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963 lines
27 KiB
963 lines
27 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef TARGET_CORE_BASE_H |
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#define TARGET_CORE_BASE_H |
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#include <linux/configfs.h> /* struct config_group */ |
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#include <linux/dma-direction.h> /* enum dma_data_direction */ |
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#include <linux/sbitmap.h> |
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#include <linux/percpu-refcount.h> |
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#include <linux/semaphore.h> /* struct semaphore */ |
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#include <linux/completion.h> |
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#define TARGET_CORE_VERSION "v5.0" |
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/* |
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* Maximum size of a CDB that can be stored in se_cmd without allocating |
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* memory dynamically for the CDB. |
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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 96 |
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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_ADD_SENSE_LEN_OFFSET 7 |
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#define SPC_DESC_TYPE_OFFSET 8 |
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#define SPC_ADDITIONAL_DESC_LEN_OFFSET 9 |
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#define SPC_VALIDITY_OFFSET 10 |
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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 254 |
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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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#define INQUIRY_VENDOR_LEN 8 |
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#define INQUIRY_MODEL_LEN 16 |
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#define INQUIRY_REVISION_LEN 4 |
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/* Attempts before moving from SHORT to LONG */ |
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#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 |
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#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ |
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#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ |
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#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ |
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/* struct se_dev_attrib sanity values */ |
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/* Default max_unmap_lba_count */ |
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#define DA_MAX_UNMAP_LBA_COUNT 0 |
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/* Default max_unmap_block_desc_count */ |
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#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 |
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/* Default unmap_granularity */ |
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#define DA_UNMAP_GRANULARITY_DEFAULT 0 |
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/* Default unmap_granularity_alignment */ |
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#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 |
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/* Default unmap_zeroes_data */ |
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#define DA_UNMAP_ZEROES_DATA_DEFAULT 0 |
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/* Default max_write_same_len, disabled by default */ |
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#define DA_MAX_WRITE_SAME_LEN 0 |
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/* Use a model alias based on the configfs backend device name */ |
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#define DA_EMULATE_MODEL_ALIAS 0 |
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/* Emulation for WriteCache and SYNCHRONIZE_CACHE */ |
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#define DA_EMULATE_WRITE_CACHE 0 |
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/* Emulation for TASK_ABORTED status (TAS) by default */ |
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#define DA_EMULATE_TAS 1 |
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/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ |
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#define DA_EMULATE_TPU 0 |
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/* |
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* Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using |
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* block/blk-lib.c:blkdev_issue_discard() |
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*/ |
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#define DA_EMULATE_TPWS 0 |
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/* Emulation for CompareAndWrite (AtomicTestandSet) by default */ |
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#define DA_EMULATE_CAW 1 |
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/* Emulation for 3rd Party Copy (ExtendedCopy) by default */ |
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#define DA_EMULATE_3PC 1 |
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/* No Emulation for PSCSI by default */ |
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#define DA_EMULATE_ALUA 0 |
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/* Emulate SCSI2 RESERVE/RELEASE and Persistent Reservations by default */ |
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#define DA_EMULATE_PR 1 |
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/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ |
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#define DA_ENFORCE_PR_ISIDS 1 |
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/* Force SPC-3 PR Activate Persistence across Target Power Loss */ |
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#define DA_FORCE_PR_APTPL 0 |
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#define DA_STATUS_MAX_SECTORS_MIN 16 |
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#define DA_STATUS_MAX_SECTORS_MAX 8192 |
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/* By default don't report non-rotating (solid state) medium */ |
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#define DA_IS_NONROT 0 |
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/* Queue Algorithm Modifier default for restricted reordering in control mode page */ |
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#define DA_EMULATE_REST_REORD 0 |
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#define SE_INQUIRY_BUF 1024 |
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#define SE_MODE_PAGE_BUF 512 |
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#define SE_SENSE_BUF 96 |
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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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/* 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_PROCESSING = 5, |
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TRANSPORT_COMPLETE = 6, |
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TRANSPORT_ISTATE_PROCESSING = 11, |
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TRANSPORT_COMPLETE_QF_WP = 18, |
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TRANSPORT_COMPLETE_QF_OK = 19, |
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TRANSPORT_COMPLETE_QF_ERR = 20, |
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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_CDB = 0x00000008, |
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SCF_SCSI_TMR_CDB = 0x00000010, |
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SCF_FUA = 0x00000080, |
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SCF_SE_LUN_CMD = 0x00000100, |
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SCF_BIDI = 0x00000400, |
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SCF_SENT_CHECK_CONDITION = 0x00000800, |
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SCF_OVERFLOW_BIT = 0x00001000, |
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SCF_UNDERFLOW_BIT = 0x00002000, |
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SCF_ALUA_NON_OPTIMIZED = 0x00008000, |
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SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, |
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SCF_COMPARE_AND_WRITE = 0x00080000, |
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SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000, |
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SCF_ACK_KREF = 0x00400000, |
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SCF_USE_CPUID = 0x00800000, |
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SCF_TASK_ATTR_SET = 0x01000000, |
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SCF_TREAT_READ_AS_NORMAL = 0x02000000, |
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}; |
