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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
25struct dsa_8021q_context;
26struct tc_action;
27
28#define DSA_TAG_PROTO_NONE_VALUE 0
29#define DSA_TAG_PROTO_BRCM_VALUE 1
30#define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2
31#define DSA_TAG_PROTO_DSA_VALUE 3
32#define DSA_TAG_PROTO_EDSA_VALUE 4
33#define DSA_TAG_PROTO_GSWIP_VALUE 5
34#define DSA_TAG_PROTO_KSZ9477_VALUE 6
35#define DSA_TAG_PROTO_KSZ9893_VALUE 7
36#define DSA_TAG_PROTO_LAN9303_VALUE 8
37#define DSA_TAG_PROTO_MTK_VALUE 9
38#define DSA_TAG_PROTO_QCA_VALUE 10
39#define DSA_TAG_PROTO_TRAILER_VALUE 11
40#define DSA_TAG_PROTO_8021Q_VALUE 12
41#define DSA_TAG_PROTO_SJA1105_VALUE 13
42#define DSA_TAG_PROTO_KSZ8795_VALUE 14
43#define DSA_TAG_PROTO_OCELOT_VALUE 15
44#define DSA_TAG_PROTO_AR9331_VALUE 16
45#define DSA_TAG_PROTO_RTL4_A_VALUE 17
46#define DSA_TAG_PROTO_HELLCREEK_VALUE 18
47#define DSA_TAG_PROTO_XRS700X_VALUE 19
48#define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20
49#define DSA_TAG_PROTO_SEVILLE_VALUE 21
50#define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22
51#define DSA_TAG_PROTO_SJA1110_VALUE 23
52#define DSA_TAG_PROTO_RTL8_4_VALUE 24
53#define DSA_TAG_PROTO_RTL8_4T_VALUE 25
54#define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26
55#define DSA_TAG_PROTO_LAN937X_VALUE 27
56#define DSA_TAG_PROTO_VSC73XX_8021Q_VALUE 28
57#define DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE 29
58#define DSA_TAG_PROTO_YT921X_VALUE 30
59#define DSA_TAG_PROTO_MXL_GSW1XX_VALUE 31
60#define DSA_TAG_PROTO_MXL862_VALUE 32
61#define DSA_TAG_PROTO_NETC_VALUE 33
62#define DSA_TAG_PROTO_KSZ8463_VALUE 34
63#define DSA_TAG_PROTO_MT7628_VALUE 35
64
65enum dsa_tag_protocol {
66 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
67 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
68 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE,
69 DSA_TAG_PROTO_BRCM_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE,
70 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
71 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
72 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
73 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
74 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
75 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
76 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
77 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
78 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
79 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
80 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
81 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
82 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
83 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE,
84 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE,
85 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE,
86 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE,
87 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE,
88 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE,
89 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE,
90 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE,
91 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE,
92 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE,
93 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE,
94 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE,
95 DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE,
96 DSA_TAG_PROTO_YT921X = DSA_TAG_PROTO_YT921X_VALUE,
97 DSA_TAG_PROTO_MXL_GSW1XX = DSA_TAG_PROTO_MXL_GSW1XX_VALUE,
98 DSA_TAG_PROTO_MXL862 = DSA_TAG_PROTO_MXL862_VALUE,
99 DSA_TAG_PROTO_NETC = DSA_TAG_PROTO_NETC_VALUE,
100 DSA_TAG_PROTO_KSZ8463 = DSA_TAG_PROTO_KSZ8463_VALUE,
101 DSA_TAG_PROTO_MT7628 = DSA_TAG_PROTO_MT7628_VALUE,
102};
103
104struct dsa_switch;
105
106struct dsa_device_ops {
107 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
108 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
109 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
110 int *offset);
111 int (*connect)(struct dsa_switch *ds);
112 void (*disconnect)(struct dsa_switch *ds);
113 unsigned int needed_headroom;
114 unsigned int needed_tailroom;
115 const char *name;
116 enum dsa_tag_protocol proto;
117 /* Some tagging protocols either mangle or shift the destination MAC
118 * address, in which case the DSA conduit would drop packets on ingress
119 * if what it understands out of the destination MAC address is not in
120 * its RX filter.
121 */
122 bool promisc_on_conduit;
123};
124
125struct 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
133struct 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
193static 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
200static 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 */
216enum dsa_port_mall_action_type {
217 DSA_PORT_MALL_MIRROR,
218 DSA_PORT_MALL_POLICER,
219};
220
221/* TC mirroring entry */
222struct dsa_mall_mirror_tc_entry {
223 u8 to_local_port;
224 bool ingress;
225};
226
227/* TC matchall entry */
228struct dsa_mall_tc_entry {
229 struct list_head list;
230 unsigned long cookie;
231 enum dsa_port_mall_action_type type;
232 union {
233 struct dsa_mall_mirror_tc_entry mirror;
234 struct flow_action_police policer;
235 };
236};
237
238struct dsa_bridge {
239 struct net_device *dev;
240 unsigned int num;
241 bool tx_fwd_offload;
242 refcount_t refcount;
243};
244
245struct dsa_port {
246 /* A CPU port is physically connected to a conduit device. A user port
247 * exposes a network device to user-space, called 'user' here.
248 */
249 union {
250 struct net_device *conduit;
251 struct net_device *user;
252 };
253
254 /* Copy of the tagging protocol operations, for quicker access
255 * in the data path. Valid only for the CPU ports.
