1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2023 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/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%x refcnt %d state %d xpt x%x\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref), 175 ndlp->nlp_state, ndlp->fc4_xpt_flags); 176 177 /* Don't schedule a worker thread event if the vport is going down. 178 * The teardown process cleans up the node via lpfc_drop_node. 179 */ 180 if (vport->load_flag & FC_UNLOADING) { 181 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 182 ndlp->rport = NULL; 183 184 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 185 /* clear the NLP_XPT_REGD if the node is not registered 186 * with nvme-fc 187 */ 188 if (ndlp->fc4_xpt_flags == NLP_XPT_REGD) 189 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 190 191 /* Remove the node reference from remote_port_add now. 192 * The driver will not call remote_port_delete. 193 */ 194 lpfc_nlp_put(ndlp); 195 return; 196 } 197 198 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 199 return; 200 201 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 202 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 203 "6789 rport name %llx != node port name %llx", 204 rport->port_name, 205 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 206 207 evtp = &ndlp->dev_loss_evt; 208 209 if (!list_empty(&evtp->evt_listp)) { 210 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 211 "6790 rport name %llx dev_loss_evt pending\n", 212 rport->port_name); 213 return; 214 } 215 216 spin_lock_irqsave(&ndlp->lock, iflags); 217 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 218 219 /* If there is a PLOGI in progress, and we are in a 220 * NLP_NPR_2B_DISC state, don't turn off the flag. 221 */ 222 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 223 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 224 225 /* 226 * The backend does not expect any more calls associated with this 227 * rport. Remove the association between rport and ndlp. 228 */ 229 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 230 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 231 ndlp->rport = NULL; 232 spin_unlock_irqrestore(&ndlp->lock, iflags); 233 234 if (phba->worker_thread) { 235 /* We need to hold the node by incrementing the reference 236 * count until this queued work is done 237 */ 238 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 239 240 spin_lock_irqsave(&phba->hbalock, iflags); 241 if (evtp->evt_arg1) { 242 evtp->evt = LPFC_EVT_DEV_LOSS; 243 list_add_tail(&evtp->evt_listp, &phba->work_list); 244 lpfc_worker_wake_up(phba); 245 } 246 spin_unlock_irqrestore(&phba->hbalock, iflags); 247 } else { 248 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 249 "3188 worker thread is stopped %s x%06x, " 250 " rport x%px flg x%x load_flag x%x refcnt " 251 "%d\n", __func__, ndlp->nlp_DID, 252 ndlp->rport, ndlp->nlp_flag, 253 vport->load_flag, kref_read(&ndlp->kref)); 254 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 255 spin_lock_irqsave(&ndlp->lock, iflags); 256 /* Node is in dev loss. No further transaction. */ 257 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 258 spin_unlock_irqrestore(&ndlp->lock, iflags); 259 lpfc_disc_state_machine(vport, ndlp, NULL, 260 NLP_EVT_DEVICE_RM); 261 } 262 263 } 264 265 return; 266 } 267 268 /** 269 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 270 * @vport: Pointer to vport context object. 271 * 272 * This function checks for idle VMID entries related to a particular vport. If 273 * found unused/idle, free them accordingly. 274 **/ 275 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 276 { 277 u16 keep; 278 u32 difftime = 0, r, bucket; 279 u64 *lta; 280 int cpu; 281 struct lpfc_vmid *vmp; 282 283 write_lock(&vport->vmid_lock); 284 285 if (!vport->cur_vmid_cnt) 286 goto out; 287 288 /* iterate through the table */ 289 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 290 keep = 0; 291 if (vmp->flag & LPFC_VMID_REGISTERED) { 292 /* check if the particular VMID is in use */ 293 /* for all available per cpu variable */ 294 for_each_possible_cpu(cpu) { 295 /* if last access time is less than timeout */ 296 lta = per_cpu_ptr(vmp->last_io_time, cpu); 297 if (!lta) 298 continue; 299 difftime = (jiffies) - (*lta); 300 if ((vport->vmid_inactivity_timeout * 301 JIFFIES_PER_HR) > difftime) { 302 keep = 1; 303 break; 304 } 305 } 306 307 /* if none of the cpus have been used by the vm, */ 308 /* remove the entry if already registered */ 309 if (!keep) { 310 /* mark the entry for deregistration */ 311 vmp->flag = LPFC_VMID_DE_REGISTER; 312 write_unlock(&vport->vmid_lock); 313 if (vport->vmid_priority_tagging) 314 r = lpfc_vmid_uvem(vport, vmp, false); 315 else 316 r = lpfc_vmid_cmd(vport, 317 SLI_CTAS_DAPP_IDENT, 318 vmp); 319 320 /* decrement number of active vms and mark */ 321 /* entry in slot as free */ 322 write_lock(&vport->vmid_lock); 323 if (!r) { 324 struct lpfc_vmid *ht = vmp; 325 326 vport->cur_vmid_cnt--; 327 ht->flag = LPFC_VMID_SLOT_FREE; 328 free_percpu(ht->last_io_time); 329 ht->last_io_time = NULL; 330 hash_del(&ht->hnode); 331 } 332 } 333 } 334 } 335 out: 336 write_unlock(&vport->vmid_lock); 337 } 338 339 /** 340 * lpfc_check_inactive_vmid - VMID inactivity checker 341 * @phba: Pointer to hba context object. 342 * 343 * This function is called from the worker thread to determine if an entry in 344 * the VMID table can be released since there was no I/O activity seen from that 345 * particular VM for the specified time. When this happens, the entry in the 346 * table is released and also the resources on the switch cleared. 347 **/ 348 349 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 350 { 351 struct lpfc_vport *vport; 352 struct lpfc_vport **vports; 353 int i; 354 355 vports = lpfc_create_vport_work_array(phba); 356 if (!vports) 357 return; 358 359 for (i = 0; i <= phba->max_vports; i++) { 360 if ((!vports[i]) && (i == 0)) 361 vport = phba->pport; 362 else 363 vport = vports[i]; 364 if (!vport) 365 break; 366 367 lpfc_check_inactive_vmid_one(vport); 368 } 369 lpfc_destroy_vport_work_array(phba, vports); 370 } 371 372 /** 373 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 374 * @vport: Pointer to vport object. 375 * @ndlp: Pointer to remote node object. 376 * 377 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 378 * node during dev_loss_tmo processing, then this function restores the nlp_put 379 * kref decrement from lpfc_dev_loss_tmo_handler. 380 **/ 381 void 382 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 383 struct lpfc_nodelist *ndlp) 384 { 385 unsigned long iflags; 386 387 spin_lock_irqsave(&ndlp->lock, iflags); 388 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 389 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 390 spin_unlock_irqrestore(&ndlp->lock, iflags); 391 lpfc_nlp_get(ndlp); 392 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 393 "8438 Devloss timeout reversed on DID x%x " 394 "refcnt %d ndlp %p flag x%x " 395 "port_state = x%x\n", 396 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 397 ndlp->nlp_flag, vport->port_state); 398 spin_lock_irqsave(&ndlp->lock, iflags); 399 } 400 spin_unlock_irqrestore(&ndlp->lock, iflags); 401 } 402 403 /** 404 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 405 * @ndlp: Pointer to remote node object. 406 * 407 * This function is called from the worker thread when devloss timeout timer 408 * expires. For SLI4 host, this routine shall return 1 when at lease one 409 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 410 * routine shall return 0 when there is no remote node is still in use of FCF 411 * when devloss timeout happened to this @ndlp. 412 **/ 413 static int 414 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 415 { 416 struct lpfc_vport *vport; 417 struct lpfc_hba *phba; 418 uint8_t *name; 419 int warn_on = 0; 420 int fcf_inuse = 0; 421 bool recovering = false; 422 struct fc_vport *fc_vport = NULL; 423 unsigned long iflags; 424 425 vport = ndlp->vport; 426 name = (uint8_t *)&ndlp->nlp_portname; 427 phba = vport->phba; 428 429 if (phba->sli_rev == LPFC_SLI_REV4) 430 fcf_inuse = lpfc_fcf_inuse(phba); 431 432 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 433 "rport devlosstmo:did:x%x type:x%x id:x%x", 434 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 435 436 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 437 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 438 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 439 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 440 441 /* If the driver is recovering the rport, ignore devloss. */ 442 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 443 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 444 "0284 Devloss timeout Ignored on " 445 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 446 "NPort x%x\n", 447 *name, *(name+1), *(name+2), *(name+3), 448 *(name+4), *(name+5), *(name+6), *(name+7), 449 ndlp->nlp_DID); 450 451 spin_lock_irqsave(&ndlp->lock, iflags); 452 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 453 spin_unlock_irqrestore(&ndlp->lock, iflags); 454 return fcf_inuse; 455 } 456 457 /* Fabric nodes are done. */ 458 if (ndlp->nlp_type & NLP_FABRIC) { 459 spin_lock_irqsave(&ndlp->lock, iflags); 460 461 /* In massive vport configuration settings or when the FLOGI 462 * completes with a sequence timeout, it's possible 463 * dev_loss_tmo fired during node recovery. The driver has to 464 * account for this race to allow for recovery and keep 465 * the reference counting correct. 466 */ 467 switch (ndlp->nlp_DID) { 468 case Fabric_DID: 469 fc_vport = vport->fc_vport; 470 if (fc_vport) { 471 /* NPIV path. */ 472 if (fc_vport->vport_state == 473 FC_VPORT_INITIALIZING) 474 recovering = true; 475 } else { 476 /* Physical port path. */ 477 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING) 478 recovering = true; 479 } 480 break; 481 case Fabric_Cntl_DID: 482 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 483 recovering = true; 484 break; 485 case FDMI_DID: 486 fallthrough; 487 case NameServer_DID: 488 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 489 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 490 recovering = true; 491 break; 492 } 493 spin_unlock_irqrestore(&ndlp->lock, iflags); 494 495 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 496 * the following lpfc_nlp_put is necessary after fabric node is 497 * recovered. 498 */ 499 if (recovering) { 500 lpfc_printf_vlog(vport, KERN_INFO, 501 LOG_DISCOVERY | LOG_NODE, 502 "8436 Devloss timeout marked on " 503 "DID x%x refcnt %d ndlp %p " 504 "flag x%x port_state = x%x\n", 505 ndlp->nlp_DID, kref_read(&ndlp->kref), 506 ndlp, ndlp->nlp_flag, 507 vport->port_state); 508 spin_lock_irqsave(&ndlp->lock, iflags); 509 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 510 spin_unlock_irqrestore(&ndlp->lock, iflags); 511 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 512 /* Fabric node fully recovered before this dev_loss_tmo 513 * queue work is processed. Thus, ignore the 514 * dev_loss_tmo event. 515 */ 516 lpfc_printf_vlog(vport, KERN_INFO, 517 LOG_DISCOVERY | LOG_NODE, 518 "8437 Devloss timeout ignored on " 519 "DID x%x refcnt %d ndlp %p " 520 "flag x%x port_state = x%x\n", 521 ndlp->nlp_DID, kref_read(&ndlp->kref), 522 ndlp, ndlp->nlp_flag, 523 vport->port_state); 524 return fcf_inuse; 525 } 526 527 spin_lock_irqsave(&ndlp->lock, iflags); 528 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 529 spin_unlock_irqrestore(&ndlp->lock, iflags); 530 lpfc_nlp_put(ndlp); 531 return fcf_inuse; 532 } 533 534 if (ndlp->nlp_sid != NLP_NO_SID) { 535 warn_on = 1; 536 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 537 } 538 539 if (warn_on) { 540 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 541 "0203 Devloss timeout on " 542 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 543 "NPort x%06x Data: x%x x%x x%x refcnt %d\n", 544 *name, *(name+1), *(name+2), *(name+3), 545 *(name+4), *(name+5), *(name+6), *(name+7), 546 ndlp->nlp_DID, ndlp->nlp_flag, 547 ndlp->nlp_state, ndlp->nlp_rpi, 548 kref_read(&ndlp->kref)); 549 } else { 550 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 551 "0204 Devloss timeout on " 552 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 553 "NPort x%06x Data: x%x x%x x%x\n", 554 *name, *(name+1), *(name+2), *(name+3), 555 *(name+4), *(name+5), *(name+6), *(name+7), 556 ndlp->nlp_DID, ndlp->nlp_flag, 557 ndlp->nlp_state, ndlp->nlp_rpi); 558 } 559 560 /* If we are devloss, but we are in the process of rediscovering the 561 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 562 */ 563 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 564 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 565 return fcf_inuse; 566 } 567 568 spin_lock_irqsave(&ndlp->lock, iflags); 569 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 570 spin_unlock_irqrestore(&ndlp->lock, iflags); 571 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 572 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 573 574 return fcf_inuse; 575 } 576 577 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 578 { 579 struct lpfc_vport *vport; 580 struct lpfc_vport **vports; 581 int i; 582 583 vports = lpfc_create_vport_work_array(phba); 584 if (!vports) 585 return; 586 587 for (i = 0; i <= phba->max_vports; i++) { 588 if ((!vports[i]) && (i == 0)) 589 vport = phba->pport; 590 else 591 vport = vports[i]; 592 if (!vport) 593 break; 594 595 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 596 if (!lpfc_issue_els_qfpa(vport)) 597 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 598 } 599 } 600 lpfc_destroy_vport_work_array(phba, vports); 601 } 602 603 /** 604 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 605 * @phba: Pointer to hba context object. 606 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 607 * @nlp_did: remote node identifer with devloss timeout. 608 * 609 * This function is called from the worker thread after invoking devloss 610 * timeout handler and releasing the reference count for the ndlp with 611 * which the devloss timeout was handled for SLI4 host. For the devloss 612 * timeout of the last remote node which had been in use of FCF, when this 613 * routine is invoked, it shall be guaranteed that none of the remote are 614 * in-use of FCF. When devloss timeout to the last remote using the FCF, 615 * if the FIP engine is neither in FCF table scan process nor roundrobin 616 * failover process, the in-use FCF shall be unregistered. If the FIP 617 * engine is in FCF discovery process, the devloss timeout state shall 618 * be set for either the FCF table scan process or roundrobin failover 619 * process to unregister the in-use FCF. 620 **/ 621 static void 622 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 623 uint32_t nlp_did) 624 { 625 /* If devloss timeout happened to a remote node when FCF had no 626 * longer been in-use, do nothing. 627 */ 628 if (!fcf_inuse) 629 return; 630 631 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 632 spin_lock_irq(&phba->hbalock); 633 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 634 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 635 spin_unlock_irq(&phba->hbalock); 636 return; 637 } 638 phba->hba_flag |= HBA_DEVLOSS_TMO; 639 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 640 "2847 Last remote node (x%x) using " 641 "FCF devloss tmo\n", nlp_did); 642 } 643 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 644 spin_unlock_irq(&phba->hbalock); 645 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 646 "2868 Devloss tmo to FCF rediscovery " 647 "in progress\n"); 648 return; 649 } 650 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 651 spin_unlock_irq(&phba->hbalock); 652 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 653 "2869 Devloss tmo to idle FIP engine, " 654 "unreg in-use FCF and rescan.\n"); 655 /* Unregister in-use FCF and rescan */ 656 lpfc_unregister_fcf_rescan(phba); 657 return; 658 } 659 spin_unlock_irq(&phba->hbalock); 660 if (phba->hba_flag & FCF_TS_INPROG) 661 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 662 "2870 FCF table scan in progress\n"); 663 if (phba->hba_flag & FCF_RR_INPROG) 664 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 665 "2871 FLOGI roundrobin FCF failover " 666 "in progress\n"); 667 } 668 lpfc_unregister_unused_fcf(phba); 669 } 670 671 /** 672 * lpfc_alloc_fast_evt - Allocates data structure for posting event 673 * @phba: Pointer to hba context object. 674 * 675 * This function is called from the functions which need to post 676 * events from interrupt context. This function allocates data 677 * structure required for posting event. It also keeps track of 678 * number of events pending and prevent event storm when there are 679 * too many events. 680 **/ 681 struct lpfc_fast_path_event * 682 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 683 struct lpfc_fast_path_event *ret; 684 685 /* If there are lot of fast event do not exhaust memory due to this */ 686 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 687 return NULL; 688 689 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 690 GFP_ATOMIC); 691 if (ret) { 692 atomic_inc(&phba->fast_event_count); 693 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 694 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 695 } 696 return ret; 697 } 698 699 /** 700 * lpfc_free_fast_evt - Frees event data structure 701 * @phba: Pointer to hba context object. 702 * @evt: Event object which need to be freed. 703 * 704 * This function frees the data structure required for posting 705 * events. 706 **/ 707 void 708 lpfc_free_fast_evt(struct lpfc_hba *phba, 709 struct lpfc_fast_path_event *evt) { 710 711 atomic_dec(&phba->fast_event_count); 712 kfree(evt); 713 } 714 715 /** 716 * lpfc_send_fastpath_evt - Posts events generated from fast path 717 * @phba: Pointer to hba context object. 718 * @evtp: Event data structure. 719 * 720 * This function is called from worker thread, when the interrupt 721 * context need to post an event. This function posts the event 722 * to fc transport netlink interface. 723 **/ 724 static void 725 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 726 struct lpfc_work_evt *evtp) 727 { 728 unsigned long evt_category, evt_sub_category; 729 struct lpfc_fast_path_event *fast_evt_data; 730 char *evt_data; 731 uint32_t evt_data_size; 732 struct Scsi_Host *shost; 733 734 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 735 work_evt); 736 737 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 738 evt_sub_category = (unsigned long) fast_evt_data->un. 739 fabric_evt.subcategory; 740 shost = lpfc_shost_from_vport(fast_evt_data->vport); 741 if (evt_category == FC_REG_FABRIC_EVENT) { 742 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 743 evt_data = (char *) &fast_evt_data->un.read_check_error; 744 evt_data_size = sizeof(fast_evt_data->un. 745 read_check_error); 746 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 747 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 748 evt_data = (char *) &fast_evt_data->un.fabric_evt; 749 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 750 } else { 751 lpfc_free_fast_evt(phba, fast_evt_data); 752 return; 753 } 754 } else if (evt_category == FC_REG_SCSI_EVENT) { 755 switch (evt_sub_category) { 756 case LPFC_EVENT_QFULL: 757 case LPFC_EVENT_DEVBSY: 758 evt_data = (char *) &fast_evt_data->un.scsi_evt; 759 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 760 break; 761 case LPFC_EVENT_CHECK_COND: 762 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 763 evt_data_size = sizeof(fast_evt_data->un. 764 check_cond_evt); 765 break; 766 case LPFC_EVENT_VARQUEDEPTH: 767 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 768 evt_data_size = sizeof(fast_evt_data->un. 769 queue_depth_evt); 770 break; 771 default: 772 lpfc_free_fast_evt(phba, fast_evt_data); 773 return; 774 } 775 } else { 776 lpfc_free_fast_evt(phba, fast_evt_data); 777 return; 778 } 779 780 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 781 fc_host_post_vendor_event(shost, 782 fc_get_event_number(), 783 evt_data_size, 784 evt_data, 785 LPFC_NL_VENDOR_ID); 786 787 lpfc_free_fast_evt(phba, fast_evt_data); 788 return; 789 } 790 791 static void 792 lpfc_work_list_done(struct lpfc_hba *phba) 793 { 794 struct lpfc_work_evt *evtp = NULL; 795 struct lpfc_nodelist *ndlp; 796 int free_evt; 797 int fcf_inuse; 798 uint32_t nlp_did; 799 bool hba_pci_err; 800 801 spin_lock_irq(&phba->hbalock); 802 while (!list_empty(&phba->work_list)) { 803 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 804 evt_listp); 805 spin_unlock_irq(&phba->hbalock); 806 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 807 free_evt = 1; 808 switch (evtp->evt) { 809 case LPFC_EVT_ELS_RETRY: 810 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 811 if (!hba_pci_err) { 812 lpfc_els_retry_delay_handler(ndlp); 813 free_evt = 0; /* evt is part of ndlp */ 814 } 815 /* decrement the node reference count held 816 * for this queued work 817 */ 818 lpfc_nlp_put(ndlp); 819 break; 820 case LPFC_EVT_DEV_LOSS: 821 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 822 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 823 free_evt = 0; 824 /* decrement the node reference count held for 825 * this queued work 826 */ 827 nlp_did = ndlp->nlp_DID; 828 lpfc_nlp_put(ndlp); 829 if (phba->sli_rev == LPFC_SLI_REV4) 830 lpfc_sli4_post_dev_loss_tmo_handler(phba, 831 fcf_inuse, 832 nlp_did); 833 break; 834 case LPFC_EVT_RECOVER_PORT: 835 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 836 if (!hba_pci_err) { 837 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 838 free_evt = 0; 839 } 840 /* decrement the node reference count held for 841 * this queued work 842 */ 843 lpfc_nlp_put(ndlp); 844 break; 845 case LPFC_EVT_ONLINE: 846 if (phba->link_state < LPFC_LINK_DOWN) 847 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 848 else 849 *(int *) (evtp->evt_arg1) = 0; 850 complete((struct completion *)(evtp->evt_arg2)); 851 break; 852 case LPFC_EVT_OFFLINE_PREP: 853 if (phba->link_state >= LPFC_LINK_DOWN) 854 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 855 *(int *)(evtp->evt_arg1) = 0; 856 complete((struct completion *)(evtp->evt_arg2)); 857 break; 858 case LPFC_EVT_OFFLINE: 859 lpfc_offline(phba); 860 lpfc_sli_brdrestart(phba); 861 *(int *)(evtp->evt_arg1) = 862 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 863 lpfc_unblock_mgmt_io(phba); 864 complete((struct completion *)(evtp->evt_arg2)); 865 break; 866 case LPFC_EVT_WARM_START: 867 lpfc_offline(phba); 868 lpfc_reset_barrier(phba); 869 lpfc_sli_brdreset(phba); 870 lpfc_hba_down_post(phba); 871 *(int *)(evtp->evt_arg1) = 872 lpfc_sli_brdready(phba, HS_MBRDY); 873 lpfc_unblock_mgmt_io(phba); 874 complete((struct completion *)(evtp->evt_arg2)); 875 break; 876 case LPFC_EVT_KILL: 877 lpfc_offline(phba); 878 *(int *)(evtp->evt_arg1) 879 = (phba->pport->stopped) 880 ? 0 : lpfc_sli_brdkill(phba); 881 lpfc_unblock_mgmt_io(phba); 882 complete((struct completion *)(evtp->evt_arg2)); 883 break; 884 case LPFC_EVT_FASTPATH_MGMT_EVT: 885 lpfc_send_fastpath_evt(phba, evtp); 886 free_evt = 0; 887 break; 888 case LPFC_EVT_RESET_HBA: 889 if (!(phba->pport->load_flag & FC_UNLOADING)) 890 lpfc_reset_hba(phba); 891 break; 892 } 893 if (free_evt) 894 kfree(evtp); 895 spin_lock_irq(&phba->hbalock); 896 } 897 spin_unlock_irq(&phba->hbalock); 898 899 } 900 901 static void 902 lpfc_work_done(struct lpfc_hba *phba) 903 { 904 struct lpfc_sli_ring *pring; 905 uint32_t ha_copy, status, control, work_port_events; 906 struct lpfc_vport **vports; 907 struct lpfc_vport *vport; 908 int i; 909 bool hba_pci_err; 910 911 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 912 spin_lock_irq(&phba->hbalock); 913 ha_copy = phba->work_ha; 914 phba->work_ha = 0; 915 spin_unlock_irq(&phba->hbalock); 916 if (hba_pci_err) 917 ha_copy = 0; 918 919 /* First, try to post the next mailbox command to SLI4 device */ 920 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 921 lpfc_sli4_post_async_mbox(phba); 922 923 if (ha_copy & HA_ERATT) { 924 /* Handle the error attention event */ 925 lpfc_handle_eratt(phba); 926 927 if (phba->fw_dump_cmpl) { 928 complete(phba->fw_dump_cmpl); 929 phba->fw_dump_cmpl = NULL; 930 } 931 } 932 933 if (ha_copy & HA_MBATT) 934 lpfc_sli_handle_mb_event(phba); 935 936 if (ha_copy & HA_LATT) 937 lpfc_handle_latt(phba); 938 939 /* Handle VMID Events */ 940 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 941 if (phba->pport->work_port_events & 942 WORKER_CHECK_VMID_ISSUE_QFPA) { 943 lpfc_check_vmid_qfpa_issue(phba); 944 phba->pport->work_port_events &= 945 ~WORKER_CHECK_VMID_ISSUE_QFPA; 946 } 947 if (phba->pport->work_port_events & 948 WORKER_CHECK_INACTIVE_VMID) { 949 lpfc_check_inactive_vmid(phba); 950 phba->pport->work_port_events &= 951 ~WORKER_CHECK_INACTIVE_VMID; 952 } 953 } 954 955 /* Process SLI4 events */ 956 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 957 if (phba->hba_flag & HBA_RRQ_ACTIVE) 958 lpfc_handle_rrq_active(phba); 959 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 960 lpfc_sli4_els_xri_abort_event_proc(phba); 961 if (phba->hba_flag & ASYNC_EVENT) 962 lpfc_sli4_async_event_proc(phba); 963 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 964 spin_lock_irq(&phba->hbalock); 965 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 966 spin_unlock_irq(&phba->hbalock); 967 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 968 } 969 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 970 lpfc_sli4_fcf_redisc_event_proc(phba); 971 } 972 973 vports = lpfc_create_vport_work_array(phba); 974 if (vports != NULL) 975 for (i = 0; i <= phba->max_vports; i++) { 976 /* 977 * We could have no vports in array if unloading, so if 978 * this happens then just use the pport 979 */ 980 if (vports[i] == NULL && i == 0) 981 vport = phba->pport; 982 else 983 vport = vports[i]; 984 if (vport == NULL) 985 break; 986 spin_lock_irq(&vport->work_port_lock); 987 work_port_events = vport->work_port_events; 988 vport->work_port_events &= ~work_port_events; 989 spin_unlock_irq(&vport->work_port_lock); 990 if (hba_pci_err) 991 continue; 992 if (work_port_events & WORKER_DISC_TMO) 993 lpfc_disc_timeout_handler(vport); 994 if (work_port_events & WORKER_ELS_TMO) 995 lpfc_els_timeout_handler(vport); 996 if (work_port_events & WORKER_HB_TMO) 997 lpfc_hb_timeout_handler(phba); 998 if (work_port_events & WORKER_MBOX_TMO) 999 lpfc_mbox_timeout_handler(phba); 1000 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 1001 lpfc_unblock_fabric_iocbs(phba); 1002 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 1003 lpfc_ramp_down_queue_handler(phba); 1004 if (work_port_events & WORKER_DELAYED_DISC_TMO) 1005 lpfc_delayed_disc_timeout_handler(vport); 1006 } 1007 lpfc_destroy_vport_work_array(phba, vports); 1008 1009 pring = lpfc_phba_elsring(phba); 1010 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 1011 status >>= (4*LPFC_ELS_RING); 1012 if (pring && (status & HA_RXMASK || 1013 pring->flag & LPFC_DEFERRED_RING_EVENT || 1014 phba->hba_flag & HBA_SP_QUEUE_EVT)) { 1015 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1016 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1017 /* Preserve legacy behavior. */ 1018 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT)) 1019 set_bit(LPFC_DATA_READY, &phba->data_flags); 1020 } else { 1021 /* Driver could have abort request completed in queue 1022 * when link goes down. Allow for this transition. 1023 */ 1024 if (phba->link_state >= LPFC_LINK_DOWN || 1025 phba->link_flag & LS_MDS_LOOPBACK) { 1026 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1027 lpfc_sli_handle_slow_ring_event(phba, pring, 1028 (status & 1029 HA_RXMASK)); 1030 } 1031 } 1032 if (phba->sli_rev == LPFC_SLI_REV4) 1033 lpfc_drain_txq(phba); 1034 /* 1035 * Turn on Ring interrupts 1036 */ 1037 if (phba->sli_rev <= LPFC_SLI_REV3) { 1038 spin_lock_irq(&phba->hbalock); 1039 control = readl(phba->HCregaddr); 1040 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1041 lpfc_debugfs_slow_ring_trc(phba, 1042 "WRK Enable ring: cntl:x%x hacopy:x%x", 1043 control, ha_copy, 0); 1044 1045 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1046 writel(control, phba->HCregaddr); 1047 readl(phba->HCregaddr); /* flush */ 1048 } else { 1049 lpfc_debugfs_slow_ring_trc(phba, 1050 "WRK Ring ok: cntl:x%x hacopy:x%x", 1051 control, ha_copy, 0); 1052 } 1053 spin_unlock_irq(&phba->hbalock); 1054 } 1055 } 1056 lpfc_work_list_done(phba); 1057 } 1058 1059 int 1060 lpfc_do_work(void *p) 1061 { 1062 struct lpfc_hba *phba = p; 1063 int rc; 1064 1065 set_user_nice(current, MIN_NICE); 1066 current->flags |= PF_NOFREEZE; 1067 phba->data_flags = 0; 1068 1069 while (!kthread_should_stop()) { 1070 /* wait and check worker queue activities */ 1071 rc = wait_event_interruptible(phba->work_waitq, 1072 (test_and_clear_bit(LPFC_DATA_READY, 1073 &phba->data_flags) 1074 || kthread_should_stop())); 1075 /* Signal wakeup shall terminate the worker thread */ 1076 if (rc) { 1077 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1078 "0433 Wakeup on signal: rc=x%x\n", rc); 1079 break; 1080 } 1081 1082 /* Attend pending lpfc data processing */ 1083 lpfc_work_done(phba); 1084 } 1085 phba->worker_thread = NULL; 1086 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1087 "0432 Worker thread stopped.