelot_port_get_strings,
	.get_ethtool_stats	= ocelot_port_get_ethtool_stats,
	.get_sset_count		= ocelot_port_get_sset_count,
	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
	.get_ts_info		= ocelot_port_get_ts_info,
};

static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port,
					   struct switchdev_trans *trans,
					   u8 state)
{
	if (switchdev_trans_ph_prepare(trans))
		return;

	ocelot_bridge_stp_state_set(ocelot, port, state);
}

static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port,
					unsigned long ageing_clock_t)
{
	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
	u32 ageing_time = jiffies_to_msecs(ageing_jiffies);

	ocelot_set_ageing_time(ocelot, ageing_time);
}

static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc)
{
	u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
			    ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
			    ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;
	u32 val = 0;

	if (mc)
		val = cpu_fwd_mcast;

	ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast,
		       ANA_PORT_CPU_FWD_CFG, port);
}

static int ocelot_port_attr_set(struct net_device *dev,
				const struct switchdev_attr *attr,
				struct switchdev_trans *trans)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot *ocelot = priv->port.ocelot;
	int port = priv->chip_port;
	int err = 0;

	switch (attr->id) {
	case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
		ocelot_port_attr_stp_state_set(ocelot, port, trans,
					       attr->u.stp_state);
		break;
	case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
		ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time);
		break;
	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
		ocelot_port_vlan_filtering(ocelot, port,
					   attr->u.vlan_filtering);
		break;
	case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
		ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled);
		break;
	default:
		err = -EOPNOTSUPP;
		break;
	}

	return err;
}

static int ocelot_port_obj_add_vlan(struct net_device *dev,
				    const struct switchdev_obj_port_vlan *vlan,
				    struct switchdev_trans *trans)
{
	int ret;
	u16 vid;

	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
		ret = ocelot_vlan_vid_add(dev, vid,
					  vlan->flags & BRIDGE_VLAN_INFO_PVID,
					  vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
		if (ret)
			return ret;
	}

	return 0;
}

static int ocelot_port_vlan_del_vlan(struct net_device *dev,
				     const struct switchdev_obj_port_vlan *vlan)
{
	int ret;
	u16 vid;

	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
		ret = ocelot_vlan_vid_del(dev, vid);

		if (ret)
			return ret;
	}

	return 0;
}

static int ocelot_port_obj_add_mdb(struct net_device *dev,
				   const struct switchdev_obj_port_mdb *mdb,
				   struct switchdev_trans *trans)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	int port = priv->chip_port;

	if (switchdev_trans_ph_prepare(trans))
		return 0;

	return ocelot_port_mdb_add(ocelot, port, mdb);
}

static int ocelot_port_obj_del_mdb(struct net_device *dev,
				   const struct switchdev_obj_port_mdb *mdb)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	int port = priv->chip_port;

	return ocelot_port_mdb_del(ocelot, port, mdb);
}

static int ocelot_port_obj_add(struct net_device *dev,
			       const struct switchdev_obj *obj,
			       struct switchdev_trans *trans,
			       struct netlink_ext_ack *extack)
{
	int ret = 0;

	switch (obj->id) {
	case SWITCHDEV_OBJ_ID_PORT_VLAN:
		ret = ocelot_port_obj_add_vlan(dev,
					       SWITCHDEV_OBJ_PORT_VLAN(obj),
					       trans);
		break;
	case SWITCHDEV_OBJ_ID_PORT_MDB:
		ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj),
					      trans);
		break;
	default:
		return -EOPNOTSUPP;
	}

	return ret;
}

static int ocelot_port_obj_del(struct net_device *dev,
			       const struct switchdev_obj *obj)
{
	int ret = 0;

	switch (obj->id) {
	case SWITCHDEV_OBJ_ID_PORT_VLAN:
		ret = ocelot_port_vlan_del_vlan(dev,
						SWITCHDEV_OBJ_PORT_VLAN(obj));
		break;
	case SWITCHDEV_OBJ_ID_PORT_MDB:
		ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
		break;
	default:
		return -EOPNOTSUPP;
	}

	return ret;
}

/* Checks if the net_device instance given to us originate from our driver. */
static bool ocelot_netdevice_dev_check(const struct net_device *dev)
{
	return dev->netdev_ops == &ocelot_port_netdev_ops;
}

static int ocelot_netdevice_port_event(struct net_device *dev,
				       unsigned long event,
				       struct netdev_notifier_changeupper_info *info)
{
	struct ocelot_port_private *priv = netdev_priv(dev);
	struct ocelot_port *ocelot_port = &priv->port;
	struct ocelot *ocelot = ocelot_port->ocelot;
	int port = priv->chip_port;
	int err = 0;

