xref: /openbmc/linux/include/net/devlink.h (revision 50fc8d92)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * include/net/devlink.h - Network physical device Netlink interface
4  * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
5  * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
6  */
7 #ifndef _NET_DEVLINK_H_
8 #define _NET_DEVLINK_H_
9 
10 #include <linux/device.h>
11 #include <linux/slab.h>
12 #include <linux/gfp.h>
13 #include <linux/list.h>
14 #include <linux/netdevice.h>
15 #include <linux/spinlock.h>
16 #include <linux/workqueue.h>
17 #include <linux/refcount.h>
18 #include <net/net_namespace.h>
19 #include <net/flow_offload.h>
20 #include <uapi/linux/devlink.h>
21 #include <linux/xarray.h>
22 #include <linux/firmware.h>
23 
24 #define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
25 	(__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
26 
27 struct devlink_dev_stats {
28 	u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
29 	u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
30 };
31 
32 struct devlink_ops;
33 
34 struct devlink {
35 	struct list_head list;
36 	struct list_head port_list;
37 	struct list_head sb_list;
38 	struct list_head dpipe_table_list;
39 	struct list_head resource_list;
40 	struct list_head param_list;
41 	struct list_head region_list;
42 	struct list_head reporter_list;
43 	struct mutex reporters_lock; /* protects reporter_list */
44 	struct devlink_dpipe_headers *dpipe_headers;
45 	struct list_head trap_list;
46 	struct list_head trap_group_list;
47 	struct list_head trap_policer_list;
48 	const struct devlink_ops *ops;
49 	struct xarray snapshot_ids;
50 	struct devlink_dev_stats stats;
51 	struct device *dev;
52 	possible_net_t _net;
53 	struct mutex lock; /* Serializes access to devlink instance specific objects such as
54 			    * port, sb, dpipe, resource, params, region, traps and more.
55 			    */
56 	u8 reload_failed:1,
57 	   reload_enabled:1,
58 	   registered:1;
59 	char priv[0] __aligned(NETDEV_ALIGN);
60 };
61 
62 struct devlink_port_phys_attrs {
63 	u32 port_number; /* Same value as "split group".
64 			  * A physical port which is visible to the user
65 			  * for a given port flavour.
66 			  */
67 	u32 split_subport_number; /* If the port is split, this is the number of subport. */
68 };
69 
70 /**
71  * struct devlink_port_pci_pf_attrs - devlink port's PCI PF attributes
72  * @controller: Associated controller number
73  * @pf: Associated PCI PF number for this port.
74  * @external: when set, indicates if a port is for an external controller
75  */
76 struct devlink_port_pci_pf_attrs {
77 	u32 controller;
78 	u16 pf;
79 	u8 external:1;
80 };
81 
82 /**
83  * struct devlink_port_pci_vf_attrs - devlink port's PCI VF attributes
84  * @controller: Associated controller number
85  * @pf: Associated PCI PF number for this port.
86  * @vf: Associated PCI VF for of the PCI PF for this port.
87  * @external: when set, indicates if a port is for an external controller
88  */
89 struct devlink_port_pci_vf_attrs {
90 	u32 controller;
91 	u16 pf;
92 	u16 vf;
93 	u8 external:1;
94 };
95 
96 /**
97  * struct devlink_port_attrs - devlink port object
98  * @flavour: flavour of the port
99  * @split: indicates if this is split port
100  * @splittable: indicates if the port can be split.
101  * @lanes: maximum number of lanes the port supports. 0 value is not passed to netlink.
102  * @switch_id: if the port is part of switch, this is buffer with ID, otherwise this is NULL
103  * @phys: physical port attributes
104  * @pci_pf: PCI PF port attributes
105  * @pci_vf: PCI VF port attributes
106  */
107 struct devlink_port_attrs {
108 	u8 split:1,
109 	   splittable:1;
110 	u32 lanes;
111 	enum devlink_port_flavour flavour;
112 	struct netdev_phys_item_id switch_id;
113 	union {
114 		struct devlink_port_phys_attrs phys;
115 		struct devlink_port_pci_pf_attrs pci_pf;
116 		struct devlink_port_pci_vf_attrs pci_vf;
117 	};
118 };
119 
120 struct devlink_port {
121 	struct list_head list;
122 	struct list_head param_list;
123 	struct list_head region_list;
124 	struct devlink *devlink;
125 	unsigned int index;
126 	bool registered;
127 	spinlock_t type_lock; /* Protects type and type_dev
128 			       * pointer consistency.
129 			       */
130 	enum devlink_port_type type;
131 	enum devlink_port_type desired_type;
132 	void *type_dev;
133 	struct devlink_port_attrs attrs;
134 	u8 attrs_set:1,
135 	   switch_port:1;
136 	struct delayed_work type_warn_dw;
137 	struct list_head reporter_list;
138 	struct mutex reporters_lock; /* Protects reporter_list */
139 };
140 
141 struct devlink_sb_pool_info {
142 	enum devlink_sb_pool_type pool_type;
143 	u32 size;
144 	enum devlink_sb_threshold_type threshold_type;
145 	u32 cell_size;
146 };
147 
148 /**
149  * struct devlink_dpipe_field - dpipe field object
150  * @name: field name
151  * @id: index inside the headers field array
152  * @bitwidth: bitwidth
153  * @mapping_type: mapping type
154  */
155 struct devlink_dpipe_field {
156 	const char *name;
157 	unsigned int id;
158 	unsigned int bitwidth;
159 	enum devlink_dpipe_field_mapping_type mapping_type;
160 };
161 
162 /**
163  * struct devlink_dpipe_header - dpipe header object
164  * @name: header name
165  * @id: index, global/local detrmined by global bit
166  * @fields: fields
167  * @fields_count: number of fields
168  * @global: indicates if header is shared like most protocol header
169  *	    or driver specific
170  */
171 struct devlink_dpipe_header {
172 	const char *name;
173 	unsigned int id;
174 	struct devlink_dpipe_field *fields;
175 	unsigned int fields_count;
176 	bool global;
177 };
178 
179 /**
180  * struct devlink_dpipe_match - represents match operation
181  * @type: type of match
182  * @header_index: header index (packets can have several headers of same
183  *		  type like in case of tunnels)
184  * @header: header
185  * @fieled_id: field index
186  */
187 struct devlink_dpipe_match {
188 	enum devlink_dpipe_match_type type;
189 	unsigned int header_index;
190 	struct devlink_dpipe_header *header;
191 	unsigned int field_id;
192 };
193 
194 /**
195  * struct devlink_dpipe_action - represents action operation
196  * @type: type of action
197  * @header_index: header index (packets can have several headers of same
198  *		  type like in case of tunnels)
199  * @header: header
200  * @fieled_id: field index
201  */
202 struct devlink_dpipe_action {
203 	enum devlink_dpipe_action_type type;
204 	unsigned int header_index;
205 	struct devlink_dpipe_header *header;
206 	unsigned int field_id;
207 };
208 
209 /**
210  * struct devlink_dpipe_value - represents value of match/action
211  * @action: action
212  * @match: match
213  * @mapping_value: in case the field has some mapping this value
214  *                 specified the mapping value
215  * @mapping_valid: specify if mapping value is valid
216  * @value_size: value size
217  * @value: value
218  * @mask: bit mask
219  */
220 struct devlink_dpipe_value {
221 	union {
222 		struct devlink_dpipe_action *action;
223 		struct devlink_dpipe_match *match;
224 	};
225 	unsigned int mapping_value;
226 	bool mapping_valid;
227 	unsigned int value_size;
228 	void *value;
229 	void *mask;
230 };
231 
232 /**
233  * struct devlink_dpipe_entry - table entry object
234  * @index: index of the entry in the table
235  * @match_values: match values
236  * @matche_values_count: count of matches tuples
237  * @action_values: actions values
238  * @action_values_count: count of actions values
239  * @counter: value of counter
240  * @counter_valid: Specify if value is valid from hardware
241  */
242 struct devlink_dpipe_entry {
243 	u64 index;
244 	struct devlink_dpipe_value *match_values;
245 	unsigned int match_values_count;
246 	struct devlink_dpipe_value *action_values;
247 	unsigned int action_values_count;
248 	u64 counter;
249 	bool counter_valid;
250 };
251 
252 /**
253  * struct devlink_dpipe_dump_ctx - context provided to driver in order
254  *				   to dump
255  * @info: info
256  * @cmd: devlink command
257  * @skb: skb
258  * @nest: top attribute
259  * @hdr: hdr
260  */
261 struct devlink_dpipe_dump_ctx {
262 	struct genl_info *info;
263 	enum devlink_command cmd;
264 	struct sk_buff *skb;
265 	struct nlattr *nest;
266 	void *hdr;
267 };
268 
269 struct devlink_dpipe_table_ops;
270 
271 /**
272  * struct devlink_dpipe_table - table object
273  * @priv: private
274  * @name: table name
275  * @counters_enabled: indicates if counters are active
276  * @counter_control_extern: indicates if counter control is in dpipe or
277  *			    external tool
278  * @resource_valid: Indicate that the resource id is valid
279  * @resource_id: relative resource this table is related to
280  * @resource_units: number of resource's unit consumed per table's entry
281  * @table_ops: table operations
282  * @rcu: rcu
283  */
284 struct devlink_dpipe_table {
285 	void *priv;
286 	struct list_head list;
287 	const char *name;
288 	bool counters_enabled;
289 	bool counter_control_extern;
290 	bool resource_valid;
291 	u64 resource_id;
292 	u64 resource_units;
293 	struct devlink_dpipe_table_ops *table_ops;
294 	struct rcu_head rcu;
295 };
296 
297 /**
298  * struct devlink_dpipe_table_ops - dpipe_table ops
299  * @actions_dump - dumps all tables actions
300  * @matches_dump - dumps all tables matches
301  * @entries_dump - dumps all active entries in the table
302  * @counters_set_update - when changing the counter status hardware sync
303  *			  maybe needed to allocate/free counter related
304  *			  resources
305  * @size_get - get size
306  */
307 struct devlink_dpipe_table_ops {
308 	int (*actions_dump)(void *priv, struct sk_buff *skb);
309 	int (*matches_dump)(void *priv, struct sk_buff *skb);
310 	int (*entries_dump)(void *priv, bool counters_enabled,
311 			    struct devlink_dpipe_dump_ctx *dump_ctx);
312 	int (*counters_set_update)(void *priv, bool enable);