\n"); 1088 return 0; 1089 } 1090 1091 /* 1092 * This is only called to handle FC worker events. Since this a rare 1093 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1094 * embedding it in the IOCB. 1095 */ 1096 int 1097 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1098 uint32_t evt) 1099 { 1100 struct lpfc_work_evt *evtp; 1101 unsigned long flags; 1102 1103 /* 1104 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1105 * be queued to worker thread for processing 1106 */ 1107 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1108 if (!evtp) 1109 return 0; 1110 1111 evtp->evt_arg1 = arg1; 1112 evtp->evt_arg2 = arg2; 1113 evtp->evt = evt; 1114 1115 spin_lock_irqsave(&phba->hbalock, flags); 1116 list_add_tail(&evtp->evt_listp, &phba->work_list); 1117 spin_unlock_irqrestore(&phba->hbalock, flags); 1118 1119 lpfc_worker_wake_up(phba); 1120 1121 return 1; 1122 } 1123 1124 void 1125 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1126 { 1127 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1128 struct lpfc_hba *phba = vport->phba; 1129 struct lpfc_nodelist *ndlp, *next_ndlp; 1130 1131 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1132 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1133 ((vport->port_type == LPFC_NPIV_PORT) && 1134 ((ndlp->nlp_DID == NameServer_DID) || 1135 (ndlp->nlp_DID == FDMI_DID) || 1136 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1137 lpfc_unreg_rpi(vport, ndlp); 1138 1139 /* Leave Fabric nodes alone on link down */ 1140 if ((phba->sli_rev < LPFC_SLI_REV4) && 1141 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1142 continue; 1143 1144 /* Notify transport of connectivity loss to trigger cleanup. */ 1145 if (phba->nvmet_support && 1146 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1147 lpfc_nvmet_invalidate_host(phba, ndlp); 1148 1149 lpfc_disc_state_machine(vport, ndlp, NULL, 1150 remove 1151 ? NLP_EVT_DEVICE_RM 1152 : NLP_EVT_DEVICE_RECOVERY); 1153 } 1154 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1155 if (phba->sli_rev == LPFC_SLI_REV4) 1156 lpfc_sli4_unreg_all_rpis(vport); 1157 lpfc_mbx_unreg_vpi(vport); 1158 spin_lock_irq(shost->host_lock); 1159 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1160 spin_unlock_irq(shost->host_lock); 1161 } 1162 } 1163 1164 void 1165 lpfc_port_link_failure(struct lpfc_vport *vport) 1166 { 1167 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1168 1169 /* Cleanup any outstanding received buffers */ 1170 lpfc_cleanup_rcv_buffers(vport); 1171 1172 /* Cleanup any outstanding RSCN activity */ 1173 lpfc_els_flush_rscn(vport); 1174 1175 /* Cleanup any outstanding ELS commands */ 1176 lpfc_els_flush_cmd(vport); 1177 1178 lpfc_cleanup_rpis(vport, 0); 1179 1180 /* Turn off discovery timer if its running */ 1181 lpfc_can_disctmo(vport); 1182 } 1183 1184 void 1185 lpfc_linkdown_port(struct lpfc_vport *vport) 1186 { 1187 struct lpfc_hba *phba = vport->phba; 1188 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1189 1190 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1191 fc_host_post_event(shost, fc_get_event_number(), 1192 FCH_EVT_LINKDOWN, 0); 1193 1194 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1195 "Link Down: state:x%x rtry:x%x flg:x%x", 1196 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1197 1198 lpfc_port_link_failure(vport); 1199 1200 /* Stop delayed Nport discovery */ 1201 spin_lock_irq(shost->host_lock); 1202 vport->fc_flag &= ~FC_DISC_DELAYED; 1203 spin_unlock_irq(shost->host_lock); 1204 del_timer_sync(&vport->delayed_disc_tmo); 1205 1206 if (phba->sli_rev == LPFC_SLI_REV4 && 1207 vport->port_type == LPFC_PHYSICAL_PORT && 1208 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1209 /* Assume success on link up */ 1210 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1211 } 1212 } 1213 1214 int 1215 lpfc_linkdown(struct lpfc_hba *phba) 1216 { 1217 struct lpfc_vport *vport = phba->pport; 1218 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1219 struct lpfc_vport **vports; 1220 LPFC_MBOXQ_t *mb; 1221 int i; 1222 int offline; 1223 1224 if (phba->link_state == LPFC_LINK_DOWN) 1225 return 0; 1226 1227 /* Block all SCSI stack I/Os */ 1228 lpfc_scsi_dev_block(phba); 1229 offline = pci_channel_offline(phba->pcidev); 1230 1231 phba->defer_flogi_acc_flag = false; 1232 1233 /* Clear external loopback plug detected flag */ 1234 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1235 1236 spin_lock_irq(&phba->hbalock); 1237 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1238 spin_unlock_irq(&phba->hbalock); 1239 if (phba->link_state > LPFC_LINK_DOWN) { 1240 phba->link_state = LPFC_LINK_DOWN; 1241 if (phba->sli4_hba.conf_trunk) { 1242 phba->trunk_link.link0.state = 0; 1243 phba->trunk_link.link1.state = 0; 1244 phba->trunk_link.link2.state = 0; 1245 phba->trunk_link.link3.state = 0; 1246 phba->trunk_link.phy_lnk_speed = 1247 LPFC_LINK_SPEED_UNKNOWN; 1248 phba->sli4_hba.link_state.logical_speed = 1249 LPFC_LINK_SPEED_UNKNOWN; 1250 } 1251 spin_lock_irq(shost->host_lock); 1252 phba->pport->fc_flag &= ~FC_LBIT; 1253 spin_unlock_irq(shost->host_lock); 1254 } 1255 vports = lpfc_create_vport_work_array(phba); 1256 if (vports != NULL) { 1257 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1258 /* Issue a LINK DOWN event to all nodes */ 1259 lpfc_linkdown_port(vports[i]); 1260 1261 vports[i]->fc_myDID = 0; 1262 1263 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1264 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1265 if (phba->nvmet_support) 1266 lpfc_nvmet_update_targetport(phba); 1267 else 1268 lpfc_nvme_update_localport(vports[i]); 1269 } 1270 } 1271 } 1272 lpfc_destroy_vport_work_array(phba, vports); 1273 1274 /* Clean up any SLI3 firmware default rpi's */ 1275 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1276 goto skip_unreg_did; 1277 1278 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1279 if (mb) { 1280 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1281 mb->vport = vport; 1282 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1283 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1284 == MBX_NOT_FINISHED) { 1285 mempool_free(mb, phba->mbox_mem_pool); 1286 } 1287 } 1288 1289 skip_unreg_did: 1290 /* Setup myDID for link up if we are in pt2pt mode */ 1291 if (phba->pport->fc_flag & FC_PT2PT) { 1292 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1293 if (mb) { 1294 lpfc_config_link(phba, mb); 1295 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1296 mb->vport = vport; 1297 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1298 == MBX_NOT_FINISHED) { 1299 mempool_free(mb, phba->mbox_mem_pool); 1300 } 1301 } 1302 spin_lock_irq(shost->host_lock); 1303 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 1304 phba->pport->rcv_flogi_cnt = 0; 1305 spin_unlock_irq(shost->host_lock); 1306 } 1307 return 0; 1308 } 1309 1310 static void 1311 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1312 { 1313 struct lpfc_nodelist *ndlp; 1314 1315 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1316 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1317 1318 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1319 continue; 1320 if (ndlp->nlp_type & NLP_FABRIC) { 1321 /* On Linkup its safe to clean up the ndlp 1322 * from Fabric connections. 1323 */ 1324 if (ndlp->nlp_DID != Fabric_DID) 1325 lpfc_unreg_rpi(vport, ndlp); 1326 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1327 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1328 /* Fail outstanding IO now since device is 1329 * marked for PLOGI. 1330 */ 1331 lpfc_unreg_rpi(vport, ndlp); 1332 } 1333 } 1334 } 1335 1336 static void 1337 lpfc_linkup_port(struct lpfc_vport *vport) 1338 { 1339 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1340 struct lpfc_hba *phba = vport->phba; 1341 1342 if ((vport->load_flag & FC_UNLOADING) != 0) 1343 return; 1344 1345 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1346 "Link Up: top:x%x speed:x%x flg:x%x", 1347 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1348 1349 /* If NPIV is not enabled, only bring the physical port up */ 1350 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1351 (vport != phba->pport)) 1352 return; 1353 1354 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1355 fc_host_post_event(shost, fc_get_event_number(), 1356 FCH_EVT_LINKUP, 0); 1357 1358 spin_lock_irq(shost->host_lock); 1359 if (phba->defer_flogi_acc_flag) 1360 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE | 1361 FC_NLP_MORE | FC_RSCN_DISCOVERY); 1362 else 1363 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | 1364 FC_ABORT_DISCOVERY | FC_RSCN_MODE | 1365 FC_NLP_MORE | FC_RSCN_DISCOVERY); 1366 vport->fc_flag |= FC_NDISC_ACTIVE; 1367 vport->fc_ns_retry = 0; 1368 spin_unlock_irq(shost->host_lock); 1369 lpfc_setup_fdmi_mask(vport); 1370 1371 lpfc_linkup_cleanup_nodes(vport); 1372 } 1373 1374 static int 1375 lpfc_linkup(struct lpfc_hba *phba) 1376 { 1377 struct lpfc_vport **vports; 1378 int i; 1379 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1380 1381 phba->link_state = LPFC_LINK_UP; 1382 1383 /* Unblock fabric iocbs if they are blocked */ 1384 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1385 del_timer_sync(&phba->fabric_block_timer); 1386 1387 vports = lpfc_create_vport_work_array(phba); 1388 if (vports != NULL) 1389 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1390 lpfc_linkup_port(vports[i]); 1391 lpfc_destroy_vport_work_array(phba, vports); 1392 1393 /* Clear the pport flogi counter in case the link down was 1394 * absorbed without an ACQE. No lock here - in worker thread 1395 * and discovery is synchronized. 1396 */ 1397 spin_lock_irq(shost->host_lock); 1398 phba->pport->rcv_flogi_cnt = 0; 1399 spin_unlock_irq(shost->host_lock); 1400 1401 /* reinitialize initial HBA flag */ 1402 phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL); 1403 1404 return 0; 1405 } 1406 1407 /* 1408 * This routine handles processing a CLEAR_LA mailbox 1409 * command upon completion. It is setup in the LPFC_MBOXQ 1410 * as the completion routine when the command is 1411 * handed off to the SLI layer. SLI3 only. 1412 */ 1413 static void 1414 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1415 { 1416 struct lpfc_vport *vport = pmb->vport; 1417 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1418 struct lpfc_sli *psli = &phba->sli; 1419 MAILBOX_t *mb = &pmb->u.mb; 1420 uint32_t control; 1421 1422 /* Since we don't do discovery right now, turn these off here */ 1423 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1424 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1425 1426 /* Check for error */ 1427 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1428 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1429 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1430 "0320 CLEAR_LA mbxStatus error x%x hba " 1431 "state x%x\n", 1432 mb->mbxStatus, vport->port_state); 1433 phba->link_state = LPFC_HBA_ERROR; 1434 goto out; 1435 } 1436 1437 if (vport->port_type == LPFC_PHYSICAL_PORT) 1438 phba->link_state = LPFC_HBA_READY; 1439 1440 spin_lock_irq(&phba->hbalock); 1441 psli->sli_flag |= LPFC_PROCESS_LA; 1442 control = readl(phba->HCregaddr); 1443 control |= HC_LAINT_ENA; 1444 writel(control, phba->HCregaddr); 1445 readl(phba->HCregaddr); /* flush */ 1446 spin_unlock_irq(&phba->hbalock); 1447 mempool_free(pmb, phba->mbox_mem_pool); 1448 return; 1449 1450 out: 1451 /* Device Discovery completes */ 1452 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1453 "0225 Device Discovery completes\n"); 1454 mempool_free(pmb, phba->mbox_mem_pool); 1455 1456 spin_lock_irq(shost->host_lock); 1457 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1458 spin_unlock_irq(shost->host_lock); 1459 1460 lpfc_can_disctmo(vport); 1461 1462 /* turn on Link Attention interrupts */ 1463 1464 spin_lock_irq(&phba->hbalock); 1465 psli->sli_flag |= LPFC_PROCESS_LA; 1466 control = readl(phba->HCregaddr); 1467 control |= HC_LAINT_ENA; 1468 writel(control, phba->HCregaddr); 1469 readl(phba->HCregaddr); /* flush */ 1470 spin_unlock_irq(&phba->hbalock); 1471 1472 return; 1473 } 1474 1475 void 1476 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1477 { 1478 struct lpfc_vport *vport = pmb->vport; 1479 LPFC_MBOXQ_t *sparam_mb; 1480 u16 status = pmb->u.mb.mbxStatus; 1481 int rc; 1482 1483 mempool_free(pmb, phba->mbox_mem_pool); 1484 1485 if (status) 1486 goto out; 1487 1488 /* don't perform discovery for SLI4 loopback diagnostic test */ 1489 if ((phba->sli_rev == LPFC_SLI_REV4) && 1490 !(phba->hba_flag & HBA_FCOE_MODE) && 1491 (phba->link_flag & LS_LOOPBACK_MODE)) 1492 return; 1493 1494 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1495 vport->fc_flag & FC_PUBLIC_LOOP && 1496 !(vport->fc_flag & FC_LBIT)) { 1497 /* Need to wait for FAN - use discovery timer 1498 * for timeout. port_state is identically 1499 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1500 */ 1501 lpfc_set_disctmo(vport); 1502 return; 1503 } 1504 1505 /* Start discovery by sending a FLOGI. port_state is identically 1506 * LPFC_FLOGI while waiting for FLOGI cmpl. 1507 */ 1508 if (vport->port_state != LPFC_FLOGI) { 1509 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1510 * bb-credit recovery is in place. 1511 */ 1512 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1513 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1514 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1515 GFP_KERNEL); 1516 if (!sparam_mb) 1517 goto sparam_out; 1518 1519 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1520 if (rc) { 1521 mempool_free(sparam_mb, phba->mbox_mem_pool); 1522 goto sparam_out; 1523 } 1524 sparam_mb->vport = vport; 1525 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1526 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1527 if (rc == MBX_NOT_FINISHED) { 1528 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1529 MBOX_THD_UNLOCKED); 1530 goto sparam_out; 1531 } 1532 1533 phba->hba_flag |= HBA_DEFER_FLOGI; 1534 } else { 1535 lpfc_initial_flogi(vport); 1536 } 1537 } else { 1538 if (vport->fc_flag & FC_PT2PT) 1539 lpfc_disc_start(vport); 1540 } 1541 return; 1542 1543 out: 1544 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1545 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1546 status, vport->port_state); 1547 1548 sparam_out: 1549 lpfc_linkdown(phba); 1550 1551 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1552 "0200 CONFIG_LINK bad hba state x%x\n", 1553 vport->port_state); 1554 1555 lpfc_issue_clear_la(phba, vport); 1556 return; 1557 } 1558 1559 /** 1560 * lpfc_sli4_clear_fcf_rr_bmask 1561 * @phba: pointer to the struct lpfc_hba for this port. 1562 * This fucnction resets the round robin bit mask and clears the 1563 * fcf priority list. The list deletions are done while holding the 1564 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1565 * from the lpfc_fcf_pri record. 1566 **/ 1567 void 1568 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1569 { 1570 struct lpfc_fcf_pri *fcf_pri; 1571 struct lpfc_fcf_pri *next_fcf_pri; 1572 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1573 spin_lock_irq(&phba->hbalock); 1574 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1575 &phba->fcf.fcf_pri_list, list) { 1576 list_del_init(&fcf_pri->list); 1577 fcf_pri->fcf_rec.flag = 0; 1578 } 1579 spin_unlock_irq(&phba->hbalock); 1580 } 1581 static void 1582 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1583 { 1584 struct lpfc_vport *vport = mboxq->vport; 1585 1586 if (mboxq->u.mb.mbxStatus) { 1587 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1588 "2017 REG_FCFI mbxStatus error x%x " 1589 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1590 vport->port_state); 1591 goto fail_out; 1592 } 1593 1594 /* Start FCoE discovery by sending a FLOGI. */ 1595 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1596 /* Set the FCFI registered flag */ 1597 spin_lock_irq(&phba->hbalock); 1598 phba->fcf.fcf_flag |= FCF_REGISTERED; 1599 spin_unlock_irq(&phba->hbalock); 1600 1601 /* If there is a pending FCoE event, restart FCF table scan. */ 1602 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1603 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1604 goto fail_out; 1605 1606 /* Mark successful completion of FCF table scan */ 1607 spin_lock_irq(&phba->hbalock); 1608 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1609 phba->hba_flag &= ~FCF_TS_INPROG; 1610 if (vport->port_state != LPFC_FLOGI) { 1611 phba->hba_flag |= FCF_RR_INPROG; 1612 spin_unlock_irq(&phba->hbalock); 1613 lpfc_issue_init_vfi(vport); 1614 goto out; 1615 } 1616 spin_unlock_irq(&phba->hbalock); 1617 goto out; 1618 1619 fail_out: 1620 spin_lock_irq(&phba->hbalock); 1621 phba->hba_flag &= ~FCF_RR_INPROG; 1622 spin_unlock_irq(&phba->hbalock); 1623 out: 1624 mempool_free(mboxq, phba->mbox_mem_pool); 1625 } 1626 1627 /** 1628 * lpfc_fab_name_match - Check if the fcf fabric name match. 1629 * @fab_name: pointer to fabric name. 1630 * @new_fcf_record: pointer to fcf record. 1631 * 1632 * This routine compare the fcf record's fabric name with provided 1633 * fabric name. If the fabric name are identical this function 1634 * returns 1 else return 0. 1635 **/ 1636 static uint32_t 1637 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1638 { 1639 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1640 return 0; 1641 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1642 return 0; 1643 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1644 return 0; 1645 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1646 return 0; 1647 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1648 return 0; 1649 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1650 return 0; 1651 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1652 return 0; 1653 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1654 return 0; 1655 return 1; 1656 } 1657 1658 /** 1659 * lpfc_sw_name_match - Check if the fcf switch name match. 1660 * @sw_name: pointer to switch name. 1661 * @new_fcf_record: pointer to fcf record. 1662 * 1663 * This routine compare the fcf record's switch name with provided 1664 * switch name. If the switch name are identical this function 1665 * returns 1 else return 0. 1666 **/ 1667 static uint32_t 1668 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1669 { 1670 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1671 return 0; 1672 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1673 return 0; 1674 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1675 return 0; 1676 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1677 return 0; 1678 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1679 return 0; 1680 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1681 return 0; 1682 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1683 return 0; 1684 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1685 return 0; 1686 return 1; 1687 } 1688 1689 /** 1690 * lpfc_mac_addr_match - Check if the fcf mac address match. 1691 * @mac_addr: pointer to mac address. 1692 * @new_fcf_record: pointer to fcf record. 1693 * 1694 * This routine compare the fcf record's mac address with HBA's 1695 * FCF mac address. If the mac addresses are identical this function 1696 * returns 1 else return 0. 1697 **/ 1698 static uint32_t 1699 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1700 { 1701 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1702 return 0; 1703 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1704 return 0; 1705 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1706 return 0; 1707 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1708 return 0; 1709 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1710 return 0; 1711 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1712 return 0; 1713 return 1; 1714 } 1715 1716 static bool 1717 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1718 { 1719 return (curr_vlan_id == new_vlan_id); 1720 } 1721 1722 /** 1723 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1724 * @phba: pointer to lpfc hba data structure. 1725 * @fcf_index: Index for the lpfc_fcf_record. 1726 * @new_fcf_record: pointer to hba fcf record. 1727 * 1728 * This routine updates the driver FCF priority record from the new HBA FCF 1729 * record. The hbalock is asserted held in the code path calling this 1730 * routine. 1731 **/ 1732 static void 1733 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1734 struct fcf_record *new_fcf_record 1735 ) 1736 { 1737 struct lpfc_fcf_pri *fcf_pri; 1738 1739 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1740 fcf_pri->fcf_rec.fcf_index = fcf_index; 1741 /* FCF record priority */ 1742 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1743 1744 } 1745 1746 /** 1747 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1748 * @fcf_rec: pointer to driver fcf record. 1749 * @new_fcf_record: pointer to fcf record. 1750 * 1751 * This routine copies the FCF information from the FCF 1752 * record to lpfc_hba data structure. 1753 **/ 1754 static void 1755 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1756 struct fcf_record *new_fcf_record) 1757 { 1758 /* Fabric name */ 1759 fcf_rec->fabric_name[0] = 1760 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1761 fcf_rec->fabric_name[1] = 1762 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1763 fcf_rec->fabric_name[2] = 1764 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1765 fcf_rec->fabric_name[3] = 1766 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1767 fcf_rec->fabric_name[4] = 1768 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1769 fcf_rec->fabric_name[5] = 1770 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1771 fcf_rec->fabric_name[6] = 1772 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1773 fcf_rec->fabric_name[7] = 1774 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1775 /* Mac address */ 1776 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1777 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1778 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1779 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1780 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1781 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1782 /* FCF record index */ 1783 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1784 /* FCF record priority */ 1785 fcf_rec->priority = new_fcf_record->fip_priority; 1786 /* Switch name */ 1787 fcf_rec->switch_name[0] = 1788 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1789 fcf_rec->switch_name[1] = 1790 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1791 fcf_rec->switch_name[2] = 1792 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1793 fcf_rec->switch_name[3] = 1794 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1795 fcf_rec->switch_name[4] = 1796 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1797 fcf_rec->switch_name[5] = 1798 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1799 fcf_rec->switch_name[6] = 1800 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1801 fcf_rec->switch_name[7] = 1802 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1803 } 1804 1805 /** 1806 * __lpfc_update_fcf_record - Update driver fcf record 1807 * @phba: pointer to lpfc hba data structure. 1808 * @fcf_rec: pointer to driver fcf record. 1809 * @new_fcf_record: pointer to hba fcf record. 1810 * @addr_mode: address mode to be set to the driver fcf record. 1811 * @vlan_id: vlan tag to be set to the driver fcf record. 1812 * @flag: flag bits to be set to the driver fcf record. 1813 * 1814 * This routine updates the driver FCF record from the new HBA FCF record 1815 * together with the address mode, vlan_id, and other informations. This 1816 * routine is called with the hbalock held. 1817 **/ 1818 static void 1819 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1820 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1821 uint16_t vlan_id, uint32_t flag) 1822 { 1823 lockdep_assert_held(&phba->hbalock); 1824 1825 /* Copy the fields from the HBA's FCF record */ 1826 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1827 /* Update other fields of driver FCF record */ 1828 fcf_rec->addr_mode = addr_mode; 1829 fcf_rec->vlan_id = vlan_id; 1830 fcf_rec->flag |= (flag | RECORD_VALID); 1831 __lpfc_update_fcf_record_pri(phba, 1832 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1833 new_fcf_record); 1834 } 1835 1836 /** 1837 * lpfc_register_fcf - Register the FCF with hba. 1838 * @phba: pointer to lpfc hba data structure. 1839 * 1840 * This routine issues a register fcfi mailbox command to register 1841 * the fcf with HBA. 1842 **/ 1843 static void 1844 lpfc_register_fcf(struct lpfc_hba *phba) 1845 { 1846 LPFC_MBOXQ_t *fcf_mbxq; 1847 int rc; 1848 1849 spin_lock_irq(&phba->hbalock); 1850 /* If the FCF is not available do nothing. */ 1851 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1852 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1853 spin_unlock_irq(&phba->hbalock); 1854 return; 1855 } 1856 1857 /* The FCF is already registered, start discovery */ 1858 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1859 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1860 phba->hba_flag &= ~FCF_TS_INPROG; 1861 if (phba->pport->port_state != LPFC_FLOGI && 1862 phba->pport->fc_flag & FC_FABRIC) { 1863 phba->hba_flag |= FCF_RR_INPROG; 1864 spin_unlock_irq(&phba->hbalock); 1865 lpfc_initial_flogi(phba->pport); 1866 return; 1867 } 1868 spin_unlock_irq(&phba->hbalock); 1869 return; 1870 } 1871 spin_unlock_irq(&phba->hbalock); 1872 1873 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1874 if (!fcf_mbxq) { 1875 spin_lock_irq(&phba->hbalock); 1876 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1877 spin_unlock_irq(&phba->hbalock); 1878 return; 1879 } 1880 1881 lpfc_reg_fcfi(phba, fcf_mbxq); 1882 fcf_mbxq->vport = phba->pport; 1883 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1884 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1885 if (rc == MBX_NOT_FINISHED) { 1886 spin_lock_irq(&phba->hbalock); 1887 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1888 spin_unlock_irq(&phba->hbalock); 1889 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1890 } 1891 1892 return; 1893 } 1894 1895 /** 1896 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1897 * @phba: pointer to lpfc hba data structure. 1898 * @new_fcf_record: pointer to fcf record. 1899 * @boot_flag: Indicates if this record used by boot bios. 1900 * @addr_mode: The address mode to be used by this FCF 1901 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1902 * 1903 * This routine compare the fcf record with connect list obtained from the 1904 * config region to decide if this FCF can be used for SAN discovery. It returns 1905 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1906 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1907 * is used by boot bios and addr_mode will indicate the addressing mode to be 1908 * used for this FCF when the function returns. 1909 * If the FCF record need to be used with a particular vlan id, the vlan is 1910 * set in the vlan_id on return of the function. If not VLAN tagging need to 1911 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1912 **/ 1913 static int 1914 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1915 struct fcf_record *new_fcf_record, 1916 uint32_t *boot_flag, uint32_t *addr_mode, 1917 uint16_t *vlan_id) 1918 { 1919 struct lpfc_fcf_conn_entry *conn_entry; 1920 int i, j, fcf_vlan_id = 0; 1921 1922 /* Find the lowest VLAN id in the FCF record */ 1923 for (i = 0; i < 512; i++) { 1924 if (new_fcf_record->vlan_bitmap[i]) { 1925 fcf_vlan_id = i * 8; 1926 j = 0; 1927 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1928 j++; 1929 fcf_vlan_id++; 1930 } 1931 break; 1932 } 1933 } 1934 1935 /* FCF not valid/available or solicitation in progress */ 1936 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1937 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1938 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1939 return 0; 1940 1941 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1942 *boot_flag = 0; 1943 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1944 new_fcf_record); 1945 if (phba->valid_vlan) 1946 *vlan_id = phba->vlan_id; 1947 else 1948 *vlan_id = LPFC_FCOE_NULL_VID; 1949 return 1; 1950 } 1951 1952 /* 1953 * If there are no FCF connection table entry, driver connect to all 1954 * FCFs. 1955 */ 1956 if (list_empty(&phba->fcf_conn_rec_list)) { 1957 *boot_flag = 0; 1958 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1959 new_fcf_record); 1960 1961 /* 1962 * When there are no FCF connect entries, use driver's default 1963 * addressing mode - FPMA. 1964 */ 1965 if (*addr_mode & LPFC_FCF_FPMA) 1966 *addr_mode = LPFC_FCF_FPMA; 1967 1968 /* If FCF record report a vlan id use that vlan id */ 1969 if (fcf_vlan_id) 1970 *vlan_id = fcf_vlan_id; 1971 else 1972 *vlan_id = LPFC_FCOE_NULL_VID; 1973 return 1; 1974 } 1975 1976 list_for_each_entry(conn_entry, 1977 &phba->fcf_conn_rec_list, list) { 1978 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1979 continue; 1980 1981 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1982 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1983 new_fcf_record)) 1984 continue; 1985 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1986 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1987 new_fcf_record)) 1988 continue; 1989 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1990 /* 1991 * If the vlan bit map does not have the bit set for the 1992 * vlan id to be used, then it is not a match. 