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0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  * include/net/devlink.h - Network physical device Netlink interface
0004  * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
0005  * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
0006  */
0007 #ifndef _NET_DEVLINK_H_
0008 #define _NET_DEVLINK_H_
0009 
0010 #include <linux/device.h>
0011 #include <linux/slab.h>
0012 #include <linux/gfp.h>
0013 #include <linux/list.h>
0014 #include <linux/netdevice.h>
0015 #include <linux/spinlock.h>
0016 #include <linux/workqueue.h>
0017 #include <linux/refcount.h>
0018 #include <net/net_namespace.h>
0019 #include <net/flow_offload.h>
0020 #include <uapi/linux/devlink.h>
0021 #include <linux/xarray.h>
0022 #include <linux/firmware.h>
0023 
0024 struct devlink;
0025 struct devlink_linecard;
0026 
0027 struct devlink_port_phys_attrs {
0028     u32 port_number; /* Same value as "split group".
0029               * A physical port which is visible to the user
0030               * for a given port flavour.
0031               */
0032     u32 split_subport_number; /* If the port is split, this is the number of subport. */
0033 };
0034 
0035 /**
0036  * struct devlink_port_pci_pf_attrs - devlink port's PCI PF attributes
0037  * @controller: Associated controller number
0038  * @pf: Associated PCI PF number for this port.
0039  * @external: when set, indicates if a port is for an external controller
0040  */
0041 struct devlink_port_pci_pf_attrs {
0042     u32 controller;
0043     u16 pf;
0044     u8 external:1;
0045 };
0046 
0047 /**
0048  * struct devlink_port_pci_vf_attrs - devlink port's PCI VF attributes
0049  * @controller: Associated controller number
0050  * @pf: Associated PCI PF number for this port.
0051  * @vf: Associated PCI VF for of the PCI PF for this port.
0052  * @external: when set, indicates if a port is for an external controller
0053  */
0054 struct devlink_port_pci_vf_attrs {
0055     u32 controller;
0056     u16 pf;
0057     u16 vf;
0058     u8 external:1;
0059 };
0060 
0061 /**
0062  * struct devlink_port_pci_sf_attrs - devlink port's PCI SF attributes
0063  * @controller: Associated controller number
0064  * @sf: Associated PCI SF for of the PCI PF for this port.
0065  * @pf: Associated PCI PF number for this port.
0066  * @external: when set, indicates if a port is for an external controller
0067  */
0068 struct devlink_port_pci_sf_attrs {
0069     u32 controller;
0070     u32 sf;
0071     u16 pf;
0072     u8 external:1;
0073 };
0074 
0075 /**
0076  * struct devlink_port_attrs - devlink port object
0077  * @flavour: flavour of the port
0078  * @split: indicates if this is split port
0079  * @splittable: indicates if the port can be split.
0080  * @lanes: maximum number of lanes the port supports. 0 value is not passed to netlink.
0081  * @switch_id: if the port is part of switch, this is buffer with ID, otherwise this is NULL
0082  * @phys: physical port attributes
0083  * @pci_pf: PCI PF port attributes
0084  * @pci_vf: PCI VF port attributes
0085  * @pci_sf: PCI SF port attributes
0086  */
0087 struct devlink_port_attrs {
0088     u8 split:1,
0089        splittable:1;
0090     u32 lanes;
0091     enum devlink_port_flavour flavour;
0092     struct netdev_phys_item_id switch_id;
0093     union {
0094         struct devlink_port_phys_attrs phys;
0095         struct devlink_port_pci_pf_attrs pci_pf;
0096         struct devlink_port_pci_vf_attrs pci_vf;
0097         struct devlink_port_pci_sf_attrs pci_sf;
0098     };
0099 };
0100 
0101 struct devlink_rate {
0102     struct list_head list;
0103     enum devlink_rate_type type;
0104     struct devlink *devlink;
0105     void *priv;
0106     u64 tx_share;
0107     u64 tx_max;
0108 
0109     struct devlink_rate *parent;
0110     union {
0111         struct devlink_port *devlink_port;
0112         struct {
0113             char *name;
0114             refcount_t refcnt;
0115         };
0116     };
0117 };
0118 
0119 struct devlink_port {
0120     struct list_head list;
0121     struct list_head param_list;
0122     struct list_head region_list;
0123     struct devlink *devlink;
0124     unsigned int index;
0125     spinlock_t type_lock; /* Protects type and type_dev
0126                    * pointer consistency.
0127                    */
0128     enum devlink_port_type type;
0129     enum devlink_port_type desired_type;
0130     void *type_dev;
0131     struct devlink_port_attrs attrs;
0132     u8 attrs_set:1,
0133        switch_port:1;
0134     struct delayed_work type_warn_dw;
0135     struct list_head reporter_list;
0136     struct mutex reporters_lock; /* Protects reporter_list */
0137 
0138     struct devlink_rate *devlink_rate;
0139     struct devlink_linecard *linecard;
0140 };
0141 
0142 struct devlink_port_new_attrs {
0143     enum devlink_port_flavour flavour;
0144     unsigned int port_index;
0145     u32 controller;
0146     u32 sfnum;
0147     u16 pfnum;
0148     u8 port_index_valid:1,
0149        controller_valid:1,
0150        sfnum_valid:1;
0151 };
0152 
0153 /**
0154  * struct devlink_linecard_ops - Linecard operations
0155  * @provision: callback to provision the linecard slot with certain
0156  *         type of linecard. As a result of this operation,
0157  *         driver is expected to eventually (could be after
0158  *         the function call returns) call one of:
0159  *         devlink_linecard_provision_set()
0160  *         devlink_linecard_provision_fail()
0161  * @unprovision: callback to unprovision the linecard slot. As a result
0162  *       of this operation, driver is expected to eventually
0163  *       (could be after the function call returns) call
0164  *           devlink_linecard_provision_clear()
0165  *           devlink_linecard_provision_fail()
0166  * @same_provision: callback to ask the driver if linecard is already
0167  *                  provisioned in the same way user asks this linecard to be
0168  *                  provisioned.
0169  * @types_count: callback to get number of supported types
0170  * @types_get: callback to get next type in list
0171  */
0172 struct devlink_linecard_ops {
0173     int (*provision)(struct devlink_linecard *linecard, void *priv,
0174              const char *type, const void *type_priv,
0175              struct netlink_ext_ack *extack);
0176     int (*unprovision)(struct devlink_linecard *linecard, void *priv,
0177                struct netlink_ext_ack *extack);
0178     bool (*same_provision)(struct devlink_linecard *linecard, void *priv,
0179                    const char *type, const void *type_priv);
0180     unsigned int (*types_count)(struct devlink_linecard *linecard,
0181                     void *priv);
0182     void (*types_get)(struct devlink_linecard *linecard,
0183               void *priv, unsigned int index, const char **type,
0184               const void **type_priv);
0185 };
0186 
0187 struct devlink_sb_pool_info {
0188     enum devlink_sb_pool_type pool_type;
0189     u32 size;
0190     enum devlink_sb_threshold_type threshold_type;
0191     u32 cell_size;
0192 };
0193 
0194 /**
0195  * struct devlink_dpipe_field - dpipe field object
0196  * @name: field name
0197  * @id: index inside the headers field array
0198  * @bitwidth: bitwidth
0199  * @mapping_type: mapping type
0200  */
0201 struct devlink_dpipe_field {
0202     const char *name;
0203     unsigned int id;
0204     unsigned int bitwidth;
0205     enum devlink_dpipe_field_mapping_type mapping_type;
0206 };
0207 
0208 /**
0209  * struct devlink_dpipe_header - dpipe header object
0210  * @name: header name
0211  * @id: index, global/local detrmined by global bit
0212  * @fields: fields
0213  * @fields_count: number of fields
0214  * @global: indicates if header is shared like most protocol header
0215  *      or driver specific
0216  */
0217 struct devlink_dpipe_header {
0218     const char *name;
0219     unsigned int id;
0220     struct devlink_dpipe_field *fields;
0221     unsigned int fields_count;
0222     bool global;
0223 };
0224 
0225 /**
0226  * struct devlink_dpipe_match - represents match operation
0227  * @type: type of match
0228  * @header_index: header index (packets can have several headers of same
0229  *        type like in case of tunnels)
0230  * @header: header
0231  * @fieled_id: field index
0232  */
0233 struct devlink_dpipe_match {
0234     enum devlink_dpipe_match_type type;
0235     unsigned int header_index;
0236     struct devlink_dpipe_header *header;
0237     unsigned int field_id;
0238 };
0239 
0240 /**
0241  * struct devlink_dpipe_action - represents action operation
0242  * @type: type of action
0243  * @header_index: header index (packets can have several headers of same
0244  *        type like in case of tunnels)
0245  * @header: header
0246  * @fieled_id: field index
0247  */
0248 struct devlink_dpipe_action {
0249     enum devlink_dpipe_action_type type;
0250     unsigned int header_index;
0251     struct devlink_dpipe_header *header;
0252     unsigned int field_id;
0253 };
0254 
0255 /**
0256  * struct devlink_dpipe_value - represents value of match/action
0257  * @action: action
0258  * @match: match
0259  * @mapping_value: in case the field has some mapping this value
0260  *                 specified the mapping value
0261  * @mapping_valid: specify if mapping value is valid
0262  * @value_size: value size
0263  * @value: value
0264  * @mask: bit mask
0265  */
0266 struct devlink_dpipe_value {
0267     union {
0268         struct devlink_dpipe_action *action;
0269         struct devlink_dpipe_match *match;
0270     };
0271     unsigned int mapping_value;
0272     bool mapping_valid;
0273     unsigned int value_size;
0274     void *value;
0275     void *mask;
0276 };
0277 
0278 /**
0279  * struct devlink_dpipe_entry - table entry object
0280  * @index: index of the entry in the table
0281  * @match_values: match values
0282  * @matche_values_count: count of matches tuples
0283  * @action_values: actions values
0284  * @action_values_count: count of actions values
0285  * @counter: value of counter
0286  * @counter_valid: Specify if value is valid from hardware
0287  */
0288 struct devlink_dpipe_entry {
0289     u64 index;
0290     struct devlink_dpipe_value *match_values;
0291     unsigned int match_values_count;
0292     struct devlink_dpipe_value *action_values;
0293     unsigned int action_values_count;
0294     u64 counter;
0295     bool counter_valid;
0296 };
0297 
0298 /**
0299  * struct devlink_dpipe_dump_ctx - context provided to driver in order
0300  *                 to dump
0301  * @info: info
0302  * @cmd: devlink command
0303  * @skb: skb
0304  * @nest: top attribute
0305  * @hdr: hdr
0306  */
0307 struct devlink_dpipe_dump_ctx {
0308     struct genl_info *info;
0309     enum devlink_command cmd;
0310     struct sk_buff *skb;
0311     struct nlattr *nest;
0312     void *hdr;
0313 };
0314 
0315 struct devlink_dpipe_table_ops;
0316 
0317 /**
0318  * struct devlink_dpipe_table - table object
0319  * @priv: private
0320  * @name: table name
0321  * @counters_enabled: indicates if counters are active
0322  * @counter_control_extern: indicates if counter control is in dpipe or
0323  *              external tool
0324  * @resource_valid: Indicate that the resource id is valid
0325  * @resource_id: relative resource this table is related to
0326  * @resource_units: number of resource's unit consumed per table's entry
0327  * @table_ops: table operations
0328  * @rcu: rcu
0329  */
0330 struct devlink_dpipe_table {
0331     void *priv;
0332     struct list_head list;
0333     const char *name;
0334     bool counters_enabled;
0335     bool counter_control_extern;
0336     bool resource_valid;
0337     u64 resource_id;
0338     u64 resource_units;
0339     struct devlink_dpipe_table_ops *table_ops;
0340     struct rcu_head rcu;
0341 };
0342 
0343 /**
0344  * struct devlink_dpipe_table_ops - dpipe_table ops
0345  * @actions_dump - dumps all tables actions
0346  * @matches_dump - dumps all tables matches
