#ifndef TARGET_CORE_BASE_H
  #define TARGET_CORE_BASE_H
  
  #include <linux/in.h>
  #include <linux/configfs.h>
  #include <linux/dma-mapping.h>
  #include <linux/blkdev.h>
  #include <scsi/scsi_cmnd.h>
  #include <net/sock.h>
  #include <net/tcp.h>

  #define TARGET_CORE_MOD_VERSION		"v4.1.0-rc1-ml"

  /* Maximum Number of LUNs per Target Portal Group */

  /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */

  #define TRANSPORT_MAX_LUNS_PER_TPG		256
  /*
   * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
   *
   * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
   * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
   * 16-byte CDBs by default and require an extra allocation for

   * 32-byte CDBs to because of legacy issues.

   *
   * Within TCM Core there are no such legacy limitiations, so we go ahead
   * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
   * within all TCM Core and subsystem plugin code.
   */
  #define TCM_MAX_COMMAND_SIZE			32
  /*
   * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
   * defined 96, but the real limit is 252 (or 260 including the header)
   */
  #define TRANSPORT_SENSE_BUFFER			SCSI_SENSE_BUFFERSIZE
  /* Used by transport_send_check_condition_and_sense() */
  #define SPC_SENSE_KEY_OFFSET			2
  #define SPC_ASC_KEY_OFFSET			12
  #define SPC_ASCQ_KEY_OFFSET			13
  #define TRANSPORT_IQN_LEN			224
  /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
  #define LU_GROUP_NAME_BUF			256
  /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
  #define TG_PT_GROUP_NAME_BUF			256
  /* Used to parse VPD into struct t10_vpd */
  #define VPD_TMP_BUF_SIZE			128
  /* Used by transport_generic_cmd_sequencer() */
  #define READ_BLOCK_LEN          		6
  #define READ_CAP_LEN            		8
  #define READ_POSITION_LEN       		20
  #define INQUIRY_LEN				36
  /* Used by transport_get_inquiry_vpd_serial() */
  #define INQUIRY_VPD_SERIAL_LEN			254
  /* Used by transport_get_inquiry_vpd_device_ident() */
  #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN	254
  
  /* struct se_hba->hba_flags */
  enum hba_flags_table {
  	HBA_FLAGS_INTERNAL_USE	= 0x01,
  	HBA_FLAGS_PSCSI_MODE	= 0x02,
  };
  
  /* struct se_lun->lun_status */
  enum transport_lun_status_table {
  	TRANSPORT_LUN_STATUS_FREE = 0,
  	TRANSPORT_LUN_STATUS_ACTIVE = 1,
  };
  
  /* struct se_portal_group->se_tpg_type */
  enum transport_tpg_type_table {
  	TRANSPORT_TPG_TYPE_NORMAL = 0,
  	TRANSPORT_TPG_TYPE_DISCOVERY = 1,
  };
  
  /* Used for generate timer flags */

  enum se_task_flags {
  	TF_ACTIVE		= (1 << 0),
  	TF_SENT			= (1 << 1),

  	TF_REQUEST_STOP		= (1 << 2),

  };
  
  /* Special transport agnostic struct se_cmd->t_states */
  enum transport_state_table {
  	TRANSPORT_NO_STATE	= 0,
  	TRANSPORT_NEW_CMD	= 1,

  	TRANSPORT_WRITE_PENDING	= 3,
  	TRANSPORT_PROCESS_WRITE	= 4,
  	TRANSPORT_PROCESSING	= 5,

  	TRANSPORT_COMPLETE	= 6,

  	TRANSPORT_PROCESS_TMR	= 9,

  	TRANSPORT_ISTATE_PROCESSING = 11,

  	TRANSPORT_NEW_CMD_MAP	= 16,

  	TRANSPORT_COMPLETE_QF_WP = 18,

  	TRANSPORT_COMPLETE_QF_OK = 19,

  };
  
  /* Used for struct se_cmd->se_cmd_flags */
  enum se_cmd_flags_table {
  	SCF_SUPPORTED_SAM_OPCODE	= 0x00000001,
  	SCF_TRANSPORT_TASK_SENSE	= 0x00000002,
  	SCF_EMULATED_TASK_SENSE		= 0x00000004,
  	SCF_SCSI_DATA_SG_IO_CDB		= 0x00000008,
  	SCF_SCSI_CONTROL_SG_IO_CDB	= 0x00000010,

