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1/*
2 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
3 * Copyright (c) 2008-2009 Marvell Semiconductor
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11#ifndef __LINUX_NET_DSA_H
12#define __LINUX_NET_DSA_H
13
14#define DSA_MAX_SWITCHES 4
15#define DSA_MAX_PORTS 12
16
17struct dsa_chip_data {
18 /*
19 * How to access the switch configuration registers.
20 */
21 struct device *mii_bus;
22 int sw_addr;
23
24 /*
25 * The names of the switch's ports. Use "cpu" to
26 * designate the switch port that the cpu is connected to,
27 * "dsa" to indicate that this port is a DSA link to
28 * another switch, NULL to indicate the port is unused,
29 * or any other string to indicate this is a physical port.
30 */
31 char *port_names[DSA_MAX_PORTS];
32
33 /*
34 * An array (with nr_chips elements) of which element [a]
35 * indicates which port on this switch should be used to
36 * send packets to that are destined for switch a. Can be
37 * NULL if there is only one switch chip.
38 */
39 s8 *rtable;
40};
41
42struct dsa_platform_data {
43 /*
44 * Reference to a Linux network interface that connects
45 * to the root switch chip of the tree.
46 */
47 struct device *netdev;
48
49 /*
50 * Info structs describing each of the switch chips
51 * connected via this network interface.
52 */
53 int nr_chips;
54 struct dsa_chip_data *chip;
55};
56
57extern bool dsa_uses_dsa_tags(void *dsa_ptr);
58extern bool dsa_uses_trailer_tags(void *dsa_ptr);
59
60
61#endif
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;
27struct phy_device;
28struct fixed_phy_status;
29struct phylink_link_state;
30
31#define DSA_TAG_PROTO_NONE_VALUE 0
32#define DSA_TAG_PROTO_BRCM_VALUE 1
33#define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2
34#define DSA_TAG_PROTO_DSA_VALUE 3
35#define DSA_TAG_PROTO_EDSA_VALUE 4
36#define DSA_TAG_PROTO_GSWIP_VALUE 5
37#define DSA_TAG_PROTO_KSZ9477_VALUE 6
38#define DSA_TAG_PROTO_KSZ9893_VALUE 7
39#define DSA_TAG_PROTO_LAN9303_VALUE 8
40#define DSA_TAG_PROTO_MTK_VALUE 9
41#define DSA_TAG_PROTO_QCA_VALUE 10
42#define DSA_TAG_PROTO_TRAILER_VALUE 11
43#define DSA_TAG_PROTO_8021Q_VALUE 12
44#define DSA_TAG_PROTO_SJA1105_VALUE 13
45#define DSA_TAG_PROTO_KSZ8795_VALUE 14
46#define DSA_TAG_PROTO_OCELOT_VALUE 15
47#define DSA_TAG_PROTO_AR9331_VALUE 16
48#define DSA_TAG_PROTO_RTL4_A_VALUE 17
49#define DSA_TAG_PROTO_HELLCREEK_VALUE 18
50#define DSA_TAG_PROTO_XRS700X_VALUE 19
51#define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20
52#define DSA_TAG_PROTO_SEVILLE_VALUE 21
53#define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22
54#define DSA_TAG_PROTO_SJA1110_VALUE 23
55#define DSA_TAG_PROTO_RTL8_4_VALUE 24
56#define DSA_TAG_PROTO_RTL8_4T_VALUE 25
57#define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26
58#define DSA_TAG_PROTO_LAN937X_VALUE 27
59
60enum dsa_tag_protocol {
61 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
62 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
63 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE,
64 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
65 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
66 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
67 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
68 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
69 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
70 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
71 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
72 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
73 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
74 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
75 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
76 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
77 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE,
78 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE,
79 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE,
80 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE,
81 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE,
82 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE,
83 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE,
84 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE,
85 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE,
86 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE,
87 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE,
88 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE,
89};
90
91struct dsa_switch;
92
93struct dsa_device_ops {
94 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
95 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
96 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
97 int *offset);
98 int (*connect)(struct dsa_switch *ds);
99 void (*disconnect)(struct dsa_switch *ds);
100 unsigned int needed_headroom;
101 unsigned int needed_tailroom;
102 const char *name;
103 enum dsa_tag_protocol proto;
104 /* Some tagging protocols either mangle or shift the destination MAC
105 * address, in which case the DSA conduit would drop packets on ingress
106 * if what it understands out of the destination MAC address is not in
107 * its RX filter.
108 */
109 bool promisc_on_conduit;
110};
111
112struct dsa_lag {
113 struct net_device *dev;
114 unsigned int id;
115 struct mutex fdb_lock;
116 struct list_head fdbs;
117 refcount_t refcount;
118};
119
120struct dsa_switch_tree {
121 struct list_head list;
122
123 /* List of switch ports */
124 struct list_head ports;
125
126 /* Notifier chain for switch-wide events */
127 struct raw_notifier_head nh;
128
129 /* Tree identifier */
130 unsigned int index;
131
132 /* Number of switches attached to this tree */
133 struct kref refcount;
134
135 /* Maps offloaded LAG netdevs to a zero-based linear ID for
136 * drivers that need it.
137 */
138 struct dsa_lag **lags;
139
140 /* Tagging protocol operations */
141 const struct dsa_device_ops *tag_ops;
142
143 /* Default tagging protocol preferred by the switches in this
144 * tree.
145 */
146 enum dsa_tag_protocol default_proto;
147
148 /* Has this tree been applied to the hardware? */
149 bool setup;
150
151 /*
152 * Configuration data for the platform device that owns
153 * this dsa switch tree instance.
154 */
155 struct dsa_platform_data *pd;
156
157 /* List of DSA links composing the routing table */
158 struct list_head rtable;
159
160 /* Length of "lags" array */
161 unsigned int lags_len;
162
163 /* Track the largest switch index within a tree */
164 unsigned int last_switch;
165};
166
167/* LAG IDs are one-based, the dst->lags array is zero-based */
168#define dsa_lags_foreach_id(_id, _dst) \
169 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \
170 if ((_dst)->lags[(_id) - 1])
171
172#define dsa_lag_foreach_port(_dp, _dst, _lag) \
173 list_for_each_entry((_dp), &(_dst)->ports, list) \
174 if (dsa_port_offloads_lag((_dp), (_lag)))
175
176#define dsa_hsr_foreach_port(_dp, _ds, _hsr) \
177 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
178 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr))
179
180static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst,
181 unsigned int id)
182{
183 /* DSA LAG IDs are one-based, dst->lags is zero-based */
184 return dst->lags[id - 1];
185}
186
187static inline int dsa_lag_id(struct dsa_switch_tree *dst,
188 struct net_device *lag_dev)
189{
190 unsigned int id;
191
192 dsa_lags_foreach_id(id, dst) {
193 struct dsa_lag *lag = dsa_lag_by_id(dst, id);
194
195 if (lag->dev == lag_dev)
196 return lag->id;
197 }
198
199 return -ENODEV;
200}
201
202/* TC matchall action types */
203enum dsa_port_mall_action_type {
204 DSA_PORT_MALL_MIRROR,
205 DSA_PORT_MALL_POLICER,
206};
207
208/* TC mirroring entry */
209struct dsa_mall_mirror_tc_entry {
210 u8 to_local_port;
211 bool ingress;
212};
213
214/* TC port policer entry */
215struct dsa_mall_policer_tc_entry {
216 u32 burst;
217 u64 rate_bytes_per_sec;
218};
219
220/* TC matchall entry */
221struct dsa_mall_tc_entry {
222 struct list_head list;
223 unsigned long cookie;
224 enum dsa_port_mall_action_type type;
225 union {
226 struct dsa_mall_mirror_tc_entry mirror;
227 struct dsa_mall_policer_tc_entry policer;
228 };
229};
230
231struct dsa_bridge {
232 struct net_device *dev;
233 unsigned int num;
234 bool tx_fwd_offload;
235 refcount_t refcount;
236};
237
238struct dsa_port {
239 /* A CPU port is physically connected to a conduit device. A user port
240 * exposes a network device to user-space, called 'user' here.
241 */
242 union {
243 struct net_device *conduit;
244 struct net_device *user;
245 };
246
247 /* Copy of the tagging protocol operations, for quicker access
248 * in the data path. Valid only for the CPU ports.
249 */
250 const struct dsa_device_ops *tag_ops;
251
252 /* Copies for faster access in conduit receive hot path */
253 struct dsa_switch_tree *dst;
254 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
255
256 struct dsa_switch *ds;
257
258 unsigned int index;
259
260 enum {
261 DSA_PORT_TYPE_UNUSED = 0,
262 DSA_PORT_TYPE_CPU,
263 DSA_PORT_TYPE_DSA,
264 DSA_PORT_TYPE_USER,
265 } type;
266
267 const char *name;
268 struct dsa_port *cpu_dp;
269 u8 mac[ETH_ALEN];
270
271 u8 stp_state;
272
273 /* Warning: the following bit fields are not atomic, and updating them
274 * can only be done from code paths where concurrency is not possible
275 * (probe time or under rtnl_lock).
276 */
277 u8 vlan_filtering:1;
278
279 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */
280 u8 learning:1;
281
282 u8 lag_tx_enabled:1;
283
284 /* conduit state bits, valid only on CPU ports */
285 u8 conduit_admin_up:1;
286 u8 conduit_oper_up:1;
287
288 /* Valid only on user ports */
289 u8 cpu_port_in_lag:1;
290
291 u8 setup:1;
292
293 struct device_node *dn;
294 unsigned int ageing_time;
295
296 struct dsa_bridge *bridge;
297 struct devlink_port devlink_port;
298 struct phylink *pl;
299 struct phylink_config pl_config;
300 struct dsa_lag *lag;
301 struct net_device *hsr_dev;
302
303 struct list_head list;
304
305 /*
306 * Original copy of the conduit netdev ethtool_ops
307 */
308 const struct ethtool_ops *orig_ethtool_ops;
309
310 /* List of MAC addresses that must be forwarded on this port.
311 * These are only valid on CPU ports and DSA links.
312 */
313 struct mutex addr_lists_lock;
314 struct list_head fdbs;
315 struct list_head mdbs;
316
317 struct mutex vlans_lock;
318 union {
319 /* List of VLANs that CPU and DSA ports are members of.
320 * Access to this is serialized by the sleepable @vlans_lock.
321 */
322 struct list_head vlans;
323 /* List of VLANs that user ports are members of.
324 * Access to this is serialized by netif_addr_lock_bh().
325 */
326 struct list_head user_vlans;
327 };
328};
329
330/* TODO: ideally DSA ports would have a single dp->link_dp member,
331 * and no dst->rtable nor this struct dsa_link would be needed,
332 * but this would require some more complex tree walking,
333 * so keep it stupid at the moment and list them all.