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/* |
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* Used by transport_send_check_condition_and_sense() |
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* to signal which ASC/ASCQ sense payload should be built. |
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*/ |
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typedef unsigned __bitwise sense_reason_t; |
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enum tcm_sense_reason_table { |
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#define R(x) (__force sense_reason_t )(x) |
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TCM_NO_SENSE = R(0x00), |
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TCM_NON_EXISTENT_LUN = R(0x01), |
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TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), |
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TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), |
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TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), |
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TCM_SERVICE_CRC_ERROR = R(0x05), |
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TCM_SNACK_REJECTED = R(0x06), |
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TCM_SECTOR_COUNT_TOO_MANY = R(0x07), |
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TCM_INVALID_CDB_FIELD = R(0x08), |
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TCM_INVALID_PARAMETER_LIST = R(0x09), |
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TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), |
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TCM_UNKNOWN_MODE_PAGE = R(0x0b), |
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TCM_WRITE_PROTECTED = R(0x0c), |
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TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), |
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TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), |
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TCM_CHECK_CONDITION_NOT_READY = R(0x0f), |
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TCM_RESERVATION_CONFLICT = R(0x10), |
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TCM_ADDRESS_OUT_OF_RANGE = R(0x11), |
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TCM_OUT_OF_RESOURCES = R(0x12), |
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TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), |
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TCM_MISCOMPARE_VERIFY = R(0x14), |
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TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), |
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TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), |
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TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), |
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TCM_COPY_TARGET_DEVICE_NOT_REACHABLE = R(0x18), |
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TCM_TOO_MANY_TARGET_DESCS = R(0x19), |
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TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE = R(0x1a), |
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TCM_TOO_MANY_SEGMENT_DESCS = R(0x1b), |
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TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE = R(0x1c), |
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TCM_INSUFFICIENT_REGISTRATION_RESOURCES = R(0x1d), |
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TCM_LUN_BUSY = R(0x1e), |
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TCM_INVALID_FIELD_IN_COMMAND_IU = R(0x1f), |
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#undef R |
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}; |
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enum target_sc_flags_table { |
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TARGET_SCF_BIDI_OP = 0x01, |
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TARGET_SCF_ACK_KREF = 0x02, |
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TARGET_SCF_UNKNOWN_SIZE = 0x04, |
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TARGET_SCF_USE_CPUID = 0x08, |
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}; |
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/* fabric independent task management function values */ |
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enum tcm_tmreq_table { |
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TMR_ABORT_TASK = 1, |
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TMR_ABORT_TASK_SET = 2, |
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TMR_CLEAR_ACA = 3, |
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TMR_CLEAR_TASK_SET = 4, |
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TMR_LUN_RESET = 5, |
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TMR_TARGET_WARM_RESET = 6, |
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TMR_TARGET_COLD_RESET = 7, |
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TMR_LUN_RESET_PRO = 0x80, |
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TMR_UNKNOWN = 0xff, |
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}; |
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/* fabric independent task management response values */ |
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enum tcm_tmrsp_table { |
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TMR_FUNCTION_FAILED = 0, |
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TMR_FUNCTION_COMPLETE = 1, |
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TMR_TASK_DOES_NOT_EXIST = 2, |
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TMR_LUN_DOES_NOT_EXIST = 3, |
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TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, |
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TMR_FUNCTION_REJECTED = 5, |
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}; |
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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_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_lba_map_member { |
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struct list_head lba_map_mem_list; |
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int lba_map_mem_alua_state; |
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int lba_map_mem_alua_pg_id; |
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}; |
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struct t10_alua_lba_map { |
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u64 lba_map_first_lba; |
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u64 lba_map_last_lba; |
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struct list_head lba_map_list; |
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struct list_head lba_map_mem_list; |
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}; |
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struct t10_alua { |
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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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/* Referrals support */ |
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spinlock_t lba_map_lock; |
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u32 lba_map_segment_size; |
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u32 lba_map_segment_multiplier; |
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struct list_head lba_map_list; |
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spinlock_t tg_pt_gps_lock; |
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struct se_device *t10_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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struct list_head tg_pt_gps_list; |
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}; |
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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_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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}; |
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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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}; |
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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_supported_states; |
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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_implicit_trans_secs; |
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int tg_pt_gp_pref; |
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int tg_pt_gp_write_metadata; |
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u32 tg_pt_gp_members; |
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int 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_transition_mutex; |
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struct se_device *tg_pt_gp_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_lun_list; |
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struct se_lun *tg_pt_gp_alua_lun; |
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struct se_node_acl *tg_pt_gp_alua_nacl; |
