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11#ifndef __LINUX_NET_DSA_H
12#define __LINUX_NET_DSA_H
13
14#include <linux/if.h>
15#include <linux/if_ether.h>
16#include <linux/list.h>
17#include <linux/notifier.h>
18#include <linux/timer.h>
19#include <linux/workqueue.h>
20#include <linux/of.h>
21#include <linux/ethtool.h>
22#include <linux/net_tstamp.h>
23#include <linux/phy.h>
24#include <net/devlink.h>
25#include <net/switchdev.h>
26
27struct tc_action;
28struct phy_device;
29struct fixed_phy_status;
30struct phylink_link_state;
31
32enum dsa_tag_protocol {
33 DSA_TAG_PROTO_NONE = 0,
34 DSA_TAG_PROTO_BRCM,
35 DSA_TAG_PROTO_BRCM_PREPEND,
36 DSA_TAG_PROTO_DSA,
37 DSA_TAG_PROTO_EDSA,
38 DSA_TAG_PROTO_KSZ,
39 DSA_TAG_PROTO_LAN9303,
40 DSA_TAG_PROTO_MTK,
41 DSA_TAG_PROTO_QCA,
42 DSA_TAG_PROTO_TRAILER,
43 DSA_TAG_LAST,
44};
45
46#define DSA_MAX_SWITCHES 4
47#define DSA_MAX_PORTS 12
48
49#define DSA_RTABLE_NONE -1
50
51struct dsa_chip_data {
52
53
54
55 struct device *host_dev;
56 int sw_addr;
57
58
59
60
61 struct device *netdev[DSA_MAX_PORTS];
62
63
64 int eeprom_len;
65
66
67
68
69
70 struct device_node *of_node;
71
72
73
74
75
76
77
78
79 char *port_names[DSA_MAX_PORTS];
80 struct device_node *port_dn[DSA_MAX_PORTS];
81
82
83
84
85
86
87 s8 rtable[DSA_MAX_SWITCHES];
88};
89
90struct dsa_platform_data {
91
92
93
94
95 struct device *netdev;
96 struct net_device *of_netdev;
97
98
99
100
101
102 int nr_chips;
103 struct dsa_chip_data *chip;
104};
105
106struct packet_type;
107struct dsa_switch;
108
109struct dsa_device_ops {
110 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
111 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
112 struct packet_type *pt);
113 int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
114 int *offset);
115};
116
117struct dsa_switch_tree {
118 struct list_head list;
119
120
121 struct raw_notifier_head nh;
122
123
124 unsigned int index;
125
126
127 struct kref refcount;
128
129
130 bool setup;
131
132
133
134
135
136 struct dsa_platform_data *pd;
137
138
139
140
141 struct dsa_port *cpu_dp;
142
143
144
145
146 struct dsa_switch *ds[DSA_MAX_SWITCHES];
147};
148
149
150enum dsa_port_mall_action_type {
151 DSA_PORT_MALL_MIRROR,
152};
153
154
155struct dsa_mall_mirror_tc_entry {
156 u8 to_local_port;
157 bool ingress;
158};
159
160
161struct dsa_mall_tc_entry {
162 struct list_head list;
163 unsigned long cookie;
164 enum dsa_port_mall_action_type type;
165 union {
166 struct dsa_mall_mirror_tc_entry mirror;
167 };
168};
169
170
171struct dsa_port {
172
173
174
175 union {
176 struct net_device *master;
177 struct net_device *slave;
178 };
179
180
181 const struct dsa_device_ops *tag_ops;
182
183
184 struct dsa_switch_tree *dst;
185 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
186 struct packet_type *pt);
187
188 enum {
189 DSA_PORT_TYPE_UNUSED = 0,
190 DSA_PORT_TYPE_CPU,
191 DSA_PORT_TYPE_DSA,
192 DSA_PORT_TYPE_USER,
193 } type;
194
195 struct dsa_switch *ds;
196 unsigned int index;
197 const char *name;
198 const struct dsa_port *cpu_dp;
199 struct device_node *dn;
200 unsigned int ageing_time;
201 u8 stp_state;
202 struct net_device *bridge_dev;
203 struct devlink_port devlink_port;
204 struct phylink *pl;
205
206
207
208 const struct ethtool_ops *orig_ethtool_ops;
209};
210
211struct dsa_switch {
212 struct device *dev;
213
214
215
216
217 struct dsa_switch_tree *dst;
218 unsigned int index;
219
220
221 struct notifier_block nb;
222
223
224
225
226
227 void *priv;
228
229
230
231
232 struct dsa_chip_data *cd;
233
234
235
236
237 const struct dsa_switch_ops *ops;
238
239
240
241
242
243
244 s8 rtable[DSA_MAX_SWITCHES];
245
246
247
248
249 u32 phys_mii_mask;
250 struct mii_bus *slave_mii_bus;
251
252
253 unsigned int ageing_time_min;
254 unsigned int ageing_time_max;
255
256
257 struct devlink *devlink;
258
259
260 unsigned int num_tx_queues;
261
262
263 size_t num_ports;
264 struct dsa_port ports[];
265};
266
267static inline const struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
268{
269 return &ds->ports[p];
270}
271
272static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
273{
274 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
275}
276
277static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
278{
279 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
280}
281
282static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
283{
284 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
285}
286
287static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
288{
289 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
290}
291
292static inline u32 dsa_user_ports(struct dsa_switch *ds)