0347  * @entries_dump - dumps all active entries in the table
0348  * @counters_set_update - when changing the counter status hardware sync
0349  *            maybe needed to allocate/free counter related
0350  *            resources
0351  * @size_get - get size
0352  */
0353 struct devlink_dpipe_table_ops {
0354     int (*actions_dump)(void *priv, struct sk_buff *skb);
0355     int (*matches_dump)(void *priv, struct sk_buff *skb);
0356     int (*entries_dump)(void *priv, bool counters_enabled,
0357                 struct devlink_dpipe_dump_ctx *dump_ctx);
0358     int (*counters_set_update)(void *priv, bool enable);
0359     u64 (*size_get)(void *priv);
0360 };
0361 
0362 /**
0363  * struct devlink_dpipe_headers - dpipe headers
0364  * @headers - header array can be shared (global bit) or driver specific
0365  * @headers_count - count of headers
0366  */
0367 struct devlink_dpipe_headers {
0368     struct devlink_dpipe_header **headers;
0369     unsigned int headers_count;
0370 };
0371 
0372 /**
0373  * struct devlink_resource_size_params - resource's size parameters
0374  * @size_min: minimum size which can be set
0375  * @size_max: maximum size which can be set
0376  * @size_granularity: size granularity
0377  * @size_unit: resource's basic unit
0378  */
0379 struct devlink_resource_size_params {
0380     u64 size_min;
0381     u64 size_max;
0382     u64 size_granularity;
0383     enum devlink_resource_unit unit;
0384 };
0385 
0386 static inline void
0387 devlink_resource_size_params_init(struct devlink_resource_size_params *size_params,
0388                   u64 size_min, u64 size_max,
0389                   u64 size_granularity,
0390                   enum devlink_resource_unit unit)
0391 {
0392     size_params->size_min = size_min;
0393     size_params->size_max = size_max;
0394     size_params->size_granularity = size_granularity;
0395     size_params->unit = unit;
0396 }
0397 
0398 typedef u64 devlink_resource_occ_get_t(void *priv);
0399 
0400 #define DEVLINK_RESOURCE_ID_PARENT_TOP 0
0401 
0402 #define DEVLINK_RESOURCE_GENERIC_NAME_PORTS "physical_ports"
0403 
0404 #define __DEVLINK_PARAM_MAX_STRING_VALUE 32
0405 enum devlink_param_type {
0406     DEVLINK_PARAM_TYPE_U8,
0407     DEVLINK_PARAM_TYPE_U16,
0408     DEVLINK_PARAM_TYPE_U32,
0409     DEVLINK_PARAM_TYPE_STRING,
0410     DEVLINK_PARAM_TYPE_BOOL,
0411 };
0412 
0413 union devlink_param_value {
0414     u8 vu8;
0415     u16 vu16;
0416     u32 vu32;
0417     char vstr[__DEVLINK_PARAM_MAX_STRING_VALUE];
0418     bool vbool;
0419 };
0420 
0421 struct devlink_param_gset_ctx {
0422     union devlink_param_value val;
0423     enum devlink_param_cmode cmode;
0424 };
0425 
0426 /**
0427  * struct devlink_flash_notify - devlink dev flash notify data
0428  * @status_msg: current status string
0429  * @component: firmware component being updated
0430  * @done: amount of work completed of total amount
0431  * @total: amount of work expected to be done
0432  * @timeout: expected max timeout in seconds
0433  *
0434  * These are values to be given to userland to be displayed in order
0435  * to show current activity in a firmware update process.
0436  */
0437 struct devlink_flash_notify {
0438     const char *status_msg;
0439     const char *component;
0440     unsigned long done;
0441     unsigned long total;
0442     unsigned long timeout;
0443 };
0444 
0445 /**
0446  * struct devlink_param - devlink configuration parameter data
0447  * @name: name of the parameter
0448  * @generic: indicates if the parameter is generic or driver specific
0449  * @type: parameter type
0450  * @supported_cmodes: bitmap of supported configuration modes
0451  * @get: get parameter value, used for runtime and permanent
0452  *       configuration modes
0453  * @set: set parameter value, used for runtime and permanent
0454  *       configuration modes
0455  * @validate: validate input value is applicable (within value range, etc.)
0456  *
0457  * This struct should be used by the driver to fill the data for
0458  * a parameter it registers.
0459  */
0460 struct devlink_param {
0461     u32 id;
0462     const char *name;
0463     bool generic;
0464     enum devlink_param_type type;
0465     unsigned long supported_cmodes;
0466     int (*get)(struct devlink *devlink, u32 id,
0467            struct devlink_param_gset_ctx *ctx);
0468     int (*set)(struct devlink *devlink, u32 id,
0469            struct devlink_param_gset_ctx *ctx);
0470     int (*validate)(struct devlink *devlink, u32 id,
0471             union devlink_param_value val,
0472             struct netlink_ext_ack *extack);
0473 };
0474 
0475 struct devlink_param_item {
0476     struct list_head list;
0477     const struct devlink_param *param;
0478     union devlink_param_value driverinit_value;
0479     bool driverinit_value_valid;
0480 };
0481 
0482 enum devlink_param_generic_id {
0483     DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
0484     DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
0485     DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
0486     DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
0487     DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
0488     DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
0489     DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
0490     DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
0491     DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
0492     DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
0493     DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
0494     DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
0495     DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
0496     DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
0497     DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
0498     DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
0499     DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
0500 
0501     /* add new param generic ids above here*/
0502     __DEVLINK_PARAM_GENERIC_ID_MAX,
0503     DEVLINK_PARAM_GENERIC_ID_MAX = __DEVLINK_PARAM_GENERIC_ID_MAX - 1,
0504 };
0505 
0506 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME "internal_error_reset"
0507 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
0508 
0509 #define DEVLINK_PARAM_GENERIC_MAX_MACS_NAME "max_macs"
0510 #define DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE DEVLINK_PARAM_TYPE_U32
0511 
0512 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME "enable_sriov"
0513 #define DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE DEVLINK_PARAM_TYPE_BOOL
0514 
0515 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME "region_snapshot_enable"
0516 #define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE DEVLINK_PARAM_TYPE_BOOL
0517 
0518 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME "ignore_ari"
0519 #define DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE DEVLINK_PARAM_TYPE_BOOL
0520 
0521 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME "msix_vec_per_pf_max"
0522 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE DEVLINK_PARAM_TYPE_U32
0523 
0524 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME "msix_vec_per_pf_min"
0525 #define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE DEVLINK_PARAM_TYPE_U32
0526 
0527 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME "fw_load_policy"
0528 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE DEVLINK_PARAM_TYPE_U8
0529 
0530 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME \
0531     "reset_dev_on_drv_probe"
0532 #define DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE DEVLINK_PARAM_TYPE_U8
0533 
0534 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME "enable_roce"
0535 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE DEVLINK_PARAM_TYPE_BOOL
0536 
0537 #define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME "enable_remote_dev_reset"
0538 #define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
0539 
0540 #define DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME "enable_eth"
0541 #define DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE DEVLINK_PARAM_TYPE_BOOL
0542 
0543 #define DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME "enable_rdma"
0544 #define DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE DEVLINK_PARAM_TYPE_BOOL
0545 
0546 #define DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME "enable_vnet"
0547 #define DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE DEVLINK_PARAM_TYPE_BOOL
0548 
0549 #define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME "enable_iwarp"
0550 #define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE DEVLINK_PARAM_TYPE_BOOL
0551 
0552 #define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME "io_eq_size"
0553 #define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32
0554 
0555 #define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME "event_eq_size"
0556 #define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32
0557 
0558 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)  \
0559 {                                   \
0560     .id = DEVLINK_PARAM_GENERIC_ID_##_id,               \
0561     .name = DEVLINK_PARAM_GENERIC_##_id##_NAME,         \
0562     .type = DEVLINK_PARAM_GENERIC_##_id##_TYPE,         \
0563     .generic = true,                        \
0564     .supported_cmodes = _cmodes,                    \
0565     .get = _get,                            \
0566     .set = _set,                            \
0567     .validate = _validate,                      \
0568 }
0569 
0570 #define DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, _get, _set, _validate) \
0571 {                                   \
0572     .id = _id,                          \
0573     .name = _name,                          \
0574     .type = _type,                          \
0575     .supported_cmodes = _cmodes,                    \
0576     .get = _get,                            \
0577     .set = _set,                            \
0578     .validate = _validate,                      \
0579 }
0580 
0581 /* Part number, identifier of board design */
0582 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_ID   "board.id"
0583 /* Revision of board design */
0584 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_REV  "board.rev"
0585 /* Maker of the board */
0586 #define DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE  "board.manufacture"
0587 
0588 /* Part number, identifier of asic design */
0589 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_ID    "asic.id"
0590 /* Revision of asic design */
0591 #define DEVLINK_INFO_VERSION_GENERIC_ASIC_REV   "asic.rev"
0592 
0593 /* Overall FW version */
0594 #define DEVLINK_INFO_VERSION_GENERIC_FW     "fw"
0595 /* Control processor FW version */
0596 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT    "fw.mgmt"
0597 /* FW interface specification version */
0598 #define DEVLINK_INFO_VERSION_GENERIC_FW_MGMT_API    "fw.mgmt.api"
0599 /* Data path microcode controlling high-speed packet processing */
0600 #define DEVLINK_INFO_VERSION_GENERIC_FW_APP "fw.app"
0601 /* UNDI software version */
0602 #define DEVLINK_INFO_VERSION_GENERIC_FW_UNDI    "fw.undi"
0603 /* NCSI support/handler version */
0604 #define DEVLINK_INFO_VERSION_GENERIC_FW_NCSI    "fw.ncsi"
0605 /* FW parameter set id */
0606 #define DEVLINK_INFO_VERSION_GENERIC_FW_PSID    "fw.psid"
0607 /* RoCE FW version */
0608 #define DEVLINK_INFO_VERSION_GENERIC_FW_ROCE    "fw.roce"
0609 /* Firmware bundle identifier */
0610 #define DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID   "fw.bundle_id"
0611 
0612 /**
0613  * struct devlink_flash_update_params - Flash Update parameters
0614  * @fw: pointer to the firmware data to update from
0615  * @component: the flash component to update
0616  *
0617  * With the exception of fw, drivers must opt-in to parameters by
0618  * setting the appropriate bit in the supported_flash_update_params field in
0619  * their devlink_ops structure.
