1 /* 2 * zfcp device driver 3 * 4 * Interface to the FSF support functions. 5 * 6 * Copyright IBM Corporation 2002, 2008 7 */ 8 9 #ifndef FSF_H 10 #define FSF_H 11 12 #include <linux/pfn.h> 13 14 #define FSF_QTCB_CURRENT_VERSION 0x00000001 15 16 /* FSF commands */ 17 #define FSF_QTCB_FCP_CMND 0x00000001 18 #define FSF_QTCB_ABORT_FCP_CMND 0x00000002 19 #define FSF_QTCB_OPEN_PORT_WITH_DID 0x00000005 20 #define FSF_QTCB_OPEN_LUN 0x00000006 21 #define FSF_QTCB_CLOSE_LUN 0x00000007 22 #define FSF_QTCB_CLOSE_PORT 0x00000008 23 #define FSF_QTCB_CLOSE_PHYSICAL_PORT 0x00000009 24 #define FSF_QTCB_SEND_ELS 0x0000000B 25 #define FSF_QTCB_SEND_GENERIC 0x0000000C 26 #define FSF_QTCB_EXCHANGE_CONFIG_DATA 0x0000000D 27 #define FSF_QTCB_EXCHANGE_PORT_DATA 0x0000000E 28 #define FSF_QTCB_DOWNLOAD_CONTROL_FILE 0x00000012 29 #define FSF_QTCB_UPLOAD_CONTROL_FILE 0x00000013 30 31 /* FSF QTCB types */ 32 #define FSF_IO_COMMAND 0x00000001 33 #define FSF_SUPPORT_COMMAND 0x00000002 34 #define FSF_CONFIG_COMMAND 0x00000003 35 #define FSF_PORT_COMMAND 0x00000004 36 37 /* FSF control file upload/download operations' subtype and options */ 38 #define FSF_CFDC_OPERATION_SUBTYPE 0x00020001 39 #define FSF_CFDC_OPTION_NORMAL_MODE 0x00000000 40 #define FSF_CFDC_OPTION_FORCE 0x00000001 41 #define FSF_CFDC_OPTION_FULL_ACCESS 0x00000002 42 #define FSF_CFDC_OPTION_RESTRICTED_ACCESS 0x00000004 43 44 /* FSF protocol states */ 45 #define FSF_PROT_GOOD 0x00000001 46 #define FSF_PROT_QTCB_VERSION_ERROR 0x00000010 47 #define FSF_PROT_SEQ_NUMB_ERROR 0x00000020 48 #define FSF_PROT_UNSUPP_QTCB_TYPE 0x00000040 49 #define FSF_PROT_HOST_CONNECTION_INITIALIZING 0x00000080 50 #define FSF_PROT_FSF_STATUS_PRESENTED 0x00000100 51 #define FSF_PROT_DUPLICATE_REQUEST_ID 0x00000200 52 #define FSF_PROT_LINK_DOWN 0x00000400 53 #define FSF_PROT_REEST_QUEUE 0x00000800 54 #define FSF_PROT_ERROR_STATE 0x01000000 55 56 /* FSF states */ 57 #define FSF_GOOD 0x00000000 58 #define FSF_PORT_ALREADY_OPEN 0x00000001 59 #define FSF_LUN_ALREADY_OPEN 0x00000002 60 #define FSF_PORT_HANDLE_NOT_VALID 0x00000003 61 #define FSF_LUN_HANDLE_NOT_VALID 0x00000004 62 #define FSF_HANDLE_MISMATCH 0x00000005 63 #define FSF_SERVICE_CLASS_NOT_SUPPORTED 0x00000006 64 #define FSF_FCPLUN_NOT_VALID 0x00000009 65 #define FSF_ACCESS_DENIED 0x00000010 66 #define FSF_LUN_SHARING_VIOLATION 0x00000012 67 #define FSF_FCP_COMMAND_DOES_NOT_EXIST 0x00000022 68 #define FSF_DIRECTION_INDICATOR_NOT_VALID 0x00000030 69 #define FSF_CMND_LENGTH_NOT_VALID 0x00000033 70 #define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED 0x00000040 71 #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED 0x00000041 72 #define FSF_ELS_COMMAND_REJECTED 0x00000050 73 #define FSF_GENERIC_COMMAND_REJECTED 0x00000051 74 #define FSF_OPERATION_PARTIALLY_SUCCESSFUL 0x00000052 75 #define FSF_AUTHORIZATION_FAILURE 0x00000053 76 #define FSF_CFDC_ERROR_DETECTED 