256 */
257 const struct dsa_device_ops *tag_ops;
258
259 /* Copies for faster access in conduit receive hot path */
260 struct dsa_switch_tree *dst;
261 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
262
263 struct dsa_switch *ds;
264
265 unsigned int index;
266
267 enum {
268 DSA_PORT_TYPE_UNUSED = 0,
269 DSA_PORT_TYPE_CPU,
270 DSA_PORT_TYPE_DSA,
271 DSA_PORT_TYPE_USER,
272 } type;
273
274 const char *name;
275 struct dsa_port *cpu_dp;
276 u8 mac[ETH_ALEN];
277
278 u8 stp_state;
279
280 /* Warning: the following bit fields are not atomic, and updating them
281 * can only be done from code paths where concurrency is not possible
282 * (probe time or under rtnl_lock).
283 */
284 u8 vlan_filtering:1;
285
286 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */
287 u8 learning:1;
288
289 u8 lag_tx_enabled:1;
290
291 /* conduit state bits, valid only on CPU ports */
292 u8 conduit_admin_up:1;
293 u8 conduit_oper_up:1;
294
295 /* Valid only on user ports */
296 u8 cpu_port_in_lag:1;
297
298 u8 setup:1;
299
300 struct device_node *dn;
301 unsigned int ageing_time;
302
303 struct dsa_bridge *bridge;
304 struct devlink_port devlink_port;
305 struct phylink *pl;
306 struct phylink_config pl_config;
307 netdevice_tracker conduit_tracker;
308 struct dsa_lag *lag;
309 struct net_device *hsr_dev;
310
311 struct list_head list;
312
313 /*
314 * Original copy of the conduit netdev ethtool_ops
315 */
316 const struct ethtool_ops *orig_ethtool_ops;
317
318 /* List of MAC addresses that must be forwarded on this port.
319 * These are only valid on CPU ports and DSA links.
320 */
321 struct mutex addr_lists_lock;
322 struct list_head fdbs;
323 struct list_head mdbs;
324
325 struct mutex vlans_lock;
326 union {
327 /* List of VLANs that CPU and DSA ports are members of.
328 * Access to this is serialized by the sleepable @vlans_lock.
329 */
330 struct list_head vlans;
331 /* List of VLANs that user ports are members of.
332 * Access to this is serialized by netif_addr_lock_bh().
333 */
334 struct list_head user_vlans;
335 };
336};
337
338static inline struct dsa_port *
339dsa_phylink_to_port(struct phylink_config *config)
340{
341 return container_of(config, struct dsa_port, pl_config);
342}
343
344/* TODO: ideally DSA ports would have a single dp->link_dp member,
345 * and no dst->rtable nor this struct dsa_link would be needed,
346 * but this would require some more complex tree walking,
347 * so keep it stupid at the moment and list them all.
348 */
349struct dsa_link {
350 struct dsa_port *dp;
351 struct dsa_port *link_dp;
352 struct list_head list;
353};
354
355enum dsa_db_type {
356 DSA_DB_PORT,
357 DSA_DB_LAG,
358 DSA_DB_BRIDGE,
359};
360
361struct dsa_db {
362 enum dsa_db_type type;
363
364 union {
365 const struct dsa_port *dp;
366 struct dsa_lag lag;
367 struct dsa_bridge bridge;
368 };
369};
370
371struct dsa_mac_addr {
372 unsigned char addr[ETH_ALEN];
373 u16 vid;
374 refcount_t refcount;
375 struct list_head list;
376 struct dsa_db db;
377};
378
379struct dsa_vlan {
380 u16 vid;
381 refcount_t refcount;
382 struct list_head list;
383};
384
385struct dsa_switch {
386 struct device *dev;
387
388 /*
389 * Parent switch tree, and switch index.
390 */
391 struct dsa_switch_tree *dst;
392 unsigned int index;
393
394 /* Warning: the following bit fields are not atomic, and updating them
395 * can only be done from code paths where concurrency is not possible
396 * (probe time or under rtnl_lock).
397 */
398 u32 setup:1;
399
400 /* Disallow bridge core from requesting different VLAN awareness
401 * settings on ports if not hardware-supported
402 */
403 u32 vlan_filtering_is_global:1;
404
405 /* Keep VLAN filtering enabled on ports not offloading any upper */
406 u32 needs_standalone_vlan_filtering:1;
407
408 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges
409 * that have vlan_filtering=0. All drivers should ideally set this (and
410 * then the option would get removed), but it is unknown whether this
411 * would break things or not.
412 */
413 u32 configure_vlan_while_not_filtering:1;
414
415 /* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames.
416 * DEPRECATED: Do NOT set this field in new drivers. Instead look at
417 * the dsa_software_vlan_untag() comments.
418 */
419 u32 untag_bridge_pvid:1;
420 /* Pop the default_pvid of VLAN-aware bridge ports from tagged frames.
421 * Useful if the switch cannot preserve the VLAN tag as seen on the
422 * wire for user port ingress, and chooses to send all frames as
423 * VLAN-tagged to the CPU, including those which were originally
424 * untagged.
425 */
426 u32 untag_vlan_aware_bridge_pvid:1;
427
428 /* Let DSA manage the FDB entries towards the
429 * CPU, based on the software bridge database.
430 */
431 u32 assisted_learning_on_cpu_port:1;
432
433 /* In case vlan_filtering_is_global is set, the VLAN awareness state
434 * should be retrieved from here and not from the per-port settings.