0620  */
0621 struct devlink_flash_update_params {
0622     const struct firmware *fw;
0623     const char *component;
0624     u32 overwrite_mask;
0625 };
0626 
0627 #define DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT      BIT(0)
0628 #define DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK BIT(1)
0629 
0630 struct devlink_region;
0631 struct devlink_info_req;
0632 
0633 /**
0634  * struct devlink_region_ops - Region operations
0635  * @name: region name
0636  * @destructor: callback used to free snapshot memory when deleting
0637  * @snapshot: callback to request an immediate snapshot. On success,
0638  *            the data variable must be updated to point to the snapshot data.
0639  *            The function will be called while the devlink instance lock is
0640  *            held.
0641  * @priv: Pointer to driver private data for the region operation
0642  */
0643 struct devlink_region_ops {
0644     const char *name;
0645     void (*destructor)(const void *data);
0646     int (*snapshot)(struct devlink *devlink,
0647             const struct devlink_region_ops *ops,
0648             struct netlink_ext_ack *extack,
0649             u8 **data);
0650     void *priv;
0651 };
0652 
0653 /**
0654  * struct devlink_port_region_ops - Region operations for a port
0655  * @name: region name
0656  * @destructor: callback used to free snapshot memory when deleting
0657  * @snapshot: callback to request an immediate snapshot. On success,
0658  *            the data variable must be updated to point to the snapshot data.
0659  *            The function will be called while the devlink instance lock is
0660  *            held.
0661  * @priv: Pointer to driver private data for the region operation
0662  */
0663 struct devlink_port_region_ops {
0664     const char *name;
0665     void (*destructor)(const void *data);
0666     int (*snapshot)(struct devlink_port *port,
0667             const struct devlink_port_region_ops *ops,
0668             struct netlink_ext_ack *extack,
0669             u8 **data);
0670     void *priv;
0671 };
0672 
0673 struct devlink_fmsg;
0674 struct devlink_health_reporter;
0675 
0676 enum devlink_health_reporter_state {
0677     DEVLINK_HEALTH_REPORTER_STATE_HEALTHY,
0678     DEVLINK_HEALTH_REPORTER_STATE_ERROR,
0679 };
0680 
0681 /**
0682  * struct devlink_health_reporter_ops - Reporter operations
0683  * @name: reporter name
0684  * @recover: callback to recover from reported error
0685  *           if priv_ctx is NULL, run a full recover
0686  * @dump: callback to dump an object
0687  *        if priv_ctx is NULL, run a full dump
0688  * @diagnose: callback to diagnose the current status
0689  * @test: callback to trigger a test event
0690  */
0691 
0692 struct devlink_health_reporter_ops {
0693     char *name;
0694     int (*recover)(struct devlink_health_reporter *reporter,
0695                void *priv_ctx, struct netlink_ext_ack *extack);
0696     int (*dump)(struct devlink_health_reporter *reporter,
0697             struct devlink_fmsg *fmsg, void *priv_ctx,
0698             struct netlink_ext_ack *extack);
0699     int (*diagnose)(struct devlink_health_reporter *reporter,
0700             struct devlink_fmsg *fmsg,
0701             struct netlink_ext_ack *extack);
0702     int (*test)(struct devlink_health_reporter *reporter,
0703             struct netlink_ext_ack *extack);
0704 };
0705 
0706 /**
0707  * struct devlink_trap_metadata - Packet trap metadata.
0708  * @trap_name: Trap name.
0709  * @trap_group_name: Trap group name.
0710  * @input_dev: Input netdevice.
0711  * @dev_tracker: refcount tracker for @input_dev.
0712  * @fa_cookie: Flow action user cookie.
0713  * @trap_type: Trap type.
0714  */
0715 struct devlink_trap_metadata {
0716     const char *trap_name;
0717     const char *trap_group_name;
0718 
0719     struct net_device *input_dev;
0720     netdevice_tracker dev_tracker;
0721 
0722     const struct flow_action_cookie *fa_cookie;
0723     enum devlink_trap_type trap_type;
0724 };
0725 
0726 /**
0727  * struct devlink_trap_policer - Immutable packet trap policer attributes.
0728  * @id: Policer identifier.
0729  * @init_rate: Initial rate in packets / sec.
0730  * @init_burst: Initial burst size in packets.
0731  * @max_rate: Maximum rate.
0732  * @min_rate: Minimum rate.
0733  * @max_burst: Maximum burst size.
0734  * @min_burst: Minimum burst size.
0735  *
0736  * Describes immutable attributes of packet trap policers that drivers register
0737  * with devlink.
0738  */
0739 struct devlink_trap_policer {
0740     u32 id;
0741     u64 init_rate;
0742     u64 init_burst;
0743     u64 max_rate;
0744     u64 min_rate;
0745     u64 max_burst;
0746     u64 min_burst;
0747 };
0748 
0749 /**
0750  * struct devlink_trap_group - Immutable packet trap group attributes.
0751  * @name: Trap group name.
0752  * @id: Trap group identifier.
0753  * @generic: Whether the trap group is generic or not.
0754  * @init_policer_id: Initial policer identifier.
0755  *
0756  * Describes immutable attributes of packet trap groups that drivers register
0757  * with devlink.
0758  */
0759 struct devlink_trap_group {
0760     const char *name;
0761     u16 id;
0762     bool generic;
0763     u32 init_policer_id;
0764 };
0765 
0766 #define DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT    BIT(0)
0767 #define DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE  BIT(1)
0768 
0769 /**
0770  * struct devlink_trap - Immutable packet trap attributes.
0771  * @type: Trap type.
0772  * @init_action: Initial trap action.
0773  * @generic: Whether the trap is generic or not.
0774  * @id: Trap identifier.
0775  * @name: Trap name.
0776  * @init_group_id: Initial group identifier.
0777  * @metadata_cap: Metadata types that can be provided by the trap.
0778  *
0779  * Describes immutable attributes of packet traps that drivers register with
0780  * devlink.
