Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 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> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 11 | |
Nicholas Bellinger | 15fb48c | 2011-03-14 04:06:10 -0700 | [diff] [blame] | 12 | #define TARGET_CORE_MOD_VERSION "v4.0.0-rc7-ml" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 13 | #define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT)) |
| 14 | |
| 15 | /* Used by transport_generic_allocate_iovecs() */ |
| 16 | #define TRANSPORT_IOV_DATA_BUFFER 5 |
| 17 | /* Maximum Number of LUNs per Target Portal Group */ |
| 18 | #define TRANSPORT_MAX_LUNS_PER_TPG 256 |
| 19 | /* |
| 20 | * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. |
| 21 | * |
| 22 | * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and |
| 23 | * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use |
| 24 | * 16-byte CDBs by default and require an extra allocation for |
| 25 | * 32-byte CDBs to becasue of legacy issues. |
| 26 | * |
| 27 | * Within TCM Core there are no such legacy limitiations, so we go ahead |
| 28 | * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() |
| 29 | * within all TCM Core and subsystem plugin code. |
| 30 | */ |
| 31 | #define TCM_MAX_COMMAND_SIZE 32 |
| 32 | /* |
| 33 | * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently |
| 34 | * defined 96, but the real limit is 252 (or 260 including the header) |
| 35 | */ |
| 36 | #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE |
| 37 | /* Used by transport_send_check_condition_and_sense() */ |
| 38 | #define SPC_SENSE_KEY_OFFSET 2 |
| 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 128 |
| 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 | /* struct se_hba->hba_flags */ |
| 59 | enum hba_flags_table { |
| 60 | HBA_FLAGS_INTERNAL_USE = 0x01, |
| 61 | HBA_FLAGS_PSCSI_MODE = 0x02, |
| 62 | }; |
| 63 | |
| 64 | /* struct se_lun->lun_status */ |
| 65 | enum transport_lun_status_table { |
| 66 | TRANSPORT_LUN_STATUS_FREE = 0, |
| 67 | TRANSPORT_LUN_STATUS_ACTIVE = 1, |
| 68 | }; |
| 69 | |
| 70 | /* struct se_portal_group->se_tpg_type */ |
| 71 | enum transport_tpg_type_table { |
| 72 | TRANSPORT_TPG_TYPE_NORMAL = 0, |
| 73 | TRANSPORT_TPG_TYPE_DISCOVERY = 1, |
| 74 | }; |
| 75 | |
| 76 | /* Used for generate timer flags */ |
| 77 | enum timer_flags_table { |
| 78 | TF_RUNNING = 0x01, |
| 79 | TF_STOP = 0x02, |
| 80 | }; |
| 81 | |
| 82 | /* Special transport agnostic struct se_cmd->t_states */ |
| 83 | enum transport_state_table { |
| 84 | TRANSPORT_NO_STATE = 0, |
| 85 | TRANSPORT_NEW_CMD = 1, |
| 86 | TRANSPORT_DEFERRED_CMD = 2, |
| 87 | TRANSPORT_WRITE_PENDING = 3, |
| 88 | TRANSPORT_PROCESS_WRITE = 4, |
| 89 | TRANSPORT_PROCESSING = 5, |
| 90 | TRANSPORT_COMPLETE_OK = 6, |
| 91 | TRANSPORT_COMPLETE_FAILURE = 7, |
| 92 | TRANSPORT_COMPLETE_TIMEOUT = 8, |
| 93 | TRANSPORT_PROCESS_TMR = 9, |
| 94 | TRANSPORT_TMR_COMPLETE = 10, |
| 95 | TRANSPORT_ISTATE_PROCESSING = 11, |
| 96 | TRANSPORT_ISTATE_PROCESSED = 12, |
| 97 | TRANSPORT_KILL = 13, |
| 98 | TRANSPORT_REMOVE = 14, |
| 99 | TRANSPORT_FREE = 15, |
| 100 | TRANSPORT_NEW_CMD_MAP = 16, |
| 101 | }; |
| 102 | |
| 103 | /* Used for struct se_cmd->se_cmd_flags */ |
| 104 | enum se_cmd_flags_table { |
| 105 | SCF_SUPPORTED_SAM_OPCODE = 0x00000001, |
| 106 | SCF_TRANSPORT_TASK_SENSE = 0x00000002, |
| 107 | SCF_EMULATED_TASK_SENSE = 0x00000004, |
| 108 | SCF_SCSI_DATA_SG_IO_CDB = 0x00000008, |
| 109 | SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010, |
| 110 | SCF_SCSI_CONTROL_NONSG_IO_CDB = 0x00000020, |
| 111 | SCF_SCSI_NON_DATA_CDB = 0x00000040, |
| 112 | SCF_SCSI_CDB_EXCEPTION = 0x00000080, |
| 113 | SCF_SCSI_RESERVATION_CONFLICT = 0x00000100, |
| 114 | SCF_CMD_PASSTHROUGH_NOALLOC = 0x00000200, |
| 115 | SCF_SE_CMD_FAILED = 0x00000400, |
| 116 | SCF_SE_LUN_CMD = 0x00000800, |
| 117 | SCF_SE_ALLOW_EOO = 0x00001000, |
| 118 | SCF_SE_DISABLE_ONLINE_CHECK = 0x00002000, |
| 119 | SCF_SENT_CHECK_CONDITION = 0x00004000, |
| 120 | SCF_OVERFLOW_BIT = 0x00008000, |
| 121 | SCF_UNDERFLOW_BIT = 0x00010000, |
| 122 | SCF_SENT_DELAYED_TAS = 0x00020000, |
| 123 | SCF_ALUA_NON_OPTIMIZED = 0x00040000, |
| 124 | SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000, |
| 125 | SCF_PASSTHROUGH_SG_TO_MEM = 0x00100000, |
| 126 | SCF_PASSTHROUGH_CONTIG_TO_SG = 0x00200000, |
| 127 | SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000, |
| 128 | SCF_EMULATE_SYNC_CACHE = 0x00800000, |
| 129 | SCF_EMULATE_CDB_ASYNC = 0x01000000, |
| 130 | SCF_EMULATE_SYNC_UNMAP = 0x02000000 |
| 131 | }; |
| 132 | |
| 133 | /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ |
| 134 | enum transport_lunflags_table { |
| 135 | TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, |
| 136 | TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, |
| 137 | TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, |
| 138 | TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, |
| 139 | }; |
| 140 | |
| 141 | /* struct se_device->dev_status */ |
