From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/target/target_core_base.h | 926 +++++++++++++++++++++++++++++++ 1 file changed, 926 insertions(+) create mode 100644 kernel/include/target/target_core_base.h (limited to 'kernel/include/target/target_core_base.h') diff --git a/kernel/include/target/target_core_base.h b/kernel/include/target/target_core_base.h new file mode 100644 index 000000000..480e9f82d --- /dev/null +++ b/kernel/include/target/target_core_base.h @@ -0,0 +1,926 @@ +#ifndef TARGET_CORE_BASE_H +#define TARGET_CORE_BASE_H + +#include +#include +#include +#include +#include +#include +#include +#include + +#define TARGET_CORE_MOD_VERSION "v4.1.0" +#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION + +/* Maximum Number of LUNs per Target Portal Group */ +/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ +#define TRANSPORT_MAX_LUNS_PER_TPG 256 +/* + * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. + * + * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and + * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use + * 16-byte CDBs by default and require an extra allocation for + * 32-byte CDBs to because of legacy issues. + * + * Within TCM Core there are no such legacy limitiations, so we go ahead + * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() + * within all TCM Core and subsystem plugin code. + */ +#define TCM_MAX_COMMAND_SIZE 32 +/* + * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently + * defined 96, but the real limit is 252 (or 260 including the header) + */ +#define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE +/* Used by transport_send_check_condition_and_sense() */ +#define SPC_SENSE_KEY_OFFSET 2 +#define SPC_ADD_SENSE_LEN_OFFSET 7 +#define SPC_DESC_TYPE_OFFSET 8 +#define SPC_ADDITIONAL_DESC_LEN_OFFSET 9 +#define SPC_VALIDITY_OFFSET 10 +#define SPC_ASC_KEY_OFFSET 12 +#define SPC_ASCQ_KEY_OFFSET 13 +#define TRANSPORT_IQN_LEN 224 +/* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ +#define LU_GROUP_NAME_BUF 256 +/* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ +#define TG_PT_GROUP_NAME_BUF 256 +/* Used to parse VPD into struct t10_vpd */ +#define VPD_TMP_BUF_SIZE 254 +/* Used by transport_generic_cmd_sequencer() */ +#define READ_BLOCK_LEN 6 +#define READ_CAP_LEN 8 +#define READ_POSITION_LEN 20 +#define INQUIRY_LEN 36 +/* Used by transport_get_inquiry_vpd_serial() */ +#define INQUIRY_VPD_SERIAL_LEN 254 +/* Used by transport_get_inquiry_vpd_device_ident() */ +#define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 + +/* Attempts before moving from SHORT to LONG */ +#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 +#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ +#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ + +#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ + +/* struct se_dev_attrib sanity values */ +/* Default max_unmap_lba_count */ +#define DA_MAX_UNMAP_LBA_COUNT 0 +/* Default max_unmap_block_desc_count */ +#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 +/* Default unmap_granularity */ +#define DA_UNMAP_GRANULARITY_DEFAULT 0 +/* Default unmap_granularity_alignment */ +#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 +/* Default max_write_same_len, disabled by default */ +#define DA_MAX_WRITE_SAME_LEN 0 +/* Use a model alias based on the configfs backend device name */ +#define DA_EMULATE_MODEL_ALIAS 0 +/* Emulation for Direct Page Out */ +#define DA_EMULATE_DPO 0 +/* Emulation for Forced Unit Access WRITEs */ +#define DA_EMULATE_FUA_WRITE 1 +/* Emulation for Forced Unit Access READs */ +#define DA_EMULATE_FUA_READ 0 +/* Emulation for WriteCache and SYNCHRONIZE_CACHE */ +#define DA_EMULATE_WRITE_CACHE 0 +/* Emulation for UNIT ATTENTION Interlock Control */ +#define DA_EMULATE_UA_INTLLCK_CTRL 0 +/* Emulation