293{
294 u32 mask = 0;
295 int p;
296
297 for (p = 0; p < ds->num_ports; p++)
298 if (dsa_is_user_port(ds, p))
299 mask |= BIT(p);
300
301 return mask;
302}
303
304
305static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
306 int port)
307{
308 if (device == ds->index)
309 return port;
310 else
311 return ds->rtable[device];
312}
313
314
315static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
316{
317 const struct dsa_port *dp = dsa_to_port(ds, port);
318 const struct dsa_port *cpu_dp = dp->cpu_dp;
319
320 if (!cpu_dp)
321 return port;
322
323 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
324}
325
326typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
327 bool is_static, void *data);
328struct dsa_switch_ops {
329#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
330
331
332
333 const char *(*probe)(struct device *dsa_dev,
334 struct device *host_dev, int sw_addr,
335 void **priv);
336#endif
337
338 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
339 int port);
340
341 int (*setup)(struct dsa_switch *ds);
342 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
343
344
345
346
347 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
348 int (*phy_write)(struct dsa_switch *ds, int port,
349 int regnum, u16 val);
350
351
352
353
354 void (*adjust_link)(struct dsa_switch *ds, int port,
355 struct phy_device *phydev);
356 void (*fixed_link_update)(struct dsa_switch *ds, int port,
357 struct fixed_phy_status *st);
358
359
360
361
362 void (*phylink_validate)(struct dsa_switch *ds, int port,
363 unsigned long *supported,
364 struct phylink_link_state *state);
365 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port,
366 struct phylink_link_state *state);
367 void (*phylink_mac_config)(struct dsa_switch *ds, int port,
368 unsigned int mode,
369 const struct phylink_link_state *state);
370 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port);
371 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port,
372 unsigned int mode,
373 phy_interface_t interface);
374 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port,
375 unsigned int mode,
376 phy_interface_t interface,
377 struct phy_device *phydev);
378 void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
379 struct phylink_link_state *state);
380
381
382
383 void (*get_strings)(struct dsa_switch *ds, int port,
384 u32 stringset, uint8_t *data);
385 void (*get_ethtool_stats)(struct dsa_switch *ds,
386 int port, uint64_t *data);
387 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
388 void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
389 int port, uint64_t *data);
390
391
392
393
394 void (*get_wol)(struct dsa_switch *ds, int port,
395 struct ethtool_wolinfo *w);
396 int (*set_wol)(struct dsa_switch *ds, int port,
397 struct ethtool_wolinfo *w);
398
399
400
401
402 int (*get_ts_info)(struct dsa_switch *ds, int port,
403 struct ethtool_ts_info *ts);
404
405
406
407
408 int (*suspend)(struct dsa_switch *ds);
409 int (*resume)(struct dsa_switch *ds);
410
411
412
413
414 int (*port_enable)(struct dsa_switch *ds, int port,
415 struct phy_device *phy);
416 void (*port_disable)(struct dsa_switch *ds, int port,
417 struct phy_device *phy);
418
419
420
421
422 int (*set_mac_eee)(struct dsa_switch *ds, int port,
423 struct ethtool_eee *e);
424 int (*get_mac_eee)(struct dsa_switch *ds, int port,
425 struct ethtool_eee *e);
426
427
428 int (*get_eeprom_len)(struct dsa_switch *ds);
429 int (*get_eeprom)(struct dsa_switch *ds,
430 struct ethtool_eeprom *eeprom, u8 *data);
431 int (*set_eeprom)(struct dsa_switch *ds,
432 struct ethtool_eeprom *eeprom, u8 *data);
433
434
435
436
437 int (*get_regs_len)(struct dsa_switch *ds, int port);
438 void (*get_regs)(struct dsa_switch *ds, int port,
439 struct ethtool_regs *regs, void *p);
440
441
442
443
444 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
445 int (*port_bridge_join)(struct dsa_switch *ds, int port,
446 struct net_device *bridge);
447 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
448 struct net_device *bridge);
449 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
450 u8 state);
451 void (*port_fast_age)(struct dsa_switch *ds, int port);
452
453
454
455
456 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
457 bool vlan_filtering);
458 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
459 const struct switchdev_obj_port_vlan *vlan);
460 void (*port_vlan_add)(struct dsa_switch *ds, int port,
461 const struct switchdev_obj_port_vlan *vlan);
462 int (*port_vlan_del)(struct dsa_switch *ds, int port,
463 const struct switchdev_obj_port_vlan *vlan);
464
