1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/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%lx refcnt %u 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 if (test_bit(FC_UNLOADING, &vport->load_flag) || 179 !test_bit(HBA_SETUP, &phba->hba_flag)) { 180 spin_lock_irqsave(&ndlp->lock, iflags); 181 ndlp->rport = NULL; 182 183 /* The scsi_transport is done with the rport so lpfc cannot 184 * call to unregister. Remove the scsi transport reference 185 * and clean up the SCSI transport node details. 186 */ 187 if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) { 188 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 189 190 /* NVME transport-registered rports need the 191 * NLP_XPT_REGD flag to complete an unregister. 192 */ 193 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 194 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 195 spin_unlock_irqrestore(&ndlp->lock, iflags); 196 lpfc_nlp_put(ndlp); 197 spin_lock_irqsave(&ndlp->lock, iflags); 198 } 199 200 /* Only 1 thread can drop the initial node reference. If 201 * another thread has set NLP_DROPPED, this thread is done. 202 */ 203 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD) && 204 !(ndlp->nlp_flag & NLP_DROPPED)) { 205 ndlp->nlp_flag |= NLP_DROPPED; 206 spin_unlock_irqrestore(&ndlp->lock, iflags); 207 lpfc_nlp_put(ndlp); 208 return; 209 } 210 211 spin_unlock_irqrestore(&ndlp->lock, iflags); 212 return; 213 } 214 215 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 216 return; 217 218 /* check for recovered fabric node */ 219 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && 220 ndlp->nlp_DID == Fabric_DID) 221 return; 222 223 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 224 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 225 "6789 rport name %llx != node port name %llx", 226 rport->port_name, 227 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 228 229 evtp = &ndlp->dev_loss_evt; 230 231 if (!list_empty(&evtp->evt_listp)) { 232 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 233 "6790 rport name %llx dev_loss_evt pending\n", 234 rport->port_name); 235 return; 236 } 237 238 spin_lock_irqsave(&ndlp->lock, iflags); 239 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 240 241 /* If there is a PLOGI in progress, and we are in a 242 * NLP_NPR_2B_DISC state, don't turn off the flag. 243 */ 244 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 245 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 246 247 /* 248 * The backend does not expect any more calls associated with this 249 * rport. Remove the association between rport and ndlp. 250 */ 251 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 252 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 253 ndlp->rport = NULL; 254 spin_unlock_irqrestore(&ndlp->lock, iflags); 255 256 if (phba->worker_thread) { 257 /* We need to hold the node by incrementing the reference 258 * count until this queued work is done 259 */ 260 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 261 262 spin_lock_irqsave(&phba->hbalock, iflags); 263 if (evtp->evt_arg1) { 264 evtp->evt = LPFC_EVT_DEV_LOSS; 265 list_add_tail(&evtp->evt_listp, &phba->work_list); 266 spin_unlock_irqrestore(&phba->hbalock, iflags); 267 lpfc_worker_wake_up(phba); 268 return; 269 } 270 spin_unlock_irqrestore(&phba->hbalock, iflags); 271 } else { 272 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 273 "3188 worker thread is stopped %s x%06x, " 274 " rport x%px flg x%x load_flag x%lx refcnt " 275 "%d\n", __func__, ndlp->nlp_DID, 276 ndlp->rport, ndlp->nlp_flag, 277 vport->load_flag, kref_read(&ndlp->kref)); 278 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 279 spin_lock_irqsave(&ndlp->lock, iflags); 280 /* Node is in dev loss. No further transaction. */ 281 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 282 spin_unlock_irqrestore(&ndlp->lock, iflags); 283 lpfc_disc_state_machine(vport, ndlp, NULL, 284 NLP_EVT_DEVICE_RM); 285 } 286 } 287 } 288 289 /** 290 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 291 * @vport: Pointer to vport context object. 292 * 293 * This function checks for idle VMID entries related to a particular vport. If 294 * found unused/idle, free them accordingly. 295 **/ 296 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 297 { 298 u16 keep; 299 u32 difftime = 0, r, bucket; 300 u64 *lta; 301 int cpu; 302 struct lpfc_vmid *vmp; 303 304 write_lock(&vport->vmid_lock); 305 306 if (!vport->cur_vmid_cnt) 307 goto out; 308 309 /* iterate through the table */ 310 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 311 keep = 0; 312 if (vmp->flag & LPFC_VMID_REGISTERED) { 313 /* check if the particular VMID is in use */ 314 /* for all available per cpu variable */ 315 for_each_possible_cpu(cpu) { 316 /* if last access time is less than timeout */ 317 lta = per_cpu_ptr(vmp->last_io_time, cpu); 318 if (!lta) 319 continue; 320 difftime = (jiffies) - (*lta); 321 if ((vport->vmid_inactivity_timeout * 322 JIFFIES_PER_HR) > difftime) { 323 keep = 1; 324 break; 325 } 326 } 327 328 /* if none of the cpus have been used by the vm, */ 329 /* remove the entry if already registered */ 330 if (!keep) { 331 /* mark the entry for deregistration */ 332 vmp->flag = LPFC_VMID_DE_REGISTER; 333 write_unlock(&vport->vmid_lock); 334 if (vport->vmid_priority_tagging) 335 r = lpfc_vmid_uvem(vport, vmp, false); 336 else 337 r = lpfc_vmid_cmd(vport, 338 SLI_CTAS_DAPP_IDENT, 339 vmp); 340 341 /* decrement number of active vms and mark */ 342 /* entry in slot as free */ 343 write_lock(&vport->vmid_lock); 344 if (!r) { 345 struct lpfc_vmid *ht = vmp; 346 347 vport->cur_vmid_cnt--; 348 ht->flag = LPFC_VMID_SLOT_FREE; 349 free_percpu(ht->last_io_time); 350 ht->last_io_time = NULL; 351 hash_del(&ht->hnode); 352 } 353 } 354 } 355 } 356 out: 357 write_unlock(&vport->vmid_lock); 358 } 359 360 /** 361 * lpfc_check_inactive_vmid - VMID inactivity checker 362 * @phba: Pointer to hba context object. 363 * 364 * This function is called from the worker thread to determine if an entry in 365 * the VMID table can be released since there was no I/O activity seen from that 366 * particular VM for the specified time. When this happens, the entry in the 367 * table is released and also the resources on the switch cleared. 368 **/ 369 370 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 371 { 372 struct lpfc_vport *vport; 373 struct lpfc_vport **vports; 374 int i; 375 376 vports = lpfc_create_vport_work_array(phba); 377 if (!vports) 378 return; 379 380 for (i = 0; i <= phba->max_vports; i++) { 381 if ((!vports[i]) && (i == 0)) 382 vport = phba->pport; 383 else 384 vport = vports[i]; 385 if (!vport) 386 break; 387 388 lpfc_check_inactive_vmid_one(vport); 389 } 390 lpfc_destroy_vport_work_array(phba, vports); 391 } 392 393 /** 394 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 395 * @vport: Pointer to vport object. 396 * @ndlp: Pointer to remote node object. 397 * 398 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 399 * node during dev_loss_tmo processing, then this function restores the nlp_put 400 * kref decrement from lpfc_dev_loss_tmo_handler. 401 **/ 402 void 403 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 404 struct lpfc_nodelist *ndlp) 405 { 406 unsigned long iflags; 407 408 spin_lock_irqsave(&ndlp->lock, iflags); 409 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 410 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 411 spin_unlock_irqrestore(&ndlp->lock, iflags); 412 lpfc_nlp_get(ndlp); 413 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 414 "8438 Devloss timeout reversed on DID x%x " 415 "refcnt %d ndlp %p flag x%x " 416 "port_state = x%x\n", 417 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 418 ndlp->nlp_flag, vport->port_state); 419 return; 420 } 421 spin_unlock_irqrestore(&ndlp->lock, iflags); 422 } 423 424 /** 425 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 426 * @ndlp: Pointer to remote node object. 427 * 428 * This function is called from the worker thread when devloss timeout timer 429 * expires. For SLI4 host, this routine shall return 1 when at lease one 430 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 431 * routine shall return 0 when there is no remote node is still in use of FCF 432 * when devloss timeout happened to this @ndlp. 433 **/ 434 static int 435 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 436 { 437 struct lpfc_vport *vport; 438 struct lpfc_hba *phba; 439 uint8_t *name; 440 int warn_on = 0; 441 int fcf_inuse = 0; 442 bool recovering = false; 443 struct fc_vport *fc_vport = NULL; 444 unsigned long iflags; 445 446 vport = ndlp->vport; 447 name = (uint8_t *)&ndlp->nlp_portname; 448 phba = vport->phba; 449 450 if (phba->sli_rev == LPFC_SLI_REV4) 451 fcf_inuse = lpfc_fcf_inuse(phba); 452 453 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 454 "rport devlosstmo:did:x%x type:x%x id:x%x", 455 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 456 457 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 458 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 459 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 460 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 461 462 /* If the driver is recovering the rport, ignore devloss. */ 463 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 464 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 465 "0284 Devloss timeout Ignored on " 466 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 467 "NPort x%x\n", 468 *name, *(name+1), *(name+2), *(name+3), 469 *(name+4), *(name+5), *(name+6), *(name+7), 470 ndlp->nlp_DID); 471 472 spin_lock_irqsave(&ndlp->lock, iflags); 473 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 474 spin_unlock_irqrestore(&ndlp->lock, iflags); 475 return fcf_inuse; 476 } 477 478 /* Fabric nodes are done. */ 479 if (ndlp->nlp_type & NLP_FABRIC) { 480 spin_lock_irqsave(&ndlp->lock, iflags); 481 482 /* The driver has to account for a race between any fabric 483 * node that's in recovery when dev_loss_tmo expires. When this 484 * happens, the driver has to allow node recovery. 485 */ 486 switch (ndlp->nlp_DID) { 487 case Fabric_DID: 488 fc_vport = vport->fc_vport; 489 if (fc_vport) { 490 /* NPIV path. */ 491 if (fc_vport->vport_state == 492 FC_VPORT_INITIALIZING) 493 recovering = true; 494 } else { 495 /* Physical port path. */ 496 if (test_bit(HBA_FLOGI_OUTSTANDING, 497 &phba->hba_flag)) 498 recovering = true; 499 } 500 break; 501 case Fabric_Cntl_DID: 502 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 503 recovering = true; 504 break; 505 case FDMI_DID: 506 fallthrough; 507 case NameServer_DID: 508 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 509 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 510 recovering = true; 511 break; 512 default: 513 /* Ensure the nlp_DID at least has the correct prefix. 514 * The fabric domain controller's last three nibbles 515 * vary so we handle it in the default case. 516 */ 517 if (ndlp->nlp_DID & Fabric_DID_MASK) { 518 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 519 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 520 recovering = true; 521 } 522 break; 523 } 524 spin_unlock_irqrestore(&ndlp->lock, iflags); 525 526 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 527 * the following lpfc_nlp_put is necessary after fabric node is 528 * recovered. 529 */ 530 if (recovering) { 531 lpfc_printf_vlog(vport, KERN_INFO, 532 LOG_DISCOVERY | LOG_NODE, 533 "8436 Devloss timeout marked on " 534 "DID x%x refcnt %d ndlp %p " 535 "flag x%x port_state = x%x\n", 536 ndlp->nlp_DID, kref_read(&ndlp->kref), 537 ndlp, ndlp->nlp_flag, 538 vport->port_state); 539 spin_lock_irqsave(&ndlp->lock, iflags); 540 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 541 spin_unlock_irqrestore(&ndlp->lock, iflags); 542 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 543 /* Fabric node fully recovered before this dev_loss_tmo 544 * queue work is processed. Thus, ignore the 545 * dev_loss_tmo event. 546 */ 547 lpfc_printf_vlog(vport, KERN_INFO, 548 LOG_DISCOVERY | LOG_NODE, 549 "8437 Devloss timeout ignored on " 550 "DID x%x refcnt %d ndlp %p " 551 "flag x%x port_state = x%x\n", 552 ndlp->nlp_DID, kref_read(&ndlp->kref), 553 ndlp, ndlp->nlp_flag, 554 vport->port_state); 555 spin_lock_irqsave(&ndlp->lock, iflags); 556 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 557 spin_unlock_irqrestore(&ndlp->lock, iflags); 558 return fcf_inuse; 559 } 560 561 spin_lock_irqsave(&ndlp->lock, iflags); 562 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 563 spin_unlock_irqrestore(&ndlp->lock, iflags); 564 lpfc_nlp_put(ndlp); 565 return fcf_inuse; 566 } 567 568 if (ndlp->nlp_sid != NLP_NO_SID) { 569 warn_on = 1; 570 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 571 } 572 573 if (warn_on) { 574 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 575 "0203 Devloss timeout on " 576 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 577 "NPort x%06x Data: x%x x%x x%x refcnt %d\n", 578 *name, *(name+1), *(name+2), *(name+3), 579 *(name+4), *(name+5), *(name+6), *(name+7), 580 ndlp->nlp_DID, ndlp->nlp_flag, 581 ndlp->nlp_state, ndlp->nlp_rpi, 582 kref_read(&ndlp->kref)); 583 } else { 584 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 585 "0204 Devloss timeout on " 586 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 587 "NPort x%06x Data: x%x x%x x%x\n", 588 *name, *(name+1), *(name+2), *(name+3), 589 *(name+4), *(name+5), *(name+6), *(name+7), 590 ndlp->nlp_DID, ndlp->nlp_flag, 591 ndlp->nlp_state, ndlp->nlp_rpi); 592 } 593 spin_lock_irqsave(&ndlp->lock, iflags); 594 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 595 spin_unlock_irqrestore(&ndlp->lock, iflags); 596 597 /* If we are devloss, but we are in the process of rediscovering the 598 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 599 */ 600 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 601 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 602 return fcf_inuse; 603 } 604 605 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 606 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 607 608 return fcf_inuse; 609 } 610 611 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 612 { 613 struct lpfc_vport *vport; 614 struct lpfc_vport **vports; 615 int i; 616 617 vports = lpfc_create_vport_work_array(phba); 618 if (!vports) 619 return; 620 621 for (i = 0; i <= phba->max_vports; i++) { 622 if ((!vports[i]) && (i == 0)) 623 vport = phba->pport; 624 else 625 vport = vports[i]; 626 if (!vport) 627 break; 628 629 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 630 if (!lpfc_issue_els_qfpa(vport)) 631 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 632 } 633 } 634 lpfc_destroy_vport_work_array(phba, vports); 635 } 636 637 /** 638 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 639 * @phba: Pointer to hba context object. 640 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 641 * @nlp_did: remote node identifer with devloss timeout. 642 * 643 * This function is called from the worker thread after invoking devloss 644 * timeout handler and releasing the reference count for the ndlp with 645 * which the devloss timeout was handled for SLI4 host. For the devloss 646 * timeout of the last remote node which had been in use of FCF, when this 647 * routine is invoked, it shall be guaranteed that none of the remote are 648 * in-use of FCF. When devloss timeout to the last remote using the FCF, 649 * if the FIP engine is neither in FCF table scan process nor roundrobin 650 * failover process, the in-use FCF shall be unregistered. If the FIP 651 * engine is in FCF discovery process, the devloss timeout state shall 652 * be set for either the FCF table scan process or roundrobin failover 653 * process to unregister the in-use FCF. 654 **/ 655 static void 656 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 657 uint32_t nlp_did) 658 { 659 /* If devloss timeout happened to a remote node when FCF had no 660 * longer been in-use, do nothing. 661 */ 662 if (!fcf_inuse) 663 return; 664 665 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) && 666 !lpfc_fcf_inuse(phba)) { 667 spin_lock_irq(&phba->hbalock); 668 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 669 if (test_and_set_bit(HBA_DEVLOSS_TMO, 670 &phba->hba_flag)) { 671 spin_unlock_irq(&phba->hbalock); 672 return; 673 } 674 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 675 "2847 Last remote node (x%x) using " 676 "FCF devloss tmo\n", nlp_did); 677 } 678 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 679 spin_unlock_irq(&phba->hbalock); 680 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 681 "2868 Devloss tmo to FCF rediscovery " 682 "in progress\n"); 683 return; 684 } 685 spin_unlock_irq(&phba->hbalock); 686 if (!test_bit(FCF_TS_INPROG, &phba->hba_flag) && 687 !test_bit(FCF_RR_INPROG, &phba->hba_flag)) { 688 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 689 "2869 Devloss tmo to idle FIP engine, " 690 "unreg in-use FCF and rescan.\n"); 691 /* Unregister in-use FCF and rescan */ 692 lpfc_unregister_fcf_rescan(phba); 693 return; 694 } 695 if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) 696 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 697 "2870 FCF table scan in progress\n"); 698 if (test_bit(FCF_RR_INPROG, &phba->hba_flag)) 699 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 700 "2871 FLOGI roundrobin FCF failover " 701 "in progress\n"); 702 } 703 lpfc_unregister_unused_fcf(phba); 704 } 705 706 /** 707 * lpfc_alloc_fast_evt - Allocates data structure for posting event 708 * @phba: Pointer to hba context object. 709 * 710 * This function is called from the functions which need to post 711 * events from interrupt context. This function allocates data 712 * structure required for posting event. It also keeps track of 713 * number of events pending and prevent event storm when there are 714 * too many events. 715 **/ 716 struct lpfc_fast_path_event * 717 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 718 struct lpfc_fast_path_event *ret; 719 720 /* If there are lot of fast event do not exhaust memory due to this */ 721 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 722 return NULL; 723 724 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 725 GFP_ATOMIC); 726 if (ret) { 727 atomic_inc(&phba->fast_event_count); 728 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 729 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 730 } 731 return ret; 732 } 733 734 /** 735 * lpfc_free_fast_evt - Frees event data structure 736 * @phba: Pointer to hba context object. 737 * @evt: Event object which need to be freed. 738 * 739 * This function frees the data structure required for posting 740 * events. 741 **/ 742 void 743 lpfc_free_fast_evt(struct lpfc_hba *phba, 744 struct lpfc_fast_path_event *evt) { 745 746 atomic_dec(&phba->fast_event_count); 747 kfree(evt); 748 } 749 750 /** 751 * lpfc_send_fastpath_evt - Posts events generated from fast path 752 * @phba: Pointer to hba context object. 753 * @evtp: Event data structure. 754 * 755 * This function is called from worker thread, when the interrupt 756 * context need to post an event. This function posts the event 757 * to fc transport netlink interface. 758 **/ 759 static void 760 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 761 struct lpfc_work_evt *evtp) 762 { 763 unsigned long evt_category, evt_sub_category; 764 struct lpfc_fast_path_event *fast_evt_data; 765 char *evt_data; 766 uint32_t evt_data_size; 767 struct Scsi_Host *shost; 768 769 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 770 work_evt); 771 772 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 773 evt_sub_category = (unsigned long) fast_evt_data->un. 774 fabric_evt.subcategory; 775 shost = lpfc_shost_from_vport(fast_evt_data->vport); 776 if (evt_category == FC_REG_FABRIC_EVENT) { 777 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 778 evt_data = (char *) &fast_evt_data->un.read_check_error; 779 evt_data_size = sizeof(fast_evt_data->un. 780 read_check_error); 781 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 782 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 783 evt_data = (char *) &fast_evt_data->un.fabric_evt; 784 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 785 } else { 786 lpfc_free_fast_evt(phba, fast_evt_data); 787 return; 788 } 789 } else if (evt_category == FC_REG_SCSI_EVENT) { 790 switch (evt_sub_category) { 791 case LPFC_EVENT_QFULL: 792 case LPFC_EVENT_DEVBSY: 793 evt_data = (char *) &fast_evt_data->un.scsi_evt; 794 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 795 break; 796 case LPFC_EVENT_CHECK_COND: 797 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 798 evt_data_size = sizeof(fast_evt_data->un. 799 check_cond_evt); 800 break; 801 case LPFC_EVENT_VARQUEDEPTH: 802 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 803 evt_data_size = sizeof(fast_evt_data->un. 804 queue_depth_evt); 805 break; 806 default: 807 lpfc_free_fast_evt(phba, fast_evt_data); 808 return; 809 } 810 } else { 811 lpfc_free_fast_evt(phba, fast_evt_data); 812 return; 813 } 814 815 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 816 fc_host_post_vendor_event(shost, 817 fc_get_event_number(), 818 evt_data_size, 819 evt_data, 820 LPFC_NL_VENDOR_ID); 821 822 lpfc_free_fast_evt(phba, fast_evt_data); 823 return; 824 } 825 826 static void 827 lpfc_work_list_done(struct lpfc_hba *phba) 828 { 829 struct lpfc_work_evt *evtp = NULL; 830 struct lpfc_nodelist *ndlp; 831 int free_evt; 832 int fcf_inuse; 833 uint32_t nlp_did; 834 bool hba_pci_err; 835 836 spin_lock_irq(&phba->hbalock); 837 while (!list_empty(&phba->work_list)) { 838 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 839 evt_listp); 840 spin_unlock_irq(&phba->hbalock); 841 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 842 free_evt = 1; 843 switch (evtp->evt) { 844 case LPFC_EVT_ELS_RETRY: 845 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 846 if (!hba_pci_err) { 847 lpfc_els_retry_delay_handler(ndlp); 848 free_evt = 0; /* evt is part of ndlp */ 849 } 850 /* decrement the node reference count held 851 * for this queued work 852 */ 853 lpfc_nlp_put(ndlp); 854 break; 855 case LPFC_EVT_DEV_LOSS: 856 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 857 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 858 free_evt = 0; 859 /* decrement the node reference count held for 860 * this queued work 861 */ 862 nlp_did = ndlp->nlp_DID; 863 lpfc_nlp_put(ndlp); 864 if (phba->sli_rev == LPFC_SLI_REV4) 865 lpfc_sli4_post_dev_loss_tmo_handler(phba, 866 fcf_inuse, 867 nlp_did); 868 break; 869 case LPFC_EVT_RECOVER_PORT: 870 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 871 if (!hba_pci_err) { 872 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 873 free_evt = 0; 874 } 875 /* decrement the node reference count held for 876 * this queued work 877 */ 878 lpfc_nlp_put(ndlp); 879 break; 880 case LPFC_EVT_ONLINE: 881 if (phba->link_state < LPFC_LINK_DOWN) 882 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 883 else 884 *(int *) (evtp->evt_arg1) = 0; 885 complete((struct completion *)(evtp->evt_arg2)); 886 break; 887 case LPFC_EVT_OFFLINE_PREP: 888 if (phba->link_state >= LPFC_LINK_DOWN) 889 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 890 *(int *)(evtp->evt_arg1) = 0; 891 complete((struct completion *)(evtp->evt_arg2)); 892 break; 893 case LPFC_EVT_OFFLINE: 894 lpfc_offline(phba); 895 lpfc_sli_brdrestart(phba); 896 *(int *)(evtp->evt_arg1) = 897 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 898 lpfc_unblock_mgmt_io(phba); 899 complete((struct completion *)(evtp->evt_arg2)); 900 break; 901 case LPFC_EVT_WARM_START: 902 lpfc_offline(phba); 903 lpfc_reset_barrier(phba); 904 lpfc_sli_brdreset(phba); 905 lpfc_hba_down_post(phba); 906 *(int *)(evtp->evt_arg1) = 907 lpfc_sli_brdready(phba, HS_MBRDY); 908 lpfc_unblock_mgmt_io(phba); 909 complete((struct completion *)(evtp->evt_arg2)); 910 break; 911 case LPFC_EVT_KILL: 912 lpfc_offline(phba); 913 *(int *)(evtp->evt_arg1) 914 = (phba->pport->stopped) 915 ? 0 : lpfc_sli_brdkill(phba); 916 lpfc_unblock_mgmt_io(phba); 917 complete((struct completion *)(evtp->evt_arg2)); 918 break; 919 case LPFC_EVT_FASTPATH_MGMT_EVT: 920 lpfc_send_fastpath_evt(phba, evtp); 921 free_evt = 0; 922 break; 923 case LPFC_EVT_RESET_HBA: 924 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 925 lpfc_reset_hba(phba); 926 break; 927 } 928 if (free_evt) 929 kfree(evtp); 930 spin_lock_irq(&phba->hbalock); 931 } 932 spin_unlock_irq(&phba->hbalock); 933 934 } 935 936 static void 937 lpfc_work_done(struct lpfc_hba *phba) 938 { 939 struct lpfc_sli_ring *pring; 940 uint32_t ha_copy, status, control, work_port_events; 941 struct lpfc_vport **vports; 942 struct lpfc_vport *vport; 943 int i; 944 bool hba_pci_err; 945 946 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 947 spin_lock_irq(&phba->hbalock); 948 ha_copy = phba->work_ha; 949 phba->work_ha = 0; 950 spin_unlock_irq(&phba->hbalock); 951 if (hba_pci_err) 952 ha_copy = 0; 953 954 /* First, try to post the next mailbox command to SLI4 device */ 955 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 956 lpfc_sli4_post_async_mbox(phba); 957 958 if (ha_copy & HA_ERATT) { 959 /* Handle the error attention event */ 960 lpfc_handle_eratt(phba); 961 962 if (phba->fw_dump_cmpl) { 963 complete(phba->fw_dump_cmpl); 964 phba->fw_dump_cmpl = NULL; 965 } 966 } 967 968 if (ha_copy & HA_MBATT) 969 lpfc_sli_handle_mb_event(phba); 970 971 if (ha_copy & HA_LATT) 972 lpfc_handle_latt(phba); 973 974 /* Handle VMID Events */ 975 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 976 if (phba->pport->work_port_events & 977 WORKER_CHECK_VMID_ISSUE_QFPA) { 978 lpfc_check_vmid_qfpa_issue(phba); 979 phba->pport->work_port_events &= 980 ~WORKER_CHECK_VMID_ISSUE_QFPA; 981 } 982 if (phba->pport->work_port_events & 983 WORKER_CHECK_INACTIVE_VMID) { 984 lpfc_check_inactive_vmid(phba); 985 phba->pport->work_port_events &= 986 ~WORKER_CHECK_INACTIVE_VMID; 987 } 988 } 989 990 /* Process SLI4 events */ 991 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 992 if (test_bit(HBA_RRQ_ACTIVE, &phba->hba_flag)) 993 lpfc_handle_rrq_active(phba); 994 if (test_bit(ELS_XRI_ABORT_EVENT, &phba->hba_flag)) 995 lpfc_sli4_els_xri_abort_event_proc(phba); 996 if (test_bit(ASYNC_EVENT, &phba->hba_flag)) 997 lpfc_sli4_async_event_proc(phba); 998 if (test_and_clear_bit(HBA_POST_RECEIVE_BUFFER, 999 &phba->hba_flag)) 1000 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 1001 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 1002 lpfc_sli4_fcf_redisc_event_proc(phba); 1003 } 1004 1005 vports = lpfc_create_vport_work_array(phba); 1006 if (vports != NULL) 1007 for (i = 0; i <= phba->max_vports; i++) { 1008 /* 1009 * We could have no vports in array if unloading, so if 1010 * this happens then just use the pport 1011 */ 1012 if (vports[i] == NULL && i == 0) 1013 vport = phba->pport; 1014 else 1015 vport = vports[i]; 1016 if (vport == NULL) 1017 break; 1018 spin_lock_irq(&vport->work_port_lock); 1019 work_port_events = vport->work_port_events; 1020 vport->work_port_events &= ~work_port_events; 1021 spin_unlock_irq(&vport->work_port_lock); 1022 if (hba_pci_err) 1023 continue; 1024 if (work_port_events & WORKER_DISC_TMO) 1025 lpfc_disc_timeout_handler(vport); 1026 if (work_port_events & WORKER_ELS_TMO) 1027 lpfc_els_timeout_handler(vport); 1028 if (work_port_events & WORKER_HB_TMO) 1029 lpfc_hb_timeout_handler(phba); 1030 if (work_port_events & WORKER_MBOX_TMO) 1031 lpfc_mbox_timeout_handler(phba); 1032 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 1033 lpfc_unblock_fabric_iocbs(phba); 1034 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 1035 lpfc_ramp_down_queue_handler(phba); 1036 if (work_port_events & WORKER_DELAYED_DISC_TMO) 1037 lpfc_delayed_disc_timeout_handler(vport); 1038 } 1039 lpfc_destroy_vport_work_array(phba, vports); 1040 1041 pring = lpfc_phba_elsring(phba); 1042 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 1043 status >>= (4*LPFC_ELS_RING); 1044 if (pring && (status & HA_RXMASK || 1045 pring->flag & LPFC_DEFERRED_RING_EVENT || 1046 test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))) { 1047 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1048 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1049 /* Preserve legacy behavior. */ 1050 if (!test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag)) 1051 set_bit(LPFC_DATA_READY, &phba->data_flags); 1052 } else { 1053 /* Driver could have abort request completed in queue 1054 * when link goes down. Allow for this transition. 