xref: /openbmc/linux/include/net/devlink.h (revision 70a59dd8)
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 
23 #define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
24 	(__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
25 
26 struct devlink_dev_stats {
27 	u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
28 	u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
29 };
30 
31 struct devlink_ops;
32 
33 struct devlink {
34 	struct list_head list;
35 	struct list_head port_list;
36 	struct list_head sb_list;
37 	struct list_head dpipe_table_list;
38 	struct list_head resource_list;
39 	struct list_head param_list;
40 	struct list_head region_list;
41 	struct list_head reporter_list;
42 	struct mutex reporters_lock; /* protects reporter_list */
43 	struct devlink_dpipe_headers *dpipe_headers;
44 	struct list_head trap_list;
45 	struct list_head trap_group_list;
46 	struct list_head trap_policer_list;
47 	const struct devlink_ops *ops;
48 	struct xarray snapshot_ids;
49 	struct devlink_dev_stats stats;
50 	struct device *dev;
51 	possible_net_t _net;
52 	struct mutex lock; /* Serializes access to devlink instance specific objects such as
53 			    * port, sb, dpipe, resource, params, region, traps and more.
54 			    */
55 	u8 reload_failed:1,
56 	   reload_enabled:1,
57 	   registered:1;
58 	char priv[0] __aligned(NETDEV_ALIGN);
59 };
60 
61 struct devlink_port_phys_attrs {
62 	u32 port_number; /* Same value as "split group".
63 			  * A physical port which is visible to the user
64 			  * for a given port flavour.
65 			  */
66 	u32 split_subport_number; /* If the port is split, this is the number of subport. */
67 };
68 
69 /**
70  * struct devlink_port_pci_pf_attrs - devlink port's PCI PF attributes
71  * @controller: Associated controller number
72  * @pf: Associated PCI PF number for this port.
73  * @external: when set, indicates if a port is for an external controller
74  */
75 struct devlink_port_pci_pf_attrs {
76 	u32 controller;
77 	u16 pf;
78 	u8 external:1;
79 };
80 
81 /**
82  * struct devlink_port_pci_vf_attrs - devlink port's PCI VF attributes
83  * @controller: Associated controller number
84  * @pf: Associated PCI PF number for this port.
85  * @vf: Associated PCI VF for of the PCI PF for this port.
86  * @external: when set, indicates if a port is for an external controller
87  */
88 struct devlink_port_pci_vf_attrs {
89 	u32 controller;
90 	u16 pf;
91 	u16 vf;
92 	u8 external:1;
93 };
94 
95 /**
96  * struct devlink_port_attrs - devlink port object
97  * @flavour: flavour of the port
98  * @split: indicates if this is split port
99  * @splittable: indicates if the port can be split.
100  * @lanes: maximum number of lanes the port supports. 0 value is not passed to netlink.
101  * @switch_id: if the port is part of switch, this is buffer with ID, otherwise this is NULL
102  * @phys: physical port attributes
103  * @pci_pf: PCI PF port attributes
104  * @pci_vf: PCI VF port attributes
105  */
106 struct devlink_port_attrs {
107 	u8 split:1,
108 	   splittable:1;
109 	u32 lanes;
110 	enum devlink_port_flavour flavour;
111 	struct netdev_phys_item_id switch_id;
112 	union {
113 		struct devlink_port_phys_attrs phys;
114 		struct devlink_port_pci_pf_attrs pci_pf;
115 		struct devlink_port_pci_vf_attrs pci_vf;
116 	};
117 };
118 
119 struct devlink_port {
120 	struct list_head list;
121 	struct list_head param_list;
122 	struct list_head region_list;
123 	struct devlink *devlink;
124 	unsigned int index;
125 	bool registered;
126 	spinlock_t type_lock; /* Protects type and type_dev
127 			       * pointer consistency.
128 			       */
129 	enum devlink_port_type type;
130 	enum devlink_port_type desired_type;
131 	void *type_dev;
132 	struct devlink_port_attrs attrs;
133 	u8 attrs_set:1,
134 	   switch_port:1;
135 	struct delayed_work type_warn_dw;
136 	struct list_head reporter_list;
137 	struct mutex reporters_lock; /* Protects reporter_list */
138 };
139 
140 struct devlink_sb_pool_info {
141 	enum devlink_sb_pool_type pool_type;
142 	u32 size;
143 	enum devlink_sb_threshold_type threshold_type;
144 	u32 cell_size;
145 };
146 
147 /**
148  * struct devlink_dpipe_field - dpipe field object
149  * @name: field name
150  * @id: index inside the headers field array
151  * @bitwidth: bitwidth
152  * @mapping_type: mapping type
153  */
154 struct devlink_dpipe_field {
155 	const char *name;
156 	unsigned int id;
157 	unsigned int bitwidth;
158 	enum devlink_dpipe_field_mapping_type mapping_type;
159 };
160 
161 /**
162  * struct devlink_dpipe_header - dpipe header object
163  * @name: header name
164  * @id: index, global/local detrmined by global bit
165  * @fields: fields
166  * @fields_count: number of fields
167  * @global: indicates if header is shared like most protocol header
168  *	    or driver specific
169  */
170 struct devlink_dpipe_header {
171 	const char *name;
172 	unsigned int id;
173 	struct devlink_dpipe_field *fields;
174 	unsigned int fields_count;
175 	bool global;
176 };
177 
178 /**
179  * struct devlink_dpipe_match - represents match operation
180  * @type: type of match
181  * @header_index: header index (packets can have several headers of same
182  *		  type like in case of tunnels)
183  * @header: header
184  * @fieled_id: field index
185  */
186 struct devlink_dpipe_match {
187 	enum devlink_dpipe_match_type type;
188 	unsigned int header_index;
189 	struct devlink_dpipe_header *header;
190 	unsigned int field_id;
191 };
192 
193 /**
194  * struct devlink_dpipe_action - represents action operation
195  * @type: type of action
196  * @header_index: header index (packets can have several headers of same
197  *		  type like in case of tunnels)
198  * @header: header
199  * @fieled_id: field index
200  */
201 struct devlink_dpipe_action {
202 	enum devlink_dpipe_action_type type;
203 	unsigned int header_index;
204 	struct devlink_dpipe_header *header;
205 	unsigned int field_id;
206 };
207 
208 /**
209  * struct devlink_dpipe_value - represents value of match/action
210  * @action: action
211  * @match: match
212  * @mapping_value: in case the field has some mapping this value
213  *                 specified the mapping value
214  * @mapping_valid: specify if mapping value is valid
215  * @value_size: value size
216  * @value: value
217  * @mask: bit mask
218  */
219 struct devlink_dpipe_value {
220 	union {
221 		struct devlink_dpipe_action *action;
222 		struct devlink_dpipe_match *match;
223 	};
224 	unsigned int mapping_value;
225 	bool mapping_valid;
226 	unsigned int value_size;
227 	void *value;
228 	void *mask;
229 };
230 
231 /**
232  * struct devlink_dpipe_entry - table entry object
233  * @index: index of the entry in the table
234  * @match_values: match values
235  * @matche_values_count: count of matches tuples
236  * @action_values: actions values
237  * @action_values_count: count of actions values
238  * @counter: value of counter
239  * @counter_valid: Specify if value is valid from hardware
240  */
241 struct devlink_dpipe_entry {
242 	u64 index;
243 	struct devlink_dpipe_value *match_values;
244 	unsigned int match_values_count;
245 	struct devlink_dpipe_value *action_values;
246 	unsigned int action_values_count;
247 	u64 counter;
248 	bool counter_valid;
249 };
250 
251 /**
252  * struct devlink_dpipe_dump_ctx - context provided to driver in order
253  *				   to dump
254  * @info: info
255  * @cmd: devlink command
256  * @skb: skb
257  * @nest: top attribute
258  * @hdr: hdr
259  */
260 struct devlink_dpipe_dump_ctx {
261 	struct genl_info *info;
262 	enum devlink_command cmd;
263 	struct sk_buff *skb;
264 	struct nlattr *nest;
265 	void *hdr;
266 };
267 
268 struct devlink_dpipe_table_ops;
269 
270 /**
271  * struct devlink_dpipe_table - table object
272  * @priv: private
273  * @name: table name
274  * @counters_enabled: indicates if counters are active
275  * @counter_control_extern: indicates if counter control is in dpipe or
276  *			    external tool
277  * @resource_valid: Indicate that the resource id is valid
278  * @resource_id: relative resource this table is related to
279  * @resource_units: number of resource's unit consumed per table's entry
280  * @table_ops: table operations
281  * @rcu: rcu
282  */
283 struct devlink_dpipe_table {
284 	void *priv;
285 	struct list_head list;
286 	const char *name;
287 	bool counters_enabled;
288 	bool counter_control_extern;
289 	bool resource_valid;
290 	u64 resource_id;
291 	u64 resource_units;
292 	struct devlink_dpipe_table_ops *table_ops;
293 	struct rcu_head rcu;
294 };
295 
296 /**
297  * struct devlink_dpipe_table_ops - dpipe_table ops
298  * @actions_dump - dumps all tables actions
299  * @matches_dump - dumps all tables matches
300  * @entries_dump - dumps all active entries in the table
301  * @counters_set_update - when changing the counter status hardware sync
302  *			  maybe needed to allocate/free counter related
303  *			  resources
304  * @size_get - get size
305  */
306 struct devlink_dpipe_table_ops {
307 	int (*actions_dump)(void *priv, struct sk_buff *skb);
308 	int (*matches_dump)(void *priv, struct sk_buff *skb);
309 	int (*entries_dump)(void *priv, bool counters_enabled,
310 			    struct devlink_dpipe_dump_ctx *dump_ctx);
311 	int (*counters_set_update)(void *priv, bool enable);
312 	u64 (*size_get)(void *priv);
313 };
314 
315 /**
316  * struct devlink_dpipe_headers - dpipe headers
317  * @headers - header array can be shared (global bit) or driver specific
318  * @headers_count - count of headers
319  */
320 struct devlink_dpipe_headers {
321 	struct devlink_dpipe_header **headers;
322 	unsigned int headers_count;
