1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips |
4 | * Copyright (c) 2008-2009 Marvell Semiconductor |
5 | */ |
6 | |
7 | #ifndef __LINUX_NET_DSA_H |
8 | #define __LINUX_NET_DSA_H |
9 | |
10 | #include <linux/if.h> |
11 | #include <linux/if_ether.h> |
12 | #include <linux/list.h> |
13 | #include <linux/notifier.h> |
14 | #include <linux/timer.h> |
15 | #include <linux/workqueue.h> |
16 | #include <linux/of.h> |
17 | #include <linux/ethtool.h> |
18 | #include <linux/net_tstamp.h> |
19 | #include <linux/phy.h> |
20 | #include <linux/platform_data/dsa.h> |
21 | #include <linux/phylink.h> |
22 | #include <net/devlink.h> |
23 | #include <net/switchdev.h> |
24 | |
25 | struct tc_action; |
26 | struct phy_device; |
27 | struct fixed_phy_status; |
28 | struct phylink_link_state; |
29 | |
30 | #define DSA_TAG_PROTO_NONE_VALUE 0 |
31 | #define DSA_TAG_PROTO_BRCM_VALUE 1 |
32 | #define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2 |
33 | #define DSA_TAG_PROTO_DSA_VALUE 3 |
34 | #define DSA_TAG_PROTO_EDSA_VALUE 4 |
35 | #define DSA_TAG_PROTO_GSWIP_VALUE 5 |
36 | #define DSA_TAG_PROTO_KSZ9477_VALUE 6 |
37 | #define DSA_TAG_PROTO_KSZ9893_VALUE 7 |
38 | #define DSA_TAG_PROTO_LAN9303_VALUE 8 |
39 | #define DSA_TAG_PROTO_MTK_VALUE 9 |
40 | #define DSA_TAG_PROTO_QCA_VALUE 10 |
41 | #define DSA_TAG_PROTO_TRAILER_VALUE 11 |
42 | #define DSA_TAG_PROTO_8021Q_VALUE 12 |
43 | #define DSA_TAG_PROTO_SJA1105_VALUE 13 |
44 | #define DSA_TAG_PROTO_KSZ8795_VALUE 14 |
45 | #define DSA_TAG_PROTO_OCELOT_VALUE 15 |
46 | #define DSA_TAG_PROTO_AR9331_VALUE 16 |
47 | #define DSA_TAG_PROTO_RTL4_A_VALUE 17 |
48 | #define DSA_TAG_PROTO_HELLCREEK_VALUE 18 |
49 | #define DSA_TAG_PROTO_XRS700X_VALUE 19 |
50 | #define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20 |
51 | #define DSA_TAG_PROTO_SEVILLE_VALUE 21 |
52 | #define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 |
53 | #define DSA_TAG_PROTO_SJA1110_VALUE 23 |
54 | #define DSA_TAG_PROTO_RTL8_4_VALUE 24 |
55 | #define DSA_TAG_PROTO_RTL8_4T_VALUE 25 |
56 | #define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26 |
57 | #define DSA_TAG_PROTO_LAN937X_VALUE 27 |
58 | |
59 | enum dsa_tag_protocol { |
60 | DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, |
61 | DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, |
62 | DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, |
63 | DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, |
64 | DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, |
65 | DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, |
66 | DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, |
67 | DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, |
68 | DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, |
69 | DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, |
70 | DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, |
71 | DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, |
72 | DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, |
73 | DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, |
74 | DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, |
75 | DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, |
76 | DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, |
77 | DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, |
78 | DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, |
79 | DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, |
80 | DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, |
81 | DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, |
82 | DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, |
83 | DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, |
84 | DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, |
85 | DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, |
86 | DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, |
87 | DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, |
88 | }; |
89 | |
90 | struct dsa_switch; |
91 | |
92 | struct dsa_device_ops { |
93 | struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); |
94 | struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); |
95 | void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, |
96 | int *offset); |
97 | int (*connect)(struct dsa_switch *ds); |
98 | void (*disconnect)(struct dsa_switch *ds); |
99 | unsigned int needed_headroom; |
100 | unsigned int needed_tailroom; |
101 | const char *name; |
102 | enum dsa_tag_protocol proto; |
103 | /* Some tagging protocols either mangle or shift the destination MAC |
104 | * address, in which case the DSA master would drop packets on ingress |
105 | * if what it understands out of the destination MAC address is not in |
106 | * its RX filter. |
107 | */ |
108 | bool promisc_on_master; |
109 | }; |
110 | |
111 | /* This structure defines the control interfaces that are overlayed by the |
112 | * DSA layer on top of the DSA CPU/management net_device instance. This is |
113 | * used by the core net_device layer while calling various net_device_ops |
114 | * function pointers. |
115 | */ |
116 | struct dsa_netdevice_ops { |
117 | int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, |
118 | int cmd); |
119 | }; |
120 | |
121 | #define DSA_TAG_DRIVER_ALIAS "dsa_tag-" |
122 | #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \ |
123 | MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE)) |
124 | |
125 | struct dsa_lag { |
126 | struct net_device *dev; |
127 | unsigned int id; |
128 | struct mutex fdb_lock; |
129 | struct list_head fdbs; |
130 | refcount_t refcount; |
131 | }; |
132 | |
133 | struct dsa_switch_tree { |
134 | struct list_head list; |
135 | |
136 | /* List of switch ports */ |
137 | struct list_head ports; |
138 | |
139 | /* Notifier chain for switch-wide events */ |
140 | struct raw_notifier_head nh; |
141 | |
142 | /* Tree identifier */ |
143 | unsigned int index; |
144 | |
145 | /* Number of switches attached to this tree */ |
146 | struct kref refcount; |
147 | |
148 | /* Maps offloaded LAG netdevs to a zero-based linear ID for |
149 | * drivers that need it. |
150 | */ |
151 | struct dsa_lag **lags; |
152 | |
153 | /* Tagging protocol operations */ |
154 | const struct dsa_device_ops *tag_ops; |
155 | |
156 | /* Default tagging protocol preferred by the switches in this |
157 | * tree. |
158 | */ |
159 | enum dsa_tag_protocol default_proto; |
160 | |
161 | /* Has this tree been applied to the hardware? */ |
