mirror of
https://github.com/hardkernel/linux.git
synced 2026-04-12 07:58:10 +09:00
be03ed7ca0
commit 2426bd456a upstream.
When an initiator sends an allocation length bigger than what its
command consumes, the target should only return the actual response data
and set the residual length to the unused part of the allocation length.
Add a helper function that command handlers (INQUIRY, READ CAPACITY,
etc) can use to do this correctly, and use this code to get the correct
residual for commands that don't use the full initiator allocation in the
handlers for READ CAPACITY, READ CAPACITY(16), INQUIRY, MODE SENSE and
REPORT LUNS.
This addresses a handful of failures as reported by Christophe with
the Windows Certification Kit:
http://permalink.gmane.org/gmane.linux.scsi.target.devel/6515
Signed-off-by: Roland Dreier <roland@purestorage.com>
Tested-by: Christophe Vu-Brugier <cvubrugier@yahoo.fr>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
#ifndef TARGET_CORE_BACKEND_H
|
|
#define TARGET_CORE_BACKEND_H
|
|
|
|
#define TRANSPORT_PLUGIN_PHBA_PDEV 1
|
|
#define TRANSPORT_PLUGIN_VHBA_PDEV 2
|
|
#define TRANSPORT_PLUGIN_VHBA_VDEV 3
|
|
|
|
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;
|
|
|
|
int (*attach_hba)(struct se_hba *, u32);
|
|
void (*detach_hba)(struct se_hba *);
|
|
int (*pmode_enable_hba)(struct se_hba *, unsigned long);
|
|
|
|
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 *);
|
|
|
|
sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
|
|
u32 (*get_device_type)(struct se_device *);
|
|
sector_t (*get_blocks)(struct se_device *);
|
|
unsigned char *(*get_sense_buffer)(struct se_cmd *);
|
|
bool (*get_write_cache)(struct se_device *);
|
|
};
|
|
|
|
struct sbc_ops {
|
|
sense_reason_t (*execute_rw)(struct se_cmd *cmd);
|
|
sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
|
|
sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
|
|
sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd);
|
|
sense_reason_t (*execute_unmap)(struct se_cmd *cmd);
|
|
};
|
|
|
|
int transport_subsystem_register(struct se_subsystem_api *);
|
|
void transport_subsystem_release(struct se_subsystem_api *);
|
|
|
|
void target_complete_cmd(struct se_cmd *, u8);
|
|
void target_complete_cmd_with_length(struct se_cmd *, u8, int);
|
|
|
|
sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
|
|
sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
|
|
sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);
|
|
sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *);
|
|
|
|
sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
|
|
u32 sbc_get_device_rev(struct se_device *dev);
|
|
u32 sbc_get_device_type(struct se_device *dev);
|
|
sector_t sbc_get_write_same_sectors(struct se_cmd *cmd);
|
|
sense_reason_t sbc_execute_unmap(struct se_cmd *cmd,
|
|
sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv,
|
|
sector_t lba, sector_t nolb),
|
|
void *priv);
|
|
|
|
void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
|
|
int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
|
|
int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
|
|
int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
|
|
|
|
/* core helpers also used by command snooping in pscsi */
|
|
void *transport_kmap_data_sg(struct se_cmd *);
|
|
void transport_kunmap_data_sg(struct se_cmd *);
|
|
|
|
void array_free(void *array, int n);
|
|
|
|
#endif /* TARGET_CORE_BACKEND_H */
|