313 	u64 (*size_get)(void *priv);
314 };
315 
316 /**
317  * struct devlink_dpipe_headers - dpipe headers
318  * @headers - header array can be shared (global bit) or driver specific
319  * @headers_count - count of headers
320  */
321 struct devlink_dpipe_headers {
322 	struct devlink_dpipe_header **headers;
323 	unsigned int headers_count;
324 };
325 
326 /**
327  * struct devlink_resource_size_params - resource's size parameters
328  * @size_min: minimum size which can be set
329  * @size_max: maximum size which can be set
330  * @size_granularity: size granularity
331  * @size_unit: resource's basic unit
332  */
333 struct devlink_resource_size_params {
334 	u64 size_min;
335 	u64 size_max;
336 	u64 size_granularity;
337 	enum devlink_resource_unit unit;
338 };
339 
340 static inline void
341 devlink_resource_size_params_init(struct devlink_resource_size_params *size_params,
342 				  u64 size_min, u64 size_max,
343 				  u64 size_granularity,
344 				  enum devlink_resource_unit unit)
345 {
346 	size_params->size_min = size_min;
347 	size_params->size_max = size_max;
348 	size_params->size_granularity = size_granularity;
349 	size_params->unit = unit;
350 }
351 
352 typedef u64 devlink_resource_occ_get_t(void *priv);
353 
354 /**
355  * struct devlink_resource - devlink resource
356  * @name: name of the resource
357  * @id: id, per devlink instance
358  * @size: size of the resource
359  * @size_new: updated size of the resource, reload is needed
360  * @size_valid: valid in case the total size of the resource is valid
361  *              including its children
362  * @parent: parent resource
363  * @size_params: size parameters
364  * @list: parent list
365  * @resource_list: list of child resources
366  */
367 struct devlink_resource {
368 	const char *name;
369 	u64 id;
370 	u64 size;
371 	u64 size_new;
372 	bool size_valid;
373 	struct devlink_resource *parent;
374 	struct devlink_resource_size_params size_params;
375 	struct list_head list;
376 	struct list_head resource_list;
377 	devlink_resource_occ_get_t *occ_get;
378 	void *occ_get_priv;
379 };
380 
381 #define DEVLINK_RESOURCE_ID_PARENT_TOP 0
382 
383 #define __DEVLINK_PARAM_MAX_STRING_VALUE 32
384 enum devlink_param_type {
385 	DEVLINK_PARAM_TYPE_U8,
386 	DEVLINK_PARAM_TYPE_U16,
387 	DEVLINK_PARAM_TYPE_U32,
388 	DEVLINK_PARAM_TYPE_STRING,
389 	DEVLINK_PARAM_TYPE_BOOL,
390 };
391 
392 union devlink_param_value {
393 	u8 vu8;
394 	u16 vu16;
395 	u32 vu32;
396 	char vstr[__DEVLINK_PARAM_MAX_STRING_VALUE];
397 	bool vbool;
398 };
399 
400 struct devlink_param_gset_ctx {
401 	union devlink_param_value val;
402 	enum devlink_param_cmode cmode;
403 };
404 
405 /**
406  * struct devlink_flash_notify - devlink dev flash notify data
407  * @status_msg: current status string
408  * @component: firmware component being updated
409  * @done: amount of work completed of total amount
410  * @total: amount of work expected to be done
411  * @timeout: expected max timeout in seconds
412  *
413  * These are values to be given to userland to be displayed in order
414  * to show current activity in a firmware update process.
415  */
416 struct devlink_flash_notify {
417 	const char *status_msg;
418 	const char *component;
419 	unsigned long done;
420 	unsigned long total;
421 	unsigned long timeout;
422 };
423 
424 /**
425  * struct devlink_param - devlink configuration parameter data
426  * @name: name of the parameter
427  * @generic: indicates if the parameter is generic or driver specific
428  * @type: parameter type
429  * @supported_cmodes: bitmap of supported configuration modes
430  * @get: get parameter value, used for runtime and permanent
431  *       configuration modes
432  * @set: set parameter value, used for runtime and permanent
433  *       configuration modes
434  * @validate: validate input value is applicable (within value range, etc.)
435  *
436  * This struct should be used by the driver to fill the data for
437  * a parameter it registers.
438  */
439 struct devlink_param {
440 	u32 id;
441 	const char *name;
442 	bool generic;
443 	enum devlink_param_type type;
444 	unsigned long supported_cmodes;
445 	int (*get)(struct devlink *devlink, u32 id,
446 		   struct devlink_param_gset_ctx *ctx);
447 	int (*set)(struct devlink *devlink, u32 id,
448 		   struct devlink_param_gset_ctx *ctx);
449 	int (*validate)(struct devlink *devlink, u32 id,
450 			union devlink_param_value val,
451 			struct netlink_ext_ack *extack);
452 };
453 
454 struct devlink_param_item {
455 	struct list_head list;
456 	const struct devlink_param *param;
457 	union devlink_param_value driverinit_value;
458 	bool driverinit_value_valid;
459 	bool published;
460 };
461 
462 enum devlink_param_generic_id {
463 	DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
464 	DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
465 	DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
466 	DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
467 	DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
468 	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
469 	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
470 	DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
471 	DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
472 	DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
473 	DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
474 
475 	/* add new param generic ids above here*/
476 	__DEVLINK_PARAM_GENERIC_ID_MAX,
477 	DEVLINK_PARAM_GENERIC_ID_MAX = __DEVLINK_PARAM_GENERIC_ID_MAX - 1,
478 };
479 
480 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME "internal_error_reset"
481 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
482 
483 #define DEVLINK_PARAM_GENERIC_MAX_MACS_NAME "max_macs"
484 #define DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE DEVLINK_PARAM_TYPE_U32
485 
486 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME "enable_sriov"
487 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE DEVLINK_PARAM_TYPE_BOOL
488 
489 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME "region_snapshot_enable"
490 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE DEVLINK_PARAM_TYPE_BOOL
491 
492 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME "ignore_ari"
493 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE DEVLINK_PARAM_TYPE_BOOL
494 
495 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME "msix_vec_per_pf_max"
496 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE DEVLINK_PARAM_TYPE_U32
497 
498 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME "msix_vec_per_pf_min"
499 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE DEVLINK_PARAM_TYPE_U32
500 
501 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME "fw_load_policy"
502 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE DEVLINK_PARAM_TYPE_U8
503 
504 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME \
505 	"reset_dev_on_drv_probe"
506 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE DEVLINK_PARAM_TYPE_U8
507 
508 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME "enable_roce"
509 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE DEVLINK_PARAM_TYPE_BOOL
510 
511 #define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME "enable_remote_dev_reset"
512 #define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
513 
514 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\
515 {									\
516 	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\
517 	.name = DEVLINK_PARAM_GENERIC_##_id##_NAME,			\
518 	.type = DEVLINK_PARAM_GENERIC_##_id##_TYPE,			\
519 	.generic = true,						\
520 	.supported_cmodes = _cmodes,					\
521 	.get = _get,							\
522 	.set = _set,							\
523 	.validate = _validate,						\
524 }
525 
526 #define DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, _get, _set, _validate)	\
527 {									\
528 	.id = _id,							\
529 	.name = _name,							\
530 	.type = _type,							\
531 	.supported_cmodes = _cmodes,					\
532 	.get = _get,							\
533 	.set = _set,							\
534 	.validate = _validate,						\
535 }
536 
537 /* Part number, identifier of board design */
538 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_ID	"board.id"
539 /* Revision of board design */
540 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_REV	"board.rev"
541 /* Maker of the board */
542 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE	"board.manufacture"
543 
544 /* Part number, identifier of asic design */
545 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_ID	"asic.id"
546 /* Revision of asic design */
547 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_REV	"asic.rev"
548 
549 /* Overall FW version */
550 #define DEVLINK_INFO_VERSION_GENERIC_FW		"fw"
551 /* Control processor FW version */
552 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT	"fw.mgmt"
553 /* FW interface specification version */
554 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT_API	"fw.mgmt.api"
555 /* Data path microcode controlling high-speed packet processing */
556 #define DEVLINK_INFO_VERSION_GENERIC_FW_APP	"fw.app"
557 /* UNDI software version */
558 #define DEVLINK_INFO_VERSION_GENERIC_FW_UNDI	"fw.undi"
559 /* NCSI support/handler version */
560 #define DEVLINK_INFO_VERSION_GENERIC_FW_NCSI	"fw.ncsi"
561 /* FW parameter set id */
562 #define DEVLINK_INFO_VERSION_GENERIC_FW_PSID	"fw.psid"
563 /* RoCE FW version */
564 #define DEVLINK_INFO_VERSION_GENERIC_FW_ROCE	"fw.roce"
565 /* Firmware bundle identifier */
566 #define DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID	"fw.bundle_id"
567 
568 /**
569  * struct devlink_flash_update_params - Flash Update parameters
570  * @fw: pointer to the firmware data to update from
571  * @component: the flash component to update
572  *
573  * With the exception of fw, drivers must opt-in to parameters by
574  * setting the appropriate bit in the supported_flash_update_params field in
575  * their devlink_ops structure.
