zfcp_scsi.c revision 058b8647892ed49ba6a0d2c0966a72e20e2e69ff
1/* 2 * zfcp device driver 3 * 4 * Interface to Linux SCSI midlayer. 5 * 6 * Copyright IBM Corporation 2002, 2009 7 */ 8 9#define KMSG_COMPONENT "zfcp" 10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12#include <asm/atomic.h> 13#include "zfcp_ext.h" 14#include "zfcp_dbf.h" 15 16static unsigned int default_depth = 32; 17module_param_named(queue_depth, default_depth, uint, 0600); 18MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices"); 19 20/* Find start of Sense Information in FCP response unit*/ 21char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu) 22{ 23 char *fcp_sns_info_ptr; 24 25 fcp_sns_info_ptr = (unsigned char *) &fcp_rsp_iu[1]; 26 if (fcp_rsp_iu->validity.bits.fcp_rsp_len_valid) 27 fcp_sns_info_ptr += fcp_rsp_iu->fcp_rsp_len; 28 29 return fcp_sns_info_ptr; 30} 31 32static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth) 33{ 34 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); 35 return sdev->queue_depth; 36} 37 38static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt) 39{ 40 struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata; 41 unit->device = NULL; 42 zfcp_unit_put(unit); 43} 44 45static int zfcp_scsi_slave_configure(struct scsi_device *sdp) 46{ 47 if (sdp->tagged_supported) 48 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth); 49 else 50 scsi_adjust_queue_depth(sdp, 0, 1); 51 return 0; 52} 53 54static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) 55{ 56 set_host_byte(scpnt, result); 57 if ((scpnt->device != NULL) && (scpnt->device->host != NULL)) 58 zfcp_scsi_dbf_event_result("fail", 4, 59 (struct zfcp_adapter*) scpnt->device->host->hostdata[0], 60 scpnt, NULL); 61 /* return directly */ 62 scpnt->scsi_done(scpnt); 63} 64 65static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt, 66 void (*done) (struct scsi_cmnd *)) 67{ 68 struct zfcp_unit *unit; 69 struct zfcp_adapter *adapter; 70 int status, scsi_result, ret; 71 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device)); 72 73 /* reset the status for this request */ 74 scpnt->result = 0; 75 scpnt->host_scribble = NULL; 76 scpnt->scsi_done = done; 77 78 /* 79 * figure out adapter and target device 80 * (stored there by zfcp_scsi_slave_alloc) 81 */ 82 adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0]; 83 unit = scpnt->device->hostdata; 84 85 BUG_ON(!adapter || (adapter != unit->port->adapter)); 86 BUG_ON(!scpnt->scsi_done); 87 88 if (unlikely(!unit)) { 89 zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT); 90 return 0; 91 } 92 93 scsi_result = fc_remote_port_chkready(rport); 94 if (unlikely(scsi_result)) { 95 scpnt->result = scsi_result; 96 zfcp_scsi_dbf_event_result("fail", 4, adapter, scpnt, NULL); 97 scpnt->scsi_done(scpnt); 98 return 0; 99 } 100 101 status = atomic_read(&unit->status); 102 if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) || 103 !(status & ZFCP_STATUS_COMMON_RUNNING))) { 104 zfcp_scsi_command_fail(scpnt, DID_ERROR); 105 return 0;; 106 } 107 108 ret = zfcp_fsf_send_fcp_command_task(unit, scpnt); 109 if (unlikely(ret == -EBUSY)) 110 return SCSI_MLQUEUE_DEVICE_BUSY; 111 else if (unlikely(ret < 0)) 112 return SCSI_MLQUEUE_HOST_BUSY; 113 114 return ret; 115} 116 117static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter, 118 int channel, unsigned int id, 119 unsigned int lun) 120{ 121 struct zfcp_port *port; 122 struct zfcp_unit *unit; 123 int scsi_lun; 124 125 list_for_each_entry(port, &adapter->port_list_head, list) { 126 if (!port->rport || (id != port->rport->scsi_target_id)) 127 continue; 128 list_for_each_entry(unit, &port->unit_list_head, list) { 129 scsi_lun = scsilun_to_int( 130 (struct scsi_lun *)&unit->fcp_lun); 131 if (lun == scsi_lun) 132 return unit; 133 } 134 } 135 136 return NULL; 137} 138 139static int zfcp_scsi_slave_alloc(struct scsi_device *sdp) 140{ 141 struct zfcp_adapter *adapter; 142 struct zfcp_unit *unit; 143 unsigned long flags; 144 int retval = -ENXIO; 145 146 adapter = (struct zfcp_adapter *) sdp->host->hostdata[0]; 147 if (!adapter) 148 goto out; 149 150 read_lock_irqsave(&zfcp_data.config_lock, flags); 151 unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun); 152 if (unit) { 153 sdp->hostdata = unit; 154 unit->device = sdp; 155 zfcp_unit_get(unit); 156 retval = 0; 157 } 158 read_unlock_irqrestore(&zfcp_data.config_lock, flags); 159out: 160 return retval; 161} 162 163static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) 164{ 165 struct Scsi_Host *scsi_host = scpnt->device->host; 166 struct zfcp_adapter *adapter = 167 (struct zfcp_adapter *) scsi_host->hostdata[0]; 168 struct zfcp_unit *unit = scpnt->device->hostdata; 169 struct zfcp_fsf_req *old_req, *abrt_req; 170 unsigned long flags; 171 unsigned long old_reqid = (unsigned long) scpnt->host_scribble; 172 int retval = SUCCESS; 173 int retry = 3; 174 char *dbf_tag; 175 176 /* avoid race condition between late normal completion and abort */ 177 write_lock_irqsave(&adapter->abort_lock, flags); 178 179 spin_lock(&adapter->req_list_lock); 180 old_req = zfcp_reqlist_find(adapter, old_reqid); 181 spin_unlock(&adapter->req_list_lock); 182 if (!old_req) { 183 write_unlock_irqrestore(&adapter->abort_lock, flags); 184 zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 185 old_reqid); 186 return FAILED; /* completion could be in progress */ 187 } 188 old_req->data = NULL; 189 190 /* don't access old fsf_req after releasing the abort_lock */ 191 write_unlock_irqrestore(&adapter->abort_lock, flags); 192 193 while (retry--) { 194 abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit); 195 if (abrt_req) 196 break; 197 198 zfcp_erp_wait(adapter); 199 if (!(atomic_read(&adapter->status) & 200 ZFCP_STATUS_COMMON_RUNNING)) { 201 zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL, 202 old_reqid); 203 return SUCCESS; 204 } 205 } 206 if (!abrt_req) 207 return FAILED; 208 209 wait_for_completion(&abrt_req->completion); 210 211 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) 212 dbf_tag = "okay"; 213 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) 214 dbf_tag = "lte2"; 215 else { 216 dbf_tag = "fail"; 217 retval = FAILED; 218 } 219 zfcp_scsi_dbf_event_abort(dbf_tag, adapter, scpnt, abrt_req, old_reqid); 220 zfcp_fsf_req_free(abrt_req); 221 return retval; 222} 223 224static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) 225{ 226 struct zfcp_unit *unit = scpnt->device->hostdata; 227 struct zfcp_adapter *adapter = unit->port->adapter; 228 struct zfcp_fsf_req *fsf_req; 229 int retval = SUCCESS; 230 int retry = 3; 231 232 while (retry--) { 233 fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags); 234 if (fsf_req) 235 break; 236 237 zfcp_erp_wait(adapter); 238 if (!(atomic_read(&adapter->status) & 239 ZFCP_STATUS_COMMON_RUNNING)) { 240 zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, 241 scpnt); 242 return SUCCESS; 243 } 244 } 245 if (!fsf_req) 246 return FAILED; 247 248 wait_for_completion(&fsf_req->completion); 249 250 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { 251 zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt); 252 retval = FAILED; 253 } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) { 254 zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt); 255 retval = FAILED; 256 } else 257 zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt); 258 259 zfcp_fsf_req_free(fsf_req); 260 return retval; 261} 262 263static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) 264{ 265 return zfcp_task_mgmt_function(scpnt, FCP_LOGICAL_UNIT_RESET); 266} 267 268static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) 269{ 270 return zfcp_task_mgmt_function(scpnt, FCP_TARGET_RESET); 271} 272 273static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) 274{ 275 struct zfcp_unit *unit = scpnt->device->hostdata; 276 struct zfcp_adapter *adapter = unit->port->adapter; 277 278 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt); 279 zfcp_erp_wait(adapter); 280 281 return SUCCESS; 282} 283 284int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) 285{ 286 struct ccw_dev_id dev_id; 287 288 if (adapter->scsi_host) 289 return 0; 290 291 ccw_device_get_id(adapter->ccw_device, &dev_id); 292 /* register adapter as SCSI host with mid layer of SCSI stack */ 293 adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template, 294 sizeof (struct zfcp_adapter *)); 295 if (!adapter->scsi_host) { 296 dev_err(&adapter->ccw_device->dev, 297 "Registering the FCP device with the " 298 "SCSI stack failed\n"); 299 return -EIO; 300 } 301 302 /* tell the SCSI stack some characteristics of this adapter */ 303 adapter->scsi_host->max_id = 1; 304 adapter->scsi_host->max_lun = 1; 305 adapter->scsi_host->max_channel = 0; 306 adapter->scsi_host->unique_id = dev_id.devno; 307 adapter->scsi_host->max_cmd_len = 255; 308 adapter->scsi_host->transportt = zfcp_data.scsi_transport_template; 309 310 adapter->scsi_host->hostdata[0] = (unsigned long) adapter; 311 312 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) { 313 scsi_host_put(adapter->scsi_host); 314 return -EIO; 315 } 316 317 return 0; 318} 319 320void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter) 321{ 322 struct Scsi_Host *shost; 323 struct zfcp_port *port; 324 325 shost = adapter->scsi_host; 326 if (!shost) 327 return; 328 329 read_lock_irq(&zfcp_data.config_lock); 330 list_for_each_entry(port, &adapter->port_list_head, list) 331 if (port->rport) 332 port->rport = NULL; 333 334 read_unlock_irq(&zfcp_data.config_lock); 335 fc_remove_host(shost); 336 scsi_remove_host(shost); 337 scsi_host_put(shost); 338 adapter->scsi_host = NULL; 339 340 return; 341} 342 343static struct fc_host_statistics* 344zfcp_init_fc_host_stats(struct zfcp_adapter *adapter) 345{ 346 struct fc_host_statistics *fc_stats; 347 348 if (!adapter->fc_stats) { 349 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL); 350 if (!fc_stats) 351 return NULL; 352 adapter->fc_stats = fc_stats; /* freed in adater_dequeue */ 353 } 354 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats)); 355 return adapter->fc_stats; 356} 357 358static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats, 359 struct fsf_qtcb_bottom_port *data, 360 struct fsf_qtcb_bottom_port *old) 361{ 362 fc_stats->seconds_since_last_reset = 363 data->seconds_since_last_reset - old->seconds_since_last_reset; 364 fc_stats->tx_frames = data->tx_frames - old->tx_frames; 365 fc_stats->tx_words = data->tx_words - old->tx_words; 366 fc_stats->rx_frames = data->rx_frames - old->rx_frames; 367 fc_stats->rx_words = data->rx_words - old->rx_words; 368 fc_stats->lip_count = data->lip - old->lip; 369 fc_stats->nos_count = data->nos - old->nos; 370 fc_stats->error_frames = data->error_frames - old->error_frames; 371 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames; 372 fc_stats->link_failure_count = data->link_failure - old->link_failure; 373 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync; 374 fc_stats->loss_of_signal_count = 375 data->loss_of_signal - old->loss_of_signal; 376 fc_stats->prim_seq_protocol_err_count = 377 data->psp_error_counts - old->psp_error_counts; 378 fc_stats->invalid_tx_word_count = 379 data->invalid_tx_words - old->invalid_tx_words; 380 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs; 381 fc_stats->fcp_input_requests = 382 data->input_requests - old->input_requests; 383 fc_stats->fcp_output_requests = 384 data->output_requests - old->output_requests; 385 fc_stats->fcp_control_requests = 386 data->control_requests - old->control_requests; 387 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb; 388 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb; 389} 390 391static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats, 392 struct fsf_qtcb_bottom_port *data) 393{ 394 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset; 395 fc_stats->tx_frames = data->tx_frames; 396 fc_stats->tx_words = data->tx_words; 397 fc_stats->rx_frames = data->rx_frames; 398 fc_stats->rx_words = data->rx_words; 399 fc_stats->lip_count = data->lip; 400 fc_stats->nos_count = data->nos; 401 fc_stats->error_frames = data->error_frames; 402 fc_stats->dumped_frames = data->dumped_frames; 403 fc_stats->link_failure_count = data->link_failure; 404 fc_stats->loss_of_sync_count = data->loss_of_sync; 405 fc_stats->loss_of_signal_count = data->loss_of_signal; 406 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts; 407 fc_stats->invalid_tx_word_count = data->invalid_tx_words; 408 fc_stats->invalid_crc_count = data->invalid_crcs; 409 fc_stats->fcp_input_requests = data->input_requests; 410 