linux/include/target/target_core_base.h
<<
>>
Prefs 
   1#ifndef TARGET_CORE_BASE_H
   2#define TARGET_CORE_BASE_H
   3
   4#include <linux/in.h>
   5#include <linux/configfs.h>
   6#include <linux/dma-mapping.h>
   7#include <linux/blkdev.h>
   8#include <scsi/scsi_cmnd.h>
   9#include <net/sock.h>
  10#include <net/tcp.h>
  11
  12#define TARGET_CORE_MOD_VERSION         "v4.1.0-rc2-ml"
  13#define TARGET_CORE_VERSION             TARGET_CORE_MOD_VERSION
  14
  15/* Maximum Number of LUNs per Target Portal Group */
  16/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
  17#define TRANSPORT_MAX_LUNS_PER_TPG              256
  18/*
  19 * By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
  20 *
  21 * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
  22 * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
  23 * 16-byte CDBs by default and require an extra allocation for
  24 * 32-byte CDBs to because of legacy issues.
  25 *
  26 * Within TCM Core there are no such legacy limitiations, so we go ahead
  27 * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
  28 * within all TCM Core and subsystem plugin code.
  29 */
  30#define TCM_MAX_COMMAND_SIZE                    32
  31/*
  32 * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
  33 * defined 96, but the real limit is 252 (or 260 including the header)
  34 */
  35#define TRANSPORT_SENSE_BUFFER                  SCSI_SENSE_BUFFERSIZE
  36/* Used by transport_send_check_condition_and_sense() */
  37#define SPC_SENSE_KEY_OFFSET                    2
  38#define SPC_ADD_SENSE_LEN_OFFSET                7
  39#define SPC_ASC_KEY_OFFSET                      12
  40#define SPC_ASCQ_KEY_OFFSET                     13
  41#define TRANSPORT_IQN_LEN                       224
  42/* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
  43#define LU_GROUP_NAME_BUF                       256
  44/* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
  45#define TG_PT_GROUP_NAME_BUF                    256
  46/* Used to parse VPD into struct t10_vpd */
  47#define VPD_TMP_BUF_SIZE                        254
  48/* Used by transport_generic_cmd_sequencer() */
  49#define READ_BLOCK_LEN                          6
  50#define READ_CAP_LEN                            8
  51#define READ_POSITION_LEN                       20
  52#define INQUIRY_LEN                             36
  53/* Used by transport_get_inquiry_vpd_serial() */
  54#define INQUIRY_VPD_SERIAL_LEN                  254
  55/* Used by transport_get_inquiry_vpd_device_ident() */
  56#define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN       254
  57
  58/* Attempts before moving from SHORT to LONG */
  59#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD   3
  60#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT  3  /* In milliseconds */
  61#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG   10 /* In milliseconds */
  62
  63#define PYX_TRANSPORT_STATUS_INTERVAL           5 /* In seconds */
  64
  65/* struct se_dev_attrib sanity values */
  66/* Default max_unmap_lba_count */
  67#define DA_MAX_UNMAP_LBA_COUNT                  0
  68/* Default max_unmap_block_desc_count */
  69#define DA_MAX_UNMAP_BLOCK_DESC_COUNT           0
  70/* Default unmap_granularity */
  71#define DA_UNMAP_GRANULARITY_DEFAULT            0
  72/* Default unmap_granularity_alignment */
  73#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT  0
  74/* Default max_write_same_len, disabled by default */
  75#define DA_MAX_WRITE_SAME_LEN                   0
  76/* Default max transfer length */
  77#define DA_FABRIC_MAX_SECTORS                   8192
  78/* Use a model alias based on the configfs backend device name */
  79#define DA_EMULATE_MODEL_ALIAS                  0
  80/* Emulation for Direct Page Out */
  81#define DA_EMULATE_DPO                          0
  82/* Emulation for Forced Unit Access WRITEs */