1055 */ 1056 if (phba->link_state >= LPFC_LINK_DOWN || 1057 phba->link_flag & LS_MDS_LOOPBACK) { 1058 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1059 lpfc_sli_handle_slow_ring_event(phba, pring, 1060 (status & 1061 HA_RXMASK)); 1062 } 1063 } 1064 if (phba->sli_rev == LPFC_SLI_REV4) 1065 lpfc_drain_txq(phba); 1066 /* 1067 * Turn on Ring interrupts 1068 */ 1069 if (phba->sli_rev <= LPFC_SLI_REV3) { 1070 spin_lock_irq(&phba->hbalock); 1071 control = readl(phba->HCregaddr); 1072 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1073 lpfc_debugfs_slow_ring_trc(phba, 1074 "WRK Enable ring: cntl:x%x hacopy:x%x", 1075 control, ha_copy, 0); 1076 1077 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1078 writel(control, phba->HCregaddr); 1079 readl(phba->HCregaddr); /* flush */ 1080 } else { 1081 lpfc_debugfs_slow_ring_trc(phba, 1082 "WRK Ring ok: cntl:x%x hacopy:x%x", 1083 control, ha_copy, 0); 1084 } 1085 spin_unlock_irq(&phba->hbalock); 1086 } 1087 } 1088 lpfc_work_list_done(phba); 1089 } 1090 1091 int 1092 lpfc_do_work(void *p) 1093 { 1094 struct lpfc_hba *phba = p; 1095 int rc; 1096 1097 set_user_nice(current, MIN_NICE); 1098 current->flags |= PF_NOFREEZE; 1099 phba->data_flags = 0; 1100 1101 while (!kthread_should_stop()) { 1102 /* wait and check worker queue activities */ 1103 rc = wait_event_interruptible(phba->work_waitq, 1104 (test_and_clear_bit(LPFC_DATA_READY, 1105 &phba->data_flags) 1106 || kthread_should_stop())); 1107 /* Signal wakeup shall terminate the worker thread */ 1108 if (rc) { 1109 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1110 "0433 Wakeup on signal: rc=x%x\n", rc); 1111 break; 1112 } 1113 1114 /* Attend pending lpfc data processing */ 1115 lpfc_work_done(phba); 1116 } 1117 phba->worker_thread = NULL; 1118 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1119 "0432 Worker thread stopped.\n"); 1120 return 0; 1121 } 1122 1123 /* 1124 * This is only called to handle FC worker events. Since this a rare 1125 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1126 * embedding it in the IOCB. 1127 */ 1128 int 1129 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1130 uint32_t evt) 1131 { 1132 struct lpfc_work_evt *evtp; 1133 unsigned long flags; 1134 1135 /* 1136 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1137 * be queued to worker thread for processing 1138 */ 1139 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1140 if (!evtp) 1141 return 0; 1142 1143 evtp->evt_arg1 = arg1; 1144 evtp->evt_arg2 = arg2; 1145 evtp->evt = evt; 1146 1147 spin_lock_irqsave(&phba->hbalock, flags); 1148 list_add_tail(&evtp->evt_listp, &phba->work_list); 1149 spin_unlock_irqrestore(&phba->hbalock, flags); 1150 1151 lpfc_worker_wake_up(phba); 1152 1153 return 1; 1154 } 1155 1156 void 1157 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1158 { 1159 struct lpfc_hba *phba = vport->phba; 1160 struct lpfc_nodelist *ndlp, *next_ndlp; 1161 1162 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1163 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1164 ((vport->port_type == LPFC_NPIV_PORT) && 1165 ((ndlp->nlp_DID == NameServer_DID) || 1166 (ndlp->nlp_DID == FDMI_DID) || 1167 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1168 lpfc_unreg_rpi(vport, ndlp); 1169 1170 /* Leave Fabric nodes alone on link down */ 1171 if ((phba->sli_rev < LPFC_SLI_REV4) && 1172 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1173 continue; 1174 1175 /* Notify transport of connectivity loss to trigger cleanup. */ 1176 if (phba->nvmet_support && 1177 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1178 lpfc_nvmet_invalidate_host(phba, ndlp); 1179 1180 lpfc_disc_state_machine(vport, ndlp, NULL, 1181 remove 1182 ? NLP_EVT_DEVICE_RM 1183 : NLP_EVT_DEVICE_RECOVERY); 1184 } 1185 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1186 if (phba->sli_rev == LPFC_SLI_REV4) 1187 lpfc_sli4_unreg_all_rpis(vport); 1188 lpfc_mbx_unreg_vpi(vport); 1189 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 1190 } 1191 } 1192 1193 void 1194 lpfc_port_link_failure(struct lpfc_vport *vport) 1195 { 1196 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1197 1198 /* Cleanup any outstanding received buffers */ 1199 lpfc_cleanup_rcv_buffers(vport); 1200 1201 /* Cleanup any outstanding RSCN activity */ 1202 lpfc_els_flush_rscn(vport); 1203 1204 /* Cleanup any outstanding ELS commands */ 1205 lpfc_els_flush_cmd(vport); 1206 1207 lpfc_cleanup_rpis(vport, 0); 1208 1209 /* Turn off discovery timer if its running */ 1210 lpfc_can_disctmo(vport); 1211 } 1212 1213 void 1214 lpfc_linkdown_port(struct lpfc_vport *vport) 1215 { 1216 struct lpfc_hba *phba = vport->phba; 1217 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1218 1219 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1220 fc_host_post_event(shost, fc_get_event_number(), 1221 FCH_EVT_LINKDOWN, 0); 1222 1223 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1224 "Link Down: state:x%x rtry:x%x flg:x%x", 1225 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1226 1227 lpfc_port_link_failure(vport); 1228 1229 /* Stop delayed Nport discovery */ 1230 clear_bit(FC_DISC_DELAYED, &vport->fc_flag); 1231 del_timer_sync(&vport->delayed_disc_tmo); 1232 1233 if (phba->sli_rev == LPFC_SLI_REV4 && 1234 vport->port_type == LPFC_PHYSICAL_PORT && 1235 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1236 /* Assume success on link up */ 1237 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1238 } 1239 } 1240 1241 int 1242 lpfc_linkdown(struct lpfc_hba *phba) 1243 { 1244 struct lpfc_vport *vport = phba->pport; 1245 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1246 struct lpfc_vport **vports; 1247 LPFC_MBOXQ_t *mb; 1248 int i; 1249 int offline; 1250 1251 if (phba->link_state == LPFC_LINK_DOWN) 1252 return 0; 1253 1254 /* Block all SCSI stack I/Os */ 1255 lpfc_scsi_dev_block(phba); 1256 offline = pci_channel_offline(phba->pcidev); 1257 1258 /* Decrement the held ndlp if there is a deferred flogi acc */ 1259 if (phba->defer_flogi_acc.flag) { 1260 if (phba->defer_flogi_acc.ndlp) { 1261 lpfc_nlp_put(phba->defer_flogi_acc.ndlp); 1262 phba->defer_flogi_acc.ndlp = NULL; 1263 } 1264 } 1265 phba->defer_flogi_acc.flag = false; 1266 1267 /* Clear external loopback plug detected flag */ 1268 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1269 1270 spin_lock_irq(&phba->hbalock); 1271 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1272 spin_unlock_irq(&phba->hbalock); 1273 if (phba->link_state > LPFC_LINK_DOWN) { 1274 phba->link_state = LPFC_LINK_DOWN; 1275 if (phba->sli4_hba.conf_trunk) { 1276 phba->trunk_link.link0.state = 0; 1277 phba->trunk_link.link1.state = 0; 1278 phba->trunk_link.link2.state = 0; 1279 phba->trunk_link.link3.state = 0; 1280 phba->trunk_link.phy_lnk_speed = 1281 LPFC_LINK_SPEED_UNKNOWN; 1282 phba->sli4_hba.link_state.logical_speed = 1283 LPFC_LINK_SPEED_UNKNOWN; 1284 } 1285 clear_bit(FC_LBIT, &phba->pport->fc_flag); 1286 } 1287 vports = lpfc_create_vport_work_array(phba); 1288 if (vports != NULL) { 1289 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1290 /* Issue a LINK DOWN event to all nodes */ 1291 lpfc_linkdown_port(vports[i]); 1292 1293 vports[i]->fc_myDID = 0; 1294 1295 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1296 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1297 if (phba->nvmet_support) 1298 lpfc_nvmet_update_targetport(phba); 1299 else 1300 lpfc_nvme_update_localport(vports[i]); 1301 } 1302 } 1303 } 1304 lpfc_destroy_vport_work_array(phba, vports); 1305 1306 /* Clean up any SLI3 firmware default rpi's */ 1307 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1308 goto skip_unreg_did; 1309 1310 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1311 if (mb) { 1312 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1313 mb->vport = vport; 1314 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1315 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1316 == MBX_NOT_FINISHED) { 1317 mempool_free(mb, phba->mbox_mem_pool); 1318 } 1319 } 1320 1321 skip_unreg_did: 1322 /* Setup myDID for link up if we are in pt2pt mode */ 1323 if (test_bit(FC_PT2PT, &phba->pport->fc_flag)) { 1324 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1325 if (mb) { 1326 lpfc_config_link(phba, mb); 1327 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1328 mb->vport = vport; 1329 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1330 == MBX_NOT_FINISHED) { 1331 mempool_free(mb, phba->mbox_mem_pool); 1332 } 1333 } 1334 clear_bit(FC_PT2PT, &phba->pport->fc_flag); 1335 clear_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag); 1336 spin_lock_irq(shost->host_lock); 1337 phba->pport->rcv_flogi_cnt = 0; 1338 spin_unlock_irq(shost->host_lock); 1339 } 1340 return 0; 1341 } 1342 1343 static void 1344 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1345 { 1346 struct lpfc_nodelist *ndlp; 1347 1348 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1349 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1350 1351 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1352 continue; 1353 if (ndlp->nlp_type & NLP_FABRIC) { 1354 /* On Linkup its safe to clean up the ndlp 1355 * from Fabric connections. 1356 */ 1357 if (ndlp->nlp_DID != Fabric_DID) 1358 lpfc_unreg_rpi(vport, ndlp); 1359 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1360 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1361 /* Fail outstanding IO now since device is 1362 * marked for PLOGI. 1363 */ 1364 lpfc_unreg_rpi(vport, ndlp); 1365 } 1366 } 1367 } 1368 1369 static void 1370 lpfc_linkup_port(struct lpfc_vport *vport) 1371 { 1372 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1373 struct lpfc_hba *phba = vport->phba; 1374 1375 if (test_bit(FC_UNLOADING, &vport->load_flag)) 1376 return; 1377 1378 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1379 "Link Up: top:x%x speed:x%x flg:x%x", 1380 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1381 1382 /* If NPIV is not enabled, only bring the physical port up */ 1383 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1384 (vport != phba->pport)) 1385 return; 1386 1387 if (phba->defer_flogi_acc.flag) { 1388 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1389 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1390 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1391 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1392 } else { 1393 clear_bit(FC_PT2PT, &vport->fc_flag); 1394 clear_bit(FC_PT2PT_PLOGI, &vport->fc_flag); 1395 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1396 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1397 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1398 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1399 } 1400 set_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 1401 1402 spin_lock_irq(shost->host_lock); 1403 vport->fc_ns_retry = 0; 1404 spin_unlock_irq(shost->host_lock); 1405 lpfc_setup_fdmi_mask(vport); 1406 1407 lpfc_linkup_cleanup_nodes(vport); 1408 } 1409 1410 static int 1411 lpfc_linkup(struct lpfc_hba *phba) 1412 { 1413 struct lpfc_vport **vports; 1414 int i; 1415 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1416 1417 phba->link_state = LPFC_LINK_UP; 1418 1419 /* Unblock fabric iocbs if they are blocked */ 1420 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1421 del_timer_sync(&phba->fabric_block_timer); 1422 1423 vports = lpfc_create_vport_work_array(phba); 1424 if (vports != NULL) 1425 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1426 lpfc_linkup_port(vports[i]); 1427 lpfc_destroy_vport_work_array(phba, vports); 1428 1429 /* Clear the pport flogi counter in case the link down was 1430 * absorbed without an ACQE. No lock here - in worker thread 1431 * and discovery is synchronized. 1432 */ 1433 spin_lock_irq(shost->host_lock); 1434 phba->pport->rcv_flogi_cnt = 0; 1435 spin_unlock_irq(shost->host_lock); 1436 1437 /* reinitialize initial HBA flag */ 1438 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag); 1439 clear_bit(HBA_RHBA_CMPL, &phba->hba_flag); 1440 1441 return 0; 1442 } 1443 1444 /* 1445 * This routine handles processing a CLEAR_LA mailbox 1446 * command upon completion. It is setup in the LPFC_MBOXQ 1447 * as the completion routine when the command is 1448 * handed off to the SLI layer. SLI3 only. 1449 */ 1450 static void 1451 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1452 { 1453 struct lpfc_vport *vport = pmb->vport; 1454 struct lpfc_sli *psli = &phba->sli; 1455 MAILBOX_t *mb = &pmb->u.mb; 1456 uint32_t control; 1457 1458 /* Since we don't do discovery right now, turn these off here */ 1459 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1460 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1461 1462 /* Check for error */ 1463 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1464 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1465 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1466 "0320 CLEAR_LA mbxStatus error x%x hba " 1467 "state x%x\n", 1468 mb->mbxStatus, vport->port_state); 1469 phba->link_state = LPFC_HBA_ERROR; 1470 goto out; 1471 } 1472 1473 if (vport->port_type == LPFC_PHYSICAL_PORT) 1474 phba->link_state = LPFC_HBA_READY; 1475 1476 spin_lock_irq(&phba->hbalock); 1477 psli->sli_flag |= LPFC_PROCESS_LA; 1478 control = readl(phba->HCregaddr); 1479 control |= HC_LAINT_ENA; 1480 writel(control, phba->HCregaddr); 1481 readl(phba->HCregaddr); /* flush */ 1482 spin_unlock_irq(&phba->hbalock); 1483 mempool_free(pmb, phba->mbox_mem_pool); 1484 return; 1485 1486 out: 1487 /* Device Discovery completes */ 1488 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1489 "0225 Device Discovery completes\n"); 1490 mempool_free(pmb, phba->mbox_mem_pool); 1491 1492 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1493 1494 lpfc_can_disctmo(vport); 1495 1496 /* turn on Link Attention interrupts */ 1497 1498 spin_lock_irq(&phba->hbalock); 1499 psli->sli_flag |= LPFC_PROCESS_LA; 1500 control = readl(phba->HCregaddr); 1501 control |= HC_LAINT_ENA; 1502 writel(control, phba->HCregaddr); 1503 readl(phba->HCregaddr); /* flush */ 1504 spin_unlock_irq(&phba->hbalock); 1505 1506 return; 1507 } 1508 1509 void 1510 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1511 { 1512 struct lpfc_vport *vport = pmb->vport; 1513 LPFC_MBOXQ_t *sparam_mb; 1514 u16 status = pmb->u.mb.mbxStatus; 1515 int rc; 1516 1517 mempool_free(pmb, phba->mbox_mem_pool); 1518 1519 if (status) 1520 goto out; 1521 1522 /* don't perform discovery for SLI4 loopback diagnostic test */ 1523 if ((phba->sli_rev == LPFC_SLI_REV4) && 1524 !test_bit(HBA_FCOE_MODE, &phba->hba_flag) && 1525 (phba->link_flag & LS_LOOPBACK_MODE)) 1526 return; 1527 1528 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1529 test_bit(FC_PUBLIC_LOOP, &vport->fc_flag) && 1530 !test_bit(FC_LBIT, &vport->fc_flag)) { 1531 /* Need to wait for FAN - use discovery timer 1532 * for timeout. port_state is identically 1533 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1534 */ 1535 lpfc_set_disctmo(vport); 1536 return; 1537 } 1538 1539 /* Start discovery by sending a FLOGI. port_state is identically 1540 * LPFC_FLOGI while waiting for FLOGI cmpl. 1541 */ 1542 if (vport->port_state != LPFC_FLOGI) { 1543 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1544 * bb-credit recovery is in place. 1545 */ 1546 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1547 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1548 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1549 GFP_KERNEL); 1550 if (!sparam_mb) 1551 goto sparam_out; 1552 1553 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1554 if (rc) { 1555 mempool_free(sparam_mb, phba->mbox_mem_pool); 1556 goto sparam_out; 1557 } 1558 sparam_mb->vport = vport; 1559 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1560 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1561 if (rc == MBX_NOT_FINISHED) { 1562 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1563 MBOX_THD_UNLOCKED); 1564 goto sparam_out; 1565 } 1566 1567 set_bit(HBA_DEFER_FLOGI, &phba->hba_flag); 1568 } else { 1569 lpfc_initial_flogi(vport); 1570 } 1571 } else { 1572 if (test_bit(FC_PT2PT, &vport->fc_flag)) 1573 lpfc_disc_start(vport); 1574 } 1575 return; 1576 1577 out: 1578 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1579 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1580 status, vport->port_state); 1581 1582 sparam_out: 1583 lpfc_linkdown(phba); 1584 1585 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1586 "0200 CONFIG_LINK bad hba state x%x\n", 1587 vport->port_state); 1588 1589 lpfc_issue_clear_la(phba, vport); 1590 return; 1591 } 1592 1593 /** 1594 * lpfc_sli4_clear_fcf_rr_bmask 1595 * @phba: pointer to the struct lpfc_hba for this port. 1596 * This fucnction resets the round robin bit mask and clears the 1597 * fcf priority list. The list deletions are done while holding the 1598 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1599 * from the lpfc_fcf_pri record. 1600 **/ 1601 void 1602 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1603 { 1604 struct lpfc_fcf_pri *fcf_pri; 1605 struct lpfc_fcf_pri *next_fcf_pri; 1606 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1607 spin_lock_irq(&phba->hbalock); 1608 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1609 &phba->fcf.fcf_pri_list, list) { 1610 list_del_init(&fcf_pri->list); 1611 fcf_pri->fcf_rec.flag = 0; 1612 } 1613 spin_unlock_irq(&phba->hbalock); 1614 } 1615 static void 1616 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1617 { 1618 struct lpfc_vport *vport = mboxq->vport; 1619 1620 if (mboxq->u.mb.mbxStatus) { 1621 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1622 "2017 REG_FCFI mbxStatus error x%x " 1623 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1624 vport->port_state); 1625 goto fail_out; 1626 } 1627 1628 /* Start FCoE discovery by sending a FLOGI. */ 1629 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1630 /* Set the FCFI registered flag */ 1631 spin_lock_irq(&phba->hbalock); 1632 phba->fcf.fcf_flag |= FCF_REGISTERED; 1633 spin_unlock_irq(&phba->hbalock); 1634 1635 /* If there is a pending FCoE event, restart FCF table scan. */ 1636 if (!test_bit(FCF_RR_INPROG, &phba->hba_flag) && 1637 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1638 goto fail_out; 1639 1640 /* Mark successful completion of FCF table scan */ 1641 spin_lock_irq(&phba->hbalock); 1642 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1643 spin_unlock_irq(&phba->hbalock); 1644 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1645 if (vport->port_state != LPFC_FLOGI) { 1646 set_bit(FCF_RR_INPROG, &phba->hba_flag); 1647 lpfc_issue_init_vfi(vport); 1648 } 1649 goto out; 1650 1651 fail_out: 1652 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1653 out: 1654 mempool_free(mboxq, phba->mbox_mem_pool); 1655 } 1656 1657 /** 1658 * lpfc_fab_name_match - Check if the fcf fabric name match. 1659 * @fab_name: pointer to fabric name. 1660 * @new_fcf_record: pointer to fcf record. 1661 * 1662 * This routine compare the fcf record's fabric name with provided 1663 * fabric name. If the fabric name are identical this function 1664 * returns 1 else return 0. 1665 **/ 1666 static uint32_t 1667 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1668 { 1669 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1670 return 0; 1671 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1672 return 0; 1673 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1674 return 0; 1675 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1676 return 0; 1677 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1678 return 0; 1679 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1680 return 0; 1681 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1682 return 0; 1683 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1684 return 0; 1685 return 1; 1686 } 1687 1688 /** 1689 * lpfc_sw_name_match - Check if the fcf switch name match. 1690 * @sw_name: pointer to switch name. 1691 * @new_fcf_record: pointer to fcf record. 1692 * 1693 * This routine compare the fcf record's switch name with provided 1694 * switch name. If the switch name are identical this function 1695 * returns 1 else return 0. 1696 **/ 1697 static uint32_t 1698 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1699 { 1700 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1701 return 0; 1702 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1703 return 0; 1704 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1705 return 0; 1706 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1707 return 0; 1708 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1709 return 0; 1710 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1711 return 0; 1712 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1713 return 0; 1714 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1715 return 0; 1716 return 1; 1717 } 1718 1719 /** 1720 * lpfc_mac_addr_match - Check if the fcf mac address match. 1721 * @mac_addr: pointer to mac address. 1722 * @new_fcf_record: pointer to fcf record. 1723 * 1724 * This routine compare the fcf record's mac address with HBA's 1725 * FCF mac address. If the mac addresses are identical this function 1726 * returns 1 else return 0. 1727 **/ 1728 static uint32_t 1729 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1730 { 1731 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1732 return 0; 1733 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1734 return 0; 1735 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1736 return 0; 1737 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1738 return 0; 1739 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1740 return 0; 1741 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1742 return 0; 1743 return 1; 1744 } 1745 1746 static bool 1747 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1748 { 1749 return (curr_vlan_id == new_vlan_id); 1750 } 1751 1752 /** 1753 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1754 * @phba: pointer to lpfc hba data structure. 1755 * @fcf_index: Index for the lpfc_fcf_record. 1756 * @new_fcf_record: pointer to hba fcf record. 1757 * 1758 * This routine updates the driver FCF priority record from the new HBA FCF 1759 * record. The hbalock is asserted held in the code path calling this 1760 * routine. 1761 **/ 1762 static void 1763 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1764 struct fcf_record *new_fcf_record 1765 ) 1766 { 1767 struct lpfc_fcf_pri *fcf_pri; 1768 1769 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1770 fcf_pri->fcf_rec.fcf_index = fcf_index; 1771 /* FCF record priority */ 1772 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1773 1774 } 1775 1776 /** 1777 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1778 * @fcf_rec: pointer to driver fcf record. 1779 * @new_fcf_record: pointer to fcf record. 1780 * 1781 * This routine copies the FCF information from the FCF 1782 * record to lpfc_hba data structure. 1783 **/ 1784 static void 1785 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1786 struct fcf_record *new_fcf_record) 1787 { 1788 /* Fabric name */ 1789 fcf_rec->fabric_name[0] = 1790 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1791 fcf_rec->fabric_name[1] = 1792 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1793 fcf_rec->fabric_name[2] = 1794 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1795 fcf_rec->fabric_name[3] = 1796 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1797 fcf_rec->fabric_name[4] = 1798 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1799 fcf_rec->fabric_name[5] = 1800 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1801 fcf_rec->fabric_name[6] = 1802 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1803 fcf_rec->fabric_name[7] = 1804 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1805 /* Mac address */ 1806 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1807 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1808 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1809 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1810 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1811 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1812 /* FCF record index */ 1813 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1814 /* FCF record priority */ 1815 fcf_rec->priority = new_fcf_record->fip_priority; 1816 /* Switch name */ 1817 fcf_rec->switch_name[0] = 1818 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1819 fcf_rec->switch_name[1] = 1820 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1821 fcf_rec->switch_name[2] = 1822 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1823 fcf_rec->switch_name[3] = 1824 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1825 fcf_rec->switch_name[4] = 1826 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1827 fcf_rec->switch_name[5] = 1828 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1829 fcf_rec->switch_name[6] = 1830 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1831 fcf_rec->switch_name[7] = 1832 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1833 } 1834 1835 /** 1836 * __lpfc_update_fcf_record - Update driver fcf record 1837 * @phba: pointer to lpfc hba data structure. 1838 * @fcf_rec: pointer to driver fcf record. 1839 * @new_fcf_record: pointer to hba fcf record. 1840 * @addr_mode: address mode to be set to the driver fcf record. 1841 * @vlan_id: vlan tag to be set to the driver fcf record. 1842 * @flag: flag bits to be set to the driver fcf record. 1843 * 1844 * This routine updates the driver FCF record from the new HBA FCF record 1845 * together with the address mode, vlan_id, and other informations. This 1846 * routine is called with the hbalock held. 1847 **/ 1848 static void 1849 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1850 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1851 uint16_t vlan_id, uint32_t flag) 1852 { 1853 lockdep_assert_held(&phba->hbalock); 1854 1855 /* Copy the fields from the HBA's FCF record */ 1856 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1857 /* Update other fields of driver FCF record */ 1858 fcf_rec->addr_mode = addr_mode; 1859 fcf_rec->vlan_id = vlan_id; 1860 fcf_rec->flag |= (flag | RECORD_VALID); 1861 __lpfc_update_fcf_record_pri(phba, 1862 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1863 new_fcf_record); 1864 } 1865 1866 /** 1867 * lpfc_register_fcf - Register the FCF with hba. 1868 * @phba: pointer to lpfc hba data structure. 1869 * 1870 * This routine issues a register fcfi mailbox command to register 1871 * the fcf with HBA. 1872 **/ 1873 static void 1874 lpfc_register_fcf(struct lpfc_hba *phba) 1875 { 1876 LPFC_MBOXQ_t *fcf_mbxq; 1877 int rc; 1878 1879 spin_lock_irq(&phba->hbalock); 1880 /* If the FCF is not available do nothing. */ 1881 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1882 spin_unlock_irq(&phba->hbalock); 1883 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1884 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1885 return; 1886 } 1887 1888 /* The FCF is already registered, start discovery */ 1889 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1890 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1891 spin_unlock_irq(&phba->hbalock); 1892 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1893 if (phba->pport->port_state != LPFC_FLOGI && 1894 test_bit(FC_FABRIC, &phba->pport->fc_flag)) { 1895 set_bit(FCF_RR_INPROG, &phba->hba_flag); 1896 lpfc_initial_flogi(phba->pport); 1897 return; 1898 } 1899 return; 1900 } 1901 spin_unlock_irq(&phba->hbalock); 1902 1903 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1904 if (!fcf_mbxq) { 1905 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1906 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1907 return; 1908 } 1909 1910 lpfc_reg_fcfi(phba, fcf_mbxq); 1911 fcf_mbxq->vport = phba->pport; 1912 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1913 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1914 if (rc == MBX_NOT_FINISHED) { 1915 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1916 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1917 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1918 } 1919 1920 return; 1921 } 1922 1923 /** 1924 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1925 * @phba: pointer to lpfc hba data structure. 