for TASK_ABORTED status (TAS) by default */ +#define DA_EMULATE_TAS 1 +/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ +#define DA_EMULATE_TPU 0 +/* + * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using + * block/blk-lib.c:blkdev_issue_discard() + */ +#define DA_EMULATE_TPWS 0 +/* Emulation for CompareAndWrite (AtomicTestandSet) by default */ +#define DA_EMULATE_CAW 1 +/* Emulation for 3rd Party Copy (ExtendedCopy) by default */ +#define DA_EMULATE_3PC 1 +/* No Emulation for PSCSI by default */ +#define DA_EMULATE_ALUA 0 +/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ +#define DA_ENFORCE_PR_ISIDS 1 +/* Force SPC-3 PR Activate Persistence across Target Power Loss */ +#define DA_FORCE_PR_APTPL 0 +#define DA_STATUS_MAX_SECTORS_MIN 16 +#define DA_STATUS_MAX_SECTORS_MAX 8192 +/* By default don't report non-rotating (solid state) medium */ +#define DA_IS_NONROT 0 +/* Queue Algorithm Modifier default for restricted reordering in control mode page */ +#define DA_EMULATE_REST_REORD 0 + +#define SE_INQUIRY_BUF 1024 +#define SE_MODE_PAGE_BUF 512 +#define SE_SENSE_BUF 96 + +/* struct se_hba->hba_flags */ +enum hba_flags_table { + HBA_FLAGS_INTERNAL_USE = 0x01, + HBA_FLAGS_PSCSI_MODE = 0x02, +}; + +/* struct se_lun->lun_status */ +enum transport_lun_status_table { + TRANSPORT_LUN_STATUS_FREE = 0, + TRANSPORT_LUN_STATUS_ACTIVE = 1, +}; + +/* struct se_portal_group->se_tpg_type */ +enum transport_tpg_type_table { + TRANSPORT_TPG_TYPE_NORMAL = 0, + TRANSPORT_TPG_TYPE_DISCOVERY = 1, +}; + +/* Special transport agnostic struct se_cmd->t_states */ +enum transport_state_table { + TRANSPORT_NO_STATE = 0, + TRANSPORT_NEW_CMD = 1, + TRANSPORT_WRITE_PENDING = 3, + TRANSPORT_PROCESSING = 5, + TRANSPORT_COMPLETE = 6, + TRANSPORT_ISTATE_PROCESSING = 11, + TRANSPORT_COMPLETE_QF_WP = 18, + TRANSPORT_COMPLETE_QF_OK = 19, +}; + +/* Used for struct se_cmd->se_cmd_flags */ +enum se_cmd_flags_table { + SCF_SUPPORTED_SAM_OPCODE = 0x00000001, + SCF_TRANSPORT_TASK_SENSE = 0x00000002, + SCF_EMULATED_TASK_SENSE = 0x00000004, + SCF_SCSI_DATA_CDB = 0x00000008, + SCF_SCSI_TMR_CDB = 0x00000010, + SCF_FUA = 0x00000080, + SCF_SE_LUN_CMD = 0x00000100, + SCF_BIDI = 0x00000400, + SCF_SENT_CHECK_CONDITION = 0x00000800, + SCF_OVERFLOW_BIT = 0x00001000, + SCF_UNDERFLOW_BIT = 0x00002000, + SCF_SEND_DELAYED_TAS = 0x00004000, + SCF_ALUA_NON_OPTIMIZED = 0x00008000, + SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, + SCF_COMPARE_AND_WRITE = 0x00080000, + SCF_COMPARE_AND_WRITE_POST = 0x00100000, +}; + +/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ +enum transport_lunflags_table { + TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, + TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, + TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, + TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, +}; + +/* + * Used by transport_send_check_condition_and_sense() + * to signal which ASC/ASCQ sense payload should be built. + */ +typedef unsigned __bitwise__ sense_reason_t; + +enum tcm_sense_reason_table { +#define R(x) (__force sense_reason_t )(x) + TCM_NO_SENSE = R(0x00), + TCM_NON_EXISTENT_LUN = R(0x01), + TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), + TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), + TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), + TCM_SERVICE_CRC_ERROR = R(0x05), + TCM_SNACK_REJECTED = R(0x06), + TCM_SECTOR_COUNT_TOO_MANY = R(0x07), + TCM_INVALID_CDB_FIELD = R(0x08), + TCM_INVALID_PARAMETER_LIST = R(0x09), + TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), + TCM_UNKNOWN_MODE_PAGE = R(0x0b), + TCM_WRITE_PROTECTED = R(0x0c), + TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), + TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), + TCM_CHECK_CONDITION_NOT_READY = R(0x0f), + TCM_RESERVATION_CONFLICT = R(0x10), + TCM_ADDRESS_OUT_OF_RANGE = R(0x11), + TCM_OUT_OF_RESOURCES = R(0x12), + TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), + TCM_MISCOMPARE_VERIFY = R(0x14), + TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), + TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), + TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), +#undef R +}; + +enum target_sc_flags_table { + TARGET_SCF_BIDI_OP = 0x01, + TARGET_SCF_ACK_KREF = 0x02, + TARGET_SCF_UNKNOWN_SIZE = 0x04, +}; + +/* fabric independent task management function values */ +enum tcm_tmreq_table { + TMR_ABORT_TASK = 1, + TMR_ABORT_TASK_SET = 2, + TMR_CLEAR_ACA = 3, + TMR_CLEAR_TASK_SET = 4, + TMR_LUN_RESET = 5, + TMR_TARGET_WARM_RESET = 6, + TMR_TARGET_COLD_RESET = 7, +}; + +/* fabric independent task management response values */ +enum tcm_tmrsp_table { + TMR_FUNCTION_FAILED = 0, + TMR_FUNCTION_COMPLETE = 1, + TMR_TASK_DOES_NOT_EXIST = 2, + TMR_LUN_DOES_NOT_EXIST = 3, + TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, + TMR_FUNCTION_REJECTED = 5, +}; + +/* + * Used for target SCSI statistics + */ +typedef enum { + SCSI_INST_INDEX, + SCSI_DEVICE_INDEX, + SCSI_AUTH_INTR_INDEX, + SCSI_INDEX_TYPE_MAX +} scsi_index_t; + +struct se_cmd; + +struct t10_alua_lba_map_member { + struct list_head lba_map_mem_list; + int lba_map_mem_alua_state; + int lba_map_mem_alua_pg_id; +}; + +struct t10_alua_lba_map { + u64 lba_map_first_lba; + u64 lba_map_last_lba; + struct list_head lba_map_list; + struct list_head lba_map_mem_list; +}; + +struct t10_alua { + /* ALUA Target Port Group ID */ + u16 alua_tg_pt_gps_counter; + u32 alua_tg_pt_gps_count; + /* Referrals support */ + spinlock_t lba_map_lock; + u32 lba_map_segment_size; + u32 lba_map_segment_multiplier; + struct list_head lba_map_list; + spinlock_t tg_pt_gps_lock; + struct se_device *t10_dev; + /* Used for default ALUA Target Port Group */ + struct t10_alua_tg_pt_gp *default_tg_pt_gp; + /* Used for default ALUA Target Port Group ConfigFS group */ + struct config_group alua_tg_pt_gps_group; + struct list_head tg_pt_gps_list; +}; + +struct t10_alua_lu_gp { + u16 lu_gp_id; + int lu_gp_valid_id; + u32 lu_gp_members; + atomic_t lu_gp_ref_cnt; + spinlock_t lu_gp_lock; + struct config_group lu_gp_group; + struct list_head lu_gp_node; + struct list_head lu_gp_mem_list; +}; + +struct t10_alua_lu_gp_member { + bool lu_gp_assoc; + atomic_t lu_gp_mem_ref_cnt; + spinlock_t lu_gp_mem_lock; + struct t10_alua_lu_gp *lu_gp; + struct se_device *lu_gp_mem_dev; + struct list_head lu_gp_mem_list; +}; + +struct t10_alua_tg_pt_gp { + u16 tg_pt_gp_id; + int tg_pt_gp_valid_id; + int tg_pt_gp_alua_supported_states; + int tg_pt_gp_alua_pending_state; + int tg_pt_gp_alua_previous_state; + int tg_pt_gp_alua_access_status; + int tg_pt_gp_alua_access_type; + int tg_pt_gp_nonop_delay_msecs; + int tg_pt_gp_trans_delay_msecs; + int tg_pt_gp_implicit_trans_secs; + int tg_pt_gp_pref; + int tg_pt_gp_write_metadata; + u32 tg_pt_gp_members; + atomic_t tg_pt_gp_alua_access_state; + atomic_t tg_pt_gp_ref_cnt; + spinlock_t tg_pt_gp_lock; + struct mutex tg_pt_gp_md_mutex; + struct se_device *tg_pt_gp_dev; + struct config_group tg_pt_gp_group; + struct list_head tg_pt_gp_list; + struct list_head tg_pt_gp_mem_list; + struct se_port *tg_pt_gp_alua_port; + struct se_node_acl *tg_pt_gp_alua_nacl; + struct delayed_work tg_pt_gp_transition_work; + struct completion *tg_pt_gp_transition_complete; +}; + +struct t10_alua_tg_pt_gp_member { + bool tg_pt_gp_assoc; + atomic_t tg_pt_gp_mem_ref_cnt; + spinlock_t tg_pt_gp_mem_lock; + struct t10_alua_tg_pt_gp *tg_pt_gp; + struct se_port *tg_pt; + struct list_head tg_pt_gp_mem_list; +}; + +struct t10_vpd { + unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; + int protocol_identifier_set; + u32 protocol_identifier; + u32 