drivers/block/rnbd/rnbd-srv.h

Source file repositories/reference/linux-study-clean/drivers/block/rnbd/rnbd-srv.h

File Facts

System
Linux kernel
Corpus path
drivers/block/rnbd/rnbd-srv.h
Extension
.h
Size
2201 bytes
Lines
76
Domain
Driver Families
Bucket
drivers/block
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct rnbd_srv_session {
	/* Entry inside global sess_list */
	struct list_head        list;
	struct rtrs_srv_sess	*rtrs;
	char			sessname[NAME_MAX];
	int			queue_depth;

	struct xarray		index_idr;
	struct mutex		lock;
	u8			ver;
};

struct rnbd_srv_dev {
	/* Entry inside global dev_list */
	struct list_head                list;
	struct kobject                  dev_kobj;
	struct kobject                  *dev_sessions_kobj;
	struct kref                     kref;
	char				name[NAME_MAX];
	/* List of rnbd_srv_sess_dev structs */
	struct list_head		sess_dev_list;
	struct mutex			lock;
	int				open_write_cnt;
};

/* Structure which binds N devices and N sessions */
struct rnbd_srv_sess_dev {
	/* Entry inside rnbd_srv_dev struct */
	struct list_head		dev_list;
	struct file			*bdev_file;
	struct rnbd_srv_session		*sess;
	struct rnbd_srv_dev		*dev;
	struct kobject                  kobj;
	u32                             device_id;
	bool				keep_id;
	bool				readonly;
	struct kref			kref;
	struct completion               *destroy_comp;
	char				pathname[NAME_MAX];
	enum rnbd_access_mode		access_mode;
};

void rnbd_srv_sess_dev_force_close(struct rnbd_srv_sess_dev *sess_dev,
				   struct kobj_attribute *attr);
/* rnbd-srv-sysfs.c */

int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev,
			      struct block_device *bdev);
void rnbd_srv_destroy_dev_sysfs(struct rnbd_srv_dev *dev);
int rnbd_srv_create_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev);
void rnbd_srv_destroy_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev);
int rnbd_srv_create_sysfs_files(void);
void rnbd_srv_destroy_sysfs_files(void);
void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id);

#endif /* RNBD_SRV_H */

Annotation

Implementation Notes