include/net/devlink.h

   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 <uapi/linux/devlink.h>
  20
  21 struct devlink_ops;
  22
  23 struct devlink {
  24         struct list_head list;
  25         struct list_head port_list;
  26         struct list_head sb_list;
  27         struct list_head dpipe_table_list;
  28         struct list_head resource_list;
  29         struct list_head param_list;
  30         struct list_head region_list;
  31         u32 snapshot_id;
  32         struct list_head reporter_list;
  33         struct mutex reporters_lock; /* protects reporter_list */
  34         struct devlink_dpipe_headers *dpipe_headers;
  35         struct list_head trap_list;
  36         struct list_head trap_group_list;
  37         const struct devlink_ops *ops;
  38         struct device *dev;
  39         possible_net_t _net;
  40         struct mutex lock;
  41         bool reload_failed;
  42         char priv[0] __aligned(NETDEV_ALIGN);
  43 };
  44
  45 struct devlink_port_phys_attrs {
  46         u32 port_number; /* Same value as "split group".
  47                           * A physical port which is visible to the user
  48                           * for a given port flavour.
  49                           */
  50         u32 split_subport_number;
  51 };
  52
  53 struct devlink_port_pci_pf_attrs {
  54         u16 pf; /* Associated PCI PF for this port. */
  55 };
  56
  57 struct devlink_port_pci_vf_attrs {
  58         u16 pf; /* Associated PCI PF for this port. */
  59         u16 vf; /* Associated PCI VF for of the PCI PF for this port. */
  60 };
  61
  62 struct devlink_port_attrs {
  63         u8 set:1,
  64            split:1,
  65            switch_port:1;
  66         enum devlink_port_flavour flavour;
  67         struct netdev_phys_item_id switch_id;
  68         union {
  69                 struct devlink_port_phys_attrs phys;
  70                 struct devlink_port_pci_pf_attrs pci_pf;
  71                 struct devlink_port_pci_vf_attrs pci_vf;
  72         };
  73 };
  74
  75 struct devlink_port {
  76         struct list_head list;
  77         struct list_head param_list;
  78         struct devlink *devlink;
  79         unsigned int index;
  80         bool registered;
  81         spinlock_t type_lock; /* Protects type and type_dev
  82                                * pointer consistency.
  83                                */
  84         enum devlink_port_type type;
  85         enum devlink_port_type desired_type;
  86         void *type_dev;
  87         struct devlink_port_attrs attrs;
  88         struct delayed_work type_warn_dw;
  89 };
  90
  91 struct devlink_sb_pool_info {
  92         enum devlink_sb_pool_type pool_type;
  93         u32 size;
  94         enum devlink_sb_threshold_type threshold_type;
  95         u32 cell_size;
  96 };
  97
  98 /**
  99  * struct devlink_dpipe_field - dpipe field object
 100  * @name: field name
 101  * @id: index inside the headers field array
 102  * @bitwidth: bitwidth
 103  * @mapping_type: mapping type
 104  */
 105 struct devlink_dpipe_field {
 106         const char *name;
 107         unsigned int id;
 108         unsigned int bitwidth;
 109         enum devlink_dpipe_field_mapping_type mapping_type;
 110 };
 111
 112 /**
 113  * struct devlink_dpipe_header - dpipe header object
 114  * @name: header name
 115  * @id: index, global/local detrmined by global bit
 116  * @fields: fields
 117  * @fields_count: number of fields
 118  * @global: indicates if header is shared like most protocol header
 119  *          or driver specific
 120  */
 121 struct devlink_dpipe_header {
 122         const char *name;
 123         unsigned int id;
 124         struct devlink_dpipe_field *fields;
 125         unsigned int fields_count;
 126         bool global;
 127 };
 128
 129 /**
 130  * struct devlink_dpipe_match - represents match operation
 131  * @type: type of match
 132  * @header_index: header index (packets can have several headers of same
 133  *                type like in case of tunnels)
 134  * @header: header
 135  * @fieled_id: field index
 136  */
 137 struct devlink_dpipe_match {
 138         enum devlink_dpipe_match_type type;
 139         unsigned int header_index;
 140         struct devlink_dpipe_header *header;
 141         unsigned int field_id;
 142 };
 143
 144 /**
 145  * struct devlink_dpipe_action - represents action operation
 146  * @type: type of action
 147  * @header_index: header index (packets can have several headers of same
 148  *                type like in case of tunnels)
 149  * @header: header
 150  * @fieled_id: field index
 151  */
 152 struct devlink_dpipe_action {
 153         enum devlink_dpipe_action_type type;
 154         unsigned int header_index;
 155         struct devlink_dpipe_header *header;
 156         unsigned int field_id;
 157 };
 158
 159 /**
 160  * struct devlink_dpipe_value - represents value of match/action
 161  * @action: action
 162  * @match: match
 163  * @mapping_value: in case the field has some mapping this value
 164  *                 specified the mapping value