| 142 | enum transport_device_status_table { |
| 143 | TRANSPORT_DEVICE_ACTIVATED = 0x01, |
| 144 | TRANSPORT_DEVICE_DEACTIVATED = 0x02, |
| 145 | TRANSPORT_DEVICE_QUEUE_FULL = 0x04, |
| 146 | TRANSPORT_DEVICE_SHUTDOWN = 0x08, |
| 147 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10, |
| 148 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20, |
| 149 | }; |
| 150 | |
| 151 | /* |
| 152 | * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason |
| 153 | * to signal which ASC/ASCQ sense payload should be built. |
| 154 | */ |
| 155 | enum tcm_sense_reason_table { |
| 156 | TCM_NON_EXISTENT_LUN = 0x01, |
| 157 | TCM_UNSUPPORTED_SCSI_OPCODE = 0x02, |
| 158 | TCM_INCORRECT_AMOUNT_OF_DATA = 0x03, |
| 159 | TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04, |
| 160 | TCM_SERVICE_CRC_ERROR = 0x05, |
| 161 | TCM_SNACK_REJECTED = 0x06, |
| 162 | TCM_SECTOR_COUNT_TOO_MANY = 0x07, |
| 163 | TCM_INVALID_CDB_FIELD = 0x08, |
| 164 | TCM_INVALID_PARAMETER_LIST = 0x09, |
| 165 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a, |
| 166 | TCM_UNKNOWN_MODE_PAGE = 0x0b, |
| 167 | TCM_WRITE_PROTECTED = 0x0c, |
| 168 | TCM_CHECK_CONDITION_ABORT_CMD = 0x0d, |
| 169 | TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e, |
| 170 | TCM_CHECK_CONDITION_NOT_READY = 0x0f, |
| 171 | }; |
| 172 | |
| 173 | struct se_obj { |
| 174 | atomic_t obj_access_count; |
| 175 | } ____cacheline_aligned; |
| 176 | |
| 177 | /* |
| 178 | * Used by TCM Core internally to signal if ALUA emulation is enabled or |
| 179 | * disabled, or running in with TCM/pSCSI passthrough mode |
| 180 | */ |
| 181 | typedef enum { |
| 182 | SPC_ALUA_PASSTHROUGH, |
| 183 | SPC2_ALUA_DISABLED, |
| 184 | SPC3_ALUA_EMULATED |
| 185 | } t10_alua_index_t; |
| 186 | |
| 187 | /* |
| 188 | * Used by TCM Core internally to signal if SAM Task Attribute emulation |
| 189 | * is enabled or disabled, or running in with TCM/pSCSI passthrough mode |
| 190 | */ |
| 191 | typedef enum { |
| 192 | SAM_TASK_ATTR_PASSTHROUGH, |
| 193 | SAM_TASK_ATTR_UNTAGGED, |
| 194 | SAM_TASK_ATTR_EMULATED |
| 195 | } t10_task_attr_index_t; |
| 196 | |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 197 | /* |
| 198 | * Used for target SCSI statistics |
| 199 | */ |
| 200 | typedef enum { |
| 201 | SCSI_INST_INDEX, |
| 202 | SCSI_DEVICE_INDEX, |
| 203 | SCSI_AUTH_INTR_INDEX, |
| 204 | SCSI_INDEX_TYPE_MAX |
| 205 | } scsi_index_t; |
| 206 | |
| 207 | struct scsi_index_table { |
| 208 | spinlock_t lock; |
| 209 | u32 scsi_mib_index[SCSI_INDEX_TYPE_MAX]; |
| 210 | } ____cacheline_aligned; |
| 211 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 212 | struct se_cmd; |
| 213 | |
| 214 | struct t10_alua { |
| 215 | t10_alua_index_t alua_type; |
| 216 | /* ALUA Target Port Group ID */ |
| 217 | u16 alua_tg_pt_gps_counter; |
| 218 | u32 alua_tg_pt_gps_count; |
| 219 | spinlock_t tg_pt_gps_lock; |
| 220 | struct se_subsystem_dev *t10_sub_dev; |
| 221 | /* Used for default ALUA Target Port Group */ |
| 222 | struct t10_alua_tg_pt_gp *default_tg_pt_gp; |
| 223 | /* Used for default ALUA Target Port Group ConfigFS group */ |
| 224 | struct config_group alua_tg_pt_gps_group; |
| 225 | int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *); |
| 226 | struct list_head tg_pt_gps_list; |
| 227 | } ____cacheline_aligned; |
| 228 | |
| 229 | struct t10_alua_lu_gp { |
| 230 | u16 lu_gp_id; |
| 231 | int lu_gp_valid_id; |
| 232 | u32 lu_gp_members; |
| 233 | atomic_t lu_gp_shutdown; |
| 234 | atomic_t lu_gp_ref_cnt; |
| 235 | spinlock_t lu_gp_lock; |
| 236 | struct config_group lu_gp_group; |
| 237 | struct list_head lu_gp_list; |
| 238 | struct list_head lu_gp_mem_list; |
| 239 | } ____cacheline_aligned; |
| 240 | |
| 241 | struct t10_alua_lu_gp_member { |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 242 | bool lu_gp_assoc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 243 | atomic_t lu_gp_mem_ref_cnt; |
| 244 | spinlock_t lu_gp_mem_lock; |
| 245 | struct t10_alua_lu_gp *lu_gp; |
| 246 | struct se_device *lu_gp_mem_dev; |
| 247 | struct list_head lu_gp_mem_list; |
| 248 | } ____cacheline_aligned; |
| 249 | |
| 250 | struct t10_alua_tg_pt_gp { |
| 251 | u16 tg_pt_gp_id; |
| 252 | int tg_pt_gp_valid_id; |
| 253 | int tg_pt_gp_alua_access_status; |
| 254 | int tg_pt_gp_alua_access_type; |
| 255 | int tg_pt_gp_nonop_delay_msecs; |
| 256 | int tg_pt_gp_trans_delay_msecs; |
| 257 | int tg_pt_gp_pref; |
| 258 | int tg_pt_gp_write_metadata; |
| 259 | /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ |
| 260 | #define ALUA_MD_BUF_LEN 1024 |
| 261 | u32 tg_pt_gp_md_buf_len; |
| 262 | u32 tg_pt_gp_members; |
| 263 | atomic_t tg_pt_gp_alua_access_state; |
| 264 | atomic_t tg_pt_gp_ref_cnt; |
| 265 | spinlock_t tg_pt_gp_lock; |
| 266 | struct mutex tg_pt_gp_md_mutex; |
| 267 | struct se_subsystem_dev *tg_pt_gp_su_dev; |
| 268 | struct config_group tg_pt_gp_group; |
| 269 | struct list_head tg_pt_gp_list; |
| 270 | struct list_head tg_pt_gp_mem_list; |
| 271 | } ____cacheline_aligned; |
| 272 | |
