1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 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 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 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 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 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 * Grab buffer pointer and clear context1 so we can use 139 * lpfc_sli_issue_box_wait 140 */ 141 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 142 pmb->ctx_buf = NULL; 143 144 pmb->vport = vport; 145 rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2); 146 if (rc != MBX_SUCCESS) { 147 if (signal_pending(current)) { 148 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT, 149 "1830 Signal aborted mbxCmd x%x\n", 150 mb->mbxCommand); 151 lpfc_mbuf_free(phba, mp->virt, mp->phys); 152 kfree(mp); 153 if (rc != MBX_TIMEOUT) 154 mempool_free(pmb, phba->mbox_mem_pool); 155 return -EINTR; 156 } else { 157 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT, 158 "1818 VPort failed init, mbxCmd x%x " 159 "READ_SPARM mbxStatus x%x, rc = x%x\n", 160 mb->mbxCommand, mb->mbxStatus, rc); 161 lpfc_mbuf_free(phba, mp->virt, mp->phys); 162 kfree(mp); 163 if (rc != MBX_TIMEOUT) 164 mempool_free(pmb, phba->mbox_mem_pool); 165 return -EIO; 166 } 167 } 168 169 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm)); 170 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 171 sizeof (struct lpfc_name)); 172 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 173 sizeof (struct lpfc_name)); 174 175 lpfc_mbuf_free(phba, mp->virt, mp->phys); 176 kfree(mp); 177 mempool_free(pmb, phba->mbox_mem_pool); 178 179 return 0; 180 } 181 182 static int 183 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn, 184 const char *name_type) 185 { 186 /* ensure that IEEE format 1 addresses 187 * contain zeros in bits 59-48 188 */ 189 if (!((wwn->u.wwn[0] >> 4) == 1 && 190 ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0))) 191 return 1; 192 193 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 194 "1822 Invalid %s: %02x:%02x:%02x:%02x:" 195 "%02x:%02x:%02x:%02x\n", 196 name_type, 197 wwn->u.wwn[0], wwn->u.wwn[1], 198 wwn->u.wwn[2], wwn->u.wwn[3], 199 wwn->u.wwn[4], wwn->u.wwn[5], 200 wwn->u.wwn[6], wwn->u.wwn[7]); 201 return 0; 202 } 203 204 static int 205 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport) 206 { 207 struct lpfc_vport *vport; 208 unsigned long flags; 209 210 spin_lock_irqsave(&phba->port_list_lock, flags); 211 list_for_each_entry(vport, &phba->port_list, listentry) { 212 if (vport == new_vport) 213 continue; 214 /* If they match, return not unique */ 215 if (memcmp(&vport->fc_sparam.portName, 216 &new_vport->fc_sparam.portName, 217 sizeof(struct lpfc_name)) == 0) { 218 spin_unlock_irqrestore(&phba->port_list_lock, flags); 219 return 0; 220 } 221 } 222 spin_unlock_irqrestore(&phba->port_list_lock, flags); 223 return 1; 224 } 225 226 /** 227 * lpfc_discovery_wait - Wait for driver discovery to quiesce 228 * @vport: The virtual port for which this call is being executed. 229 * 230 * This driver calls this routine specifically from lpfc_vport_delete 231 * to enforce a synchronous execution of vport 232 * delete relative to discovery activities. The 233 * lpfc_vport_delete routine should not return until it 234 * can reasonably guarantee that discovery has quiesced. 235 * Post FDISC LOGO, the driver must wait until its SAN teardown is 236 * complete and all resources recovered before allowing 237 * cleanup. 238 * 239 * This routine does not require any locks held. 240 **/ 241 static void lpfc_discovery_wait(struct lpfc_vport *vport) 242 { 243 struct lpfc_hba *phba = vport->phba; 244 uint32_t wait_flags = 0; 245 unsigned long wait_time_max; 246 unsigned long start_time; 247 248 wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE | 249 FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO; 250 251 /* 252 * The time constraint on this loop is a balance between the 253 * fabric RA_TOV value and dev_loss tmo. The driver's 254 * devloss_tmo is 10 giving this loop a 3x multiplier minimally. 