diff options
Diffstat (limited to 'include/target/target_core_base.h')
-rw-r--r-- | include/target/target_core_base.h | 213 |
1 files changed, 61 insertions, 152 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 5be89373ceac..663e34a5383f 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -62,20 +62,6 @@ #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ -/* - * struct se_subsystem_dev->su_dev_flags -*/ -#define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001 -#define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002 -#define SDF_USING_UDEV_PATH 0x00000004 -#define SDF_USING_ALIAS 0x00000008 - -/* - * struct se_device->dev_flags - */ -#define DF_SPC2_RESERVATIONS 0x00000001 -#define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 - /* struct se_dev_attrib sanity values */ /* Default max_unmap_lba_count */ #define DA_MAX_UNMAP_LBA_COUNT 0 @@ -85,6 +71,8 @@ #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 /* Emulation for Direct Page Out */ @@ -107,8 +95,6 @@ */ #define DA_EMULATE_TPWS 0 /* No Emulation for PSCSI by default */ -#define DA_EMULATE_RESERVATIONS 0 -/* 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 @@ -160,8 +146,6 @@ enum se_cmd_flags_table { SCF_EMULATED_TASK_SENSE = 0x00000004, SCF_SCSI_DATA_CDB = 0x00000008, SCF_SCSI_TMR_CDB = 0x00000010, - SCF_SCSI_CDB_EXCEPTION = 0x00000020, - SCF_SCSI_RESERVATION_CONFLICT = 0x00000040, SCF_FUA = 0x00000080, SCF_SE_LUN_CMD = 0x00000100, SCF_BIDI = 0x00000400, @@ -182,38 +166,34 @@ enum transport_lunflags_table { 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 + * 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 { - 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, - TCM_ADDRESS_OUT_OF_RANGE = 0x11, +#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), +#undef R }; enum target_sc_flags_table { @@ -246,30 +226,6 @@ enum tcm_tmrsp_table { TMR_FUNCTION_REJECTED = 255, }; -struct se_obj { - atomic_t obj_access_count; -}; - -/* - * 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 */ @@ -283,17 +239,15 @@ typedef enum { 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; + 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; - int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *); struct list_head tg_pt_gps_list; }; @@ -335,7 +289,7 @@ struct t10_alua_tg_pt_gp { 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 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; @@ -366,23 +320,11 @@ struct t10_wwn { char revision[4]; char unit_serial[INQUIRY_VPD_SERIAL_LEN]; spinlock_t t10_vpd_lock; - struct se_subsystem_dev *t10_sub_dev; + struct se_device *t10_dev; struct config_group t10_wwn_group; struct list_head t10_vpd_list; }; - -/* - * 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 @@ -424,18 +366,6 @@ struct t10_pr_registration { struct list_head pr_reg_atp_mem_list; }; -/* - * 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; @@ -446,7 +376,6 @@ struct t10_reservation { #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; /* @@ -462,7 +391,6 @@ struct t10_reservation { struct se_node_acl *pr_res_holder; struct list_head registration_list; struct list_head aptpl_reg_list; - struct t10_reservation_ops pr_ops; }; struct se_tmr_req { @@ -485,7 +413,6 @@ struct se_cmd { 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; @@ -523,7 +450,7 @@ struct se_cmd { struct completion cmd_wait_comp; struct kref cmd_kref; struct target_core_fabric_ops *se_tfo; - int (*execute_cmd)(struct se_cmd *); + sense_reason_t (*execute_cmd)(struct se_cmd *); void (*transport_complete_callback)(struct se_cmd *); unsigned char *t_task_cdb; @@ -581,6 +508,8 @@ struct se_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; @@ -662,15 +591,6 @@ struct se_dev_entry { struct list_head ua_list; }; -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; -}; - struct se_dev_attrib { int emulate_dpo; int emulate_fua_write; @@ -680,8 +600,6 @@ struct se_dev_attrib { 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; @@ -696,7 +614,8 @@ struct se_dev_attrib { u32 max_unmap_block_desc_count; u32 unmap_granularity; u32 unmap_granularity_alignment; - struct se_subsystem_dev *da_sub_dev; + u32 max_write_same_len; + struct se_device *da_dev; struct config_group da_group; }; @@ -707,48 +626,25 @@ struct se_dev_stat_grps { 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; -}; - 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; - /* See transport_device_status_table */ - u32 dev_status; /* 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; @@ -761,13 +657,13 @@ struct se_device { atomic_t dev_ordered_id; 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; + int export_count; spinlock_t delayed_cmd_lock; spinlock_t execute_task_lock; spinlock_t dev_reservation_lock; - spinlock_t dev_status_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; @@ -786,7 +682,20 @@ struct se_device { struct list_head qf_cmd_list; /* Pointer to associated SE HBA */ struct se_hba *se_hba; - struct se_subsystem_dev *se_sub_dev; + /* 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 */ @@ -803,8 +712,6 @@ struct se_hba { 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; @@ -820,6 +727,8 @@ struct se_port_stat_grps { }; 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; |