| 273 | struct t10_alua_tg_pt_gp_member { |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 274 | bool tg_pt_gp_assoc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 275 | atomic_t tg_pt_gp_mem_ref_cnt; |
| 276 | spinlock_t tg_pt_gp_mem_lock; |
| 277 | struct t10_alua_tg_pt_gp *tg_pt_gp; |
| 278 | struct se_port *tg_pt; |
| 279 | struct list_head tg_pt_gp_mem_list; |
| 280 | } ____cacheline_aligned; |
| 281 | |
| 282 | struct t10_vpd { |
| 283 | unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; |
| 284 | int protocol_identifier_set; |
| 285 | u32 protocol_identifier; |
| 286 | u32 device_identifier_code_set; |
| 287 | u32 association; |
| 288 | u32 device_identifier_type; |
| 289 | struct list_head vpd_list; |
| 290 | } ____cacheline_aligned; |
| 291 | |
| 292 | struct t10_wwn { |
| 293 | unsigned char vendor[8]; |
| 294 | unsigned char model[16]; |
| 295 | unsigned char revision[4]; |
| 296 | unsigned char unit_serial[INQUIRY_VPD_SERIAL_LEN]; |
| 297 | spinlock_t t10_vpd_lock; |
| 298 | struct se_subsystem_dev *t10_sub_dev; |
| 299 | struct config_group t10_wwn_group; |
| 300 | struct list_head t10_vpd_list; |
| 301 | } ____cacheline_aligned; |
| 302 | |
| 303 | |
| 304 | /* |
| 305 | * Used by TCM Core internally to signal if >= SPC-3 peristent reservations |
| 306 | * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough |
| 307 | * mode |
| 308 | */ |
| 309 | typedef enum { |
| 310 | SPC_PASSTHROUGH, |
| 311 | SPC2_RESERVATIONS, |
| 312 | SPC3_PERSISTENT_RESERVATIONS |
| 313 | } t10_reservations_index_t; |
| 314 | |
| 315 | struct t10_pr_registration { |
| 316 | /* Used for fabrics that contain WWN+ISID */ |
| 317 | #define PR_REG_ISID_LEN 16 |
| 318 | /* PR_REG_ISID_LEN + ',i,0x' */ |
| 319 | #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) |
| 320 | char pr_reg_isid[PR_REG_ISID_LEN]; |
| 321 | /* Used during APTPL metadata reading */ |
| 322 | #define PR_APTPL_MAX_IPORT_LEN 256 |
| 323 | unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; |
| 324 | /* Used during APTPL metadata reading */ |
| 325 | #define PR_APTPL_MAX_TPORT_LEN 256 |
| 326 | unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; |
| 327 | /* For writing out live meta data */ |
| 328 | unsigned char *pr_aptpl_buf; |
| 329 | u16 pr_aptpl_rpti; |
| 330 | u16 pr_reg_tpgt; |
| 331 | /* Reservation effects all target ports */ |
| 332 | int pr_reg_all_tg_pt; |
| 333 | /* Activate Persistence across Target Power Loss */ |
| 334 | int pr_reg_aptpl; |
| 335 | int pr_res_holder; |
| 336 | int pr_res_type; |
| 337 | int pr_res_scope; |
| 338 | /* Used for fabric initiator WWPNs using a ISID */ |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 339 | bool isid_present_at_reg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 340 | u32 pr_res_mapped_lun; |
| 341 | u32 pr_aptpl_target_lun; |
| 342 | u32 pr_res_generation; |
| 343 | u64 pr_reg_bin_isid; |
| 344 | u64 pr_res_key; |
| 345 | atomic_t pr_res_holders; |
| 346 | struct se_node_acl *pr_reg_nacl; |
| 347 | struct se_dev_entry *pr_reg_deve; |
| 348 | struct se_lun *pr_reg_tg_pt_lun; |
| 349 | struct list_head pr_reg_list; |
| 350 | struct list_head pr_reg_abort_list; |
| 351 | struct list_head pr_reg_aptpl_list; |
| 352 | struct list_head pr_reg_atp_list; |
| 353 | struct list_head pr_reg_atp_mem_list; |
| 354 | } ____cacheline_aligned; |
| 355 | |
| 356 | /* |
| 357 | * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS, |
| 358 | * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c: |
| 359 | * core_setup_reservations() |
| 360 | */ |
| 361 | struct t10_reservation_ops { |
| 362 | int (*t10_reservation_check)(struct se_cmd *, u32 *); |
| 363 | int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32); |
| 364 | int (*t10_pr_register)(struct se_cmd *); |
| 365 | int (*t10_pr_clear)(struct se_cmd *); |
| 366 | }; |
| 367 | |
| 368 | struct t10_reservation_template { |
| 369 | /* Reservation effects all target ports */ |
| 370 | int pr_all_tg_pt; |
| 371 | /* Activate Persistence across Target Power Loss enabled |
| 372 | * for SCSI device */ |
| 373 | int pr_aptpl_active; |
| 374 | /* Used by struct t10_reservation_template->pr_aptpl_buf_len */ |
| 375 | #define PR_APTPL_BUF_LEN 8192 |
| 376 | u32 pr_aptpl_buf_len; |
| 377 | u32 pr_generation; |
| 378 | t10_reservations_index_t res_type; |
| 379 | spinlock_t registration_lock; |
| 380 | spinlock_t aptpl_reg_lock; |
| 381 | /* |
| 382 | * This will always be set by one individual I_T Nexus. |
| 383 | * However with all_tg_pt=1, other I_T Nexus from the |
| 384 | * same initiator can access PR reg/res info on a different |
| 385 | * target port. |
| 386 | * |
| 387 | * There is also the 'All Registrants' case, where there is |
| 388 | * a single *pr_res_holder of the reservation, but all |
| 389 | * registrations are considered reservation holders. |
| 390 | */ |
| 391 | struct se_node_acl *pr_res_holder; |
| 392 | struct list_head registration_list; |
| 393 | struct list_head aptpl_reg_list; |
| 394 | struct t10_reservation_ops pr_ops; |