255 */ 256 wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000); 257 wait_time_max += jiffies; 258 start_time = jiffies; 259 while (time_before(jiffies, wait_time_max)) { 260 if ((vport->num_disc_nodes > 0) || 261 (vport->fc_flag & wait_flags) || 262 ((vport->port_state > LPFC_VPORT_FAILED) && 263 (vport->port_state < LPFC_VPORT_READY))) { 264 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT, 265 "1833 Vport discovery quiesce Wait:" 266 " state x%x fc_flags x%x" 267 " num_nodes x%x, waiting 1000 msecs" 268 " total wait msecs x%x\n", 269 vport->port_state, vport->fc_flag, 270 vport->num_disc_nodes, 271 jiffies_to_msecs(jiffies - start_time)); 272 msleep(1000); 273 } else { 274 /* Base case. Wait variants satisfied. Break out */ 275 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT, 276 "1834 Vport discovery quiesced:" 277 " state x%x fc_flags x%x" 278 " wait msecs x%x\n", 279 vport->port_state, vport->fc_flag, 280 jiffies_to_msecs(jiffies 281 - start_time)); 282 break; 283 } 284 } 285 286 if (time_after(jiffies, wait_time_max)) 287 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 288 "1835 Vport discovery quiesce failed:" 289 " state x%x fc_flags x%x wait msecs x%x\n", 290 vport->port_state, vport->fc_flag, 291 jiffies_to_msecs(jiffies - start_time)); 292 } 293 294 int 295 lpfc_vport_create(struct fc_vport *fc_vport, bool disable) 296 { 297 struct lpfc_nodelist *ndlp; 298 struct Scsi_Host *shost = fc_vport->shost; 299 struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata; 300 struct lpfc_hba *phba = pport->phba; 301 struct lpfc_vport *vport = NULL; 302 int instance; 303 int vpi; 304 int rc = VPORT_ERROR; 305 int status; 306 307 if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) { 308 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 309 "1808 Create VPORT failed: " 310 "NPIV is not enabled: SLImode:%d\n", 311 phba->sli_rev); 312 rc = VPORT_INVAL; 313 goto error_out; 314 } 315 316 /* NPIV is not supported if HBA has NVME Target enabled */ 317 if (phba->nvmet_support) { 318 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 319 "3189 Create VPORT failed: " 320 "NPIV is not supported on NVME Target\n"); 321 rc = VPORT_INVAL; 322 goto error_out; 323 } 324 325 vpi = lpfc_alloc_vpi(phba); 326 if (vpi == 0) { 327 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 328 "1809 Create VPORT failed: " 329 "Max VPORTs (%d) exceeded\n", 330 phba->max_vpi); 331 rc = VPORT_NORESOURCES; 332 goto error_out; 333 } 334 335 /* Assign an unused board number */ 336 if ((instance = lpfc_get_instance()) < 0) { 337 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 338 "1810 Create VPORT failed: Cannot get " 339 "instance number\n"); 340 lpfc_free_vpi(phba, vpi); 341 rc = VPORT_NORESOURCES; 342 goto error_out; 343 } 344 345 vport = lpfc_create_port(phba, instance, &fc_vport->dev); 346 if (!vport) { 347 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 348 "1811 Create VPORT failed: vpi x%x\n", vpi); 349 lpfc_free_vpi(phba, vpi); 350 rc = VPORT_NORESOURCES; 351 goto error_out; 352 } 353 354 vport->vpi = vpi; 355 lpfc_debugfs_initialize(vport); 356 357 if ((status = lpfc_vport_sparm(phba, vport))) { 358 if (status == -EINTR) { 359 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 360 "1831 Create VPORT Interrupted.\n"); 361 rc = VPORT_ERROR; 362 } else { 363 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 364 "1813 Create VPORT failed. " 365 "Cannot get sparam\n"); 366 rc = VPORT_NORESOURCES; 367 } 368 lpfc_free_vpi(phba, vpi); 369 destroy_port(vport); 370 goto error_out; 371 } 372 373 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); 374 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); 375 376 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8); 377 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8); 378 379 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") || 380 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) { 381 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 382 "1821 Create VPORT failed. " 383 "Invalid WWN format\n"); 384 lpfc_free_vpi(phba, vpi); 385 destroy_port(vport); 386 rc = VPORT_INVAL; 387 goto error_out; 388 } 389 390 if (!lpfc_unique_wwpn(phba, vport)) { 391 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 392 "1823 Create VPORT failed. " 393 "Duplicate