0x00000054 77 #define FSF_CONTROL_FILE_UPDATE_ERROR 0x00000055 78 #define FSF_CONTROL_FILE_TOO_LARGE 0x00000056 79 #define FSF_ACCESS_CONFLICT_DETECTED 0x00000057 80 #define FSF_CONFLICTS_OVERRULED 0x00000058 81 #define FSF_PORT_BOXED 0x00000059 82 #define FSF_LUN_BOXED 0x0000005A 83 #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE 0x0000005B 84 #define FSF_PAYLOAD_SIZE_MISMATCH 0x00000060 85 #define FSF_REQUEST_SIZE_TOO_LARGE 0x00000061 86 #define FSF_RESPONSE_SIZE_TOO_LARGE 0x00000062 87 #define FSF_SBAL_MISMATCH 0x00000063 88 #define FSF_OPEN_PORT_WITHOUT_PRLI 0x00000064 89 #define FSF_ADAPTER_STATUS_AVAILABLE 0x000000AD 90 #define FSF_FCP_RSP_AVAILABLE 0x000000AF 91 #define FSF_UNKNOWN_COMMAND 0x000000E2 92 #define FSF_UNKNOWN_OP_SUBTYPE 0x000000E3 93 #define FSF_INVALID_COMMAND_OPTION 0x000000E5 94 /* #define FSF_ERROR 0x000000FF */ 95 96 #define FSF_PROT_STATUS_QUAL_SIZE 16 97 #define FSF_STATUS_QUALIFIER_SIZE 16 98 99 /* FSF status qualifier, recommendations */ 100 #define FSF_SQ_NO_RECOM 0x00 101 #define FSF_SQ_FCP_RSP_AVAILABLE 0x01 102 #define FSF_SQ_RETRY_IF_POSSIBLE 0x02 103 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED 0x03 104 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE 0x04 105 #define FSF_SQ_ULP_PROGRAMMING_ERROR 0x05 106 #define FSF_SQ_COMMAND_ABORTED 0x06 107 #define FSF_SQ_NO_RETRY_POSSIBLE 0x07 108 109 /* FSF status qualifier for CFDC commands */ 110 #define FSF_SQ_CFDC_HARDENED_ON_SE 0x00000000 111 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE 0x00000001 112 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2 0x00000002 113 /* CFDC subtable codes */ 114 #define FSF_SQ_CFDC_SUBTABLE_OS 0x0001 115 #define FSF_SQ_CFDC_SUBTABLE_PORT_WWPN 0x0002 116 #define FSF_SQ_CFDC_SUBTABLE_PORT_DID 0x0003 117 #define FSF_SQ_CFDC_SUBTABLE_LUN 0x0004 118 119 /* FSF status qualifier (most significant 4 bytes), local link down */ 120 #define FSF_PSQ_LINK_NO_LIGHT 0x00000004 121 #define FSF_PSQ_LINK_WRAP_PLUG 0x00000008 122 #define FSF_PSQ_LINK_NO_FCP 0x00000010 123 #define FSF_PSQ_LINK_FIRMWARE_UPDATE 0x00000020 124 #define FSF_PSQ_LINK_INVALID_WWPN 0x00000100 125 #define FSF_PSQ_LINK_NO_NPIV_SUPPORT 0x00000200 126 #define FSF_PSQ_LINK_NO_FCP_RESOURCES 0x00000400 127 #define FSF_PSQ_LINK_NO_FABRIC_RESOURCES 0x00000800 128 #define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE 0x00001000 129 #define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED 0x00002000 130 #define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED 0x00004000 131 #define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT 0x00008000 132 133 /* payload size in status read buffer */ 134 #define FSF_STATUS_READ_PAYLOAD_SIZE 4032 135 136 /* number of status read buffers that should be sent by ULP */ 137 #define FSF_STATUS_READS_RECOM 16 138 139 /* status types in status read buffer */ 140 #define FSF_STATUS_READ_PORT_CLOSED 