| 395 | } ____cacheline_aligned; |
| 396 | |
| 397 | struct se_queue_req { |
| 398 | int state; |
| 399 | void *cmd; |
| 400 | struct list_head qr_list; |
| 401 | } ____cacheline_aligned; |
| 402 | |
| 403 | struct se_queue_obj { |
| 404 | atomic_t queue_cnt; |
| 405 | spinlock_t cmd_queue_lock; |
| 406 | struct list_head qobj_list; |
| 407 | wait_queue_head_t thread_wq; |
| 408 | } ____cacheline_aligned; |
| 409 | |
| 410 | /* |
| 411 | * Used one per struct se_cmd to hold all extra struct se_task |
| 412 | * metadata. This structure is setup and allocated in |
| 413 | * drivers/target/target_core_transport.c:__transport_alloc_se_cmd() |
| 414 | */ |
| 415 | struct se_transport_task { |
| 416 | unsigned char *t_task_cdb; |
| 417 | unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; |
| 418 | unsigned long long t_task_lba; |
| 419 | int t_tasks_failed; |
| 420 | int t_tasks_fua; |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 421 | bool t_tasks_bidi; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 422 | u32 t_task_cdbs; |
| 423 | u32 t_tasks_check; |
| 424 | u32 t_tasks_no; |
| 425 | u32 t_tasks_sectors; |
| 426 | u32 t_tasks_se_num; |
| 427 | u32 t_tasks_se_bidi_num; |
| 428 | u32 t_tasks_sg_chained_no; |
| 429 | atomic_t t_fe_count; |
| 430 | atomic_t t_se_count; |
| 431 | atomic_t t_task_cdbs_left; |
| 432 | atomic_t t_task_cdbs_ex_left; |
| 433 | atomic_t t_task_cdbs_timeout_left; |
| 434 | atomic_t t_task_cdbs_sent; |
| 435 | atomic_t t_transport_aborted; |
| 436 | atomic_t t_transport_active; |
| 437 | atomic_t t_transport_complete; |
| 438 | atomic_t t_transport_queue_active; |
| 439 | atomic_t t_transport_sent; |
| 440 | atomic_t t_transport_stop; |
| 441 | atomic_t t_transport_timeout; |
| 442 | atomic_t transport_dev_active; |
| 443 | atomic_t transport_lun_active; |
| 444 | atomic_t transport_lun_fe_stop; |
| 445 | atomic_t transport_lun_stop; |
| 446 | spinlock_t t_state_lock; |
| 447 | struct completion t_transport_stop_comp; |
| 448 | struct completion transport_lun_fe_stop_comp; |
| 449 | struct completion transport_lun_stop_comp; |
| 450 | struct scatterlist *t_tasks_sg_chained; |
| 451 | struct scatterlist t_tasks_sg_bounce; |
| 452 | void *t_task_buf; |
| 453 | /* |
| 454 | * Used for pre-registered fabric SGL passthrough WRITE and READ |
| 455 | * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop |
| 456 | * and other HW target mode fabric modules. |
| 457 | */ |
| 458 | struct scatterlist *t_task_pt_sgl; |
| 459 | struct list_head *t_mem_list; |
| 460 | /* Used for BIDI READ */ |
| 461 | struct list_head *t_mem_bidi_list; |
| 462 | struct list_head t_task_list; |
| 463 | } ____cacheline_aligned; |
| 464 | |
| 465 | struct se_task { |
| 466 | unsigned char task_sense; |
| 467 | struct scatterlist *task_sg; |
| 468 | struct scatterlist *task_sg_bidi; |
| 469 | u8 task_scsi_status; |
| 470 | u8 task_flags; |
| 471 | int task_error_status; |
| 472 | int task_state_flags; |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 473 | bool task_padded_sg; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 474 | unsigned long long task_lba; |
| 475 | u32 task_no; |
| 476 | u32 task_sectors; |
| 477 | u32 task_size; |
| 478 | u32 task_sg_num; |
| 479 | u32 task_sg_offset; |
| 480 | enum dma_data_direction task_data_direction; |
| 481 | struct se_cmd *task_se_cmd; |
| 482 | struct se_device *se_dev; |
| 483 | struct completion task_stop_comp; |
| 484 | atomic_t task_active; |
| 485 | atomic_t task_execute_queue; |
| 486 | atomic_t task_timeout; |
| 487 | atomic_t task_sent; |
| 488 | atomic_t task_stop; |
| 489 | atomic_t task_state_active; |
| 490 | struct timer_list task_timer; |
| 491 | struct se_device *se_obj_ptr; |
| 492 | struct list_head t_list; |
| 493 | struct list_head t_execute_list; |
| 494 | struct list_head t_state_list; |
| 495 | } ____cacheline_aligned; |
| 496 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 497 | #define TASK_CMD(task) ((task)->task_se_cmd) |
| 498 | #define TASK_DEV(task) ((task)->se_dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 499 | |
| 500 | struct se_cmd { |
| 501 | /* SAM response code being sent to initiator */ |
| 502 | u8 scsi_status; |
| 503 | u8 scsi_asc; |
| 504 | u8 scsi_ascq; |
| 505 | u8 scsi_sense_reason; |
| 506 | u16 scsi_sense_length; |
| 507 | /* Delay for ALUA Active/NonOptimized state access in milliseconds */ |
| 508 | int alua_nonop_delay; |
| 509 | /* See include/linux/dma-mapping.h */ |
| 510 | enum dma_data_direction data_direction; |
| 511 | /* For SAM Task Attribute */ |
| 512 | int sam_task_attr; |
| 513 | /* Transport protocol dependent state, see transport_state_table */ |
| 514 | enum transport_state_table t_state; |
| 515 | /* Transport protocol dependent state for out of order CmdSNs */ |
| 516 | int deferred_t_state; |
| 517 | /* Transport specific error status */ |
| 518 | int transport_error_status; |
| 519 | /* See se_cmd_flags_table */ |
| 520 | u32 se_cmd_flags; |
| 521 | u32 se_ordered_id; |