 165  * @mapping_valid: specify if mapping value is valid
 166  * @value_size: value size
 167  * @value: value
 168  * @mask: bit mask
 169  */
 170 struct devlink_dpipe_value {
 171         union {
 172                 struct devlink_dpipe_action *action;
 173                 struct devlink_dpipe_match *match;
 174         };
 175         unsigned int mapping_value;
 176         bool mapping_valid;
 177         unsigned int value_size;
 178         void *value;
 179         void *mask;
 180 };
 181
 182 /**
 183  * struct devlink_dpipe_entry - table entry object
 184  * @index: index of the entry in the table
 185  * @match_values: match values
 186  * @matche_values_count: count of matches tuples
 187  * @action_values: actions values
 188  * @action_values_count: count of actions values
 189  * @counter: value of counter
 190  * @counter_valid: Specify if value is valid from hardware
 191  */
 192 struct devlink_dpipe_entry {
 193         u64 index;
 194         struct devlink_dpipe_value *match_values;
 195         unsigned int match_values_count;
 196         struct devlink_dpipe_value *action_values;
 197         unsigned int action_values_count;
 198         u64 counter;
 199         bool counter_valid;
 200 };
 201
 202 /**
 203  * struct devlink_dpipe_dump_ctx - context provided to driver in order
 204  *                                 to dump
 205  * @info: info
 206  * @cmd: devlink command
 207  * @skb: skb
 208  * @nest: top attribute
 209  * @hdr: hdr
 210  */
 211 struct devlink_dpipe_dump_ctx {
 212         struct genl_info *info;
 213         enum devlink_command cmd;
 214         struct sk_buff *skb;
 215         struct nlattr *nest;
 216         void *hdr;
 217 };
 218
 219 struct devlink_dpipe_table_ops;
 220
 221 /**
 222  * struct devlink_dpipe_table - table object
 223  * @priv: private
 224  * @name: table name
 225  * @counters_enabled: indicates if counters are active
 226  * @counter_control_extern: indicates if counter control is in dpipe or
 227  *                          external tool
 228  * @resource_valid: Indicate that the resource id is valid
 229  * @resource_id: relative resource this table is related to
 230  * @resource_units: number of resource's unit consumed per table's entry
 231  * @table_ops: table operations
 232  * @rcu: rcu
 233  */
 234 struct devlink_dpipe_table {
 235         void *priv;
 236         struct list_head list;
 237         const char *name;
 238         bool counters_enabled;
 239         bool counter_control_extern;
 240         bool resource_valid;
 241         u64 resource_id;
 242         u64 resource_units;
 243         struct devlink_dpipe_table_ops *table_ops;
 244         struct rcu_head rcu;
 245 };
 246
 247 /**
 248  * struct devlink_dpipe_table_ops - dpipe_table ops
 249  * @actions_dump - dumps all tables actions
 250  * @matches_dump - dumps all tables matches
 251  * @entries_dump - dumps all active entries in the table
 252  * @counters_set_update - when changing the counter status hardware sync
 253  *                        maybe needed to allocate/free counter related
 254  *                        resources
 255  * @size_get - get size
 256  */
 257 struct devlink_dpipe_table_ops {
 258         int (*actions_dump)(void *priv, struct sk_buff *skb);
 259         int (*matches_dump)(void *priv, struct sk_buff *skb);
 260         int (*entries_dump)(void *priv, bool counters_enabled,
 261                             struct devlink_dpipe_dump_ctx *dump_ctx);
 262         int (*counters_set_update)(void *priv, bool enable);
 263         u64 (*size_get)(void *priv);
 264 };
 265
 266 /**
 267  * struct devlink_dpipe_headers - dpipe headers
 268  * @headers - header array can be shared (global bit) or driver specific
 269  * @headers_count - count of headers
 270  */
 271 struct devlink_dpipe_headers {
 272         struct devlink_dpipe_header **headers;
 273         unsigned int headers_count;
 274 };
 275
 276 /**
 277  * struct devlink_resource_size_params - resource's size parameters
 278  * @size_min: minimum size which can be set
 279  * @size_max: maximum size which can be set
 280  * @size_granularity: size granularity
 281  * @size_unit: resource's basic unit
 282  */
 283 struct devlink_resource_size_params {
 284         u64 size_min;
 285         u64 size_max;
 286         u64 size_granularity;
 287         enum devlink_resource_unit unit;
 288 };
 289
 290 static inline void
 291 devlink_resource_size_params_init(struct devlink_resource_size_params *size_params,
 292                                   u64 size_min, u64 size_max,
 293                                   u64 size_granularity,
 294                                   enum devlink_resource_unit unit)
 295 {
 296         size_params->size_min = size_min;
 297         size_params->size_max = size_max;
 298         size_params->size_granularity = size_granularity;
 299         size_params->unit = unit;
 300 }
 301
 302 typedef u64 devlink_resource_occ_get_t(void *priv);
 303
 304 /**
 305  * struct devlink_resource - devlink resource
 306  * @name: name of the resource
 307  * @id: id, per devlink instance
 308  * @size: size of the resource
 309  * @size_new: updated size of the resource, reload is needed
 310  * @size_valid: valid in case the total size of the resource is valid
 311  *              including its children
 312  * @parent: parent resource
 313  * @size_params: size parameters
 314  * @list: parent list
 315  * @resource_list: list of child resources
 316  */
 317 struct devlink_resource {
 318         const char *name;
 319         u64 id;
 320         u64 size;
 321         u64 size_new;
 322         bool size_valid;
 323         struct devlink_resource *parent;
 324         struct devlink_resource_size_params size_params;
 325         struct list_head list;
 326         struct list_head resource_list;
 327         devlink_resource_occ_get_t *occ_get;
 328         void *occ_get_priv;
 329 };
 330
 331 #define DEVLINK_RESOURCE_ID_PARENT_TOP 0
 332
 333 #define __DEVLINK_PARAM_MAX_STRING_VALUE 32
 334 enum devlink_param_type {
 335         DEVLINK_PARAM_TYPE_U8,
 336         DEVLINK_PARAM_TYPE_U16,
 337         DEVLINK_PARAM_TYPE_U32,
 338         DEVLINK_PARAM_TYPE_STRING,
 339         DEVLINK_PARAM_TYPE_BOOL,
 340 };
 341
 342 union devlink_param_value {
 343         u8 vu8;
 344         u16 vu16;
 345         u32 vu32;
 346         char vstr[__DEVLINK_PARAM_MAX_STRING_VALUE];
 347         bool vbool;
 348 };
 349
 350 struct devlink_param_gset_ctx {
 351         union devlink_param_value val;
 352         enum devlink_param_cmode cmode;
 353 };
 354
 355 /**
 356  * struct devlink_param - devlink configuration parameter data
 357  * @name: name of the parameter
 358  * @generic: indicates if the parameter is generic or driver specific
 359  * @type: parameter type
 360  * @supported_cmodes: bitmap of supported configuration modes
 361  * @get: get parameter value, used for runtime and permanent
 362  *       configuration modes
 363  * @set: set parameter value, used for runtime and permanent
 364  *       configuration modes
 365  * @validate: validate input value is applicable (within value range, etc.)
 366  *
 367  * This struct should be used by the driver to fill the data for
 368  * a parameter it registers.
 369  */
 370 struct devlink_param {
 371         u32 id;
 372         const char *name;
 373         bool generic;
 374         enum devlink_param_type type;
 375         unsigned long supported_cmodes;
 376         int (*get)(struct devlink *devlink, u32 id,
 377                    struct devlink_param_gset_ctx *ctx);
 378         int (*set)(struct devlink *devlink, u32 id,
 379                    struct devlink_param_gset_ctx *ctx);
 380         int (*validate)(struct devlink *devlink, u32 id,
 381                         union devlink_param_value val,
 382                         struct netlink_ext_ack *extack);
 383 };
 384
 385 struct devlink_param_item {
 386         struct list_head list;
 387         const struct devlink_param *param;
 388         union devlink_param_value driverinit_value;
 389         bool driverinit_value_valid;
 390         bool published;
 391 };
 392
 393 enum devlink_param_generic_id {
 394         DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
 395         DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
 396         DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
 397         DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
 398         DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
 399         DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
 400         DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
 401         DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
 402         DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
 403
 404         /* add new param generic ids above here*/
 405         __DEVLINK_PARAM_GENERIC_ID_MAX,
 406         DEVLINK_PARAM_GENERIC_ID_MAX = __DEVLINK_PARAM_GENERIC_ID_MAX - 1,
 407 };
 408
 409 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME "internal_error_reset"
 410 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
 411
 412 #define DEVLINK_PARAM_GENERIC_MAX_MACS_NAME "max_macs"
 413 #define DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE DEVLINK_PARAM_TYPE_U32
 414
 415 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME "enable_sriov"
 416 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE DEVLINK_PARAM_TYPE_BOOL
 417
 418 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME "region_snapshot_enable"
 419 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE DEVLINK_PARAM_TYPE_BOOL
 420
 421 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME "ignore_ari"
 422 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE DEVLINK_PARAM_TYPE_BOOL
 423
 424 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME "msix_vec_per_pf_max"
 425 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE DEVLINK_PARAM_TYPE_U32
 426
 427 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME "msix_vec_per_pf_min"
 428 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE DEVLINK_PARAM_TYPE_U32
 429
 430 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME "fw_load_policy"
