forked from Minki/linux
9bc6548f37
A check that rejects a CDB with FUA bit set if no write cache is
emulated was added by the following commit:
fde9f50 target: Add sanity checks for DPO/FUA bit usage
The condition is as follows:
if (!dev->dev_attrib.emulate_fua_write ||
!dev->dev_attrib.emulate_write_cache)
However, this check is wrong if the backend device supports WCE but
"emulate_write_cache" is disabled.
This patch uses se_dev_check_wce() (previously named
spc_check_dev_wce) to invoke transport->get_write_cache() if the
device has a write cache or check the "emulate_write_cache" attribute
otherwise.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
143 lines
5.8 KiB
C
143 lines
5.8 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 target_backend_cits {
|
|
struct config_item_type tb_dev_cit;
|
|
struct config_item_type tb_dev_attrib_cit;
|
|
struct config_item_type tb_dev_pr_cit;
|
|
struct config_item_type tb_dev_wwn_cit;
|
|
struct config_item_type tb_dev_alua_tg_pt_gps_cit;
|
|
struct config_item_type tb_dev_stat_cit;
|
|
};
|
|
|
|
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 *);
|
|
sector_t (*get_alignment_offset_lbas)(struct se_device *);
|
|
/* lbppbe = logical blocks per physical block exponent. see SBC-3 */
|
|
unsigned int (*get_lbppbe)(struct se_device *);
|
|
unsigned int (*get_io_min)(struct se_device *);
|
|
unsigned int (*get_io_opt)(struct se_device *);
|
|
unsigned char *(*get_sense_buffer)(struct se_cmd *);
|
|
bool (*get_write_cache)(struct se_device *);
|
|
int (*init_prot)(struct se_device *);
|
|
int (*format_prot)(struct se_device *);
|
|
void (*free_prot)(struct se_device *);
|
|
|
|
struct target_backend_cits tb_cits;
|
|
};
|
|
|
|
struct sbc_ops {
|
|
sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *,
|
|
u32, enum dma_data_direction);
|
|
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 sbc_dif_generate(struct se_cmd *);
|
|
sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int,
|
|
unsigned int, struct scatterlist *, int);
|
|
sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int,
|
|
unsigned int, struct scatterlist *, int);
|
|
sense_reason_t sbc_dif_read_strip(struct se_cmd *);
|
|
|
|
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 *);
|
|
/* core helpers also used by xcopy during internal command setup */
|
|
int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool);
|
|
sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
|
|
struct scatterlist *, u32, struct scatterlist *, u32);
|
|
|
|
void array_free(void *array, int n);
|
|
|
|
/* From target_core_configfs.c to setup default backend config_item_types */
|
|
void target_core_setup_sub_cits(struct se_subsystem_api *);
|
|
|
|
/* attribute helpers from target_core_device.c for backend drivers */
|
|
bool se_dev_check_wce(struct se_device *);
|
|
int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
|
|
int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
|
|
int se_dev_set_unmap_granularity(struct se_device *, u32);
|
|
int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
|
|
int se_dev_set_max_write_same_len(struct se_device *, u32);
|
|
int se_dev_set_emulate_model_alias(struct se_device *, int);
|
|
int se_dev_set_emulate_dpo(struct se_device *, int);
|
|
int se_dev_set_emulate_fua_write(struct se_device *, int);
|
|
int se_dev_set_emulate_fua_read(struct se_device *, int);
|
|
int se_dev_set_emulate_write_cache(struct se_device *, int);
|
|
int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
|
|
int se_dev_set_emulate_tas(struct se_device *, int);
|
|
int se_dev_set_emulate_tpu(struct se_device *, int);
|
|
int se_dev_set_emulate_tpws(struct se_device *, int);
|
|
int se_dev_set_emulate_caw(struct se_device *, int);
|
|
int se_dev_set_emulate_3pc(struct se_device *, int);
|
|
int se_dev_set_pi_prot_type(struct se_device *, int);
|
|
int se_dev_set_pi_prot_format(struct se_device *, int);
|
|
int se_dev_set_enforce_pr_isids(struct se_device *, int);
|
|
int se_dev_set_force_pr_aptpl(struct se_device *, int);
|
|
int se_dev_set_is_nonrot(struct se_device *, int);
|
|
int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
|
|
int se_dev_set_queue_depth(struct se_device *, u32);
|
|
int se_dev_set_max_sectors(struct se_device *, u32);
|
|
int se_dev_set_optimal_sectors(struct se_device *, u32);
|
|
int se_dev_set_block_size(struct se_device *, u32);
|
|
|
|
#endif /* TARGET_CORE_BACKEND_H */
|