| 522 | /* Total size in bytes associated with command */ |
| 523 | u32 data_length; |
| 524 | /* SCSI Presented Data Transfer Length */ |
| 525 | u32 cmd_spdtl; |
| 526 | u32 residual_count; |
| 527 | u32 orig_fe_lun; |
| 528 | /* Persistent Reservation key */ |
| 529 | u64 pr_res_key; |
| 530 | atomic_t transport_sent; |
| 531 | /* Used for sense data */ |
| 532 | void *sense_buffer; |
| 533 | struct list_head se_delayed_list; |
| 534 | struct list_head se_ordered_list; |
| 535 | struct list_head se_lun_list; |
| 536 | struct se_device *se_dev; |
| 537 | struct se_dev_entry *se_deve; |
| 538 | struct se_device *se_obj_ptr; |
| 539 | struct se_device *se_orig_obj_ptr; |
| 540 | struct se_lun *se_lun; |
| 541 | /* Only used for internal passthrough and legacy TCM fabric modules */ |
| 542 | struct se_session *se_sess; |
| 543 | struct se_tmr_req *se_tmr_req; |
| 544 | /* t_task is setup to t_task_backstore in transport_init_se_cmd() */ |
| 545 | struct se_transport_task *t_task; |
| 546 | struct se_transport_task t_task_backstore; |
| 547 | struct target_core_fabric_ops *se_tfo; |
| 548 | int (*transport_emulate_cdb)(struct se_cmd *); |
| 549 | void (*transport_split_cdb)(unsigned long long, u32 *, unsigned char *); |
| 550 | void (*transport_wait_for_tasks)(struct se_cmd *, int, int); |
| 551 | void (*transport_complete_callback)(struct se_cmd *); |
| 552 | } ____cacheline_aligned; |
| 553 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 554 | #define T_TASK(cmd) ((cmd)->t_task) |
| 555 | #define CMD_TFO(cmd) ((cmd)->se_tfo) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 556 | |
| 557 | struct se_tmr_req { |
| 558 | /* Task Management function to be preformed */ |
| 559 | u8 function; |
| 560 | /* Task Management response to send */ |
| 561 | u8 response; |
| 562 | int call_transport; |
| 563 | /* Reference to ITT that Task Mgmt should be preformed */ |
| 564 | u32 ref_task_tag; |
| 565 | /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */ |
| 566 | u64 ref_task_lun; |
| 567 | void *fabric_tmr_ptr; |
| 568 | struct se_cmd *task_cmd; |
| 569 | struct se_cmd *ref_cmd; |
| 570 | struct se_device *tmr_dev; |
| 571 | struct se_lun *tmr_lun; |
| 572 | struct list_head tmr_list; |
| 573 | } ____cacheline_aligned; |
| 574 | |
| 575 | struct se_ua { |
| 576 | u8 ua_asc; |
| 577 | u8 ua_ascq; |
| 578 | struct se_node_acl *ua_nacl; |
| 579 | struct list_head ua_dev_list; |
| 580 | struct list_head ua_nacl_list; |
| 581 | } ____cacheline_aligned; |
| 582 | |
| 583 | struct se_node_acl { |
| 584 | char initiatorname[TRANSPORT_IQN_LEN]; |
| 585 | /* Used to signal demo mode created ACL, disabled by default */ |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 586 | bool dynamic_node_acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 587 | u32 queue_depth; |
| 588 | u32 acl_index; |
| 589 | u64 num_cmds; |
| 590 | u64 read_bytes; |
| 591 | u64 write_bytes; |
| 592 | spinlock_t stats_lock; |
| 593 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ |
| 594 | atomic_t acl_pr_ref_count; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 595 | struct se_dev_entry *device_list; |
| 596 | struct se_session *nacl_sess; |
| 597 | struct se_portal_group *se_tpg; |
| 598 | spinlock_t device_list_lock; |
| 599 | spinlock_t nacl_sess_lock; |
| 600 | struct config_group acl_group; |
| 601 | struct config_group acl_attrib_group; |
| 602 | struct config_group acl_auth_group; |
| 603 | struct config_group acl_param_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 604 | struct config_group acl_fabric_stat_group; |
| 605 | struct config_group *acl_default_groups[5]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 606 | struct list_head acl_list; |
| 607 | struct list_head acl_sess_list; |
| 608 | } ____cacheline_aligned; |
| 609 | |
| 610 | struct se_session { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 611 | u64 sess_bin_isid; |
| 612 | struct se_node_acl *se_node_acl; |
| 613 | struct se_portal_group *se_tpg; |
| 614 | void *fabric_sess_ptr; |
| 615 | struct list_head sess_list; |
| 616 | struct list_head sess_acl_list; |
| 617 | } ____cacheline_aligned; |
| 618 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 619 | #define SE_SESS(cmd) ((cmd)->se_sess) |
| 620 | #define SE_NODE_ACL(sess) ((sess)->se_node_acl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 621 | |
| 622 | struct se_device; |
| 623 | struct se_transform_info; |
| 624 | struct scatterlist; |
| 625 | |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 626 | struct se_ml_stat_grps { |
| 627 | struct config_group stat_group; |
| 628 | struct config_group scsi_auth_intr_group; |
| 629 | struct config_group scsi_att_intr_port_group; |
| 630 | }; |
| 631 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 632 | struct se_lun_acl { |
| 633 | char initiatorname[TRANSPORT_IQN_LEN]; |
| 634 | u32 mapped_lun; |
| 635 | struct se_node_acl *se_lun_nacl; |
| 636 | struct se_lun *se_lun; |
| 637 | struct list_head lacl_list; |