162 | bool setup; |
163 | |
164 | /* |
165 | * Configuration data for the platform device that owns |
166 | * this dsa switch tree instance. |
167 | */ |
168 | struct dsa_platform_data *pd; |
169 | |
170 | /* List of DSA links composing the routing table */ |
171 | struct list_head rtable; |
172 | |
173 | /* Length of "lags" array */ |
174 | unsigned int lags_len; |
175 | |
176 | /* Track the largest switch index within a tree */ |
177 | unsigned int last_switch; |
178 | }; |
179 | |
180 | /* LAG IDs are one-based, the dst->lags array is zero-based */ |
181 | #define dsa_lags_foreach_id(_id, _dst) \ |
182 | for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ |
183 | if ((_dst)->lags[(_id) - 1]) |
184 | |
185 | #define dsa_lag_foreach_port(_dp, _dst, _lag) \ |
186 | list_for_each_entry((_dp), &(_dst)->ports, list) \ |
187 | if (dsa_port_offloads_lag((_dp), (_lag))) |
188 | |
189 | #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ |
190 | list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ |
191 | if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) |
192 | |
193 | static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, |
194 | unsigned int id) |
195 | { |
196 | /* DSA LAG IDs are one-based, dst->lags is zero-based */ |
197 | return dst->lags[id - 1]; |
198 | } |
199 | |
200 | static inline int dsa_lag_id(struct dsa_switch_tree *dst, |
201 | struct net_device *lag_dev) |
202 | { |
203 | unsigned int id; |
204 | |
205 | dsa_lags_foreach_id(id, dst) { |
206 | struct dsa_lag *lag = dsa_lag_by_id(dst, id); |
207 | |
208 | if (lag->dev == lag_dev) |
209 | return lag->id; |
210 | } |
211 | |
212 | return -ENODEV; |
213 | } |
214 | |
215 | /* TC matchall action types */ |
216 | enum dsa_port_mall_action_type { |
217 | DSA_PORT_MALL_MIRROR, |
218 | DSA_PORT_MALL_POLICER, |
219 | }; |
220 | |
221 | /* TC mirroring entry */ |
222 | struct dsa_mall_mirror_tc_entry { |
223 | u8 to_local_port; |
224 | bool ingress; |
225 | }; |
226 | |
227 | /* TC port policer entry */ |
228 | struct dsa_mall_policer_tc_entry { |
229 | u32 burst; |
230 | u64 rate_bytes_per_sec; |
231 | }; |
232 | |
233 | /* TC matchall entry */ |
234 | struct dsa_mall_tc_entry { |
235 | struct list_head list; |
236 | unsigned long cookie; |
237 | enum dsa_port_mall_action_type type; |
238 | union { |
239 | struct dsa_mall_mirror_tc_entry mirror; |
240 | struct dsa_mall_policer_tc_entry policer; |
241 | }; |
242 | }; |
243 | |
244 | struct dsa_bridge { |
245 | struct net_device *dev; |
246 | unsigned int num; |
247 | bool tx_fwd_offload; |
248 | refcount_t refcount; |
249 | }; |
250 | |
251 | struct dsa_port { |
252 | /* A CPU port is physically connected to a master device. |
253 | * A user port exposed to userspace has a slave device. |
254 | */ |
255 | union { |
256 | struct net_device *master; |
257 | struct net_device *slave; |
258 | }; |
259 | |
260 | /* Copy of the tagging protocol operations, for quicker access |
261 | * in the data path. Valid only for the CPU ports. |
262 | */ |
263 | const struct dsa_device_ops *tag_ops; |
264 | |
265 | /* Copies for faster access in master receive hot path */ |
266 | struct dsa_switch_tree *dst; |
267 | struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); |
268 | |
269 | struct dsa_switch *ds; |
270 | |
271 | unsigned int index; |
272 | |
273 | enum { |
274 | DSA_PORT_TYPE_UNUSED = 0, |
275 | DSA_PORT_TYPE_CPU, |
276 | DSA_PORT_TYPE_DSA, |
277 | DSA_PORT_TYPE_USER, |
278 | } type; |
279 | |
280 | const char *name; |
281 | struct dsa_port *cpu_dp; |
282 | u8 mac[ETH_ALEN]; |
283 | |
284 | u8 stp_state; |
285 | |
286 | /* Warning: the following bit fields are not atomic, and updating them |
287 | * can only be done from code paths where concurrency is not possible |
288 | * (probe time or under rtnl_lock). |
289 | */ |
290 | u8 vlan_filtering:1; |
291 | |
292 | /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ |
293 | u8 learning:1; |
294 | |
295 | u8 lag_tx_enabled:1; |
296 | |
297 | u8 devlink_port_setup:1; |
298 | |
299 | /* Master state bits, valid only on CPU ports */ |
300 | u8 master_admin_up:1; |
301 | u8 master_oper_up:1; |
302 | |
303 | u8 setup:1; |
304 | |
305 | struct device_node *dn; |
306 | unsigned int ageing_time; |
307 | |
308 | struct dsa_bridge *bridge; |
309 | struct devlink_port devlink_port; |
310 | struct phylink *pl; |
311 | struct phylink_config pl_config; |
312 | struct dsa_lag *lag; |
313 | struct net_device *hsr_dev; |
314 | |
315 | struct list_head list; |
316 | |
317 | /* |
318 | * Original copy of the master netdev ethtool_ops |
319 | */ |
320 | const struct ethtool_ops *orig_ethtool_ops; |
321 | |
322 | /* |
323 | * Original copy of the master netdev net_device_ops |
324 | */ |
325 | const struct dsa_netdevice_ops *netdev_ops; |
326 | |
327 | /* List of MAC addresses that must be forwarded on this port. |
328 | * These are only valid on CPU ports and DSA links. |
329 | */ |
330 | struct mutex addr_lists_lock; |
331 | struct list_head fdbs; |
332 | struct list_head mdbs; |
333 | |
334 | /* List of VLANs that CPU and DSA ports are members of. */ |
335 | struct mutex vlans_lock; |
336 | struct list_head vlans; |
337 | }; |
338 | |
339 | /* TODO: ideally DSA ports would have a single dp->link_dp member, |
340 | * and no dst->rtable nor this struct dsa_link would be needed, |
341 | * but this would require some more complex tree walking, |
342 | * so keep it stupid at the moment and list them all. |
343 | */ |
344 | struct dsa_link { |
345 | struct dsa_port *dp; |
346 | struct dsa_port *link_dp; |
347 | struct list_head list; |
348 | }; |
349 | |
350 | enum dsa_db_type { |
351 | DSA_DB_PORT, |
352 | DSA_DB_LAG, |
353 | DSA_DB_BRIDGE, |
354 | }; |
355 | |
356 | struct dsa_db { |
357 | enum dsa_db_type type; |
358 | |
359 | union { |
360 | const struct dsa_port *dp; |
361 | struct dsa_lag lag; |
362 | struct dsa_bridge bridge; |
363 | }; |
364 | }; |
365 | |
366 | struct dsa_mac_addr { |
367 | unsigned char addr[ETH_ALEN]; |
368 | u16 vid; |
369 | refcount_t refcount; |
370 | struct list_head list; |
371 | struct dsa_db db; |
372 | }; |
373 | |
374 | struct dsa_vlan { |
375 | u16 vid; |
376 | refcount_t refcount; |
377 | struct list_head list; |
378 | }; |
379 | |
380 | struct dsa_switch { |
381 | struct device *dev; |
382 | |
383 | /* |
384 | * Parent switch tree, and switch index. |
385 | */ |
386 | struct dsa_switch_tree *dst; |
387 | unsigned int index; |