WWN on HBA\n"); 394 lpfc_free_vpi(phba, vpi); 395 destroy_port(vport); 396 rc = VPORT_INVAL; 397 goto error_out; 398 } 399 400 /* Create binary sysfs attribute for vport */ 401 lpfc_alloc_sysfs_attr(vport); 402 403 /* Set the DFT_LUN_Q_DEPTH accordingly */ 404 vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth; 405 406 /* Only the physical port can support NVME for now */ 407 vport->cfg_enable_fc4_type = LPFC_ENABLE_FCP; 408 409 *(struct lpfc_vport **)fc_vport->dd_data = vport; 410 vport->fc_vport = fc_vport; 411 412 /* At this point we are fully registered with SCSI Layer. */ 413 vport->load_flag |= FC_ALLOW_FDMI; 414 if (phba->cfg_enable_SmartSAN || 415 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { 416 /* Setup appropriate attribute masks */ 417 vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask; 418 vport->fdmi_port_mask = phba->pport->fdmi_port_mask; 419 } 420 421 /* 422 * In SLI4, the vpi must be activated before it can be used 423 * by the port. 424 */ 425 if ((phba->sli_rev == LPFC_SLI_REV4) && 426 (pport->fc_flag & FC_VFI_REGISTERED)) { 427 rc = lpfc_sli4_init_vpi(vport); 428 if (rc) { 429 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 430 "1838 Failed to INIT_VPI on vpi %d " 431 "status %d\n", vpi, rc); 432 rc = VPORT_NORESOURCES; 433 lpfc_free_vpi(phba, vpi); 434 goto error_out; 435 } 436 } else if (phba->sli_rev == LPFC_SLI_REV4) { 437 /* 438 * Driver cannot INIT_VPI now. Set the flags to 439 * init_vpi when reg_vfi complete. 440 */ 441 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 442 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 443 rc = VPORT_OK; 444 goto out; 445 } 446 447 if ((phba->link_state < LPFC_LINK_UP) || 448 (pport->port_state < LPFC_FABRIC_CFG_LINK) || 449 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { 450 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 451 rc = VPORT_OK; 452 goto out; 453 } 454 455 if (disable) { 456 lpfc_vport_set_state(vport, FC_VPORT_DISABLED); 457 rc = VPORT_OK; 458 goto out; 459 } 460 461 /* Use the Physical nodes Fabric NDLP to determine if the link is 462 * up and ready to FDISC. 463 */ 464 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 465 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 466 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 467 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { 468 lpfc_set_disctmo(vport); 469 lpfc_initial_fdisc(vport); 470 } else { 471 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 472 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 473 "0262 No NPIV Fabric support\n"); 474 } 475 } else { 476 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 477 } 478 rc = VPORT_OK; 479 480 out: 481 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 482 "1825 Vport Created.\n"); 483 lpfc_host_attrib_init(lpfc_shost_from_vport(vport)); 484 error_out: 485 return rc; 486 } 487 488 static int 489 disable_vport(struct fc_vport *fc_vport) 490 { 491 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 492 struct lpfc_hba *phba = vport->phba; 493 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 494 long timeout; 495 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 496 497 ndlp = lpfc_findnode_did(vport, Fabric_DID); 498 if (ndlp && NLP_CHK_NODE_ACT(ndlp) 499 && phba->link_state >= LPFC_LINK_UP) { 500 vport->unreg_vpi_cmpl = VPORT_INVAL; 501 timeout = msecs_to_jiffies(phba->fc_ratov * 2000); 502 if (!lpfc_issue_els_npiv_logo(vport, ndlp)) 503 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) 504 timeout = schedule_timeout(timeout); 505 } 506 507 lpfc_sli_host_down(vport); 508 509 /* Mark all nodes for discovery so we can remove them by 510 * calling lpfc_cleanup_rpis(vport, 1) 511 */ 512 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 513 if (!NLP_CHK_NODE_ACT(ndlp)) 514 continue; 515 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 516 continue; 517 lpfc_disc_state_machine(vport, ndlp, NULL, 518 NLP_EVT_DEVICE_RECOVERY); 519 } 520 lpfc_cleanup_rpis(vport, 1); 521 522 lpfc_stop_vport_timers(vport); 523 lpfc_unreg_all_rpis(vport); 524 lpfc_unreg_default_rpis(vport); 525 /* 526 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the 527 * scsi_host_put() to release the vport. 