  83#define DA_EMULATE_FUA_WRITE                    1
  84/* Emulation for Forced Unit Access READs */
  85#define DA_EMULATE_FUA_READ                     0
  86/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
  87#define DA_EMULATE_WRITE_CACHE                  0
  88/* Emulation for UNIT ATTENTION Interlock Control */
  89#define DA_EMULATE_UA_INTLLCK_CTRL              0
  90/* Emulation for TASK_ABORTED status (TAS) by default */
  91#define DA_EMULATE_TAS                          1
  92/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
  93#define DA_EMULATE_TPU                          0
  94/*
  95 * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
  96 * block/blk-lib.c:blkdev_issue_discard()
  97 */
  98#define DA_EMULATE_TPWS                         0
  99/* No Emulation for PSCSI by default */
 100#define DA_EMULATE_ALUA                         0
 101/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
 102#define DA_ENFORCE_PR_ISIDS                     1
 103#define DA_STATUS_MAX_SECTORS_MIN               16
 104#define DA_STATUS_MAX_SECTORS_MAX               8192
 105/* By default don't report non-rotating (solid state) medium */
 106#define DA_IS_NONROT                            0
 107/* Queue Algorithm Modifier default for restricted reordering in control mode page */
 108#define DA_EMULATE_REST_REORD                   0
 109
 110#define SE_INQUIRY_BUF                          512
 111#define SE_MODE_PAGE_BUF                        512
 112#define SE_SENSE_BUF                            96
 113
 114/* struct se_hba->hba_flags */
 115enum hba_flags_table {
 116        HBA_FLAGS_INTERNAL_USE  = 0x01,
 117        HBA_FLAGS_PSCSI_MODE    = 0x02,
 118};
 119
 120/* struct se_lun->lun_status */
 121enum transport_lun_status_table {
 122        TRANSPORT_LUN_STATUS_FREE = 0,
 123        TRANSPORT_LUN_STATUS_ACTIVE = 1,
 124};
 125
 126/* struct se_portal_group->se_tpg_type */
 127enum transport_tpg_type_table {
 128        TRANSPORT_TPG_TYPE_NORMAL = 0,
 129        TRANSPORT_TPG_TYPE_DISCOVERY = 1,
 130};
 131
 132/* Special transport agnostic struct se_cmd->t_states */
 133enum transport_state_table {
 134        TRANSPORT_NO_STATE      = 0,
 135        TRANSPORT_NEW_CMD       = 1,
 136        TRANSPORT_WRITE_PENDING = 3,
 137        TRANSPORT_PROCESSING    = 5,
 138        TRANSPORT_COMPLETE      = 6,
 139        TRANSPORT_ISTATE_PROCESSING = 11,
 140        TRANSPORT_COMPLETE_QF_WP = 18,
 141        TRANSPORT_COMPLETE_QF_OK = 19,
 142};
 143
 144/* Used for struct se_cmd->se_cmd_flags */
 145enum se_cmd_flags_table {
 146        SCF_SUPPORTED_SAM_OPCODE        = 0x00000001,
 147        SCF_TRANSPORT_TASK_SENSE        = 0x00000002,
 148        SCF_EMULATED_TASK_SENSE         = 0x00000004,
 149        SCF_SCSI_DATA_CDB               = 0x00000008,
 150        SCF_SCSI_TMR_CDB                = 0x00000010,
 151        SCF_FUA                         = 0x00000080,
 152        SCF_SE_LUN_CMD                  = 0x00000100,
 153        SCF_BIDI                        = 0x00000400,
 154        SCF_SENT_CHECK_CONDITION        = 0x00000800,
 155        SCF_OVERFLOW_BIT                = 0x00001000,
 156        SCF_UNDERFLOW_BIT               = 0x00002000,
 157        SCF_SENT_DELAYED_TAS            = 0x00004000,
 158        SCF_ALUA_NON_OPTIMIZED          = 0x00008000,
 159        SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
 160        SCF_ACK_KREF                    = 0x00040000,
 161};
 162
 163/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
 164enum transport_lunflags_table {
 165        TRANSPORT_LUNFLAGS_NO_ACCESS            = 0x00,
 166        TRANSPORT_LUNFLAGS_INITIATOR_ACCESS     = 0x01,
 167        TRANSPORT_LUNFLAGS_READ_ONLY            = 0x02,
 168        TRANSPORT_LUNFLAGS_READ_WRITE           = 0x04,
 169};
 170
 171/*
 172 * Used by transport_send_check_condition_and_sense()
 173 * to signal which ASC/ASCQ sense payload should be built.