388 | |
389 | /* Warning: the following bit fields are not atomic, and updating them |
390 | * can only be done from code paths where concurrency is not possible |
391 | * (probe time or under rtnl_lock). |
392 | */ |
393 | u32 setup:1; |
394 | |
395 | /* Disallow bridge core from requesting different VLAN awareness |
396 | * settings on ports if not hardware-supported |
397 | */ |
398 | u32 vlan_filtering_is_global:1; |
399 | |
400 | /* Keep VLAN filtering enabled on ports not offloading any upper */ |
401 | u32 needs_standalone_vlan_filtering:1; |
402 | |
403 | /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges |
404 | * that have vlan_filtering=0. All drivers should ideally set this (and |
405 | * then the option would get removed), but it is unknown whether this |
406 | * would break things or not. |
407 | */ |
408 | u32 configure_vlan_while_not_filtering:1; |
409 | |
410 | /* If the switch driver always programs the CPU port as egress tagged |
411 | * despite the VLAN configuration indicating otherwise, then setting |
412 | * @untag_bridge_pvid will force the DSA receive path to pop the |
413 | * bridge's default_pvid VLAN tagged frames to offer a consistent |
414 | * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge |
415 | * device. |
416 | */ |
417 | u32 untag_bridge_pvid:1; |
418 | |
419 | /* Let DSA manage the FDB entries towards the |
420 | * CPU, based on the software bridge database. |
421 | */ |
422 | u32 assisted_learning_on_cpu_port:1; |
423 | |
424 | /* In case vlan_filtering_is_global is set, the VLAN awareness state |
425 | * should be retrieved from here and not from the per-port settings. |
426 | */ |
427 | u32 vlan_filtering:1; |
428 | |
429 | /* For switches that only have the MRU configurable. To ensure the |
430 | * configured MTU is not exceeded, normalization of MRU on all bridged |
431 | * interfaces is needed. |
432 | */ |
433 | u32 mtu_enforcement_ingress:1; |
434 | |
435 | /* Drivers that isolate the FDBs of multiple bridges must set this |
436 | * to true to receive the bridge as an argument in .port_fdb_{add,del} |
437 | * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be |
438 | * passed as zero. |
439 | */ |
440 | u32 fdb_isolation:1; |
441 | |
442 | /* Listener for switch fabric events */ |
443 | struct notifier_block nb; |
444 | |
445 | /* |
446 | * Give the switch driver somewhere to hang its private data |
447 | * structure. |
448 | */ |
449 | void *priv; |
450 | |
451 | void *tagger_data; |
452 | |
453 | /* |
454 | * Configuration data for this switch. |
455 | */ |
456 | struct dsa_chip_data *cd; |
457 | |
458 | /* |
459 | * The switch operations. |
460 | */ |
461 | const struct dsa_switch_ops *ops; |
462 | |
463 | /* |
464 | * Slave mii_bus and devices for the individual ports. |
465 | */ |
466 | u32 phys_mii_mask; |
467 | struct mii_bus *slave_mii_bus; |
468 | |
469 | /* Ageing Time limits in msecs */ |
470 | unsigned int ageing_time_min; |
471 | unsigned int ageing_time_max; |
472 | |
473 | /* Storage for drivers using tag_8021q */ |
474 | struct dsa_8021q_context *tag_8021q_ctx; |
475 | |
476 | /* devlink used to represent this switch device */ |
477 | struct devlink *devlink; |
478 | |
479 | /* Number of switch port queues */ |
480 | unsigned int num_tx_queues; |
481 | |
482 | /* Drivers that benefit from having an ID associated with each |
483 | * offloaded LAG should set this to the maximum number of |
484 | * supported IDs. DSA will then maintain a mapping of _at |
485 | * least_ these many IDs, accessible to drivers via |
486 | * dsa_lag_id(). |
487 | */ |
488 | unsigned int num_lag_ids; |
489 | |
490 | /* Drivers that support bridge forwarding offload or FDB isolation |
491 | * should set this to the maximum number of bridges spanning the same |
492 | * switch tree (or all trees, in the case of cross-tree bridging |
493 | * support) that can be offloaded. |
494 | */ |
495 | unsigned int max_num_bridges; |
496 | |
497 | unsigned int num_ports; |
498 | }; |
499 | |
500 | static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) |
501 | { |
502 | struct dsa_switch_tree *dst = ds->dst; |
503 | struct dsa_port *dp; |
504 | |
505 | list_for_each_entry(dp, &dst->ports, list) |
506 | if (dp->ds == ds && dp->index == p) |
507 | return dp; |
508 | |
509 | return NULL; |
510 | } |
511 | |
512 | static inline bool dsa_port_is_dsa(struct dsa_port *port) |
513 | { |
514 | return port->type == DSA_PORT_TYPE_DSA; |
515 | } |
516 | |
517 | static inline bool dsa_port_is_cpu(struct dsa_port *port) |
518 | { |
519 | return port->type == DSA_PORT_TYPE_CPU; |
520 | } |
521 | |
522 | static inline bool dsa_port_is_user(struct dsa_port *dp) |
523 | { |
524 | return dp->type == DSA_PORT_TYPE_USER; |
525 | } |
526 | |
527 | static inline bool dsa_port_is_unused(struct dsa_port *dp) |
528 | { |
529 | return dp->type == DSA_PORT_TYPE_UNUSED; |
530 | } |
531 | |
532 | static inline bool dsa_port_master_is_operational(struct dsa_port *dp) |
533 | { |
534 | return dsa_port_is_cpu(dp) && dp->master_admin_up && |
535 | dp->master_oper_up; |
536 | } |
537 | |
538 | static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) |
539 | { |
540 | return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; |
541 | } |
542 | |
543 | static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) |
544 | { |
545 | return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; |
546 | } |
547 | |
548 | static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) |
549 | { |
550 | return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; |
551 | } |
552 | |
553 | static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) |
554 | { |
555 | return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; |
556 | } |
557 | |
558 | #define dsa_tree_for_each_user_port(_dp, _dst) \ |
559 | list_for_each_entry((_dp), &(_dst)->ports, list) \ |
560 | if (dsa_port_is_user((_dp))) |
561 | |
562 | #define dsa_switch_for_each_port(_dp, _ds) \ |
563 | list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ |
564 | if ((_dp)->ds == (_ds)) |
565 | |
566 | #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ |
567 | list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ |
568 | if ((_dp)->ds == (_ds)) |
569 | |
570 | #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ |
571 | list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ |
572 | if ((_dp)->ds == (_ds)) |
573 | |