fc_stats->fcp_output_requests = data->output_requests; 411 fc_stats->fcp_control_requests = data->control_requests; 412 fc_stats->fcp_input_megabytes = data->input_mb; 413 fc_stats->fcp_output_megabytes = data->output_mb; 414} 415 416static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host) 417{ 418 struct zfcp_adapter *adapter; 419 struct fc_host_statistics *fc_stats; 420 struct fsf_qtcb_bottom_port *data; 421 int ret; 422 423 adapter = (struct zfcp_adapter *)host->hostdata[0]; 424 fc_stats = zfcp_init_fc_host_stats(adapter); 425 if (!fc_stats) 426 return NULL; 427 428 data = kzalloc(sizeof(*data), GFP_KERNEL); 429 if (!data) 430 return NULL; 431 432 ret = zfcp_fsf_exchange_port_data_sync(adapter, data); 433 if (ret) { 434 kfree(data); 435 return NULL; 436 } 437 438 if (adapter->stats_reset && 439 ((jiffies/HZ - adapter->stats_reset) < 440 data->seconds_since_last_reset)) 441 zfcp_adjust_fc_host_stats(fc_stats, data, 442 adapter->stats_reset_data); 443 else 444 zfcp_set_fc_host_stats(fc_stats, data); 445 446 kfree(data); 447 return fc_stats; 448} 449 450static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost) 451{ 452 struct zfcp_adapter *adapter; 453 struct fsf_qtcb_bottom_port *data; 454 int ret; 455 456 adapter = (struct zfcp_adapter *)shost->hostdata[0]; 457 data = kzalloc(sizeof(*data), GFP_KERNEL); 458 if (!data) 459 return; 460 461 ret = zfcp_fsf_exchange_port_data_sync(adapter, data); 462 if (ret) 463 kfree(data); 464 else { 465 adapter->stats_reset = jiffies/HZ; 466 kfree(adapter->stats_reset_data); 467 adapter->stats_reset_data = data; /* finally freed in 468 adapter_dequeue */ 469 } 470} 471 472static void zfcp_get_host_port_state(struct Scsi_Host *shost) 473{ 474 struct zfcp_adapter *adapter = 475 (struct zfcp_adapter *)shost->hostdata[0]; 476 int status = atomic_read(&adapter->status); 477 478 if ((status & ZFCP_STATUS_COMMON_RUNNING) && 479 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)) 480 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 481 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) 482 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 483 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED) 484 fc_host_port_state(shost) = FC_PORTSTATE_ERROR; 485 else 486 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 487} 488 489static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 490{ 491 rport->dev_loss_tmo = timeout; 492} 493 494/** 495 * zfcp_scsi_dev_loss_tmo_callbk - Free any reference to rport 496 * @rport: The rport that is about to be deleted. 497 */ 498static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport) 499{ 500 struct zfcp_port *port; 501 502 write_lock_irq(&zfcp_data.config_lock); 503 port = rport->dd_data; 504 if (port) 505 port->rport = NULL; 506 write_unlock_irq(&zfcp_data.config_lock); 507} 508 509/** 510 * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport 511 * @rport: The FC rport where to teminate I/O 512 * 513 * Abort all pending SCSI commands for a port by closing the 514 * port. Using a reopen for avoids a conflict with a shutdown 515 * overwriting a reopen. 516 */ 517static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) 518{ 519 struct zfcp_port *port; 520 521 write_lock_irq(&zfcp_data.config_lock); 522 port = rport->dd_data; 523 if (port) 524 zfcp_port_get(port); 525 write_unlock_irq(&zfcp_data.config_lock); 526 527 if (port) { 528 zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL); 529 zfcp_port_put(port); 530 } 531} 532 533static void zfcp_scsi_rport_register(struct zfcp_port *port) 534{ 535 struct fc_rport_identifiers ids; 536 struct fc_rport *rport; 537 538 if (port->rport) 539 return; 540 541 ids.node_name = port->wwnn; 542 ids.port_name = port->wwpn; 543 ids.port_id = port->d_id; 544 ids.roles = FC_RPORT_ROLE_FCP_TARGET; 545 546 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); 547 if (!rport) { 548 dev_err(&port->adapter->ccw_device->dev, 549 "Registering port 0x%016Lx failed\n", 550 (unsigned long long)port->wwpn); 551 return; 552 } 553 554 rport->dd_data = port; 555 rport->maxframe_size = port->maxframe_size; 556 rport->supported_classes = port->supported_classes; 557 port->rport = rport; 