435 */
436 u32 vlan_filtering:1;
437
438 /* For switches that only have the MRU configurable. To ensure the
439 * configured MTU is not exceeded, normalization of MRU on all bridged
440 * interfaces is needed.
441 */
442 u32 mtu_enforcement_ingress:1;
443
444 /* Drivers that isolate the FDBs of multiple bridges must set this
445 * to true to receive the bridge as an argument in .port_fdb_{add,del}
446 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be
447 * passed as zero.
448 */
449 u32 fdb_isolation:1;
450
451 /* Drivers that have global DSCP mapping settings must set this to
452 * true to automatically apply the settings to all ports.
453 */
454 u32 dscp_prio_mapping_is_global:1;
455
456 /* Listener for switch fabric events */
457 struct notifier_block nb;
458
459 /*
460 * Give the switch driver somewhere to hang its private data
461 * structure.
462 */
463 void *priv;
464
465 void *tagger_data;
466
467 /*
468 * Configuration data for this switch.
469 */
470 struct dsa_chip_data *cd;
471
472 /*
473 * The switch operations.
474 */
475 const struct dsa_switch_ops *ops;
476
477 /*
478 * Allow a DSA switch driver to override the phylink MAC ops
479 */
480 const struct phylink_mac_ops *phylink_mac_ops;
481
482 /*
483 * User mii_bus and devices for the individual ports.
484 */
485 u32 phys_mii_mask;
486 struct mii_bus *user_mii_bus;
487
488 /* Ageing Time limits in msecs */
489 unsigned int ageing_time_min;
490 unsigned int ageing_time_max;
491
492 /* Storage for drivers using tag_8021q */
493 struct dsa_8021q_context *tag_8021q_ctx;
494
495 /* devlink used to represent this switch device */
496 struct devlink *devlink;
497
498 /* Number of switch port queues */
499 unsigned int num_tx_queues;
500
501 /* Drivers that benefit from having an ID associated with each
502 * offloaded LAG should set this to the maximum number of
503 * supported IDs. DSA will then maintain a mapping of _at
504 * least_ these many IDs, accessible to drivers via
505 * dsa_lag_id().
506 */
507 unsigned int num_lag_ids;
508
509 /* Drivers that support bridge forwarding offload or FDB isolation
510 * should set this to the maximum number of bridges spanning the same
511 * switch tree (or all trees, in the case of cross-tree bridging
512 * support) that can be offloaded.
513 */
514 unsigned int max_num_bridges;
515
516 unsigned int num_ports;
517};
518
519static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
520{
521 struct dsa_switch_tree *dst = ds->dst;
522 struct dsa_port *dp;
523
524 list_for_each_entry(dp, &dst->ports, list)
525 if (dp->ds == ds && dp->index == p)
526 return dp;
527
528 return NULL;
529}
530
531static inline bool dsa_port_is_dsa(struct dsa_port *port)
532{
533 return port->type == DSA_PORT_TYPE_DSA;
534}
535
536static inline bool dsa_port_is_cpu(struct dsa_port *port)
537{
538 return port->type == DSA_PORT_TYPE_CPU;
539}
540
541static inline bool dsa_port_is_user(struct dsa_port *dp)
542{
543 return dp->type == DSA_PORT_TYPE_USER;
544}
545
546static inline bool dsa_port_is_unused(struct dsa_port *dp)
547{
548 return dp->type == DSA_PORT_TYPE_UNUSED;
549}
550
551static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp)
552{
553 return dsa_port_is_cpu(dp) && dp->conduit_admin_up &&
554 dp->conduit_oper_up;
555}
556
557static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
558{
559 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
560}
561
562static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
563{
564 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
565}
566
567static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
568{
569 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
570}
571
572static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
573{
574 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
575}
576
577#define dsa_tree_for_each_user_port(_dp, _dst) \
578 list_for_each_entry((_dp), &(_dst)->ports, list) \
579 if (dsa_port_is_user((_dp)))
580
581#define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \
582 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \
583 if (dsa_port_is_user((_dp)))
584
585#define dsa_tree_for_each_cpu_port(_dp, _dst) \
586 list_for_each_entry((_dp), &(_dst)->ports, list) \
587 if (dsa_port_is_cpu((_dp)))
588
589#define dsa_switch_for_each_port(_dp, _ds) \
590 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
591 if ((_dp)->ds == (_ds))
592
593#define dsa_switch_for_each_port_safe(_dp, _next, _ds) \
594 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \
595 if ((_dp)->ds == (_ds))
596
597#define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \
598 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \
599 if ((_dp)->ds == (_ds))
600
601#define dsa_switch_for_each_available_port(_dp, _ds) \
602 dsa_switch_for_each_port((_dp), (_ds)) \
603 if (!dsa_port_is_unused((_dp)))
604
605#define dsa_switch_for_each_user_port(_dp, _ds) \
606 dsa_switch_for_each_port((_dp), (_ds)) \
607 if (dsa_port_is_user((_dp)))
608
609#define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \
610 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \
611 if (dsa_port_is_user((_dp)))
612
613#define dsa_switch_for_each_cpu_port(_dp, _ds) \
614 dsa_switch_for_each_port((_dp), (_ds)) \
615 if (dsa_port_is_cpu((_dp)))
616
617#define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \
618 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \
619 if (dsa_port_is_cpu((_dp)))
620
621static inline u32 dsa_user_ports(struct dsa_switch *ds)
622{
623 struct dsa_port *dp;
624 u32 mask = 0;
625
626 dsa_switch_for_each_user_port(dp, ds)
627 mask |= BIT(dp->index);
628
629 return mask;
630}
631
632static inline u32 dsa_cpu_ports(struct dsa_switch *ds)
633{
634 struct dsa_port *cpu_dp;
635 u32 mask = 0;
636
637 dsa_switch_for_each_cpu_port(cpu_dp, ds)
638 mask |= BIT(cpu_dp->index);
639
640 return mask;
641}
642
643/* Return the local port used to reach an arbitrary switch device */
644static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device)