576  */
577 struct devlink_flash_update_params {
578 	const struct firmware *fw;
579 	const char *component;
580 	u32 overwrite_mask;
581 };
582 
583 #define DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT		BIT(0)
584 #define DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK	BIT(1)
585 
586 struct devlink_region;
587 struct devlink_info_req;
588 
589 /**
590  * struct devlink_region_ops - Region operations
591  * @name: region name
592  * @destructor: callback used to free snapshot memory when deleting
593  * @snapshot: callback to request an immediate snapshot. On success,
594  *            the data variable must be updated to point to the snapshot data.
595  *            The function will be called while the devlink instance lock is
596  *            held.
597  * @priv: Pointer to driver private data for the region operation
598  */
599 struct devlink_region_ops {
600 	const char *name;
601 	void (*destructor)(const void *data);
602 	int (*snapshot)(struct devlink *devlink,
603 			const struct devlink_region_ops *ops,
604 			struct netlink_ext_ack *extack,
605 			u8 **data);
606 	void *priv;
607 };
608 
609 /**
610  * struct devlink_port_region_ops - Region operations for a port
611  * @name: region name
612  * @destructor: callback used to free snapshot memory when deleting
613  * @snapshot: callback to request an immediate snapshot. On success,
614  *            the data variable must be updated to point to the snapshot data.
615  *            The function will be called while the devlink instance lock is
616  *            held.
617  * @priv: Pointer to driver private data for the region operation
618  */
619 struct devlink_port_region_ops {
620 	const char *name;
621 	void (*destructor)(const void *data);
622 	int (*snapshot)(struct devlink_port *port,
623 			const struct devlink_port_region_ops *ops,
624 			struct netlink_ext_ack *extack,
625 			u8 **data);
626 	void *priv;
627 };
628 
629 struct devlink_fmsg;
630 struct devlink_health_reporter;
631 
632 enum devlink_health_reporter_state {
633 	DEVLINK_HEALTH_REPORTER_STATE_HEALTHY,
634 	DEVLINK_HEALTH_REPORTER_STATE_ERROR,
635 };
636 
637 /**
638  * struct devlink_health_reporter_ops - Reporter operations
639  * @name: reporter name
640  * @recover: callback to recover from reported error
641  *           if priv_ctx is NULL, run a full recover
642  * @dump: callback to dump an object
643  *        if priv_ctx is NULL, run a full dump
644  * @diagnose: callback to diagnose the current status
645  * @test: callback to trigger a test event
646  */
647 
648 struct devlink_health_reporter_ops {
649 	char *name;
650 	int (*recover)(struct devlink_health_reporter *reporter,
651 		       void *priv_ctx, struct netlink_ext_ack *extack);
652 	int (*dump)(struct devlink_health_reporter *reporter,
653 		    struct devlink_fmsg *fmsg, void *priv_ctx,
654 		    struct netlink_ext_ack *extack);
655 	int (*diagnose)(struct devlink_health_reporter *reporter,
656 			struct devlink_fmsg *fmsg,
657 			struct netlink_ext_ack *extack);
658 	int (*test)(struct devlink_health_reporter *reporter,
659 		    struct netlink_ext_ack *extack);
660 };
661 
662 /**
663  * struct devlink_trap_metadata - Packet trap metadata.
664  * @trap_name: Trap name.
665  * @trap_group_name: Trap group name.
666  * @input_dev: Input netdevice.
667  * @fa_cookie: Flow action user cookie.
668  * @trap_type: Trap type.
669  */
670 struct devlink_trap_metadata {
671 	const char *trap_name;
672 	const char *trap_group_name;
673 	struct net_device *input_dev;
674 	const struct flow_action_cookie *fa_cookie;
675 	enum devlink_trap_type trap_type;
676 };
677 
678 /**
679  * struct devlink_trap_policer - Immutable packet trap policer attributes.
680  * @id: Policer identifier.
681  * @init_rate: Initial rate in packets / sec.
682  * @init_burst: Initial burst size in packets.
683  * @max_rate: Maximum rate.
684  * @min_rate: Minimum rate.
685  * @max_burst: Maximum burst size.
686  * @min_burst: Minimum burst size.
687  *
688  * Describes immutable attributes of packet trap policers that drivers register
689  * with devlink.
690  */
691 struct devlink_trap_policer {
692 	u32 id;
693 	u64 init_rate;
694 	u64 init_burst;
695 	u64 max_rate;
696 	u64 min_rate;
697 	u64 max_burst;
698 	u64 min_burst;
699 };
700 
701 /**
702  * struct devlink_trap_group - Immutable packet trap group attributes.
703  * @name: Trap group name.
704  * @id: Trap group identifier.
705  * @generic: Whether the trap group is generic or not.
706  * @init_policer_id: Initial policer identifier.
707  *
708  * Describes immutable attributes of packet trap groups that drivers register
709  * with devlink.
710  */
711 struct devlink_trap_group {
712 	const char *name;
713 	u16 id;
714 	bool generic;
715 	u32 init_policer_id;
716 };
717 
718 #define DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT	BIT(0)
719 #define DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE	BIT(1)
720 
721 /**
722  * struct devlink_trap - Immutable packet trap attributes.
723  * @type: Trap type.
724  * @init_action: Initial trap action.
725  * @generic: Whether the trap is generic or not.
726  * @id: Trap identifier.
727  * @name: Trap name.
728  * @init_group_id: Initial group identifier.
729  * @metadata_cap: Metadata types that can be provided by the trap.
730  *
731  * Describes immutable attributes of packet traps that drivers register with
732  * devlink.