| 638 | struct config_group se_lun_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 639 | struct se_ml_stat_grps ml_stat_grps; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 640 | } ____cacheline_aligned; |
| 641 | |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 642 | #define ML_STAT_GRPS(lacl) (&(lacl)->ml_stat_grps) |
| 643 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 644 | struct se_dev_entry { |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 645 | bool def_pr_registered; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 646 | /* See transport_lunflags_table */ |
| 647 | u32 lun_flags; |
| 648 | u32 deve_cmds; |
| 649 | u32 mapped_lun; |
| 650 | u32 average_bytes; |
| 651 | u32 last_byte_count; |
| 652 | u32 total_cmds; |
| 653 | u32 total_bytes; |
| 654 | u64 pr_res_key; |
| 655 | u64 creation_time; |
| 656 | u32 attach_count; |
| 657 | u64 read_bytes; |
| 658 | u64 write_bytes; |
| 659 | atomic_t ua_count; |
| 660 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ |
| 661 | atomic_t pr_ref_count; |
| 662 | struct se_lun_acl *se_lun_acl; |
| 663 | spinlock_t ua_lock; |
| 664 | struct se_lun *se_lun; |
| 665 | struct list_head alua_port_list; |
| 666 | struct list_head ua_list; |
| 667 | } ____cacheline_aligned; |
| 668 | |
| 669 | struct se_dev_limits { |
| 670 | /* Max supported HW queue depth */ |
| 671 | u32 hw_queue_depth; |
| 672 | /* Max supported virtual queue depth */ |
| 673 | u32 queue_depth; |
| 674 | /* From include/linux/blkdev.h for the other HW/SW limits. */ |
| 675 | struct queue_limits limits; |
| 676 | } ____cacheline_aligned; |
| 677 | |
| 678 | struct se_dev_attrib { |
| 679 | int emulate_dpo; |
| 680 | int emulate_fua_write; |
| 681 | int emulate_fua_read; |
| 682 | int emulate_write_cache; |
| 683 | int emulate_ua_intlck_ctrl; |
| 684 | int emulate_tas; |
| 685 | int emulate_tpu; |
| 686 | int emulate_tpws; |
| 687 | int emulate_reservations; |
| 688 | int emulate_alua; |
| 689 | int enforce_pr_isids; |
| 690 | u32 hw_block_size; |
| 691 | u32 block_size; |
| 692 | u32 hw_max_sectors; |
| 693 | u32 max_sectors; |
| 694 | u32 optimal_sectors; |
| 695 | u32 hw_queue_depth; |
| 696 | u32 queue_depth; |
| 697 | u32 task_timeout; |
| 698 | u32 max_unmap_lba_count; |
| 699 | u32 max_unmap_block_desc_count; |
| 700 | u32 unmap_granularity; |
| 701 | u32 unmap_granularity_alignment; |
| 702 | struct se_subsystem_dev *da_sub_dev; |
| 703 | struct config_group da_group; |
| 704 | } ____cacheline_aligned; |
| 705 | |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 706 | struct se_dev_stat_grps { |
| 707 | struct config_group stat_group; |
| 708 | struct config_group scsi_dev_group; |
| 709 | struct config_group scsi_tgt_dev_group; |
| 710 | struct config_group scsi_lu_group; |
| 711 | }; |
| 712 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 713 | struct se_subsystem_dev { |
| 714 | /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */ |
| 715 | #define SE_DEV_ALIAS_LEN 512 |
| 716 | unsigned char se_dev_alias[SE_DEV_ALIAS_LEN]; |
| 717 | /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */ |
| 718 | #define SE_UDEV_PATH_LEN 512 |
| 719 | unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN]; |
| 720 | u32 su_dev_flags; |
| 721 | struct se_hba *se_dev_hba; |
| 722 | struct se_device *se_dev_ptr; |
| 723 | struct se_dev_attrib se_dev_attrib; |
| 724 | /* T10 Asymmetric Logical Unit Assignment for Target Ports */ |
| 725 | struct t10_alua t10_alua; |
| 726 | /* T10 Inquiry and VPD WWN Information */ |
| 727 | struct t10_wwn t10_wwn; |
| 728 | /* T10 SPC-2 + SPC-3 Reservations */ |
| 729 | struct t10_reservation_template t10_reservation; |
| 730 | spinlock_t se_dev_lock; |
| 731 | void *se_dev_su_ptr; |
| 732 | struct list_head g_se_dev_list; |
| 733 | struct config_group se_dev_group; |
| 734 | /* For T10 Reservations */ |
| 735 | struct config_group se_dev_pr_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 736 | /* For target_core_stat.c groups */ |
| 737 | struct se_dev_stat_grps dev_stat_grps; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 738 | } ____cacheline_aligned; |
| 739 | |
| 740 | #define T10_ALUA(su_dev) (&(su_dev)->t10_alua) |
| 741 | #define T10_RES(su_dev) (&(su_dev)->t10_reservation) |
| 742 | #define T10_PR_OPS(su_dev) (&(su_dev)->t10_reservation.pr_ops) |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 743 | #define DEV_STAT_GRP(dev) (&(dev)->dev_stat_grps) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 744 | |
| 745 | struct se_device { |
| 746 | /* Set to 1 if thread is NOT sleeping on thread_sem */ |
| 747 | u8 thread_active; |
| 748 | u8 dev_status_timer_flags; |
| 749 | /* RELATIVE TARGET PORT IDENTIFER Counter */ |
| 750 | u16 dev_rpti_counter; |
| 751 | /* Used for SAM Task Attribute ordering */ |
| 752 | u32 dev_cur_ordered_id; |
| 753 | u32 dev_flags; |
| 754 | u32 dev_port_count; |
| 755 | /* See transport_device_status_table */ |
| 756 | u32 dev_status; |
| 757 | u32 dev_tcq_window_closed; |
| 758 | /* Physical device queue depth */ |
