#ifndef TARGET_CORE_BASE_H #define TARGET_CORE_BASE_H #include #include #include #include #include #include #include #define TARGET_CORE_MOD_VERSION "v4.0.0-rc6" #define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT)) /* Used by transport_generic_allocate_iovecs() */ #define TRANSPORT_IOV_DATA_BUFFER 5 /* Maximum Number of LUNs per Target Portal Group */ #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 becasue 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 timer_flags_table { TF_RUNNING = 0x01, TF_STOP = 0x02, }; /* Special transport agnostic struct se_cmd->t_states */ enum transport_state_table { TRANSPORT_NO_STATE = 0, TRANSPORT_NEW_CMD = 1, TRANSPORT_DEFERRED_CMD = 2, TRANSPORT_WRITE_PENDING = 3, TRANSPORT_PROCESS_WRITE = 4, TRANSPORT_PROCESSING = 5, TRANSPORT_COMPLETE_OK = 6, TRANSPORT_COMPLETE_FAILURE = 7, TRANSPORT_COMPLETE_TIMEOUT = 8, TRANSPORT_PROCESS_TMR = 9, TRANSPORT_TMR_COMPLETE = 10, TRANSPORT_ISTATE_PROCESSING = 11, TRANSPORT_ISTATE_PROCESSED = 12, TRANSPORT_KILL = 13, TRANSPORT_REMOVE = 14, TRANSPORT_FREE = 15, TRANSPORT_NEW_CMD_MAP = 16, }; /* 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_CONTROL_NONSG_IO_CDB = 0x00000020, SCF_SCSI_NON_DATA_CDB = 0x00000040, SCF_SCSI_CDB_EXCEPTION = 0x00000080, SCF_SCSI_RESERVATION_CONFLICT = 0x00000100, SCF_CMD_PASSTHROUGH_NOALLOC = 0x00000200, SCF_SE_CMD_FAILED = 0x00000400, SCF_SE_LUN_CMD = 0x00000800, SCF_SE_ALLOW_EOO = 0x00001000, SCF_SE_DISABLE_ONLINE_CHECK = 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_PASSTHROUGH_SG_TO_MEM = 0x00100000, SCF_PASSTHROUGH_CONTIG_TO_SG = 0x00200000, SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000, SCF_EMULATE_SYNC_CACHE = 0x00800000, SCF_EMULATE_CDB_ASYNC = 0x01000000, SCF_EMULATE_SYNC_UNMAP = 0x02000000 }; /* 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, }; 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 scsi_index_table { spinlock_t lock; u32 scsi_mib_index[SCSI_INDEX_TYPE_MAX]; } ____cacheline_aligned; 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_shutdown; atomic_t lu_gp_ref_cnt; spinlock_t lu_gp_lock; struct config_group lu_gp_group; struct list_head lu_gp_list; struct list_head lu_gp_mem_list; } ____cacheline_aligned; struct t10_alua_lu_gp_member { int lu_gp_assoc:1; 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 { int tg_pt_gp_assoc:1; 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 { unsigned char vendor[8]; unsigned char model[16]; unsigned char revision[4]; unsigned 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 peristent 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 */ int isid_present_at_reg:1; 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_template { /* 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_template->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; void *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; /* * Used one per struct se_cmd to hold all extra struct se_task * metadata. This structure is setup and allocated in * drivers/target/target_core_transport.c:__transport_alloc_se_cmd() */ struct se_transport_task { unsigned char *t_task_cdb; unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; unsigned long long t_task_lba; int t_tasks_failed; int t_tasks_fua; int t_tasks_bidi:1; u32 t_task_cdbs; u32 t_tasks_check; u32 t_tasks_no; u32 t_tasks_sectors; u32 t_tasks_se_num; u32 t_tasks_se_bidi_num; 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_timeout_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 t_transport_timeout; 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 scatterlist t_tasks_sg_bounce; void *t_task_buf; /* * Used for pre-registered fabric SGL passthrough WRITE and READ * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop * and other HW target mode fabric modules. */ struct scatterlist *t_task_pt_sgl; struct list_head *t_mem_list; /* Used for BIDI READ */ struct list_head *t_mem_bidi_list; struct list_head t_task_list; } ____cacheline_aligned; struct se_task { unsigned char task_sense; struct scatterlist *task_sg; struct scatterlist *task_sg_bidi; u8 task_scsi_status; u8 task_flags; int task_error_status; int task_state_flags; int task_padded_sg:1; unsigned long long task_lba; u32 task_no; u32 task_sectors; u32 task_size; u32 task_sg_num; u32 task_sg_offset; enum dma_data_direction task_data_direction; struct se_cmd *task_se_cmd; struct se_device *se_dev; struct completion task_stop_comp; atomic_t task_active; atomic_t task_execute_queue; atomic_t task_timeout; atomic_t task_sent; atomic_t task_stop; atomic_t task_state_active; struct timer_list task_timer; struct se_device *se_obj_ptr; struct list_head t_list; struct list_head t_execute_list; struct list_head t_state_list; } ____cacheline_aligned; #define TASK_CMD(task) ((struct se_cmd *)task->task_se_cmd) #define TASK_DEV(task) ((struct se_device *)task->se_dev) 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; /* Transport protocol dependent state for out of order CmdSNs */ int deferred_t_state; /* Transport specific error status */ int transport_error_status; /* 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; atomic_t transport_sent; /* Used for sense data */ void *sense_buffer; struct list_head se_delayed_list; struct list_head se_ordered_list; struct list_head se_lun_list; struct se_device *se_dev; struct se_dev_entry *se_deve; struct se_device *se_obj_ptr; struct se_device *se_orig_obj_ptr; 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; /* t_task is setup to t_task_backstore in transport_init_se_cmd() */ struct se_transport_task *t_task; struct se_transport_task t_task_backstore; struct target_core_fabric_ops *se_tfo; int (*transport_emulate_cdb)(struct se_cmd *); void (*transport_split_cdb)(unsigned long long, u32 *, unsigned char *); void (*transport_wait_for_tasks)(struct se_cmd *, int, int); void (*transport_complete_callback)(struct se_cmd *); } ____cacheline_aligned; #define T_TASK(cmd) ((struct se_transport_task *)(cmd->t_task)) #define CMD_TFO(cmd) ((struct target_core_fabric_ops *)cmd->se_tfo) 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 */ int dynamic_node_acl:1; 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_default_groups[4]; struct list_head acl_list; struct list_head acl_sess_list; } ____cacheline_aligned; struct se_session { 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; } ____cacheline_aligned; #define SE_SESS(cmd) ((struct se_session *)(cmd)->se_sess) #define SE_NODE_ACL(sess) ((struct se_node_acl *)(sess)->se_node_acl) struct se_device; struct se_transform_info; struct scatterlist; 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; } ____cacheline_aligned; struct se_dev_entry { int def_pr_registered:1; /* 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; 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 task_timeout; 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_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_template t10_reservation; spinlock_t se_dev_lock; void *se_dev_su_ptr; struct list_head g_se_dev_list; struct config_group se_dev_group; /* For T10 Reservations */ struct config_group se_dev_pr_group; } ____cacheline_aligned; #define T10_ALUA(su_dev) (&(su_dev)->t10_alua) #define T10_RES(su_dev) (&(su_dev)->t10_reservation) #define T10_PR_OPS(su_dev) (&(su_dev)->t10_reservation.pr_ops) struct se_device { /* Set to 1 if thread is NOT sleeping on thread_sem */ u8 thread_active; u8 dev_status_timer_flags; /* 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 active_cmds; atomic_t simple_cmds; atomic_t depth_left; atomic_t dev_ordered_id; atomic_t dev_tur_active; atomic_t execute_tasks; atomic_t dev_status_thr_count; atomic_t dev_hoq_count; atomic_t dev_ordered_sync; struct se_obj dev_obj; struct se_obj dev_access_obj; struct se_obj dev_export_obj; struct se_queue_obj *dev_queue_obj; struct se_queue_obj *dev_status_queue_obj; spinlock_t delayed_cmd_lock; spinlock_t ordered_cmd_lock; spinlock_t execute_task_lock; spinlock_t state_task_lock; spinlock_t dev_alua_lock; spinlock_t dev_reservation_lock; spinlock_t dev_state_lock; spinlock_t dev_status_lock; spinlock_t dev_status_thr_lock; spinlock_t se_port_lock; spinlock_t se_tmr_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; struct timer_list dev_status_timer; /* Pointer to descriptor for processing thread */ struct task_struct *process_thread; pid_t process_thread_pid; struct task_struct *dev_mgmt_thread; struct list_head delayed_cmd_list; struct list_head ordered_cmd_list; struct list_head execute_task_list; struct list_head state_task_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; /* Linked list for struct se_global->g_se_dev_list */ struct list_head g_se_dev_list; } ____cacheline_aligned; #define SE_DEV(cmd) ((struct se_device *)(cmd)->se_lun->lun_se_dev) #define SU_DEV(dev) ((struct se_subsystem_dev *)(dev)->se_sub_dev) #define DEV_ATTRIB(dev) (&(dev)->se_sub_dev->se_dev_attrib) #define DEV_T10_WWN(dev) (&(dev)->se_sub_dev->t10_wwn) 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; atomic_t load_balance_queue; atomic_t left_queue_depth; /* Maximum queue depth the HBA can handle. */ atomic_t max_queue_depth; /* 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_list; spinlock_t device_lock; spinlock_t hba_queue_lock; struct config_group hba_group; struct mutex hba_access_mutex; struct se_subsystem_api *transport; } ____cacheline_aligned; #define SE_HBA(d) ((struct se_hba *)(d)->se_hba) 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 config_group lun_group; struct se_port *lun_sep; } ____cacheline_aligned; #define SE_LUN(c) ((struct se_lun *)(c)->se_lun) 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_gp_active; 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 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_list; /* 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 assoicated 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; #define TPG_TFO(se_tpg) ((struct target_core_fabric_ops *)(se_tpg)->se_tpg_tfo) struct se_wwn { struct target_fabric_configfs *wwn_tf; struct config_group wwn_group; } ____cacheline_aligned; struct se_global { u16 alua_lu_gps_counter; int g_sub_api_initialized; u32 in_shutdown; u32 alua_lu_gps_count; u32 g_hba_id_counter; struct config_group target_core_hbagroup; struct config_group alua_group; struct config_group alua_lu_gps_group; struct list_head g_lu_gps_list; struct list_head g_se_tpg_list; struct list_head g_hba_list; struct list_head g_se_dev_list; struct se_hba *g_lun0_hba; struct se_subsystem_dev *g_lun0_su_dev; struct se_device *g_lun0_dev; struct t10_alua_lu_gp *default_lu_gp; spinlock_t g_device_lock; spinlock_t hba_lock; spinlock_t se_tpg_lock; spinlock_t lu_gps_lock; spinlock_t plugin_class_lock; } ____cacheline_aligned; #endif /* TARGET_CORE_BASE_H */