733  */
734 struct devlink_trap {
735 	enum devlink_trap_type type;
736 	enum devlink_trap_action init_action;
737 	bool generic;
738 	u16 id;
739 	const char *name;
740 	u16 init_group_id;
741 	u32 metadata_cap;
742 };
743 
744 /* All traps must be documented in
745  * Documentation/networking/devlink/devlink-trap.rst
746  */
747 enum devlink_trap_generic_id {
748 	DEVLINK_TRAP_GENERIC_ID_SMAC_MC,
749 	DEVLINK_TRAP_GENERIC_ID_VLAN_TAG_MISMATCH,
750 	DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER,
751 	DEVLINK_TRAP_GENERIC_ID_INGRESS_STP_FILTER,
752 	DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
753 	DEVLINK_TRAP_GENERIC_ID_PORT_LOOPBACK_FILTER,
754 	DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
755 	DEVLINK_TRAP_GENERIC_ID_TTL_ERROR,
756 	DEVLINK_TRAP_GENERIC_ID_TAIL_DROP,
757 	DEVLINK_TRAP_GENERIC_ID_NON_IP_PACKET,
758 	DEVLINK_TRAP_GENERIC_ID_UC_DIP_MC_DMAC,
759 	DEVLINK_TRAP_GENERIC_ID_DIP_LB,
760 	DEVLINK_TRAP_GENERIC_ID_SIP_MC,
761 	DEVLINK_TRAP_GENERIC_ID_SIP_LB,
762 	DEVLINK_TRAP_GENERIC_ID_CORRUPTED_IP_HDR,
763 	DEVLINK_TRAP_GENERIC_ID_IPV4_SIP_BC,
764 	DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_RESERVED_SCOPE,
765 	DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE,
766 	DEVLINK_TRAP_GENERIC_ID_MTU_ERROR,
767 	DEVLINK_TRAP_GENERIC_ID_UNRESOLVED_NEIGH,
768 	DEVLINK_TRAP_GENERIC_ID_RPF,
769 	DEVLINK_TRAP_GENERIC_ID_REJECT_ROUTE,
770 	DEVLINK_TRAP_GENERIC_ID_IPV4_LPM_UNICAST_MISS,
771 	DEVLINK_TRAP_GENERIC_ID_IPV6_LPM_UNICAST_MISS,
772 	DEVLINK_TRAP_GENERIC_ID_NON_ROUTABLE,
773 	DEVLINK_TRAP_GENERIC_ID_DECAP_ERROR,
774 	DEVLINK_TRAP_GENERIC_ID_OVERLAY_SMAC_MC,
775 	DEVLINK_TRAP_GENERIC_ID_INGRESS_FLOW_ACTION_DROP,
776 	DEVLINK_TRAP_GENERIC_ID_EGRESS_FLOW_ACTION_DROP,
777 	DEVLINK_TRAP_GENERIC_ID_STP,
778 	DEVLINK_TRAP_GENERIC_ID_LACP,
779 	DEVLINK_TRAP_GENERIC_ID_LLDP,
780 	DEVLINK_TRAP_GENERIC_ID_IGMP_QUERY,
781 	DEVLINK_TRAP_GENERIC_ID_IGMP_V1_REPORT,
782 	DEVLINK_TRAP_GENERIC_ID_IGMP_V2_REPORT,
783 	DEVLINK_TRAP_GENERIC_ID_IGMP_V3_REPORT,
784 	DEVLINK_TRAP_GENERIC_ID_IGMP_V2_LEAVE,
785 	DEVLINK_TRAP_GENERIC_ID_MLD_QUERY,
786 	DEVLINK_TRAP_GENERIC_ID_MLD_V1_REPORT,
787 	DEVLINK_TRAP_GENERIC_ID_MLD_V2_REPORT,
788 	DEVLINK_TRAP_GENERIC_ID_MLD_V1_DONE,
789 	DEVLINK_TRAP_GENERIC_ID_IPV4_DHCP,
790 	DEVLINK_TRAP_GENERIC_ID_IPV6_DHCP,
791 	DEVLINK_TRAP_GENERIC_ID_ARP_REQUEST,
792 	DEVLINK_TRAP_GENERIC_ID_ARP_RESPONSE,
793 	DEVLINK_TRAP_GENERIC_ID_ARP_OVERLAY,
794 	DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_SOLICIT,
795 	DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_ADVERT,
796 	DEVLINK_TRAP_GENERIC_ID_IPV4_BFD,
797 	DEVLINK_TRAP_GENERIC_ID_IPV6_BFD,
798 	DEVLINK_TRAP_GENERIC_ID_IPV4_OSPF,
799 	DEVLINK_TRAP_GENERIC_ID_IPV6_OSPF,
800 	DEVLINK_TRAP_GENERIC_ID_IPV4_BGP,
801 	DEVLINK_TRAP_GENERIC_ID_IPV6_BGP,
802 	DEVLINK_TRAP_GENERIC_ID_IPV4_VRRP,
803 	DEVLINK_TRAP_GENERIC_ID_IPV6_VRRP,
804 	DEVLINK_TRAP_GENERIC_ID_IPV4_PIM,
805 	DEVLINK_TRAP_GENERIC_ID_IPV6_PIM,
806 	DEVLINK_TRAP_GENERIC_ID_UC_LB,
807 	DEVLINK_TRAP_GENERIC_ID_LOCAL_ROUTE,
808 	DEVLINK_TRAP_GENERIC_ID_EXTERNAL_ROUTE,
809 	DEVLINK_TRAP_GENERIC_ID_IPV6_UC_DIP_LINK_LOCAL_SCOPE,
810 	DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_NODES,
811 	DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_ROUTERS,
812 	DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_SOLICIT,
813 	DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ADVERT,
814 	DEVLINK_TRAP_GENERIC_ID_IPV6_REDIRECT,
815 	DEVLINK_TRAP_GENERIC_ID_IPV4_ROUTER_ALERT,
816 	DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ALERT,
817 	DEVLINK_TRAP_GENERIC_ID_PTP_EVENT,
818 	DEVLINK_TRAP_GENERIC_ID_PTP_GENERAL,
819 	DEVLINK_TRAP_GENERIC_ID_FLOW_ACTION_SAMPLE,
820 	DEVLINK_TRAP_GENERIC_ID_FLOW_ACTION_TRAP,
821 	DEVLINK_TRAP_GENERIC_ID_EARLY_DROP,
822 	DEVLINK_TRAP_GENERIC_ID_VXLAN_PARSING,
823 	DEVLINK_TRAP_GENERIC_ID_LLC_SNAP_PARSING,
824 	DEVLINK_TRAP_GENERIC_ID_VLAN_PARSING,
825 	DEVLINK_TRAP_GENERIC_ID_PPPOE_PPP_PARSING,
826 	DEVLINK_TRAP_GENERIC_ID_MPLS_PARSING,
827 	DEVLINK_TRAP_GENERIC_ID_ARP_PARSING,
828 	DEVLINK_TRAP_GENERIC_ID_IP_1_PARSING,
829 	DEVLINK_TRAP_GENERIC_ID_IP_N_PARSING,
830 	DEVLINK_TRAP_GENERIC_ID_GRE_PARSING,
831 	DEVLINK_TRAP_GENERIC_ID_UDP_PARSING,
832 	DEVLINK_TRAP_GENERIC_ID_TCP_PARSING,
833 	DEVLINK_TRAP_GENERIC_ID_IPSEC_PARSING,
834 	DEVLINK_TRAP_GENERIC_ID_SCTP_PARSING,
835 	DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING,
836 	DEVLINK_TRAP_GENERIC_ID_GTP_PARSING,
837 	DEVLINK_TRAP_GENERIC_ID_ESP_PARSING,
838 	DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_NEXTHOP,
839 
840 	/* Add new generic trap IDs above */
841 	__DEVLINK_TRAP_GENERIC_ID_MAX,
842 	DEVLINK_TRAP_GENERIC_ID_MAX = __DEVLINK_TRAP_GENERIC_ID_MAX - 1,
843 };
844 
845 /* All trap groups must be documented in
846  * Documentation/networking/devlink/devlink-trap.rst
847  */
848 enum devlink_trap_group_generic_id {
849 	DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS,
850 	DEVLINK_TRAP_GROUP_GENERIC_ID_L3_DROPS,
851 	DEVLINK_TRAP_GROUP_GENERIC_ID_L3_EXCEPTIONS,
852 	DEVLINK_TRAP_GROUP_GENERIC_ID_BUFFER_DROPS,
853 	DEVLINK_TRAP_GROUP_GENERIC_ID_TUNNEL_DROPS,
854 	DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_DROPS,
855 	DEVLINK_TRAP_GROUP_GENERIC_ID_STP,
856 	DEVLINK_TRAP_GROUP_GENERIC_ID_LACP,
857 	DEVLINK_TRAP_GROUP_GENERIC_ID_LLDP,
858 	DEVLINK_TRAP_GROUP_GENERIC_ID_MC_SNOOPING,
859 	DEVLINK_TRAP_GROUP_GENERIC_ID_DHCP,
860 	DEVLINK_TRAP_GROUP_GENERIC_ID_NEIGH_DISCOVERY,
861 	DEVLINK_TRAP_GROUP_GENERIC_ID_BFD,
862 	DEVLINK_TRAP_GROUP_GENERIC_ID_OSPF,
863 	DEVLINK_TRAP_GROUP_GENERIC_ID_BGP,
864 	DEVLINK_TRAP_GROUP_GENERIC_ID_VRRP,
865 	DEVLINK_TRAP_GROUP_GENERIC_ID_PIM,
866 	DEVLINK_TRAP_GROUP_GENERIC_ID_UC_LB,
867 	DEVLINK_TRAP_GROUP_GENERIC_ID_LOCAL_DELIVERY,
868 	DEVLINK_TRAP_GROUP_GENERIC_ID_EXTERNAL_DELIVERY,
869 	DEVLINK_TRAP_GROUP_GENERIC_ID_IPV6,
870 	DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_EVENT,
871 	DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_GENERAL,
872 	DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_SAMPLE,
873 	DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_TRAP,
874 	DEVLINK_TRAP_GROUP_GENERIC_ID_PARSER_ERROR_DROPS,
875 
876 	/* Add new generic trap group IDs above */
877 	__DEVLINK_TRAP_GROUP_GENERIC_ID_MAX,
878 	DEVLINK_TRAP_GROUP_GENERIC_ID_MAX =
879 		__DEVLINK_TRAP_GROUP_GENERIC_ID_MAX - 1,
880 };
881 
882 #define DEVLINK_TRAP_GENERIC_NAME_SMAC_MC \
883 	"source_mac_is_multicast"
884 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_TAG_MISMATCH \
885 	"vlan_tag_mismatch"
886 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_VLAN_FILTER \
887 	"ingress_vlan_filter"
888 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_STP_FILTER \
889 	"ingress_spanning_tree_filter"
890 #define DEVLINK_TRAP_GENERIC_NAME_EMPTY_TX_LIST \
891 	"port_list_is_empty"
892 #define DEVLINK_TRAP_GENERIC_NAME_PORT_LOOPBACK_FILTER \
893 	"port_loopback_filter"
894 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_ROUTE \
895 	"blackhole_route"
896 #define DEVLINK_TRAP_GENERIC_NAME_TTL_ERROR \
897 	"ttl_value_is_too_small"
898 #define DEVLINK_TRAP_GENERIC_NAME_TAIL_DROP \
899 	"tail_drop"
900 #define DEVLINK_TRAP_GENERIC_NAME_NON_IP_PACKET \