645{
646 struct dsa_switch_tree *dst = ds->dst;
647 struct dsa_link *dl;
648
649 list_for_each_entry(dl, &dst->rtable, list)
650 if (dl->dp->ds == ds && dl->link_dp->ds->index == device)
651 return dl->dp->index;
652
653 return ds->num_ports;
654}
655
656/* Return the local port used to reach an arbitrary switch port */
657static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
658 int port)
659{
660 if (device == ds->index)
661 return port;
662 else
663 return dsa_routing_port(ds, device);
664}
665
666/* Return the local port used to reach the dedicated CPU port */
667static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
668{
669 const struct dsa_port *dp = dsa_to_port(ds, port);
670 const struct dsa_port *cpu_dp = dp->cpu_dp;
671
672 if (!cpu_dp)
673 return port;
674
675 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
676}
677
678/* Return true if this is the local port used to reach the CPU port */
679static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
680{
681 if (dsa_is_unused_port(ds, port))
682 return false;
683
684 return port == dsa_upstream_port(ds, port);
685}
686
687/* Return true if this is a DSA port leading away from the CPU */
688static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port)
689{
690 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port);
691}
692
693/* Return the local port used to reach the CPU port */
694static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds)
695{
696 struct dsa_port *dp;
697
698 dsa_switch_for_each_available_port(dp, ds) {
699 return dsa_upstream_port(ds, dp->index);
700 }
701
702 return ds->num_ports;
703}
704
705/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
706 * that the routing port from @downstream_ds to @upstream_ds is also the port
707 * which @downstream_ds uses to reach its dedicated CPU.
708 */
709static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
710 struct dsa_switch *downstream_ds)
711{
712 int routing_port;
713
714 if (upstream_ds == downstream_ds)
715 return true;
716
717 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
718
719 return dsa_is_upstream_port(downstream_ds, routing_port);
720}
721
722static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
723{
724 const struct dsa_switch *ds = dp->ds;
725
726 if (ds->vlan_filtering_is_global)
727 return ds->vlan_filtering;
728 else
729 return dp->vlan_filtering;
730}
731
732static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp)
733{
734 return dp->lag ? dp->lag->id : 0;
735}
736
737static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp)
738{
739 return dp->lag ? dp->lag->dev : NULL;
740}
741
742static inline bool dsa_port_offloads_lag(struct dsa_port *dp,
743 const struct dsa_lag *lag)
744{
745 return dsa_port_lag_dev_get(dp) == lag->dev;
746}
747
748static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp)
749{
750 if (dp->cpu_port_in_lag)
751 return dsa_port_lag_dev_get(dp->cpu_dp);
752
753 return dp->cpu_dp->conduit;
754}
755
756static inline
757struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
758{
759 if (!dp->bridge)
760 return NULL;
761
762 if (dp->lag)
763 return dp->lag->dev;
764 else if (dp->hsr_dev)
765 return dp->hsr_dev;
766
767 return dp->user;
768}
769
770static inline struct net_device *
771dsa_port_bridge_dev_get(const struct dsa_port *dp)
772{
773 return dp->bridge ? dp->bridge->dev : NULL;
774}
775
776static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp)
777{
778 return dp->bridge ? dp->bridge->num : 0;
779}
780
781static inline bool dsa_port_bridge_same(const struct dsa_port *a,
782 const struct dsa_port *b)
783{
784 struct net_device *br_a = dsa_port_bridge_dev_get(a);
785 struct net_device *br_b = dsa_port_bridge_dev_get(b);
786
787 /* Standalone ports are not in the same bridge with one another */
788 return (!br_a || !br_b) ? false : (br_a == br_b);
789}
790
791static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
792 const struct net_device *dev)
793{
794 return dsa_port_to_bridge_port(dp) == dev;
795}
796
797static inline bool
798dsa_port_offloads_bridge_dev(struct dsa_port *dp,
799 const struct net_device *bridge_dev)
800{
801 /* DSA ports connected to a bridge, and event was emitted
802 * for the bridge.
803 */
804 return dsa_port_bridge_dev_get(dp) == bridge_dev;
805}
806
807static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
808 const struct dsa_bridge *bridge)
809{
810 return dsa_port_bridge_dev_get(dp) == bridge->dev;
811}
812
813/* Returns true if any port of this tree offloads the given net_device */
814static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
815 const struct net_device *dev)
816{
817 struct dsa_port *dp;
818
819 list_for_each_entry(dp, &dst->ports, list)
820 if (dsa_port_offloads_bridge_port(dp, dev))
821 return true;
822
823 return false;
824}
825
826/* Returns true if any port of this tree offloads the given bridge */
827static inline bool
828dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst,
829 const struct net_device *bridge_dev)
830{
831 struct dsa_port *dp;
832
833 list_for_each_entry(dp, &dst->ports, list)
834 if (dsa_port_offloads_bridge_dev(dp, bridge_dev))
835 return true;
836
837 return false;
838}
839
840#define dsa_switch_for_each_bridge_member(_dp, _ds, _bdev) \
841 dsa_switch_for_each_user_port(_dp, _ds) \
842 if (dsa_port_offloads_bridge_dev(_dp, _bdev))
843
844static inline u32
845dsa_bridge_ports(struct dsa_switch *ds, const struct net_device *bdev)
846{
847 struct dsa_port *dp;
848 u32 mask = 0;
849
850 dsa_switch_for_each_bridge_member(dp, ds, bdev)
851 mask |= BIT(dp->index);
852
853 return mask;
854}
855
856static inline bool dsa_port_tree_same(const struct dsa_port *a,
857 const struct dsa_port *b)
858{
859 return a->ds->dst == b->ds->dst;
860}
861
862typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
863 bool is_static, void *data);
864struct dsa_switch_ops {
865 /*
866 * Tagging protocol helpers called for the CPU ports and DSA links.
