1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/dma-mapping.h> 27 #include <linux/idr.h> 28 #include <linux/interrupt.h> 29 #include <linux/kthread.h> 30 #include <linux/pci.h> 31 #include <linux/slab.h> 32 #include <linux/spinlock.h> 33 #include <linux/sched/signal.h> 34 35 #include <scsi/scsi.h> 36 #include <scsi/scsi_device.h> 37 #include <scsi/scsi_host.h> 38 #include <scsi/scsi_transport_fc.h> 39 40 #include "lpfc_hw4.h" 41 #include "lpfc_hw.h" 42 #include "lpfc_sli.h" 43 #include "lpfc_sli4.h" 44 #include "lpfc_nl.h" 45 #include "lpfc_disc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_version.h" 51 #include "lpfc_vport.h" 52 lpfc_vport_set_state(struct lpfc_vport * vport,enum fc_vport_state new_state)53 inline void lpfc_vport_set_state(struct lpfc_vport *vport, 54 enum fc_vport_state new_state) 55 { 56 struct fc_vport *fc_vport = vport->fc_vport; 57 58 if (fc_vport) { 59 /* 60 * When the transport defines fc_vport_set state we will replace 61 * this code with the following line 62 */ 63 /* fc_vport_set_state(fc_vport, new_state); */ 64 if (new_state != FC_VPORT_INITIALIZING) 65 fc_vport->vport_last_state = fc_vport->vport_state; 66 fc_vport->vport_state = new_state; 67 } 68 69 /* for all the error states we will set the invternal state to FAILED */ 70 switch (new_state) { 71 case FC_VPORT_NO_FABRIC_SUPP: 72 case FC_VPORT_NO_FABRIC_RSCS: 73 case FC_VPORT_FABRIC_LOGOUT: 74 case FC_VPORT_FABRIC_REJ_WWN: 75 case FC_VPORT_FAILED: 76 vport->port_state = LPFC_VPORT_FAILED; 77 break; 78 case FC_VPORT_LINKDOWN: 79 vport->port_state = LPFC_VPORT_UNKNOWN; 80 break; 81 default: 82 /* do nothing */ 83 break; 84 } 85 } 86 87 int lpfc_alloc_vpi(struct lpfc_hba * phba)88 lpfc_alloc_vpi(struct lpfc_hba *phba) 89 { 90 unsigned long vpi; 91 92 spin_lock_irq(&phba->hbalock); 93 /* Start at bit 1 because vpi zero is reserved for the physical port */ 94 vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1); 95 if (vpi > phba->max_vpi) 96 vpi = 0; 97 else 98 set_bit(vpi, phba->vpi_bmask); 99 if (phba->sli_rev == LPFC_SLI_REV4) 100 phba->sli4_hba.max_cfg_param.vpi_used++; 101 spin_unlock_irq(&phba->hbalock); 102 return vpi; 103 } 104 105 static void lpfc_free_vpi(struct lpfc_hba * phba,int vpi)106 lpfc_free_vpi(struct lpfc_hba *phba, int vpi) 107 { 108 if (vpi == 0) 109 return; 110 spin_lock_irq(&phba->hbalock); 111 clear_bit(vpi, phba->vpi_bmask); 112 if (phba->sli_rev == LPFC_SLI_REV4) 113 phba->sli4_hba.max_cfg_param.vpi_used--; 114 spin_unlock_irq(&phba->hbalock); 115 } 116 117 static int lpfc_vport_sparm(struct lpfc_hba * phba,struct lpfc_vport * vport)118 lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport) 119 { 120 LPFC_MBOXQ_t *pmb; 121 MAILBOX_t *mb; 122 struct lpfc_dmabuf *mp; 123 int rc; 124 125 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 126 if (!pmb) { 127 return -ENOMEM; 128 } 129 mb = &pmb->u.mb; 130 131 rc = lpfc_read_sparam(phba, pmb, vport->vpi); 132 if (rc) { 133 mempool_free(pmb, phba->mbox_mem_pool); 134 return -ENOMEM; 135 } 136 137 /* 138 * Wait for the read_sparams mailbox to complete. Driver needs 139 * this per vport to start the FDISC. If the mailbox fails, 140 * just cleanup and return an error unless the failure is a 141 * mailbox timeout. For MBX_TIMEOUT, allow the default 142 * mbox completion handler to take care of the cleanup. This 143 * is safe as the mailbox command isn't one that triggers 144 * another mailbox. 