	switch (event) {
	case NETDEV_CHANGEUPPER:
		if (netif_is_bridge_master(info->upper_dev)) {
			if (info->linking) {
				err = ocelot_port_bridge_join(ocelot, port,
							      info->upper_dev);
			} else {
				err = ocelot_port_bridge_leave(ocelot, port,
							       info->upper_dev);
			}
		}
		if (netif_is_lag_master(info->upper_dev)) {
			if (info->linking)
				err = ocelot_port_lag_join(ocelot, port,
							   info->upper_dev);
			else
				ocelot_port_lag_leave(ocelot, port,
						      info->upper_dev);
		}
		break;
	default:
		break;
	}

	return err;
}

static int ocelot_netdevice_event(struct notifier_block *unused,
				  unsigned long event, void *ptr)
{
	struct netdev_notifier_changeupper_info *info = ptr;
	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
	int ret = 0;

	if (!ocelot_netdevice_dev_check(dev))
		return 0;

	if (event == NETDEV_PRECHANGEUPPER &&
	    netif_is_lag_master(info->upper_dev)) {
		struct netdev_lag_upper_info *lag_upper_info = info->upper_info;
		struct netlink_ext_ack *extack;

		if (lag_upper_info &&
		    lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
			extack = netdev_notifier_info_to_extack(&info->info);
			NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type");

			ret = -EINVAL;
			goto notify;
		}
	}

	if (netif_is_lag_master(dev)) {
		struct net_device *slave;
		struct list_head *iter;

		netdev_for_each_lower_dev(dev, slave, iter) {
			ret = ocelot_netdevice_port_event(slave, event, info);
			if (ret)
				goto notify;
		}
	} else {
		ret = ocelot_netdevice_port_event(dev, event, info);
	}

notify:
	return notifier_from_errno(ret);
}

struct notifier_block ocelot_netdevice_nb __read_mostly = {
	.notifier_call = ocelot_netdevice_event,
};

static int ocelot_switchdev_event(struct notifier_block *unused,
				  unsigned long event, void *ptr)
{
	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
	int err;

	switch (event) {
	case SWITCHDEV_PORT_ATTR_SET:
		err = switchdev_handle_port_attr_set(dev, ptr,
						     ocelot_netdevice_dev_check,
						     ocelot_port_attr_set);
		return notifier_from_errno(err);
	}

	return NOTIFY_DONE;
}

struct notifier_block ocelot_switchdev_nb __read_mostly = {
	.notifier_call = ocelot_switchdev_event,
};

static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
					   unsigned long event, void *ptr)
{
	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
	int err;

	switch (event) {
		/* Blocking events. */
	case SWITCHDEV_PORT_OBJ_ADD:
		err = switchdev_handle_port_obj_add(dev, ptr,
						    ocelot_netdevice_dev_check,
						    ocelot_port_obj_add);
		return notifier_from_errno(err);
	case SWITCHDEV_PORT_OBJ_DEL:
		err = switchdev_handle_port_obj_del(dev, ptr,
						    ocelot_netdevice_dev_check,
						    ocelot_port_obj_del);
		return notifier_from_errno(err);
	case SWITCHDEV_PORT_ATTR_SET:
		err = switchdev_handle_port_attr_set(dev, ptr,
						     ocelot_netdevice_dev_check,
						     ocelot_port_attr_set);
		return notifier_from_errno(err);
	}

	return NOTIFY_DONE;
}

struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {
	.notifier_call = ocelot_switchdev_blocking_event,
};

int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target,
		      struct phy_device *phy)
{
	struct ocelot_port_private *priv;
	struct ocelot_port *ocelot_port;
	struct net_device *dev;
	int err;

	dev = alloc_etherdev(sizeof(struct ocelot_port_private));
	if (!dev)
		return -ENOMEM;
	SET_NETDEV_DEV(dev, ocelot->dev);
	priv = netdev_priv(dev);
	priv->dev = dev;
	priv->phy = phy;
	priv->chip_port = port;
	ocelot_port = &priv->port;
	ocelot_port->ocelot = ocelot;
	ocelot_port->target = target;
	ocelot->ports[port] = ocelot_port;

	dev->netdev_ops = &ocelot_port_netdev_ops;
	dev->ethtool_ops = &ocelot_ethtool_ops;

	dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS |
		NETIF_F_HW_TC;
	dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;

	memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN);
	dev->dev_addr[ETH_ALEN - 1] += port;
	ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
			  ENTRYTYPE_LOCKED);

	ocelot_init_port(ocelot, port);

	err = register_netdev(dev);
	if (err) {
		dev_err(ocelot->dev, "register_netdev failed\n");
		free_netdev(dev);
	}

	return err;
}