1926 * @new_fcf_record: pointer to fcf record. 1927 * @boot_flag: Indicates if this record used by boot bios. 1928 * @addr_mode: The address mode to be used by this FCF 1929 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1930 * 1931 * This routine compare the fcf record with connect list obtained from the 1932 * config region to decide if this FCF can be used for SAN discovery. It returns 1933 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1934 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1935 * is used by boot bios and addr_mode will indicate the addressing mode to be 1936 * used for this FCF when the function returns. 1937 * If the FCF record need to be used with a particular vlan id, the vlan is 1938 * set in the vlan_id on return of the function. If not VLAN tagging need to 1939 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1940 **/ 1941 static int 1942 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1943 struct fcf_record *new_fcf_record, 1944 uint32_t *boot_flag, uint32_t *addr_mode, 1945 uint16_t *vlan_id) 1946 { 1947 struct lpfc_fcf_conn_entry *conn_entry; 1948 int i, j, fcf_vlan_id = 0; 1949 1950 /* Find the lowest VLAN id in the FCF record */ 1951 for (i = 0; i < 512; i++) { 1952 if (new_fcf_record->vlan_bitmap[i]) { 1953 fcf_vlan_id = i * 8; 1954 j = 0; 1955 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1956 j++; 1957 fcf_vlan_id++; 1958 } 1959 break; 1960 } 1961 } 1962 1963 /* FCF not valid/available or solicitation in progress */ 1964 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1965 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1966 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1967 return 0; 1968 1969 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) { 1970 *boot_flag = 0; 1971 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1972 new_fcf_record); 1973 if (phba->valid_vlan) 1974 *vlan_id = phba->vlan_id; 1975 else 1976 *vlan_id = LPFC_FCOE_NULL_VID; 1977 return 1; 1978 } 1979 1980 /* 1981 * If there are no FCF connection table entry, driver connect to all 1982 * FCFs. 1983 */ 1984 if (list_empty(&phba->fcf_conn_rec_list)) { 1985 *boot_flag = 0; 1986 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1987 new_fcf_record); 1988 1989 /* 1990 * When there are no FCF connect entries, use driver's default 1991 * addressing mode - FPMA. 1992 */ 1993 if (*addr_mode & LPFC_FCF_FPMA) 1994 *addr_mode = LPFC_FCF_FPMA; 1995 1996 /* If FCF record report a vlan id use that vlan id */ 1997 if (fcf_vlan_id) 1998 *vlan_id = fcf_vlan_id; 1999 else 2000 *vlan_id = LPFC_FCOE_NULL_VID; 2001 return 1; 2002 } 2003 2004 list_for_each_entry(conn_entry, 2005 &phba->fcf_conn_rec_list, list) { 2006 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 2007 continue; 2008 2009 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 2010 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 2011 new_fcf_record)) 2012 continue; 2013 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 2014 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 2015 new_fcf_record)) 2016 continue; 2017 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 2018 /* 2019 * If the vlan bit map does not have the bit set for the 2020 * vlan id to be used, then it is not a match. 2021 */ 2022 if (!(new_fcf_record->vlan_bitmap 2023 [conn_entry->conn_rec.vlan_tag / 8] & 2024 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 2025 continue; 2026 } 2027 2028 /* 2029 * If connection record does not support any addressing mode, 2030 * skip the FCF record. 2031 */ 2032 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 2033 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2034 continue; 2035 2036 /* 2037 * Check if the connection record specifies a required 2038 * addressing mode. 2039 */ 2040 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2041 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2042 2043 /* 2044 * If SPMA required but FCF not support this continue. 2045 */ 2046 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2047 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2048 new_fcf_record) & LPFC_FCF_SPMA)) 2049 continue; 2050 2051 /* 2052 * If FPMA required but FCF not support this continue. 2053 */ 2054 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2055 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2056 new_fcf_record) & LPFC_FCF_FPMA)) 2057 continue; 2058 } 2059 2060 /* 2061 * This fcf record matches filtering criteria. 2062 */ 2063 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2064 *boot_flag = 1; 2065 else 2066 *boot_flag = 0; 2067 2068 /* 2069 * If user did not specify any addressing mode, or if the 2070 * preferred addressing mode specified by user is not supported 2071 * by FCF, allow fabric to pick the addressing mode. 2072 */ 2073 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2074 new_fcf_record); 2075 /* 2076 * If the user specified a required address mode, assign that 2077 * address mode 2078 */ 2079 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2080 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2081 *addr_mode = (conn_entry->conn_rec.flags & 2082 FCFCNCT_AM_SPMA) ? 2083 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2084 /* 2085 * If the user specified a preferred address mode, use the 2086 * addr mode only if FCF support the addr_mode. 2087 */ 2088 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2089 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2090 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2091 (*addr_mode & LPFC_FCF_SPMA)) 2092 *addr_mode = LPFC_FCF_SPMA; 2093 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2094 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2095 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2096 (*addr_mode & LPFC_FCF_FPMA)) 2097 *addr_mode = LPFC_FCF_FPMA; 2098 2099 /* If matching connect list has a vlan id, use it */ 2100 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2101 *vlan_id = conn_entry->conn_rec.vlan_tag; 2102 /* 2103 * If no vlan id is specified in connect list, use the vlan id 2104 * in the FCF record 2105 */ 2106 else if (fcf_vlan_id) 2107 *vlan_id = fcf_vlan_id; 2108 else 2109 *vlan_id = LPFC_FCOE_NULL_VID; 2110 2111 return 1; 2112 } 2113 2114 return 0; 2115 } 2116 2117 /** 2118 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2119 * @phba: pointer to lpfc hba data structure. 2120 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2121 * 2122 * This function check if there is any fcoe event pending while driver 2123 * scan FCF entries. If there is any pending event, it will restart the 2124 * FCF saning and return 1 else return 0. 2125 */ 2126 int 2127 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2128 { 2129 /* 2130 * If the Link is up and no FCoE events while in the 2131 * FCF discovery, no need to restart FCF discovery. 2132 */ 2133 if ((phba->link_state >= LPFC_LINK_UP) && 2134 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2135 return 0; 2136 2137 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2138 "2768 Pending link or FCF event during current " 2139 "handling of the previous event: link_state:x%x, " 2140 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2141 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2142 phba->fcoe_eventtag); 2143 2144 spin_lock_irq(&phba->hbalock); 2145 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2146 spin_unlock_irq(&phba->hbalock); 2147 2148 if (phba->link_state >= LPFC_LINK_UP) { 2149 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2150 "2780 Restart FCF table scan due to " 2151 "pending FCF event:evt_tag_at_scan:x%x, " 2152 "evt_tag_current:x%x\n", 2153 phba->fcoe_eventtag_at_fcf_scan, 2154 phba->fcoe_eventtag); 2155 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2156 } else { 2157 /* 2158 * Do not continue FCF discovery and clear FCF_TS_INPROG 2159 * flag 2160 */ 2161 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2162 "2833 Stop FCF discovery process due to link " 2163 "state change (x%x)\n", phba->link_state); 2164 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2165 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2166 spin_lock_irq(&phba->hbalock); 2167 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2168 spin_unlock_irq(&phba->hbalock); 2169 } 2170 2171 /* Unregister the currently registered FCF if required */ 2172 if (unreg_fcf) { 2173 spin_lock_irq(&phba->hbalock); 2174 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2175 spin_unlock_irq(&phba->hbalock); 2176 lpfc_sli4_unregister_fcf(phba); 2177 } 2178 return 1; 2179 } 2180 2181 /** 2182 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2183 * @phba: pointer to lpfc hba data structure. 2184 * @fcf_cnt: number of eligible fcf record seen so far. 2185 * 2186 * This function makes an running random selection decision on FCF record to 2187 * use through a sequence of @fcf_cnt eligible FCF records with equal 2188 * probability. To perform integer manunipulation of random numbers with 2189 * size unit32_t, a 16-bit random number returned from get_random_u16() is 2190 * taken as the random random number generated. 2191 * 2192 * Returns true when outcome is for the newly read FCF record should be 2193 * chosen; otherwise, return false when outcome is for keeping the previously 2194 * chosen FCF record. 2195 **/ 2196 static bool 2197 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2198 { 2199 uint32_t rand_num; 2200 2201 /* Get 16-bit uniform random number */ 2202 rand_num = get_random_u16(); 2203 2204 /* Decision with probability 1/fcf_cnt */ 2205 if ((fcf_cnt * rand_num) < 0xFFFF) 2206 return true; 2207 else 2208 return false; 2209 } 2210 2211 /** 2212 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2213 * @phba: pointer to lpfc hba data structure. 2214 * @mboxq: pointer to mailbox object. 2215 * @next_fcf_index: pointer to holder of next fcf index. 2216 * 2217 * This routine parses the non-embedded fcf mailbox command by performing the 2218 * necessarily error checking, non-embedded read FCF record mailbox command 2219 * SGE parsing, and endianness swapping. 2220 * 2221 * Returns the pointer to the new FCF record in the non-embedded mailbox 2222 * command DMA memory if successfully, other NULL. 2223 */ 2224 static struct fcf_record * 2225 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2226 uint16_t *next_fcf_index) 2227 { 2228 void *virt_addr; 2229 struct lpfc_mbx_sge sge; 2230 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2231 uint32_t shdr_status, shdr_add_status, if_type; 2232 union lpfc_sli4_cfg_shdr *shdr; 2233 struct fcf_record *new_fcf_record; 2234 2235 /* Get the first SGE entry from the non-embedded DMA memory. This 2236 * routine only uses a single SGE. 2237 */ 2238 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2239 if (unlikely(!mboxq->sge_array)) { 2240 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2241 "2524 Failed to get the non-embedded SGE " 2242 "virtual address\n"); 2243 return NULL; 2244 } 2245 virt_addr = mboxq->sge_array->addr[0]; 2246 2247 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2248 lpfc_sli_pcimem_bcopy(shdr, shdr, 2249 sizeof(union lpfc_sli4_cfg_shdr)); 2250 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2251 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2252 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2253 if (shdr_status || shdr_add_status) { 2254 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2255 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2256 lpfc_printf_log(phba, KERN_ERR, 2257 LOG_TRACE_EVENT, 2258 "2726 READ_FCF_RECORD Indicates empty " 2259 "FCF table.\n"); 2260 else 2261 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2262 "2521 READ_FCF_RECORD mailbox failed " 2263 "with status x%x add_status x%x, " 2264 "mbx\n", shdr_status, shdr_add_status); 2265 return NULL; 2266 } 2267 2268 /* Interpreting the returned information of the FCF record */ 2269 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2270 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2271 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2272 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2273 new_fcf_record = (struct fcf_record *)(virt_addr + 2274 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2275 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2276 offsetof(struct fcf_record, vlan_bitmap)); 2277 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2278 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2279 2280 return new_fcf_record; 2281 } 2282 2283 /** 2284 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2285 * @phba: pointer to lpfc hba data structure. 2286 * @fcf_record: pointer to the fcf record. 2287 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2288 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2289 * 2290 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2291 * enabled. 2292 **/ 2293 static void 2294 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2295 struct fcf_record *fcf_record, 2296 uint16_t vlan_id, 2297 uint16_t next_fcf_index) 2298 { 2299 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2300 "2764 READ_FCF_RECORD:\n" 2301 "\tFCF_Index : x%x\n" 2302 "\tFCF_Avail : x%x\n" 2303 "\tFCF_Valid : x%x\n" 2304 "\tFCF_SOL : x%x\n" 2305 "\tFIP_Priority : x%x\n" 2306 "\tMAC_Provider : x%x\n" 2307 "\tLowest VLANID : x%x\n" 2308 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2309 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2310 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2311 "\tNext_FCF_Index: x%x\n", 2312 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2313 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2314 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2315 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2316 fcf_record->fip_priority, 2317 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2318 vlan_id, 2319 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2320 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2321 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2322 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2323 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2324 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2325 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2326 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2327 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2328 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2329 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2330 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2331 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2332 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2333 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2334 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2335 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2336 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2337 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2338 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2339 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2340 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2341 next_fcf_index); 2342 } 2343 2344 /** 2345 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2346 * @phba: pointer to lpfc hba data structure. 2347 * @fcf_rec: pointer to an existing FCF record. 2348 * @new_fcf_record: pointer to a new FCF record. 2349 * @new_vlan_id: vlan id from the new FCF record. 2350 * 2351 * This function performs matching test of a new FCF record against an existing 2352 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2353 * will not be used as part of the FCF record matching criteria. 2354 * 2355 * Returns true if all the fields matching, otherwise returns false. 2356 */ 2357 static bool 2358 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2359 struct lpfc_fcf_rec *fcf_rec, 2360 struct fcf_record *new_fcf_record, 2361 uint16_t new_vlan_id) 2362 { 2363 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2364 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2365 return false; 2366 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2367 return false; 2368 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2369 return false; 2370 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2371 return false; 2372 if (fcf_rec->priority != new_fcf_record->fip_priority) 2373 return false; 2374 return true; 2375 } 2376 2377 /** 2378 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2379 * @vport: Pointer to vport object. 2380 * @fcf_index: index to next fcf. 2381 * 2382 * This function processing the roundrobin fcf failover to next fcf index. 2383 * When this function is invoked, there will be a current fcf registered 2384 * for flogi. 2385 * Return: 0 for continue retrying flogi on currently registered fcf; 2386 * 1 for stop flogi on currently registered fcf; 2387 */ 2388 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2389 { 2390 struct lpfc_hba *phba = vport->phba; 2391 int rc; 2392 2393 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2394 if (test_bit(HBA_DEVLOSS_TMO, &phba->hba_flag)) { 2395 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2396 "2872 Devloss tmo with no eligible " 2397 "FCF, unregister in-use FCF (x%x) " 2398 "and rescan FCF table\n", 2399 phba->fcf.current_rec.fcf_indx); 2400 lpfc_unregister_fcf_rescan(phba); 2401 goto stop_flogi_current_fcf; 2402 } 2403 /* Mark the end to FLOGI roundrobin failover */ 2404 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2405 /* Allow action to new fcf asynchronous event */ 2406 spin_lock_irq(&phba->hbalock); 2407 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2408 spin_unlock_irq(&phba->hbalock); 2409 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2410 "2865 No FCF available, stop roundrobin FCF " 2411 "failover and change port state:x%x/x%x\n", 2412 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2413 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2414 2415 if (!phba->fcf.fcf_redisc_attempted) { 2416 lpfc_unregister_fcf(phba); 2417 2418 rc = lpfc_sli4_redisc_fcf_table(phba); 2419 if (!rc) { 2420 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2421 "3195 Rediscover FCF table\n"); 2422 phba->fcf.fcf_redisc_attempted = 1; 2423 lpfc_sli4_clear_fcf_rr_bmask(phba); 2424 } else { 2425 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2426 "3196 Rediscover FCF table " 2427 "failed. Status:x%x\n", rc); 2428 } 2429 } else { 2430 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2431 "3197 Already rediscover FCF table " 2432 "attempted. No more retry\n"); 2433 } 2434 goto stop_flogi_current_fcf; 2435 } else { 2436 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2437 "2794 Try FLOGI roundrobin FCF failover to " 2438 "(x%x)\n", fcf_index); 2439 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2440 if (rc) 2441 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2442 "2761 FLOGI roundrobin FCF failover " 2443 "failed (rc:x%x) to read FCF (x%x)\n", 2444 rc, phba->fcf.current_rec.fcf_indx); 2445 else 2446 goto stop_flogi_current_fcf; 2447 } 2448 return 0; 2449 2450 stop_flogi_current_fcf: 2451 lpfc_can_disctmo(vport); 2452 return 1; 2453 } 2454 2455 /** 2456 * lpfc_sli4_fcf_pri_list_del 2457 * @phba: pointer to lpfc hba data structure. 2458 * @fcf_index: the index of the fcf record to delete 2459 * This routine checks the on list flag of the fcf_index to be deleted. 2460 * If it is one the list then it is removed from the list, and the flag 2461 * is cleared. This routine grab the hbalock before removing the fcf 2462 * record from the list. 2463 **/ 2464 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2465 uint16_t fcf_index) 2466 { 2467 struct lpfc_fcf_pri *new_fcf_pri; 2468 2469 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2470 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2471 "3058 deleting idx x%x pri x%x flg x%x\n", 2472 fcf_index, new_fcf_pri->fcf_rec.priority, 2473 new_fcf_pri->fcf_rec.flag); 2474 spin_lock_irq(&phba->hbalock); 2475 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2476 if (phba->fcf.current_rec.priority == 2477 new_fcf_pri->fcf_rec.priority) 2478 phba->fcf.eligible_fcf_cnt--; 2479 list_del_init(&new_fcf_pri->list); 2480 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2481 } 2482 spin_unlock_irq(&phba->hbalock); 2483 } 2484 2485 /** 2486 * lpfc_sli4_set_fcf_flogi_fail 2487 * @phba: pointer to lpfc hba data structure. 2488 * @fcf_index: the index of the fcf record to update 2489 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2490 * flag so the round robin selection for the particular priority level 2491 * will try a different fcf record that does not have this bit set. 2492 * If the fcf record is re-read for any reason this flag is cleared brfore 2493 * adding it to the priority list. 2494 **/ 2495 void 2496 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2497 { 2498 struct lpfc_fcf_pri *new_fcf_pri; 2499 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2500 spin_lock_irq(&phba->hbalock); 2501 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2502 spin_unlock_irq(&phba->hbalock); 2503 } 2504 2505 /** 2506 * lpfc_sli4_fcf_pri_list_add 2507 * @phba: pointer to lpfc hba data structure. 2508 * @fcf_index: the index of the fcf record to add 2509 * @new_fcf_record: pointer to a new FCF record. 2510 * This routine checks the priority of the fcf_index to be added. 2511 * If it is a lower priority than the current head of the fcf_pri list 2512 * then it is added to the list in the right order. 2513 * If it is the same priority as the current head of the list then it 2514 * is added to the head of the list and its bit in the rr_bmask is set. 2515 * If the fcf_index to be added is of a higher priority than the current 2516 * head of the list then the rr_bmask is cleared, its bit is set in the 2517 * rr_bmask and it is added to the head of the list. 2518 * returns: 2519 * 0=success 1=failure 2520 **/ 2521 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2522 uint16_t fcf_index, 2523 struct fcf_record *new_fcf_record) 2524 { 2525 uint16_t current_fcf_pri; 2526 uint16_t last_index; 2527 struct lpfc_fcf_pri *fcf_pri; 2528 struct lpfc_fcf_pri *next_fcf_pri; 2529 struct lpfc_fcf_pri *new_fcf_pri; 2530 int ret; 2531 2532 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2533 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2534 "3059 adding idx x%x pri x%x flg x%x\n", 2535 fcf_index, new_fcf_record->fip_priority, 2536 new_fcf_pri->fcf_rec.flag); 2537 spin_lock_irq(&phba->hbalock); 2538 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2539 list_del_init(&new_fcf_pri->list); 2540 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2541 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2542 if (list_empty(&phba->fcf.fcf_pri_list)) { 2543 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2544 ret = lpfc_sli4_fcf_rr_index_set(phba, 2545 new_fcf_pri->fcf_rec.fcf_index); 2546 goto out; 2547 } 2548 2549 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2550 LPFC_SLI4_FCF_TBL_INDX_MAX); 2551 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2552 ret = 0; /* Empty rr list */ 2553 goto out; 2554 } 2555 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2556 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2557 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2558 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2559 memset(phba->fcf.fcf_rr_bmask, 0, 2560 sizeof(*phba->fcf.fcf_rr_bmask)); 2561 /* fcfs_at_this_priority_level = 1; */ 2562 phba->fcf.eligible_fcf_cnt = 1; 2563 } else 2564 /* fcfs_at_this_priority_level++; */ 2565 phba->fcf.eligible_fcf_cnt++; 2566 ret = lpfc_sli4_fcf_rr_index_set(phba, 2567 new_fcf_pri->fcf_rec.fcf_index); 2568 goto out; 2569 } 2570 2571 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2572 &phba->fcf.fcf_pri_list, list) { 2573 if (new_fcf_pri->fcf_rec.priority <= 2574 fcf_pri->fcf_rec.priority) { 2575 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2576 list_add(&new_fcf_pri->list, 2577 &phba->fcf.fcf_pri_list); 2578 else 2579 list_add(&new_fcf_pri->list, 2580 &((struct lpfc_fcf_pri *) 2581 fcf_pri->list.prev)->list); 2582 ret = 0; 2583 goto out; 2584 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2585 || new_fcf_pri->fcf_rec.priority < 2586 next_fcf_pri->fcf_rec.priority) { 2587 list_add(&new_fcf_pri->list, &fcf_pri->list); 2588 ret = 0; 2589 goto out; 2590 } 2591 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2592 continue; 2593 2594 } 2595 ret = 1; 2596 out: 2597 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2598 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2599 spin_unlock_irq(&phba->hbalock); 2600 return ret; 2601 } 2602 2603 /** 2604 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2605 * @phba: pointer to lpfc hba data structure. 2606 * @mboxq: pointer to mailbox object. 2607 * 2608 * This function iterates through all the fcf records available in 2609 * HBA and chooses the optimal FCF record for discovery. After finding 2610 * the FCF for discovery it registers the FCF record and kicks start 2611 * discovery. 2612 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2613 * use an FCF record which matches fabric name and mac address of the 2614 * currently used FCF record. 2615 * If the driver supports only one FCF, it will try to use the FCF record 2616 * used by BOOT_BIOS. 2617 */ 2618 void 2619 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2620 { 2621 struct fcf_record *new_fcf_record; 2622 uint32_t boot_flag, addr_mode; 2623 uint16_t fcf_index, next_fcf_index; 2624 struct lpfc_fcf_rec *fcf_rec = NULL; 2625 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2626 bool select_new_fcf; 2627 int rc; 2628 2629 /* If there is pending FCoE event restart FCF table scan */ 2630 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2631 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2632 return; 2633 } 2634 2635 /* Parse the FCF record from the non-embedded mailbox command */ 2636 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2637 &next_fcf_index); 2638 if (!new_fcf_record) { 2639 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2640 "2765 Mailbox command READ_FCF_RECORD " 2641 "failed to retrieve a FCF record.\n"); 2642 /* Let next new FCF event trigger fast failover */ 2643 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2644 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2645 return; 2646 } 2647 2648 /* Check the FCF record against the connection list */ 2649 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2650 &addr_mode, &vlan_id); 2651 2652 /* Log the FCF record information if turned on */ 2653 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2654 next_fcf_index); 2655 2656 /* 2657 * If the fcf record does not match with connect list entries 2658 * read the next entry; otherwise, this is an eligible FCF 2659 * record for roundrobin FCF failover. 2660 */ 2661 if (!rc) { 2662 lpfc_sli4_fcf_pri_list_del(phba, 2663 bf_get(lpfc_fcf_record_fcf_index, 2664 new_fcf_record)); 2665 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2666 "2781 FCF (x%x) failed connection " 2667 "list check: (x%x/x%x/%x)\n", 2668 bf_get(lpfc_fcf_record_fcf_index, 2669 new_fcf_record), 2670 bf_get(lpfc_fcf_record_fcf_avail, 2671 new_fcf_record), 2672 bf_get(lpfc_fcf_record_fcf_valid, 2673 new_fcf_record), 2674 bf_get(lpfc_fcf_record_fcf_sol, 2675 new_fcf_record)); 2676 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2677 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2678 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2679 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2680 phba->fcf.current_rec.fcf_indx) { 2681 lpfc_printf_log(phba, KERN_ERR, 2682 LOG_TRACE_EVENT, 2683 "2862 FCF (x%x) matches property " 2684 "of in-use FCF (x%x)\n", 2685 bf_get(lpfc_fcf_record_fcf_index, 2686 new_fcf_record), 2687 phba->fcf.current_rec.fcf_indx); 2688 goto read_next_fcf; 2689 } 2690 /* 2691 * In case the current in-use FCF record becomes 2692 * invalid/unavailable during FCF discovery that 2693 * was not triggered by fast FCF failover process, 2694 * treat it as fast FCF failover. 