334 */
335struct dsa_link {
336 struct dsa_port *dp;
337 struct dsa_port *link_dp;
338 struct list_head list;
339};
340
341enum dsa_db_type {
342 DSA_DB_PORT,
343 DSA_DB_LAG,
344 DSA_DB_BRIDGE,
345};
346
347struct dsa_db {
348 enum dsa_db_type type;
349
350 union {
351 const struct dsa_port *dp;
352 struct dsa_lag lag;
353 struct dsa_bridge bridge;
354 };
355};
356
357struct dsa_mac_addr {
358 unsigned char addr[ETH_ALEN];
359 u16 vid;
360 refcount_t refcount;
361 struct list_head list;
362 struct dsa_db db;
363};
364
365struct dsa_vlan {
366 u16 vid;
367 refcount_t refcount;
368 struct list_head list;
369};
370
371struct dsa_switch {
372 struct device *dev;
373
374 /*
375 * Parent switch tree, and switch index.
376 */
377 struct dsa_switch_tree *dst;
378 unsigned int index;
379
380 /* Warning: the following bit fields are not atomic, and updating them
381 * can only be done from code paths where concurrency is not possible
382 * (probe time or under rtnl_lock).
383 */
384 u32 setup:1;
385
386 /* Disallow bridge core from requesting different VLAN awareness
387 * settings on ports if not hardware-supported
388 */
389 u32 vlan_filtering_is_global:1;
390
391 /* Keep VLAN filtering enabled on ports not offloading any upper */
392 u32 needs_standalone_vlan_filtering:1;
393
394 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges
395 * that have vlan_filtering=0. All drivers should ideally set this (and
396 * then the option would get removed), but it is unknown whether this
397 * would break things or not.
398 */
399 u32 configure_vlan_while_not_filtering:1;
400
401 /* If the switch driver always programs the CPU port as egress tagged
402 * despite the VLAN configuration indicating otherwise, then setting
403 * @untag_bridge_pvid will force the DSA receive path to pop the
404 * bridge's default_pvid VLAN tagged frames to offer a consistent
405 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge
406 * device.
407 */
408 u32 untag_bridge_pvid:1;
409
410 /* Let DSA manage the FDB entries towards the
411 * CPU, based on the software bridge database.
412 */
413 u32 assisted_learning_on_cpu_port:1;
414
415 /* In case vlan_filtering_is_global is set, the VLAN awareness state
416 * should be retrieved from here and not from the per-port settings.
417 */
418 u32 vlan_filtering:1;
419
420 /* For switches that only have the MRU configurable. To ensure the
421 * configured MTU is not exceeded, normalization of MRU on all bridged
422 * interfaces is needed.
423 */
424 u32 mtu_enforcement_ingress:1;
425
426 /* Drivers that isolate the FDBs of multiple bridges must set this
427 * to true to receive the bridge as an argument in .port_fdb_{add,del}
428 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be
429 * passed as zero.
430 */
431 u32 fdb_isolation:1;
432
433 /* Listener for switch fabric events */
434 struct notifier_block nb;
435
436 /*
437 * Give the switch driver somewhere to hang its private data
438 * structure.
439 */
440 void *priv;
441
442 void *tagger_data;
443
444 /*
445 * Configuration data for this switch.
446 */
447 struct dsa_chip_data *cd;
448
449 /*
450 * The switch operations.
451 */
452 const struct dsa_switch_ops *ops;
453
454 /*
455 * User mii_bus and devices for the individual ports.
456 */
457 u32 phys_mii_mask;
458 struct mii_bus *user_mii_bus;
459
460 /* Ageing Time limits in msecs */
461 unsigned int ageing_time_min;
462 unsigned int ageing_time_max;
463
464 /* Storage for drivers using tag_8021q */
465 struct dsa_8021q_context *tag_8021q_ctx;
466
467 /* devlink used to represent this switch device */
468 struct devlink *devlink;
469
470 /* Number of switch port queues */
471 unsigned int num_tx_queues;
472
473 /* Drivers that benefit from having an ID associated with each
474 * offloaded LAG should set this to the maximum number of
475 * supported IDs. DSA will then maintain a mapping of _at
476 * least_ these many IDs, accessible to drivers via
477 * dsa_lag_id().
478 */
479 unsigned int num_lag_ids;
480
481 /* Drivers that support bridge forwarding offload or FDB isolation
482 * should set this to the maximum number of bridges spanning the same
483 * switch tree (or all trees, in the case of cross-tree bridging
484 * support) that can be offloaded.