574 | #define dsa_switch_for_each_available_port(_dp, _ds) \ |
575 | dsa_switch_for_each_port((_dp), (_ds)) \ |
576 | if (!dsa_port_is_unused((_dp))) |
577 | |
578 | #define dsa_switch_for_each_user_port(_dp, _ds) \ |
579 | dsa_switch_for_each_port((_dp), (_ds)) \ |
580 | if (dsa_port_is_user((_dp))) |
581 | |
582 | #define dsa_switch_for_each_cpu_port(_dp, _ds) \ |
583 | dsa_switch_for_each_port((_dp), (_ds)) \ |
584 | if (dsa_port_is_cpu((_dp))) |
585 | |
586 | #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ |
587 | dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ |
588 | if (dsa_port_is_cpu((_dp))) |
589 | |
590 | static inline u32 dsa_user_ports(struct dsa_switch *ds) |
591 | { |
592 | struct dsa_port *dp; |
593 | u32 mask = 0; |
594 | |
595 | dsa_switch_for_each_user_port(dp, ds) |
596 | mask |= BIT(dp->index); |
597 | |
598 | return mask; |
599 | } |
600 | |
601 | static inline u32 dsa_cpu_ports(struct dsa_switch *ds) |
602 | { |
603 | struct dsa_port *cpu_dp; |
604 | u32 mask = 0; |
605 | |
606 | dsa_switch_for_each_cpu_port(cpu_dp, ds) |
607 | mask |= BIT(cpu_dp->index); |
608 | |
609 | return mask; |
610 | } |
611 | |
612 | /* Return the local port used to reach an arbitrary switch device */ |
613 | static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) |
614 | { |
615 | struct dsa_switch_tree *dst = ds->dst; |
616 | struct dsa_link *dl; |
617 | |
618 | list_for_each_entry(dl, &dst->rtable, list) |
619 | if (dl->dp->ds == ds && dl->link_dp->ds->index == device) |
620 | return dl->dp->index; |
621 | |
622 | return ds->num_ports; |
623 | } |
624 | |
625 | /* Return the local port used to reach an arbitrary switch port */ |
626 | static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, |
627 | int port) |
628 | { |
629 | if (device == ds->index) |
630 | return port; |
631 | else |
632 | return dsa_routing_port(ds, device); |
633 | } |
634 | |
635 | /* Return the local port used to reach the dedicated CPU port */ |
636 | static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) |
637 | { |
638 | const struct dsa_port *dp = dsa_to_port(ds, port); |
639 | const struct dsa_port *cpu_dp = dp->cpu_dp; |
640 | |
641 | if (!cpu_dp) |
642 | return port; |
643 | |
644 | return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); |
645 | } |
646 | |
647 | /* Return true if this is the local port used to reach the CPU port */ |
648 | static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) |
649 | { |
650 | if (dsa_is_unused_port(ds, port)) |
651 | return false; |
652 | |
653 | return port == dsa_upstream_port(ds, port); |
654 | } |
655 | |
656 | /* Return true if this is a DSA port leading away from the CPU */ |
657 | static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) |
658 | { |
659 | return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); |
660 | } |
661 | |
662 | /* Return the local port used to reach the CPU port */ |
663 | static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) |
664 | { |
665 | struct dsa_port *dp; |
666 | |
667 | dsa_switch_for_each_available_port(dp, ds) { |
668 | return dsa_upstream_port(ds, dp->index); |
669 | } |
670 | |
671 | return ds->num_ports; |
672 | } |
673 | |
674 | /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning |
675 | * that the routing port from @downstream_ds to @upstream_ds is also the port |
676 | * which @downstream_ds uses to reach its dedicated CPU. |
677 | */ |
678 | static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, |
679 | struct dsa_switch *downstream_ds) |
680 | { |
681 | int routing_port; |
682 | |
683 | if (upstream_ds == downstream_ds) |
684 | return true; |
685 | |
686 | routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); |
687 | |
688 | return dsa_is_upstream_port(downstream_ds, routing_port); |
689 | } |
690 | |
691 | static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) |
692 | { |
693 | const struct dsa_switch *ds = dp->ds; |
694 | |
695 | if (ds->vlan_filtering_is_global) |
696 | return ds->vlan_filtering; |
697 | else |
698 | return dp->vlan_filtering; |
699 | } |
700 | |
701 | static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) |
702 | { |
703 | return dp->lag ? dp->lag->id : 0; |
704 | } |
705 | |
706 | static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) |
707 | { |
708 | return dp->lag ? dp->lag->dev : NULL; |
709 | } |
710 | |
711 | static inline bool dsa_port_offloads_lag(struct dsa_port *dp, |
712 | const struct dsa_lag *lag) |
713 | { |
714 | return dsa_port_lag_dev_get(dp) == lag->dev; |
715 | } |
716 | |
717 | static inline |
718 | struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) |
719 | { |
720 | if (!dp->bridge) |
721 | return NULL; |
722 | |
723 | if (dp->lag) |
724 | return dp->lag->dev; |
725 | else if (dp->hsr_dev) |
726 | return dp->hsr_dev; |
727 | |
728 | return dp->slave; |
729 | } |
730 | |
731 | static inline struct net_device * |
732 | dsa_port_bridge_dev_get(const struct dsa_port *dp) |
733 | { |
734 | return dp->bridge ? dp->bridge->dev : NULL; |
735 | } |
736 | |
737 | static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) |
738 | { |
739 | return dp->bridge ? dp->bridge->num : 0; |
740 | } |
741 | |
742 | static inline bool dsa_port_bridge_same(const struct dsa_port *a, |
743 | const struct dsa_port *b) |
744 | { |
745 | struct net_device *br_a = dsa_port_bridge_dev_get(a); |
746 | struct net_device *br_b = dsa_port_bridge_dev_get(b); |
747 | |
748 | /* Standalone ports are not in the same bridge with one another */ |
749 | return (!br_a || !br_b) ? false : (br_a == br_b); |
750 | } |
751 | |
752 | static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, |
753 | const struct net_device *dev) |
754 | { |
755 | return dsa_port_to_bridge_port(dp) == dev; |
756 | } |
757 | |
758 | static inline bool |
759 | dsa_port_offloads_bridge_dev(struct dsa_port *dp, |
760 | const struct net_device *bridge_dev) |
761 | { |
762 | /* DSA ports connected to a bridge, and event was emitted |
763 | * for the bridge. |
764 | */ |
765 | return dsa_port_bridge_dev_get(dp) == bridge_dev; |
766 | } |
767 | |
768 | static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, |
769 | const struct dsa_bridge *bridge) |
770 | { |
771 | return dsa_port_bridge_dev_get(dp) == bridge->dev; |
772 | } |
773 | |
774 | /* Returns true if any port of this tree offloads the given net_device */ |
775 | static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, |