  	SCF_SCSI_NON_DATA_CDB		= 0x00000040,
  	SCF_SCSI_CDB_EXCEPTION		= 0x00000080,
  	SCF_SCSI_RESERVATION_CONFLICT	= 0x00000100,

  	SCF_FUA				= 0x00000200,

  	SCF_SE_LUN_CMD			= 0x00000800,
  	SCF_SE_ALLOW_EOO		= 0x00001000,

  	SCF_BIDI			= 0x00002000,

  	SCF_SENT_CHECK_CONDITION	= 0x00004000,
  	SCF_OVERFLOW_BIT		= 0x00008000,
  	SCF_UNDERFLOW_BIT		= 0x00010000,
  	SCF_SENT_DELAYED_TAS		= 0x00020000,
  	SCF_ALUA_NON_OPTIMIZED		= 0x00040000,
  	SCF_DELAYED_CMD_FROM_SAM_ATTR	= 0x00080000,

  	SCF_UNUSED			= 0x00100000,

  	SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,

  };
  
  /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
  enum transport_lunflags_table {
  	TRANSPORT_LUNFLAGS_NO_ACCESS		= 0x00,
  	TRANSPORT_LUNFLAGS_INITIATOR_ACCESS	= 0x01,
  	TRANSPORT_LUNFLAGS_READ_ONLY		= 0x02,
  	TRANSPORT_LUNFLAGS_READ_WRITE		= 0x04,
  };
  
  /* struct se_device->dev_status */
  enum transport_device_status_table {
  	TRANSPORT_DEVICE_ACTIVATED		= 0x01,
  	TRANSPORT_DEVICE_DEACTIVATED		= 0x02,
  	TRANSPORT_DEVICE_QUEUE_FULL		= 0x04,
  	TRANSPORT_DEVICE_SHUTDOWN		= 0x08,
  	TRANSPORT_DEVICE_OFFLINE_ACTIVATED	= 0x10,
  	TRANSPORT_DEVICE_OFFLINE_DEACTIVATED	= 0x20,
  };
  
  /*
   * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
   * to signal which ASC/ASCQ sense payload should be built.
   */
  enum tcm_sense_reason_table {
  	TCM_NON_EXISTENT_LUN			= 0x01,
  	TCM_UNSUPPORTED_SCSI_OPCODE		= 0x02,
  	TCM_INCORRECT_AMOUNT_OF_DATA		= 0x03,
  	TCM_UNEXPECTED_UNSOLICITED_DATA		= 0x04,
  	TCM_SERVICE_CRC_ERROR			= 0x05,
  	TCM_SNACK_REJECTED			= 0x06,
  	TCM_SECTOR_COUNT_TOO_MANY		= 0x07,
  	TCM_INVALID_CDB_FIELD			= 0x08,
  	TCM_INVALID_PARAMETER_LIST		= 0x09,
  	TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE	= 0x0a,
  	TCM_UNKNOWN_MODE_PAGE			= 0x0b,
  	TCM_WRITE_PROTECTED			= 0x0c,
  	TCM_CHECK_CONDITION_ABORT_CMD		= 0x0d,
  	TCM_CHECK_CONDITION_UNIT_ATTENTION	= 0x0e,
  	TCM_CHECK_CONDITION_NOT_READY		= 0x0f,

  	TCM_RESERVATION_CONFLICT		= 0x10,

  };
  
  struct se_obj {
  	atomic_t obj_access_count;
  } ____cacheline_aligned;
  
  /*
   * Used by TCM Core internally to signal if ALUA emulation is enabled or
   * disabled, or running in with TCM/pSCSI passthrough mode
   */
  typedef enum {
  	SPC_ALUA_PASSTHROUGH,
  	SPC2_ALUA_DISABLED,
  	SPC3_ALUA_EMULATED
  } t10_alua_index_t;
  
  /*
   * Used by TCM Core internally to signal if SAM Task Attribute emulation
   * is enabled or disabled, or running in with TCM/pSCSI passthrough mode
   */
  typedef enum {
  	SAM_TASK_ATTR_PASSTHROUGH,
  	SAM_TASK_ATTR_UNTAGGED,
  	SAM_TASK_ATTR_EMULATED
  } t10_task_attr_index_t;