0781  */
0782 struct devlink_trap {
0783     enum devlink_trap_type type;
0784     enum devlink_trap_action init_action;
0785     bool generic;
0786     u16 id;
0787     const char *name;
0788     u16 init_group_id;
0789     u32 metadata_cap;
0790 };
0791 
0792 /* All traps must be documented in
0793  * Documentation/networking/devlink/devlink-trap.rst
0794  */
0795 enum devlink_trap_generic_id {
0796     DEVLINK_TRAP_GENERIC_ID_SMAC_MC,
0797     DEVLINK_TRAP_GENERIC_ID_VLAN_TAG_MISMATCH,
0798     DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER,
0799     DEVLINK_TRAP_GENERIC_ID_INGRESS_STP_FILTER,
0800     DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
0801     DEVLINK_TRAP_GENERIC_ID_PORT_LOOPBACK_FILTER,
0802     DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
0803     DEVLINK_TRAP_GENERIC_ID_TTL_ERROR,
0804     DEVLINK_TRAP_GENERIC_ID_TAIL_DROP,
0805     DEVLINK_TRAP_GENERIC_ID_NON_IP_PACKET,
0806     DEVLINK_TRAP_GENERIC_ID_UC_DIP_MC_DMAC,
0807     DEVLINK_TRAP_GENERIC_ID_DIP_LB,
0808     DEVLINK_TRAP_GENERIC_ID_SIP_MC,
0809     DEVLINK_TRAP_GENERIC_ID_SIP_LB,
0810     DEVLINK_TRAP_GENERIC_ID_CORRUPTED_IP_HDR,
0811     DEVLINK_TRAP_GENERIC_ID_IPV4_SIP_BC,
0812     DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_RESERVED_SCOPE,
0813     DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE,
0814     DEVLINK_TRAP_GENERIC_ID_MTU_ERROR,
0815     DEVLINK_TRAP_GENERIC_ID_UNRESOLVED_NEIGH,
0816     DEVLINK_TRAP_GENERIC_ID_RPF,
0817     DEVLINK_TRAP_GENERIC_ID_REJECT_ROUTE,
0818     DEVLINK_TRAP_GENERIC_ID_IPV4_LPM_UNICAST_MISS,
0819     DEVLINK_TRAP_GENERIC_ID_IPV6_LPM_UNICAST_MISS,
0820     DEVLINK_TRAP_GENERIC_ID_NON_ROUTABLE,
0821     DEVLINK_TRAP_GENERIC_ID_DECAP_ERROR,
0822     DEVLINK_TRAP_GENERIC_ID_OVERLAY_SMAC_MC,
0823     DEVLINK_TRAP_GENERIC_ID_INGRESS_FLOW_ACTION_DROP,
0824     DEVLINK_TRAP_GENERIC_ID_EGRESS_FLOW_ACTION_DROP,
0825     DEVLINK_TRAP_GENERIC_ID_STP,
0826     DEVLINK_TRAP_GENERIC_ID_LACP,
0827     DEVLINK_TRAP_GENERIC_ID_LLDP,
0828     DEVLINK_TRAP_GENERIC_ID_IGMP_QUERY,
0829     DEVLINK_TRAP_GENERIC_ID_IGMP_V1_REPORT,
0830     DEVLINK_TRAP_GENERIC_ID_IGMP_V2_REPORT,
0831     DEVLINK_TRAP_GENERIC_ID_IGMP_V3_REPORT,
0832     DEVLINK_TRAP_GENERIC_ID_IGMP_V2_LEAVE,
0833     DEVLINK_TRAP_GENERIC_ID_MLD_QUERY,
0834     DEVLINK_TRAP_GENERIC_ID_MLD_V1_REPORT,
0835     DEVLINK_TRAP_GENERIC_ID_MLD_V2_REPORT,
0836     DEVLINK_TRAP_GENERIC_ID_MLD_V1_DONE,
0837     DEVLINK_TRAP_GENERIC_ID_IPV4_DHCP,
0838     DEVLINK_TRAP_GENERIC_ID_IPV6_DHCP,
0839     DEVLINK_TRAP_GENERIC_ID_ARP_REQUEST,
0840     DEVLINK_TRAP_GENERIC_ID_ARP_RESPONSE,
0841     DEVLINK_TRAP_GENERIC_ID_ARP_OVERLAY,
0842     DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_SOLICIT,
0843     DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_ADVERT,
0844     DEVLINK_TRAP_GENERIC_ID_IPV4_BFD,
0845     DEVLINK_TRAP_GENERIC_ID_IPV6_BFD,
0846     DEVLINK_TRAP_GENERIC_ID_IPV4_OSPF,
0847     DEVLINK_TRAP_GENERIC_ID_IPV6_OSPF,
0848     DEVLINK_TRAP_GENERIC_ID_IPV4_BGP,
0849     DEVLINK_TRAP_GENERIC_ID_IPV6_BGP,
0850     DEVLINK_TRAP_GENERIC_ID_IPV4_VRRP,
0851     DEVLINK_TRAP_GENERIC_ID_IPV6_VRRP,
0852     DEVLINK_TRAP_GENERIC_ID_IPV4_PIM,
0853     DEVLINK_TRAP_GENERIC_ID_IPV6_PIM,
0854     DEVLINK_TRAP_GENERIC_ID_UC_LB,
0855     DEVLINK_TRAP_GENERIC_ID_LOCAL_ROUTE,
0856     DEVLINK_TRAP_GENERIC_ID_EXTERNAL_ROUTE,
0857     DEVLINK_TRAP_GENERIC_ID_IPV6_UC_DIP_LINK_LOCAL_SCOPE,
0858     DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_NODES,
0859     DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_ROUTERS,
0860     DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_SOLICIT,
0861     DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ADVERT,
0862     DEVLINK_TRAP_GENERIC_ID_IPV6_REDIRECT,
0863     DEVLINK_TRAP_GENERIC_ID_IPV4_ROUTER_ALERT,
0864     DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ALERT,
0865     DEVLINK_TRAP_GENERIC_ID_PTP_EVENT,
0866     DEVLINK_TRAP_GENERIC_ID_PTP_GENERAL,
0867     DEVLINK_TRAP_GENERIC_ID_FLOW_ACTION_SAMPLE,
0868     DEVLINK_TRAP_GENERIC_ID_FLOW_ACTION_TRAP,
0869     DEVLINK_TRAP_GENERIC_ID_EARLY_DROP,
0870     DEVLINK_TRAP_GENERIC_ID_VXLAN_PARSING,
0871     DEVLINK_TRAP_GENERIC_ID_LLC_SNAP_PARSING,
0872     DEVLINK_TRAP_GENERIC_ID_VLAN_PARSING,
0873     DEVLINK_TRAP_GENERIC_ID_PPPOE_PPP_PARSING,
0874     DEVLINK_TRAP_GENERIC_ID_MPLS_PARSING,
0875     DEVLINK_TRAP_GENERIC_ID_ARP_PARSING,
0876     DEVLINK_TRAP_GENERIC_ID_IP_1_PARSING,
0877     DEVLINK_TRAP_GENERIC_ID_IP_N_PARSING,
0878     DEVLINK_TRAP_GENERIC_ID_GRE_PARSING,
0879     DEVLINK_TRAP_GENERIC_ID_UDP_PARSING,
0880     DEVLINK_TRAP_GENERIC_ID_TCP_PARSING,
0881     DEVLINK_TRAP_GENERIC_ID_IPSEC_PARSING,
0882     DEVLINK_TRAP_GENERIC_ID_SCTP_PARSING,
0883     DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING,
0884     DEVLINK_TRAP_GENERIC_ID_GTP_PARSING,
0885     DEVLINK_TRAP_GENERIC_ID_ESP_PARSING,
0886     DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_NEXTHOP,
0887     DEVLINK_TRAP_GENERIC_ID_DMAC_FILTER,
0888 
0889     /* Add new generic trap IDs above */
0890     __DEVLINK_TRAP_GENERIC_ID_MAX,
0891     DEVLINK_TRAP_GENERIC_ID_MAX = __DEVLINK_TRAP_GENERIC_ID_MAX - 1,
0892 };
0893 
0894 /* All trap groups must be documented in
0895  * Documentation/networking/devlink/devlink-trap.rst
0896  */
0897 enum devlink_trap_group_generic_id {
0898     DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS,
0899     DEVLINK_TRAP_GROUP_GENERIC_ID_L3_DROPS,
0900     DEVLINK_TRAP_GROUP_GENERIC_ID_L3_EXCEPTIONS,
0901     DEVLINK_TRAP_GROUP_GENERIC_ID_BUFFER_DROPS,
0902     DEVLINK_TRAP_GROUP_GENERIC_ID_TUNNEL_DROPS,
0903     DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_DROPS,
0904     DEVLINK_TRAP_GROUP_GENERIC_ID_STP,
0905     DEVLINK_TRAP_GROUP_GENERIC_ID_LACP,
0906     DEVLINK_TRAP_GROUP_GENERIC_ID_LLDP,
0907     DEVLINK_TRAP_GROUP_GENERIC_ID_MC_SNOOPING,
0908     DEVLINK_TRAP_GROUP_GENERIC_ID_DHCP,
0909     DEVLINK_TRAP_GROUP_GENERIC_ID_NEIGH_DISCOVERY,
0910     DEVLINK_TRAP_GROUP_GENERIC_ID_BFD,
0911     DEVLINK_TRAP_GROUP_GENERIC_ID_OSPF,
0912     DEVLINK_TRAP_GROUP_GENERIC_ID_BGP,
0913     DEVLINK_TRAP_GROUP_GENERIC_ID_VRRP,
0914     DEVLINK_TRAP_GROUP_GENERIC_ID_PIM,
0915     DEVLINK_TRAP_GROUP_GENERIC_ID_UC_LB,
0916     DEVLINK_TRAP_GROUP_GENERIC_ID_LOCAL_DELIVERY,
0917     DEVLINK_TRAP_GROUP_GENERIC_ID_EXTERNAL_DELIVERY,
0918     DEVLINK_TRAP_GROUP_GENERIC_ID_IPV6,
0919     DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_EVENT,
0920     DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_GENERAL,
0921     DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_SAMPLE,
0922     DEVLINK_TRAP_GROUP_GENERIC_ID_ACL_TRAP,
0923     DEVLINK_TRAP_GROUP_GENERIC_ID_PARSER_ERROR_DROPS,
0924 
0925     /* Add new generic trap group IDs above */
0926     __DEVLINK_TRAP_GROUP_GENERIC_ID_MAX,
0927     DEVLINK_TRAP_GROUP_GENERIC_ID_MAX =
0928         __DEVLINK_TRAP_GROUP_GENERIC_ID_MAX - 1,
0929 };
0930 
0931 #define DEVLINK_TRAP_GENERIC_NAME_SMAC_MC \
0932     "source_mac_is_multicast"
0933 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_TAG_MISMATCH \
0934     "vlan_tag_mismatch"
0935 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_VLAN_FILTER \
0936     "ingress_vlan_filter"
0937 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_STP_FILTER \
0938     "ingress_spanning_tree_filter"
0939 #define DEVLINK_TRAP_GENERIC_NAME_EMPTY_TX_LIST \
0940     "port_list_is_empty"
0941 #define DEVLINK_TRAP_GENERIC_NAME_PORT_LOOPBACK_FILTER \
0942     "port_loopback_filter"
0943 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_ROUTE \
0944     "blackhole_route"
0945 #define DEVLINK_TRAP_GENERIC_NAME_TTL_ERROR \
0946     "ttl_value_is_too_small"
0947 #define DEVLINK_TRAP_GENERIC_NAME_TAIL_DROP \
0948     "tail_drop"
0949 #define DEVLINK_TRAP_GENERIC_NAME_NON_IP_PACKET \
0950     "non_ip"
0951 #define DEVLINK_TRAP_GENERIC_NAME_UC_DIP_MC_DMAC \
0952     "uc_dip_over_mc_dmac"
0953 #define DEVLINK_TRAP_GENERIC_NAME_DIP_LB \
0954     "dip_is_loopback_address"
0955 #define DEVLINK_TRAP_GENERIC_NAME_SIP_MC \
0956     "sip_is_mc"
0957 #define DEVLINK_TRAP_GENERIC_NAME_SIP_LB \
0958     "sip_is_loopback_address"
0959 #define DEVLINK_TRAP_GENERIC_NAME_CORRUPTED_IP_HDR \
0960     "ip_header_corrupted"
0961 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_SIP_BC \
0962     "ipv4_sip_is_limited_bc"
0963 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_RESERVED_SCOPE \
0964     "ipv6_mc_dip_reserved_scope"
0965 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE \
0966     "ipv6_mc_dip_interface_local_scope"
0967 #define DEVLINK_TRAP_GENERIC_NAME_MTU_ERROR \
0968     "mtu_value_is_too_small"
0969 #define DEVLINK_TRAP_GENERIC_NAME_UNRESOLVED_NEIGH \
0970     "unresolved_neigh"
0971 #define DEVLINK_TRAP_GENERIC_NAME_RPF \
0972     "mc_reverse_path_forwarding"
0973 #define DEVLINK_TRAP_GENERIC_NAME_REJECT_ROUTE \
0974     "reject_route"
0975 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_LPM_UNICAST_MISS \
0976     "ipv4_lpm_miss"
0977 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_LPM_UNICAST_MISS \
0978     "ipv6_lpm_miss"
0979 #define DEVLINK_TRAP_GENERIC_NAME_NON_ROUTABLE \
0980     "non_routable_packet"
0981 #define DEVLINK_TRAP_GENERIC_NAME_DECAP_ERROR \
0982     "decap_error"
0983 #define DEVLINK_TRAP_GENERIC_NAME_OVERLAY_SMAC_MC \
0984     "overlay_smac_is_mc"
0985 #define DEVLINK_TRAP_GENERIC_NAME_INGRESS_FLOW_ACTION_DROP \
0986     "ingress_flow_action_drop"
0987 #define DEVLINK_TRAP_GENERIC_NAME_EGRESS_FLOW_ACTION_DROP \
0988     "egress_flow_action_drop"
0989 #define DEVLINK_TRAP_GENERIC_NAME_STP \
0990     "stp"
0991 #define DEVLINK_TRAP_GENERIC_NAME_LACP \
0992     "lacp"
0993 #define DEVLINK_TRAP_GENERIC_NAME_LLDP \
0994     "lldp"
0995 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_QUERY \
0996     "igmp_query"
0997 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V1_REPORT \
0998     "igmp_v1_report"
