Repository navigation
Expand file tree
/
Copy pathdsa.h
More file actions
1421 lines (1207 loc) · 42.3 KB
/
Copy pathdsa.h
File metadata and controls
1421 lines (1207 loc) · 42.3 KB
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
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
* Copyright (c) 2008-2009 Marvell Semiconductor
*/
#ifndef __LINUX_NET_DSA_H
#define __LINUX_NET_DSA_H
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/list.h>
#include <linux/notifier.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/of.h>
#include <linux/ethtool.h>
#include <linux/net_tstamp.h>
#include <linux/phy.h>
#include <linux/platform_data/dsa.h>
#include <linux/phylink.h>
#include <net/devlink.h>
#include <net/switchdev.h>
struct dsa_8021q_context;
struct tc_action;
#define DSA_TAG_PROTO_NONE_VALUE 0
#define DSA_TAG_PROTO_BRCM_VALUE 1
#define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2
#define DSA_TAG_PROTO_DSA_VALUE 3
#define DSA_TAG_PROTO_EDSA_VALUE 4
#define DSA_TAG_PROTO_GSWIP_VALUE 5
#define DSA_TAG_PROTO_KSZ9477_VALUE 6
#define DSA_TAG_PROTO_KSZ9893_VALUE 7
#define DSA_TAG_PROTO_LAN9303_VALUE 8
#define DSA_TAG_PROTO_MTK_VALUE 9
#define DSA_TAG_PROTO_QCA_VALUE 10
#define DSA_TAG_PROTO_TRAILER_VALUE 11
#define DSA_TAG_PROTO_8021Q_VALUE 12
#define DSA_TAG_PROTO_SJA1105_VALUE 13
#define DSA_TAG_PROTO_KSZ8795_VALUE 14
#define DSA_TAG_PROTO_OCELOT_VALUE 15
#define DSA_TAG_PROTO_AR9331_VALUE 16
#define DSA_TAG_PROTO_RTL4_A_VALUE 17
#define DSA_TAG_PROTO_HELLCREEK_VALUE 18
#define DSA_TAG_PROTO_XRS700X_VALUE 19
#define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20
#define DSA_TAG_PROTO_SEVILLE_VALUE 21
#define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22
#define DSA_TAG_PROTO_SJA1110_VALUE 23
#define DSA_TAG_PROTO_RTL8_4_VALUE 24
#define DSA_TAG_PROTO_RTL8_4T_VALUE 25
#define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26
#define DSA_TAG_PROTO_LAN937X_VALUE 27
#define DSA_TAG_PROTO_VSC73XX_8021Q_VALUE 28
#define DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE 29
#define DSA_TAG_PROTO_YT921X_VALUE 30
#define DSA_TAG_PROTO_MXL_GSW1XX_VALUE 31
#define DSA_TAG_PROTO_MXL862_VALUE 32
#define DSA_TAG_PROTO_NETC_VALUE 33
#define DSA_TAG_PROTO_KSZ8463_VALUE 34
#define DSA_TAG_PROTO_MT7628_VALUE 35
enum dsa_tag_protocol {
DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE,
DSA_TAG_PROTO_BRCM_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE,
DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE,
DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE,
DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE,
DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE,
DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE,
DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE,
DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE,
DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE,
DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE,
DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE,
DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE,
DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE,
DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE,
DSA_TAG_PROTO_YT921X = DSA_TAG_PROTO_YT921X_VALUE,
DSA_TAG_PROTO_MXL_GSW1XX = DSA_TAG_PROTO_MXL_GSW1XX_VALUE,
DSA_TAG_PROTO_MXL862 = DSA_TAG_PROTO_MXL862_VALUE,
DSA_TAG_PROTO_NETC = DSA_TAG_PROTO_NETC_VALUE,
DSA_TAG_PROTO_KSZ8463 = DSA_TAG_PROTO_KSZ8463_VALUE,
DSA_TAG_PROTO_MT7628 = DSA_TAG_PROTO_MT7628_VALUE,
};
struct dsa_switch;
struct dsa_device_ops {
struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
int *offset);
int (*connect)(struct dsa_switch *ds);
void (*disconnect)(struct dsa_switch *ds);
unsigned int needed_headroom;
unsigned int needed_tailroom;
const char *name;
enum dsa_tag_protocol proto;
/* Some tagging protocols either mangle or shift the destination MAC
* address, in which case the DSA conduit would drop packets on ingress
* if what it understands out of the destination MAC address is not in
* its RX filter.