 431 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE DEVLINK_PARAM_TYPE_U8
 432
 433 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME \
 434         "reset_dev_on_drv_probe"
 435 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE DEVLINK_PARAM_TYPE_U8
 436
 437 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)      \
 438 {                                                                       \
 439         .id = DEVLINK_PARAM_GENERIC_ID_##_id,                           \
 440         .name = DEVLINK_PARAM_GENERIC_##_id##_NAME,                     \
 441         .type = DEVLINK_PARAM_GENERIC_##_id##_TYPE,                     \
 442         .generic = true,                                                \
 443         .supported_cmodes = _cmodes,                                    \
 444         .get = _get,                                                    \
 445         .set = _set,                                                    \
 446         .validate = _validate,                                          \
 447 }
 448
 449 #define DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, _get, _set, _validate) \
 450 {                                                                       \
 451         .id = _id,                                                      \
 452         .name = _name,                                                  \
 453         .type = _type,                                                  \
 454         .supported_cmodes = _cmodes,                                    \
 455         .get = _get,                                                    \
 456         .set = _set,                                                    \
 457         .validate = _validate,                                          \
 458 }
 459
 460 /* Part number, identifier of board design */
 461 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_ID   "board.id"
 462 /* Revision of board design */
 463 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_REV  "board.rev"
 464 /* Maker of the board */
 465 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE  "board.manufacture"
 466
 467 /* Part number, identifier of asic design */
 468 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_ID    "asic.id"
 469 /* Revision of asic design */
 470 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_REV   "asic.rev"
 471
 472 /* Overall FW version */
 473 #define DEVLINK_INFO_VERSION_GENERIC_FW         "fw"
 474 /* Control processor FW version */
 475 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT    "fw.mgmt"
 476 /* Data path microcode controlling high-speed packet processing */
 477 #define DEVLINK_INFO_VERSION_GENERIC_FW_APP     "fw.app"
 478 /* UNDI software version */
 479 #define DEVLINK_INFO_VERSION_GENERIC_FW_UNDI    "fw.undi"
 480 /* NCSI support/handler version */
 481 #define DEVLINK_INFO_VERSION_GENERIC_FW_NCSI    "fw.ncsi"
 482
 483 struct devlink_region;
 484 struct devlink_info_req;
 485
 486 typedef void devlink_snapshot_data_dest_t(const void *data);
 487
 488 struct devlink_fmsg;
 489 struct devlink_health_reporter;
 490
 491 enum devlink_health_reporter_state {
 492         DEVLINK_HEALTH_REPORTER_STATE_HEALTHY,
 493         DEVLINK_HEALTH_REPORTER_STATE_ERROR,
 494 };
 495
 496 /**
 497  * struct devlink_health_reporter_ops - Reporter operations
 498  * @name: reporter name
 499  * @recover: callback to recover from reported error
 500  *           if priv_ctx is NULL, run a full recover
 501  * @dump: callback to dump an object
 502  *        if priv_ctx is NULL, run a full dump
 503  * @diagnose: callback to diagnose the current status
 504  */
 505
 506 struct devlink_health_reporter_ops {
 507         char *name;
 508         int (*recover)(struct devlink_health_reporter *reporter,
 509                        void *priv_ctx);
 510         int (*dump)(struct devlink_health_reporter *reporter,
 511                     struct devlink_fmsg *fmsg, void *priv_ctx);
 512         int (*diagnose)(struct devlink_health_reporter *reporter,
 513                         struct devlink_fmsg *fmsg);
 514 };
 515
 516 /**
 517  * struct devlink_trap_group - Immutable packet trap group attributes.
 518  * @name: Trap group name.
 519  * @id: Trap group identifier.
 520  * @generic: Whether the trap group is generic or not.
 521  *
 522  * Describes immutable attributes of packet trap groups that drivers register
 523  * with devlink.
 524  */
 525 struct devlink_trap_group {
 526         const char *name;
 527         u16 id;
 528         bool generic;
 529 };
 530
 531 #define DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT    BIT(0)
 532
 533 /**
 534  * struct devlink_trap - Immutable packet trap attributes.
 535  * @type: Trap type.
 536  * @init_action: Initial trap action.
 537  * @generic: Whether the trap is generic or not.
 538  * @id: Trap identifier.
 539  * @name: Trap name.
 540  * @group: Immutable packet trap group attributes.
 541  * @metadata_cap: Metadata types that can be provided by the trap.
 542  *
 543  * Describes immutable attributes of packet traps that drivers register with
 544  * devlink.