2695 */ 2696 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2697 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2698 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2699 "2835 Invalid in-use FCF " 2700 "(x%x), enter FCF failover " 2701 "table scan.\n", 2702 phba->fcf.current_rec.fcf_indx); 2703 spin_lock_irq(&phba->hbalock); 2704 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2705 spin_unlock_irq(&phba->hbalock); 2706 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2707 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2708 LPFC_FCOE_FCF_GET_FIRST); 2709 return; 2710 } 2711 } 2712 goto read_next_fcf; 2713 } else { 2714 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2715 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2716 new_fcf_record); 2717 if (rc) 2718 goto read_next_fcf; 2719 } 2720 2721 /* 2722 * If this is not the first FCF discovery of the HBA, use last 2723 * FCF record for the discovery. The condition that a rescan 2724 * matches the in-use FCF record: fabric name, switch name, mac 2725 * address, and vlan_id. 2726 */ 2727 spin_lock_irq(&phba->hbalock); 2728 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2729 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2730 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2731 new_fcf_record, vlan_id)) { 2732 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2733 phba->fcf.current_rec.fcf_indx) { 2734 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2735 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2736 /* Stop FCF redisc wait timer */ 2737 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2738 phba); 2739 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2740 /* Fast failover, mark completed */ 2741 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2742 spin_unlock_irq(&phba->hbalock); 2743 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2744 "2836 New FCF matches in-use " 2745 "FCF (x%x), port_state:x%x, " 2746 "fc_flag:x%lx\n", 2747 phba->fcf.current_rec.fcf_indx, 2748 phba->pport->port_state, 2749 phba->pport->fc_flag); 2750 goto out; 2751 } else 2752 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2753 "2863 New FCF (x%x) matches " 2754 "property of in-use FCF (x%x)\n", 2755 bf_get(lpfc_fcf_record_fcf_index, 2756 new_fcf_record), 2757 phba->fcf.current_rec.fcf_indx); 2758 } 2759 /* 2760 * Read next FCF record from HBA searching for the matching 2761 * with in-use record only if not during the fast failover 2762 * period. In case of fast failover period, it shall try to 2763 * determine whether the FCF record just read should be the 2764 * next candidate. 2765 */ 2766 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2767 spin_unlock_irq(&phba->hbalock); 2768 goto read_next_fcf; 2769 } 2770 } 2771 /* 2772 * Update on failover FCF record only if it's in FCF fast-failover 2773 * period; otherwise, update on current FCF record. 2774 */ 2775 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2776 fcf_rec = &phba->fcf.failover_rec; 2777 else 2778 fcf_rec = &phba->fcf.current_rec; 2779 2780 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2781 /* 2782 * If the driver FCF record does not have boot flag 2783 * set and new hba fcf record has boot flag set, use 2784 * the new hba fcf record. 2785 */ 2786 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2787 /* Choose this FCF record */ 2788 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2789 "2837 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, BOOT_ENABLE); 2796 spin_unlock_irq(&phba->hbalock); 2797 goto read_next_fcf; 2798 } 2799 /* 2800 * If the driver FCF record has boot flag set and the 2801 * new hba FCF record does not have boot flag, read 2802 * the next FCF record. 2803 */ 2804 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2805 spin_unlock_irq(&phba->hbalock); 2806 goto read_next_fcf; 2807 } 2808 /* 2809 * If the new hba FCF record has lower priority value 2810 * than the driver FCF record, use the new record. 2811 */ 2812 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2813 /* Choose the new FCF record with lower priority */ 2814 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2815 "2838 Update current FCF record " 2816 "(x%x) with new FCF record (x%x)\n", 2817 fcf_rec->fcf_indx, 2818 bf_get(lpfc_fcf_record_fcf_index, 2819 new_fcf_record)); 2820 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2821 addr_mode, vlan_id, 0); 2822 /* Reset running random FCF selection count */ 2823 phba->fcf.eligible_fcf_cnt = 1; 2824 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2825 /* Update running random FCF selection count */ 2826 phba->fcf.eligible_fcf_cnt++; 2827 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2828 phba->fcf.eligible_fcf_cnt); 2829 if (select_new_fcf) { 2830 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2831 "2839 Update current FCF record " 2832 "(x%x) with new FCF record (x%x)\n", 2833 fcf_rec->fcf_indx, 2834 bf_get(lpfc_fcf_record_fcf_index, 2835 new_fcf_record)); 2836 /* Choose the new FCF by random selection */ 2837 __lpfc_update_fcf_record(phba, fcf_rec, 2838 new_fcf_record, 2839 addr_mode, vlan_id, 0); 2840 } 2841 } 2842 spin_unlock_irq(&phba->hbalock); 2843 goto read_next_fcf; 2844 } 2845 /* 2846 * This is the first suitable FCF record, choose this record for 2847 * initial best-fit FCF. 2848 */ 2849 if (fcf_rec) { 2850 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2851 "2840 Update initial FCF candidate " 2852 "with FCF (x%x)\n", 2853 bf_get(lpfc_fcf_record_fcf_index, 2854 new_fcf_record)); 2855 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2856 addr_mode, vlan_id, (boot_flag ? 2857 BOOT_ENABLE : 0)); 2858 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2859 /* Setup initial running random FCF selection count */ 2860 phba->fcf.eligible_fcf_cnt = 1; 2861 } 2862 spin_unlock_irq(&phba->hbalock); 2863 goto read_next_fcf; 2864 2865 read_next_fcf: 2866 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2867 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2868 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2869 /* 2870 * Case of FCF fast failover scan 2871 */ 2872 2873 /* 2874 * It has not found any suitable FCF record, cancel 2875 * FCF scan inprogress, and do nothing 2876 */ 2877 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2878 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2879 "2782 No suitable FCF found: " 2880 "(x%x/x%x)\n", 2881 phba->fcoe_eventtag_at_fcf_scan, 2882 bf_get(lpfc_fcf_record_fcf_index, 2883 new_fcf_record)); 2884 if (test_bit(HBA_DEVLOSS_TMO, 2885 &phba->hba_flag)) { 2886 clear_bit(FCF_TS_INPROG, 2887 &phba->hba_flag); 2888 /* Unregister in-use FCF and rescan */ 2889 lpfc_printf_log(phba, KERN_INFO, 2890 LOG_FIP, 2891 "2864 On devloss tmo " 2892 "unreg in-use FCF and " 2893 "rescan FCF table\n"); 2894 lpfc_unregister_fcf_rescan(phba); 2895 return; 2896 } 2897 /* 2898 * Let next new FCF event trigger fast failover 2899 */ 2900 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2901 return; 2902 } 2903 /* 2904 * It has found a suitable FCF record that is not 2905 * the same as in-use FCF record, unregister the 2906 * in-use FCF record, replace the in-use FCF record 2907 * with the new FCF record, mark FCF fast failover 2908 * completed, and then start register the new FCF 2909 * record. 2910 */ 2911 2912 /* Unregister the current in-use FCF record */ 2913 lpfc_unregister_fcf(phba); 2914 2915 /* Replace in-use record with the new record */ 2916 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2917 "2842 Replace in-use FCF (x%x) " 2918 "with failover FCF (x%x)\n", 2919 phba->fcf.current_rec.fcf_indx, 2920 phba->fcf.failover_rec.fcf_indx); 2921 memcpy(&phba->fcf.current_rec, 2922 &phba->fcf.failover_rec, 2923 sizeof(struct lpfc_fcf_rec)); 2924 /* 2925 * Mark the fast FCF failover rediscovery completed 2926 * and the start of the first round of the roundrobin 2927 * FCF failover. 2928 */ 2929 spin_lock_irq(&phba->hbalock); 2930 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2931 spin_unlock_irq(&phba->hbalock); 2932 /* Register to the new FCF record */ 2933 lpfc_register_fcf(phba); 2934 } else { 2935 /* 2936 * In case of transaction period to fast FCF failover, 2937 * do nothing when search to the end of the FCF table. 2938 */ 2939 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2940 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2941 return; 2942 2943 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2944 phba->fcf.fcf_flag & FCF_IN_USE) { 2945 /* 2946 * In case the current in-use FCF record no 2947 * longer existed during FCF discovery that 2948 * was not triggered by fast FCF failover 2949 * process, treat it as fast FCF failover. 2950 */ 2951 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2952 "2841 In-use FCF record (x%x) " 2953 "not reported, entering fast " 2954 "FCF failover mode scanning.\n", 2955 phba->fcf.current_rec.fcf_indx); 2956 spin_lock_irq(&phba->hbalock); 2957 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2958 spin_unlock_irq(&phba->hbalock); 2959 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2960 LPFC_FCOE_FCF_GET_FIRST); 2961 return; 2962 } 2963 /* Register to the new FCF record */ 2964 lpfc_register_fcf(phba); 2965 } 2966 } else 2967 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2968 return; 2969 2970 out: 2971 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2972 lpfc_register_fcf(phba); 2973 2974 return; 2975 } 2976 2977 /** 2978 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2979 * @phba: pointer to lpfc hba data structure. 2980 * @mboxq: pointer to mailbox object. 2981 * 2982 * This is the callback function for FLOGI failure roundrobin FCF failover 2983 * read FCF record mailbox command from the eligible FCF record bmask for 2984 * performing the failover. If the FCF read back is not valid/available, it 2985 * fails through to retrying FLOGI to the currently registered FCF again. 2986 * Otherwise, if the FCF read back is valid and available, it will set the 2987 * newly read FCF record to the failover FCF record, unregister currently 2988 * registered FCF record, copy the failover FCF record to the current 2989 * FCF record, and then register the current FCF record before proceeding 2990 * to trying FLOGI on the new failover FCF. 2991 */ 2992 void 2993 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2994 { 2995 struct fcf_record *new_fcf_record; 2996 uint32_t boot_flag, addr_mode; 2997 uint16_t next_fcf_index, fcf_index; 2998 uint16_t current_fcf_index; 2999 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3000 int rc; 3001 3002 /* If link state is not up, stop the roundrobin failover process */ 3003 if (phba->link_state < LPFC_LINK_UP) { 3004 spin_lock_irq(&phba->hbalock); 3005 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 3006 spin_unlock_irq(&phba->hbalock); 3007 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 3008 goto out; 3009 } 3010 3011 /* Parse the FCF record from the non-embedded mailbox command */ 3012 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3013 &next_fcf_index); 3014 if (!new_fcf_record) { 3015 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 3016 "2766 Mailbox command READ_FCF_RECORD " 3017 "failed to retrieve a FCF record. " 3018 "hba_flg x%lx fcf_flg x%x\n", phba->hba_flag, 3019 phba->fcf.fcf_flag); 3020 lpfc_unregister_fcf_rescan(phba); 3021 goto out; 3022 } 3023 3024 /* Get the needed parameters from FCF record */ 3025 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3026 &addr_mode, &vlan_id); 3027 3028 /* Log the FCF record information if turned on */ 3029 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3030 next_fcf_index); 3031 3032 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3033 if (!rc) { 3034 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3035 "2848 Remove ineligible FCF (x%x) from " 3036 "from roundrobin bmask\n", fcf_index); 3037 /* Clear roundrobin bmask bit for ineligible FCF */ 3038 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3039 /* Perform next round of roundrobin FCF failover */ 3040 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3041 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3042 if (rc) 3043 goto out; 3044 goto error_out; 3045 } 3046 3047 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3048 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3049 "2760 Perform FLOGI roundrobin FCF failover: " 3050 "FCF (x%x) back to FCF (x%x)\n", 3051 phba->fcf.current_rec.fcf_indx, fcf_index); 3052 /* Wait 500 ms before retrying FLOGI to current FCF */ 3053 msleep(500); 3054 lpfc_issue_init_vfi(phba->pport); 3055 goto out; 3056 } 3057 3058 /* Upload new FCF record to the failover FCF record */ 3059 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3060 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3061 phba->fcf.failover_rec.fcf_indx, fcf_index); 3062 spin_lock_irq(&phba->hbalock); 3063 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3064 new_fcf_record, addr_mode, vlan_id, 3065 (boot_flag ? BOOT_ENABLE : 0)); 3066 spin_unlock_irq(&phba->hbalock); 3067 3068 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3069 3070 /* Unregister the current in-use FCF record */ 3071 lpfc_unregister_fcf(phba); 3072 3073 /* Replace in-use record with the new record */ 3074 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3075 sizeof(struct lpfc_fcf_rec)); 3076 3077 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3078 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3079 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3080 3081 error_out: 3082 lpfc_register_fcf(phba); 3083 out: 3084 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3085 } 3086 3087 /** 3088 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3089 * @phba: pointer to lpfc hba data structure. 3090 * @mboxq: pointer to mailbox object. 3091 * 3092 * This is the callback function of read FCF record mailbox command for 3093 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3094 * failover when a new FCF event happened. If the FCF read back is 3095 * valid/available and it passes the connection list check, it updates 3096 * the bmask for the eligible FCF record for roundrobin failover. 3097 */ 3098 void 3099 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3100 { 3101 struct fcf_record *new_fcf_record; 3102 uint32_t boot_flag, addr_mode; 3103 uint16_t fcf_index, next_fcf_index; 3104 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3105 int rc; 3106 3107 /* If link state is not up, no need to proceed */ 3108 if (phba->link_state < LPFC_LINK_UP) 3109 goto out; 3110 3111 /* If FCF discovery period is over, no need to proceed */ 3112 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3113 goto out; 3114 3115 /* Parse the FCF record from the non-embedded mailbox command */ 3116 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3117 &next_fcf_index); 3118 if (!new_fcf_record) { 3119 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3120 "2767 Mailbox command READ_FCF_RECORD " 3121 "failed to retrieve a FCF record.\n"); 3122 goto out; 3123 } 3124 3125 /* Check the connection list for eligibility */ 3126 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3127 &addr_mode, &vlan_id); 3128 3129 /* Log the FCF record information if turned on */ 3130 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3131 next_fcf_index); 3132 3133 if (!rc) 3134 goto out; 3135 3136 /* Update the eligible FCF record index bmask */ 3137 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3138 3139 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3140 3141 out: 3142 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3143 } 3144 3145 /** 3146 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3147 * @phba: pointer to lpfc hba data structure. 3148 * @mboxq: pointer to mailbox data structure. 3149 * 3150 * This function handles completion of init vfi mailbox command. 3151 */ 3152 static void 3153 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3154 { 3155 struct lpfc_vport *vport = mboxq->vport; 3156 3157 /* 3158 * VFI not supported on interface type 0, just do the flogi 3159 * Also continue if the VFI is in use - just use the same one. 3160 */ 3161 if (mboxq->u.mb.mbxStatus && 3162 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3163 LPFC_SLI_INTF_IF_TYPE_0) && 3164 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3165 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3166 "2891 Init VFI mailbox failed 0x%x\n", 3167 mboxq->u.mb.mbxStatus); 3168 mempool_free(mboxq, phba->mbox_mem_pool); 3169 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3170 return; 3171 } 3172 3173 lpfc_initial_flogi(vport); 3174 mempool_free(mboxq, phba->mbox_mem_pool); 3175 return; 3176 } 3177 3178 /** 3179 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3180 * @vport: pointer to lpfc_vport data structure. 3181 * 3182 * This function issue a init_vfi mailbox command to initialize the VFI and 3183 * VPI for the physical port. 3184 */ 3185 void 3186 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3187 { 3188 LPFC_MBOXQ_t *mboxq; 3189 int rc; 3190 struct lpfc_hba *phba = vport->phba; 3191 3192 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3193 if (!mboxq) { 3194 lpfc_printf_vlog(vport, KERN_ERR, 3195 LOG_TRACE_EVENT, "2892 Failed to allocate " 3196 "init_vfi mailbox\n"); 3197 return; 3198 } 3199 lpfc_init_vfi(mboxq, vport); 3200 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3201 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3202 if (rc == MBX_NOT_FINISHED) { 3203 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3204 "2893 Failed to issue init_vfi mailbox\n"); 3205 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3206 } 3207 } 3208 3209 /** 3210 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3211 * @phba: pointer to lpfc hba data structure. 3212 * @mboxq: pointer to mailbox data structure. 3213 * 3214 * This function handles completion of init vpi mailbox command. 3215 */ 3216 void 3217 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3218 { 3219 struct lpfc_vport *vport = mboxq->vport; 3220 struct lpfc_nodelist *ndlp; 3221 3222 if (mboxq->u.mb.mbxStatus) { 3223 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3224 "2609 Init VPI mailbox failed 0x%x\n", 3225 mboxq->u.mb.mbxStatus); 3226 mempool_free(mboxq, phba->mbox_mem_pool); 3227 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3228 return; 3229 } 3230 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3231 3232 /* If this port is physical port or FDISC is done, do reg_vpi */ 3233 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3234 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3235 if (!ndlp) 3236 lpfc_printf_vlog(vport, KERN_ERR, 3237 LOG_TRACE_EVENT, 3238 "2731 Cannot find fabric " 3239 "controller node\n"); 3240 else 3241 lpfc_register_new_vport(phba, vport, ndlp); 3242 mempool_free(mboxq, phba->mbox_mem_pool); 3243 return; 3244 } 3245 3246 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3247 lpfc_initial_fdisc(vport); 3248 else { 3249 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3250 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3251 "2606 No NPIV Fabric support\n"); 3252 } 3253 mempool_free(mboxq, phba->mbox_mem_pool); 3254 return; 3255 } 3256 3257 /** 3258 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3259 * @vport: pointer to lpfc_vport data structure. 3260 * 3261 * This function issue a init_vpi mailbox command to initialize 3262 * VPI for the vport. 3263 */ 3264 void 3265 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3266 { 3267 LPFC_MBOXQ_t *mboxq; 3268 int rc, vpi; 3269 3270 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3271 vpi = lpfc_alloc_vpi(vport->phba); 3272 if (!vpi) { 3273 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3274 "3303 Failed to obtain vport vpi\n"); 3275 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3276 return; 3277 } 3278 vport->vpi = vpi; 3279 } 3280 3281 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3282 if (!mboxq) { 3283 lpfc_printf_vlog(vport, KERN_ERR, 3284 LOG_TRACE_EVENT, "2607 Failed to allocate " 3285 "init_vpi mailbox\n"); 3286 return; 3287 } 3288 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3289 mboxq->vport = vport; 3290 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3291 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3292 if (rc == MBX_NOT_FINISHED) { 3293 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3294 "2608 Failed to issue init_vpi mailbox\n"); 3295 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3296 } 3297 } 3298 3299 /** 3300 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3301 * @phba: pointer to lpfc hba data structure. 3302 * 3303 * This function loops through the list of vports on the @phba and issues an 3304 * FDISC if possible. 3305 */ 3306 void 3307 lpfc_start_fdiscs(struct lpfc_hba *phba) 3308 { 3309 struct lpfc_vport **vports; 3310 int i; 3311 3312 vports = lpfc_create_vport_work_array(phba); 3313 if (vports != NULL) { 3314 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3315 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3316 continue; 3317 /* There are no vpi for this vport */ 3318 if (vports[i]->vpi > phba->max_vpi) { 3319 lpfc_vport_set_state(vports[i], 3320 FC_VPORT_FAILED); 3321 continue; 3322 } 3323 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3324 lpfc_vport_set_state(vports[i], 3325 FC_VPORT_LINKDOWN); 3326 continue; 3327 } 3328 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, 3329 &vports[i]->fc_flag)) { 3330 lpfc_issue_init_vpi(vports[i]); 3331 continue; 3332 } 3333 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3334 lpfc_initial_fdisc(vports[i]); 3335 else { 3336 lpfc_vport_set_state(vports[i], 3337 FC_VPORT_NO_FABRIC_SUPP); 3338 lpfc_printf_vlog(vports[i], KERN_ERR, 3339 LOG_TRACE_EVENT, 3340 "0259 No NPIV " 3341 "Fabric support\n"); 3342 } 3343 } 3344 } 3345 lpfc_destroy_vport_work_array(phba, vports); 3346 } 3347 3348 void 3349 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3350 { 3351 struct lpfc_vport *vport = mboxq->vport; 3352 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3353 3354 /* 3355 * VFI not supported for interface type 0, so ignore any mailbox 3356 * error (except VFI in use) and continue with the discovery. 3357 */ 3358 if (mboxq->u.mb.mbxStatus && 3359 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3360 LPFC_SLI_INTF_IF_TYPE_0) && 3361 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3362 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3363 "2018 REG_VFI mbxStatus error x%x " 3364 "HBA state x%x\n", 3365 mboxq->u.mb.mbxStatus, vport->port_state); 3366 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3367 /* FLOGI failed, use loop map to make discovery list */ 3368 lpfc_disc_list_loopmap(vport); 3369 /* Start discovery */ 3370 lpfc_disc_start(vport); 3371 goto out_free_mem; 3372 } 3373 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3374 goto out_free_mem; 3375 } 3376 3377 /* If the VFI is already registered, there is nothing else to do 3378 * Unless this was a VFI update and we are in PT2PT mode, then 3379 * we should drop through to set the port state to ready. 3380 */ 3381 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) 3382 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3383 test_bit(FC_PT2PT, &vport->fc_flag))) 3384 goto out_free_mem; 3385 3386 /* The VPI is implicitly registered when the VFI is registered */ 3387 set_bit(FC_VFI_REGISTERED, &vport->fc_flag); 3388 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3389 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3390 spin_lock_irq(shost->host_lock); 3391 vport->vpi_state |= LPFC_VPI_REGISTERED; 3392 spin_unlock_irq(shost->host_lock); 3393 3394 /* In case SLI4 FC loopback test, we are ready */ 3395 if ((phba->sli_rev == LPFC_SLI_REV4) && 3396 (phba->link_flag & LS_LOOPBACK_MODE)) { 3397 phba->link_state = LPFC_HBA_READY; 3398 goto out_free_mem; 3399 } 3400 3401 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3402 "3313 cmpl reg vfi port_state:%x fc_flag:%lx " 3403 "myDid:%x alpacnt:%d LinkState:%x topology:%x\n", 3404 vport->port_state, vport->fc_flag, vport->fc_myDID, 3405 vport->phba->alpa_map[0], 3406 phba->link_state, phba->fc_topology); 3407 3408 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3409 /* 3410 * For private loop or for NPort pt2pt, 3411 * just start discovery and we are done. 3412 */ 3413 if (test_bit(FC_PT2PT, &vport->fc_flag) || 3414 (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 3415 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))) { 3416 3417 /* Use loop map to make discovery list */ 3418 lpfc_disc_list_loopmap(vport); 3419 /* Start discovery */ 3420 if (test_bit(FC_PT2PT, &vport->fc_flag)) 3421 vport->port_state = LPFC_VPORT_READY; 3422 else 3423 lpfc_disc_start(vport); 3424 } else { 3425 lpfc_start_fdiscs(phba); 3426 lpfc_do_scr_ns_plogi(phba, vport); 3427 } 3428 } 3429 3430 out_free_mem: 3431 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3432 } 3433 3434 static void 3435 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3436 { 3437 MAILBOX_t *mb = &pmb->u.mb; 3438 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3439 struct lpfc_vport *vport = pmb->vport; 3440 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3441 struct serv_parm *sp = &vport->fc_sparam; 3442 uint32_t ed_tov; 3443 3444 /* Check for error */ 3445 if (mb->mbxStatus) { 3446 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3447 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3448 "0319 READ_SPARAM mbxStatus error x%x " 3449 "hba state x%x>\n", 3450 mb->mbxStatus, vport->port_state); 3451 lpfc_linkdown(phba); 3452 goto out; 3453 } 3454 3455 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3456 sizeof (struct serv_parm)); 3457 3458 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3459 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3460 ed_tov = (ed_tov + 999999) / 1000000; 3461 3462 phba->fc_edtov = ed_tov; 3463 phba->fc_ratov = (2 * ed_tov) / 1000; 3464 if (phba->fc_ratov < FF_DEF_RATOV) { 3465 /* RA_TOV should be atleast 10sec for initial flogi */ 3466 phba->fc_ratov = FF_DEF_RATOV; 3467 } 3468 3469 lpfc_update_vport_wwn(vport); 3470 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3471 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3472 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3473 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3474 } 3475 3476 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3477 3478 /* Check if sending the FLOGI is being deferred to after we get 3479 * up to date CSPs from MBX_READ_SPARAM. 3480 */ 3481 if (test_bit(HBA_DEFER_FLOGI, &phba->hba_flag)) { 3482 lpfc_initial_flogi(vport); 3483 clear_bit(HBA_DEFER_FLOGI, &phba->hba_flag); 3484 } 3485 return; 3486 3487 out: 3488 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3489 lpfc_issue_clear_la(phba, vport); 3490 } 3491 3492 static void 3493 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3494 { 3495 struct lpfc_vport *vport = phba->pport; 3496 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3497 int i; 3498 int rc; 3499 struct fcf_record *fcf_record; 3500 unsigned long iflags; 3501 3502 spin_lock_irqsave(&phba->hbalock, iflags); 3503 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3504 3505 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 3506 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3507 case LPFC_LINK_SPEED_1GHZ: 3508 case LPFC_LINK_SPEED_2GHZ: 3509 case LPFC_LINK_SPEED_4GHZ: 3510 case LPFC_LINK_SPEED_8GHZ: 3511 case LPFC_LINK_SPEED_10GHZ: 3512 case LPFC_LINK_SPEED_16GHZ: 3513 case LPFC_LINK_SPEED_32GHZ: 3514 case LPFC_LINK_SPEED_64GHZ: 3515 case LPFC_LINK_SPEED_128GHZ: 3516 case LPFC_LINK_SPEED_256GHZ: 3517 break; 3518 default: 3519 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3520 break; 3521 } 3522 } 3523 3524 if (phba->fc_topology && 3525 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3526 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3527 "3314 Toplogy changed was 0x%x is 0x%x\n", 3528 phba->fc_topology, 3529 bf_get(lpfc_mbx_read_top_topology, la)); 3530 phba->fc_topology_changed = 1; 3531 } 3532 3533 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3534 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3535 3536 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3537 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3538 3539 /* if npiv is enabled and this adapter supports npiv log 3540 * a message that npiv is not supported in this topology 3541 */ 3542 if (phba->cfg_enable_npiv && phba->max_vpi) 3543 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3544 "1309 Link Up Event npiv not supported in loop " 3545 "topology\n"); 3546 /* Get Loop Map information */ 3547 if (bf_get(lpfc_mbx_read_top_il, la)) 3548 set_bit(FC_LBIT, &vport->fc_flag); 3549 3550 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3551 i = la->lilpBde64.tus.f.bdeSize; 3552 3553 if (i == 0) { 3554 phba->alpa_map[0] = 0; 3555 } else { 3556 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3557 int numalpa, j, k; 3558 union { 3559 uint8_t pamap[16]; 3560 struct { 3561 uint32_t wd1; 3562 uint32_t wd2; 3563 uint32_t wd3; 3564 uint32_t wd4; 3565 } pa; 3566 } un; 3567 numalpa = phba->alpa_map[0]; 3568 j = 0; 3569 while (j < numalpa) { 3570 memset(un.pamap, 0, 16); 3571 for (k = 1; j < numalpa; k++) { 3572 un.pamap[k - 1] = 3573 phba->alpa_map[j + 1]; 3574 j++; 3575 if (k == 16) 3576 break; 3577 } 3578 /* Link Up Event ALPA map */ 3579 lpfc_printf_log(phba, 3580 KERN_WARNING, 3581 LOG_LINK_EVENT, 3582 "1304 Link Up Event " 3583 "ALPA map Data: x%x " 3584 "x%x x%x x%x\n", 3585 un.pa.wd1, un.pa.wd2, 3586 un.pa.wd3, un.pa.wd4); 3587 } 3588 } 3589 } 3590 } else { 3591 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3592 if (phba->max_vpi && phba->cfg_enable_npiv && 3593 (phba->sli_rev >= LPFC_SLI_REV3)) 3594 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3595 } 3596 vport->fc_myDID = phba->fc_pref_DID; 3597 set_bit(FC_LBIT, &vport->fc_flag); 3598 } 3599 spin_unlock_irqrestore(&phba->hbalock, iflags); 3600 3601 lpfc_linkup(phba); 3602 sparam_mbox = NULL; 3603 3604 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3605 if (!sparam_mbox) 3606 goto out; 3607 3608 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3609 if (rc) { 3610 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3611 goto out; 3612 } 3613 sparam_mbox->vport = vport; 3614 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3615 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3616 if (rc == MBX_NOT_FINISHED) { 3617 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3618 goto out; 3619 } 3620 3621 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 3622 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3623 if (!cfglink_mbox) 3624 goto out; 3625 vport->port_state = LPFC_LOCAL_CFG_LINK; 3626 lpfc_config_link(phba, cfglink_mbox); 3627 cfglink_mbox->vport = vport; 3628 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3629 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3630 if (rc == MBX_NOT_FINISHED) { 3631 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3632 goto out; 3633 } 3634 } else { 3635 vport->port_state = LPFC_VPORT_UNKNOWN; 3636 /* 3637 * Add the driver's default FCF record at FCF index 0 now. This 3638 * is phase 1 implementation that support FCF index 0 and driver 3639 * defaults. 3640 */ 3641 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) { 3642 fcf_record = kzalloc(sizeof(struct fcf_record), 3643 GFP_KERNEL); 3644 if (unlikely(!fcf_record)) { 3645 lpfc_printf_log(phba, KERN_ERR, 3646 LOG_TRACE_EVENT, 3647 "2554 Could not allocate memory for " 3648 "fcf record\n"); 3649 rc = -ENODEV; 3650 goto out; 3651 } 3652 3653 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3654 LPFC_FCOE_FCF_DEF_INDEX); 3655 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3656 if (unlikely(rc)) { 3657 lpfc_printf_log(phba, KERN_ERR, 3658 LOG_TRACE_EVENT, 3659 "2013 Could not manually add FCF " 3660 "record 0, status %d\n", rc); 3661 rc = -ENODEV; 3662 kfree(fcf_record); 3663 goto out; 3664 } 3665 kfree(fcf_record); 3666 } 3667 /* 3668 * The driver is expected to do FIP/FCF. Call the port 3669 * and get the FCF Table. 3670 */ 3671 if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) 3672 return; 3673 /* This is the initial FCF discovery scan */ 3674 spin_lock_irqsave(&phba->hbalock, iflags); 3675 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3676 spin_unlock_irqrestore(&phba->hbalock, iflags); 3677 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3678 "2778 Start FCF table scan at linkup\n"); 3679 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3680 LPFC_FCOE_FCF_GET_FIRST); 3681 if (rc) { 3682 spin_lock_irqsave(&phba->hbalock, iflags); 3683 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3684 spin_unlock_irqrestore(&phba->hbalock, iflags); 3685 goto out; 3686 } 3687 /* Reset FCF roundrobin bmask for new discovery */ 3688 lpfc_sli4_clear_fcf_rr_bmask(phba); 3689 } 3690 3691 /* Prepare for LINK up registrations */ 3692 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3693 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3694 init_utsname()->nodename); 3695 return; 3696 out: 3697 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3698 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3699 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3700 vport->port_state, sparam_mbox, cfglink_mbox); 3701 lpfc_issue_clear_la(phba, vport); 3702 return; 3703 } 3704 3705 static void 3706 lpfc_enable_la(struct lpfc_hba *phba) 3707 { 3708 uint32_t control; 3709 struct lpfc_sli *psli = &phba->sli; 3710 spin_lock_irq(&phba->hbalock); 3711 psli->sli_flag |= LPFC_PROCESS_LA; 3712 if (phba->sli_rev <= LPFC_SLI_REV3) { 3713 control = readl(phba->HCregaddr); 3714 control |= HC_LAINT_ENA; 3715 writel(control, phba->HCregaddr); 3716 readl(phba->HCregaddr); /* flush */ 3717 } 3718 spin_unlock_irq(&phba->hbalock); 3719 } 3720 3721 static void 3722 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3723 { 3724 lpfc_linkdown(phba); 3725 lpfc_enable_la(phba); 3726 lpfc_unregister_unused_fcf(phba); 3727 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3728 } 3729 3730 3731 /* 3732 * This routine handles processing a READ_TOPOLOGY mailbox 3733 * command upon completion. It is setup in the LPFC_MBOXQ 3734 * as the completion routine when the command is 3735 * handed off to the SLI layer. SLI4 only. 3736 */ 3737 void 3738 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3739 { 3740 struct lpfc_vport *vport = pmb->vport; 3741 struct lpfc_mbx_read_top *la; 3742 struct lpfc_sli_ring *pring; 3743 MAILBOX_t *mb = &pmb->u.mb; 3744 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3745 uint8_t attn_type; 3746 3747 /* Unblock ELS traffic */ 3748 pring = lpfc_phba_elsring(phba); 3749 if (pring) 3750 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3751 3752 /* Check for error */ 3753 if (mb->mbxStatus) { 3754 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3755 "1307 READ_LA mbox error x%x state x%x\n", 3756 mb->mbxStatus, vport->port_state); 3757 lpfc_mbx_issue_link_down(phba); 3758 phba->link_state = LPFC_HBA_ERROR; 3759 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3760 } 3761 3762 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3763 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3764 3765 memcpy(&phba->alpa_map[0], mp->virt, 128); 3766 3767 if (bf_get(lpfc_mbx_read_top_pb, la)) 3768 set_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3769 else 3770 clear_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3771 3772 if (phba->fc_eventTag <= la->eventTag) { 3773 phba->fc_stat.LinkMultiEvent++; 3774 if (attn_type == LPFC_ATT_LINK_UP) 3775 if (phba->fc_eventTag != 0) 3776 lpfc_linkdown(phba); 3777 } 3778 3779 phba->fc_eventTag = la->eventTag; 3780 phba->link_events++; 3781 if (attn_type == LPFC_ATT_LINK_UP) { 3782 phba->fc_stat.LinkUp++; 3783 if (phba->link_flag & LS_LOOPBACK_MODE) { 3784 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3785 "1306 Link Up Event in loop back mode " 3786 "x%x received Data: x%x x%x x%x x%x\n", 3787 la->eventTag, phba->fc_eventTag, 3788 bf_get(lpfc_mbx_read_top_alpa_granted, 3789 la), 3790 bf_get(lpfc_mbx_read_top_link_spd, la), 3791 phba->alpa_map[0]); 3792 } else { 3793 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3794 "1303 Link Up Event x%x received " 3795 "Data: x%x x%x x%x x%x x%x\n", 3796 la->eventTag, phba->fc_eventTag, 3797 bf_get(lpfc_mbx_read_top_alpa_granted, 3798 la), 3799 bf_get(lpfc_mbx_read_top_link_spd, la), 3800 phba->alpa_map[0], 3801 bf_get(lpfc_mbx_read_top_fa, la)); 3802 } 3803 lpfc_mbx_process_link_up(phba, la); 3804 3805 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3806 lpfc_cmf_signal_init(phba); 3807 3808 if (phba->lmt & LMT_64Gb) 3809 lpfc_read_lds_params(phba); 3810 3811 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3812 attn_type == LPFC_ATT_UNEXP_WWPN) { 3813 phba->fc_stat.LinkDown++; 3814 if (phba->link_flag & LS_LOOPBACK_MODE) 3815 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3816 "1308 Link Down Event in loop back mode " 3817 "x%x received " 3818 "Data: x%x x%x x%lx\n", 3819 la->eventTag, phba->fc_eventTag, 3820 phba->pport->port_state, vport->fc_flag); 3821 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3822 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3823 "1313 Link Down Unexpected FA WWPN Event x%x " 3824 "received Data: x%x x%x x%lx x%x\n", 3825 la->eventTag, phba->fc_eventTag, 3826 phba->pport->port_state, vport->fc_flag, 3827 bf_get(lpfc_mbx_read_top_fa, la)); 3828 else 3829 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3830 "1305 Link Down Event x%x received " 3831 "Data: x%x x%x x%lx x%x\n", 3832 la->eventTag, phba->fc_eventTag, 3833 phba->pport->port_state, vport->fc_flag, 3834 bf_get(lpfc_mbx_read_top_fa, la)); 3835 lpfc_mbx_issue_link_down(phba); 3836 } 3837 3838 if ((phba->sli_rev < LPFC_SLI_REV4) && 3839 bf_get(lpfc_mbx_read_top_fa, la)) 3840 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3841 "1311 fa %d\n", 3842 bf_get(lpfc_mbx_read_top_fa, la)); 3843 3844 lpfc_mbx_cmpl_read_topology_free_mbuf: 3845 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3846 } 3847 3848 /* 3849 * This routine handles processing a REG_LOGIN mailbox 3850 * command upon completion. It is setup in the LPFC_MBOXQ 3851 * as the completion routine when the command is 3852 * handed off to the SLI layer. 3853 */ 3854 void 3855 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3856 { 3857 struct lpfc_vport *vport = pmb->vport; 3858 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3859 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 3860 3861 /* The driver calls the state machine with the pmb pointer 3862 * but wants to make sure a stale ctx_buf isn't acted on. 3863 * The ctx_buf is restored later and cleaned up. 3864 */ 3865 pmb->ctx_buf = NULL; 3866 pmb->ctx_ndlp = NULL; 3867 3868 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3869 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3870 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3871 kref_read(&ndlp->kref), 3872 ndlp); 3873 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3874 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3875 3876 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3877 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3878 /* We rcvd a rscn after issuing this 3879 * mbox reg login, we may have cycled 3880 * back through the state and be 3881 * back at reg login state so this 3882 * mbox needs to be ignored becase 3883 * there is another reg login in 3884 * process. 3885 */ 3886 spin_lock_irq(&ndlp->lock); 3887 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3888 spin_unlock_irq(&ndlp->lock); 3889 3890 /* 3891 * We cannot leave the RPI registered because 3892 * if we go thru discovery again for this ndlp 3893 * a subsequent REG_RPI will fail. 3894 */ 3895 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3896 lpfc_unreg_rpi(vport, ndlp); 3897 } 3898 3899 /* Call state machine */ 3900 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3901 pmb->ctx_buf = mp; 3902 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3903 3904 /* decrement the node reference count held for this callback 3905 * function. 3906 */ 3907 lpfc_nlp_put(ndlp); 3908 3909 return; 3910 } 3911 3912 static void 3913 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3914 { 3915 MAILBOX_t *mb = &pmb->u.mb; 3916 struct lpfc_vport *vport = pmb->vport; 3917 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3918 3919 switch (mb->mbxStatus) { 3920 case 0x0011: 3921 case 0x0020: 3922 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3923 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3924 mb->mbxStatus); 3925 break; 3926 /* If VPI is busy, reset the HBA */ 3927 case 0x9700: 3928 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3929 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3930 vport->vpi, mb->mbxStatus); 3931 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 3932 lpfc_workq_post_event(phba, NULL, NULL, 3933 LPFC_EVT_RESET_HBA); 3934 } 3935 3936 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3937 spin_lock_irq(shost->host_lock); 3938 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3939 spin_unlock_irq(shost->host_lock); 3940 mempool_free(pmb, phba->mbox_mem_pool); 3941 lpfc_cleanup_vports_rrqs(vport, NULL); 3942 /* 3943 * This shost reference might have been taken at the beginning of 3944 * lpfc_vport_delete() 3945 */ 3946 if (test_bit(FC_UNLOADING, &vport->load_flag) && vport != phba->pport) 3947 scsi_host_put(shost); 3948 } 3949 3950 int 3951 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3952 { 3953 struct lpfc_hba *phba = vport->phba; 3954 LPFC_MBOXQ_t *mbox; 3955 int rc; 3956 3957 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3958 if (!mbox) 3959 return 1; 3960 3961 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3962 mbox->vport = vport; 3963 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3964 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3965 if (rc == MBX_NOT_FINISHED) { 3966 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3967 "1800 Could not issue unreg_vpi\n"); 3968 mempool_free(mbox, phba->mbox_mem_pool); 3969 return rc; 3970 } 3971 return 0; 3972 } 3973 3974 static void 3975 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3976 { 3977 struct lpfc_vport *vport = pmb->vport; 3978 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3979 MAILBOX_t *mb = &pmb->u.mb; 3980 3981 switch (mb->mbxStatus) { 3982 case 0x0011: 3983 case 0x9601: 3984 case 0x9602: 3985 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3986 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3987 mb->mbxStatus); 3988 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3989 clear_bit(FC_FABRIC, &vport->fc_flag); 3990 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); 3991 vport->fc_myDID = 0; 3992 3993 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3994 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3995 if (phba->nvmet_support) 3996 lpfc_nvmet_update_targetport(phba); 3997 else 3998 lpfc_nvme_update_localport(vport); 3999 } 4000 goto out; 4001 } 4002 4003 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 4004 spin_lock_irq(shost->host_lock); 4005 vport->vpi_state |= LPFC_VPI_REGISTERED; 4006 spin_unlock_irq(shost->host_lock); 4007 vport->num_disc_nodes = 0; 4008 /* go thru NPR list and issue ELS PLOGIs */ 4009 if (atomic_read(&vport->fc_npr_cnt)) 4010 lpfc_els_disc_plogi(vport); 4011 4012 if (!vport->num_disc_nodes) { 4013 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 4014 lpfc_can_disctmo(vport); 4015 } 4016 vport->port_state = LPFC_VPORT_READY; 4017 4018 out: 4019 mempool_free(pmb, phba->mbox_mem_pool); 4020 return; 4021 } 4022 4023 /** 4024 * lpfc_create_static_vport - Read HBA config region to create static vports. 4025 * @phba: pointer to lpfc hba data structure. 4026 * 4027 * This routine issue a DUMP mailbox command for config region 22 to get 4028 * the list of static vports to be created. The function create vports 4029 * based on the information returned from the HBA. 4030 **/ 4031 void 4032 lpfc_create_static_vport(struct lpfc_hba *phba) 4033 { 4034 LPFC_MBOXQ_t *pmb = NULL; 4035 MAILBOX_t *mb; 4036 struct static_vport_info *vport_info; 4037 int mbx_wait_rc = 0, i; 4038 struct fc_vport_identifiers vport_id; 4039 struct fc_vport *new_fc_vport; 4040 struct Scsi_Host *shost; 4041 struct lpfc_vport *vport; 4042 uint16_t offset = 0; 4043 uint8_t *vport_buff; 4044 struct lpfc_dmabuf *mp; 4045 uint32_t byte_count = 0; 4046 4047 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4048 if (!pmb) { 4049 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4050 "0542 lpfc_create_static_vport failed to" 4051 " allocate mailbox memory\n"); 4052 return; 4053 } 4054 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4055 mb = &pmb->u.mb; 4056 4057 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4058 if (!vport_info) { 4059 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4060 "0543 lpfc_create_static_vport failed to" 4061 " allocate vport_info\n"); 4062 mempool_free(pmb, phba->mbox_mem_pool); 4063 return; 4064 } 4065 4066 vport_buff = (uint8_t *) vport_info; 4067 do { 4068 /* While loop iteration forces a free dma buffer from 4069 * the previous loop because the mbox is reused and 4070 * the dump routine is a single-use construct. 4071 */ 4072 if (pmb->ctx_buf) { 4073 mp = pmb->ctx_buf; 4074 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4075 kfree(mp); 4076 pmb->ctx_buf = NULL; 4077 } 4078 if (lpfc_dump_static_vport(phba, pmb, offset)) 4079 goto out; 4080 4081 pmb->vport = phba->pport; 4082 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4083 LPFC_MBOX_TMO); 4084 4085 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4086 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4087 "0544 lpfc_create_static_vport failed to" 4088 " issue dump mailbox command ret 0x%x " 4089 "status 0x%x\n", 4090 mbx_wait_rc, mb->mbxStatus); 4091 goto out; 4092 } 4093 4094 if (phba->sli_rev == LPFC_SLI_REV4) { 4095 byte_count = pmb->u.mqe.un.mb_words[5]; 4096 mp = pmb->ctx_buf; 4097 if (byte_count > sizeof(struct static_vport_info) - 4098 offset) 4099 byte_count = sizeof(struct static_vport_info) 4100 - offset; 4101 memcpy(vport_buff + offset, mp->virt, byte_count); 4102 offset += byte_count; 4103 } else { 4104 if (mb->un.varDmp.word_cnt > 4105 sizeof(struct static_vport_info) - offset) 4106 mb->un.varDmp.word_cnt = 4107 sizeof(struct static_vport_info) 4108 - offset; 4109 byte_count = mb->un.varDmp.word_cnt; 4110 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4111 vport_buff + offset, 4112 byte_count); 4113 4114 offset += byte_count; 4115 } 4116 4117 } while (byte_count && 4118 offset < sizeof(struct static_vport_info)); 4119 4120 4121 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4122 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4123 != VPORT_INFO_REV)) { 4124 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4125 "0545 lpfc_create_static_vport bad" 4126 " information header 0x%x 0x%x\n", 4127 le32_to_cpu(vport_info->signature), 4128 le32_to_cpu(vport_info->rev) & 4129 VPORT_INFO_REV_MASK); 4130 4131 goto out; 4132 } 4133 4134 shost = lpfc_shost_from_vport(phba->pport); 4135 4136 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4137 memset(&vport_id, 0, sizeof(vport_id)); 4138 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4139 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4140 if (!vport_id.port_name || !vport_id.node_name) 4141 continue; 4142 4143 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4144 vport_id.vport_type = FC_PORTTYPE_NPIV; 4145 vport_id.disable = false; 4146 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4147 4148 if (!new_fc_vport) { 4149 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4150 "0546 lpfc_create_static_vport failed to" 4151 " create vport\n"); 4152 continue; 4153 } 4154 4155 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4156 vport->vport_flag |= STATIC_VPORT; 4157 } 4158 4159 out: 4160 kfree(vport_info); 4161 if (mbx_wait_rc != MBX_TIMEOUT) 4162 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4163 } 4164 4165 /* 4166 * This routine handles processing a Fabric REG_LOGIN mailbox 4167 * command upon completion. It is setup in the LPFC_MBOXQ 4168 * as the completion routine when the command is 4169 * handed off to the SLI layer. 4170 */ 4171 void 4172 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4173 { 4174 struct lpfc_vport *vport = pmb->vport; 4175 MAILBOX_t *mb = &pmb->u.mb; 4176 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4177 4178 pmb->ctx_ndlp = NULL; 4179 4180 if (mb->mbxStatus) { 4181 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4182 "0258 Register Fabric login error: 0x%x\n", 4183 mb->mbxStatus); 4184 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4185 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4186 /* FLOGI failed, use loop map to make discovery list */ 4187 lpfc_disc_list_loopmap(vport); 4188 4189 /* Start discovery */ 4190 lpfc_disc_start(vport); 4191 /* Decrement the reference count to ndlp after the 4192 * reference to the ndlp are done. 4193 */ 4194 lpfc_nlp_put(ndlp); 4195 return; 4196 } 4197 4198 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4199 /* Decrement the reference count to ndlp after the reference 4200 * to the ndlp are done. 4201 */ 4202 lpfc_nlp_put(ndlp); 4203 return; 4204 } 4205 4206 if (phba->sli_rev < LPFC_SLI_REV4) 4207 ndlp->nlp_rpi = mb->un.varWords[0]; 4208 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4209 ndlp->nlp_type |= NLP_FABRIC; 4210 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4211 4212 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4213 /* when physical port receive logo donot start 4214 * vport discovery */ 4215 if (!test_and_clear_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) 4216 lpfc_start_fdiscs(phba); 4217 lpfc_do_scr_ns_plogi(phba, vport); 4218 } 4219 4220 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4221 4222 /* Drop the reference count from the mbox at the end after 4223 * all the current reference to the ndlp have been done. 4224 */ 4225 lpfc_nlp_put(ndlp); 4226 return; 4227 } 4228 4229 /* 4230 * This routine will issue a GID_FT for each FC4 Type supported 4231 * by the driver. ALL GID_FTs must complete before discovery is started. 4232 */ 4233 int 4234 lpfc_issue_gidft(struct lpfc_vport *vport) 4235 { 4236 /* Good status, issue CT Request to NameServer */ 4237 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4238 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4239 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4240 /* Cannot issue NameServer FCP Query, so finish up 4241 * discovery 4242 */ 4243 lpfc_printf_vlog(vport, KERN_ERR, 4244 LOG_TRACE_EVENT, 4245 "0604 %s FC TYPE %x %s\n", 4246 "Failed to issue GID_FT to ", 4247 FC_TYPE_FCP, 4248 "Finishing discovery."); 4249 return 0; 4250 } 4251 vport->gidft_inp++; 4252 } 4253 4254 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4255 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4256 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4257 /* Cannot issue NameServer NVME Query, so finish up 4258 * discovery 4259 */ 4260 lpfc_printf_vlog(vport, KERN_ERR, 4261 LOG_TRACE_EVENT, 4262 "0605 %s FC_TYPE %x %s %d\n", 4263 "Failed to issue GID_FT to ", 4264 FC_TYPE_NVME, 4265 "Finishing discovery: gidftinp ", 4266 vport->gidft_inp); 4267 if (vport->gidft_inp == 0) 4268 return 0; 4269 } else 4270 vport->gidft_inp++; 4271 } 4272 return vport->gidft_inp; 4273 } 4274 4275 /** 4276 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4277 * @vport: The virtual port for which this call is being executed. 4278 * 4279 * This routine will issue a GID_PT to get a list of all N_Ports 4280 * 4281 * Return value : 4282 * 0 - Failure to issue a GID_PT 4283 * 1 - GID_PT issued 4284 **/ 4285 int 4286 lpfc_issue_gidpt(struct lpfc_vport *vport) 4287 { 4288 /* Good status, issue CT Request to NameServer */ 4289 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4290 /* Cannot issue NameServer FCP Query, so finish up 4291 * discovery 4292 */ 4293 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4294 "0606 %s Port TYPE %x %s\n", 4295 "Failed to issue GID_PT to ", 4296 GID_PT_N_PORT, 4297 "Finishing discovery."); 4298 return 0; 4299 } 4300 vport->gidft_inp++; 4301 return 1; 4302 } 4303 4304 /* 4305 * This routine handles processing a NameServer REG_LOGIN mailbox 4306 * command upon completion. It is setup in the LPFC_MBOXQ 4307 * as the completion routine when the command is 4308 * handed off to the SLI layer. 4309 */ 4310 void 4311 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4312 { 4313 MAILBOX_t *mb = &pmb->u.mb; 4314 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4315 struct lpfc_vport *vport = pmb->vport; 4316 int rc; 4317 4318 pmb->ctx_ndlp = NULL; 4319 vport->gidft_inp = 0; 4320 4321 if (mb->mbxStatus) { 4322 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4323 "0260 Register NameServer error: 0x%x\n", 4324 mb->mbxStatus); 4325 4326 out: 4327 /* decrement the node reference count held for this 4328 * callback function. 4329 */ 4330 lpfc_nlp_put(ndlp); 4331 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4332 4333 /* If the node is not registered with the scsi or nvme 4334 * transport, remove the fabric node. The failed reg_login 4335 * is terminal and forces the removal of the last node 4336 * reference. 