  /*
   * Used for target SCSI statistics
   */
  typedef enum {
  	SCSI_INST_INDEX,
  	SCSI_DEVICE_INDEX,
  	SCSI_AUTH_INTR_INDEX,
  	SCSI_INDEX_TYPE_MAX
  } scsi_index_t;

  struct se_cmd;
  
  struct t10_alua {
  	t10_alua_index_t alua_type;
  	/* ALUA Target Port Group ID */
  	u16	alua_tg_pt_gps_counter;
  	u32	alua_tg_pt_gps_count;
  	spinlock_t tg_pt_gps_lock;
  	struct se_subsystem_dev *t10_sub_dev;
  	/* Used for default ALUA Target Port Group */
  	struct t10_alua_tg_pt_gp *default_tg_pt_gp;
  	/* Used for default ALUA Target Port Group ConfigFS group */
  	struct config_group alua_tg_pt_gps_group;
  	int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
  	struct list_head tg_pt_gps_list;
  } ____cacheline_aligned;
  
  struct t10_alua_lu_gp {
  	u16	lu_gp_id;
  	int	lu_gp_valid_id;
  	u32	lu_gp_members;

  	atomic_t lu_gp_ref_cnt;
  	spinlock_t lu_gp_lock;
  	struct config_group lu_gp_group;

  	struct list_head lu_gp_node;

  	struct list_head lu_gp_mem_list;
  } ____cacheline_aligned;
  
  struct t10_alua_lu_gp_member {

  	bool lu_gp_assoc;

  	atomic_t lu_gp_mem_ref_cnt;
  	spinlock_t lu_gp_mem_lock;
  	struct t10_alua_lu_gp *lu_gp;
  	struct se_device *lu_gp_mem_dev;
  	struct list_head lu_gp_mem_list;
  } ____cacheline_aligned;
  
  struct t10_alua_tg_pt_gp {
  	u16	tg_pt_gp_id;
  	int	tg_pt_gp_valid_id;
  	int	tg_pt_gp_alua_access_status;
  	int	tg_pt_gp_alua_access_type;
  	int	tg_pt_gp_nonop_delay_msecs;
  	int	tg_pt_gp_trans_delay_msecs;
  	int	tg_pt_gp_pref;
  	int	tg_pt_gp_write_metadata;
  	/* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
  #define ALUA_MD_BUF_LEN				1024
  	u32	tg_pt_gp_md_buf_len;
  	u32	tg_pt_gp_members;
  	atomic_t tg_pt_gp_alua_access_state;
  	atomic_t tg_pt_gp_ref_cnt;
  	spinlock_t tg_pt_gp_lock;
  	struct mutex tg_pt_gp_md_mutex;
  	struct se_subsystem_dev *tg_pt_gp_su_dev;
  	struct config_group tg_pt_gp_group;
  	struct list_head tg_pt_gp_list;
  	struct list_head tg_pt_gp_mem_list;
  } ____cacheline_aligned;
  
  struct t10_alua_tg_pt_gp_member {

  	bool tg_pt_gp_assoc;

  	atomic_t tg_pt_gp_mem_ref_cnt;
  	spinlock_t tg_pt_gp_mem_lock;
  	struct t10_alua_tg_pt_gp *tg_pt_gp;
  	struct se_port *tg_pt;
  	struct list_head tg_pt_gp_mem_list;
  } ____cacheline_aligned;
  
  struct t10_vpd {
  	unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
  	int protocol_identifier_set;
  	u32 protocol_identifier;
  	u32 device_identifier_code_set;
  	u32 association;
  	u32 device_identifier_type;
  	struct list_head vpd_list;
  } ____cacheline_aligned;
  
  struct t10_wwn {

  	char vendor[8];
  	char model[16];
  	char revision[4];
  	char unit_serial[INQUIRY_VPD_SERIAL_LEN];

  	spinlock_t t10_vpd_lock;
  	struct se_subsystem_dev *t10_sub_dev;
  	struct config_group t10_wwn_group;
  	struct list_head t10_vpd_list;
  } ____cacheline_aligned;
  