1993 */ 1994 if (!(new_fcf_record->vlan_bitmap 1995 [conn_entry->conn_rec.vlan_tag / 8] & 1996 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1997 continue; 1998 } 1999 2000 /* 2001 * If connection record does not support any addressing mode, 2002 * skip the FCF record. 2003 */ 2004 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 2005 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2006 continue; 2007 2008 /* 2009 * Check if the connection record specifies a required 2010 * addressing mode. 2011 */ 2012 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2013 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2014 2015 /* 2016 * If SPMA required but FCF not support this continue. 2017 */ 2018 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2019 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2020 new_fcf_record) & LPFC_FCF_SPMA)) 2021 continue; 2022 2023 /* 2024 * If FPMA required but FCF not support this continue. 2025 */ 2026 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2027 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2028 new_fcf_record) & LPFC_FCF_FPMA)) 2029 continue; 2030 } 2031 2032 /* 2033 * This fcf record matches filtering criteria. 2034 */ 2035 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2036 *boot_flag = 1; 2037 else 2038 *boot_flag = 0; 2039 2040 /* 2041 * If user did not specify any addressing mode, or if the 2042 * preferred addressing mode specified by user is not supported 2043 * by FCF, allow fabric to pick the addressing mode. 2044 */ 2045 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2046 new_fcf_record); 2047 /* 2048 * If the user specified a required address mode, assign that 2049 * address mode 2050 */ 2051 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2052 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2053 *addr_mode = (conn_entry->conn_rec.flags & 2054 FCFCNCT_AM_SPMA) ? 2055 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2056 /* 2057 * If the user specified a preferred address mode, use the 2058 * addr mode only if FCF support the addr_mode. 2059 */ 2060 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2061 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2062 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2063 (*addr_mode & LPFC_FCF_SPMA)) 2064 *addr_mode = LPFC_FCF_SPMA; 2065 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2066 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2067 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2068 (*addr_mode & LPFC_FCF_FPMA)) 2069 *addr_mode = LPFC_FCF_FPMA; 2070 2071 /* If matching connect list has a vlan id, use it */ 2072 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2073 *vlan_id = conn_entry->conn_rec.vlan_tag; 2074 /* 2075 * If no vlan id is specified in connect list, use the vlan id 2076 * in the FCF record 2077 */ 2078 else if (fcf_vlan_id) 2079 *vlan_id = fcf_vlan_id; 2080 else 2081 *vlan_id = LPFC_FCOE_NULL_VID; 2082 2083 return 1; 2084 } 2085 2086 return 0; 2087 } 2088 2089 /** 2090 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2091 * @phba: pointer to lpfc hba data structure. 2092 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2093 * 2094 * This function check if there is any fcoe event pending while driver 2095 * scan FCF entries. If there is any pending event, it will restart the 2096 * FCF saning and return 1 else return 0. 2097 */ 2098 int 2099 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2100 { 2101 /* 2102 * If the Link is up and no FCoE events while in the 2103 * FCF discovery, no need to restart FCF discovery. 2104 */ 2105 if ((phba->link_state >= LPFC_LINK_UP) && 2106 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2107 return 0; 2108 2109 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2110 "2768 Pending link or FCF event during current " 2111 "handling of the previous event: link_state:x%x, " 2112 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2113 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2114 phba->fcoe_eventtag); 2115 2116 spin_lock_irq(&phba->hbalock); 2117 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2118 spin_unlock_irq(&phba->hbalock); 2119 2120 if (phba->link_state >= LPFC_LINK_UP) { 2121 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2122 "2780 Restart FCF table scan due to " 2123 "pending FCF event:evt_tag_at_scan:x%x, " 2124 "evt_tag_current:x%x\n", 2125 phba->fcoe_eventtag_at_fcf_scan, 2126 phba->fcoe_eventtag); 2127 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2128 } else { 2129 /* 2130 * Do not continue FCF discovery and clear FCF_TS_INPROG 2131 * flag 2132 */ 2133 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2134 "2833 Stop FCF discovery process due to link " 2135 "state change (x%x)\n", phba->link_state); 2136 spin_lock_irq(&phba->hbalock); 2137 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2138 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2139 spin_unlock_irq(&phba->hbalock); 2140 } 2141 2142 /* Unregister the currently registered FCF if required */ 2143 if (unreg_fcf) { 2144 spin_lock_irq(&phba->hbalock); 2145 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2146 spin_unlock_irq(&phba->hbalock); 2147 lpfc_sli4_unregister_fcf(phba); 2148 } 2149 return 1; 2150 } 2151 2152 /** 2153 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2154 * @phba: pointer to lpfc hba data structure. 2155 * @fcf_cnt: number of eligible fcf record seen so far. 2156 * 2157 * This function makes an running random selection decision on FCF record to 2158 * use through a sequence of @fcf_cnt eligible FCF records with equal 2159 * probability. To perform integer manunipulation of random numbers with 2160 * size unit32_t, a 16-bit random number returned from get_random_u16() is 2161 * taken as the random random number generated. 2162 * 2163 * Returns true when outcome is for the newly read FCF record should be 2164 * chosen; otherwise, return false when outcome is for keeping the previously 2165 * chosen FCF record. 2166 **/ 2167 static bool 2168 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2169 { 2170 uint32_t rand_num; 2171 2172 /* Get 16-bit uniform random number */ 2173 rand_num = get_random_u16(); 2174 2175 /* Decision with probability 1/fcf_cnt */ 2176 if ((fcf_cnt * rand_num) < 0xFFFF) 2177 return true; 2178 else 2179 return false; 2180 } 2181 2182 /** 2183 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2184 * @phba: pointer to lpfc hba data structure. 2185 * @mboxq: pointer to mailbox object. 2186 * @next_fcf_index: pointer to holder of next fcf index. 2187 * 2188 * This routine parses the non-embedded fcf mailbox command by performing the 2189 * necessarily error checking, non-embedded read FCF record mailbox command 2190 * SGE parsing, and endianness swapping. 2191 * 2192 * Returns the pointer to the new FCF record in the non-embedded mailbox 2193 * command DMA memory if successfully, other NULL. 2194 */ 2195 static struct fcf_record * 2196 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2197 uint16_t *next_fcf_index) 2198 { 2199 void *virt_addr; 2200 struct lpfc_mbx_sge sge; 2201 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2202 uint32_t shdr_status, shdr_add_status, if_type; 2203 union lpfc_sli4_cfg_shdr *shdr; 2204 struct fcf_record *new_fcf_record; 2205 2206 /* Get the first SGE entry from the non-embedded DMA memory. This 2207 * routine only uses a single SGE. 2208 */ 2209 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2210 if (unlikely(!mboxq->sge_array)) { 2211 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2212 "2524 Failed to get the non-embedded SGE " 2213 "virtual address\n"); 2214 return NULL; 2215 } 2216 virt_addr = mboxq->sge_array->addr[0]; 2217 2218 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2219 lpfc_sli_pcimem_bcopy(shdr, shdr, 2220 sizeof(union lpfc_sli4_cfg_shdr)); 2221 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2222 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2223 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2224 if (shdr_status || shdr_add_status) { 2225 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2226 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2227 lpfc_printf_log(phba, KERN_ERR, 2228 LOG_TRACE_EVENT, 2229 "2726 READ_FCF_RECORD Indicates empty " 2230 "FCF table.\n"); 2231 else 2232 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2233 "2521 READ_FCF_RECORD mailbox failed " 2234 "with status x%x add_status x%x, " 2235 "mbx\n", shdr_status, shdr_add_status); 2236 return NULL; 2237 } 2238 2239 /* Interpreting the returned information of the FCF record */ 2240 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2241 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2242 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2243 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2244 new_fcf_record = (struct fcf_record *)(virt_addr + 2245 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2246 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2247 offsetof(struct fcf_record, vlan_bitmap)); 2248 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2249 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2250 2251 return new_fcf_record; 2252 } 2253 2254 /** 2255 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2256 * @phba: pointer to lpfc hba data structure. 2257 * @fcf_record: pointer to the fcf record. 2258 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2259 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2260 * 2261 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2262 * enabled. 2263 **/ 2264 static void 2265 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2266 struct fcf_record *fcf_record, 2267 uint16_t vlan_id, 2268 uint16_t next_fcf_index) 2269 { 2270 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2271 "2764 READ_FCF_RECORD:\n" 2272 "\tFCF_Index : x%x\n" 2273 "\tFCF_Avail : x%x\n" 2274 "\tFCF_Valid : x%x\n" 2275 "\tFCF_SOL : x%x\n" 2276 "\tFIP_Priority : x%x\n" 2277 "\tMAC_Provider : x%x\n" 2278 "\tLowest VLANID : x%x\n" 2279 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2280 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2281 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2282 "\tNext_FCF_Index: x%x\n", 2283 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2284 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2285 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2286 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2287 fcf_record->fip_priority, 2288 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2289 vlan_id, 2290 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2291 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2292 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2293 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2294 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2295 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2296 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2297 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2298 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2299 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2300 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2301 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2302 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2303 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2304 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2305 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2306 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2307 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2308 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2309 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2310 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2311 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2312 next_fcf_index); 2313 } 2314 2315 /** 2316 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2317 * @phba: pointer to lpfc hba data structure. 2318 * @fcf_rec: pointer to an existing FCF record. 2319 * @new_fcf_record: pointer to a new FCF record. 2320 * @new_vlan_id: vlan id from the new FCF record. 2321 * 2322 * This function performs matching test of a new FCF record against an existing 2323 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2324 * will not be used as part of the FCF record matching criteria. 2325 * 2326 * Returns true if all the fields matching, otherwise returns false. 2327 */ 2328 static bool 2329 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2330 struct lpfc_fcf_rec *fcf_rec, 2331 struct fcf_record *new_fcf_record, 2332 uint16_t new_vlan_id) 2333 { 2334 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2335 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2336 return false; 2337 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2338 return false; 2339 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2340 return false; 2341 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2342 return false; 2343 if (fcf_rec->priority != new_fcf_record->fip_priority) 2344 return false; 2345 return true; 2346 } 2347 2348 /** 2349 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2350 * @vport: Pointer to vport object. 2351 * @fcf_index: index to next fcf. 2352 * 2353 * This function processing the roundrobin fcf failover to next fcf index. 2354 * When this function is invoked, there will be a current fcf registered 2355 * for flogi. 2356 * Return: 0 for continue retrying flogi on currently registered fcf; 2357 * 1 for stop flogi on currently registered fcf; 2358 */ 2359 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2360 { 2361 struct lpfc_hba *phba = vport->phba; 2362 int rc; 2363 2364 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2365 spin_lock_irq(&phba->hbalock); 2366 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2367 spin_unlock_irq(&phba->hbalock); 2368 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2369 "2872 Devloss tmo with no eligible " 2370 "FCF, unregister in-use FCF (x%x) " 2371 "and rescan FCF table\n", 2372 phba->fcf.current_rec.fcf_indx); 2373 lpfc_unregister_fcf_rescan(phba); 2374 goto stop_flogi_current_fcf; 2375 } 2376 /* Mark the end to FLOGI roundrobin failover */ 2377 phba->hba_flag &= ~FCF_RR_INPROG; 2378 /* Allow action to new fcf asynchronous event */ 2379 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2380 spin_unlock_irq(&phba->hbalock); 2381 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2382 "2865 No FCF available, stop roundrobin FCF " 2383 "failover and change port state:x%x/x%x\n", 2384 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2385 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2386 2387 if (!phba->fcf.fcf_redisc_attempted) { 2388 lpfc_unregister_fcf(phba); 2389 2390 rc = lpfc_sli4_redisc_fcf_table(phba); 2391 if (!rc) { 2392 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2393 "3195 Rediscover FCF table\n"); 2394 phba->fcf.fcf_redisc_attempted = 1; 2395 lpfc_sli4_clear_fcf_rr_bmask(phba); 2396 } else { 2397 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2398 "3196 Rediscover FCF table " 2399 "failed. Status:x%x\n", rc); 2400 } 2401 } else { 2402 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2403 "3197 Already rediscover FCF table " 2404 "attempted. No more retry\n"); 2405 } 2406 goto stop_flogi_current_fcf; 2407 } else { 2408 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2409 "2794 Try FLOGI roundrobin FCF failover to " 2410 "(x%x)\n", fcf_index); 2411 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2412 if (rc) 2413 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2414 "2761 FLOGI roundrobin FCF failover " 2415 "failed (rc:x%x) to read FCF (x%x)\n", 2416 rc, phba->fcf.current_rec.fcf_indx); 2417 else 2418 goto stop_flogi_current_fcf; 2419 } 2420 return 0; 2421 2422 stop_flogi_current_fcf: 2423 lpfc_can_disctmo(vport); 2424 return 1; 2425 } 2426 2427 /** 2428 * lpfc_sli4_fcf_pri_list_del 2429 * @phba: pointer to lpfc hba data structure. 2430 * @fcf_index: the index of the fcf record to delete 2431 * This routine checks the on list flag of the fcf_index to be deleted. 2432 * If it is one the list then it is removed from the list, and the flag 2433 * is cleared. This routine grab the hbalock before removing the fcf 2434 * record from the list. 2435 **/ 2436 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2437 uint16_t fcf_index) 2438 { 2439 struct lpfc_fcf_pri *new_fcf_pri; 2440 2441 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2442 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2443 "3058 deleting idx x%x pri x%x flg x%x\n", 2444 fcf_index, new_fcf_pri->fcf_rec.priority, 2445 new_fcf_pri->fcf_rec.flag); 2446 spin_lock_irq(&phba->hbalock); 2447 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2448 if (phba->fcf.current_rec.priority == 2449 new_fcf_pri->fcf_rec.priority) 2450 phba->fcf.eligible_fcf_cnt--; 2451 list_del_init(&new_fcf_pri->list); 2452 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2453 } 2454 spin_unlock_irq(&phba->hbalock); 2455 } 2456 2457 /** 2458 * lpfc_sli4_set_fcf_flogi_fail 2459 * @phba: pointer to lpfc hba data structure. 2460 * @fcf_index: the index of the fcf record to update 2461 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2462 * flag so the round robin selection for the particular priority level 2463 * will try a different fcf record that does not have this bit set. 2464 * If the fcf record is re-read for any reason this flag is cleared brfore 2465 * adding it to the priority list. 2466 **/ 2467 void 2468 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2469 { 2470 struct lpfc_fcf_pri *new_fcf_pri; 2471 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2472 spin_lock_irq(&phba->hbalock); 2473 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2474 spin_unlock_irq(&phba->hbalock); 2475 } 2476 2477 /** 2478 * lpfc_sli4_fcf_pri_list_add 2479 * @phba: pointer to lpfc hba data structure. 2480 * @fcf_index: the index of the fcf record to add 2481 * @new_fcf_record: pointer to a new FCF record. 2482 * This routine checks the priority of the fcf_index to be added. 2483 * If it is a lower priority than the current head of the fcf_pri list 2484 * then it is added to the list in the right order. 2485 * If it is the same priority as the current head of the list then it 2486 * is added to the head of the list and its bit in the rr_bmask is set. 2487 * If the fcf_index to be added is of a higher priority than the current 2488 * head of the list then the rr_bmask is cleared, its bit is set in the 2489 * rr_bmask and it is added to the head of the list. 2490 * returns: 2491 * 0=success 1=failure 2492 **/ 2493 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2494 uint16_t fcf_index, 2495 struct fcf_record *new_fcf_record) 2496 { 2497 uint16_t current_fcf_pri; 2498 uint16_t last_index; 2499 struct lpfc_fcf_pri *fcf_pri; 2500 struct lpfc_fcf_pri *next_fcf_pri; 2501 struct lpfc_fcf_pri *new_fcf_pri; 2502 int ret; 2503 2504 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2505 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2506 "3059 adding idx x%x pri x%x flg x%x\n", 2507 fcf_index, new_fcf_record->fip_priority, 2508 new_fcf_pri->fcf_rec.flag); 2509 spin_lock_irq(&phba->hbalock); 2510 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2511 list_del_init(&new_fcf_pri->list); 2512 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2513 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2514 if (list_empty(&phba->fcf.fcf_pri_list)) { 2515 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2516 ret = lpfc_sli4_fcf_rr_index_set(phba, 2517 new_fcf_pri->fcf_rec.fcf_index); 2518 goto out; 2519 } 2520 2521 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2522 LPFC_SLI4_FCF_TBL_INDX_MAX); 2523 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2524 ret = 0; /* Empty rr list */ 2525 goto out; 2526 } 2527 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2528 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2529 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2530 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2531 memset(phba->fcf.fcf_rr_bmask, 0, 2532 sizeof(*phba->fcf.fcf_rr_bmask)); 2533 /* fcfs_at_this_priority_level = 1; */ 2534 phba->fcf.eligible_fcf_cnt = 1; 2535 } else 2536 /* fcfs_at_this_priority_level++; */ 2537 phba->fcf.eligible_fcf_cnt++; 2538 ret = lpfc_sli4_fcf_rr_index_set(phba, 2539 new_fcf_pri->fcf_rec.fcf_index); 2540 goto out; 2541 } 2542 2543 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2544 &phba->fcf.fcf_pri_list, list) { 2545 if (new_fcf_pri->fcf_rec.priority <= 2546 fcf_pri->fcf_rec.priority) { 2547 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2548 list_add(&new_fcf_pri->list, 2549 &phba->fcf.fcf_pri_list); 2550 else 2551 list_add(&new_fcf_pri->list, 2552 &((struct lpfc_fcf_pri *) 2553 fcf_pri->list.prev)->list); 2554 ret = 0; 2555 goto out; 2556 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2557 || new_fcf_pri->fcf_rec.priority < 2558 next_fcf_pri->fcf_rec.priority) { 2559 list_add(&new_fcf_pri->list, &fcf_pri->list); 2560 ret = 0; 2561 goto out; 2562 } 2563 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2564 continue; 2565 2566 } 2567 ret = 1; 2568 out: 2569 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2570 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2571 spin_unlock_irq(&phba->hbalock); 2572 return ret; 2573 } 2574 2575 /** 2576 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2577 * @phba: pointer to lpfc hba data structure. 2578 * @mboxq: pointer to mailbox object. 2579 * 2580 * This function iterates through all the fcf records available in 2581 * HBA and chooses the optimal FCF record for discovery. After finding 2582 * the FCF for discovery it registers the FCF record and kicks start 2583 * discovery. 2584 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2585 * use an FCF record which matches fabric name and mac address of the 2586 * currently used FCF record. 2587 * If the driver supports only one FCF, it will try to use the FCF record 2588 * used by BOOT_BIOS. 2589 */ 2590 void 2591 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2592 { 2593 struct fcf_record *new_fcf_record; 2594 uint32_t boot_flag, addr_mode; 2595 uint16_t fcf_index, next_fcf_index; 2596 struct lpfc_fcf_rec *fcf_rec = NULL; 2597 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2598 bool select_new_fcf; 2599 int rc; 2600 2601 /* If there is pending FCoE event restart FCF table scan */ 2602 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2603 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2604 return; 2605 } 2606 2607 /* Parse the FCF record from the non-embedded mailbox command */ 2608 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2609 &next_fcf_index); 2610 if (!new_fcf_record) { 2611 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2612 "2765 Mailbox command READ_FCF_RECORD " 2613 "failed to retrieve a FCF record.\n"); 2614 /* Let next new FCF event trigger fast failover */ 2615 spin_lock_irq(&phba->hbalock); 2616 phba->hba_flag &= ~FCF_TS_INPROG; 2617 spin_unlock_irq(&phba->hbalock); 2618 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2619 return; 2620 } 2621 2622 /* Check the FCF record against the connection list */ 2623 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2624 &addr_mode, &vlan_id); 2625 2626 /* Log the FCF record information if turned on */ 2627 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2628 next_fcf_index); 2629 2630 /* 2631 * If the fcf record does not match with connect list entries 2632 * read the next entry; otherwise, this is an eligible FCF 2633 * record for roundrobin FCF failover. 2634 */ 2635 if (!rc) { 2636 lpfc_sli4_fcf_pri_list_del(phba, 2637 bf_get(lpfc_fcf_record_fcf_index, 2638 new_fcf_record)); 2639 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2640 "2781 FCF (x%x) failed connection " 2641 "list check: (x%x/x%x/%x)\n", 2642 bf_get(lpfc_fcf_record_fcf_index, 2643 new_fcf_record), 2644 bf_get(lpfc_fcf_record_fcf_avail, 2645 new_fcf_record), 2646 bf_get(lpfc_fcf_record_fcf_valid, 2647 new_fcf_record), 2648 bf_get(lpfc_fcf_record_fcf_sol, 2649 new_fcf_record)); 2650 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2651 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2652 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2653 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2654 phba->fcf.current_rec.fcf_indx) { 2655 lpfc_printf_log(phba, KERN_ERR, 2656 LOG_TRACE_EVENT, 2657 "2862 FCF (x%x) matches property " 2658 "of in-use FCF (x%x)\n", 2659 bf_get(lpfc_fcf_record_fcf_index, 2660 new_fcf_record), 2661 phba->fcf.current_rec.fcf_indx); 2662 goto read_next_fcf; 2663 } 2664 /* 2665 * In case the current in-use FCF record becomes 2666 * invalid/unavailable during FCF discovery that 2667 * was not triggered by fast FCF failover process, 2668 * treat it as fast FCF failover. 2669 */ 2670 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2671 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2672 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2673 "2835 Invalid in-use FCF " 2674 "(x%x), enter FCF failover " 2675 "table scan.\n", 2676 phba->fcf.current_rec.fcf_indx); 2677 spin_lock_irq(&phba->hbalock); 2678 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2679 spin_unlock_irq(&phba->hbalock); 2680 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2681 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2682 LPFC_FCOE_FCF_GET_FIRST); 2683 return; 2684 } 2685 } 2686 goto read_next_fcf; 2687 } else { 2688 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2689 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2690 new_fcf_record); 2691 if (rc) 2692 goto read_next_fcf; 2693 } 2694 2695 /* 2696 * If this is not the first FCF discovery of the HBA, use last 2697 * FCF record for the discovery. The condition that a rescan 2698 * matches the in-use FCF record: fabric name, switch name, mac 2699 * address, and vlan_id. 2700 */ 2701 spin_lock_irq(&phba->hbalock); 2702 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2703 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2704 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2705 new_fcf_record, vlan_id)) { 2706 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2707 phba->fcf.current_rec.fcf_indx) { 2708 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2709 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2710 /* Stop FCF redisc wait timer */ 2711 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2712 phba); 2713 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2714 /* Fast failover, mark completed */ 2715 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2716 spin_unlock_irq(&phba->hbalock); 2717 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2718 "2836 New FCF matches in-use " 2719 "FCF (x%x), port_state:x%x, " 2720 "fc_flag:x%x\n", 2721 phba->fcf.current_rec.fcf_indx, 2722 phba->pport->port_state, 2723 phba->pport->fc_flag); 2724 goto out; 2725 } else 2726 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2727 "2863 New FCF (x%x) matches " 2728 "property of in-use FCF (x%x)\n", 2729 bf_get(lpfc_fcf_record_fcf_index, 2730 new_fcf_record), 2731 phba->fcf.current_rec.fcf_indx); 2732 } 2733 /* 2734 * Read next FCF record from HBA searching for the matching 2735 * with in-use record only if not during the fast failover 2736 * period. In case of fast failover period, it shall try to 2737 * determine whether the FCF record just read should be the 2738 * next candidate. 2739 */ 2740 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2741 spin_unlock_irq(&phba->hbalock); 2742 goto read_next_fcf; 2743 } 2744 } 2745 /* 2746 * Update on failover FCF record only if it's in FCF fast-failover 2747 * period; otherwise, update on current FCF record. 2748 */ 2749 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2750 fcf_rec = &phba->fcf.failover_rec; 2751 else 2752 fcf_rec = &phba->fcf.current_rec; 2753 2754 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2755 /* 2756 * If the driver FCF record does not have boot flag 2757 * set and new hba fcf record has boot flag set, use 2758 * the new hba fcf record. 2759 */ 2760 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2761 /* Choose this FCF record */ 2762 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2763 "2837 Update current FCF record " 2764 "(x%x) with new FCF record (x%x)\n", 2765 fcf_rec->fcf_indx, 2766 bf_get(lpfc_fcf_record_fcf_index, 2767 new_fcf_record)); 2768 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2769 addr_mode, vlan_id, BOOT_ENABLE); 2770 spin_unlock_irq(&phba->hbalock); 2771 goto read_next_fcf; 2772 } 2773 /* 2774 * If the driver FCF record has boot flag set and the 2775 * new hba FCF record does not have boot flag, read 2776 * the next FCF record. 2777 */ 2778 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2779 spin_unlock_irq(&phba->hbalock); 2780 goto read_next_fcf; 2781 } 2782 /* 2783 * If the new hba FCF record has lower priority value 2784 * than the driver FCF record, use the new record. 2785 */ 2786 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2787 /* Choose the new FCF record with lower priority */ 2788 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2789 "2838 Update current FCF record " 2790 "(x%x) with new FCF record (x%x)\n", 2791 fcf_rec->fcf_indx, 2792 bf_get(lpfc_fcf_record_fcf_index, 2793 new_fcf_record)); 2794 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2795 addr_mode, vlan_id, 0); 2796 /* Reset running random FCF selection count */ 2797 phba->fcf.eligible_fcf_cnt = 1; 2798 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2799 /* Update running random FCF selection count */ 2800 phba->fcf.eligible_fcf_cnt++; 2801 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2802 phba->fcf.eligible_fcf_cnt); 2803 if (select_new_fcf) { 2804 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2805 "2839 Update current FCF record " 2806 "(x%x) with new FCF record (x%x)\n", 2807 fcf_rec->fcf_indx, 2808 bf_get(lpfc_fcf_record_fcf_index, 2809 new_fcf_record)); 2810 /* Choose the new FCF by random selection */ 2811 __lpfc_update_fcf_record(phba, fcf_rec, 2812 new_fcf_record, 2813 addr_mode, vlan_id, 0); 2814 } 2815 } 2816 spin_unlock_irq(&phba->hbalock); 2817 goto read_next_fcf; 2818 } 2819 /* 2820 * This is the first suitable FCF record, choose this record for 2821 * initial best-fit FCF. 2822 */ 2823 if (fcf_rec) { 2824 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2825 "2840 Update initial FCF candidate " 2826 "with FCF (x%x)\n", 2827 bf_get(lpfc_fcf_record_fcf_index, 2828 new_fcf_record)); 2829 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2830 addr_mode, vlan_id, (boot_flag ? 2831 BOOT_ENABLE : 0)); 2832 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2833 /* Setup initial running random FCF selection count */ 2834 phba->fcf.eligible_fcf_cnt = 1; 2835 } 2836 spin_unlock_irq(&phba->hbalock); 2837 goto read_next_fcf; 2838 2839 read_next_fcf: 2840 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2841 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2842 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2843 /* 2844 * Case of FCF fast failover scan 2845 */ 2846 2847 /* 2848 * It has not found any suitable FCF record, cancel 2849 * FCF scan inprogress, and do nothing 2850 */ 2851 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2852 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2853 "2782 No suitable FCF found: " 2854 "(x%x/x%x)\n", 2855 phba->fcoe_eventtag_at_fcf_scan, 2856 bf_get(lpfc_fcf_record_fcf_index, 2857 new_fcf_record)); 2858 spin_lock_irq(&phba->hbalock); 2859 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2860 phba->hba_flag &= ~FCF_TS_INPROG; 2861 spin_unlock_irq(&phba->hbalock); 2862 /* Unregister in-use FCF and rescan */ 2863 lpfc_printf_log(phba, KERN_INFO, 2864 LOG_FIP, 2865 "2864 On devloss tmo " 2866 "unreg in-use FCF and " 2867 "rescan FCF table\n"); 2868 lpfc_unregister_fcf_rescan(phba); 2869 return; 2870 } 2871 /* 2872 * Let next new FCF event trigger fast failover 2873 */ 2874 phba->hba_flag &= ~FCF_TS_INPROG; 2875 spin_unlock_irq(&phba->hbalock); 2876 return; 2877 } 2878 /* 2879 * It has found a suitable FCF record that is not 2880 * the same as in-use FCF record, unregister the 2881 * in-use FCF record, replace the in-use FCF record 2882 * with the new FCF record, mark FCF fast failover 2883 * completed, and then start register the new FCF 2884 * record. 2885 */ 2886 2887 /* Unregister the current in-use FCF record */ 2888 lpfc_unregister_fcf(phba); 2889 2890 /* Replace in-use record with the new record */ 2891 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2892 "2842 Replace in-use FCF (x%x) " 2893 "with failover FCF (x%x)\n", 2894 phba->fcf.current_rec.fcf_indx, 2895 phba->fcf.failover_rec.fcf_indx); 2896 memcpy(&phba->fcf.current_rec, 2897 &phba->fcf.failover_rec, 2898 sizeof(struct lpfc_fcf_rec)); 2899 /* 2900 * Mark the fast FCF failover rediscovery completed 2901 * and the start of the first round of the roundrobin 2902 * FCF failover. 2903 */ 2904 spin_lock_irq(&phba->hbalock); 2905 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2906 spin_unlock_irq(&phba->hbalock); 2907 /* Register to the new FCF record */ 2908 lpfc_register_fcf(phba); 2909 } else { 2910 /* 2911 * In case of transaction period to fast FCF failover, 2912 * do nothing when search to the end of the FCF table. 2913 */ 2914 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2915 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2916 return; 2917 2918 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2919 phba->fcf.fcf_flag & FCF_IN_USE) { 2920 /* 2921 * In case the current in-use FCF record no 2922 * longer existed during FCF discovery that 2923 * was not triggered by fast FCF failover 2924 * process, treat it as fast FCF failover. 2925 */ 2926 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2927 "2841 In-use FCF record (x%x) " 2928 "not reported, entering fast " 2929 "FCF failover mode scanning.\n", 2930 phba->fcf.current_rec.fcf_indx); 2931 spin_lock_irq(&phba->hbalock); 2932 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2933 spin_unlock_irq(&phba->hbalock); 2934 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2935 LPFC_FCOE_FCF_GET_FIRST); 2936 return; 2937 } 2938 /* Register to the new FCF record */ 2939 lpfc_register_fcf(phba); 2940 } 2941 } else 2942 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2943 return; 2944 2945 out: 2946 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2947 lpfc_register_fcf(phba); 2948 2949 return; 2950 } 2951 2952 /** 2953 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2954 * @phba: pointer to lpfc hba data structure. 2955 * @mboxq: pointer to mailbox object. 2956 * 2957 * This is the callback function for FLOGI failure roundrobin FCF failover 2958 * read FCF record mailbox command from the eligible FCF record bmask for 2959 * performing the failover. If the FCF read back is not valid/available, it 2960 * fails through to retrying FLOGI to the currently registered FCF again. 2961 * Otherwise, if the FCF read back is valid and available, it will set the 2962 * newly read FCF record to the failover FCF record, unregister currently 2963 * registered FCF record, copy the failover FCF record to the current 2964 * FCF record, and then register the current FCF record before proceeding 2965 * to trying FLOGI on the new failover FCF. 2966 */ 2967 void 2968 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2969 { 2970 struct fcf_record *new_fcf_record; 2971 uint32_t boot_flag, addr_mode; 2972 uint16_t next_fcf_index, fcf_index; 2973 uint16_t current_fcf_index; 2974 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2975 int rc; 2976 2977 /* If link state is not up, stop the roundrobin failover process */ 2978 if (phba->link_state < LPFC_LINK_UP) { 2979 spin_lock_irq(&phba->hbalock); 2980 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2981 phba->hba_flag &= ~FCF_RR_INPROG; 2982 spin_unlock_irq(&phba->hbalock); 2983 goto out; 2984 } 2985 2986 /* Parse the FCF record from the non-embedded mailbox command */ 2987 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2988 &next_fcf_index); 2989 if (!new_fcf_record) { 2990 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2991 "2766 Mailbox command READ_FCF_RECORD " 2992 "failed to retrieve a FCF record. " 2993 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 2994 phba->fcf.fcf_flag); 2995 lpfc_unregister_fcf_rescan(phba); 2996 goto out; 2997 } 2998 2999 /* Get the needed parameters from FCF record */ 3000 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3001 &addr_mode, &vlan_id); 3002 3003 /* Log the FCF record information if turned on */ 3004 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3005 next_fcf_index); 3006 3007 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3008 if (!rc) { 3009 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3010 "2848 Remove ineligible FCF (x%x) from " 3011 "from roundrobin bmask\n", fcf_index); 3012 /* Clear roundrobin bmask bit for ineligible FCF */ 3013 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3014 /* Perform next round of roundrobin FCF failover */ 3015 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3016 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3017 if (rc) 3018 goto out; 3019 goto error_out; 3020 } 3021 3022 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3023 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3024 "2760 Perform FLOGI roundrobin FCF failover: " 3025 "FCF (x%x) back to FCF (x%x)\n", 3026 phba->fcf.current_rec.fcf_indx, fcf_index); 3027 /* Wait 500 ms before retrying FLOGI to current FCF */ 3028 msleep(500); 3029 lpfc_issue_init_vfi(phba->pport); 3030 goto out; 3031 } 3032 3033 /* Upload new FCF record to the failover FCF record */ 3034 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3035 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3036 phba->fcf.failover_rec.fcf_indx, fcf_index); 3037 spin_lock_irq(&phba->hbalock); 3038 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3039 new_fcf_record, addr_mode, vlan_id, 3040 (boot_flag ? BOOT_ENABLE : 0)); 3041 spin_unlock_irq(&phba->hbalock); 3042 3043 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3044 3045 /* Unregister the current in-use FCF record */ 3046 lpfc_unregister_fcf(phba); 3047 3048 /* Replace in-use record with the new record */ 3049 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3050 sizeof(struct lpfc_fcf_rec)); 3051 3052 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3053 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3054 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3055 3056 error_out: 3057 lpfc_register_fcf(phba); 3058 out: 3059 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3060 } 3061 3062 /** 3063 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3064 * @phba: pointer to lpfc hba data structure. 3065 * @mboxq: pointer to mailbox object. 3066 * 3067 * This is the callback function of read FCF record mailbox command for 3068 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3069 * failover when a new FCF event happened. If the FCF read back is 3070 * valid/available and it passes the connection list check, it updates 3071 * the bmask for the eligible FCF record for roundrobin failover. 3072 */ 3073 void 3074 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3075 { 3076 struct fcf_record *new_fcf_record; 3077 uint32_t boot_flag, addr_mode; 3078 uint16_t fcf_index, next_fcf_index; 3079 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3080 int rc; 3081 3082 /* If link state is not up, no need to proceed */ 3083 if (phba->link_state < LPFC_LINK_UP) 3084 goto out; 3085 3086 /* If FCF discovery period is over, no need to proceed */ 3087 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3088 goto out; 3089 3090 /* Parse the FCF record from the non-embedded mailbox command */ 3091 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3092 &next_fcf_index); 3093 if (!new_fcf_record) { 3094 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3095 "2767 Mailbox command READ_FCF_RECORD " 3096 "failed to retrieve a FCF record.\n"); 3097 goto out; 3098 } 3099 3100 /* Check the connection list for eligibility */ 3101 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3102 &addr_mode, &vlan_id); 3103 3104 /* Log the FCF record information if turned on */ 3105 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3106 next_fcf_index); 3107 3108 if (!rc) 3109 goto out; 3110 3111 /* Update the eligible FCF record index bmask */ 3112 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3113 3114 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3115 3116 out: 3117 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3118 } 3119 3120 /** 3121 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3122 * @phba: pointer to lpfc hba data structure. 3123 * @mboxq: pointer to mailbox data structure. 3124 * 3125 * This function handles completion of init vfi mailbox command. 3126 */ 3127 static void 3128 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3129 { 3130 struct lpfc_vport *vport = mboxq->vport; 3131 3132 /* 3133 * VFI not supported on interface type 0, just do the flogi 3134 * Also continue if the VFI is in use - just use the same one. 3135 */ 3136 if (mboxq->u.mb.mbxStatus && 3137 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3138 LPFC_SLI_INTF_IF_TYPE_0) && 3139 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3140 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3141 "2891 Init VFI mailbox failed 0x%x\n", 3142 mboxq->u.mb.mbxStatus); 3143 mempool_free(mboxq, phba->mbox_mem_pool); 3144 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3145 return; 3146 } 3147 3148 lpfc_initial_flogi(vport); 3149 mempool_free(mboxq, phba->mbox_mem_pool); 3150 return; 3151 } 3152 3153 /** 3154 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3155 * @vport: pointer to lpfc_vport data structure. 3156 * 3157 * This function issue a init_vfi mailbox command to initialize the VFI and 3158 * VPI for the physical port. 3159 */ 3160 void 3161 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3162 { 3163 LPFC_MBOXQ_t *mboxq; 3164 int rc; 3165 struct lpfc_hba *phba = vport->phba; 3166 3167 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3168 if (!mboxq) { 3169 lpfc_printf_vlog(vport, KERN_ERR, 3170 LOG_TRACE_EVENT, "2892 Failed to allocate " 3171 "init_vfi mailbox\n"); 3172 return; 3173 } 3174 lpfc_init_vfi(mboxq, vport); 3175 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3176 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3177 if (rc == MBX_NOT_FINISHED) { 3178 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3179 "2893 Failed to issue init_vfi mailbox\n"); 3180 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3181 } 3182 } 3183 3184 /** 3185 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3186 * @phba: pointer to lpfc hba data structure. 3187 * @mboxq: pointer to mailbox data structure. 3188 * 3189 * This function handles completion of init vpi mailbox command. 3190 */ 3191 void 3192 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3193 { 3194 struct lpfc_vport *vport = mboxq->vport; 3195 struct lpfc_nodelist *ndlp; 3196 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3197 3198 if (mboxq->u.mb.mbxStatus) { 3199 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3200 "2609 Init VPI mailbox failed 0x%x\n", 3201 mboxq->u.mb.mbxStatus); 3202 mempool_free(mboxq, phba->mbox_mem_pool); 3203 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3204 return; 3205 } 3206 spin_lock_irq(shost->host_lock); 3207 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3208 spin_unlock_irq(shost->host_lock); 3209 3210 /* If this port is physical port or FDISC is done, do reg_vpi */ 3211 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3212 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3213 if (!ndlp) 3214 lpfc_printf_vlog(vport, KERN_ERR, 3215 LOG_TRACE_EVENT, 3216 "2731 Cannot find fabric " 3217 "controller node\n"); 3218 else 3219 lpfc_register_new_vport(phba, vport, ndlp); 3220 mempool_free(mboxq, phba->mbox_mem_pool); 3221 return; 3222 } 3223 3224 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3225 lpfc_initial_fdisc(vport); 3226 else { 3227 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3228 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3229 "2606 No NPIV Fabric support\n"); 3230 } 3231 mempool_free(mboxq, phba->mbox_mem_pool); 3232 return; 3233 } 3234 3235 /** 3236 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3237 * @vport: pointer to lpfc_vport data structure. 3238 * 3239 * This function issue a init_vpi mailbox command to initialize 3240 * VPI for the vport. 3241 */ 3242 void 3243 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3244 { 3245 LPFC_MBOXQ_t *mboxq; 3246 int rc, vpi; 3247 3248 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3249 vpi = lpfc_alloc_vpi(vport->phba); 3250 if (!vpi) { 3251 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3252 "3303 Failed to obtain vport vpi\n"); 3253 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3254 return; 3255 } 3256 vport->vpi = vpi; 3257 } 3258 3259 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3260 if (!mboxq) { 3261 lpfc_printf_vlog(vport, KERN_ERR, 3262 LOG_TRACE_EVENT, "2607 Failed to allocate " 3263 "init_vpi mailbox\n"); 3264 return; 3265 } 3266 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3267 mboxq->vport = vport; 3268 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3269 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3270 if (rc == MBX_NOT_FINISHED) { 3271 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3272 "2608 Failed to issue init_vpi mailbox\n"); 3273 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3274 } 3275 } 3276 3277 /** 3278 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3279 * @phba: pointer to lpfc hba data structure. 3280 * 3281 * This function loops through the list of vports on the @phba and issues an 3282 * FDISC if possible. 3283 */ 3284 void 3285 lpfc_start_fdiscs(struct lpfc_hba *phba) 3286 { 3287 struct lpfc_vport **vports; 3288 int i; 3289 3290 vports = lpfc_create_vport_work_array(phba); 3291 if (vports != NULL) { 3292 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3293 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3294 continue; 3295 /* There are no vpi for this vport */ 3296 if (vports[i]->vpi > phba->max_vpi) { 3297 lpfc_vport_set_state(vports[i], 3298 FC_VPORT_FAILED); 3299 continue; 3300 } 3301 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3302 lpfc_vport_set_state(vports[i], 3303 FC_VPORT_LINKDOWN); 3304 continue; 3305 } 3306 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 3307 lpfc_issue_init_vpi(vports[i]); 3308 continue; 3309 } 3310 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3311 lpfc_initial_fdisc(vports[i]); 3312 else { 3313 lpfc_vport_set_state(vports[i], 3314 FC_VPORT_NO_FABRIC_SUPP); 3315 lpfc_printf_vlog(vports[i], KERN_ERR, 3316 LOG_TRACE_EVENT, 3317 "0259 No NPIV " 3318 "Fabric support\n"); 3319 } 3320 } 3321 } 3322 lpfc_destroy_vport_work_array(phba, vports); 3323 } 3324 3325 void 3326 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3327 { 3328 struct lpfc_vport *vport = mboxq->vport; 3329 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3330 3331 /* 3332 * VFI not supported for interface type 0, so ignore any mailbox 3333 * error (except VFI in use) and continue with the discovery. 3334 */ 3335 if (mboxq->u.mb.mbxStatus && 3336 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3337 LPFC_SLI_INTF_IF_TYPE_0) && 3338 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3339 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3340 "2018 REG_VFI mbxStatus error x%x " 3341 "HBA state x%x\n", 3342 mboxq->u.mb.mbxStatus, vport->port_state); 3343 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3344 /* FLOGI failed, use loop map to make discovery list */ 3345 lpfc_disc_list_loopmap(vport); 3346 /* Start discovery */ 3347 lpfc_disc_start(vport); 3348 goto out_free_mem; 3349 } 3350 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3351 goto out_free_mem; 3352 } 3353 3354 /* If the VFI is already registered, there is nothing else to do 3355 * Unless this was a VFI update and we are in PT2PT mode, then 3356 * we should drop through to set the port state to ready. 3357 */ 3358 if (vport->fc_flag & FC_VFI_REGISTERED) 3359 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3360 vport->fc_flag & FC_PT2PT)) 3361 goto out_free_mem; 3362 3363 /* The VPI is implicitly registered when the VFI is registered */ 3364 spin_lock_irq(shost->host_lock); 3365 vport->vpi_state |= LPFC_VPI_REGISTERED; 3366 vport->fc_flag |= FC_VFI_REGISTERED; 3367 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3368 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3369 spin_unlock_irq(shost->host_lock); 3370 3371 /* In case SLI4 FC loopback test, we are ready */ 3372 if ((phba->sli_rev == LPFC_SLI_REV4) && 3373 (phba->link_flag & LS_LOOPBACK_MODE)) { 3374 phba->link_state = LPFC_HBA_READY; 3375 goto out_free_mem; 3376 } 3377 3378 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3379 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 3380 "alpacnt:%d LinkState:%x topology:%x\n", 3381 vport->port_state, vport->fc_flag, vport->fc_myDID, 3382 vport->phba->alpa_map[0], 3383 phba->link_state, phba->fc_topology); 3384 3385 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3386 /* 3387 * For private loop or for NPort pt2pt, 3388 * just start discovery and we are done. 3389 */ 3390 if ((vport->fc_flag & FC_PT2PT) || 3391 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 3392 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 3393 3394 /* Use loop map to make discovery list */ 3395 lpfc_disc_list_loopmap(vport); 3396 /* Start discovery */ 3397 if (vport->fc_flag & FC_PT2PT) 3398 vport->port_state = LPFC_VPORT_READY; 3399 else 3400 lpfc_disc_start(vport); 3401 } else { 3402 lpfc_start_fdiscs(phba); 3403 lpfc_do_scr_ns_plogi(phba, vport); 3404 } 3405 } 3406 3407 out_free_mem: 3408 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3409 } 3410 3411 static void 3412 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3413 { 3414 MAILBOX_t *mb = &pmb->u.mb; 3415 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3416 struct lpfc_vport *vport = pmb->vport; 3417 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3418 struct serv_parm *sp = &vport->fc_sparam; 3419 uint32_t ed_tov; 3420 3421 /* Check for error */ 3422 if (mb->mbxStatus) { 3423 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3424 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3425 "0319 READ_SPARAM mbxStatus error x%x " 3426 "hba state x%x>\n", 3427 mb->mbxStatus, vport->port_state); 3428 lpfc_linkdown(phba); 3429 goto out; 3430 } 3431 3432 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3433 sizeof (struct serv_parm)); 3434 3435 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3436 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3437 ed_tov = (ed_tov + 999999) / 1000000; 3438 3439 phba->fc_edtov = ed_tov; 3440 phba->fc_ratov = (2 * ed_tov) / 1000; 3441 if (phba->fc_ratov < FF_DEF_RATOV) { 3442 /* RA_TOV should be atleast 10sec for initial flogi */ 3443 phba->fc_ratov = FF_DEF_RATOV; 3444 } 3445 3446 lpfc_update_vport_wwn(vport); 3447 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3448 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3449 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3450 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3451 } 3452 3453 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3454 3455 /* Check if sending the FLOGI is being deferred to after we get 3456 * up to date CSPs from MBX_READ_SPARAM. 3457 */ 3458 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3459 lpfc_initial_flogi(vport); 3460 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3461 } 3462 return; 3463 3464 out: 3465 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3466 lpfc_issue_clear_la(phba, vport); 3467 } 3468 3469 static void 3470 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3471 { 3472 struct lpfc_vport *vport = phba->pport; 3473 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3474 struct Scsi_Host *shost; 3475 int i; 3476 int rc; 3477 struct fcf_record *fcf_record; 3478 uint32_t fc_flags = 0; 3479 unsigned long iflags; 3480 3481 spin_lock_irqsave(&phba->hbalock, iflags); 3482 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3483 3484 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3485 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3486 case LPFC_LINK_SPEED_1GHZ: 3487 case LPFC_LINK_SPEED_2GHZ: 3488 case LPFC_LINK_SPEED_4GHZ: 3489 case LPFC_LINK_SPEED_8GHZ: 3490 case LPFC_LINK_SPEED_10GHZ: 3491 case LPFC_LINK_SPEED_16GHZ: 3492 case LPFC_LINK_SPEED_32GHZ: 3493 case LPFC_LINK_SPEED_64GHZ: 3494 case LPFC_LINK_SPEED_128GHZ: 3495 case LPFC_LINK_SPEED_256GHZ: 3496 break; 3497 default: 3498 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3499 break; 3500 } 3501 } 3502 3503 if (phba->fc_topology && 3504 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3505 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3506 "3314 Toplogy changed was 0x%x is 0x%x\n", 3507 phba->fc_topology, 3508 bf_get(lpfc_mbx_read_top_topology, la)); 3509 phba->fc_topology_changed = 1; 3510 } 3511 3512 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3513 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3514 3515 shost = lpfc_shost_from_vport(vport); 3516 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3517 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3518 3519 /* if npiv is enabled and this adapter supports npiv log 3520 * a message that npiv is not supported in this topology 3521 */ 3522 if (phba->cfg_enable_npiv && phba->max_vpi) 3523 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3524 "1309 Link Up Event npiv not supported in loop " 3525 "topology\n"); 3526 /* Get Loop Map information */ 3527 if (bf_get(lpfc_mbx_read_top_il, la)) 3528 fc_flags |= FC_LBIT; 3529 3530 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3531 i = la->lilpBde64.tus.f.bdeSize; 3532 3533 if (i == 0) { 3534 phba->alpa_map[0] = 0; 3535 } else { 3536 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3537 int numalpa, j, k; 3538 union { 3539 uint8_t pamap[16]; 3540 struct { 3541 uint32_t wd1; 3542 uint32_t wd2; 3543 uint32_t wd3; 3544 uint32_t wd4; 3545 } pa; 3546 } un; 3547 numalpa = phba->alpa_map[0]; 3548 j = 0; 3549 while (j < numalpa) { 3550 memset(un.pamap, 0, 16); 3551 for (k = 1; j < numalpa; k++) { 3552 un.pamap[k - 1] = 3553 phba->alpa_map[j + 1]; 3554 j++; 3555 if (k == 16) 3556 break; 3557 } 3558 /* Link Up Event ALPA map */ 3559 lpfc_printf_log(phba, 3560 KERN_WARNING, 3561 LOG_LINK_EVENT, 3562 "1304 Link Up Event " 3563 "ALPA map Data: x%x " 3564 "x%x x%x x%x\n", 3565 un.pa.wd1, un.pa.wd2, 3566 un.pa.wd3, un.pa.wd4); 3567 } 3568 } 3569 } 3570 } else { 3571 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3572 if (phba->max_vpi && phba->cfg_enable_npiv && 3573 (phba->sli_rev >= LPFC_SLI_REV3)) 3574 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3575 } 3576 vport->fc_myDID = phba->fc_pref_DID; 3577 fc_flags |= FC_LBIT; 3578 } 3579 spin_unlock_irqrestore(&phba->hbalock, iflags); 3580 3581 if (fc_flags) { 3582 spin_lock_irqsave(shost->host_lock, iflags); 3583 vport->fc_flag |= fc_flags; 3584 spin_unlock_irqrestore(shost->host_lock, iflags); 3585 } 3586 3587 lpfc_linkup(phba); 3588 sparam_mbox = NULL; 3589 3590 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3591 if (!sparam_mbox) 3592 goto out; 3593 3594 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3595 if (rc) { 3596 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3597 goto out; 3598 } 3599 sparam_mbox->vport = vport; 3600 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3601 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3602 if (rc == MBX_NOT_FINISHED) { 3603 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3604 goto out; 3605 } 3606 3607 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3608 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3609 if (!cfglink_mbox) 3610 goto out; 3611 vport->port_state = LPFC_LOCAL_CFG_LINK; 3612 lpfc_config_link(phba, cfglink_mbox); 3613 cfglink_mbox->vport = vport; 3614 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3615 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3616 if (rc == MBX_NOT_FINISHED) { 3617 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3618 goto out; 3619 } 3620 } else { 3621 vport->port_state = LPFC_VPORT_UNKNOWN; 3622 /* 3623 * Add the driver's default FCF record at FCF index 0 now. This 3624 * is phase 1 implementation that support FCF index 0 and driver 3625 * defaults. 