901 	"non_ip"
902 #define DEVLINK_TRAP_GENERIC_NAME_UC_DIP_MC_DMAC \
903 	"uc_dip_over_mc_dmac"
904 #define DEVLINK_TRAP_GENERIC_NAME_DIP_LB \
905 	"dip_is_loopback_address"
906 #define DEVLINK_TRAP_GENERIC_NAME_SIP_MC \
907 	"sip_is_mc"
908 #define DEVLINK_TRAP_GENERIC_NAME_SIP_LB \
909 	"sip_is_loopback_address"
910 #define DEVLINK_TRAP_GENERIC_NAME_CORRUPTED_IP_HDR \
911 	"ip_header_corrupted"
912 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_SIP_BC \
913 	"ipv4_sip_is_limited_bc"
914 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_RESERVED_SCOPE \
915 	"ipv6_mc_dip_reserved_scope"
916 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE \
917 	"ipv6_mc_dip_interface_local_scope"
918 #define DEVLINK_TRAP_GENERIC_NAME_MTU_ERROR \
919 	"mtu_value_is_too_small"
920 #define DEVLINK_TRAP_GENERIC_NAME_UNRESOLVED_NEIGH \
921 	"unresolved_neigh"
922 #define DEVLINK_TRAP_GENERIC_NAME_RPF \
923 	"mc_reverse_path_forwarding"
924 #define DEVLINK_TRAP_GENERIC_NAME_REJECT_ROUTE \
925 	"reject_route"
926 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_LPM_UNICAST_MISS \
927 	"ipv4_lpm_miss"
928 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_LPM_UNICAST_MISS \
929 	"ipv6_lpm_miss"
930 #define DEVLINK_TRAP_GENERIC_NAME_NON_ROUTABLE \
931 	"non_routable_packet"
932 #define DEVLINK_TRAP_GENERIC_NAME_DECAP_ERROR \
933 	"decap_error"
934 #define DEVLINK_TRAP_GENERIC_NAME_OVERLAY_SMAC_MC \
935 	"overlay_smac_is_mc"
936 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_FLOW_ACTION_DROP \
937 	"ingress_flow_action_drop"
938 #define DEVLINK_TRAP_GENERIC_NAME_EGRESS_FLOW_ACTION_DROP \
939 	"egress_flow_action_drop"
940 #define DEVLINK_TRAP_GENERIC_NAME_STP \
941 	"stp"
942 #define DEVLINK_TRAP_GENERIC_NAME_LACP \
943 	"lacp"
944 #define DEVLINK_TRAP_GENERIC_NAME_LLDP \
945 	"lldp"
946 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_QUERY \
947 	"igmp_query"
948 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V1_REPORT \
949 	"igmp_v1_report"
950 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V2_REPORT \
951 	"igmp_v2_report"
952 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V3_REPORT \
953 	"igmp_v3_report"
954 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V2_LEAVE \
955 	"igmp_v2_leave"
956 #define DEVLINK_TRAP_GENERIC_NAME_MLD_QUERY \
957 	"mld_query"
958 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_REPORT \
959 	"mld_v1_report"
960 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V2_REPORT \
961 	"mld_v2_report"
962 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_DONE \
963 	"mld_v1_done"
964 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_DHCP \
965 	"ipv4_dhcp"
966 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DHCP \
967 	"ipv6_dhcp"
968 #define DEVLINK_TRAP_GENERIC_NAME_ARP_REQUEST \
969 	"arp_request"
970 #define DEVLINK_TRAP_GENERIC_NAME_ARP_RESPONSE \
971 	"arp_response"
972 #define DEVLINK_TRAP_GENERIC_NAME_ARP_OVERLAY \
973 	"arp_overlay"
974 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_SOLICIT \
975 	"ipv6_neigh_solicit"
976 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_ADVERT \
977 	"ipv6_neigh_advert"
978 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_BFD \
979 	"ipv4_bfd"
980 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_BFD \
981 	"ipv6_bfd"
982 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_OSPF \
983 	"ipv4_ospf"
984 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_OSPF \
985 	"ipv6_ospf"
986 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_BGP \
987 	"ipv4_bgp"
988 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_BGP \
989 	"ipv6_bgp"
990 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_VRRP \
991 	"ipv4_vrrp"
992 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_VRRP \
993 	"ipv6_vrrp"
994 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_PIM \
995 	"ipv4_pim"
996 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_PIM \
997 	"ipv6_pim"
998 #define DEVLINK_TRAP_GENERIC_NAME_UC_LB \
999 	"uc_loopback"
1000 #define DEVLINK_TRAP_GENERIC_NAME_LOCAL_ROUTE \
1001 	"local_route"
1002 #define DEVLINK_TRAP_GENERIC_NAME_EXTERNAL_ROUTE \
1003 	"external_route"
1004 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_UC_DIP_LINK_LOCAL_SCOPE \
1005 	"ipv6_uc_dip_link_local_scope"
1006 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_NODES \
1007 	"ipv6_dip_all_nodes"
1008 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_ROUTERS \
1009 	"ipv6_dip_all_routers"
1010 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_SOLICIT \
1011 	"ipv6_router_solicit"
1012 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ADVERT \
1013 	"ipv6_router_advert"
1014 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_REDIRECT \
1015 	"ipv6_redirect"
1016 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_ROUTER_ALERT \
1017 	"ipv4_router_alert"
1018 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ALERT \
1019 	"ipv6_router_alert"
1020 #define DEVLINK_TRAP_GENERIC_NAME_PTP_EVENT \
1021 	"ptp_event"
1022 #define DEVLINK_TRAP_GENERIC_NAME_PTP_GENERAL \
1023 	"ptp_general"
1024 #define DEVLINK_TRAP_GENERIC_NAME_FLOW_ACTION_SAMPLE \
1025 	"flow_action_sample"
1026 #define DEVLINK_TRAP_GENERIC_NAME_FLOW_ACTION_TRAP \
1027 	"flow_action_trap"
1028 #define DEVLINK_TRAP_GENERIC_NAME_EARLY_DROP \
1029 	"early_drop"
1030 #define DEVLINK_TRAP_GENERIC_NAME_VXLAN_PARSING \
1031 	"vxlan_parsing"
1032 #define DEVLINK_TRAP_GENERIC_NAME_LLC_SNAP_PARSING \
1033 	"llc_snap_parsing"
1034 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_PARSING \
1035 	"vlan_parsing"
1036 #define DEVLINK_TRAP_GENERIC_NAME_PPPOE_PPP_PARSING \
1037 	"pppoe_ppp_parsing"
1038 #define DEVLINK_TRAP_GENERIC_NAME_MPLS_PARSING \
1039 	"mpls_parsing"
1040 #define DEVLINK_TRAP_GENERIC_NAME_ARP_PARSING \
1041 	"arp_parsing"
1042 #define DEVLINK_TRAP_GENERIC_NAME_IP_1_PARSING \
1043 	"ip_1_parsing"
1044 #define DEVLINK_TRAP_GENERIC_NAME_IP_N_PARSING \
1045 	"ip_n_parsing"
1046 #define DEVLINK_TRAP_GENERIC_NAME_GRE_PARSING \
1047 	"gre_parsing"
1048 #define DEVLINK_TRAP_GENERIC_NAME_UDP_PARSING \
1049 	"udp_parsing"
1050 #define DEVLINK_TRAP_GENERIC_NAME_TCP_PARSING \
1051 	"tcp_parsing"
1052 #define DEVLINK_TRAP_GENERIC_NAME_IPSEC_PARSING \
1053 	"ipsec_parsing"
1054 #define DEVLINK_TRAP_GENERIC_NAME_SCTP_PARSING \
1055 	"sctp_parsing"
1056 #define DEVLINK_TRAP_GENERIC_NAME_DCCP_PARSING \
1057 	"dccp_parsing"
1058 #define DEVLINK_TRAP_GENERIC_NAME_GTP_PARSING \
1059 	"gtp_parsing"
1060 #define DEVLINK_TRAP_GENERIC_NAME_ESP_PARSING \
1061 	"esp_parsing"
1062 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_NEXTHOP \
1063 	"blackhole_nexthop"
1064 
1065 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
1066 	"l2_drops"
1067 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_DROPS \
1068 	"l3_drops"
1069 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_EXCEPTIONS \
1070 	"l3_exceptions"
1071 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BUFFER_DROPS \
1072 	"buffer_drops"
1073 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_TUNNEL_DROPS \
1074 	"tunnel_drops"
1075 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_DROPS \
1076 	"acl_drops"