867 * @get_tag_protocol retrieves the initial tagging protocol and is
868 * mandatory. Switches which can operate using multiple tagging
869 * protocols should implement @change_tag_protocol and report in
870 * @get_tag_protocol the tagger in current use.
871 */
872 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
873 int port,
874 enum dsa_tag_protocol mprot);
875 int (*change_tag_protocol)(struct dsa_switch *ds,
876 enum dsa_tag_protocol proto);
877 /*
878 * Method for switch drivers to connect to the tagging protocol driver
879 * in current use. The switch driver can provide handlers for certain
880 * types of packets for switch management.
881 */
882 int (*connect_tag_protocol)(struct dsa_switch *ds,
883 enum dsa_tag_protocol proto);
884
885 int (*port_change_conduit)(struct dsa_switch *ds, int port,
886 struct net_device *conduit,
887 struct netlink_ext_ack *extack);
888
889 /* Optional switch-wide initialization and destruction methods */
890 int (*setup)(struct dsa_switch *ds);
891 void (*teardown)(struct dsa_switch *ds);
892
893 /* Per-port initialization and destruction methods. Mandatory if the
894 * driver registers devlink port regions, optional otherwise.
895 */
896 int (*port_setup)(struct dsa_switch *ds, int port);
897 void (*port_teardown)(struct dsa_switch *ds, int port);
898
899 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
900
901 /*
902 * Access to the switch's PHY registers.
903 */
904 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
905 int (*phy_write)(struct dsa_switch *ds, int port,
906 int regnum, u16 val);
907
908 /*
909 * PHYLINK integration
910 */
911 void (*phylink_get_caps)(struct dsa_switch *ds, int port,
912 struct phylink_config *config);
913 void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
914 struct phylink_link_state *state);
915 /*
916 * Port statistics counters.
917 */
918 void (*get_strings)(struct dsa_switch *ds, int port,
919 u32 stringset, uint8_t *data);
920 void (*get_ethtool_stats)(struct dsa_switch *ds,
921 int port, uint64_t *data);
922 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
923 void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
924 int port, uint64_t *data);
925 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port,
926 struct ethtool_eth_phy_stats *phy_stats);
927 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port,
928 struct ethtool_eth_mac_stats *mac_stats);
929 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port,
930 struct ethtool_eth_ctrl_stats *ctrl_stats);
931 void (*get_rmon_stats)(struct dsa_switch *ds, int port,
932 struct ethtool_rmon_stats *rmon_stats,
933 const struct ethtool_rmon_hist_range **ranges);
934 void (*get_ts_stats)(struct dsa_switch *ds, int port,
935 struct ethtool_ts_stats *ts_stats);
936 void (*get_stats64)(struct dsa_switch *ds, int port,
937 struct rtnl_link_stats64 *s);
938 void (*get_pause_stats)(struct dsa_switch *ds, int port,
939 struct ethtool_pause_stats *pause_stats);
940 void (*self_test)(struct dsa_switch *ds, int port,
941 struct ethtool_test *etest, u64 *data);
942
943 /*
944 * ethtool Wake-on-LAN
945 */
946 void (*get_wol)(struct dsa_switch *ds, int port,
947 struct ethtool_wolinfo *w);
948 int (*set_wol)(struct dsa_switch *ds, int port,
949 struct ethtool_wolinfo *w);
950
951 /*
952 * ethtool timestamp info
953 */
954 int (*get_ts_info)(struct dsa_switch *ds, int port,
955 struct kernel_ethtool_ts_info *ts);
956
957 /*
958 * ethtool MAC merge layer
959 */
960 int (*get_mm)(struct dsa_switch *ds, int port,
961 struct ethtool_mm_state *state);
962 int (*set_mm)(struct dsa_switch *ds, int port,
963 struct ethtool_mm_cfg *cfg,
964 struct netlink_ext_ack *extack);
965 void (*get_mm_stats)(struct dsa_switch *ds, int port,
966 struct ethtool_mm_stats *stats);
967
968 /*
969 * DCB ops
970 */
971 int (*port_get_default_prio)(struct dsa_switch *ds, int port);
972 int (*port_set_default_prio)(struct dsa_switch *ds, int port,
973 u8 prio);
974 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp);
975 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
976 u8 prio);
977 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
978 u8 prio);
979 int (*port_set_apptrust)(struct dsa_switch *ds, int port,
980 const u8 *sel, int nsel);
981 int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel,
982 int *nsel);
983
984 /*
985 * Suspend and resume
986 */
987 int (*suspend)(struct dsa_switch *ds);
988 int (*resume)(struct dsa_switch *ds);
989
990 /*
991 * Port enable/disable
992 */
993 int (*port_enable)(struct dsa_switch *ds, int port,
994 struct phy_device *phy);
995 void (*port_disable)(struct dsa_switch *ds, int port);
996
997
998 /*
999 * Notification for MAC address changes on user ports. Drivers can
1000 * currently only veto operations. They should not use the method to
1001 * program the hardware, since the operation is not rolled back in case
1002 * of other errors.
