diff options
Diffstat (limited to 'include/target/target_core_base.h')
| -rw-r--r-- | include/target/target_core_base.h | 153 |
1 files changed, 98 insertions, 55 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 1728e883b7b2..8c920456edd9 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -74,8 +74,6 @@ #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() */ @@ -129,25 +127,25 @@ enum transport_state_table { /* 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_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, - SCF_TREAT_READ_AS_NORMAL = 0x02000000, + SCF_SUPPORTED_SAM_OPCODE = (1 << 0), + SCF_TRANSPORT_TASK_SENSE = (1 << 1), + SCF_EMULATED_TASK_SENSE = (1 << 2), + SCF_SCSI_DATA_CDB = (1 << 3), + SCF_SCSI_TMR_CDB = (1 << 4), + SCF_FUA = (1 << 5), + SCF_SE_LUN_CMD = (1 << 6), + SCF_BIDI = (1 << 7), + SCF_SENT_CHECK_CONDITION = (1 << 8), + SCF_OVERFLOW_BIT = (1 << 9), + SCF_UNDERFLOW_BIT = (1 << 10), + SCF_ALUA_NON_OPTIMIZED = (1 << 11), + SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = (1 << 12), + SCF_COMPARE_AND_WRITE = (1 << 13), + SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = (1 << 14), + SCF_ACK_KREF = (1 << 15), + SCF_USE_CPUID = (1 << 16), + SCF_TASK_ATTR_SET = (1 << 17), + SCF_TREAT_READ_AS_NORMAL = (1 << 18), }; /* @@ -173,7 +171,7 @@ enum tcm_sense_reason_table { 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), @@ -189,6 +187,11 @@ enum tcm_sense_reason_table { TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE = R(0x1c), TCM_INSUFFICIENT_REGISTRATION_RESOURCES = R(0x1d), TCM_LUN_BUSY = R(0x1e), + TCM_INVALID_FIELD_IN_COMMAND_IU = R(0x1f), + TCM_ALUA_TG_PT_STANDBY = R(0x20), + TCM_ALUA_TG_PT_UNAVAILABLE = R(0x21), + TCM_ALUA_STATE_TRANSITION = R(0x22), + TCM_ALUA_OFFLINE = R(0x23), #undef R }; @@ -197,7 +200,6 @@ enum target_sc_flags_table { 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 */ @@ -209,6 +211,7 @@ enum tcm_tmreq_table { TMR_LUN_RESET = 5, TMR_TARGET_WARM_RESET = 6, TMR_TARGET_COLD_RESET = 7, + TMR_LUN_RESET_PRO = 0x80, TMR_UNKNOWN = 0xff, }; @@ -327,6 +330,7 @@ struct t10_wwn { char model[INQUIRY_MODEL_LEN + 1]; char revision[INQUIRY_REVISION_LEN + 1]; char unit_serial[INQUIRY_VPD_SERIAL_LEN]; + u32 company_id; spinlock_t t10_vpd_lock; struct se_device *t10_dev; struct config_group t10_wwn_group; @@ -433,6 +437,13 @@ enum target_prot_type { TARGET_DIF_TYPE3_PROT, }; +/* Emulation for UNIT ATTENTION Interlock Control */ +enum target_ua_intlck_ctrl { + TARGET_UA_INTLCK_CTRL_CLEAR = 0, + TARGET_UA_INTLCK_CTRL_NO_CLEAR = 1, + TARGET_UA_INTLCK_CTRL_ESTABLISH_UA = 2, +}; + enum target_core_dif_check { TARGET_DIF_CHECK_GUARD = 0x1 << 0, TARGET_DIF_CHECK_APPTAG = 0x1 << 1, @@ -446,10 +457,10 @@ enum target_core_dif_check { #define TCM_ACA_TAG 0x24 struct se_cmd { + /* Used for fail with specific sense codes */ + sense_reason_t sense_reason; /* SAM response code being sent to initiator */ u8 scsi_status; - u8 scsi_asc; - u8 scsi_ascq; u16 scsi_sense_length; unsigned unknown_data_length:1; bool state_active:1; @@ -482,7 +493,7 @@ struct se_cmd { /* 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 llist_node se_cmd_list; struct completion *free_compl; struct completion *abrt_compl; const struct target_core_fabric_ops *se_tfo; @@ -534,7 +545,11 @@ struct se_cmd { struct scatterlist *t_prot_sg; unsigned int t_prot_nents; sense_reason_t pi_err; - sector_t bad_sector; + u64 sense_info; + /* + * CPU LIO will execute the cmd on. Defaults to the CPU the cmd is + * initialized on. Drivers can override. + */ int cpuid; }; @@ -603,7 +618,7 @@ static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) } struct se_session { - unsigned sess_tearing_down:1; + atomic_t stopped; u64 sess_bin_isid; enum target_prot_op sup_prot_ops; enum