3626 */ 3627 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3628 fcf_record = kzalloc(sizeof(struct fcf_record), 3629 GFP_KERNEL); 3630 if (unlikely(!fcf_record)) { 3631 lpfc_printf_log(phba, KERN_ERR, 3632 LOG_TRACE_EVENT, 3633 "2554 Could not allocate memory for " 3634 "fcf record\n"); 3635 rc = -ENODEV; 3636 goto out; 3637 } 3638 3639 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3640 LPFC_FCOE_FCF_DEF_INDEX); 3641 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3642 if (unlikely(rc)) { 3643 lpfc_printf_log(phba, KERN_ERR, 3644 LOG_TRACE_EVENT, 3645 "2013 Could not manually add FCF " 3646 "record 0, status %d\n", rc); 3647 rc = -ENODEV; 3648 kfree(fcf_record); 3649 goto out; 3650 } 3651 kfree(fcf_record); 3652 } 3653 /* 3654 * The driver is expected to do FIP/FCF. Call the port 3655 * and get the FCF Table. 3656 */ 3657 spin_lock_irqsave(&phba->hbalock, iflags); 3658 if (phba->hba_flag & FCF_TS_INPROG) { 3659 spin_unlock_irqrestore(&phba->hbalock, iflags); 3660 return; 3661 } 3662 /* This is the initial FCF discovery scan */ 3663 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3664 spin_unlock_irqrestore(&phba->hbalock, iflags); 3665 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3666 "2778 Start FCF table scan at linkup\n"); 3667 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3668 LPFC_FCOE_FCF_GET_FIRST); 3669 if (rc) { 3670 spin_lock_irqsave(&phba->hbalock, iflags); 3671 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3672 spin_unlock_irqrestore(&phba->hbalock, iflags); 3673 goto out; 3674 } 3675 /* Reset FCF roundrobin bmask for new discovery */ 3676 lpfc_sli4_clear_fcf_rr_bmask(phba); 3677 } 3678 3679 /* Prepare for LINK up registrations */ 3680 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3681 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3682 init_utsname()->nodename); 3683 return; 3684 out: 3685 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3686 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3687 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3688 vport->port_state, sparam_mbox, cfglink_mbox); 3689 lpfc_issue_clear_la(phba, vport); 3690 return; 3691 } 3692 3693 static void 3694 lpfc_enable_la(struct lpfc_hba *phba) 3695 { 3696 uint32_t control; 3697 struct lpfc_sli *psli = &phba->sli; 3698 spin_lock_irq(&phba->hbalock); 3699 psli->sli_flag |= LPFC_PROCESS_LA; 3700 if (phba->sli_rev <= LPFC_SLI_REV3) { 3701 control = readl(phba->HCregaddr); 3702 control |= HC_LAINT_ENA; 3703 writel(control, phba->HCregaddr); 3704 readl(phba->HCregaddr); /* flush */ 3705 } 3706 spin_unlock_irq(&phba->hbalock); 3707 } 3708 3709 static void 3710 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3711 { 3712 lpfc_linkdown(phba); 3713 lpfc_enable_la(phba); 3714 lpfc_unregister_unused_fcf(phba); 3715 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3716 } 3717 3718 3719 /* 3720 * This routine handles processing a READ_TOPOLOGY mailbox 3721 * command upon completion. It is setup in the LPFC_MBOXQ 3722 * as the completion routine when the command is 3723 * handed off to the SLI layer. SLI4 only. 3724 */ 3725 void 3726 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3727 { 3728 struct lpfc_vport *vport = pmb->vport; 3729 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3730 struct lpfc_mbx_read_top *la; 3731 struct lpfc_sli_ring *pring; 3732 MAILBOX_t *mb = &pmb->u.mb; 3733 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3734 uint8_t attn_type; 3735 unsigned long iflags; 3736 3737 /* Unblock ELS traffic */ 3738 pring = lpfc_phba_elsring(phba); 3739 if (pring) 3740 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3741 3742 /* Check for error */ 3743 if (mb->mbxStatus) { 3744 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3745 "1307 READ_LA mbox error x%x state x%x\n", 3746 mb->mbxStatus, vport->port_state); 3747 lpfc_mbx_issue_link_down(phba); 3748 phba->link_state = LPFC_HBA_ERROR; 3749 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3750 } 3751 3752 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3753 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3754 3755 memcpy(&phba->alpa_map[0], mp->virt, 128); 3756 3757 spin_lock_irqsave(shost->host_lock, iflags); 3758 if (bf_get(lpfc_mbx_read_top_pb, la)) 3759 vport->fc_flag |= FC_BYPASSED_MODE; 3760 else 3761 vport->fc_flag &= ~FC_BYPASSED_MODE; 3762 spin_unlock_irqrestore(shost->host_lock, iflags); 3763 3764 if (phba->fc_eventTag <= la->eventTag) { 3765 phba->fc_stat.LinkMultiEvent++; 3766 if (attn_type == LPFC_ATT_LINK_UP) 3767 if (phba->fc_eventTag != 0) 3768 lpfc_linkdown(phba); 3769 } 3770 3771 phba->fc_eventTag = la->eventTag; 3772 phba->link_events++; 3773 if (attn_type == LPFC_ATT_LINK_UP) { 3774 phba->fc_stat.LinkUp++; 3775 if (phba->link_flag & LS_LOOPBACK_MODE) { 3776 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3777 "1306 Link Up Event in loop back mode " 3778 "x%x received Data: x%x x%x x%x x%x\n", 3779 la->eventTag, phba->fc_eventTag, 3780 bf_get(lpfc_mbx_read_top_alpa_granted, 3781 la), 3782 bf_get(lpfc_mbx_read_top_link_spd, la), 3783 phba->alpa_map[0]); 3784 } else { 3785 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3786 "1303 Link Up Event x%x received " 3787 "Data: x%x x%x x%x x%x x%x\n", 3788 la->eventTag, phba->fc_eventTag, 3789 bf_get(lpfc_mbx_read_top_alpa_granted, 3790 la), 3791 bf_get(lpfc_mbx_read_top_link_spd, la), 3792 phba->alpa_map[0], 3793 bf_get(lpfc_mbx_read_top_fa, la)); 3794 } 3795 lpfc_mbx_process_link_up(phba, la); 3796 3797 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3798 lpfc_cmf_signal_init(phba); 3799 3800 if (phba->lmt & LMT_64Gb) 3801 lpfc_read_lds_params(phba); 3802 3803 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3804 attn_type == LPFC_ATT_UNEXP_WWPN) { 3805 phba->fc_stat.LinkDown++; 3806 if (phba->link_flag & LS_LOOPBACK_MODE) 3807 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3808 "1308 Link Down Event in loop back mode " 3809 "x%x received " 3810 "Data: x%x x%x x%x\n", 3811 la->eventTag, phba->fc_eventTag, 3812 phba->pport->port_state, vport->fc_flag); 3813 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3814 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3815 "1313 Link Down Unexpected FA WWPN Event x%x " 3816 "received Data: x%x x%x x%x x%x\n", 3817 la->eventTag, phba->fc_eventTag, 3818 phba->pport->port_state, vport->fc_flag, 3819 bf_get(lpfc_mbx_read_top_fa, la)); 3820 else 3821 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3822 "1305 Link Down Event x%x received " 3823 "Data: x%x x%x x%x x%x\n", 3824 la->eventTag, phba->fc_eventTag, 3825 phba->pport->port_state, vport->fc_flag, 3826 bf_get(lpfc_mbx_read_top_fa, la)); 3827 lpfc_mbx_issue_link_down(phba); 3828 } 3829 3830 if ((phba->sli_rev < LPFC_SLI_REV4) && 3831 bf_get(lpfc_mbx_read_top_fa, la)) 3832 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3833 "1311 fa %d\n", 3834 bf_get(lpfc_mbx_read_top_fa, la)); 3835 3836 lpfc_mbx_cmpl_read_topology_free_mbuf: 3837 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3838 } 3839 3840 /* 3841 * This routine handles processing a REG_LOGIN mailbox 3842 * command upon completion. It is setup in the LPFC_MBOXQ 3843 * as the completion routine when the command is 3844 * handed off to the SLI layer. 3845 */ 3846 void 3847 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3848 { 3849 struct lpfc_vport *vport = pmb->vport; 3850 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3851 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3852 3853 /* The driver calls the state machine with the pmb pointer 3854 * but wants to make sure a stale ctx_buf isn't acted on. 3855 * The ctx_buf is restored later and cleaned up. 3856 */ 3857 pmb->ctx_buf = NULL; 3858 pmb->ctx_ndlp = NULL; 3859 3860 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3861 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3862 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3863 kref_read(&ndlp->kref), 3864 ndlp); 3865 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3866 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3867 3868 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3869 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3870 /* We rcvd a rscn after issuing this 3871 * mbox reg login, we may have cycled 3872 * back through the state and be 3873 * back at reg login state so this 3874 * mbox needs to be ignored becase 3875 * there is another reg login in 3876 * process. 3877 */ 3878 spin_lock_irq(&ndlp->lock); 3879 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3880 spin_unlock_irq(&ndlp->lock); 3881 3882 /* 3883 * We cannot leave the RPI registered because 3884 * if we go thru discovery again for this ndlp 3885 * a subsequent REG_RPI will fail. 3886 */ 3887 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3888 lpfc_unreg_rpi(vport, ndlp); 3889 } 3890 3891 /* Call state machine */ 3892 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3893 pmb->ctx_buf = mp; 3894 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3895 3896 /* decrement the node reference count held for this callback 3897 * function. 3898 */ 3899 lpfc_nlp_put(ndlp); 3900 3901 return; 3902 } 3903 3904 static void 3905 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3906 { 3907 MAILBOX_t *mb = &pmb->u.mb; 3908 struct lpfc_vport *vport = pmb->vport; 3909 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3910 3911 switch (mb->mbxStatus) { 3912 case 0x0011: 3913 case 0x0020: 3914 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3915 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3916 mb->mbxStatus); 3917 break; 3918 /* If VPI is busy, reset the HBA */ 3919 case 0x9700: 3920 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3921 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3922 vport->vpi, mb->mbxStatus); 3923 if (!(phba->pport->load_flag & FC_UNLOADING)) 3924 lpfc_workq_post_event(phba, NULL, NULL, 3925 LPFC_EVT_RESET_HBA); 3926 } 3927 spin_lock_irq(shost->host_lock); 3928 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3929 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3930 spin_unlock_irq(shost->host_lock); 3931 mempool_free(pmb, phba->mbox_mem_pool); 3932 lpfc_cleanup_vports_rrqs(vport, NULL); 3933 /* 3934 * This shost reference might have been taken at the beginning of 3935 * lpfc_vport_delete() 3936 */ 3937 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3938 scsi_host_put(shost); 3939 } 3940 3941 int 3942 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3943 { 3944 struct lpfc_hba *phba = vport->phba; 3945 LPFC_MBOXQ_t *mbox; 3946 int rc; 3947 3948 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3949 if (!mbox) 3950 return 1; 3951 3952 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3953 mbox->vport = vport; 3954 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3955 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3956 if (rc == MBX_NOT_FINISHED) { 3957 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3958 "1800 Could not issue unreg_vpi\n"); 3959 mempool_free(mbox, phba->mbox_mem_pool); 3960 return rc; 3961 } 3962 return 0; 3963 } 3964 3965 static void 3966 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3967 { 3968 struct lpfc_vport *vport = pmb->vport; 3969 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3970 MAILBOX_t *mb = &pmb->u.mb; 3971 3972 switch (mb->mbxStatus) { 3973 case 0x0011: 3974 case 0x9601: 3975 case 0x9602: 3976 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3977 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3978 mb->mbxStatus); 3979 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3980 spin_lock_irq(shost->host_lock); 3981 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3982 spin_unlock_irq(shost->host_lock); 3983 vport->fc_myDID = 0; 3984 3985 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3986 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3987 if (phba->nvmet_support) 3988 lpfc_nvmet_update_targetport(phba); 3989 else 3990 lpfc_nvme_update_localport(vport); 3991 } 3992 goto out; 3993 } 3994 3995 spin_lock_irq(shost->host_lock); 3996 vport->vpi_state |= LPFC_VPI_REGISTERED; 3997 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3998 spin_unlock_irq(shost->host_lock); 3999 vport->num_disc_nodes = 0; 4000 /* go thru NPR list and issue ELS PLOGIs */ 4001 if (vport->fc_npr_cnt) 4002 lpfc_els_disc_plogi(vport); 4003 4004 if (!vport->num_disc_nodes) { 4005 spin_lock_irq(shost->host_lock); 4006 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4007 spin_unlock_irq(shost->host_lock); 4008 lpfc_can_disctmo(vport); 4009 } 4010 vport->port_state = LPFC_VPORT_READY; 4011 4012 out: 4013 mempool_free(pmb, phba->mbox_mem_pool); 4014 return; 4015 } 4016 4017 /** 4018 * lpfc_create_static_vport - Read HBA config region to create static vports. 4019 * @phba: pointer to lpfc hba data structure. 4020 * 4021 * This routine issue a DUMP mailbox command for config region 22 to get 4022 * the list of static vports to be created. The function create vports 4023 * based on the information returned from the HBA. 4024 **/ 4025 void 4026 lpfc_create_static_vport(struct lpfc_hba *phba) 4027 { 4028 LPFC_MBOXQ_t *pmb = NULL; 4029 MAILBOX_t *mb; 4030 struct static_vport_info *vport_info; 4031 int mbx_wait_rc = 0, i; 4032 struct fc_vport_identifiers vport_id; 4033 struct fc_vport *new_fc_vport; 4034 struct Scsi_Host *shost; 4035 struct lpfc_vport *vport; 4036 uint16_t offset = 0; 4037 uint8_t *vport_buff; 4038 struct lpfc_dmabuf *mp; 4039 uint32_t byte_count = 0; 4040 4041 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4042 if (!pmb) { 4043 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4044 "0542 lpfc_create_static_vport failed to" 4045 " allocate mailbox memory\n"); 4046 return; 4047 } 4048 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4049 mb = &pmb->u.mb; 4050 4051 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4052 if (!vport_info) { 4053 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4054 "0543 lpfc_create_static_vport failed to" 4055 " allocate vport_info\n"); 4056 mempool_free(pmb, phba->mbox_mem_pool); 4057 return; 4058 } 4059 4060 vport_buff = (uint8_t *) vport_info; 4061 do { 4062 /* While loop iteration forces a free dma buffer from 4063 * the previous loop because the mbox is reused and 4064 * the dump routine is a single-use construct. 4065 */ 4066 if (pmb->ctx_buf) { 4067 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4068 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4069 kfree(mp); 4070 pmb->ctx_buf = NULL; 4071 } 4072 if (lpfc_dump_static_vport(phba, pmb, offset)) 4073 goto out; 4074 4075 pmb->vport = phba->pport; 4076 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4077 LPFC_MBOX_TMO); 4078 4079 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4080 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4081 "0544 lpfc_create_static_vport failed to" 4082 " issue dump mailbox command ret 0x%x " 4083 "status 0x%x\n", 4084 mbx_wait_rc, mb->mbxStatus); 4085 goto out; 4086 } 4087 4088 if (phba->sli_rev == LPFC_SLI_REV4) { 4089 byte_count = pmb->u.mqe.un.mb_words[5]; 4090 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4091 if (byte_count > sizeof(struct static_vport_info) - 4092 offset) 4093 byte_count = sizeof(struct static_vport_info) 4094 - offset; 4095 memcpy(vport_buff + offset, mp->virt, byte_count); 4096 offset += byte_count; 4097 } else { 4098 if (mb->un.varDmp.word_cnt > 4099 sizeof(struct static_vport_info) - offset) 4100 mb->un.varDmp.word_cnt = 4101 sizeof(struct static_vport_info) 4102 - offset; 4103 byte_count = mb->un.varDmp.word_cnt; 4104 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4105 vport_buff + offset, 4106 byte_count); 4107 4108 offset += byte_count; 4109 } 4110 4111 } while (byte_count && 4112 offset < sizeof(struct static_vport_info)); 4113 4114 4115 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4116 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4117 != VPORT_INFO_REV)) { 4118 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4119 "0545 lpfc_create_static_vport bad" 4120 " information header 0x%x 0x%x\n", 4121 le32_to_cpu(vport_info->signature), 4122 le32_to_cpu(vport_info->rev) & 4123 VPORT_INFO_REV_MASK); 4124 4125 goto out; 4126 } 4127 4128 shost = lpfc_shost_from_vport(phba->pport); 4129 4130 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4131 memset(&vport_id, 0, sizeof(vport_id)); 4132 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4133 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4134 if (!vport_id.port_name || !vport_id.node_name) 4135 continue; 4136 4137 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4138 vport_id.vport_type = FC_PORTTYPE_NPIV; 4139 vport_id.disable = false; 4140 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4141 4142 if (!new_fc_vport) { 4143 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4144 "0546 lpfc_create_static_vport failed to" 4145 " create vport\n"); 4146 continue; 4147 } 4148 4149 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4150 vport->vport_flag |= STATIC_VPORT; 4151 } 4152 4153 out: 4154 kfree(vport_info); 4155 if (mbx_wait_rc != MBX_TIMEOUT) 4156 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4157 } 4158 4159 /* 4160 * This routine handles processing a Fabric REG_LOGIN mailbox 4161 * command upon completion. It is setup in the LPFC_MBOXQ 4162 * as the completion routine when the command is 4163 * handed off to the SLI layer. 4164 */ 4165 void 4166 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4167 { 4168 struct lpfc_vport *vport = pmb->vport; 4169 MAILBOX_t *mb = &pmb->u.mb; 4170 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4171 struct Scsi_Host *shost; 4172 4173 pmb->ctx_ndlp = NULL; 4174 4175 if (mb->mbxStatus) { 4176 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4177 "0258 Register Fabric login error: 0x%x\n", 4178 mb->mbxStatus); 4179 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4180 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4181 /* FLOGI failed, use loop map to make discovery list */ 4182 lpfc_disc_list_loopmap(vport); 4183 4184 /* Start discovery */ 4185 lpfc_disc_start(vport); 4186 /* Decrement the reference count to ndlp after the 4187 * reference to the ndlp are done. 4188 */ 4189 lpfc_nlp_put(ndlp); 4190 return; 4191 } 4192 4193 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4194 /* Decrement the reference count to ndlp after the reference 4195 * to the ndlp are done. 4196 */ 4197 lpfc_nlp_put(ndlp); 4198 return; 4199 } 4200 4201 if (phba->sli_rev < LPFC_SLI_REV4) 4202 ndlp->nlp_rpi = mb->un.varWords[0]; 4203 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4204 ndlp->nlp_type |= NLP_FABRIC; 4205 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4206 4207 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4208 /* when physical port receive logo donot start 4209 * vport discovery */ 4210 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 4211 lpfc_start_fdiscs(phba); 4212 else { 4213 shost = lpfc_shost_from_vport(vport); 4214 spin_lock_irq(shost->host_lock); 4215 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 4216 spin_unlock_irq(shost->host_lock); 4217 } 4218 lpfc_do_scr_ns_plogi(phba, vport); 4219 } 4220 4221 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4222 4223 /* Drop the reference count from the mbox at the end after 4224 * all the current reference to the ndlp have been done. 4225 */ 4226 lpfc_nlp_put(ndlp); 4227 return; 4228 } 4229 4230 /* 4231 * This routine will issue a GID_FT for each FC4 Type supported 4232 * by the driver. ALL GID_FTs must complete before discovery is started. 4233 */ 4234 int 4235 lpfc_issue_gidft(struct lpfc_vport *vport) 4236 { 4237 /* Good status, issue CT Request to NameServer */ 4238 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4239 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4240 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4241 /* Cannot issue NameServer FCP Query, so finish up 4242 * discovery 4243 */ 4244 lpfc_printf_vlog(vport, KERN_ERR, 4245 LOG_TRACE_EVENT, 4246 "0604 %s FC TYPE %x %s\n", 4247 "Failed to issue GID_FT to ", 4248 FC_TYPE_FCP, 4249 "Finishing discovery."); 4250 return 0; 4251 } 4252 vport->gidft_inp++; 4253 } 4254 4255 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4256 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4257 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4258 /* Cannot issue NameServer NVME Query, so finish up 4259 * discovery 4260 */ 4261 lpfc_printf_vlog(vport, KERN_ERR, 4262 LOG_TRACE_EVENT, 4263 "0605 %s FC_TYPE %x %s %d\n", 4264 "Failed to issue GID_FT to ", 4265 FC_TYPE_NVME, 4266 "Finishing discovery: gidftinp ", 4267 vport->gidft_inp); 4268 if (vport->gidft_inp == 0) 4269 return 0; 4270 } else 4271 vport->gidft_inp++; 4272 } 4273 return vport->gidft_inp; 4274 } 4275 4276 /** 4277 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4278 * @vport: The virtual port for which this call is being executed. 4279 * 4280 * This routine will issue a GID_PT to get a list of all N_Ports 4281 * 4282 * Return value : 4283 * 0 - Failure to issue a GID_PT 4284 * 1 - GID_PT issued 4285 **/ 4286 int 4287 lpfc_issue_gidpt(struct lpfc_vport *vport) 4288 { 4289 /* Good status, issue CT Request to NameServer */ 4290 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4291 /* Cannot issue NameServer FCP Query, so finish up 4292 * discovery 4293 */ 4294 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4295 "0606 %s Port TYPE %x %s\n", 4296 "Failed to issue GID_PT to ", 4297 GID_PT_N_PORT, 4298 "Finishing discovery."); 4299 return 0; 4300 } 4301 vport->gidft_inp++; 4302 return 1; 4303 } 4304 4305 /* 4306 * This routine handles processing a NameServer REG_LOGIN mailbox 4307 * command upon completion. It is setup in the LPFC_MBOXQ 4308 * as the completion routine when the command is 4309 * handed off to the SLI layer. 4310 */ 4311 void 4312 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4313 { 4314 MAILBOX_t *mb = &pmb->u.mb; 4315 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4316 struct lpfc_vport *vport = pmb->vport; 4317 int rc; 4318 4319 pmb->ctx_ndlp = NULL; 4320 vport->gidft_inp = 0; 4321 4322 if (mb->mbxStatus) { 4323 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4324 "0260 Register NameServer error: 0x%x\n", 4325 mb->mbxStatus); 4326 4327 out: 4328 /* decrement the node reference count held for this 4329 * callback function. 4330 */ 4331 lpfc_nlp_put(ndlp); 4332 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4333 4334 /* If the node is not registered with the scsi or nvme 4335 * transport, remove the fabric node. The failed reg_login 4336 * is terminal. 4337 */ 4338 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4339 spin_lock_irq(&ndlp->lock); 4340 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4341 spin_unlock_irq(&ndlp->lock); 4342 lpfc_nlp_not_used(ndlp); 4343 } 4344 4345 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4346 /* 4347 * RegLogin failed, use loop map to make discovery 4348 * list 4349 */ 4350 lpfc_disc_list_loopmap(vport); 4351 4352 /* Start discovery */ 4353 lpfc_disc_start(vport); 4354 return; 4355 } 4356 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4357 return; 4358 } 4359 4360 if (phba->sli_rev < LPFC_SLI_REV4) 4361 ndlp->nlp_rpi = mb->un.varWords[0]; 4362 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4363 ndlp->nlp_type |= NLP_FABRIC; 4364 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4365 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4366 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4367 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4368 kref_read(&ndlp->kref), 4369 ndlp); 4370 4371 if (vport->port_state < LPFC_VPORT_READY) { 4372 /* Link up discovery requires Fabric registration. */ 4373 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4374 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4375 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4376 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4377 4378 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4379 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4380 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4381 4382 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4383 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4384 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4385 FC_TYPE_NVME); 4386 4387 /* Issue SCR just before NameServer GID_FT Query */ 4388 lpfc_issue_els_scr(vport, 0); 4389 4390 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4391 * with initial FW values provided the congestion mode is 4392 * not off. Note that signals may or may not be supported 4393 * by the adapter but FPIN is provided by default for 1 4394 * or both missing signals support. 4395 */ 4396 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4397 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4398 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4399 rc = lpfc_issue_els_edc(vport, 0); 4400 lpfc_printf_log(phba, KERN_INFO, 4401 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4402 "4220 Issue EDC status x%x Data x%x\n", 4403 rc, phba->cgn_init_reg_signal); 4404 } else if (phba->lmt & LMT_64Gb) { 4405 /* may send link fault capability descriptor */ 4406 lpfc_issue_els_edc(vport, 0); 4407 } else { 4408 lpfc_issue_els_rdf(vport, 0); 4409 } 4410 } 4411 4412 vport->fc_ns_retry = 0; 4413 if (lpfc_issue_gidft(vport) == 0) 4414 goto out; 4415 4416 /* 4417 * At this point in time we may need to wait for multiple 4418 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4419 * 4420 * decrement the node reference count held for this 4421 * callback function. 4422 */ 4423 lpfc_nlp_put(ndlp); 4424 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4425 return; 4426 } 4427 4428 /* 4429 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4430 * command upon completion. It is setup in the LPFC_MBOXQ 4431 * as the completion routine when the command is handed off to the SLI layer. 