1003 */
1004 int (*port_set_mac_address)(struct dsa_switch *ds, int port,
1005 const unsigned char *addr);
1006
1007 /*
1008 * Compatibility between device trees defining multiple CPU ports and
1009 * drivers which are not OK to use by default the numerically smallest
1010 * CPU port of a switch for its local ports. This can return NULL,
1011 * meaning "don't know/don't care".
1012 */
1013 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds);
1014
1015 /*
1016 * Port's MAC EEE settings
1017 */
1018 bool (*support_eee)(struct dsa_switch *ds, int port);
1019 int (*set_mac_eee)(struct dsa_switch *ds, int port,
1020 struct ethtool_keee *e);
1021
1022 /* EEPROM access */
1023 int (*get_eeprom_len)(struct dsa_switch *ds);
1024 int (*get_eeprom)(struct dsa_switch *ds,
1025 struct ethtool_eeprom *eeprom, u8 *data);
1026 int (*set_eeprom)(struct dsa_switch *ds,
1027 struct ethtool_eeprom *eeprom, u8 *data);
1028
1029 /*
1030 * Register access.
1031 */
1032 int (*get_regs_len)(struct dsa_switch *ds, int port);
1033 void (*get_regs)(struct dsa_switch *ds, int port,
1034 struct ethtool_regs *regs, void *p);
1035
1036 /*
1037 * Upper device tracking.
1038 */
1039 int (*port_prechangeupper)(struct dsa_switch *ds, int port,
1040 struct netdev_notifier_changeupper_info *info);
1041
1042 /*
1043 * Bridge integration
1044 */
1045 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
1046 int (*port_bridge_join)(struct dsa_switch *ds, int port,
1047 struct dsa_bridge bridge,
1048 bool *tx_fwd_offload,
1049 struct netlink_ext_ack *extack);
1050 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
1051 struct dsa_bridge bridge);
1052 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
1053 u8 state);
1054 int (*port_mst_state_set)(struct dsa_switch *ds, int port,
1055 const struct switchdev_mst_state *state);
1056 void (*port_fast_age)(struct dsa_switch *ds, int port);
1057 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid);
1058 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port,
1059 struct switchdev_brport_flags flags,
1060 struct netlink_ext_ack *extack);
1061 int (*port_bridge_flags)(struct dsa_switch *ds, int port,
1062 struct switchdev_brport_flags flags,
1063 struct netlink_ext_ack *extack);
1064 void (*port_set_host_flood)(struct dsa_switch *ds, int port,
1065 bool uc, bool mc);
1066
1067 /*
1068 * VLAN support
1069 */
1070 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
1071 bool vlan_filtering,
1072 struct netlink_ext_ack *extack);
1073 int (*port_vlan_add)(struct dsa_switch *ds, int port,
1074 const struct switchdev_obj_port_vlan *vlan,
1075 struct netlink_ext_ack *extack);
1076 int (*port_vlan_del)(struct dsa_switch *ds, int port,
1077 const struct switchdev_obj_port_vlan *vlan);
1078 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge,
1079 const struct switchdev_vlan_msti *msti);
1080
1081 /*
1082 * Forwarding database
1083 */
1084 int (*port_fdb_add)(struct dsa_switch *ds, int port,
1085 const unsigned char *addr, u16 vid,
1086 struct dsa_db db);
1087 int (*port_fdb_del)(struct dsa_switch *ds, int port,
1088 const unsigned char *addr, u16 vid,
1089 struct dsa_db db);
1090 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
1091 dsa_fdb_dump_cb_t *cb, void *data);
1092 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag,
1093 const unsigned char *addr, u16 vid,
1094 struct dsa_db db);
1095 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag,
1096 const unsigned char *addr, u16 vid,
1097 struct dsa_db db);
1098
1099 /*
1100 * Multicast database
1101 */
1102 int (*port_mdb_add)(struct dsa_switch *ds, int port,
1103 const struct switchdev_obj_port_mdb *mdb,
1104 struct dsa_db db);
1105 int (*port_mdb_del)(struct dsa_switch *ds, int port,
1106 const struct switchdev_obj_port_mdb *mdb,
1107 struct dsa_db db);
1108 /*
1109 * RXNFC
1110 */
1111 int (*get_rxnfc)(struct dsa_switch *ds, int port,
1112 struct ethtool_rxnfc *nfc, u32 *rule_locs);
1113 int (*set_rxnfc)(struct dsa_switch *ds, int port,
1114 struct ethtool_rxnfc *nfc);
1115
1116 /*
1117 * TC integration
1118 */
1119 int (*cls_flower_add)(struct dsa_switch *ds, int port,
1120 struct flow_cls_offload *cls, bool ingress);
1121 int (*cls_flower_del)(struct dsa_switch *ds, int port,
1122 struct flow_cls_offload *cls, bool ingress);
1123 int (*cls_flower_stats)(struct dsa_switch *ds, int port,
1124 struct flow_cls_offload *cls, bool ingress);
1125 int (*port_mirror_add)(struct dsa_switch *ds, int port,
1126 struct dsa_mall_mirror_tc_entry *mirror,
1127 bool ingress, struct netlink_ext_ack *extack);
1128 void (*port_mirror_del)(struct dsa_switch *ds, int port,
1129 struct dsa_mall_mirror_tc_entry *mirror);
1130 int (*port_policer_add)(struct dsa_switch *ds, int port,
1131 const struct flow_action_police *policer,
1132 struct netlink_ext_ack *extack);
1133 void (*port_policer_del)(struct dsa_switch *ds, int port);
1134 int (*port_setup_tc)(struct dsa_switch *ds, int port,
1135 enum tc_setup_type type, void *type_data);
1136
1137 /*
1138 * Cross-chip operations
1139 */
1140 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index,