1077 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_STP \
1078 	"stp"
1079 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LACP \
1080 	"lacp"
1081 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LLDP \
1082 	"lldp"
1083 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_MC_SNOOPING  \
1084 	"mc_snooping"
1085 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_DHCP \
1086 	"dhcp"
1087 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_NEIGH_DISCOVERY \
1088 	"neigh_discovery"
1089 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BFD \
1090 	"bfd"
1091 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_OSPF \
1092 	"ospf"
1093 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BGP \
1094 	"bgp"
1095 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_VRRP \
1096 	"vrrp"
1097 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PIM \
1098 	"pim"
1099 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_UC_LB \
1100 	"uc_loopback"
1101 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LOCAL_DELIVERY \
1102 	"local_delivery"
1103 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_EXTERNAL_DELIVERY \
1104 	"external_delivery"
1105 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_IPV6 \
1106 	"ipv6"
1107 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_EVENT \
1108 	"ptp_event"
1109 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_GENERAL \
1110 	"ptp_general"
1111 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_SAMPLE \
1112 	"acl_sample"
1113 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_TRAP \
1114 	"acl_trap"
1115 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PARSER_ERROR_DROPS \
1116 	"parser_error_drops"
1117 
1118 #define DEVLINK_TRAP_GENERIC(_type, _init_action, _id, _group_id,	      \
1119 			     _metadata_cap)				      \
1120 	{								      \
1121 		.type = DEVLINK_TRAP_TYPE_##_type,			      \
1122 		.init_action = DEVLINK_TRAP_ACTION_##_init_action,	      \
1123 		.generic = true,					      \
1124 		.id = DEVLINK_TRAP_GENERIC_ID_##_id,			      \
1125 		.name = DEVLINK_TRAP_GENERIC_NAME_##_id,		      \
1126 		.init_group_id = _group_id,				      \
1127 		.metadata_cap = _metadata_cap,				      \
1128 	}
1129 
1130 #define DEVLINK_TRAP_DRIVER(_type, _init_action, _id, _name, _group_id,	      \
1131 			    _metadata_cap)				      \
1132 	{								      \
1133 		.type = DEVLINK_TRAP_TYPE_##_type,			      \
1134 		.init_action = DEVLINK_TRAP_ACTION_##_init_action,	      \
1135 		.generic = false,					      \
1136 		.id = _id,						      \
1137 		.name = _name,						      \
1138 		.init_group_id = _group_id,				      \
1139 		.metadata_cap = _metadata_cap,				      \
1140 	}
1141 
1142 #define DEVLINK_TRAP_GROUP_GENERIC(_id, _policer_id)			      \
1143 	{								      \
1144 		.name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id,		      \
1145 		.id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id,		      \
1146 		.generic = true,					      \
1147 		.init_policer_id = _policer_id,				      \
1148 	}
1149 
1150 #define DEVLINK_TRAP_POLICER(_id, _rate, _burst, _max_rate, _min_rate,	      \
1151 			     _max_burst, _min_burst)			      \
1152 	{								      \
1153 		.id = _id,						      \
1154 		.init_rate = _rate,					      \
1155 		.init_burst = _burst,					      \
1156 		.max_rate = _max_rate,					      \
1157 		.min_rate = _min_rate,					      \
1158 		.max_burst = _max_burst,				      \
1159 		.min_burst = _min_burst,				      \
1160 	}
1161 
1162 struct devlink_ops {
1163 	/**
1164 	 * @supported_flash_update_params:
1165 	 * mask of parameters supported by the driver's .flash_update
1166 	 * implemementation.
1167 	 */
1168 	u32 supported_flash_update_params;
1169 	unsigned long reload_actions;
1170 	unsigned long reload_limits;
1171 	int (*reload_down)(struct devlink *devlink, bool netns_change,
1172 			   enum devlink_reload_action action,
1173 			   enum devlink_reload_limit limit,
1174 			   struct netlink_ext_ack *extack);
1175 	int (*reload_up)(struct devlink *devlink, enum devlink_reload_action action,
1176 			 enum devlink_reload_limit limit, u32 *actions_performed,
1177 			 struct netlink_ext_ack *extack);
1178 	int (*port_type_set)(struct devlink_port *devlink_port,
1179 			     enum devlink_port_type port_type);
1180 	int (*port_split)(struct devlink *devlink, unsigned int port_index,
1181 			  unsigned int count, struct netlink_ext_ack *extack);
1182 	int (*port_unsplit)(struct devlink *devlink, unsigned int port_index,
1183 			    struct netlink_ext_ack *extack);
1184 	int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
1185 			   u16 pool_index,
1186 			   struct devlink_sb_pool_info *pool_info);
1187 	int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
1188 			   u16 pool_index, u32 size,
1189 			   enum devlink_sb_threshold_type threshold_type,
1190 			   struct netlink_ext_ack *extack);
1191 	int (*sb_port_pool_get)(struct devlink_port *devlink_port,
1192 				unsigned int sb_index, u16 pool_index,
1193 				u32 *p_threshold);
1194 	int (*sb_port_pool_set)(struct devlink_port *devlink_port,
1195 				unsigned int sb_index, u16 pool_index,
1196 				u32 threshold, struct netlink_ext_ack *extack);
1197 	int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
1198 				   unsigned int sb_index,
1199 				   u16 tc_index,
1200 				   enum devlink_sb_pool_type pool_type,
1201 				   u16 *p_pool_index, u32 *p_threshold);
1202 	int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
1203 				   unsigned int sb_index,
1204 				   u16 tc_index,
1205 				   enum devlink_sb_pool_type pool_type,
1206 				   u16 pool_index, u32 threshold,
1207 				   struct netlink_ext_ack *extack);
1208 	int (*sb_occ_snapshot)(struct devlink *devlink,
1209 			       unsigned int sb_index);
1210 	int (*sb_occ_max_clear)(struct devlink *devlink,
1211 				unsigned int sb_index);
1212 	int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
1213 				    unsigned int sb_index, u16 pool_index,
1214 				    u32 *p_cur, u32 *p_max);
1215 	int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
1216 				       unsigned int sb_index,
1217 				       u16 tc_index,
1218 				       enum devlink_sb_pool_type pool_type,
1219 				       u32 *p_cur, u32 *p_max);
1220 
1221 	int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
1222 	int (*eswitch_mode_set)(struct devlink *devlink, u16 mode,
1223 				struct netlink_ext_ack *extack);
1224 	int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
1225 	int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode,
1226 				       struct netlink_ext_ack *extack);
1227 	int (*eswitch_encap_mode_get)(struct devlink *devlink,
1228 				      enum devlink_eswitch_encap_mode *p_encap_mode);
1229 	int (*eswitch_encap_mode_set)(struct devlink *devlink,
1230 				      enum devlink_eswitch_encap_mode encap_mode,
1231 				      struct netlink_ext_ack *extack);
1232 	int (*info_get)(struct devlink *devlink, struct devlink_info_req *req,
1233 			struct netlink_ext_ack *extack);
1234 	/**
1235 	 * @flash_update: Device flash update function
1236 	 *
1237 	 * Used to perform a flash update for the device. The set of
1238 	 * parameters supported by the driver should be set in
1239 	 * supported_flash_update_params.