145 */ 146 pmb->vport = vport; 147 rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2); 148 if (rc != MBX_SUCCESS) { 149 if (signal_pending(current)) { 150 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 151 "1830 Signal aborted mbxCmd x%x\n", 152 mb->mbxCommand); 153 if (rc != MBX_TIMEOUT) 154 lpfc_mbox_rsrc_cleanup(phba, pmb, 155 MBOX_THD_UNLOCKED); 156 return -EINTR; 157 } else { 158 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 159 "1818 VPort failed init, mbxCmd x%x " 160 "READ_SPARM mbxStatus x%x, rc = x%x\n", 161 mb->mbxCommand, mb->mbxStatus, rc); 162 if (rc != MBX_TIMEOUT) 163 lpfc_mbox_rsrc_cleanup(phba, pmb, 164 MBOX_THD_UNLOCKED); 165 return -EIO; 166 } 167 } 168 169 mp = pmb->ctx_buf; 170 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm)); 171 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 172 sizeof (struct lpfc_name)); 173 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 174 sizeof (struct lpfc_name)); 175 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 176 return 0; 177 } 178 179 static int lpfc_valid_wwn_format(struct lpfc_hba * phba,struct lpfc_name * wwn,const char * name_type)180 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn, 181 const char *name_type) 182 { 183 /* ensure that IEEE format 1 addresses 184 * contain zeros in bits 59-48 185 */ 186 if (!((wwn->u.wwn[0] >> 4) == 1 && 187 ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0))) 188 return 1; 189 190 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 191 "1822 Invalid %s: %02x:%02x:%02x:%02x:" 192 "%02x:%02x:%02x:%02x\n", 193 name_type, 194 wwn->u.wwn[0], wwn->u.wwn[1], 195 wwn->u.wwn[2], wwn->u.wwn[3], 196 wwn->u.wwn[4], wwn->u.wwn[5], 197 wwn->u.wwn[6], wwn->u.wwn[7]); 198 return 0; 199 } 200 201 static int lpfc_unique_wwpn(struct lpfc_hba * phba,struct lpfc_vport * new_vport)202 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport) 203 { 204 struct lpfc_vport *vport; 205 unsigned long flags; 206 207 spin_lock_irqsave(&phba->port_list_lock, flags); 208 list_for_each_entry(vport, &phba->port_list, listentry) { 209 if (vport == new_vport) 210 continue; 211 /* If they match, return not unique */ 212 if (memcmp(&vport->fc_sparam.portName, 213 &new_vport->fc_sparam.portName, 214 sizeof(struct lpfc_name)) == 0) { 215 spin_unlock_irqrestore(&phba->port_list_lock, flags); 216 return 0; 217 } 218 } 219 spin_unlock_irqrestore(&phba->port_list_lock, flags); 220 return 1; 221 } 222 223 /** 224 * lpfc_discovery_wait - Wait for driver discovery to quiesce 225 * @vport: The virtual port for which this call is being executed. 226 * 227 * This driver calls this routine specifically from lpfc_vport_delete 228 * to enforce a synchronous execution of vport 229 * delete relative to discovery activities. The 230 * lpfc_vport_delete routine should not return until it 231 * can reasonably guarantee that discovery has quiesced. 232 * Post FDISC LOGO, the driver must wait until its SAN teardown is 233 * complete and all resources recovered before allowing 234 * cleanup. 235 * 236 * This routine does not require any locks held. 237 **/ lpfc_discovery_wait(struct lpfc_vport * vport)238 static void lpfc_discovery_wait(struct lpfc_vport *vport) 239 { 240 struct lpfc_hba *phba = vport->phba; 241 unsigned long wait_time_max; 242 unsigned long start_time; 243 244 /* 245 * The time constraint on this loop is a balance between the 246 * fabric RA_TOV value and dev_loss tmo. The driver's 247 * devloss_tmo is 10 giving this loop a 3x multiplier minimally. 