323 };
324 
325 /**
326  * struct devlink_resource_size_params - resource's size parameters
327  * @size_min: minimum size which can be set
328  * @size_max: maximum size which can be set
329  * @size_granularity: size granularity
330  * @size_unit: resource's basic unit
331  */
332 struct devlink_resource_size_params {
333 	u64 size_min;
334 	u64 size_max;
335 	u64 size_granularity;
336 	enum devlink_resource_unit unit;
337 };
338 
339 static inline void
340 devlink_resource_size_params_init(struct devlink_resource_size_params *size_params,
341 				  u64 size_min, u64 size_max,
342 				  u64 size_granularity,
343 				  enum devlink_resource_unit unit)
344 {
345 	size_params->size_min = size_min;
346 	size_params->size_max = size_max;
347 	size_params->size_granularity = size_granularity;
348 	size_params->unit = unit;
349 }
350 
351 typedef u64 devlink_resource_occ_get_t(void *priv);
352 
353 /**
354  * struct devlink_resource - devlink resource
355  * @name: name of the resource
356  * @id: id, per devlink instance
357  * @size: size of the resource
358  * @size_new: updated size of the resource, reload is needed
359  * @size_valid: valid in case the total size of the resource is valid
360  *              including its children
361  * @parent: parent resource
362  * @size_params: size parameters
363  * @list: parent list
364  * @resource_list: list of child resources
365  */
366 struct devlink_resource {
367 	const char *name;
368 	u64 id;
369 	u64 size;
370 	u64 size_new;
371 	bool size_valid;
372 	struct devlink_resource *parent;
373 	struct devlink_resource_size_params size_params;
374 	struct list_head list;
375 	struct list_head resource_list;
376 	devlink_resource_occ_get_t *occ_get;
377 	void *occ_get_priv;
378 };
379 
380 #define DEVLINK_RESOURCE_ID_PARENT_TOP 0
381 
382 #define __DEVLINK_PARAM_MAX_STRING_VALUE 32
383 enum devlink_param_type {
384 	DEVLINK_PARAM_TYPE_U8,
385 	DEVLINK_PARAM_TYPE_U16,
386 	DEVLINK_PARAM_TYPE_U32,
387 	DEVLINK_PARAM_TYPE_STRING,
388 	DEVLINK_PARAM_TYPE_BOOL,
389 };
390 
391 union devlink_param_value {
392 	u8 vu8;
393 	u16 vu16;
394 	u32 vu32;
395 	char vstr[__DEVLINK_PARAM_MAX_STRING_VALUE];
396 	bool vbool;
397 };
398 
399 struct devlink_param_gset_ctx {
400 	union devlink_param_value val;
401 	enum devlink_param_cmode cmode;
402 };
403 
404 /**
405  * struct devlink_flash_notify - devlink dev flash notify data
406  * @status_msg: current status string
407  * @component: firmware component being updated
408  * @done: amount of work completed of total amount
409  * @total: amount of work expected to be done
410  * @timeout: expected max timeout in seconds
411  *
412  * These are values to be given to userland to be displayed in order
413  * to show current activity in a firmware update process.
414  */
415 struct devlink_flash_notify {
416 	const char *status_msg;
417 	const char *component;
418 	unsigned long done;
419 	unsigned long total;
420 	unsigned long timeout;
421 };
422 
423 /**
424  * struct devlink_param - devlink configuration parameter data
425  * @name: name of the parameter
426  * @generic: indicates if the parameter is generic or driver specific
427  * @type: parameter type
428  * @supported_cmodes: bitmap of supported configuration modes
429  * @get: get parameter value, used for runtime and permanent
430  *       configuration modes
431  * @set: set parameter value, used for runtime and permanent
432  *       configuration modes
433  * @validate: validate input value is applicable (within value range, etc.)
434  *
435  * This struct should be used by the driver to fill the data for
436  * a parameter it registers.
437  */
438 struct devlink_param {
439 	u32 id;
440 	const char *name;
441 	bool generic;
442 	enum devlink_param_type type;
443 	unsigned long supported_cmodes;
444 	int (*get)(struct devlink *devlink, u32 id,
445 		   struct devlink_param_gset_ctx *ctx);
446 	int (*set)(struct devlink *devlink, u32 id,
447 		   struct devlink_param_gset_ctx *ctx);
448 	int (*validate)(struct devlink *devlink, u32 id,
449 			union devlink_param_value val,
450 			struct netlink_ext_ack *extack);
451 };
452 
453 struct devlink_param_item {
454 	struct list_head list;
455 	const struct devlink_param *param;
456 	union devlink_param_value driverinit_value;
457 	bool driverinit_value_valid;
458 	bool published;
459 };
460 
461 enum devlink_param_generic_id {
462 	DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
463 	DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
464 	DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
465 	DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
466 	DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
467 	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
468 	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
469 	DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
470 	DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
471 	DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
472 	DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
473 
474 	/* add new param generic ids above here*/
475 	__DEVLINK_PARAM_GENERIC_ID_MAX,
476 	DEVLINK_PARAM_GENERIC_ID_MAX = __DEVLINK_PARAM_GENERIC_ID_MAX - 1,
477 };
478 
479 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME "internal_error_reset"
480 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
481 
482 #define DEVLINK_PARAM_GENERIC_MAX_MACS_NAME "max_macs"
483 #define DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE DEVLINK_PARAM_TYPE_U32
484 
485 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME "enable_sriov"
486 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE DEVLINK_PARAM_TYPE_BOOL
487 
488 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME "region_snapshot_enable"
489 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE DEVLINK_PARAM_TYPE_BOOL
490 
491 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME "ignore_ari"
492 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE DEVLINK_PARAM_TYPE_BOOL
493 
494 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME "msix_vec_per_pf_max"
495 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE DEVLINK_PARAM_TYPE_U32
496 
497 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME "msix_vec_per_pf_min"
498 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE DEVLINK_PARAM_TYPE_U32
499 
500 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME "fw_load_policy"
501 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE DEVLINK_PARAM_TYPE_U8
502 
503 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME \
504 	"reset_dev_on_drv_probe"
505 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE DEVLINK_PARAM_TYPE_U8
506 
507 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME "enable_roce"
508 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE DEVLINK_PARAM_TYPE_BOOL
509 
510 #define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME "enable_remote_dev_reset"
511 #define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
512 
513 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\
514 {									\
515 	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\
516 	.name = DEVLINK_PARAM_GENERIC_##_id##_NAME,			\
517 	.type = DEVLINK_PARAM_GENERIC_##_id##_TYPE,			\
518 	.generic = true,						\
519 	.supported_cmodes = _cmodes,					\
520 	.get = _get,							\
521 	.set = _set,							\
522 	.validate = _validate,						\
523 }
524 
525 #define DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, _get, _set, _validate)	\
526 {									\
527 	.id = _id,							\
528 	.name = _name,							\
529 	.type = _type,							\
530 	.supported_cmodes = _cmodes,					\
531 	.get = _get,							\
532 	.set = _set,							\
533 	.validate = _validate,						\
534 }
535 
536 /* Part number, identifier of board design */
537 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_ID	"board.id"
538 /* Revision of board design */
539 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_REV	"board.rev"
540 /* Maker of the board */
541 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE	"board.manufacture"
542 
543 /* Part number, identifier of asic design */
544 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_ID	"asic.id"
545 /* Revision of asic design */
546 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_REV	"asic.rev"
547 
548 /* Overall FW version */
549 #define DEVLINK_INFO_VERSION_GENERIC_FW		"fw"
550 /* Control processor FW version */
551 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT	"fw.mgmt"
552 /* FW interface specification version */
553 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT_API	"fw.mgmt.api"
554 /* Data path microcode controlling high-speed packet processing */
555 #define DEVLINK_INFO_VERSION_GENERIC_FW_APP	"fw.app"
556 /* UNDI software version */
557 #define DEVLINK_INFO_VERSION_GENERIC_FW_UNDI	"fw.undi"
558 /* NCSI support/handler version */
559 #define DEVLINK_INFO_VERSION_GENERIC_FW_NCSI	"fw.ncsi"
560 /* FW parameter set id */
561 #define DEVLINK_INFO_VERSION_GENERIC_FW_PSID	"fw.psid"
562 /* RoCE FW version */
563 #define DEVLINK_INFO_VERSION_GENERIC_FW_ROCE	"fw.roce"
564 /* Firmware bundle identifier */
565 #define DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID	"fw.bundle_id"
566 
567 /**
568  * struct devlink_flash_update_params - Flash Update parameters
569  * @file_name: the name of the flash firmware file to update from
570  * @component: the flash component to update
571  *
572  * With the exception of file_name, drivers must opt-in to parameters by
573  * setting the appropriate bit in the supported_flash_update_params field in
574  * their devlink_ops structure.