528 */ 529 lpfc_mbx_unreg_vpi(vport); 530 if (phba->sli_rev == LPFC_SLI_REV4) { 531 spin_lock_irq(shost->host_lock); 532 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 533 spin_unlock_irq(shost->host_lock); 534 } 535 536 lpfc_vport_set_state(vport, FC_VPORT_DISABLED); 537 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 538 "1826 Vport Disabled.\n"); 539 return VPORT_OK; 540 } 541 542 static int 543 enable_vport(struct fc_vport *fc_vport) 544 { 545 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 546 struct lpfc_hba *phba = vport->phba; 547 struct lpfc_nodelist *ndlp = NULL; 548 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 549 550 if ((phba->link_state < LPFC_LINK_UP) || 551 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { 552 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 553 return VPORT_OK; 554 } 555 556 spin_lock_irq(shost->host_lock); 557 vport->load_flag |= FC_LOADING; 558 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 559 spin_unlock_irq(shost->host_lock); 560 lpfc_issue_init_vpi(vport); 561 goto out; 562 } 563 564 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 565 spin_unlock_irq(shost->host_lock); 566 567 /* Use the Physical nodes Fabric NDLP to determine if the link is 568 * up and ready to FDISC. 569 */ 570 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 571 if (ndlp && NLP_CHK_NODE_ACT(ndlp) 572 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 573 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { 574 lpfc_set_disctmo(vport); 575 lpfc_initial_fdisc(vport); 576 } else { 577 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 578 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 579 "0264 No NPIV Fabric support\n"); 580 } 581 } else { 582 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 583 } 584 585 out: 586 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 587 "1827 Vport Enabled.\n"); 588 return VPORT_OK; 589 } 590 591 int 592 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable) 593 { 594 if (disable) 595 return disable_vport(fc_vport); 596 else 597 return enable_vport(fc_vport); 598 } 599 600 601 int 602 lpfc_vport_delete(struct fc_vport *fc_vport) 603 { 604 struct lpfc_nodelist *ndlp = NULL; 605 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 606 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 607 struct lpfc_hba *phba = vport->phba; 608 long timeout; 609 bool ns_ndlp_referenced = false; 610 611 if (vport->port_type == LPFC_PHYSICAL_PORT) { 612 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 613 "1812 vport_delete failed: Cannot delete " 614 "physical host\n"); 615 return VPORT_ERROR; 616 } 617 618 /* If the vport is a static vport fail the deletion. */ 619 if ((vport->vport_flag & STATIC_VPORT) && 620 !(phba->pport->load_flag & FC_UNLOADING)) { 621 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 622 "1837 vport_delete failed: Cannot delete " 623 "static vport.\n"); 624 return VPORT_ERROR; 625 } 626 spin_lock_irq(&phba->hbalock); 627 vport->load_flag |= FC_UNLOADING; 628 spin_unlock_irq(&phba->hbalock); 629 /* 630 * If we are not unloading the driver then prevent the vport_delete 631 * from happening until after this vport's discovery is finished. 632 */ 633 if (!(phba->pport->load_flag & FC_UNLOADING)) { 634 int check_count = 0; 635 while (check_count < ((phba->fc_ratov * 3) + 3) && 636 vport->port_state > LPFC_VPORT_FAILED && 637 vport->port_state < LPFC_VPORT_READY) { 638 check_count++; 639 msleep(1000); 640 } 641 if (vport->port_state > LPFC_VPORT_FAILED && 642 vport->port_state < LPFC_VPORT_READY) 643 return -EAGAIN; 644 } 645 /* 646 * This is a bit of a mess. We want to ensure the shost doesn't get 647 * torn down until we're done with the embedded lpfc_vport structure. 648 * 649 * Beyond holding a reference for this function, we also need a 650 * reference for outstanding I/O requests we schedule during delete 651 * processing. But once we scsi_remove_host() we can no longer obtain 652 * a reference through scsi_host_get(). 