896 lines
26 KiB
C
896 lines
26 KiB
C
#ifndef TARGET_CORE_BASE_H
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#define TARGET_CORE_BASE_H
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#include <linux/in.h>
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#include <linux/configfs.h>
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#include <linux/dma-mapping.h>
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#include <linux/blkdev.h>
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#include <scsi/scsi_cmnd.h>
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#include <net/sock.h>
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#include <net/tcp.h>
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#define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml"
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/* Maximum Number of LUNs per Target Portal Group */
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/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
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#define TRANSPORT_MAX_LUNS_PER_TPG 256
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/*
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* By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
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*
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* Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
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* include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
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* 16-byte CDBs by default and require an extra allocation for
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* 32-byte CDBs to because of legacy issues.
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*
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* Within TCM Core there are no such legacy limitiations, so we go ahead
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* use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
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* within all TCM Core and subsystem plugin code.
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*/
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#define TCM_MAX_COMMAND_SIZE 32
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/*
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* From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
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* defined 96, but the real limit is 252 (or 260 including the header)
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*/
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#define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
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/* Used by transport_send_check_condition_and_sense() */
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#define SPC_SENSE_KEY_OFFSET 2
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#define SPC_ASC_KEY_OFFSET 12
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#define SPC_ASCQ_KEY_OFFSET 13
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#define TRANSPORT_IQN_LEN 224
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/* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
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#define LU_GROUP_NAME_BUF 256
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/* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
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#define TG_PT_GROUP_NAME_BUF 256
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/* Used to parse VPD into struct t10_vpd */
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#define VPD_TMP_BUF_SIZE 128
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/* Used by transport_generic_cmd_sequencer() */
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#define READ_BLOCK_LEN 6
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#define READ_CAP_LEN 8
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#define READ_POSITION_LEN 20
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#define INQUIRY_LEN 36
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/* Used by transport_get_inquiry_vpd_serial() */
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#define INQUIRY_VPD_SERIAL_LEN 254
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/* Used by transport_get_inquiry_vpd_device_ident() */
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#define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
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/* struct se_hba->hba_flags */
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enum hba_flags_table {
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HBA_FLAGS_INTERNAL_USE = 0x01,
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HBA_FLAGS_PSCSI_MODE = 0x02,
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};
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/* struct se_lun->lun_status */
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enum transport_lun_status_table {
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TRANSPORT_LUN_STATUS_FREE = 0,
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TRANSPORT_LUN_STATUS_ACTIVE = 1,
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};
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/* struct se_portal_group->se_tpg_type */
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enum transport_tpg_type_table {
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TRANSPORT_TPG_TYPE_NORMAL = 0,
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TRANSPORT_TPG_TYPE_DISCOVERY = 1,
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};
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/* Used for generate timer flags */
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enum se_task_flags {
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TF_ACTIVE = (1 << 0),
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TF_SENT = (1 << 1),
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TF_REQUEST_STOP = (1 << 2),
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};
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/* Special transport agnostic struct se_cmd->t_states */
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enum transport_state_table {
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TRANSPORT_NO_STATE = 0,
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TRANSPORT_NEW_CMD = 1,
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TRANSPORT_WRITE_PENDING = 3,
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TRANSPORT_PROCESS_WRITE = 4,
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TRANSPORT_PROCESSING = 5,
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TRANSPORT_COMPLETE = 6,
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TRANSPORT_PROCESS_TMR = 9,
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TRANSPORT_ISTATE_PROCESSING = 11,
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TRANSPORT_NEW_CMD_MAP = 16,
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TRANSPORT_COMPLETE_QF_WP = 18,
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TRANSPORT_COMPLETE_QF_OK = 19,
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};
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/* Used for struct se_cmd->se_cmd_flags */
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enum se_cmd_flags_table {
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SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
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SCF_TRANSPORT_TASK_SENSE = 0x00000002,
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SCF_EMULATED_TASK_SENSE = 0x00000004,
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SCF_SCSI_DATA_SG_IO_CDB = 0x00000008,
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SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010,
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SCF_SCSI_NON_DATA_CDB = 0x00000040,
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SCF_SCSI_CDB_EXCEPTION = 0x00000080,
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SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
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SCF_SE_CMD_FAILED = 0x00000400,
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SCF_SE_LUN_CMD = 0x00000800,
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SCF_SE_ALLOW_EOO = 0x00001000,
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SCF_SENT_CHECK_CONDITION = 0x00004000,
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SCF_OVERFLOW_BIT = 0x00008000,
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SCF_UNDERFLOW_BIT = 0x00010000,
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SCF_SENT_DELAYED_TAS = 0x00020000,
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SCF_ALUA_NON_OPTIMIZED = 0x00040000,
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SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
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SCF_UNUSED = 0x00100000,
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SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
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};
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/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
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enum transport_lunflags_table {
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TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
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TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
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TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
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TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
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};
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/* struct se_device->dev_status */
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enum transport_device_status_table {
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TRANSPORT_DEVICE_ACTIVATED = 0x01,
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TRANSPORT_DEVICE_DEACTIVATED = 0x02,
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TRANSPORT_DEVICE_QUEUE_FULL = 0x04,
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TRANSPORT_DEVICE_SHUTDOWN = 0x08,
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TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10,
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TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20,
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};
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/*
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* Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
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* to signal which ASC/ASCQ sense payload should be built.
