zfcp_scsi.c revision 4318e08c84e4916ac463002ffb7f9901ddb3c385
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 <linux/types.h> 13#include <scsi/fc/fc_fcp.h> 14#include <asm/atomic.h> 15#include "zfcp_ext.h" 16#include "zfcp_dbf.h" 17 18static unsigned int default_depth = 32; 19module_param_named(queue_depth, default_depth, uint, 0600); 20MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices"); 21 22static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth, 23 int reason) 24{ 25 switch (reason) { 26 case SCSI_QDEPTH_DEFAULT: 27 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); 28 break; 29 case SCSI_QDEPTH_QFULL: 30 scsi_track_queue_full(sdev, depth); 31 break; 32 case SCSI_QDEPTH_RAMP_UP: 33 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); 34 break; 35 default: 36 return -EOPNOTSUPP; 37 } 38 return sdev->queue_depth; 39} 40 41static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt) 42{ 43 struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata; 44 unit->device = NULL; 45 put_device(&unit->sysfs_device); 46} 47 48static int zfcp_scsi_slave_configure(struct scsi_device *sdp) 49{ 50 if (sdp->tagged_supported) 51 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth); 52 else 53 scsi_adjust_queue_depth(sdp, 0, 1); 54 return 0; 55} 56 57static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) 58{ 59 struct zfcp_adapter *adapter = 60 (struct zfcp_adapter *) scpnt->device->host->hostdata[0]; 61 set_host_byte(scpnt, result); 62 if ((scpnt->device != NULL) && (scpnt->device->host != NULL)) 63 zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL); 64 /* return directly */ 65 scpnt->scsi_done(scpnt); 66} 67 68static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt, 69 void (*done) (struct scsi_cmnd *)) 70{ 71 struct zfcp_unit *unit; 72 struct zfcp_adapter *adapter; 73 int status, scsi_result, ret; 74 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device)); 75 76 /* reset the status for this request */ 77 scpnt->result = 0; 78 scpnt->host_scribble = NULL; 79 scpnt->scsi_done = done; 80 81 /* 82 * figure out adapter and target device 83 * (stored there by zfcp_scsi_slave_alloc) 84 */ 85 adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0]; 86 unit = scpnt->device->hostdata; 87 88 BUG_ON(!adapter || (adapter != unit->port->adapter)); 89 BUG_ON(!scpnt->scsi_done); 90 91 if (unlikely(!unit)) { 92 zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT); 93 return 0; 94 } 95 96 scsi_result = fc_remote_port_chkready(rport); 97 if (unlikely(scsi_result)) { 98 scpnt->result = scsi_result; 99 zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL); 100 scpnt->scsi_done(scpnt); 101 return 0; 102 } 103 104 status = atomic_read(&unit->status); 105 if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) && 106 !(atomic_read(&unit->port->status) & 107 ZFCP_STATUS_COMMON_ERP_FAILED)) { 108 /* only unit access denied, but port is good 109 * not covered by FC transport, have to fail here */ 110 zfcp_scsi_command_fail(scpnt, DID_ERROR); 111 return 0; 112 } 113 114 if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) { 115 /* This could be either 116 * open unit pending: this is temporary, will result in 117 * open unit or ERP_FAILED, so retry command 118 * call to rport_delete pending: mimic retry from 119 * fc_remote_port_chkready until rport is BLOCKED 120 */ 121 zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY); 122 return 0; 123 } 124 125 ret = zfcp_fsf_send_fcp_command_task(unit, scpnt); 126 if (unlikely(ret == -EBUSY)) 127 return SCSI_MLQUEUE_DEVICE_BUSY; 128 else if (unlikely(ret < 0)) 129 return SCSI_MLQUEUE_HOST_BUSY; 130 131 return ret; 132} 133 134static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter, 135 unsigned int id, u64 lun) 136{ 137 unsigned long flags; 138 struct zfcp_port *port; 139 struct zfcp_unit *unit = NULL; 140 141 read_lock_irqsave(&adapter->port_list_lock, flags); 142 list_for_each_entry(port, &adapter->port_list, list) { 143 if (!port->rport || (id != port->rport->scsi_target_id)) 144 continue; 145 unit = zfcp_get_unit_by_lun(port, lun); 146 if (unit) 147 break; 148 } 149 read_unlock_irqrestore(&adapter->port_list_lock, flags); 150 151 return unit; 152} 153 154static int zfcp_scsi_slave_alloc(struct scsi_device *sdp) 155{ 156 struct zfcp_adapter *adapter; 157 struct zfcp_unit *unit; 158 u64 lun; 159 160 adapter = (struct zfcp_adapter *) sdp->host->hostdata[0]; 161 if (!adapter) 162 goto out; 163 164 int_to_scsilun(sdp->lun, (struct scsi_lun *)&lun); 165 unit = zfcp_unit_lookup(adapter, sdp->id, lun); 166 if (unit) { 167 sdp->hostdata = unit; 168 unit->device = sdp; 169 return 0; 170 } 171out: 172 return -ENXIO; 173} 174 175static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) 176{ 177 struct Scsi_Host *scsi_host = scpnt->device->host; 178 struct zfcp_adapter *adapter = 179 (struct zfcp_adapter *) scsi_host->hostdata[0]; 180 struct zfcp_unit *unit = scpnt->device->hostdata; 181 struct zfcp_fsf_req *old_req, *abrt_req; 182 unsigned long flags; 183 unsigned long old_reqid = (unsigned long) scpnt->host_scribble; 184 int retval = SUCCESS; 185 int retry = 3; 186 char *dbf_tag; 187 188 /* avoid race condition between late normal completion and abort */ 189 write_lock_irqsave(&adapter->abort_lock, flags); 190 191 spin_lock(&adapter->req_list_lock); 192 old_req = zfcp_reqlist_find(adapter, old_reqid); 193 spin_unlock(&adapter->req_list_lock); 194 if (!old_req) { 195 write_unlock_irqrestore(&adapter->abort_lock, flags); 196 zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL, 197 old_reqid); 198 return FAILED; /* completion could be in progress */ 199 } 200 old_req->data = NULL; 201 202 /* don't access old fsf_req after releasing the abort_lock */ 203 write_unlock_irqrestore(&adapter->abort_lock, flags); 204 205 while (retry--) { 206 abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit); 207 if (abrt_req) 208 break; 209 210 zfcp_erp_wait(adapter); 211 if (!(atomic_read(&adapter->status) & 212 ZFCP_STATUS_COMMON_RUNNING)) { 213 zfcp_dbf_scsi_abort("nres", adapter->dbf, scpnt, NULL, 214 old_reqid); 215 return SUCCESS; 216 } 217 } 218 if (!abrt_req) 219 return FAILED; 220 221 wait_for_completion(&abrt_req->completion); 222 223 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) 224 dbf_tag = "okay"; 225 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) 226 dbf_tag = "lte2"; 227 else { 228 dbf_tag = "fail"; 229 retval = FAILED; 230 } 231 zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid); 232 zfcp_fsf_req_free(abrt_req); 233 return retval; 234} 235 236static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) 237{ 238 struct zfcp_unit *unit = scpnt->device->hostdata; 239 struct zfcp_adapter *adapter = unit->port->adapter; 240 struct zfcp_fsf_req *fsf_req = NULL; 241 int retval = SUCCESS; 242 int retry = 3; 243 244 while (retry--) { 245 fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags); 246 if (fsf_req) 247 break; 248 249 zfcp_erp_wait(adapter); 250 if (!(atomic_read(&adapter->status) & 251 ZFCP_STATUS_COMMON_RUNNING)) { 252 zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt); 253 return SUCCESS; 254 } 255 } 256 if (!fsf_req) 257 return FAILED; 258 259 wait_for_completion(&fsf_req->completion); 260 261 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { 262 zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt); 263 retval = FAILED; 264 } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) { 265 zfcp_dbf_scsi_devreset("nsup", tm_flags, unit, scpnt); 266 retval = FAILED; 267 } else 268 zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt); 269 270 zfcp_fsf_req_free(fsf_req); 271 return retval; 272} 273 274static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) 275{ 276 return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET); 277} 278 279static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) 280{ 281 return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET); 282} 283 284static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) 285{ 286 struct zfcp_unit *unit = scpnt->device->hostdata; 287 struct zfcp_adapter *adapter = unit->port->adapter; 288 289 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt); 290 zfcp_erp_wait(adapter); 291 292 return SUCCESS; 293} 294 295int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) 296{ 297 struct ccw_dev_id dev_id; 298 299 if (adapter->scsi_host) 300 return 0; 