| 759 | u32 queue_depth; |
| 760 | /* Used for SPC-2 reservations enforce of ISIDs */ |
| 761 | u64 dev_res_bin_isid; |
| 762 | t10_task_attr_index_t dev_task_attr_type; |
| 763 | /* Pointer to transport specific device structure */ |
| 764 | void *dev_ptr; |
| 765 | u32 dev_index; |
| 766 | u64 creation_time; |
| 767 | u32 num_resets; |
| 768 | u64 num_cmds; |
| 769 | u64 read_bytes; |
| 770 | u64 write_bytes; |
| 771 | spinlock_t stats_lock; |
| 772 | /* Active commands on this virtual SE device */ |
| 773 | atomic_t active_cmds; |
| 774 | atomic_t simple_cmds; |
| 775 | atomic_t depth_left; |
| 776 | atomic_t dev_ordered_id; |
| 777 | atomic_t dev_tur_active; |
| 778 | atomic_t execute_tasks; |
| 779 | atomic_t dev_status_thr_count; |
| 780 | atomic_t dev_hoq_count; |
| 781 | atomic_t dev_ordered_sync; |
| 782 | struct se_obj dev_obj; |
| 783 | struct se_obj dev_access_obj; |
| 784 | struct se_obj dev_export_obj; |
| 785 | struct se_queue_obj *dev_queue_obj; |
| 786 | struct se_queue_obj *dev_status_queue_obj; |
| 787 | spinlock_t delayed_cmd_lock; |
| 788 | spinlock_t ordered_cmd_lock; |
| 789 | spinlock_t execute_task_lock; |
| 790 | spinlock_t state_task_lock; |
| 791 | spinlock_t dev_alua_lock; |
| 792 | spinlock_t dev_reservation_lock; |
| 793 | spinlock_t dev_state_lock; |
| 794 | spinlock_t dev_status_lock; |
| 795 | spinlock_t dev_status_thr_lock; |
| 796 | spinlock_t se_port_lock; |
| 797 | spinlock_t se_tmr_lock; |
| 798 | /* Used for legacy SPC-2 reservationsa */ |
| 799 | struct se_node_acl *dev_reserved_node_acl; |
| 800 | /* Used for ALUA Logical Unit Group membership */ |
| 801 | struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; |
| 802 | /* Used for SPC-3 Persistent Reservations */ |
| 803 | struct t10_pr_registration *dev_pr_res_holder; |
| 804 | struct list_head dev_sep_list; |
| 805 | struct list_head dev_tmr_list; |
| 806 | struct timer_list dev_status_timer; |
| 807 | /* Pointer to descriptor for processing thread */ |
| 808 | struct task_struct *process_thread; |
| 809 | pid_t process_thread_pid; |
| 810 | struct task_struct *dev_mgmt_thread; |
| 811 | struct list_head delayed_cmd_list; |
| 812 | struct list_head ordered_cmd_list; |
| 813 | struct list_head execute_task_list; |
| 814 | struct list_head state_task_list; |
| 815 | /* Pointer to associated SE HBA */ |
| 816 | struct se_hba *se_hba; |
| 817 | struct se_subsystem_dev *se_sub_dev; |
| 818 | /* Pointer to template of function pointers for transport */ |
| 819 | struct se_subsystem_api *transport; |
| 820 | /* Linked list for struct se_hba struct se_device list */ |
| 821 | struct list_head dev_list; |
| 822 | /* Linked list for struct se_global->g_se_dev_list */ |
| 823 | struct list_head g_se_dev_list; |
| 824 | } ____cacheline_aligned; |
| 825 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 826 | #define SE_DEV(cmd) ((cmd)->se_lun->lun_se_dev) |
| 827 | #define SU_DEV(dev) ((dev)->se_sub_dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 828 | #define DEV_ATTRIB(dev) (&(dev)->se_sub_dev->se_dev_attrib) |
| 829 | #define DEV_T10_WWN(dev) (&(dev)->se_sub_dev->t10_wwn) |
| 830 | |
| 831 | struct se_hba { |
| 832 | u16 hba_tpgt; |
| 833 | u32 hba_id; |
| 834 | /* See hba_flags_table */ |
| 835 | u32 hba_flags; |
| 836 | /* Virtual iSCSI devices attached. */ |
| 837 | u32 dev_count; |
| 838 | u32 hba_index; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 839 | atomic_t load_balance_queue; |
| 840 | atomic_t left_queue_depth; |
| 841 | /* Maximum queue depth the HBA can handle. */ |
| 842 | atomic_t max_queue_depth; |
| 843 | /* Pointer to transport specific host structure. */ |
| 844 | void *hba_ptr; |
| 845 | /* Linked list for struct se_device */ |
| 846 | struct list_head hba_dev_list; |
| 847 | struct list_head hba_list; |
| 848 | spinlock_t device_lock; |
| 849 | spinlock_t hba_queue_lock; |
| 850 | struct config_group hba_group; |
| 851 | struct mutex hba_access_mutex; |
| 852 | struct se_subsystem_api *transport; |
| 853 | } ____cacheline_aligned; |
| 854 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 855 | #define SE_HBA(dev) ((dev)->se_hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 856 | |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 857 | struct se_port_stat_grps { |
| 858 | struct config_group stat_group; |
| 859 | struct config_group scsi_port_group; |
| 860 | struct config_group scsi_tgt_port_group; |
| 861 | struct config_group scsi_transport_group; |
| 862 | }; |
| 863 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 864 | struct se_lun { |
| 865 | /* See transport_lun_status_table */ |
| 866 | enum transport_lun_status_table lun_status; |
| 867 | u32 lun_access; |
| 868 | u32 lun_flags; |
| 869 | u32 unpacked_lun; |
| 870 | atomic_t lun_acl_count; |
| 871 | spinlock_t lun_acl_lock; |
| 872 | spinlock_t lun_cmd_lock; |
| 873 | spinlock_t lun_sep_lock; |
| 874 | struct completion lun_shutdown_comp; |
| 875 | struct list_head lun_cmd_list; |
| 876 | struct list_head lun_acl_list; |