248 */ 249 wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000); 250 wait_time_max += jiffies; 251 start_time = jiffies; 252 while (time_before(jiffies, wait_time_max)) { 253 if ((vport->num_disc_nodes > 0) || 254 test_bit(FC_RSCN_MODE, &vport->fc_flag) || 255 test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag) || 256 test_bit(FC_NLP_MORE, &vport->fc_flag) || 257 test_bit(FC_RSCN_DEFERRED, &vport->fc_flag) || 258 test_bit(FC_NDISC_ACTIVE, &vport->fc_flag) || 259 test_bit(FC_DISC_TMO, &vport->fc_flag) || 260 ((vport->port_state > LPFC_VPORT_FAILED) && 261 (vport->port_state < LPFC_VPORT_READY))) { 262 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT, 263 "1833 Vport discovery quiesce Wait: " 264 "state x%x fc_flags x%lx " 265 "num_nodes x%x, waiting 1000 msecs " 266 "total wait msecs x%x\n", 267 vport->port_state, vport->fc_flag, 268 vport->num_disc_nodes, 269 jiffies_to_msecs(jiffies - start_time)); 270 msleep(1000); 271 } else { 272 /* Base case. Wait variants satisfied. Break out */ 273 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT, 274 "1834 Vport discovery quiesced: " 275 "state x%x fc_flags x%lx " 276 "wait msecs x%x\n", 277 vport->port_state, vport->fc_flag, 278 jiffies_to_msecs(jiffies 279 - start_time)); 280 break; 281 } 282 } 283 284 if (time_after(jiffies, wait_time_max)) 285 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 286 "1835 Vport discovery quiesce failed:" 287 " state x%x fc_flags x%lx wait msecs x%x\n", 288 vport->port_state, vport->fc_flag, 289 jiffies_to_msecs(jiffies - start_time)); 290 } 291 292 int lpfc_vport_create(struct fc_vport * fc_vport,bool disable)293 lpfc_vport_create(struct fc_vport *fc_vport, bool disable) 294 { 295 struct lpfc_nodelist *ndlp; 296 struct Scsi_Host *shost = fc_vport->shost; 297 struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata; 298 struct lpfc_hba *phba = pport->phba; 299 struct lpfc_vport *vport = NULL; 300 int instance; 301 int vpi; 302 int rc = VPORT_ERROR; 303 int status; 304 305 if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) { 306 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 307 "1808 Create VPORT failed: " 308 "NPIV is not enabled: SLImode:%d\n", 309 phba->sli_rev); 310 rc = VPORT_INVAL; 311 goto error_out; 312 } 313 314 /* NPIV is not supported if HBA has NVME Target enabled */ 315 if (phba->nvmet_support) { 316 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 317 "3189 Create VPORT failed: " 318 "NPIV is not supported on NVME Target\n"); 319 rc = VPORT_INVAL; 320 goto error_out; 321 } 322 323 vpi = lpfc_alloc_vpi(phba); 324 if (vpi == 0) { 325 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 326 "1809 Create VPORT failed: " 327 "Max VPORTs (%d) exceeded\n", 328 phba->max_vpi); 329 rc = VPORT_NORESOURCES; 330 goto error_out; 331 } 332 333 /* Assign an unused board number */ 334 if ((instance = lpfc_get_instance()) < 0) { 335 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 336 "1810 Create VPORT failed: Cannot get " 337 "instance number\n"); 338 lpfc_free_vpi(phba, vpi); 339 rc = VPORT_NORESOURCES; 340 goto error_out; 341 } 342 343 vport = lpfc_create_port(phba, instance, &fc_vport->dev); 344 if (!vport) { 345 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 346 "1811 Create VPORT failed: vpi x%x\n", vpi); 347 lpfc_free_vpi(phba, vpi); 348 rc = VPORT_NORESOURCES; 349 goto error_out; 350 } 351 352 vport->vpi = vpi; 353 lpfc_debugfs_initialize(vport); 354 355 if ((status = lpfc_vport_sparm(phba, vport))) { 356 if (status == -EINTR) { 357 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 358 "1831 Create VPORT Interrupted.