485 */
486 unsigned int max_num_bridges;
487
488 unsigned int num_ports;
489};
490
491static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
492{
493 struct dsa_switch_tree *dst = ds->dst;
494 struct dsa_port *dp;
495
496 list_for_each_entry(dp, &dst->ports, list)
497 if (dp->ds == ds && dp->index == p)
498 return dp;
499
500 return NULL;
501}
502
503static inline bool dsa_port_is_dsa(struct dsa_port *port)
504{
505 return port->type == DSA_PORT_TYPE_DSA;
506}
507
508static inline bool dsa_port_is_cpu(struct dsa_port *port)
509{
510 return port->type == DSA_PORT_TYPE_CPU;
511}
512
513static inline bool dsa_port_is_user(struct dsa_port *dp)
514{
515 return dp->type == DSA_PORT_TYPE_USER;
516}
517
518static inline bool dsa_port_is_unused(struct dsa_port *dp)
519{
520 return dp->type == DSA_PORT_TYPE_UNUSED;
521}
522
523static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp)
524{
525 return dsa_port_is_cpu(dp) && dp->conduit_admin_up &&
526 dp->conduit_oper_up;
527}
528
529static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
530{
531 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
532}
533
534static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
535{
536 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
537}
538
539static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
540{
541 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
542}
543
544static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
545{
546 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
547}
548
549#define dsa_tree_for_each_user_port(_dp, _dst) \
550 list_for_each_entry((_dp), &(_dst)->ports, list) \
551 if (dsa_port_is_user((_dp)))
552
553#define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \
554 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \
555 if (dsa_port_is_user((_dp)))
556
557#define dsa_tree_for_each_cpu_port(_dp, _dst) \
558 list_for_each_entry((_dp), &(_dst)->ports, list) \
559 if (dsa_port_is_cpu((_dp)))
560
561#define dsa_switch_for_each_port(_dp, _ds) \
562 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
563 if ((_dp)->ds == (_ds))
564
565#define dsa_switch_for_each_port_safe(_dp, _next, _ds) \
566 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \
567 if ((_dp)->ds == (_ds))
568
569#define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \
570 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \
571 if ((_dp)->ds == (_ds))
572
573#define dsa_switch_for_each_available_port(_dp, _ds) \
574 dsa_switch_for_each_port((_dp), (_ds)) \
575 if (!dsa_port_is_unused((_dp)))
576
577#define dsa_switch_for_each_user_port(_dp, _ds) \
578 dsa_switch_for_each_port((_dp), (_ds)) \
579 if (dsa_port_is_user((_dp)))
580
581#define dsa_switch_for_each_cpu_port(_dp, _ds) \
582 dsa_switch_for_each_port((_dp), (_ds)) \
583 if (dsa_port_is_cpu((_dp)))
584
585#define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \
586 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \
587 if (dsa_port_is_cpu((_dp)))
588
589static inline u32 dsa_user_ports(struct dsa_switch *ds)
590{
591 struct dsa_port *dp;
592 u32 mask = 0;
593
594 dsa_switch_for_each_user_port(dp, ds)
595 mask |= BIT(dp->index);
596
597 return mask;
598}
599
600static inline u32 dsa_cpu_ports(struct dsa_switch *ds)
601{
602 struct dsa_port *cpu_dp;
603 u32 mask = 0;
604
605 dsa_switch_for_each_cpu_port(cpu_dp, ds)
606 mask |= BIT(cpu_dp->index);
607
608 return mask;
609}
610
611/* Return the local port used to reach an arbitrary switch device */
612static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device)
613{
614 struct dsa_switch_tree *dst = ds->dst;
615 struct dsa_link *dl;
616
617 list_for_each_entry(dl, &dst->rtable, list)
618 if (dl->dp->ds == ds && dl->link_dp->ds->index == device)
619 return dl->dp->index;
620
621 return ds->num_ports;
622}
623
624/* Return the local port used to reach an arbitrary switch port */
625static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
626 int port)
627{
628 if (device == ds->index)
629 return port;
630 else
631 return dsa_routing_port(ds, device);
632}
633
634/* Return the local port used to reach the dedicated CPU port */
635static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
636{
637 const struct dsa_port *dp = dsa_to_port(ds, port);
638 const struct dsa_port *cpu_dp = dp->cpu_dp;
639
640 if (!cpu_dp)
641 return port;
642
643 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
644}
645
646/* Return true if this is the local port used to reach the CPU port */
647static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
648{
649 if (dsa_is_unused_port(ds, port))
650 return false;
651
652 return port == dsa_upstream_port(ds, port);
653}
654
655/* Return true if this is a DSA port leading away from the CPU */
656static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port)
657{
658 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port);
659}
660
661/* Return the local port used to reach the CPU port */
662static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds)
663{
664 struct dsa_port *dp;
665
666 dsa_switch_for_each_available_port(dp, ds) {
667 return dsa_upstream_port(ds, dp->index);
668 }
669
670 return ds->num_ports;
671}
672
673/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
674 * that the routing port from @downstream_ds to @upstream_ds is also the port
675 * which @downstream_ds uses to reach its dedicated CPU.
676 */
677static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
678 struct dsa_switch *downstream_ds)
679{
680 int routing_port;
681
682 if (upstream_ds == downstream_ds)
683 return true;
684
685 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
686
687 return dsa_is_upstream_port(downstream_ds, routing_port);
688}
689
690static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
691{
692 const struct dsa_switch *ds = dp->ds;
693
694 if (ds->vlan_filtering_is_global)
695 return ds->vlan_filtering;
696 else
697 return dp->vlan_filtering;
698}
699
700static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp)
701{
702 return dp->lag ? dp->lag->id : 0;
703}
704
705static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp)
706{
707 return dp->lag ? dp->lag->dev : NULL;
708}
709
710static inline bool dsa_port_offloads_lag(struct dsa_port *dp,
711 const struct dsa_lag *lag)
712{
713 return dsa_port_lag_dev_get(dp) == lag->dev;
714}
715
716static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp)
717{
718 if (dp->cpu_port_in_lag)
719 return dsa_port_lag_dev_get(dp->cpu_dp);
720
721 return dp->cpu_dp->conduit;
722}
723
724static inline
725struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
726{
727 if (!dp->bridge)
728 return NULL;
729
730 if (dp->lag)
731 return dp->lag->dev;
732 else if (dp->hsr_dev)
733 return dp->hsr_dev;
734
735 return dp->user;
736}
737
738static inline struct net_device *
739dsa_port_bridge_dev_get(const struct dsa_port *dp)
740{
741 return dp->bridge ? dp->bridge->dev : NULL;
742}
743
744static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp)
745{
746 return dp->bridge ? dp->bridge->num : 0;
747}
748
749static inline bool dsa_port_bridge_same(const struct dsa_port *a,
750 const struct dsa_port *b)
751{
752 struct net_device *br_a = dsa_port_bridge_dev_get(a);
753 struct net_device *br_b = dsa_port_bridge_dev_get(b);
754
755 /* Standalone ports are not in the same bridge with one another */
756 return (!br_a || !br_b) ? false : (br_a == br_b);
757}
758
759static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
760 const struct net_device *dev)
761{
762 return dsa_port_to_bridge_port(dp) == dev;
763}
764
765static inline bool
766dsa_port_offloads_bridge_dev(struct dsa_port *dp,
767 const struct net_device *bridge_dev)
768{
769 /* DSA ports connected to a bridge, and event was emitted
770 * for the bridge.