0x00000001 141 #define FSF_STATUS_READ_INCOMING_ELS 0x00000002 142 #define FSF_STATUS_READ_SENSE_DATA_AVAIL 0x00000003 143 #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD 0x00000004 144 #define FSF_STATUS_READ_LINK_DOWN 0x00000005 145 #define FSF_STATUS_READ_LINK_UP 0x00000006 146 #define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009 147 #define FSF_STATUS_READ_CFDC_UPDATED 0x0000000A 148 #define FSF_STATUS_READ_CFDC_HARDENED 0x0000000B 149 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C 150 151 /* status subtypes in status read buffer */ 152 #define FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT 0x00000001 153 #define FSF_STATUS_READ_SUB_ERROR_PORT 0x00000002 154 155 /* status subtypes for link down */ 156 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK 0x00000000 157 #define FSF_STATUS_READ_SUB_FDISC_FAILED 0x00000001 158 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE 0x00000002 159 160 /* status subtypes for unsolicited status notification lost */ 161 #define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 162 #define FSF_STATUS_READ_SUB_SENSE_DATA 0x00000002 163 #define FSF_STATUS_READ_SUB_LINK_STATUS 0x00000004 164 #define FSF_STATUS_READ_SUB_PORT_CLOSED 0x00000008 165 #define FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD 0x00000010 166 #define FSF_STATUS_READ_SUB_ACT_UPDATED 0x00000020 167 #define FSF_STATUS_READ_SUB_ACT_HARDENED 0x00000040 168 #define FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT 0x00000080 169 170 /* status subtypes for CFDC */ 171 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE 0x00000002 172 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2 0x0000000F 173 174 /* topologie that is detected by the adapter */ 175 #define FSF_TOPO_ERROR 0x00000000 176 #define FSF_TOPO_P2P 0x00000001 177 #define FSF_TOPO_FABRIC 0x00000002 178 #define FSF_TOPO_AL 0x00000003 179 180 /* data direction for FCP commands */ 181 #define FSF_DATADIR_WRITE 0x00000001 182 #define FSF_DATADIR_READ 0x00000002 183 #define FSF_DATADIR_READ_WRITE 0x00000003 184 #define FSF_DATADIR_CMND 0x00000004 185 186 /* fc service class */ 187 #define FSF_CLASS_1 0x00000001 188 #define FSF_CLASS_2 0x00000002 189 #define FSF_CLASS_3 0x00000003 190 191 /* SBAL chaining */ 192 #define FSF_MAX_SBALS_PER_REQ 36 193 #define FSF_MAX_SBALS_PER_ELS_REQ 2 194 195 /* logging space behind QTCB */ 196 #define FSF_QTCB_LOG_SIZE 1024 197 198 /* channel features */ 199 #define FSF_FEATURE_CFDC 0x00000002 200 #define FSF_FEATURE_LUN_SHARING 0x00000004 201 #define FSF_FEATURE_NOTIFICATION_LOST 0x00000008 202 #define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010 203 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020 204 #define FSF_FEATURE_UPDATE_ALERT 0x00000100 205 #define FSF_FEATURE_MEASUREMENT_DATA 0x00000200 206 207 /* host connection features */ 208 #define