0999 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V2_REPORT \
1000     "igmp_v2_report"
1001 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V3_REPORT \
1002     "igmp_v3_report"
1003 #define DEVLINK_TRAP_GENERIC_NAME_IGMP_V2_LEAVE \
1004     "igmp_v2_leave"
1005 #define DEVLINK_TRAP_GENERIC_NAME_MLD_QUERY \
1006     "mld_query"
1007 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_REPORT \
1008     "mld_v1_report"
1009 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V2_REPORT \
1010     "mld_v2_report"
1011 #define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_DONE \
1012     "mld_v1_done"
1013 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_DHCP \
1014     "ipv4_dhcp"
1015 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DHCP \
1016     "ipv6_dhcp"
1017 #define DEVLINK_TRAP_GENERIC_NAME_ARP_REQUEST \
1018     "arp_request"
1019 #define DEVLINK_TRAP_GENERIC_NAME_ARP_RESPONSE \
1020     "arp_response"
1021 #define DEVLINK_TRAP_GENERIC_NAME_ARP_OVERLAY \
1022     "arp_overlay"
1023 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_SOLICIT \
1024     "ipv6_neigh_solicit"
1025 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_ADVERT \
1026     "ipv6_neigh_advert"
1027 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_BFD \
1028     "ipv4_bfd"
1029 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_BFD \
1030     "ipv6_bfd"
1031 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_OSPF \
1032     "ipv4_ospf"
1033 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_OSPF \
1034     "ipv6_ospf"
1035 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_BGP \
1036     "ipv4_bgp"
1037 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_BGP \
1038     "ipv6_bgp"
1039 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_VRRP \
1040     "ipv4_vrrp"
1041 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_VRRP \
1042     "ipv6_vrrp"
1043 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_PIM \
1044     "ipv4_pim"
1045 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_PIM \
1046     "ipv6_pim"
1047 #define DEVLINK_TRAP_GENERIC_NAME_UC_LB \
1048     "uc_loopback"
1049 #define DEVLINK_TRAP_GENERIC_NAME_LOCAL_ROUTE \
1050     "local_route"
1051 #define DEVLINK_TRAP_GENERIC_NAME_EXTERNAL_ROUTE \
1052     "external_route"
1053 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_UC_DIP_LINK_LOCAL_SCOPE \
1054     "ipv6_uc_dip_link_local_scope"
1055 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_NODES \
1056     "ipv6_dip_all_nodes"
1057 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_ROUTERS \
1058     "ipv6_dip_all_routers"
1059 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_SOLICIT \
1060     "ipv6_router_solicit"
1061 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ADVERT \
1062     "ipv6_router_advert"
1063 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_REDIRECT \
1064     "ipv6_redirect"
1065 #define DEVLINK_TRAP_GENERIC_NAME_IPV4_ROUTER_ALERT \
1066     "ipv4_router_alert"
1067 #define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ALERT \
1068     "ipv6_router_alert"
1069 #define DEVLINK_TRAP_GENERIC_NAME_PTP_EVENT \
1070     "ptp_event"
1071 #define DEVLINK_TRAP_GENERIC_NAME_PTP_GENERAL \
1072     "ptp_general"
1073 #define DEVLINK_TRAP_GENERIC_NAME_FLOW_ACTION_SAMPLE \
1074     "flow_action_sample"
1075 #define DEVLINK_TRAP_GENERIC_NAME_FLOW_ACTION_TRAP \
1076     "flow_action_trap"
1077 #define DEVLINK_TRAP_GENERIC_NAME_EARLY_DROP \
1078     "early_drop"
1079 #define DEVLINK_TRAP_GENERIC_NAME_VXLAN_PARSING \
1080     "vxlan_parsing"
1081 #define DEVLINK_TRAP_GENERIC_NAME_LLC_SNAP_PARSING \
1082     "llc_snap_parsing"
1083 #define DEVLINK_TRAP_GENERIC_NAME_VLAN_PARSING \
1084     "vlan_parsing"
1085 #define DEVLINK_TRAP_GENERIC_NAME_PPPOE_PPP_PARSING \
1086     "pppoe_ppp_parsing"
1087 #define DEVLINK_TRAP_GENERIC_NAME_MPLS_PARSING \
1088     "mpls_parsing"
1089 #define DEVLINK_TRAP_GENERIC_NAME_ARP_PARSING \
1090     "arp_parsing"
1091 #define DEVLINK_TRAP_GENERIC_NAME_IP_1_PARSING \
1092     "ip_1_parsing"
1093 #define DEVLINK_TRAP_GENERIC_NAME_IP_N_PARSING \
1094     "ip_n_parsing"
1095 #define DEVLINK_TRAP_GENERIC_NAME_GRE_PARSING \
1096     "gre_parsing"
1097 #define DEVLINK_TRAP_GENERIC_NAME_UDP_PARSING \
1098     "udp_parsing"
1099 #define DEVLINK_TRAP_GENERIC_NAME_TCP_PARSING \
1100     "tcp_parsing"
1101 #define DEVLINK_TRAP_GENERIC_NAME_IPSEC_PARSING \
1102     "ipsec_parsing"
1103 #define DEVLINK_TRAP_GENERIC_NAME_SCTP_PARSING \
1104     "sctp_parsing"
1105 #define DEVLINK_TRAP_GENERIC_NAME_DCCP_PARSING \
1106     "dccp_parsing"
1107 #define DEVLINK_TRAP_GENERIC_NAME_GTP_PARSING \
1108     "gtp_parsing"
1109 #define DEVLINK_TRAP_GENERIC_NAME_ESP_PARSING \
1110     "esp_parsing"
1111 #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_NEXTHOP \
1112     "blackhole_nexthop"
1113 #define DEVLINK_TRAP_GENERIC_NAME_DMAC_FILTER \
1114     "dmac_filter"
1115 
1116 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
1117     "l2_drops"
1118 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_DROPS \
1119     "l3_drops"
1120 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L3_EXCEPTIONS \
1121     "l3_exceptions"
1122 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BUFFER_DROPS \
1123     "buffer_drops"
1124 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_TUNNEL_DROPS \
1125     "tunnel_drops"
1126 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_DROPS \
1127     "acl_drops"
1128 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_STP \
1129     "stp"
1130 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LACP \
1131     "lacp"
1132 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LLDP \
1133     "lldp"
1134 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_MC_SNOOPING  \
1135     "mc_snooping"
1136 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_DHCP \
1137     "dhcp"
1138 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_NEIGH_DISCOVERY \
1139     "neigh_discovery"
1140 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BFD \
1141     "bfd"
1142 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_OSPF \
1143     "ospf"
1144 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_BGP \
1145     "bgp"
1146 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_VRRP \
1147     "vrrp"
1148 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PIM \
1149     "pim"
1150 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_UC_LB \
1151     "uc_loopback"
1152 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LOCAL_DELIVERY \
1153     "local_delivery"
1154 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_EXTERNAL_DELIVERY \
1155     "external_delivery"
1156 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_IPV6 \
1157     "ipv6"
1158 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_EVENT \
1159     "ptp_event"
1160 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_GENERAL \
1161     "ptp_general"
1162 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_SAMPLE \
1163     "acl_sample"
1164 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_ACL_TRAP \
1165     "acl_trap"
1166 #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PARSER_ERROR_DROPS \
1167     "parser_error_drops"
1168 
1169 #define DEVLINK_TRAP_GENERIC(_type, _init_action, _id, _group_id,         \
1170                  _metadata_cap)                   \
1171     {                                     \
1172         .type = DEVLINK_TRAP_TYPE_##_type,                \
1173         .init_action = DEVLINK_TRAP_ACTION_##_init_action,        \
1174         .generic = true,                          \
1175         .id = DEVLINK_TRAP_GENERIC_ID_##_id,                  \
1176         .name = DEVLINK_TRAP_GENERIC_NAME_##_id,              \
1177         .init_group_id = _group_id,                   \
1178         .metadata_cap = _metadata_cap,                    \
1179     }
1180 
1181 #define DEVLINK_TRAP_DRIVER(_type, _init_action, _id, _name, _group_id,       \
1182                 _metadata_cap)                    \
1183     {                                     \
1184         .type = DEVLINK_TRAP_TYPE_##_type,                \
1185         .init_action = DEVLINK_TRAP_ACTION_##_init_action,        \
1186         .generic = false,                         \
1187         .id = _id,                            \
1188         .name = _name,                            \
1189         .init_group_id = _group_id,                   \
1190         .metadata_cap = _metadata_cap,                    \
1191     }
1192 
1193 #define DEVLINK_TRAP_GROUP_GENERIC(_id, _policer_id)                  \
1194     {                                     \
1195         .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id,            \
1196         .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id,            \
1197         .generic = true,                          \
1198         .init_policer_id = _policer_id,                   \
1199     }
1200 
1201 #define DEVLINK_TRAP_POLICER(_id, _rate, _burst, _max_rate, _min_rate,        \
1202                  _max_burst, _min_burst)                  \
1203     {                                     \
1204         .id = _id,                            \
1205         .init_rate = _rate,                       \
1206         .init_burst = _burst,                         \
1207         .max_rate = _max_rate,                        \
1208         .min_rate = _min_rate,                        \
1209         .max_burst = _max_burst,                      \
1210         .min_burst = _min_burst,                      \
1211     }
1212 
1213 enum {
1214     /* device supports reload operations */
1215     DEVLINK_F_RELOAD = 1UL << 0,
1216 };
1217 
1218 struct devlink_ops {
1219     /**
1220      * @supported_flash_update_params:
1221      * mask of parameters supported by the driver's .flash_update
1222      * implemementation.