 545  */
 546 struct devlink_trap {
 547         enum devlink_trap_type type;
 548         enum devlink_trap_action init_action;
 549         bool generic;
 550         u16 id;
 551         const char *name;
 552         struct devlink_trap_group group;
 553         u32 metadata_cap;
 554 };
 555
 556 /* All traps must be documented in
 557  * Documentation/networking/devlink-trap.rst
 558  */
 559 enum devlink_trap_generic_id {
 560         DEVLINK_TRAP_GENERIC_ID_SMAC_MC,
 561         DEVLINK_TRAP_GENERIC_ID_VLAN_TAG_MISMATCH,
 562         DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER,
 563         DEVLINK_TRAP_GENERIC_ID_INGRESS_STP_FILTER,
 564         DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
 565         DEVLINK_TRAP_GENERIC_ID_PORT_LOOPBACK_FILTER,
 566         DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
 567         DEVLINK_TRAP_GENERIC_ID_TTL_ERROR,
 568         DEVLINK_TRAP_GENERIC_ID_TAIL_DROP,
 569
 570         /* Add new generic trap IDs above */
 571         __DEVLINK_TRAP_GENERIC_ID_MAX,
 572         DEVLINK_TRAP_GENERIC_ID_MAX = __DEVLINK_TRAP_GENERIC_ID_MAX - 1,
 573 };
 574
 575 /* All trap groups must be documented in
 576  * Documentation/networking/devlink-trap.rst
 577  */
 578 enum devlink_trap_group_generic_id {
 579         DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS,
 580         DEVLINK_TRAP_GROUP_GENERIC_ID_L3_DROPS,
 581         DEVLINK_TRAP_GROUP_GENERIC_ID_BUFFER_DROPS,
 582
 583         /* Add new generic trap group IDs above */
 584         __DEVLINK_TRAP_GROUP_GENERIC_ID_MAX,
 585         DEVLINK_TRAP_GROUP_GENERIC_ID_MAX =
 586                 __DEVLINK_TRAP_GROUP_GENERIC_ID_MAX - 1,
 587 };
 588
 589 #define DEVLINK_TRAP_GENERIC_NAME_SMAC_MC \
 590         "source_mac_is_multicast"
 591 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_TAG_MISMATCH \
 592         "vlan_tag_mismatch"
 593 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_VLAN_FILTER \
 594         "ingress_vlan_filter"
 595 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_STP_FILTER \
 596         "ingress_spanning_tree_filter"
 597 #define DEVLINK_TRAP_GENERIC_NAME_EMPTY_TX_LIST \
 598         "port_list_is_empty"
 599 #define DEVLINK_TRAP_GENERIC_NAME_PORT_LOOPBACK_FILTER \
 600         "port_loopback_filter"
 601 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_ROUTE \
 602         "blackhole_route"
 603 #define DEVLINK_TRAP_GENERIC_NAME_TTL_ERROR \
 604         "ttl_value_is_too_small"
 605 #define DEVLINK_TRAP_GENERIC_NAME_TAIL_DROP \
 606         "tail_drop"
 607
 608 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
 609         "l2_drops"
 610 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_DROPS \
 611         "l3_drops"
 612 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BUFFER_DROPS \
 613         "buffer_drops"
 614
 615 #define DEVLINK_TRAP_GENERIC(_type, _init_action, _id, _group, _metadata_cap) \
 616         {                                                                     \
 617                 .type = DEVLINK_TRAP_TYPE_##_type,                            \
 618                 .init_action = DEVLINK_TRAP_ACTION_##_init_action,            \
 619                 .generic = true,                                              \
 620                 .id = DEVLINK_TRAP_GENERIC_ID_##_id,                          \
 621                 .name = DEVLINK_TRAP_GENERIC_NAME_##_id,                      \
 622                 .group = _group,                                              \
 623                 .metadata_cap = _metadata_cap,                                \
 624         }
 625
 626 #define DEVLINK_TRAP_DRIVER(_type, _init_action, _id, _name, _group,          \
 627                             _metadata_cap)                                    \
 628         {                                                                     \
 629                 .type = DEVLINK_TRAP_TYPE_##_type,                            \
 630                 .init_action = DEVLINK_TRAP_ACTION_##_init_action,            \
 631                 .generic = false,                                             \
 632                 .id = _id,                                                    \
 633                 .name = _name,                                                \
 634                 .group = _group,                                              \
 635                 .metadata_cap = _metadata_cap,                                \
 636         }
 637
 638 #define DEVLINK_TRAP_GROUP_GENERIC(_id)                                       \
 639         {                                                                     \
 640                 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id,                \
 641                 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id,                    \
 642                 .generic = true,                                              \
 643         }
 644
 645 struct devlink_ops {
 646         int (*reload_down)(struct devlink *devlink,
 647                            struct netlink_ext_ack *extack);
 648         int (*reload_up)(struct devlink *devlink,
 649                          struct netlink_ext_ack *extack);
 650         int (*port_type_set)(struct devlink_port *devlink_port,
 651                              enum devlink_port_type port_type);