776 | const struct net_device *dev) |
777 | { |
778 | struct dsa_port *dp; |
779 | |
780 | list_for_each_entry(dp, &dst->ports, list) |
781 | if (dsa_port_offloads_bridge_port(dp, dev)) |
782 | return true; |
783 | |
784 | return false; |
785 | } |
786 | |
787 | /* Returns true if any port of this tree offloads the given bridge */ |
788 | static inline bool |
789 | dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, |
790 | const struct net_device *bridge_dev) |
791 | { |
792 | struct dsa_port *dp; |
793 | |
794 | list_for_each_entry(dp, &dst->ports, list) |
795 | if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) |
796 | return true; |
797 | |
798 | return false; |
799 | } |
800 | |
801 | typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, |
802 | bool is_static, void *data); |
803 | struct dsa_switch_ops { |
804 | /* |
805 | * Tagging protocol helpers called for the CPU ports and DSA links. |
806 | * @get_tag_protocol retrieves the initial tagging protocol and is |
807 | * mandatory. Switches which can operate using multiple tagging |
808 | * protocols should implement @change_tag_protocol and report in |
809 | * @get_tag_protocol the tagger in current use. |
810 | */ |
811 | enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, |
812 | int port, |
813 | enum dsa_tag_protocol mprot); |
814 | int (*change_tag_protocol)(struct dsa_switch *ds, |
815 | enum dsa_tag_protocol proto); |
816 | /* |
817 | * Method for switch drivers to connect to the tagging protocol driver |
818 | * in current use. The switch driver can provide handlers for certain |
819 | * types of packets for switch management. |
820 | */ |
821 | int (*connect_tag_protocol)(struct dsa_switch *ds, |
822 | enum dsa_tag_protocol proto); |
823 | |
824 | /* Optional switch-wide initialization and destruction methods */ |
825 | int (*setup)(struct dsa_switch *ds); |
826 | void (*teardown)(struct dsa_switch *ds); |
827 | |
828 | /* Per-port initialization and destruction methods. Mandatory if the |
829 | * driver registers devlink port regions, optional otherwise. |
830 | */ |
831 | int (*port_setup)(struct dsa_switch *ds, int port); |
832 | void (*port_teardown)(struct dsa_switch *ds, int port); |
833 | |
834 | u32 (*get_phy_flags)(struct dsa_switch *ds, int port); |
835 | |
836 | /* |
837 | * Access to the switch's PHY registers. |
838 | */ |
839 | int (*phy_read)(struct dsa_switch *ds, int port, int regnum); |
840 | int (*phy_write)(struct dsa_switch *ds, int port, |
841 | int regnum, u16 val); |
842 | |
843 | /* |
844 | * Link state adjustment (called from libphy) |
845 | */ |
846 | void (*adjust_link)(struct dsa_switch *ds, int port, |
847 | struct phy_device *phydev); |
848 | void (*fixed_link_update)(struct dsa_switch *ds, int port, |
849 | struct fixed_phy_status *st); |
850 | |
851 | /* |
852 | * PHYLINK integration |
853 | */ |
854 | void (*phylink_get_caps)(struct dsa_switch *ds, int port, |
855 | struct phylink_config *config); |
856 | void (*phylink_validate)(struct dsa_switch *ds, int port, |
857 | unsigned long *supported, |
858 | struct phylink_link_state *state); |
859 | struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds, |
860 | int port, |
861 | phy_interface_t iface); |
862 | int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, |
863 | struct phylink_link_state *state); |
864 | void (*phylink_mac_config)(struct dsa_switch *ds, int port, |
865 | unsigned int mode, |
866 | const struct phylink_link_state *state); |
867 | void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); |
868 | void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, |
869 | unsigned int mode, |
870 | phy_interface_t interface); |
871 | void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, |
872 | unsigned int mode, |
873 | phy_interface_t interface, |
874 | struct phy_device *phydev, |
875 | int speed, int duplex, |
876 | bool tx_pause, bool rx_pause); |
877 | void (*phylink_fixed_state)(struct dsa_switch *ds, int port, |
878 | struct phylink_link_state *state); |
879 | /* |
880 | * Port statistics counters. |
881 | */ |
882 | void (*get_strings)(struct dsa_switch *ds, int port, |
883 | u32 stringset, uint8_t *data); |
884 | void (*get_ethtool_stats)(struct dsa_switch *ds, |
885 | int port, uint64_t *data); |
886 | int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); |
887 | void (*get_ethtool_phy_stats)(struct dsa_switch *ds, |
888 | int port, uint64_t *data); |
889 | void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, |
890 | struct ethtool_eth_phy_stats *phy_stats); |
891 | void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, |
892 | struct ethtool_eth_mac_stats *mac_stats); |
893 | void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, |
894 | struct ethtool_eth_ctrl_stats *ctrl_stats); |
895 | void (*get_rmon_stats)(struct dsa_switch *ds, int port, |
896 | struct ethtool_rmon_stats *rmon_stats, |
897 | const struct ethtool_rmon_hist_range **ranges); |
898 | void (*get_stats64)(struct dsa_switch *ds, int port, |
899 | struct rtnl_link_stats64 *s); |
900 | void (*get_pause_stats)(struct dsa_switch *ds, int port, |
901 | struct ethtool_pause_stats *pause_stats); |
902 | void (*self_test)(struct dsa_switch *ds, int port, |
903 | struct ethtool_test *etest, u64 *data); |
904 | |
905 | /* |
906 | * ethtool Wake-on-LAN |
907 | */ |
908 | void (*get_wol)(struct dsa_switch *ds, int port, |
909 | struct ethtool_wolinfo *w); |
910 | int (*set_wol)(struct dsa_switch *ds, int port, |
911 | struct ethtool_wolinfo *w); |
912 | |
913 | /* |
914 | * ethtool timestamp info |
915 | */ |
916 | int (*get_ts_info)(struct dsa_switch *ds, int port, |
917 | struct ethtool_ts_info *ts); |
918 | |
919 | /* |
920 | * DCB ops |
921 | */ |
922 | int (*port_get_default_prio)(struct dsa_switch *ds, int port); |
923 | int (*port_set_default_prio)(struct dsa_switch *ds, int port, |
924 | u8 prio); |
925 | int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); |
926 | int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, |
927 | u8 prio); |
928 | int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, |
929 | u8 prio); |
930 | |
931 | /* |
932 | * Suspend and resume |
933 | */ |
934 | int (*suspend)(struct dsa_switch *ds); |
935 | int (*resume)(struct dsa_switch *ds); |
936 | |
937 | /* |
938 | * Port enable/disable |
939 | */ |
940 | int (*port_enable)(struct dsa_switch *ds, int port, |
941 | struct phy_device *phy); |