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*/
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enum tcm_sense_reason_table {
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TCM_NON_EXISTENT_LUN = 0x01,
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TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
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TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
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TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
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TCM_SERVICE_CRC_ERROR = 0x05,
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TCM_SNACK_REJECTED = 0x06,
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TCM_SECTOR_COUNT_TOO_MANY = 0x07,
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TCM_INVALID_CDB_FIELD = 0x08,
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TCM_INVALID_PARAMETER_LIST = 0x09,
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TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
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TCM_UNKNOWN_MODE_PAGE = 0x0b,
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TCM_WRITE_PROTECTED = 0x0c,
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TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
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TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
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TCM_CHECK_CONDITION_NOT_READY = 0x0f,
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};
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struct se_obj {
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atomic_t obj_access_count;
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} ____cacheline_aligned;
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/*
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* Used by TCM Core internally to signal if ALUA emulation is enabled or
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* disabled, or running in with TCM/pSCSI passthrough mode
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*/
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typedef enum {
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SPC_ALUA_PASSTHROUGH,
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SPC2_ALUA_DISABLED,
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SPC3_ALUA_EMULATED
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} t10_alua_index_t;
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/*
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* Used by TCM Core internally to signal if SAM Task Attribute emulation
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* is enabled or disabled, or running in with TCM/pSCSI passthrough mode
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*/
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typedef enum {
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SAM_TASK_ATTR_PASSTHROUGH,
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SAM_TASK_ATTR_UNTAGGED,
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SAM_TASK_ATTR_EMULATED
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} t10_task_attr_index_t;
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/*
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* Used for target SCSI statistics
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*/
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typedef enum {
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SCSI_INST_INDEX,
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SCSI_DEVICE_INDEX,
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SCSI_AUTH_INTR_INDEX,
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SCSI_INDEX_TYPE_MAX
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} scsi_index_t;
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struct se_cmd;
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struct t10_alua {
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t10_alua_index_t alua_type;
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/* ALUA Target Port Group ID */
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u16 alua_tg_pt_gps_counter;
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u32 alua_tg_pt_gps_count;
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spinlock_t tg_pt_gps_lock;
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struct se_subsystem_dev *t10_sub_dev;
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/* Used for default ALUA Target Port Group */
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struct t10_alua_tg_pt_gp *default_tg_pt_gp;
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/* Used for default ALUA Target Port Group ConfigFS group */
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struct config_group alua_tg_pt_gps_group;
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int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *);
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struct list_head tg_pt_gps_list;
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} ____cacheline_aligned;
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struct t10_alua_lu_gp {
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u16 lu_gp_id;
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int lu_gp_valid_id;
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u32 lu_gp_members;
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atomic_t lu_gp_shutdown;
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atomic_t lu_gp_ref_cnt;
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spinlock_t lu_gp_lock;
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struct config_group lu_gp_group;
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struct list_head lu_gp_node;
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struct list_head lu_gp_mem_list;
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} ____cacheline_aligned;
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struct t10_alua_lu_gp_member {
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bool lu_gp_assoc;
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atomic_t lu_gp_mem_ref_cnt;
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spinlock_t lu_gp_mem_lock;
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struct t10_alua_lu_gp *lu_gp;
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struct se_device *lu_gp_mem_dev;
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struct list_head lu_gp_mem_list;
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} ____cacheline_aligned;
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struct t10_alua_tg_pt_gp {
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u16 tg_pt_gp_id;
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int tg_pt_gp_valid_id;
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int tg_pt_gp_alua_access_status;
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int tg_pt_gp_alua_access_type;
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int tg_pt_gp_nonop_delay_msecs;
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int tg_pt_gp_trans_delay_msecs;
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int tg_pt_gp_pref;
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int tg_pt_gp_write_metadata;
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/* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
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#define ALUA_MD_BUF_LEN 1024
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u32 tg_pt_gp_md_buf_len;
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u32 tg_pt_gp_members;
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atomic_t tg_pt_gp_alua_access_state;
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atomic_t tg_pt_gp_ref_cnt;
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spinlock_t tg_pt_gp_lock;
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struct mutex tg_pt_gp_md_mutex;
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struct se_subsystem_dev *tg_pt_gp_su_dev;
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struct config_group tg_pt_gp_group;
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struct list_head tg_pt_gp_list;
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struct list_head tg_pt_gp_mem_list;
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} ____cacheline_aligned;
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struct t10_alua_tg_pt_gp_member {
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bool tg_pt_gp_assoc;
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atomic_t tg_pt_gp_mem_ref_cnt;
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spinlock_t tg_pt_gp_mem_lock;