 174 */
 175typedef unsigned __bitwise__ sense_reason_t;
 176
 177enum tcm_sense_reason_table {
 178#define R(x)    (__force sense_reason_t )(x)
 179        TCM_NO_SENSE                            = R(0x00),
 180        TCM_NON_EXISTENT_LUN                    = R(0x01),
 181        TCM_UNSUPPORTED_SCSI_OPCODE             = R(0x02),
 182        TCM_INCORRECT_AMOUNT_OF_DATA            = R(0x03),
 183        TCM_UNEXPECTED_UNSOLICITED_DATA         = R(0x04),
 184        TCM_SERVICE_CRC_ERROR                   = R(0x05),
 185        TCM_SNACK_REJECTED                      = R(0x06),
 186        TCM_SECTOR_COUNT_TOO_MANY               = R(0x07),
 187        TCM_INVALID_CDB_FIELD                   = R(0x08),
 188        TCM_INVALID_PARAMETER_LIST              = R(0x09),
 189        TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE  = R(0x0a),
 190        TCM_UNKNOWN_MODE_PAGE                   = R(0x0b),
 191        TCM_WRITE_PROTECTED                     = R(0x0c),
 192        TCM_CHECK_CONDITION_ABORT_CMD           = R(0x0d),
 193        TCM_CHECK_CONDITION_UNIT_ATTENTION      = R(0x0e),
 194        TCM_CHECK_CONDITION_NOT_READY           = R(0x0f),
 195        TCM_RESERVATION_CONFLICT                = R(0x10),
 196        TCM_ADDRESS_OUT_OF_RANGE                = R(0x11),
 197        TCM_OUT_OF_RESOURCES                    = R(0x12),
 198        TCM_PARAMETER_LIST_LENGTH_ERROR         = R(0x13),
 199#undef R
 200};
 201
 202enum target_sc_flags_table {
 203        TARGET_SCF_BIDI_OP              = 0x01,
 204        TARGET_SCF_ACK_KREF             = 0x02,
 205        TARGET_SCF_UNKNOWN_SIZE         = 0x04,
 206};
 207
 208/* fabric independent task management function values */
 209enum tcm_tmreq_table {
 210        TMR_ABORT_TASK          = 1,
 211        TMR_ABORT_TASK_SET      = 2,
 212        TMR_CLEAR_ACA           = 3,
 213        TMR_CLEAR_TASK_SET      = 4,
 214        TMR_LUN_RESET           = 5,
 215        TMR_TARGET_WARM_RESET   = 6,
 216        TMR_TARGET_COLD_RESET   = 7,
 217};
 218
 219/* fabric independent task management response values */
 220enum tcm_tmrsp_table {
 221        TMR_FUNCTION_COMPLETE           = 0,
 222        TMR_TASK_DOES_NOT_EXIST         = 1,
 223        TMR_LUN_DOES_NOT_EXIST          = 2,
 224        TMR_TASK_STILL_ALLEGIANT        = 3,
 225        TMR_TASK_FAILOVER_NOT_SUPPORTED = 4,
 226        TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED    = 5,
 227        TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
 228        TMR_FUNCTION_REJECTED           = 255,
 229};
 230
 231/*
 232 * Used for target SCSI statistics
 233 */
 234typedef enum {
 235        SCSI_INST_INDEX,
 236        SCSI_DEVICE_INDEX,
 237        SCSI_AUTH_INTR_INDEX,
 238        SCSI_INDEX_TYPE_MAX
 239} scsi_index_t;
 240
 241struct se_cmd;
 242
 243struct t10_alua {
 244        /* ALUA Target Port Group ID */
 245        u16     alua_tg_pt_gps_counter;
 246        u32     alua_tg_pt_gps_count;
 247        spinlock_t tg_pt_gps_lock;
 248        struct se_device *t10_dev;
 249        /* Used for default ALUA Target Port Group */
 250        struct t10_alua_tg_pt_gp *default_tg_pt_gp;
 251        /* Used for default ALUA Target Port Group ConfigFS group */
 252        struct config_group alua_tg_pt_gps_group;
 253        struct list_head tg_pt_gps_list;
 254};
 255
 256struct t10_alua_lu_gp {
 257        u16     lu_gp_id;
 258        int     lu_gp_valid_id;
 259        u32     lu_gp_members;
 260        atomic_t lu_gp_ref_cnt;
 261        spinlock_t lu_gp_lock;
 262        struct config_group lu_gp_group;
 263        struct list_head lu_gp_node;
 264        struct list_head lu_gp_mem_list;
 265};
 266
 267struct t10_alua_lu_gp_member {
 268        bool lu_gp_assoc;
 269        atomic_t lu_gp_mem_ref_cnt;
 270        spinlock_t lu_gp_mem_lock;
 271        struct t10_alua_lu_gp *lu_gp;
 272        struct se_device *lu_gp_mem_dev;
 273        struct list_head lu_gp_mem_list;
 274};
 275
 276struct t10_alua_tg_pt_gp {
 277        u16     tg_pt_gp_id;
 278        int     tg_pt_gp_valid_id;
 279        int     tg_pt_gp_alua_access_status;
 280        int     tg_pt_gp_alua_access_type;
 281        int     tg_pt_gp_nonop_delay_msecs;