1141 int sw_index, int port,
1142 struct dsa_bridge bridge,
1143 struct netlink_ext_ack *extack);
1144 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index,
1145 int sw_index, int port,
1146 struct dsa_bridge bridge);
1147 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index,
1148 int port);
1149 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index,
1150 int port, struct dsa_lag lag,
1151 struct netdev_lag_upper_info *info,
1152 struct netlink_ext_ack *extack);
1153 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index,
1154 int port, struct dsa_lag lag);
1155
1156 /*
1157 * PTP functionality
1158 */
1159 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
1160 struct kernel_hwtstamp_config *config);
1161 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
1162 struct kernel_hwtstamp_config *config,
1163 struct netlink_ext_ack *extack);
1164 void (*port_txtstamp)(struct dsa_switch *ds, int port,
1165 struct sk_buff *skb);
1166 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
1167 struct sk_buff *skb, unsigned int type);
1168
1169 /* Devlink parameters, etc */
1170 int (*devlink_param_get)(struct dsa_switch *ds, u32 id,
1171 struct devlink_param_gset_ctx *ctx);
1172 int (*devlink_param_set)(struct dsa_switch *ds, u32 id,
1173 struct devlink_param_gset_ctx *ctx);
1174 int (*devlink_info_get)(struct dsa_switch *ds,
1175 struct devlink_info_req *req,
1176 struct netlink_ext_ack *extack);
1177 int (*devlink_sb_pool_get)(struct dsa_switch *ds,
1178 unsigned int sb_index, u16 pool_index,
1179 struct devlink_sb_pool_info *pool_info);
1180 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index,
1181 u16 pool_index, u32 size,
1182 enum devlink_sb_threshold_type threshold_type,
1183 struct netlink_ext_ack *extack);
1184 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port,
1185 unsigned int sb_index, u16 pool_index,
1186 u32 *p_threshold);
1187 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port,
1188 unsigned int sb_index, u16 pool_index,
1189 u32 threshold,
1190 struct netlink_ext_ack *extack);
1191 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port,
1192 unsigned int sb_index, u16 tc_index,
1193 enum devlink_sb_pool_type pool_type,
1194 u16 *p_pool_index, u32 *p_threshold);
1195 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port,
1196 unsigned int sb_index, u16 tc_index,
1197 enum devlink_sb_pool_type pool_type,
1198 u16 pool_index, u32 threshold,
1199 struct netlink_ext_ack *extack);
1200 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds,
1201 unsigned int sb_index);
1202 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds,
1203 unsigned int sb_index);
1204 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port,
1205 unsigned int sb_index, u16 pool_index,
1206 u32 *p_cur, u32 *p_max);
1207 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port,
1208 unsigned int sb_index, u16 tc_index,
1209 enum devlink_sb_pool_type pool_type,
1210 u32 *p_cur, u32 *p_max);
1211
1212 /*
1213 * MTU change functionality. Switches can also adjust their MRU through
1214 * this method. By MTU, one understands the SDU (L2 payload) length.
1215 * If the switch needs to account for the DSA tag on the CPU port, this
1216 * method needs to do so privately.
1217 */
1218 int (*port_change_mtu)(struct dsa_switch *ds, int port,
1219 int new_mtu);
1220 int (*port_max_mtu)(struct dsa_switch *ds, int port);
1221
1222 /*
1223 * LAG integration
1224 */
1225 int (*port_lag_change)(struct dsa_switch *ds, int port);
1226 int (*port_lag_join)(struct dsa_switch *ds, int port,
1227 struct dsa_lag lag,
1228 struct netdev_lag_upper_info *info,
1229 struct netlink_ext_ack *extack);
1230 int (*port_lag_leave)(struct dsa_switch *ds, int port,
1231 struct dsa_lag lag);
1232
1233 /*
1234 * HSR integration
1235 */
1236 int (*port_hsr_join)(struct dsa_switch *ds, int port,
1237 struct net_device *hsr,
1238 struct netlink_ext_ack *extack);
1239 int (*port_hsr_leave)(struct dsa_switch *ds, int port,
1240 struct net_device *hsr);
1241
1242 /*
1243 * MRP integration
1244 */
1245 int (*port_mrp_add)(struct dsa_switch *ds, int port,
1246 const struct switchdev_obj_mrp *mrp);
1247 int (*port_mrp_del)(struct dsa_switch *ds, int port,
1248 const struct switchdev_obj_mrp *mrp);
1249 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port,
1250 const struct switchdev_obj_ring_role_mrp *mrp);
1251 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
1252 const struct switchdev_obj_ring_role_mrp *mrp);
1253
1254 /*
1255 * tag_8021q operations
1256 */
1257 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid,
1258 u16 flags);
1259 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
1260
1261 /*
1262 * DSA conduit tracking operations
1263 */
1264 void (*conduit_state_change)(struct dsa_switch *ds,
1265 const struct net_device *conduit,
1266 bool operational);
1267};
1268
1269#define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \
1270 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \
1271 dsa_devlink_param_get, dsa_devlink_param_set, NULL)
1272
