Edit File: target_core_base.h
#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_VERSION "v5.0" /* * Maximum size of a CDB that can be stored in se_cmd without allocating * memory dynamically for the CDB. */ #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_DESC_TYPE_OFFSET 8 #define SPC_ADDITIONAL_DESC_LEN_OFFSET 9 #define SPC_VALIDITY_OFFSET 10 #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 unmap_zeroes_data */ #define DA_UNMAP_ZEROES_DATA_DEFAULT 0 /* Default max_write_same_len, disabled by default */ #define DA_MAX_WRITE_SAME_LEN 0 /* Use a model alias based on the configfs backend device name */ #define DA_EMULATE_MODEL_ALIAS 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 /* Emulate SCSI2 RESERVE/RELEASE and Persistent Reservations by default */ #define DA_EMULATE_PR 1 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ #define DA_ENFORCE_PR_ISIDS 1 /* Force SPC-3 PR Activate Persistence across Target Power Loss */ #define DA_FORCE_PR_APTPL 0 #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 1024 #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, }; /* 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, TRANSPORT_COMPLETE_QF_ERR = 20, }; /* 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_SEND_DELAYED_TAS = 0x00004000, SCF_ALUA_NON_OPTIMIZED = 0x00008000, SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, SCF_COMPARE_AND_WRITE = 0x00080000, SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000, SCF_ACK_KREF = 0x00400000, SCF_USE_CPUID = 0x00800000, SCF_TASK_ATTR_SET = 0x01000000, }; /* * 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), TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), TCM_COPY_TARGET_DEVICE_NOT_REACHABLE = R(0x18), TCM_TOO_MANY_TARGET_DESCS = R(0x19), TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE = R(0x1a), TCM_TOO_MANY_SEGMENT_DESCS = R(0x1b), TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE = R(0x1c), TCM_INSUFFICIENT_REGISTRATION_RESOURCES = R(0x1d), TCM_LUN_BUSY = R(0x1e), #undef R }; enum target_sc_flags_table { TARGET_SCF_BIDI_OP = 0x01, TARGET_SCF_ACK_KREF = 0x02, TARGET_SCF_UNKNOWN_SIZE = 0x04, TARGET_SCF_USE_CPUID = 0x08, TARGET_SCF_LOOKUP_LUN_FROM_TAG = 0x10, }; /* 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, TMR_UNKNOWN = 0xff, }; /* 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_AUTH_INTR_INDEX, SCSI_INDEX_TYPE_MAX } scsi_index_t; struct se_cmd; struct t10_alua_lba_map_member { struct list_head lba_map_mem_list; int lba_map_mem_alua_state; int lba_map_mem_alua_pg_id; }; struct t10_alua_lba_map { u64 lba_map_first_lba; u64 lba_map_last_lba; struct list_head lba_map_list; struct list_head lba_map_mem_list; }; struct t10_alua { /* ALUA Target Port Group ID */ u16 alua_tg_pt_gps_counter; u32 alua_tg_pt_gps_count; /* Referrals support */ spinlock_t lba_map_lock; u32 lba_map_segment_size; u32 lba_map_segment_multiplier; struct list_head lba_map_list; 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_supported_states; 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_implicit_trans_secs; int tg_pt_gp_pref; int tg_pt_gp_write_metadata; u32 tg_pt_gp_members; int tg_pt_gp_alua_access_state; atomic_t tg_pt_gp_ref_cnt; spinlock_t tg_pt_gp_lock; struct mutex tg_pt_gp_transition_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_lun_list; struct se_lun *tg_pt_gp_alua_lun; struct se_node_acl *tg_pt_gp_alua_nacl; }; 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; u64 pr_res_mapped_lun; u64 pr_aptpl_target_lun; u16 tg_pt_sep_rtpi; 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; /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */ struct se_dev_entry *pr_reg_deve; 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 262144 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 */ u64 ref_task_tag; void *fabric_tmr_ptr; struct se_cmd *task_cmd; struct se_device *tmr_dev; struct list_head tmr_list; }; enum target_prot_op { TARGET_PROT_NORMAL = 0, TARGET_PROT_DIN_INSERT = (1 << 0), TARGET_PROT_DOUT_INSERT = (1 << 1), TARGET_PROT_DIN_STRIP = (1 << 2), TARGET_PROT_DOUT_STRIP = (1 << 3), TARGET_PROT_DIN_PASS = (1 << 4), TARGET_PROT_DOUT_PASS = (1 << 5), }; #define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS enum target_prot_type { TARGET_DIF_TYPE0_PROT, TARGET_DIF_TYPE1_PROT, TARGET_DIF_TYPE2_PROT, TARGET_DIF_TYPE3_PROT, }; enum