diff options
Diffstat (limited to 'include/net/devlink.h')
| -rw-r--r-- | include/net/devlink.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/include/net/devlink.h b/include/net/devlink.h index 451268f64880..03b32e33e93e 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -14,6 +14,7 @@ #include <linux/netdevice.h> #include <linux/spinlock.h> #include <linux/workqueue.h> +#include <linux/refcount.h> #include <net/net_namespace.h> #include <uapi/linux/devlink.h> @@ -31,6 +32,8 @@ struct devlink { struct list_head reporter_list; struct mutex reporters_lock; /* protects reporter_list */ struct devlink_dpipe_headers *dpipe_headers; + struct list_head trap_list; + struct list_head trap_group_list; const struct devlink_ops *ops; struct device *dev; possible_net_t _net; @@ -497,6 +500,89 @@ struct devlink_health_reporter_ops { struct devlink_fmsg *fmsg); }; +/** + * struct devlink_trap_group - Immutable packet trap group attributes. + * @name: Trap group name. + * @id: Trap group identifier. + * @generic: Whether the trap group is generic or not. + * + * Describes immutable attributes of packet trap groups that drivers register + * with devlink. + */ +struct devlink_trap_group { + const char *name; + u16 id; + bool generic; +}; + +#define DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT BIT(0) + +/** + * struct devlink_trap - Immutable packet trap attributes. + * @type: Trap type. + * @init_action: Initial trap action. + * @generic: Whether the trap is generic or not. + * @id: Trap identifier. + * @name: Trap name. + * @group: Immutable packet trap group attributes. + * @metadata_cap: Metadata types that can be provided by the trap. + * + * Describes immutable attributes of packet traps that drivers register with + * devlink. + */ +struct devlink_trap { + enum devlink_trap_type type; + enum devlink_trap_action init_action; + bool generic; + u16 id; + const char *name; + struct devlink_trap_group group; + u32 metadata_cap; +}; + +enum devlink_trap_generic_id { + /* Add new generic trap IDs above */ + __DEVLINK_TRAP_GENERIC_ID_MAX, + DEVLINK_TRAP_GENERIC_ID_MAX = __DEVLINK_TRAP_GENERIC_ID_MAX - 1, +}; + +enum devlink_trap_group_generic_id { + /* Add new generic trap group IDs above */ + __DEVLINK_TRAP_GROUP_GENERIC_ID_MAX, + DEVLINK_TRAP_GROUP_GENERIC_ID_MAX = + __DEVLINK_TRAP_GROUP_GENERIC_ID_MAX - 1, +}; + +#define DEVLINK_TRAP_GENERIC(_type, _init_action, _id, _group, _metadata_cap) \ + { \ + .type = DEVLINK_TRAP_TYPE_##_type, \ + .init_action = DEVLINK_TRAP_ACTION_##_init_action, \ + .generic = true, \ + .id = DEVLINK_TRAP_GENERIC_ID_##_id, \ + .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \ + .group = _group, \ + .metadata_cap = _metadata_cap, \ + } + +#define DEVLINK_TRAP_DRIVER(_type, _init_action, _id, _name, _group, \ + _metadata_cap) \ + { \ + .type = DEVLINK_TRAP_TYPE_##_type, \ + .init_action = DEVLINK_TRAP_ACTION_##_init_action, \ + .generic = false, \ + .id = _id, \ + .name = _name, \ + .group = _group, \ + .metadata_cap = _metadata_cap, \ + } + +#define DEVLINK_TRAP_GROUP_GENERIC(_id) \ + { \ + .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \ + .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \ + .generic = true, \ + } + struct devlink_ops { int (*reload)(struct devlink *devlink, struct netlink_ext_ack *extack); int (*port_type_set)(struct devlink_port *devlink_port, @@ -558,6 +644,38 @@ struct devlink_ops { int (*flash_update)(struct devlink *devlink, const char *file_name, const char *component, struct netlink_ext_ack *extack); + /** + * @trap_init: Trap initialization function. + * + * Should be used by device drivers to initialize the trap in the + * underlying device. Drivers should also store the provided trap + * context, so that they could efficiently pass it to + * devlink_trap_report() when the trap is triggered. + */ + int (*trap_init)(struct devlink *devlink, + const struct devlink_trap *trap, void *trap_ctx); + /** + * @trap_fini: Trap de-initialization function. + * + * Should be used by device drivers to de-initialize the trap in the + * underlying device. + */ + void (*trap_fini)(struct devlink *devlink, + const struct devlink_trap *trap, void *trap_ctx); + /** + * @trap_action_set: Trap action set function. + */ + int (*trap_action_set)(struct devlink *devlink, + const struct devlink_trap *trap, + enum devlink_trap_action action); + /** + * @trap_group_init: Trap group initialization function. + * + * Should be used by device drivers to initialize the trap group in the + * underlying device. + */ + int (*trap_group_init)(struct devlink *devlink, + const struct devlink_trap_group *group); }; static inline void *devlink_priv(struct devlink *devlink) @@ -774,6 +892,17 @@ void devlink_flash_update_status_notify(struct devlink *devlink, unsigned long done, unsigned long total); +int devlink_traps_register(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count, void *priv); +void devlink_traps_unregister(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count); +void devlink_trap_report(struct devlink *devlink, + struct sk_buff *skb, void *trap_ctx, + struct devlink_port *in_devlink_port); +void *devlink_trap_ctx_priv(void *trap_ctx); + #if IS_ENABLED(CONFIG_NET_DEVLINK) void devlink_compat_running_version(struct net_device *dev, |