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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/target/target_core_fabric_ops.h
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/* Defined in target_core_configfs.h */

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struct target_fabric_configfs;

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struct target_core_fabric_ops {

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	struct configfs_subsystem *tf_subsys;

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	/*

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	 * Optional to signal struct se_task->task_sg[] padding entries

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	 * for scatterlist chaining using transport_do_task_sg_link(),

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	 * disabled by default

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	 */

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	bool task_sg_chaining;

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	char *(*get_fabric_name)(void);

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	u8 (*get_fabric_proto_ident)(struct se_portal_group *);

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	char *(*tpg_get_wwn)(struct se_portal_group *);

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	u16 (*tpg_get_tag)(struct se_portal_group *);

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	u32 (*tpg_get_default_depth)(struct se_portal_group *);

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	u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,

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				struct se_node_acl *,

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				struct t10_pr_registration *, int *,

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				unsigned char *);

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	u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,

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				struct se_node_acl *,

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				struct t10_pr_registration *, int *);

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	char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,

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				const char *, u32 *, char **);

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	int (*tpg_check_demo_mode)(struct se_portal_group *);

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	int (*tpg_check_demo_mode_cache)(struct se_portal_group *);

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	int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);

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	int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);

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	struct se_node_acl *(*tpg_alloc_fabric_acl)(

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					struct se_portal_group *);

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	void (*tpg_release_fabric_acl)(struct se_portal_group *,

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					struct se_node_acl *);

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	u32 (*tpg_get_inst_index)(struct se_portal_group *);

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	/*

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	 * Optional function pointer for TCM to perform command map

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	 * from TCM processing thread context, for those struct se_cmd

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	 * initially allocated in interrupt context.

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	 */

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	int (*new_cmd_map)(struct se_cmd *);

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	/*

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	 * Optional function pointer for TCM fabric modules that use

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	 * Linux/NET sockets to allocate struct iovec array to struct se_cmd

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	 */

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	int (*alloc_cmd_iovecs)(struct se_cmd *);

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	/*

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	 * Optional to release struct se_cmd and fabric dependent allocated

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	 * I/O descriptor in transport_cmd_check_stop()

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	 */

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	void (*check_stop_free)(struct se_cmd *);

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	void (*release_cmd_to_pool)(struct se_cmd *);

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	void (*release_cmd_direct)(struct se_cmd *);

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	/*

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	 * Called with spin_lock_bh(struct se_portal_group->session_lock held.

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	 */

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	int (*shutdown_session)(struct se_session *);

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	void (*close_session)(struct se_session *);

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	void (*stop_session)(struct se_session *, int, int);

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	void (*fall_back_to_erl0)(struct se_session *);

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	int (*sess_logged_in)(struct se_session *);

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	u32 (*sess_get_index)(struct se_session *);

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	/*

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	 * Used only for SCSI fabrics that contain multi-value TransportIDs

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	 * (like iSCSI).  All other SCSI fabrics should set this to NULL.

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	 */

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	u32 (*sess_get_initiator_sid)(struct se_session *,

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				      unsigned char *, u32);

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	int (*write_pending)(struct se_cmd *);

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	int (*write_pending_status)(struct se_cmd *);

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	void (*set_default_node_attributes)(struct se_node_acl *);

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	u32 (*get_task_tag)(struct se_cmd *);

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	int (*get_cmd_state)(struct se_cmd *);

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	void (*new_cmd_failure)(struct se_cmd *);

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	int (*queue_data_in)(struct se_cmd *);

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	int (*queue_status)(struct se_cmd *);

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	int (*queue_tm_rsp)(struct se_cmd *);

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	u16 (*set_fabric_sense_len)(struct se_cmd *, u32);

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	u16 (*get_fabric_sense_len)(void);

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	int (*is_state_remove)(struct se_cmd *);

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	/*

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	 * fabric module calls for target_core_fabric_configfs.c

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	 */

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	struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,

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				struct config_group *, const char *);

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	void (*fabric_drop_wwn)(struct se_wwn *);

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	struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,

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				struct config_group *, const char *);

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	void (*fabric_drop_tpg)(struct se_portal_group *);

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	int (*fabric_post_link)(struct se_portal_group *,

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				struct se_lun *);

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	void (*fabric_pre_unlink)(struct se_portal_group *,

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				struct se_lun *);

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	struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,

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				struct config_group *, const char *);

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	void (*fabric_drop_np)(struct se_tpg_np *);

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	struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,

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				struct config_group *, const char *);

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	void (*fabric_drop_nodeacl)(struct se_node_acl *);

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};

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