| 877 | struct se_device *lun_se_dev; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 878 | struct se_port *lun_sep; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 879 | struct config_group lun_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 880 | struct se_port_stat_grps port_stat_grps; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 881 | } ____cacheline_aligned; |
| 882 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 883 | #define SE_LUN(cmd) ((cmd)->se_lun) |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 884 | #define PORT_STAT_GRP(lun) (&(lun)->port_stat_grps) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 885 | |
Nicholas Bellinger | e89d15e | 2011-02-09 15:35:03 -0800 | [diff] [blame] | 886 | struct scsi_port_stats { |
| 887 | u64 cmd_pdus; |
| 888 | u64 tx_data_octets; |
| 889 | u64 rx_data_octets; |
| 890 | } ____cacheline_aligned; |
| 891 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 892 | struct se_port { |
| 893 | /* RELATIVE TARGET PORT IDENTIFER */ |
| 894 | u16 sep_rtpi; |
| 895 | int sep_tg_pt_secondary_stat; |
| 896 | int sep_tg_pt_secondary_write_md; |
| 897 | u32 sep_index; |
| 898 | struct scsi_port_stats sep_stats; |
| 899 | /* Used for ALUA Target Port Groups membership */ |
| 900 | atomic_t sep_tg_pt_gp_active; |
| 901 | atomic_t sep_tg_pt_secondary_offline; |
| 902 | /* Used for PR ALL_TG_PT=1 */ |
| 903 | atomic_t sep_tg_pt_ref_cnt; |
| 904 | spinlock_t sep_alua_lock; |
| 905 | struct mutex sep_tg_pt_md_mutex; |
| 906 | struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; |
| 907 | struct se_lun *sep_lun; |
| 908 | struct se_portal_group *sep_tpg; |
| 909 | struct list_head sep_alua_list; |
| 910 | struct list_head sep_list; |
| 911 | } ____cacheline_aligned; |
| 912 | |
| 913 | struct se_tpg_np { |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 914 | struct se_portal_group *tpg_np_parent; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 915 | struct config_group tpg_np_group; |
| 916 | } ____cacheline_aligned; |
| 917 | |
| 918 | struct se_portal_group { |
| 919 | /* Type of target portal group, see transport_tpg_type_table */ |
| 920 | enum transport_tpg_type_table se_tpg_type; |
| 921 | /* Number of ACLed Initiator Nodes for this TPG */ |
| 922 | u32 num_node_acls; |
| 923 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ |
| 924 | atomic_t tpg_pr_ref_count; |
| 925 | /* Spinlock for adding/removing ACLed Nodes */ |
| 926 | spinlock_t acl_node_lock; |
| 927 | /* Spinlock for adding/removing sessions */ |
| 928 | spinlock_t session_lock; |
| 929 | spinlock_t tpg_lun_lock; |
| 930 | /* Pointer to $FABRIC_MOD portal group */ |
| 931 | void *se_tpg_fabric_ptr; |
| 932 | struct list_head se_tpg_list; |
| 933 | /* linked list for initiator ACL list */ |
| 934 | struct list_head acl_node_list; |
| 935 | struct se_lun *tpg_lun_list; |
| 936 | struct se_lun tpg_virt_lun0; |
| 937 | /* List of TCM sessions assoicated wth this TPG */ |
| 938 | struct list_head tpg_sess_list; |
| 939 | /* Pointer to $FABRIC_MOD dependent code */ |
| 940 | struct target_core_fabric_ops *se_tpg_tfo; |
| 941 | struct se_wwn *se_tpg_wwn; |
| 942 | struct config_group tpg_group; |
| 943 | struct config_group *tpg_default_groups[6]; |
| 944 | struct config_group tpg_lun_group; |
| 945 | struct config_group tpg_np_group; |
| 946 | struct config_group tpg_acl_group; |
| 947 | struct config_group tpg_attrib_group; |
| 948 | struct config_group tpg_param_group; |
| 949 | } ____cacheline_aligned; |
| 950 | |
Nicholas Bellinger | 35ce9e2 | 2011-03-14 04:06:02 -0700 | [diff] [blame] | 951 | #define TPG_TFO(se_tpg) ((se_tpg)->se_tpg_tfo) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 952 | |
| 953 | struct se_wwn { |
| 954 | struct target_fabric_configfs *wwn_tf; |
| 955 | struct config_group wwn_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame^] | 956 | struct config_group *wwn_default_groups[2]; |
| 957 | struct config_group fabric_stat_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 958 | } ____cacheline_aligned; |
| 959 | |
| 960 | struct se_global { |
| 961 | u16 alua_lu_gps_counter; |
| 962 | int g_sub_api_initialized; |
| 963 | u32 in_shutdown; |
| 964 | u32 alua_lu_gps_count; |
| 965 | u32 g_hba_id_counter; |
| 966 | struct config_group target_core_hbagroup; |
| 967 | struct config_group alua_group; |
| 968 | struct config_group alua_lu_gps_group; |
| 969 | struct list_head g_lu_gps_list; |
| 970 | struct list_head g_se_tpg_list; |
| 971 | struct list_head g_hba_list; |
| 972 | struct list_head g_se_dev_list; |
| 973 | struct se_hba *g_lun0_hba; |
| 974 | struct se_subsystem_dev *g_lun0_su_dev; |
| 975 | struct se_device *g_lun0_dev; |
| 976 | struct t10_alua_lu_gp *default_lu_gp; |
| 977 | spinlock_t g_device_lock; |
| 978 | spinlock_t hba_lock; |
| 979 | spinlock_t se_tpg_lock; |
| 980 | spinlock_t lu_gps_lock; |
| 981 | spinlock_t plugin_class_lock; |
| 982 | } ____cacheline_aligned; |
| 983 | |
| 984 | #endif /* TARGET_CORE_BASE_H */ |