target_prot_type sess_prot_type; @@ -613,9 +628,9 @@ struct se_session { struct percpu_ref cmd_count; struct list_head sess_list; struct list_head sess_acl_list; - struct list_head sess_cmd_list; spinlock_t sess_cmd_lock; - wait_queue_head_t cmd_list_wq; + wait_queue_head_t cmd_count_wq; + struct completion stop_done; void *sess_cmd_map; struct sbitmap_queue sess_tag_pool; }; @@ -650,9 +665,9 @@ struct se_dev_entry { /* 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; + struct se_lun_acl *se_lun_acl; spinlock_t ua_lock; - struct se_lun __rcu *se_lun; + struct se_lun *se_lun; #define DEF_PR_REG_ACTIVE 1 unsigned long deve_flags; struct list_head alua_port_list; @@ -663,26 +678,26 @@ struct se_dev_entry { }; 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; + bool emulate_model_alias; + bool emulate_dpo; /* deprecated */ + bool emulate_fua_write; + bool emulate_fua_read; /* deprecated */ + bool emulate_write_cache; + enum target_ua_intlck_ctrl emulate_ua_intlck_ctrl; + bool emulate_tas; + bool emulate_tpu; + bool emulate_tpws; + bool emulate_caw; + bool emulate_3pc; + bool 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; + bool pi_prot_verify; + bool enforce_pr_isids; + bool force_pr_aptpl; + bool is_nonrot; + bool emulate_rest_reord; + bool unmap_zeroes_data; u32 hw_block_size; u32 block_size; u32 hw_max_sectors; @@ -734,7 +749,7 @@ struct se_lun { /* ALUA target port group linkage */ struct list_head lun_tg_pt_gp_link; - struct t10_alua_tg_pt_gp *lun_tg_pt_gp; + struct t10_alua_tg_pt_gp __rcu *lun_tg_pt_gp; spinlock_t lun_tg_pt_gp_lock; struct se_portal_group *lun_tpg; @@ -755,6 +770,21 @@ struct se_dev_stat_grps { struct config_group scsi_lu_group; }; +struct se_cmd_queue { + struct llist_head cmd_list; + struct work_struct work; +}; + +struct se_dev_plug { + struct se_device *se_dev; +}; + +struct se_device_queue { + struct list_head state_list; + spinlock_t lock; + struct se_cmd_queue sq; +}; + struct se_device { /* RELATIVE TARGET PORT IDENTIFER Counter */ u16 dev_rpti_counter; @@ -767,6 +797,7 @@ struct se_device { #define DF_USING_UDEV_PATH 0x00000008 #define DF_USING_ALIAS 0x00000010 #define DF_READ_ONLY 0x00000020 + u8 transport_flags; /* Physical device queue depth */ u32 queue_depth; /* Used for SPC-2 reservations enforce of ISIDs */ @@ -781,12 +812,12 @@ struct se_device { 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 non_ordered; + bool ordered_sync_in_progress; + atomic_t delayed_cmd_count; 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 @@ -804,8 +835,8 @@ struct se_device { struct list_head dev_sep_list; struct list_head dev_tmr_list; struct work_struct qf_work_queue; + struct work_struct delayed_cmd_work; 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; @@ -832,6 +863,8 @@ struct se_device { /* For se_lun->lun_se_dev RCU read-side critical access */ u32 hba_index; struct rcu_head rcu_head; + int queue_cnt; + struct se_device_queue *queues; }; struct se_hba { @@ -869,6 +902,7 @@ struct se_portal_group { * Negative values can be used by fabric drivers for internal use TPGs. */ int proto_id; + bool enabled; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ atomic_t tpg_pr_ref_count; /* Spinlock for adding/removing ACLed Nodes */ @@ -918,11 +952,20 @@ static inline struct se_portal_group *param_to_tpg(struct config_item *item) tpg_param_group); } +enum { + /* Use se_cmd's cpuid for completion */ + SE_COMPL_AFFINITY_CPUID = -1, + /* Complete on current CPU */ + SE_COMPL_AFFINITY_CURR_CPU = -2, +}; + struct se_wwn { struct target_fabric_configfs *wwn_tf; void *priv; struct config_group wwn_group; struct config_group fabric_stat_group; + struct config_group param_group; + int cmd_compl_affinity; }; static inline void atomic_inc_mb(atomic_t *v) |