diff options
Diffstat (limited to 'drivers/nvme/target/nvmet.h')
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 62 |
1 files changed, 59 insertions, 3 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 480dfe10fad9..ec9af4ee03b6 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -30,12 +30,11 @@ #define NVMET_ASYNC_EVENTS 4 #define NVMET_ERROR_LOG_SLOTS 128 - /* * Supported optional AENs: */ #define NVMET_AEN_CFG_OPTIONAL \ - NVME_AEN_CFG_NS_ATTR + (NVME_AEN_CFG_NS_ATTR | NVME_AEN_CFG_ANA_CHANGE) /* * Plus mandatory SMART AENs (we'll never send them, but allow enabling them): @@ -59,12 +58,15 @@ struct nvmet_ns { struct percpu_ref ref; struct block_device *bdev; struct file *file; + bool readonly; u32 nsid; u32 blksize_shift; loff_t size; u8 nguid[16]; uuid_t uuid; + u32 anagrpid; + bool buffered_io; bool enabled; struct nvmet_subsys *subsys; const char *device_path; @@ -97,6 +99,18 @@ struct nvmet_sq { struct completion confirm_done; }; +struct nvmet_ana_group { + struct config_group group; + struct nvmet_port *port; + u32 grpid; +}; + +static inline struct nvmet_ana_group *to_ana_group(struct config_item *item) +{ + return container_of(to_config_group(item), struct nvmet_ana_group, + group); +} + /** * struct nvmet_port - Common structure to keep port * information for the target. @@ -114,8 +128,12 @@ struct nvmet_port { struct list_head subsystems; struct config_group referrals_group; struct list_head referrals; + struct config_group ana_groups_group; + struct nvmet_ana_group ana_default_group; + enum nvme_ana_state *ana_state; void *priv; bool enabled; + int inline_data_size; }; static inline struct nvmet_port *to_nvmet_port(struct config_item *item) @@ -124,6 +142,13 @@ static inline struct nvmet_port *to_nvmet_port(struct config_item *item) group); } +static inline struct nvmet_port *ana_groups_to_port( + struct config_item *item) +{ + return container_of(to_config_group(item), struct nvmet_port, + ana_groups_group); +} + struct nvmet_ctrl { struct nvmet_subsys *subsys; struct nvmet_cq **cqs; @@ -138,6 +163,8 @@ struct nvmet_ctrl { u16 cntlid; u32 kato; + struct nvmet_port *port; + u32 aen_enabled; unsigned long aen_masked; struct nvmet_req *async_event_cmds[NVMET_ASYNC_EVENTS]; @@ -166,6 +193,7 @@ struct nvmet_subsys { struct kref ref; struct list_head namespaces; + unsigned int nr_namespaces; unsigned int max_nsid; struct list_head ctrls; @@ -225,7 +253,6 @@ struct nvmet_req; struct nvmet_fabrics_ops { struct module *owner; unsigned int type; - unsigned int sqe_inline_size; unsigned int msdbd; bool has_keyed_sgls : 1; void (*queue_response)(struct nvmet_req *req); @@ -269,6 +296,8 @@ struct nvmet_req { const struct nvmet_fabrics_ops *ops; }; +extern struct workqueue_struct *buffered_io_wq; + static inline void nvmet_set_status(struct nvmet_req *req, u16 status) { req->rsp->status = cpu_to_le16(status << 1); @@ -337,6 +366,10 @@ void nvmet_ns_disable(struct nvmet_ns *ns); struct nvmet_ns *nvmet_ns_alloc(struct nvmet_subsys *subsys, u32 nsid); void nvmet_ns_free(struct nvmet_ns *ns); +void nvmet_send_ana_event(struct nvmet_subsys *subsys, + struct nvmet_port *port); +void nvmet_port_send_ana_event(struct nvmet_port *port); + int nvmet_register_transport(const struct nvmet_fabrics_ops *ops); void nvmet_unregister_transport(const struct nvmet_fabrics_ops *ops); @@ -357,6 +390,22 @@ u32 nvmet_get_log_page_len(struct nvme_command *cmd); #define NVMET_QUEUE_SIZE 1024 #define NVMET_NR_QUEUES 128 #define NVMET_MAX_CMD NVMET_QUEUE_SIZE + +/* + * Nice round number that makes a list of nsids fit into a page. + * Should become tunable at some point in the future. + */ +#define NVMET_MAX_NAMESPACES 1024 + +/* + * 0 is not a valid ANA group ID, so we start numbering at 1. + * + * ANA Group 1 exists without manual intervention, has namespaces assigned to it + * by default, and is available in an optimized state through all ports. + */ +#define NVMET_MAX_ANAGRPS 128 +#define NVMET_DEFAULT_ANA_GRPID 1 + #define NVMET_KAS 10 #define NVMET_DISC_KATO 120 @@ -370,6 +419,10 @@ extern struct nvmet_subsys *nvmet_disc_subsys; extern u64 nvmet_genctr; extern struct rw_semaphore nvmet_config_sem; +extern u32 nvmet_ana_group_enabled[NVMET_MAX_ANAGRPS + 1]; +extern u64 nvmet_ana_chgcnt; +extern struct rw_semaphore nvmet_ana_sem; + bool nvmet_host_allowed(struct nvmet_req *req, struct nvmet_subsys *subsys, const char *hostnqn); @@ -377,6 +430,9 @@ int nvmet_bdev_ns_enable(struct nvmet_ns *ns); int nvmet_file_ns_enable(struct nvmet_ns *ns); void nvmet_bdev_ns_disable(struct nvmet_ns *ns); void nvmet_file_ns_disable(struct nvmet_ns *ns); +u16 nvmet_bdev_flush(struct nvmet_req *req); +u16 nvmet_file_flush(struct nvmet_req *req); +void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid); static inline u32 nvmet_rw_len(struct nvmet_req *req) { |