653 * 654 * So we take two references here. We release one reference at the 655 * bottom of the function -- after delinking the vport. And we 656 * release the other at the completion of the unreg_vpi that get's 657 * initiated after we've disposed of all other resources associated 658 * with the port. 659 */ 660 if (!scsi_host_get(shost)) 661 return VPORT_INVAL; 662 if (!scsi_host_get(shost)) { 663 scsi_host_put(shost); 664 return VPORT_INVAL; 665 } 666 lpfc_free_sysfs_attr(vport); 667 668 lpfc_debugfs_terminate(vport); 669 670 /* 671 * The call to fc_remove_host might release the NameServer ndlp. Since 672 * we might need to use the ndlp to send the DA_ID CT command, 673 * increment the reference for the NameServer ndlp to prevent it from 674 * being released. 675 */ 676 ndlp = lpfc_findnode_did(vport, NameServer_DID); 677 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { 678 lpfc_nlp_get(ndlp); 679 ns_ndlp_referenced = true; 680 } 681 682 /* Remove FC host and then SCSI host with the vport */ 683 fc_remove_host(shost); 684 scsi_remove_host(shost); 685 686 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 687 688 /* In case of driver unload, we shall not perform fabric logo as the 689 * worker thread already stopped at this stage and, in this case, we 690 * can safely skip the fabric logo. 691 */ 692 if (phba->pport->load_flag & FC_UNLOADING) { 693 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 694 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && 695 phba->link_state >= LPFC_LINK_UP) { 696 /* First look for the Fabric ndlp */ 697 ndlp = lpfc_findnode_did(vport, Fabric_DID); 698 if (!ndlp) 699 goto skip_logo; 700 else if (!NLP_CHK_NODE_ACT(ndlp)) { 701 ndlp = lpfc_enable_node(vport, ndlp, 702 NLP_STE_UNUSED_NODE); 703 if (!ndlp) 704 goto skip_logo; 705 } 706 /* Remove ndlp from vport npld list */ 707 lpfc_dequeue_node(vport, ndlp); 708 709 /* Indicate free memory when release */ 710 spin_lock_irq(&phba->ndlp_lock); 711 NLP_SET_FREE_REQ(ndlp); 712 spin_unlock_irq(&phba->ndlp_lock); 713 /* Kick off release ndlp when it can be safely done */ 714 lpfc_nlp_put(ndlp); 715 } 716 goto skip_logo; 717 } 718 719 /* Otherwise, we will perform fabric logo as needed */ 720 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 721 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && 722 phba->link_state >= LPFC_LINK_UP && 723 phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 724 if (vport->cfg_enable_da_id) { 725 timeout = msecs_to_jiffies(phba->fc_ratov * 2000); 726 if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0)) 727 while (vport->ct_flags && timeout) 728 timeout = schedule_timeout(timeout); 729 else 730 lpfc_printf_log(vport->phba, KERN_WARNING, 731 LOG_VPORT, 732 "1829 CT command failed to " 733 "delete objects on fabric\n"); 734 } 735 /* First look for the Fabric ndlp */ 736 ndlp = lpfc_findnode_did(vport, Fabric_DID); 737 if (!ndlp) { 738 /* Cannot find existing Fabric ndlp, allocate one */ 739 ndlp = lpfc_nlp_init(vport, Fabric_DID); 740 if (!ndlp) 741 goto skip_logo; 742 /* Indicate free memory when release */ 743 NLP_SET_FREE_REQ(ndlp); 744 } else { 745 if (!NLP_CHK_NODE_ACT(ndlp)) { 746 ndlp = lpfc_enable_node(vport, ndlp, 747 NLP_STE_UNUSED_NODE); 748 if (!ndlp) 749 goto skip_logo; 750 } 751 752 /* Remove ndlp from vport list */ 753 lpfc_dequeue_node(vport, ndlp); 754 spin_lock_irq(&phba->ndlp_lock); 755 if (!NLP_CHK_FREE_REQ(ndlp)) 756 /* Indicate free memory when release */ 757 NLP_SET_FREE_REQ(ndlp); 758 else { 759 /* Skip this if ndlp is already in free mode */ 760 spin_unlock_irq(&phba->ndlp_lock); 761 goto skip_logo; 762 } 763 spin_unlock_irq(&phba->ndlp_lock); 764 } 765 766 /* 767 * If the vpi is not registered, then a valid FDISC doesn't 768 * exist and there is no need for a ELS LOGO. Just cleanup 769 * the ndlp. 770 */ 771 if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) { 772 lpfc_nlp_put(ndlp); 773 goto skip_logo; 774 } 775 776 vport->unreg_vpi_cmpl = VPORT_INVAL; 777 timeout = msecs_to_jiffies(phba->fc_ratov * 2000); 778 if (!lpfc_issue_els_npiv_logo(vport, ndlp)) 779 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) 780 timeout = schedule_timeout(timeout); 781 } 782 783 if (!