*/
bool promisc_on_conduit;
};
struct dsa_lag {
struct net_device *dev;
unsigned int id;
struct mutex fdb_lock;
struct list_head fdbs;
refcount_t refcount;
};
struct dsa_switch_tree {
struct list_head list;
/* List of switch ports */
struct list_head ports;
/* Notifier chain for switch-wide events */
struct raw_notifier_head nh;
/* Tree identifier */
unsigned int index;
/* Number of switches attached to this tree */
struct kref refcount;
/* Maps offloaded LAG netdevs to a zero-based linear ID for
* drivers that need it.
*/
struct dsa_lag **lags;
/* Tagging protocol operations */
const struct dsa_device_ops *tag_ops;
/* Default tagging protocol preferred by the switches in this
* tree.
*/
enum dsa_tag_protocol default_proto;
/* Has this tree been applied to the hardware? */
bool setup;
/*
* Configuration data for the platform device that owns
* this dsa switch tree instance.
*/
struct dsa_platform_data *pd;
/* List of DSA links composing the routing table */
struct list_head rtable;
/* Length of "lags" array */
unsigned int lags_len;
/* Track the largest switch index within a tree */
unsigned int last_switch;
};
/* LAG IDs are one-based, the dst->lags array is zero-based */
#define dsa_lags_foreach_id(_id, _dst) \
for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \
if ((_dst)->lags[(_id) - 1])
#define dsa_lag_foreach_port(_dp, _dst, _lag) \
list_for_each_entry((_dp), &(_dst)->ports, list) \
if (dsa_port_offloads_lag((_dp), (_lag)))
#define dsa_hsr_foreach_port(_dp, _ds, _hsr) \
list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr))
static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst,
unsigned int id)
{
/* DSA LAG IDs are one-based, dst->lags is zero-based */
return dst->lags[id - 1];
}
static inline int dsa_lag_id(struct dsa_switch_tree *dst,
struct net_device *lag_dev)
{
unsigned int id;
dsa_lags_foreach_id(id, dst) {
struct dsa_lag *lag = dsa_lag_by_id(dst, id);
if (lag->dev == lag_dev)
return lag->id;
}
return -ENODEV;
}
/* TC matchall action types */
enum dsa_port_mall_action_type {
DSA_PORT_MALL_MIRROR,
DSA_PORT_MALL_POLICER,
};
/* TC mirroring entry */
struct dsa_mall_mirror_tc_entry {
u8 to_local_port;
bool ingress;
};
/* TC matchall entry */
struct dsa_mall_tc_entry {
struct list_head list;
unsigned long cookie;
enum dsa_port_mall_action_type type;
union {
struct dsa_mall_mirror_tc_entry mirror;
struct flow_action_police policer;
};
};
struct dsa_bridge {
struct net_device *dev;
unsigned int num;
bool tx_fwd_offload;
refcount_t refcount;
};
struct dsa_port {
/* A CPU port is physically connected to a conduit device. A user port
* exposes a network device to user-space, called 'user' here.
*/
union {
struct net_device *conduit;
struct net_device *user;
};
/* Copy of the tagging protocol operations, for quicker access
* in the data path. Valid only for the CPU ports.