target_core_dif_check { TARGET_DIF_CHECK_GUARD = 0x1 << 0, TARGET_DIF_CHECK_APPTAG = 0x1 << 1, TARGET_DIF_CHECK_REFTAG = 0x1 << 2, }; struct se_dif_v1_tuple { __be16 guard_tag; __be16 app_tag; __be32 ref_tag; }; /* for sam_task_attr */ #define TCM_SIMPLE_TAG 0x20 #define TCM_HEAD_TAG 0x21 #define TCM_ORDERED_TAG 0x22 #define TCM_ACA_TAG 0x24 struct se_cmd { /* SAM response code being sent to initiator */ u8 scsi_status; u8 scsi_asc; u8 scsi_ascq; u16 scsi_sense_length; unsigned cmd_wait_set:1; unsigned unknown_data_length:1; bool state_active:1; u64 tag; /* SAM command identifier aka task tag */ /* 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; /* See se_cmd_flags_table */ u32 se_cmd_flags; /* Total size in bytes associated with command */ u32 data_length; u32 residual_count; u64 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_qf_node; struct se_device *se_dev; 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; const struct target_core_fabric_ops *se_tfo; sense_reason_t (*execute_cmd)(struct se_cmd *); sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool, int *); void *protocol_data; 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_TAS (1 << 10) #define CMD_T_FABRIC_STOP (1 << 11) #define CMD_T_PRE_EXECUTE (1 << 12) spinlock_t t_state_lock; struct kref cmd_kref; struct completion t_transport_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; /* Used for lun->lun_ref counting */ int lun_ref_active; struct list_head state_list; /* backend private data */ void *priv; /* DIF related members */ enum target_prot_op prot_op; enum target_prot_type prot_type; u8 prot_checks; bool prot_pto; u32 prot_length; u32 reftag_seed; struct scatterlist *t_prot_sg; unsigned int t_prot_nents; sense_reason_t pi_err; sector_t bad_sector; int cpuid; }; struct se_ua { u8 ua_asc; u8 ua_ascq; 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 dynamic_stop; u32 queue_depth; u32 acl_index; enum target_prot_type saved_prot_type; #define MAX_ACL_TAG_SIZE 64 char acl_tag[MAX_ACL_TAG_SIZE]; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ atomic_t acl_pr_ref_count; struct hlist_head lun_entry_hlist; struct se_session *nacl_sess; struct se_portal_group *se_tpg; struct mutex lun_entry_mutex; 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 list_head acl_list; struct list_head acl_sess_list; struct completion acl_free_comp; struct kref acl_kref; }; static inline struct se_node_acl *acl_to_nacl(struct config_item *item) { return container_of(to_config_group(item), struct se_node_acl, acl_group); } static inline struct se_node_acl *attrib_to_nacl(struct config_item *item) { return container_of(to_config_group(item), struct se_node_acl, acl_attrib_group); } static inline struct se_node_acl *auth_to_nacl(struct config_item *item) { return container_of(to_config_group(item), struct se_node_acl, acl_auth_group); } static inline struct se_node_acl *param_to_nacl(struct config_item *item) { return container_of(to_config_group(item), struct se_node_acl, acl_param_group); } static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) { return container_of(to_config_group(item), struct se_node_acl, acl_fabric_stat_group); } struct se_session { unsigned sess_tearing_down:1; u64 sess_bin_isid; enum target_prot_op sup_prot_ops; enum target_prot_type sess_prot_type; 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 { u64 mapped_lun; struct se_node_acl *se_lun_nacl; struct se_lun *se_lun; struct config_group se_lun_group; struct se_ml_stat_grps ml_stat_grps; }; struct se_dev_entry { u64 mapped_lun; u64 pr_res_key; u64 creation_time; bool lun_access_ro; u32 attach_count; atomic_long_t total_cmds; atomic_long_t read_bytes; atomic_long_t write_bytes; atomic_t ua_count; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ struct kref pr_kref; struct completion pr_comp; struct se_lun_acl __rcu *se_lun_acl; spinlock_t ua_lock; struct se_lun __rcu *se_lun; #define DEF_PR_REG_ACTIVE 1 unsigned long deve_flags; struct list_head alua_port_list; struct list_head lun_link; struct list_head ua_list; struct hlist_node link; struct rcu_head rcu_head; }; 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 emulate_pr; enum target_prot_type pi_prot_type; enum target_prot_type hw_pi_prot_type; int pi_prot_verify; int enforce_pr_isids; int