(phba->pport->load_flag & FC_UNLOADING)) 784 lpfc_discovery_wait(vport); 785 786 skip_logo: 787 788 /* 789 * If the NameServer ndlp has been incremented to allow the DA_ID CT 790 * command to be sent, decrement the ndlp now. 791 */ 792 if (ns_ndlp_referenced) { 793 ndlp = lpfc_findnode_did(vport, NameServer_DID); 794 lpfc_nlp_put(ndlp); 795 } 796 797 lpfc_cleanup(vport); 798 lpfc_sli_host_down(vport); 799 800 lpfc_stop_vport_timers(vport); 801 802 if (!(phba->pport->load_flag & FC_UNLOADING)) { 803 lpfc_unreg_all_rpis(vport); 804 lpfc_unreg_default_rpis(vport); 805 /* 806 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) 807 * does the scsi_host_put() to release the vport. 808 */ 809 if (!(vport->vpi_state & LPFC_VPI_REGISTERED) || 810 lpfc_mbx_unreg_vpi(vport)) 811 scsi_host_put(shost); 812 } else 813 scsi_host_put(shost); 814 815 lpfc_free_vpi(phba, vport->vpi); 816 vport->work_port_events = 0; 817 spin_lock_irq(&phba->port_list_lock); 818 list_del_init(&vport->listentry); 819 spin_unlock_irq(&phba->port_list_lock); 820 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 821 "1828 Vport Deleted.\n"); 822 scsi_host_put(shost); 823 return VPORT_OK; 824 } 825 826 struct lpfc_vport ** 827 lpfc_create_vport_work_array(struct lpfc_hba *phba) 828 { 829 struct lpfc_vport *port_iterator; 830 struct lpfc_vport **vports; 831 int index = 0; 832 vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *), 833 GFP_KERNEL); 834 if (vports == NULL) 835 return NULL; 836 spin_lock_irq(&phba->port_list_lock); 837 list_for_each_entry(port_iterator, &phba->port_list, listentry) { 838 if (port_iterator->load_flag & FC_UNLOADING) 839 continue; 840 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) { 841 lpfc_printf_vlog(port_iterator, KERN_ERR, LOG_VPORT, 842 "1801 Create vport work array FAILED: " 843 "cannot do scsi_host_get\n"); 844 continue; 845 } 846 vports[index++] = port_iterator; 847 } 848 spin_unlock_irq(&phba->port_list_lock); 849 return vports; 850 } 851 852 void 853 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports) 854 { 855 int i; 856 if (vports == NULL) 857 return; 858 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 859 scsi_host_put(lpfc_shost_from_vport(vports[i])); 860 kfree(vports); 861 } 862 863 864 /** 865 * lpfc_vport_reset_stat_data - Reset the statistical data for the vport 866 * @vport: Pointer to vport object. 867 * 868 * This function resets the statistical data for the vport. This function 869 * is called with the host_lock held 870 **/ 871 void 872 lpfc_vport_reset_stat_data(struct lpfc_vport *vport) 873 { 874 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 875 876 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 877 if (!NLP_CHK_NODE_ACT(ndlp)) 878 continue; 879 if (ndlp->lat_data) 880 memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT * 881 sizeof(struct lpfc_scsicmd_bkt)); 882 } 883 } 884 885 886 /** 887 * lpfc_alloc_bucket - Allocate data buffer required for statistical data 888 * @vport: Pointer to vport object. 889 * 890 * This function allocates data buffer required for all the FC 891 * nodes of the vport to collect statistical data. 892 **/ 893 void 894 lpfc_alloc_bucket(struct lpfc_vport *vport) 895 { 896 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 897 898 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 899 if (!NLP_CHK_NODE_ACT(ndlp)) 900 continue; 901 902 kfree(ndlp->lat_data); 903 ndlp->lat_data = NULL; 904 905 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 906 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 907 sizeof(struct lpfc_scsicmd_bkt), 908 GFP_ATOMIC); 909 910 if (!ndlp->lat_data) 911 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 912 "0287 lpfc_alloc_bucket failed to " 913 "allocate statistical data buffer DID " 914 "0x%x\n", ndlp->nlp_DID); 915 } 916 } 917 } 918 919 /** 920 * lpfc_free_bucket - Free data buffer required for statistical data 921 * @vport: Pointer to vport object. 922 * 923 * Th function frees statistical data buffer of all the FC 924 * nodes of the vport. 925 **/ 926 void 927 lpfc_free_bucket(struct lpfc_vport *vport) 928 { 929 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 930 931 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 932 if (!NLP_CHK_NODE_ACT(ndlp)) 933 continue; 934 935 kfree(ndlp->lat_data); 936 ndlp->lat_data = NULL; 937 } 938 } 939