*/
const struct dsa_device_ops *tag_ops;
/* Copies for faster access in conduit receive hot path */
struct dsa_switch_tree *dst;
struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
struct dsa_switch *ds;
unsigned int index;
enum {
DSA_PORT_TYPE_UNUSED = 0,
DSA_PORT_TYPE_CPU,
DSA_PORT_TYPE_DSA,
DSA_PORT_TYPE_USER,
} type;
const char *name;
struct dsa_port *cpu_dp;
u8 mac[ETH_ALEN];
u8 stp_state;
/* Warning: the following bit fields are not atomic, and updating them
* can only be done from code paths where concurrency is not possible
* (probe time or under rtnl_lock).
*/
u8 vlan_filtering:1;
/* Managed by DSA on user ports and by drivers on CPU and DSA ports */
u8 learning:1;
u8 lag_tx_enabled:1;
/* conduit state bits, valid only on CPU ports */
u8 conduit_admin_up:1;
u8 conduit_oper_up:1;
/* Valid only on user ports */
u8 cpu_port_in_lag:1;
u8 setup:1;
struct device_node *dn;
unsigned int ageing_time;
struct dsa_bridge *bridge;
struct devlink_port devlink_port;
struct phylink *pl;
struct phylink_config pl_config;
netdevice_tracker conduit_tracker;
struct dsa_lag *lag;
struct net_device *hsr_dev;
struct list_head list;
/*
* Original copy of the conduit netdev ethtool_ops
*/
const struct ethtool_ops *orig_ethtool_ops;
/* List of MAC addresses that must be forwarded on this port.
* These are only valid on CPU ports and DSA links.
*/
struct mutex addr_lists_lock;
struct list_head fdbs;
struct list_head mdbs;
struct mutex vlans_lock;
union {
/* List of VLANs that CPU and DSA ports are members of.
* Access to this is serialized by the sleepable @vlans_lock.
*/
struct list_head vlans;
/* List of VLANs that user ports are members of.
* Access to this is serialized by netif_addr_lock_bh().
*/
struct list_head user_vlans;
};
};
static inline struct dsa_port *
dsa_phylink_to_port(struct phylink_config *config)
{
return container_of(config, struct dsa_port, pl_config);
}
/* TODO: ideally DSA ports would have a single dp->link_dp member,
* and no dst->rtable nor this struct dsa_link would be needed,
* but this would require some more complex tree walking,
* so keep it stupid at the moment and list them all.
*/
struct dsa_link {
struct dsa_port *dp;
struct dsa_port *link_dp;
struct list_head list;
};
enum dsa_db_type {
DSA_DB_PORT,
DSA_DB_LAG,
DSA_DB_BRIDGE,
};
struct dsa_db {
enum dsa_db_type type;
union {
const struct dsa_port *dp;
struct dsa_lag lag;
struct dsa_bridge bridge;
};
};
struct dsa_mac_addr {
unsigned char addr[ETH_ALEN];
u16 vid;
refcount_t refcount;
struct list_head list;
struct dsa_db db;
};
struct dsa_vlan {
u16 vid;
refcount_t refcount;
struct list_head list;
};
struct dsa_switch {
struct device *dev;
/*
* Parent switch tree, and switch index.
*/
struct dsa_switch_tree *dst;
unsigned int index;
/* Warning: the following bit fields are not atomic, and updating them
* can only be done from code paths where concurrency is not possible
* (probe time or under rtnl_lock).
*/
u32 setup:1;
/* Disallow bridge core from requesting different VLAN awareness
* settings on ports if not hardware-supported
*/
u32 vlan_filtering_is_global:1;
/* Keep VLAN filtering enabled on ports not offloading any upper */
u32 needs_standalone_vlan_filtering:1;
/* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges
* that have vlan_filtering=0. All drivers should ideally set this (and
* then the option would get removed), but it is unknown whether this
* would break things or not.
*/
u32 configure_vlan_while_not_filtering:1;
/* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames.