771 */
772 return dsa_port_bridge_dev_get(dp) == bridge_dev;
773}
774
775static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
776 const struct dsa_bridge *bridge)
777{
778 return dsa_port_bridge_dev_get(dp) == bridge->dev;
779}
780
781/* Returns true if any port of this tree offloads the given net_device */
782static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
783 const struct net_device *dev)
784{
785 struct dsa_port *dp;
786
787 list_for_each_entry(dp, &dst->ports, list)
788 if (dsa_port_offloads_bridge_port(dp, dev))
789 return true;
790
791 return false;
792}
793
794/* Returns true if any port of this tree offloads the given bridge */
795static inline bool
796dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst,
797 const struct net_device *bridge_dev)
798{
799 struct dsa_port *dp;
800
801 list_for_each_entry(dp, &dst->ports, list)
802 if (dsa_port_offloads_bridge_dev(dp, bridge_dev))
803 return true;
804
805 return false;
806}
807
808static inline bool dsa_port_tree_same(const struct dsa_port *a,
809 const struct dsa_port *b)
810{
811 return a->ds->dst == b->ds->dst;
812}
813
814typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
815 bool is_static, void *data);
816struct dsa_switch_ops {
817 /*
818 * Tagging protocol helpers called for the CPU ports and DSA links.
819 * @get_tag_protocol retrieves the initial tagging protocol and is
820 * mandatory. Switches which can operate using multiple tagging
821 * protocols should implement @change_tag_protocol and report in
822 * @get_tag_protocol the tagger in current use.
823 */
824 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
825 int port,
826 enum dsa_tag_protocol mprot);
827 int (*change_tag_protocol)(struct dsa_switch *ds,
828 enum dsa_tag_protocol proto);
829 /*
830 * Method for switch drivers to connect to the tagging protocol driver
831 * in current use. The switch driver can provide handlers for certain
832 * types of packets for switch management.
833 */
834 int (*connect_tag_protocol)(struct dsa_switch *ds,
835 enum dsa_tag_protocol proto);
836
837 int (*port_change_conduit)(struct dsa_switch *ds, int port,
838 struct net_device *conduit,
839 struct netlink_ext_ack *extack);
840
841 /* Optional switch-wide initialization and destruction methods */
842 int (*setup)(struct dsa_switch *ds);
843 void (*teardown)(struct dsa_switch *ds);
844
845 /* Per-port initialization and destruction methods. Mandatory if the
846 * driver registers devlink port regions, optional otherwise.
847 */
848 int (*port_setup)(struct dsa_switch *ds, int port);
849 void (*port_teardown)(struct dsa_switch *ds, int port);
850
851 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
852
853 /*
854 * Access to the switch's PHY registers.
855 */
856 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
857 int (*phy_write)(struct dsa_switch *ds, int port,
858 int regnum, u16 val);
859
860 /*
861 * Link state adjustment (called from libphy)
862 */
863 void (*adjust_link)(struct dsa_switch *ds, int port,
864 struct phy_device *phydev);
865 void (*fixed_link_update)(struct dsa_switch *ds, int port,
866 struct fixed_phy_status *st);
867
868 /*
869 * PHYLINK integration
870 */
871 void (*phylink_get_caps)(struct dsa_switch *ds, int port,
872 struct phylink_config *config);
873 struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds,
874 int port,
875 phy_interface_t iface);
876 int (*phylink_mac_prepare)(struct dsa_switch *ds, int port,
877 unsigned int mode,
878 phy_interface_t interface);
879 void (*phylink_mac_config)(struct dsa_switch *ds, int port,
880 unsigned int mode,
881 const struct phylink_link_state *state);
882 int (*phylink_mac_finish)(struct dsa_switch *ds, int port,
883 unsigned int mode,
884 phy_interface_t interface);
885 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port,
886 unsigned int mode,
887 phy_interface_t interface);
888 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port,
889 unsigned int mode,
890 phy_interface_t interface,
891 struct phy_device *phydev,
892 int speed, int duplex,
893 bool tx_pause, bool rx_pause);
894 void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
895 struct phylink_link_state *state);
896 /*
897 * Port statistics counters.
