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target: kill struct se_subsystem_dev

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Simplify the code a lot by killing the superflous struct se_subsystem_dev.
Instead se_device is allocated early on by the backend driver, which allocates
it as part of its own per-device structure, borrowing the scheme that is for
example used for inode allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2012-10-08 00:03:19 -04:00
committed by Nicholas Bellinger
parent 3d70f8c617
commit 0fd97ccf45
26 changed files with 1048 additions and 1908 deletions
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25
include/target/target_core_backend.h
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@@ -9,6 +9,8 @@ struct se_subsystem_api {
struct list_head sub_api_list;
char name[16];
char inquiry_prod[16];
char inquiry_rev[4];
struct module *owner;
u8 transport_type;
@@ -16,21 +18,20 @@ struct se_subsystem_api {
int (*attach_hba)(struct se_hba *, u32);
void (*detach_hba)(struct se_hba *);
int (*pmode_enable_hba)(struct se_hba *, unsigned long);
void *(*allocate_virtdevice)(struct se_hba *, const char *);
struct se_device *(*create_virtdevice)(struct se_hba *,
struct se_subsystem_dev *, void *);
void (*free_device)(void *);
struct se_device *(*alloc_device)(struct se_hba *, const char *);
int (*configure_device)(struct se_device *);
void (*free_device)(struct se_device *device);
ssize_t (*set_configfs_dev_params)(struct se_device *,
const char *, ssize_t);
ssize_t (*show_configfs_dev_params)(struct se_device *, char *);
void (*transport_complete)(struct se_cmd *cmd,
struct scatterlist *,
unsigned char *);
int (*parse_cdb)(struct se_cmd *cmd);
ssize_t (*check_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *);
ssize_t (*set_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *, const char *, ssize_t);
ssize_t (*show_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *, char *);
u32 (*get_device_rev)(struct se_device *);
u32 (*get_device_type)(struct se_device *);
sector_t (*get_blocks)(struct se_device *);
@@ -47,10 +48,6 @@ struct spc_ops {
int transport_subsystem_register(struct se_subsystem_api *);
void transport_subsystem_release(struct se_subsystem_api *);
struct se_device *transport_add_device_to_core_hba(struct se_hba *,
struct se_subsystem_api *, struct se_subsystem_dev *, u32,
void *, struct se_dev_limits *, const char *, const char *);
void target_complete_cmd(struct se_cmd *, u8);
int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops);