1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Limited 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->context1; 142 pmb->context1 = 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->hbalock, 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->hbalock, flags); 219 return 0; 220 } 221 } 222 spin_unlock_irqrestore(&phba->hbalock, 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 vpi = lpfc_alloc_vpi(phba); 317 if (vpi == 0) { 318 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 319 "1809 Create VPORT failed: " 320 "Max VPORTs (%d) exceeded\n", 321 phba->max_vpi); 322 rc = VPORT_NORESOURCES; 323 goto error_out; 324 } 325 326 /* Assign an unused board number */ 327 if ((instance = lpfc_get_instance()) < 0) { 328 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 329 "1810 Create VPORT failed: Cannot get " 330 "instance number\n"); 331 lpfc_free_vpi(phba, vpi); 332 rc = VPORT_NORESOURCES; 333 goto error_out; 334 } 335 336 vport = lpfc_create_port(phba, instance, &fc_vport->dev); 337 if (!vport) { 338 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 339 "1811 Create VPORT failed: vpi x%x\n", vpi); 340 lpfc_free_vpi(phba, vpi); 341 rc = VPORT_NORESOURCES; 342 goto error_out; 343 } 344 345 vport->vpi = vpi; 346 lpfc_debugfs_initialize(vport); 347 348 if ((status = lpfc_vport_sparm(phba, vport))) { 349 if (status == -EINTR) { 350 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 351 "1831 Create VPORT Interrupted.\n"); 352 rc = VPORT_ERROR; 353 } else { 354 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 355 "1813 Create VPORT failed. " 356 "Cannot get sparam\n"); 357 rc = VPORT_NORESOURCES; 358 } 359 lpfc_free_vpi(phba, vpi); 360 destroy_port(vport); 361 goto error_out; 362 } 363 364 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); 365 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); 366 367 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8); 368 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8); 369 370 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") || 371 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) { 372 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 373 "1821 Create VPORT failed. " 374 "Invalid WWN format\n"); 375 lpfc_free_vpi(phba, vpi); 376 destroy_port(vport); 377 rc = VPORT_INVAL; 378 goto error_out; 379 } 380 381 if (!lpfc_unique_wwpn(phba, vport)) { 382 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 383 "1823 Create VPORT failed. " 384 "Duplicate WWN on HBA\n"); 385 lpfc_free_vpi(phba, vpi); 386 destroy_port(vport); 387 rc = VPORT_INVAL; 388 goto error_out; 389 } 390 391 /* Create binary sysfs attribute for vport */ 392 lpfc_alloc_sysfs_attr(vport); 393 394 /* Set the DFT_LUN_Q_DEPTH accordingly */ 395 vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth; 396 397 *(struct lpfc_vport **)fc_vport->dd_data = vport; 398 vport->fc_vport = fc_vport; 399 400 /* At this point we are fully registered with SCSI Layer. */ 401 vport->load_flag |= FC_ALLOW_FDMI; 402 if (phba->cfg_enable_SmartSAN || 403 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { 404 /* Setup appropriate attribute masks */ 405 vport->fdmi_hba_mask = phba->pport->fdmi_hba_mask; 406 vport->fdmi_port_mask = phba->pport->fdmi_port_mask; 407 } 408 409 if ((phba->nvmet_support == 0) && 410 ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 411 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME))) { 412 /* Create NVME binding with nvme_fc_transport. This 413 * ensures the vport is initialized. 414 */ 415 rc = lpfc_nvme_create_localport(vport); 416 if (rc) { 417 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 418 "6003 %s status x%x\n", 419 "NVME registration failed, ", 420 rc); 421 goto error_out; 422 } 423 } 424 425 /* 426 * In SLI4, the vpi must be activated before it can be used 427 * by the port. 428 */ 429 if ((phba->sli_rev == LPFC_SLI_REV4) && 430 (pport->fc_flag & FC_VFI_REGISTERED)) { 431 rc = lpfc_sli4_init_vpi(vport); 432 if (rc) { 433 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, 434 "1838 Failed to INIT_VPI on vpi %d " 435 "status %d\n", vpi, rc); 436 rc = VPORT_NORESOURCES; 437 lpfc_free_vpi(phba, vpi); 438 goto error_out; 439 } 440 } else if (phba->sli_rev == LPFC_SLI_REV4) { 441 /* 442 * Driver cannot INIT_VPI now. Set the flags to 443 * init_vpi when reg_vfi complete. 444 */ 445 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 446 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 447 rc = VPORT_OK; 448 goto out; 449 } 450 451 if ((phba->link_state < LPFC_LINK_UP) || 452 (pport->port_state < LPFC_FABRIC_CFG_LINK) || 453 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { 454 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 455 rc = VPORT_OK; 456 goto out; 457 } 458 459 if (disable) { 460 lpfc_vport_set_state(vport, FC_VPORT_DISABLED); 461 rc = VPORT_OK; 462 goto out; 463 } 464 465 /* Use the Physical nodes Fabric NDLP to determine if the link is 466 * up and ready to FDISC. 467 */ 468 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 469 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 470 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 471 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { 472 lpfc_set_disctmo(vport); 473 lpfc_initial_fdisc(vport); 474 } else { 475 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 476 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 477 "0262 No NPIV Fabric support\n"); 478 } 479 } else { 480 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 481 } 482 rc = VPORT_OK; 483 484 out: 485 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 486 "1825 Vport Created.\n"); 487 lpfc_host_attrib_init(lpfc_shost_from_vport(vport)); 488 error_out: 489 return rc; 490 } 491 492 static int 493 disable_vport(struct fc_vport *fc_vport) 494 { 495 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 496 struct lpfc_hba *phba = vport->phba; 497 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 498 long timeout; 499 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 500 501 ndlp = lpfc_findnode_did(vport, Fabric_DID); 502 if (ndlp && NLP_CHK_NODE_ACT(ndlp) 503 && phba->link_state >= LPFC_LINK_UP) { 504 vport->unreg_vpi_cmpl = VPORT_INVAL; 505 timeout = msecs_to_jiffies(phba->fc_ratov * 2000); 506 if (!lpfc_issue_els_npiv_logo(vport, ndlp)) 507 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) 508 timeout = schedule_timeout(timeout); 509 } 510 511 lpfc_sli_host_down(vport); 512 513 /* Mark all nodes for discovery so we can remove them by 514 * calling lpfc_cleanup_rpis(vport, 1) 515 */ 516 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 517 if (!NLP_CHK_NODE_ACT(ndlp)) 518 continue; 519 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 520 continue; 521 lpfc_disc_state_machine(vport, ndlp, NULL, 522 NLP_EVT_DEVICE_RECOVERY); 523 } 524 lpfc_cleanup_rpis(vport, 1); 525 526 lpfc_stop_vport_timers(vport); 527 lpfc_unreg_all_rpis(vport); 528 lpfc_unreg_default_rpis(vport); 529 /* 530 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the 531 * scsi_host_put() to release the vport. 532 */ 533 lpfc_mbx_unreg_vpi(vport); 534 spin_lock_irq(shost->host_lock); 535 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 536 spin_unlock_irq(shost->host_lock); 537 538 lpfc_vport_set_state(vport, FC_VPORT_DISABLED); 539 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 540 "1826 Vport Disabled.\n"); 541 return VPORT_OK; 542 } 543 544 static int 545 enable_vport(struct fc_vport *fc_vport) 546 { 547 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 548 struct lpfc_hba *phba = vport->phba; 549 struct lpfc_nodelist *ndlp = NULL; 550 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 551 552 if ((phba->link_state < LPFC_LINK_UP) || 553 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { 554 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 555 return VPORT_OK; 556 } 557 558 spin_lock_irq(shost->host_lock); 559 vport->load_flag |= FC_LOADING; 560 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 561 spin_unlock_irq(shost->host_lock); 562 lpfc_issue_init_vpi(vport); 563 goto out; 564 } 565 566 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 567 spin_unlock_irq(shost->host_lock); 568 569 /* Use the Physical nodes Fabric NDLP to determine if the link is 570 * up and ready to FDISC. 571 */ 572 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 573 if (ndlp && NLP_CHK_NODE_ACT(ndlp) 574 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 575 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { 576 lpfc_set_disctmo(vport); 577 lpfc_initial_fdisc(vport); 578 } else { 579 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 580 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 581 "0264 No NPIV Fabric support\n"); 582 } 583 } else { 584 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 585 } 586 587 out: 588 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 589 "1827 Vport Enabled.\n"); 590 return VPORT_OK; 591 } 592 593 int 594 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable) 595 { 596 if (disable) 597 return disable_vport(fc_vport); 598 else 599 return enable_vport(fc_vport); 600 } 601 602 603 int 604 lpfc_vport_delete(struct fc_vport *fc_vport) 605 { 606 struct lpfc_nodelist *ndlp = NULL; 607 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 608 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 609 struct lpfc_hba *phba = vport->phba; 610 long timeout; 611 bool ns_ndlp_referenced = false; 612 613 if (vport->port_type == LPFC_PHYSICAL_PORT) { 614 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 615 "1812 vport_delete failed: Cannot delete " 616 "physical host\n"); 617 return VPORT_ERROR; 618 } 619 620 /* If the vport is a static vport fail the deletion. */ 621 if ((vport->vport_flag & STATIC_VPORT) && 622 !(phba->pport->load_flag & FC_UNLOADING)) { 623 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 624 "1837 vport_delete failed: Cannot delete " 625 "static vport.\n"); 626 return VPORT_ERROR; 627 } 628 spin_lock_irq(&phba->hbalock); 629 vport->load_flag |= FC_UNLOADING; 630 spin_unlock_irq(&phba->hbalock); 631 /* 632 * If we are not unloading the driver then prevent the vport_delete 633 * from happening until after this vport's discovery is finished. 634 */ 635 if (!(phba->pport->load_flag & FC_UNLOADING)) { 636 int check_count = 0; 637 while (check_count < ((phba->fc_ratov * 3) + 3) && 638 vport->port_state > LPFC_VPORT_FAILED && 639 vport->port_state < LPFC_VPORT_READY) { 640 check_count++; 641 msleep(1000); 642 } 643 if (vport->port_state > LPFC_VPORT_FAILED && 644 vport->port_state < LPFC_VPORT_READY) 645 return -EAGAIN; 646 } 647 /* 648 * This is a bit of a mess. We want to ensure the shost doesn't get 649 * torn down until we're done with the embedded lpfc_vport structure. 650 * 651 * Beyond holding a reference for this function, we also need a 652 * reference for outstanding I/O requests we schedule during delete 653 * processing. But once we scsi_remove_host() we can no longer obtain 654 * a reference through scsi_host_get(). 655 * 656 * So we take two references here. We release one reference at the 657 * bottom of the function -- after delinking the vport. And we 658 * release the other at the completion of the unreg_vpi that get's 659 * initiated after we've disposed of all other resources associated 660 * with the port. 661 */ 662 if (!scsi_host_get(shost)) 663 return VPORT_INVAL; 664 if (!scsi_host_get(shost)) { 665 scsi_host_put(shost); 666 return VPORT_INVAL; 667 } 668 lpfc_free_sysfs_attr(vport); 669 670 lpfc_debugfs_terminate(vport); 671 672 /* 673 * The call to fc_remove_host might release the NameServer ndlp. Since 674 * we might need to use the ndlp to send the DA_ID CT command, 675 * increment the reference for the NameServer ndlp to prevent it from 676 * being released. 677 */ 678 ndlp = lpfc_findnode_did(vport, NameServer_DID); 679 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { 680 lpfc_nlp_get(ndlp); 681 ns_ndlp_referenced = true; 682 } 683 684 /* Remove FC host and then SCSI host with the vport */ 685 fc_remove_host(shost); 686 scsi_remove_host(shost); 687 688 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 689 690 /* In case of driver unload, we shall not perform fabric logo as the 691 * worker thread already stopped at this stage and, in this case, we 692 * can safely skip the fabric logo. 693 */ 694 if (phba->pport->load_flag & FC_UNLOADING) { 695 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 696 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && 697 phba->link_state >= LPFC_LINK_UP) { 698 /* First look for the Fabric ndlp */ 699 ndlp = lpfc_findnode_did(vport, Fabric_DID); 700 if (!ndlp) 701 goto skip_logo; 702 else if (!NLP_CHK_NODE_ACT(ndlp)) { 703 ndlp = lpfc_enable_node(vport, ndlp, 704 NLP_STE_UNUSED_NODE); 705 if (!ndlp) 706 goto skip_logo; 707 } 708 /* Remove ndlp from vport npld list */ 709 lpfc_dequeue_node(vport, ndlp); 710 711 /* Indicate free memory when release */ 712 spin_lock_irq(&phba->ndlp_lock); 713 NLP_SET_FREE_REQ(ndlp); 714 spin_unlock_irq(&phba->ndlp_lock); 715 /* Kick off release ndlp when it can be safely done */ 716 lpfc_nlp_put(ndlp); 717 } 718 goto skip_logo; 719 } 720 721 /* Otherwise, we will perform fabric logo as needed */ 722 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 723 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && 724 phba->link_state >= LPFC_LINK_UP && 725 phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 726 if (vport->cfg_enable_da_id) { 727 timeout = msecs_to_jiffies(phba->fc_ratov * 2000); 728 if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0)) 729 while (vport->ct_flags && timeout) 730 timeout = schedule_timeout(timeout); 731 else 732 lpfc_printf_log(vport->phba, KERN_WARNING, 733 LOG_VPORT, 734 "1829 CT command failed to " 735 "delete objects on fabric\n"); 736 } 737 /* First look for the Fabric ndlp */ 738 ndlp = lpfc_findnode_did(vport, Fabric_DID); 739 if (!ndlp) { 740 /* Cannot find existing Fabric ndlp, allocate one */ 741 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); 742 if (!ndlp) 743 goto skip_logo; 744 lpfc_nlp_init(vport, ndlp, Fabric_DID); 745 /* Indicate free memory when release */ 746 NLP_SET_FREE_REQ(ndlp); 747 } else { 748 if (!NLP_CHK_NODE_ACT(ndlp)) { 749 ndlp = lpfc_enable_node(vport, ndlp, 750 NLP_STE_UNUSED_NODE); 751 if (!ndlp) 752 goto skip_logo; 753 } 754 755 /* Remove ndlp from vport list */ 756 lpfc_dequeue_node(vport, ndlp); 757 spin_lock_irq(&phba->ndlp_lock); 758 if (!NLP_CHK_FREE_REQ(ndlp)) 759 /* Indicate free memory when release */ 760 NLP_SET_FREE_REQ(ndlp); 761 else { 762 /* Skip this if ndlp is already in free mode */ 763 spin_unlock_irq(&phba->ndlp_lock); 764 goto skip_logo; 765 } 766 spin_unlock_irq(&phba->ndlp_lock); 767 } 768 769 /* 770 * If the vpi is not registered, then a valid FDISC doesn't 771 * exist and there is no need for a ELS LOGO. Just cleanup 772 * the ndlp. 773 */ 774 if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) { 775 lpfc_nlp_put(ndlp); 776 goto skip_logo; 777 } 778 779 vport->unreg_vpi_cmpl = VPORT_INVAL; 780 timeout = msecs_to_jiffies(phba->fc_ratov * 2000); 781 if (!lpfc_issue_els_npiv_logo(vport, ndlp)) 782 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) 783 timeout = schedule_timeout(timeout); 784 } 785 786 if (!(phba->pport->load_flag & FC_UNLOADING)) 787 lpfc_discovery_wait(vport); 788 789 skip_logo: 790 791 /* 792 * If the NameServer ndlp has been incremented to allow the DA_ID CT 793 * command to be sent, decrement the ndlp now. 794 */ 795 if (ns_ndlp_referenced) { 796 ndlp = lpfc_findnode_did(vport, NameServer_DID); 797 lpfc_nlp_put(ndlp); 798 } 799 800 lpfc_cleanup(vport); 801 lpfc_sli_host_down(vport); 802 803 lpfc_stop_vport_timers(vport); 804 805 if (!(phba->pport->load_flag & FC_UNLOADING)) { 806 lpfc_unreg_all_rpis(vport); 807 lpfc_unreg_default_rpis(vport); 808 /* 809 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) 810 * does the scsi_host_put() to release the vport. 811 */ 812 if (!(vport->vpi_state & LPFC_VPI_REGISTERED) || 813 lpfc_mbx_unreg_vpi(vport)) 814 scsi_host_put(shost); 815 } else 816 scsi_host_put(shost); 817 818 lpfc_free_vpi(phba, vport->vpi); 819 vport->work_port_events = 0; 820 spin_lock_irq(&phba->hbalock); 821 list_del_init(&vport->listentry); 822 spin_unlock_irq(&phba->hbalock); 823 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, 824 "1828 Vport Deleted.\n"); 825 scsi_host_put(shost); 826 return VPORT_OK; 827 } 828 829 struct lpfc_vport ** 830 lpfc_create_vport_work_array(struct lpfc_hba *phba) 831 { 832 struct lpfc_vport *port_iterator; 833 struct lpfc_vport **vports; 834 int index = 0; 835 vports = kzalloc((phba->max_vports + 1) * sizeof(struct lpfc_vport *), 836 GFP_KERNEL); 837 if (vports == NULL) 838 return NULL; 839 spin_lock_irq(&phba->hbalock); 840 list_for_each_entry(port_iterator, &phba->port_list, listentry) { 841 if (port_iterator->load_flag & FC_UNLOADING) 842 continue; 843 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) { 844 lpfc_printf_vlog(port_iterator, KERN_ERR, LOG_VPORT, 845 "1801 Create vport work array FAILED: " 846 "cannot do scsi_host_get\n"); 847 continue; 848 } 849 vports[index++] = port_iterator; 850 } 851 spin_unlock_irq(&phba->hbalock); 852 return vports; 853 } 854 855 void 856 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports) 857 { 858 int i; 859 if (vports == NULL) 860 return; 861 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 862 scsi_host_put(lpfc_shost_from_vport(vports[i])); 863 kfree(vports); 864 } 865 866 867 /** 868 * lpfc_vport_reset_stat_data - Reset the statistical data for the vport 869 * @vport: Pointer to vport object. 870 * 871 * This function resets the statistical data for the vport. This function 872 * is called with the host_lock held 873 **/ 874 void 875 lpfc_vport_reset_stat_data(struct lpfc_vport *vport) 876 { 877 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 878 879 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 880 if (!NLP_CHK_NODE_ACT(ndlp)) 881 continue; 882 if (ndlp->lat_data) 883 memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT * 884 sizeof(struct lpfc_scsicmd_bkt)); 885 } 886 } 887 888 889 /** 890 * lpfc_alloc_bucket - Allocate data buffer required for statistical data 891 * @vport: Pointer to vport object. 892 * 893 * This function allocates data buffer required for all the FC 894 * nodes of the vport to collect statistical data. 895 **/ 896 void 897 lpfc_alloc_bucket(struct lpfc_vport *vport) 898 { 899 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 900 901 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 902 if (!NLP_CHK_NODE_ACT(ndlp)) 903 continue; 904 905 kfree(ndlp->lat_data); 906 ndlp->lat_data = NULL; 907 908 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 909 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 910 sizeof(struct lpfc_scsicmd_bkt), 911 GFP_ATOMIC); 912 913 if (!ndlp->lat_data) 914 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 915 "0287 lpfc_alloc_bucket failed to " 916 "allocate statistical data buffer DID " 917 "0x%x\n", ndlp->nlp_DID); 918 } 919 } 920 } 921 922 /** 923 * lpfc_free_bucket - Free data buffer required for statistical data 924 * @vport: Pointer to vport object. 925 * 926 * Th function frees statistical data buffer of all the FC 927 * nodes of the vport. 928 **/ 929 void 930 lpfc_free_bucket(struct lpfc_vport *vport) 931 { 932 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; 933 934 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 935 if (!NLP_CHK_NODE_ACT(ndlp)) 936 continue; 937 938 kfree(ndlp->lat_data); 939 ndlp->lat_data = NULL; 940 } 941 } 942