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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.h36
1 files changed, 32 insertions, 4 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index 421dff3ea143..809691291e73 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -19,6 +19,7 @@
#include <linux/rcupdate.h>
#include <linux/blkdev.h>
#include <linux/radix-tree.h>
+#include <linux/t10-pi.h>
#define NVMET_ASYNC_EVENTS 4
#define NVMET_ERROR_LOG_SLOTS 128
@@ -77,6 +78,8 @@ struct nvmet_ns {
int use_p2pmem;
struct pci_dev *p2p_dev;
+ int pi_type;
+ int metadata_size;
};
static inline struct nvmet_ns *to_nvmet_ns(struct config_item *item)
@@ -142,6 +145,7 @@ struct nvmet_port {
bool enabled;
int inline_data_size;
const struct nvmet_fabrics_ops *tr_ops;
+ bool pi_enable;
};
static inline struct nvmet_port *to_nvmet_port(struct config_item *item)
@@ -201,6 +205,7 @@ struct nvmet_ctrl {
spinlock_t error_lock;
u64 err_counter;
struct nvme_error_slot slots[NVMET_ERROR_LOG_SLOTS];
+ bool pi_support;
};
struct nvmet_subsys_model {
@@ -230,6 +235,7 @@ struct nvmet_subsys {
u64 ver;
u64 serial;
char *subsysnqn;
+ bool pi_support;
struct config_group group;
@@ -281,6 +287,7 @@ struct nvmet_fabrics_ops {
unsigned int type;
unsigned int msdbd;
bool has_keyed_sgls : 1;
+ bool metadata_support : 1;
void (*queue_response)(struct nvmet_req *req);
int (*add_port)(struct nvmet_port *port);
void (*remove_port)(struct nvmet_port *port);
@@ -302,6 +309,7 @@ struct nvmet_req {
struct nvmet_cq *cq;
struct nvmet_ns *ns;
struct scatterlist *sg;
+ struct scatterlist *metadata_sg;
struct bio_vec inline_bvec[NVMET_MAX_INLINE_BIOVEC];
union {
struct {
@@ -315,8 +323,10 @@ struct nvmet_req {
} f;
};
int sg_cnt;
+ int metadata_sg_cnt;
/* data length as parsed from the SGL descriptor: */
size_t transfer_len;
+ size_t metadata_len;
struct nvmet_port *port;
@@ -384,11 +394,11 @@ u16 nvmet_parse_fabrics_cmd(struct nvmet_req *req);
bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
struct nvmet_sq *sq, const struct nvmet_fabrics_ops *ops);
void nvmet_req_uninit(struct nvmet_req *req);
-bool nvmet_check_data_len(struct nvmet_req *req, size_t data_len);
+bool nvmet_check_transfer_len(struct nvmet_req *req, size_t len);
bool nvmet_check_data_len_lte(struct nvmet_req *req, size_t data_len);
void nvmet_req_complete(struct nvmet_req *req, u16 status);
-int nvmet_req_alloc_sgl(struct nvmet_req *req);
-void nvmet_req_free_sgl(struct nvmet_req *req);
+int nvmet_req_alloc_sgls(struct nvmet_req *req);
+void nvmet_req_free_sgls(struct nvmet_req *req);
void nvmet_execute_keep_alive(struct nvmet_req *req);
@@ -498,13 +508,24 @@ 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);
+void nvmet_bdev_ns_revalidate(struct nvmet_ns *ns);
+int nvmet_file_ns_revalidate(struct nvmet_ns *ns);
+void nvmet_ns_revalidate(struct nvmet_ns *ns);
-static inline u32 nvmet_rw_len(struct nvmet_req *req)
+static inline u32 nvmet_rw_data_len(struct nvmet_req *req)
{
return ((u32)le16_to_cpu(req->cmd->rw.length) + 1) <<
req->ns->blksize_shift;
}
+static inline u32 nvmet_rw_metadata_len(struct nvmet_req *req)
+{
+ if (!IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY))
+ return 0;
+ return ((u32)le16_to_cpu(req->cmd->rw.length) + 1) *
+ req->ns->metadata_size;
+}
+
static inline u32 nvmet_dsm_len(struct nvmet_req *req)
{
return (le32_to_cpu(req->cmd->dsm.nr) + 1) *
@@ -519,4 +540,11 @@ static inline __le16 to0based(u32 a)
return cpu_to_le16(max(1U, min(1U << 16, a)) - 1);
}
+static inline bool nvmet_ns_has_pi(struct nvmet_ns *ns)
+{
+ if (!IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY))
+ return false;
+ return ns->pi_type && ns->metadata_size == sizeof(struct t10_pi_tuple);
+}
+
#endif /* _NVMET_H */