898 */
899 void (*get_strings)(struct dsa_switch *ds, int port,
900 u32 stringset, uint8_t *data);
901 void (*get_ethtool_stats)(struct dsa_switch *ds,
902 int port, uint64_t *data);
903 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
904 void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
905 int port, uint64_t *data);
906 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port,
907 struct ethtool_eth_phy_stats *phy_stats);
908 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port,
909 struct ethtool_eth_mac_stats *mac_stats);
910 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port,
911 struct ethtool_eth_ctrl_stats *ctrl_stats);
912 void (*get_rmon_stats)(struct dsa_switch *ds, int port,
913 struct ethtool_rmon_stats *rmon_stats,
914 const struct ethtool_rmon_hist_range **ranges);
915 void (*get_stats64)(struct dsa_switch *ds, int port,
916 struct rtnl_link_stats64 *s);
917 void (*get_pause_stats)(struct dsa_switch *ds, int port,
918 struct ethtool_pause_stats *pause_stats);
919 void (*self_test)(struct dsa_switch *ds, int port,
920 struct ethtool_test *etest, u64 *data);
921
922 /*
923 * ethtool Wake-on-LAN
924 */
925 void (*get_wol)(struct dsa_switch *ds, int port,
926 struct ethtool_wolinfo *w);
927 int (*set_wol)(struct dsa_switch *ds, int port,
928 struct ethtool_wolinfo *w);
929
930 /*
931 * ethtool timestamp info
932 */
933 int (*get_ts_info)(struct dsa_switch *ds, int port,
934 struct ethtool_ts_info *ts);
935
936 /*
937 * ethtool MAC merge layer
938 */
939 int (*get_mm)(struct dsa_switch *ds, int port,
940 struct ethtool_mm_state *state);
941 int (*set_mm)(struct dsa_switch *ds, int port,
942 struct ethtool_mm_cfg *cfg,
943 struct netlink_ext_ack *extack);
944 void (*get_mm_stats)(struct dsa_switch *ds, int port,
945 struct ethtool_mm_stats *stats);
946
947 /*
948 * DCB ops
949 */
950 int (*port_get_default_prio)(struct dsa_switch *ds, int port);
951 int (*port_set_default_prio)(struct dsa_switch *ds, int port,
952 u8 prio);
953 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp);
954 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
955 u8 prio);
956 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
957 u8 prio);
958
959 /*
960 * Suspend and resume
961 */
962 int (*suspend)(struct dsa_switch *ds);
963 int (*resume)(struct dsa_switch *ds);
964
965 /*
966 * Port enable/disable
967 */
968 int (*port_enable)(struct dsa_switch *ds, int port,
969 struct phy_device *phy);
970 void (*port_disable)(struct dsa_switch *ds, int port);
971
972
973 /*
974 * Notification for MAC address changes on user ports. Drivers can
975 * currently only veto operations. They should not use the method to
976 * program the hardware, since the operation is not rolled back in case
977 * of other errors.
978 */
979 int (*port_set_mac_address)(struct dsa_switch *ds, int port,
980 const unsigned char *addr);
981
982 /*
983 * Compatibility between device trees defining multiple CPU ports and
984 * drivers which are not OK to use by default the numerically smallest
985 * CPU port of a switch for its local ports. This can return NULL,
986 * meaning "don't know/don't care".
987 */
988 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds);
989
990 /*
991 * Port's MAC EEE settings
992 */
993 int (*set_mac_eee)(struct dsa_switch *ds, int port,
994 struct ethtool_eee *e);
995 int (*get_mac_eee)(struct dsa_switch *ds, int port,
996 struct ethtool_eee *e);
997
998 /* EEPROM access */
999 int (*get_eeprom_len)(struct dsa_switch *ds);
1000 int (*get_eeprom)(struct dsa_switch *ds,
1001 struct ethtool_eeprom *eeprom, u8 *data);
1002 int (*set_eeprom)(struct dsa_switch *ds,
1003 struct ethtool_eeprom *eeprom, u8 *data);
1004
1005 /*
1006 * Register access.
1007 */
1008 int (*get_regs_len)(struct dsa_switch *ds, int port);
1009 void (*get_regs)(struct dsa_switch *ds, int port,
1010 struct ethtool_regs *regs, void *p);
1011
1012 /*
1013 * Upper device tracking.
1014 */
1015 int (*port_prechangeupper)(struct dsa_switch *ds, int port,
1016 struct netdev_notifier_changeupper_info *info);
1017
1018 /*
1019 * Bridge integration
1020 */
1021 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
1022 int (*port_bridge_join)(struct dsa_switch *ds, int port,
1023 struct dsa_bridge bridge,
1024 bool *tx_fwd_offload,
1025 struct netlink_ext_ack *extack);
1026 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
1027 struct dsa_bridge bridge);
1028 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
1029 u8 state);
1030 int (*port_mst_state_set)(struct dsa_switch *ds, int port,
1031 const struct switchdev_mst_state *state);
1032 void (*port_fast_age)(struct dsa_switch *ds, int port);
1033 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid);
1034 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port,
1035 struct switchdev_brport_flags flags,
1036 struct netlink_ext_ack *extack);
1037 int (*port_bridge_flags)(struct dsa_switch *ds, int port,
1038 struct switchdev_brport_flags flags,
1039 struct netlink_ext_ack *extack);
1040 void (*port_set_host_flood)(struct dsa_switch *ds, int port,
1041 bool uc, bool mc);
1042
1043 /*
1044 * VLAN support
1045 */
1046 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
1047 bool vlan_filtering,
1048 struct netlink_ext_ack *extack);
1049 int (*port_vlan_add)(struct dsa_switch *ds, int port,
1050 const struct switchdev_obj_port_vlan *vlan,
1051 struct netlink_ext_ack *extack);
1052 int (*port_vlan_del)(struct dsa_switch *ds, int port,
1053 const struct switchdev_obj_port_vlan *vlan);