465
466
467 int (*port_fdb_add)(struct dsa_switch *ds, int port,
468 const unsigned char *addr, u16 vid);
469 int (*port_fdb_del)(struct dsa_switch *ds, int port,
470 const unsigned char *addr, u16 vid);
471 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
472 dsa_fdb_dump_cb_t *cb, void *data);
473
474
475
476
477 int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
478 const struct switchdev_obj_port_mdb *mdb);
479 void (*port_mdb_add)(struct dsa_switch *ds, int port,
480 const struct switchdev_obj_port_mdb *mdb);
481 int (*port_mdb_del)(struct dsa_switch *ds, int port,
482 const struct switchdev_obj_port_mdb *mdb);
483
484
485
486 int (*get_rxnfc)(struct dsa_switch *ds, int port,
487 struct ethtool_rxnfc *nfc, u32 *rule_locs);
488 int (*set_rxnfc)(struct dsa_switch *ds, int port,
489 struct ethtool_rxnfc *nfc);
490
491
492
493
494 int (*port_mirror_add)(struct dsa_switch *ds, int port,
495 struct dsa_mall_mirror_tc_entry *mirror,
496 bool ingress);
497 void (*port_mirror_del)(struct dsa_switch *ds, int port,
498 struct dsa_mall_mirror_tc_entry *mirror);
499
500
501
502
503 int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index,
504 int port, struct net_device *br);
505 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index,
506 int port, struct net_device *br);
507
508
509
510
511 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
512 struct ifreq *ifr);
513 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
514 struct ifreq *ifr);
515 bool (*port_txtstamp)(struct dsa_switch *ds, int port,
516 struct sk_buff *clone, unsigned int type);
517 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
518 struct sk_buff *skb, unsigned int type);
519};
520
521struct dsa_switch_driver {
522 struct list_head list;
523 const struct dsa_switch_ops *ops;
524};
525
526#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
527
528void register_switch_driver(struct dsa_switch_driver *type);
529void unregister_switch_driver(struct dsa_switch_driver *type);
530struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
531
532#else
533static inline void register_switch_driver(struct dsa_switch_driver *type) { }
534static inline void unregister_switch_driver(struct dsa_switch_driver *type) { }
535static inline struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
536{
537 return NULL;
538}
539#endif
540struct net_device *dsa_dev_to_net_device(struct device *dev);
541
542
543static inline bool netdev_uses_dsa(struct net_device *dev)
544{
545#if IS_ENABLED(CONFIG_NET_DSA)
546 return dev->dsa_ptr && dev->dsa_ptr->rcv;
547#endif
548 return false;
549}
550
551struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n);
552void dsa_unregister_switch(struct dsa_switch *ds);
553int dsa_register_switch(struct dsa_switch *ds);
554#ifdef CONFIG_PM_SLEEP
555int dsa_switch_suspend(struct dsa_switch *ds);
556int dsa_switch_resume(struct dsa_switch *ds);
557#else
558static inline int dsa_switch_suspend(struct dsa_switch *ds)
559{
560 return 0;
561}
562static inline int dsa_switch_resume(struct dsa_switch *ds)
563{
564 return 0;
565}
566#endif
567
568enum dsa_notifier_type {
569 DSA_PORT_REGISTER,
570 DSA_PORT_UNREGISTER,
571};
572
573struct dsa_notifier_info {
574 struct net_device *dev;
575};
576
577struct dsa_notifier_register_info {
578 struct dsa_notifier_info info;
579 struct net_device *master;
580 unsigned int port_number;
581 unsigned int switch_number;
582};
583
584static inline struct net_device *
585dsa_notifier_info_to_dev(const struct dsa_notifier_info *info)
586{
587 return info->dev;
588}
589
590#if IS_ENABLED(CONFIG_NET_DSA)
591int register_dsa_notifier(struct notifier_block *nb);
592int unregister_dsa_notifier(struct notifier_block *nb);
593int call_dsa_notifiers(unsigned long val, struct net_device *dev,
594 struct dsa_notifier_info *info);
595#else
596static inline int register_dsa_notifier(struct notifier_block *nb)
597{
598 return 0;
599}
600
601static inline int unregister_dsa_notifier(struct notifier_block *nb)
602{
603 return 0;
604}
605
606static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev,
607 struct dsa_notifier_info *info)
608{
609 return NOTIFY_DONE;
610}
611#endif
612
613
614#define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q)
615#define BRCM_TAG_GET_PORT(v) ((v) >> 8)
616#define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff)
617
618
619int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data);
620int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data);
621int dsa_port_get_phy_sset_count(struct dsa_port *dp);
622void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
623
624#endif
625