FSF_FEATURE_NPIV_MODE 0x00000001 209 #define FSF_FEATURE_VM_ASSIGNED_WWPN 0x00000002 210 211 /* option */ 212 #define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001 213 #define FSF_OPEN_LUN_REPLICATE_SENSE 0x00000002 214 215 /* adapter types */ 216 #define FSF_ADAPTER_TYPE_FICON 0x00000001 217 #define FSF_ADAPTER_TYPE_FICON_EXPRESS 0x00000002 218 219 /* port types */ 220 #define FSF_HBA_PORTTYPE_UNKNOWN 0x00000001 221 #define FSF_HBA_PORTTYPE_NOTPRESENT 0x00000003 222 #define FSF_HBA_PORTTYPE_NPORT 0x00000005 223 #define FSF_HBA_PORTTYPE_PTP 0x00000021 224 /* following are not defined and used by FSF Spec 225 but are additionally defined by FC-HBA */ 226 #define FSF_HBA_PORTTYPE_OTHER 0x00000002 227 #define FSF_HBA_PORTTYPE_NOTPRESENT 0x00000003 228 #define FSF_HBA_PORTTYPE_NLPORT 0x00000006 229 #define FSF_HBA_PORTTYPE_FLPORT 0x00000007 230 #define FSF_HBA_PORTTYPE_FPORT 0x00000008 231 #define FSF_HBA_PORTTYPE_LPORT 0x00000020 232 233 /* port states */ 234 #define FSF_HBA_PORTSTATE_UNKNOWN 0x00000001 235 #define FSF_HBA_PORTSTATE_ONLINE 0x00000002 236 #define FSF_HBA_PORTSTATE_OFFLINE 0x00000003 237 #define FSF_HBA_PORTSTATE_LINKDOWN 0x00000006 238 #define FSF_HBA_PORTSTATE_ERROR 0x00000007 239 240 /* IO states of adapter */ 241 #define FSF_IOSTAT_NPORT_RJT 0x00000004 242 #define FSF_IOSTAT_FABRIC_RJT 0x00000005 243 #define FSF_IOSTAT_LS_RJT 0x00000009 244 245 /* open LUN access flags*/ 246 #define FSF_UNIT_ACCESS_OPEN_LUN_ALLOWED 0x01000000 247 #define FSF_UNIT_ACCESS_EXCLUSIVE 0x02000000 248 #define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER 0x10000000 249 250 /* FSF interface for CFDC */ 251 #define ZFCP_CFDC_MAX_SIZE 127 * 1024 252 #define ZFCP_CFDC_PAGES PFN_UP(ZFCP_CFDC_MAX_SIZE) 253 254 struct zfcp_fsf_cfdc { 255 struct scatterlist sg[ZFCP_CFDC_PAGES]; 256 u32 command; 257 u32 option; 258 }; 259 260 struct fsf_queue_designator { 261 u8 cssid; 262 u8 chpid; 263 u8 hla; 264 u8 ua; 265 u32 res1; 266 } __attribute__ ((packed)); 267 268 struct fsf_port_closed_payload { 269 struct fsf_queue_designator queue_designator; 270 u32 port_handle; 271 } __attribute__ ((packed)); 272 273 struct fsf_bit_error_payload { 274 u32 res1; 275 u32 link_failure_error_count; 276 u32 loss_of_sync_error_count; 277 u32 loss_of_signal_error_count; 278 u32 primitive_sequence_error_count; 279 u32 invalid_transmission_word_error_count; 280 u32 crc_error_count; 281 u32 primitive_sequence_event_timeout_count; 282 u32 elastic_buffer_overrun_error_count; 283 u32 fcal_arbitration_timeout_count; 284 u32 advertised_receive_b2b_credit; 285 u32 current_receive_b2b_credit; 286 u32 advertised_transmit_b2b_credit; 287 u32 current_transmit_b2b_credit; 288 } __attribute__ ((packed)); 289 290 struct fsf_link_down_info { 291 u32 error_code; 292 u32 res1; 293 u8 res2[2]; 294 u8 primary_status; 295 u8 ioerr_code; 296 u8 action_code; 297 u8 reason_code; 298 u8 