1240 	 */
1241 	int (*flash_update)(struct devlink *devlink,
1242 			    struct devlink_flash_update_params *params,
1243 			    struct netlink_ext_ack *extack);
1244 	/**
1245 	 * @trap_init: Trap initialization function.
1246 	 *
1247 	 * Should be used by device drivers to initialize the trap in the
1248 	 * underlying device. Drivers should also store the provided trap
1249 	 * context, so that they could efficiently pass it to
1250 	 * devlink_trap_report() when the trap is triggered.
1251 	 */
1252 	int (*trap_init)(struct devlink *devlink,
1253 			 const struct devlink_trap *trap, void *trap_ctx);
1254 	/**
1255 	 * @trap_fini: Trap de-initialization function.
1256 	 *
1257 	 * Should be used by device drivers to de-initialize the trap in the
1258 	 * underlying device.
1259 	 */
1260 	void (*trap_fini)(struct devlink *devlink,
1261 			  const struct devlink_trap *trap, void *trap_ctx);
1262 	/**
1263 	 * @trap_action_set: Trap action set function.
1264 	 */
1265 	int (*trap_action_set)(struct devlink *devlink,
1266 			       const struct devlink_trap *trap,
1267 			       enum devlink_trap_action action,
1268 			       struct netlink_ext_ack *extack);
1269 	/**
1270 	 * @trap_group_init: Trap group initialization function.
1271 	 *
1272 	 * Should be used by device drivers to initialize the trap group in the
1273 	 * underlying device.
1274 	 */
1275 	int (*trap_group_init)(struct devlink *devlink,
1276 			       const struct devlink_trap_group *group);
1277 	/**
1278 	 * @trap_group_set: Trap group parameters set function.
1279 	 *
1280 	 * Note: @policer can be NULL when a policer is being unbound from
1281 	 * @group.
1282 	 */
1283 	int (*trap_group_set)(struct devlink *devlink,
1284 			      const struct devlink_trap_group *group,
1285 			      const struct devlink_trap_policer *policer,
1286 			      struct netlink_ext_ack *extack);
1287 	/**
1288 	 * @trap_group_action_set: Trap group action set function.
1289 	 *
1290 	 * If this callback is populated, it will take precedence over looping
1291 	 * over all traps in a group and calling .trap_action_set().
1292 	 */
1293 	int (*trap_group_action_set)(struct devlink *devlink,
1294 				     const struct devlink_trap_group *group,
1295 				     enum devlink_trap_action action,
1296 				     struct netlink_ext_ack *extack);
1297 	/**
1298 	 * @trap_policer_init: Trap policer initialization function.
1299 	 *
1300 	 * Should be used by device drivers to initialize the trap policer in
1301 	 * the underlying device.
1302 	 */
1303 	int (*trap_policer_init)(struct devlink *devlink,
1304 				 const struct devlink_trap_policer *policer);
1305 	/**
1306 	 * @trap_policer_fini: Trap policer de-initialization function.
1307 	 *
1308 	 * Should be used by device drivers to de-initialize the trap policer
1309 	 * in the underlying device.
1310 	 */
1311 	void (*trap_policer_fini)(struct devlink *devlink,
1312 				  const struct devlink_trap_policer *policer);
1313 	/**
1314 	 * @trap_policer_set: Trap policer parameters set function.
1315 	 */
1316 	int (*trap_policer_set)(struct devlink *devlink,
1317 				const struct devlink_trap_policer *policer,
1318 				u64 rate, u64 burst,
1319 				struct netlink_ext_ack *extack);
1320 	/**
1321 	 * @trap_policer_counter_get: Trap policer counter get function.
1322 	 *
1323 	 * Should be used by device drivers to report number of packets dropped
1324 	 * by the policer.
1325 	 */
1326 	int (*trap_policer_counter_get)(struct devlink *devlink,
1327 					const struct devlink_trap_policer *policer,
1328 					u64 *p_drops);
1329 	/**
1330 	 * @port_function_hw_addr_get: Port function's hardware address get function.
1331 	 *
1332 	 * Should be used by device drivers to report the hardware address of a function managed
1333 	 * by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
1334 	 * function handling for a particular port.
1335 	 *
1336 	 * Note: @extack can be NULL when port notifier queries the port function.
1337 	 */
1338 	int (*port_function_hw_addr_get)(struct devlink *devlink, struct devlink_port *port,
1339 					 u8 *hw_addr, int *hw_addr_len,
1340 					 struct netlink_ext_ack *extack);
1341 	/**
1342 	 * @port_function_hw_addr_set: Port function's hardware address set function.
1343 	 *
1344 	 * Should be used by device drivers to set the hardware address of a function managed
1345 	 * by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
1346 	 * function handling for a particular port.
1347 	 */
1348 	int (*port_function_hw_addr_set)(struct devlink *devlink, struct devlink_port *port,
1349 					 const u8 *hw_addr, int hw_addr_len,
1350 					 struct netlink_ext_ack *extack);
1351 };
1352 
1353 static inline void *devlink_priv(struct devlink *devlink)
1354 {
1355 	BUG_ON(!devlink);
1356 	return &devlink->priv;
1357 }
1358 
1359 static inline struct devlink *priv_to_devlink(void *priv)
1360 {
1361 	BUG_ON(!priv);
1362 	return container_of(priv, struct devlink, priv);
1363 }
1364 
1365 static inline struct devlink_port *
1366 netdev_to_devlink_port(struct net_device *dev)
1367 {
1368 	if (dev->netdev_ops->ndo_get_devlink_port)
1369 		return dev->netdev_ops->ndo_get_devlink_port(dev);
1370 	return NULL;
1371 }
1372 
1373 static inline struct devlink *netdev_to_devlink(struct net_device *dev)
1374 {
1375 	struct devlink_port *devlink_port = netdev_to_devlink_port(dev);
1376 
1377 	if (devlink_port)
1378 		return devlink_port->devlink;
1379 	return NULL;
1380 }
1381 
1382 struct ib_device;
1383 
1384 struct net *devlink_net(const struct devlink *devlink);
1385 void devlink_net_set(struct devlink *devlink, struct net *net);
1386 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
1387 int devlink_register(struct devlink *devlink, struct device *dev);
1388 void devlink_unregister(struct devlink *devlink);
1389 void devlink_reload_enable(struct devlink *devlink);
1390 void devlink_reload_disable(struct devlink *devlink);
1391 void devlink_free(struct devlink *devlink);
1392 int devlink_port_register(struct devlink *devlink,
1393 			  struct devlink_port *devlink_port,
1394 			  unsigned int port_index);
1395 void devlink_port_unregister(struct devlink_port *devlink_port);
1396 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
1397 			       struct net_device *netdev);
1398 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
1399 			      struct ib_device *ibdev);
1400 void devlink_port_type_clear(struct devlink_port *devlink_port);
1401 void devlink_port_attrs_set(struct devlink_port *devlink_port,
1402 			    struct devlink_port_attrs *devlink_port_attrs);
1403 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
1404 				   u16 pf, bool external);
1405 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
1406 				   u16 pf, u16 vf, bool external);
1407 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
1408 			u32 size, u16 ingress_pools_count,
1409 			u16 egress_pools_count, u16 ingress_tc_count,
1410 			u16 egress_tc_count);
1411 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
1412 int devlink_dpipe_table_register(struct devlink *devlink,
1413 				 const char *table_name,
1414 				 struct devlink_dpipe_table_ops *table_ops,
1415 				 void *priv, bool counter_control_extern);
1416 void devlink_dpipe_table_unregister(struct devlink *devlink,
1417 				    const char *table_name);
1418 int devlink_dpipe_headers_register(struct devlink *devlink,
1419 				   struct devlink_dpipe_headers *dpipe_headers);
1420 void devlink_dpipe_headers_unregister(struct devlink *devlink);
1421 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
1422 					 const char *table_name);
1423 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
1424 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
1425 				   struct devlink_dpipe_entry *entry);
1426 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
1427 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry);
1428 int devlink_dpipe_action_put(struct sk_buff *skb,
1429 			     struct devlink_dpipe_action *action);
1430 int devlink_dpipe_match_put(struct sk_buff *skb,
1431 			    struct devlink_dpipe_match *match);
1432 extern struct devlink_dpipe_header devlink_dpipe_header_ethernet;
1433 extern struct devlink_dpipe_header devlink_dpipe_header_ipv4;
1434 extern struct devlink_dpipe_header devlink_dpipe_header_ipv6;
1435 
1436 int devlink_resource_register(struct devlink *devlink,
1437 			      const char *resource_name,
1438 			      u64 resource_size,
1439 			      u64 resource_id,
1440 			      u64 parent_resource_id,
1441 			      const struct devlink_resource_size_params *size_params);
1442 void devlink_resources_unregister(struct devlink *devlink,
1443 				  struct devlink_resource *resource);
1444 int devlink_resource_size_get(struct devlink *devlink,
1445 			      u64 resource_id,
1446 			      u64 *p_resource_size);