575  */
576 struct devlink_flash_update_params {
577 	const char *file_name;
578 	const char *component;
579 	u32 overwrite_mask;
580 };
581 
582 #define DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT		BIT(0)
583 #define DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK	BIT(1)
584 
585 struct devlink_region;
586 struct devlink_info_req;
587 
588 /**
589  * struct devlink_region_ops - Region operations
590  * @name: region name
591  * @destructor: callback used to free snapshot memory when deleting
592  * @snapshot: callback to request an immediate snapshot. On success,
593  *            the data variable must be updated to point to the snapshot data.
594  *            The function will be called while the devlink instance lock is
595  *            held.
596  * @priv: Pointer to driver private data for the region operation
597  */
598 struct devlink_region_ops {
599 	const char *name;
600 	void (*destructor)(const void *data);
601 	int (*snapshot)(struct devlink *devlink,
602 			const struct devlink_region_ops *ops,
603 			struct netlink_ext_ack *extack,
604 			u8 **data);
605 	void *priv;
606 };
607 
608 /**
609  * struct devlink_port_region_ops - Region operations for a port
610  * @name: region name
611  * @destructor: callback used to free snapshot memory when deleting
612  * @snapshot: callback to request an immediate snapshot. On success,
613  *            the data variable must be updated to point to the snapshot data.
614  *            The function will be called while the devlink instance lock is
615  *            held.
616  * @priv: Pointer to driver private data for the region operation
617  */
618 struct devlink_port_region_ops {
619 	const char *name;
620 	void (*destructor)(const void *data);
621 	int (*snapshot)(struct devlink_port *port,
622 			const struct devlink_port_region_ops *ops,
623 			struct netlink_ext_ack *extack,
624 			u8 **data);
625 	void *priv;
626 };
627 
628 struct devlink_fmsg;
629 struct devlink_health_reporter;
630 
631 enum devlink_health_reporter_state {
632 	DEVLINK_HEALTH_REPORTER_STATE_HEALTHY,
633 	DEVLINK_HEALTH_REPORTER_STATE_ERROR,
634 };
635 
636 /**
637  * struct devlink_health_reporter_ops - Reporter operations
638  * @name: reporter name
639  * @recover: callback to recover from reported error
640  *           if priv_ctx is NULL, run a full recover
641  * @dump: callback to dump an object
642  *        if priv_ctx is NULL, run a full dump
643  * @diagnose: callback to diagnose the current status
644  * @test: callback to trigger a test event
645  */
646 
647 struct devlink_health_reporter_ops {
648 	char *name;
649 	int (*recover)(struct devlink_health_reporter *reporter,
650 		       void *priv_ctx, struct netlink_ext_ack *extack);
651 	int (*dump)(struct devlink_health_reporter *reporter,
652 		    struct devlink_fmsg *fmsg, void *priv_ctx,
653 		    struct netlink_ext_ack *extack);
654 	int (*diagnose)(struct devlink_health_reporter *reporter,
655 			struct devlink_fmsg *fmsg,
656 			struct netlink_ext_ack *extack);
657 	int (*test)(struct devlink_health_reporter *reporter,
658 		    struct netlink_ext_ack *extack);
659 };
660 
661 /**
662  * struct devlink_trap_metadata - Packet trap metadata.
663  * @trap_name: Trap name.
664  * @trap_group_name: Trap group name.
665  * @input_dev: Input netdevice.
666  * @fa_cookie: Flow action user cookie.
667  * @trap_type: Trap type.
668  */
669 struct devlink_trap_metadata {
670 	const char *trap_name;
671 	const char *trap_group_name;
672 	struct net_device *input_dev;
673 	const struct flow_action_cookie *fa_cookie;
674 	enum devlink_trap_type trap_type;
675 };
676 
677 /**
678  * struct devlink_trap_policer - Immutable packet trap policer attributes.
679  * @id: Policer identifier.
680  * @init_rate: Initial rate in packets / sec.
681  * @init_burst: Initial burst size in packets.
682  * @max_rate: Maximum rate.
683  * @min_rate: Minimum rate.
684  * @max_burst: Maximum burst size.
685  * @min_burst: Minimum burst size.
686  *
687  * Describes immutable attributes of packet trap policers that drivers register
688  * with devlink.
689  */
690 struct devlink_trap_policer {
691 	u32 id;
692 	u64 init_rate;
693 	u64 init_burst;
694 	u64 max_rate;
695 	u64 min_rate;
696 	u64 max_burst;
697 	u64 min_burst;
698 };
699 
700 /**
701  * struct devlink_trap_group - Immutable packet trap group attributes.
702  * @name: Trap group name.
703  * @id: Trap group identifier.
704  * @generic: Whether the trap group is generic or not.
705  * @init_policer_id: Initial policer identifier.
706  *
707  * Describes immutable attributes of packet trap groups that drivers register
708  * with devlink.
709  */
710 struct devlink_trap_group {
711 	const char *name;
712 	u16 id;
713 	bool generic;
714 	u32 init_policer_id;
715 };
716 
717 #define DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT	BIT(0)
718 #define DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE	BIT(1)
719 
720 /**
721  * struct devlink_trap - Immutable packet trap attributes.
722  * @type: Trap type.
723  * @init_action: Initial trap action.
724  * @generic: Whether the trap is generic or not.
725  * @id: Trap identifier.
726  * @name: Trap name.
727  * @init_group_id: Initial group identifier.
728  * @metadata_cap: Metadata types that can be provided by the trap.
729  *
730  * Describes immutable attributes of packet traps that drivers register with
731  * devlink.