 652         int (*port_split)(struct devlink *devlink, unsigned int port_index,
 653                           unsigned int count, struct netlink_ext_ack *extack);
 654         int (*port_unsplit)(struct devlink *devlink, unsigned int port_index,
 655                             struct netlink_ext_ack *extack);
 656         int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
 657                            u16 pool_index,
 658                            struct devlink_sb_pool_info *pool_info);
 659         int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
 660                            u16 pool_index, u32 size,
 661                            enum devlink_sb_threshold_type threshold_type,
 662                            struct netlink_ext_ack *extack);
 663         int (*sb_port_pool_get)(struct devlink_port *devlink_port,
 664                                 unsigned int sb_index, u16 pool_index,
 665                                 u32 *p_threshold);
 666         int (*sb_port_pool_set)(struct devlink_port *devlink_port,
 667                                 unsigned int sb_index, u16 pool_index,
 668                                 u32 threshold, struct netlink_ext_ack *extack);
 669         int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
 670                                    unsigned int sb_index,
 671                                    u16 tc_index,
 672                                    enum devlink_sb_pool_type pool_type,
 673                                    u16 *p_pool_index, u32 *p_threshold);
 674         int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
 675                                    unsigned int sb_index,
 676                                    u16 tc_index,
 677                                    enum devlink_sb_pool_type pool_type,
 678                                    u16 pool_index, u32 threshold,
 679                                    struct netlink_ext_ack *extack);
 680         int (*sb_occ_snapshot)(struct devlink *devlink,
 681                                unsigned int sb_index);
 682         int (*sb_occ_max_clear)(struct devlink *devlink,
 683                                 unsigned int sb_index);
 684         int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
 685                                     unsigned int sb_index, u16 pool_index,
 686                                     u32 *p_cur, u32 *p_max);
 687         int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
 688                                        unsigned int sb_index,
 689                                        u16 tc_index,
 690                                        enum devlink_sb_pool_type pool_type,
 691                                        u32 *p_cur, u32 *p_max);
 692
 693         int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
 694         int (*eswitch_mode_set)(struct devlink *devlink, u16 mode,
 695                                 struct netlink_ext_ack *extack);
 696         int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
 697         int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode,
 698                                        struct netlink_ext_ack *extack);
 699         int (*eswitch_encap_mode_get)(struct devlink *devlink,
 700                                       enum devlink_eswitch_encap_mode *p_encap_mode);
 701         int (*eswitch_encap_mode_set)(struct devlink *devlink,
 702                                       enum devlink_eswitch_encap_mode encap_mode,
 703                                       struct netlink_ext_ack *extack);
 704         int (*info_get)(struct devlink *devlink, struct devlink_info_req *req,
 705                         struct netlink_ext_ack *extack);
 706         int (*flash_update)(struct devlink *devlink, const char *file_name,
 707                             const char *component,
 708                             struct netlink_ext_ack *extack);
 709         /**
 710          * @trap_init: Trap initialization function.
 711          *
 712          * Should be used by device drivers to initialize the trap in the
 713          * underlying device. Drivers should also store the provided trap
 714          * context, so that they could efficiently pass it to
 715          * devlink_trap_report() when the trap is triggered.
 716          */
 717         int (*trap_init)(struct devlink *devlink,
 718                          const struct devlink_trap *trap, void *trap_ctx);
 719         /**
 720          * @trap_fini: Trap de-initialization function.
 721          *
 722          * Should be used by device drivers to de-initialize the trap in the
 723          * underlying device.
 724          */
 725         void (*trap_fini)(struct devlink *devlink,
 726                           const struct devlink_trap *trap, void *trap_ctx);
 727         /**
 728          * @trap_action_set: Trap action set function.
 729          */
 730         int (*trap_action_set)(struct devlink *devlink,
 731                                const struct devlink_trap *trap,
 732                                enum devlink_trap_action action);
 733         /**
 734          * @trap_group_init: Trap group initialization function.
 735          *
 736          * Should be used by device drivers to initialize the trap group in the
 737          * underlying device.