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struct t10_alua_tg_pt_gp *tg_pt_gp;
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struct se_port *tg_pt;
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struct list_head tg_pt_gp_mem_list;
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} ____cacheline_aligned;
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struct t10_vpd {
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unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
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int protocol_identifier_set;
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u32 protocol_identifier;
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u32 device_identifier_code_set;
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u32 association;
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u32 device_identifier_type;
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struct list_head vpd_list;
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} ____cacheline_aligned;
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struct t10_wwn {
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char vendor[8];
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char model[16];
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char revision[4];
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char unit_serial[INQUIRY_VPD_SERIAL_LEN];
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spinlock_t t10_vpd_lock;
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struct se_subsystem_dev *t10_sub_dev;
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struct config_group t10_wwn_group;
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struct list_head t10_vpd_list;
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} ____cacheline_aligned;
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/*
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* Used by TCM Core internally to signal if >= SPC-3 persistent reservations
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* emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
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* mode
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*/
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typedef enum {
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SPC_PASSTHROUGH,
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SPC2_RESERVATIONS,
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SPC3_PERSISTENT_RESERVATIONS
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} t10_reservations_index_t;
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struct t10_pr_registration {
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/* Used for fabrics that contain WWN+ISID */
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#define PR_REG_ISID_LEN 16
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/* PR_REG_ISID_LEN + ',i,0x' */
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#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
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char pr_reg_isid[PR_REG_ISID_LEN];
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/* Used during APTPL metadata reading */
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#define PR_APTPL_MAX_IPORT_LEN 256
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unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
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/* Used during APTPL metadata reading */
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#define PR_APTPL_MAX_TPORT_LEN 256
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unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
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/* For writing out live meta data */
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unsigned char *pr_aptpl_buf;
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u16 pr_aptpl_rpti;
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u16 pr_reg_tpgt;
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/* Reservation effects all target ports */
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int pr_reg_all_tg_pt;
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/* Activate Persistence across Target Power Loss */
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int pr_reg_aptpl;
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int pr_res_holder;
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int pr_res_type;
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int pr_res_scope;
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/* Used for fabric initiator WWPNs using a ISID */
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bool isid_present_at_reg;
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u32 pr_res_mapped_lun;
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u32 pr_aptpl_target_lun;
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u32 pr_res_generation;
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u64 pr_reg_bin_isid;
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u64 pr_res_key;
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atomic_t pr_res_holders;
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struct se_node_acl *pr_reg_nacl;
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struct se_dev_entry *pr_reg_deve;
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struct se_lun *pr_reg_tg_pt_lun;
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struct list_head pr_reg_list;
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struct list_head pr_reg_abort_list;
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struct list_head pr_reg_aptpl_list;
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struct list_head pr_reg_atp_list;
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struct list_head pr_reg_atp_mem_list;
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} ____cacheline_aligned;
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/*
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* This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
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* SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
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* core_setup_reservations()
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*/
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struct t10_reservation_ops {
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int (*t10_reservation_check)(struct se_cmd *, u32 *);
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int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
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int (*t10_pr_register)(struct se_cmd *);
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int (*t10_pr_clear)(struct se_cmd *);
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};
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struct t10_reservation {
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/* Reservation effects all target ports */
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int pr_all_tg_pt;
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/* Activate Persistence across Target Power Loss enabled
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* for SCSI device */
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int pr_aptpl_active;
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/* Used by struct t10_reservation->pr_aptpl_buf_len */
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#define PR_APTPL_BUF_LEN 8192
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u32 pr_aptpl_buf_len;
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u32 pr_generation;
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t10_reservations_index_t res_type;
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spinlock_t registration_lock;
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spinlock_t aptpl_reg_lock;
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/*
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* This will always be set by one individual I_T Nexus.
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* However with all_tg_pt=1, other I_T Nexus from the
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* same initiator can access PR reg/res info on a different
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* target port.
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*
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* There is also the 'All Registrants' case, where there is
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* a single *pr_res_holder of the reservation, but all
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* registrations are considered reservation holders.