1273int dsa_devlink_param_get(struct devlink *dl, u32 id,
1274 struct devlink_param_gset_ctx *ctx,
1275 struct netlink_ext_ack *extack);
1276int dsa_devlink_param_set(struct devlink *dl, u32 id,
1277 struct devlink_param_gset_ctx *ctx,
1278 struct netlink_ext_ack *extack);
1279int dsa_devlink_params_register(struct dsa_switch *ds,
1280 const struct devlink_param *params,
1281 size_t params_count);
1282void dsa_devlink_params_unregister(struct dsa_switch *ds,
1283 const struct devlink_param *params,
1284 size_t params_count);
1285int dsa_devlink_resource_register(struct dsa_switch *ds,
1286 const char *resource_name,
1287 u64 resource_size,
1288 u64 resource_id,
1289 u64 parent_resource_id,
1290 const struct devlink_resource_size_params *size_params);
1291
1292void dsa_devlink_resources_unregister(struct dsa_switch *ds);
1293
1294void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds,
1295 u64 resource_id,
1296 devlink_resource_occ_get_t *occ_get,
1297 void *occ_get_priv);
1298void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds,
1299 u64 resource_id);
1300struct devlink_region *
1301dsa_devlink_region_create(struct dsa_switch *ds,
1302 const struct devlink_region_ops *ops,
1303 u32 region_max_snapshots, u64 region_size);
1304struct devlink_region *
1305dsa_devlink_port_region_create(struct dsa_switch *ds,
1306 int port,
1307 const struct devlink_port_region_ops *ops,
1308 u32 region_max_snapshots, u64 region_size);
1309void dsa_devlink_region_destroy(struct devlink_region *region);
1310
1311struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
1312
1313struct dsa_devlink_priv {
1314 struct dsa_switch *ds;
1315};
1316
1317static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
1318{
1319 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
1320
1321 return dl_priv->ds;
1322}
1323
1324static inline
1325struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port)
1326{
1327 struct devlink *dl = port->devlink;
1328 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
1329
1330 return dl_priv->ds;
1331}
1332
1333static inline int dsa_devlink_port_to_port(struct devlink_port *port)
1334{
1335 return port->index;
1336}
1337
1338bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port,
1339 const unsigned char *addr, u16 vid,
1340 struct dsa_db db);
1341bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port,
1342 const struct switchdev_obj_port_mdb *mdb,
1343 struct dsa_db db);
1344
1345int dsa_port_simple_hsr_validate(struct dsa_switch *ds, int port,
1346 struct net_device *hsr,
1347 struct netlink_ext_ack *extack);
1348int dsa_port_simple_hsr_join(struct dsa_switch *ds, int port,
1349 struct net_device *hsr,
1350 struct netlink_ext_ack *extack);
1351int dsa_port_simple_hsr_leave(struct dsa_switch *ds, int port,
1352 struct net_device *hsr);
1353
1354/* Keep inline for faster access in hot path */
1355static inline bool netdev_uses_dsa(const struct net_device *dev)
1356{
1357#if IS_ENABLED(CONFIG_NET_DSA)
1358 return dev->dsa_ptr && dev->dsa_ptr->rcv;
1359#endif
1360 return false;
1361}
1362
1363/* All DSA tags that push the EtherType to the right (basically all except tail
1364 * tags, which don't break dissection) can be treated the same from the
1365 * perspective of the flow dissector.
1366 *
1367 * We need to return:
1368 * - offset: the (B - A) difference between:
1369 * A. the position of the real EtherType and
1370 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes
1371 * after the normal EtherType was supposed to be)
1372 * The offset in bytes is exactly equal to the tagger overhead (and half of
1373 * that, in __be16 shorts).
1374 *
1375 * - proto: the value of the real EtherType.
1376 */
1377static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb,
1378 __be16 *proto, int *offset)
1379{
1380#if IS_ENABLED(CONFIG_NET_DSA)
1381 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops;
1382 int tag_len = ops->needed_headroom;
1383
1384 *offset = tag_len;
1385 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1];
1386#endif
1387}
1388
1389void dsa_unregister_switch(struct dsa_switch *ds);
1390int dsa_register_switch(struct dsa_switch *ds);
1391void dsa_switch_shutdown(struct dsa_switch *ds);
1392struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
1393void dsa_flush_workqueue(void);
1394#ifdef CONFIG_PM_SLEEP
1395int dsa_switch_suspend(struct dsa_switch *ds);
1396int dsa_switch_resume(struct dsa_switch *ds);
1397#else
1398static inline int dsa_switch_suspend(struct dsa_switch *ds)
1399{
1400 return 0;
1401}
1402static inline int dsa_switch_resume(struct dsa_switch *ds)
1403{
1404 return 0;
1405}
1406#endif /* CONFIG_PM_SLEEP */
1407
1408#if IS_ENABLED(CONFIG_NET_DSA)
1409bool dsa_user_dev_check(const struct net_device *dev);
1410#else
1411static inline bool dsa_user_dev_check(const struct net_device *dev)
1412{
1413 return false;
1414}
1415#endif
1416
1417netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);
1418void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
1419bool dsa_supports_eee(struct dsa_switch *ds, int port);
1420
1421#endif