1054 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge,
1055 const struct switchdev_vlan_msti *msti);
1056
1057 /*
1058 * Forwarding database
1059 */
1060 int (*port_fdb_add)(struct dsa_switch *ds, int port,
1061 const unsigned char *addr, u16 vid,
1062 struct dsa_db db);
1063 int (*port_fdb_del)(struct dsa_switch *ds, int port,
1064 const unsigned char *addr, u16 vid,
1065 struct dsa_db db);
1066 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
1067 dsa_fdb_dump_cb_t *cb, void *data);
1068 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag,
1069 const unsigned char *addr, u16 vid,
1070 struct dsa_db db);
1071 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag,
1072 const unsigned char *addr, u16 vid,
1073 struct dsa_db db);
1074
1075 /*
1076 * Multicast database
1077 */
1078 int (*port_mdb_add)(struct dsa_switch *ds, int port,
1079 const struct switchdev_obj_port_mdb *mdb,
1080 struct dsa_db db);
1081 int (*port_mdb_del)(struct dsa_switch *ds, int port,
1082 const struct switchdev_obj_port_mdb *mdb,
1083 struct dsa_db db);
1084 /*
1085 * RXNFC
1086 */
1087 int (*get_rxnfc)(struct dsa_switch *ds, int port,
1088 struct ethtool_rxnfc *nfc, u32 *rule_locs);
1089 int (*set_rxnfc)(struct dsa_switch *ds, int port,
1090 struct ethtool_rxnfc *nfc);
1091
1092 /*
1093 * TC integration
1094 */
1095 int (*cls_flower_add)(struct dsa_switch *ds, int port,
1096 struct flow_cls_offload *cls, bool ingress);
1097 int (*cls_flower_del)(struct dsa_switch *ds, int port,
1098 struct flow_cls_offload *cls, bool ingress);
1099 int (*cls_flower_stats)(struct dsa_switch *ds, int port,
1100 struct flow_cls_offload *cls, bool ingress);
1101 int (*port_mirror_add)(struct dsa_switch *ds, int port,
1102 struct dsa_mall_mirror_tc_entry *mirror,
1103 bool ingress, struct netlink_ext_ack *extack);
1104 void (*port_mirror_del)(struct dsa_switch *ds, int port,
1105 struct dsa_mall_mirror_tc_entry *mirror);
1106 int (*port_policer_add)(struct dsa_switch *ds, int port,
1107 struct dsa_mall_policer_tc_entry *policer);
1108 void (*port_policer_del)(struct dsa_switch *ds, int port);
1109 int (*port_setup_tc)(struct dsa_switch *ds, int port,
1110 enum tc_setup_type type, void *type_data);
1111
1112 /*
1113 * Cross-chip operations
1114 */
1115 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index,
1116 int sw_index, int port,
1117 struct dsa_bridge bridge,
1118 struct netlink_ext_ack *extack);
1119 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index,
1120 int sw_index, int port,
1121 struct dsa_bridge bridge);
1122 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index,
1123 int port);
1124 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index,
1125 int port, struct dsa_lag lag,
1126 struct netdev_lag_upper_info *info,
1127 struct netlink_ext_ack *extack);
1128 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index,
1129 int port, struct dsa_lag lag);
1130
1131 /*
1132 * PTP functionality
1133 */
1134 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
1135 struct ifreq *ifr);
1136 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
1137 struct ifreq *ifr);
1138 void (*port_txtstamp)(struct dsa_switch *ds, int port,
1139 struct sk_buff *skb);
1140 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
1141 struct sk_buff *skb, unsigned int type);
1142
1143 /* Devlink parameters, etc */
1144 int (*devlink_param_get)(struct dsa_switch *ds, u32 id,
1145 struct devlink_param_gset_ctx *ctx);
1146 int (*devlink_param_set)(struct dsa_switch *ds, u32 id,
1147 struct devlink_param_gset_ctx *ctx);
1148 int (*devlink_info_get)(struct dsa_switch *ds,
1149 struct devlink_info_req *req,
1150 struct netlink_ext_ack *extack);
1151 int (*devlink_sb_pool_get)(struct dsa_switch *ds,
1152 unsigned int sb_index, u16 pool_index,
1153 struct devlink_sb_pool_info *pool_info);
1154 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index,
1155 u16 pool_index, u32 size,
1156 enum devlink_sb_threshold_type threshold_type,
1157 struct netlink_ext_ack *extack);
1158 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port,
1159 unsigned int sb_index, u16 pool_index,
1160 u32 *p_threshold);
1161 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port,
1162 unsigned int sb_index, u16 pool_index,
1163 u32 threshold,
1164 struct netlink_ext_ack *extack);
1165 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port,
1166 unsigned int sb_index, u16 tc_index,
1167 enum devlink_sb_pool_type pool_type,
1168 u16 *p_pool_index, u32 *p_threshold);
1169 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port,
1170 unsigned int sb_index, u16 tc_index,
1171 enum devlink_sb_pool_type pool_type,
1172 u16 pool_index, u32 threshold,
1173 struct netlink_ext_ack *extack);
1174 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds,
1175 unsigned int sb_index);
1176 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds,
1177 unsigned int sb_index);
1178 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port,
1179 unsigned int sb_index, u16 pool_index,
1180 u32 *p_cur, u32 *p_max);
1181 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port,
1182 unsigned int sb_index, u16 tc_index,
1183 enum devlink_sb_pool_type pool_type,
1184 u32 *p_cur, u32 *p_max);
1185
1186 /*
1187 * MTU change functionality. Switches can also adjust their MRU through
1188 * this method. By MTU, one understands the SDU (L2 payload) length.
1189 * If the switch needs to account for the DSA tag on the CPU port, this
1190 * method needs to do so privately.
