| #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 <linux/percpu_ida.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <net/sock.h> |
| #include <net/tcp.h> |
| |
| #define TARGET_CORE_MOD_VERSION "v4.1.0" |
| #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION |
| |
| /* 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_ADD_SENSE_LEN_OFFSET 7 |
| #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 254 |
| /* 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 |
| |
| /* Attempts before moving from SHORT to LONG */ |
| #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 |
| #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ |
| #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ |
| |
| #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ |
| |
| /* struct se_dev_attrib sanity values */ |
| /* Default max_unmap_lba_count */ |
| #define DA_MAX_UNMAP_LBA_COUNT 0 |
| /* Default max_unmap_block_desc_count */ |
| #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 |
| /* Default unmap_granularity */ |
| #define DA_UNMAP_GRANULARITY_DEFAULT 0 |
| /* Default unmap_granularity_alignment */ |
| #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 |
| /* Default max_write_same_len, disabled by default */ |
| #define DA_MAX_WRITE_SAME_LEN 0 |
| /* Default max transfer length */ |
| #define DA_FABRIC_MAX_SECTORS 8192 |
| /* Use a model alias based on the configfs backend device name */ |
| #define DA_EMULATE_MODEL_ALIAS 0 |
| /* Emulation for Direct Page Out */ |
| #define DA_EMULATE_DPO 0 |
| /* Emulation for Forced Unit Access WRITEs */ |
| #define DA_EMULATE_FUA_WRITE 1 |
| /* Emulation for Forced Unit Access READs */ |
| #define DA_EMULATE_FUA_READ 0 |
| /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ |
| #define DA_EMULATE_WRITE_CACHE 0 |
| /* Emulation for UNIT ATTENTION Interlock Control */ |
| #define DA_EMULATE_UA_INTLLCK_CTRL 0 |
| /* Emulation for TASK_ABORTED status (TAS) by default */ |
| #define DA_EMULATE_TAS 1 |
| /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ |
| #define DA_EMULATE_TPU 0 |
| /* |
| * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using |
| * block/blk-lib.c:blkdev_issue_discard() |
| */ |
| #define DA_EMULATE_TPWS 0 |
| /* Emulation for CompareAndWrite (AtomicTestandSet) by default */ |
| #define DA_EMULATE_CAW 1 |
| /* Emulation for 3rd Party Copy (ExtendedCopy) by default */ |
| #define DA_EMULATE_3PC 1 |
| /* No Emulation for PSCSI by default */ |
| #define DA_EMULATE_ALUA 0 |
| /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ |
| #define DA_ENFORCE_PR_ISIDS 1 |
| #define DA_STATUS_MAX_SECTORS_MIN 16 |
| #define DA_STATUS_MAX_SECTORS_MAX 8192 |
| /* By default don't report non-rotating (solid state) medium */ |
| #define DA_IS_NONROT 0 |
| /* Queue Algorithm Modifier default for restricted reordering in control mode page */ |
| #define DA_EMULATE_REST_REORD 0 |
| |
| #define SE_INQUIRY_BUF 512 |
| #define SE_MODE_PAGE_BUF 512 |
| #define SE_SENSE_BUF 96 |
| |
| /* 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, |
| }; |
| |
| /* 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_PROCESSING = 5, |
| TRANSPORT_COMPLETE = 6, |
| TRANSPORT_ISTATE_PROCESSING = 11, |
| 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_CDB = 0x00000008, |
| SCF_SCSI_TMR_CDB = 0x00000010, |
| SCF_FUA = 0x00000080, |
| SCF_SE_LUN_CMD = 0x00000100, |
| SCF_BIDI = 0x00000400, |
| SCF_SENT_CHECK_CONDITION = 0x00000800, |
| SCF_OVERFLOW_BIT = 0x00001000, |
| SCF_UNDERFLOW_BIT = 0x00002000, |
| SCF_SENT_DELAYED_TAS = 0x00004000, |
| SCF_ALUA_NON_OPTIMIZED = 0x00008000, |
| SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, |
| SCF_ACK_KREF = 0x00040000, |
| SCF_COMPARE_AND_WRITE = 0x00080000, |
| SCF_COMPARE_AND_WRITE_POST = 0x00100000, |
| SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000, |
| }; |
| |
| /* 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, |
| }; |
| |
| /* |
| * Used by transport_send_check_condition_and_sense() |
| * to signal which ASC/ASCQ sense payload should be built. |
| */ |
| typedef unsigned __bitwise__ sense_reason_t; |
| |
| enum tcm_sense_reason_table { |
| #define R(x) (__force sense_reason_t )(x) |
| TCM_NO_SENSE = R(0x00), |
| TCM_NON_EXISTENT_LUN = R(0x01), |
| TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), |
| TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), |
| TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), |
| TCM_SERVICE_CRC_ERROR = R(0x05), |
| TCM_SNACK_REJECTED = R(0x06), |
| TCM_SECTOR_COUNT_TOO_MANY = R(0x07), |
| TCM_INVALID_CDB_FIELD = R(0x08), |
| TCM_INVALID_PARAMETER_LIST = R(0x09), |
| TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), |
| TCM_UNKNOWN_MODE_PAGE = R(0x0b), |
| TCM_WRITE_PROTECTED = R(0x0c), |
| TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), |
| TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), |
| TCM_CHECK_CONDITION_NOT_READY = R(0x0f), |
| TCM_RESERVATION_CONFLICT = R(0x10), |
| TCM_ADDRESS_OUT_OF_RANGE = R(0x11), |
| TCM_OUT_OF_RESOURCES = R(0x12), |
| TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), |
| TCM_MISCOMPARE_VERIFY = R(0x14), |
| #undef R |
| }; |
| |
| enum target_sc_flags_table { |
| TARGET_SCF_BIDI_OP = 0x01, |
| TARGET_SCF_ACK_KREF = 0x02, |
| TARGET_SCF_UNKNOWN_SIZE = 0x04, |
| }; |
| |
| /* fabric independent task management function values */ |
| enum tcm_tmreq_table { |
| TMR_ABORT_TASK = 1, |
| TMR_ABORT_TASK_SET = 2, |
| TMR_CLEAR_ACA = 3, |
| TMR_CLEAR_TASK_SET = 4, |
| TMR_LUN_RESET = 5, |
| TMR_TARGET_WARM_RESET = 6, |
| TMR_TARGET_COLD_RESET = 7, |
| }; |
| |
| /* fabric independent task management response values */ |
| enum tcm_tmrsp_table { |
| TMR_FUNCTION_FAILED = 0, |
| TMR_FUNCTION_COMPLETE = 1, |
| TMR_TASK_DOES_NOT_EXIST = 2, |
| TMR_LUN_DOES_NOT_EXIST = 3, |
| TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, |
| TMR_FUNCTION_REJECTED = 5, |
| }; |
| |
| /* |
| * 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 { |
| /* 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_device *t10_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; |
| struct list_head tg_pt_gps_list; |
| }; |
| |
| 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; |
| }; |
| |
| 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; |
| }; |
| |
| 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_implict_trans_secs; |
| 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_device *tg_pt_gp_dev; |
| struct config_group tg_pt_gp_group; |
| struct list_head tg_pt_gp_list; |
| struct list_head tg_pt_gp_mem_list; |
| }; |
| |
| 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; |
| }; |
| |
| 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; |
| }; |
| |
| 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_device *t10_dev; |
| struct config_group t10_wwn_group; |
| struct list_head t10_vpd_list; |
| }; |
| |
| 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]; |
| 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; |
| }; |
| |
| 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; |
| #define PR_APTPL_BUF_LEN 8192 |
| u32 pr_generation; |
| 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 se_tmr_req { |