4432 */ 4433 void 4434 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4435 { 4436 struct lpfc_vport *vport = pmb->vport; 4437 MAILBOX_t *mb = &pmb->u.mb; 4438 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4439 4440 pmb->ctx_ndlp = NULL; 4441 if (mb->mbxStatus) { 4442 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4443 "0933 %s: Register FC login error: 0x%x\n", 4444 __func__, mb->mbxStatus); 4445 goto out; 4446 } 4447 4448 lpfc_check_nlp_post_devloss(vport, ndlp); 4449 4450 if (phba->sli_rev < LPFC_SLI_REV4) 4451 ndlp->nlp_rpi = mb->un.varWords[0]; 4452 4453 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4454 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4455 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4456 ndlp->nlp_state); 4457 4458 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4459 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4460 ndlp->nlp_type |= NLP_FABRIC; 4461 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4462 4463 out: 4464 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4465 4466 /* Drop the reference count from the mbox at the end after 4467 * all the current reference to the ndlp have been done. 4468 */ 4469 lpfc_nlp_put(ndlp); 4470 } 4471 4472 static void 4473 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4474 { 4475 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4476 struct fc_rport *rport; 4477 struct lpfc_rport_data *rdata; 4478 struct fc_rport_identifiers rport_ids; 4479 struct lpfc_hba *phba = vport->phba; 4480 unsigned long flags; 4481 4482 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4483 return; 4484 4485 /* Remote port has reappeared. Re-register w/ FC transport */ 4486 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4487 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4488 rport_ids.port_id = ndlp->nlp_DID; 4489 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4490 4491 4492 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4493 "rport add: did:x%x flg:x%x type x%x", 4494 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4495 4496 /* Don't add the remote port if unloading. */ 4497 if (vport->load_flag & FC_UNLOADING) 4498 return; 4499 4500 /* 4501 * Disassociate any older association between this ndlp and rport 4502 */ 4503 if (ndlp->rport) { 4504 rdata = ndlp->rport->dd_data; 4505 rdata->pnode = NULL; 4506 } 4507 4508 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4509 if (!rport) { 4510 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4511 "Warning: fc_remote_port_add failed\n"); 4512 return; 4513 } 4514 4515 /* Successful port add. Complete initializing node data */ 4516 rport->maxframe_size = ndlp->nlp_maxframe; 4517 rport->supported_classes = ndlp->nlp_class_sup; 4518 rdata = rport->dd_data; 4519 rdata->pnode = lpfc_nlp_get(ndlp); 4520 if (!rdata->pnode) { 4521 dev_warn(&phba->pcidev->dev, 4522 "Warning - node ref failed. Unreg rport\n"); 4523 fc_remote_port_delete(rport); 4524 ndlp->rport = NULL; 4525 return; 4526 } 4527 4528 spin_lock_irqsave(&ndlp->lock, flags); 4529 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4530 spin_unlock_irqrestore(&ndlp->lock, flags); 4531 4532 if (ndlp->nlp_type & NLP_FCP_TARGET) 4533 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4534 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4535 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4536 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4537 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4538 if (ndlp->nlp_type & NLP_NVME_TARGET) 4539 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4540 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4541 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4542 4543 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4544 fc_remote_port_rolechg(rport, rport_ids.roles); 4545 4546 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4547 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4548 __func__, rport, rport->port_id, rport->roles, 4549 kref_read(&ndlp->kref)); 4550 4551 if ((rport->scsi_target_id != -1) && 4552 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4553 ndlp->nlp_sid = rport->scsi_target_id; 4554 } 4555 4556 return; 4557 } 4558 4559 static void 4560 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4561 { 4562 struct fc_rport *rport = ndlp->rport; 4563 struct lpfc_vport *vport = ndlp->vport; 4564 4565 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4566 return; 4567 4568 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4569 "rport delete: did:x%x flg:x%x type x%x", 4570 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4571 4572 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4573 "3184 rport unregister x%06x, rport x%px " 4574 "xptflg x%x refcnt %d\n", 4575 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4576 kref_read(&ndlp->kref)); 4577 4578 fc_remote_port_delete(rport); 4579 lpfc_nlp_put(ndlp); 4580 } 4581 4582 static void 4583 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4584 { 4585 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4586 unsigned long iflags; 4587 4588 spin_lock_irqsave(shost->host_lock, iflags); 4589 switch (state) { 4590 case NLP_STE_UNUSED_NODE: 4591 vport->fc_unused_cnt += count; 4592 break; 4593 case NLP_STE_PLOGI_ISSUE: 4594 vport->fc_plogi_cnt += count; 4595 break; 4596 case NLP_STE_ADISC_ISSUE: 4597 vport->fc_adisc_cnt += count; 4598 break; 4599 case NLP_STE_REG_LOGIN_ISSUE: 4600 vport->fc_reglogin_cnt += count; 4601 break; 4602 case NLP_STE_PRLI_ISSUE: 4603 vport->fc_prli_cnt += count; 4604 break; 4605 case NLP_STE_UNMAPPED_NODE: 4606 vport->fc_unmap_cnt += count; 4607 break; 4608 case NLP_STE_MAPPED_NODE: 4609 vport->fc_map_cnt += count; 4610 break; 4611 case NLP_STE_NPR_NODE: 4612 if (vport->fc_npr_cnt == 0 && count == -1) 4613 vport->fc_npr_cnt = 0; 4614 else 4615 vport->fc_npr_cnt += count; 4616 break; 4617 } 4618 spin_unlock_irqrestore(shost->host_lock, iflags); 4619 } 4620 4621 /* Register a node with backend if not already done */ 4622 void 4623 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4624 { 4625 unsigned long iflags; 4626 4627 lpfc_check_nlp_post_devloss(vport, ndlp); 4628 4629 spin_lock_irqsave(&ndlp->lock, iflags); 4630 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4631 /* Already registered with backend, trigger rescan */ 4632 spin_unlock_irqrestore(&ndlp->lock, iflags); 4633 4634 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4635 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4636 lpfc_nvme_rescan_port(vport, ndlp); 4637 } 4638 return; 4639 } 4640 4641 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4642 spin_unlock_irqrestore(&ndlp->lock, iflags); 4643 4644 if (lpfc_valid_xpt_node(ndlp)) { 4645 vport->phba->nport_event_cnt++; 4646 /* 4647 * Tell the fc transport about the port, if we haven't 4648 * already. If we have, and it's a scsi entity, be 4649 */ 4650 lpfc_register_remote_port(vport, ndlp); 4651 } 4652 4653 /* We are done if we do not have any NVME remote node */ 4654 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4655 return; 4656 4657 /* Notify the NVME transport of this new rport. */ 4658 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4659 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4660 if (vport->phba->nvmet_support == 0) { 4661 /* Register this rport with the transport. 4662 * Only NVME Target Rports are registered with 4663 * the transport. 4664 */ 4665 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4666 vport->phba->nport_event_cnt++; 4667 lpfc_nvme_register_port(vport, ndlp); 4668 } 4669 } else { 4670 /* Just take an NDLP ref count since the 4671 * target does not register rports. 4672 */ 4673 lpfc_nlp_get(ndlp); 4674 } 4675 } 4676 } 4677 4678 /* Unregister a node with backend if not already done */ 4679 void 4680 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4681 { 4682 unsigned long iflags; 4683 4684 spin_lock_irqsave(&ndlp->lock, iflags); 4685 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4686 spin_unlock_irqrestore(&ndlp->lock, iflags); 4687 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4688 "0999 %s Not regd: ndlp x%px rport x%px DID " 4689 "x%x FLG x%x XPT x%x\n", 4690 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4691 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4692 return; 4693 } 4694 4695 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4696 spin_unlock_irqrestore(&ndlp->lock, iflags); 4697 4698 if (ndlp->rport && 4699 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4700 vport->phba->nport_event_cnt++; 4701 lpfc_unregister_remote_port(ndlp); 4702 } else if (!ndlp->rport) { 4703 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4704 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4705 " XPT x%x refcnt %d\n", 4706 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4707 ndlp->fc4_xpt_flags, 4708 kref_read(&ndlp->kref)); 4709 } 4710 4711 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4712 vport->phba->nport_event_cnt++; 4713 if (vport->phba->nvmet_support == 0) { 4714 /* Start devloss if target. */ 4715 if (ndlp->nlp_type & NLP_NVME_TARGET) 4716 lpfc_nvme_unregister_port(vport, ndlp); 4717 } else { 4718 /* NVMET has no upcall. */ 4719 lpfc_nlp_put(ndlp); 4720 } 4721 } 4722 4723 } 4724 4725 /* 4726 * Adisc state change handling 4727 */ 4728 static void 4729 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4730 int new_state) 4731 { 4732 switch (new_state) { 4733 /* 4734 * Any state to ADISC_ISSUE 4735 * Do nothing, adisc cmpl handling will trigger state changes 4736 */ 4737 case NLP_STE_ADISC_ISSUE: 4738 break; 4739 4740 /* 4741 * ADISC_ISSUE to mapped states 4742 * Trigger a registration with backend, it will be nop if 4743 * already registered 4744 */ 4745 case NLP_STE_UNMAPPED_NODE: 4746 ndlp->nlp_type |= NLP_FC_NODE; 4747 fallthrough; 4748 case NLP_STE_MAPPED_NODE: 4749 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4750 lpfc_nlp_reg_node(vport, ndlp); 4751 break; 4752 4753 /* 4754 * ADISC_ISSUE to non-mapped states 4755 * We are moving from ADISC_ISSUE to a non-mapped state because 4756 * ADISC failed, we would have skipped unregistering with 4757 * backend, attempt it now 4758 */ 4759 case NLP_STE_NPR_NODE: 4760 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4761 fallthrough; 4762 default: 4763 lpfc_nlp_unreg_node(vport, ndlp); 4764 break; 4765 } 4766 4767 } 4768 4769 static void 4770 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4771 int old_state, int new_state) 4772 { 4773 /* Trap ADISC changes here */ 4774 if (new_state == NLP_STE_ADISC_ISSUE || 4775 old_state == NLP_STE_ADISC_ISSUE) { 4776 lpfc_handle_adisc_state(vport, ndlp, new_state); 4777 return; 4778 } 4779 4780 if (new_state == NLP_STE_UNMAPPED_NODE) { 4781 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4782 ndlp->nlp_type |= NLP_FC_NODE; 4783 } 4784 if (new_state == NLP_STE_MAPPED_NODE) 4785 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4786 if (new_state == NLP_STE_NPR_NODE) 4787 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4788 4789 /* Reg/Unreg for FCP and NVME Transport interface */ 4790 if ((old_state == NLP_STE_MAPPED_NODE || 4791 old_state == NLP_STE_UNMAPPED_NODE)) { 4792 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4793 * if linkup. In linkdown do unreg_node 4794 */ 4795 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4796 !lpfc_is_link_up(vport->phba)) 4797 lpfc_nlp_unreg_node(vport, ndlp); 4798 } 4799 4800 if (new_state == NLP_STE_MAPPED_NODE || 4801 new_state == NLP_STE_UNMAPPED_NODE) 4802 lpfc_nlp_reg_node(vport, ndlp); 4803 4804 /* 4805 * If the node just added to Mapped list was an FCP target, 4806 * but the remote port registration failed or assigned a target 4807 * id outside the presentable range - move the node to the 4808 * Unmapped List. 4809 */ 4810 if ((new_state == NLP_STE_MAPPED_NODE) && 4811 (ndlp->nlp_type & NLP_FCP_TARGET) && 4812 (!ndlp->rport || 4813 ndlp->rport->scsi_target_id == -1 || 4814 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4815 spin_lock_irq(&ndlp->lock); 4816 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4817 spin_unlock_irq(&ndlp->lock); 4818 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4819 } 4820 } 4821 4822 static char * 4823 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4824 { 4825 static char *states[] = { 4826 [NLP_STE_UNUSED_NODE] = "UNUSED", 4827 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4828 [NLP_STE_ADISC_ISSUE] = "ADISC", 4829 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4830 [NLP_STE_PRLI_ISSUE] = "PRLI", 4831 [NLP_STE_LOGO_ISSUE] = "LOGO", 4832 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4833 [NLP_STE_MAPPED_NODE] = "MAPPED", 4834 [NLP_STE_NPR_NODE] = "NPR", 4835 }; 4836 4837 if (state < NLP_STE_MAX_STATE && states[state]) 4838 strlcpy(buffer, states[state], size); 4839 else 4840 snprintf(buffer, size, "unknown (%d)", state); 4841 return buffer; 4842 } 4843 4844 void 4845 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4846 int state) 4847 { 4848 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4849 int old_state = ndlp->nlp_state; 4850 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4851 char name1[16], name2[16]; 4852 4853 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4854 "0904 NPort state transition x%06x, %s -> %s\n", 4855 ndlp->nlp_DID, 4856 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4857 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4858 4859 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4860 "node statechg did:x%x old:%d ste:%d", 4861 ndlp->nlp_DID, old_state, state); 4862 4863 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4864 state != NLP_STE_UNUSED_NODE) { 4865 ndlp->nlp_flag &= ~NLP_DROPPED; 4866 lpfc_nlp_get(ndlp); 4867 } 4868 4869 if (old_state == NLP_STE_NPR_NODE && 4870 state != NLP_STE_NPR_NODE) 4871 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4872 if (old_state == NLP_STE_UNMAPPED_NODE) { 4873 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4874 ndlp->nlp_type &= ~NLP_FC_NODE; 4875 } 4876 4877 if (list_empty(&ndlp->nlp_listp)) { 4878 spin_lock_irq(shost->host_lock); 4879 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4880 spin_unlock_irq(shost->host_lock); 4881 } else if (old_state) 4882 lpfc_nlp_counters(vport, old_state, -1); 4883 4884 ndlp->nlp_state = state; 4885 lpfc_nlp_counters(vport, state, 1); 4886 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4887 } 4888 4889 void 4890 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4891 { 4892 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4893 4894 if (list_empty(&ndlp->nlp_listp)) { 4895 spin_lock_irq(shost->host_lock); 4896 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4897 spin_unlock_irq(shost->host_lock); 4898 } 4899 } 4900 4901 void 4902 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4903 { 4904 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4905 4906 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4907 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4908 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4909 spin_lock_irq(shost->host_lock); 4910 list_del_init(&ndlp->nlp_listp); 4911 spin_unlock_irq(shost->host_lock); 4912 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4913 NLP_STE_UNUSED_NODE); 4914 } 4915 4916 /** 4917 * lpfc_initialize_node - Initialize all fields of node object 4918 * @vport: Pointer to Virtual Port object. 4919 * @ndlp: Pointer to FC node object. 4920 * @did: FC_ID of the node. 4921 * 4922 * This function is always called when node object need to be initialized. 4923 * It initializes all the fields of the node object. Although the reference 4924 * to phba from @ndlp can be obtained indirectly through it's reference to 4925 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4926 * to the life-span of the @ndlp might go beyond the existence of @vport as 4927 * the final release of ndlp is determined by its reference count. And, the 4928 * operation on @ndlp needs the reference to phba. 4929 **/ 4930 static inline void 4931 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4932 uint32_t did) 4933 { 4934 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4935 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4936 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4937 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4938 4939 ndlp->nlp_DID = did; 4940 ndlp->vport = vport; 4941 ndlp->phba = vport->phba; 4942 ndlp->nlp_sid = NLP_NO_SID; 4943 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4944 kref_init(&ndlp->kref); 4945 atomic_set(&ndlp->cmd_pending, 0); 4946 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4947 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4948 } 4949 4950 void 4951 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4952 { 4953 /* 4954 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4955 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4956 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4957 * until ALL other outstanding threads have completed. We check 4958 * that the ndlp not already in the UNUSED state before we proceed. 4959 */ 4960 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4961 return; 4962 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4963 ndlp->nlp_flag |= NLP_DROPPED; 4964 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4965 lpfc_cleanup_vports_rrqs(vport, ndlp); 4966 lpfc_unreg_rpi(vport, ndlp); 4967 } 4968 4969 lpfc_nlp_put(ndlp); 4970 return; 4971 } 4972 4973 /* 4974 * Start / ReStart rescue timer for Discovery / RSCN handling 4975 */ 4976 void 4977 lpfc_set_disctmo(struct lpfc_vport *vport) 4978 { 4979 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4980 struct lpfc_hba *phba = vport->phba; 4981 uint32_t tmo; 4982 4983 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4984 /* For FAN, timeout should be greater than edtov */ 4985 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4986 } else { 4987 /* Normal discovery timeout should be > than ELS/CT timeout 4988 * FC spec states we need 3 * ratov for CT requests 4989 */ 4990 tmo = ((phba->fc_ratov * 3) + 3); 4991 } 4992 4993 4994 if (!timer_pending(&vport->fc_disctmo)) { 4995 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4996 "set disc timer: tmo:x%x state:x%x flg:x%x", 4997 tmo, vport->port_state, vport->fc_flag); 4998 } 4999 5000 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 5001 spin_lock_irq(shost->host_lock); 5002 vport->fc_flag |= FC_DISC_TMO; 5003 spin_unlock_irq(shost->host_lock); 5004 5005 /* Start Discovery Timer state <hba_state> */ 5006 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5007 "0247 Start Discovery Timer state x%x " 5008 "Data: x%x x%lx x%x x%x\n", 5009 vport->port_state, tmo, 5010 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 5011 vport->fc_adisc_cnt); 5012 5013 return; 5014 } 5015 5016 /* 5017 * Cancel rescue timer for Discovery / RSCN handling 5018 */ 5019 int 5020 lpfc_can_disctmo(struct lpfc_vport *vport) 5021 { 5022 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5023 unsigned long iflags; 5024 5025 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5026 "can disc timer: state:x%x rtry:x%x flg:x%x", 5027 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5028 5029 /* Turn off discovery timer if its running */ 5030 if (vport->fc_flag & FC_DISC_TMO || 5031 timer_pending(&vport->fc_disctmo)) { 5032 spin_lock_irqsave(shost->host_lock, iflags); 5033 vport->fc_flag &= ~FC_DISC_TMO; 5034 spin_unlock_irqrestore(shost->host_lock, iflags); 5035 del_timer_sync(&vport->fc_disctmo); 5036 spin_lock_irqsave(&vport->work_port_lock, iflags); 5037 vport->work_port_events &= ~WORKER_DISC_TMO; 5038 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5039 } 5040 5041 /* Cancel Discovery Timer state <hba_state> */ 5042 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5043 "0248 Cancel Discovery Timer state x%x " 5044 "Data: x%x x%x x%x\n", 5045 vport->port_state, vport->fc_flag, 5046 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 5047 return 0; 5048 } 5049 5050 /* 5051 * Check specified ring for outstanding IOCB on the SLI queue 5052 * Return true if iocb matches the specified nport 5053 */ 5054 int 5055 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5056 struct lpfc_sli_ring *pring, 5057 struct lpfc_iocbq *iocb, 5058 struct lpfc_nodelist *ndlp) 5059 { 5060 struct lpfc_vport *vport = ndlp->vport; 5061 u8 ulp_command; 5062 u16 ulp_context; 5063 u32 remote_id; 5064 5065 if (iocb->vport != vport) 5066 return 0; 5067 5068 ulp_command = get_job_cmnd(phba, iocb); 5069 ulp_context = get_job_ulpcontext(phba, iocb); 5070 remote_id = get_job_els_rsp64_did(phba, iocb); 5071 5072 if (pring->ringno == LPFC_ELS_RING) { 5073 switch (ulp_command) { 5074 case CMD_GEN_REQUEST64_CR: 5075 if (iocb->ndlp == ndlp) 5076 return 1; 5077 fallthrough; 5078 case CMD_ELS_REQUEST64_CR: 5079 if (remote_id == ndlp->nlp_DID) 5080 return 1; 5081 fallthrough; 5082 case CMD_XMIT_ELS_RSP64_CX: 5083 if (iocb->ndlp == ndlp) 5084 return 1; 5085 } 5086 } else if (pring->ringno == LPFC_FCP_RING) { 5087 /* Skip match check if waiting to relogin to FCP target */ 5088 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5089 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5090 return 0; 5091 } 5092 if (ulp_context == ndlp->nlp_rpi) 5093 return 1; 5094 } 5095 return 0; 5096 } 5097 5098 static void 5099 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5100 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5101 struct list_head *dequeue_list) 5102 { 5103 struct lpfc_iocbq *iocb, *next_iocb; 5104 5105 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5106 /* Check to see if iocb matches the nport */ 5107 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5108 /* match, dequeue */ 5109 list_move_tail(&iocb->list, dequeue_list); 5110 } 5111 } 5112 5113 static void 5114 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5115 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5116 { 5117 struct lpfc_sli *psli = &phba->sli; 5118 uint32_t i; 5119 5120 spin_lock_irq(&phba->hbalock); 5121 for (i = 0; i < psli->num_rings; i++) 5122 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5123 dequeue_list); 5124 spin_unlock_irq(&phba->hbalock); 5125 } 5126 5127 static void 5128 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5129 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5130 { 5131 struct lpfc_sli_ring *pring; 5132 struct lpfc_queue *qp = NULL; 5133 5134 spin_lock_irq(&phba->hbalock); 5135 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5136 pring = qp->pring; 5137 if (!pring) 5138 continue; 5139 spin_lock(&pring->ring_lock); 5140 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5141 spin_unlock(&pring->ring_lock); 5142 } 5143 spin_unlock_irq(&phba->hbalock); 5144 } 5145 5146 /* 5147 * Free resources / clean up outstanding I/Os 5148 * associated with nlp_rpi in the LPFC_NODELIST entry. 5149 */ 5150 static int 5151 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5152 { 5153 LIST_HEAD(completions); 5154 5155 lpfc_fabric_abort_nport(ndlp); 5156 5157 /* 5158 * Everything that matches on txcmplq will be returned 5159 * by firmware with a no rpi error. 5160 */ 5161 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5162 if (phba->sli_rev != LPFC_SLI_REV4) 5163 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5164 else 5165 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5166 } 5167 5168 /* Cancel all the IOCBs from the completions list */ 5169 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5170 IOERR_SLI_ABORTED); 5171 5172 return 0; 5173 } 5174 5175 /** 5176 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5177 * @phba: Pointer to HBA context object. 5178 * @pmb: Pointer to mailbox object. 5179 * 5180 * This function will issue an ELS LOGO command after completing 5181 * the UNREG_RPI. 5182 **/ 5183 static void 5184 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5185 { 5186 struct lpfc_vport *vport = pmb->vport; 5187 struct lpfc_nodelist *ndlp; 5188 5189 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5190 if (!ndlp) 5191 return; 5192 lpfc_issue_els_logo(vport, ndlp, 0); 5193 5194 /* Check to see if there are any deferred events to process */ 5195 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5196 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5197 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5198 "1434 UNREG cmpl deferred logo x%x " 5199 "on NPort x%x Data: x%x x%px\n", 5200 ndlp->nlp_rpi, ndlp->nlp_DID, 5201 ndlp->nlp_defer_did, ndlp); 5202 5203 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5204 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5205 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5206 } else { 5207 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5208 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5209 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5210 spin_lock_irq(&ndlp->lock); 5211 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5212 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5213 spin_unlock_irq(&ndlp->lock); 5214 } 5215 spin_lock_irq(&ndlp->lock); 5216 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5217 spin_unlock_irq(&ndlp->lock); 5218 } 5219 5220 /* The node has an outstanding reference for the unreg. Now 5221 * that the LOGO action and cleanup are finished, release 5222 * resources. 5223 */ 5224 lpfc_nlp_put(ndlp); 5225 mempool_free(pmb, phba->mbox_mem_pool); 5226 } 5227 5228 /* 5229 * Sets the mailbox completion handler to be used for the 5230 * unreg_rpi command. The handler varies based on the state of 5231 * the port and what will be happening to the rpi next. 5232 */ 5233 static void 5234 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5235 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5236 { 5237 unsigned long iflags; 5238 5239 /* Driver always gets a reference on the mailbox job 5240 * in support of async jobs. 5241 */ 5242 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5243 if (!mbox->ctx_ndlp) 5244 return; 5245 5246 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5247 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5248 5249 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5250 (!(vport->load_flag & FC_UNLOADING)) && 5251 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5252 LPFC_SLI_INTF_IF_TYPE_2) && 5253 (kref_read(&ndlp->kref) > 0)) { 5254 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5255 } else { 5256 if (vport->load_flag & FC_UNLOADING) { 5257 if (phba->sli_rev == LPFC_SLI_REV4) { 5258 spin_lock_irqsave(&ndlp->lock, iflags); 5259 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5260 spin_unlock_irqrestore(&ndlp->lock, iflags); 5261 } 5262 } 5263 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5264 } 5265 } 5266 5267 /* 5268 * Free rpi associated with LPFC_NODELIST entry. 5269 * This routine is called from lpfc_freenode(), when we are removing 5270 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5271 * LOGO that completes successfully, and we are waiting to PLOGI back 5272 * to the remote NPort. In addition, it is called after we receive 5273 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5274 * we are waiting to PLOGI back to the remote NPort. 5275 */ 5276 int 5277 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5278 { 5279 struct lpfc_hba *phba = vport->phba; 5280 LPFC_MBOXQ_t *mbox; 5281 int rc, acc_plogi = 1; 5282 uint16_t rpi; 5283 5284 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5285 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5286 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5287 lpfc_printf_vlog(vport, KERN_INFO, 5288 LOG_NODE | LOG_DISCOVERY, 5289 "3366 RPI x%x needs to be " 5290 "unregistered nlp_flag x%x " 5291 "did x%x\n", 5292 ndlp->nlp_rpi, ndlp->nlp_flag, 5293 ndlp->nlp_DID); 5294 5295 /* If there is already an UNREG in progress for this ndlp, 5296 * no need to queue up another one. 5297 */ 5298 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5299 lpfc_printf_vlog(vport, KERN_INFO, 5300 LOG_NODE | LOG_DISCOVERY, 5301 "1436 unreg_rpi SKIP UNREG x%x on " 5302 "NPort x%x deferred x%x flg x%x " 5303 "Data: x%px\n", 5304 ndlp->nlp_rpi, ndlp->nlp_DID, 5305 ndlp->nlp_defer_did, 5306 ndlp->nlp_flag, ndlp); 5307 goto out; 5308 } 5309 5310 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5311 if (mbox) { 5312 /* SLI4 ports require the physical rpi value. */ 5313 rpi = ndlp->nlp_rpi; 5314 if (phba->sli_rev == LPFC_SLI_REV4) 5315 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5316 5317 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5318 mbox->vport = vport; 5319 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5320 if (!mbox->ctx_ndlp) { 5321 mempool_free(mbox, phba->mbox_mem_pool); 5322 return 1; 5323 } 5324 5325 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5326 /* 5327 * accept PLOGIs after unreg_rpi_cmpl 5328 */ 5329 acc_plogi = 0; 5330 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5331 Fabric_DID_MASK) && 5332 (!(vport->fc_flag & FC_OFFLINE_MODE))) 5333 ndlp->nlp_flag |= NLP_UNREG_INP; 5334 5335 lpfc_printf_vlog(vport, KERN_INFO, 5336 LOG_NODE | LOG_DISCOVERY, 5337 "1433 unreg_rpi UNREG x%x on " 5338 "NPort x%x deferred flg x%x " 5339 "Data:x%px\n", 5340 ndlp->nlp_rpi, ndlp->nlp_DID, 5341 ndlp->nlp_flag, ndlp); 5342 5343 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5344 if (rc == MBX_NOT_FINISHED) { 5345 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5346 mempool_free(mbox, phba->mbox_mem_pool); 5347 acc_plogi = 1; 5348 lpfc_nlp_put(ndlp); 5349 } 5350 } else { 5351 lpfc_printf_vlog(vport, KERN_INFO, 5352 LOG_NODE | LOG_DISCOVERY, 5353 "1444 Failed to allocate mempool " 5354 "unreg_rpi UNREG x%x, " 5355 "DID x%x, flag x%x, " 5356 "ndlp x%px\n", 5357 ndlp->nlp_rpi, ndlp->nlp_DID, 5358 ndlp->nlp_flag, ndlp); 5359 5360 /* Because mempool_alloc failed, we 5361 * will issue a LOGO here and keep the rpi alive if 5362 * not unloading. 5363 */ 5364 if (!(vport->load_flag & FC_UNLOADING)) { 5365 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5366 lpfc_issue_els_logo(vport, ndlp, 0); 5367 ndlp->nlp_prev_state = ndlp->nlp_state; 5368 lpfc_nlp_set_state(vport, ndlp, 5369 NLP_STE_NPR_NODE); 5370 } 5371 5372 return 1; 5373 } 5374 lpfc_no_rpi(phba, ndlp); 5375 out: 5376 if (phba->sli_rev != LPFC_SLI_REV4) 5377 ndlp->nlp_rpi = 0; 5378 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5379 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5380 if (acc_plogi) 5381 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5382 return 1; 5383 } 5384 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5385 return 0; 5386 } 5387 5388 /** 5389 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5390 * @phba: pointer to lpfc hba data structure. 