301 302 ccw_device_get_id(adapter->ccw_device, &dev_id); 303 /* register adapter as SCSI host with mid layer of SCSI stack */ 304 adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template, 305 sizeof (struct zfcp_adapter *)); 306 if (!adapter->scsi_host) { 307 dev_err(&adapter->ccw_device->dev, 308 "Registering the FCP device with the " 309 "SCSI stack failed\n"); 310 return -EIO; 311 } 312 313 /* tell the SCSI stack some characteristics of this adapter */ 314 adapter->scsi_host->max_id = 1; 315 adapter->scsi_host->max_lun = 1; 316 adapter->scsi_host->max_channel = 0; 317 adapter->scsi_host->unique_id = dev_id.devno; 318 adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */ 319 adapter->scsi_host->transportt = zfcp_data.scsi_transport_template; 320 321 adapter->scsi_host->hostdata[0] = (unsigned long) adapter; 322 323 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) { 324 scsi_host_put(adapter->scsi_host); 325 return -EIO; 326 } 327 328 return 0; 329} 330 331void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter) 332{ 333 struct Scsi_Host *shost; 334 struct zfcp_port *port; 335 336 shost = adapter->scsi_host; 337 if (!shost) 338 return; 339 340 read_lock_irq(&adapter->port_list_lock); 341 list_for_each_entry(port, &adapter->port_list, list) 342 port->rport = NULL; 343 read_unlock_irq(&adapter->port_list_lock); 344 345 fc_remove_host(shost); 346 scsi_remove_host(shost); 347 scsi_host_put(shost); 348 adapter->scsi_host = NULL; 349 350 return; 351} 352 353static struct fc_host_statistics* 354zfcp_init_fc_host_stats(struct zfcp_adapter *adapter) 355{ 356 struct fc_host_statistics *fc_stats; 357 358 if (!adapter->fc_stats) { 359 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL); 360 if (!fc_stats) 361 return NULL; 362 adapter->fc_stats = fc_stats; /* freed in adapter_release */ 363 } 364 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats)); 365 return adapter->fc_stats; 366} 367 368static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats, 369 struct fsf_qtcb_bottom_port *data, 370 struct fsf_qtcb_bottom_port *old) 371{ 372 fc_stats->seconds_since_last_reset = 373 data->seconds_since_last_reset - old->seconds_since_last_reset; 374 fc_stats->tx_frames = data->tx_frames - old->tx_frames; 375 fc_stats->tx_words = data->tx_words - old->tx_words; 376 fc_stats->rx_frames = data->rx_frames - old->rx_frames; 377 fc_stats->rx_words = data->rx_words - old->rx_words; 378 fc_stats->lip_count = data->lip - old->lip; 379 fc_stats->nos_count = data->nos - old->nos; 380 fc_stats->error_frames = data->error_frames - old->error_frames; 381 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames; 382 fc_stats->link_failure_count = data->link_failure - old->link_failure; 383 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync; 384 fc_stats->loss_of_signal_count = 385 data->loss_of_signal - old->loss_of_signal; 386 fc_stats->prim_seq_protocol_err_count = 387 data->psp_error_counts - old->psp_error_counts; 388 fc_stats->invalid_tx_word_count = 389 data->invalid_tx_words - old->invalid_tx_words; 390 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs; 391 fc_stats->fcp_input_requests = 392 data->input_requests - old->input_requests; 393 fc_stats->fcp_output_requests = 394 data->output_requests - old->output_requests; 395 fc_stats->fcp_control_requests = 396 data->control_requests - old->control_requests; 397 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb; 398 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb; 399} 400 401static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats, 402 struct fsf_qtcb_bottom_port *data) 403{ 404 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset; 405 fc_stats->tx_frames = data->tx_frames; 406 fc_stats->tx_words = data->tx_words; 407 fc_stats->rx_frames = data->rx_frames; 408 fc_stats->rx_words = data->rx_words; 409 fc_stats->lip_count = data->lip; 410 fc_stats->nos_count = data->nos; 411 fc_stats->error_frames = data->error_frames; 412 fc_stats->dumped_frames = data->dumped_frames; 413 fc_stats->link_failure_count = data->link_failure; 414 fc_stats->loss_of_sync_count = data->loss_of_sync; 415 fc_stats->loss_of_signal_count = data->loss_of_signal; 416 