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_put(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 = 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 (test_bit(FC_UNLOADING, &vport->load_flag)) 4498 return; 4499 4500 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4501 if (!rport) { 4502 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4503 "Warning: fc_remote_port_add failed\n"); 4504 return; 4505 } 4506 4507 /* Successful port add. Complete initializing node data */ 4508 rport->maxframe_size = ndlp->nlp_maxframe; 4509 rport->supported_classes = ndlp->nlp_class_sup; 4510 rdata = rport->dd_data; 4511 rdata->pnode = lpfc_nlp_get(ndlp); 4512 if (!rdata->pnode) { 4513 dev_warn(&phba->pcidev->dev, 4514 "Warning - node ref failed. Unreg rport\n"); 4515 fc_remote_port_delete(rport); 4516 ndlp->rport = NULL; 4517 return; 4518 } 4519 4520 spin_lock_irqsave(&ndlp->lock, flags); 4521 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4522 spin_unlock_irqrestore(&ndlp->lock, flags); 4523 4524 if (ndlp->nlp_type & NLP_FCP_TARGET) 4525 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4526 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4527 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4528 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4529 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4530 if (ndlp->nlp_type & NLP_NVME_TARGET) 4531 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4532 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4533 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4534 4535 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4536 fc_remote_port_rolechg(rport, rport_ids.roles); 4537 4538 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4539 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4540 __func__, rport, rport->port_id, rport->roles, 4541 kref_read(&ndlp->kref)); 4542 4543 if ((rport->scsi_target_id != -1) && 4544 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4545 ndlp->nlp_sid = rport->scsi_target_id; 4546 } 4547 4548 return; 4549 } 4550 4551 static void 4552 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4553 { 4554 struct fc_rport *rport = ndlp->rport; 4555 struct lpfc_vport *vport = ndlp->vport; 4556 4557 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4558 return; 4559 4560 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4561 "rport delete: did:x%x flg:x%x type x%x", 4562 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4563 4564 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4565 "3184 rport unregister x%06x, rport x%px " 4566 "xptflg x%x refcnt %d\n", 4567 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4568 kref_read(&ndlp->kref)); 4569 4570 fc_remote_port_delete(rport); 4571 lpfc_nlp_put(ndlp); 4572 } 4573 4574 static void 4575 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4576 { 4577 switch (state) { 4578 case NLP_STE_UNUSED_NODE: 4579 atomic_add(count, &vport->fc_unused_cnt); 4580 break; 4581 case NLP_STE_PLOGI_ISSUE: 4582 atomic_add(count, &vport->fc_plogi_cnt); 4583 break; 4584 case NLP_STE_ADISC_ISSUE: 4585 atomic_add(count, &vport->fc_adisc_cnt); 4586 break; 4587 case NLP_STE_REG_LOGIN_ISSUE: 4588 atomic_add(count, &vport->fc_reglogin_cnt); 4589 break; 4590 case NLP_STE_PRLI_ISSUE: 4591 atomic_add(count, &vport->fc_prli_cnt); 4592 break; 4593 case NLP_STE_UNMAPPED_NODE: 4594 atomic_add(count, &vport->fc_unmap_cnt); 4595 break; 4596 case NLP_STE_MAPPED_NODE: 4597 atomic_add(count, &vport->fc_map_cnt); 4598 break; 4599 case NLP_STE_NPR_NODE: 4600 if (!atomic_read(&vport->fc_npr_cnt) && count == -1) 4601 atomic_set(&vport->fc_npr_cnt, 0); 4602 else 4603 atomic_add(count, &vport->fc_npr_cnt); 4604 break; 4605 } 4606 } 4607 4608 /* Register a node with backend if not already done */ 4609 void 4610 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4611 { 4612 unsigned long iflags; 4613 4614 lpfc_check_nlp_post_devloss(vport, ndlp); 4615 4616 spin_lock_irqsave(&ndlp->lock, iflags); 4617 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4618 /* Already registered with backend, trigger rescan */ 4619 spin_unlock_irqrestore(&ndlp->lock, iflags); 4620 4621 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4622 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4623 lpfc_nvme_rescan_port(vport, ndlp); 4624 } 4625 return; 4626 } 4627 4628 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4629 spin_unlock_irqrestore(&ndlp->lock, iflags); 4630 4631 if (lpfc_valid_xpt_node(ndlp)) { 4632 vport->phba->nport_event_cnt++; 4633 /* 4634 * Tell the fc transport about the port, if we haven't 4635 * already. If we have, and it's a scsi entity, be 4636 */ 4637 lpfc_register_remote_port(vport, ndlp); 4638 } 4639 4640 /* We are done if we do not have any NVME remote node */ 4641 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4642 return; 4643 4644 /* Notify the NVME transport of this new rport. */ 4645 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4646 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4647 if (vport->phba->nvmet_support == 0) { 4648 /* Register this rport with the transport. 4649 * Only NVME Target Rports are registered with 4650 * the transport. 4651 */ 4652 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4653 vport->phba->nport_event_cnt++; 4654 lpfc_nvme_register_port(vport, ndlp); 4655 } 4656 } else { 4657 /* Just take an NDLP ref count since the 4658 * target does not register rports. 4659 */ 4660 lpfc_nlp_get(ndlp); 4661 } 4662 } 4663 } 4664 4665 /* Unregister a node with backend if not already done */ 4666 void 4667 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4668 { 4669 unsigned long iflags; 4670 4671 spin_lock_irqsave(&ndlp->lock, iflags); 4672 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4673 spin_unlock_irqrestore(&ndlp->lock, iflags); 4674 lpfc_printf_vlog(vport, KERN_INFO, 4675 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4676 "0999 %s Not regd: ndlp x%px rport x%px DID " 4677 "x%x FLG x%x XPT x%x\n", 4678 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4679 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4680 return; 4681 } 4682 4683 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4684 spin_unlock_irqrestore(&ndlp->lock, iflags); 4685 4686 if (ndlp->rport && 4687 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4688 vport->phba->nport_event_cnt++; 4689 lpfc_unregister_remote_port(ndlp); 4690 } else if (!ndlp->rport) { 4691 lpfc_printf_vlog(vport, KERN_INFO, 4692 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4693 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4694 " XPT x%x refcnt %u\n", 4695 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4696 ndlp->fc4_xpt_flags, 4697 kref_read(&ndlp->kref)); 4698 } 4699 4700 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4701 vport->phba->nport_event_cnt++; 4702 if (vport->phba->nvmet_support == 0) { 4703 /* Start devloss if target. */ 4704 if (ndlp->nlp_type & NLP_NVME_TARGET) 4705 lpfc_nvme_unregister_port(vport, ndlp); 4706 } else { 4707 /* NVMET has no upcall. */ 4708 lpfc_nlp_put(ndlp); 4709 } 4710 } 4711 4712 } 4713 4714 /* 4715 * Adisc state change handling 4716 */ 4717 static void 4718 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4719 int new_state) 4720 { 4721 switch (new_state) { 4722 /* 4723 * Any state to ADISC_ISSUE 4724 * Do nothing, adisc cmpl handling will trigger state changes 4725 */ 4726 case NLP_STE_ADISC_ISSUE: 4727 break; 4728 4729 /* 4730 * ADISC_ISSUE to mapped states 4731 * Trigger a registration with backend, it will be nop if 4732 * already registered 4733 */ 4734 case NLP_STE_UNMAPPED_NODE: 4735 ndlp->nlp_type |= NLP_FC_NODE; 4736 fallthrough; 4737 case NLP_STE_MAPPED_NODE: 4738 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4739 lpfc_nlp_reg_node(vport, ndlp); 4740 break; 4741 4742 /* 4743 * ADISC_ISSUE to non-mapped states 4744 * We are moving from ADISC_ISSUE to a non-mapped state because 4745 * ADISC failed, we would have skipped unregistering with 4746 * backend, attempt it now 4747 */ 4748 case NLP_STE_NPR_NODE: 4749 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4750 fallthrough; 4751 default: 4752 lpfc_nlp_unreg_node(vport, ndlp); 4753 break; 4754 } 4755 4756 } 4757 4758 static void 4759 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4760 int old_state, int new_state) 4761 { 4762 /* Trap ADISC changes here */ 4763 if (new_state == NLP_STE_ADISC_ISSUE || 4764 old_state == NLP_STE_ADISC_ISSUE) { 4765 lpfc_handle_adisc_state(vport, ndlp, new_state); 4766 return; 4767 } 4768 4769 if (new_state == NLP_STE_UNMAPPED_NODE) { 4770 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4771 ndlp->nlp_type |= NLP_FC_NODE; 4772 } 4773 if (new_state == NLP_STE_MAPPED_NODE) 4774 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4775 if (new_state == NLP_STE_NPR_NODE) 4776 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4777 4778 /* Reg/Unreg for FCP and NVME Transport interface */ 4779 if ((old_state == NLP_STE_MAPPED_NODE || 4780 old_state == NLP_STE_UNMAPPED_NODE)) { 4781 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4782 * if linkup. In linkdown do unreg_node 4783 */ 4784 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4785 !lpfc_is_link_up(vport->phba)) 4786 lpfc_nlp_unreg_node(vport, ndlp); 4787 } 4788 4789 if (new_state == NLP_STE_MAPPED_NODE || 4790 new_state == NLP_STE_UNMAPPED_NODE) 4791 lpfc_nlp_reg_node(vport, ndlp); 4792 4793 /* 4794 * If the node just added to Mapped list was an FCP target, 4795 * but the remote port registration failed or assigned a target 4796 * id outside the presentable range - move the node to the 4797 * Unmapped List. 4798 */ 4799 if ((new_state == NLP_STE_MAPPED_NODE) && 4800 (ndlp->nlp_type & NLP_FCP_TARGET) && 4801 (!ndlp->rport || 4802 ndlp->rport->scsi_target_id == -1 || 4803 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4804 spin_lock_irq(&ndlp->lock); 4805 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4806 spin_unlock_irq(&ndlp->lock); 4807 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4808 } 4809 } 4810 4811 static char * 4812 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4813 { 4814 static char *states[] = { 4815 [NLP_STE_UNUSED_NODE] = "UNUSED", 4816 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4817 [NLP_STE_ADISC_ISSUE] = "ADISC", 4818 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4819 [NLP_STE_PRLI_ISSUE] = "PRLI", 4820 [NLP_STE_LOGO_ISSUE] = "LOGO", 4821 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4822 [NLP_STE_MAPPED_NODE] = "MAPPED", 4823 [NLP_STE_NPR_NODE] = "NPR", 4824 }; 4825 4826 if (state < NLP_STE_MAX_STATE && states[state]) 4827 strscpy(buffer, states[state], size); 4828 else 4829 snprintf(buffer, size, "unknown (%d)", state); 4830 return buffer; 4831 } 4832 4833 void 4834 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4835 int state) 4836 { 4837 int old_state = ndlp->nlp_state; 4838 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4839 char name1[16], name2[16]; 4840 unsigned long iflags; 4841 4842 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4843 "0904 NPort state transition x%06x, %s -> %s\n", 4844 ndlp->nlp_DID, 4845 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4846 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4847 4848 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4849 "node statechg did:x%x old:%d ste:%d", 4850 ndlp->nlp_DID, old_state, state); 4851 4852 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4853 state != NLP_STE_UNUSED_NODE) { 4854 ndlp->nlp_flag &= ~NLP_DROPPED; 4855 lpfc_nlp_get(ndlp); 4856 } 4857 4858 if (old_state == NLP_STE_NPR_NODE && 4859 state != NLP_STE_NPR_NODE) 4860 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4861 if (old_state == NLP_STE_UNMAPPED_NODE) { 4862 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4863 ndlp->nlp_type &= ~NLP_FC_NODE; 4864 } 4865 4866 if (list_empty(&ndlp->nlp_listp)) { 4867 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4868 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4869 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4870 } else if (old_state) 4871 lpfc_nlp_counters(vport, old_state, -1); 4872 4873 ndlp->nlp_state = state; 4874 lpfc_nlp_counters(vport, state, 1); 4875 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4876 } 4877 4878 void 4879 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4880 { 4881 unsigned long iflags; 4882 4883 if (list_empty(&ndlp->nlp_listp)) { 4884 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4885 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4886 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4887 } 4888 } 4889 4890 void 4891 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4892 { 4893 unsigned long iflags; 4894 4895 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4896 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4897 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4898 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4899 list_del_init(&ndlp->nlp_listp); 4900 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4901 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4902 NLP_STE_UNUSED_NODE); 4903 } 4904 4905 /** 4906 * lpfc_initialize_node - Initialize all fields of node object 4907 * @vport: Pointer to Virtual Port object. 4908 * @ndlp: Pointer to FC node object. 4909 * @did: FC_ID of the node. 4910 * 4911 * This function is always called when node object need to be initialized. 4912 * It initializes all the fields of the node object. Although the reference 4913 * to phba from @ndlp can be obtained indirectly through it's reference to 4914 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4915 * to the life-span of the @ndlp might go beyond the existence of @vport as 4916 * the final release of ndlp is determined by its reference count. And, the 4917 * operation on @ndlp needs the reference to phba. 4918 **/ 4919 static inline void 4920 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4921 uint32_t did) 4922 { 4923 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4924 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4925 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4926 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4927 4928 ndlp->nlp_DID = did; 4929 ndlp->vport = vport; 4930 ndlp->phba = vport->phba; 4931 ndlp->nlp_sid = NLP_NO_SID; 4932 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4933 kref_init(&ndlp->kref); 4934 atomic_set(&ndlp->cmd_pending, 0); 4935 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4936 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4937 } 4938 4939 void 4940 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4941 { 4942 /* 4943 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4944 * be used when lpfc wants to remove the "last" lpfc_nlp_put() to 4945 * release the ndlp from the vport when conditions are correct. 4946 */ 4947 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4948 return; 4949 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4950 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4951 lpfc_cleanup_vports_rrqs(vport, ndlp); 4952 lpfc_unreg_rpi(vport, ndlp); 4953 } 4954 4955 /* NLP_DROPPED means another thread already removed the initial 4956 * reference from lpfc_nlp_init. If set, don't drop it again and 4957 * introduce an imbalance. 4958 */ 4959 spin_lock_irq(&ndlp->lock); 4960 if (!(ndlp->nlp_flag & NLP_DROPPED)) { 4961 ndlp->nlp_flag |= NLP_DROPPED; 4962 spin_unlock_irq(&ndlp->lock); 4963 lpfc_nlp_put(ndlp); 4964 return; 4965 } 4966 spin_unlock_irq(&ndlp->lock); 4967 } 4968 4969 /* 4970 * Start / ReStart rescue timer for Discovery / RSCN handling 4971 */ 4972 void 4973 lpfc_set_disctmo(struct lpfc_vport *vport) 4974 { 4975 struct lpfc_hba *phba = vport->phba; 4976 uint32_t tmo; 4977 4978 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4979 /* For FAN, timeout should be greater than edtov */ 4980 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4981 } else { 4982 /* Normal discovery timeout should be > than ELS/CT timeout 4983 * FC spec states we need 3 * ratov for CT requests 4984 */ 4985 tmo = ((phba->fc_ratov * 3) + 3); 4986 } 4987 4988 4989 if (!timer_pending(&vport->fc_disctmo)) { 4990 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4991 "set disc timer: tmo:x%x state:x%x flg:x%x", 4992 tmo, vport->port_state, vport->fc_flag); 4993 } 4994 4995 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 4996 set_bit(FC_DISC_TMO, &vport->fc_flag); 4997 4998 /* Start Discovery Timer state <hba_state> */ 4999 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5000 "0247 Start Discovery Timer state x%x " 5001 "Data: x%x x%lx x%x x%x\n", 5002 vport->port_state, tmo, 5003 (unsigned long)&vport->fc_disctmo, 5004 atomic_read(&vport->fc_plogi_cnt), 5005 atomic_read(&vport->fc_adisc_cnt)); 5006 5007 return; 5008 } 5009 5010 /* 5011 * Cancel rescue timer for Discovery / RSCN handling 5012 */ 5013 int 5014 lpfc_can_disctmo(struct lpfc_vport *vport) 5015 { 5016 unsigned long iflags; 5017 5018 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5019 "can disc timer: state:x%x rtry:x%x flg:x%x", 5020 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5021 5022 /* Turn off discovery timer if its running */ 5023 if (test_bit(FC_DISC_TMO, &vport->fc_flag) || 5024 timer_pending(&vport->fc_disctmo)) { 5025 clear_bit(FC_DISC_TMO, &vport->fc_flag); 5026 del_timer_sync(&vport->fc_disctmo); 5027 spin_lock_irqsave(&vport->work_port_lock, iflags); 5028 vport->work_port_events &= ~WORKER_DISC_TMO; 5029 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5030 } 5031 5032 /* Cancel Discovery Timer state <hba_state> */ 5033 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5034 "0248 Cancel Discovery Timer state x%x " 5035 "Data: x%lx x%x x%x\n", 5036 vport->port_state, vport->fc_flag, 5037 atomic_read(&vport->fc_plogi_cnt), 5038 atomic_read(&vport->fc_adisc_cnt)); 5039 return 0; 5040 } 5041 5042 /* 5043 * Check specified ring for outstanding IOCB on the SLI queue 5044 * Return true if iocb matches the specified nport 5045 */ 5046 int 5047 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5048 struct lpfc_sli_ring *pring, 5049 struct lpfc_iocbq *iocb, 5050 struct lpfc_nodelist *ndlp) 5051 { 5052 struct lpfc_vport *vport = ndlp->vport; 5053 u8 ulp_command; 5054 u16 ulp_context; 5055 u32 remote_id; 5056 5057 if (iocb->vport != vport) 5058 return 0; 5059 5060 ulp_command = get_job_cmnd(phba, iocb); 5061 ulp_context = get_job_ulpcontext(phba, iocb); 5062 remote_id = get_job_els_rsp64_did(phba, iocb); 5063 5064 if (pring->ringno == LPFC_ELS_RING) { 5065 switch (ulp_command) { 5066 case CMD_GEN_REQUEST64_CR: 5067 if (iocb->ndlp == ndlp) 5068 return 1; 5069 fallthrough; 5070 case CMD_ELS_REQUEST64_CR: 5071 if (remote_id == ndlp->nlp_DID) 5072 return 1; 5073 fallthrough; 5074 case CMD_XMIT_ELS_RSP64_CX: 5075 if (iocb->ndlp == ndlp) 5076 return 1; 5077 } 5078 } else if (pring->ringno == LPFC_FCP_RING) { 5079 /* Skip match check if waiting to relogin to FCP target */ 5080 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5081 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5082 return 0; 5083 } 5084 if (ulp_context == ndlp->nlp_rpi) 5085 return 1; 5086 } 5087 return 0; 5088 } 5089 5090 static void 5091 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5092 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5093 struct list_head *dequeue_list) 5094 { 5095 struct lpfc_iocbq *iocb, *next_iocb; 5096 5097 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5098 /* Check to see if iocb matches the nport */ 5099 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5100 /* match, dequeue */ 5101 list_move_tail(&iocb->list, dequeue_list); 5102 } 5103 } 5104 5105 static void 5106 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5107 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5108 { 5109 struct lpfc_sli *psli = &phba->sli; 5110 uint32_t i; 5111 5112 spin_lock_irq(&phba->hbalock); 5113 for (i = 0; i < psli->num_rings; i++) 5114 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5115 dequeue_list); 5116 spin_unlock_irq(&phba->hbalock); 5117 } 5118 5119 static void 5120 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5121 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5122 { 5123 struct lpfc_sli_ring *pring; 5124 struct lpfc_queue *qp = NULL; 5125 5126 spin_lock_irq(&phba->hbalock); 5127 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5128 pring = qp->pring; 5129 if (!pring) 5130 continue; 5131 spin_lock(&pring->ring_lock); 5132 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5133 spin_unlock(&pring->ring_lock); 5134 } 5135 spin_unlock_irq(&phba->hbalock); 5136 } 5137 5138 /* 5139 * Free resources / clean up outstanding I/Os 5140 * associated with nlp_rpi in the LPFC_NODELIST entry. 5141 */ 5142 static int 5143 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5144 { 5145 LIST_HEAD(completions); 5146 5147 lpfc_fabric_abort_nport(ndlp); 5148 5149 /* 5150 * Everything that matches on txcmplq will be returned 5151 * by firmware with a no rpi error. 5152 */ 5153 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5154 if (phba->sli_rev != LPFC_SLI_REV4) 5155 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5156 else 5157 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5158 } 5159 5160 /* Cancel all the IOCBs from the completions list */ 5161 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5162 IOERR_SLI_ABORTED); 5163 5164 return 0; 5165 } 5166 5167 /** 5168 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5169 * @phba: Pointer to HBA context object. 5170 * @pmb: Pointer to mailbox object. 5171 * 5172 * This function will issue an ELS LOGO command after completing 5173 * the UNREG_RPI. 5174 **/ 5175 static void 5176 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5177 { 5178 struct lpfc_vport *vport = pmb->vport; 5179 struct lpfc_nodelist *ndlp; 5180 5181 ndlp = pmb->ctx_ndlp; 5182 if (!ndlp) 5183 return; 5184 lpfc_issue_els_logo(vport, ndlp, 0); 5185 5186 /* Check to see if there are any deferred events to process */ 5187 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5188 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5189 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5190 "1434 UNREG cmpl deferred logo x%x " 5191 "on NPort x%x Data: x%x x%px\n", 5192 ndlp->nlp_rpi, ndlp->nlp_DID, 5193 ndlp->nlp_defer_did, ndlp); 5194 5195 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5196 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5197 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5198 } else { 5199 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5200 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5201 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5202 spin_lock_irq(&ndlp->lock); 5203 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5204 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5205 spin_unlock_irq(&ndlp->lock); 5206 } 5207 spin_lock_irq(&ndlp->lock); 5208 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5209 spin_unlock_irq(&ndlp->lock); 5210 } 5211 5212 /* The node has an outstanding reference for the unreg. Now 5213 * that the LOGO action and cleanup are finished, release 5214 * resources. 5215 */ 5216 lpfc_nlp_put(ndlp); 5217 mempool_free(pmb, phba->mbox_mem_pool); 5218 } 5219 5220 /* 5221 * Sets the mailbox completion handler to be used for the 5222 * unreg_rpi command. The handler varies based on the state of 5223 * the port and what will be happening to the rpi next. 5224 */ 5225 static void 5226 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5227 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5228 { 5229 unsigned long iflags; 5230 5231 /* Driver always gets a reference on the mailbox job 5232 * in support of async jobs. 5233 */ 5234 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5235 if (!mbox->ctx_ndlp) 5236 return; 5237 5238 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5239 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5240 5241 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5242 !test_bit(FC_UNLOADING, &vport->load_flag) && 5243 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5244 LPFC_SLI_INTF_IF_TYPE_2) && 5245 (kref_read(&ndlp->kref) > 0)) { 5246 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5247 } else { 5248 if (test_bit(FC_UNLOADING, &vport->load_flag)) { 5249 if (phba->sli_rev == LPFC_SLI_REV4) { 5250 spin_lock_irqsave(&ndlp->lock, iflags); 5251 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5252 spin_unlock_irqrestore(&ndlp->lock, iflags); 5253 } 5254 } 5255 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5256 } 5257 } 5258 5259 /* 5260 * Free rpi associated with LPFC_NODELIST entry. 5261 * This routine is called from lpfc_freenode(), when we are removing 5262 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5263 * LOGO that completes successfully, and we are waiting to PLOGI back 5264 * to the remote NPort. In addition, it is called after we receive 5265 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5266 * we are waiting to PLOGI back to the remote NPort. 5267 */ 5268 int 5269 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5270 { 5271 struct lpfc_hba *phba = vport->phba; 5272 LPFC_MBOXQ_t *mbox; 5273 int rc, acc_plogi = 1; 5274 uint16_t rpi; 5275 5276 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5277 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5278 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5279 lpfc_printf_vlog(vport, KERN_INFO, 5280 LOG_NODE | LOG_DISCOVERY, 5281 "3366 RPI x%x needs to be " 5282 "unregistered nlp_flag x%x " 5283 "did x%x\n", 5284 ndlp->nlp_rpi, ndlp->nlp_flag, 5285 ndlp->nlp_DID); 5286 5287 /* If there is already an UNREG in progress for this ndlp, 5288 * no need to queue up another one. 5289 */ 5290 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5291 lpfc_printf_vlog(vport, KERN_INFO, 5292 LOG_NODE | LOG_DISCOVERY, 5293 "1436 unreg_rpi SKIP UNREG x%x on " 5294 "NPort x%x deferred x%x flg x%x " 5295 "Data: x%px\n", 5296 ndlp->nlp_rpi, ndlp->nlp_DID, 5297 ndlp->nlp_defer_did, 5298 ndlp->nlp_flag, ndlp); 5299 goto out; 5300 } 5301 5302 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5303 if (mbox) { 5304 /* SLI4 ports require the physical rpi value. */ 5305 rpi = ndlp->nlp_rpi; 5306 if (phba->sli_rev == LPFC_SLI_REV4) 5307 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5308 5309 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5310 mbox->vport = vport; 5311 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5312 if (!mbox->ctx_ndlp) { 5313 mempool_free(mbox, phba->mbox_mem_pool); 5314 return 1; 5315 } 5316 5317 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5318 /* 5319 * accept PLOGIs after unreg_rpi_cmpl 5320 */ 5321 acc_plogi = 0; 5322 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5323 Fabric_DID_MASK) && 5324 (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))) 5325 ndlp->nlp_flag |= NLP_UNREG_INP; 5326 5327 lpfc_printf_vlog(vport, KERN_INFO, 5328 LOG_NODE | LOG_DISCOVERY, 5329 "1433 unreg_rpi UNREG x%x on " 5330 "NPort x%x deferred flg x%x " 5331 "Data:x%px\n", 5332 ndlp->nlp_rpi, ndlp->nlp_DID, 5333 ndlp->nlp_flag, ndlp); 5334 5335 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5336 if (rc == MBX_NOT_FINISHED) { 5337 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5338 mempool_free(mbox, phba->mbox_mem_pool); 5339 acc_plogi = 1; 5340 lpfc_nlp_put(ndlp); 5341 } 5342 } else { 5343 lpfc_printf_vlog(vport, KERN_INFO, 5344 LOG_NODE | LOG_DISCOVERY, 5345 "1444 Failed to allocate mempool " 5346 "unreg_rpi UNREG x%x, " 5347 "DID x%x, flag x%x, " 5348 "ndlp x%px\n", 5349 ndlp->nlp_rpi, ndlp->nlp_DID, 5350 ndlp->nlp_flag, ndlp); 5351 5352 /* Because mempool_alloc failed, we 5353 * will issue a LOGO here and keep the rpi alive if 5354 * not unloading. 5355 */ 5356 if (!test_bit(FC_UNLOADING, &vport->load_flag)) { 5357 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5358 lpfc_issue_els_logo(vport, ndlp, 0); 5359 ndlp->nlp_prev_state = ndlp->nlp_state; 5360 lpfc_nlp_set_state(vport, ndlp, 5361 NLP_STE_NPR_NODE); 5362 } 5363 5364 return 1; 5365 } 5366 lpfc_no_rpi(phba, ndlp); 5367 out: 5368 if (phba->sli_rev != LPFC_SLI_REV4) 5369 ndlp->nlp_rpi = 0; 5370 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5371 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5372 if (acc_plogi) 5373 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5374 return 1; 5375 } 5376 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5377 return 0; 5378 } 5379 5380 /** 5381 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5382 * @phba: pointer to lpfc hba data structure. 5383 * 5384 * This routine is invoked to unregister all the currently registered RPIs 5385 * to the HBA. 5386 **/ 5387 void 5388 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5389 { 5390 struct lpfc_vport **vports; 5391 struct lpfc_nodelist *ndlp; 5392 int i; 5393 unsigned long iflags; 5394 5395 vports = lpfc_create_vport_work_array(phba); 5396 if (!vports) { 5397 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5398 "2884 Vport array allocation failed \n"); 5399 return; 5400 } 5401 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5402 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags); 5403 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5404 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5405 /* The mempool_alloc might sleep */ 5406 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, 5407 iflags); 5408 lpfc_unreg_rpi(vports[i], ndlp); 5409 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, 5410 iflags); 5411 } 5412 } 5413 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags); 5414 } 5415 lpfc_destroy_vport_work_array(phba, vports); 5416 } 5417 5418 void 5419 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5420 { 5421 struct lpfc_hba *phba = vport->phba; 5422 LPFC_MBOXQ_t *mbox; 5423 int rc; 5424 5425 if (phba->sli_rev == LPFC_SLI_REV4) { 5426 lpfc_sli4_unreg_all_rpis(vport); 5427 return; 5428 } 5429 5430 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5431 if (mbox) { 5432 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5433 mbox); 5434 mbox->vport = vport; 5435 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5436 mbox->ctx_ndlp = NULL; 5437 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5438 if (rc != MBX_TIMEOUT) 5439 mempool_free(mbox, phba->mbox_mem_pool); 5440 5441 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5442 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5443 "1836 Could not issue " 5444 "unreg_login(all_rpis) status %d\n", 5445 rc); 5446 } 5447 } 5448 5449 void 5450 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5451 { 5452 struct lpfc_hba *phba = vport->phba; 5453 LPFC_MBOXQ_t *mbox; 5454 int rc; 5455 5456 /* Unreg DID is an SLI3 operation. */ 5457 if (phba->sli_rev > LPFC_SLI_REV3) 5458 return; 5459 5460 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5461 if (mbox) { 5462 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5463 mbox); 5464 mbox->vport = vport; 5465 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5466 mbox->ctx_ndlp = NULL; 5467 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5468 if (rc != MBX_TIMEOUT) 5469 mempool_free(mbox, phba->mbox_mem_pool); 5470 5471 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5472 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5473 "1815 Could not issue " 5474 "unreg_did (default rpis) status %d\n", 5475 rc); 5476 } 5477 } 5478 5479 /* 5480 * Free resources associated with LPFC_NODELIST entry 5481 * so it can be freed. 