1191 */
1192 int (*port_change_mtu)(struct dsa_switch *ds, int port,
1193 int new_mtu);
1194 int (*port_max_mtu)(struct dsa_switch *ds, int port);
1195
1196 /*
1197 * LAG integration
1198 */
1199 int (*port_lag_change)(struct dsa_switch *ds, int port);
1200 int (*port_lag_join)(struct dsa_switch *ds, int port,
1201 struct dsa_lag lag,
1202 struct netdev_lag_upper_info *info,
1203 struct netlink_ext_ack *extack);
1204 int (*port_lag_leave)(struct dsa_switch *ds, int port,
1205 struct dsa_lag lag);
1206
1207 /*
1208 * HSR integration
1209 */
1210 int (*port_hsr_join)(struct dsa_switch *ds, int port,
1211 struct net_device *hsr,
1212 struct netlink_ext_ack *extack);
1213 int (*port_hsr_leave)(struct dsa_switch *ds, int port,
1214 struct net_device *hsr);
1215
1216 /*
1217 * MRP integration
1218 */
1219 int (*port_mrp_add)(struct dsa_switch *ds, int port,
1220 const struct switchdev_obj_mrp *mrp);
1221 int (*port_mrp_del)(struct dsa_switch *ds, int port,
1222 const struct switchdev_obj_mrp *mrp);
1223 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port,
1224 const struct switchdev_obj_ring_role_mrp *mrp);
1225 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
1226 const struct switchdev_obj_ring_role_mrp *mrp);
1227
1228 /*
1229 * tag_8021q operations
1230 */
1231 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid,
1232 u16 flags);
1233 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
1234
1235 /*
1236 * DSA conduit tracking operations
1237 */
1238 void (*conduit_state_change)(struct dsa_switch *ds,
1239 const struct net_device *conduit,
1240 bool operational);
1241};
1242
1243#define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \
1244 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \
1245 dsa_devlink_param_get, dsa_devlink_param_set, NULL)
1246
1247int dsa_devlink_param_get(struct devlink *dl, u32 id,
1248 struct devlink_param_gset_ctx *ctx);
1249int dsa_devlink_param_set(struct devlink *dl, u32 id,
1250 struct devlink_param_gset_ctx *ctx);
1251int dsa_devlink_params_register(struct dsa_switch *ds,
1252 const struct devlink_param *params,
1253 size_t params_count);
1254void dsa_devlink_params_unregister(struct dsa_switch *ds,
1255 const struct devlink_param *params,
1256 size_t params_count);
1257int dsa_devlink_resource_register(struct dsa_switch *ds,
1258 const char *resource_name,
1259 u64 resource_size,
1260 u64 resource_id,
1261 u64 parent_resource_id,
1262 const struct devlink_resource_size_params *size_params);
1263
1264void dsa_devlink_resources_unregister(struct dsa_switch *ds);
1265
1266void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds,
1267 u64 resource_id,
1268 devlink_resource_occ_get_t *occ_get,
1269 void *occ_get_priv);
1270void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds,
1271 u64 resource_id);
1272struct devlink_region *
1273dsa_devlink_region_create(struct dsa_switch *ds,
1274 const struct devlink_region_ops *ops,
1275 u32 region_max_snapshots, u64 region_size);
1276struct devlink_region *
1277dsa_devlink_port_region_create(struct dsa_switch *ds,
1278 int port,
1279 const struct devlink_port_region_ops *ops,
1280 u32 region_max_snapshots, u64 region_size);
1281void dsa_devlink_region_destroy(struct devlink_region *region);
1282
1283struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
1284
1285struct dsa_devlink_priv {
1286 struct dsa_switch *ds;
1287};
1288
1289static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
1290{
1291 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
1292
1293 return dl_priv->ds;
1294}
1295
1296static inline
1297struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port)
1298{
1299 struct devlink *dl = port->devlink;
1300 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
1301
1302 return dl_priv->ds;
1303}
1304
1305static inline int dsa_devlink_port_to_port(struct devlink_port *port)
1306{
1307 return port->index;
1308}
1309
1310struct dsa_switch_driver {
1311 struct list_head list;
1312 const struct dsa_switch_ops *ops;
1313};
1314
1315bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port,
1316 const unsigned char *addr, u16 vid,
1317 struct dsa_db db);
1318bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port,
1319 const struct switchdev_obj_port_mdb *mdb,
1320 struct dsa_db db);
1321
1322/* Keep inline for faster access in hot path */
1323static inline bool netdev_uses_dsa(const struct net_device *dev)
1324{
1325#if IS_ENABLED(CONFIG_NET_DSA)
1326 return dev->dsa_ptr && dev->dsa_ptr->rcv;
1327#endif
1328 return false;
1329}
1330
1331/* All DSA tags that push the EtherType to the right (basically all except tail
1332 * tags, which don't break dissection) can be treated the same from the
1333 * perspective of the flow dissector.
1334 *
1335 * We need to return:
1336 * - offset: the (B - A) difference between:
1337 * A. the position of the real EtherType and
1338 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes
1339 * after the normal EtherType was supposed to be)
1340 * The offset in bytes is exactly equal to the tagger overhead (and half of
1341 * that, in __be16 shorts).
1342 *
1343 * - proto: the value of the real EtherType.
1344 */
1345static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb,
1346 __be16 *proto, int *offset)
1347{
1348#if IS_ENABLED(CONFIG_NET_DSA)
1349 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops;
1350 int tag_len = ops->needed_headroom;
1351
1352 *offset = tag_len;
1353 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1];
1354#endif
1355}
1356
1357void dsa_unregister_switch(struct dsa_switch *ds);
1358int dsa_register_switch(struct dsa_switch *ds);
1359void dsa_switch_shutdown(struct dsa_switch *ds);
1360struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
1361void dsa_flush_workqueue(void);
1362#ifdef CONFIG_PM_SLEEP
1363int dsa_switch_suspend(struct dsa_switch *ds);
1364int dsa_switch_resume(struct dsa_switch *ds);
1365#else
1366static inline int dsa_switch_suspend(struct dsa_switch *ds)
1367{
1368 return 0;
1369}
1370static inline int dsa_switch_resume(struct dsa_switch *ds)
1371{
1372 return 0;
1373}
1374#endif /* CONFIG_PM_SLEEP */
1375
1376#if IS_ENABLED(CONFIG_NET_DSA)
1377bool dsa_user_dev_check(const struct net_device *dev);
1378#else
1379static inline bool dsa_user_dev_check(const struct net_device *dev)
1380{
1381 return false;
1382}
1383#endif
1384
1385netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);
1386void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
1387
1388#endif