 738          */
 739         int (*trap_group_init)(struct devlink *devlink,
 740                                const struct devlink_trap_group *group);
 741 };
 742
 743 static inline void *devlink_priv(struct devlink *devlink)
 744 {
 745         BUG_ON(!devlink);
 746         return &devlink->priv;
 747 }
 748
 749 static inline struct devlink *priv_to_devlink(void *priv)
 750 {
 751         BUG_ON(!priv);
 752         return container_of(priv, struct devlink, priv);
 753 }
 754
 755 static inline struct devlink_port *
 756 netdev_to_devlink_port(struct net_device *dev)
 757 {
 758         if (dev->netdev_ops->ndo_get_devlink_port)
 759                 return dev->netdev_ops->ndo_get_devlink_port(dev);
 760         return NULL;
 761 }
 762
 763 static inline struct devlink *netdev_to_devlink(struct net_device *dev)
 764 {
 765         struct devlink_port *devlink_port = netdev_to_devlink_port(dev);
 766
 767         if (devlink_port)
 768                 return devlink_port->devlink;
 769         return NULL;
 770 }
 771
 772 struct ib_device;
 773
 774 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
 775 int devlink_register(struct devlink *devlink, struct device *dev);
 776 void devlink_unregister(struct devlink *devlink);
 777 void devlink_free(struct devlink *devlink);
 778 int devlink_port_register(struct devlink *devlink,
 779                           struct devlink_port *devlink_port,
 780                           unsigned int port_index);
 781 void devlink_port_unregister(struct devlink_port *devlink_port);
 782 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
 783                                struct net_device *netdev);
 784 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
 785                               struct ib_device *ibdev);
 786 void devlink_port_type_clear(struct devlink_port *devlink_port);
 787 void devlink_port_attrs_set(struct devlink_port *devlink_port,
 788                             enum devlink_port_flavour flavour,
 789                             u32 port_number, bool split,
 790                             u32 split_subport_number,
 791                             const unsigned char *switch_id,
 792                             unsigned char switch_id_len);
 793 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
 794                                    const unsigned char *switch_id,
 795                                    unsigned char switch_id_len, u16 pf);
 796 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
 797                                    const unsigned char *switch_id,
 798                                    unsigned char switch_id_len,
 799                                    u16 pf, u16 vf);
 800 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
 801                         u32 size, u16 ingress_pools_count,
 802                         u16 egress_pools_count, u16 ingress_tc_count,
 803                         u16 egress_tc_count);
 804 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
 805 int devlink_dpipe_table_register(struct devlink *devlink,
 806                                  const char *table_name,
 807                                  struct devlink_dpipe_table_ops *table_ops,
 808                                  void *priv, bool counter_control_extern);
 809 void devlink_dpipe_table_unregister(struct devlink *devlink,
 810                                     const char *table_name);
 811 int devlink_dpipe_headers_register(struct devlink *devlink,
 812                                    struct devlink_dpipe_headers *dpipe_headers);
 813 void devlink_dpipe_headers_unregister(struct devlink *devlink);
 814 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
 815                                          const char *table_name);
 816 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
 817 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
 818                                    struct devlink_dpipe_entry *entry);
 819 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
 820 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry);
 821 int devlink_dpipe_action_put(struct sk_buff *skb,
 822                              struct devlink_dpipe_action *action);
 823 int devlink_dpipe_match_put(struct sk_buff *skb,
 824                             struct devlink_dpipe_match *match);
 825 extern struct devlink_dpipe_header devlink_dpipe_header_ethernet;
 826 extern struct devlink_dpipe_header devlink_dpipe_header_ipv4;
 827 extern struct devlink_dpipe_header devlink_dpipe_header_ipv6;
 828
 829 int devlink_resource_register(struct devlink *devlink,
 830                               const char *resource_name,
 831                               u64 resource_size,
 832                               u64 resource_id,
 833                               u64 parent_resource_id,
 834                               const struct devlink_resource_size_params *size_params);
 835 void devlink_resources_unregister(struct devlink *devlink,
 836                                   struct devlink_resource *resource);
 837 int devlink_resource_size_get(struct devlink *devlink,
 838                               u64 resource_id,
 839                               u64 *p_resource_size);
 840 int devlink_dpipe_table_resource_set(struct devlink *devlink,
 841                                      const char *table_name, u64 resource_id,
 842                                      u64 resource_units);
 843 void devlink_resource_occ_get_register(struct devlink *devlink,
 844                                        u64 resource_id,
 845                                        devlink_resource_occ_get_t *occ_get,
 846                                        void *occ_get_priv);
 847 void devlink_resource_occ_get_unregister(struct devlink *devlink,
 848                                          u64 resource_id);
 849 int devlink_params_register(struct devlink *devlink,
 850                             const struct devlink_param *params,
 851                             size_t params_count);
 852 void devlink_params_unregister(struct devlink *devlink,
 853                                const struct devlink_param *params,
 854                                size_t params_count);
 855 void devlink_params_publish(struct devlink *devlink);
 856 void devlink_params_unpublish(struct devlink *devlink);
 857 int devlink_port_params_register(struct devlink_port *devlink_port,
 858                                  const struct devlink_param *params,
 859                                  size_t params_count);
 860 void devlink_port_params_unregister(struct devlink_port *devlink_port,
 861                                     const struct devlink_param *params,
 862                                     size_t params_count);
 863 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
 864                                        union devlink_param_value *init_val);
 865 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
 866                                        union devlink_param_value init_val);