  
  /*

   * Used by TCM Core internally to signal if >= SPC-3 persistent reservations

   * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
   * mode
   */
  typedef enum {
  	SPC_PASSTHROUGH,
  	SPC2_RESERVATIONS,
  	SPC3_PERSISTENT_RESERVATIONS
  } t10_reservations_index_t;
  
  struct t10_pr_registration {
  	/* Used for fabrics that contain WWN+ISID */
  #define PR_REG_ISID_LEN				16
  	/* PR_REG_ISID_LEN + ',i,0x' */
  #define PR_REG_ISID_ID_LEN			(PR_REG_ISID_LEN + 5)
  	char pr_reg_isid[PR_REG_ISID_LEN];
  	/* Used during APTPL metadata reading */
  #define PR_APTPL_MAX_IPORT_LEN			256
  	unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
  	/* Used during APTPL metadata reading */
  #define PR_APTPL_MAX_TPORT_LEN			256
  	unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
  	/* For writing out live meta data */
  	unsigned char *pr_aptpl_buf;
  	u16 pr_aptpl_rpti;
  	u16 pr_reg_tpgt;
  	/* Reservation effects all target ports */
  	int pr_reg_all_tg_pt;
  	/* Activate Persistence across Target Power Loss */
  	int pr_reg_aptpl;
  	int pr_res_holder;
  	int pr_res_type;
  	int pr_res_scope;
  	/* Used for fabric initiator WWPNs using a ISID */

  	bool isid_present_at_reg;

  	u32 pr_res_mapped_lun;
  	u32 pr_aptpl_target_lun;
  	u32 pr_res_generation;
  	u64 pr_reg_bin_isid;
  	u64 pr_res_key;
  	atomic_t pr_res_holders;
  	struct se_node_acl *pr_reg_nacl;
  	struct se_dev_entry *pr_reg_deve;
  	struct se_lun *pr_reg_tg_pt_lun;
  	struct list_head pr_reg_list;
  	struct list_head pr_reg_abort_list;
  	struct list_head pr_reg_aptpl_list;
  	struct list_head pr_reg_atp_list;
  	struct list_head pr_reg_atp_mem_list;
  } ____cacheline_aligned;
  
  /*
   * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
   * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
   * core_setup_reservations()
   */
  struct t10_reservation_ops {
  	int (*t10_reservation_check)(struct se_cmd *, u32 *);
  	int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
  	int (*t10_pr_register)(struct se_cmd *);
  	int (*t10_pr_clear)(struct se_cmd *);
  };

  struct t10_reservation {

  	/* Reservation effects all target ports */
  	int pr_all_tg_pt;
  	/* Activate Persistence across Target Power Loss enabled
  	 * for SCSI device */
  	int pr_aptpl_active;

  	/* Used by struct t10_reservation->pr_aptpl_buf_len */

  #define PR_APTPL_BUF_LEN			8192
  	u32 pr_aptpl_buf_len;
  	u32 pr_generation;
  	t10_reservations_index_t res_type;
  	spinlock_t registration_lock;
  	spinlock_t aptpl_reg_lock;
  	/*
  	 * This will always be set by one individual I_T Nexus.
  	 * However with all_tg_pt=1, other I_T Nexus from the
  	 * same initiator can access PR reg/res info on a different
  	 * target port.
  	 *
  	 * There is also the 'All Registrants' case, where there is
  	 * a single *pr_res_holder of the reservation, but all
  	 * registrations are considered reservation holders.
  	 */
  	struct se_node_acl *pr_res_holder;
  	struct list_head registration_list;
  	struct list_head aptpl_reg_list;
  	struct t10_reservation_ops pr_ops;
  } ____cacheline_aligned;
  
  struct se_queue_req {
  	int			state;

  	struct se_cmd		*cmd;

  	struct list_head	qr_list;
  } ____cacheline_aligned;
  
  struct se_queue_obj {
  	atomic_t		queue_cnt;
  	spinlock_t		cmd_queue_lock;
  	struct list_head	qobj_list;
  	wait_queue_head_t	thread_wq;
  } ____cacheline_aligned;

  struct se_task {

  	unsigned long long	task_lba;

  	u32			task_sectors;
  	u32			task_size;
  	struct se_cmd		*task_se_cmd;
  	struct scatterlist	*task_sg;

  	u32			task_sg_nents;
  	u16			task_flags;
  	u8			task_sense;
  	u8			task_scsi_status;
  	int			task_error_status;

  	enum dma_data_direction	task_data_direction;

  	atomic_t		task_state_active;

  	struct list_head	t_list;
  	struct list_head	t_execute_list;
  	struct list_head	t_state_list;
  	struct completion	task_stop_comp;