1223      */
1224     u32 supported_flash_update_params;
1225     unsigned long reload_actions;
1226     unsigned long reload_limits;
1227     int (*reload_down)(struct devlink *devlink, bool netns_change,
1228                enum devlink_reload_action action,
1229                enum devlink_reload_limit limit,
1230                struct netlink_ext_ack *extack);
1231     int (*reload_up)(struct devlink *devlink, enum devlink_reload_action action,
1232              enum devlink_reload_limit limit, u32 *actions_performed,
1233              struct netlink_ext_ack *extack);
1234     int (*port_type_set)(struct devlink_port *devlink_port,
1235                  enum devlink_port_type port_type);
1236     int (*port_split)(struct devlink *devlink, struct devlink_port *port,
1237               unsigned int count, struct netlink_ext_ack *extack);
1238     int (*port_unsplit)(struct devlink *devlink, struct devlink_port *port,
1239                 struct netlink_ext_ack *extack);
1240     int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
1241                u16 pool_index,
1242                struct devlink_sb_pool_info *pool_info);
1243     int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
1244                u16 pool_index, u32 size,
1245                enum devlink_sb_threshold_type threshold_type,
1246                struct netlink_ext_ack *extack);
1247     int (*sb_port_pool_get)(struct devlink_port *devlink_port,
1248                 unsigned int sb_index, u16 pool_index,
1249                 u32 *p_threshold);
1250     int (*sb_port_pool_set)(struct devlink_port *devlink_port,
1251                 unsigned int sb_index, u16 pool_index,
1252                 u32 threshold, struct netlink_ext_ack *extack);
1253     int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
1254                    unsigned int sb_index,
1255                    u16 tc_index,
1256                    enum devlink_sb_pool_type pool_type,
1257                    u16 *p_pool_index, u32 *p_threshold);
1258     int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
1259                    unsigned int sb_index,
1260                    u16 tc_index,
1261                    enum devlink_sb_pool_type pool_type,
1262                    u16 pool_index, u32 threshold,
1263                    struct netlink_ext_ack *extack);
1264     int (*sb_occ_snapshot)(struct devlink *devlink,
1265                    unsigned int sb_index);
1266     int (*sb_occ_max_clear)(struct devlink *devlink,
1267                 unsigned int sb_index);
1268     int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
1269                     unsigned int sb_index, u16 pool_index,
1270                     u32 *p_cur, u32 *p_max);
1271     int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
1272                        unsigned int sb_index,
1273                        u16 tc_index,
1274                        enum devlink_sb_pool_type pool_type,
1275                        u32 *p_cur, u32 *p_max);
1276 
1277     int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
1278     int (*eswitch_mode_set)(struct devlink *devlink, u16 mode,
1279                 struct netlink_ext_ack *extack);
1280     int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
1281     int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode,
1282                        struct netlink_ext_ack *extack);
1283     int (*eswitch_encap_mode_get)(struct devlink *devlink,
1284                       enum devlink_eswitch_encap_mode *p_encap_mode);
1285     int (*eswitch_encap_mode_set)(struct devlink *devlink,
1286                       enum devlink_eswitch_encap_mode encap_mode,
1287                       struct netlink_ext_ack *extack);
1288     int (*info_get)(struct devlink *devlink, struct devlink_info_req *req,
1289             struct netlink_ext_ack *extack);
1290     /**
1291      * @flash_update: Device flash update function
1292      *
1293      * Used to perform a flash update for the device. The set of
1294      * parameters supported by the driver should be set in
1295      * supported_flash_update_params.
1296      */
1297     int (*flash_update)(struct devlink *devlink,
1298                 struct devlink_flash_update_params *params,
1299                 struct netlink_ext_ack *extack);
1300     /**
1301      * @trap_init: Trap initialization function.
1302      *
1303      * Should be used by device drivers to initialize the trap in the
1304      * underlying device. Drivers should also store the provided trap
1305      * context, so that they could efficiently pass it to
1306      * devlink_trap_report() when the trap is triggered.
1307      */
1308     int (*trap_init)(struct devlink *devlink,
1309              const struct devlink_trap *trap, void *trap_ctx);
1310     /**
1311      * @trap_fini: Trap de-initialization function.
1312      *
1313      * Should be used by device drivers to de-initialize the trap in the
1314      * underlying device.
1315      */
1316     void (*trap_fini)(struct devlink *devlink,
1317               const struct devlink_trap *trap, void *trap_ctx);
1318     /**
1319      * @trap_action_set: Trap action set function.
1320      */
1321     int (*trap_action_set)(struct devlink *devlink,
1322                    const struct devlink_trap *trap,
1323                    enum devlink_trap_action action,
1324                    struct netlink_ext_ack *extack);
1325     /**
1326      * @trap_group_init: Trap group initialization function.
1327      *
1328      * Should be used by device drivers to initialize the trap group in the
1329      * underlying device.
1330      */
1331     int (*trap_group_init)(struct devlink *devlink,
1332                    const struct devlink_trap_group *group);
1333     /**
1334      * @trap_group_set: Trap group parameters set function.
1335      *
1336      * Note: @policer can be NULL when a policer is being unbound from
1337      * @group.
1338      */
1339     int (*trap_group_set)(struct devlink *devlink,
1340                   const struct devlink_trap_group *group,
1341                   const struct devlink_trap_policer *policer,
1342                   struct netlink_ext_ack *extack);
1343     /**
1344      * @trap_group_action_set: Trap group action set function.
1345      *
1346      * If this callback is populated, it will take precedence over looping
1347      * over all traps in a group and calling .trap_action_set().
1348      */
1349     int (*trap_group_action_set)(struct devlink *devlink,
1350                      const struct devlink_trap_group *group,
1351                      enum devlink_trap_action action,
1352                      struct netlink_ext_ack *extack);
1353     /**
1354      * @trap_drop_counter_get: Trap drop counter get function.
1355      *
1356      * Should be used by device drivers to report number of packets
1357      * that have been dropped, and cannot be passed to the devlink
1358      * subsystem by the underlying device.
1359      */
1360     int (*trap_drop_counter_get)(struct devlink *devlink,
1361                      const struct devlink_trap *trap,
1362                      u64 *p_drops);
1363     /**
1364      * @trap_policer_init: Trap policer initialization function.
1365      *
1366      * Should be used by device drivers to initialize the trap policer in
1367      * the underlying device.
1368      */
1369     int (*trap_policer_init)(struct devlink *devlink,
1370                  const struct devlink_trap_policer *policer);
1371     /**
1372      * @trap_policer_fini: Trap policer de-initialization function.
1373      *
1374      * Should be used by device drivers to de-initialize the trap policer
1375      * in the underlying device.
1376      */
1377     void (*trap_policer_fini)(struct devlink *devlink,
1378                   const struct devlink_trap_policer *policer);
1379     /**
1380      * @trap_policer_set: Trap policer parameters set function.
1381      */
1382     int (*trap_policer_set)(struct devlink *devlink,
1383                 const struct devlink_trap_policer *policer,
1384                 u64 rate, u64 burst,
1385                 struct netlink_ext_ack *extack);
1386     /**
1387      * @trap_policer_counter_get: Trap policer counter get function.
1388      *
1389      * Should be used by device drivers to report number of packets dropped
1390      * by the policer.
1391      */
1392     int (*trap_policer_counter_get)(struct devlink *devlink,
1393                     const struct devlink_trap_policer *policer,
1394                     u64 *p_drops);
1395     /**
1396      * @port_function_hw_addr_get: Port function's hardware address get function.
1397      *
1398      * Should be used by device drivers to report the hardware address of a function managed
1399      * by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
1400      * function handling for a particular port.