\n"); 359 rc = VPORT_ERROR; 360 } else { 361 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 362 "1813 Create VPORT failed. " 363 "Cannot get sparam\n"); 364 rc = VPORT_NORESOURCES; 365 } 366 lpfc_free_vpi(phba, vpi); 367 destroy_port(vport); 368 goto error_out; 369 } 370 371 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); 372 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); 373 374 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8); 375 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8); 376 377 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") || 378 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) { 379 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 380 "1821 Create VPORT failed. " 381 "Invalid WWN format\n"); 382 lpfc_free_vpi(phba, vpi); 383 destroy_port(vport); 384 rc = VPORT_INVAL; 385 goto error_out; 386 } 387 388 if (!lpfc_unique_wwpn(phba, vport)) { 389 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 390 "1823 Create VPORT failed. " 391 "Duplicate WWN on HBA\n"); 392 lpfc_free_vpi(phba, vpi); 393 destroy_port(vport); 394 rc = VPORT_INVAL; 395 goto error_out; 396 } 397 398 /* Create binary sysfs attribute for vport */ 399 lpfc_alloc_sysfs_attr(vport); 400 401 /* Set the DFT_LUN_Q_DEPTH accordingly */ 402 vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth; 403 404 /* Only the physical port can support NVME for now */ 405 vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP; 406 407 *(struct lpfc_vport **)fc_vport->dd_data = vport; 408 vport->fc_vport = fc_vport; 409 410 /* At this point we are fully registered with SCSI Layer. */ 411 set_bit(FC_ALLOW_FDMI, &vport->load_flag); 412 if (phba->cfg_enable_SmartSAN || 413 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { 414 /* Setup appropriate attribute masks */ 415 vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask; 416 vport->fdmi_port_mask = phba->pport->fdmi_port_mask; 417 } 418 419 /* 420 * In SLI4, the vpi must be activated before it can be used 421 * by the port. 422 */ 423 if ((phba->sli_rev == LPFC_SLI_REV4) && 424 test_bit(FC_VFI_REGISTERED, &pport->fc_flag)) { 425 rc = lpfc_sli4_init_vpi(vport); 426 if (rc) { 427 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 428 "1838 Failed to INIT_VPI on vpi %d " 429 "status %d\n", vpi, rc); 430 rc = VPORT_NORESOURCES; 431 lpfc_free_vpi(phba, vpi); 432 goto error_out; 433 } 434 } else if (phba->sli_rev == LPFC_SLI_REV4) { 435 /* 436 * Driver cannot INIT_VPI now. Set the flags to 437 * init_vpi when reg_vfi complete. 438 */ 439 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 440 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 441 rc = VPORT_OK; 442 goto out; 443 } 444 445 if ((phba->link_state < LPFC_LINK_UP) || 446 (pport->port_state < LPFC_FABRIC_CFG_LINK) || 447 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { 448 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 449 rc = VPORT_OK; 450 goto out; 451 } 452 453 if (disable) { 454 lpfc_vport_set_state(vport, FC_VPORT_DISABLED); 455 rc = VPORT_OK; 456 goto out; 457 } 458 459 /* Use the Physical nodes Fabric NDLP to determine if the link is 460 * up and ready to FDISC. 461 */ 462 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 463 if (ndlp && 464 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 465 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { 466 lpfc_set_disctmo(vport); 467 lpfc_initial_fdisc(vport); 468 } else { 469 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 470 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 471 "0262 No NPIV Fabric support\n"); 472 } 473 } else { 474 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 475 } 476 rc = VPORT_OK; 477 478 out: 479 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 480 "1825 Vport Created.