5482 */ 5483 static int 5484 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5485 { 5486 struct lpfc_hba *phba = vport->phba; 5487 LPFC_MBOXQ_t *mb, *nextmb; 5488 5489 /* Cleanup node for NPort <nlp_DID> */ 5490 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5491 "0900 Cleanup node for NPort x%x " 5492 "Data: x%x x%x x%x\n", 5493 ndlp->nlp_DID, ndlp->nlp_flag, 5494 ndlp->nlp_state, ndlp->nlp_rpi); 5495 lpfc_dequeue_node(vport, ndlp); 5496 5497 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5498 5499 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5500 if ((mb = phba->sli.mbox_active)) { 5501 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5502 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5503 (ndlp == mb->ctx_ndlp)) { 5504 mb->ctx_ndlp = NULL; 5505 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5506 } 5507 } 5508 5509 spin_lock_irq(&phba->hbalock); 5510 /* Cleanup REG_LOGIN completions which are not yet processed */ 5511 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5512 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5513 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5514 (ndlp != mb->ctx_ndlp)) 5515 continue; 5516 5517 mb->ctx_ndlp = NULL; 5518 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5519 } 5520 5521 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5522 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5523 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5524 (ndlp == mb->ctx_ndlp)) { 5525 list_del(&mb->list); 5526 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED); 5527 5528 /* Don't invoke lpfc_nlp_put. The driver is in 5529 * lpfc_nlp_release context. 5530 */ 5531 } 5532 } 5533 spin_unlock_irq(&phba->hbalock); 5534 5535 lpfc_els_abort(phba, ndlp); 5536 5537 spin_lock_irq(&ndlp->lock); 5538 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5539 spin_unlock_irq(&ndlp->lock); 5540 5541 ndlp->nlp_last_elscmd = 0; 5542 del_timer_sync(&ndlp->nlp_delayfunc); 5543 5544 list_del_init(&ndlp->els_retry_evt.evt_listp); 5545 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5546 list_del_init(&ndlp->recovery_evt.evt_listp); 5547 lpfc_cleanup_vports_rrqs(vport, ndlp); 5548 5549 if (phba->sli_rev == LPFC_SLI_REV4) 5550 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5551 5552 return 0; 5553 } 5554 5555 static int 5556 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5557 uint32_t did) 5558 { 5559 D_ID mydid, ndlpdid, matchdid; 5560 5561 if (did == Bcast_DID) 5562 return 0; 5563 5564 /* First check for Direct match */ 5565 if (ndlp->nlp_DID == did) 5566 return 1; 5567 5568 /* Next check for area/domain identically equals 0 match */ 5569 mydid.un.word = vport->fc_myDID; 5570 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5571 return 0; 5572 } 5573 5574 matchdid.un.word = did; 5575 ndlpdid.un.word = ndlp->nlp_DID; 5576 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5577 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5578 (mydid.un.b.area == matchdid.un.b.area)) { 5579 /* This code is supposed to match the ID 5580 * for a private loop device that is 5581 * connect to fl_port. But we need to 5582 * check that the port did not just go 5583 * from pt2pt to fabric or we could end 5584 * up matching ndlp->nlp_DID 000001 to 5585 * fabric DID 0x20101 5586 */ 5587 if ((ndlpdid.un.b.domain == 0) && 5588 (ndlpdid.un.b.area == 0)) { 5589 if (ndlpdid.un.b.id && 5590 vport->phba->fc_topology == 5591 LPFC_TOPOLOGY_LOOP) 5592 return 1; 5593 } 5594 return 0; 5595 } 5596 5597 matchdid.un.word = ndlp->nlp_DID; 5598 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5599 (mydid.un.b.area == ndlpdid.un.b.area)) { 5600 if ((matchdid.un.b.domain == 0) && 5601 (matchdid.un.b.area == 0)) { 5602 if (matchdid.un.b.id) 5603 return 1; 5604 } 5605 } 5606 } 5607 return 0; 5608 } 5609 5610 /* Search for a nodelist entry */ 5611 static struct lpfc_nodelist * 5612 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5613 { 5614 struct lpfc_nodelist *ndlp; 5615 uint32_t data1; 5616 5617 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5618 if (lpfc_matchdid(vport, ndlp, did)) { 5619 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5620 ((uint32_t)ndlp->nlp_xri << 16) | 5621 ((uint32_t)ndlp->nlp_type << 8) 5622 ); 5623 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 5624 "0929 FIND node DID " 5625 "Data: x%px x%x x%x x%x x%x x%px\n", 5626 ndlp, ndlp->nlp_DID, 5627 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5628 ndlp->active_rrqs_xri_bitmap); 5629 return ndlp; 5630 } 5631 } 5632 5633 /* FIND node did <did> NOT FOUND */ 5634 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5635 "0932 FIND node did x%x NOT FOUND.\n", did); 5636 return NULL; 5637 } 5638 5639 struct lpfc_nodelist * 5640 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5641 { 5642 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5643 struct lpfc_nodelist *ndlp; 5644 unsigned long iflags; 5645 5646 spin_lock_irqsave(shost->host_lock, iflags); 5647 ndlp = __lpfc_findnode_did(vport, did); 5648 spin_unlock_irqrestore(shost->host_lock, iflags); 5649 return ndlp; 5650 } 5651 5652 struct lpfc_nodelist * 5653 lpfc_findnode_mapped(struct lpfc_vport *vport) 5654 { 5655 struct lpfc_nodelist *ndlp; 5656 uint32_t data1; 5657 unsigned long iflags; 5658 5659 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 5660 5661 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5662 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5663 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5664 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5665 ((uint32_t)ndlp->nlp_xri << 16) | 5666 ((uint32_t)ndlp->nlp_type << 8) | 5667 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5668 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, 5669 iflags); 5670 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 5671 "2025 FIND node DID MAPPED " 5672 "Data: x%px x%x x%x x%x x%px\n", 5673 ndlp, ndlp->nlp_DID, 5674 ndlp->nlp_flag, data1, 5675 ndlp->active_rrqs_xri_bitmap); 5676 return ndlp; 5677 } 5678 } 5679 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 5680 5681 /* FIND node did <did> NOT FOUND */ 5682 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5683 "2026 FIND mapped did NOT FOUND.\n"); 5684 return NULL; 5685 } 5686 5687 struct lpfc_nodelist * 5688 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5689 { 5690 struct lpfc_nodelist *ndlp; 5691 5692 ndlp = lpfc_findnode_did(vport, did); 5693 if (!ndlp) { 5694 if (vport->phba->nvmet_support) 5695 return NULL; 5696 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5697 lpfc_rscn_payload_check(vport, did) == 0) 5698 return NULL; 5699 ndlp = lpfc_nlp_init(vport, did); 5700 if (!ndlp) 5701 return NULL; 5702 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5703 5704 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5705 "6453 Setup New Node 2B_DISC x%x " 5706 "Data:x%x x%x x%lx\n", 5707 ndlp->nlp_DID, ndlp->nlp_flag, 5708 ndlp->nlp_state, vport->fc_flag); 5709 5710 spin_lock_irq(&ndlp->lock); 5711 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5712 spin_unlock_irq(&ndlp->lock); 5713 return ndlp; 5714 } 5715 5716 /* The NVME Target does not want to actively manage an rport. 5717 * The goal is to allow the target to reset its state and clear 5718 * pending IO in preparation for the initiator to recover. 5719 */ 5720 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5721 !test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) { 5722 if (lpfc_rscn_payload_check(vport, did)) { 5723 5724 /* Since this node is marked for discovery, 5725 * delay timeout is not needed. 5726 */ 5727 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5728 5729 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5730 "6455 Setup RSCN Node 2B_DISC x%x " 5731 "Data:x%x x%x x%lx\n", 5732 ndlp->nlp_DID, ndlp->nlp_flag, 5733 ndlp->nlp_state, vport->fc_flag); 5734 5735 /* NVME Target mode waits until rport is known to be 5736 * impacted by the RSCN before it transitions. No 5737 * active management - just go to NPR provided the 5738 * node had a valid login. 5739 */ 5740 if (vport->phba->nvmet_support) 5741 return ndlp; 5742 5743 if (ndlp->nlp_state > NLP_STE_UNUSED_NODE && 5744 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 5745 lpfc_disc_state_machine(vport, ndlp, NULL, 5746 NLP_EVT_DEVICE_RECOVERY); 5747 } 5748 5749 spin_lock_irq(&ndlp->lock); 5750 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5751 spin_unlock_irq(&ndlp->lock); 5752 } else { 5753 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5754 "6456 Skip Setup RSCN Node x%x " 5755 "Data:x%x x%x x%lx\n", 5756 ndlp->nlp_DID, ndlp->nlp_flag, 5757 ndlp->nlp_state, vport->fc_flag); 5758 ndlp = NULL; 5759 } 5760 } else { 5761 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5762 "6457 Setup Active Node 2B_DISC x%x " 5763 "Data:x%x x%x x%lx\n", 5764 ndlp->nlp_DID, ndlp->nlp_flag, 5765 ndlp->nlp_state, vport->fc_flag); 5766 5767 /* If the initiator received a PLOGI from this NPort or if the 5768 * initiator is already in the process of discovery on it, 5769 * there's no need to try to discover it again. 5770 */ 5771 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5772 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5773 (!vport->phba->nvmet_support && 5774 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5775 return NULL; 5776 5777 if (vport->phba->nvmet_support) 5778 return ndlp; 5779 5780 /* Moving to NPR state clears unsolicited flags and 5781 * allows for rediscovery 5782 */ 5783 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5784 5785 spin_lock_irq(&ndlp->lock); 5786 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5787 spin_unlock_irq(&ndlp->lock); 5788 } 5789 return ndlp; 5790 } 5791 5792 /* Build a list of nodes to discover based on the loopmap */ 5793 void 5794 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5795 { 5796 struct lpfc_hba *phba = vport->phba; 5797 int j; 5798 uint32_t alpa, index; 5799 5800 if (!lpfc_is_link_up(phba)) 5801 return; 5802 5803 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5804 return; 5805 5806 /* Check for loop map present or not */ 5807 if (phba->alpa_map[0]) { 5808 for (j = 1; j <= phba->alpa_map[0]; j++) { 5809 alpa = phba->alpa_map[j]; 5810 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5811 continue; 5812 lpfc_setup_disc_node(vport, alpa); 5813 } 5814 } else { 5815 /* No alpamap, so try all alpa's */ 5816 for (j = 0; j < FC_MAXLOOP; j++) { 5817 /* If cfg_scan_down is set, start from highest 5818 * ALPA (0xef) to lowest (0x1). 5819 */ 5820 if (vport->cfg_scan_down) 5821 index = j; 5822 else 5823 index = FC_MAXLOOP - j - 1; 5824 alpa = lpfcAlpaArray[index]; 5825 if ((vport->fc_myDID & 0xff) == alpa) 5826 continue; 5827 lpfc_setup_disc_node(vport, alpa); 5828 } 5829 } 5830 return; 5831 } 5832 5833 /* SLI3 only */ 5834 void 5835 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5836 { 5837 LPFC_MBOXQ_t *mbox; 5838 struct lpfc_sli *psli = &phba->sli; 5839 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5840 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5841 int rc; 5842 5843 /* 5844 * if it's not a physical port or if we already send 5845 * clear_la then don't send it. 5846 */ 5847 if ((phba->link_state >= LPFC_CLEAR_LA) || 5848 (vport->port_type != LPFC_PHYSICAL_PORT) || 5849 (phba->sli_rev == LPFC_SLI_REV4)) 5850 return; 5851 5852 /* Link up discovery */ 5853 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5854 phba->link_state = LPFC_CLEAR_LA; 5855 lpfc_clear_la(phba, mbox); 5856 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5857 mbox->vport = vport; 5858 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5859 if (rc == MBX_NOT_FINISHED) { 5860 mempool_free(mbox, phba->mbox_mem_pool); 5861 lpfc_disc_flush_list(vport); 5862 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5863 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5864 phba->link_state = LPFC_HBA_ERROR; 5865 } 5866 } 5867 } 5868 5869 /* Reg_vpi to tell firmware to resume normal operations */ 5870 void 5871 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5872 { 5873 LPFC_MBOXQ_t *regvpimbox; 5874 5875 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5876 if (regvpimbox) { 5877 lpfc_reg_vpi(vport, regvpimbox); 5878 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5879 regvpimbox->vport = vport; 5880 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5881 == MBX_NOT_FINISHED) { 5882 mempool_free(regvpimbox, phba->mbox_mem_pool); 5883 } 5884 } 5885 } 5886 5887 /* Start Link up / RSCN discovery on NPR nodes */ 5888 void 5889 lpfc_disc_start(struct lpfc_vport *vport) 5890 { 5891 struct lpfc_hba *phba = vport->phba; 5892 uint32_t num_sent; 5893 uint32_t clear_la_pending; 5894 5895 if (!lpfc_is_link_up(phba)) { 5896 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5897 "3315 Link is not up %x\n", 5898 phba->link_state); 5899 return; 5900 } 5901 5902 if (phba->link_state == LPFC_CLEAR_LA) 5903 clear_la_pending = 1; 5904 else 5905 clear_la_pending = 0; 5906 5907 if (vport->port_state < LPFC_VPORT_READY) 5908 vport->port_state = LPFC_DISC_AUTH; 5909 5910 lpfc_set_disctmo(vport); 5911 5912 vport->fc_prevDID = vport->fc_myDID; 5913 vport->num_disc_nodes = 0; 5914 5915 /* Start Discovery state <hba_state> */ 5916 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5917 "0202 Start Discovery port state x%x " 5918 "flg x%lx Data: x%x x%x x%x\n", 5919 vport->port_state, vport->fc_flag, 5920 atomic_read(&vport->fc_plogi_cnt), 5921 atomic_read(&vport->fc_adisc_cnt), 5922 atomic_read(&vport->fc_npr_cnt)); 5923 5924 /* First do ADISCs - if any */ 5925 num_sent = lpfc_els_disc_adisc(vport); 5926 5927 if (num_sent) 5928 return; 5929 5930 /* Register the VPI for SLI3, NPIV only. */ 5931 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5932 !test_bit(FC_PT2PT, &vport->fc_flag) && 5933 !test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5934 (phba->sli_rev < LPFC_SLI_REV4)) { 5935 lpfc_issue_clear_la(phba, vport); 5936 lpfc_issue_reg_vpi(phba, vport); 5937 return; 5938 } 5939 5940 /* 5941 * For SLI2, we need to set port_state to READY and continue 5942 * discovery. 5943 */ 5944 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5945 /* If we get here, there is nothing to ADISC */ 5946 lpfc_issue_clear_la(phba, vport); 5947 5948 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) { 5949 vport->num_disc_nodes = 0; 5950 /* go thru NPR nodes and issue ELS PLOGIs */ 5951 if (atomic_read(&vport->fc_npr_cnt)) 5952 lpfc_els_disc_plogi(vport); 5953 5954 if (!vport->num_disc_nodes) { 5955 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 5956 lpfc_can_disctmo(vport); 5957 } 5958 } 5959 vport->port_state = LPFC_VPORT_READY; 5960 } else { 5961 /* Next do PLOGIs - if any */ 5962 num_sent = lpfc_els_disc_plogi(vport); 5963 5964 if (num_sent) 5965 return; 5966 5967 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { 5968 /* Check to see if more RSCNs came in while we 5969 * were processing this one. 5970 */ 5971 if (vport->fc_rscn_id_cnt == 0 && 5972 !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) { 5973 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 5974 lpfc_can_disctmo(vport); 5975 } else { 5976 lpfc_els_handle_rscn(vport); 5977 } 5978 } 5979 } 5980 return; 5981 } 5982 5983 /* 5984 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 5985 * ring the match the sppecified nodelist. 5986 */ 5987 static void 5988 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5989 { 5990 LIST_HEAD(completions); 5991 struct lpfc_iocbq *iocb, *next_iocb; 5992 struct lpfc_sli_ring *pring; 5993 u32 ulp_command; 5994 5995 pring = lpfc_phba_elsring(phba); 5996 if (unlikely(!pring)) 5997 return; 5998 5999 /* Error matching iocb on txq or txcmplq 6000 * First check the txq. 6001 */ 6002 spin_lock_irq(&phba->hbalock); 6003 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6004 if (iocb->ndlp != ndlp) 6005 continue; 6006 6007 ulp_command = get_job_cmnd(phba, iocb); 6008 6009 if (ulp_command == CMD_ELS_REQUEST64_CR || 6010 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6011 6012 list_move_tail(&iocb->list, &completions); 6013 } 6014 } 6015 6016 /* Next check the txcmplq */ 6017 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, 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 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6026 } 6027 } 6028 spin_unlock_irq(&phba->hbalock); 6029 6030 /* Make sure HBA is alive */ 6031 lpfc_issue_hb_tmo(phba); 6032 6033 /* Cancel all the IOCBs from the completions list */ 6034 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6035 IOERR_SLI_ABORTED); 6036 } 6037 6038 static void 6039 lpfc_disc_flush_list(struct lpfc_vport *vport) 6040 { 6041 struct lpfc_nodelist *ndlp, *next_ndlp; 6042 struct lpfc_hba *phba = vport->phba; 6043 6044 if (atomic_read(&vport->fc_plogi_cnt) || 6045 atomic_read(&vport->fc_adisc_cnt)) { 6046 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6047 nlp_listp) { 6048 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6049 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6050 lpfc_free_tx(phba, ndlp); 6051 } 6052 } 6053 } 6054 } 6055 6056 /* 6057 * lpfc_notify_xport_npr - notifies xport of node disappearance 6058 * @vport: Pointer to Virtual Port object. 6059 * 6060 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6061 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6062 * and transport notified that the node is gone. 6063 * Return Code: 6064 * none 6065 */ 6066 static void 6067 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6068 { 6069 struct lpfc_nodelist *ndlp, *next_ndlp; 6070 6071 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6072 nlp_listp) { 6073 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6074 } 6075 } 6076 void 6077 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6078 { 6079 lpfc_els_flush_rscn(vport); 6080 lpfc_els_flush_cmd(vport); 6081 lpfc_disc_flush_list(vport); 6082 if (pci_channel_offline(vport->phba->pcidev)) 6083 lpfc_notify_xport_npr(vport); 6084 } 6085 6086 /*****************************************************************************/ 6087 /* 6088 * NAME: lpfc_disc_timeout 6089 * 6090 * FUNCTION: Fibre Channel driver discovery timeout routine. 6091 * 6092 * EXECUTION ENVIRONMENT: interrupt only 6093 * 6094 * CALLED FROM: 6095 * Timer function 6096 * 6097 * RETURNS: 6098 * none 6099 */ 6100 /*****************************************************************************/ 6101 void 6102 lpfc_disc_timeout(struct timer_list *t) 6103 { 6104 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6105 struct lpfc_hba *phba = vport->phba; 6106 uint32_t tmo_posted; 6107 unsigned long flags = 0; 6108 6109 if (unlikely(!phba)) 6110 return; 6111 6112 spin_lock_irqsave(&vport->work_port_lock, flags); 6113 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6114 if (!tmo_posted) 6115 vport->work_port_events |= WORKER_DISC_TMO; 6116 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6117 6118 if (!tmo_posted) 6119 lpfc_worker_wake_up(phba); 6120 return; 6121 } 6122 6123 static void 6124 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6125 { 6126 struct lpfc_hba *phba = vport->phba; 6127 struct lpfc_sli *psli = &phba->sli; 6128 struct lpfc_nodelist *ndlp, *next_ndlp; 6129 LPFC_MBOXQ_t *initlinkmbox; 6130 int rc, clrlaerr = 0; 6131 6132 if (!test_and_clear_bit(FC_DISC_TMO, &vport->fc_flag)) 6133 return; 6134 6135 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6136 "disc timeout: state:x%x rtry:x%x flg:x%x", 6137 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6138 6139 switch (vport->port_state) { 6140 6141 case LPFC_LOCAL_CFG_LINK: 6142 /* 6143 * port_state is identically LPFC_LOCAL_CFG_LINK while 6144 * waiting for FAN timeout 6145 */ 6146 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6147 "0221 FAN timeout\n"); 6148 6149 /* Start discovery by sending FLOGI, clean up old rpis */ 6150 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6151 nlp_listp) { 6152 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6153 continue; 6154 if (ndlp->nlp_type & NLP_FABRIC) { 6155 /* Clean up the ndlp on Fabric connections */ 6156 lpfc_drop_node(vport, ndlp); 6157 6158 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6159 /* Fail outstanding IO now since device 6160 * is marked for PLOGI. 6161 */ 6162 lpfc_unreg_rpi(vport, ndlp); 6163 } 6164 } 6165 if (vport->port_state != LPFC_FLOGI) { 6166 if (phba->sli_rev <= LPFC_SLI_REV3) 6167 lpfc_initial_flogi(vport); 6168 else 6169 lpfc_issue_init_vfi(vport); 6170 return; 6171 } 6172 break; 6173 6174 case LPFC_FDISC: 6175 case LPFC_FLOGI: 6176 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6177 /* Initial FLOGI timeout */ 6178 lpfc_printf_vlog(vport, KERN_ERR, 6179 LOG_TRACE_EVENT, 6180 "0222 Initial %s timeout\n", 6181 vport->vpi ? "FDISC" : "FLOGI"); 6182 6183 /* Assume no Fabric and go on with discovery. 6184 * Check for outstanding ELS FLOGI to abort. 6185 */ 6186 6187 /* FLOGI failed, so just use loop map to make discovery list */ 6188 lpfc_disc_list_loopmap(vport); 6189 6190 /* Start discovery */ 6191 lpfc_disc_start(vport); 6192 break; 6193 6194 case LPFC_FABRIC_CFG_LINK: 6195 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6196 NameServer login */ 6197 lpfc_printf_vlog(vport, KERN_ERR, 6198 LOG_TRACE_EVENT, 6199 "0223 Timeout while waiting for " 6200 "NameServer login\n"); 6201 /* Next look for NameServer ndlp */ 6202 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6203 if (ndlp) 6204 lpfc_els_abort(phba, ndlp); 6205 6206 /* ReStart discovery */ 6207 goto restart_disc; 6208 6209 case LPFC_NS_QRY: 6210 /* Check for wait for NameServer Rsp timeout */ 6211 lpfc_printf_vlog(vport, KERN_ERR, 6212 LOG_TRACE_EVENT, 6213 "0224 NameServer Query timeout " 6214 "Data: x%x x%x\n", 6215 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6216 6217 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6218 /* Try it one more time */ 6219 vport->fc_ns_retry++; 6220 vport->gidft_inp = 0; 6221 rc = lpfc_issue_gidft(vport); 6222 if (rc == 0) 6223 break; 6224 } 6225 vport->fc_ns_retry = 0; 6226 6227 restart_disc: 6228 /* 6229 * Discovery is over. 6230 * set port_state to PORT_READY if SLI2. 6231 * cmpl_reg_vpi will set port_state to READY for SLI3. 6232 */ 6233 if (phba->sli_rev < LPFC_SLI_REV4) { 6234 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6235 lpfc_issue_reg_vpi(phba, vport); 6236 else { 6237 lpfc_issue_clear_la(phba, vport); 6238 vport->port_state = LPFC_VPORT_READY; 6239 } 6240 } 6241 6242 /* Setup and issue mailbox INITIALIZE LINK command */ 6243 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6244 if (!initlinkmbox) { 6245 lpfc_printf_vlog(vport, KERN_ERR, 6246 LOG_TRACE_EVENT, 6247 "0206 Device Discovery " 6248 "completion error\n"); 6249 phba->link_state = LPFC_HBA_ERROR; 6250 break; 6251 } 6252 6253 lpfc_linkdown(phba); 6254 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6255 phba->cfg_link_speed); 6256 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6257 initlinkmbox->vport = vport; 6258 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6259 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6260 lpfc_set_loopback_flag(phba); 6261 if (rc == MBX_NOT_FINISHED) 6262 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6263 6264 break; 6265 6266 case LPFC_DISC_AUTH: 6267 /* Node Authentication timeout */ 6268 lpfc_printf_vlog(vport, KERN_ERR, 6269 LOG_TRACE_EVENT, 6270 "0227 Node Authentication timeout\n"); 6271 lpfc_disc_flush_list(vport); 6272 6273 /* 6274 * set port_state to PORT_READY if SLI2. 6275 * cmpl_reg_vpi will set port_state to READY for SLI3. 6276 */ 6277 if (phba->sli_rev < LPFC_SLI_REV4) { 6278 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6279 lpfc_issue_reg_vpi(phba, vport); 6280 else { /* NPIV Not enabled */ 6281 lpfc_issue_clear_la(phba, vport); 6282 vport->port_state = LPFC_VPORT_READY; 6283 } 6284 } 6285 break; 6286 6287 case LPFC_VPORT_READY: 6288 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { 6289 lpfc_printf_vlog(vport, KERN_ERR, 6290 LOG_TRACE_EVENT, 6291 "0231 RSCN timeout Data: x%x " 6292 "x%x x%x x%x\n", 6293 vport->fc_ns_retry, LPFC_MAX_NS_RETRY, 6294 vport->port_state, vport->gidft_inp); 6295 6296 /* Cleanup any outstanding ELS commands */ 6297 lpfc_els_flush_cmd(vport); 6298 6299 lpfc_els_flush_rscn(vport); 6300 lpfc_disc_flush_list(vport); 6301 } 6302 break; 6303 6304 default: 6305 lpfc_printf_vlog(vport, KERN_ERR, 6306 LOG_TRACE_EVENT, 6307 "0273 Unexpected discovery timeout, " 6308 "vport State x%x\n", vport->port_state); 6309 break; 6310 } 6311 6312 switch (phba->link_state) { 6313 case LPFC_CLEAR_LA: 6314 /* CLEAR LA timeout */ 6315 lpfc_printf_vlog(vport, KERN_ERR, 6316 LOG_TRACE_EVENT, 6317 "0228 CLEAR LA timeout\n"); 6318 clrlaerr = 1; 6319 break; 6320 6321 case LPFC_LINK_UP: 6322 lpfc_issue_clear_la(phba, vport); 6323 fallthrough; 6324 case LPFC_LINK_UNKNOWN: 6325 case LPFC_WARM_START: 6326 case LPFC_INIT_START: 6327 case LPFC_INIT_MBX_CMDS: 6328 case LPFC_LINK_DOWN: 6329 case LPFC_HBA_ERROR: 6330 lpfc_printf_vlog(vport, KERN_ERR, 6331 LOG_TRACE_EVENT, 6332 "0230 Unexpected timeout, hba link " 6333 "state x%x\n", phba->link_state); 6334 clrlaerr = 1; 6335 break; 6336 6337 case LPFC_HBA_READY: 6338 break; 6339 } 6340 6341 if (clrlaerr) { 6342 lpfc_disc_flush_list(vport); 6343 if (phba->sli_rev != LPFC_SLI_REV4) { 6344 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6345 ~LPFC_STOP_IOCB_EVENT; 6346 psli->sli3_ring[LPFC_FCP_RING].flag &= 6347 ~LPFC_STOP_IOCB_EVENT; 6348 } 6349 vport->port_state = LPFC_VPORT_READY; 6350 } 6351 return; 6352 } 6353 6354 /* 6355 * This routine handles processing a NameServer REG_LOGIN mailbox 6356 * command upon completion. It is setup in the LPFC_MBOXQ 6357 * as the completion routine when the command is 6358 * handed off to the SLI layer. 6359 */ 6360 void 6361 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6362 { 6363 MAILBOX_t *mb = &pmb->u.mb; 6364 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 6365 struct lpfc_vport *vport = pmb->vport; 6366 6367 pmb->ctx_ndlp = NULL; 6368 6369 if (phba->sli_rev < LPFC_SLI_REV4) 6370 ndlp->nlp_rpi = mb->un.varWords[0]; 6371 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6372 ndlp->nlp_type |= NLP_FABRIC; 6373 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6374 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6375 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6376 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6377 kref_read(&ndlp->kref), 6378 ndlp); 6379 /* 6380 * Start issuing Fabric-Device Management Interface (FDMI) command to 6381 * 0xfffffa (FDMI well known port). 