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts; 417 fc_stats->invalid_tx_word_count = data->invalid_tx_words; 418 fc_stats->invalid_crc_count = data->invalid_crcs; 419 fc_stats->fcp_input_requests = data->input_requests; 420 fc_stats->fcp_output_requests = data->output_requests; 421 fc_stats->fcp_control_requests = data->control_requests; 422 fc_stats->fcp_input_megabytes = data->input_mb; 423 fc_stats->fcp_output_megabytes = data->output_mb; 424} 425 426static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host) 427{ 428 struct zfcp_adapter *adapter; 429 struct fc_host_statistics *fc_stats; 430 struct fsf_qtcb_bottom_port *data; 431 int ret; 432 433 adapter = (struct zfcp_adapter *)host->hostdata[0]; 434 fc_stats = zfcp_init_fc_host_stats(adapter); 435 if (!fc_stats) 436 return NULL; 437 438 data = kzalloc(sizeof(*data), GFP_KERNEL); 439 if (!data) 440 return NULL; 441 442 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); 443 if (ret) { 444 kfree(data); 445 return NULL; 446 } 447 448 if (adapter->stats_reset && 449 ((jiffies/HZ - adapter->stats_reset) < 450 data->seconds_since_last_reset)) 451 zfcp_adjust_fc_host_stats(fc_stats, data, 452 adapter->stats_reset_data); 453 else 454 zfcp_set_fc_host_stats(fc_stats, data); 455 456 kfree(data); 457 return fc_stats; 458} 459 460static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost) 461{ 462 struct zfcp_adapter *adapter; 463 struct fsf_qtcb_bottom_port *data; 464 int ret; 465 466 adapter = (struct zfcp_adapter *)shost->hostdata[0]; 467 data = kzalloc(sizeof(*data), GFP_KERNEL); 468 if (!data) 469 return; 470 471 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); 472 if (ret) 473 kfree(data); 474 else { 475 adapter->stats_reset = jiffies/HZ; 476 kfree(adapter->stats_reset_data); 477 adapter->stats_reset_data = data; /* finally freed in 478 adapter_release */ 479 } 480} 481 482static void zfcp_get_host_port_state(struct Scsi_Host *shost) 483{ 484 struct zfcp_adapter *adapter = 485 (struct zfcp_adapter *)shost->hostdata[0]; 486 int status = atomic_read(&adapter->status); 487 488 if ((status & ZFCP_STATUS_COMMON_RUNNING) && 489 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)) 490 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 491 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) 492 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 493 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED) 494 fc_host_port_state(shost) = FC_PORTSTATE_ERROR; 495 else 496 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 497} 498 499static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 500{ 501 rport->dev_loss_tmo = timeout; 502} 503 504/** 505 * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport 506 * @rport: The FC rport where to teminate I/O 507 * 508 * Abort all pending SCSI commands for a port by closing the 509 * port. Using a reopen avoiding a conflict with a shutdown 510 * overwriting a reopen. 511 */ 512static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) 513{ 514 struct zfcp_port *port; 515 struct Scsi_Host *shost = rport_to_shost(rport); 516 struct zfcp_adapter *adapter = 517 (struct zfcp_adapter *)shost->hostdata[0]; 518 519 port = zfcp_get_port_by_wwpn(adapter, rport->port_name); 520 521 if (port) { 522 zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL); 523 put_device(&port->sysfs_device); 524 } 525} 526 527static void zfcp_scsi_rport_register(struct zfcp_port *port) 528{ 529 struct fc_rport_identifiers ids; 530 struct fc_rport *rport; 531 532 if (port->rport) 533 return; 534 535 ids.node_name = port->wwnn; 536 ids.port_name = port->wwpn; 537 ids.port_id = port->d_id; 538 ids.roles = FC_RPORT_ROLE_FCP_TARGET; 539 540 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); 541 if (!rport) { 542 dev_err(&port->adapter->ccw_device->dev, 543 "Registering port 0x%016Lx failed\n", 544 (unsigned long long)port->wwpn); 545 return; 546 } 547 548 rport->maxframe_size = port->maxframe_size; 549 rport->supported_classes = port->supported_classes; 550 port->rport = rport; 551} 552 553static void zfcp_scsi_rport_block(struct zfcp_port *port) 554{ 555 struct fc_rport *rport = port->rport; 556 557 if (rport) { 558 