 282        int     tg_pt_gp_trans_delay_msecs;
 283        int     tg_pt_gp_implict_trans_secs;
 284        int     tg_pt_gp_pref;
 285        int     tg_pt_gp_write_metadata;
 286        /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
 287#define ALUA_MD_BUF_LEN                         1024
 288        u32     tg_pt_gp_md_buf_len;
 289        u32     tg_pt_gp_members;
 290        atomic_t tg_pt_gp_alua_access_state;
 291        atomic_t tg_pt_gp_ref_cnt;
 292        spinlock_t tg_pt_gp_lock;
 293        struct mutex tg_pt_gp_md_mutex;
 294        struct se_device *tg_pt_gp_dev;
 295        struct config_group tg_pt_gp_group;
 296        struct list_head tg_pt_gp_list;
 297        struct list_head tg_pt_gp_mem_list;
 298};
 299
 300struct t10_alua_tg_pt_gp_member {
 301        bool tg_pt_gp_assoc;
 302        atomic_t tg_pt_gp_mem_ref_cnt;
 303        spinlock_t tg_pt_gp_mem_lock;
 304        struct t10_alua_tg_pt_gp *tg_pt_gp;
 305        struct se_port *tg_pt;
 306        struct list_head tg_pt_gp_mem_list;
 307};
 308
 309struct t10_vpd {
 310        unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
 311        int protocol_identifier_set;
 312        u32 protocol_identifier;
 313        u32 device_identifier_code_set;
 314        u32 association;
 315        u32 device_identifier_type;
 316        struct list_head vpd_list;
 317};
 318
 319struct t10_wwn {
 320        char vendor[8];
 321        char model[16];
 322        char revision[4];
 323        char unit_serial[INQUIRY_VPD_SERIAL_LEN];
 324        spinlock_t t10_vpd_lock;
 325        struct se_device *t10_dev;
 326        struct config_group t10_wwn_group;
 327        struct list_head t10_vpd_list;
 328};
 329
 330struct t10_pr_registration {
 331        /* Used for fabrics that contain WWN+ISID */
 332#define PR_REG_ISID_LEN                         16
 333        /* PR_REG_ISID_LEN + ',i,0x' */
 334#define PR_REG_ISID_ID_LEN                      (PR_REG_ISID_LEN + 5)
 335        char pr_reg_isid[PR_REG_ISID_LEN];
 336        /* Used during APTPL metadata reading */
 337#define PR_APTPL_MAX_IPORT_LEN                  256
 338        unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
 339        /* Used during APTPL metadata reading */
 340#define PR_APTPL_MAX_TPORT_LEN                  256
 341        unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
 342        /* For writing out live meta data */
 343        unsigned char *pr_aptpl_buf;
 344        u16 pr_aptpl_rpti;
 345        u16 pr_reg_tpgt;
 346        /* Reservation effects all target ports */
 347        int pr_reg_all_tg_pt;
 348        /* Activate Persistence across Target Power Loss */
 349        int pr_reg_aptpl;
 350        int pr_res_holder;
 351        int pr_res_type;
 352        int pr_res_scope;
 353        /* Used for fabric initiator WWPNs using a ISID */
 354        bool isid_present_at_reg;
 355        u32 pr_res_mapped_lun;
 356        u32 pr_aptpl_target_lun;
 357        u32 pr_res_generation;
 358        u64 pr_reg_bin_isid;
 359        u64 pr_res_key;
 360        atomic_t pr_res_holders;
 361        struct se_node_acl *pr_reg_nacl;
 362        struct se_dev_entry *pr_reg_deve;
 363        struct se_lun *pr_reg_tg_pt_lun;
 364        struct list_head pr_reg_list;
 365        struct list_head pr_reg_abort_list;
 366        struct list_head pr_reg_aptpl_list;
 367        struct list_head pr_reg_atp_list;
 368        struct list_head pr_reg_atp_mem_list;
 369};
 370
 371struct t10_reservation {
 372        /* Reservation effects all target ports */
 373        int pr_all_tg_pt;
 374        /* Activate Persistence across Target Power Loss enabled
 375         * for SCSI device */
 376        int pr_aptpl_active;
 377        /* Used by struct t10_reservation->pr_aptpl_buf_len */
 378#define PR_APTPL_BUF_LEN                        8192
 379        u32 pr_aptpl_buf_len;
 380        u32 pr_generation;
 381        spinlock_t registration_lock;
 382        spinlock_t aptpl_reg_lock;
 383        /*
 384         * This will always be set by one individual I_T Nexus.
 385         * However with all_tg_pt=1, other I_T Nexus from the
 386         * same initiator can access PR reg/res info on a different
 387         * target port.
