ed3102c678
Now that tasks are always the same size as the command there is no need to rewrite a CDB in common code. Notw that we keep the separately allocated CDB in the pscsi and stgt backends for now, to easy reintroducing any command splitting local to these backends if nessecary. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
#ifndef TARGET_CORE_BACKEND_H
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#define TARGET_CORE_BACKEND_H
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#define TRANSPORT_PLUGIN_PHBA_PDEV 1
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#define TRANSPORT_PLUGIN_VHBA_PDEV 2
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#define TRANSPORT_PLUGIN_VHBA_VDEV 3
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struct se_subsystem_api {
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struct list_head sub_api_list;
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char name[16];
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struct module *owner;
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u8 transport_type;
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unsigned int fua_write_emulated : 1;
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unsigned int write_cache_emulated : 1;
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int (*attach_hba)(struct se_hba *, u32);
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void (*detach_hba)(struct se_hba *);
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int (*pmode_enable_hba)(struct se_hba *, unsigned long);
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void *(*allocate_virtdevice)(struct se_hba *, const char *);
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struct se_device *(*create_virtdevice)(struct se_hba *,
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struct se_subsystem_dev *, void *);
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void (*free_device)(void *);
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int (*transport_complete)(struct se_task *task);
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struct se_task *(*alloc_task)(unsigned char *cdb);
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int (*do_task)(struct se_task *);
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int (*do_discard)(struct se_device *, sector_t, u32);
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void (*do_sync_cache)(struct se_task *);
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void (*free_task)(struct se_task *);
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ssize_t (*check_configfs_dev_params)(struct se_hba *,
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struct se_subsystem_dev *);
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ssize_t (*set_configfs_dev_params)(struct se_hba *,
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struct se_subsystem_dev *, const char *, ssize_t);
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ssize_t (*show_configfs_dev_params)(struct se_hba *,
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struct se_subsystem_dev *, char *);
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u32 (*get_device_rev)(struct se_device *);
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u32 (*get_device_type)(struct se_device *);
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sector_t (*get_blocks)(struct se_device *);
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unsigned char *(*get_sense_buffer)(struct se_task *);
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};
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int transport_subsystem_register(struct se_subsystem_api *);
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void transport_subsystem_release(struct se_subsystem_api *);
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struct se_device *transport_add_device_to_core_hba(struct se_hba *,
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struct se_subsystem_api *, struct se_subsystem_dev *, u32,
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void *, struct se_dev_limits *, const char *, const char *);
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void transport_complete_sync_cache(struct se_cmd *, int);
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void transport_complete_task(struct se_task *, int);
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void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
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int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
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int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
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int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
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/* core helpers also used by command snooping in pscsi */
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void *transport_kmap_data_sg(struct se_cmd *);
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void transport_kunmap_data_sg(struct se_cmd *);
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void array_free(void *array, int n);
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#endif /* TARGET_CORE_BACKEND_H */
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