  } ____cacheline_aligned;

  struct se_cmd {
  	/* SAM response code being sent to initiator */
  	u8			scsi_status;
  	u8			scsi_asc;
  	u8			scsi_ascq;
  	u8			scsi_sense_reason;
  	u16			scsi_sense_length;
  	/* Delay for ALUA Active/NonOptimized state access in milliseconds */
  	int			alua_nonop_delay;
  	/* See include/linux/dma-mapping.h */
  	enum dma_data_direction	data_direction;
  	/* For SAM Task Attribute */
  	int			sam_task_attr;
  	/* Transport protocol dependent state, see transport_state_table */
  	enum transport_state_table t_state;

  	/* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */

  	unsigned		check_release:1;
  	unsigned		cmd_wait_set:1;

  	/* See se_cmd_flags_table */
  	u32			se_cmd_flags;
  	u32			se_ordered_id;
  	/* Total size in bytes associated with command */
  	u32			data_length;
  	/* SCSI Presented Data Transfer Length */
  	u32			cmd_spdtl;
  	u32			residual_count;
  	u32			orig_fe_lun;
  	/* Persistent Reservation key */
  	u64			pr_res_key;

  	/* Used for sense data */
  	void			*sense_buffer;

  	struct list_head	se_delayed_node;

  	struct list_head	se_lun_node;

  	struct list_head	se_qf_node;

  	struct se_device      *se_dev;
  	struct se_dev_entry   *se_deve;

  	struct se_lun		*se_lun;
  	/* Only used for internal passthrough and legacy TCM fabric modules */
  	struct se_session	*se_sess;
  	struct se_tmr_req	*se_tmr_req;

  	struct list_head	se_queue_node;

  	struct list_head	se_cmd_list;
  	struct completion	cmd_wait_comp;

  	struct target_core_fabric_ops *se_tfo;

  	int (*execute_task)(struct se_task *);

  	void (*transport_complete_callback)(struct se_cmd *);

  	unsigned char		*t_task_cdb;
  	unsigned char		__t_task_cdb[TCM_MAX_COMMAND_SIZE];
  	unsigned long long	t_task_lba;
  	int			t_tasks_failed;

  	u32			t_tasks_sg_chained_no;
  	atomic_t		t_fe_count;
  	atomic_t		t_se_count;
  	atomic_t		t_task_cdbs_left;
  	atomic_t		t_task_cdbs_ex_left;

  	atomic_t		t_task_cdbs_sent;
  	atomic_t		t_transport_aborted;
  	atomic_t		t_transport_active;
  	atomic_t		t_transport_complete;
  	atomic_t		t_transport_queue_active;
  	atomic_t		t_transport_sent;
  	atomic_t		t_transport_stop;

  	atomic_t		transport_dev_active;
  	atomic_t		transport_lun_active;
  	atomic_t		transport_lun_fe_stop;
  	atomic_t		transport_lun_stop;
  	spinlock_t		t_state_lock;
  	struct completion	t_transport_stop_comp;
  	struct completion	transport_lun_fe_stop_comp;
  	struct completion	transport_lun_stop_comp;
  	struct scatterlist	*t_tasks_sg_chained;

  	struct work_struct	work;

  	struct scatterlist	*t_data_sg;
  	unsigned int		t_data_nents;
  	struct scatterlist	*t_bidi_data_sg;
  	unsigned int		t_bidi_data_nents;

  	/* Used for BIDI READ */

  	struct list_head	t_task_list;
  	u32			t_task_list_num;

  } ____cacheline_aligned;

  struct se_tmr_req {
  	/* Task Management function to be preformed */
  	u8			function;
  	/* Task Management response to send */
  	u8			response;
  	int			call_transport;
  	/* Reference to ITT that Task Mgmt should be preformed */
  	u32			ref_task_tag;
  	/* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */
  	u64			ref_task_lun;
  	void 			*fabric_tmr_ptr;
  	struct se_cmd		*task_cmd;
  	struct se_cmd		*ref_cmd;
  	struct se_device	*tmr_dev;
  	struct se_lun		*tmr_lun;
  	struct list_head	tmr_list;
  } ____cacheline_aligned;
  
  struct se_ua {
  	u8			ua_asc;
  	u8			ua_ascq;
  	struct se_node_acl	*ua_nacl;
  	struct list_head	ua_dev_list;
  	struct list_head	ua_nacl_list;
  } ____cacheline_aligned;
  
  struct se_node_acl {
  	char			initiatorname[TRANSPORT_IQN_LEN];
  	/* Used to signal demo mode created ACL, disabled by default */