6382 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6383 * DPRT -> RPRT (vports) 6384 */ 6385 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6386 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6387 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6388 } else { 6389 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6390 } 6391 6392 6393 /* decrement the node reference count held for this callback 6394 * function. 6395 */ 6396 lpfc_nlp_put(ndlp); 6397 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 6398 return; 6399 } 6400 6401 static int 6402 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6403 { 6404 uint16_t *rpi = param; 6405 6406 return ndlp->nlp_rpi == *rpi; 6407 } 6408 6409 static int 6410 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6411 { 6412 return memcmp(&ndlp->nlp_portname, param, 6413 sizeof(ndlp->nlp_portname)) == 0; 6414 } 6415 6416 static struct lpfc_nodelist * 6417 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6418 { 6419 struct lpfc_nodelist *ndlp; 6420 6421 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6422 if (filter(ndlp, param)) { 6423 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 6424 "3185 FIND node filter %ps DID " 6425 "ndlp x%px did x%x flg x%x st x%x " 6426 "xri x%x type x%x rpi x%x\n", 6427 filter, ndlp, ndlp->nlp_DID, 6428 ndlp->nlp_flag, ndlp->nlp_state, 6429 ndlp->nlp_xri, ndlp->nlp_type, 6430 ndlp->nlp_rpi); 6431 return ndlp; 6432 } 6433 } 6434 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6435 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6436 return NULL; 6437 } 6438 6439 /* 6440 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6441 * returns the node list element pointer else return NULL. 6442 */ 6443 struct lpfc_nodelist * 6444 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6445 { 6446 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6447 } 6448 6449 /* 6450 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6451 * returns the node element list pointer else return NULL. 6452 */ 6453 struct lpfc_nodelist * 6454 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6455 { 6456 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6457 struct lpfc_nodelist *ndlp; 6458 6459 spin_lock_irq(shost->host_lock); 6460 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6461 spin_unlock_irq(shost->host_lock); 6462 return ndlp; 6463 } 6464 6465 /* 6466 * This routine looks up the ndlp lists for the given RPI. If the rpi 6467 * is found, the routine returns the node element list pointer else 6468 * return NULL. 6469 */ 6470 struct lpfc_nodelist * 6471 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6472 { 6473 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6474 struct lpfc_nodelist *ndlp; 6475 unsigned long flags; 6476 6477 spin_lock_irqsave(shost->host_lock, flags); 6478 ndlp = __lpfc_findnode_rpi(vport, rpi); 6479 spin_unlock_irqrestore(shost->host_lock, flags); 6480 return ndlp; 6481 } 6482 6483 /** 6484 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6485 * @phba: pointer to lpfc hba data structure. 6486 * @vpi: the physical host virtual N_Port identifier. 6487 * 6488 * This routine finds a vport on a HBA (referred by @phba) through a 6489 * @vpi. The function walks the HBA's vport list and returns the address 6490 * of the vport with the matching @vpi. 6491 * 6492 * Return code 6493 * NULL - No vport with the matching @vpi found 6494 * Otherwise - Address to the vport with the matching @vpi. 6495 **/ 6496 struct lpfc_vport * 6497 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6498 { 6499 struct lpfc_vport *vport; 6500 unsigned long flags; 6501 int i = 0; 6502 6503 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6504 if (vpi > 0) { 6505 /* 6506 * Translate the physical vpi to the logical vpi. The 6507 * vport stores the logical vpi. 6508 */ 6509 for (i = 0; i <= phba->max_vpi; i++) { 6510 if (vpi == phba->vpi_ids[i]) 6511 break; 6512 } 6513 6514 if (i > phba->max_vpi) { 6515 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6516 "2936 Could not find Vport mapped " 6517 "to vpi %d\n", vpi); 6518 return NULL; 6519 } 6520 } 6521 6522 spin_lock_irqsave(&phba->port_list_lock, flags); 6523 list_for_each_entry(vport, &phba->port_list, listentry) { 6524 if (vport->vpi == i) { 6525 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6526 return vport; 6527 } 6528 } 6529 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6530 return NULL; 6531 } 6532 6533 struct lpfc_nodelist * 6534 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6535 { 6536 struct lpfc_nodelist *ndlp; 6537 int rpi = LPFC_RPI_ALLOC_ERROR; 6538 6539 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6540 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6541 if (rpi == LPFC_RPI_ALLOC_ERROR) 6542 return NULL; 6543 } 6544 6545 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6546 if (!ndlp) { 6547 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6548 lpfc_sli4_free_rpi(vport->phba, rpi); 6549 return NULL; 6550 } 6551 6552 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6553 6554 spin_lock_init(&ndlp->lock); 6555 6556 lpfc_initialize_node(vport, ndlp, did); 6557 INIT_LIST_HEAD(&ndlp->nlp_listp); 6558 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6559 ndlp->nlp_rpi = rpi; 6560 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6561 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6562 "flg:x%x refcnt:%d\n", 6563 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6564 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6565 6566 ndlp->active_rrqs_xri_bitmap = 6567 mempool_alloc(vport->phba->active_rrq_pool, 6568 GFP_KERNEL); 6569 if (ndlp->active_rrqs_xri_bitmap) 6570 memset(ndlp->active_rrqs_xri_bitmap, 0, 6571 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6572 } 6573 6574 6575 6576 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6577 "node init: did:x%x", 6578 ndlp->nlp_DID, 0, 0); 6579 6580 return ndlp; 6581 } 6582 6583 /* This routine releases all resources associated with a specifc NPort's ndlp 6584 * and mempool_free's the nodelist. 6585 */ 6586 static void 6587 lpfc_nlp_release(struct kref *kref) 6588 { 6589 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6590 kref); 6591 struct lpfc_vport *vport = ndlp->vport; 6592 6593 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6594 "node release: did:x%x flg:x%x type:x%x", 6595 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6596 6597 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6598 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6599 __func__, ndlp, ndlp->nlp_DID, 6600 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6601 6602 /* remove ndlp from action. */ 6603 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6604 lpfc_cleanup_node(vport, ndlp); 6605 6606 /* Not all ELS transactions have registered the RPI with the port. 6607 * In these cases the rpi usage is temporary and the node is 6608 * released when the WQE is completed. Catch this case to free the 6609 * RPI to the pool. Because this node is in the release path, a lock 6610 * is unnecessary. All references are gone and the node has been 6611 * dequeued. 6612 */ 6613 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6614 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6615 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6616 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6617 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6618 } 6619 } 6620 6621 /* The node is not freed back to memory, it is released to a pool so 6622 * the node fields need to be cleaned up. 6623 */ 6624 ndlp->vport = NULL; 6625 ndlp->nlp_state = NLP_STE_FREED_NODE; 6626 ndlp->nlp_flag = 0; 6627 ndlp->fc4_xpt_flags = 0; 6628 6629 /* free ndlp memory for final ndlp release */ 6630 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6631 mempool_free(ndlp->active_rrqs_xri_bitmap, 6632 ndlp->phba->active_rrq_pool); 6633 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6634 } 6635 6636 /* This routine bumps the reference count for a ndlp structure to ensure 6637 * that one discovery thread won't free a ndlp while another discovery thread 6638 * is using it. 6639 */ 6640 struct lpfc_nodelist * 6641 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6642 { 6643 unsigned long flags; 6644 6645 if (ndlp) { 6646 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6647 "node get: did:x%x flg:x%x refcnt:x%x", 6648 ndlp->nlp_DID, ndlp->nlp_flag, 6649 kref_read(&ndlp->kref)); 6650 6651 /* The check of ndlp usage to prevent incrementing the 6652 * ndlp reference count that is in the process of being 6653 * released. 6654 */ 6655 spin_lock_irqsave(&ndlp->lock, flags); 6656 if (!kref_get_unless_zero(&ndlp->kref)) { 6657 spin_unlock_irqrestore(&ndlp->lock, flags); 6658 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6659 "0276 %s: ndlp:x%px refcnt:%d\n", 6660 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6661 return NULL; 6662 } 6663 spin_unlock_irqrestore(&ndlp->lock, flags); 6664 } else { 6665 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6666 } 6667 6668 return ndlp; 6669 } 6670 6671 /* This routine decrements the reference count for a ndlp structure. If the 6672 * count goes to 0, this indicates the associated nodelist should be freed. 6673 */ 6674 int 6675 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6676 { 6677 if (ndlp) { 6678 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6679 "node put: did:x%x flg:x%x refcnt:x%x", 6680 ndlp->nlp_DID, ndlp->nlp_flag, 6681 kref_read(&ndlp->kref)); 6682 } else { 6683 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6684 } 6685 6686 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6687 } 6688 6689 /** 6690 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6691 * @phba: Pointer to hba context object. 6692 * 6693 * This function iterate through all FC nodes associated 6694 * will all vports to check if there is any node with 6695 * fc_rports associated with it. If there is an fc_rport 6696 * associated with the node, then the node is either in 6697 * discovered state or its devloss_timer is pending. 6698 */ 6699 static int 6700 lpfc_fcf_inuse(struct lpfc_hba *phba) 6701 { 6702 struct lpfc_vport **vports; 6703 int i, ret = 0; 6704 struct lpfc_nodelist *ndlp; 6705 unsigned long iflags; 6706 6707 vports = lpfc_create_vport_work_array(phba); 6708 6709 /* If driver cannot allocate memory, indicate fcf is in use */ 6710 if (!vports) 6711 return 1; 6712 6713 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6714 /* 6715 * IF the CVL_RCVD bit is not set then we have sent the 6716 * flogi. 6717 * If dev_loss fires while we are waiting we do not want to 6718 * unreg the fcf. 6719 */ 6720 if (!test_bit(FC_VPORT_CVL_RCVD, &vports[i]->fc_flag)) { 6721 ret = 1; 6722 goto out; 6723 } 6724 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags); 6725 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6726 if (ndlp->rport && 6727 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6728 ret = 1; 6729 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, 6730 iflags); 6731 goto out; 6732 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6733 ret = 1; 6734 lpfc_printf_log(phba, KERN_INFO, 6735 LOG_NODE | LOG_DISCOVERY, 6736 "2624 RPI %x DID %x flag %x " 6737 "still logged in\n", 6738 ndlp->nlp_rpi, ndlp->nlp_DID, 6739 ndlp->nlp_flag); 6740 } 6741 } 6742 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags); 6743 } 6744 out: 6745 lpfc_destroy_vport_work_array(phba, vports); 6746 return ret; 6747 } 6748 6749 /** 6750 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6751 * @phba: Pointer to hba context object. 6752 * @mboxq: Pointer to mailbox object. 6753 * 6754 * This function frees memory associated with the mailbox command. 6755 */ 6756 void 6757 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6758 { 6759 struct lpfc_vport *vport = mboxq->vport; 6760 6761 if (mboxq->u.mb.mbxStatus) { 6762 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6763 "2555 UNREG_VFI mbxStatus error x%x " 6764 "HBA state x%x\n", 6765 mboxq->u.mb.mbxStatus, vport->port_state); 6766 } 6767 clear_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag); 6768 mempool_free(mboxq, phba->mbox_mem_pool); 6769 return; 6770 } 6771 6772 /** 6773 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6774 * @phba: Pointer to hba context object. 6775 * @mboxq: Pointer to mailbox object. 6776 * 6777 * This function frees memory associated with the mailbox command. 6778 */ 6779 static void 6780 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6781 { 6782 struct lpfc_vport *vport = mboxq->vport; 6783 6784 if (mboxq->u.mb.mbxStatus) { 6785 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6786 "2550 UNREG_FCFI mbxStatus error x%x " 6787 "HBA state x%x\n", 6788 mboxq->u.mb.mbxStatus, vport->port_state); 6789 } 6790 mempool_free(mboxq, phba->mbox_mem_pool); 6791 return; 6792 } 6793 6794 /** 6795 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6796 * @phba: Pointer to hba context object. 6797 * 6798 * This function prepare the HBA for unregistering the currently registered 6799 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6800 * VFIs. 6801 */ 6802 int 6803 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6804 { 6805 struct lpfc_vport **vports; 6806 struct lpfc_nodelist *ndlp; 6807 struct Scsi_Host *shost; 6808 int i = 0, rc; 6809 6810 /* Unregister RPIs */ 6811 if (lpfc_fcf_inuse(phba)) 6812 lpfc_unreg_hba_rpis(phba); 6813 6814 /* At this point, all discovery is aborted */ 6815 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6816 6817 /* Unregister VPIs */ 6818 vports = lpfc_create_vport_work_array(phba); 6819 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6820 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6821 /* Stop FLOGI/FDISC retries */ 6822 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6823 if (ndlp) 6824 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6825 lpfc_cleanup_pending_mbox(vports[i]); 6826 if (phba->sli_rev == LPFC_SLI_REV4) 6827 lpfc_sli4_unreg_all_rpis(vports[i]); 6828 lpfc_mbx_unreg_vpi(vports[i]); 6829 shost = lpfc_shost_from_vport(vports[i]); 6830 spin_lock_irq(shost->host_lock); 6831 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6832 spin_unlock_irq(shost->host_lock); 6833 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vports[i]->fc_flag); 6834 } 6835 lpfc_destroy_vport_work_array(phba, vports); 6836 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6837 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6838 if (ndlp) 6839 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6840 lpfc_cleanup_pending_mbox(phba->pport); 6841 if (phba->sli_rev == LPFC_SLI_REV4) 6842 lpfc_sli4_unreg_all_rpis(phba->pport); 6843 lpfc_mbx_unreg_vpi(phba->pport); 6844 shost = lpfc_shost_from_vport(phba->pport); 6845 spin_lock_irq(shost->host_lock); 6846 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6847 spin_unlock_irq(shost->host_lock); 6848 set_bit(FC_VPORT_NEEDS_INIT_VPI, &phba->pport->fc_flag); 6849 } 6850 6851 /* Cleanup any outstanding ELS commands */ 6852 lpfc_els_flush_all_cmd(phba); 6853 6854 /* Unregister the physical port VFI */ 6855 rc = lpfc_issue_unreg_vfi(phba->pport); 6856 return rc; 6857 } 6858 6859 /** 6860 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6861 * @phba: Pointer to hba context object. 6862 * 6863 * This function issues synchronous unregister FCF mailbox command to HBA to 6864 * unregister the currently registered FCF record. The driver does not reset 6865 * the driver FCF usage state flags. 6866 * 6867 * Return 0 if successfully issued, none-zero otherwise. 6868 */ 6869 int 6870 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6871 { 6872 LPFC_MBOXQ_t *mbox; 6873 int rc; 6874 6875 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6876 if (!mbox) { 6877 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6878 "2551 UNREG_FCFI mbox allocation failed" 6879 "HBA state x%x\n", phba->pport->port_state); 6880 return -ENOMEM; 6881 } 6882 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6883 mbox->vport = phba->pport; 6884 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6885 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6886 6887 if (rc == MBX_NOT_FINISHED) { 6888 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6889 "2552 Unregister FCFI command failed rc x%x " 6890 "HBA state x%x\n", 6891 rc, phba->pport->port_state); 6892 return -EINVAL; 6893 } 6894 return 0; 6895 } 6896 6897 /** 6898 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6899 * @phba: Pointer to hba context object. 6900 * 6901 * This function unregisters the currently reigstered FCF. This function 6902 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6903 */ 6904 void 6905 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6906 { 6907 int rc; 6908 6909 /* Preparation for unregistering fcf */ 6910 rc = lpfc_unregister_fcf_prep(phba); 6911 if (rc) { 6912 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6913 "2748 Failed to prepare for unregistering " 6914 "HBA's FCF record: rc=%d\n", rc); 6915 return; 6916 } 6917 6918 /* Now, unregister FCF record and reset HBA FCF state */ 6919 rc = lpfc_sli4_unregister_fcf(phba); 6920 if (rc) 6921 return; 6922 /* Reset HBA FCF states after successful unregister FCF */ 6923 spin_lock_irq(&phba->hbalock); 6924 phba->fcf.fcf_flag = 0; 6925 spin_unlock_irq(&phba->hbalock); 6926 phba->fcf.current_rec.flag = 0; 6927 6928 /* 6929 * If driver is not unloading, check if there is any other 6930 * FCF record that can be used for discovery. 6931 */ 6932 if (test_bit(FC_UNLOADING, &phba->pport->load_flag) || 6933 phba->link_state < LPFC_LINK_UP) 6934 return; 6935 6936 /* This is considered as the initial FCF discovery scan */ 6937 spin_lock_irq(&phba->hbalock); 6938 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6939 spin_unlock_irq(&phba->hbalock); 6940 6941 /* Reset FCF roundrobin bmask for new discovery */ 6942 lpfc_sli4_clear_fcf_rr_bmask(phba); 6943 6944 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6945 6946 if (rc) { 6947 spin_lock_irq(&phba->hbalock); 6948 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6949 spin_unlock_irq(&phba->hbalock); 6950 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6951 "2553 lpfc_unregister_unused_fcf failed " 6952 "to read FCF record HBA state x%x\n", 6953 phba->pport->port_state); 6954 } 6955 } 6956 6957 /** 6958 * lpfc_unregister_fcf - Unregister the currently registered fcf record 6959 * @phba: Pointer to hba context object. 6960 * 6961 * This function just unregisters the currently reigstered FCF. It does not 6962 * try to find another FCF for discovery. 6963 */ 6964 void 6965 lpfc_unregister_fcf(struct lpfc_hba *phba) 6966 { 6967 int rc; 6968 6969 /* Preparation for unregistering fcf */ 6970 rc = lpfc_unregister_fcf_prep(phba); 6971 if (rc) { 6972 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6973 "2749 Failed to prepare for unregistering " 6974 "HBA's FCF record: rc=%d\n", rc); 6975 return; 6976 } 6977 6978 /* Now, unregister FCF record and reset HBA FCF state */ 6979 rc = lpfc_sli4_unregister_fcf(phba); 6980 if (rc) 6981 return; 6982 /* Set proper HBA FCF states after successful unregister FCF */ 6983 spin_lock_irq(&phba->hbalock); 6984 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 6985 spin_unlock_irq(&phba->hbalock); 6986 } 6987 6988 /** 6989 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 6990 * @phba: Pointer to hba context object. 6991 * 6992 * This function check if there are any connected remote port for the FCF and 6993 * if all the devices are disconnected, this function unregister FCFI. 6994 * This function also tries to use another FCF for discovery. 6995 */ 6996 void 6997 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 6998 { 6999 /* 7000 * If HBA is not running in FIP mode, if HBA does not support 7001 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7002 * registered, do nothing. 7003 */ 7004 spin_lock_irq(&phba->hbalock); 7005 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag) || 7006 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7007 !test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) || 7008 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7009 phba->pport->port_state == LPFC_FLOGI) { 7010 spin_unlock_irq(&phba->hbalock); 7011 return; 7012 } 7013 spin_unlock_irq(&phba->hbalock); 7014 7015 if (lpfc_fcf_inuse(phba)) 7016 return; 7017 7018 lpfc_unregister_fcf_rescan(phba); 7019 } 7020 7021 /** 7022 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7023 * @phba: Pointer to hba context object. 7024 * @buff: Buffer containing the FCF connection table as in the config 7025 * region. 7026 * This function create driver data structure for the FCF connection 7027 * record table read from config region 23. 7028 */ 7029 static void 7030 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7031 uint8_t *buff) 7032 { 7033 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7034 struct lpfc_fcf_conn_hdr *conn_hdr; 7035 struct lpfc_fcf_conn_rec *conn_rec; 7036 uint32_t record_count; 7037 int i; 7038 7039 /* Free the current connect table */ 7040 list_for_each_entry_safe(conn_entry, next_conn_entry, 7041 &phba->fcf_conn_rec_list, list) { 7042 list_del_init(&conn_entry->list); 7043 kfree(conn_entry); 7044 } 7045 7046 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7047 record_count = conn_hdr->length * sizeof(uint32_t)/ 7048 sizeof(struct lpfc_fcf_conn_rec); 7049 7050 conn_rec = (struct lpfc_fcf_conn_rec *) 7051 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7052 7053 for (i = 0; i < record_count; i++) { 7054 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7055 continue; 7056 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7057 GFP_KERNEL); 7058 if (!conn_entry) { 7059 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7060 "2566 Failed to allocate connection" 7061 " table entry\n"); 7062 return; 7063 } 7064 7065 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7066 sizeof(struct lpfc_fcf_conn_rec)); 7067 list_add_tail(&conn_entry->list, 7068 &phba->fcf_conn_rec_list); 7069 } 7070 7071 if (!list_empty(&phba->fcf_conn_rec_list)) { 7072 i = 0; 7073 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7074 list) { 7075 conn_rec = &conn_entry->conn_rec; 7076 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7077 "3345 FCF connection list rec[%02d]: " 7078 "flags:x%04x, vtag:x%04x, " 7079 "fabric_name:x%02x:%02x:%02x:%02x:" 7080 "%02x:%02x:%02x:%02x, " 7081 "switch_name:x%02x:%02x:%02x:%02x:" 7082 "%02x:%02x:%02x:%02x\n", i++, 7083 conn_rec->flags, conn_rec->vlan_tag, 7084 conn_rec->fabric_name[0], 7085 conn_rec->fabric_name[1], 7086 conn_rec->fabric_name[2], 7087 conn_rec->fabric_name[3], 7088 conn_rec->fabric_name[4], 7089 conn_rec->fabric_name[5], 7090 conn_rec->fabric_name[6], 7091 conn_rec->fabric_name[7], 7092 conn_rec->switch_name[0], 7093 conn_rec->switch_name[1], 7094 conn_rec->switch_name[2], 7095 conn_rec->switch_name[3], 7096 conn_rec->switch_name[4], 7097 conn_rec->switch_name[5], 7098 conn_rec->switch_name[6], 7099 conn_rec->switch_name[7]); 7100 } 7101 } 7102 } 7103 7104 /** 7105 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7106 * @phba: Pointer to hba context object. 7107 * @buff: Buffer containing the FCoE parameter data structure. 7108 * 7109 * This function update driver data structure with config 7110 * parameters read from config region 23. 7111 */ 7112 static void 7113 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7114 uint8_t *buff) 7115 { 7116 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7117 struct lpfc_fcoe_params *fcoe_param; 7118 7119 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7120 buff; 7121 fcoe_param = (struct lpfc_fcoe_params *) 7122 (buff + sizeof(struct lpfc_fip_param_hdr)); 7123 7124 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7125 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7126 return; 7127 7128 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7129 phba->valid_vlan = 1; 7130 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7131 0xFFF; 7132 } 7133 7134 phba->fc_map[0] = fcoe_param->fc_map[0]; 7135 phba->fc_map[1] = fcoe_param->fc_map[1]; 7136 phba->fc_map[2] = fcoe_param->fc_map[2]; 7137 return; 7138 } 7139 7140 /** 7141 * lpfc_get_rec_conf23 - Get a record type in config region data. 7142 * @buff: Buffer containing config region 23 data. 7143 * @size: Size of the data buffer. 7144 * @rec_type: Record type to be searched. 7145 * 7146 * This function searches config region data to find the beginning 7147 * of the record specified by record_type. If record found, this 7148 * function return pointer to the record else return NULL. 7149 */ 7150 static uint8_t * 7151 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7152 { 7153 uint32_t offset = 0, rec_length; 7154 7155 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7156 (size < sizeof(uint32_t))) 7157 return NULL; 7158 7159 rec_length = buff[offset + 1]; 7160 7161 /* 7162 * One TLV record has one word header and number of data words 7163 * specified in the rec_length field of the record header. 7164 */ 7165 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7166 <= size) { 7167 if (buff[offset] == rec_type) 7168 return &buff[offset]; 7169 7170 if (buff[offset] == LPFC_REGION23_LAST_REC) 7171 return NULL; 7172 7173 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7174 rec_length = buff[offset + 1]; 7175 } 7176 return NULL; 7177 } 7178 7179 /** 7180 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7181 * @phba: Pointer to lpfc_hba data structure. 7182 * @buff: Buffer containing config region 23 data. 7183 * @size: Size of the data buffer. 7184 * 7185 * This function parses the FCoE config parameters in config region 23 and 7186 * populate driver data structure with the parameters. 7187 */ 7188 void 7189 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7190 uint8_t *buff, 7191 uint32_t size) 7192 { 7193 uint32_t offset = 0; 7194 uint8_t *rec_ptr; 7195 7196 /* 7197 * If data size is less than 2 words signature and version cannot be 7198 * verified. 7199 */ 7200 if (size < 2*sizeof(uint32_t)) 7201 return; 7202 7203 /* Check the region signature first */ 7204 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7205 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7206 "2567 Config region 23 has bad signature\n"); 7207 return; 7208 } 7209 7210 offset += 4; 7211 7212 /* Check the data structure version */ 7213 if (buff[offset] != LPFC_REGION23_VERSION) { 7214 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7215 "2568 Config region 23 has bad version\n"); 7216 return; 7217 } 7218 offset += 4; 7219 7220 /* Read FCoE param record */ 7221 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7222 size - offset, FCOE_PARAM_TYPE); 7223 if (rec_ptr) 7224 lpfc_read_fcoe_param(phba, rec_ptr); 7225 7226 /* Read FCF connection table */ 7227 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7228 size - offset, FCOE_CONN_TBL_TYPE); 7229 if (rec_ptr) 7230 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7231 7232 } 7233 7234 /* 7235 * lpfc_error_lost_link - IO failure from link event or FW reset check. 7236 * 7237 * @vport: Pointer to lpfc_vport data structure. 7238 * @ulp_status: IO completion status. 7239 * @ulp_word4: Reason code for the ulp_status. 7240 * 7241 * This function evaluates the ulp_status and ulp_word4 values 7242 * for specific error values that indicate an internal link fault 7243 * or fw reset event for the completing IO. Callers require this 7244 * common data to decide next steps on the IO. 7245 * 7246 * Return: 7247 * false - No link or reset error occurred. 7248 * true - A link or reset error occurred. 7249 */ 7250 bool 7251 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4) 7252 { 7253 /* Mask off the extra port data to get just the reason code. */ 7254 u32 rsn_code = IOERR_PARAM_MASK & ulp_word4; 7255 7256 if (ulp_status == IOSTAT_LOCAL_REJECT && 7257 (rsn_code == IOERR_SLI_ABORTED || 7258 rsn_code == IOERR_LINK_DOWN || 7259 rsn_code == IOERR_SLI_DOWN)) { 7260 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS, 7261 "0408 Report link error true: <x%x:x%x>\n", 7262 ulp_status, ulp_word4); 7263 return true; 7264 } 7265 7266 return false; 7267 } 7268