explanation_code; 299 u8 vendor_specific_code; 300 } __attribute__ ((packed)); 301 302 struct fsf_status_read_buffer { 303 u32 status_type; 304 u32 status_subtype; 305 u32 length; 306 u32 res1; 307 struct fsf_queue_designator queue_designator; 308 u32 d_id; 309 u32 class; 310 u64 fcp_lun; 311 u8 res3[24]; 312 union { 313 u8 data[FSF_STATUS_READ_PAYLOAD_SIZE]; 314 u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)]; 315 struct fsf_link_down_info link_down_info; 316 struct fsf_bit_error_payload bit_error; 317 } payload; 318 } __attribute__ ((packed)); 319 320 struct fsf_qual_version_error { 321 u32 fsf_version; 322 u32 res1[3]; 323 } __attribute__ ((packed)); 324 325 struct fsf_qual_sequence_error { 326 u32 exp_req_seq_no; 327 u32 res1[3]; 328 } __attribute__ ((packed)); 329 330 struct fsf_qual_latency_info { 331 u32 channel_lat; 332 u32 fabric_lat; 333 u8 res1[8]; 334 } __attribute__ ((packed)); 335 336 union fsf_prot_status_qual { 337 u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)]; 338 u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)]; 339 struct fsf_qual_version_error version_error; 340 struct fsf_qual_sequence_error sequence_error; 341 struct fsf_link_down_info link_down_info; 342 struct fsf_qual_latency_info latency_info; 343 } __attribute__ ((packed)); 344 345 struct fsf_qtcb_prefix { 346 u64 req_id; 347 u32 qtcb_version; 348 u32 ulp_info; 349 u32 qtcb_type; 350 u32 req_seq_no; 351 u32 prot_status; 352 union fsf_prot_status_qual prot_status_qual; 353 u8 res1[20]; 354 } __attribute__ ((packed)); 355 356 struct fsf_statistics_info { 357 u64 input_req; 358 u64 output_req; 359 u64 control_req; 360 u64 input_mb; 361 u64 output_mb; 362 u64 seconds_act; 363 } __attribute__ ((packed)); 364 365 union fsf_status_qual { 366 u8 byte[FSF_STATUS_QUALIFIER_SIZE]; 367 u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)]; 368 u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)]; 369 u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)]; 370 struct fsf_queue_designator fsf_queue_designator; 371 struct fsf_link_down_info link_down_info; 372 } __attribute__ ((packed)); 373 374 struct fsf_qtcb_header { 375 u64 req_handle; 376 u32 fsf_command; 377 u32 res1; 378 u32 port_handle; 379 u32 lun_handle; 380 u32 res2; 381 u32 fsf_status; 382 union fsf_status_qual fsf_status_qual; 383 u8 res3[28]; 384 u16 log_start; 385 u16 log_length; 386 u8 res4[16]; 387 } __attribute__ ((packed)); 388 389 struct fsf_nport_serv_param { 390 u8 common_serv_param[16]; 391 u64 wwpn; 392 u64 wwnn; 393 u8 class1_serv_param[16]; 394 u8 class2_serv_param[16]; 395 u8 class3_serv_param[16]; 396 u8 class4_serv_param[16]; 397 u8 vendor_version_level[16]; 398 } __attribute__ ((packed)); 399 400 struct fsf_plogi { 401 u32 code; 402 struct fsf_nport_serv_param serv_param; 403 } __attribute__ ((packed)); 404 405 #define FSF_FCP_CMND_SIZE 288 406 #define FSF_FCP_RSP_SIZE 