 388         *
 389         * There is also the 'All Registrants' case, where there is
 390         * a single *pr_res_holder of the reservation, but all
 391         * registrations are considered reservation holders.
 392         */
 393        struct se_node_acl *pr_res_holder;
 394        struct list_head registration_list;
 395        struct list_head aptpl_reg_list;
 396};
 397
 398struct se_tmr_req {
 399        /* Task Management function to be performed */
 400        u8                      function;
 401        /* Task Management response to send */
 402        u8                      response;
 403        int                     call_transport;
 404        /* Reference to ITT that Task Mgmt should be performed */
 405        u32                     ref_task_tag;
 406        void                    *fabric_tmr_ptr;
 407        struct se_cmd           *task_cmd;
 408        struct se_device        *tmr_dev;
 409        struct se_lun           *tmr_lun;
 410        struct list_head        tmr_list;
 411};
 412
 413struct se_cmd {
 414        /* SAM response code being sent to initiator */
 415        u8                      scsi_status;
 416        u8                      scsi_asc;
 417        u8                      scsi_ascq;
 418        u16                     scsi_sense_length;
 419        /* Delay for ALUA Active/NonOptimized state access in milliseconds */
 420        int                     alua_nonop_delay;
 421        /* See include/linux/dma-mapping.h */
 422        enum dma_data_direction data_direction;
 423        /* For SAM Task Attribute */
 424        int                     sam_task_attr;
 425        /* Transport protocol dependent state, see transport_state_table */
 426        enum transport_state_table t_state;
 427        /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
 428        unsigned                check_release:1;
 429        unsigned                cmd_wait_set:1;
 430        unsigned                unknown_data_length:1;
 431        /* See se_cmd_flags_table */
 432        u32                     se_cmd_flags;
 433        u32                     se_ordered_id;
 434        /* Total size in bytes associated with command */
 435        u32                     data_length;
 436        u32                     residual_count;
 437        u32                     orig_fe_lun;
 438        /* Persistent Reservation key */
 439        u64                     pr_res_key;
 440        /* Used for sense data */
 441        void                    *sense_buffer;
 442        struct list_head        se_delayed_node;
 443        struct list_head        se_lun_node;
 444        struct list_head        se_qf_node;
 445        struct se_device      *se_dev;
 446        struct se_dev_entry   *se_deve;
 447        struct se_lun           *se_lun;
 448        /* Only used for internal passthrough and legacy TCM fabric modules */
 449        struct se_session       *se_sess;
 450        struct se_tmr_req       *se_tmr_req;
 451        struct list_head        se_cmd_list;
 452        struct completion       cmd_wait_comp;
 453        struct kref             cmd_kref;
 454        struct target_core_fabric_ops *se_tfo;
 455        sense_reason_t          (*execute_cmd)(struct se_cmd *);
 456        void (*transport_complete_callback)(struct se_cmd *);
 457
 458        unsigned char           *t_task_cdb;
 459        unsigned char           __t_task_cdb[TCM_MAX_COMMAND_SIZE];
 460        unsigned long long      t_task_lba;
 461        atomic_t                t_fe_count;
 462        unsigned int            transport_state;
 463#define CMD_T_ABORTED           (1 << 0)
 464#define CMD_T_ACTIVE            (1 << 1)
 465#define CMD_T_COMPLETE          (1 << 2)
 466#define CMD_T_SENT              (1 << 4)
 467#define CMD_T_STOP              (1 << 5)
 468#define CMD_T_FAILED            (1 << 6)
 469#define CMD_T_LUN_STOP          (1 << 7)
 470#define CMD_T_LUN_FE_STOP       (1 << 8)
 471#define CMD_T_DEV_ACTIVE        (1 << 9)
 472#define CMD_T_REQUEST_STOP      (1 << 10)
 473#define CMD_T_BUSY              (1 << 11)
 474        spinlock_t              t_state_lock;
 475        struct completion       t_transport_stop_comp;
 476        struct completion       transport_lun_fe_stop_comp;
 477        struct completion       transport_lun_stop_comp;
 478
 479        struct work_struct      work;
 480
 481        struct scatterlist      *t_data_sg;
 482        unsigned int            t_data_nents;
 483        void                    *t_data_vmap;
 484        struct scatterlist      *t_bidi_data_sg;
 485        unsigned int            t_bidi_data_nents;
 486
 487        struct list_head        state_list;
 488        bool                    state_active;
 489
 490        /* old task stop completion, consider merging with some of the above */
 491        struct completion       task_stop_comp;