\n"); 481 lpfc_host_attrib_init(lpfc_shost_from_vport(vport)); 482 error_out: 483 return rc; 484 } 485 486 static int lpfc_send_npiv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)487 lpfc_send_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 488 { 489 int rc; 490 struct lpfc_hba *phba = vport->phba; 491 492 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 493 494 spin_lock_irq(&ndlp->lock); 495 if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO) && 496 !ndlp->logo_waitq) { 497 ndlp->logo_waitq = &waitq; 498 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 499 ndlp->nlp_flag |= NLP_ISSUE_LOGO; 500 ndlp->save_flags |= NLP_WAIT_FOR_LOGO; 501 } 502 spin_unlock_irq(&ndlp->lock); 503 rc = lpfc_issue_els_npiv_logo(vport, ndlp); 504 if (!rc) { 505 wait_event_timeout(waitq, 506 (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO)), 507 msecs_to_jiffies(phba->fc_ratov * 2000)); 508 509 if (!(ndlp->save_flags & NLP_WAIT_FOR_LOGO)) 510 goto logo_cmpl; 511 /* LOGO wait failed. Correct status. */ 512 rc = -EINTR; 513 } else { 514 rc = -EIO; 515 } 516 517 /* Error - clean up node flags. */ 518 spin_lock_irq(&ndlp->lock); 519 ndlp->nlp_flag &= ~NLP_ISSUE_LOGO; 520 ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO; 521 spin_unlock_irq(&ndlp->lock); 522 523 logo_cmpl: 524 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT, 525 "1824 Issue LOGO completes with status %d\n", 526 rc); 527 spin_lock_irq(&ndlp->lock); 528 ndlp->logo_waitq = NULL; 529 spin_unlock_irq(&ndlp->lock); 530 return rc; 531 } 532 533 static int disable_vport(struct fc_vport * fc_vport)534 disable_vport(struct fc_vport *fc_vport) 535 { 536 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 537 struct lpfc_hba *phba = vport->phba; 538 struct lpfc_nodelist *ndlp = NULL; 539 540 /* Can't disable during an outstanding delete. */ 541 if (test_bit(FC_UNLOADING, &vport->load_flag)) 542 return 0; 543 544 ndlp = lpfc_findnode_did(vport, Fabric_DID); 545 if (ndlp && phba->link_state >= LPFC_LINK_UP) 546 (void)lpfc_send_npiv_logo(vport, ndlp); 547 548 lpfc_sli_host_down(vport); 549 lpfc_cleanup_rpis(vport, 0); 550 551 lpfc_stop_vport_timers(vport); 552 lpfc_unreg_all_rpis(vport); 553 lpfc_unreg_default_rpis(vport); 554 /* 555 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the 556 * scsi_host_put() to release the vport. 557 */ 558 lpfc_mbx_unreg_vpi(vport); 559 if (phba->sli_rev == LPFC_SLI_REV4) 560 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 561 562 lpfc_vport_set_state(vport, FC_VPORT_DISABLED); 563 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 564 "1826 Vport Disabled.\n"); 565 return VPORT_OK; 566 } 567 568 static int enable_vport(struct fc_vport * fc_vport)569 enable_vport(struct fc_vport *fc_vport) 570 { 571 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 572 struct lpfc_hba *phba = vport->phba; 573 struct lpfc_nodelist *ndlp = NULL; 574 575 if ((phba->link_state < LPFC_LINK_UP) || 576 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { 577 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 578 return VPORT_OK; 579 } 580 581 set_bit(FC_LOADING, &vport->load_flag); 582 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag)) { 583 lpfc_issue_init_vpi(vport); 584 goto out; 585 } 586 587 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 588 589 /* Use the Physical nodes Fabric NDLP to determine if the link is 590 * up and ready to FDISC. 