* DEPRECATED: Do NOT set this field in new drivers. Instead look at
* the dsa_software_vlan_untag() comments.
*/
u32 untag_bridge_pvid:1;
/* Pop the default_pvid of VLAN-aware bridge ports from tagged frames.
* Useful if the switch cannot preserve the VLAN tag as seen on the
* wire for user port ingress, and chooses to send all frames as
* VLAN-tagged to the CPU, including those which were originally
* untagged.
*/
u32 untag_vlan_aware_bridge_pvid:1;
/* Let DSA manage the FDB entries towards the
* CPU, based on the software bridge database.
*/
u32 assisted_learning_on_cpu_port:1;
/* In case vlan_filtering_is_global is set, the VLAN awareness state
* should be retrieved from here and not from the per-port settings.
*/
u32 vlan_filtering:1;
/* For switches that only have the MRU configurable. To ensure the
* configured MTU is not exceeded, normalization of MRU on all bridged
* interfaces is needed.
*/
u32 mtu_enforcement_ingress:1;
/* Drivers that isolate the FDBs of multiple bridges must set this
* to true to receive the bridge as an argument in .port_fdb_{add,del}
* and .port_mdb_{add,del}. Otherwise, the bridge.num will always be
* passed as zero.
*/
u32 fdb_isolation:1;
/* Drivers that have global DSCP mapping settings must set this to
* true to automatically apply the settings to all ports.
*/
u32 dscp_prio_mapping_is_global:1;
/* Listener for switch fabric events */
struct notifier_block nb;
/*
* Give the switch driver somewhere to hang its private data
* structure.
*/
void *priv;
void *tagger_data;
/*
* Configuration data for this switch.
*/
struct dsa_chip_data *cd;
/*
* The switch operations.
*/
const struct dsa_switch_ops *ops;
/*
* Allow a DSA switch driver to override the phylink MAC ops
*/
const struct phylink_mac_ops *phylink_mac_ops;
/*
* User mii_bus and devices for the individual ports.
*/
u32 phys_mii_mask;
struct mii_bus *user_mii_bus;
/* Ageing Time limits in msecs */
unsigned int ageing_time_min;
unsigned int ageing_time_max;
/* Storage for drivers using tag_8021q */
struct dsa_8021q_context *tag_8021q_ctx;
/* devlink used to represent this switch device */
struct devlink *devlink;
/* Number of switch port queues */
unsigned int num_tx_queues;
/* Drivers that benefit from having an ID associated with each
* offloaded LAG should set this to the maximum number of
* supported IDs. DSA will then maintain a mapping of _at
* least_ these many IDs, accessible to drivers via
* dsa_lag_id().
*/
unsigned int num_lag_ids;
/* Drivers that support bridge forwarding offload or FDB isolation
* should set this to the maximum number of bridges spanning the same
* switch tree (or all trees, in the case of cross-tree bridging
* support) that can be offloaded.