558} 559 560static void zfcp_scsi_rport_block(struct zfcp_port *port) 561{ 562 struct fc_rport *rport = port->rport; 563 564 if (rport) { 565 fc_remote_port_delete(rport); 566 port->rport = NULL; 567 } 568} 569 570void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) 571{ 572 zfcp_port_get(port); 573 port->rport_task = RPORT_ADD; 574 575 if (!queue_work(zfcp_data.work_queue, &port->rport_work)) 576 zfcp_port_put(port); 577} 578 579void zfcp_scsi_schedule_rport_block(struct zfcp_port *port) 580{ 581 zfcp_port_get(port); 582 port->rport_task = RPORT_DEL; 583 584 if (port->rport && queue_work(zfcp_data.work_queue, &port->rport_work)) 585 return; 586 587 zfcp_port_put(port); 588} 589 590void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter) 591{ 592 struct zfcp_port *port; 593 594 list_for_each_entry(port, &adapter->port_list_head, list) 595 zfcp_scsi_schedule_rport_block(port); 596} 597 598void zfcp_scsi_rport_work(struct work_struct *work) 599{ 600 struct zfcp_port *port = container_of(work, struct zfcp_port, 601 rport_work); 602 603 while (port->rport_task) { 604 if (port->rport_task == RPORT_ADD) { 605 port->rport_task = RPORT_NONE; 606 zfcp_scsi_rport_register(port); 607 } else { 608 port->rport_task = RPORT_NONE; 609 zfcp_scsi_rport_block(port); 610 } 611 } 612 613 zfcp_port_put(port); 614} 615 616 617void zfcp_scsi_scan(struct work_struct *work) 618{ 619 struct zfcp_unit *unit = container_of(work, struct zfcp_unit, 620 scsi_work); 621 struct fc_rport *rport; 622 623 flush_work(&unit->port->rport_work); 624 rport = unit->port->rport; 625 626 if (rport && rport->port_state == FC_PORTSTATE_ONLINE) 627 scsi_scan_target(&rport->dev, 0, rport->scsi_target_id, 628 scsilun_to_int((struct scsi_lun *) 629 &unit->fcp_lun), 0); 630 631 zfcp_unit_put(unit); 632} 633 634static int zfcp_execute_fc_job(struct fc_bsg_job *job) 635{ 636 switch (job->request->msgcode) { 637 case FC_BSG_RPT_ELS: 638 case FC_BSG_HST_ELS_NOLOGIN: 639 return zfcp_fc_execute_els_fc_job(job); 640 case FC_BSG_RPT_CT: 641 case FC_BSG_HST_CT: 642 return zfcp_fc_execute_ct_fc_job(job); 643 default: 644 return -EINVAL; 645 } 646} 647 648struct fc_function_template zfcp_transport_functions = { 649 .show_starget_port_id = 1, 650 .show_starget_port_name = 1, 651 .show_starget_node_name = 1, 652 .show_rport_supported_classes = 1, 653 .show_rport_maxframe_size = 1, 654 .show_rport_dev_loss_tmo = 1, 655 .show_host_node_name = 1, 656 .show_host_port_name = 1, 657 .show_host_permanent_port_name = 1, 658 .show_host_supported_classes = 1, 659 .show_host_supported_speeds = 1, 660 .show_host_maxframe_size = 1, 661 .show_host_serial_number = 1, 662 .get_fc_host_stats = zfcp_get_fc_host_stats, 663 .reset_fc_host_stats = zfcp_reset_fc_host_stats, 664 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo, 665 .get_host_port_state = zfcp_get_host_port_state, 666 .dev_loss_tmo_callbk = zfcp_scsi_dev_loss_tmo_callbk, 667 .terminate_rport_io = zfcp_scsi_terminate_rport_io, 668 .show_host_port_state = 1, 669 .bsg_request = zfcp_execute_fc_job, 670 /* no functions registered for following dynamic attributes but 671 directly set by LLDD */ 672 .show_host_port_type = 1, 673 .show_host_speed = 1, 674 .show_host_port_id = 1, 675 .disable_target_scan = 1, 676}; 677 678struct zfcp_data zfcp_data = { 679 .scsi_host_template = { 680 .name = "zfcp", 681 .module = THIS_MODULE, 682 .proc_name = "zfcp", 683 .change_queue_depth = zfcp_scsi_change_queue_depth, 684 .slave_alloc = zfcp_scsi_slave_alloc, 685 .slave_configure = zfcp_scsi_slave_configure, 686 .slave_destroy = zfcp_scsi_slave_destroy, 687 .queuecommand = zfcp_scsi_queuecommand, 688 .eh_abort_handler = zfcp_scsi_eh_abort_handler, 689 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler, 690 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler, 691 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler, 692 .can_queue = 4096, 693 .this_id = -1, 694 .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ, 695 .cmd_per_lun = 1, 696 .use_clustering = 1, 697 .sdev_attrs = zfcp_sysfs_sdev_attrs, 698 .max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8), 699 .shost_attrs = zfcp_sysfs_shost_attrs, 700 }, 701}; 702