942 | void (*port_disable)(struct dsa_switch *ds, int port); |
943 | |
944 | /* |
945 | * Port's MAC EEE settings |
946 | */ |
947 | int (*set_mac_eee)(struct dsa_switch *ds, int port, |
948 | struct ethtool_eee *e); |
949 | int (*get_mac_eee)(struct dsa_switch *ds, int port, |
950 | struct ethtool_eee *e); |
951 | |
952 | /* EEPROM access */ |
953 | int (*get_eeprom_len)(struct dsa_switch *ds); |
954 | int (*get_eeprom)(struct dsa_switch *ds, |
955 | struct ethtool_eeprom *eeprom, u8 *data); |
956 | int (*set_eeprom)(struct dsa_switch *ds, |
957 | struct ethtool_eeprom *eeprom, u8 *data); |
958 | |
959 | /* |
960 | * Register access. |
961 | */ |
962 | int (*get_regs_len)(struct dsa_switch *ds, int port); |
963 | void (*get_regs)(struct dsa_switch *ds, int port, |
964 | struct ethtool_regs *regs, void *p); |
965 | |
966 | /* |
967 | * Upper device tracking. |
968 | */ |
969 | int (*port_prechangeupper)(struct dsa_switch *ds, int port, |
970 | struct netdev_notifier_changeupper_info *info); |
971 | |
972 | /* |
973 | * Bridge integration |
974 | */ |
975 | int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); |
976 | int (*port_bridge_join)(struct dsa_switch *ds, int port, |
977 | struct dsa_bridge bridge, |
978 | bool *tx_fwd_offload, |
979 | struct netlink_ext_ack *extack); |
980 | void (*port_bridge_leave)(struct dsa_switch *ds, int port, |
981 | struct dsa_bridge bridge); |
982 | void (*port_stp_state_set)(struct dsa_switch *ds, int port, |
983 | u8 state); |
984 | int (*port_mst_state_set)(struct dsa_switch *ds, int port, |
985 | const struct switchdev_mst_state *state); |
986 | void (*port_fast_age)(struct dsa_switch *ds, int port); |
987 | int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); |
988 | int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, |
989 | struct switchdev_brport_flags flags, |
990 | struct netlink_ext_ack *extack); |
991 | int (*port_bridge_flags)(struct dsa_switch *ds, int port, |
992 | struct switchdev_brport_flags flags, |
993 | struct netlink_ext_ack *extack); |
994 | void (*port_set_host_flood)(struct dsa_switch *ds, int port, |
995 | bool uc, bool mc); |
996 | |
997 | /* |
998 | * VLAN support |
999 | */ |
1000 | int (*port_vlan_filtering)(struct dsa_switch *ds, int port, |
1001 | bool vlan_filtering, |
1002 | struct netlink_ext_ack *extack); |
1003 | int (*port_vlan_add)(struct dsa_switch *ds, int port, |
1004 | const struct switchdev_obj_port_vlan *vlan, |
1005 | struct netlink_ext_ack *extack); |
1006 | int (*port_vlan_del)(struct dsa_switch *ds, int port, |
1007 | const struct switchdev_obj_port_vlan *vlan); |
1008 | int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, |
1009 | const struct switchdev_vlan_msti *msti); |
1010 | |
1011 | /* |
1012 | * Forwarding database |
1013 | */ |
1014 | int (*port_fdb_add)(struct dsa_switch *ds, int port, |
1015 | const unsigned char *addr, u16 vid, |
1016 | struct dsa_db db); |
1017 | int (*port_fdb_del)(struct dsa_switch *ds, int port, |
1018 | const unsigned char *addr, u16 vid, |
1019 | struct dsa_db db); |
1020 | int (*port_fdb_dump)(struct dsa_switch *ds, int port, |
1021 | dsa_fdb_dump_cb_t *cb, void *data); |
1022 | int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, |
1023 | const unsigned char *addr, u16 vid, |
1024 | struct dsa_db db); |
1025 | int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, |
1026 | const unsigned char *addr, u16 vid, |
1027 | struct dsa_db db); |
1028 | |
1029 | /* |
1030 | * Multicast database |
1031 | */ |
1032 | int (*port_mdb_add)(struct dsa_switch *ds, int port, |
1033 | const struct switchdev_obj_port_mdb *mdb, |
1034 | struct dsa_db db); |
1035 | int (*port_mdb_del)(struct dsa_switch *ds, int port, |
1036 | const struct switchdev_obj_port_mdb *mdb, |
1037 | struct dsa_db db); |
1038 | /* |
1039 | * RXNFC |
1040 | */ |
1041 | int (*get_rxnfc)(struct dsa_switch *ds, int port, |
1042 | struct ethtool_rxnfc *nfc, u32 *rule_locs); |
1043 | int (*set_rxnfc)(struct dsa_switch *ds, int port, |
1044 | struct ethtool_rxnfc *nfc); |
1045 | |
1046 | /* |
1047 | * TC integration |
1048 | */ |
1049 | int (*cls_flower_add)(struct dsa_switch *ds, int port, |
1050 | struct flow_cls_offload *cls, bool ingress); |
1051 | int (*cls_flower_del)(struct dsa_switch *ds, int port, |
1052 | struct flow_cls_offload *cls, bool ingress); |
1053 | int (*cls_flower_stats)(struct dsa_switch *ds, int port, |
1054 | struct flow_cls_offload *cls, bool ingress); |
1055 | int (*port_mirror_add)(struct dsa_switch *ds, int port, |
1056 | struct dsa_mall_mirror_tc_entry *mirror, |
1057 | bool ingress, struct netlink_ext_ack *extack); |
1058 | void (*port_mirror_del)(struct dsa_switch *ds, int port, |
1059 | struct dsa_mall_mirror_tc_entry *mirror); |
1060 | int (*port_policer_add)(struct dsa_switch *ds, int port, |
1061 | struct dsa_mall_policer_tc_entry *policer); |
1062 | void (*port_policer_del)(struct dsa_switch *ds, int port); |
1063 | int (*port_setup_tc)(struct dsa_switch *ds, int port, |
1064 | enum tc_setup_type type, void *type_data); |
1065 | |
1066 | /* |
1067 | * Cross-chip operations |
1068 | */ |
1069 | int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, |
1070 | int sw_index, int port, |
1071 | struct dsa_bridge bridge, |
1072 | struct netlink_ext_ack *extack); |
1073 | void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, |
1074 | int sw_index, int port, |
1075 | struct dsa_bridge bridge); |
1076 | int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, |
1077 | int port); |
1078 | int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, |
1079 | int port, struct dsa_lag lag, |
1080 | struct netdev_lag_upper_info *info); |
1081 | int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, |
1082 | int port, struct dsa_lag lag); |
1083 | |
1084 | /* |
1085 | * PTP functionality |
1086 | */ |
1087 | int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, |
1088 | struct ifreq *ifr); |
1089 | int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, |
1090 | struct ifreq *ifr); |
1091 | void (*port_txtstamp)(struct dsa_switch *ds, int port, |
1092 | struct sk_buff *skb); |
1093 | bool (*port_rxtstamp)(struct dsa_switch *ds, int port, |
1094 | struct sk_buff *skb, unsigned int type); |
1095 | |
1096 | /* Devlink parameters, etc */ |
1097 | int (*devlink_param_get)(struct dsa_switch *ds, u32 id, |
1098 | struct devlink_param_gset_ctx *ctx); |
1099 | int (*devlink_param_set)(struct dsa_switch *ds, u32 id, |