*/
unsigned int max_num_bridges;
unsigned int num_ports;
};
static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
{
struct dsa_switch_tree *dst = ds->dst;
struct dsa_port *dp;
list_for_each_entry(dp, &dst->ports, list)
if (dp->ds == ds && dp->index == p)
return dp;
return NULL;
}
static inline bool dsa_port_is_dsa(struct dsa_port *port)
{
return port->type == DSA_PORT_TYPE_DSA;
}
static inline bool dsa_port_is_cpu(struct dsa_port *port)
{
return port->type == DSA_PORT_TYPE_CPU;
}
static inline bool dsa_port_is_user(struct dsa_port *dp)
{
return dp->type == DSA_PORT_TYPE_USER;
}
static inline bool dsa_port_is_unused(struct dsa_port *dp)
{
return dp->type == DSA_PORT_TYPE_UNUSED;
}
static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp)
{
return dsa_port_is_cpu(dp) && dp->conduit_admin_up &&
dp->conduit_oper_up;
}
static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
{
return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
}
static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
{
return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
}
static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
{
return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
}
static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
{
return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
}
#define dsa_tree_for_each_user_port(_dp, _dst) \
list_for_each_entry((_dp), &(_dst)->ports, list) \
if (dsa_port_is_user((_dp)))
#define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \
list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \
if (dsa_port_is_user((_dp)))
#define dsa_tree_for_each_cpu_port(_dp, _dst) \
list_for_each_entry((_dp), &(_dst)->ports, list) \
if (dsa_port_is_cpu((_dp)))
#define dsa_switch_for_each_port(_dp, _ds) \
list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
if ((_dp)->ds == (_ds))
#define dsa_switch_for_each_port_safe(_dp, _next, _ds) \
list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \
if ((_dp)->ds == (_ds))
#define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \
list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \
if ((_dp)->ds == (_ds))
#define dsa_switch_for_each_available_port(_dp, _ds) \
dsa_switch_for_each_port((_dp), (_ds)) \
if (!dsa_port_is_unused((_dp)))
#define dsa_switch_for_each_user_port(_dp, _ds) \
dsa_switch_for_each_port((_dp), (_ds)) \
if (dsa_port_is_user((_dp)))
#define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \
dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \
if (dsa_port_is_user((_dp)))
#define dsa_switch_for_each_cpu_port(_dp, _ds) \
dsa_switch_for_each_port((_dp), (_ds)) \
if (dsa_port_is_cpu((_dp)))
#define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \
dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \
if (dsa_port_is_cpu((_dp)))
static inline u32 dsa_user_ports(struct dsa_switch *ds)
{
struct dsa_port *dp;
u32 mask = 0;
dsa_switch_for_each_user_port(dp, ds)
mask |= BIT(dp->index);
return mask;
}
static inline u32 dsa_cpu_ports(struct dsa_switch *ds)
{
struct dsa_port *cpu_dp;
u32 mask = 0;
dsa_switch_for_each_cpu_port(cpu_dp, ds)
mask |= BIT(cpu_dp->index);
return mask;
}
/* Return the local port used to reach an arbitrary switch device */
static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device)
{
struct dsa_switch_tree *dst = ds->dst;
struct dsa_link *dl;
list_for_each_entry(dl, &dst->rtable, list)
if (dl->dp->ds == ds && dl->link_dp->ds->index == device)
return dl->dp->index;
return ds->num_ports;
}
/* Return the local port used to reach an arbitrary switch port */
static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
int port)
{
if (device == ds->index)
return port;
else
return dsa_routing_port(ds, device);
}
/* Return the local port used to reach the dedicated CPU port */
static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
{
const struct dsa_port *dp = dsa_to_port(ds, port);
const struct dsa_port *cpu_dp = dp->cpu_dp;
if (!cpu_dp)
return port;
return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
}
/* Return true if this is the local port used to reach the CPU port */
static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
{
if (dsa_is_unused_port(ds, port))
return false;
return port == dsa_upstream_port(ds, port);
}
/* Return true if this is a DSA port leading away from the CPU */
static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port)
{
return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port);
}
/* Return the local port used to reach the CPU port */
static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds)
{
struct dsa_port *dp;
dsa_switch_for_each_available_port(dp, ds) {
return dsa_upstream_port(ds, dp->index);
}
return ds->num_ports;
}
/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
* that the routing port from @downstream_ds to @upstream_ds is also the port
* which @downstream_ds uses to reach its dedicated CPU.