732  */
733 struct devlink_trap {
734 	enum devlink_trap_type type;
735 	enum devlink_trap_action init_action;
736 	bool generic;
737 	u16 id;
738 	const char *name;
739 	u16 init_group_id;
740 	u32 metadata_cap;
741 };
742 
743 /* All traps must be documented in
744  * Documentation/networking/devlink/devlink-trap.rst
745  */
746 enum devlink_trap_generic_id {
747 	DEVLINK_TRAP_GENERIC_ID_SMAC_MC,
748 	DEVLINK_TRAP_GENERIC_ID_VLAN_TAG_MISMATCH,
749 	DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER,
750 	DEVLINK_TRAP_GENERIC_ID_INGRESS_STP_FILTER,
751 	DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
752 	DEVLINK_TRAP_GENERIC_ID_PORT_LOOPBACK_FILTER,
753 	DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
754 	DEVLINK_TRAP_GENERIC_ID_TTL_ERROR,
755 	DEVLINK_TRAP_GENERIC_ID_TAIL_DROP,
756 	DEVLINK_TRAP_GENERIC_ID_NON_IP_PACKET,
757 	DEVLINK_TRAP_GENERIC_ID_UC_DIP_MC_DMAC,
758 	DEVLINK_TRAP_GENERIC_ID_DIP_LB,
759 	DEVLINK_TRAP_GENERIC_ID_SIP_MC,
760 	DEVLINK_TRAP_GENERIC_ID_SIP_LB,
761 	DEVLINK_TRAP_GENERIC_ID_CORRUPTED_IP_HDR,
762 	DEVLINK_TRAP_GENERIC_ID_IPV4_SIP_BC,
763 	DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_RESERVED_SCOPE,
764 	DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE,
765 	DEVLINK_TRAP_GENERIC_ID_MTU_ERROR,
766 	DEVLINK_TRAP_GENERIC_ID_UNRESOLVED_NEIGH,
767 	DEVLINK_TRAP_GENERIC_ID_RPF,
768 	DEVLINK_TRAP_GENERIC_ID_REJECT_ROUTE,
769 	DEVLINK_TRAP_GENERIC_ID_IPV4_LPM_UNICAST_MISS,
770 	DEVLINK_TRAP_GENERIC_ID_IPV6_LPM_UNICAST_MISS,
771 	DEVLINK_TRAP_GENERIC_ID_NON_ROUTABLE,
772 	DEVLINK_TRAP_GENERIC_ID_DECAP_ERROR,
773 	DEVLINK_TRAP_GENERIC_ID_OVERLAY_SMAC_MC,
774 	DEVLINK_TRAP_GENERIC_ID_INGRESS_FLOW_ACTION_DROP,
775 	DEVLINK_TRAP_GENERIC_ID_EGRESS_FLOW_ACTION_DROP,
776 	DEVLINK_TRAP_GENERIC_ID_STP,
777 	DEVLINK_TRAP_GENERIC_ID_LACP,
778 	DEVLINK_TRAP_GENERIC_ID_LLDP,
779 	DEVLINK_TRAP_GENERIC_ID_IGMP_QUERY,
780 	DEVLINK_TRAP_GENERIC_ID_IGMP_V1_REPORT,
781 	DEVLINK_TRAP_GENERIC_ID_IGMP_V2_REPORT,
782 	DEVLINK_TRAP_GENERIC_ID_IGMP_V3_REPORT,
783 	DEVLINK_TRAP_GENERIC_ID_IGMP_V2_LEAVE,
784 	DEVLINK_TRAP_GENERIC_ID_MLD_QUERY,
785 	DEVLINK_TRAP_GENERIC_ID_MLD_V1_REPORT,
786 	DEVLINK_TRAP_GENERIC_ID_MLD_V2_REPORT,
787 	DEVLINK_TRAP_GENERIC_ID_MLD_V1_DONE,
788 	DEVLINK_TRAP_GENERIC_ID_IPV4_DHCP,
789 	DEVLINK_TRAP_GENERIC_ID_IPV6_DHCP,
790 	DEVLINK_TRAP_GENERIC_ID_ARP_REQUEST,
791 	DEVLINK_TRAP_GENERIC_ID_ARP_RESPONSE,
792 	DEVLINK_TRAP_GENERIC_ID_ARP_OVERLAY,
793 	DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_SOLICIT,
794 	DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_ADVERT,
795 	DEVLINK_TRAP_GENERIC_ID_IPV4_BFD,
796 	DEVLINK_TRAP_GENERIC_ID_IPV6_BFD,
797 	DEVLINK_TRAP_GENERIC_ID_IPV4_OSPF,
798 	DEVLINK_TRAP_GENERIC_ID_IPV6_OSPF,
799 	DEVLINK_TRAP_GENERIC_ID_IPV4_BGP,
800 	DEVLINK_TRAP_GENERIC_ID_IPV6_BGP,
801 	DEVLINK_TRAP_GENERIC_ID_IPV4_VRRP,
802 	DEVLINK_TRAP_GENERIC_ID_IPV6_VRRP,
803 	DEVLINK_TRAP_GENERIC_ID_IPV4_PIM,
804 	DEVLINK_TRAP_GENERIC_ID_IPV6_PIM,
805 	DEVLINK_TRAP_GENERIC_ID_UC_LB,
806 	DEVLINK_TRAP_GENERIC_ID_LOCAL_ROUTE,
807 	DEVLINK_TRAP_GENERIC_ID_EXTERNAL_ROUTE,
808 	DEVLINK_TRAP_GENERIC_ID_IPV6_UC_DIP_LINK_LOCAL_SCOPE,
809 	DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_NODES,
810 	DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_ROUTERS,
811 	DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_SOLICIT,
812 	DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ADVERT,
813 	DEVLINK_TRAP_GENERIC_ID_IPV6_REDIRECT,
814 	DEVLINK_TRAP_GENERIC_ID_IPV4_ROUTER_ALERT,
815 	DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ALERT,
816 	DEVLINK_TRAP_GENERIC_ID_PTP_EVENT,
817 	DEVLINK_TRAP_GENERIC_ID_PTP_GENERAL,
818 	DEVLINK_TRAP_GENERIC_ID_FLOW_ACTION_SAMPLE,
819 	DEVLINK_TRAP_GENERIC_ID_FLOW_ACTION_TRAP,
820 	DEVLINK_TRAP_GENERIC_ID_EARLY_DROP,
821 	DEVLINK_TRAP_GENERIC_ID_VXLAN_PARSING,
822 	DEVLINK_TRAP_GENERIC_ID_LLC_SNAP_PARSING,
823 	DEVLINK_TRAP_GENERIC_ID_VLAN_PARSING,
824 	DEVLINK_TRAP_GENERIC_ID_PPPOE_PPP_PARSING,
825 	DEVLINK_TRAP_GENERIC_ID_MPLS_PARSING,
826 	DEVLINK_TRAP_GENERIC_ID_ARP_PARSING,
827 	DEVLINK_TRAP_GENERIC_ID_IP_1_PARSING,
828 	DEVLINK_TRAP_GENERIC_ID_IP_N_PARSING,
829 	DEVLINK_TRAP_GENERIC_ID_GRE_PARSING,
830 	DEVLINK_TRAP_GENERIC_ID_UDP_PARSING,
831 	DEVLINK_TRAP_GENERIC_ID_TCP_PARSING,
832 	DEVLINK_TRAP_GENERIC_ID_IPSEC_PARSING,
833 	DEVLINK_TRAP_GENERIC_ID_SCTP_PARSING,
834 	DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING,
835 	DEVLINK_TRAP_GENERIC_ID_GTP_PARSING,
836 	DEVLINK_TRAP_GENERIC_ID_ESP_PARSING,
837 
838 	/* Add new generic trap IDs above */
839 	__DEVLINK_TRAP_GENERIC_ID_MAX,
840 	DEVLINK_TRAP_GENERIC_ID_MAX = __DEVLINK_TRAP_GENERIC_ID_MAX - 1,
841 };
842 
843 /* All trap groups must be documented in
844  * Documentation/networking/devlink/devlink-trap.rst
845  */
846 enum devlink_trap_group_generic_id {
847 	DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS,
848 	DEVLINK_TRAP_GROUP_GENERIC_ID_L3_DROPS,
849 	DEVLINK_TRAP_GROUP_GENERIC_ID_L3_EXCEPTIONS,
850 	DEVLINK_TRAP_GROUP_GENERIC_ID_BUFFER_DROPS,
851 	DEVLINK_TRAP_GROUP_GENERIC_ID_TUNNEL_DROPS,
852 	DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_DROPS,
853 	DEVLINK_TRAP_GROUP_GENERIC_ID_STP,
854 	DEVLINK_TRAP_GROUP_GENERIC_ID_LACP,
855 	DEVLINK_TRAP_GROUP_GENERIC_ID_LLDP,
856 	DEVLINK_TRAP_GROUP_GENERIC_ID_MC_SNOOPING,
857 	DEVLINK_TRAP_GROUP_GENERIC_ID_DHCP,
858 	DEVLINK_TRAP_GROUP_GENERIC_ID_NEIGH_DISCOVERY,
859 	DEVLINK_TRAP_GROUP_GENERIC_ID_BFD,
860 	DEVLINK_TRAP_GROUP_GENERIC_ID_OSPF,
861 	DEVLINK_TRAP_GROUP_GENERIC_ID_BGP,
862 	DEVLINK_TRAP_GROUP_GENERIC_ID_VRRP,
863 	DEVLINK_TRAP_GROUP_GENERIC_ID_PIM,
864 	DEVLINK_TRAP_GROUP_GENERIC_ID_UC_LB,
865 	DEVLINK_TRAP_GROUP_GENERIC_ID_LOCAL_DELIVERY,
866 	DEVLINK_TRAP_GROUP_GENERIC_ID_EXTERNAL_DELIVERY,
867 	DEVLINK_TRAP_GROUP_GENERIC_ID_IPV6,
868 	DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_EVENT,
869 	DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_GENERAL,
870 	DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_SAMPLE,
871 	DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_TRAP,
872 	DEVLINK_TRAP_GROUP_GENERIC_ID_PARSER_ERROR_DROPS,
873 
874 	/* Add new generic trap group IDs above */
875 	__DEVLINK_TRAP_GROUP_GENERIC_ID_MAX,
876 	DEVLINK_TRAP_GROUP_GENERIC_ID_MAX =
877 		__DEVLINK_TRAP_GROUP_GENERIC_ID_MAX - 1,
878 };
879 
880 #define DEVLINK_TRAP_GENERIC_NAME_SMAC_MC \
881 	"source_mac_is_multicast"
882 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_TAG_MISMATCH \
883 	"vlan_tag_mismatch"
884 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_VLAN_FILTER \
885 	"ingress_vlan_filter"
886 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_STP_FILTER \
887 	"ingress_spanning_tree_filter"
888 #define DEVLINK_TRAP_GENERIC_NAME_EMPTY_TX_LIST \
889 	"port_list_is_empty"
890 #define DEVLINK_TRAP_GENERIC_NAME_PORT_LOOPBACK_FILTER \
891 	"port_loopback_filter"
892 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_ROUTE \
893 	"blackhole_route"
894 #define DEVLINK_TRAP_GENERIC_NAME_TTL_ERROR \
895 	"ttl_value_is_too_small"
896 #define DEVLINK_TRAP_GENERIC_NAME_TAIL_DROP \
897 	"tail_drop"
898 #define DEVLINK_TRAP_GENERIC_NAME_NON_IP_PACKET \
899 	"non_ip"