1447 int devlink_dpipe_table_resource_set(struct devlink *devlink,
1448 				     const char *table_name, u64 resource_id,
1449 				     u64 resource_units);
1450 void devlink_resource_occ_get_register(struct devlink *devlink,
1451 				       u64 resource_id,
1452 				       devlink_resource_occ_get_t *occ_get,
1453 				       void *occ_get_priv);
1454 void devlink_resource_occ_get_unregister(struct devlink *devlink,
1455 					 u64 resource_id);
1456 int devlink_params_register(struct devlink *devlink,
1457 			    const struct devlink_param *params,
1458 			    size_t params_count);
1459 void devlink_params_unregister(struct devlink *devlink,
1460 			       const struct devlink_param *params,
1461 			       size_t params_count);
1462 void devlink_params_publish(struct devlink *devlink);
1463 void devlink_params_unpublish(struct devlink *devlink);
1464 int devlink_port_params_register(struct devlink_port *devlink_port,
1465 				 const struct devlink_param *params,
1466 				 size_t params_count);
1467 void devlink_port_params_unregister(struct devlink_port *devlink_port,
1468 				    const struct devlink_param *params,
1469 				    size_t params_count);
1470 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
1471 				       union devlink_param_value *init_val);
1472 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
1473 				       union devlink_param_value init_val);
1474 int
1475 devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
1476 					u32 param_id,
1477 					union devlink_param_value *init_val);
1478 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
1479 					    u32 param_id,
1480 					    union devlink_param_value init_val);
1481 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
1482 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
1483 				      u32 param_id);
1484 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
1485 				  const char *src);
1486 struct devlink_region *
1487 devlink_region_create(struct devlink *devlink,
1488 		      const struct devlink_region_ops *ops,
1489 		      u32 region_max_snapshots, u64 region_size);
1490 struct devlink_region *
1491 devlink_port_region_create(struct devlink_port *port,
1492 			   const struct devlink_port_region_ops *ops,
1493 			   u32 region_max_snapshots, u64 region_size);
1494 void devlink_region_destroy(struct devlink_region *region);
1495 void devlink_port_region_destroy(struct devlink_region *region);
1496 
1497 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id);
1498 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id);
1499 int devlink_region_snapshot_create(struct devlink_region *region,
1500 				   u8 *data, u32 snapshot_id);
1501 int devlink_info_serial_number_put(struct devlink_info_req *req,
1502 				   const char *sn);
1503 int devlink_info_driver_name_put(struct devlink_info_req *req,
1504 				 const char *name);
1505 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
1506 					 const char *bsn);
1507 int devlink_info_version_fixed_put(struct devlink_info_req *req,
1508 				   const char *version_name,
1509 				   const char *version_value);
1510 int devlink_info_version_stored_put(struct devlink_info_req *req,
1511 				    const char *version_name,
1512 				    const char *version_value);
1513 int devlink_info_version_running_put(struct devlink_info_req *req,
1514 				     const char *version_name,
1515 				     const char *version_value);
1516 
1517 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg);
1518 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg);
1519 
1520 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name);
1521 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg);
1522 
1523 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
1524 				     const char *name);
1525 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg);
1526 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
1527 					const char *name);
1528 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg);
1529 
1530 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value);
1531 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value);
1532 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value);
1533 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value);
1534 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value);
1535 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
1536 			    u16 value_len);
1537 
1538 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
1539 			       bool value);
1540 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
1541 			     u8 value);
1542 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
1543 			      u32 value);
1544 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
1545 			      u64 value);
1546 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
1547 				 const char *value);
1548 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
1549 				 const void *value, u32 value_len);
1550 
1551 struct devlink_health_reporter *
1552 devlink_health_reporter_create(struct devlink *devlink,
1553 			       const struct devlink_health_reporter_ops *ops,
1554 			       u64 graceful_period, void *priv);
1555 
1556 struct devlink_health_reporter *
1557 devlink_port_health_reporter_create(struct devlink_port *port,
1558 				    const struct devlink_health_reporter_ops *ops,
1559 				    u64 graceful_period, void *priv);
1560 
1561 void
1562 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter);
1563 
1564 void
1565 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter);
1566 
1567 void *
1568 devlink_health_reporter_priv(struct devlink_health_reporter *reporter);
1569 int devlink_health_report(struct devlink_health_reporter *reporter,
1570 			  const char *msg, void *priv_ctx);
1571 void
1572 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
1573 				     enum devlink_health_reporter_state state);
1574 void
1575 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter);
1576 
1577 bool devlink_is_reload_failed(const struct devlink *devlink);
1578 void devlink_remote_reload_actions_performed(struct devlink *devlink,
1579 					     enum devlink_reload_limit limit,
1580 					     u32 actions_performed);
1581 
1582 void devlink_flash_update_status_notify(struct devlink *devlink,
1583 					const char *status_msg,
1584 					const char *component,
1585 					unsigned long done,
1586 					unsigned long total);
1587 void devlink_flash_update_timeout_notify(struct devlink *devlink,
1588 					 const char *status_msg,
1589 					 const char *component,
1590 					 unsigned long timeout);
1591 
1592 int devlink_traps_register(struct devlink *devlink,
1593 			   const struct devlink_trap *traps,
1594 			   size_t traps_count, void *priv);
1595 void devlink_traps_unregister(struct devlink *devlink,
1596 			      const struct devlink_trap *traps,
1597 			      size_t traps_count);
1598 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
1599 			 void *trap_ctx, struct devlink_port *in_devlink_port,
1600 			 const struct flow_action_cookie *fa_cookie);
1601 void *devlink_trap_ctx_priv(void *trap_ctx);
1602 int devlink_trap_groups_register(struct devlink *devlink,
1603 				 const struct devlink_trap_group *groups,
1604 				 size_t groups_count);
1605 void devlink_trap_groups_unregister(struct devlink *devlink,
1606 				    const struct devlink_trap_group *groups,
1607 				    size_t groups_count);
1608 int
1609 devlink_trap_policers_register(struct devlink *devlink,
1610 			       const struct devlink_trap_policer *policers,
1611 			       size_t policers_count);
1612 void
1613 devlink_trap_policers_unregister(struct devlink *devlink,
1614 				 const struct devlink_trap_policer *policers,
1615 				 size_t policers_count);
1616 
1617 #if IS_ENABLED(CONFIG_NET_DEVLINK)
1618 
1619 void devlink_compat_running_version(struct net_device *dev,
1620 				    char *buf, size_t len);
1621 int devlink_compat_flash_update(struct net_device *dev, const char *file_name);
1622 int devlink_compat_phys_port_name_get(struct net_device *dev,
1623 				      char *name, size_t len);
1624 int devlink_compat_switch_id_get(struct net_device *dev,
1625 				 struct netdev_phys_item_id *ppid);
1626 
1627 #else
1628 
1629 static inline void
1630 devlink_compat_running_version(struct net_device *dev, char *buf, size_t len)
1631 {
1632 }
1633 
1634 static inline int
1635 devlink_compat_flash_update(struct net_device *dev, const char *file_name)
1636 {
1637 	return -EOPNOTSUPP;
1638 }
1639 
1640 static inline int
1641 devlink_compat_phys_port_name_get(struct net_device *dev,
1642 				  char *name, size_t len)
1643 {
1644 	return -EOPNOTSUPP;
1645 }
1646 
1647 static inline int
1648 devlink_compat_switch_id_get(struct net_device *dev,
1649 			     struct netdev_phys_item_id *ppid)
1650 {
1651 	return -EOPNOTSUPP;
1652 }
1653 
1654 #endif
1655 
1656 #endif /* _NET_DEVLINK_H_ */
1657