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*/
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struct se_node_acl *pr_res_holder;
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struct list_head registration_list;
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struct list_head aptpl_reg_list;
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struct t10_reservation_ops pr_ops;
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} ____cacheline_aligned;
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struct se_queue_req {
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int state;
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struct se_cmd *cmd;
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struct list_head qr_list;
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} ____cacheline_aligned;
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struct se_queue_obj {
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atomic_t queue_cnt;
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spinlock_t cmd_queue_lock;
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struct list_head qobj_list;
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wait_queue_head_t thread_wq;
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} ____cacheline_aligned;
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struct se_task {
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unsigned long long task_lba;
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u32 task_sectors;
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u32 task_size;
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struct se_cmd *task_se_cmd;
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struct scatterlist *task_sg;
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u32 task_sg_nents;
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u16 task_flags;
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u8 task_sense;
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u8 task_scsi_status;
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int task_error_status;
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enum dma_data_direction task_data_direction;
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atomic_t task_state_active;
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struct list_head t_list;
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struct list_head t_execute_list;
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struct list_head t_state_list;
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struct completion task_stop_comp;
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} ____cacheline_aligned;
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struct se_cmd {
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/* SAM response code being sent to initiator */
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u8 scsi_status;
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u8 scsi_asc;
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u8 scsi_ascq;
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u8 scsi_sense_reason;
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u16 scsi_sense_length;
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/* Delay for ALUA Active/NonOptimized state access in milliseconds */
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int alua_nonop_delay;
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/* See include/linux/dma-mapping.h */
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enum dma_data_direction data_direction;
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/* For SAM Task Attribute */
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int sam_task_attr;
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/* Transport protocol dependent state, see transport_state_table */
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enum transport_state_table t_state;
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/* Transport specific error status */
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int transport_error_status;
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/* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
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int check_release:1;
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int cmd_wait_set:1;
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/* See se_cmd_flags_table */
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u32 se_cmd_flags;
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u32 se_ordered_id;
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/* Total size in bytes associated with command */
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u32 data_length;
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/* SCSI Presented Data Transfer Length */
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u32 cmd_spdtl;
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u32 residual_count;
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u32 orig_fe_lun;
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/* Persistent Reservation key */
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u64 pr_res_key;
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/* Used for sense data */
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void *sense_buffer;
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struct list_head se_delayed_node;
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struct list_head se_ordered_node;
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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_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;
|
|
struct list_head se_queue_node;
|
|
struct list_head se_cmd_list;
|
|
struct completion cmd_wait_comp;
|
|
struct target_core_fabric_ops *se_tfo;
|
|
int (*execute_task)(struct se_task *);
|
|
void (*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;
|
|
int t_tasks_failed;
|
|
int t_tasks_fua;
|
|
bool t_tasks_bidi;
|
|
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_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 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 work_struct work;
|
|
|
|
/*
|
|
* 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;
|
|
u32 t_task_pt_sgl_num;
|
|
|
|
struct scatterlist *t_data_sg;
|
|
unsigned int t_data_nents;
|
|
struct scatterlist *t_bidi_data_sg;
|
|
unsigned int t_bidi_data_nents;
|
|
|
|
/* Used for BIDI READ */
|
|
struct list_head t_task_list;
|
|
u32 t_task_list_num;
|
|
|
|
} ____cacheline_aligned;
|
|
|
|
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 */
|
|
bool dynamic_node_acl;
|
|
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_fabric_stat_group;
|
|
struct config_group *acl_default_groups[5];
|
|
struct list_head acl_list;
|
|
struct list_head acl_sess_list;
|
|
} ____cacheline_aligned;
|
|
|
|
struct se_session {
|
|
int 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;
|
|
} ____cacheline_aligned;
|
|
|
|
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;
|
|
} ____cacheline_aligned;
|
|
|
|
struct se_dev_entry {
|
|
bool def_pr_registered;
|
|
/* 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;
|
|
int is_nonrot;
|
|
int emulate_rest_reord;
|
|
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 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_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_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 list_head se_dev_node;
|
|
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;
|
|
} ____cacheline_aligned;
|
|
|
|
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;
|
|
atomic_t dev_qf_count;
|
|
struct se_obj dev_obj;
|
|
struct se_obj dev_access_obj;
|
|
struct se_obj dev_export_obj;
|
|
struct se_queue_obj dev_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;
|
|
spinlock_t qf_cmd_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 work_struct qf_work_queue;
|
|
struct list_head delayed_cmd_list;
|
|
struct list_head ordered_cmd_list;
|
|
struct list_head execute_task_list;
|
|
struct list_head state_task_list;
|
|
struct list_head qf_cmd_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;
|
|
|
|
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;
|
|
/* 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;
|
|
struct mutex hba_access_mutex;
|
|
struct se_subsystem_api *transport;
|
|
} ____cacheline_aligned;
|
|
|
|
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 {
|
|
/* 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;
|
|
} ____cacheline_aligned;
|
|
|
|
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 se_portal_group *tpg_np_parent;
|
|
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_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[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;
|
|
|
|
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;
|
|
} ____cacheline_aligned;
|
|
|
|
#endif /* TARGET_CORE_BASE_H */
|