| /* Task Management function to be performed */ |
| u8 function; |
| /* Task Management response to send */ |
| u8 response; |
| int call_transport; |
| /* Reference to ITT that Task Mgmt should be performed */ |
| u32 ref_task_tag; |
| void *fabric_tmr_ptr; |
| struct se_cmd *task_cmd; |
| struct se_device *tmr_dev; |
| struct se_lun *tmr_lun; |
| struct list_head tmr_list; |
| }; |
| |
| struct se_cmd { |
| /* SAM response code being sent to initiator */ |
| u8 scsi_status; |
| u8 scsi_asc; |
| u8 scsi_ascq; |
| 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; |
| /* Used for se_sess->sess_tag_pool */ |
| unsigned int map_tag; |
| /* Transport protocol dependent state, see transport_state_table */ |
| enum transport_state_table t_state; |
| unsigned cmd_wait_set:1; |
| unsigned unknown_data_length:1; |
| /* See se_cmd_flags_table */ |
| u32 se_cmd_flags; |
| u32 se_ordered_id; |
| /* Total size in bytes associated with command */ |
| u32 data_length; |
| 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_cmd_list; |
| struct completion cmd_wait_comp; |
| struct kref cmd_kref; |
| struct target_core_fabric_ops *se_tfo; |
| sense_reason_t (*execute_cmd)(struct se_cmd *); |
| sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *, |
| u32, enum dma_data_direction); |
| sense_reason_t (*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; |
| unsigned int t_task_nolb; |
| unsigned int transport_state; |
| #define CMD_T_ABORTED (1 << 0) |
| #define CMD_T_ACTIVE (1 << 1) |
| #define CMD_T_COMPLETE (1 << 2) |
| #define CMD_T_SENT (1 << 4) |
| #define CMD_T_STOP (1 << 5) |
| #define CMD_T_FAILED (1 << 6) |
| #define CMD_T_LUN_STOP (1 << 7) |
| #define CMD_T_LUN_FE_STOP (1 << 8) |
| #define CMD_T_DEV_ACTIVE (1 << 9) |
| #define CMD_T_REQUEST_STOP (1 << 10) |
| #define CMD_T_BUSY (1 << 11) |
| 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 work_struct work; |
| |
| struct scatterlist *t_data_sg; |
| struct scatterlist *t_data_sg_orig; |
| unsigned int t_data_nents; |
| unsigned int t_data_nents_orig; |
| void *t_data_vmap; |
| struct scatterlist *t_bidi_data_sg; |
| unsigned int t_bidi_data_nents; |
| |
| struct list_head state_list; |
| bool state_active; |
| |
| /* old task stop completion, consider merging with some of the above */ |
| struct completion task_stop_comp; |
| |
| /* backend private data */ |
| void *priv; |
| |
| /* Used for lun->lun_ref counting */ |
| bool lun_ref_active; |
| }; |
| |
| 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; |
| }; |
| |
| struct se_node_acl { |
| char initiatorname[TRANSPORT_IQN_LEN]; |
| /* Used to signal demo mode created ACL, disabled by default */ |
| bool dynamic_node_acl; |
| bool acl_stop:1; |
| u32 queue_depth; |
| u32 acl_index; |
| #define MAX_ACL_TAG_SIZE 64 |
| char acl_tag[MAX_ACL_TAG_SIZE]; |
| 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; |
| struct completion acl_free_comp; |
| struct kref acl_kref; |
| }; |
| |
| 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; |
| struct kref sess_kref; |
| void *sess_cmd_map; |
| struct percpu_ida sess_tag_pool; |
| }; |
| |
| 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; |
| }; |
| |
| struct se_dev_entry { |
| bool def_pr_registered; |
| /* See transport_lunflags_table */ |
| u32 lun_flags; |
| u32 mapped_lun; |
| u32 total_cmds; |
| 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; |
| }; |
| |
| struct se_dev_attrib { |
| int emulate_model_alias; |
| 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_caw; |
| int emulate_3pc; |
| int enforce_pr_isids; |
| int is_nonrot; |
| int emulate_rest_reord; |