fc_remote_port_delete(rport); 559 port->rport = NULL; 560 } 561} 562 563void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) 564{ 565 get_device(&port->sysfs_device); 566 port->rport_task = RPORT_ADD; 567 568 if (!queue_work(port->adapter->work_queue, &port->rport_work)) 569 put_device(&port->sysfs_device); 570} 571 572void zfcp_scsi_schedule_rport_block(struct zfcp_port *port) 573{ 574 get_device(&port->sysfs_device); 575 port->rport_task = RPORT_DEL; 576 577 if (port->rport && queue_work(port->adapter->work_queue, 578 &port->rport_work)) 579 return; 580 581 put_device(&port->sysfs_device); 582} 583 584void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter) 585{ 586 unsigned long flags; 587 struct zfcp_port *port; 588 589 read_lock_irqsave(&adapter->port_list_lock, flags); 590 list_for_each_entry(port, &adapter->port_list, list) 591 zfcp_scsi_schedule_rport_block(port); 592 read_unlock_irqrestore(&adapter->port_list_lock, flags); 593} 594 595void zfcp_scsi_rport_work(struct work_struct *work) 596{ 597 struct zfcp_port *port = container_of(work, struct zfcp_port, 598 rport_work); 599 600 while (port->rport_task) { 601 if (port->rport_task == RPORT_ADD) { 602 port->rport_task = RPORT_NONE; 603 zfcp_scsi_rport_register(port); 604 } else { 605 port->rport_task = RPORT_NONE; 606 zfcp_scsi_rport_block(port); 607 } 608 } 609 610 put_device(&port->sysfs_device); 611} 612 613 614void zfcp_scsi_scan(struct work_struct *work) 615{ 616 struct zfcp_unit *unit = container_of(work, struct zfcp_unit, 617 scsi_work); 618 struct fc_rport *rport; 619 620 flush_work(&unit->port->rport_work); 621 rport = unit->port->rport; 622 623 if (rport && rport->port_state == FC_PORTSTATE_ONLINE) 624 scsi_scan_target(&rport->dev, 0, rport->scsi_target_id, 625 scsilun_to_int((struct scsi_lun *) 626 &unit->fcp_lun), 0); 627 628 put_device(&unit->sysfs_device); 629} 630 631static int zfcp_execute_fc_job(struct fc_bsg_job *job) 632{ 633 switch (job->request->msgcode) { 634 case FC_BSG_RPT_ELS: 635 case FC_BSG_HST_ELS_NOLOGIN: 636 return zfcp_fc_execute_els_fc_job(job); 637 case FC_BSG_RPT_CT: 638 case FC_BSG_HST_CT: 639 return zfcp_fc_execute_ct_fc_job(job); 640 default: 641 return -EINVAL; 642 } 643} 644 645struct fc_function_template zfcp_transport_functions = { 646 .show_starget_port_id = 1, 647 .show_starget_port_name = 1, 648 .show_starget_node_name = 1, 649 .show_rport_supported_classes = 1, 650 .show_rport_maxframe_size = 1, 651 .show_rport_dev_loss_tmo = 1, 652 .show_host_node_name = 1, 653 .show_host_port_name = 1, 654 .show_host_permanent_port_name = 1, 655 .show_host_supported_classes = 1, 656 .show_host_supported_speeds = 1, 657 .show_host_maxframe_size = 1, 658 .show_host_serial_number = 1, 659 .get_fc_host_stats = zfcp_get_fc_host_stats, 660 .reset_fc_host_stats = zfcp_reset_fc_host_stats, 661 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo, 662 .get_host_port_state = zfcp_get_host_port_state, 663 .terminate_rport_io = zfcp_scsi_terminate_rport_io, 664 .show_host_port_state = 1, 665 .bsg_request = zfcp_execute_fc_job, 666 /* no functions registered for following dynamic attributes but 667 directly set by LLDD */ 668 .show_host_port_type = 1, 669 .show_host_speed = 1, 670 .show_host_port_id = 1, 671 .disable_target_scan = 1, 672}; 673 674struct zfcp_data zfcp_data = { 675 .scsi_host_template = { 676 .name = "zfcp", 677 .module = THIS_MODULE, 678 .proc_name = "zfcp", 679 .change_queue_depth = zfcp_scsi_change_queue_depth, 680 .slave_alloc = zfcp_scsi_slave_alloc, 681 .slave_configure = zfcp_scsi_slave_configure, 682 .slave_destroy = zfcp_scsi_slave_destroy, 683 .queuecommand = zfcp_scsi_queuecommand, 684 .eh_abort_handler = zfcp_scsi_eh_abort_handler, 685 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler, 686 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler, 687 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler, 688 .can_queue = 4096, 689 .this_id = -1, 690 .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ, 691 .cmd_per_lun = 1, 692 .use_clustering = 1, 693 .sdev_attrs = zfcp_sysfs_sdev_attrs, 694 .max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8), 695 .shost_attrs = zfcp_sysfs_shost_attrs, 696 }, 697}; 698