 492
 493        /* backend private data */
 494        void                    *priv;
 495};
 496
 497struct se_ua {
 498        u8                      ua_asc;
 499        u8                      ua_ascq;
 500        struct se_node_acl      *ua_nacl;
 501        struct list_head        ua_dev_list;
 502        struct list_head        ua_nacl_list;
 503};
 504
 505struct se_node_acl {
 506        char                    initiatorname[TRANSPORT_IQN_LEN];
 507        /* Used to signal demo mode created ACL, disabled by default */
 508        bool                    dynamic_node_acl;
 509        bool                    acl_stop:1;
 510        u32                     queue_depth;
 511        u32                     acl_index;
 512#define MAX_ACL_TAG_SIZE 64
 513        char                    acl_tag[MAX_ACL_TAG_SIZE];
 514        u64                     num_cmds;
 515        u64                     read_bytes;
 516        u64                     write_bytes;
 517        spinlock_t              stats_lock;
 518        /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
 519        atomic_t                acl_pr_ref_count;
 520        struct se_dev_entry     **device_list;
 521        struct se_session       *nacl_sess;
 522        struct se_portal_group *se_tpg;
 523        spinlock_t              device_list_lock;
 524        spinlock_t              nacl_sess_lock;
 525        struct config_group     acl_group;
 526        struct config_group     acl_attrib_group;
 527        struct config_group     acl_auth_group;
 528        struct config_group     acl_param_group;
 529        struct config_group     acl_fabric_stat_group;
 530        struct config_group     *acl_default_groups[5];
 531        struct list_head        acl_list;
 532        struct list_head        acl_sess_list;
 533        struct completion       acl_free_comp;
 534        struct kref             acl_kref;
 535};
 536
 537struct se_session {
 538        unsigned                sess_tearing_down:1;
 539        u64                     sess_bin_isid;
 540        struct se_node_acl      *se_node_acl;
 541        struct se_portal_group *se_tpg;
 542        void                    *fabric_sess_ptr;
 543        struct list_head        sess_list;
 544        struct list_head        sess_acl_list;
 545        struct list_head        sess_cmd_list;
 546        struct list_head        sess_wait_list;
 547        spinlock_t              sess_cmd_lock;
 548        struct kref             sess_kref;
 549};
 550
 551struct se_device;
 552struct se_transform_info;
 553struct scatterlist;
 554
 555struct se_ml_stat_grps {
 556        struct config_group     stat_group;
 557        struct config_group     scsi_auth_intr_group;
 558        struct config_group     scsi_att_intr_port_group;
 559};
 560
 561struct se_lun_acl {
 562        char                    initiatorname[TRANSPORT_IQN_LEN];
 563        u32                     mapped_lun;
 564        struct se_node_acl      *se_lun_nacl;
 565        struct se_lun           *se_lun;
 566        struct list_head        lacl_list;
 567        struct config_group     se_lun_group;
 568        struct se_ml_stat_grps  ml_stat_grps;
 569};
 570
 571struct se_dev_entry {
 572        bool                    def_pr_registered;
 573        /* See transport_lunflags_table */
 574        u32                     lun_flags;
 575        u32                     mapped_lun;
 576        u32                     total_cmds;
 577        u64                     pr_res_key;
 578        u64                     creation_time;
 579        u32                     attach_count;
 580        u64                     read_bytes;
 581        u64                     write_bytes;
 582        atomic_t                ua_count;
 583        /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
 584        atomic_t                pr_ref_count;
 585        struct se_lun_acl       *se_lun_acl;
 586        spinlock_t              ua_lock;
 587        struct se_lun           *se_lun;
 588        struct list_head        alua_port_list;
 589        struct list_head        ua_list;
 590};
 591
 592struct se_dev_attrib {
 593        int             emulate_model_alias;
 594        int             emulate_dpo;
 595        int             emulate_fua_write;
 596        int             emulate_fua_read;
 597        int             emulate_write_cache;
 598        int             emulate_ua_intlck_ctrl;
 599        int             emulate_tas;
 600        int             emulate_tpu;
 601        int             emulate_tpws;
 602        int             enforce_pr_isids;
 603        int             is_nonrot;
 604        int             emulate_rest_reord;
 605        u32             hw_block_size;
 606        u32             block_size;
 607        u32             hw_max_sectors;
 608        u32             fabric_max_sectors;