1100 | struct devlink_param_gset_ctx *ctx); |
1101 | int (*devlink_info_get)(struct dsa_switch *ds, |
1102 | struct devlink_info_req *req, |
1103 | struct netlink_ext_ack *extack); |
1104 | int (*devlink_sb_pool_get)(struct dsa_switch *ds, |
1105 | unsigned int sb_index, u16 pool_index, |
1106 | struct devlink_sb_pool_info *pool_info); |
1107 | int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, |
1108 | u16 pool_index, u32 size, |
1109 | enum devlink_sb_threshold_type threshold_type, |
1110 | struct netlink_ext_ack *extack); |
1111 | int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, |
1112 | unsigned int sb_index, u16 pool_index, |
1113 | u32 *p_threshold); |
1114 | int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, |
1115 | unsigned int sb_index, u16 pool_index, |
1116 | u32 threshold, |
1117 | struct netlink_ext_ack *extack); |
1118 | int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, |
1119 | unsigned int sb_index, u16 tc_index, |
1120 | enum devlink_sb_pool_type pool_type, |
1121 | u16 *p_pool_index, u32 *p_threshold); |
1122 | int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, |
1123 | unsigned int sb_index, u16 tc_index, |
1124 | enum devlink_sb_pool_type pool_type, |
1125 | u16 pool_index, u32 threshold, |
1126 | struct netlink_ext_ack *extack); |
1127 | int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, |
1128 | unsigned int sb_index); |
1129 | int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, |
1130 | unsigned int sb_index); |
1131 | int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, |
1132 | unsigned int sb_index, u16 pool_index, |
1133 | u32 *p_cur, u32 *p_max); |
1134 | int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, |
1135 | unsigned int sb_index, u16 tc_index, |
1136 | enum devlink_sb_pool_type pool_type, |
1137 | u32 *p_cur, u32 *p_max); |
1138 | |
1139 | /* |
1140 | * MTU change functionality. Switches can also adjust their MRU through |
1141 | * this method. By MTU, one understands the SDU (L2 payload) length. |
1142 | * If the switch needs to account for the DSA tag on the CPU port, this |
1143 | * method needs to do so privately. |
1144 | */ |
1145 | int (*port_change_mtu)(struct dsa_switch *ds, int port, |
1146 | int new_mtu); |
1147 | int (*port_max_mtu)(struct dsa_switch *ds, int port); |
1148 | |
1149 | /* |
1150 | * LAG integration |
1151 | */ |
1152 | int (*port_lag_change)(struct dsa_switch *ds, int port); |
1153 | int (*port_lag_join)(struct dsa_switch *ds, int port, |
1154 | struct dsa_lag lag, |
1155 | struct netdev_lag_upper_info *info); |
1156 | int (*port_lag_leave)(struct dsa_switch *ds, int port, |
1157 | struct dsa_lag lag); |
1158 | |
1159 | /* |
1160 | * HSR integration |
1161 | */ |
1162 | int (*port_hsr_join)(struct dsa_switch *ds, int port, |
1163 | struct net_device *hsr); |
1164 | int (*port_hsr_leave)(struct dsa_switch *ds, int port, |
1165 | struct net_device *hsr); |
1166 | |
1167 | /* |
1168 | * MRP integration |
1169 | */ |
1170 | int (*port_mrp_add)(struct dsa_switch *ds, int port, |
1171 | const struct switchdev_obj_mrp *mrp); |
1172 | int (*port_mrp_del)(struct dsa_switch *ds, int port, |
1173 | const struct switchdev_obj_mrp *mrp); |
1174 | int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, |
1175 | const struct switchdev_obj_ring_role_mrp *mrp); |
1176 | int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, |
1177 | const struct switchdev_obj_ring_role_mrp *mrp); |
1178 | |
1179 | /* |
1180 | * tag_8021q operations |
1181 | */ |
1182 | int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, |
1183 | u16 flags); |
1184 | int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); |
1185 | |
1186 | /* |
1187 | * DSA master tracking operations |
1188 | */ |
1189 | void (*master_state_change)(struct dsa_switch *ds, |
1190 | const struct net_device *master, |
1191 | bool operational); |
1192 | }; |
1193 | |
1194 | #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ |
1195 | DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ |
1196 | dsa_devlink_param_get, dsa_devlink_param_set, NULL) |
1197 | |
1198 | int dsa_devlink_param_get(struct devlink *dl, u32 id, |
1199 | struct devlink_param_gset_ctx *ctx); |
1200 | int dsa_devlink_param_set(struct devlink *dl, u32 id, |
1201 | struct devlink_param_gset_ctx *ctx); |
1202 | int dsa_devlink_params_register(struct dsa_switch *ds, |
1203 | const struct devlink_param *params, |
1204 | size_t params_count); |
1205 | void dsa_devlink_params_unregister(struct dsa_switch *ds, |
1206 | const struct devlink_param *params, |
1207 | size_t params_count); |
1208 | int dsa_devlink_resource_register(struct dsa_switch *ds, |
1209 | const char *resource_name, |
1210 | u64 resource_size, |
1211 | u64 resource_id, |
1212 | u64 parent_resource_id, |
1213 | const struct devlink_resource_size_params *size_params); |
1214 | |
1215 | void dsa_devlink_resources_unregister(struct dsa_switch *ds); |
1216 | |
1217 | void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, |
1218 | u64 resource_id, |
1219 | devlink_resource_occ_get_t *occ_get, |
1220 | void *occ_get_priv); |
1221 | void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, |
1222 | u64 resource_id); |
1223 | struct devlink_region * |
1224 | dsa_devlink_region_create(struct dsa_switch *ds, |
1225 | const struct devlink_region_ops *ops, |
1226 | u32 region_max_snapshots, u64 region_size); |
1227 | struct devlink_region * |
1228 | dsa_devlink_port_region_create(struct dsa_switch *ds, |
1229 | int port, |
1230 | const struct devlink_port_region_ops *ops, |
1231 | u32 region_max_snapshots, u64 region_size); |
1232 | void dsa_devlink_region_destroy(struct devlink_region *region); |
1233 | |
1234 | struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); |
1235 | |
1236 | struct dsa_devlink_priv { |
1237 | struct dsa_switch *ds; |
1238 | }; |
1239 | |
1240 | static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) |
1241 | { |
1242 | struct dsa_devlink_priv *dl_priv = devlink_priv(dl); |
1243 | |
1244 | return dl_priv->ds; |
1245 | } |
1246 | |
1247 | static inline |
1248 | struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) |
1249 | { |
1250 | struct devlink *dl = port->devlink; |
1251 | struct dsa_devlink_priv *dl_priv = devlink_priv(dl); |
1252 | |
1253 | return dl_priv->ds; |
1254 | } |
1255 | |
1256 | static inline int dsa_devlink_port_to_port(struct devlink_port *port) |
1257 | { |
1258 | return port->index; |