900 #define DEVLINK_TRAP_GENERIC_NAME_UC_DIP_MC_DMAC \
901 	"uc_dip_over_mc_dmac"
902 #define DEVLINK_TRAP_GENERIC_NAME_DIP_LB \
903 	"dip_is_loopback_address"
904 #define DEVLINK_TRAP_GENERIC_NAME_SIP_MC \
905 	"sip_is_mc"
906 #define DEVLINK_TRAP_GENERIC_NAME_SIP_LB \
907 	"sip_is_loopback_address"
908 #define DEVLINK_TRAP_GENERIC_NAME_CORRUPTED_IP_HDR \
909 	"ip_header_corrupted"
910 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_SIP_BC \
911 	"ipv4_sip_is_limited_bc"
912 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_RESERVED_SCOPE \
913 	"ipv6_mc_dip_reserved_scope"
914 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE \
915 	"ipv6_mc_dip_interface_local_scope"
916 #define DEVLINK_TRAP_GENERIC_NAME_MTU_ERROR \
917 	"mtu_value_is_too_small"
918 #define DEVLINK_TRAP_GENERIC_NAME_UNRESOLVED_NEIGH \
919 	"unresolved_neigh"
920 #define DEVLINK_TRAP_GENERIC_NAME_RPF \
921 	"mc_reverse_path_forwarding"
922 #define DEVLINK_TRAP_GENERIC_NAME_REJECT_ROUTE \
923 	"reject_route"
924 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_LPM_UNICAST_MISS \
925 	"ipv4_lpm_miss"
926 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_LPM_UNICAST_MISS \
927 	"ipv6_lpm_miss"
928 #define DEVLINK_TRAP_GENERIC_NAME_NON_ROUTABLE \
929 	"non_routable_packet"
930 #define DEVLINK_TRAP_GENERIC_NAME_DECAP_ERROR \
931 	"decap_error"
932 #define DEVLINK_TRAP_GENERIC_NAME_OVERLAY_SMAC_MC \
933 	"overlay_smac_is_mc"
934 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_FLOW_ACTION_DROP \
935 	"ingress_flow_action_drop"
936 #define DEVLINK_TRAP_GENERIC_NAME_EGRESS_FLOW_ACTION_DROP \
937 	"egress_flow_action_drop"
938 #define DEVLINK_TRAP_GENERIC_NAME_STP \
939 	"stp"
940 #define DEVLINK_TRAP_GENERIC_NAME_LACP \
941 	"lacp"
942 #define DEVLINK_TRAP_GENERIC_NAME_LLDP \
943 	"lldp"
944 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_QUERY \
945 	"igmp_query"
946 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V1_REPORT \
947 	"igmp_v1_report"
948 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V2_REPORT \
949 	"igmp_v2_report"
950 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V3_REPORT \
951 	"igmp_v3_report"
952 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V2_LEAVE \
953 	"igmp_v2_leave"
954 #define DEVLINK_TRAP_GENERIC_NAME_MLD_QUERY \
955 	"mld_query"
956 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_REPORT \
957 	"mld_v1_report"
958 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V2_REPORT \
959 	"mld_v2_report"
960 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_DONE \
961 	"mld_v1_done"
962 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_DHCP \
963 	"ipv4_dhcp"
964 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DHCP \
965 	"ipv6_dhcp"
966 #define DEVLINK_TRAP_GENERIC_NAME_ARP_REQUEST \
967 	"arp_request"
968 #define DEVLINK_TRAP_GENERIC_NAME_ARP_RESPONSE \
969 	"arp_response"
970 #define DEVLINK_TRAP_GENERIC_NAME_ARP_OVERLAY \
971 	"arp_overlay"
972 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_SOLICIT \
973 	"ipv6_neigh_solicit"
974 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_ADVERT \
975 	"ipv6_neigh_advert"
976 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_BFD \
977 	"ipv4_bfd"
978 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_BFD \
979 	"ipv6_bfd"
980 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_OSPF \
981 	"ipv4_ospf"
982 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_OSPF \
983 	"ipv6_ospf"
984 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_BGP \
985 	"ipv4_bgp"
986 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_BGP \
987 	"ipv6_bgp"
988 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_VRRP \
989 	"ipv4_vrrp"
990 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_VRRP \
991 	"ipv6_vrrp"
992 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_PIM \
993 	"ipv4_pim"
994 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_PIM \
995 	"ipv6_pim"
996 #define DEVLINK_TRAP_GENERIC_NAME_UC_LB \
997 	"uc_loopback"
998 #define DEVLINK_TRAP_GENERIC_NAME_LOCAL_ROUTE \
999 	"local_route"
1000 #define DEVLINK_TRAP_GENERIC_NAME_EXTERNAL_ROUTE \
1001 	"external_route"
1002 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_UC_DIP_LINK_LOCAL_SCOPE \
1003 	"ipv6_uc_dip_link_local_scope"
1004 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_NODES \
1005 	"ipv6_dip_all_nodes"
1006 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_ROUTERS \
1007 	"ipv6_dip_all_routers"
1008 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_SOLICIT \
1009 	"ipv6_router_solicit"
1010 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ADVERT \
1011 	"ipv6_router_advert"
1012 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_REDIRECT \
1013 	"ipv6_redirect"
1014 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_ROUTER_ALERT \
1015 	"ipv4_router_alert"
1016 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ALERT \
1017 	"ipv6_router_alert"
1018 #define DEVLINK_TRAP_GENERIC_NAME_PTP_EVENT \
1019 	"ptp_event"
1020 #define DEVLINK_TRAP_GENERIC_NAME_PTP_GENERAL \
1021 	"ptp_general"
1022 #define DEVLINK_TRAP_GENERIC_NAME_FLOW_ACTION_SAMPLE \
1023 	"flow_action_sample"
1024 #define DEVLINK_TRAP_GENERIC_NAME_FLOW_ACTION_TRAP \
1025 	"flow_action_trap"
1026 #define DEVLINK_TRAP_GENERIC_NAME_EARLY_DROP \
1027 	"early_drop"
1028 #define DEVLINK_TRAP_GENERIC_NAME_VXLAN_PARSING \
1029 	"vxlan_parsing"
1030 #define DEVLINK_TRAP_GENERIC_NAME_LLC_SNAP_PARSING \
1031 	"llc_snap_parsing"
1032 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_PARSING \
1033 	"vlan_parsing"
1034 #define DEVLINK_TRAP_GENERIC_NAME_PPPOE_PPP_PARSING \
1035 	"pppoe_ppp_parsing"
1036 #define DEVLINK_TRAP_GENERIC_NAME_MPLS_PARSING \
1037 	"mpls_parsing"
1038 #define DEVLINK_TRAP_GENERIC_NAME_ARP_PARSING \
1039 	"arp_parsing"
1040 #define DEVLINK_TRAP_GENERIC_NAME_IP_1_PARSING \
1041 	"ip_1_parsing"
1042 #define DEVLINK_TRAP_GENERIC_NAME_IP_N_PARSING \
1043 	"ip_n_parsing"
1044 #define DEVLINK_TRAP_GENERIC_NAME_GRE_PARSING \
1045 	"gre_parsing"
1046 #define DEVLINK_TRAP_GENERIC_NAME_UDP_PARSING \
1047 	"udp_parsing"
1048 #define DEVLINK_TRAP_GENERIC_NAME_TCP_PARSING \
1049 	"tcp_parsing"
1050 #define DEVLINK_TRAP_GENERIC_NAME_IPSEC_PARSING \
1051 	"ipsec_parsing"
1052 #define DEVLINK_TRAP_GENERIC_NAME_SCTP_PARSING \
1053 	"sctp_parsing"
1054 #define DEVLINK_TRAP_GENERIC_NAME_DCCP_PARSING \
1055 	"dccp_parsing"
1056 #define DEVLINK_TRAP_GENERIC_NAME_GTP_PARSING \
1057 	"gtp_parsing"
1058 #define DEVLINK_TRAP_GENERIC_NAME_ESP_PARSING \
1059 	"esp_parsing"
1060 
1061 
1062 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
1063 	"l2_drops"
1064 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_DROPS \
1065 	"l3_drops"
1066 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_EXCEPTIONS \
1067 	"l3_exceptions"
1068 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BUFFER_DROPS \
1069 	"buffer_drops"
1070 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_TUNNEL_DROPS \
1071 	"tunnel_drops"
1072 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_DROPS \
1073 	"acl_drops"
1074 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_STP \
1075 	"stp"