 609        u32             optimal_sectors;
 610        u32             hw_queue_depth;
 611        u32             queue_depth;
 612        u32             max_unmap_lba_count;
 613        u32             max_unmap_block_desc_count;
 614        u32             unmap_granularity;
 615        u32             unmap_granularity_alignment;
 616        u32             max_write_same_len;
 617        struct se_device *da_dev;
 618        struct config_group da_group;
 619};
 620
 621struct se_dev_stat_grps {
 622        struct config_group stat_group;
 623        struct config_group scsi_dev_group;
 624        struct config_group scsi_tgt_dev_group;
 625        struct config_group scsi_lu_group;
 626};
 627
 628struct se_device {
 629#define SE_DEV_LINK_MAGIC                       0xfeeddeef
 630        u32                     dev_link_magic;
 631        /* RELATIVE TARGET PORT IDENTIFER Counter */
 632        u16                     dev_rpti_counter;
 633        /* Used for SAM Task Attribute ordering */
 634        u32                     dev_cur_ordered_id;
 635        u32                     dev_flags;
 636#define DF_CONFIGURED                           0x00000001
 637#define DF_FIRMWARE_VPD_UNIT_SERIAL             0x00000002
 638#define DF_EMULATED_VPD_UNIT_SERIAL             0x00000004
 639#define DF_USING_UDEV_PATH                      0x00000008
 640#define DF_USING_ALIAS                          0x00000010
 641        u32                     dev_port_count;
 642        /* Physical device queue depth */
 643        u32                     queue_depth;
 644        /* Used for SPC-2 reservations enforce of ISIDs */
 645        u64                     dev_res_bin_isid;
 646        /* Pointer to transport specific device structure */
 647        u32                     dev_index;
 648        u64                     creation_time;
 649        u32                     num_resets;
 650        u64                     num_cmds;
 651        u64                     read_bytes;
 652        u64                     write_bytes;
 653        spinlock_t              stats_lock;
 654        /* Active commands on this virtual SE device */
 655        atomic_t                simple_cmds;
 656        atomic_t                dev_ordered_id;
 657        atomic_t                dev_ordered_sync;
 658        atomic_t                dev_qf_count;
 659        int                     export_count;
 660        spinlock_t              delayed_cmd_lock;
 661        spinlock_t              execute_task_lock;
 662        spinlock_t              dev_reservation_lock;
 663        unsigned int            dev_reservation_flags;
 664#define DRF_SPC2_RESERVATIONS                   0x00000001
 665#define DRF_SPC2_RESERVATIONS_WITH_ISID         0x00000002
 666        spinlock_t              se_port_lock;
 667        spinlock_t              se_tmr_lock;
 668        spinlock_t              qf_cmd_lock;
 669        /* Used for legacy SPC-2 reservationsa */
 670        struct se_node_acl      *dev_reserved_node_acl;
 671        /* Used for ALUA Logical Unit Group membership */
 672        struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
 673        /* Used for SPC-3 Persistent Reservations */
 674        struct t10_pr_registration *dev_pr_res_holder;
 675        struct list_head        dev_sep_list;
 676        struct list_head        dev_tmr_list;
 677        struct workqueue_struct *tmr_wq;
 678        struct work_struct      qf_work_queue;
 679        struct list_head        delayed_cmd_list;
 680        struct list_head        state_list;
 681        struct list_head        qf_cmd_list;
 682        /* Pointer to associated SE HBA */
 683        struct se_hba           *se_hba;
 684        /* T10 Inquiry and VPD WWN Information */
 685        struct t10_wwn          t10_wwn;
 686        /* T10 Asymmetric Logical Unit Assignment for Target Ports */
 687        struct t10_alua         t10_alua;
 688        /* T10 SPC-2 + SPC-3 Reservations */
 689        struct t10_reservation  t10_pr;
 690        struct se_dev_attrib    dev_attrib;
 691        struct config_group     dev_group;
 692        struct config_group     dev_pr_group;
 693        struct se_dev_stat_grps dev_stat_grps;
 694#define SE_DEV_ALIAS_LEN 512            /* must be less than PAGE_SIZE */
 695        unsigned char           dev_alias[SE_DEV_ALIAS_LEN];
 696#define SE_UDEV_PATH_LEN 512            /* must be less than PAGE_SIZE */
 697        unsigned char           udev_path[SE_UDEV_PATH_LEN];
 698        /* Pointer to template of function pointers for transport */
 699        struct se_subsystem_api *transport;
 700        /* Linked list for struct se_hba struct se_device list */
 701        struct list_head        dev_list;
 702};
 703
 704struct se_hba {
 705        u16                     hba_tpgt;
 706        u32                     hba_id;
 707        /* See hba_flags_table */