device_identifier_code_set; + u32 association; + u32 device_identifier_type; + struct list_head vpd_list; +}; + +struct t10_wwn { + char vendor[8]; + char model[16]; + char revision[4]; + char unit_serial[INQUIRY_VPD_SERIAL_LEN]; + spinlock_t t10_vpd_lock; + struct se_device *t10_dev; + struct config_group t10_wwn_group; + struct list_head t10_vpd_list; +}; + +struct t10_pr_registration { + /* Used for fabrics that contain WWN+ISID */ +#define PR_REG_ISID_LEN 16 + /* PR_REG_ISID_LEN + ',i,0x' */ +#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) + char pr_reg_isid[PR_REG_ISID_LEN]; + /* Used during APTPL metadata reading */ +#define PR_APTPL_MAX_IPORT_LEN 256 + unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; + /* Used during APTPL metadata reading */ +#define PR_APTPL_MAX_TPORT_LEN 256 + unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; + u16 pr_aptpl_rpti; + u16 pr_reg_tpgt; + /* Reservation effects all target ports */ + int pr_reg_all_tg_pt; + /* Activate Persistence across Target Power Loss */ + int pr_reg_aptpl; + int pr_res_holder; + int pr_res_type; + int pr_res_scope; + /* Used for fabric initiator WWPNs using a ISID */ + bool isid_present_at_reg; + u32 pr_res_mapped_lun; + u32 pr_aptpl_target_lun; + u32 pr_res_generation; + u64 pr_reg_bin_isid; + u64 pr_res_key; + atomic_t pr_res_holders; + struct se_node_acl *pr_reg_nacl; + struct se_dev_entry *pr_reg_deve; + struct se_lun *pr_reg_tg_pt_lun; + struct list_head pr_reg_list; + struct list_head pr_reg_abort_list; + struct list_head pr_reg_aptpl_list; + struct list_head pr_reg_atp_list; + struct list_head pr_reg_atp_mem_list; +}; + +struct t10_reservation { + /* Reservation effects all target ports */ + int pr_all_tg_pt; + /* Activate Persistence across Target Power Loss enabled + * for SCSI device */ + int pr_aptpl_active; +#define PR_APTPL_BUF_LEN 262144 + u32 pr_generation; + spinlock_t registration_lock; + spinlock_t aptpl_reg_lock; + /* + * This will always be set by one individual I_T Nexus. + * However with all_tg_pt=1, other I_T Nexus from the + * same initiator can access PR reg/res info on a different + * target port. + * + * There is also the 'All Registrants' case, where there is + * a single *pr_res_holder of the reservation, but all + * registrations are considered reservation holders. + */ + struct se_node_acl *pr_res_holder; + struct list_head registration_list; + struct list_head aptpl_reg_list; +}; + +struct se_tmr_req { + /* Task Management function to be performed */ + u8 function; + /* Task Management response to send */ + u8 response; + int call_transport; + /* Reference to ITT that Task Mgmt should be performed */ + u32 ref_task_tag; + void *fabric_tmr_ptr; + struct se_cmd *task_cmd; + struct se_device *tmr_dev; + struct se_lun *tmr_lun; + struct list_head tmr_list; +}; + +enum target_prot_op { + TARGET_PROT_NORMAL = 0, + TARGET_PROT_DIN_INSERT = (1 << 0), + TARGET_PROT_DOUT_INSERT = (1 << 1), + TARGET_PROT_DIN_STRIP = (1 << 2), + TARGET_PROT_DOUT_STRIP = (1 << 3), + TARGET_PROT_DIN_PASS = (1 << 4), + TARGET_PROT_DOUT_PASS = (1 << 5), +}; + +#define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ + TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ + TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS + +enum target_prot_type { + TARGET_DIF_TYPE0_PROT, + TARGET_DIF_TYPE1_PROT, + TARGET_DIF_TYPE2_PROT, + TARGET_DIF_TYPE3_PROT, +}; + +enum target_core_dif_check { + TARGET_DIF_CHECK_GUARD = 0x1 << 0, + TARGET_DIF_CHECK_APPTAG = 0x1 << 1, + TARGET_DIF_CHECK_REFTAG = 0x1 << 2, +}; + +struct se_dif_v1_tuple { + __be16 guard_tag; + __be16 app_tag; + __be32 ref_tag; +}; + +/* for sam_task_attr */ +#define TCM_SIMPLE_TAG 0x20 +#define TCM_HEAD_TAG 0x21 +#define TCM_ORDERED_TAG 0x22 +#define TCM_ACA_TAG 0x24 + +struct se_cmd { + /* SAM response code being sent to initiator */ + u8 scsi_status; + u8 scsi_asc; + u8 scsi_ascq; + u16 scsi_sense_length; + /* Delay for ALUA Active/NonOptimized state access in milliseconds */ + int alua_nonop_delay; + /* See include/linux/dma-mapping.h */ + enum dma_data_direction data_direction; + /* For SAM Task Attribute */ + int sam_task_attr; + /* Used for se_sess->sess_tag_pool */ + unsigned int map_tag; + /* Transport protocol dependent state, see transport_state_table */ + enum transport_state_table t_state; + unsigned cmd_wait_set:1; + unsigned unknown_data_length:1; + /* See se_cmd_flags_table */ + u32 se_cmd_flags; + u32 se_ordered_id; + /* Total size in bytes associated with command */ + u32 data_length; + u32 residual_count; + u32 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_dev_entry *se_deve; + struct se_lun *se_lun; + /* Only used for internal passthrough and legacy TCM fabric modules */ + struct se_session *se_sess; + struct se_tmr_req *se_tmr_req; + struct list_head se_cmd_list; + struct completion cmd_wait_comp; + struct kref cmd_kref; + const struct target_core_fabric_ops *se_tfo; + sense_reason_t (*execute_cmd)(struct se_cmd *); + sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *, + u32, enum dma_data_direction); + sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool); + + 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_DEV_ACTIVE (1 << 7) +#define CMD_T_REQUEST_STOP (1 << 8) +#define CMD_T_BUSY (1 << 9) + spinlock_t t_state_lock; + 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; + + struct list_head state_list; + bool state_active; + + /* old task stop completion, consider merging with some of the above */ + struct completion task_stop_comp; + + /* backend private data */ + void *priv; + + /* Used for lun->lun_ref counting */ + int lun_ref_active; + + /* DIF related members */ + enum target_prot_op prot_op; + enum target_prot_type prot_type; + u8 prot_checks; + u32 prot_length; + u32 reftag_seed; + struct scatterlist *t_prot_sg; + unsigned int t_prot_nents; + sense_reason_t pi_err; + sector_t bad_sector; + bool prot_pto; +}; + +struct se_ua { + u8 ua_asc; + u8 ua_ascq; + struct se_node_acl *ua_nacl; + 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 acl_stop:1; + 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 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; + struct completion acl_free_comp; + struct kref acl_kref; +}; + +struct se_session { + unsigned sess_tearing_down:1; + u64 sess_bin_isid; + enum target_prot_op sup_prot_ops; + enum target_prot_type sess_prot_type; + struct se_node_acl *se_node_acl; + struct se_portal_group *se_tpg; + void *fabric_sess_ptr; + struct list_head sess_list; + struct list_head sess_acl_list; + struct list_head sess_cmd_list; + struct list_head sess_wait_list; + spinlock_t sess_cmd_lock; + struct kref sess_kref; + void *sess_cmd_map; + struct percpu_ida sess_tag_pool; +}; + +struct se_device; +struct se_transform_info; +struct scatterlist; + +struct se_ml_stat_grps { + struct config_group stat_group; + struct config_group scsi_auth_intr_group; + struct config_group scsi_att_intr_port_group; +}; + +struct se_lun_acl { + 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; +}; + +struct se_dev_entry { + bool def_pr_registered; + /* See transport_lunflags_table */ + u32 lun_flags; + u32 mapped_lun; + u32 total_cmds; + 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; +}; + +struct se_dev_attrib { + int emulate_model_alias; + int emulate_dpo; + int emulate_fua_write; + int emulate_fua_read; + int emulate_write_cache; + int emulate_ua_intlck_ctrl; + int emulate_tas; + int emulate_tpu; + int emulate_tpws; + int emulate_caw; + int emulate_3pc; + int pi_prot_format; + enum target_prot_type pi_prot_type; + enum target_prot_type hw_pi_prot_type; + int