  	bool			dynamic_node_acl;

  	u32			queue_depth;
  	u32			acl_index;
  	u64			num_cmds;
  	u64			read_bytes;
  	u64			write_bytes;
  	spinlock_t		stats_lock;
  	/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
  	atomic_t		acl_pr_ref_count;

  	struct se_dev_entry	*device_list;
  	struct se_session	*nacl_sess;
  	struct se_portal_group *se_tpg;
  	spinlock_t		device_list_lock;
  	spinlock_t		nacl_sess_lock;
  	struct config_group	acl_group;
  	struct config_group	acl_attrib_group;
  	struct config_group	acl_auth_group;
  	struct config_group	acl_param_group;

  	struct config_group	acl_fabric_stat_group;
  	struct config_group	*acl_default_groups[5];

  	struct list_head	acl_list;
  	struct list_head	acl_sess_list;
  } ____cacheline_aligned;
  
  struct se_session {

  	unsigned		sess_tearing_down:1;

  	u64			sess_bin_isid;
  	struct se_node_acl	*se_node_acl;
  	struct se_portal_group *se_tpg;
  	void			*fabric_sess_ptr;
  	struct list_head	sess_list;
  	struct list_head	sess_acl_list;

  	struct list_head	sess_cmd_list;
  	struct list_head	sess_wait_list;
  	spinlock_t		sess_cmd_lock;

  } ____cacheline_aligned;

  struct se_device;
  struct se_transform_info;
  struct scatterlist;

  struct se_ml_stat_grps {
  	struct config_group	stat_group;
  	struct config_group	scsi_auth_intr_group;
  	struct config_group	scsi_att_intr_port_group;
  };

  struct se_lun_acl {
  	char			initiatorname[TRANSPORT_IQN_LEN];
  	u32			mapped_lun;
  	struct se_node_acl	*se_lun_nacl;
  	struct se_lun		*se_lun;
  	struct list_head	lacl_list;
  	struct config_group	se_lun_group;

  	struct se_ml_stat_grps	ml_stat_grps;

  }  ____cacheline_aligned;
  
  struct se_dev_entry {

  	bool			def_pr_registered;

  	/* See transport_lunflags_table */
  	u32			lun_flags;
  	u32			deve_cmds;
  	u32			mapped_lun;
  	u32			average_bytes;
  	u32			last_byte_count;
  	u32			total_cmds;
  	u32			total_bytes;
  	u64			pr_res_key;
  	u64			creation_time;
  	u32			attach_count;
  	u64			read_bytes;
  	u64			write_bytes;
  	atomic_t		ua_count;
  	/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
  	atomic_t		pr_ref_count;
  	struct se_lun_acl	*se_lun_acl;
  	spinlock_t		ua_lock;
  	struct se_lun		*se_lun;
  	struct list_head	alua_port_list;
  	struct list_head	ua_list;
  }  ____cacheline_aligned;
  
  struct se_dev_limits {
  	/* Max supported HW queue depth */
  	u32		hw_queue_depth;
  	/* Max supported virtual queue depth */
  	u32		queue_depth;
  	/* From include/linux/blkdev.h for the other HW/SW limits. */
  	struct queue_limits limits;
  } ____cacheline_aligned;
  
  struct se_dev_attrib {
  	int		emulate_dpo;
  	int		emulate_fua_write;
  	int		emulate_fua_read;
  	int		emulate_write_cache;
  	int		emulate_ua_intlck_ctrl;
  	int		emulate_tas;
  	int		emulate_tpu;
  	int		emulate_tpws;
  	int		emulate_reservations;
  	int		emulate_alua;
  	int		enforce_pr_isids;

  	int		is_nonrot;

  	int		emulate_rest_reord;

  	u32		hw_block_size;
  	u32		block_size;
  	u32		hw_max_sectors;
  	u32		max_sectors;
  	u32		optimal_sectors;
  	u32		hw_queue_depth;
  	u32		queue_depth;

  	u32		max_unmap_lba_count;
  	u32		max_unmap_block_desc_count;
  	u32		unmap_granularity;
  	u32		unmap_granularity_alignment;
  	struct se_subsystem_dev *da_sub_dev;
  	struct config_group da_group;
  } ____cacheline_aligned;

  struct se_dev_stat_grps {
  	struct config_group stat_group;
  	struct config_group scsi_dev_group;
  	struct config_group scsi_tgt_dev_group;
  	struct config_group scsi_lu_group;
  };