 708        u32                     hba_flags;
 709        /* Virtual iSCSI devices attached. */
 710        u32                     dev_count;
 711        u32                     hba_index;
 712        /* Pointer to transport specific host structure. */
 713        void                    *hba_ptr;
 714        struct list_head        hba_node;
 715        spinlock_t              device_lock;
 716        struct config_group     hba_group;
 717        struct mutex            hba_access_mutex;
 718        struct se_subsystem_api *transport;
 719};
 720
 721struct se_port_stat_grps {
 722        struct config_group stat_group;
 723        struct config_group scsi_port_group;
 724        struct config_group scsi_tgt_port_group;
 725        struct config_group scsi_transport_group;
 726};
 727
 728struct se_lun {
 729#define SE_LUN_LINK_MAGIC                       0xffff7771
 730        u32                     lun_link_magic;
 731        /* See transport_lun_status_table */
 732        enum transport_lun_status_table lun_status;
 733        u32                     lun_access;
 734        u32                     lun_flags;
 735        u32                     unpacked_lun;
 736        atomic_t                lun_acl_count;
 737        spinlock_t              lun_acl_lock;
 738        spinlock_t              lun_cmd_lock;
 739        spinlock_t              lun_sep_lock;
 740        struct completion       lun_shutdown_comp;
 741        struct list_head        lun_cmd_list;
 742        struct list_head        lun_acl_list;
 743        struct se_device        *lun_se_dev;
 744        struct se_port          *lun_sep;
 745        struct config_group     lun_group;
 746        struct se_port_stat_grps port_stat_grps;
 747};
 748
 749struct scsi_port_stats {
 750       u64     cmd_pdus;
 751       u64     tx_data_octets;
 752       u64     rx_data_octets;
 753};
 754
 755struct se_port {
 756        /* RELATIVE TARGET PORT IDENTIFER */
 757        u16             sep_rtpi;
 758        int             sep_tg_pt_secondary_stat;
 759        int             sep_tg_pt_secondary_write_md;
 760        u32             sep_index;
 761        struct scsi_port_stats sep_stats;
 762        /* Used for ALUA Target Port Groups membership */
 763        atomic_t        sep_tg_pt_secondary_offline;
 764        /* Used for PR ALL_TG_PT=1 */
 765        atomic_t        sep_tg_pt_ref_cnt;
 766        spinlock_t      sep_alua_lock;
 767        struct mutex    sep_tg_pt_md_mutex;
 768        struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
 769        struct se_lun *sep_lun;
 770        struct se_portal_group *sep_tpg;
 771        struct list_head sep_alua_list;
 772        struct list_head sep_list;
 773};
 774
 775struct se_tpg_np {
 776        struct se_portal_group *tpg_np_parent;
 777        struct config_group     tpg_np_group;
 778};
 779
 780struct se_portal_group {
 781        /* Type of target portal group, see transport_tpg_type_table */
 782        enum transport_tpg_type_table se_tpg_type;
 783        /* Number of ACLed Initiator Nodes for this TPG */
 784        u32                     num_node_acls;
 785        /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
 786        atomic_t                tpg_pr_ref_count;
 787        /* Spinlock for adding/removing ACLed Nodes */
 788        spinlock_t              acl_node_lock;
 789        /* Spinlock for adding/removing sessions */
 790        spinlock_t              session_lock;
 791        spinlock_t              tpg_lun_lock;
 792        /* Pointer to $FABRIC_MOD portal group */
 793        void                    *se_tpg_fabric_ptr;
 794        struct list_head        se_tpg_node;
 795        /* linked list for initiator ACL list */
 796        struct list_head        acl_node_list;
 797        struct se_lun           **tpg_lun_list;
 798        struct se_lun           tpg_virt_lun0;
 799        /* List of TCM sessions associated wth this TPG */
 800        struct list_head        tpg_sess_list;
 801        /* Pointer to $FABRIC_MOD dependent code */
 802        struct target_core_fabric_ops *se_tpg_tfo;
 803        struct se_wwn           *se_tpg_wwn;
 804        struct config_group     tpg_group;
 805        struct config_group     *tpg_default_groups[6];
 806        struct config_group     tpg_lun_group;
 807        struct config_group     tpg_np_group;
 808        struct config_group     tpg_acl_group;
 809        struct config_group     tpg_attrib_group;
 810        struct config_group     tpg_param_group;
 811};
 812
 813struct se_wwn {
 814        struct target_fabric_configfs *wwn_tf;
 815        struct config_group     wwn_group;
 816        struct config_group     *wwn_default_groups[2];
 817        struct config_group     fabric_stat_group;
 818};
 819
 820#endif /* TARGET_CORE_BASE_H */
 821
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.