enforce_pr_isids; + int force_pr_aptpl; + int is_nonrot; + int emulate_rest_reord; + 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 se_lun { +#define SE_LUN_LINK_MAGIC 0xffff7771 + u32 lun_link_magic; + /* See transport_lun_status_table */ + enum transport_lun_status_table lun_status; + u32 lun_access; + u32 lun_flags; + u32 unpacked_lun; + atomic_t lun_acl_count; + spinlock_t lun_acl_lock; + spinlock_t lun_sep_lock; + struct completion lun_shutdown_comp; + 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; + struct completion lun_ref_comp; + struct percpu_ref lun_ref; +}; + +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 { +#define SE_DEV_LINK_MAGIC 0xfeeddeef + u32 dev_link_magic; + /* RELATIVE TARGET PORT IDENTIFER Counter */ + u16 dev_rpti_counter; + /* Used for SAM Task Attribute ordering */ + u32 dev_cur_ordered_id; + u32 dev_flags; +#define DF_CONFIGURED 0x00000001 +#define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 +#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 +#define DF_USING_UDEV_PATH 0x00000008 +#define DF_USING_ALIAS 0x00000010 + u32 dev_port_count; + /* 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 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_id; + atomic_t dev_ordered_sync; + atomic_t dev_qf_count; + int export_count; + spinlock_t delayed_cmd_lock; + spinlock_t execute_task_lock; + spinlock_t dev_reservation_lock; + unsigned int dev_reservation_flags; +#define DRF_SPC2_RESERVATIONS 0x00000001 +#define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 + spinlock_t se_port_lock; + spinlock_t se_tmr_lock; + spinlock_t qf_cmd_lock; + struct semaphore caw_sem; + /* Used for legacy SPC-2 reservationsa */ + struct se_node_acl *dev_reserved_node_acl; + /* Used for ALUA Logical Unit Group membership */ + struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; + /* Used for SPC-3 Persistent Reservations */ + struct t10_pr_registration *dev_pr_res_holder; + struct list_head dev_sep_list; + struct list_head dev_tmr_list; + struct workqueue_struct *tmr_wq; + struct work_struct qf_work_queue; + struct list_head delayed_cmd_list; + struct list_head state_list; + struct list_head qf_cmd_list; + struct list_head g_dev_node; + /* 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_group; + struct config_group dev_pr_group; + struct se_dev_stat_grps dev_stat_grps; +#define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ + unsigned char dev_alias[SE_DEV_ALIAS_LEN]; +#define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ + unsigned char udev_path[SE_UDEV_PATH_LEN]; + /* Pointer to template of function pointers for transport */ + struct se_subsystem_api *transport; + /* Linked list for struct se_hba struct se_device list */ + struct list_head dev_list; + struct se_lun xcopy_lun; + /* Protection Information */ + int prot_length; +}; + +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 se_subsystem_api *transport; +}; + +struct scsi_port_stats { + u64 cmd_pdus; + u64 tx_data_octets; + u64 rx_data_octets; +}; + +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_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; +}; + +struct se_tpg_np { + struct se_portal_group *tpg_np_parent; + struct config_group tpg_np_group; +}; + +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 */ + const 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[7]; + 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; +}; + +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; +}; + +static inline void atomic_inc_mb(atomic_t *v) +{ + smp_mb__before_atomic(); + atomic_inc(v); + smp_mb__after_atomic(); +} + +static inline void atomic_dec_mb(atomic_t *v) +{ + smp_mb__before_atomic(); + atomic_dec(v); + smp_mb__after_atomic(); +} + +#endif /* TARGET_CORE_BASE_H */ -- cgit 1.2.3-korg