1401      *
1402      * Note: @extack can be NULL when port notifier queries the port function.
1403      */
1404     int (*port_function_hw_addr_get)(struct devlink_port *port, u8 *hw_addr,
1405                      int *hw_addr_len,
1406                      struct netlink_ext_ack *extack);
1407     /**
1408      * @port_function_hw_addr_set: Port function's hardware address set function.
1409      *
1410      * Should be used by device drivers to set the hardware address of a function managed
1411      * by the devlink port. Driver should return -EOPNOTSUPP if it doesn't support port
1412      * function handling for a particular port.
1413      */
1414     int (*port_function_hw_addr_set)(struct devlink_port *port,
1415                      const u8 *hw_addr, int hw_addr_len,
1416                      struct netlink_ext_ack *extack);
1417     /**
1418      * port_new() - Add a new port function of a specified flavor
1419      * @devlink: Devlink instance
1420      * @attrs: attributes of the new port
1421      * @extack: extack for reporting error messages
1422      * @new_port_index: index of the new port
1423      *
1424      * Devlink core will call this device driver function upon user request
1425      * to create a new port function of a specified flavor and optional
1426      * attributes
1427      *
1428      * Notes:
1429      *  - Called without devlink instance lock being held. Drivers must
1430      *    implement own means of synchronization
1431      *  - On success, drivers must register a port with devlink core
1432      *
1433      * Return: 0 on success, negative value otherwise.
1434      */
1435     int (*port_new)(struct devlink *devlink,
1436             const struct devlink_port_new_attrs *attrs,
1437             struct netlink_ext_ack *extack,
1438             unsigned int *new_port_index);
1439     /**
1440      * port_del() - Delete a port function
1441      * @devlink: Devlink instance
1442      * @port_index: port function index to delete
1443      * @extack: extack for reporting error messages
1444      *
1445      * Devlink core will call this device driver function upon user request
1446      * to delete a previously created port function
1447      *
1448      * Notes:
1449      *  - Called without devlink instance lock being held. Drivers must
1450      *    implement own means of synchronization
1451      *  - On success, drivers must unregister the corresponding devlink
1452      *    port
1453      *
1454      * Return: 0 on success, negative value otherwise.
1455      */
1456     int (*port_del)(struct devlink *devlink, unsigned int port_index,
1457             struct netlink_ext_ack *extack);
1458     /**
1459      * port_fn_state_get() - Get the state of a port function
1460      * @devlink: Devlink instance
1461      * @port: The devlink port
1462      * @state: Admin configured state
1463      * @opstate: Current operational state
1464      * @extack: extack for reporting error messages
1465      *
1466      * Reports the admin and operational state of a devlink port function
1467      *
1468      * Return: 0 on success, negative value otherwise.
1469      */
1470     int (*port_fn_state_get)(struct devlink_port *port,
1471                  enum devlink_port_fn_state *state,
1472                  enum devlink_port_fn_opstate *opstate,
1473                  struct netlink_ext_ack *extack);
1474     /**
1475      * port_fn_state_set() - Set the admin state of a port function
1476      * @devlink: Devlink instance
1477      * @port: The devlink port
1478      * @state: Admin state
1479      * @extack: extack for reporting error messages
1480      *
1481      * Set the admin state of a devlink port function
1482      *
1483      * Return: 0 on success, negative value otherwise.
1484      */
1485     int (*port_fn_state_set)(struct devlink_port *port,
1486                  enum devlink_port_fn_state state,
1487                  struct netlink_ext_ack *extack);
1488 
1489     /**
1490      * Rate control callbacks.
1491      */
1492     int (*rate_leaf_tx_share_set)(struct devlink_rate *devlink_rate, void *priv,
1493                       u64 tx_share, struct netlink_ext_ack *extack);
1494     int (*rate_leaf_tx_max_set)(struct devlink_rate *devlink_rate, void *priv,
1495                     u64 tx_max, struct netlink_ext_ack *extack);
1496     int (*rate_node_tx_share_set)(struct devlink_rate *devlink_rate, void *priv,
1497                       u64 tx_share, struct netlink_ext_ack *extack);
1498     int (*rate_node_tx_max_set)(struct devlink_rate *devlink_rate, void *priv,
1499                     u64 tx_max, struct netlink_ext_ack *extack);
1500     int (*rate_node_new)(struct devlink_rate *rate_node, void **priv,
1501                  struct netlink_ext_ack *extack);
1502     int (*rate_node_del)(struct devlink_rate *rate_node, void *priv,
1503                  struct netlink_ext_ack *extack);
1504     int (*rate_leaf_parent_set)(struct devlink_rate *child,
1505                     struct devlink_rate *parent,
1506                     void *priv_child, void *priv_parent,
1507                     struct netlink_ext_ack *extack);
1508     int (*rate_node_parent_set)(struct devlink_rate *child,
1509                     struct devlink_rate *parent,
1510                     void *priv_child, void *priv_parent,
1511                     struct netlink_ext_ack *extack);
1512     /**
1513      * selftests_check() - queries if selftest is supported
1514      * @devlink: devlink instance
1515      * @id: test index
1516      * @extack: extack for reporting error messages
1517      *
1518      * Return: true if test is supported by the driver
1519      */
1520     bool (*selftest_check)(struct devlink *devlink, unsigned int id,
1521                    struct netlink_ext_ack *extack);
1522     /**
1523      * selftest_run() - Runs a selftest
1524      * @devlink: devlink instance
1525      * @id: test index
1526      * @extack: extack for reporting error messages
1527      *
1528      * Return: status of the test
1529      */
1530     enum devlink_selftest_status
1531     (*selftest_run)(struct devlink *devlink, unsigned int id,
1532             struct netlink_ext_ack *extack);
1533 };
1534 
1535 void *devlink_priv(struct devlink *devlink);
1536 struct devlink *priv_to_devlink(void *priv);
1537 struct device *devlink_to_dev(const struct devlink *devlink);
1538 
1539 /* Devlink instance explicit locking */
1540 void devl_lock(struct devlink *devlink);
1541 int devl_trylock(struct devlink *devlink);
1542 void devl_unlock(struct devlink *devlink);
1543 void devl_assert_locked(struct devlink *devlink);
1544 bool devl_lock_is_held(struct devlink *devlink);
1545 
1546 struct ib_device;
1547 
1548 struct net *devlink_net(const struct devlink *devlink);
1549 /* This call is intended for software devices that can create
1550  * devlink instances in other namespaces than init_net.
1551  *
1552  * Drivers that operate on real HW must use devlink_alloc() instead.
1553  */
1554 struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
1555                  size_t priv_size, struct net *net,
1556                  struct device *dev);
1557 static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
1558                         size_t priv_size,
1559                         struct device *dev)
1560 {
1561     return devlink_alloc_ns(ops, priv_size, &init_net, dev);
1562 }
1563 void devlink_set_features(struct devlink *devlink, u64 features);
1564 void devlink_register(struct devlink *devlink);
1565 void devlink_unregister(struct devlink *devlink);
1566 void devlink_free(struct devlink *devlink);
1567 int devl_port_register(struct devlink *devlink,
1568                struct devlink_port *devlink_port,
1569                unsigned int port_index);
1570 int devlink_port_register(struct devlink *devlink,
1571               struct devlink_port *devlink_port,
1572               unsigned int port_index);
1573 void devl_port_unregister(struct devlink_port *devlink_port);
1574 void devlink_port_unregister(struct devlink_port *devlink_port);
1575 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
1576                    struct net_device *netdev);
1577 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
1578                   struct ib_device *ibdev);
1579 void devlink_port_type_clear(struct devlink_port *devlink_port);
1580 void devlink_port_attrs_set(struct devlink_port *devlink_port,
1581                 struct devlink_port_attrs *devlink_port_attrs);
1582 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
1583                    u16 pf, bool external);
1584 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
1585                    u16 pf, u16 vf, bool external);
1586 void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port,
1587                    u32 controller, u16 pf, u32 sf,
1588                    bool external);
1589 int devl_rate_leaf_create(struct devlink_port *port, void *priv);
1590 void devl_rate_leaf_destroy(struct devlink_port *devlink_port);
1591 void devl_rate_nodes_destroy(struct devlink *devlink);
1592 void devlink_port_linecard_set(struct devlink_port *devlink_port,
1593                    struct devlink_linecard *linecard);
1594 struct devlink_linecard *
1595 devlink_linecard_create(struct devlink *devlink, unsigned int linecard_index,
1596             const struct devlink_linecard_ops *ops, void *priv);
1597 void devlink_linecard_destroy(struct devlink_linecard *linecard);
1598 void devlink_linecard_provision_set(struct devlink_linecard *linecard,
1599                     const char *type);
1600 void devlink_linecard_provision_clear(struct devlink_linecard *linecard);
1601 void devlink_linecard_provision_fail(struct devlink_linecard *linecard);
1602 void devlink_linecard_activate(struct devlink_linecard *linecard);
1603 void devlink_linecard_deactivate(struct devlink_linecard *linecard);
1604 void devlink_linecard_nested_dl_set(struct devlink_linecard *linecard,
1605                     struct devlink *nested_devlink);
1606 int devl_sb_register(struct devlink *devlink, unsigned int sb_index,
1607              u32 size, u16 ingress_pools_count,
1608              u16 egress_pools_count, u16 ingress_tc_count,
1609              u16 egress_tc_count);
1610 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
1611             u32 size, u16 ingress_pools_count,
1612             u16 egress_pools_count, u16 ingress_tc_count,
1613             u16 egress_tc_count);
1614 void devl_sb_unregister(struct devlink *devlink, unsigned int sb_index);
1615 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
1616 int devl_dpipe_table_register(struct devlink *devlink,
1617                   const char *table_name,
1618                   struct devlink_dpipe_table_ops *table_ops,
1619                   void *priv, bool counter_control_extern);
1620 void devl_dpipe_table_unregister(struct devlink *devlink,
1621                  const char *table_name);
1622 void devl_dpipe_headers_register(struct devlink *devlink,
1623                  struct devlink_dpipe_headers *dpipe_headers);
1624 void devl_dpipe_headers_unregister(struct devlink *devlink);
1625 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
1626                      const char *table_name);
1627 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
1628 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
1629                    struct devlink_dpipe_entry *entry);
1630 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
1631 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry);
1632 int devlink_dpipe_action_put(struct sk_buff *skb,
1633                  struct devlink_dpipe_action *action);
1634 int devlink_dpipe_match_put(struct sk_buff *skb,