1259 | } |
1260 | |
1261 | struct dsa_switch_driver { |
1262 | struct list_head list; |
1263 | const struct dsa_switch_ops *ops; |
1264 | }; |
1265 | |
1266 | struct net_device *dsa_dev_to_net_device(struct device *dev); |
1267 | |
1268 | bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, |
1269 | const unsigned char *addr, u16 vid, |
1270 | struct dsa_db db); |
1271 | bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, |
1272 | const struct switchdev_obj_port_mdb *mdb, |
1273 | struct dsa_db db); |
1274 | |
1275 | /* Keep inline for faster access in hot path */ |
1276 | static inline bool netdev_uses_dsa(const struct net_device *dev) |
1277 | { |
1278 | #if IS_ENABLED(CONFIG_NET_DSA) |
1279 | return dev->dsa_ptr && dev->dsa_ptr->rcv; |
1280 | #endif |
1281 | return false; |
1282 | } |
1283 | |
1284 | /* All DSA tags that push the EtherType to the right (basically all except tail |
1285 | * tags, which don't break dissection) can be treated the same from the |
1286 | * perspective of the flow dissector. |
1287 | * |
1288 | * We need to return: |
1289 | * - offset: the (B - A) difference between: |
1290 | * A. the position of the real EtherType and |
1291 | * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes |
1292 | * after the normal EtherType was supposed to be) |
1293 | * The offset in bytes is exactly equal to the tagger overhead (and half of |
1294 | * that, in __be16 shorts). |
1295 | * |
1296 | * - proto: the value of the real EtherType. |
1297 | */ |
1298 | static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, |
1299 | __be16 *proto, int *offset) |
1300 | { |
1301 | #if IS_ENABLED(CONFIG_NET_DSA) |
1302 | const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; |
1303 | int tag_len = ops->needed_headroom; |
1304 | |
1305 | *offset = tag_len; |
1306 | *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; |
1307 | #endif |
1308 | } |
1309 | |
1310 | #if IS_ENABLED(CONFIG_NET_DSA) |
1311 | static inline int __dsa_netdevice_ops_check(struct net_device *dev) |
1312 | { |
1313 | int err = -EOPNOTSUPP; |
1314 | |
1315 | if (!dev->dsa_ptr) |
1316 | return err; |
1317 | |
1318 | if (!dev->dsa_ptr->netdev_ops) |
1319 | return err; |
1320 | |
1321 | return 0; |
1322 | } |
1323 | |
1324 | static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr, |
1325 | int cmd) |
1326 | { |
1327 | const struct dsa_netdevice_ops *ops; |
1328 | int err; |
1329 | |
1330 | err = __dsa_netdevice_ops_check(dev); |
1331 | if (err) |
1332 | return err; |
1333 | |
1334 | ops = dev->dsa_ptr->netdev_ops; |
1335 | |
1336 | return ops->ndo_eth_ioctl(dev, ifr, cmd); |
1337 | } |
1338 | #else |
1339 | static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr, |
1340 | int cmd) |
1341 | { |
1342 | return -EOPNOTSUPP; |
1343 | } |
1344 | #endif |
1345 | |
1346 | void dsa_unregister_switch(struct dsa_switch *ds); |
1347 | int dsa_register_switch(struct dsa_switch *ds); |
1348 | void dsa_switch_shutdown(struct dsa_switch *ds); |
1349 | struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); |
1350 | void dsa_flush_workqueue(void); |
1351 | #ifdef CONFIG_PM_SLEEP |
1352 | int dsa_switch_suspend(struct dsa_switch *ds); |
1353 | int dsa_switch_resume(struct dsa_switch *ds); |
1354 | #else |
1355 | static inline int dsa_switch_suspend(struct dsa_switch *ds) |
1356 | { |
1357 | return 0; |
1358 | } |
1359 | static inline int dsa_switch_resume(struct dsa_switch *ds) |
1360 | { |
1361 | return 0; |
1362 | } |
1363 | #endif /* CONFIG_PM_SLEEP */ |
1364 | |
1365 | #if IS_ENABLED(CONFIG_NET_DSA) |
1366 | bool dsa_slave_dev_check(const struct net_device *dev); |
1367 | #else |
1368 | static inline bool dsa_slave_dev_check(const struct net_device *dev) |
1369 | { |
1370 | return false; |
1371 | } |
1372 | #endif |
1373 | |
1374 | netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); |
1375 | void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); |
1376 | |
1377 | struct dsa_tag_driver { |
1378 | const struct dsa_device_ops *ops; |
1379 | struct list_head list; |
1380 | struct module *owner; |
1381 | }; |
1382 | |
1383 | void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], |
1384 | unsigned int count, |
1385 | struct module *owner); |
1386 | void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], |
1387 | unsigned int count); |
1388 | |
1389 | #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ |
1390 | static int __init dsa_tag_driver_module_init(void) \ |
1391 | { \ |
1392 | dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ |
1393 | THIS_MODULE); \ |
1394 | return 0; \ |
1395 | } \ |
1396 | module_init(dsa_tag_driver_module_init); \ |
1397 | \ |
1398 | static void __exit dsa_tag_driver_module_exit(void) \ |
1399 | { \ |
1400 | dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \ |
1401 | } \ |
1402 | module_exit(dsa_tag_driver_module_exit) |
1403 | |
1404 | /** |
1405 | * module_dsa_tag_drivers() - Helper macro for registering DSA tag |
1406 | * drivers |
1407 | * @__ops_array: Array of tag driver structures |
1408 | * |
1409 | * Helper macro for DSA tag drivers which do not do anything special |
1410 | * in module init/exit. Each module may only use this macro once, and |
1411 | * calling it replaces module_init() and module_exit(). |
1412 | */ |
1413 | #define module_dsa_tag_drivers(__ops_array) \ |
1414 | dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array)) |
1415 | |
1416 | #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops |
1417 | |
1418 | /* Create a static structure we can build a linked list of dsa_tag |
1419 | * drivers |
1420 | */ |
1421 | #define DSA_TAG_DRIVER(__ops) \ |
1422 | static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \ |
1423 | .ops = &__ops, \ |
1424 | } |
1425 | |
1426 | /** |
1427 | * module_dsa_tag_driver() - Helper macro for registering a single DSA tag |
1428 | * driver |
1429 | * @__ops: Single tag driver structures |
1430 | * |
1431 | * Helper macro for DSA tag drivers which do not do anything special |
1432 | * in module init/exit. Each module may only use this macro once, and |
1433 | * calling it replaces module_init() and module_exit(). |
1434 | */ |
1435 | #define module_dsa_tag_driver(__ops) \ |
1436 | DSA_TAG_DRIVER(__ops); \ |
1437 | \ |
1438 | static struct dsa_tag_driver *dsa_tag_driver_array[] = { \ |
1439 | &DSA_TAG_DRIVER_NAME(__ops) \ |
1440 | }; \ |
1441 | module_dsa_tag_drivers(dsa_tag_driver_array) |
1442 | #endif |
1443 | |
1444 | |