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14150a6bbe
Having all the unmap payload parsing in the backed is a bit ugly, but until more drivers support it and we can find a good interface for all of them that seems the way to go. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
73 lines
2.5 KiB
C
73 lines
2.5 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_cmd *cmd, struct scatterlist *);
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int (*parse_cdb)(struct se_cmd *cmd);
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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_cmd *);
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};
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struct spc_ops {
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int (*execute_rw)(struct se_cmd *cmd);
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int (*execute_sync_cache)(struct se_cmd *cmd);
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int (*execute_write_same)(struct se_cmd *cmd);
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int (*execute_unmap)(struct se_cmd *cmd);
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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 target_complete_cmd(struct se_cmd *, u8);
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int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops);
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int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
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int spc_get_write_same_sectors(struct se_cmd *cmd);
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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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