1076 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LACP \
1077 	"lacp"
1078 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LLDP \
1079 	"lldp"
1080 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_MC_SNOOPING  \
1081 	"mc_snooping"
1082 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_DHCP \
1083 	"dhcp"
1084 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_NEIGH_DISCOVERY \
1085 	"neigh_discovery"
1086 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BFD \
1087 	"bfd"
1088 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_OSPF \
1089 	"ospf"
1090 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BGP \
1091 	"bgp"
1092 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_VRRP \
1093 	"vrrp"
1094 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PIM \
1095 	"pim"
1096 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_UC_LB \
1097 	"uc_loopback"
1098 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LOCAL_DELIVERY \
1099 	"local_delivery"
1100 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_EXTERNAL_DELIVERY \
1101 	"external_delivery"
1102 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_IPV6 \
1103 	"ipv6"
1104 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_EVENT \
1105 	"ptp_event"
1106 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_GENERAL \
1107 	"ptp_general"
1108 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_SAMPLE \
1109 	"acl_sample"
1110 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_TRAP \
1111 	"acl_trap"
1112 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PARSER_ERROR_DROPS \
1113 	"parser_error_drops"
1114 
1115 #define DEVLINK_TRAP_GENERIC(_type, _init_action, _id, _group_id,	      \
1116 			     _metadata_cap)				      \
1117 	{								      \
1118 		.type = DEVLINK_TRAP_TYPE_##_type,			      \
1119 		.init_action = DEVLINK_TRAP_ACTION_##_init_action,	      \
1120 		.generic = true,					      \
1121 		.id = DEVLINK_TRAP_GENERIC_ID_##_id,			      \
1122 		.name = DEVLINK_TRAP_GENERIC_NAME_##_id,		      \
1123 		.init_group_id = _group_id,				      \
1124 		.metadata_cap = _metadata_cap,				      \
1125 	}
1126 
1127 #define DEVLINK_TRAP_DRIVER(_type, _init_action, _id, _name, _group_id,	      \
1128 			    _metadata_cap)				      \
1129 	{								      \
1130 		.type = DEVLINK_TRAP_TYPE_##_type,			      \
1131 		.init_action = DEVLINK_TRAP_ACTION_##_init_action,	      \
1132 		.generic = false,					      \
1133 		.id = _id,						      \
1134 		.name = _name,						      \
1135 		.init_group_id = _group_id,				      \
1136 		.metadata_cap = _metadata_cap,				      \
1137 	}
1138 
1139 #define DEVLINK_TRAP_GROUP_GENERIC(_id, _policer_id)			      \
1140 	{								      \
1141 		.name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id,		      \
1142 		.id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id,		      \
1143 		.generic = true,					      \
1144 		.init_policer_id = _policer_id,				      \
1145 	}
1146 
1147 #define DEVLINK_TRAP_POLICER(_id, _rate, _burst, _max_rate, _min_rate,	      \
1148 			     _max_burst, _min_burst)			      \
1149 	{								      \
1150 		.id = _id,						      \
1151 		.init_rate = _rate,					      \
1152 		.init_burst = _burst,					      \
1153 		.max_rate = _max_rate,					      \
1154 		.min_rate = _min_rate,					      \
1155 		.max_burst = _max_burst,				      \
1156 		.min_burst = _min_burst,				      \
1157 	}
1158 
1159 struct devlink_ops {
1160 	/**
1161 	 * @supported_flash_update_params:
1162 	 * mask of parameters supported by the driver's .flash_update
1163 	 * implemementation.
1164 	 */
1165 	u32 supported_flash_update_params;
1166 	unsigned long reload_actions;
1167 	unsigned long reload_limits;
1168 	int (*reload_down)(struct devlink *devlink, bool netns_change,
1169 			   enum devlink_reload_action action,
1170 			   enum devlink_reload_limit limit,
1171 			   struct netlink_ext_ack *extack);
1172 	int (*reload_up)(struct devlink *devlink, enum devlink_reload_action action,
1173 			 enum devlink_reload_limit limit, u32 *actions_performed,
1174 			 struct netlink_ext_ack *extack);
1175 	int (*port_type_set)(struct devlink_port *devlink_port,
1176 			     enum devlink_port_type port_type);
1177 	int (*port_split)(struct devlink *devlink, unsigned int port_index,
1178 			  unsigned int count, struct netlink_ext_ack *extack);
1179 	int (*port_unsplit)(struct devlink *devlink, unsigned int port_index,
1180 			    struct netlink_ext_ack *extack);
1181 	int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
1182 			   u16 pool_index,
1183 			   struct devlink_sb_pool_info *pool_info);
1184 	int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
1185 			   u16 pool_index, u32 size,
1186 			   enum devlink_sb_threshold_type threshold_type,
1187 			   struct netlink_ext_ack *extack);
1188 	int (*sb_port_pool_get)(struct devlink_port *devlink_port,
1189 				unsigned int sb_index, u16 pool_index,
1190 				u32 *p_threshold);
1191 	int (*sb_port_pool_set)(struct devlink_port *devlink_port,
1192 				unsigned int sb_index, u16 pool_index,
1193 				u32 threshold, struct netlink_ext_ack *extack);
1194 	int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
1195 				   unsigned int sb_index,
1196 				   u16 tc_index,
1197 				   enum devlink_sb_pool_type pool_type,
1198 				   u16 *p_pool_index, u32 *p_threshold);
1199 	int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
1200 				   unsigned int sb_index,
1201 				   u16 tc_index,
1202 				   enum devlink_sb_pool_type pool_type,
1203 				   u16 pool_index, u32 threshold,
1204 				   struct netlink_ext_ack *extack);
1205 	int (*sb_occ_snapshot)(struct devlink *devlink,
1206 			       unsigned int sb_index);
1207 	int (*sb_occ_max_clear)(struct devlink *devlink,
1208 				unsigned int sb_index);
1209 	int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
1210 				    unsigned int sb_index, u16 pool_index,
1211 				    u32 *p_cur, u32 *p_max);
1212 	int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
1213 				       unsigned int sb_index,
1214 				       u16 tc_index,
1215 				       enum devlink_sb_pool_type pool_type,
1216 				       u32 *p_cur, u32 *p_max);
1217 
1218 	int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
1219 	int (*eswitch_mode_set)(struct devlink *devlink, u16 mode,
1220 				struct netlink_ext_ack *extack);
1221 	int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
1222 	int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode,
1223 				       struct netlink_ext_ack *extack);
1224 	int (*eswitch_encap_mode_get)(struct devlink *devlink,
1225 				      enum devlink_eswitch_encap_mode *p_encap_mode);
1226 	int (*eswitch_encap_mode_set)(struct devlink *devlink,
1227 				      enum devlink_eswitch_encap_mode encap_mode,
1228 				      struct netlink_ext_ack *extack);
1229 	int (*info_get)(struct devlink *devlink, struct devlink_info_req *req,
1230 			struct netlink_ext_ack *extack);
1231 	/**
1232 	 * @flash_update: Device flash update function
1233 	 *
1234 	 * Used to perform a flash update for the device. The set of
1235 	 * parameters supported by the driver should be set in
1236 	 * supported_flash_update_params.