5391 * 5392 * This routine is invoked to unregister all the currently registered RPIs 5393 * to the HBA. 5394 **/ 5395 void 5396 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5397 { 5398 struct lpfc_vport **vports; 5399 struct lpfc_nodelist *ndlp; 5400 struct Scsi_Host *shost; 5401 int i; 5402 5403 vports = lpfc_create_vport_work_array(phba); 5404 if (!vports) { 5405 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5406 "2884 Vport array allocation failed \n"); 5407 return; 5408 } 5409 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5410 shost = lpfc_shost_from_vport(vports[i]); 5411 spin_lock_irq(shost->host_lock); 5412 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5413 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5414 /* The mempool_alloc might sleep */ 5415 spin_unlock_irq(shost->host_lock); 5416 lpfc_unreg_rpi(vports[i], ndlp); 5417 spin_lock_irq(shost->host_lock); 5418 } 5419 } 5420 spin_unlock_irq(shost->host_lock); 5421 } 5422 lpfc_destroy_vport_work_array(phba, vports); 5423 } 5424 5425 void 5426 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5427 { 5428 struct lpfc_hba *phba = vport->phba; 5429 LPFC_MBOXQ_t *mbox; 5430 int rc; 5431 5432 if (phba->sli_rev == LPFC_SLI_REV4) { 5433 lpfc_sli4_unreg_all_rpis(vport); 5434 return; 5435 } 5436 5437 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5438 if (mbox) { 5439 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5440 mbox); 5441 mbox->vport = vport; 5442 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5443 mbox->ctx_ndlp = NULL; 5444 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5445 if (rc != MBX_TIMEOUT) 5446 mempool_free(mbox, phba->mbox_mem_pool); 5447 5448 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5449 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5450 "1836 Could not issue " 5451 "unreg_login(all_rpis) status %d\n", 5452 rc); 5453 } 5454 } 5455 5456 void 5457 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5458 { 5459 struct lpfc_hba *phba = vport->phba; 5460 LPFC_MBOXQ_t *mbox; 5461 int rc; 5462 5463 /* Unreg DID is an SLI3 operation. */ 5464 if (phba->sli_rev > LPFC_SLI_REV3) 5465 return; 5466 5467 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5468 if (mbox) { 5469 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5470 mbox); 5471 mbox->vport = vport; 5472 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5473 mbox->ctx_ndlp = NULL; 5474 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5475 if (rc != MBX_TIMEOUT) 5476 mempool_free(mbox, phba->mbox_mem_pool); 5477 5478 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5479 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5480 "1815 Could not issue " 5481 "unreg_did (default rpis) status %d\n", 5482 rc); 5483 } 5484 } 5485 5486 /* 5487 * Free resources associated with LPFC_NODELIST entry 5488 * so it can be freed. 5489 */ 5490 static int 5491 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5492 { 5493 struct lpfc_hba *phba = vport->phba; 5494 LPFC_MBOXQ_t *mb, *nextmb; 5495 5496 /* Cleanup node for NPort <nlp_DID> */ 5497 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5498 "0900 Cleanup node for NPort x%x " 5499 "Data: x%x x%x x%x\n", 5500 ndlp->nlp_DID, ndlp->nlp_flag, 5501 ndlp->nlp_state, ndlp->nlp_rpi); 5502 lpfc_dequeue_node(vport, ndlp); 5503 5504 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5505 5506 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5507 if ((mb = phba->sli.mbox_active)) { 5508 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5509 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5510 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5511 mb->ctx_ndlp = NULL; 5512 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5513 } 5514 } 5515 5516 spin_lock_irq(&phba->hbalock); 5517 /* Cleanup REG_LOGIN completions which are not yet processed */ 5518 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5519 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5520 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5521 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5522 continue; 5523 5524 mb->ctx_ndlp = NULL; 5525 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5526 } 5527 5528 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5529 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5530 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5531 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5532 list_del(&mb->list); 5533 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED); 5534 5535 /* Don't invoke lpfc_nlp_put. The driver is in 5536 * lpfc_nlp_release context. 5537 */ 5538 } 5539 } 5540 spin_unlock_irq(&phba->hbalock); 5541 5542 lpfc_els_abort(phba, ndlp); 5543 5544 spin_lock_irq(&ndlp->lock); 5545 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5546 spin_unlock_irq(&ndlp->lock); 5547 5548 ndlp->nlp_last_elscmd = 0; 5549 del_timer_sync(&ndlp->nlp_delayfunc); 5550 5551 list_del_init(&ndlp->els_retry_evt.evt_listp); 5552 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5553 list_del_init(&ndlp->recovery_evt.evt_listp); 5554 lpfc_cleanup_vports_rrqs(vport, ndlp); 5555 5556 if (phba->sli_rev == LPFC_SLI_REV4) 5557 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5558 5559 return 0; 5560 } 5561 5562 static int 5563 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5564 uint32_t did) 5565 { 5566 D_ID mydid, ndlpdid, matchdid; 5567 5568 if (did == Bcast_DID) 5569 return 0; 5570 5571 /* First check for Direct match */ 5572 if (ndlp->nlp_DID == did) 5573 return 1; 5574 5575 /* Next check for area/domain identically equals 0 match */ 5576 mydid.un.word = vport->fc_myDID; 5577 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5578 return 0; 5579 } 5580 5581 matchdid.un.word = did; 5582 ndlpdid.un.word = ndlp->nlp_DID; 5583 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5584 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5585 (mydid.un.b.area == matchdid.un.b.area)) { 5586 /* This code is supposed to match the ID 5587 * for a private loop device that is 5588 * connect to fl_port. But we need to 5589 * check that the port did not just go 5590 * from pt2pt to fabric or we could end 5591 * up matching ndlp->nlp_DID 000001 to 5592 * fabric DID 0x20101 5593 */ 5594 if ((ndlpdid.un.b.domain == 0) && 5595 (ndlpdid.un.b.area == 0)) { 5596 if (ndlpdid.un.b.id && 5597 vport->phba->fc_topology == 5598 LPFC_TOPOLOGY_LOOP) 5599 return 1; 5600 } 5601 return 0; 5602 } 5603 5604 matchdid.un.word = ndlp->nlp_DID; 5605 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5606 (mydid.un.b.area == ndlpdid.un.b.area)) { 5607 if ((matchdid.un.b.domain == 0) && 5608 (matchdid.un.b.area == 0)) { 5609 if (matchdid.un.b.id) 5610 return 1; 5611 } 5612 } 5613 } 5614 return 0; 5615 } 5616 5617 /* Search for a nodelist entry */ 5618 static struct lpfc_nodelist * 5619 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5620 { 5621 struct lpfc_nodelist *ndlp; 5622 uint32_t data1; 5623 5624 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5625 if (lpfc_matchdid(vport, ndlp, did)) { 5626 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5627 ((uint32_t)ndlp->nlp_xri << 16) | 5628 ((uint32_t)ndlp->nlp_type << 8) 5629 ); 5630 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5631 "0929 FIND node DID " 5632 "Data: x%px x%x x%x x%x x%x x%px\n", 5633 ndlp, ndlp->nlp_DID, 5634 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5635 ndlp->active_rrqs_xri_bitmap); 5636 return ndlp; 5637 } 5638 } 5639 5640 /* FIND node did <did> NOT FOUND */ 5641 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5642 "0932 FIND node did x%x NOT FOUND.\n", did); 5643 return NULL; 5644 } 5645 5646 struct lpfc_nodelist * 5647 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5648 { 5649 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5650 struct lpfc_nodelist *ndlp; 5651 unsigned long iflags; 5652 5653 spin_lock_irqsave(shost->host_lock, iflags); 5654 ndlp = __lpfc_findnode_did(vport, did); 5655 spin_unlock_irqrestore(shost->host_lock, iflags); 5656 return ndlp; 5657 } 5658 5659 struct lpfc_nodelist * 5660 lpfc_findnode_mapped(struct lpfc_vport *vport) 5661 { 5662 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5663 struct lpfc_nodelist *ndlp; 5664 uint32_t data1; 5665 unsigned long iflags; 5666 5667 spin_lock_irqsave(shost->host_lock, iflags); 5668 5669 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5670 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5671 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5672 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5673 ((uint32_t)ndlp->nlp_xri << 16) | 5674 ((uint32_t)ndlp->nlp_type << 8) | 5675 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5676 spin_unlock_irqrestore(shost->host_lock, iflags); 5677 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5678 "2025 FIND node DID " 5679 "Data: x%px x%x x%x x%x x%px\n", 5680 ndlp, ndlp->nlp_DID, 5681 ndlp->nlp_flag, data1, 5682 ndlp->active_rrqs_xri_bitmap); 5683 return ndlp; 5684 } 5685 } 5686 spin_unlock_irqrestore(shost->host_lock, iflags); 5687 5688 /* FIND node did <did> NOT FOUND */ 5689 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5690 "2026 FIND mapped did NOT FOUND.\n"); 5691 return NULL; 5692 } 5693 5694 struct lpfc_nodelist * 5695 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5696 { 5697 struct lpfc_nodelist *ndlp; 5698 5699 ndlp = lpfc_findnode_did(vport, did); 5700 if (!ndlp) { 5701 if (vport->phba->nvmet_support) 5702 return NULL; 5703 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 5704 lpfc_rscn_payload_check(vport, did) == 0) 5705 return NULL; 5706 ndlp = lpfc_nlp_init(vport, did); 5707 if (!ndlp) 5708 return NULL; 5709 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5710 5711 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5712 "6453 Setup New Node 2B_DISC x%x " 5713 "Data:x%x x%x x%x\n", 5714 ndlp->nlp_DID, ndlp->nlp_flag, 5715 ndlp->nlp_state, vport->fc_flag); 5716 5717 spin_lock_irq(&ndlp->lock); 5718 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5719 spin_unlock_irq(&ndlp->lock); 5720 return ndlp; 5721 } 5722 5723 /* The NVME Target does not want to actively manage an rport. 5724 * The goal is to allow the target to reset its state and clear 5725 * pending IO in preparation for the initiator to recover. 5726 */ 5727 if ((vport->fc_flag & FC_RSCN_MODE) && 5728 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 5729 if (lpfc_rscn_payload_check(vport, did)) { 5730 5731 /* Since this node is marked for discovery, 5732 * delay timeout is not needed. 5733 */ 5734 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5735 5736 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5737 "6455 Setup RSCN Node 2B_DISC x%x " 5738 "Data:x%x x%x x%x\n", 5739 ndlp->nlp_DID, ndlp->nlp_flag, 5740 ndlp->nlp_state, vport->fc_flag); 5741 5742 /* NVME Target mode waits until rport is known to be 5743 * impacted by the RSCN before it transitions. No 5744 * active management - just go to NPR provided the 5745 * node had a valid login. 5746 */ 5747 if (vport->phba->nvmet_support) 5748 return ndlp; 5749 5750 /* If we've already received a PLOGI from this NPort 5751 * we don't need to try to discover it again. 5752 */ 5753 if (ndlp->nlp_flag & NLP_RCV_PLOGI && 5754 !(ndlp->nlp_type & 5755 (NLP_FCP_TARGET | NLP_NVME_TARGET))) 5756 return NULL; 5757 5758 lpfc_disc_state_machine(vport, ndlp, NULL, 5759 NLP_EVT_DEVICE_RECOVERY); 5760 5761 spin_lock_irq(&ndlp->lock); 5762 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5763 spin_unlock_irq(&ndlp->lock); 5764 } else { 5765 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5766 "6456 Skip Setup RSCN Node x%x " 5767 "Data:x%x x%x x%x\n", 5768 ndlp->nlp_DID, ndlp->nlp_flag, 5769 ndlp->nlp_state, vport->fc_flag); 5770 ndlp = NULL; 5771 } 5772 } else { 5773 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5774 "6457 Setup Active Node 2B_DISC x%x " 5775 "Data:x%x x%x x%x\n", 5776 ndlp->nlp_DID, ndlp->nlp_flag, 5777 ndlp->nlp_state, vport->fc_flag); 5778 5779 /* If the initiator received a PLOGI from this NPort or if the 5780 * initiator is already in the process of discovery on it, 5781 * there's no need to try to discover it again. 5782 */ 5783 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5784 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5785 (!vport->phba->nvmet_support && 5786 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5787 return NULL; 5788 5789 if (vport->phba->nvmet_support) 5790 return ndlp; 5791 5792 /* Moving to NPR state clears unsolicited flags and 5793 * allows for rediscovery 5794 */ 5795 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5796 5797 spin_lock_irq(&ndlp->lock); 5798 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5799 spin_unlock_irq(&ndlp->lock); 5800 } 5801 return ndlp; 5802 } 5803 5804 /* Build a list of nodes to discover based on the loopmap */ 5805 void 5806 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5807 { 5808 struct lpfc_hba *phba = vport->phba; 5809 int j; 5810 uint32_t alpa, index; 5811 5812 if (!lpfc_is_link_up(phba)) 5813 return; 5814 5815 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5816 return; 5817 5818 /* Check for loop map present or not */ 5819 if (phba->alpa_map[0]) { 5820 for (j = 1; j <= phba->alpa_map[0]; j++) { 5821 alpa = phba->alpa_map[j]; 5822 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5823 continue; 5824 lpfc_setup_disc_node(vport, alpa); 5825 } 5826 } else { 5827 /* No alpamap, so try all alpa's */ 5828 for (j = 0; j < FC_MAXLOOP; j++) { 5829 /* If cfg_scan_down is set, start from highest 5830 * ALPA (0xef) to lowest (0x1). 5831 */ 5832 if (vport->cfg_scan_down) 5833 index = j; 5834 else 5835 index = FC_MAXLOOP - j - 1; 5836 alpa = lpfcAlpaArray[index]; 5837 if ((vport->fc_myDID & 0xff) == alpa) 5838 continue; 5839 lpfc_setup_disc_node(vport, alpa); 5840 } 5841 } 5842 return; 5843 } 5844 5845 /* SLI3 only */ 5846 void 5847 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5848 { 5849 LPFC_MBOXQ_t *mbox; 5850 struct lpfc_sli *psli = &phba->sli; 5851 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5852 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5853 int rc; 5854 5855 /* 5856 * if it's not a physical port or if we already send 5857 * clear_la then don't send it. 5858 */ 5859 if ((phba->link_state >= LPFC_CLEAR_LA) || 5860 (vport->port_type != LPFC_PHYSICAL_PORT) || 5861 (phba->sli_rev == LPFC_SLI_REV4)) 5862 return; 5863 5864 /* Link up discovery */ 5865 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5866 phba->link_state = LPFC_CLEAR_LA; 5867 lpfc_clear_la(phba, mbox); 5868 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5869 mbox->vport = vport; 5870 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5871 if (rc == MBX_NOT_FINISHED) { 5872 mempool_free(mbox, phba->mbox_mem_pool); 5873 lpfc_disc_flush_list(vport); 5874 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5875 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5876 phba->link_state = LPFC_HBA_ERROR; 5877 } 5878 } 5879 } 5880 5881 /* Reg_vpi to tell firmware to resume normal operations */ 5882 void 5883 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5884 { 5885 LPFC_MBOXQ_t *regvpimbox; 5886 5887 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5888 if (regvpimbox) { 5889 lpfc_reg_vpi(vport, regvpimbox); 5890 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5891 regvpimbox->vport = vport; 5892 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5893 == MBX_NOT_FINISHED) { 5894 mempool_free(regvpimbox, phba->mbox_mem_pool); 5895 } 5896 } 5897 } 5898 5899 /* Start Link up / RSCN discovery on NPR nodes */ 5900 void 5901 lpfc_disc_start(struct lpfc_vport *vport) 5902 { 5903 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5904 struct lpfc_hba *phba = vport->phba; 5905 uint32_t num_sent; 5906 uint32_t clear_la_pending; 5907 5908 if (!lpfc_is_link_up(phba)) { 5909 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5910 "3315 Link is not up %x\n", 5911 phba->link_state); 5912 return; 5913 } 5914 5915 if (phba->link_state == LPFC_CLEAR_LA) 5916 clear_la_pending = 1; 5917 else 5918 clear_la_pending = 0; 5919 5920 if (vport->port_state < LPFC_VPORT_READY) 5921 vport->port_state = LPFC_DISC_AUTH; 5922 5923 lpfc_set_disctmo(vport); 5924 5925 vport->fc_prevDID = vport->fc_myDID; 5926 vport->num_disc_nodes = 0; 5927 5928 /* Start Discovery state <hba_state> */ 5929 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5930 "0202 Start Discovery port state x%x " 5931 "flg x%x Data: x%x x%x x%x\n", 5932 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 5933 vport->fc_adisc_cnt, vport->fc_npr_cnt); 5934 5935 /* First do ADISCs - if any */ 5936 num_sent = lpfc_els_disc_adisc(vport); 5937 5938 if (num_sent) 5939 return; 5940 5941 /* Register the VPI for SLI3, NPIV only. */ 5942 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5943 !(vport->fc_flag & FC_PT2PT) && 5944 !(vport->fc_flag & FC_RSCN_MODE) && 5945 (phba->sli_rev < LPFC_SLI_REV4)) { 5946 lpfc_issue_clear_la(phba, vport); 5947 lpfc_issue_reg_vpi(phba, vport); 5948 return; 5949 } 5950 5951 /* 5952 * For SLI2, we need to set port_state to READY and continue 5953 * discovery. 5954 */ 5955 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5956 /* If we get here, there is nothing to ADISC */ 5957 lpfc_issue_clear_la(phba, vport); 5958 5959 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 5960 vport->num_disc_nodes = 0; 5961 /* go thru NPR nodes and issue ELS PLOGIs */ 5962 if (vport->fc_npr_cnt) 5963 lpfc_els_disc_plogi(vport); 5964 5965 if (!vport->num_disc_nodes) { 5966 spin_lock_irq(shost->host_lock); 5967 vport->fc_flag &= ~FC_NDISC_ACTIVE; 5968 spin_unlock_irq(shost->host_lock); 5969 lpfc_can_disctmo(vport); 5970 } 5971 } 5972 vport->port_state = LPFC_VPORT_READY; 5973 } else { 5974 /* Next do PLOGIs - if any */ 5975 num_sent = lpfc_els_disc_plogi(vport); 5976 5977 if (num_sent) 5978 return; 5979 5980 if (vport->fc_flag & FC_RSCN_MODE) { 5981 /* Check to see if more RSCNs came in while we 5982 * were processing this one. 5983 */ 5984 if ((vport->fc_rscn_id_cnt == 0) && 5985 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 5986 spin_lock_irq(shost->host_lock); 5987 vport->fc_flag &= ~FC_RSCN_MODE; 5988 spin_unlock_irq(shost->host_lock); 5989 lpfc_can_disctmo(vport); 5990 } else 5991 lpfc_els_handle_rscn(vport); 5992 } 5993 } 5994 return; 5995 } 5996 5997 /* 5998 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 5999 * ring the match the sppecified nodelist. 6000 */ 6001 static void 6002 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 6003 { 6004 LIST_HEAD(completions); 6005 struct lpfc_iocbq *iocb, *next_iocb; 6006 struct lpfc_sli_ring *pring; 6007 u32 ulp_command; 6008 6009 pring = lpfc_phba_elsring(phba); 6010 if (unlikely(!pring)) 6011 return; 6012 6013 /* Error matching iocb on txq or txcmplq 6014 * First check the txq. 6015 */ 6016 spin_lock_irq(&phba->hbalock); 6017 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6018 if (iocb->ndlp != ndlp) 6019 continue; 6020 6021 ulp_command = get_job_cmnd(phba, iocb); 6022 6023 if (ulp_command == CMD_ELS_REQUEST64_CR || 6024 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6025 6026 list_move_tail(&iocb->list, &completions); 6027 } 6028 } 6029 6030 /* Next check the txcmplq */ 6031 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6032 if (iocb->ndlp != ndlp) 6033 continue; 6034 6035 ulp_command = get_job_cmnd(phba, iocb); 6036 6037 if (ulp_command == CMD_ELS_REQUEST64_CR || 6038 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6039 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6040 } 6041 } 6042 spin_unlock_irq(&phba->hbalock); 6043 6044 /* Make sure HBA is alive */ 6045 lpfc_issue_hb_tmo(phba); 6046 6047 /* Cancel all the IOCBs from the completions list */ 6048 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6049 IOERR_SLI_ABORTED); 6050 } 6051 6052 static void 6053 lpfc_disc_flush_list(struct lpfc_vport *vport) 6054 { 6055 struct lpfc_nodelist *ndlp, *next_ndlp; 6056 struct lpfc_hba *phba = vport->phba; 6057 6058 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 6059 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6060 nlp_listp) { 6061 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6062 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6063 lpfc_free_tx(phba, ndlp); 6064 } 6065 } 6066 } 6067 } 6068 6069 /* 6070 * lpfc_notify_xport_npr - notifies xport of node disappearance 6071 * @vport: Pointer to Virtual Port object. 6072 * 6073 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6074 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6075 * and transport notified that the node is gone. 6076 * Return Code: 6077 * none 6078 */ 6079 static void 6080 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6081 { 6082 struct lpfc_nodelist *ndlp, *next_ndlp; 6083 6084 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6085 nlp_listp) { 6086 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6087 } 6088 } 6089 void 6090 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6091 { 6092 lpfc_els_flush_rscn(vport); 6093 lpfc_els_flush_cmd(vport); 6094 lpfc_disc_flush_list(vport); 6095 if (pci_channel_offline(vport->phba->pcidev)) 6096 lpfc_notify_xport_npr(vport); 6097 } 6098 6099 /*****************************************************************************/ 6100 /* 6101 * NAME: lpfc_disc_timeout 6102 * 6103 * FUNCTION: Fibre Channel driver discovery timeout routine. 6104 * 6105 * EXECUTION ENVIRONMENT: interrupt only 6106 * 6107 * CALLED FROM: 6108 * Timer function 6109 * 6110 * RETURNS: 6111 * none 6112 */ 6113 /*****************************************************************************/ 6114 void 6115 lpfc_disc_timeout(struct timer_list *t) 6116 { 6117 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6118 struct lpfc_hba *phba = vport->phba; 6119 uint32_t tmo_posted; 6120 unsigned long flags = 0; 6121 6122 if (unlikely(!phba)) 6123 return; 6124 6125 spin_lock_irqsave(&vport->work_port_lock, flags); 6126 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6127 if (!tmo_posted) 6128 vport->work_port_events |= WORKER_DISC_TMO; 6129 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6130 6131 if (!tmo_posted) 6132 lpfc_worker_wake_up(phba); 6133 return; 6134 } 6135 6136 static void 6137 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6138 { 6139 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6140 struct lpfc_hba *phba = vport->phba; 6141 struct lpfc_sli *psli = &phba->sli; 6142 struct lpfc_nodelist *ndlp, *next_ndlp; 6143 LPFC_MBOXQ_t *initlinkmbox; 6144 int rc, clrlaerr = 0; 6145 6146 if (!(vport->fc_flag & FC_DISC_TMO)) 6147 return; 6148 6149 spin_lock_irq(shost->host_lock); 6150 vport->fc_flag &= ~FC_DISC_TMO; 6151 spin_unlock_irq(shost->host_lock); 6152 6153 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6154 "disc timeout: state:x%x rtry:x%x flg:x%x", 6155 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6156 6157 switch (vport->port_state) { 6158 6159 case LPFC_LOCAL_CFG_LINK: 6160 /* 6161 * port_state is identically LPFC_LOCAL_CFG_LINK while 6162 * waiting for FAN timeout 6163 */ 6164 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6165 "0221 FAN timeout\n"); 6166 6167 /* Start discovery by sending FLOGI, clean up old rpis */ 6168 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6169 nlp_listp) { 6170 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6171 continue; 6172 if (ndlp->nlp_type & NLP_FABRIC) { 6173 /* Clean up the ndlp on Fabric connections */ 6174 lpfc_drop_node(vport, ndlp); 6175 6176 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6177 /* Fail outstanding IO now since device 6178 * is marked for PLOGI. 6179 */ 6180 lpfc_unreg_rpi(vport, ndlp); 6181 } 6182 } 6183 if (vport->port_state != LPFC_FLOGI) { 6184 if (phba->sli_rev <= LPFC_SLI_REV3) 6185 lpfc_initial_flogi(vport); 6186 else 6187 lpfc_issue_init_vfi(vport); 6188 return; 6189 } 6190 break; 6191 6192 case LPFC_FDISC: 6193 case LPFC_FLOGI: 6194 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6195 /* Initial FLOGI timeout */ 6196 lpfc_printf_vlog(vport, KERN_ERR, 6197 LOG_TRACE_EVENT, 6198 "0222 Initial %s timeout\n", 6199 vport->vpi ? "FDISC" : "FLOGI"); 6200 6201 /* Assume no Fabric and go on with discovery. 6202 * Check for outstanding ELS FLOGI to abort. 6203 */ 6204 6205 /* FLOGI failed, so just use loop map to make discovery list */ 6206 lpfc_disc_list_loopmap(vport); 6207 6208 /* Start discovery */ 6209 lpfc_disc_start(vport); 6210 break; 6211 6212 case LPFC_FABRIC_CFG_LINK: 6213 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6214 NameServer login */ 6215 lpfc_printf_vlog(vport, KERN_ERR, 6216 LOG_TRACE_EVENT, 6217 "0223 Timeout while waiting for " 6218 "NameServer login\n"); 6219 /* Next look for NameServer ndlp */ 6220 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6221 if (ndlp) 6222 lpfc_els_abort(phba, ndlp); 6223 6224 /* ReStart discovery */ 6225 goto restart_disc; 6226 6227 case LPFC_NS_QRY: 6228 /* Check for wait for NameServer Rsp timeout */ 6229 lpfc_printf_vlog(vport, KERN_ERR, 6230 LOG_TRACE_EVENT, 6231 "0224 NameServer Query timeout " 6232 "Data: x%x x%x\n", 6233 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6234 6235 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6236 /* Try it one more time */ 6237 vport->fc_ns_retry++; 6238 vport->gidft_inp = 0; 6239 rc = lpfc_issue_gidft(vport); 6240 if (rc == 0) 6241 break; 6242 } 6243 vport->fc_ns_retry = 0; 6244 6245 restart_disc: 6246 /* 6247 * Discovery is over. 6248 * set port_state to PORT_READY if SLI2. 6249 * cmpl_reg_vpi will set port_state to READY for SLI3. 6250 */ 6251 if (phba->sli_rev < LPFC_SLI_REV4) { 6252 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6253 lpfc_issue_reg_vpi(phba, vport); 6254 else { 6255 lpfc_issue_clear_la(phba, vport); 6256 vport->port_state = LPFC_VPORT_READY; 6257 } 6258 } 6259 6260 /* Setup and issue mailbox INITIALIZE LINK command */ 6261 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6262 if (!initlinkmbox) { 6263 lpfc_printf_vlog(vport, KERN_ERR, 6264 LOG_TRACE_EVENT, 6265 "0206 Device Discovery " 6266 "completion error\n"); 6267 phba->link_state = LPFC_HBA_ERROR; 6268 break; 6269 } 6270 6271 lpfc_linkdown(phba); 6272 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6273 phba->cfg_link_speed); 6274 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6275 initlinkmbox->vport = vport; 6276 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6277 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6278 lpfc_set_loopback_flag(phba); 6279 if (rc == MBX_NOT_FINISHED) 6280 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6281 6282 break; 6283 6284 case LPFC_DISC_AUTH: 6285 /* Node Authentication timeout */ 6286 lpfc_printf_vlog(vport, KERN_ERR, 6287 LOG_TRACE_EVENT, 6288 "0227 Node Authentication timeout\n"); 6289 lpfc_disc_flush_list(vport); 6290 6291 /* 6292 * set port_state to PORT_READY if SLI2. 6293 * cmpl_reg_vpi will set port_state to READY for SLI3. 6294 */ 6295 if (phba->sli_rev < LPFC_SLI_REV4) { 6296 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6297 lpfc_issue_reg_vpi(phba, vport); 6298 else { /* NPIV Not enabled */ 6299 lpfc_issue_clear_la(phba, vport); 6300 vport->port_state = LPFC_VPORT_READY; 6301 } 6302 } 6303 break; 6304 6305 case LPFC_VPORT_READY: 6306 if (vport->fc_flag & FC_RSCN_MODE) { 6307 lpfc_printf_vlog(vport, KERN_ERR, 6308 LOG_TRACE_EVENT, 6309 "0231 RSCN timeout Data: x%x " 6310 "x%x x%x x%x\n", 6311 vport->fc_ns_retry, LPFC_MAX_NS_RETRY, 6312 vport->port_state, vport->gidft_inp); 6313 6314 /* Cleanup any outstanding ELS commands */ 6315 lpfc_els_flush_cmd(vport); 6316 6317 lpfc_els_flush_rscn(vport); 6318 lpfc_disc_flush_list(vport); 6319 } 6320 break; 6321 6322 default: 6323 lpfc_printf_vlog(vport, KERN_ERR, 6324 LOG_TRACE_EVENT, 6325 "0273 Unexpected discovery timeout, " 6326 "vport State x%x\n", vport->port_state); 6327 break; 6328 } 6329 6330 switch (phba->link_state) { 6331 case LPFC_CLEAR_LA: 6332 /* CLEAR LA timeout */ 6333 lpfc_printf_vlog(vport, KERN_ERR, 6334 LOG_TRACE_EVENT, 6335 "0228 CLEAR LA timeout\n"); 6336 clrlaerr = 1; 6337 break; 6338 6339 case LPFC_LINK_UP: 6340 lpfc_issue_clear_la(phba, vport); 6341 fallthrough; 6342 case LPFC_LINK_UNKNOWN: 6343 case LPFC_WARM_START: 6344 case LPFC_INIT_START: 6345 case LPFC_INIT_MBX_CMDS: 6346 case LPFC_LINK_DOWN: 6347 case LPFC_HBA_ERROR: 6348 lpfc_printf_vlog(vport, KERN_ERR, 6349 LOG_TRACE_EVENT, 6350 "0230 Unexpected timeout, hba link " 6351 "state x%x\n", phba->link_state); 6352 clrlaerr = 1; 6353 break; 6354 6355 case LPFC_HBA_READY: 6356 break; 6357 } 6358 6359 if (clrlaerr) { 6360 lpfc_disc_flush_list(vport); 6361 if (phba->sli_rev != LPFC_SLI_REV4) { 6362 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6363 ~LPFC_STOP_IOCB_EVENT; 6364 psli->sli3_ring[LPFC_FCP_RING].flag &= 6365 ~LPFC_STOP_IOCB_EVENT; 6366 } 6367 vport->port_state = LPFC_VPORT_READY; 6368 } 6369 return; 6370 } 6371 6372 /* 6373 * This routine handles processing a NameServer REG_LOGIN mailbox 6374 * command upon completion. It is setup in the LPFC_MBOXQ 6375 * as the completion routine when the command is 6376 * handed off to the SLI layer. 6377 */ 6378 void 6379 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6380 { 6381 MAILBOX_t *mb = &pmb->u.mb; 6382 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6383 struct lpfc_vport *vport = pmb->vport; 6384 6385 pmb->ctx_ndlp = NULL; 6386 6387 if (phba->sli_rev < LPFC_SLI_REV4) 6388 ndlp->nlp_rpi = mb->un.varWords[0]; 6389 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6390 ndlp->nlp_type |= NLP_FABRIC; 6391 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6392 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6393 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6394 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6395 kref_read(&ndlp->kref), 6396 ndlp); 6397 /* 6398 * Start issuing Fabric-Device Management Interface (FDMI) command to 6399 * 0xfffffa (FDMI well known port). 