  struct se_subsystem_dev {
  /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */
  #define SE_DEV_ALIAS_LEN		512
  	unsigned char	se_dev_alias[SE_DEV_ALIAS_LEN];
  /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */
  #define SE_UDEV_PATH_LEN		512
  	unsigned char	se_dev_udev_path[SE_UDEV_PATH_LEN];
  	u32		su_dev_flags;
  	struct se_hba *se_dev_hba;
  	struct se_device *se_dev_ptr;
  	struct se_dev_attrib se_dev_attrib;
  	/* T10 Asymmetric Logical Unit Assignment for Target Ports */
  	struct t10_alua	t10_alua;
  	/* T10 Inquiry and VPD WWN Information */
  	struct t10_wwn	t10_wwn;
  	/* T10 SPC-2 + SPC-3 Reservations */

  	struct t10_reservation t10_pr;

  	spinlock_t      se_dev_lock;
  	void            *se_dev_su_ptr;

  	struct config_group se_dev_group;
  	/* For T10 Reservations */
  	struct config_group se_dev_pr_group;

  	/* For target_core_stat.c groups */
  	struct se_dev_stat_grps dev_stat_grps;

  } ____cacheline_aligned;

  struct se_device {

  	/* RELATIVE TARGET PORT IDENTIFER Counter */
  	u16			dev_rpti_counter;
  	/* Used for SAM Task Attribute ordering */
  	u32			dev_cur_ordered_id;
  	u32			dev_flags;
  	u32			dev_port_count;
  	/* See transport_device_status_table */
  	u32			dev_status;
  	u32			dev_tcq_window_closed;
  	/* Physical device queue depth */
  	u32			queue_depth;
  	/* Used for SPC-2 reservations enforce of ISIDs */
  	u64			dev_res_bin_isid;
  	t10_task_attr_index_t	dev_task_attr_type;
  	/* Pointer to transport specific device structure */
  	void 			*dev_ptr;
  	u32			dev_index;
  	u64			creation_time;
  	u32			num_resets;
  	u64			num_cmds;
  	u64			read_bytes;
  	u64			write_bytes;
  	spinlock_t		stats_lock;
  	/* Active commands on this virtual SE device */

  	atomic_t		simple_cmds;
  	atomic_t		depth_left;
  	atomic_t		dev_ordered_id;

  	atomic_t		execute_tasks;

  	atomic_t		dev_ordered_sync;

  	atomic_t		dev_qf_count;

  	struct se_obj		dev_obj;
  	struct se_obj		dev_access_obj;
  	struct se_obj		dev_export_obj;

  	struct se_queue_obj	dev_queue_obj;

  	spinlock_t		delayed_cmd_lock;

  	spinlock_t		execute_task_lock;

  	spinlock_t		dev_reservation_lock;

  	spinlock_t		dev_status_lock;

  	spinlock_t		se_port_lock;
  	spinlock_t		se_tmr_lock;

  	spinlock_t		qf_cmd_lock;

  	/* Used for legacy SPC-2 reservationsa */
  	struct se_node_acl	*dev_reserved_node_acl;
  	/* Used for ALUA Logical Unit Group membership */
  	struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
  	/* Used for SPC-3 Persistent Reservations */
  	struct t10_pr_registration *dev_pr_res_holder;
  	struct list_head	dev_sep_list;
  	struct list_head	dev_tmr_list;

  	/* Pointer to descriptor for processing thread */
  	struct task_struct	*process_thread;

  	struct work_struct	qf_work_queue;

  	struct list_head	delayed_cmd_list;

  	struct list_head	execute_task_list;
  	struct list_head	state_task_list;

  	struct list_head	qf_cmd_list;

  	/* Pointer to associated SE HBA */
  	struct se_hba		*se_hba;
  	struct se_subsystem_dev *se_sub_dev;
  	/* Pointer to template of function pointers for transport */
  	struct se_subsystem_api *transport;
  	/* Linked list for struct se_hba struct se_device list */
  	struct list_head	dev_list;

  }  ____cacheline_aligned;

  struct se_hba {
  	u16			hba_tpgt;
  	u32			hba_id;
  	/* See hba_flags_table */
  	u32			hba_flags;
  	/* Virtual iSCSI devices attached. */
  	u32			dev_count;
  	u32			hba_index;