1237 	 */
1238 	int (*flash_update)(struct devlink *devlink,
1239 			    struct devlink_flash_update_params *params,
1240 			    struct netlink_ext_ack *extack);
1241 	/**
1242 	 * @trap_init: Trap initialization function.
1243 	 *
1244 	 * Should be used by device drivers to initialize the trap in the
1245 	 * underlying device. Drivers should also store the provided trap
1246 	 * context, so that they could efficiently pass it to
1247 	 * devlink_trap_report() when the trap is triggered.
1248 	 */
1249 	int (*trap_init)(struct devlink *devlink,
1250 			 const struct devlink_trap *trap, void *trap_ctx);
1251 	/**
1252 	 * @trap_fini: Trap de-initialization function.
1253 	 *
1254 	 * Should be used by device drivers to de-initialize the trap in the
1255 	 * underlying device.
1256 	 */
1257 	void (*trap_fini)(struct devlink *devlink,
1258 			  const struct devlink_trap *trap, void *trap_ctx);
1259 	/**
1260 	 * @trap_action_set: Trap action set function.
1261 	 */
1262 	int (*trap_action_set)(struct devlink *devlink,
1263 			       const struct devlink_trap *trap,
1264 			       enum devlink_trap_action action,
1265 			       struct netlink_ext_ack *extack);
1266 	/**
1267 	 * @trap_group_init: Trap group initialization function.
1268 	 *
1269 	 * Should be used by device drivers to initialize the trap group in the
1270 	 * underlying device.
1271 	 */
1272 	int (*trap_group_init)(struct devlink *devlink,
1273 			       const struct devlink_trap_group *group);
1274 	/**
1275 	 * @trap_group_set: Trap group parameters set function.
1276 	 *
1277 	 * Note: @policer can be NULL when a policer is being unbound from
1278 	 * @group.
1279 	 */
1280 	int (*trap_group_set)(struct devlink *devlink,
1281 			      const struct devlink_trap_group *group,
1282 			      const struct devlink_trap_policer *policer,
1283 			      struct netlink_ext_ack *extack);
1284 	/**
1285 	 * @trap_group_action_set: Trap group action set function.
1286 	 *
1287 	 * If this callback is populated, it will take precedence over looping
1288 	 * over all traps in a group and calling .trap_action_set().
1289 	 */
1290 	int (*trap_group_action_set)(struct devlink *devlink,
1291 				     const struct devlink_trap_group *group,
1292 				     enum devlink_trap_action action,
1293 				     struct netlink_ext_ack *extack);
1294 	/**
1295 	 * @trap_policer_init: Trap policer initialization function.
1296 	 *
1297 	 * Should be used by device drivers to initialize the trap policer in
1298 	 * the underlying device.
1299 	 */
1300 	int (*trap_policer_init)(struct devlink *devlink,
1301 				 const struct devlink_trap_policer *policer);
1302 	/**
1303 	 * @trap_policer_fini: Trap policer de-initialization function.
1304 	 *
1305 	 * Should be used by device drivers to de-initialize the trap policer
1306 	 * in the underlying device.
1307 	 */
1308 	void (*trap_policer_fini)(struct devlink *devlink,
1309 				  const struct devlink_trap_policer *policer);
1310 	/**
1311 	 * @trap_policer_set: Trap policer parameters set function.
1312 	 */
1313 	int (*trap_policer_set)(struct devlink *devlink,
1314 				const struct devlink_trap_policer *policer,
1315 				u64 rate, u64 burst,
1316 				struct netlink_ext_ack *extack);
1317 	/**
1318 	 * @trap_policer_counter_get: Trap policer counter get function.
1319 	 *
1320 	 * Should be used by device drivers to report number of packets dropped
1321 	 * by the policer.
1322 	 */
1323 	int (*trap_policer_counter_get)(struct devlink *devlink,
1324 					const struct devlink_trap_policer *policer,
1325 					u64 *p_drops);
1326 	/**
1327 	 * @port_function_hw_addr_get: Port function's hardware address get function.
1328 	 *
1329 	 * Should be used by device drivers to report the hardware address of a function managed
1330 	 * by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
1331 	 * function handling for a particular port.
1332 	 *
1333 	 * Note: @extack can be NULL when port notifier queries the port function.
1334 	 */
1335 	int (*port_function_hw_addr_get)(struct devlink *devlink, struct devlink_port *port,
1336 					 u8 *hw_addr, int *hw_addr_len,
1337 					 struct netlink_ext_ack *extack);
1338 	/**
1339 	 * @port_function_hw_addr_set: Port function's hardware address set function.
1340 	 *
1341 	 * Should be used by device drivers to set the hardware address of a function managed
1342 	 * by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
1343 	 * function handling for a particular port.
1344 	 */
1345 	int (*port_function_hw_addr_set)(struct devlink *devlink, struct devlink_port *port,
1346 					 const u8 *hw_addr, int hw_addr_len,
1347 					 struct netlink_ext_ack *extack);
1348 };
1349 
1350 static inline void *devlink_priv(struct devlink *devlink)
1351 {
1352 	BUG_ON(!devlink);
1353 	return &devlink->priv;
1354 }
1355 
1356 static inline struct devlink *priv_to_devlink(void *priv)
1357 {
1358 	BUG_ON(!priv);
1359 	return container_of(priv, struct devlink, priv);
1360 }
1361 
1362 static inline struct devlink_port *
1363 netdev_to_devlink_port(struct net_device *dev)
1364 {
1365 	if (dev->netdev_ops->ndo_get_devlink_port)
1366 		return dev->netdev_ops->ndo_get_devlink_port(dev);
1367 	return NULL;
1368 }
1369 
1370 static inline struct devlink *netdev_to_devlink(struct net_device *dev)
1371 {
1372 	struct devlink_port *devlink_port = netdev_to_devlink_port(dev);
1373 
1374 	if (devlink_port)
1375 		return devlink_port->devlink;
1376 	return NULL;
1377 }
1378 
1379 struct ib_device;
1380 
1381 struct net *devlink_net(const struct devlink *devlink);
1382 void devlink_net_set(struct devlink *devlink, struct net *net);
1383 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
1384 int devlink_register(struct devlink *devlink, struct device *dev);
1385 void devlink_unregister(struct devlink *devlink);
1386 void devlink_reload_enable(struct devlink *devlink);
1387 void devlink_reload_disable(struct devlink *devlink);
1388 void devlink_free(struct devlink *devlink);
1389 int devlink_port_register(struct devlink *devlink,
1390 			  struct devlink_port *devlink_port,
1391 			  unsigned int port_index);
1392 void devlink_port_unregister(struct devlink_port *devlink_port);
1393 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
1394 			       struct net_device *netdev);
1395 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
1396 			      struct ib_device *ibdev);
1397 void devlink_port_type_clear(struct devlink_port *devlink_port);
1398 void devlink_port_attrs_set(struct devlink_port *devlink_port,
1399 			    struct devlink_port_attrs *devlink_port_attrs);
1400 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
1401 				   u16 pf, bool external);
1402 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
1403 				   u16 pf, u16 vf, bool external);
1404 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
1405 			u32 size, u16 ingress_pools_count,
1406 			u16 egress_pools_count, u16 ingress_tc_count,
1407 			u16 egress_tc_count);
1408 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
1409 int devlink_dpipe_table_register(struct devlink *devlink,
1410 				 const char *table_name,
1411 				 struct devlink_dpipe_table_ops *table_ops,
1412 				 void *priv, bool counter_control_extern);
1413 void devlink_dpipe_table_unregister(struct devlink *devlink,
1414 				    const char *table_name);
1415 int devlink_dpipe_headers_register(struct devlink *devlink,
1416 				   struct devlink_dpipe_headers *dpipe_headers);
1417 void devlink_dpipe_headers_unregister(struct devlink *devlink);
1418 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
1419 					 const char *table_name);
1420 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
1421 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
1422 				   struct devlink_dpipe_entry *entry);
1423 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
1424 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry);
1425 int devlink_dpipe_action_put(struct sk_buff *skb,
1426 			     struct devlink_dpipe_action *action);
1427 int devlink_dpipe_match_put(struct sk_buff *skb,
1428 			    struct devlink_dpipe_match *match);
1429 extern struct devlink_dpipe_header devlink_dpipe_header_ethernet;
1430 extern struct devlink_dpipe_header devlink_dpipe_header_ipv4;
1431 extern struct devlink_dpipe_header devlink_dpipe_header_ipv6;
1432 
1433 int devlink_resource_register(struct devlink *devlink,
1434 			      const char *resource_name,
1435 			      u64 resource_size,
1436 			      u64 resource_id,
1437 			      u64 parent_resource_id,
1438 			      const struct devlink_resource_size_params *size_params);
1439 void devlink_resources_unregister(struct devlink *devlink,
1440 				  struct devlink_resource *resource);
1441 int devlink_resource_size_get(struct devlink *devlink,
1442 			      u64 resource_id,
1443 			      u64 *p_resource_size);
1444 int devlink_dpipe_table_resource_set(struct devlink *devlink,