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}; |
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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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}; |
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struct t10_wwn { |
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/* |
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* SCSI left aligned strings may not be null terminated. +1 to ensure a |
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* null terminator is always present. |
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*/ |
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char vendor[INQUIRY_VENDOR_LEN + 1]; |
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char model[INQUIRY_MODEL_LEN + 1]; |
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char revision[INQUIRY_REVISION_LEN + 1]; |
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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_device *t10_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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}; |
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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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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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u64 pr_res_mapped_lun; |
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u64 pr_aptpl_target_lun; |
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u16 tg_pt_sep_rtpi; |
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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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/* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */ |
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struct se_dev_entry *pr_reg_deve; |
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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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}; |
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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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#define PR_APTPL_BUF_LEN 262144 |
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u32 pr_generation; |
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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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}; |
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struct se_tmr_req { |
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/* Task Management function to be performed */ |
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u8 function; |
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/* Task Management response to send */ |
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u8 response; |
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int call_transport; |
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/* Reference to ITT that Task Mgmt should be performed */ |
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u64 ref_task_tag; |
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void *fabric_tmr_ptr; |
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struct se_cmd *task_cmd; |
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struct se_device *tmr_dev; |
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struct list_head tmr_list; |
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}; |
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enum target_prot_op { |
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TARGET_PROT_NORMAL = 0, |
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TARGET_PROT_DIN_INSERT = (1 << 0), |
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TARGET_PROT_DOUT_INSERT = (1 << 1), |
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TARGET_PROT_DIN_STRIP = (1 << 2), |
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TARGET_PROT_DOUT_STRIP = (1 << 3), |
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TARGET_PROT_DIN_PASS = (1 << 4), |
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TARGET_PROT_DOUT_PASS = (1 << 5), |
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}; |
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#define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ |
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TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ |
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TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS |
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enum target_prot_type { |
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TARGET_DIF_TYPE0_PROT, |
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TARGET_DIF_TYPE1_PROT, |
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TARGET_DIF_TYPE2_PROT, |
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TARGET_DIF_TYPE3_PROT, |
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}; |
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/* Emulation for UNIT ATTENTION Interlock Control */ |
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enum target_ua_intlck_ctrl { |
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TARGET_UA_INTLCK_CTRL_CLEAR = 0, |
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TARGET_UA_INTLCK_CTRL_NO_CLEAR = 1, |
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TARGET_UA_INTLCK_CTRL_ESTABLISH_UA = 2, |
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}; |
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enum target_core_dif_check { |
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TARGET_DIF_CHECK_GUARD = 0x1 << 0, |
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TARGET_DIF_CHECK_APPTAG = 0x1 << 1, |
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TARGET_DIF_CHECK_REFTAG = 0x1 << 2, |
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}; |
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/* for sam_task_attr */ |
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#define TCM_SIMPLE_TAG 0x20 |
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#define TCM_HEAD_TAG 0x21 |
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#define TCM_ORDERED_TAG 0x22 |
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#define TCM_ACA_TAG 0x24 |
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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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u16 scsi_sense_length; |
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unsigned unknown_data_length:1; |
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bool state_active:1; |
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u64 tag; /* SAM command identifier aka task tag */ |
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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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/* Used for se_sess->sess_tag_pool */ |
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unsigned int map_tag; |
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int map_cpu; |
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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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/* 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 *free_compl; |
|
struct completion *abrt_compl; |
|
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) |
|
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; |
|
u64 sense_info; |
|
/* |
|
* CPU LIO will execute the cmd on. Defaults to the CPU the cmd is |
|
* initialized on. Drivers can override. |
|
*/ |
|
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 { |
|
atomic_t stopped; |
|
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 percpu_ref cmd_count; |
|
struct list_head sess_list; |
|
struct list_head sess_acl_list; |
|
spinlock_t sess_cmd_lock; |
|
wait_queue_head_t cmd_count_wq; |
|
struct completion stop_done; |
|
void *sess_cmd_map; |
|
struct sbitmap_queue 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; |
|
/* 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 { |
|
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; |
|
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; |
|
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_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_queue { |
|
struct list_head state_list; |
|
spinlock_t lock; |
|
}; |
|
|
|
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 |
|
u8 transport_flags; |
|
/* 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 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 reservations */ |
|
struct se_session *reservation_holder; |
|
/* 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 work_struct qf_work_queue; |
|
struct list_head delayed_cmd_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; |
|
int queue_cnt; |
|
struct se_device_queue *queues; |
|
}; |
|
|
|
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; |
|
/* 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(); |
|
} |
|
|
|
static inline void target_free_tag(struct se_session *sess, struct se_cmd *cmd) |
|
{ |
|
sbitmap_queue_clear(&sess->sess_tag_pool, cmd->map_tag, cmd->map_cpu); |
|
} |
|
|
|
#endif /* TARGET_CORE_BASE_H */
|
|
|