591 */ 592 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 593 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 594 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { 595 lpfc_set_disctmo(vport); 596 lpfc_initial_fdisc(vport); 597 } else { 598 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 599 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 600 "0264 No NPIV Fabric support\n"); 601 } 602 } else { 603 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 604 } 605 606 out: 607 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 608 "1827 Vport Enabled.\n"); 609 return VPORT_OK; 610 } 611 612 int lpfc_vport_disable(struct fc_vport * fc_vport,bool disable)613 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable) 614 { 615 if (disable) 616 return disable_vport(fc_vport); 617 else 618 return enable_vport(fc_vport); 619 } 620 621 int lpfc_vport_delete(struct fc_vport * fc_vport)622 lpfc_vport_delete(struct fc_vport *fc_vport) 623 { 624 struct lpfc_nodelist *ndlp = NULL; 625 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 626 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 627 struct lpfc_hba *phba = vport->phba; 628 int rc; 629 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); 630 631 if (vport->port_type == LPFC_PHYSICAL_PORT) { 632 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 633 "1812 vport_delete failed: Cannot delete " 634 "physical host\n"); 635 return VPORT_ERROR; 636 } 637 638 /* If the vport is a static vport fail the deletion. */ 639 if ((vport->vport_flag & STATIC_VPORT) && 640 !test_bit(FC_UNLOADING, &phba->pport->load_flag)) { 641 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 642 "1837 vport_delete failed: Cannot delete " 643 "static vport.\n"); 644 return VPORT_ERROR; 645 } 646 647 set_bit(FC_UNLOADING, &vport->load_flag); 648 649 /* 650 * If we are not unloading the driver then prevent the vport_delete 651 * from happening until after this vport's discovery is finished. 652 */ 653 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) { 654 int check_count = 0; 655 while (check_count < ((phba->fc_ratov * 3) + 3) && 656 vport->port_state > LPFC_VPORT_FAILED && 657 vport->port_state < LPFC_VPORT_READY) { 658 check_count++; 659 msleep(1000); 660 } 661 if (vport->port_state > LPFC_VPORT_FAILED && 662 vport->port_state < LPFC_VPORT_READY) 663 return -EAGAIN; 664 } 665 666 /* 667 * Take early refcount for outstanding I/O requests we schedule during 668 * delete processing for unreg_vpi. Always keep this before 669 * scsi_remove_host() as we can no longer obtain a reference through 670 * scsi_host_get() after scsi_host_remove as shost is set to SHOST_DEL. 671 */ 672 if (!scsi_host_get(shost)) 673 return VPORT_INVAL; 674 675 lpfc_free_sysfs_attr(vport); 676 lpfc_debugfs_terminate(vport); 677 678 /* Send the DA_ID and Fabric LOGO to cleanup Nameserver entries. */ 679 ndlp = lpfc_findnode_did(vport, Fabric_DID); 680 if (!ndlp) 681 goto skip_logo; 682 683 /* Send the DA_ID and Fabric LOGO to cleanup the NPIV fabric entries. */ 684 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && 685 phba->link_state >= LPFC_LINK_UP && 686 phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 687 if (vport->cfg_enable_da_id) { 688 /* Send DA_ID and wait for a completion. This is best 689 * effort. If the DA_ID fails, likely the fabric will 690 * "leak" NportIDs but at least the driver issued the 691 * command. 692 */ 693 ndlp = lpfc_findnode_did(vport, NameServer_DID); 694 if (!ndlp) 695 goto issue_logo; 696 697 spin_lock_irq(&ndlp->lock); 698 ndlp->da_id_waitq = &waitq; 699 ndlp->save_flags |= NLP_WAIT_FOR_DA_ID; 700 spin_unlock_irq(&ndlp->lock); 701 702 rc = lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0); 703 if (!rc) { 704 wait_event_timeout(waitq, 705 !