1445 				     const char *table_name, u64 resource_id,
1446 				     u64 resource_units);
1447 void devlink_resource_occ_get_register(struct devlink *devlink,
1448 				       u64 resource_id,
1449 				       devlink_resource_occ_get_t *occ_get,
1450 				       void *occ_get_priv);
1451 void devlink_resource_occ_get_unregister(struct devlink *devlink,
1452 					 u64 resource_id);
1453 int devlink_params_register(struct devlink *devlink,
1454 			    const struct devlink_param *params,
1455 			    size_t params_count);
1456 void devlink_params_unregister(struct devlink *devlink,
1457 			       const struct devlink_param *params,
1458 			       size_t params_count);
1459 void devlink_params_publish(struct devlink *devlink);
1460 void devlink_params_unpublish(struct devlink *devlink);
1461 int devlink_port_params_register(struct devlink_port *devlink_port,
1462 				 const struct devlink_param *params,
1463 				 size_t params_count);
1464 void devlink_port_params_unregister(struct devlink_port *devlink_port,
1465 				    const struct devlink_param *params,
1466 				    size_t params_count);
1467 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
1468 				       union devlink_param_value *init_val);
1469 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
1470 				       union devlink_param_value init_val);
1471 int
1472 devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
1473 					u32 param_id,
1474 					union devlink_param_value *init_val);
1475 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
1476 					    u32 param_id,
1477 					    union devlink_param_value init_val);
1478 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
1479 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
1480 				      u32 param_id);
1481 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
1482 				  const char *src);
1483 struct devlink_region *
1484 devlink_region_create(struct devlink *devlink,
1485 		      const struct devlink_region_ops *ops,
1486 		      u32 region_max_snapshots, u64 region_size);
1487 struct devlink_region *
1488 devlink_port_region_create(struct devlink_port *port,
1489 			   const struct devlink_port_region_ops *ops,
1490 			   u32 region_max_snapshots, u64 region_size);
1491 void devlink_region_destroy(struct devlink_region *region);
1492 void devlink_port_region_destroy(struct devlink_region *region);
1493 
1494 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id);
1495 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id);
1496 int devlink_region_snapshot_create(struct devlink_region *region,
1497 				   u8 *data, u32 snapshot_id);
1498 int devlink_info_serial_number_put(struct devlink_info_req *req,
1499 				   const char *sn);
1500 int devlink_info_driver_name_put(struct devlink_info_req *req,
1501 				 const char *name);
1502 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
1503 					 const char *bsn);
1504 int devlink_info_version_fixed_put(struct devlink_info_req *req,
1505 				   const char *version_name,
1506 				   const char *version_value);
1507 int devlink_info_version_stored_put(struct devlink_info_req *req,
1508 				    const char *version_name,
1509 				    const char *version_value);
1510 int devlink_info_version_running_put(struct devlink_info_req *req,
1511 				     const char *version_name,
1512 				     const char *version_value);
1513 
1514 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg);
1515 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg);
1516 
1517 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name);
1518 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg);
1519 
1520 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
1521 				     const char *name);
1522 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg);
1523 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
1524 					const char *name);
1525 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg);
1526 
1527 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value);
1528 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value);
1529 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value);
1530 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value);
1531 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value);
1532 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
1533 			    u16 value_len);
1534 
1535 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
1536 			       bool value);
1537 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
1538 			     u8 value);
1539 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
1540 			      u32 value);
1541 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
1542 			      u64 value);
1543 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
1544 				 const char *value);
1545 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
1546 				 const void *value, u32 value_len);
1547 
1548 struct devlink_health_reporter *
1549 devlink_health_reporter_create(struct devlink *devlink,
1550 			       const struct devlink_health_reporter_ops *ops,
1551 			       u64 graceful_period, void *priv);
1552 
1553 struct devlink_health_reporter *
1554 devlink_port_health_reporter_create(struct devlink_port *port,
1555 				    const struct devlink_health_reporter_ops *ops,
1556 				    u64 graceful_period, void *priv);
1557 
1558 void
1559 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter);
1560 
1561 void
1562 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter);
1563 
1564 void *
1565 devlink_health_reporter_priv(struct devlink_health_reporter *reporter);
1566 int devlink_health_report(struct devlink_health_reporter *reporter,
1567 			  const char *msg, void *priv_ctx);
1568 void
1569 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
1570 				     enum devlink_health_reporter_state state);
1571 void
1572 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter);
1573 
1574 bool devlink_is_reload_failed(const struct devlink *devlink);
1575 void devlink_remote_reload_actions_performed(struct devlink *devlink,
1576 					     enum devlink_reload_limit limit,
1577 					     u32 actions_performed);
1578 
1579 void devlink_flash_update_begin_notify(struct devlink *devlink);
1580 void devlink_flash_update_end_notify(struct devlink *devlink);
1581 void devlink_flash_update_status_notify(struct devlink *devlink,
1582 					const char *status_msg,
1583 					const char *component,
1584 					unsigned long done,
1585 					unsigned long total);
1586 void devlink_flash_update_timeout_notify(struct devlink *devlink,
1587 					 const char *status_msg,
1588 					 const char *component,
1589 					 unsigned long timeout);
1590 
1591 int devlink_traps_register(struct devlink *devlink,
1592 			   const struct devlink_trap *traps,
1593 			   size_t traps_count, void *priv);
1594 void devlink_traps_unregister(struct devlink *devlink,
1595 			      const struct devlink_trap *traps,
1596 			      size_t traps_count);
1597 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
1598 			 void *trap_ctx, struct devlink_port *in_devlink_port,
1599 			 const struct flow_action_cookie *fa_cookie);
1600 void *devlink_trap_ctx_priv(void *trap_ctx);
1601 int devlink_trap_groups_register(struct devlink *devlink,
1602 				 const struct devlink_trap_group *groups,
1603 				 size_t groups_count);
1604 void devlink_trap_groups_unregister(struct devlink *devlink,
1605 				    const struct devlink_trap_group *groups,
1606 				    size_t groups_count);
1607 int
1608 devlink_trap_policers_register(struct devlink *devlink,
1609 			       const struct devlink_trap_policer *policers,
1610 			       size_t policers_count);
1611 void
1612 devlink_trap_policers_unregister(struct devlink *devlink,
1613 				 const struct devlink_trap_policer *policers,
1614 				 size_t policers_count);
1615 
1616 #if IS_ENABLED(CONFIG_NET_DEVLINK)
1617 
1618 void devlink_compat_running_version(struct net_device *dev,
1619 				    char *buf, size_t len);
1620 int devlink_compat_flash_update(struct net_device *dev, const char *file_name);
1621 int devlink_compat_phys_port_name_get(struct net_device *dev,
1622 				      char *name, size_t len);
1623 int devlink_compat_switch_id_get(struct net_device *dev,
1624 				 struct netdev_phys_item_id *ppid);
1625 
1626 #else
1627 
1628 static inline void
1629 devlink_compat_running_version(struct net_device *dev, char *buf, size_t len)
1630 {
1631 }
1632 
1633 static inline int
1634 devlink_compat_flash_update(struct net_device *dev, const char *file_name)
1635 {
1636 	return -EOPNOTSUPP;
1637 }
1638 
1639 static inline int
1640 devlink_compat_phys_port_name_get(struct net_device *dev,
1641 				  char *name, size_t len)
1642 {
1643 	return -EOPNOTSUPP;
1644 }
1645 
1646 static inline int
1647 devlink_compat_switch_id_get(struct net_device *dev,
1648 			     struct netdev_phys_item_id *ppid)
1649 {
1650 	return -EOPNOTSUPP;
1651 }
1652 
1653 #endif
1654 
1655 #endif /* _NET_DEVLINK_H_ */
1656