force_pr_aptpl; int is_nonrot; int emulate_rest_reord; int unmap_zeroes_data; u32 hw_block_size; u32 block_size; u32 hw_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; u32 max_bytes_per_io; struct se_device *da_dev; struct config_group da_group; }; 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 scsi_port_stats { atomic_long_t cmd_pdus; atomic_long_t tx_data_octets; atomic_long_t rx_data_octets; }; struct se_lun { u64 unpacked_lun; bool lun_shutdown; bool lun_access_ro; u32 lun_index; /* RELATIVE TARGET PORT IDENTIFER */ u16 lun_rtpi; atomic_t lun_acl_count; struct se_device __rcu *lun_se_dev; struct list_head lun_deve_list; spinlock_t lun_deve_lock; /* ALUA state */ int lun_tg_pt_secondary_stat; int lun_tg_pt_secondary_write_md; atomic_t lun_tg_pt_secondary_offline; struct mutex lun_tg_pt_md_mutex; /* ALUA target port group linkage */ struct list_head lun_tg_pt_gp_link; struct t10_alua_tg_pt_gp *lun_tg_pt_gp; spinlock_t lun_tg_pt_gp_lock; struct se_portal_group *lun_tpg; struct scsi_port_stats lun_stats; struct config_group lun_group; struct se_port_stat_grps port_stat_grps; struct completion lun_ref_comp; struct completion lun_shutdown_comp; struct percpu_ref lun_ref; struct list_head lun_dev_link; struct hlist_node link; struct rcu_head rcu_head; }; 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 { /* 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 #define DF_READ_ONLY 0x00000020 /* 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; atomic_long_t num_resets; atomic_long_t aborts_complete; atomic_long_t aborts_no_task; atomic_long_t num_cmds; atomic_long_t read_bytes; atomic_long_t write_bytes; /* Active commands on this virtual SE device */ atomic_t simple_cmds; atomic_t dev_ordered_sync; atomic_t dev_qf_count; u32 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; /* 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_action_group; 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 */ const struct target_backend_ops *transport; struct se_lun xcopy_lun; /* Protection Information */ int prot_length; /* For se_lun->lun_se_dev RCU read-side critical access */ u32 hba_index; struct rcu_head rcu_head; }; 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 target_backend *backend; }; struct se_tpg_np { struct se_portal_group *tpg_np_parent; struct config_group tpg_np_group; }; static inline struct se_tpg_np *to_tpg_np(struct config_item *item) { return container_of(to_config_group(item), struct se_tpg_np, tpg_np_group); } struct se_portal_group { /* * PROTOCOL IDENTIFIER value per SPC4, 7.5.1. * * Negative values can be used by fabric drivers for internal use TPGs. */ int proto_id; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ atomic_t tpg_pr_ref_count; /* Spinlock for adding/removing ACLed Nodes */ struct mutex acl_node_mutex; /* Spinlock for adding/removing sessions */ spinlock_t session_lock; struct mutex tpg_lun_mutex; struct list_head se_tpg_node; /* linked list for initiator ACL list */ struct list_head acl_node_list; struct hlist_head tpg_lun_hlist; 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 */ const struct target_core_fabric_ops *se_tpg_tfo; struct se_wwn *se_tpg_wwn; struct config_group tpg_group; 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; }; static inline struct se_portal_group *to_tpg(struct config_item *item) { return container_of(to_config_group(item), struct se_portal_group, tpg_group); } static inline struct se_portal_group *attrib_to_tpg(struct config_item *item) { return container_of(to_config_group(item), struct se_portal_group, tpg_attrib_group); } static inline struct se_portal_group *auth_to_tpg(struct config_item *item) { return container_of(to_config_group(item), struct se_portal_group, tpg_auth_group); } static inline struct se_portal_group *param_to_tpg(struct config_item *item) { return container_of(to_config_group(item), struct se_portal_group, tpg_param_group); } struct se_wwn { struct target_fabric_configfs *wwn_tf; void *priv; struct config_group wwn_group; struct config_group fabric_stat_group; }; static inline void atomic_inc_mb(atomic_t *v) { smp_mb__before_atomic(); atomic_inc(v); smp_mb__after_atomic(); } static inline void atomic_dec_mb(atomic_t *v) { smp_mb__before_atomic(); atomic_dec(v); smp_mb__after_atomic(); } #endif /* TARGET_CORE_BASE_H */