1635                 struct devlink_dpipe_match *match);
1636 extern struct devlink_dpipe_header devlink_dpipe_header_ethernet;
1637 extern struct devlink_dpipe_header devlink_dpipe_header_ipv4;
1638 extern struct devlink_dpipe_header devlink_dpipe_header_ipv6;
1639 
1640 int devl_resource_register(struct devlink *devlink,
1641                const char *resource_name,
1642                u64 resource_size,
1643                u64 resource_id,
1644                u64 parent_resource_id,
1645                const struct devlink_resource_size_params *size_params);
1646 int devlink_resource_register(struct devlink *devlink,
1647                   const char *resource_name,
1648                   u64 resource_size,
1649                   u64 resource_id,
1650                   u64 parent_resource_id,
1651                   const struct devlink_resource_size_params *size_params);
1652 void devl_resources_unregister(struct devlink *devlink);
1653 void devlink_resources_unregister(struct devlink *devlink);
1654 int devl_resource_size_get(struct devlink *devlink,
1655                u64 resource_id,
1656                u64 *p_resource_size);
1657 int devl_dpipe_table_resource_set(struct devlink *devlink,
1658                   const char *table_name, u64 resource_id,
1659                   u64 resource_units);
1660 int devlink_dpipe_table_resource_set(struct devlink *devlink,
1661                      const char *table_name, u64 resource_id,
1662                      u64 resource_units);
1663 void devl_resource_occ_get_register(struct devlink *devlink,
1664                     u64 resource_id,
1665                     devlink_resource_occ_get_t *occ_get,
1666                     void *occ_get_priv);
1667 void devlink_resource_occ_get_register(struct devlink *devlink,
1668                        u64 resource_id,
1669                        devlink_resource_occ_get_t *occ_get,
1670                        void *occ_get_priv);
1671 void devl_resource_occ_get_unregister(struct devlink *devlink,
1672                       u64 resource_id);
1673 
1674 void devlink_resource_occ_get_unregister(struct devlink *devlink,
1675                      u64 resource_id);
1676 int devlink_params_register(struct devlink *devlink,
1677                 const struct devlink_param *params,
1678                 size_t params_count);
1679 void devlink_params_unregister(struct devlink *devlink,
1680                    const struct devlink_param *params,
1681                    size_t params_count);
1682 int devlink_param_register(struct devlink *devlink,
1683                const struct devlink_param *param);
1684 void devlink_param_unregister(struct devlink *devlink,
1685                   const struct devlink_param *param);
1686 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
1687                        union devlink_param_value *init_val);
1688 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
1689                        union devlink_param_value init_val);
1690 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
1691 struct devlink_region *devl_region_create(struct devlink *devlink,
1692                       const struct devlink_region_ops *ops,
1693                       u32 region_max_snapshots,
1694                       u64 region_size);
1695 struct devlink_region *
1696 devlink_region_create(struct devlink *devlink,
1697               const struct devlink_region_ops *ops,
1698               u32 region_max_snapshots, u64 region_size);
1699 struct devlink_region *
1700 devlink_port_region_create(struct devlink_port *port,
1701                const struct devlink_port_region_ops *ops,
1702                u32 region_max_snapshots, u64 region_size);
1703 void devl_region_destroy(struct devlink_region *region);
1704 void devlink_region_destroy(struct devlink_region *region);
1705 void devlink_port_region_destroy(struct devlink_region *region);
1706 
1707 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id);
1708 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id);
1709 int devlink_region_snapshot_create(struct devlink_region *region,
1710                    u8 *data, u32 snapshot_id);
1711 int devlink_info_serial_number_put(struct devlink_info_req *req,
1712                    const char *sn);
1713 int devlink_info_driver_name_put(struct devlink_info_req *req,
1714                  const char *name);
1715 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
1716                      const char *bsn);
1717 int devlink_info_version_fixed_put(struct devlink_info_req *req,
1718                    const char *version_name,
1719                    const char *version_value);
1720 int devlink_info_version_stored_put(struct devlink_info_req *req,
1721                     const char *version_name,
1722                     const char *version_value);
1723 int devlink_info_version_running_put(struct devlink_info_req *req,
1724                      const char *version_name,
1725                      const char *version_value);
1726 
1727 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg);
1728 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg);
1729 
1730 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name);
1731 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg);
1732 
1733 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
1734                      const char *name);
1735 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg);
1736 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
1737                     const char *name);
1738 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg);
1739 
1740 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value);
1741 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value);
1742 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
1743                 u16 value_len);
1744 
1745 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
1746                    bool value);
1747 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
1748                  u8 value);
1749 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
1750                   u32 value);
1751 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
1752                   u64 value);
1753 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
1754                  const char *value);
1755 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
1756                  const void *value, u32 value_len);
1757 
1758 struct devlink_health_reporter *
1759 devlink_health_reporter_create(struct devlink *devlink,
1760                    const struct devlink_health_reporter_ops *ops,
1761                    u64 graceful_period, void *priv);
1762 
1763 struct devlink_health_reporter *
1764 devlink_port_health_reporter_create(struct devlink_port *port,
1765                     const struct devlink_health_reporter_ops *ops,
1766                     u64 graceful_period, void *priv);
1767 
1768 void
1769 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter);
1770 
1771 void
1772 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter);
1773 
1774 void *
1775 devlink_health_reporter_priv(struct devlink_health_reporter *reporter);
1776 int devlink_health_report(struct devlink_health_reporter *reporter,
1777               const char *msg, void *priv_ctx);
1778 void
1779 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
1780                      enum devlink_health_reporter_state state);
1781 void
1782 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter);
1783 
1784 bool devlink_is_reload_failed(const struct devlink *devlink);
1785 void devlink_remote_reload_actions_performed(struct devlink *devlink,
1786                          enum devlink_reload_limit limit,
1787                          u32 actions_performed);
1788 
1789 void devlink_flash_update_status_notify(struct devlink *devlink,
1790                     const char *status_msg,
1791                     const char *component,
1792                     unsigned long done,
1793                     unsigned long total);
1794 void devlink_flash_update_timeout_notify(struct devlink *devlink,
1795                      const char *status_msg,
1796                      const char *component,
1797                      unsigned long timeout);
1798 
1799 int devl_traps_register(struct devlink *devlink,
1800             const struct devlink_trap *traps,
1801             size_t traps_count, void *priv);
1802 int devlink_traps_register(struct devlink *devlink,
1803                const struct devlink_trap *traps,
1804                size_t traps_count, void *priv);
1805 void devl_traps_unregister(struct devlink *devlink,
1806                const struct devlink_trap *traps,
1807                size_t traps_count);
1808 void devlink_traps_unregister(struct devlink *devlink,
1809                   const struct devlink_trap *traps,
1810                   size_t traps_count);
1811 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
1812              void *trap_ctx, struct devlink_port *in_devlink_port,
1813              const struct flow_action_cookie *fa_cookie);
1814 void *devlink_trap_ctx_priv(void *trap_ctx);
1815 int devl_trap_groups_register(struct devlink *devlink,
1816                   const struct devlink_trap_group *groups,
1817                   size_t groups_count);
1818 int devlink_trap_groups_register(struct devlink *devlink,
1819                  const struct devlink_trap_group *groups,
1820                  size_t groups_count);
1821 void devl_trap_groups_unregister(struct devlink *devlink,
1822                  const struct devlink_trap_group *groups,
1823                  size_t groups_count);
1824 void devlink_trap_groups_unregister(struct devlink *devlink,
1825                     const struct devlink_trap_group *groups,
1826                     size_t groups_count);
1827 int
1828 devl_trap_policers_register(struct devlink *devlink,
1829                 const struct devlink_trap_policer *policers,
1830                 size_t policers_count);
1831 void
1832 devl_trap_policers_unregister(struct devlink *devlink,
1833                   const struct devlink_trap_policer *policers,
1834                   size_t policers_count);
1835 
1836 #if IS_ENABLED(CONFIG_NET_DEVLINK)
1837 
1838 struct devlink *__must_check devlink_try_get(struct devlink *devlink);
1839 void devlink_put(struct devlink *devlink);
1840 
1841 void devlink_compat_running_version(struct devlink *devlink,
1842                     char *buf, size_t len);
1843 int devlink_compat_flash_update(struct devlink *devlink, const char *file_name);
1844 int devlink_compat_phys_port_name_get(struct net_device *dev,
1845                       char *name, size_t len);
1846 int devlink_compat_switch_id_get(struct net_device *dev,
1847                  struct netdev_phys_item_id *ppid);
1848 
1849 #else
1850 
1851 static inline struct devlink *devlink_try_get(struct devlink *devlink)
1852 {
1853     return NULL;
1854 }
1855 
1856 static inline void devlink_put(struct devlink *devlink)
1857 {
1858 }
1859 
1860 static inline void
1861 devlink_compat_running_version(struct devlink *devlink, char *buf, size_t len)
1862 {
1863 }
1864 
1865 static inline int
1866 devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
1867 {
1868     return -EOPNOTSUPP;
1869 }
1870 
1871 static inline int
1872 devlink_compat_phys_port_name_get(struct net_device *dev,
1873                   char *name, size_t len)
1874 {
1875     return -EOPNOTSUPP;
1876 }
1877 
1878 static inline int
1879 devlink_compat_switch_id_get(struct net_device *dev,
1880                  struct netdev_phys_item_id *ppid)
1881 {
1882     return -EOPNOTSUPP;
1883 }
1884 
1885 #endif
1886 
1887 #endif /* _NET_DEVLINK_H_ */
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