  	/* Pointer to transport specific host structure. */
  	void			*hba_ptr;
  	/* Linked list for struct se_device */
  	struct list_head	hba_dev_list;

  	struct list_head	hba_node;

  	spinlock_t		device_lock;

  	struct config_group	hba_group;
  	struct mutex		hba_access_mutex;
  	struct se_subsystem_api *transport;
  }  ____cacheline_aligned;

  struct se_port_stat_grps {
  	struct config_group stat_group;
  	struct config_group scsi_port_group;
  	struct config_group scsi_tgt_port_group;
  	struct config_group scsi_transport_group;
  };

  struct se_lun {
  	/* See transport_lun_status_table */
  	enum transport_lun_status_table lun_status;
  	u32			lun_access;
  	u32			lun_flags;
  	u32			unpacked_lun;
  	atomic_t		lun_acl_count;
  	spinlock_t		lun_acl_lock;
  	spinlock_t		lun_cmd_lock;
  	spinlock_t		lun_sep_lock;
  	struct completion	lun_shutdown_comp;
  	struct list_head	lun_cmd_list;
  	struct list_head	lun_acl_list;
  	struct se_device	*lun_se_dev;

  	struct se_port		*lun_sep;

  	struct config_group	lun_group;

  	struct se_port_stat_grps port_stat_grps;

  } ____cacheline_aligned;

  struct scsi_port_stats {
         u64     cmd_pdus;
         u64     tx_data_octets;
         u64     rx_data_octets;
  } ____cacheline_aligned;

  struct se_port {
  	/* RELATIVE TARGET PORT IDENTIFER */
  	u16		sep_rtpi;
  	int		sep_tg_pt_secondary_stat;
  	int		sep_tg_pt_secondary_write_md;
  	u32		sep_index;
  	struct scsi_port_stats sep_stats;
  	/* Used for ALUA Target Port Groups membership */

  	atomic_t	sep_tg_pt_secondary_offline;
  	/* Used for PR ALL_TG_PT=1 */
  	atomic_t	sep_tg_pt_ref_cnt;
  	spinlock_t	sep_alua_lock;
  	struct mutex	sep_tg_pt_md_mutex;
  	struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
  	struct se_lun *sep_lun;
  	struct se_portal_group *sep_tpg;
  	struct list_head sep_alua_list;
  	struct list_head sep_list;
  } ____cacheline_aligned;
  
  struct se_tpg_np {

  	struct se_portal_group *tpg_np_parent;

  	struct config_group	tpg_np_group;
  } ____cacheline_aligned;
  
  struct se_portal_group {
  	/* Type of target portal group, see transport_tpg_type_table */
  	enum transport_tpg_type_table se_tpg_type;
  	/* Number of ACLed Initiator Nodes for this TPG */
  	u32			num_node_acls;
  	/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
  	atomic_t		tpg_pr_ref_count;
  	/* Spinlock for adding/removing ACLed Nodes */
  	spinlock_t		acl_node_lock;
  	/* Spinlock for adding/removing sessions */
  	spinlock_t		session_lock;
  	spinlock_t		tpg_lun_lock;
  	/* Pointer to $FABRIC_MOD portal group */
  	void			*se_tpg_fabric_ptr;

  	struct list_head	se_tpg_node;

  	/* linked list for initiator ACL list */
  	struct list_head	acl_node_list;
  	struct se_lun		*tpg_lun_list;
  	struct se_lun		tpg_virt_lun0;

  	/* List of TCM sessions associated wth this TPG */

  	struct list_head	tpg_sess_list;
  	/* Pointer to $FABRIC_MOD dependent code */
  	struct target_core_fabric_ops *se_tpg_tfo;
  	struct se_wwn		*se_tpg_wwn;
  	struct config_group	tpg_group;
  	struct config_group	*tpg_default_groups[6];
  	struct config_group	tpg_lun_group;
  	struct config_group	tpg_np_group;
  	struct config_group	tpg_acl_group;
  	struct config_group	tpg_attrib_group;
  	struct config_group	tpg_param_group;
  } ____cacheline_aligned;

  struct se_wwn {
  	struct target_fabric_configfs *wwn_tf;
  	struct config_group	wwn_group;

  	struct config_group	*wwn_default_groups[2];
  	struct config_group	fabric_stat_group;

  } ____cacheline_aligned;

  #endif /* TARGET_CORE_BASE_H */