6400 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6401 * DPRT -> RPRT (vports) 6402 */ 6403 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6404 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6405 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6406 } else { 6407 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6408 } 6409 6410 6411 /* decrement the node reference count held for this callback 6412 * function. 6413 */ 6414 lpfc_nlp_put(ndlp); 6415 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 6416 return; 6417 } 6418 6419 static int 6420 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6421 { 6422 uint16_t *rpi = param; 6423 6424 return ndlp->nlp_rpi == *rpi; 6425 } 6426 6427 static int 6428 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6429 { 6430 return memcmp(&ndlp->nlp_portname, param, 6431 sizeof(ndlp->nlp_portname)) == 0; 6432 } 6433 6434 static struct lpfc_nodelist * 6435 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6436 { 6437 struct lpfc_nodelist *ndlp; 6438 6439 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6440 if (filter(ndlp, param)) { 6441 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6442 "3185 FIND node filter %ps DID " 6443 "ndlp x%px did x%x flg x%x st x%x " 6444 "xri x%x type x%x rpi x%x\n", 6445 filter, ndlp, ndlp->nlp_DID, 6446 ndlp->nlp_flag, ndlp->nlp_state, 6447 ndlp->nlp_xri, ndlp->nlp_type, 6448 ndlp->nlp_rpi); 6449 return ndlp; 6450 } 6451 } 6452 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6453 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6454 return NULL; 6455 } 6456 6457 /* 6458 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6459 * returns the node list element pointer else return NULL. 6460 */ 6461 struct lpfc_nodelist * 6462 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6463 { 6464 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6465 } 6466 6467 /* 6468 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6469 * returns the node element list pointer else return NULL. 6470 */ 6471 struct lpfc_nodelist * 6472 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6473 { 6474 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6475 struct lpfc_nodelist *ndlp; 6476 6477 spin_lock_irq(shost->host_lock); 6478 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6479 spin_unlock_irq(shost->host_lock); 6480 return ndlp; 6481 } 6482 6483 /* 6484 * This routine looks up the ndlp lists for the given RPI. If the rpi 6485 * is found, the routine returns the node element list pointer else 6486 * return NULL. 6487 */ 6488 struct lpfc_nodelist * 6489 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6490 { 6491 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6492 struct lpfc_nodelist *ndlp; 6493 unsigned long flags; 6494 6495 spin_lock_irqsave(shost->host_lock, flags); 6496 ndlp = __lpfc_findnode_rpi(vport, rpi); 6497 spin_unlock_irqrestore(shost->host_lock, flags); 6498 return ndlp; 6499 } 6500 6501 /** 6502 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6503 * @phba: pointer to lpfc hba data structure. 6504 * @vpi: the physical host virtual N_Port identifier. 6505 * 6506 * This routine finds a vport on a HBA (referred by @phba) through a 6507 * @vpi. The function walks the HBA's vport list and returns the address 6508 * of the vport with the matching @vpi. 6509 * 6510 * Return code 6511 * NULL - No vport with the matching @vpi found 6512 * Otherwise - Address to the vport with the matching @vpi. 6513 **/ 6514 struct lpfc_vport * 6515 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6516 { 6517 struct lpfc_vport *vport; 6518 unsigned long flags; 6519 int i = 0; 6520 6521 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6522 if (vpi > 0) { 6523 /* 6524 * Translate the physical vpi to the logical vpi. The 6525 * vport stores the logical vpi. 6526 */ 6527 for (i = 0; i <= phba->max_vpi; i++) { 6528 if (vpi == phba->vpi_ids[i]) 6529 break; 6530 } 6531 6532 if (i > phba->max_vpi) { 6533 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6534 "2936 Could not find Vport mapped " 6535 "to vpi %d\n", vpi); 6536 return NULL; 6537 } 6538 } 6539 6540 spin_lock_irqsave(&phba->port_list_lock, flags); 6541 list_for_each_entry(vport, &phba->port_list, listentry) { 6542 if (vport->vpi == i) { 6543 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6544 return vport; 6545 } 6546 } 6547 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6548 return NULL; 6549 } 6550 6551 struct lpfc_nodelist * 6552 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6553 { 6554 struct lpfc_nodelist *ndlp; 6555 int rpi = LPFC_RPI_ALLOC_ERROR; 6556 6557 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6558 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6559 if (rpi == LPFC_RPI_ALLOC_ERROR) 6560 return NULL; 6561 } 6562 6563 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6564 if (!ndlp) { 6565 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6566 lpfc_sli4_free_rpi(vport->phba, rpi); 6567 return NULL; 6568 } 6569 6570 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6571 6572 spin_lock_init(&ndlp->lock); 6573 6574 lpfc_initialize_node(vport, ndlp, did); 6575 INIT_LIST_HEAD(&ndlp->nlp_listp); 6576 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6577 ndlp->nlp_rpi = rpi; 6578 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6579 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6580 "flg:x%x refcnt:%d\n", 6581 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6582 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6583 6584 ndlp->active_rrqs_xri_bitmap = 6585 mempool_alloc(vport->phba->active_rrq_pool, 6586 GFP_KERNEL); 6587 if (ndlp->active_rrqs_xri_bitmap) 6588 memset(ndlp->active_rrqs_xri_bitmap, 0, 6589 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6590 } 6591 6592 6593 6594 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6595 "node init: did:x%x", 6596 ndlp->nlp_DID, 0, 0); 6597 6598 return ndlp; 6599 } 6600 6601 /* This routine releases all resources associated with a specifc NPort's ndlp 6602 * and mempool_free's the nodelist. 6603 */ 6604 static void 6605 lpfc_nlp_release(struct kref *kref) 6606 { 6607 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6608 kref); 6609 struct lpfc_vport *vport = ndlp->vport; 6610 6611 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6612 "node release: did:x%x flg:x%x type:x%x", 6613 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6614 6615 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6616 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6617 __func__, ndlp, ndlp->nlp_DID, 6618 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6619 6620 /* remove ndlp from action. */ 6621 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6622 lpfc_cleanup_node(vport, ndlp); 6623 6624 /* Not all ELS transactions have registered the RPI with the port. 6625 * In these cases the rpi usage is temporary and the node is 6626 * released when the WQE is completed. Catch this case to free the 6627 * RPI to the pool. Because this node is in the release path, a lock 6628 * is unnecessary. All references are gone and the node has been 6629 * dequeued. 6630 */ 6631 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6632 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6633 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6634 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6635 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6636 } 6637 } 6638 6639 /* The node is not freed back to memory, it is released to a pool so 6640 * the node fields need to be cleaned up. 6641 */ 6642 ndlp->vport = NULL; 6643 ndlp->nlp_state = NLP_STE_FREED_NODE; 6644 ndlp->nlp_flag = 0; 6645 ndlp->fc4_xpt_flags = 0; 6646 6647 /* free ndlp memory for final ndlp release */ 6648 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6649 mempool_free(ndlp->active_rrqs_xri_bitmap, 6650 ndlp->phba->active_rrq_pool); 6651 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6652 } 6653 6654 /* This routine bumps the reference count for a ndlp structure to ensure 6655 * that one discovery thread won't free a ndlp while another discovery thread 6656 * is using it. 6657 */ 6658 struct lpfc_nodelist * 6659 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6660 { 6661 unsigned long flags; 6662 6663 if (ndlp) { 6664 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6665 "node get: did:x%x flg:x%x refcnt:x%x", 6666 ndlp->nlp_DID, ndlp->nlp_flag, 6667 kref_read(&ndlp->kref)); 6668 6669 /* The check of ndlp usage to prevent incrementing the 6670 * ndlp reference count that is in the process of being 6671 * released. 6672 */ 6673 spin_lock_irqsave(&ndlp->lock, flags); 6674 if (!kref_get_unless_zero(&ndlp->kref)) { 6675 spin_unlock_irqrestore(&ndlp->lock, flags); 6676 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6677 "0276 %s: ndlp:x%px refcnt:%d\n", 6678 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6679 return NULL; 6680 } 6681 spin_unlock_irqrestore(&ndlp->lock, flags); 6682 } else { 6683 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6684 } 6685 6686 return ndlp; 6687 } 6688 6689 /* This routine decrements the reference count for a ndlp structure. If the 6690 * count goes to 0, this indicates the associated nodelist should be freed. 6691 */ 6692 int 6693 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6694 { 6695 if (ndlp) { 6696 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6697 "node put: did:x%x flg:x%x refcnt:x%x", 6698 ndlp->nlp_DID, ndlp->nlp_flag, 6699 kref_read(&ndlp->kref)); 6700 } else { 6701 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6702 } 6703 6704 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6705 } 6706 6707 /* This routine free's the specified nodelist if it is not in use 6708 * by any other discovery thread. This routine returns 1 if the 6709 * ndlp has been freed. A return value of 0 indicates the ndlp is 6710 * not yet been released. 6711 */ 6712 int 6713 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 6714 { 6715 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6716 "node not used: did:x%x flg:x%x refcnt:x%x", 6717 ndlp->nlp_DID, ndlp->nlp_flag, 6718 kref_read(&ndlp->kref)); 6719 6720 if (kref_read(&ndlp->kref) == 1) 6721 if (lpfc_nlp_put(ndlp)) 6722 return 1; 6723 return 0; 6724 } 6725 6726 /** 6727 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6728 * @phba: Pointer to hba context object. 6729 * 6730 * This function iterate through all FC nodes associated 6731 * will all vports to check if there is any node with 6732 * fc_rports associated with it. If there is an fc_rport 6733 * associated with the node, then the node is either in 6734 * discovered state or its devloss_timer is pending. 6735 */ 6736 static int 6737 lpfc_fcf_inuse(struct lpfc_hba *phba) 6738 { 6739 struct lpfc_vport **vports; 6740 int i, ret = 0; 6741 struct lpfc_nodelist *ndlp; 6742 struct Scsi_Host *shost; 6743 6744 vports = lpfc_create_vport_work_array(phba); 6745 6746 /* If driver cannot allocate memory, indicate fcf is in use */ 6747 if (!vports) 6748 return 1; 6749 6750 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6751 shost = lpfc_shost_from_vport(vports[i]); 6752 spin_lock_irq(shost->host_lock); 6753 /* 6754 * IF the CVL_RCVD bit is not set then we have sent the 6755 * flogi. 6756 * If dev_loss fires while we are waiting we do not want to 6757 * unreg the fcf. 6758 */ 6759 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 6760 spin_unlock_irq(shost->host_lock); 6761 ret = 1; 6762 goto out; 6763 } 6764 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6765 if (ndlp->rport && 6766 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6767 ret = 1; 6768 spin_unlock_irq(shost->host_lock); 6769 goto out; 6770 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6771 ret = 1; 6772 lpfc_printf_log(phba, KERN_INFO, 6773 LOG_NODE | LOG_DISCOVERY, 6774 "2624 RPI %x DID %x flag %x " 6775 "still logged in\n", 6776 ndlp->nlp_rpi, ndlp->nlp_DID, 6777 ndlp->nlp_flag); 6778 } 6779 } 6780 spin_unlock_irq(shost->host_lock); 6781 } 6782 out: 6783 lpfc_destroy_vport_work_array(phba, vports); 6784 return ret; 6785 } 6786 6787 /** 6788 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6789 * @phba: Pointer to hba context object. 6790 * @mboxq: Pointer to mailbox object. 6791 * 6792 * This function frees memory associated with the mailbox command. 6793 */ 6794 void 6795 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6796 { 6797 struct lpfc_vport *vport = mboxq->vport; 6798 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6799 6800 if (mboxq->u.mb.mbxStatus) { 6801 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6802 "2555 UNREG_VFI mbxStatus error x%x " 6803 "HBA state x%x\n", 6804 mboxq->u.mb.mbxStatus, vport->port_state); 6805 } 6806 spin_lock_irq(shost->host_lock); 6807 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 6808 spin_unlock_irq(shost->host_lock); 6809 mempool_free(mboxq, phba->mbox_mem_pool); 6810 return; 6811 } 6812 6813 /** 6814 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6815 * @phba: Pointer to hba context object. 6816 * @mboxq: Pointer to mailbox object. 6817 * 6818 * This function frees memory associated with the mailbox command. 6819 */ 6820 static void 6821 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6822 { 6823 struct lpfc_vport *vport = mboxq->vport; 6824 6825 if (mboxq->u.mb.mbxStatus) { 6826 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6827 "2550 UNREG_FCFI mbxStatus error x%x " 6828 "HBA state x%x\n", 6829 mboxq->u.mb.mbxStatus, vport->port_state); 6830 } 6831 mempool_free(mboxq, phba->mbox_mem_pool); 6832 return; 6833 } 6834 6835 /** 6836 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6837 * @phba: Pointer to hba context object. 6838 * 6839 * This function prepare the HBA for unregistering the currently registered 6840 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6841 * VFIs. 6842 */ 6843 int 6844 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6845 { 6846 struct lpfc_vport **vports; 6847 struct lpfc_nodelist *ndlp; 6848 struct Scsi_Host *shost; 6849 int i = 0, rc; 6850 6851 /* Unregister RPIs */ 6852 if (lpfc_fcf_inuse(phba)) 6853 lpfc_unreg_hba_rpis(phba); 6854 6855 /* At this point, all discovery is aborted */ 6856 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6857 6858 /* Unregister VPIs */ 6859 vports = lpfc_create_vport_work_array(phba); 6860 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6861 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6862 /* Stop FLOGI/FDISC retries */ 6863 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6864 if (ndlp) 6865 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6866 lpfc_cleanup_pending_mbox(vports[i]); 6867 if (phba->sli_rev == LPFC_SLI_REV4) 6868 lpfc_sli4_unreg_all_rpis(vports[i]); 6869 lpfc_mbx_unreg_vpi(vports[i]); 6870 shost = lpfc_shost_from_vport(vports[i]); 6871 spin_lock_irq(shost->host_lock); 6872 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6873 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6874 spin_unlock_irq(shost->host_lock); 6875 } 6876 lpfc_destroy_vport_work_array(phba, vports); 6877 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6878 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6879 if (ndlp) 6880 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6881 lpfc_cleanup_pending_mbox(phba->pport); 6882 if (phba->sli_rev == LPFC_SLI_REV4) 6883 lpfc_sli4_unreg_all_rpis(phba->pport); 6884 lpfc_mbx_unreg_vpi(phba->pport); 6885 shost = lpfc_shost_from_vport(phba->pport); 6886 spin_lock_irq(shost->host_lock); 6887 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6888 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6889 spin_unlock_irq(shost->host_lock); 6890 } 6891 6892 /* Cleanup any outstanding ELS commands */ 6893 lpfc_els_flush_all_cmd(phba); 6894 6895 /* Unregister the physical port VFI */ 6896 rc = lpfc_issue_unreg_vfi(phba->pport); 6897 return rc; 6898 } 6899 6900 /** 6901 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6902 * @phba: Pointer to hba context object. 6903 * 6904 * This function issues synchronous unregister FCF mailbox command to HBA to 6905 * unregister the currently registered FCF record. The driver does not reset 6906 * the driver FCF usage state flags. 6907 * 6908 * Return 0 if successfully issued, none-zero otherwise. 6909 */ 6910 int 6911 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6912 { 6913 LPFC_MBOXQ_t *mbox; 6914 int rc; 6915 6916 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6917 if (!mbox) { 6918 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6919 "2551 UNREG_FCFI mbox allocation failed" 6920 "HBA state x%x\n", phba->pport->port_state); 6921 return -ENOMEM; 6922 } 6923 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6924 mbox->vport = phba->pport; 6925 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6926 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6927 6928 if (rc == MBX_NOT_FINISHED) { 6929 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6930 "2552 Unregister FCFI command failed rc x%x " 6931 "HBA state x%x\n", 6932 rc, phba->pport->port_state); 6933 return -EINVAL; 6934 } 6935 return 0; 6936 } 6937 6938 /** 6939 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6940 * @phba: Pointer to hba context object. 6941 * 6942 * This function unregisters the currently reigstered FCF. This function 6943 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6944 */ 6945 void 6946 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6947 { 6948 int rc; 6949 6950 /* Preparation for unregistering fcf */ 6951 rc = lpfc_unregister_fcf_prep(phba); 6952 if (rc) { 6953 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6954 "2748 Failed to prepare for unregistering " 6955 "HBA's FCF record: rc=%d\n", rc); 6956 return; 6957 } 6958 6959 /* Now, unregister FCF record and reset HBA FCF state */ 6960 rc = lpfc_sli4_unregister_fcf(phba); 6961 if (rc) 6962 return; 6963 /* Reset HBA FCF states after successful unregister FCF */ 6964 phba->fcf.fcf_flag = 0; 6965 phba->fcf.current_rec.flag = 0; 6966 6967 /* 6968 * If driver is not unloading, check if there is any other 6969 * FCF record that can be used for discovery. 6970 */ 6971 if ((phba->pport->load_flag & FC_UNLOADING) || 6972 (phba->link_state < LPFC_LINK_UP)) 6973 return; 6974 6975 /* This is considered as the initial FCF discovery scan */ 6976 spin_lock_irq(&phba->hbalock); 6977 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6978 spin_unlock_irq(&phba->hbalock); 6979 6980 /* Reset FCF roundrobin bmask for new discovery */ 6981 lpfc_sli4_clear_fcf_rr_bmask(phba); 6982 6983 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6984 6985 if (rc) { 6986 spin_lock_irq(&phba->hbalock); 6987 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6988 spin_unlock_irq(&phba->hbalock); 6989 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6990 "2553 lpfc_unregister_unused_fcf failed " 6991 "to read FCF record HBA state x%x\n", 6992 phba->pport->port_state); 6993 } 6994 } 6995 6996 /** 6997 * lpfc_unregister_fcf - Unregister the currently registered fcf record 6998 * @phba: Pointer to hba context object. 6999 * 7000 * This function just unregisters the currently reigstered FCF. It does not 7001 * try to find another FCF for discovery. 7002 */ 7003 void 7004 lpfc_unregister_fcf(struct lpfc_hba *phba) 7005 { 7006 int rc; 7007 7008 /* Preparation for unregistering fcf */ 7009 rc = lpfc_unregister_fcf_prep(phba); 7010 if (rc) { 7011 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7012 "2749 Failed to prepare for unregistering " 7013 "HBA's FCF record: rc=%d\n", rc); 7014 return; 7015 } 7016 7017 /* Now, unregister FCF record and reset HBA FCF state */ 7018 rc = lpfc_sli4_unregister_fcf(phba); 7019 if (rc) 7020 return; 7021 /* Set proper HBA FCF states after successful unregister FCF */ 7022 spin_lock_irq(&phba->hbalock); 7023 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 7024 spin_unlock_irq(&phba->hbalock); 7025 } 7026 7027 /** 7028 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 7029 * @phba: Pointer to hba context object. 7030 * 7031 * This function check if there are any connected remote port for the FCF and 7032 * if all the devices are disconnected, this function unregister FCFI. 7033 * This function also tries to use another FCF for discovery. 7034 */ 7035 void 7036 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 7037 { 7038 /* 7039 * If HBA is not running in FIP mode, if HBA does not support 7040 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7041 * registered, do nothing. 7042 */ 7043 spin_lock_irq(&phba->hbalock); 7044 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7045 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7046 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7047 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7048 (phba->pport->port_state == LPFC_FLOGI)) { 7049 spin_unlock_irq(&phba->hbalock); 7050 return; 7051 } 7052 spin_unlock_irq(&phba->hbalock); 7053 7054 if (lpfc_fcf_inuse(phba)) 7055 return; 7056 7057 lpfc_unregister_fcf_rescan(phba); 7058 } 7059 7060 /** 7061 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7062 * @phba: Pointer to hba context object. 7063 * @buff: Buffer containing the FCF connection table as in the config 7064 * region. 7065 * This function create driver data structure for the FCF connection 7066 * record table read from config region 23. 7067 */ 7068 static void 7069 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7070 uint8_t *buff) 7071 { 7072 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7073 struct lpfc_fcf_conn_hdr *conn_hdr; 7074 struct lpfc_fcf_conn_rec *conn_rec; 7075 uint32_t record_count; 7076 int i; 7077 7078 /* Free the current connect table */ 7079 list_for_each_entry_safe(conn_entry, next_conn_entry, 7080 &phba->fcf_conn_rec_list, list) { 7081 list_del_init(&conn_entry->list); 7082 kfree(conn_entry); 7083 } 7084 7085 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7086 record_count = conn_hdr->length * sizeof(uint32_t)/ 7087 sizeof(struct lpfc_fcf_conn_rec); 7088 7089 conn_rec = (struct lpfc_fcf_conn_rec *) 7090 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7091 7092 for (i = 0; i < record_count; i++) { 7093 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7094 continue; 7095 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7096 GFP_KERNEL); 7097 if (!conn_entry) { 7098 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7099 "2566 Failed to allocate connection" 7100 " table entry\n"); 7101 return; 7102 } 7103 7104 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7105 sizeof(struct lpfc_fcf_conn_rec)); 7106 list_add_tail(&conn_entry->list, 7107 &phba->fcf_conn_rec_list); 7108 } 7109 7110 if (!list_empty(&phba->fcf_conn_rec_list)) { 7111 i = 0; 7112 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7113 list) { 7114 conn_rec = &conn_entry->conn_rec; 7115 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7116 "3345 FCF connection list rec[%02d]: " 7117 "flags:x%04x, vtag:x%04x, " 7118 "fabric_name:x%02x:%02x:%02x:%02x:" 7119 "%02x:%02x:%02x:%02x, " 7120 "switch_name:x%02x:%02x:%02x:%02x:" 7121 "%02x:%02x:%02x:%02x\n", i++, 7122 conn_rec->flags, conn_rec->vlan_tag, 7123 conn_rec->fabric_name[0], 7124 conn_rec->fabric_name[1], 7125 conn_rec->fabric_name[2], 7126 conn_rec->fabric_name[3], 7127 conn_rec->fabric_name[4], 7128 conn_rec->fabric_name[5], 7129 conn_rec->fabric_name[6], 7130 conn_rec->fabric_name[7], 7131 conn_rec->switch_name[0], 7132 conn_rec->switch_name[1], 7133 conn_rec->switch_name[2], 7134 conn_rec->switch_name[3], 7135 conn_rec->switch_name[4], 7136 conn_rec->switch_name[5], 7137 conn_rec->switch_name[6], 7138 conn_rec->switch_name[7]); 7139 } 7140 } 7141 } 7142 7143 /** 7144 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7145 * @phba: Pointer to hba context object. 7146 * @buff: Buffer containing the FCoE parameter data structure. 7147 * 7148 * This function update driver data structure with config 7149 * parameters read from config region 23. 7150 */ 7151 static void 7152 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7153 uint8_t *buff) 7154 { 7155 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7156 struct lpfc_fcoe_params *fcoe_param; 7157 7158 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7159 buff; 7160 fcoe_param = (struct lpfc_fcoe_params *) 7161 (buff + sizeof(struct lpfc_fip_param_hdr)); 7162 7163 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7164 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7165 return; 7166 7167 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7168 phba->valid_vlan = 1; 7169 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7170 0xFFF; 7171 } 7172 7173 phba->fc_map[0] = fcoe_param->fc_map[0]; 7174 phba->fc_map[1] = fcoe_param->fc_map[1]; 7175 phba->fc_map[2] = fcoe_param->fc_map[2]; 7176 return; 7177 } 7178 7179 /** 7180 * lpfc_get_rec_conf23 - Get a record type in config region data. 7181 * @buff: Buffer containing config region 23 data. 7182 * @size: Size of the data buffer. 7183 * @rec_type: Record type to be searched. 7184 * 7185 * This function searches config region data to find the beginning 7186 * of the record specified by record_type. If record found, this 7187 * function return pointer to the record else return NULL. 7188 */ 7189 static uint8_t * 7190 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7191 { 7192 uint32_t offset = 0, rec_length; 7193 7194 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7195 (size < sizeof(uint32_t))) 7196 return NULL; 7197 7198 rec_length = buff[offset + 1]; 7199 7200 /* 7201 * One TLV record has one word header and number of data words 7202 * specified in the rec_length field of the record header. 7203 */ 7204 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7205 <= size) { 7206 if (buff[offset] == rec_type) 7207 return &buff[offset]; 7208 7209 if (buff[offset] == LPFC_REGION23_LAST_REC) 7210 return NULL; 7211 7212 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7213 rec_length = buff[offset + 1]; 7214 } 7215 return NULL; 7216 } 7217 7218 /** 7219 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7220 * @phba: Pointer to lpfc_hba data structure. 7221 * @buff: Buffer containing config region 23 data. 7222 * @size: Size of the data buffer. 7223 * 7224 * This function parses the FCoE config parameters in config region 23 and 7225 * populate driver data structure with the parameters. 7226 */ 7227 void 7228 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7229 uint8_t *buff, 7230 uint32_t size) 7231 { 7232 uint32_t offset = 0; 7233 uint8_t *rec_ptr; 7234 7235 /* 7236 * If data size is less than 2 words signature and version cannot be 7237 * verified. 7238 */ 7239 if (size < 2*sizeof(uint32_t)) 7240 return; 7241 7242 /* Check the region signature first */ 7243 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7244 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7245 "2567 Config region 23 has bad signature\n"); 7246 return; 7247 } 7248 7249 offset += 4; 7250 7251 /* Check the data structure version */ 7252 if (buff[offset] != LPFC_REGION23_VERSION) { 7253 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7254 "2568 Config region 23 has bad version\n"); 7255 return; 7256 } 7257 offset += 4; 7258 7259 /* Read FCoE param record */ 7260 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7261 size - offset, FCOE_PARAM_TYPE); 7262 if (rec_ptr) 7263 lpfc_read_fcoe_param(phba, rec_ptr); 7264 7265 /* Read FCF connection table */ 7266 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7267 size - offset, FCOE_CONN_TBL_TYPE); 7268 if (rec_ptr) 7269 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7270 7271 } 7272 7273 /* 7274 * lpfc_error_lost_link - IO failure from link event or FW reset check. 7275 * 7276 * @vport: Pointer to lpfc_vport data structure. 7277 * @ulp_status: IO completion status. 7278 * @ulp_word4: Reason code for the ulp_status. 7279 * 7280 * This function evaluates the ulp_status and ulp_word4 values 7281 * for specific error values that indicate an internal link fault 7282 * or fw reset event for the completing IO. Callers require this 7283 * common data to decide next steps on the IO. 7284 * 7285 * Return: 7286 * false - No link or reset error occurred. 7287 * true - A link or reset error occurred. 7288 */ 7289 bool 7290 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4) 7291 { 7292 /* Mask off the extra port data to get just the reason code. */ 7293 u32 rsn_code = IOERR_PARAM_MASK & ulp_word4; 7294 7295 if (ulp_status == IOSTAT_LOCAL_REJECT && 7296 (rsn_code == IOERR_SLI_ABORTED || 7297 rsn_code == IOERR_LINK_DOWN || 7298 rsn_code == IOERR_SLI_DOWN)) { 7299 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS, 7300 "0408 Report link error true: <x%x:x%x>\n", 7301 ulp_status, ulp_word4); 7302 return true; 7303 } 7304 7305 return false; 7306 } 7307