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path: root/drivers/nvme/target/nvmet.h
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Diffstat (limited to 'drivers/nvme/target/nvmet.h')
-rw-r--r--drivers/nvme/target/nvmet.h62
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)
{