 867 int
 868 devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
 869                                         u32 param_id,
 870                                         union devlink_param_value *init_val);
 871 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
 872                                             u32 param_id,
 873                                             union devlink_param_value init_val);
 874 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
 875 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
 876                                       u32 param_id);
 877 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
 878                                   const char *src);
 879 struct devlink_region *devlink_region_create(struct devlink *devlink,
 880                                              const char *region_name,
 881                                              u32 region_max_snapshots,
 882                                              u64 region_size);
 883 void devlink_region_destroy(struct devlink_region *region);
 884 u32 devlink_region_shapshot_id_get(struct devlink *devlink);
 885 int devlink_region_snapshot_create(struct devlink_region *region,
 886                                    u8 *data, u32 snapshot_id,
 887                                    devlink_snapshot_data_dest_t *data_destructor);
 888 int devlink_info_serial_number_put(struct devlink_info_req *req,
 889                                    const char *sn);
 890 int devlink_info_driver_name_put(struct devlink_info_req *req,
 891                                  const char *name);
 892 int devlink_info_version_fixed_put(struct devlink_info_req *req,
 893                                    const char *version_name,
 894                                    const char *version_value);
 895 int devlink_info_version_stored_put(struct devlink_info_req *req,
 896                                     const char *version_name,
 897                                     const char *version_value);
 898 int devlink_info_version_running_put(struct devlink_info_req *req,
 899                                      const char *version_name,
 900                                      const char *version_value);
 901
 902 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg);
 903 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg);
 904
 905 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name);
 906 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg);
 907
 908 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
 909                                      const char *name);
 910 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg);
 911
 912 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value);
 913 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value);
 914 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value);
 915 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value);
 916 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value);
 917 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
 918                             u16 value_len);
 919
 920 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
 921                                bool value);
 922 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
 923                              u8 value);
 924 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
 925                               u32 value);
 926 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
 927                               u64 value);
 928 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
 929                                  const char *value);
 930 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
 931                                  const void *value, u16 value_len);
 932
 933 struct devlink_health_reporter *
 934 devlink_health_reporter_create(struct devlink *devlink,
 935                                const struct devlink_health_reporter_ops *ops,
 936                                u64 graceful_period, bool auto_recover,
 937                                void *priv);
 938 void
 939 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter);
 940
 941 void *
 942 devlink_health_reporter_priv(struct devlink_health_reporter *reporter);
 943 int devlink_health_report(struct devlink_health_reporter *reporter,
 944                           const char *msg, void *priv_ctx);
 945 void
 946 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
 947                                      enum devlink_health_reporter_state state);
 948
 949 bool devlink_is_reload_failed(const struct devlink *devlink);
 950
 951 void devlink_flash_update_begin_notify(struct devlink *devlink);
 952 void devlink_flash_update_end_notify(struct devlink *devlink);
 953 void devlink_flash_update_status_notify(struct devlink *devlink,
 954                                         const char *status_msg,
 955                                         const char *component,
 956                                         unsigned long done,
 957                                         unsigned long total);
 958
 959 int devlink_traps_register(struct devlink *devlink,
 960                            const struct devlink_trap *traps,
 961                            size_t traps_count, void *priv);
 962 void devlink_traps_unregister(struct devlink *devlink,
 963                               const struct devlink_trap *traps,
 964                               size_t traps_count);
 965 void devlink_trap_report(struct devlink *devlink,
 966                          struct sk_buff *skb, void *trap_ctx,
 967                          struct devlink_port *in_devlink_port);
 968 void *devlink_trap_ctx_priv(void *trap_ctx);
 969
 970 #if IS_ENABLED(CONFIG_NET_DEVLINK)
 971
 972 void devlink_compat_running_version(struct net_device *dev,
 973                                     char *buf, size_t len);
 974 int devlink_compat_flash_update(struct net_device *dev, const char *file_name);
 975 int devlink_compat_phys_port_name_get(struct net_device *dev,
 976                                       char *name, size_t len);
 977 int devlink_compat_switch_id_get(struct net_device *dev,
 978                                  struct netdev_phys_item_id *ppid);
 979
 980 #else
 981
 982 static inline void
 983 devlink_compat_running_version(struct net_device *dev, char *buf, size_t len)
 984 {
 985 }
 986
 987 static inline int
 988 devlink_compat_flash_update(struct net_device *dev, const char *file_name)
 989 {
 990         return -EOPNOTSUPP;
 991 }
 992
 993 static inline int
 994 devlink_compat_phys_port_name_get(struct net_device *dev,
 995                                   char *name, size_t len)
 996 {
 997         return -EOPNOTSUPP;
 998 }
 999
1000 static inline int
1001 devlink_compat_switch_id_get(struct net_device *dev,
1002                              struct netdev_phys_item_id *ppid)
1003 {
1004         return -EOPNOTSUPP;
1005 }
1006
1007 #endif
1008
1009 #endif /* _NET_DEVLINK_H_ */