128 407 408 struct fsf_qtcb_bottom_io { 409 u32 data_direction; 410 u32 service_class; 411 u8 res1[8]; 412 u32 fcp_cmnd_length; 413 u8 res2[12]; 414 u8 fcp_cmnd[FSF_FCP_CMND_SIZE]; 415 u8 fcp_rsp[FSF_FCP_RSP_SIZE]; 416 u8 res3[64]; 417 } __attribute__ ((packed)); 418 419 struct fsf_qtcb_bottom_support { 420 u32 operation_subtype; 421 u8 res1[12]; 422 u32 d_id; 423 u32 option; 424 u64 fcp_lun; 425 u64 res2; 426 u64 req_handle; 427 u32 service_class; 428 u8 res3[3]; 429 u8 timeout; 430 u32 lun_access_info; 431 u8 res4[180]; 432 u32 els1_length; 433 u32 els2_length; 434 u32 req_buf_length; 435 u32 resp_buf_length; 436 u8 els[256]; 437 } __attribute__ ((packed)); 438 439 struct fsf_qtcb_bottom_config { 440 u32 lic_version; 441 u32 feature_selection; 442 u32 high_qtcb_version; 443 u32 low_qtcb_version; 444 u32 max_qtcb_size; 445 u32 max_data_transfer_size; 446 u32 adapter_features; 447 u32 connection_features; 448 u32 fc_topology; 449 u32 fc_link_speed; 450 u32 adapter_type; 451 u32 peer_d_id; 452 u8 res1[2]; 453 u16 timer_interval; 454 u8 res2[8]; 455 u32 s_id; 456 struct fsf_nport_serv_param nport_serv_param; 457 u8 reserved_nport_serv_param[16]; 458 u8 res3[8]; 459 u32 adapter_ports; 460 u32 hardware_version; 461 u8 serial_number[32]; 462 struct fsf_nport_serv_param plogi_payload; 463 struct fsf_statistics_info stat_info; 464 u8 res4[112]; 465 } __attribute__ ((packed)); 466 467 struct fsf_qtcb_bottom_port { 468 u64 wwpn; 469 u32 fc_port_id; 470 u32 port_type; 471 u32 port_state; 472 u32 class_of_service; /* should be 0x00000006 for class 2 and 3 */ 473 u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */ 474 u8 active_fc4_types[32]; 475 u32 supported_speed; /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */ 476 u32 maximum_frame_size; /* fixed value of 2112 */ 477 u64 seconds_since_last_reset; 478 u64 tx_frames; 479 u64 tx_words; 480 u64 rx_frames; 481 u64 rx_words; 482 u64 lip; /* 0 */ 483 u64 nos; /* currently 0 */ 484 u64 error_frames; /* currently 0 */ 485 u64 dumped_frames; /* currently 0 */ 486 u64 link_failure; 487 u64 loss_of_sync; 488 u64 loss_of_signal; 489 u64 psp_error_counts; 490 u64 invalid_tx_words; 491 u64 invalid_crcs; 492 u64 input_requests; 493 u64 output_requests; 494 u64 control_requests; 495 u64 input_mb; /* where 1 MByte == 1.000.000 Bytes */ 496 u64 output_mb; /* where 1 MByte == 1.000.000 Bytes */ 497 u8 cp_util; 498 u8 cb_util; 499 u8 a_util; 500 u8 res2[253]; 501 } __attribute__ ((packed)); 502 503 union fsf_qtcb_bottom { 504 struct fsf_qtcb_bottom_io io; 505 struct fsf_qtcb_bottom_support support; 506 struct fsf_qtcb_bottom_config config; 507 struct fsf_qtcb_bottom_port port; 508 }; 509 510 struct fsf_qtcb { 511 struct fsf_qtcb_prefix prefix; 512 struct fsf_qtcb_header header; 513 union fsf_qtcb_bottom bottom; 514 u8 log[FSF_QTCB_LOG_SIZE]; 515 } __attribute__ ((packed)); 516 517 #endif /* FSF_H */ 518