| u32 hw_block_size; |
| u32 block_size; |
| u32 hw_max_sectors; |
| u32 fabric_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; |
| u32 max_write_same_len; |
| struct se_device *da_dev; |
| struct config_group da_group; |
| }; |
| |
| 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_device { |
| #define SE_DEV_LINK_MAGIC 0xfeeddeef |
| u32 dev_link_magic; |
| /* RELATIVE TARGET PORT IDENTIFER Counter */ |
| u16 dev_rpti_counter; |
| /* Used for SAM Task Attribute ordering */ |
| u32 dev_cur_ordered_id; |
| u32 dev_flags; |
| #define DF_CONFIGURED 0x00000001 |
| #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 |
| #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 |
| #define DF_USING_UDEV_PATH 0x00000008 |
| #define DF_USING_ALIAS 0x00000010 |
| u32 dev_port_count; |
| /* Physical device queue depth */ |
| u32 queue_depth; |
| /* Used for SPC-2 reservations enforce of ISIDs */ |
| u64 dev_res_bin_isid; |
| /* Pointer to transport specific device structure */ |
| 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 dev_ordered_id; |
| atomic_t dev_ordered_sync; |
| atomic_t dev_qf_count; |
| int export_count; |
| spinlock_t delayed_cmd_lock; |
| spinlock_t execute_task_lock; |
| spinlock_t dev_reservation_lock; |
| unsigned int dev_reservation_flags; |
| #define DRF_SPC2_RESERVATIONS 0x00000001 |
| #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 |
| spinlock_t se_port_lock; |
| spinlock_t se_tmr_lock; |
| spinlock_t qf_cmd_lock; |
| struct semaphore caw_sem; |
| /* 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 workqueue_struct *tmr_wq; |
| struct work_struct qf_work_queue; |
| struct list_head delayed_cmd_list; |
| struct list_head state_list; |
| struct list_head qf_cmd_list; |
| struct list_head g_dev_node; |
| /* Pointer to associated SE HBA */ |
| struct se_hba *se_hba; |
| /* T10 Inquiry and VPD WWN Information */ |
| struct t10_wwn t10_wwn; |
| /* T10 Asymmetric Logical Unit Assignment for Target Ports */ |
| struct t10_alua t10_alua; |
| /* T10 SPC-2 + SPC-3 Reservations */ |
| struct t10_reservation t10_pr; |
| struct se_dev_attrib dev_attrib; |
| struct config_group dev_group; |
| struct config_group dev_pr_group; |
| struct se_dev_stat_grps dev_stat_grps; |
| #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ |
| unsigned char dev_alias[SE_DEV_ALIAS_LEN]; |
| #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ |
| unsigned char udev_path[SE_UDEV_PATH_LEN]; |
| /* 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; |
| }; |
| |
| 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; |
| struct list_head hba_node; |
| spinlock_t device_lock; |
| struct config_group hba_group; |
| struct mutex hba_access_mutex; |
| struct se_subsystem_api *transport; |
| }; |
| |
| 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 { |
| #define SE_LUN_LINK_MAGIC 0xffff7771 |
| u32 lun_link_magic; |
| /* 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; |
| struct completion lun_ref_comp; |
| struct percpu_ref lun_ref; |
| }; |
| |
| struct scsi_port_stats { |
| u64 cmd_pdus; |
| u64 tx_data_octets; |
| u64 rx_data_octets; |
| }; |
| |
| 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; |
| }; |
| |
| struct se_tpg_np { |
| struct se_portal_group *tpg_np_parent; |
| struct config_group tpg_np_group; |
| }; |
| |
| 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[7]; |
| 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_auth_group; |
| struct config_group tpg_param_group; |
| }; |
| |
| 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; |
| }; |
| |
| #endif /* TARGET_CORE_BASE_H */ |