*/
static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
struct dsa_switch *downstream_ds)
{
int routing_port;
if (upstream_ds == downstream_ds)
return true;
routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
return dsa_is_upstream_port(downstream_ds, routing_port);
}
static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
{
const struct dsa_switch *ds = dp->ds;
if (ds->vlan_filtering_is_global)
return ds->vlan_filtering;
else
return dp->vlan_filtering;
}
static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp)
{
return dp->lag ? dp->lag->id : 0;
}
static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp)
{
return dp->lag ? dp->lag->dev : NULL;
}
static inline bool dsa_port_offloads_lag(struct dsa_port *dp,
const struct dsa_lag *lag)
{
return dsa_port_lag_dev_get(dp) == lag->dev;
}
static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp)
{
if (dp->cpu_port_in_lag)
return dsa_port_lag_dev_get(dp->cpu_dp);
return dp->cpu_dp->conduit;
}
static inline
struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
{
if (!dp->bridge)
return NULL;
if (dp->lag)
return dp->lag->dev;
else if (dp->hsr_dev)
return dp->hsr_dev;
return dp->user;
}
static inline struct net_device *
dsa_port_bridge_dev_get(const struct dsa_port *dp)
{
return dp->bridge ? dp->bridge->dev : NULL;
}
static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp)
{
return dp->bridge ? dp->bridge->num : 0;
}
static inline bool dsa_port_bridge_same(const struct dsa_port *a,
const struct dsa_port *b)
{
struct net_device *br_a = dsa_port_bridge_dev_get(a);
struct net_device *br_b = dsa_port_bridge_dev_get(b);
/* Standalone ports are not in the same bridge with one another */
return (!br_a || !br_b) ? false : (br_a == br_b);
}
static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
const struct net_device *dev)
{
return dsa_port_to_bridge_port(dp) == dev;
}
static inline bool
dsa_port_offloads_bridge_dev(struct dsa_port *dp,
const struct net_device *bridge_dev)
{
/* DSA ports connected to a bridge, and event was emitted
* for the bridge.
*/
return dsa_port_bridge_dev_get(dp) == bridge_dev;
}
static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
const struct dsa_bridge *bridge)
{
return dsa_port_bridge_dev_get(dp) == bridge->dev;
}
/* Returns true if any port of this tree offloads the given net_device */
static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
const struct net_device *dev)
{
struct dsa_port *dp;
list_for_each_entry(dp, &dst->ports, list)
if (dsa_port_offloads_bridge_port(dp, dev))
return true;
return false;
}
/* Returns true if any port of this tree offloads the given bridge */
static inline bool
dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst,
const struct net_device *bridge_dev)
{
struct dsa_port *dp;
list_for_each_entry(dp, &dst->ports, list)
if (dsa_port_offloads_bridge_dev(dp, bridge_dev))
return true;
return false;
}
#define dsa_switch_for_each_bridge_member(_dp, _ds, _bdev) \
dsa_switch_for_each_user_port(_dp, _ds) \
if (dsa_port_offloads_bridge_dev(_dp, _bdev))
static inline u32
dsa_bridge_ports(struct dsa_switch *ds, const struct net_device *bdev)
{
struct dsa_port *dp;
u32 mask = 0;
dsa_switch_for_each_bridge_member(dp, ds, bdev)
mask |= BIT(dp->index);
return mask;
}
static inline bool dsa_port_tree_same(const struct dsa_port *a,
const struct dsa_port *b)
{
return a->ds->dst == b->ds->dst;
}
typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
bool is_static, void *data);
struct dsa_switch_ops {
/*
* Tagging protocol helpers called for the CPU ports and DSA links.
* @get_tag_protocol retrieves the initial tagging protocol and is
* mandatory. Switches which can operate using multiple tagging
* protocols should implement @change_tag_protocol and report in
* @get_tag_protocol the tagger in current use.
*/
enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
int port,
enum dsa_tag_protocol mprot);
int (*change_tag_protocol)(struct dsa_switch *ds,
enum dsa_tag_protocol proto);
/*
* Method for switch drivers to connect to the tagging protocol driver
* in current use. The switch driver can provide handlers for certain
* types of packets for switch management.