(ndlp->save_flags & NLP_WAIT_FOR_DA_ID), 706 msecs_to_jiffies(phba->fc_ratov * 2000)); 707 } 708 709 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT | LOG_ELS, 710 "1829 DA_ID issue status %d. " 711 "SFlag x%x NState x%x, NFlag x%x " 712 "Rpi x%x\n", 713 rc, ndlp->save_flags, ndlp->nlp_state, 714 ndlp->nlp_flag, ndlp->nlp_rpi); 715 716 /* Remove the waitq and save_flags. It no 717 * longer matters if the wake happened. 718 */ 719 spin_lock_irq(&ndlp->lock); 720 ndlp->da_id_waitq = NULL; 721 ndlp->save_flags &= ~NLP_WAIT_FOR_DA_ID; 722 spin_unlock_irq(&ndlp->lock); 723 } 724 725 issue_logo: 726 /* 727 * If the vpi is not registered, then a valid FDISC doesn't 728 * exist and there is no need for a ELS LOGO. Just cleanup 729 * the ndlp. 730 */ 731 if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) 732 goto skip_logo; 733 734 /* Issue a Fabric LOGO to cleanup fabric resources. */ 735 ndlp = lpfc_findnode_did(vport, Fabric_DID); 736 if (!ndlp) 737 goto skip_logo; 738 739 rc = lpfc_send_npiv_logo(vport, ndlp); 740 if (rc) 741 goto skip_logo; 742 } 743 744 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 745 lpfc_discovery_wait(vport); 746 747 skip_logo: 748 749 /* Remove FC host to break driver binding. */ 750 fc_remove_host(shost); 751 scsi_remove_host(shost); 752 753 lpfc_cleanup(vport); 754 755 /* Remove scsi host now. The nodes are cleaned up. */ 756 lpfc_sli_host_down(vport); 757 lpfc_stop_vport_timers(vport); 758 759 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) { 760 lpfc_unreg_all_rpis(vport); 761 lpfc_unreg_default_rpis(vport); 762 /* 763 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) 764 * does the scsi_host_put() to release the vport. 765 */ 766 if (!(vport->vpi_state & LPFC_VPI_REGISTERED) || 767 lpfc_mbx_unreg_vpi(vport)) 768 scsi_host_put(shost); 769 } else { 770 scsi_host_put(shost); 771 } 772 773 lpfc_free_vpi(phba, vport->vpi); 774 vport->work_port_events = 0; 775 spin_lock_irq(&phba->port_list_lock); 776 list_del_init(&vport->listentry); 777 spin_unlock_irq(&phba->port_list_lock); 778 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 779 "1828 Vport Deleted.\n"); 780 scsi_host_put(shost); 781 return VPORT_OK; 782 } 783 784 struct lpfc_vport ** lpfc_create_vport_work_array(struct lpfc_hba * phba)785 lpfc_create_vport_work_array(struct lpfc_hba *phba) 786 { 787 struct lpfc_vport *port_iterator; 788 struct lpfc_vport **vports; 789 int index = 0; 790 vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *), 791 GFP_KERNEL); 792 if (vports == NULL) 793 return NULL; 794 spin_lock_irq(&phba->port_list_lock); 795 list_for_each_entry(port_iterator, &phba->port_list, listentry) { 796 if (test_bit(FC_UNLOADING, &port_iterator->load_flag)) 797 continue; 798 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) { 799 lpfc_printf_vlog(port_iterator, KERN_ERR, 800 LOG_TRACE_EVENT, 801 "1801 Create vport work array FAILED: " 802 "cannot do scsi_host_get\n"); 803 continue; 804 } 805 vports[index++] = port_iterator; 806 } 807 spin_unlock_irq(&phba->port_list_lock); 808 return vports; 809 } 810 811 void lpfc_destroy_vport_work_array(struct lpfc_hba * phba,struct lpfc_vport ** vports)812 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports) 813 { 814 int i; 815 if (vports == NULL) 816 return; 817 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 818 scsi_host_put(lpfc_shost_from_vport(vports[i])); 819 kfree(vports); 820 } 821 822