*/
int (*connect_tag_protocol)(struct dsa_switch *ds,
enum dsa_tag_protocol proto);
int (*port_change_conduit)(struct dsa_switch *ds, int port,
struct net_device *conduit,
struct netlink_ext_ack *extack);
/* Optional switch-wide initialization and destruction methods */
int (*setup)(struct dsa_switch *ds);
void (*teardown)(struct dsa_switch *ds);
/* Per-port initialization and destruction methods. Mandatory if the
* driver registers devlink port regions, optional otherwise.
*/
int (*port_setup)(struct dsa_switch *ds, int port);
void (*port_teardown)(struct dsa_switch *ds, int port);
u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
/*
* Access to the switch's PHY registers.
*/
int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
int (*phy_write)(struct dsa_switch *ds, int port,
int regnum, u16 val);
/*
* PHYLINK integration
*/
void (*phylink_get_caps)(struct dsa_switch *ds, int port,
struct phylink_config *config);
void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
struct phylink_link_state *state);
/*
* Port statistics counters.
*/
void (*get_strings)(struct dsa_switch *ds, int port,
u32 stringset, uint8_t *data);
void (*get_ethtool_stats)(struct dsa_switch *ds,
int port, uint64_t *data);
int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
int port, uint64_t *data);
void (*get_eth_phy_stats)(struct dsa_switch *ds, int port,
struct ethtool_eth_phy_stats *phy_stats);
void (*get_eth_mac_stats)(struct dsa_switch *ds, int port,
struct ethtool_eth_mac_stats *mac_stats);
void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port,
struct ethtool_eth_ctrl_stats *ctrl_stats);
void (*get_rmon_stats)(struct dsa_switch *ds, int port,
struct ethtool_rmon_stats *rmon_stats,
const struct ethtool_rmon_hist_range **ranges);
void (*get_ts_stats)(struct dsa_switch *ds, int port,
struct ethtool_ts_stats *ts_stats);
void (*get_stats64)(struct dsa_switch *ds, int port,
struct rtnl_link_stats64 *s);
void (*get_pause_stats)(struct dsa_switch *ds, int port,
struct ethtool_pause_stats *pause_stats);
void (*self_test)(struct dsa_switch *ds, int port,
struct ethtool_test *etest, u64 *data);
/*
* ethtool Wake-on-LAN
*/
void (*get_wol)(struct dsa_switch *ds, int port,
struct ethtool_wolinfo *w);
int (*set_wol)(struct dsa_switch *ds, int port,
struct ethtool_wolinfo *w);
/*
* ethtool timestamp info
*/
int (*get_ts_info)(struct dsa_switch *ds, int port,
struct kernel_ethtool_ts_info *ts);
/*
* ethtool MAC merge layer
*/
int (*get_mm)(struct dsa_switch *ds, int port,
struct ethtool_mm_state *state);
int (*set_mm)(struct dsa_switch *ds, int port,
struct ethtool_mm_cfg *cfg,
struct netlink_ext_ack *extack);
void (*get_mm_stats)(struct dsa_switch *ds, int port,
struct ethtool_mm_stats *stats);
/*
* DCB ops
*/
int (*port_get_default_prio)(struct dsa_switch *ds, int port);
int (*port_set_default_prio)(struct dsa_switch *ds, int port,
u8 prio);
int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp);
int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
u8 prio);
int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
u8 prio);
int (*port_set_apptrust)(struct dsa_switch *ds, int port,
const u8 *sel, int nsel);
int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel,
int *nsel);
/*
* Suspend and resume
*/
int (*suspend)(struct dsa_switch *ds);
int (*resume)(struct dsa_switch *ds);
/*
* Port enable/disable
*/
int (*port_enable)(struct dsa_switch *ds, int port,
struct phy_device *phy);
void (*port_disable)(struct dsa_switch *ds, int port);
/*
* Notification for MAC address changes on user ports. Drivers can
* currently only veto operations. They should not use the method to